US20080203009A1 - Pump - Google Patents
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- Publication number
- US20080203009A1 US20080203009A1 US11/975,254 US97525407A US2008203009A1 US 20080203009 A1 US20080203009 A1 US 20080203009A1 US 97525407 A US97525407 A US 97525407A US 2008203009 A1 US2008203009 A1 US 2008203009A1
- Authority
- US
- United States
- Prior art keywords
- casing
- outlet
- basket
- strainer
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000012530 fluid Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 3
- 238000005086 pumping Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 11
- 230000009182 swimming Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000238634 Libellulidae Species 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/26—Filters with built-in pumps filters provided with a pump mounted in or on the casing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/40—Special measures for connecting different parts of the filter
- B01D2201/4084—Snap or Seeger ring connecting means
Definitions
- the present invention relates to pumps and, more particularly, to centrifugal pumps for use in connection with fluid circulation systems for swimming pools, spas, and other recreational bodies of water.
- Numerous pumps have been developed in the past for use in connection with fluid circulation systems for swimming pools, spas, whirlpools and the like. Since a pump is the heart of a fluid circulation system, it should function optimally at all times in order for one to gain the maximal amount of use and enjoyment of the associated swimming pool, spa, etc. Consequently, any required replacement, repair or maintenance of the pump and its associated components must be conducted quickly and efficiently in order to reduce any downtime of the system as well as to reduce any associated labor costs. Because various components of many conventional pumps are assembled by threads, bolts or the like, assembly and disassembly of such pumps are often time-consuming, inefficient and costly.
- a pump should adapt easily to the specific configuration of the existing fluid circulation system.
- a return line of the fluid circulation system (which is typically connected to the pump, directly or indirectly) could be positioned either horizontally, vertically, or in any position therebetween; and, therefore, the outlet of the pump must be aligned with the return line accordingly.
- many conventional pumps are not easily adaptable to a wide variety of configurations of fluid systems, and doing so typically involves substantial or total disassembly of the pumps. As a result, much time and labor are required to make the pumps adaptable.
- a contractor who has been retained to install the pump must carry on hand two sets of pumps, one having a vertically positioned outlet and one having a horizontally positioned outlet, in order to ensure he or she has the correct pump that will adapt to the specific configuration of the fluid circulation system.
- a pump that is designed for quick and easy assembly and disassembly and for selective configuration of its components to suit different operational requirements and configurations of the fluid circulation system.
- the present invention overcomes the disadvantages and shortcomings of the prior art discussed above by providing a new and improved pump, which includes a strainer housing, a pump housing assembly, and motor that are removably attached to each other such that the pump housing assembly is positioned between the strainer housing and the motor.
- the pump housing assembly includes a motor lock ring, which is fixed to the motor, and a casing that is attached rotatably to the motor lock ring.
- the lock ring includes a push-button having a latch, while the casing includes at least two separate, spaced apart locking tabs that are each sized and shaped to engage the latch of the lock ring.
- the casing can be rotated so that one of its locking tabs engages the latch of the motor lock ring, which enables a user to configure the outlet to a vertical position, a horizontal position, or any position therebetween.
- a simple push of the button of the motor lock ring disengages the latch from the locking tab and enables a user to, once again, rotate the casing and change the position of the outlet.
- only the strainer housing need be unfastened from the casing in order to rotate the casing. Hence, a minimal amount of disassembly time is required in order to configure the pump to adapt to the particular configuration of the fluid circulation system (i.e., the particular position of the return line).
- the pump also includes a strainer basket, which is configured to provide an auxiliary fluid flow path around an outer surface of the basket in the event that the basket becomes clogged with leaves and other large debris.
- the basket includes a set of internal fins extending inwardly from an inner surface of the basket proximate to the outlet of the strainer chamber. The internal fins prevent leaves and other large debris from blocking perforations in the basket proximate to the outlet of the chamber, thereby keeping the fluid flow path into the outlet of the chamber clear.
- the basket also includes a plurality of external fins that extend outwardly from the outer surface of the basket.
- the external fins engage an inner surface of a strainer chamber of the strainer housing, thereby creating a space between the inner surface of the chamber and the outer surface of the basket which provides an alternate fluid flow path in the event the basket becomes clogged. Also, in the event that the basket becomes clogged, the external fins prevent the basket from expanding substantially and hence prevent a decrease in the size of the fluid path within the chamber.
- the basket and the strainer chamber are each sized and shaped so that the basket does not substantially rotate within the chamber when installed therein, which keeps the basket aligned properly within the chamber.
- the present invention has been adapted for use in connection with fluid circulation systems for swimming pools, spas, whirlpools, hot tubs, baths, and other recreational bodies of water.
- the present invention can be adapted for use in connection with other fluid circulation systems in various commercial, industrial and residential settings. Further features and advantages of the invention will appear more clearly on a reading of the detailed description of an exemplary embodiment of the invention, which is given below by way of example only with reference to the accompanying drawings.
- FIG. 1 is a front perspective view of a pump constructed in accordance with one exemplary embodiment of the present invention
- FIG. 2A is an exploded front perspective view of the pump shown in FIG. 1 ;
- FIG. 2B is an exploded rear perspective view of the pump shown in FIG. 1 ;
- FIG. 3A is a rear perspective view of a strainer basket employed by the pump shown in FIG. 1 ;
- FIG. 3B is a front perspective view of the strainer basket shown in FIG. 3A ;
- FIG. 3C is a top perspective view of the strainer basket shown in FIG. 3A ;
- FIG. 3D is a side elevational view of the strainer basket shown in FIG. 3A ;
- FIGS. 4A , B and C are sequential cross-sectional views, taken along section lines A-A and looking in the direction of the arrows, showing a portion of a casing being fastened to a portion of a motor lock ring shown in FIGS. 5A and 5B ;
- FIG. 5A is a rear perspective view of a casing and a front perspective view of a corresponding motor lock ring employed by the pump of FIG. 2B , showing an outlet of the casing in a horizontal position;
- FIG. 5B is a rear perspective view of the motor lock ring attached to the casing of FIG. 5A ;
- FIG. 5C is a rear perspective view of a casing and a front perspective view of a corresponding motor lock ring employed by the pump of FIG. 2B , showing an outlet of the casing in a vertical position;
- FIG. 5D is a rear perspective view of the motor lock ring attached to the casing of FIG. 5C ;
- FIG. 6A is a cross-sectional view, taken along section line B-B and looking in the direction of the arrows, of the casing and the motor lock ring of FIG. 5B ;
- FIG. 6B is a cross-sectional view, taken along section line C-C and looking in the direction of the arrows, of the casing and the motor lock ring of FIG. 5D ;
- FIG. 7A is a rear perspective view of a strainer basket and a front perspective view of a corresponding casing cover employed by the pump shown in FIG. 2B ;
- FIG. 7B is a top perspective view of a portion of a strainer basket and a bottom perspective view of an associated cover employed by the pump of FIG. 2B .
- a pump 10 includes a strainer housing 12 , a pump housing assembly 14 connected to the strainer housing 12 , and a cylindrical-shaped electrical motor 16 connected to the pump housing assembly 14 such that the pump housing assembly 14 is positioned between the strainer housing 12 and the motor 16 .
- the features and functions of the strainer housing 12 , the pump housing assembly 14 , and the motor 16 shall be described in greater detail hereinafter.
- the strainer housing 12 includes a front end 18 , a rear end 20 opposite the front end 18 , a top end 22 , and a bottom end 24 opposite the top end 22 .
- a circular-shaped inlet 26 is formed at the front end 18 of the strainer housing 12 proximate to the top end 22 thereof, while a circular-shaped outlet 28 is formed at the rear end 20 of the strainer housing 12 proximate to the bottom end 24 thereof (not shown in FIG. 2A , but see FIG. 2B ).
- the inlet 26 includes an annular flanged projection 30 having a set of internal threads 32 and a set of external threads 34 , whose function shall be described hereinafter.
- the outlet 28 includes an annular collar 36 having an array of rectangular-shaped locking members 38 (not shown in FIG. 2A , but see FIG. 2B ), whose function shall be described hereinafter.
- the strainer housing 12 further includes a substantially cylindrical-shaped skirt 40 that protrudes from the rear end 20 of the strainer housing 12 and at least partially encircles the outlet 28 (see FIG. 2B ).
- the skirt 40 defines an open area 42 which allows for the removable connection of various pump components, which will be discussed hereinafter.
- the skirt 40 includes a peripheral edge 44 having an array of notches 46 , whose function shall be described hereinafter.
- the strainer housing 12 further includes a substantially cylindrical-shaped strainer chamber 48 that communicates with the inlet 26 and the outlet 28 .
- the strainer chamber 48 includes a circular-shaped opening 50 located at the top end 22 of the strainer housing 12 and a gibbous-shaped bottom 52 located at the bottom end 24 of the strainer housing 12 (see FIG. 7B ).
- the opening 50 is defined by a cylindrical-shaped projection 54 , which extends upwardly from the strainer housing 12 and which includes a plurality of locking members 56 formed thereon in an annular fashion.
- the inner surface 58 of the front end 18 of the strainer chamber 48 tapers from the opening 50 to the bottom 52 thereof, the purpose of which shall be described hereinafter.
- the inner surface 58 of the strainer chamber 48 includes a pair of elongated projections 60 extending longitudinally and radially inward therefrom, each one having an end 61 positioned proximate to the opening 50 (not shown in FIGS. 2A and 2B , but see FIG. 7B ).
- the projections 60 are positioned parallel to each other and on opposite sides of the inlet 26 (see FIG. 7B ).
- the inner surface 58 of the strainer chamber 48 further includes a circular-shaped projection 62 that encircles the outlet 28 (not shown in FIGS. 2A and 2B , but see FIG. 7B ).
- the functions of the elongated projections 60 and the circular-shaped projection 62 shall be described hereinafter.
- a cover 64 closes off the strainer opening 50 in a fluid-tight manner.
- the cover 64 includes a cover lock ring 66 and a lid 68 connected to the cover lock ring 66 .
- the lid 68 is preferably made from a transparent material, but it can be made from an opaque material.
- the cover lock ring 66 is removably mounted to the strainer housing 12 for securing the cover 64 to the cylindrical projection 54 .
- the cover lock ring 66 includes an annular array of locking members 70 that are sized and shaped so as to releasably interlock with the locking members 56 of the cylindrical projection 54 in a bayonet fashion (not shown in FIG.
- the cover lock ring 66 also includes a pair of diametrically opposed handles 72 to facilitate the installation and removal of the cover 64 on and from the cylindrical projection 54 .
- An O-ring 74 is mounted between the cover 64 and the cylindrical projection 54 to provide a fluid-tight seal therebetween (not shown in FIGS. 1 and 7B , but see FIGS. 2A and 2B ).
- a drain hole 76 having a set of internal threads 78 is formed at the front end 18 of the strainer housing 12 proximate to the bottom end 24 thereof and in communication with the strainer chamber 48 .
- a plug 80 having a set of external threads 82 that threadedly engage the internal threads 78 of the drain hole 76 , is sized and shaped to plug the drain hole 76 in a fluid-tight manner.
- the pump 10 further includes a substantially cylindrical-shaped strainer basket 84 that is removably installed within the strainer chamber 48 of the strainer housing 12 .
- the basket 84 includes a front side 86 , a rear side 88 opposite the front side 86 , a top end 90 and a bottom end 92 opposite the top end 90 .
- the basket 84 includes a circular-shaped opening 94 formed at the top end 90 thereof and having a flange 96 , and a gibbous-shaped base 98 located at the bottom end 92 of the basket 84 .
- the front side 86 of the basket 84 tapers from the top end 90 to the bottom end 82 (see, in particular, FIGS. 3A and 3D ), the purpose of which shall be described hereinafter.
- the basket 84 further includes a series of circumferential ribs 100 (i.e., lateral) that are spaced apart in parallel fashion from the top end 90 to the bottom end 92 of the basket 84 , and which form an outer surface 102 of the basket 84 , and a series of spaced apart longitudinal ribs 104 that extend from the top end 90 to the bottom end 92 of the basket 84 , and which form an inner surface 106 of the basket 84
- the circumferential ribs 100 and the longitudinal ribs 104 intersect perpendicularly with each other to form a plurality of rectangular-shaped perforations 108 .
- the perforations 108 located proximate to the front side 86 of the basket 84 gradually decrease in size from the top end 90 to the bottom end 92 thereof (see, in particular, FIG. 3A ).
- the base 98 of the basket 84 includes a series of spaced-apart parallel ribs 110 that extend from the front side 86 to the rear side 88 of the basket 84 , and which form an outer surface 112 of the base 98 , and a series of parallel spaced apart ribs 114 that extend perpendicularly to the series of ribs 110 and form an inner surface 116 of the base 98 .
- the ribs 110 intersect with the ribs 114 so as to form a plurality of perforations 118 .
- an U-shaped inlet 120 is formed at the front side 86 of the basket 84 proximate to the top end 90 thereof.
- an U-shaped fin 122 extends outwardly from the outer surface 102 surrounding the inlet 120
- an elongated fin 124 extends outwardly from the outer surface 102 from a bottom point 126 of the U-shaped fin 122 to a point 128 located proximate to the bottom end 92 of the basket 84 (see, in particular, FIGS. 3A and 3D ).
- the rear side 90 of the basket 84 contains a rectangular-shaped depression 130 that extends from the bottom end 92 of the basket 84 to a top point 132 intermediate the top and bottom ends 90 , 92 of the basket 84 .
- an arc-shaped overhang 134 is formed on the rear side 88 of the basket 84 .
- the inner surface 106 of the basket 84 includes a plurality of parallel spaced-apart fins 136 that extend from the top 132 of the depression 130 to the base 98 of the basket 84 .
- an elongated fin 138 projects outwardly extending longitudinally from the top end 90 to the overhang 134
- an elongated fin 140 projects outwardly from the outer surface 102 extending longitudinally from the overhang 134 to the bottom end 92 of the basket 84 and continuing to extend from the outer surface 112 on the base 98 of the basket 84 from the rear side 88 to the front side 86 .
- the pump housing assembly 14 includes a volute casing 142 , a closed impeller 144 housed within the casing 142 , a casing cover 146 mounted to the casing 142 , and a motor lock ring 148 connected to the casing 142 and to the motor 16 such that motor lock ring 148 is positioned between the casing 142 and the motor 16 .
- the features and functions of the casing 142 , the impeller 144 , the casing cover 146 , and the motor lock ring 148 shall be described in greater detail hereinafter.
- the casing 142 which has a unitary construction, includes a front end 150 , a rear end 152 opposite the front end 150 , a volute-shaped plate 154 having a first surface 156 and a second surface 158 opposite the first surface 156 and positioned intermediate the front and rear ends 150 , 152 , and a cylindrical-shaped wall 160 that encircles the plate 154 and extends from the front end 150 to the rear end 152 .
- the wall 160 includes an outer surface 162 that extends between the front and rear ends 150 , 152 , a first inner surface 164 that extends from the first surface 156 of the plate 154 to the front end 150 , and a second inner surface 166 that extends partially from the second surface 158 of the plate 154 to the rear end 152 .
- the first surface 156 of the plate 154 , the first inner surface 164 of the wall 160 , and the casing cover 146 form a fluid chamber 168 , the function of which shall be described hereinafter.
- a circular-shaped outlet 170 is formed at the outer surface 162 of the wall 160 .
- the outlet 170 includes an annular flanged projection 172 that extends tangentially from the outer surface 162 of the wall 160 and is in communication with the fluid chamber 168 .
- the outlet 170 includes a set of internal threads 174 and a set of external threads 176 , whose function shall be described hereinafter.
- an arc-shaped channel 178 is formed within the first surface 156 of the plate 154 and extends outwardly from the second surface 158 of the plate 154 .
- the channel 178 is in communication with the outlet 170 , the purpose of which shall be described hereinafter.
- a centrally located circular-shaped aperture 180 extends from the first surface 156 to the second surface 158 of the plate 154 .
- a bushing assembly 182 of a type known in the art is mounted within the aperture 180 .
- a centrally located annular collar 184 extends axially from the second surface 158 of the plate 154 and encircles the aperture 180 .
- the collar 184 contains an annular array of locking members 186 that extends axially therefrom.
- Each of the locking members 186 contains a locking tab 188 , whose function shall be described hereinafter.
- the casing 142 includes the four locking members 186 (i.e., two diametrically opposed pairs as shown in the Figures), but it may include a greater or lesser number than four.
- an arc-shaped groove 190 is formed between the plate 154 and the second inner surface 166 of the wall 160 (not shown in FIGS. 5A and 5C , but see FIGS. 6A and 6B ).
- An elongated first tab member 192 and an elongated first stop member 194 extend transversely on and inwardly from the second inner surface 166 of the wall 160 within the groove 190 and are positioned proximate to the outlet 170 .
- the first stop member 194 is positioned closer to the outlet 170 than, and extends further inwardly than, the first tab member 192 .
- An elongated second tab member 196 and an elongated second stop member 198 extend transversely on and inwardly from the second inner surface 166 of the wall 160 within the groove 190 and are positioned distal to the outlet 170 .
- the second stop member 198 is positioned farther from the outlet 170 than, and extends further inwardly than, the second tab member 196 .
- the first tab member 192 and the first stop member 194 are positioned approximately 90 degrees from the second tab member 196 and the second stop member 198 , but they may positioned at any distance from each other.
- the casing 142 includes the first tab and first stop members 192 , 194 and second tab and second stop members 196 , 198 (i.e., two pairs of tab and stop members), but it may include a lesser or greater number.
- the functions of the first tab and first stop members 192 , 194 and the second tab and second stop members 196 , 198 shall be described hereinafter.
- a plurality of spaced apart cylindrical-shaped members 200 extend transversely on the outer surface 162 of the wall 160 .
- Each of the members 200 has a threaded hole 202 extending axially therein.
- a plurality of spaced apart notches 204 are formed at a peripheral edge 206 of the wall 160 at the front end 150 .
- One of the plurality of notches 204 is positioned adjacent to a corresponding one of the plurality of members 200 .
- the casing 142 includes the seven members 200 and the seven notches 204 , but it may include a greater or lesser number than seven for each. The functions of the members 200 and the notches 204 shall be described hereinafter.
- the casing 142 is characterized by a volute-type design.
- the casing 142 may be characterized by other types of designs that are known in the art, such as, for example, a circular casing design (not shown in the Figures).
- the impeller 144 includes a circular-shaped eye 208 for receiving fluid and a plurality of channels 210 therein for discharging high-velocity fluid.
- the impeller 144 includes a centrally located threaded hub 212 , whose function shall be described hereinafter.
- the impeller 144 is housed within the casing 142 in a manner to be described hereinafter.
- the pump 10 includes the impeller 144 , which has a closed design (see FIGS. 2A and 2B ).
- the impeller 144 may be characterized by other designs for impellers that are known in the art, such as, for example, an open design or a semi-open design (not shown in the Figures).
- the cover 146 which has a unitary construction, includes a first surface 214 and second surface 216 opposite the first surface 216 , and a peripheral edge 218 .
- a centrally located inlet 220 extends from the first surface 214 to the second surface 216 of the cover 146 .
- the inlet 220 includes an annular flanged projection 222 having a first annular groove 224 positioned proximate to the first surface 214 of the cover 146 , an annular array of locking members 226 positioned adjacent to the groove 224 , a flange 227 , and a second annular groove 228 positioned distal from the first surface 216 of the cover 146 such that the locking members 226 are positioned intermediate the first and second annular grooves 224 , 228 .
- the functions of the first and second annular grooves 224 , 228 and the locking members 226 shall be described hereinafter.
- a centrally located outlet 230 is formed at the second surface 216 of the cover 146 and is in communication with the inlet 220 .
- a volute-shaped member 232 which extends outwardly from the second surface 216 of the cover 146 and encircles the outlet 230 , includes an arc-shaped incline 234 that is sized and shaped to correspond with the channel 178 of the casing 142 , thus forming a fluid path into the outlet 170 of the casing 142 .
- the member 232 contains an annular groove 236 that is sized and shaped to receive an O-ring 238 , which provides a fluid-tight seal between the casing cover 146 and the casing 142 .
- an annular array of tabs 240 extends radially along the peripheral edge 218 of the cover 146 .
- Each of the tabs 240 includes a hole 242 , whose function shall be described hereinafter.
- the cover 146 includes the seven tabs 240 , but it may include a greater or lesser number than seven.
- the motor lock ring 148 which has a unitary construction, includes a circular-shaped plate 244 having a first surface 246 , a second surface 248 opposite the first surface 246 , a peripheral edge 250 , and a substantially circular-shaped wall 252 extending from the first surface 246 of the plate 244 at the peripheral edge 250 .
- the wall 252 begins on the peripheral edge 250 of the plate 244 at a first end 254 and terminates on the peripheral edge 250 at a second end 256 , resulting in an arc-shaped opening 258 formed between the first and second ends 254 , 256 .
- the wall 252 further includes an inner surface 260 , an outer surface 262 opposite the inner surface 260 , an annular first section 264 extending directly from the first surface 246 of the plate 244 , and an annular second section 266 extending from the first section 264 that tapers inwardly.
- the first section of 264 of the wall 252 includes an overhang 268 that extends radially from the peripheral edge 250 of the plate 244 from the first end 254 to the second end 256 of the wall 252 .
- a plurality of arc-shaped grooves 270 are formed between the peripheral edge 250 of the plate 244 and the inner surface 260 of the wall 252 , whose function shall be described hereinafter.
- the first section 264 of the wall 252 includes a rectangular-shaped notch 272 and a rectangular-shaped button 274 having a latch 276 that extends transversely along the first section 264 of the wall 252 , beyond the peripheral edge 250 of the plate 244 , and within the notch 272 .
- the latch 276 which has a trapezoidal prism shape, includes a notch 278 .
- the notch 272 and the button 274 whose functions shall be described hereinafter, are preferably positioned on the wall 252 at approximately 90 degrees from the center of the opening 258 , but they may be positioned in other locations on the wall 252 .
- the motor lock ring 148 further includes an annular array of cylindrical-shaped posts 280 which extend from the second surface 248 of the plate 244 and are positioned adjacent to the inner surface 260 of the wall 252 .
- Each of the posts 280 includes a threaded hole 282 , whose function shall be described hereinafter.
- the motor lock ring 148 includes the four posts 280 (i.e., the two pairs of diametrically opposed posts 280 ), but may include a greater or lesser number than four.
- the motor lock ring 126 further includes a centrally located, circular-shaped aperture 284 that extends from the first surface 246 to the second surface 248 of the plate 244 .
- a first collar 286 extends outwardly from the first surface 246 of the plate 244 and encircles the aperture 284
- a second collar 288 extends outwardly from the second surface 248 of the plate 244 and encircles the aperture 284 .
- the functions of the first and second collars 286 , 288 shall be described hereinafter.
- the motor 16 includes a housing 290 having a first end 292 and a second end 294 opposite thereof.
- a circular-shaped first cover plate 296 is mounted to the first end 292 of the housing 290
- a circular-shaped second cover plate 298 is mounted to the second end 294 of the housing 290 .
- the first cover plate 296 includes an annular array of holes 300
- the second cover plate 298 includes an annular array of holes 302 .
- Each of the holes 300 of the first cover plate 296 corresponds and is aligned with one of the holes 302 of the second cover plate 298 .
- Each of the pair of corresponding holes 300 , 302 is sized and shaped to receive a corresponding motor through bolt 304 having a threaded end 306 , whose function shall be described hereinafter.
- the motor 16 further includes a shaft 308 that is centrally and axially positioned and rotatably mounted within the housing 290 .
- the shaft 308 includes a threaded end 310 that protrudes from the first end 292 of the housing 290 .
- the motor 16 includes a canopy 312 removably fastened to the second cover plate 298 .
- the canopy 312 includes a power switch 314 that is connected electrically to the motor 16 . Alternatively, the canopy 312 need not be included.
- a cradle 316 is fastened to a lower end 318 of the housing 290 of the motor 16 to provide stability and mounting therefor.
- the motor 16 may be obtained from A.O. Smith Electrical Products Company of Tipp City, Ohio, Model No. 7-193389-20. Alternatively, the motor 16 can be supplied by other manufacturers and/or be characterized by other model numbers.
- the inlet 26 and outlet 28 of the strainer housing 12 and the outlet 170 of the casing 142 are circular in shape, but each can consist of other shapes and sizes.
- the opening 50 of the strainer housing 12 is preferably circular in shape, while the bottom 52 of the strainer housing 12 is preferably gibbous in shape, but each can consist of other shapes and sizes.
- the opening 94 of the basket 84 is preferably circular in shaped, while the base 98 of the basket 84 is preferably gibbous in shape, but each one can consist of other shapes and sizes.
- the overall shape of the chamber 48 of the strainer housing 12 can be cylindrical, conical, etc., while the basket 84 may have a corresponding size and shape.
- the pump 10 is assembled in the following manner.
- the motor lock ring 148 is mounted to the first end 292 of the housing 290 of the motor 16 , whereby the shaft 308 of the motor 16 is inserted into the aperture 284 of the motor lock ring 148 and the second section 266 of the wall 252 is coupled frictionally to the first end 292 of the housing 290 of the motor 16 .
- the second section 266 of the wall 252 of the motor lock ring 148 tapers inwardly, very little space exists between the wall 252 and the first end 292 of the housing 290 , thereby shielding the first end 292 of the housing 290 from foreign objects.
- Each of the threaded holes 282 of the posts 280 of the motor lock ring 148 is aligned with a corresponding one of the holes 300 of the first motor cover plate 296 , which, in turn, is aligned with a corresponding one of the holes 302 of the second motor plate 298 .
- One of the bolts 304 is inserted within one of the holes 302 of the second motor cover plate 298 , the corresponding hole 300 of the first motor cover plate 296 , and the corresponding threaded hole 282 of the post 280 of the motor lock ring 148 .
- the threaded end 306 of the bolt 304 threadedly engages the threaded hole 282 of the post 280 , thereby enabling the motor lock ring 148 to be removably fastened to the motor 16 .
- the opening of the wall 258 is positioned proximate to the lower end 318 of the housing 290 of the motor 16 .
- the opening 258 allows a user to firmly grasp the motor lock ring 148 to facilitate removal thereof from the motor 16 .
- the button 274 of the motor lock ring 148 is, preferably, positioned approximately ninety degrees from the center of the opening 258 , the reason for which shall be described hereinafter.
- the casing 142 is mounted to the motor lock ring 148 .
- the locking members 186 of the casing 142 are inserted into the aperture 284 of the motor lock ring 148 and are flexed inwardly while passing through the second collar 288 of the motor lock ring 148 .
- the locking tabs 188 of the locking members 186 then engage the second collar 288 .
- the first collar 286 of the motor lock ring 148 acts as a spacer between the first surface 246 of the plate 244 of the motor lock ring 148 and the second surface 158 of the plate 154 of the casing 142 .
- the casing 142 is rotatably fastened to the motor lock ring 148 .
- the outlet 170 of the casing 142 should be positioned either vertically or horizontally, which will depend on the actual position of the return line of the fluid circulation system to be connected thereto (not shown in the Figures). If it is desired to position the outlet 170 vertically, i.e., the return line is positioned vertically, then the casing 142 is rotated in a direction so that the notch 278 of the latch 276 engages the second tab member 196 of the casing 142 (which is positioned distal to the outlet 170 ). In this regard, the notch 278 of the latch 276 and the second tab member 196 are each sized and shaped so that they releasably engage each other.
- the second stop member 198 prevents the latch 276 from bypassing the second tab member 196 when the casing 142 is rotated and aligns the notch 278 of the latch 276 with the second tab member 196 so as to ensure the engagement between the latch 276 and the second tab member 196 .
- the casing 142 is positioned fixedly and hence the outlet 170 is positioned vertically.
- the casing 142 is rotated in a direction so that the notch 278 of the latch 276 engages the first tab member 192 of the casing 142 (which is positioned proximate to the outlet 170 ).
- the notch 278 of the latch 276 and the first tab member 192 are each sized and shaped so that they releasably engage each other.
- the first stop member 194 prevents the latch 276 from bypassing the first tab member 192 when the casing 142 is rotated and aligns the notch 278 of the latch 276 with the first tab member 192 so as to ensure their engagement with each other.
- the casing 142 is positioned fixedly and hence the outlet 170 is positioned horizontally.
- a user simply presses the button 274 of the motor lock ring 148 to release the latch 276 from the second tab member 196 of the casing 142 , thereby enabling the casing 142 to be rotated until the latch 276 engages the first tab member 192 of the casing 142 .
- the channel 270 provides a space directly below the latch 276 which provides clearance to allow the button 274 to be depressed.
- a user simply presses the button 274 of the motor lock ring 148 to release the latch 276 from the first tab member 192 of the casing 142 , thereby enabling the casing 142 to be rotated until the latch 276 engages the second tab member 196 of the casing 142 .
- the casing 142 includes the tab members 192 , 196 , which enable the outlet 170 of the casing 142 to be positioned vertically or horizontally.
- the casing 142 can include additional tab members positioned intermediate the tab members 192 , 196 , which would enable the outlet 170 to be positioned intermediate a vertical position or a horizontal position, e.g., diagonally at any angle (not shown in the Figures).
- the impeller 144 is fastened to the shaft 308 of the motor 16 , whereby the hub 212 of the impeller 144 threadedly engages the threaded end 310 of the shaft 308 , thereby enabling the impeller 144 to be removably fastened to the shaft 308 .
- a shaft seal 320 known in the art is mounted between the impeller 144 and the shaft 308 to prevent the passage of fluid into the housing 290 of the motor 16 .
- the cover 146 is mounted to the casing 142 , whereby each of the tabs of 240 the cover 146 engage a corresponding one of the notches 204 of the casing 142 and hence each of the holes 242 of the tabs 240 aligns with one of the threaded holes 202 of the cylindrical members 200 of the casing 142 .
- the corresponding holes 202 , 242 are adapted to receive a screw 322 , thereby enabling the cover 146 to be removably fastened to the casing 142 .
- the cover 146 When the cover 146 is mounted to the casing 142 , the incline 234 of the cover 146 is aligned and corresponds with the groove 190 of the casing 142 so as to form a fluid flow path into the outlet 170 .
- the O-ring 238 provides a fluid-tight seal between the casing 142 and the cover 146 .
- the strainer housing 12 is then mounted to pump housing assembly 14 .
- the annular flanged projection 222 of the casing cover 146 is inserted into the annular collar 36 of the strainer housing 12 .
- the locking members 38 of the annular collar 36 and the locking members 226 of the annular flanged projection 222 of the casing cover 146 are sized and shaped to releasably engage each other.
- the tabs 240 of the casing cover 146 and the notches 46 of the skirt 40 of the strainer housing 12 are sized and shaped to engage each other, thereby preventing the strainer housing 12 from rotating relative to the pump housing assembly 14 .
- the second annular groove 228 of the casing cover 146 is positioned within the chamber 48 of the strainer housing 12 proximate to the circular-shaped projection 62 .
- An O-ring 321 mounted in the first annular groove 224 provides a fluid-tight seal between the strainer housing 48 and the casing cover 146 .
- a horseshoe-shaped clip 324 releasably fastens the strainer housing 12 to the pump housing assembly 14 .
- the clip 324 slides around the second annular groove 228 of the projection 222 of the casing cover 146 and is secured between the flange 227 of the casing cover 146 and the circular-shaped projection 62 of the strainer housing 12 .
- the clip 324 includes a handle 326 which facilitates the installation and removal of the locking member to and from the projection 222 of the casing cover 146 .
- the basket 84 is installed within the chamber 48 of the strainer housing 12 through the opening 50 .
- the flange 96 of the basket 84 rests on top of the ends 61 of the projections 60 of the chamber 48
- the overhang 134 of the basket 84 rests on top of the handle 326 of the clip 324
- the fins 122 , 124 , 138 , 140 of the basket 84 are positioned proximate to the inner surface 58 of the chamber 48 .
- the inlet 120 of the basket 84 aligns with the inlet 26 of the strainer housing 12
- the depression 130 of the basket 84 aligns with the outlet 28 of the strainer housing 12
- the basket 84 and the chamber 48 are each sized and shaped, as described above, such that the basket 84 may only be positioned and fully installed within the chamber 48 in a single manner, and such that the basket 84 does not substantially rotate within the chamber 48 , thereby ensuring proper alignment between the inlet 120 of the basket 84 and the inlet 26 of the strainer housing 12 and between the depression 130 of the basket 84 and the outlet 28 of the strainer housing 12 .
- the cover 64 closes off the strainer opening 50 in a fluid-tight manner, as described above.
- the cover 64 may be easily installed on and removed from the strainer housing 12 by turning the cover 64 on the projection 54 of the strainer housing 12 less than one-quarter of a turn, thereby providing fast and easy access to the strainer basket 84 .
- the features and configuration of the cover 64 and the strainer housing 12 as described above, have several advantages over conventional covers that include threads and or screws for mounting onto associated conventional strainer baskets.
- the lid 68 is preferably made from a transparent material which enables a user to examine the inside of the strainer housing 12 without having to remove the cover 64 (e.g., to view the fluid level inside the chamber 48 ; to view the amount of leaves and other debris in the basket 84 ; etc.).
- the pump 10 When the pump 10 is fully assembled, it is connected to a fluid circulation system of a swimming pool, spa or the like (not shown in the Figures). More particularly, the inlet 26 of the pump 10 is typically connected fluidly to a suction line (e.g., piping) of the system, with the suction line being connected fluidly to one or more skimmers and/or one or more main drains of the swimming pool (not shown in the Figures).
- a suction line e.g., piping
- the suction line, or a coupling connected thereto which is known in the art, may include a set of internal threads that threadedly engage the external threads 34 of the annular flanged projection 30 of the inlet 26 of the pump 10 or a set of external threads that threadedly engage the internal threads 32 of the annular flanged projection 30 of the inlet 26 (not shown in the Figures).
- the annular flanged projection 30 need not include the internal threads 32 and/or the external threads 34 and hence could be connected to the suction line in another manner known in the art (not shown in the Figures).
- the outlet 170 of the pump 10 is typically connected fluidly to a return line (e.g., piping) of the swimming pool that typically leads to other components of the system, such as valves, a filter, a chlorine generator and/or a heater.
- the return line, or a coupling connected thereto which is known in the art, may include a set of internal threads that threadedly engage the external threads 176 of the annular flanged projection 172 of the outlet 170 of the pump 10 , or a set of external threads that threadedly engage the internal threads 174 of the annular flanged projection 172 of the outlet 170 (not shown in the Figures).
- the annular flanged projection 170 need not include the internal threads 174 and/or the external threads 176 and hence could be connected to the return line in another manner known in the art.
- the pump 10 can accommodate a return line that is positioned either horizontally, vertically or any position therebetween, i.e., positioning the outlet 170 of the casing 142 by rotating it in the aforedescribed manner.
- the shaft 308 of the motor 16 rotates and hence the impeller 144 rotates within the fluid chamber 168 of the casing 142 , which causes a suction force that propels the fluid through the pump 10 and throughout the fluid circulation system of the swimming pool.
- the fluid flows through the inlet 26 of the strainer housing 12 and through the inlet 120 of the strainer basket 84 .
- the strainer basket 84 catches and collects leaves and other large debris that might clog the pump 10 , while the fluid is permitted to pass through the perforations 108 , 118 of the basket 84 .
- the fluid flows through the outlet 28 of the strainer housing 12 , into the inlet 220 and through the outlet 230 of the casing cover 146 , and into the eye 208 of the impeller 144 .
- the fluid is then directed out of the impeller 144 through the channels 210 thereof and into the fluid chamber 168 of the casing 142 and hence through the outlet 170 and into the return line of the system.
- any fluid remaining in the strainer housing 12 can be drained by removing the plug 80 from the drain hole 76 .
- the configuration and the features of the basket 84 prevent the outlet 28 of the strainer housing 12 from becoming blocked.
- the fins 136 of the basket 84 prevent leaves and other large debris from blocking the perforations 108 located within the depression 130 of the basket 84 , thereby enabling fluid to flow therethrough.
- the fins 122 , 124 , 138 of the basket 84 engage the inner surface 58 of the chamber 48
- the fin 140 of the basket 84 engages the inlet 220 of the casing cover 146 of the pump housing assembly 14 . This configuration creates an alternate fluid flow path around the outer surface 102 of the basket 84 within the chamber 48 .
- the fins 122 , 124 , 138 , 140 prevent the basket 84 from expanding outwardly.
- the basket 84 remains rigid and hence fluid is permitted to flow around the outer surface 102 of the basket 84 unimpeded.
- the depression 130 of the basket 84 forms a space between the basket 84 and the outlet 28 of the strainer housing 12 , thereby providing an unimpeded fluid flow path into the outlet 28 of the strainer housing 12 .
- the pump 10 and its associated components may be easily and quickly disassembled and reassembled for maintenance, repair or replacement.
- the pump 10 allows a user to easily and quickly change the position of he outlet 170 of the casing 142 from a vertical position to a horizontal position, and vice-versa, without the need to substantially disassemble and reassemble the components of the pump 10 .
- This can be achieved by performing the following steps. First, all plumbing attached to the pump 10 (e.g., the return line and suction line of the system), the cover 64 is disengaged and removed from the strainer housing 12 as described above, and the basket 84 is removed from the chamber 48 .
- the clip 324 is easily disengaged from annular flanged projection 222 of the casing cover 146 by simply pulling it upwardly. This allows the strainer housing 12 to be easily disengaged from the pump housing assembly 14 .
- a user simply presses the button 274 of the motor lock ring 148 to release the latch 276 from the second tab member 196 of the casing 142 , thereby enabling the casing 142 to be rotated until the latch 276 engages the first tab member 192 of the casing 142 .
- the pump 10 is easily and quickly reassembled by reversing the aforesaid steps, i.e., the strainer housing 12 is attached to the casing cover 146 , the clip 324 is inserted around the second annular groove 228 of the annular flanged projection 222 of the casing cover 146 , the basket 84 is installed within the chamber 48 of strainer housing 12 , and the cover 64 is installed on the strainer housing 12 . Consequently, this reduces both time and labor costs.
Abstract
Description
- The present application is a continuation of U.S. patent application Ser. No. 11/541,924, filed Sep. 29, 2006, which claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Application No. 60/732,008 filed Nov. 1, 2005, the contents of both of which are hereby incorporated by reference in their entirety for all purposes.
- The present invention relates to pumps and, more particularly, to centrifugal pumps for use in connection with fluid circulation systems for swimming pools, spas, and other recreational bodies of water.
- Numerous pumps have been developed in the past for use in connection with fluid circulation systems for swimming pools, spas, whirlpools and the like. Since a pump is the heart of a fluid circulation system, it should function optimally at all times in order for one to gain the maximal amount of use and enjoyment of the associated swimming pool, spa, etc. Consequently, any required replacement, repair or maintenance of the pump and its associated components must be conducted quickly and efficiently in order to reduce any downtime of the system as well as to reduce any associated labor costs. Because various components of many conventional pumps are assembled by threads, bolts or the like, assembly and disassembly of such pumps are often time-consuming, inefficient and costly.
- Also, a pump should adapt easily to the specific configuration of the existing fluid circulation system. For example, a return line of the fluid circulation system (which is typically connected to the pump, directly or indirectly) could be positioned either horizontally, vertically, or in any position therebetween; and, therefore, the outlet of the pump must be aligned with the return line accordingly. However, many conventional pumps are not easily adaptable to a wide variety of configurations of fluid systems, and doing so typically involves substantial or total disassembly of the pumps. As a result, much time and labor are required to make the pumps adaptable. Sometimes, a contractor who has been retained to install the pump must carry on hand two sets of pumps, one having a vertically positioned outlet and one having a horizontally positioned outlet, in order to ensure he or she has the correct pump that will adapt to the specific configuration of the fluid circulation system. In view of the foregoing circumstances, there is a need for a pump that is designed for quick and easy assembly and disassembly and for selective configuration of its components to suit different operational requirements and configurations of the fluid circulation system.
- In addition, many conventional pumps have strainer baskets that do not provide for an alternate and free fluid flow path when their associated strainer baskets become clogged with leaves and other large debris. As a result, the fluid flow through the pump becomes impeded, thereby resulting in the inefficient operation, or a complete failure of, the pump. Accordingly, there is a need for a pump that provides an alternate and free fluid flow path in the event that its associated strainer basket becomes clogged.
- The present invention overcomes the disadvantages and shortcomings of the prior art discussed above by providing a new and improved pump, which includes a strainer housing, a pump housing assembly, and motor that are removably attached to each other such that the pump housing assembly is positioned between the strainer housing and the motor. The pump housing assembly includes a motor lock ring, which is fixed to the motor, and a casing that is attached rotatably to the motor lock ring. The lock ring includes a push-button having a latch, while the casing includes at least two separate, spaced apart locking tabs that are each sized and shaped to engage the latch of the lock ring. The casing can be rotated so that one of its locking tabs engages the latch of the motor lock ring, which enables a user to configure the outlet to a vertical position, a horizontal position, or any position therebetween. A simple push of the button of the motor lock ring disengages the latch from the locking tab and enables a user to, once again, rotate the casing and change the position of the outlet. In addition, only the strainer housing need be unfastened from the casing in order to rotate the casing. Hence, a minimal amount of disassembly time is required in order to configure the pump to adapt to the particular configuration of the fluid circulation system (i.e., the particular position of the return line).
- The pump also includes a strainer basket, which is configured to provide an auxiliary fluid flow path around an outer surface of the basket in the event that the basket becomes clogged with leaves and other large debris. The basket includes a set of internal fins extending inwardly from an inner surface of the basket proximate to the outlet of the strainer chamber. The internal fins prevent leaves and other large debris from blocking perforations in the basket proximate to the outlet of the chamber, thereby keeping the fluid flow path into the outlet of the chamber clear. The basket also includes a plurality of external fins that extend outwardly from the outer surface of the basket. The external fins engage an inner surface of a strainer chamber of the strainer housing, thereby creating a space between the inner surface of the chamber and the outer surface of the basket which provides an alternate fluid flow path in the event the basket becomes clogged. Also, in the event that the basket becomes clogged, the external fins prevent the basket from expanding substantially and hence prevent a decrease in the size of the fluid path within the chamber. In addition, the basket and the strainer chamber are each sized and shaped so that the basket does not substantially rotate within the chamber when installed therein, which keeps the basket aligned properly within the chamber.
- Specifically, the present invention has been adapted for use in connection with fluid circulation systems for swimming pools, spas, whirlpools, hot tubs, baths, and other recreational bodies of water. However, the present invention can be adapted for use in connection with other fluid circulation systems in various commercial, industrial and residential settings. Further features and advantages of the invention will appear more clearly on a reading of the detailed description of an exemplary embodiment of the invention, which is given below by way of example only with reference to the accompanying drawings.
- For a more complete understanding of the present invention, reference is made to the following detailed description of an exemplary embodiment considered in conjunction with the accompanying drawings, in which:
-
FIG. 1 is a front perspective view of a pump constructed in accordance with one exemplary embodiment of the present invention; -
FIG. 2A is an exploded front perspective view of the pump shown inFIG. 1 ; -
FIG. 2B is an exploded rear perspective view of the pump shown inFIG. 1 ; -
FIG. 3A is a rear perspective view of a strainer basket employed by the pump shown inFIG. 1 ; -
FIG. 3B is a front perspective view of the strainer basket shown inFIG. 3A ; -
FIG. 3C is a top perspective view of the strainer basket shown inFIG. 3A ; -
FIG. 3D is a side elevational view of the strainer basket shown inFIG. 3A ; -
FIGS. 4A , B and C are sequential cross-sectional views, taken along section lines A-A and looking in the direction of the arrows, showing a portion of a casing being fastened to a portion of a motor lock ring shown inFIGS. 5A and 5B ; -
FIG. 5A is a rear perspective view of a casing and a front perspective view of a corresponding motor lock ring employed by the pump ofFIG. 2B , showing an outlet of the casing in a horizontal position; -
FIG. 5B is a rear perspective view of the motor lock ring attached to the casing ofFIG. 5A ; -
FIG. 5C is a rear perspective view of a casing and a front perspective view of a corresponding motor lock ring employed by the pump ofFIG. 2B , showing an outlet of the casing in a vertical position; -
FIG. 5D is a rear perspective view of the motor lock ring attached to the casing ofFIG. 5C ; -
FIG. 6A is a cross-sectional view, taken along section line B-B and looking in the direction of the arrows, of the casing and the motor lock ring ofFIG. 5B ; -
FIG. 6B is a cross-sectional view, taken along section line C-C and looking in the direction of the arrows, of the casing and the motor lock ring ofFIG. 5D ; -
FIG. 7A is a rear perspective view of a strainer basket and a front perspective view of a corresponding casing cover employed by the pump shown inFIG. 2B ; and -
FIG. 7B is a top perspective view of a portion of a strainer basket and a bottom perspective view of an associated cover employed by the pump ofFIG. 2B . - Referring to
FIGS. 1 , 2A and 2B, apump 10 includes astrainer housing 12, apump housing assembly 14 connected to thestrainer housing 12, and a cylindrical-shapedelectrical motor 16 connected to thepump housing assembly 14 such that thepump housing assembly 14 is positioned between thestrainer housing 12 and themotor 16. The features and functions of thestrainer housing 12, thepump housing assembly 14, and themotor 16 shall be described in greater detail hereinafter. - Referring to
FIGS. 1 , 2A and 2B, thestrainer housing 12 includes afront end 18, arear end 20 opposite thefront end 18, atop end 22, and abottom end 24 opposite thetop end 22. A circular-shapedinlet 26 is formed at thefront end 18 of thestrainer housing 12 proximate to thetop end 22 thereof, while a circular-shapedoutlet 28 is formed at therear end 20 of thestrainer housing 12 proximate to thebottom end 24 thereof (not shown inFIG. 2A , but seeFIG. 2B ). Theinlet 26 includes an annularflanged projection 30 having a set ofinternal threads 32 and a set ofexternal threads 34, whose function shall be described hereinafter. Theoutlet 28 includes anannular collar 36 having an array of rectangular-shaped locking members 38 (not shown inFIG. 2A , but seeFIG. 2B ), whose function shall be described hereinafter. - Referring to
FIGS. 2A , 2B, and 7A, thestrainer housing 12 further includes a substantially cylindrical-shapedskirt 40 that protrudes from therear end 20 of thestrainer housing 12 and at least partially encircles the outlet 28 (seeFIG. 2B ). Theskirt 40 defines anopen area 42 which allows for the removable connection of various pump components, which will be discussed hereinafter. Theskirt 40 includes aperipheral edge 44 having an array ofnotches 46, whose function shall be described hereinafter. - Referring to
FIGS. 2A , 2B and 7B, thestrainer housing 12 further includes a substantially cylindrical-shapedstrainer chamber 48 that communicates with theinlet 26 and theoutlet 28. Thestrainer chamber 48 includes a circular-shapedopening 50 located at thetop end 22 of thestrainer housing 12 and a gibbous-shaped bottom 52 located at thebottom end 24 of the strainer housing 12 (seeFIG. 7B ). Theopening 50 is defined by a cylindrical-shapedprojection 54, which extends upwardly from thestrainer housing 12 and which includes a plurality of lockingmembers 56 formed thereon in an annular fashion. As a result of this configuration, aninner surface 58 of thefront end 18 of thestrainer chamber 48 tapers from theopening 50 to the bottom 52 thereof, the purpose of which shall be described hereinafter. Theinner surface 58 of thestrainer chamber 48 includes a pair ofelongated projections 60 extending longitudinally and radially inward therefrom, each one having anend 61 positioned proximate to the opening 50 (not shown inFIGS. 2A and 2B , but seeFIG. 7B ). Theprojections 60 are positioned parallel to each other and on opposite sides of the inlet 26 (seeFIG. 7B ). Theinner surface 58 of thestrainer chamber 48 further includes a circular-shapedprojection 62 that encircles the outlet 28 (not shown inFIGS. 2A and 2B , but seeFIG. 7B ). The functions of theelongated projections 60 and the circular-shapedprojection 62 shall be described hereinafter. - Referring to
FIGS. 1 , 2A, 2B and 7B, acover 64 closes off thestrainer opening 50 in a fluid-tight manner. Thecover 64 includes acover lock ring 66 and alid 68 connected to thecover lock ring 66. Thelid 68 is preferably made from a transparent material, but it can be made from an opaque material. Thecover lock ring 66 is removably mounted to thestrainer housing 12 for securing thecover 64 to thecylindrical projection 54. In this regard, thecover lock ring 66 includes an annular array of lockingmembers 70 that are sized and shaped so as to releasably interlock with the lockingmembers 56 of thecylindrical projection 54 in a bayonet fashion (not shown inFIG. 1 , but seeFIGS. 2A , 2B and 7B). Thecover lock ring 66 also includes a pair of diametrically opposed handles 72 to facilitate the installation and removal of thecover 64 on and from thecylindrical projection 54. An O-ring 74 is mounted between thecover 64 and thecylindrical projection 54 to provide a fluid-tight seal therebetween (not shown inFIGS. 1 and 7B , but seeFIGS. 2A and 2B ). - Referring to
FIG. 2A , adrain hole 76 having a set ofinternal threads 78 is formed at thefront end 18 of thestrainer housing 12 proximate to thebottom end 24 thereof and in communication with thestrainer chamber 48. Aplug 80, having a set ofexternal threads 82 that threadedly engage theinternal threads 78 of thedrain hole 76, is sized and shaped to plug thedrain hole 76 in a fluid-tight manner. - Referring to
FIGS. 2A , 2B and 3A through 3D, thepump 10 further includes a substantially cylindrical-shapedstrainer basket 84 that is removably installed within thestrainer chamber 48 of thestrainer housing 12. Thebasket 84 includes afront side 86, arear side 88 opposite thefront side 86, atop end 90 and abottom end 92 opposite thetop end 90. Thebasket 84 includes a circular-shapedopening 94 formed at thetop end 90 thereof and having aflange 96, and a gibbous-shapedbase 98 located at thebottom end 92 of thebasket 84. As a result of this configuration, thefront side 86 of thebasket 84 tapers from thetop end 90 to the bottom end 82 (see, in particular,FIGS. 3A and 3D ), the purpose of which shall be described hereinafter. - Referring to
FIGS. 3A through 3D , thebasket 84 further includes a series of circumferential ribs 100 (i.e., lateral) that are spaced apart in parallel fashion from thetop end 90 to thebottom end 92 of thebasket 84, and which form anouter surface 102 of thebasket 84, and a series of spaced apartlongitudinal ribs 104 that extend from thetop end 90 to thebottom end 92 of thebasket 84, and which form aninner surface 106 of thebasket 84 Thecircumferential ribs 100 and thelongitudinal ribs 104 intersect perpendicularly with each other to form a plurality of rectangular-shapedperforations 108. Because thefront side 86 of thebasket 84 tapers from thetop end 90 to thebottom end 92, theperforations 108 located proximate to thefront side 86 of thebasket 84 gradually decrease in size from thetop end 90 to thebottom end 92 thereof (see, in particular,FIG. 3A ). - Referring to
FIG. 3C , thebase 98 of thebasket 84 includes a series of spaced-apartparallel ribs 110 that extend from thefront side 86 to therear side 88 of thebasket 84, and which form anouter surface 112 of thebase 98, and a series of parallel spaced apartribs 114 that extend perpendicularly to the series ofribs 110 and form aninner surface 116 of thebase 98. Theribs 110 intersect with theribs 114 so as to form a plurality ofperforations 118. - Referring back to
FIGS. 3A through 3D , anU-shaped inlet 120 is formed at thefront side 86 of thebasket 84 proximate to thetop end 90 thereof. On thefront side 86 of thebasket 84, anU-shaped fin 122 extends outwardly from theouter surface 102 surrounding theinlet 120, while anelongated fin 124 extends outwardly from theouter surface 102 from abottom point 126 of theU-shaped fin 122 to apoint 128 located proximate to thebottom end 92 of the basket 84 (see, in particular,FIGS. 3A and 3D ). - Referring to
FIGS. 3B through 3D , therear side 90 of thebasket 84 contains a rectangular-shapeddepression 130 that extends from thebottom end 92 of thebasket 84 to atop point 132 intermediate the top and bottom ends 90, 92 of thebasket 84. As a result, an arc-shapedoverhang 134 is formed on therear side 88 of thebasket 84. Theinner surface 106 of thebasket 84 includes a plurality of parallel spaced-apartfins 136 that extend from the top 132 of thedepression 130 to thebase 98 of thebasket 84. On therear side 88 of thebasket 84, anelongated fin 138 projects outwardly extending longitudinally from thetop end 90 to theoverhang 134, while anelongated fin 140 projects outwardly from theouter surface 102 extending longitudinally from theoverhang 134 to thebottom end 92 of thebasket 84 and continuing to extend from theouter surface 112 on thebase 98 of thebasket 84 from therear side 88 to thefront side 86. - Referring back to
FIGS. 2A and 2B , thepump housing assembly 14 includes avolute casing 142, aclosed impeller 144 housed within thecasing 142, acasing cover 146 mounted to thecasing 142, and amotor lock ring 148 connected to thecasing 142 and to themotor 16 such thatmotor lock ring 148 is positioned between thecasing 142 and themotor 16. The features and functions of thecasing 142, theimpeller 144, thecasing cover 146, and themotor lock ring 148 shall be described in greater detail hereinafter. - Referring to
FIGS. 2A , 2B, 4A, 4B, 4C, 5A and 5C, thecasing 142, which has a unitary construction, includes afront end 150, arear end 152 opposite thefront end 150, a volute-shapedplate 154 having afirst surface 156 and asecond surface 158 opposite thefirst surface 156 and positioned intermediate the front andrear ends wall 160 that encircles theplate 154 and extends from thefront end 150 to therear end 152. Thewall 160 includes anouter surface 162 that extends between the front andrear ends inner surface 164 that extends from thefirst surface 156 of theplate 154 to thefront end 150, and a secondinner surface 166 that extends partially from thesecond surface 158 of theplate 154 to therear end 152. Thefirst surface 156 of theplate 154, the firstinner surface 164 of thewall 160, and thecasing cover 146 form afluid chamber 168, the function of which shall be described hereinafter. - Still referring to
FIGS. 2A , 2B, 5A and 5C, a circular-shapedoutlet 170 is formed at theouter surface 162 of thewall 160. Theoutlet 170 includes an annularflanged projection 172 that extends tangentially from theouter surface 162 of thewall 160 and is in communication with thefluid chamber 168. Theoutlet 170 includes a set ofinternal threads 174 and a set ofexternal threads 176, whose function shall be described hereinafter. - Referring to
FIGS. 2B , 5A and 5C, an arc-shapedchannel 178 is formed within thefirst surface 156 of theplate 154 and extends outwardly from thesecond surface 158 of theplate 154. Thechannel 178 is in communication with theoutlet 170, the purpose of which shall be described hereinafter. A centrally located circular-shapedaperture 180 extends from thefirst surface 156 to thesecond surface 158 of theplate 154. Abushing assembly 182 of a type known in the art is mounted within theaperture 180. A centrally locatedannular collar 184 extends axially from thesecond surface 158 of theplate 154 and encircles theaperture 180. Thecollar 184 contains an annular array of lockingmembers 186 that extends axially therefrom. Each of the lockingmembers 186 contains alocking tab 188, whose function shall be described hereinafter. Preferably, thecasing 142 includes the four locking members 186 (i.e., two diametrically opposed pairs as shown in the Figures), but it may include a greater or lesser number than four. - Referring to
FIGS. 5A , 5C, 6A and 6B, an arc-shapedgroove 190 is formed between theplate 154 and the secondinner surface 166 of the wall 160 (not shown inFIGS. 5A and 5C , but seeFIGS. 6A and 6B ). An elongatedfirst tab member 192 and an elongatedfirst stop member 194 extend transversely on and inwardly from the secondinner surface 166 of thewall 160 within thegroove 190 and are positioned proximate to theoutlet 170. Thefirst stop member 194 is positioned closer to theoutlet 170 than, and extends further inwardly than, thefirst tab member 192. An elongatedsecond tab member 196 and an elongatedsecond stop member 198 extend transversely on and inwardly from the secondinner surface 166 of thewall 160 within thegroove 190 and are positioned distal to theoutlet 170. Thesecond stop member 198 is positioned farther from theoutlet 170 than, and extends further inwardly than, thesecond tab member 196. Preferably, thefirst tab member 192 and thefirst stop member 194 are positioned approximately 90 degrees from thesecond tab member 196 and thesecond stop member 198, but they may positioned at any distance from each other. Preferably, thecasing 142 includes the first tab andfirst stop members second stop members 196, 198 (i.e., two pairs of tab and stop members), but it may include a lesser or greater number. The functions of the first tab andfirst stop members second stop members - Referring to
FIG. 2A , a plurality of spaced apart cylindrical-shapedmembers 200 extend transversely on theouter surface 162 of thewall 160. Each of themembers 200 has a threadedhole 202 extending axially therein. A plurality of spaced apartnotches 204 are formed at aperipheral edge 206 of thewall 160 at thefront end 150. One of the plurality ofnotches 204 is positioned adjacent to a corresponding one of the plurality ofmembers 200. Preferably, thecasing 142 includes the sevenmembers 200 and the sevennotches 204, but it may include a greater or lesser number than seven for each. The functions of themembers 200 and thenotches 204 shall be described hereinafter. - Preferably, the
casing 142 is characterized by a volute-type design. However, thecasing 142 may be characterized by other types of designs that are known in the art, such as, for example, a circular casing design (not shown in the Figures). - Referring to
FIGS. 2A and 2B , theimpeller 144 includes a circular-shapedeye 208 for receiving fluid and a plurality ofchannels 210 therein for discharging high-velocity fluid. Theimpeller 144 includes a centrally located threadedhub 212, whose function shall be described hereinafter. Theimpeller 144 is housed within thecasing 142 in a manner to be described hereinafter. Preferably, thepump 10 includes theimpeller 144, which has a closed design (seeFIGS. 2A and 2B ). However, theimpeller 144 may be characterized by other designs for impellers that are known in the art, such as, for example, an open design or a semi-open design (not shown in the Figures). - Referring to
FIGS. 2A , 2B and 7A, thecover 146, which has a unitary construction, includes afirst surface 214 andsecond surface 216 opposite thefirst surface 216, and aperipheral edge 218. A centrally locatedinlet 220 extends from thefirst surface 214 to thesecond surface 216 of thecover 146. Theinlet 220 includes an annularflanged projection 222 having a firstannular groove 224 positioned proximate to thefirst surface 214 of thecover 146, an annular array of lockingmembers 226 positioned adjacent to thegroove 224, aflange 227, and a secondannular groove 228 positioned distal from thefirst surface 216 of thecover 146 such that the lockingmembers 226 are positioned intermediate the first and secondannular grooves annular grooves members 226 shall be described hereinafter. - Still referring to
FIGS. 2A , 2B and 7A, a centrally locatedoutlet 230 is formed at thesecond surface 216 of thecover 146 and is in communication with theinlet 220. A volute-shapedmember 232, which extends outwardly from thesecond surface 216 of thecover 146 and encircles theoutlet 230, includes an arc-shapedincline 234 that is sized and shaped to correspond with thechannel 178 of thecasing 142, thus forming a fluid path into theoutlet 170 of thecasing 142. Themember 232 contains an annular groove 236 that is sized and shaped to receive an O-ring 238, which provides a fluid-tight seal between thecasing cover 146 and thecasing 142. - Still referring to
FIGS. 2A , 2B and 7A, an annular array oftabs 240 extends radially along theperipheral edge 218 of thecover 146. Each of thetabs 240 includes ahole 242, whose function shall be described hereinafter. Preferably, thecover 146 includes the seventabs 240, but it may include a greater or lesser number than seven. - Referring to
FIGS. 2A , 2B and 5A through 5D, themotor lock ring 148, which has a unitary construction, includes a circular-shapedplate 244 having afirst surface 246, asecond surface 248 opposite thefirst surface 246, aperipheral edge 250, and a substantially circular-shapedwall 252 extending from thefirst surface 246 of theplate 244 at theperipheral edge 250. Thewall 252 begins on theperipheral edge 250 of theplate 244 at afirst end 254 and terminates on theperipheral edge 250 at asecond end 256, resulting in an arc-shapedopening 258 formed between the first and second ends 254, 256. Thewall 252 further includes aninner surface 260, anouter surface 262 opposite theinner surface 260, an annularfirst section 264 extending directly from thefirst surface 246 of theplate 244, and an annularsecond section 266 extending from thefirst section 264 that tapers inwardly. The first section of 264 of thewall 252 includes anoverhang 268 that extends radially from theperipheral edge 250 of theplate 244 from thefirst end 254 to thesecond end 256 of thewall 252. A plurality of arc-shapedgrooves 270 are formed between theperipheral edge 250 of theplate 244 and theinner surface 260 of thewall 252, whose function shall be described hereinafter. - Referring to
FIGS. 2A , 5A and 5D, thefirst section 264 of thewall 252 includes a rectangular-shapednotch 272 and a rectangular-shapedbutton 274 having alatch 276 that extends transversely along thefirst section 264 of thewall 252, beyond theperipheral edge 250 of theplate 244, and within thenotch 272. Thelatch 276, which has a trapezoidal prism shape, includes anotch 278. Thenotch 272 and thebutton 274, whose functions shall be described hereinafter, are preferably positioned on thewall 252 at approximately 90 degrees from the center of theopening 258, but they may be positioned in other locations on thewall 252. - Referring to
FIGS. 2A , 2B, and 5A through 5D, themotor lock ring 148 further includes an annular array of cylindrical-shapedposts 280 which extend from thesecond surface 248 of theplate 244 and are positioned adjacent to theinner surface 260 of thewall 252. Each of theposts 280 includes a threadedhole 282, whose function shall be described hereinafter. Preferably, themotor lock ring 148 includes the four posts 280 (i.e., the two pairs of diametrically opposed posts 280), but may include a greater or lesser number than four. - Still referring to
FIGS. 2A , 2B and 5A through 5D, themotor lock ring 126 further includes a centrally located, circular-shapedaperture 284 that extends from thefirst surface 246 to thesecond surface 248 of theplate 244. Afirst collar 286 extends outwardly from thefirst surface 246 of theplate 244 and encircles theaperture 284, while asecond collar 288 extends outwardly from thesecond surface 248 of theplate 244 and encircles theaperture 284. The functions of the first andsecond collars - Referring to
FIGS. 2A and 2B , themotor 16 includes ahousing 290 having afirst end 292 and asecond end 294 opposite thereof. A circular-shapedfirst cover plate 296 is mounted to thefirst end 292 of thehousing 290, while a circular-shapedsecond cover plate 298 is mounted to thesecond end 294 of thehousing 290. Thefirst cover plate 296 includes an annular array ofholes 300, while thesecond cover plate 298 includes an annular array ofholes 302. Each of theholes 300 of thefirst cover plate 296 corresponds and is aligned with one of theholes 302 of thesecond cover plate 298. Each of the pair of correspondingholes bolt 304 having a threadedend 306, whose function shall be described hereinafter. - Still referring to
FIGS. 2A and 2B , themotor 16 further includes ashaft 308 that is centrally and axially positioned and rotatably mounted within thehousing 290. Theshaft 308 includes a threadedend 310 that protrudes from thefirst end 292 of thehousing 290. Themotor 16 includes acanopy 312 removably fastened to thesecond cover plate 298. Thecanopy 312 includes a power switch 314 that is connected electrically to themotor 16. Alternatively, thecanopy 312 need not be included. Acradle 316 is fastened to alower end 318 of thehousing 290 of themotor 16 to provide stability and mounting therefor. Themotor 16 may be obtained from A.O. Smith Electrical Products Company of Tipp City, Ohio, Model No. 7-193389-20. Alternatively, themotor 16 can be supplied by other manufacturers and/or be characterized by other model numbers. - Preferably, the
inlet 26 andoutlet 28 of thestrainer housing 12 and theoutlet 170 of thecasing 142 are circular in shape, but each can consist of other shapes and sizes. Also, theopening 50 of thestrainer housing 12 is preferably circular in shape, while the bottom 52 of thestrainer housing 12 is preferably gibbous in shape, but each can consist of other shapes and sizes. Similarly, theopening 94 of thebasket 84 is preferably circular in shaped, while thebase 98 of thebasket 84 is preferably gibbous in shape, but each one can consist of other shapes and sizes. For instance, the overall shape of thechamber 48 of thestrainer housing 12 can be cylindrical, conical, etc., while thebasket 84 may have a corresponding size and shape. - Referring to
FIGS. 2A and 2B , thepump 10 is assembled in the following manner. First, themotor lock ring 148 is mounted to thefirst end 292 of thehousing 290 of themotor 16, whereby theshaft 308 of themotor 16 is inserted into theaperture 284 of themotor lock ring 148 and thesecond section 266 of thewall 252 is coupled frictionally to thefirst end 292 of thehousing 290 of themotor 16. Because thesecond section 266 of thewall 252 of themotor lock ring 148 tapers inwardly, very little space exists between thewall 252 and thefirst end 292 of thehousing 290, thereby shielding thefirst end 292 of thehousing 290 from foreign objects. Each of the threadedholes 282 of theposts 280 of themotor lock ring 148 is aligned with a corresponding one of theholes 300 of the firstmotor cover plate 296, which, in turn, is aligned with a corresponding one of theholes 302 of thesecond motor plate 298. One of thebolts 304 is inserted within one of theholes 302 of the secondmotor cover plate 298, the correspondinghole 300 of the firstmotor cover plate 296, and the corresponding threadedhole 282 of thepost 280 of themotor lock ring 148. In each instance, the threadedend 306 of thebolt 304 threadedly engages the threadedhole 282 of thepost 280, thereby enabling themotor lock ring 148 to be removably fastened to themotor 16. It is noted that when themotor lock ring 148 is fully mounted on themotor 16, the opening of thewall 258 is positioned proximate to thelower end 318 of thehousing 290 of themotor 16. Theopening 258 allows a user to firmly grasp themotor lock ring 148 to facilitate removal thereof from themotor 16. Also, thebutton 274 of themotor lock ring 148 is, preferably, positioned approximately ninety degrees from the center of theopening 258, the reason for which shall be described hereinafter. - Referring to
FIGS. 4A through 4C and 5A through 5D, thecasing 142 is mounted to themotor lock ring 148. The lockingmembers 186 of thecasing 142 are inserted into theaperture 284 of themotor lock ring 148 and are flexed inwardly while passing through thesecond collar 288 of themotor lock ring 148. The lockingtabs 188 of the lockingmembers 186 then engage thesecond collar 288. Thefirst collar 286 of themotor lock ring 148 acts as a spacer between thefirst surface 246 of theplate 244 of themotor lock ring 148 and thesecond surface 158 of theplate 154 of thecasing 142. As a result, thecasing 142 is rotatably fastened to themotor lock ring 148. - Next, a determination must be made as to whether the
outlet 170 of thecasing 142 should be positioned either vertically or horizontally, which will depend on the actual position of the return line of the fluid circulation system to be connected thereto (not shown in the Figures). If it is desired to position theoutlet 170 vertically, i.e., the return line is positioned vertically, then thecasing 142 is rotated in a direction so that thenotch 278 of thelatch 276 engages thesecond tab member 196 of the casing 142 (which is positioned distal to the outlet 170). In this regard, thenotch 278 of thelatch 276 and thesecond tab member 196 are each sized and shaped so that they releasably engage each other. Thesecond stop member 198 prevents thelatch 276 from bypassing thesecond tab member 196 when thecasing 142 is rotated and aligns thenotch 278 of thelatch 276 with thesecond tab member 196 so as to ensure the engagement between thelatch 276 and thesecond tab member 196. When thelatch 276 and thesecond tab member 196 are engaged with each other, thecasing 142 is positioned fixedly and hence theoutlet 170 is positioned vertically. On the other hand, if it is desired to position theoutlet 170 horizontally, i.e., the return line is positioned horizontally, then thecasing 142 is rotated in a direction so that thenotch 278 of thelatch 276 engages thefirst tab member 192 of the casing 142 (which is positioned proximate to the outlet 170). In this regard, thenotch 278 of thelatch 276 and thefirst tab member 192 are each sized and shaped so that they releasably engage each other. Thefirst stop member 194 prevents thelatch 276 from bypassing thefirst tab member 192 when thecasing 142 is rotated and aligns thenotch 278 of thelatch 276 with thefirst tab member 192 so as to ensure their engagement with each other. When thelatch 276 and thefirst tab member 192 are engaged, thecasing 142 is positioned fixedly and hence theoutlet 170 is positioned horizontally. - If it is desired to switch the position of the
outlet 170 from a vertical position to a horizontal position, then a user simply presses thebutton 274 of themotor lock ring 148 to release thelatch 276 from thesecond tab member 196 of thecasing 142, thereby enabling thecasing 142 to be rotated until thelatch 276 engages thefirst tab member 192 of thecasing 142. Thechannel 270 provides a space directly below thelatch 276 which provides clearance to allow thebutton 274 to be depressed. Similarly, if it is desired to switch the position of theoutlet 170 from a horizontal position to a vertical position, then a user simply presses thebutton 274 of themotor lock ring 148 to release thelatch 276 from thefirst tab member 192 of thecasing 142, thereby enabling thecasing 142 to be rotated until thelatch 276 engages thesecond tab member 196 of thecasing 142. - Preferably, the
casing 142 includes thetab members outlet 170 of thecasing 142 to be positioned vertically or horizontally. Alternatively, thecasing 142 can include additional tab members positioned intermediate thetab members outlet 170 to be positioned intermediate a vertical position or a horizontal position, e.g., diagonally at any angle (not shown in the Figures). - Referring to
FIGS. 2A and 2B , theimpeller 144 is fastened to theshaft 308 of themotor 16, whereby thehub 212 of theimpeller 144 threadedly engages the threadedend 310 of theshaft 308, thereby enabling theimpeller 144 to be removably fastened to theshaft 308. Ashaft seal 320 known in the art is mounted between theimpeller 144 and theshaft 308 to prevent the passage of fluid into thehousing 290 of themotor 16. - Referring to
FIGS. 2A and 2B , thecover 146 is mounted to thecasing 142, whereby each of the tabs of 240 thecover 146 engage a corresponding one of thenotches 204 of thecasing 142 and hence each of theholes 242 of thetabs 240 aligns with one of the threadedholes 202 of thecylindrical members 200 of thecasing 142. The correspondingholes screw 322, thereby enabling thecover 146 to be removably fastened to thecasing 142. When thecover 146 is mounted to thecasing 142, theincline 234 of thecover 146 is aligned and corresponds with thegroove 190 of thecasing 142 so as to form a fluid flow path into theoutlet 170. The O-ring 238 provides a fluid-tight seal between thecasing 142 and thecover 146. - Referring to
FIGS. 2A , 2B, 7A and 7B, thestrainer housing 12 is then mounted to pumphousing assembly 14. In this regard, the annularflanged projection 222 of thecasing cover 146 is inserted into theannular collar 36 of thestrainer housing 12. The lockingmembers 38 of theannular collar 36 and the lockingmembers 226 of the annularflanged projection 222 of thecasing cover 146 are sized and shaped to releasably engage each other. Thetabs 240 of thecasing cover 146 and thenotches 46 of theskirt 40 of thestrainer housing 12 are sized and shaped to engage each other, thereby preventing thestrainer housing 12 from rotating relative to thepump housing assembly 14. The secondannular groove 228 of thecasing cover 146 is positioned within thechamber 48 of thestrainer housing 12 proximate to the circular-shapedprojection 62. An O-ring 321 mounted in the firstannular groove 224 provides a fluid-tight seal between thestrainer housing 48 and thecasing cover 146. - Still referring to
FIGS. 2A , 2B, 7A and 7B, a horseshoe-shapedclip 324 releasably fastens thestrainer housing 12 to thepump housing assembly 14. In this regard, theclip 324 slides around the secondannular groove 228 of theprojection 222 of thecasing cover 146 and is secured between theflange 227 of thecasing cover 146 and the circular-shapedprojection 62 of thestrainer housing 12. Theclip 324 includes ahandle 326 which facilitates the installation and removal of the locking member to and from theprojection 222 of thecasing cover 146. - Referring to
FIGS. 2A and 2B , thebasket 84 is installed within thechamber 48 of thestrainer housing 12 through theopening 50. When thebasket 84 is fully installed within thechamber 48, theflange 96 of thebasket 84 rests on top of theends 61 of theprojections 60 of thechamber 48, theoverhang 134 of thebasket 84 rests on top of thehandle 326 of theclip 324, and thefins basket 84 are positioned proximate to theinner surface 58 of thechamber 48. In addition, theinlet 120 of thebasket 84 aligns with theinlet 26 of thestrainer housing 12, while thedepression 130 of thebasket 84 aligns with theoutlet 28 of thestrainer housing 12. It is noted that thebasket 84 and thechamber 48 are each sized and shaped, as described above, such that thebasket 84 may only be positioned and fully installed within thechamber 48 in a single manner, and such that thebasket 84 does not substantially rotate within thechamber 48, thereby ensuring proper alignment between theinlet 120 of thebasket 84 and theinlet 26 of thestrainer housing 12 and between thedepression 130 of thebasket 84 and theoutlet 28 of thestrainer housing 12. - Referring to
FIGS. 2A , 2B and 7B, thecover 64 closes off thestrainer opening 50 in a fluid-tight manner, as described above. Thecover 64 may be easily installed on and removed from thestrainer housing 12 by turning thecover 64 on theprojection 54 of thestrainer housing 12 less than one-quarter of a turn, thereby providing fast and easy access to thestrainer basket 84. Thus, the features and configuration of thecover 64 and thestrainer housing 12, as described above, have several advantages over conventional covers that include threads and or screws for mounting onto associated conventional strainer baskets. As indicated above, thelid 68 is preferably made from a transparent material which enables a user to examine the inside of thestrainer housing 12 without having to remove the cover 64 (e.g., to view the fluid level inside thechamber 48; to view the amount of leaves and other debris in thebasket 84; etc.). - When the
pump 10 is fully assembled, it is connected to a fluid circulation system of a swimming pool, spa or the like (not shown in the Figures). More particularly, theinlet 26 of thepump 10 is typically connected fluidly to a suction line (e.g., piping) of the system, with the suction line being connected fluidly to one or more skimmers and/or one or more main drains of the swimming pool (not shown in the Figures). The suction line, or a coupling connected thereto, which is known in the art, may include a set of internal threads that threadedly engage theexternal threads 34 of the annularflanged projection 30 of theinlet 26 of thepump 10 or a set of external threads that threadedly engage theinternal threads 32 of the annularflanged projection 30 of the inlet 26 (not shown in the Figures). Alternatively, the annularflanged projection 30 need not include theinternal threads 32 and/or theexternal threads 34 and hence could be connected to the suction line in another manner known in the art (not shown in the Figures). - The
outlet 170 of thepump 10 is typically connected fluidly to a return line (e.g., piping) of the swimming pool that typically leads to other components of the system, such as valves, a filter, a chlorine generator and/or a heater. The return line, or a coupling connected thereto, which is known in the art, may include a set of internal threads that threadedly engage theexternal threads 176 of the annularflanged projection 172 of theoutlet 170 of thepump 10, or a set of external threads that threadedly engage theinternal threads 174 of the annularflanged projection 172 of the outlet 170 (not shown in the Figures). Alternatively, the annularflanged projection 170 need not include theinternal threads 174 and/or theexternal threads 176 and hence could be connected to the return line in another manner known in the art. As previously indicated, thepump 10 can accommodate a return line that is positioned either horizontally, vertically or any position therebetween, i.e., positioning theoutlet 170 of thecasing 142 by rotating it in the aforedescribed manner. - When the
pump 10 is activated, theshaft 308 of themotor 16 rotates and hence theimpeller 144 rotates within thefluid chamber 168 of thecasing 142, which causes a suction force that propels the fluid through thepump 10 and throughout the fluid circulation system of the swimming pool. In this regard, the fluid flows through theinlet 26 of thestrainer housing 12 and through theinlet 120 of thestrainer basket 84. Thestrainer basket 84 catches and collects leaves and other large debris that might clog thepump 10, while the fluid is permitted to pass through theperforations basket 84. The fluid flows through theoutlet 28 of thestrainer housing 12, into theinlet 220 and through theoutlet 230 of thecasing cover 146, and into theeye 208 of theimpeller 144. The fluid is then directed out of theimpeller 144 through thechannels 210 thereof and into thefluid chamber 168 of thecasing 142 and hence through theoutlet 170 and into the return line of the system. When thepump 10 is not in operation, such as, for example, winterization, any fluid remaining in thestrainer housing 12 can be drained by removing theplug 80 from thedrain hole 76. - It is noted that the configuration and the features of the
basket 84 prevent theoutlet 28 of thestrainer housing 12 from becoming blocked. For example, thefins 136 of thebasket 84 prevent leaves and other large debris from blocking theperforations 108 located within thedepression 130 of thebasket 84, thereby enabling fluid to flow therethrough. In addition, thefins basket 84 engage theinner surface 58 of thechamber 48, while thefin 140 of thebasket 84 engages theinlet 220 of thecasing cover 146 of thepump housing assembly 14. This configuration creates an alternate fluid flow path around theouter surface 102 of thebasket 84 within thechamber 48. Consequently, in the event that thebasket 84 becomes clogged with a heavy volume of debris that prevents the fluid from flowing through theperforations fins basket 84 from expanding outwardly. As a result, thebasket 84 remains rigid and hence fluid is permitted to flow around theouter surface 102 of thebasket 84 unimpeded. Also, thedepression 130 of thebasket 84 forms a space between thebasket 84 and theoutlet 28 of thestrainer housing 12, thereby providing an unimpeded fluid flow path into theoutlet 28 of thestrainer housing 12. - It is also noted that the
pump 10 and its associated components may be easily and quickly disassembled and reassembled for maintenance, repair or replacement. Most notably, thepump 10 allows a user to easily and quickly change the position of heoutlet 170 of thecasing 142 from a vertical position to a horizontal position, and vice-versa, without the need to substantially disassemble and reassemble the components of thepump 10. This can be achieved by performing the following steps. First, all plumbing attached to the pump 10 (e.g., the return line and suction line of the system), thecover 64 is disengaged and removed from thestrainer housing 12 as described above, and thebasket 84 is removed from thechamber 48. Next, theclip 324 is easily disengaged from annularflanged projection 222 of thecasing cover 146 by simply pulling it upwardly. This allows thestrainer housing 12 to be easily disengaged from thepump housing assembly 14. To repeat for the sake of convenience, if it is desired to switch the position of theoutlet 170 from a vertical position to a horizontal position, a user simply presses thebutton 274 of themotor lock ring 148 to release thelatch 276 from thesecond tab member 196 of thecasing 142, thereby enabling thecasing 142 to be rotated until thelatch 276 engages thefirst tab member 192 of thecasing 142. Similarly, if it is desired to switch the position of theoutlet 170 from a horizontal position to a vertical position, then a user simply presses thebutton 274 of themotor lock ring 148 to release thelatch 276 from thefirst tab member 192 of thecasing 142, thereby enabling thecasing 142 to be rotated until thelatch 276 engages thesecond tab member 196 of thecasing 142. Unlike conventional pumps, the foregoing is achieved without the need to disassemble thepump housing assembly 14. That is, there is no need to remove thecasing cover 146 from thecasing 142, remove theimpeller 144 from theshaft 308 of themotor 16 and/or remove thecasing 142 from themotor lock ring 148 in order to rotate thecasing 142 and position theoutlet 170 as desired. - Once the
outlet 170 is positioned as desired, thepump 10 is easily and quickly reassembled by reversing the aforesaid steps, i.e., thestrainer housing 12 is attached to thecasing cover 146, theclip 324 is inserted around the secondannular groove 228 of the annularflanged projection 222 of thecasing cover 146, thebasket 84 is installed within thechamber 48 ofstrainer housing 12, and thecover 64 is installed on thestrainer housing 12. Consequently, this reduces both time and labor costs. - It should be understood that the embodiment described herein is merely exemplary and that a person skilled in the art may make many variations and modifications without departing from the spirit and scope of the invention. Accordingly, all such variations and modifications are intended to be included within the scope of the invention as defined in the appended claims.
Claims (1)
Priority Applications (1)
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US11/975,254 US20080203009A1 (en) | 2005-11-01 | 2007-10-18 | Pump |
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US11/541,924 Expired - Fee Related US7531092B2 (en) | 2005-11-01 | 2006-09-29 | Pump |
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US20110253609A1 (en) * | 2010-04-15 | 2011-10-20 | Wagner Robin J | Water cleaning system |
CN111412146A (en) * | 2020-06-05 | 2020-07-14 | 王�华 | Sewage treatment is carried with preventing blockking up water pump |
US20220402784A1 (en) * | 2021-06-18 | 2022-12-22 | Robin J. Wagner | Water management system |
US11964886B2 (en) * | 2021-06-18 | 2024-04-23 | Robin J. Wagner | Water management system |
US20230108937A1 (en) * | 2021-10-06 | 2023-04-06 | Luis Eduardo Perez | Pool debris collection container |
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US20070114168A1 (en) | 2007-05-24 |
US7531092B2 (en) | 2009-05-12 |
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