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Publication numberUS3627442 A
Publication typeGrant
Publication dateDec 14, 1971
Filing dateMay 14, 1970
Priority dateMay 14, 1970
Publication numberUS 3627442 A, US 3627442A, US-A-3627442, US3627442 A, US3627442A
InventorsBrandt Theodore C
Original AssigneeGen Electric
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Blower housing
US 3627442 A
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Description  (OCR text may contain errors)

United States Patent [72] Inventor Theodore C. Brandt Whltehouse, Tex.

[21] Appl. No. 37,226

[22] Filed May 14, 1970 [45] Patented Dec. 14, 1971 [73] Assignee General Electric Company [54] BLOWER HOUSING 14 Claims, 4 Drawing Figs.

[52] U.S.Cl 415/219, 417/423, 415/98, 415/206 [51 1 Int. Cl ..F04d 29/40, F04d 25/06, F04d 17/08 [50] Field of Search 415/98,

Primary Examiner-Henry F. Raduazo Attorneys-Harry B. O'Donnell, 111, Francis H. Boos, .lr.,

Frank L. Neuhauser, Oscar B. Waddell and Joseph B. Forman ABSTRACT: Improved means is provided for housing a blower, fan, or the like. Basically, the improved housing means comprises end wall means,,scroll means having a first dimension extensible along a first line transverse to the end wall means and a second dimension extensible along a second line generally parallel to the end wall means, and readily removable fastener means for quickly connecting and disconnecting the end wall and scroll means to and from one another. With this arrangement, a fluid inlet opening for the blower can be provided in the end wall means which is smaller than the portion of the blower contained within the housing means, but the blower portion can be easily extracted from within the housing means by removing the fastener means.

" 'PATENTED DEC 1 4 mm INVENTOR THEODORE C. BRANDT FIG H S ATTORNEY BLOWER uousmc BACKGROUND OF THE INVENTION This invention relates to the improvements in means for housing a blower, fan, or the like. More particularly, this invention is directed to the type of housings wherein air or some other fluid is drawn inwardly through a fluid opening provided in the housing end wall means and blown outwardly by the blower impeller through a fluid outlet opening from the housmg.

Heretofore, housings of the aforedescribed type have often comprised a pair of spaced end wall members forming the housing end wall means'and a scroll or wrapper sheet extending between and over the end wall members and forming the housing walls intermediate of the end wall members. Usually, these pats have been made from a flat, flexible material, such as sheet metal. Frequently, the end wall members have been shaped to conform to the desired end cross section of the housing and their outer peripheral edges have been bent laterally to provide a securing flange for the scroll or wrapper sheet which has been fitted thereover and permanently secured thereto by spot-welding. In order to permit insertion or removal of the blower impeller to and from within these pennanently secured prior art housings, it has been necessary to provide the end wall means with an opening large enough to permit a passage of the blower impeller. Since, however, such an opening is too large to function properly as the required blower fluid inlet opening, it has been customary with these prior art devices to place over it a reducing member that is provided with a fluid inlet opening of the proper size, with this reducing member being secured to the end wall means by bolts or other similar fastener devices. A typical form of such prior art housing means is described in US. Pat. No. 1,978,459.

SUMMARY OF THE INVENTION The present invention provides improved means for housing a blower, fan, and the like, which are greatly simplified in construction assembly and maintenance when compared with the aforedescribed prior art housing means. Basically, the improved housing means provided by the present invention comprises end wall means, scroll means having a first dimension extensible along a first line transverse to the end wall means and a second dimension extensible along a second line generally parallel to the end wall means, and readily removable fastener means for quickly connecting and disconnecting the end wall and scroll means to and from one another. With this improved arrangement, a fluid inlet opening for the blower can be provided in the end wall means which is smaller than the portion of the blower (such as the blower impeller) that is container within the housing means, but this blower portion can be easily extracted from within the housing means by removing the fastener means. Hence, the previous need for spot-welding is eliminated along with the previously required reducing member, and the costs of construction, assembly and maintenance are greatly reduced.

BRIEF DESCRIPTION OF THE DRAWING The present invention is illustrated in the accompanying drawing, wherein:

FIG. 1 is a somewhat schematic, partly broken, front elevational view of an electrically powered blower employing a presently preferred form of the improved housing means provided in accordance with the present invention;

FIG. 2 is a left end view of the apparatus illustrated in FIG.

FIG. 3 is an enlarged, exploded, right end perspective view showing the basic parts which comprise the housing means illustrated in FIGS. 1 and 2; and

FIG. 4 is a greatly enlarged fragmentary view showing certain details of construction and assembly of the readily removable fastener means that are employed to quickly connect and disconnect the parts of the housing means illustrated in FIGS. 1-3 and the means in which the fastener means are engaged.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawing and, more particularly, to FIGS. 1-3 thereof, there is illustrated, somewhat schematically, a blower unit 10 employing a presently preferred form of improved housing means 11 that is provided in accordance with the present invention. r

As best shown in FIGS. 1 and 3, the housing means 11 com prises a pair of spaced apart left and right end wall members 12 and 13 that form the end wall means of the housing 11 and a scroll or wrapper sheet 14 which extends between the end. wall members 12 and 13 to form the walls of the housing 11 intermediate the end wall members 12 and 13. The scroll or wrapper sheet means 14 has a first dimension, its width as shown in FIGS. 1 and 3, which is extensible along a first line transverse to the end wall means 12 and I3 and a second dimension, its thickness as shown in FIGS. 1 and 3, which is extensible along a second line that is generally parallel to the end wall means 12 and 13.

Typically, the two end wall members 12 and 13 and the sin gle scroll or wrapper sheet 14 are made from a flat flexible material, such as sheet metal. As illustrated in FIGS. 1-3, each of the end wall members 12 and 13 is shaped about its outer periphery to conform to the desired cross section of the housing means 11, with such shape, in the particular construction shown, including a generally circular portion 15, corresponding to the cross section of the housing portion within which the blower impeller 16 is to be contained, and a handlelike portion 17 extending away from the generally circular portion 15 and forming one edge of the blower housing fluid outlet opening 18.

Either or both (FIG. 3) of the end wall members 12 and I3 is provided with a circular opening 19 at or near to the center of its generally circular portion 15 which forms the blower housing fluid inlet opening. Each of these fluid inlet openings 19 is surrounded by flange means 20 formed of material bent laterally from the major plane of the end wall member 12 or 13 and has a diameter which is smaller than the diameter of the blower impeller 16, which, in turn, is supported within the housing 11 on the output rotor 21 of the blower electric drive motor 22 that is contained in frame means 23 which is small enough to pass through either of the fluid inlet openings 19 and is detachably mounted to either of the end wall members 12 or 13 (the left one 12 as shown in FIGS. 1 and 2) by three motor frame-engaging bracket members 24a, 24b, and 240 and three self-tapping sheetmetal screws 25a, 25b and 25c that are threaded into three apertures 26a, 26b, and 26c provided in the end wall members 12 and 13 around the fluid inlet opening 19.

As specifically shown in FIG. 3, each of the end wall members l2 and 13 is provided adjacent its outer periphery, save the portion thereof which. forms an edge of the blower fluid outlet 18, with flange means 27 integrally formed therewith by bending most of its outer margin into a generally L-shaped cross section. With this arrangement, the foot portion 27f of the L-shaped flange means 27 provides a seat for the left and right edges of the aforenoted first dimension of the scroll or wrapper sheet 14, while the upright portion 27a of the L- shaped flange means 27 is provided with a plurality of fastener means openings 28, which are spaced around the outer periphery of each of the two end wall members 12 and 13 and through each of which openings 28 is passed the threaded section 291 of a self-tapping sheetmetal screw 29 that is extensible along the aforenoted first line and which, in turn, is tightly threadably engaged with complementary thread-engaging means 30 that are formed by material that is displaced from the scroll or wrapper means 14 along the aforenoted second line.

As illustrated in FIGS. 1 and 3 and as shown in detail in FIG. 4, the complementary fastener-engaging means 30, with which the threaded section 29! of each of the readily removable fastener means or self-tapping sheetmetal screws 29 is engaged, are equal in number to the plurality of these screws 29 and the fastener means openings 28 provided, and are intended to be aligned therewith along the aforenoted first line. More specifically, the fastener-engaging means 30 are spaced lengthwise along the opposite long edges of the scroll or wrapper sheet 14 and each is formed by lancing the scroll or wrapper sheet 14 along the aforenoted first line to displace a series of loops 30u and 30d of material from the scroll or wrapper sheet 14 that are axially spaced along the aforenoted first line and alternatingly displaced along the aforenoted second line in a first direction and in a second direction generally opposite from the first direction. Preferably, as best shown in FIGS. 3 and 4, each thread-receiving opening 31 that is formed by the aforedescribed series of axially spaced and alternatingly displaced loops 30a and 30d has an oblate cross section and is tapered along its long axis to match the pitch of the threaded section 291 of each of the self-tapping sheetmetal screws 29, while the cross section of the screw 29 is generally circular. Still further, it is desirable that the foot portion 27f of the L-shaped flange means 27 at the outer periphery of each of the end wall members 12 and 13 be formed with a cup section 32 adjacent each of the fastener means openings 28 that is complementary with and capable of receiving the axially outermost one of the aforedescribed loops 30d.

The blower unit can be assembled by first connecting the blower impeller 16 to the output rotor 21 of the electric drive motor 22. Next, this impeller-motor assembly can be connected to the motor frame means 23 by inserting the end of the motor 22 opposite its output rotor 21 into the frame means 23, the interior of which is preferably designed to tightly grip the exterior of the body of the motor 22. Then, this impellermotor and frame means assembly can be connected to one of the end wall members 12 or 13 (the left one 12 as shown in FIGS. 1 and 2) by passing the frame means 23 outwardly through the fluid inlet opening 19 and detachably connecting the frame means 23 to that one end wall member 12 by fastening it to the outer wall thereof with the three brackets 24a, 24b, and 24c and the three self-tapping sheetmetal screws 25a, 25b, and 250 which are respectively threaded through the three brackets 24a, 24b and 24c and into engagement with the three apertures 26 a, 26b, and 260 spaced around the fluid inlet opening 19. Desirably, the motor-engaging frame means 23 is sized such that its outer periphery will rest upon the flange means that surrounds the blower inlet opening 19. Finally, this impeller-motor-frame and single end wall member assembly can be aligned and connected with the other end wall member (the right one 13 as shown in FIGS. 1 and 2) and the scroll or wrapper sheet 14 to complete the assembly of the housing means 11 and the blower unit 10. This final step can be easily accomplished by aligning the other end wall member 13 on the opposite end of the blower impeller 16 from that which faces the end wall member 12 which forms a part of the impeller-motor-frame and single end wall member assembly, with the handlelike portions 17 of the two end wall members 12 and 13 arranged parallel to one another; then, wrapping the preformed scroll or wrapper sheet 14 around the blower impeller 16 with the edges at the opposite ends of its first dimension (its width as shown in FIGS. 1, 3 and 4) arranged to respectively rest atop the foot portions 27f of the flange means 27 provided on the outer peripheries of the two spaced apart end wall members 12 and 13; and, finally, connecting together the thus aligned end wall members 12 and 13 and scroll or wrapper means 14 with the readily removable fastener means comprising the plurality of self-tapping sheetmetal screws 29 by passing the threaded section 29! of each of these screws 29 through the fastener means opening 28 provided for it in the upright portion 27a of the flange means 27 and tightly engaging the threaded section 291 of each of the screws 29 with the aforedescribed fastener engaging means 30 that are provided for that purpose by displacement of material from the scroll or wrapper sheet means 14.

And, of special significance, the impeller 16 or any portion of the blower unit 10 that is contained within the assembled novel housing means 11 that is provided in accordance with the present invention can be quickly and easily extracted from within the housing 11 for maintenance or other reasons by removing the readily removable fastener means or sheetmetal screws 29 which connect the impeller-supporting end wall member 12 to the scroll or wrapper means 14, whereupon this impeller-supporting end wall member 12 can be quickly disconnected from the scroll or wrapper means 14 and the impeller 16 or similar blower portions removed from within the housing means 11.

It should be apparent to those skilled in the art that while there has been described what, at present, is considered to be a presently preferred embodiment of this invention in accordance with the patent statutes, changes may be made in the disclosed apparatus without actually departing from the true spirit and scope of this invention. It is, therefore, intended that the appended claims shall cover such modifications and applications as do not depart from the true spirit and scope of the present invention.

What I claim is:

1. Improved means for housing a blower and the like, comprising:

a. end wall means;

b. scroll means having a first dimension extensible along a first line transverse to said end wall means and a second dimension extensible along a second line generally parallel to said end wall means; and

c. readily removable fastener means comprising a selftapping sheet metal screw for quickly connecting said end wall and scroll means to and from one another,

d. said screw having a threaded section extensible along said first line for engagement with complementary means formed by material that is displaced from said scroll means along said second line.

2. The invention of claim 1', wherein a first portion of said material is displaced along said second line in a first direction and a second portion of said material is displaced along said second line in a second direction generally opposite from said first direction.

3. The invention of claim 1, wherein said screw is also extensible along said first line through a fastener means opening provided adjacent the outer periphery of said end wall means.

4. The invention of claim 3, further comprising flange means provided adjacent said end wall means outer periphery and including said fastener means opening.

5. The invention of claim 4, wherein said flange means and said end wall means are formed integrally.

6. Improved means for housing a blower and the like, comprising:

at. end wall means;

b. scroll means having a first dimension extensible along a first line transverse to said end wall means and a second dimension extensible along a second line generally parallel to said end wall means;

c. readily removable fastener means comprising a selftapping sheet metal screw for quickly connecting said end wall and scroll means to and from one another,

d. said screw having a threaded section extensible along said first line for engagement with complementary means formed by material that is displaced from said scroll along said second line; and

e. a fluid inlet opening for the blower being provided in said end wall means which is smaller than the blower portion contained within the housing means, but the blower portion being easily extractable from within the housing means by removing said fastener means.

7. The invention of claim 6, wherein a first portion of said material is displaced along said second line in a first direction and a second portion of said material is displaced along said second line in a second direction generally opposite from said first direction.

8. The invention of claim 6, wherein said screw is also extensible along said first line through a fastener means opening provided adjacent the outer periphery of said end wall means.

9. The invention of claim 8, further comprising flange means provided adjacent said outer periphery of said end wall means and including said fastener means opening.

10. The invention of claim 9, wherein said flange means and said end wall means are formed integrally.

l l. The invention of claim 7 wherein said displaced material comprises a series of loops axially spaced along said first line and altematingly displaced along said second line in said

Patent Citations
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3732030 *Mar 2, 1972May 8, 1973Gen ElectricBlower wheel assembly
US4288202 *Jun 20, 1977Sep 8, 1981Aerojet-General CorporationFan having internal polyhedral strut frame
US4672819 *Aug 26, 1986Jun 16, 1987Diesel Kiki Co., Ltd.Cooling unit
US4787818 *Jul 27, 1987Nov 29, 1988Jenn Industries, Inc.Centrifugal blower assembly
US5052888 *Jul 11, 1990Oct 1, 1991Ibm CorporationDC motor driven centrifugal fan
US5174048 *Jul 10, 1991Dec 29, 1992Shero William KCarpet dryer
US5257467 *Oct 26, 1992Nov 2, 1993Dri-Eaz Products, Inc.Carpet drying apparatus
US5954476 *Aug 12, 1997Sep 21, 1999Fasco Industries, Inc.Snap-fit blower housing assembly and seal method
US6553923 *Apr 23, 2002Apr 29, 2003William Stuart Gatley, Jr.Blower housing with maximized interior spacing
US6908281 *Jul 21, 2003Jun 21, 2005Fasco Industries, Inc.Blower housing for furnace blower assembly
US7001149 *Mar 4, 2004Feb 21, 2006Beckett Air IncorporatedBlower housing assembly with mounting tabs
US7785064Dec 19, 2006Aug 31, 2010Dn-Eaz Products, IncBlower systems and methods having multiple outlets
US8348594 *Oct 23, 2009Jan 8, 2013Foxconn Technology Co., Ltd.Centrifugal fan
US8585362Nov 12, 2009Nov 19, 2013Sunonwealth Electric Machine Industry Co., Ltd.Fan housing and heat dissipating fan with fan housing
US20110058938 *Oct 23, 2009Mar 10, 2011Foxconn Technology Co., Ltd.Centrifugal fan
USRE40818Apr 28, 2005Jul 7, 2009Gatley Jr William StuartBlower housing with maximized interior spacing
Classifications
U.S. Classification415/206, 415/98, 415/214.1, 392/360
International ClassificationF04D29/42
Cooperative ClassificationF04D29/424
European ClassificationF04D29/42C4C
Legal Events
DateCodeEventDescription
Nov 14, 1997ASAssignment
Owner name: AMERICAN STANDARD, INC., NEW JERSEY
Free format text: RELEASE OF SECURITY INTEREST;ASSIGNOR:CHASE MANHATTAN BANK, THE (FORMERLY KNOWN AS CHEMICAL BANK);REEL/FRAME:008869/0001
Effective date: 19970801
Nov 13, 1997ASAssignment
Owner name: AMERICAN STANDARD, INC., NEW JERSEY
Free format text: RELEASE OF SECURITY INTEREST (RE-RECORD TO CORRECT DUPLICATES SUBMITTED BY CUSTOMER. THE NEW SCHEDULE CHANGES THE TOTAL NUMBER OF PROPERTY NUMBERS INVOLVED FROM 1133 TO 794. THIS RELEASE OF SECURITY INTEREST WAS PREVIOUSLY RECORDED AT REEL 8869, FRAME 0001.);ASSIGNOR:CHASE MANHATTAN BANK, THE (FORMERLY KNOWN AS CHEMICAL BANK);REEL/FRAME:009123/0300
Effective date: 19970801
Jun 2, 1993ASAssignment
Owner name: CHEMICAL BANK, AS COLLATERAL AGENT, NEW YORK
Free format text: ASSIGNMENT OF SECURITY INTEREST;ASSIGNOR:BANKERS TRUST COMPANY, AS COLLATERAL TRUSTEE;REEL/FRAME:006565/0753
Effective date: 19930601
Jun 28, 1988ASAssignment
Owner name: BANKERS TRUST COMPANY
Free format text: SECURITY INTEREST;ASSIGNOR:AMERICAN STANDARD INC., A DE. CORP.,;REEL/FRAME:004905/0035
Owner name: BANKERS TRUST COMPANY, 4 ALBANY STREET, 9TH FLOOR,
Free format text: SECURITY INTEREST;ASSIGNOR:TRANE AIR CONDITIONING COMPANY, A DE CORP.;REEL/FRAME:004905/0213
Effective date: 19880624
Owner name: BANKERS TRUST COMPANY, NEW YORK
Feb 14, 1985ASAssignment
Owner name: AMERICAN STANDARD INC., A CORP OF DE
Free format text: MERGER;ASSIGNORS:TRANE COMPANY, THE;A-S SALEM INC., A CORP. OF DE (MERGED INTO);REEL/FRAME:004372/0349
Effective date: 19841226
Owner name: TRANE COMPANY THE
Free format text: MERGER;ASSIGNORS:TRANE COMPANY THE, A CORP OF WI (INTO);A-S CAPITAL INC., A CORP OF DE (CHANGED TO);REEL/FRAME:004372/0370
Effective date: 19840224
Aug 13, 1984ASAssignment
Owner name: TRANE COMPANY, THE
Free format text: MERGER;ASSIGNOR:A-S CAPITAL INC. A CORP OF DE;REEL/FRAME:004334/0523
Owner name: TRANE COMPANY, THE, A WI CORP
Free format text: MERGER;ASSIGNOR:TRANE CAC, INC.;REEL/FRAME:004317/0720
Free format text: MERGER;ASSIGNOR:TRANE CAC, INC.;REEL/FRAME:004324/0609
Effective date: 19831222
Sep 23, 1982ASAssignment
Owner name: TRANE CAC, INC., LA CROSSE, WI, A CORP. OF DE
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GENERAL ELECTRIC COMPANY A NY CORP.;REEL/FRAME:004053/0022
Effective date: 19820915