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Publication numberUS2797553 A
Publication typeGrant
Publication dateJul 2, 1957
Filing dateMar 23, 1955
Priority dateMar 23, 1955
Publication numberUS 2797553 A, US 2797553A, US-A-2797553, US2797553 A, US2797553A
InventorsErnest A Baillif
Original AssigneeWhirlpool Seeger Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Household refrigerator assembly
US 2797553 A
Abstract  available in
Images(4)
Previous page
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Claims  available in
Description  (OCR text may contain errors)

July 2, 1957 E. A. BAILLIF 2,797,553

HOUSEHOLD REFRIGERATOR ASSEMBLY Filed March 23, 1955 4 Sheets-Sheet 1 I BY fflgNlflgNTOf 4 Shaets-Sheet 2 Filed March 25, 1955 INVENTOR.

llllllltlo July 2,1957 'E. A. BA ILLIF I HOUSEHOLD REFRIGERATOR ASSEMBLY 4 Sheets-Sheet 3 Filed March 25, 1955 INVENTOR. a. z 1% viii 1 July 2, 195 7 E. A. BAILLIF HOUSEHOLD REFRIGERATOR ASSEMBLY Filed March 25, 1955 4 Sheets-Sheet 4 wI/////I//I./////////// I. 'IIII!IIIIIIIIIIIIIIIIIIIIII 11$" M milky/A IN VEN TOR. a Q, imzz;

United States Patent HOUSEHOLD REFRIGERATOR ASSEMBLY Ernest A. Baillif,,.Evansville, Ind., assignor, by mesne assignments,.to 'Whirlpool-Seeger Gorporation, a corporation of "Delaware.

ApplicationzMarchZS, v1955, Serial N0.u496',135

12 Claims. (Cl; 62-1174),

Thepresent invention rel'atesto household refrigerator assemblies;- and .is particularly concerned with improvementsin: such assemblies, by means of which theyare adapted to :operate .ati'a lower sound'leveli One of the objects of: the invention is the provisionzof anximprovedrassembly for the machine compartment of a householdirefrigerator which isadapted to accomplish a quieter. operation, lower compressor temperatures, and higher condensate evaporation rates.

Another objectioftheinvention is'the provision of an improved construction for the rear-part ofthe refrigerator, which .is adaptedto be'kept in a sanitary condition, and anrimproved alrangement for collecting condensate and eliminatingithe possibility of the spilling of condensate resulting from defrost.

Another-object of the: inventionis'the'provision ofan improved: COIlSilllCilOl'llfOl the machine compartment of' a householdrefrigerator," including a specially shaped cover provided with: soundi'absorbent material and 1 adapted to-so enclosefthe"compresson that-satisfactory sound deadening qualitiesareprovided;

Another object of the invention is the provision ofan improved :construction with a more effective path forthe air passing over theievaporation' pan for-condensate, which results ini-improvedzevaporationrates and the mufliing-of sound from the COIUPIBSSOl'llIl its v noise'path from thecompressor tothe front offthe'cabinet.

Another object of: the. invention is the provision of an improved enclosure.for'thennotor compressor, which is adapted. todireet the warm air from the motor compressor awaytfromthe-preecooler so thatthe pre-cooler is sub:- jected to anentrainedistream of-relatively, cool air;.resulting in more effectivevcooling; of the preecoolernand more'etfectivescooling of' the motor and. compressor by the-revaporization. of refrigerant .in :the motor housing Other: objects and advantages of the invention willbe apparent from the following description and the accompanying drawings, in which similar characters of reference indicate similar parts.- throughout the several views;

Referringto the four sheets'of drawings accompanying thisspecification,

Fig ..1..is a.view-'in perspectiveof'the rear of a household refrigerator embodying the invention, showing the. 1 compressoricoverz and. condenser assembly;

Fig..2..is. a-sectionalview taken onthe-plane; of the line 2-2 ofFig. 3, looking in the direction of the arrows, and :showing the details .of. construction of :the condensate pan, motor. compressor mounting, and condenser;

Fig. 3 'is afragmentary sectional view taken onthe plane of the line '3 -3' of.'Fig..2, showing a vertical section through the lower part of the cabinet and the. arrangements for collecting condensate and mufiling sound; v

Fig. 4 is afragmentary sectional view taken on the plane of the line 4-4 of Fig. 3, looking in the direction ofthe arrows;

Fig, 5 is a fragmentary sectional view taken on the plane of theline 5-5 of Fig; 2, looking in the direction of the arrows;

"ice

Fig. 6' is a fragmentary sectional View taken on the plane of the line 6' 6 of Fig. 1, showing the spring supports for thelower end of the condenser;

Fig. 7 is a fragmentary view in perspective of the supports for the upper part of the condenser, as shown in Fig. 1.

Referring to Figs. 13, the householdrefrigeratorsembodying the present invention are preferably embodied-in as cabinet 10 havingan outer shell 11' whichis closed by a backpanel 12', and which'is open at the front and closed byapivoted door 13.

The outer shell has an inner liner 14 separated by insulation' 15 from the outer shell; and the liner 14-hasits bottom 16 sloping toward a drain aperture 17.

The drain aperture 17 isadapted to'receive-the' end18 ofa condensate 'hose 19, which extends through" the bottom panel 20. and through the soundinsulation 21" to discharge condensate'into 'a condensate pan'22. Arubber bushingj23 fits-in the discharge-aperture 17 and leads to the conduit- 19.

In order to'provide space for the motor compressor the outer shell 11- has an inwardly bulging metall'formation 24 at the rear bottom corner of the shell toprovide' space for approximately half of the motor compressor 25, which is supported in the recess 26 that is formedby-this'inward bulge 24;

The rear panel 12- is adapted to support a transverse frame member 27 Fig. 2), whichis-of angle :shape, having a vertical flange 28 and a horizontal flangfe'29; and the frame-member 27 is bent outwardly at SUneareach ofits ends and'near the corners 31 of the shell, which bound the cavity 262 The end portions 32 0f the framemember 27 are'welded, rivetedror otherwise secured to-the back panel12 onthe opposite-sides of thecavity 26, with the frame member 27 extendinghorizontally.

The frame member 27 builges outwardly at: its central portion 23E-(Fig. .2) where'its horizontal flange 29 is turned in suchimanner as'to reduce 'thefront-to-back thickness of the :framemember; which thus requires :less room between themotor'compressori25 and'the condenser 34.

The transverse frame member 27 is located toward the" bottom: of cavity26 and is provided with a-pair of angle brackets 35, each ofwhich has a vertical flange'"36 weldedto the'vertical flange-28 of frame-member 27, and each ofwhich' has a horizontal flange 37 for motor compressor support;

The horizontalfiange 37 is in alignment-with a horizon tal 'flange 38'on=motorhousing brackets 39, which are secured to the motor housing by attaching flanges40. Bolts 41 extend through-cups 42', housing-coil spring 43, engaging washer 44, and supporting flange 38. The bolts also pass throughthe washers 44 and the horizontal flange 38 and are provided with nuts 45, which may be tightened to elampthe h-orizontal'fiange 38 to the cup during shipment: Thenutsiarel loosened to permit the springs to support :the motor compressor housingv during operation:

The rear-panel of the .cabinet supports a condenser structure, whichzisdividedinto a pre-cooiler'portion 47 and a maimcondenser portion 48. The pre-cooler portion of the condensericomp'rises'a-plurality of 'the lower horizontal passes -oftthe tubing 47, the inlet of which is'conne'cted. directly.torthe -motor compressor'outlet by tube49,-which extends-through the sump housing-50 tocarry aWay'the compressedand heated liquid refrigerant from the compressorto the pre-cooler47.

From the pre-cooler the refrigerant is conducted=to the top'of'the motor housing 25'by a tube-50; and a second tube 51, extending from the top of the motor housing, carries the refrigerant vapor to the lowermost maiu condenser'coils'48. Thecon'denser tubing 'forthe main condenser and the pre-cooler extends horizontally and forms a chimney 52 between the back panel and the coils 47, 48, each of which is bent inward at 53 above the corners of a motor compressor cover 54 (Fig. 1) and the tubing is bent back to substantially U shape at 55 and 56 at the corners of the cabinet to connect the horizontal passes together in two separate series of tubing, one of which forms the lower pre-cooler and the upper the main condenser 48.

All of the tubes which form the pre-cooler and the main condenser are preferably secured together by a multiplicity of vertically extending heat radiating wires 57 located on the inside and on the outside of the tubing which forms the condensers, the wires being spaced from each other, but close to each other, and parallel to each other on the opposite sides of the tubing, to which the wires are welded at each part of the tubing which the wires cross. a

The wires are thus in intimate heat conducting relation with the tubing to which theyare welded; and they form a substantially rigid frame for maintaining the shape of the condensers and supporting the tubing.

The condenser assembly, comprising the wires and tubes, and forming the main condenser and pre-cooler condenser, are preferably supported at four points, indicated at 58, 59, 60, and 61 on Fig. l, by spring supports further to be described.

The two upper spring supported assemblies 58 and 59 have their details shown in Fig. 7. Each of these spring condenser supports comprises an angular bracket 62 having a vertical flange 63, which is welded or screwed to the back panel at the inwardly extending flanges 64 of the outer shell 11.

The vertical flange 63 supports a transversely extending vertical flange 64, which may also be secured to the back panel 12, and which carries a horizontally extending flange 65 having a through bore for a bolt 66.

The bolt 66 has its lower end staked in or welded in an aperture 67 in the horizontal flange 68 of a condenser supporting bracket 69. This bracket comprises an angle member having the horizontal flange 68 and the vertical flange 70. The vertical flange 70 has threaded bores for the screw bolts 71, 72, the bores being located so that the screw bolts will be immediately under a pair of horizontal passes 46a and 46b of tubing, forming the main condenser. r

The clamping plate 73 has a pair of registering bores for receiving the screw bolts 71, 72; and when the bolts are threaded home, the two condenser passes are clamped between the flange 70 and the plate 73 and also rest transversely on the bolts. The flange 65 of angle bracket 62 supports a cylindrical metal cup 74 having an aperture for passing the bolt 66 and of sufficient size to house the end of helical coil spring 75.

A cupped washer 76 is mounted on the upper end of bolt 66 for receiving and engaging spring 75; and the cupped washer 76 is engaged by a second washer 77 and a threaded nut 78. The bolt 66 passes through the spring and all washers; and the spring is initially compressed by means of the nut 78 during operation, but carries the weight of the condenser, which depends from bolt 66.

During shipment the nut 78 may be screwed down until the spring is so compressed that both cups engage each other and the flange 65 engages flange 68 and the condenser is rigidly mounted for shipment.

As the cabinet bracket 62 is mounted adjacent the rear, the lateral corners extend inwardly from the left and the right. This locates the bolt 66 in each case at that part of the condenser tubing which is inwardly curved. However, the brackets 69 and 73 may be so located on the tube that the flange 68 extends in proper direction to support the bolt 66 in alignment with the aperture in the horizontal flange 65 of bracket 62.

The upper part of the condenser is thus supported in spaced relation to the rear panel 12 by a pair of assemblies shown in Fig. 7 at the two points 58 and 59.

The lower part of the condenser assembly tends to swing inward and is supported adjacent its bottom at the points 60 and 61 by spring arrangements of the type shown in Fig. 6. Each of these spring arrangements comprises a screw bolt 79 located in a bore 80 in the rear panel 81 and provided with a washer 82 and nut 83. The bolt 80 passes through a circular loop 84 formed in one end of the helical coil spring 85, which is the type that has its coils spaced from each other.

The loop 84 of the coil spring is tightly clamped between the washer 82 and back panel 81 by tightening the nut 83, causing the spring to project outwardly at substantially right angles to the back panel.

At its other end the spring 85 is formed with a diametrically extending transverse end portion 86, which has a half cylindrical bend 87 midway between its ends and adapted to receive one'of the condenser tubes 46 c. The transverse spring portion 87 is bent toward the last adjacent turns 85a of the coil spring 85 so that it may be spread apart and placed around the tube 460, which is tightly clamped between arm 87 and coil 85a.

As the springs 85 are located at that portion of the condenser tubing which is bent laterally, the spring can be bent laterally into proper position so that its end extends transversely to the curved part of the condenser in each case. The spring coils being initially spaced from each other, when the weight of the condenser is placed upon them, they are compressed into closer position; but they are strong enough to maintain the condenser in spaced relation to the back panel and out of contact with the compressor cover 54.

In order to reduce the noise level of compressor operation the motor compressor is preferably covered at the back by a cover 56, which is wide enough to span the rear opening of the cavity 26, as well as the ends of the frame member 27. This cover 54 has a flat, vertical back wall 88, which is trapezoidal, being slightly narrower at the top than at the bottom.

The back wall 88 is integrally joined to an inwardly sloping upper rear wall 89 also trapezoidal, which terminates at an upper straight edge 90 and which has an obtuse bend at 91 joining it to the back wall 88.

The cover 54 has two side walls 92, which are identical in shape, each of which has a lower rectangular portion and an upper tapered portion joined to the two rear walls 88 and 89. The two side walls 92 of the cover 54 are provided with outwardly turned attaching flanges 93 extending from top to bottom of the cover and angularly engaging the rear panel 12, to which the cover is secured by a plurality of screw bolts 94 passing through the attaching flange 93; and these may be screws of the selfthreading type, threading into apertures in the back panel.

The inward slope of the upper rear wall 89 permits its open upper end 95 to be located inside the condenser assembly and permits the location of the pre-cooler passes of the condenser below and outside the air opening 95 of cover 54. Thus the pre-cooler is subjected to convection currents of cold air outside the cover 54 and is kept out of contact with the partially heated air that comes upwgud from the motor compressor through the opening 5.

The cover 54 is formed at the lower edge of its back wall 88 with an inwardly extending flange 96 (Fig. 3 )i which overlaps a rearwardly extending top flange 97 on the condensate pan 22. Thus the air, which has access to the lower open end of the motor compressor cover 54, must pass over the condensate pan 22.

The bottom panel 20 of the cabinet shell is provided with suitable guides for the condensate pan 22, which are indicated at 98, 99. Each of these guides may comprise a metal member having a relatively wide web 100 and an angular attaching flange 191 at the top. The attaching and a bottom panel, the said bottom panel being held in spaced relation to the floor supporting the cabinet by a plurality of feet located adjacent the side-edges of the cabinet, said cabinet enclosing a liner, and the liner and shell being formed to provide a cavity at the lower rear corner of the cabinet for receiving a portion of a motor compressor unit, a condenser comprising amultiplicity of outwardly bowed portions of tubing secured to upwardly extending heat radiating members, and forming an air chimney carried by the back of said cabinet, a motor compressor unit mounted in said cavity and projecting rearwardly therefrom, a motor compressor enclosing housing comprising a member having side walls secured to the back panel, a rear wall located below said condenser, and an air directing wall extending upwardly and inwardly of said condenser toward the back panel, the said latter housing and cavity being covered with sound absorbent material for absorbing sound from the motor compressor unit and reducing the sound level under operation.

2. In a household refrigerator, the combination of a cabinet and a compressor-condenser assembly comprising 'a cabinet having an outer shell provided with inwardly extending back flanges, a back panel carried by said back flanges and enclosing the rear of said shell, a condenser assembly comprising a plurality of horizontally extending passes of tubing joined together at the lateral edges of the assembly by U-shaped formations, the said horizontal passes being connected together by a multiplicity of vertically extending wires welded to the outside of said horizontal passes of tubing at the intersections of said wires and tubing and welded to the inside of said tubing at said intersections for radiating "heat from said tubing, the said shell supporting a pair of upper laterally projecting brackets having horizontal flanges provided with through bores, guide members clamped to the condenser assembly adjacent each of said brackets and extending through said bores, said guide members having upper shoulders resting on compression coil springs engaging said flanges for resiliently supporting the weight of said compressor assembly adjacent its upper end, the said back panel being formed at its lower end with a central inwardly bulging cavity formation for receiving a motor compressor, a transversely extending frame member bulged outwardly and having spring means for supporting said motor compressor, and a motor compressor located in said cavity inside said frame member, and an auxiliary cover closed at the back, bottom and both sides, its lateral edges engaging said back panel inside said compressor assembly for directing air upwardly out of the open top of the said cover inside said condenser assembly.

3. In a household refrigerator, the combination of a cabinet and a compressor-condenser assembly comprising a cabinet having an outer shell provided with inwardly extending back flanges, a back panel carried by said back flanges and enclosing the rear of said shell, a condenser assembly comprising a plurality of horizontally extending passes of tubing joined together at the lateral edges of the assembly by U-shaped formations, the said horizontal passes being connected together by a multiplicity of vertically extending wires welded to the outside of said horizontal passes of tubing at the intersections of said wires and tubing and Welded'to the inside of said tubing at said intersections for radiating heat from said tubing, the said shell supporting a pair of upper laterally projecting brackets having horizontal flanges provided with through bores, guide members clamped to the condenser assembly adjacent each of said brackets and extending through said bores, said guide members having upper shoulders resting on compression coil springs engaging said flanges for resiliently supporting the weight of said compressor assembly adjacent its upper end, the said back panel being formed at its lower end with a central inwardly bulging cavity formation for receiving a motor compressor, a transversely extending frame member bulged outwardly and having spring means for supporting said motor compressor, and 'a motor compressor located in said cavity inside saidframe member, and an auxiliary cover closed at the back, bottom and both sides, its lateral edges ongaging said back panel inside said compressor assembly for directing air upwardly out of the open top of the said cover inside said condenser assembly, and sound insulation adhesively attached to the walls of said cavity and i to said cover for absorbing sound from said motor compressorand reducing the sound level.

4. In a household refrigerator, the combination of a cabinet and a compressor-condenser assembly comprising a cabinet having an outer shell provided with inwardly extending back flanges, a back panel carried by said back flanges and enclosing the rear of said shell, a condenser assembly comprising a plurality of horizontally extending passes of tubing joined together at the lateral'edges of the assembly by U-shaped formations, the said horizontal passes being connected together by a multiplicity of vertically extending wires welded to the outside of said horizontal passes of tubing at the intersections of said wires and tubing and welded to the inside of said tubing at said intersections for radiating heat from said tubing, the said shell supporting a pair of upper laterally projecting brackets having horizontal flanges provided with through bores, guide members clamped to the condenser assembly adja cent each of said brackets and extending through said bores, said guide members having upper shoulders resting on compression coil springs engaging said flanges for resiliently supporting the weight of said compressor assembly adjacent its upper end, the said back panel being formed at its lower end with a central inwardly bulging cavity formation for receiving a motor compressor, a transversely extending frame member bulged outwardly and having spring means for supporting said motor compressor, and a motor compressor located in said cavity inside said frame member, and an auxiliary cover closed at the back, bottom and both sides, its lateral edges engaging said back panel inside said compressor assembly for directing air upwardly out of the open top of the said cover inside said condenser assembly, a condensate evaporation pan located beneath said cabinet and extending into engagement with said cover at its rear edge, guide means for said condensate pan at each side extending downwardly from the cabinet and closing the sides, the front end of the condensation pan being spaced from the bottom of the cabinet for admission of air.

5. In a household refrigerator, the combination of a cabinet and a compressor-condenser assembly comprising a cabinet having an outer shell provided with inwardly extending back flanges, a back panel carried by said back flanges and enclosing the rear of said shell, a condenser assembly comprising a plurality of horizontally extending passes of tubing joined together at the lateral edges of the assembly by U-shaped formations, the said horizontal passes being connected together by a multiplicity of vertically extending wires welded to the outside of said horizontal passes of tubing at the intersections of said wires and tubing and welded to the inside of said tubing at said intersections for'radiating heat from said tubing, the said shell supporting a pair of upper laterally projecting brackets having horizontal flanges provided with through bores, guide members clamped to the condenser assembly adjacent each of said brackets and extending through said bores, said guide members having upper shoulders resting on compression coil springs engaging said flanges for resiliently supporting the weight of said compressor assembly adjacent its upper end, the said back panel being formed at its lower end with a central inwardly bulging cavity formation for receiving a motor compressor, a transversely extending frame member bulged outwardly and having spring means for supporting said motor compressor, and a motor compressor located in said cavity inside said frame member, and an auxiliary cover closed at the back, bottom and The attaching flanges 101,"101a are welded or otherwise fixedly secured to the bottom panelwith the two webs of the guides 98, 99 parallel to eachother and spaced suificiently to receive the condensate pan 22.

The two webs 100 of the guides are provided with inwardly directed guide flanges 102 extendingtoward each other at right angles to the webs andadapted to be engaged by the outwardly extending guide flanges 103, forming an integral part of the condensate pan 22. The web 100in each case has an angle member 104 with its vertical flange welded to the web and its horizontal flange 105 spaced from the guide flange 102 to permit the condensate pan to slide freely between these two flanges.

The condensate pan 22 may comprise a substantially rectangular pressed sheet metal pan, which is-fonned on three sides with the projecting flanges 105, 106, and 97; but at its front end the projecting flange 106 has adownwardly turned portion 107, forming a lower handle groove for receiving the fingers, permitting the pan to be manipulated.

The angle members 104, forming the upper guides,

have their horizontal flange 105 bent upwardly at 108,

thus forming a tapered opening for receiving the pan flange 103. Although the pan will never be inserted from the rear ends of the guides, both ends of the angle member 104 are turned up so that they may be identicall for left hand and right hand guides.

The bottom panel 20 of the shellcarries pressedmetal foot pads 109, one of which is welded to the bottompanel that the pan 22 is located with its bottom above the lower surface 110 of the foot pads so that the condensate pan is supported above the floor under all conditions.

The guides 98, 99 close the space 111 between the condensate pan 22 and the bottom panel 20 at each of the lateral edges of the space 111. There is an opening between the bottom panel 20 and the pan 22 atits front edge, which extends rearwardly to the spaoe-belowlthe motor compressor in front of the cover 54, communicating with the cavity 26.

Thus the air, which is required for cooling the motor compressor and associated parts, must pass in at the front of the cabinet below the bottom panel 20 between the foot pads 109 and above the condensate pan 22.

The air is heated by the motor compressor housing 25, 50 and tends to pass upwardly between cover 54 and back panel 12, drawing fresh and cooler air inward from the front.

The width of the cover at the bottom is such that it engages beneath the lateral flanges 103 of the condensate pan and blocks off the access of any air to the space 112 below the compressor, except that air which comes from the front.

1 The cover 54 and rear. part of the condensate pan and cavity walls 24 form a machine compartment for the motor compressor. In order to reduce the noise level of the noise of operation of the motor compressor the cover 54 isprovided with a layer 113 of noise absorbent material, which is adhesively secured to the inside of the cover'54 at its rear walls 88, 89 and its side walls 92. This noise absorbent material may be felt or fiber-glass, or any suitable fibrous sound absorbent material cementedto the cabinet by rubber cement or similar adhesive, one example cated by the number 114. The sound absorbent material also extends -at'115 forwardly under'thebottom panel 20,

7 to which it is cemented and provided with an aperture 116 for the rubber condensate tube 19.

The condensate pan 22 is preferably provided with a pair of transversely extending ai'r baflles 117, 118 (Fig.2)

These bafiiescomprise downwardly open channels. The baflies 117, 118 extend from opposite sides of thepan with their ends 119, 120 spaced from the opposite wall,

thus providing a zigzag path for the air which must pass longitudinally of the baffles around the ends and again along the baffle or transversely to the pan.

The baffles 117 may comprise upwardly tapered, flat topped pressed ribs formed in the bottom of the pan; and they are each provided at their upper edge with rubber tips .121, as shown in Fig. 5. Each rubber tip comprises a resilient, angular rubber member having a horizontal flange 122 secured by screw bolts 123 to the baflies 117, 118.

Each rubber tip has an upwardly extending, resilient, tapered rubber flange 124, which engages the sound insulation 115, which is cemented to the bottom of the bottom panel 20. The sound insulation 115extends forwardly to. such a point that it extends over the battles 117, as-well asthe baffle 118. By this arrangement the sound of the motor compressor is attenuated and absorbed and prevented from raising the noise level at thelfront 'of'the 'back panel by means of four springs adapted to absorb vibration of the condenser.

The auxiliary cover for the motor compressor being lined with sound insulation and the cavity being lined with sound insulation, much of the noise is absorbed and attenuated by this sound insulation, which also extends forwardly under the bottom panel to absorb and attenuate sound which might otherwise escape in that direction.

The auxiliary cover directs heated air by convection currents upwardly inside the chimney, which is formed by the outwardly bowed condenser assembly with its multiple wires and transverse tubes.

The precooler coils which receive the hottest refrigerant directly from the compressor, without passing into the motor housing, are disposed below the outlet of the auxiliary cover so that the precooler is not exposed to heated air coming from the motor compressor but is exposed to fresh and cooler air outside the auxiliary cover.

Condensate gathering in the bottom of the liner is conducted by the tube 19 to the condensate pan 22 and other condensate from an upper evaporator (not shown) is likewise directed to the condensate pan.

Air is drawn in at the front of the cabinet between the feet 109, over the condensate in the pan, following the baffles back and forth sidewise to absorb a maximum of moisture from the surface of the condensate; and the air is then directed upwardly by convection air currents about the motor compressor.

The present assembly operates at a substantially lower soundlevel than the devices of the prior art, and this result is attributed to the construction described, including the soundinsulation and arrangement of parts.

While I have illustrated a preferred embodiment of my invention, many modifications may be made without departing from the spirit of the invention, and I do not wish to be limited to the precise details of construction set forth, but desire to avail myself of all changes within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

1. In a household refrigerator, the combination of a cabinet and a compressor-condenserassembly comprising acabinet having an outer shell provided with a back panel enemas bothf'sides, its "lateral edges engagingsaid' back'p 'n'eli'inside saidcompressor assemblyfor directing air" upward- -1y outof the open top ofthe said cover inside said condenser assembly, a condensate evaporationpan located beneath said cabinet and extendinginto engagement with said cover at its rear edge, guide'means for said conbeing' rovided with sound insulation adhesively attached thereto forabsorbing sound emariatingfrom the motor compressor.

"6.In ahouseh'old refrigerator, the combination of a cabinet" and a compressor-condenser assembly comprising a cabinet'having 'anbuter shell providedwith inwardly extending back flanges, a back panel carried by said back flanges andenclosingthe rear of'said shell, a condenser assembly comprising a"pluralityof horizontally extendingpassesof-tubing joined together at the lateral edges ofthe assembly .by U-shaped formations, the said'h'orizontal passes being connected together by a multiplicity of vertically extending wires welded to the outside of said 'hor'izontalpasses of'tubing at the intersections of said wires and tubing and welded to the insideof said tubing at 'said'intersections forradiating heatfrom said tubing, the saidshell' supporting a pair of upper laterally projecting brackets having horizontal flanges provided with throughbores, guide members clamped to the condenser assembly adjacent each of said brackets and extending Jthroughsaid bores, said guide rn'e'mbershaving upper shoulders resting' on compression coil springs engaging said flanges for resiliently supporting the weight of said compressor assembly adjacent its upper end, the said back;

panel being formed at its lower end with a central inwardlybulging cavity formation for receiving a motor compressor, a transversely extending frame member bulged outwardly and having spring means for supporting 'said motor compressor, and a motor compressor located in said cavity inside said frame member, and an auxiliary cover closed at the back, bottom and both sides, its lateral edges engaging said back panel inside said compressor assembly for directing air upwardly out of the open top of the said cover inside said condenser assembly, a condensate evaporation pan located beneath said cabinet and extending into engagement with said cover at its rear edge, guide mea'nsfor said condensate pan at each side extending downwardly from the cabinet and closing the sidesjthe front end of the condensation panbeing spaced from the bottom of the cabinet for admission of air, the bottom of said cabinet being provided with sound 'insulation adhesively -attached thereto for absorbing sound emanating from the motor compressor, thesaidcondensation'pan"having upwardly ex- "tending bafllesa provided with. resilient extensions em gaging the' sound insulation, the baflles extending-from opposite walls of said condensation pann leaving-an opening at the end of each baflie and providing a zig zag path for air over the condensate.

7. In a household refrigerator, the combination of a cabinet and a compressor-condenser assembly comprising a cabinet having an outer shell provided with a back panel and a bottom panel, the said bottom panel being held in spaced relation to the floor supporting the cabinet by a plurality of feet located adjacent the side edges of the cabinet, said cabinet enclosing a liner, and the liner and shell being formed to provide a cavity at the lower rear corner of the cabinet for receiving a portion of a motor compressor unit, a condenser comprising a multiplicity of outwardly bowed portions of tubing secured to upwardly extending heat radiating members, and forming an air chimney carried by the back of said cabinet, a motor compressor unit mounted in said cavity and projecting rearwardly therefrom, a motor compressor enclosing housing comprising a member having side wallssecured to the back panel, a rear wall located below'said condenser, and an directingiwall extending upwardly and inwardly of said condenser "toward'fthe back panel, the, said lattenhousing and cavitybeing covered with-soundabsorbentfmaterial for absorbing sound from 'themotor compressor unit and reducing the sound level under operation, the said bottom panel fbeingprovided with a pair of depending guide members 'having'guide flangesextending toward each other, and

a condensate pan comprising a metahrnernber adapted to extend from'one guide'to anotherbetween the feet of said'cabinet and towextendbackwardly to said latter housing, said condensate pan having laterally projecting flanges at its upper side edges for engagementon' said guide flanges to support the pan'above the floor level.

8. 'In a household refrigerator, the cornbinationof a cabinet and a compressor-condenser assembly comprising a cabinet having an outer shell. provided with a back panel anda bottom panel, the said bottom panel being'held in spaced relation t0=the floor supporting'the cabinetby a plurality of feet located adjacent the side edges'of the cabinet, said cabinet enclosing a liner, and the liner and "shellbeing-formed toprovide a cavity at the lower rear 'cornerof the cabinet for receiving Ia portion'of a' motor compressorunit, a condenser comprising a multiplicity of outwardly bowed portions of tubing secured to upwardly extending heat radiating members,andforming an air chimneycarried by the back of said cabinet, a'motor compressorunit mounted in said cavity and projecting rearwardly therefrom, a

motor compressor enclosing housing comprising a memher having" side walls secured to the back panel, a rear wall located below said"condenser, and an air directing wall'extending upwardly and inwardly of said condenser "towardthe'back panel, the said latter housing andcavity being covered with sound 'abso'rbent"material for absorbing sound" from themotor compressorunit and reducing the sound level under operation, the said bottom panel being provided with a'pair of depending guide members havingl'guide flanges extending toward each other, and acondensate pan comprising a metal member adapted to extend from one guide to anotherbetween the feet of said cabinet and to extend backwardly to said "latter housing, saidcondensate pan havinglaterally projecting flanges at'its upper side edges for-engagement on a cabinet and a compressor-condenser assembly comprising a cabinet'having an outer shell provided with aback panel and a bottomvpanel, the said bottom panel being held in spaced relation to the floor supporting the cabinet by a plurality of feet-located adjacent the side edges of the cabinet,said cabinet enclosing a liner, and-the liner and shell being forme'd to provide a cavity at the lower rear corner of the cabinet for receiving a portion of a motor compressor unit, a condenser comprising a multiplicity of outwardly bowed portions of tubing secured to upwardly extending heat radiating members, and forming an air chimney carried by the back of said cabinet, a motor compressor unit mounted in said cavity and projecting rearwardly therefrom, a motor compressor enclosing housing comprising a member having side walls secured to the back panel, a rear wall located below said condenser, and an air directing wall extending upwardly and inwardly of said condenser toward the back panel, the said latter housing and cavity being covered with sound absorbent material for absorbing sound from the motor compressor unit and reducing the sound level under operation, the said bottom panel being provided with a pair of depending guide members having guide flanges extending toward each other, and a condensate pan comprising a metal member adapted to extend from one guide to another between the feet of said cabinet and to extend backwardly to said latter housing, said condensate pan having laterally projecting flanges at its upper side edges for engagement on said guide flanges to support the pan above the floor level, said pan being formed with a plurality of upwardly projecting ribs, each extending from an alternate side of the :pan, and terminating short of the opposite side of the pan for providing a sinuous path for air passing over condensate in said pan toward the motor compressor unit.

10. In a household regrigerator, the combination of a cabinet and a compressor-condenser assembly comprising a cabinet having an outer shell provided with a back panel and a bottom panel, the said bottom panel being held in spaced relation to the floor supporting the cabinet by a plurality of feet located adjacent the side edges of the cabinet, said cabinet enclosing a liner, and the liner and shell being formed to provide a cavity at the lower rear corner of the cabinet for receiving a portion of a motor compressor unit, a condenser comprising a multiplicity of outwardly bowed portions of tubing secured to upwardly extending heat radiating members, and forming an air chimney carried by the back of said cabinet, a motor compressor unit mounted in said cavity and projecting rearwardly therefrom, a motor compressor enclosing housing comprising a member having side walls secured to the back panel, a rear wall located below said condenser, and an air directing wall extending upwardly and inwardly of said condenser toward the back panel, the said latter housing and cavity being covered with sound absorbent material for absorbing sound from the motor compressor unit and reducing the sound level under operation, the said bottom panel being provided with a pair of depending guide members having guide flanges extending toward each other, and a condensate pan comprising a metal member adapted to extend from one guide to another between the feet of said cabinet and to extend backwardly to said latter housing, said condensate pan having laterally projecting flanges at its upper side edges for engagement on said guide flanges to support the pan above the floor level, said pan being formed with a plurality of upwardly projecting ribs, each extending from an alternate side of the pan, and terminating short of the opposite side of the pan for providing a sinuous path for air passing over condensate in said pan toward the motor compressor unit, the said ribs supporting upwardly extending flanges of resilient material engaging the sound absorbing material on the bottom panel to close the spaces between the ribs and bottom panel.

11. In a houshold refrigerator, the combination of a cabinet and compressor-condenser assembly comprising a cabinet having an outer shell provided with a back panel and a bottom panel, the said bottom panel being held in spaced relation to the floor supporting the cabinet by a plurality of feet located adjacent the side edges of the cabinet, said cabinet enclosing a liner, and the liner and shell being formed to provide a cavity at the lower rear corner of the cabinet for receiving a portion of a motor compressor unit, a condenser comprising a multiplicity of outwardly bowed portions of tubing secured to upwardly extending heat radiating members, and forming an air chimney carried by the back of said cabinet, a motor compressor unit mounted in said cavity and projecting rearwardly therefrom, a motor compressor enclosing .housing comprising a member having side walls secured to the back panel, a rear walllocated below said condenser, and an air directing wall extending upwardly and inwardly of said condenser toward the back panel, the said latter housing and cavity being covered with sound absorbent material for absorbing sound from the motor compressor unit and reducing the sound level under operation, the said bottom panel being provided with a pair of depending guide members having guide flanges extending toward each other, and a condensate pan comprising a metal member adapted to extend from one guide to another between the feet of said cabinet and to extend backwardly to said latter housing, said condensate pan having laterally projecting flanges at its upper side edges for engagement on said guide flanges to support the pan above the floor level, the said guides also being provided with upper retaining flanges for engaging above the pan flanges, and said upper flanges being belled outwardly at their forward edges.

12. In a houshold refrigerator, the combination of a cabinet and compressor-condenser assembly comprising a cabinet having an outer shell provided with a back panel and a bottom panel, the said bottom panel being held in spaced relation to the floor supporting the cabinet by ,a plurality of feet located adjacent the side edges of the cabinet, said cabinet enclosing a liner, and the liner and shell being formed to provide a cavity at the lower rear corner of the cabinet for receiving a portion of a motor compressor unit, a condenser comprising a multiplicity of outwardly bowed portions of tubing secured to upwardly extending heat radiating members, and forming an air chimney carried by the back of said cabinet, a motor compressor unit mounted in said cavity and projecting rearwardly therefrom, a motor compressor enclosing housing comprising a member having side walls secured to the back panel, a rear wall located below said condenser, and an air directing wall extending upwardly and inwardly of said condenser toward the back panel, the said latter housing and cavity being covered with sound absorbent material for absorbing sound from the motor compressor unit and reducing the sound level under operation, and resilient metal spring means between said cabinet and said condenser for reducing the transmission of sound from one to the other of the cabinet and condenser and reducing the sound level.

References Cited in the file of this patent UNITED STATES PATENTS 1,591,940 Joyce July 6, 1926 2,667,762 Hornaday Feb. 2, 1954 2,687,625 Nedler Aug. 31, 1954

Patent Citations
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2881601 *Jan 24, 1957Apr 14, 1959Whirlpool CoHousehold refrigerators of the cycle defrosting type
US3990262 *Dec 8, 1975Nov 9, 1976General Electric CompanyNatural draft refrigerator including apparatus for permitting the condenser to move between a shipping position and an in-use position
US5107688 *Oct 1, 1990Apr 28, 1992Itw PlastiglideCondensor coil support clip
US5428973 *Nov 13, 1992Jul 4, 1995Kabushiki Kaisha ToshibaRefrigerator with meandering air duct for wire and tube condenser
US5502983 *Apr 12, 1995Apr 2, 1996Whirlpool CorporationApparatus and method of forming a refrigerator condenser
US8590337 *Feb 26, 2010Nov 26, 2013Eletrolux Home Products, Inc.Condenser assembly for an appliance
US20100236762 *Feb 26, 2010Sep 23, 2010Electrolux Home Products, Inc.Condenser assembly for an appliance
EP0298563A1 *Jul 5, 1988Jan 11, 1989Bauknecht Hausgeräte GmbHCollecting device for liquids
EP0718570A2 *Nov 13, 1995Jun 26, 1996Bosch-Siemens Hausgeräte GmbHRefrigeration apparatus, especially refrigerator or freezer
WO2012097948A2 *Dec 29, 2011Jul 26, 2012BSH Bosch und Siemens Hausgeräte GmbHRefrigerator and method for producing a refrigerator
WO2012097948A3 *Dec 29, 2011Feb 21, 2013BSH Bosch und Siemens Hausgeräte GmbHRefrigerator and method for producing a refrigerator
Classifications
U.S. Classification62/295, 62/454
International ClassificationF25D23/00, F25D21/14
Cooperative ClassificationF25D2323/0021, F25D23/003, F25D21/14, F25D23/006, F25D2321/1442
European ClassificationF25D21/14, F25D23/00C