US2638753A - Refrigerating unit mounting - Google Patents

Description

May 19, 1953 R. W. DOEG 2,638,753

REFRIGERATING UNIT MOUNTING Filed July 19, 1950 5 Sheets-Sheet l IN VEN TOR.

19mm M5056 BY rroefv f 19? M53 1R. w. DGE@ 2,535,753

REFRIGERATING UNIT MOUNTING Filed July 3.9, 1950 5 Sheess-Shee1I 2 'HMA mmf 4 INVENTOR.

F705' BY RALPH l/z/I 70.55

f, da/fu ArfoRMey May E, H953 R. w. DOE@ 2,538,753

REFRIGERATING UNIT MOUNTING Filed. July 19, 1950 3 Sheets-Sheet 3 INVENToR. EMP/f W- 7056 A Trae/vir Patented May 19, 1953 RERIGERATING UNIT MOUNTING Ralph W. Docg, Detroit, Mich., assigner to Nash- Kelvinator Corporation, Detroit, Mich., a corporation of Maryland Applmtion July 19, 195o, serial No. 114,643

.This invention relates generally to refrigerating apparatus and more particularly` to household type refrigerators.`

It is an object of my invention to provide in a household refrigerator an improved construction and arrangement of cabinet, ue, supports, and moun'ting in the interests of improving the mounting of a refrigerant motor-compressor unit in a machinery compartment of thecabinet.

Another object of the invention is to support a refrigerant motor-compressor unit by means of a single point suspension mounting to the ends of facilitating assembly `of the refrigerator and of decreasing motor-compressor operating noises. l

Another object of the-invention is to "provide, in addition to the single point suspension, mounting members arranged to limit lateral yieldability of the suspension so as to decrease torque induced side-sway of the motor-compressor unit.` i Another object of the invention resides in the provision of supplemental means co-operable withthe single point suspension means to decrease further audible `vibrations emanating from the motor-compressor unit. i

Further objects and advantages f the present invention will be apparent from the `following `description, referenceTTbeing had to the accompanying drawings, wherein a preferred form of the present invention isclearly shown.

In the drawings: T T v Fig. l is a front View partly broken awayand in section of a refrigerator embodying features of my invention. T T

Fig. 2 is a sideview partly broken away and in section of the refrigerator; T T T Fig. 3 is an enlarged, fragmentary sectional View of the refrigeratontaken along theTTTline 3-3 Tof Fig. 1; TT

Fig. 4 is a fragmentary vertical sectional view `of the refrigerator, taken along the line 4 4 Vof Figi;

Fig. 5 is a rear elevational View of a lower portion of the refrigerator; i u T Fig. 6 is an enlarged vertical sectional View of the refrigerator, taken along the` lineiE-llV of Fig'. 4;

Fig. '7 is taken along the line 'IT-1 of Fig. 6; and T Fig.` 8 Vis another detail view in section, taken along the line BT-T-B of Fig. 3.

Referring `to the drawings by characters of reference, the refrigerator embodying my invention comprises, in general, a cabinet Vanda refrig- T erating system including a refrigerant evaporator `a detail view "in horizontal section,

2 Claims. (Cl. (TS2-117.4)

. duit operatively connect the evaporator and the condensing element. The refrigerant delivery condut is preferably a small diameter or capillary tube adapted to meter liquid refrig-` erant to `the evaporator` insufcient amounts to maintain the evaporator refrigerated.

T TThe cabinet 2] may comprise, in general, a casing 32 and a liner 3.4. `'lheseTrnay be boxshaped.` and suitably spaced apart to receive cabinet.

therebetween any of the well-known types cfheat insulation 36 `to decrease heat leakage into the At thefront ofthe cabinet, the edges of the casing 32 and of the liner .till may be spanned by heat breaker strips 38 te close the opening between said edges and to give a finished appearance to the front of the cabinet. A Tdoor 4U is provided to Tclose the front of `the cabinet andmay be hinged to one side of the cabinet proper by suitable hinges 42.

Immediately beneath the evaporator 22, a combination `partition and drip pan` M divides the interior of the cabinet into an upper freezf ing `compartment lil and'a lower food storage compartment t8. Beneath the drip pan lill, a number of shelves 5B may be provided and below the lowermost of the shelves, `the present T cabinet has a pair of laterally positioned storage drawers 52 and below these a storage bin till.

1 The storage drawers 52 may be supportedon T` tanerT 60.

spiral fashion around the top and sides ofthe slide-ways 56 which maybe secured by any suitable `means to the sides ofthe linert'i. The` bin `Elfi may be"`a`sliding'b`in mounted on slides or may be a tiltable bin,`asT may be desired.`

T The evaporator 22 `may comprise a` refrigerant conduit or coil 58 andan extended heat ab#- sorberfin the form of a box-shaped, metal con- The conduit 5B maybe wrapped in container GTG, and may` beT secured in intimate contact therewith by cement or other suitable securing means so as `to attain `efficient heat transfer between the parts.T The conduit has a ,T discharge endconnected to a refrigerant accumulator `62 which may be located on` the rear wall of theu container-6B. i In addition to functioning as aheat-absorbing surface, the` conatmosphere.

tainer 60 provides a large storage space for the reception of ice trays (not shown) and for foods and other items to be frozen. As shown, the evaporator 22 extends from front to rear of the cabinet and substantially across the width thereof to provide large heat absorbing and storage capacity. Adoor 6-3 i ,sprefer.ably provided to close the front of the container Gil tov avoid loss of cold air therefrom when the outer or main door e@ is opened.

At the bottom of the cabinet, the rear walls of casing 32 and liner ill haveinclinedportions @t and 63, respectively, extending., downwardly and forwardly to the cabinet bottom wall; to`

provide an external recess in the cabinet to serve as a machinery compartment l!) for the compressor 2li. The machinery compartment'it may extend substantially the full width, ofthe cab.-

inet and the casing sides may extend down to the bottom of the cabinet to form the sides of the lmachinery compartment,

Overlying 'the rear wall ofV the cabinet is a support and flue member 'i2 to induce upward flow of air over and cool the compressor 24 and also to support the compressor. The `iiue mem- `ber l2 may be formed of sheet-metal and may have a rear wall 'itl andv opposite sidewalls 1li. At opposite sides of the cabinet Z, the flue member l2A is formedwith outturned-anges i8 which may be secured, respectively, to similar inturned flanges 8u formed on the side edges of the casing 32. Screws `82, or other suitable securing means, may be used -to secure the nue member flanges to the casing 4anges du;

The condenser 2t, in the form of a sinuous coil, is mounted on theinner'surface of the flue member 'i2 to utilize the large 'surface of the flue to dissipate the heat of condensation to Bituminouscement, or other suitable securing means, may be providedto'secure vthe Acondenser to `the ue rear wall for emcient heatl transfer therebetween.

Inraccordance with my invention, I' provide a single point suspension or mounting member 8d 4for the compressor -2'4 and support `the `mounting member byl aY cantilever i8 @which 'I, in turn, support on the flue Ymember l2; and -von across member or bar tttcarried by Vthe cabinet. f The cantilever 85 of thepresentl construction 'is in the vform of a horizontal` plate vmember and' is arranged to extend transversely to the `cross Ameinber y33 and vto the broa'dsid'e or rear Ywallr it of the `flue member 72. The rear endjof/ the cantilever t is secured-to the support-flue member 'l2 in any suitable manner, such 'as by welding a downturned ange 9S of Vthe cantilever /86' to and kflat against the Vinner Vsurface vof' the'iiue member l2. Intermediate its ends, 'the cantilever 86 is supportedby the cross member 83 `and may be secured thereto by rivets or by any other suitable means.

Mountedon andadjacentthe free end ofv the cantilever Sii-is lthe-mounting member 311 which is a resilient mounting preferablyn the form of a yhelical spring. `The mounting or spring 8d surrounds a motor-compressor support or stud 32 which is secured'atv its lower end to thejtop or dome of a compressor casingjlv for Vvthe motorcompressor. The support or-stud92 :functions also as a vibration-transmitting, member, transmitting vibrations-emanating `from the motor-compressor to the single mounting springi; The'upper end oft-he-studQZ may be formed Withfahead 95 to seatin a springretainer -which is engaged by the upper end ,ofspringV 34 and urged'thereby .tainen Areinforcing platef to secure .pad 93. is preferably formed with a hollow boss lill extending into the retainer aperture to prevent contact between the metal stud and re- Preferably, the pad 88 is made of rubber, or some suitable rubberized material, which will eiiiciently absorb and dampen audible vibrations.

The motor-compressor unit 2li may be a socalled sealed type of unit in which a suitable ,t compressor (not shown) and a driving electric motor H33 are housed and sealed in a dome-like casing, such as casing Sie. The motor` i638 is located adjacent the top of the casing Si and comprises the usual stator il@ and rotor H2. For further details of the compressor, reference may be had tomy Patent No. 2,199,486 issued May?, 194.0.

As shown more clearly in Fig. 5, the cantilever 86 crosses the member 88 substantially midway of the ends thereof andthe free end of the cantilever projects beyond the cross member into the machinery compartment. where the compresser is hung on the free end of the cantilever by the single mounting spring. `Opposite `ends of the cross member 88 are secured to the iiue flanges, such as by welding, andv these anges may be provided with aligning apertures to receivescrews for securing the cabinet casing and flue member together. Thus, it will be seen that the flue-member '112, the refrigerant condensing element, and the motor-compressor supporting structure, including the cross member t8 and the cantilever St, can be assembled separately from the cabinetl and then, as a unitary structure, be mounted on the back of the cabinet. In the cabinet rear wall, an opening closed by a plate Il@ and a section of insulation allows removal of the evaporator'from the rear of the cabinet, which is advantageous when it is desired to remove the entire system and the abovementioned unitary structure from the cabinet for repair or replacement.

Also forming ya part of the above-mentioned unitary structure is a pair of spaced mounting members i2@ which Aare adapted to limit sidesway of the motor-compressor unit induced by the torsional force of operation of the compressor. Thel mounting members i2@ each comprise, in general, a cushioning member or rubber diaphragm |22'- of tubular' form having an outer, movable end i2-ll-attachedby a bracket 12b tothe motor-compressor casing M and having yan inner, ixed end il attached to the flue rear wall by a pin |36. In the present construction, the brackets H26 are secured respectively to the sides of a larger, U-shaped` bracket H32' which may have end portions E313 secured, such as by welding, to the side-of the motor-compressor casing St, adjacent the 'bottom thereof.` A reinforcing plate 136 mayv be'welded or be'otherwise secured to the rear Wall of the ue member, and the pins I3@ may have enlarged heads 33 welded'to the the parts together. It will be understood thatv in operation, the

motor-compressor -unit 24 will have-an oscillatory motion about its single point suspension, limited by the pair of resilient, side mountings |22 to the end of absorbing and dampening vibrations generated by operation of the unit.

Preferably, the motor-compressor unit 24 is secured against movement for shipping purposes and to this end, a screw |40 may be provided (Fig. 8) to secure the bracket |32 to the flue. At the location of the screw |40, the reinforcing plate |36 is offset from the ue member wall and is formed with a conical recess |42 through which the screw extends to engage the bracket |32. A clamping Washer |44 under the head of the screw is clamped in the recess |36, as shown in dot and dash lines, to hold the unit against movement when in shipment.

From the foregoing description, it will be undesrtood that I have provided an improved support and arrangement of a single suspension mounting for a refrigerant motor-compressor unit at the back of a refrigerator cabinet for general improvement of refrigerators, including facilitating their manufacture and assembly. It will further be understood that I have reduced audible vibrations of the motor-compressor unit by mounting it on a single suspension mounting member supplemented by a noise suppressor. In addition, I have provided for supporting the motor-compressor mounting on the end of a cantilever reinforced by a cross member so as to obtain single point suspension of the unit, while at the same time having the unit and associated parts, such as supports, mounting condenser, etc., all carried by the removable flue member.

Although only a preferred form of the invention has been illustrated, and that form described in detail, it will be apparent to those skilled in the art that various modifications may be made therein without departing from the spirit of the invention or from the scope of the appended claims.

I claim:

l. In refrigerating apparatus, a cabinet having a rear Wall recess, a refrigerant motor-compressor unit received within said recess, said unit tending to oscillate about a vertical axis, a nue member overlying said recess at the back of the cabinet to induce air flow upwardly over said motor-compresser unit, means attaching said ue member to said cabinet, a cross member inwardly of said flue member and secured at opposite ends to said cabinet, an extension member extending transversely of said cross member, said extension member being attached at one end thereof to said flue member and further being attached intermediate its ends to said cross member having a cantilever arm overlying said motor-compressor unit, a resilient mounting member carried by said arm and supporting said motor-compressor unit, a noise suppressor interposed between said resilient mounting member and said arm, a pair of spaced diaphragm members carried by said flue member below said mounting member and arranged to move transversely to said axis, and means attaching said pair of diaphragm members to said motor-compressor unit and to said ue member to limit oscillatory movement of the former.

2. In refrigerating apparatus, an upright support having a laterally extending arm, a motorcompressor unit below said arm, a single point spring mounting suspending said unit from said arm, said unit having oscillatory movement about a vertical axis induced by operating torque of the unit, and a pair of spaced rubber diaphragms attaching said unit below said single point mounting to said upright support between said support and said spring and arranged laterally of the unit for yieldingly opposing oscillatory movement thereof.

RALPH W. DOEG.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,089,748 Clark Mar. 10, 1914 1,139,158 Boerries May 11, 1915 1,716,150 Replogle June 4, 1929 1,802,485 Smith Apr. 28, 1931 2,204,510 Neeson June 11, 1940 2,253,618 Grover Aug. 26, 1941 2,280,554 Steenstrup Apr. 21, 1942 2,400,224 Christensen May 14, 1946 2,438,114 Dennedy Mar. 23, 1948 2,509,614 Phillip May 30, 1950

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