US2253618A

US2253618A - Refrigeration apparatus

Info

Publication number: US2253618A
Application number: US250192A
Authority: US
Inventors: Elliott E Grover
Original assignee: Westinghouse Electric and Manufacturing Co
Current assignee: CBS Corp
Priority date: 1939-01-10
Filing date: 1939-01-10
Publication date: 1941-08-26
Anticipated expiration: 1958-08-26

Description

Aug. 26, 1 941.

E. E. GROVER REFRIGERATION PPARATUS Filed Jan. 1o, 19s9 2 She ets-Sheet 1 Vm mm QN mm N? W mm INVENTOR Eamon E, GROVER BY Y ATI'ORNF/O WITNESSES:

'E. E. GROVER REFRIGERATION APPARATUS Filed Jain. 10, .1939 -2 Sheets-Sheet; 2

7 E gunman Fre--4 a v F1e e V INVENTOR WITNESSES-:7

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-E|=u1,o'r'r E- GRoy ATTORNEY Patented Aug. 26, 1941 REFRIGERATION APPABATU S Elliott E. Grover, Springfield, Mass., 'asslgnor to. Westinghouse Electric 8; Manufacturing Company, East Pittsburgh,"Pa., a corporatlonof Pennsylvania 8 Claims.

This invention relates to refrigeration appara tus and more particularly to a means for mount ing the refrigerant condensing unit in a refrigerator cabinet. I

One object of the invention is to provide a ApplicationJanuary 10. 1939,- Serial to. 250,192

IU- of the machine compartment l2 and upwardlythrough an air duct IT. This arrangement of air ducts aids in silencing the noise of a refrigmounting for a refrigerant condensing unit which minimizes the vibration and noises transmitted from the refrigerator unit to the refrigerator cabinet and to the room in which the unit is op "erated.

'Another object of the invention is to provide a resilient mounting for a refrigerant condensing frigerator embodying the invention with the side walls of the machine compartment of the refrigerator broken away;

erant condensing unit I! located in the machine compartment l2.

The refrigerant condensing unit- It comprises a sealed casing l9 housing a reciprocating com- Fig. 2 is a rear elevation of the refrigerator of i Fig. 1 with the lower portion of the air duct and some of the tubing broken away to show the refrigerating unit; Y

Fig. 3 is a detailelevation of the refrigerant condensing mechanism and the resilient supports of the mechanism with parts of the mechanism broken away; v I

Fig. 4 is an enlarged side elevation of the upper .rubber support for the refrigerant condensing unit;

Fig. 5 is an end'elevation of the support of Fig. 4;

Fig. 6 is an enlarged side elevation of oneof the lower supports for the refrigerant condensing unit; and, a v

Fig. '7 is an end elevation of the support shown in Fig. 6. v

Referring now specifically to the drawingsfor a detail description of the invention, the-refer-f ence numeral l0 designates a refrigerator cabinet countered during shipment.

unit III are secured by screws 39 to a metal cross 1 having a food storage compartment H. in the upper portion and a machine compartment l2 in the lower portion. The machine compartment l2 g is cooled by an air duct having its entrance in' ment l2 and outwardly through arear opening rator.

pressor 2| and a motor 22 for'driving the same through a horizontal drive shaft 20. The casing l9 contains lubricating oil (not shown) at a level slightly below the rotor of the motor 22.. The portion of the casing l9 housing the motor 22 is provided with U-shaped cooling fins 23. A refrigerant condenser 24 is secured to the'fins 23 by means of a shroud25. A fan 28 driven by a motor 21 provides for drawing air through the condenser 24 and passing this air'through the U-shaped fins 23.

The various refrigerant ducts are as follows: A suctiontube 23' carries the refrigerant vapor from an evaporator (not shown) in the food storage compartment l l to the interior of the casing IS. A tube 29 carries the compressed refrigerant from the pump 2| in the casing It to the condenser 24, and a capillaryimpedancetube 3| carries the liquefied refrigerant to the evapo- The

tubes

28, 29 and 3| are coiled adjacent the condensing unit l8 to provide for resiliency. As thus far described, the apparatus is old and in all the essential details is similar to theapparatus shown in Patent No. 2,080,595 issued to W. B. Anderson .et a1. andassigned tothe assignee of the present application.

The condensing unit I3 is supported at the rear of the machine compartment 12 by two resilient supports 32. The supports 32 are shown in Figs. 6 and 7 and comprises horizontal rubber cylinder '33 vulcanized at one of its ends to a metal disc 34 having a central screw threaded nipple 35 and at its other end to an upper portion of a bracket 31. The bracket 31 hasa'base 33 formed into a cradle to limit the. movement of the rubber cylinder .33 when severe shocks are en- I To form the cradle. the base has end portions bent upwardly at an angle. The rear supports 32 of the condensing channel 4| in the lower, rear portion of the machine compartment II. The casing ll of .the motorand compressor is provided with a formed steel bracket 42-on each side. These brackets 42 a secured at its upper end to a somewhat similar resilient support 44. This support 44 is shown in detail in Figs. 4 and 5 and comprises a horizontal rubber cylinder 45 vulcanized at each end portion of the yoke 48 and is heldin place by a washer 49 and a nut 5|. The other stud 51 of the support it is secured in a similar manner to the central web 52 of a channel member 53 secured at its upper and lower ends 54 to structural cross members 55 in the machine compartment it. It will be observed that the

rubber cylinders

33 and 35 are stressed in shear and sag under the weight of the condensing unit it as shown in Figs. 1 and3. The weight distribution of the condensing unit it is such that the center of mass represented by Z in Figs. 2 and 3 lies near but slightly above a plane X, Y passed through the center of the movable ends of the

rubber cylinders

33 and 45. In determining this center of mass, the lubricating oil normally in the unit was removed and the coil of the tubes 28 and 3! adjacent the unit it was cut at its midpoint. The weight distribution of the condensing unit it is furthermore such that each of the supports 32 and it are substantially equally loaded.

The particular position of the resilient suping, and means for mounting said unitary structure in said cabinet comprising a plurality of supports having resilient elements near the lower portion of the pump end of said casing and a further resilient element near the upper'portion of said condenser.

2. In a mechanical refrigerator, the combination of a cabinet, a unitary structure comprising a refrigerant pump, a motor adjacent said pump, a condenser at one end of said unitary structure,

a casing for said pump and motor, a fan, and a motor for driving the same, said fan and its driva further resilient element near the upper portion of saidcondenser. t

3. Apparatus according to claim 2 in {which the plurality of resilient elements near the'lower ports 32 and M described produces unusually I quiet operation of the condensing unit. The rubber in the supports provides a relatively resilient cushioning during slight deflections of the unit It such as occur during normal operation. The resiliency of the rubber decreases rapidly, however, when the limit of its defiectability is approached as may occur when the refrigerator is jarred during shipment. This decreased resiliency near the limits of the deflectability of the rubber prevents the refrigerant condensing unit from striking against the cabinet wall during shipment and makes the use ofhold-down bolts or blocking unnecessary. This invention also avoids the necessity of opening the machine compartment at the customers premises to remove the hold-down screws or blocking, which heretofore required considerable time and was sometimes forgotten, necessitating a service call. 1

From the above it will be apparent that this in vention provides a mounting for a refrigerant condensing uni-t which minimizes the vibrations and noises transmitted from the condensing unit to the refrigerator cabinet and to the room in which the unit is operated and further provides a mounting providing protection against jolts portion of the motor end and the resilient element near the upper portion of. the condenser are each loaded substantially equally.

4. In a mechanical refrigerator, the combination of a cabinet, a unitary structure comprising a compressor, a motor for driving the compressor, and a casing for enclosing said motor and compressor, a condenser disposed at one end or said casing, a fan, and a motor for driving the fan, said fan and its driving motor being located between the condenser and the casing, and means for mounting said' unitary structure in said cabinet comprising resilient supporting means disposed near the lower portion of said casing opposite the condenser and further resilient supporting means disposed near the upper portion of said condenser.

which ordinarily would slam the unit against the walls of the cabinet.

While I have shown my invention in but one form, it will be obvious to those skilled in the art that it is not so limited, but is susceptible of various changes and modifications without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are imposed by the prior art or as are specifically set forth in the appended claims.

. What I claim is:

1. In a mechanical refrigerator, the combination of a cabinet, a unitary structure comprising a refrigerant pump at one end thereof, a motor adjacent said pump for driving the same, a condenser on the other side 01 said motor, and 9. casing for said pump and motor, said condenser being substantially at the same level with saidcac:

5. In a mechanical refrigerator, the combination of a cabinet, a unitary structure disposed within the cabinet and comprising a compressor, a motor for driving the compressor and a casing for enclosing said motor and compressor, a condenser disposed substantially in horizontal aline- -ment with the casing,-means for attaching the condenser to the casing and means for mounting said unitary structure in said cabinet comprising resilient supporting means disposed near the lower portion of the end of the casing opposite from the condenser and further resilient supporting means. disposed near the upper portion of said condenser.

6. Apparatus according to claim 5 in which the resilient supports comprise rubber-like material mounted to stress said material in shear.

'7. In a mechanical refrigerator, the combinationof a cabinet, a unitary structure comprising a reciprocating refrigerating pump at one end thereof, a motor adjacent said pump, a condenser at the other end of said unitary structure, a casing for said pump and motor, a fan, and a motor for driving the same, said fan and its driving motor being located between the condenser and the casing, and means for mounting said unitary structure in said cabinet comprising a plurality of rubber supports near the lower portion of the compressor end of said casing and a further rubher support near the upper portion of the condenser.

8. In a mechanical refrigerator, the combination of a cabinet, a unitary structure comprising a reciprocating refrigerating pump at one end the lower portion of the compressor end of said thereof, a'motor adjacent said pump, a condenser casing and a further resilient element near the at the other end of said unitary structure, a, casv upper portion 01 the condenser; said resilient ing for said pump and motor, and means for elements lying in a plane passing close to the mounting said unitary structure in said cabinet 5 center 'of mass of said unitary structure. comprising a. plurality of resilient elements near ELLIOTT E. GROVER.