US2321772A - Refrigerating apparatus - Google Patents

Description

June 15, 1943. L, A, PHlLvlPP 2,321,772-

REFRIGERATING APPARATUS original Filed Aug. e, 1940 `Patented June 15, 1943 REFRIGERATING Al-PARATUS Lawrence A. Philipp, Detroit, Mich., assigner to Nash-Kelvinator Corporation, Detroit, Mich., a

corporation of Maryland Original application August 8, 1940, Serial No.

351,834. Divided and this application Novembei' 12, 1942, Serial N0. 465,297

(Cl. (i2-116) v 2 Claims. This invention relates to refrigerating apparatus, and more particularly yto refrigeratlng apparatus of the household type.

'I'he present application is a division of m co-pending application, Serial No. 351,834, iiled August', 1940, for Refrigerating apparatus.

One of the objects of my invention is to provide a new and improved arrangement in a machine compartment of a refrigerator for inducing a natural ow of air over a condensing unit and i'or absorbing sounds emitted by the condensing unit.

Further objects and advantages of the present -invention will be apparent from the following description, reference being had to the accompanying drawing, wherein a preferred form of the present invention is clearly shown.

In the drawing:

The figure in the drawing is a side view of a refrigerator in elevation and partly broken away showing the invention.

Referring to the drawing, the ligure discloses my improved refrigerator cabinet, designated in general by the numeral 20. Within this refrigerator cabinet, I have disposed a refrigerating system which includes a motor compressor unit 25, condenser 2S, heat absorbing unit 30, and an accumulator t0. Evaporated refrigerant is withdrawn from the accumulator 40 through a Vapor return conduit i2 whence it passes to the motor compressor unit 2d wherein it is compressed and from which it is delivered through conduit t5 to condenser 20. In the condenser it is liquefied and from which it is delivered to heat absorbing unit 3 througha small diameter@ tube d8 after first passing through a strainer device 50. The heat absorbing unit is of the non-hooded type wherein droplets of liquid refrigerant are passed into the heat absorbing unit, but due to the absorption of heat very little, if any, liquid refrigetant passes into the accumulator d0. Thus, the refrigerant passing through conduit d2 is gaseous refrigerant and, asA disclosed, I have arranged the conduit 62 in thermal heat exchange relation with the small diameter tube 48 so as to cool the liquid refrigerant passing through the tube 6d. These two conduits may be secured together by solder if desired.

A detailed description of the cooling system unnecessary to a complete understanding of the subject matter herein described and claimed.

Referring more speciilcally to the drawing, the

refrigerator cabinet includes an outer casing and an inner'liner 62. vInsulation 64 is interposed between 4the walls 60 and 62 to insulate a food storage compartment 66 formed by the inner walls of the liner 62. The outer casing extends downwardly to provide a machine compartment;` 68. A base l0 is provided for the cabinet and is open'as at 'l2 to provide for the free circulation of air through the machine compartment.

Within the machine compartment I have disposed my motor compressor unit 2t and condenser 26. The motor compressor unit is mounted upon an `angle iron 16 which is supported by the base 10. At the rear of the cabinet I have provided a flue B0 for aiding and setting up a natural draft ofair over the motor compressor unit and condenser to take the heat of condensation out of the machine compartment 68. It will be noted that on the inner side of the nue 00 I have provided'insulating material 84, which may preferably be of sound absorbing characteristics. As indicated, the insulation is formed of sheet cork. It may, however, be of any suitable fibrous material which has characteristics for sound absorbing. The front of .the cabinet is cutaway as at so as to providean opening for gaining access to the machine compartment. This openingi's closed by a door 92 which'is formed of double walled sheet metal having ends 9d and 05 which carry gasket material 98. These ends are turned in toward each other and are spaced apart so as to receive an angle member |00 carried by the base 10. I By this arrangement it is possible to tilt the door outwardly away from the machine compartment at its upper edge. The angle member |00 may extend from one side of the machine compartment to the other if desired or part way so that it will be sumcient for supporting the weight of the door. On the rear side of the door I have provided a vegetable bin |04 which is secured to the door in any suitable manner and is tiltable with. the door. Thus when the upper part of the door 92 is tilted outwardly awayy from the machine compartment, access may be had to the interior of the vegetable bin. The bin includes bottom wall |06, side walls |08 and rear wall l I0. Secured to the rear wall is a slab of insulating material H2, which as indicated, is formed of sheet cork. This insulating material l|2 like insulating material 84 may be of any characteristics as well as insulation qualities s0 as to insulate the vegetables from the heat of condensation as well as absorb noises created by the motor compressor unit. This vegetable bin may extend from one side of the machine compartment to the other. As will be noted, the condenser is placed on an incline, with the lower portion being directly over the lowermost portion of nue 80 while the upper portion of the condenser is positioned slightly within the machine compartment 68. The condenser is formed of a serpentine coil having spaced apart ns therein so as to be very effective in the dissipation of heat while permitting the free flow of air thereabout. Since the lower part of the cabinet is open at 12 and the lower part of the flue 80 is open to the atmosphere, air may freely pass up through the machine compartment and the flue and over the motor compressor unit and condense;` and out through the flue to thus remove the heat of condensation. By placing the inner wall H0 of the vegetable bin at an angle it tends to guide the ow of air toward the motor compressor unit as the air travels upwardly due to the natural draft ow of air. Also, as air passes upwardly through the flue over the lower portion of the condenser, it tends to create an aspirating effect to draw air through the machine compartment ov r the motor compressor unit at the upperportion of the condenser.

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

I claim: K y

1. Refrigerating apparatus comprising a cabinet having a machine compartment, a flue at the rear of the cabinet and being arranged so that its lower end is open to the atmosphere, a refrigerant compressor positioned in said machine 2. Refrigerating apparatus comprising a cabinet having a machine compartment, a ue disposed at the rear of the cabinet and arranged so that its lower end is open to the atmosphere, a refrigerant compressor positioned in said machine compartment, a refrigerant condenser having a portion positioned in said compartment and a portion in said flue, and a panel positioned in said compartment on an angle on the opposite side of said compressor from said flue and arranged so that the upper portion thereof is tilted toward vsaid flue, said machine compartment being open below said compressor and condenser to receive air to pass over the heat emitting part and into said flue.

' LAWRENCE A. PHILIPP.

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