US2321771A - Refrigerating apparatus - Google Patents

Description

Patented June 15, 1943.

REFRIGERATING APPARATUS Lawrence A. Philipp, Detroit, Mich, assignor to Nash-Kelvinator Corporation, Detroit, Mich a corporation of Maryland Original application August 23, 1940, Serial No. 353,924. Divided and this application July 18, 1941, Serial No. 403,026

2 Claims.

This .invention relates to refrigerating apparatus, and more particularly to household refrigerators.

The present application is a division of my cofpending application Serial No. 353,924 filed August 23, 1940, for Refrigerating apparatus.

One of the objects of my invention is, to provide an improved arrangement in a machine compartment of a refrigerator for creating a natural draft flow of air over heat emitting apparatus, and to arrange the cabinet so that the walls thereof aid in deadening noises transmitted by said heat emitting apparatus.

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

In the drawing:

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

Referring to the drawingflthere is shown a.

' cabinet, designated in general by the numeral 20.

The cabinet includes a food storage compartment 24 and a machine compartment 26. Within the food storage compartment I have provided a refrigerant evaporating element, designated ingeneral by the numeral 30, and glass shelves 3i. The-food storage compartment 24 is also cooled by a secondary refrigerating system 32.

' Liquid refrigerant is delivered to the evaporating element 30 by a refrigerant liquefying and condensing element 40. The element 40 includes motor compressor unit 42 and condenser 44. The

element 40 is disposed within the machine compartment 2i which-is open at the rear thereof and at the bottom thereof. The motor compressor unit and condenser 44 are secured to and carried by base 50. The condenser is horizontally positioned on a slight angle below the motor compressor unit. The condensing element 40 deliversliquid refrigerant to the evaporator element 3. through asmall diameter or capillary tube 52. This tube constitutes the sole control device for controlling theflow of liquid refrigerant to the evaporating element. Evaporated refrigerant is withdrawn from the evaporating element into a vapor return conduit 54. The vapor return conduit is placed in heat exchange relation with the small diameter tube 52 where the cool gases in the return conduit 54 cool the conduit so that it tends to cool the liquid refrigerant passing through'the conduit 52.

:A detailed description of the cooling system, shelf arrangement and operation of the condensing system is contained in the above application of which this is a division. Further description herein is believed unnecessary to a complete understanding of the subject matter herein described and c1aimed.-

At the rear of the cabinet adjacent the machine compartment, I haveprovided a sound insulating flue 60. Directly opposite the flue 60 and at the front of the machine compartment, I have provided a door 64 which carries a vegetable bin 66. On the rear wall of the vegetable bin 65, I have provided a slab of insulating material 68 which has sound bsorblng characteristics. Preferably, the slab o insulating material and vegetable'bin extend substantially from one side wall to the other of the machine compartment. As will be noted. the slab of insulating material tilts so that the upper end thereof is I closer to the motor compressor unit than the lower endthereof. By this arrangement air enters the lower part of the cabinet about the: cabinet base 10 and passes over thecondenser and through the motor compressor unit and out the flue up the rear of the cabinet. Since the slab of .insulating material 68 is tilted it tends to cause the air to flow toward the motor compressor unit and flue 60. Since the flue 60 is provided of sound insulating material, noises transmitted by the motor compressor unit are absorbed by such insulating material.

-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 without departing from the spirit of the inven-- tion or from the scope of the appended claims.

I claim: l I

1. Refrigerating apparatus comprising a cabinet having a machine compartment open at its rear and bottom, a refrigerant condenser positioned in the lower portion of said compartment, a compressor positioned above said condenser, a sound insulated panel at the rear of said compartment, and a sound insulated tilted panel at the front of said compartment.

2. Refrigerating apparatus comprising a cabinet having a machine compartment open at its rear and bottom, a refrigerant condenser-positioned in the lower, portion of said compartment, a compressor positioned'over and above said condenser and an inclined insulating panel extending across the front of said compartment with the upper part thereof being closer to said compressor than the lower part of said panel.

LAWRENCE A. PHILIPP.

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