US2345714A - Refrigerating apparatus - Google Patents

Description

April 4, 1944. PH|LIIPP 2,345,714

REFRIGERATING APPARATUS Original Filed Aug. 8, 1940 INVENTOR. LQWQEI'ICE PIfll-IPP Patented Apr. 4, 1944 Lawrence A. Philipp,

Nash-Kelvin corporation of This invention relates to refrigeriting apparatus, and more particularly to refrigerating apparatus of the multiple temperature type.

The present application is a division of my co-pending application, Serial No. 351,834, filed August 8, 1940, for Refrigerating apparatus.

Another object, of myv invention is to provide an improved refrigerating system which includes heat absorbing means having the different portions thereof separated by a fixed restriction which provides for the operation of one pbrtion Detroit, Mich, assignor to tor Corporation, Detroit, Mich a Maryland Original application August 351,834. Dividedand 8, 1940, Serial No.

this application June 23,

1 Claim. (01. 62-8) sections 28 and 30 than insections 32, 35, 36 and 38. This system is of the non-flooded type wherein droplets of liquid refrigerant are passed into the heat absorbing sections, but due to the absorption of heat very little, if any, liquid refrigerant passes into the accumulator til. Thus, the refrigerant passing through conduit 42 is gaseous refrigerant and, as disclosed, I-have arranged. the conduit 42 in thermal heat'exchange relation with the small diameter tube 48 so as to cool the liquid refrigerant passing through the at a higher pressure and temperature than the refrigerant to the heat absorbing means by a small diameter tube,. and to pass the evaporated refrigerant in thermal heat exchange with said small diameter tube so as to pre-cool the liquid refrigerant in the cabinet.

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: v

The figure in the drawing is a diagrammatic illustration of a refrigerating system illustrating features of my invention;

Referring to the drawing, my improved refrigerating system includes a motor compressor unit 24, condenser 26, high temperature heat absorbing sections 28 and 30, low- temperature refrigcrating sections 32, 34, 3B and 38, and an accumulator 40. Evaporated refrigerant is withdrawn from the accumulator III through a vapor return conduit 42 whence it passes to the motor compressor unit 24 wherein it is compressed and from which it is delivered through conduit 4 to conother portion, and to provide for the flow of liquid denser 2a. In the condenser it is liquefied and I from which it is delivered to heat absorbing section 28 through a'small diameter tube 48 after first passing through a strainer device 50. The refrigerant passes from the section 28 through conduit 52 to the section 30. Before the section 32 from section must pass through a fixed restriction, or small diameter tube-56.. This reduces the pressure of refrigerant flowing to the sections 31, ll, 36 and 38 so as to maintain a highertemperature in the passing to It, the refrigerant tube 68. These two conduits may be securedv together by solder if desired. I

The above refrigerating system may be installed in a cabinet of the type disclosed in the aforementioned application Serial No. 351,834, of which the present application is a division. The system may also beoperated and controlled as disclosed in said co-pending application.

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 I claim.

I claim:

A refrigerating system comprising, a condensing mechanism, high temperature heat absorbing means and low temperature heat absorbing means adapted to receive liquefied refrigerant from said mechanism, a small diameter tube for progressively reducing'the pressure of said liquid flowing from said mechanism to said high tern"- perature means, refrigerant flow control means between said high temperature means and said low temperature means to. maintain one means at a higher pressure andtemperature than the other, a vapor conduit for conducting vaporized refrigerant from said low temperature means to said mechanism and having a Portion thereof thermally united tosaid small diameter tube to precool a refrigerant accumulator connecting the inlet of said conduit with the'outlet of said low temperature means. 7

LAWRENCE A. PHILIPP.

, liquid flowing through said tube. and

Images