US2078508A - Refrigerating apparatus - Google Patents

Description

I M m W a 6 INVENTOR: P 12. P/m/PP,

ATTORNEY- L. A. PHILIPP Y REFRIGERATING APPARATUS April 27, 1937.

Filed Aug. 14, 1954 m st Apr. 21,1931

UNITED STATES PATENT, OFFICE i nnrmcnasrme armasrus Lawrence A. Philipp, Detroit, Mich, assignor to Kelvinator Corporation, Detroit, Mich a corporation of Michigan Application August 14, 1934, Serial No. 739,746

'2 Claims. (Cl. 62-3) used in accordance with the heat to be dissipated.

It is a further object of my invention to pro- 15 vide ,a refrigerating system with a refrigerant condenser and a refrigerant compressor cooled by the same automatically regulated cooling water. v

More specifically it isan object of my inven- 20 tion to provide a water cooled refrigerant condenser and a water cooled refrigerant compressor with means for automatically admitting a regulated quantity of water to thecondenser and means for conducting a divided portion of the 25 gooling water to the compressor from the conenser.

The invention itself. however, bothfas to its,

organization'and its method of operation, together with additional objects and advantages 30 thereof, will best be understood from the following description of specific embodiments when read in conjunction with the accompanying drawing. in which the single figure of .the drawing is a diagrammatic view representing a re- 35 frigerating system provided with a cooling system in accordance with my invention.

Referring more. particularly tothe drawing the apparatus comprises a refrigerant evaporator I from which refrigerant vapor is drawn through 40 a suction line 2 by a compressor 3. As the compressor operates it compresses I the refrigerant vapor which is conducted through a conduit into a condenser. I where its latent heat 01' 'vaporizationis absorbed by a succession of coils 4 it through which water or other cooling medium I passes. As the-temperature of the compressed refrigerant vapor is lowered'by contact with the cooling coils itis liquefied. The liquid refriger ant passes through a conduit It to the evapo- 50 rator I. The admission of liquid refrigerant to the evaporator from the-condenser 8 may be controlled through conduit It by a valve I 6, in the evaporator chamber which is actuated by an associated float l1 and lever mechanism it although my invention is not limited to systems of determined value.

this type and other known regulating arrangements may be used.

For the purpose of removing the heat generated by the operation of the compressor a water Jacket 2| is provided in spaced enclosing relation .5

' around the cylinder and cylinder heat of the compressor. The water jacket 21 of the compressor is connected through a conduit 22 to the outlet pipe 23 from the cooling coils I I in the condenser. A drain pipe-24 extends from a discharge orifice in the water jacket to carry the cooling water to the waste. A branch conduit 28 is connected from an intermediate point on the conduit 22 between the compressor and the condenser and it also discharges water to the waste through a restricted orifice 29. The restricted orifice" is selected to have a proper cross sectional discharge area to build up sufiicient back pressure to cause a suitable portion of the cooling water from the condenser to circulate around the compressor jacket'2l. In actual practise the portion of condenser cooling water to .be passed around the compressor may be about ten percent For example it 10,000 pounds of cooling water per hour must pass through the condenser it 25 would be sufficient to pass about 1,000 pounds of water around the compressor per hour.

It will be apparent that the pipes v23, 28 and 30 which carry cooling water to and from the condenser 8 must bevery heavy pipes 01? large 30 diameter. But the pipe 22 which conducts the water to the compressor may be 'a light pipe of relatively small diameter which may be readily' extended to the compressor even though it be remotely situated. This is a very importantadvantage of the-present installation.

The inlet end of the cooling coil in the 0on denser 8 is connected to the city water mains through a regulating valve 32 which is automatically adjusted by a thermo responsive device. The temperature responsive device for regulating the flow of water may comprise a bulb which is mounted within the condenser I and connected through a small pipe 34 into a flexible metal bellows 35 mounted adjacent the valve. Th e thermo bulb 33 contains a volatile reiriger-. ant or other liquid which will boil and generate vapor pressure when the temperature in the condenser 6 to which itis exposed rises above a pre- The vapor pressure generated within the thermo bulb 33 is transmitted through the small pipe 34 into the flexible bellows 35 which isthereby distended and acti ates the water regulating valve 32 through a connecting rod 30 and crank mechanism 31 to accordingly regulate thefiow of water into condenser from the water mains.

During the operation 01' the compressor the volume of the cooling water admitted is regulated in accordancewith the temperature conditions within the condenser. After the water passes from the condenser 8 through conduits 22 and 28 a portion of it is backed up by the pressure set up in the restricted discharge orifloe 28 and flows through the compressor coolingjacket 2!. s v It'will be seen that I have provided a refrigerating system with cooling means wherein the quantity of cooling medium used for the con- 5 denser andcompressor is automatically regu-- lated by a single thermostatic valve in accord-- ance with the temperature conditions or the sys-.

. tem and the cooling medium is emciently uti lized and divided between the various elements 10 be cooled whereby a small flexible conduit 25 vention in detail, it will be apparent that the invention is not'so limited, and that other i'orms and applications thereof are embraced within the scope oi; the appended claims.

I claim as my invention:

1. In a refrigerating system the combination of a water cooled refrigerant condenser, a retrigerant compressor having va water cooling jacket, conduit means for passing cooling water flce for conducting a portion of the discharged coolingwater to the cooling Jacket oi the compressor.

2. A refrigerating system comprising a fluid cooled condenser, a refrigerant compressor, a jacket extending around at least a portion of said compressor, conduit means for conducting cooling fluid to said condenser, pressure reducing means associated with said conduit, means, and additional conduit means connected to the first conduit means ahead of said pressure reducing means for conducting a portion of said cooling fluid to said jacket.

' 'mwanncn A. PHILIPP.

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