Refrigeration – Processes – Compressing – condensing and evaporating
Patent
1985-03-04
1986-03-04
Capossela, Ronald C.
Refrigeration
Processes
Compressing, condensing and evaporating
62505, 310 64, 418 97, F25B 100
Patent
active
045733244
ABSTRACT:
Liquid refrigerant produced in the condenser of a refrigeration system is directed into an expansion device. The expansion device throttles the high pressure liquid refrigerant into the compressor drive motor housing of the compressor assembly within the refrigeration system. Upon entering the motor housing a first portion of the liquid refrigerant flashes into gas at a pressure intermediate compressor suction and discharge pressure. The portion of refrigerant which remains in the liquid state is directed into a jacket surrounding the stator of the compressor drive motor. As the jacket fills with liquid refrigerant, a portion of the refrigerant is directed through passages in the motor stator into contact with the motor rotor. Liquid refrigerant overflowing the jacket and flowing out the ends of the motor through the gap between the rotor and stator drains to the lowermost portion of the motor housing from where it is directed to a second expansion device. Flash gas within the drive motor housing, together with gas generated by motor cooling, is directed out of the motor housing and into the compression chamber of the compressor assembly in order to increase the capacity and efficiency of the refrigeration system.
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Larson James W.
Tischer James C.
American Standard Inc.
Anderson Ronald M.
Beres William J.
Capossela Ronald C.
Lewis Carl M.
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