Refrigeration – Automatic control – Refrigeration producer
Patent
1993-12-07
1995-01-17
Tanner, Harry B.
Refrigeration
Automatic control
Refrigeration producer
62278, 62509, F25D 2100
Patent
active
053816650
ABSTRACT:
The present invention aims at providing a refrigerating system capable of cooling a compressor stably using a liquid injection circuit even when defrosting of an evaporator is performed using a gaseous refrigerant of high pressure. The refrigerating system comprises a compressor having a refrigerant discharge side and a refrigerant suction side; a condenser connected to the discharge side of the compressor; a receiver tank connected to a refrigerant outlet side of the condenser; an evaporator connected between a refrigerant outlet side of the receiver tank and the suction side of the compressor; a defrosting circuit which supplies a gaseous refrigerant obtained by gas-liquid separation in the receiver tank to the evaporator to defrost the evaporator; and a liquid injection circuit which supplies a liquid refrigerant obtained by gas-liquid separation in the receiver tank to a low pressure side in the interior of the compressor.
REFERENCES:
patent: 3427819 (1969-02-01), Seghetti
patent: 3580006 (1971-05-01), Quick
patent: 4167102 (1979-09-01), Willitts
patent: 4621505 (1986-11-01), Ares et al.
patent: 4979371 (1990-12-01), Larson
Sanyo Electric Co,. Ltd.
Tanner Harry B.
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