| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerant circulation circuit cooling lubricating oil separated by an oil separator, and cooling refrigerant gas of a suction chamber. SOLUTION: The refrigerant circulation circuit 10 comprises: a compressor C1; the oil separator 52 disposed to a discharge path of the refrigerant gas from a compression mechanism of the compressor C1 to separate the lubricating oil contained in the refrigerant gas; a condenser 41; an expansion valve 42; and an evaporator 43. The refrigerant circulation circuit 10 further comprises an oil return passage 55 returning the lubricating oil separated from the refrigerant gas by the oil separator 52 to the suction chamber 31 and a crank chamber 15. The refrigerant circulation circuit 10 further comprises; a liquid refrigerant jacket 57 disposed on the oil return passage 55; a liquid refrigerant leading passage 65 connecting a downstream area of the expansion valve 42 and the liquid refrigerant jacket 57; and a liquid refrigerant supply passage 69 connecting the liquid refrigerant jacket 57 with the suction chamber 31. COPYRIGHT: (C)2009,JPO&INPIT
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