| 摘要 |
PROBLEM TO BE SOLVED: To reduce suction resistance of a refrigerant to a gas compressor and to prevent liquid compression at the restart of the gas compressor.SOLUTION: A check valve 6 which prevents a refrigerant from flowing backward from a suction chamber 19 to an air conditioning system side is provided in a gas compressor 1. After the gas compressor 1 stops operating, the check valve 6 is closed when a differential pressure between a pressure of the refrigerant in the suction chamber 19 and a pressure of the refrigerant at the air conditioning system side is larger than a predetermined value. In contrast, it is opened when the differential pressure is the predetermined value or less, thereby communicating the suction chamber 19 with the air conditioning system in an operation stop condition of the gas compressor 1. |
