FREEZING CYCLE APPARATUS

摘要

A freezing cycle apparatus has a two-stage compression device (3) with a low stage side compressor (1) and a high stage side compressor (2), a radiator (4) for cooling a high-pressure gas refrigerant, a pressure reduction device including an expansion device (5) for expanding the high-pressure refrigerant after cooled by the radiator (4), an evaporator (8) for evaporating a low-pressure refrigerant that is reduced in pressure by the pressure reduction device, and a gas injection circuit (10) for introducing an intermediate-pressure gas refrigerant that is reduced in pressure by the pressure reduction device into the suction side of the high stage side compressor (2). The expansion device (5) and the low stage side compressor (1) are coaxially connected.