Patent ID: 6981390

Claim:
A refrigerant cycle system comprising: a compressor for compressing refrigerant; a first heat-exchanging portion for cooling and condensing gas refrigerant discharged from the compressor by radiating heat; a gas-liquid separator for separating refrigerant into gas refrigerant and liquid refrigerant, into which all of refrigerant after passing through the first heat-exchanging portion and a part of gas refrigerant discharged from the compressor are introduced; a second heat-exchanging portion disposed downstream of the first heat-exchanging portion, for cooling and condensing refrigerant flowing from the gas-liquid separator by radiating heat; a gas-refrigerant return passage through which at least gas refrigerant in the gas-liquid separator is introduced into the second heat-exchanging portion; a decompression device disposed downstream of the second heat-exchanging portion, for decompressing refrigerant after passing through the second heat-exchanging portion; and an evaporator disposed downstream of the decompression device, for evaporating refrigerant flowing out of the decompression device.