Patent ID: 6516628
Filing Date: 2003-02-11
Classification: B60H,F25B

Abstract:
A refrigerant cycle system comprising:a compressor for compressing and discharging refrigerant; a condenser for condensing refrigerant discharged from the compressor in a cooling mode; a heat exchanger for cooling air in the cooling mode and for heating air in a heating mode; a first gas-liquid separator, disposed between a refrigerant outlet side of the heat exchanger and a refrigerant suction side of the compressor, for separating refrigerant into gas refrigerant and liquid refrigerant and for introducing gas refrigerant into the compressor; and a switching unit for selectively switching one of the cooling mode for cooling air in the heat exchanger by an evaporation of refrigerant, and the heating mode in which gas refrigerant discharged from the compressor is directly introduced into the heat exchanger to heat air, wherein: the first gas-liquid separator has a throttle passage for introducing a part of liquid refrigerant stored in the gas-liquid separator into the compressor; and the condenser includes both first and second heat-exchanging units which are disposed in this order in a refrigerant flow direction, and a second gas-liquid separator disposed between the first heat-exchanging unit and the second heat-exchanging unit for separating refrigerant into gas refrigerant and liquid refrigerant, wherein the second gas-liquid separator is disposed to discharge at least the separated gas refrigerant from the second gas-liquid separator.