Patent ID: 6857286

Claim:
A vapor-compression refrigerant cycle system comprising: a compressor for sucking and compressing refrigerant; a radiator that cools high-pressure refrigerant discharged from the compressor; a first evaporator in which refrigerant after being decompressed is evaporated; a second evaporator in which refrigerant is evaporated at a pressure lower than that in the first evaporator; a switching device for switching between a first circulation where the refrigerant after being decompressed is circulated to the first evaporator and a second circulation where the refrigerant is circulated to the second evaporator; wherein: a refrigerant passage portion through which the high-pressure refrigerant from the radiator flows toward the compressor while bypassing the second evaporator when the switching device switches between the first circulation and the second circulation; when the switching device switches to the second circulation from the first circulation, refrigerant circulation into the second evaporator is stopped until the refrigerant pressure in the second evaporator becomes equal to or lower than a predetermined pressure.