Patent ID: 7111471

Claim:
A refrigerant cycle apparatus comprising a compressor, a gas cooler, throttling means and an evaporator which are sequentially connected to each other to form a refrigerant circuit, wherein: the compressor includes first and second compression elements in a sealed vessel, and refrigerant compressed in and discharged from the first compression element is taken in the second compression element to be compressed therein and is discharged to the sealed vessel and subsequently to the gas cooler; and the refrigerant cycle apparatus further comprises an intermediate cooling circuit which allows the refrigerant discharged from the first compression element to dissipate heat, and the temperature and the pressure of the refrigerant are kept so that the refrigerant does not condense at the output of the intermediate cooling circuit, and control means for controlling the number of revolutions of the compressor, wherein the control means controls the number of revolutions of the compressor so that the temperature and the pressure of the refrigerant are kept to prevent the refrigerant from condensing at the output of the intermediate cooling circuit.