Patent ID: 7168264

Claim:
A refrigerant cycling device, wherein a compressor, a gas cooler, a throttling means and an evaporator are connected in serial, and the compressor comprises a first and a second rotary compression elements in serial the first rotary compression element and the second rotary compression element are housed. inside a sealed container, and wherein a refrigerant compressed and discharged by the first rotary compression element is compressed by being absorbed into the second rotary compression element in serial and then is discharged to the gas cooler, and the refrigerant cycling device further comprising: a refrigerant pipe for absorbing the refrigerant compressed by the first rotary compression element into the second rotary compression element; an intermediate cooling loop is connected to the refrigerant pipe in parallel; and a valve device for controlling the refrigerant discharged by the first rotary compression element to flow to the refrigerant pipe or to the intermediate cooling loop.