| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerating cycle device and its controlling method, capable of providing high power recovery effect within a broad operation range without reducing an amount of circulating mass flowing through an expansion machine, and realizing efficient operation without losing the reliability. SOLUTION: The refrigerating cycle device at least comprises a compression mechanism 11 which compresses a refrigerant, a radiator 12 which cools the refrigerant discharged from the compression mechanism 11, an expansion mechanism 13 which reduces the pressure of the refrigerant flowing out from the radiator 12 for power recovery, an auxiliary compression machine 15 driven by the power recovery of the expansion mechanism 13, a gas-liquid separator 16 which is in communication with the expansion mechanism 13 and the auxiliary compression mechanism 15, a first pressure reducer 17 which reduces the pressure of the liquid refrigerant flowing out from the gas-liquid separator 16, and an evaporator 18 which evaporates the refrigerant whose pressure has been reduced by the first pressure reducer 17. The gas-liquid separator 16 is configured to separate the refrigerant whose pressure has been reduced by the expansion mechanism 13 and the refrigerant whose pressure has been raised by the auxiliary compression mechanism 15 into a gas refrigerant and a liquid refrigerant. COPYRIGHT: (C)2006,JPO&NCIPI |
