| 摘要 |
This air conditioner for a vehicle is provided with a compressor (11), a heat dissipater (12), a first decompressor (13), a gas-liquid separator (14), a second decompressor (17), an exterior heat exchanger (18), an intermediate pressure refrigerant flow path (15), a switching device (16), and a control device (40, 50, 113). When there is a request to stop operation of the compressor during a two-stage compression mode, the control device operates the switching device and switches from a refrigerant circuit for the two-stage compression mode to a refrigerant circuit for a one-stage compression mode. The one-stage compression mode is a mode in which at least inflow of the intermediate pressure refrigerant into the intermediate pressure refrigerant flow path is prohibited and the refrigerant remaining in the intermediate pressure refrigerant flow path is discharged from the intermediate pressure refrigerant flow path. The control device stops operation of the compressor after the compressor is operated in the one-stage compression mode for a prescribed time decided in advance. Furthermore, the control device restarts the compressor when the request to stop operation has been canceled. The abovementioned configuration makes it possible, when restarting the compressor after stopping operation of the compressor during the two-stage compression mode, to restart the compressor quickly. |
