| 摘要 |
PROBLEM TO BE SOLVED: To shorten a time ranging from an energization of a device to a completion of defrosting and prevent a large amount of liquid refrigerant from flowing into a compressor.SOLUTION: There is provided an inner heat exchanger 15 for heat-exchanging between refrigerant flowed out of a water-refrigerant heat exchanger 12 and refrigerant flowed out of an evaporator 14 to heat the refrigerant flowed out of the evaporator 14. Further, when a request for operation of a compressor 11 is attained, a solenoid valve 16 is controlled in such a way that the refrigerant discharged out of the compressor 11 may flow to both an electric expansion valve 13 and a defrosting refrigerant flow passage 17 and the same time the compressor 11 is operated to defrost the evaporator 14.SELECTED DRAWING: Figure 1 |
