| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat pump device capable of performing a heating operation even during a defrosting operation. SOLUTION: As this heat pump device comprises a second evaporator 8 mounted between a first evaporator 5 and a refrigerant suction side of a compressor 1, and exchanging heat between a refrigerant flowing out from the first evaporator 5 and the air, a second expansion means 7 mounted at a refrigerant inflow side of the second evaporator 8, and a second opening/closing valve 6 capable of opening and closing a flow channel bypassing the second expansion means 7, the heat of refrigerant radiating heat in a gas cooler 2 and the first evaporator 5 can be absorbed by the second evaporator 8, thus the hot water can be supplied in the gas cooler 2 even when the first evaporator 5 is defrosted. COPYRIGHT: (C)2007,JPO&INPIT
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