HEAT PUMP HOT WATER SUPPLY DEVICE

PROBLEM TO BE SOLVED: To provide a heat pump hot water supply device with a reheating function superior in heating capacity. SOLUTION: The heat pump hot water supply device is provided with a hot water storage tank 15, a heat pump refrigerant circuit 14, a circulation passage 22 for hot water storage, a reheating circuit 26, and a circuit 28 for reheating sending high temperature hot water of a hot water storage tank interior upper part to a heating part 17A side of a heat exchanger 17 for reheating. It is composed so that the passage change over means 29 is provided in a midway part of the circulation passage 22 for hot water storage between a supply opening part 23 of a hot water storage tank 15 lower part and a circulation pump 16 for hot water storage, a termination of the circuit 28 for reheating is connected to the passage change over means, the termination of the circuit for reheating is communicated with the circulation passage 22 for hot water storage more to an upstream side than the circulation pump for hot water storage, and reheating operation of the reheating circuit 26 is carried out in a closed state of the circulation passage 22 for hot water storage between the supply opening part 23 of the hot water storage tank 15 lower part and the circulation pump 16 for hot water storage. COPYRIGHT: (C)2005,JPO&NCIPI