| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a storage type hot water supply device capable of stably supplying hot water of a target temperature, in the storage type hot water supply device constituted to supply the hot water through a heat exchanger for hot water supply, disposed in a hot water storage tank. <P>SOLUTION: This storage type hot water supply device comprises a heat pump unit 1 for heating the water, the hot water storage tank 21 for storing the warm water heated by the heat pump unit 1, the heat exchanger 22 arranged in the hot water storage tank 21 and for hot water supply for heating the water supplied from the external and supplying hot water, and a mixing valve 31 for hot water supply, mixing the warm water from the heat exchanger 22 for hot water supply and the water supplied from the external. A control section 10 controls an opening of the mixing valve 31 for hot water supply by feedforward control and feedback control on the basis of a hot water supply water outflow temperature and a hot water supply water inflow temperature detected by a hot water supply water-outflow temperature sensor S21, and a hot water supply temperature detected by a hot water supply temperature sensor S22, so that a temperature of the warm water mixed by the mixing valve 31 for hot water supply reaches a hot water supply target temperature. <P>COPYRIGHT: (C)2010,JPO&INPIT |
