| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a heat pump water heater capable of securing a large hot-water supply capacity by simple control even if a hot water storage tank is small, and easily suppressing manufacturing cost. <P>SOLUTION: In the heat pump water heater 130, water supplied from a water supply pipe line 40 is stored in the hot water storage tank 30, and the water is made to flow from the hot water storage tank to a first heat exchanger 3a and boiled to hot water, and then returned to the hot water storage tank and stored. The heat pump water heater includes: a mixing valve 70 for mixing hot water flowing from the hot water storage tank with water flowing from the water supply pipe line; a second heat exchanger 3b for heating the hot water flowing from the mixing valve; hot water supply piping (second hot water supply pipe part 80b) for supplying hot water heated by the second heat exchanger to a water heater destination (hot water faucet 150); a temperature sensor 85 for sensing the temperature of the hot water in the hot water supply piping; and a hot water supply temperature control part for operating the second heat exchanger during hot water supply to the hot water supply destination and controlling a mixing ratio of hot water by the mixing valve by using the sensing result by the temperature sensor to adjust the hot water supply temperature to the hot water supply destination. <P>COPYRIGHT: (C)2010,JPO&INPIT |
