| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump type water heater, capable of preventing the temperature of a mixed fluid from being lower than a target boiling-up temperature in mixing and discharging hot water supplying fluids passed through different boiling-up passages. <P>SOLUTION: This water heater comprises a first refrigerant-water heat exchanger 19 and a second refrigerant-water heat exchanger 119, which are provided in parallel so that heated hot waters are combined in a combined part 16 of a pipe 12, and a mixed water temperature sensor 27 detecting the temperature of mixed water after combined to the water flow downstream side of the combined part 16. When the second refrigerant-water heater 119 starts heating while the first refrigerant-water heater 19 continues heating, a first heat pump controller 35 controls, based on a detection result of the mixed water temperature sensor 27, the heating state of hot water by the first refrigerant-water heat exchanger 19. <P>COPYRIGHT: (C)2007,JPO&INPIT |
