| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump type water heater capable of accurately and inexpensively detecting a refrigerant condensation temperature in a plate-type water heat exchanger used as a water heat exchanger, and protecting a heat pump cycle. <P>SOLUTION: This heat pump type water heater comprises the heat pump cycle, the plate-type water heat exchanger is used as the water heat exchanger of the heat pump cycle, bypass piping comprising a throttle device is disposed in parallel with the plate-type water heat exchanger, and a temperature sensor is mounted on the bypass piping, so that a temperature of a refrigerant flowing in the bypass piping is detected, and a temperature of the refrigerant flowing in the plate-type water heat exchanger is estimated. <P>COPYRIGHT: (C)2008,JPO&INPIT |
