| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump type water heater enabling stable operation even when a water inflow temperature from a tank to a water heat exchanger is increased during operation maintaining a discharge temperature of a refrigerant to the water heat exchanger in a predetermined range and capable of suppressing cost increase, in the water heater in which refrigerant pressure on the high pressure side is set to exceed critical pressure. <P>SOLUTION: While executing control to adjust the discharge temperature of the refrigerant to the water heat exchanger 21 to the predetermined range, a control part 33 performs control to suppress heat exchange in an evaporator 25 based on rise in the water inflow temperature of water made to flow in to the water heat exchanger 21 through water inflow piping 27. <P>COPYRIGHT: (C)2010,JPO&INPIT |
