| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump type hot water supply device capable of sufficiently securing heating capacity to the termination of boiling-up even in a case when a defrosting operation is performed. <P>SOLUTION: Conditions that a detection temperature of an outside air temperature sensor 15 is lower than a prescribed temperature, and that a detection temperature Tw of a water inflow temperature sensor 26 is lower than a prescribed temperature, are set as predicted prescribed conditions for the defrosting operation. When the conditions are satisfied before performing the boiling-up operation, the boiling-up operation is performed in a state that a heating capacity of a heat pump circuit 10 in the boiling-up operation is set to be higher than that when the conditions are not satisfied, and in a case when the defrosting operation is performed during the boiling-up operation in a state that the conditions are not satisfied, the boiling-up operation is performed in a state that the heating capacity of the heat pump circuit 10 after the termination of the defrosting operation, is higher than that before the defrosting operation, thus the heating capacity to the termination of the boiling-up can be sufficiently secured even when the defrosting operation is performed. <P>COPYRIGHT: (C)2010,JPO&INPIT |
