| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump type hot water supply device capable of suppressing degradation of a boiling-up capacity even when an antifreezing operation time from a stop of boiling-up to a start of boiling-up is over a predetermined value. <P>SOLUTION: This heat pump type hot water supply device is composed of a heat pump unit 100 having a refrigerant circuit configured by successively circularly connecting a compressor 1, a refrigerant-water heat exchanger 2, a pressure reducer 3 and an evaporator 4 by refrigerant piping, and a fan 7, a tank unit 200 having a warm water tank for storing the warm water heated by the refrigerant-water heat exchanger, an operating section 11 connected with the tank unit 200 to perform driving operation, and a warm water circulating device 10 connected between the refrigerant-water heat exchanger 2 and the warm water tank 14. A control section 13 executes a defrosting operation of the evaporator 4 in starting boiling-up when an accumulated value of the antifreezing operation time from the stop of boiling-up to the start of boiling-up is over the predetermined value. <P>COPYRIGHT: (C)2010,JPO&INPIT |
