HEAT PUMP HOT WATER SUPPLY APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a heat pump hot water supply apparatus with a low possibility of running out of hot water by continuing hot water storage operation even during defrosting operation.

SOLUTION: When the outlet temperature of a heat sink 4 is a fixed temperature or lower by a defrosting start sensor 23 during hot water storage operation and also when temperature detected by a water supply temperature detecting sensor 22 is a predetermined temperature or lower, a hot water storage tank mixing circuit 17 of a mixing means 16 is gradually opened to mix hot water of high temperature near the head top of the hot water storage tank 10 with water near the bottom part. The temperature of hot water mixed by the mixing means 16 is detected by a hot water temperature sensor 19 and adjusted by the mixing means 16 to become a moderate hot water temperature.

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