HEAT PUMP WATER HEATER

摘要

PROBLEM TO BE SOLVED: To improve the operation efficiency of a heat pump cycle in boiling up operation for gradually raising the temperature of incoming water to a radiator.

SOLUTION: A heat accumulation means 16 including a high-temperature latent heat accumulating material 22 and a low-temperature latent heat accumulating material 23 is arranged at the refrigerant outlet side of the radiator 2 in the heat pump cycle 5 so that refrigerant is successively carried from the heat accumulating material 22 to the heat accumulating material 23, and city water carried in a water supply circuit 19 is successively carried from the heat accumulating material 23 to the heat accumulating material 22. The city water carried in the water supply circuit 19 the temperature of which is raised by the heat accumulation means is supplied to a mixing valve 15.

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