| 摘要 |
PURPOSE:To attain the saving of energy and the assurance of hot water supply by a method in which an auxiliary heater is provided to the water circulating circuit of a heat pump type hot water supplier, and the temperature of hot water is made constant by a control mechanism of circulating water amount. CONSTITUTION:A hot water storage tank 7, a water circulating circuit 8, a pump 9 and an auxiliary heater 10 are provided to the refrigerating circuit of a heat pump consisting of a compressor 1, a condenser 2, an evaporator 4 and a fan 5. The temperature of water coming into the hot water storage tank 7 and the combined operation of the heat pump and the auxiliary heater are made constant by means of a hot water temperature sensor 13. The operation of the heat pump is controllably stopped by the first set value by means of a water temperature sensor 14' at the inlet of the condenser, and the operation of the heater is controllably stopped by the second set value. Uniformly high-temperature hot water can thus be always secured till the lowest portion in the hot water storage tank. |
