| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump type hot water supply device which stably controls the performance of a compressor and the opening of an electric expansion valve with respect to the change in the vertical movement in a short time, of an outside air temperature. <P>SOLUTION: This heat pump type hot water supply device includes a refrigerating cycle device having a refrigerant circuit constituted by connecting an invertor drive-type compressor, a high pressure-side heat exchanger, a refrigerant expanding device and an evaporator in series, and a hot water storage tank for storing the water for hot water supply, heated by heat pump action of the refrigerating cycle device. The outside air temperature is detected at regular time intervals, and the operational frequency of the invertor drive-type compressor and the opening of the electric expansion valve are controlled on the basis of the detected outside air temperature and a target boiling-up temperature set to the outside air temperature, to achieve a predetermined target discharge temperature of the compressor. <P>COPYRIGHT: (C)2011,JPO&INPIT |
