| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problems in a conventional heat pump water heater running out of hot water and causing the temperature drop of stored hot water as well as requiring a large-sized hot water storage tank because the whole hot water quantity used in the daytime is boiled with electric power at night and stored. <P>SOLUTION: This heat pump type water heater is provided with a heat pump circuit connecting a compressor, a condenser, a pressure reducing device and an evaporator for exchanging heat between air and a refrigerant, sequentially through refrigerant piping; and a stored hot water supply circuit connecting a water supply source, a hot water storage tank, a circulating pump, a water heat exchanger for exchanging heat with the condenser, a selector valve, a hot water supply valve and a water use terminal through water piping. After the use of hot water supply at the water use terminal, tank hot water storage operation is performed, and operation is stopped after storing a prescribed quantity of hot water of prescribed temperature in the hot water storage tank. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
