| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that water of intermediate temperature which is not boiled up by a heat pump type heating means, is increased day by day. <P>SOLUTION: This heat pump type hot water supply device includes a switching means 30 for switching returning of hot water/water heated by the heat pump type heating means 21 to an upper part of a hot water storage tank 1 through a boiling-up pipe 29, and returning of the same to an intermediate part of the hot water storage tank 1 through an intermediate return pipe 28, and a control means 39 for switching the switching means 30 to an intermediate return pipe 28 side in starting a boiling-up operation, to return the hot water boiled up by the heat pump type heating means 21 to the intermediate part of the hot water storage tank 1 from the intermediate return pipe 28 so that the hot water at an upper part with respect to the intermediate return pipe 28 in the hot water storage tank 1, is heated, then switching the switching means 30 to an upper part side of the hot water storage tank 1, of the boiling-up pipe 29 to return the hot water boiled up by the heat pump type heating means 21 to the upper part of the hot water storage tank 1. Thus the water of intermediate temperature can be reduced by heating the water of intermediate temperature by the water of high temperature from the intermediate return pipe 28 in starting the boiling-up. <P>COPYRIGHT: (C)2011,JPO&INPIT |
