| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot water supply device capable of improving operational efficiency and stably utilizing warm water as heat source for reheating bath water and floor heating simultaneously with a reheating operation of the water in a hot water storage tank. <P>SOLUTION: As this hot water supply device includes a second circulation circuit 28 for making the warm water of an upper part of the hot water storage tank 21 flow into a heat exchanger 23 for heating and circulating the warm water flowing out from the heat exchanger 23 for heating to an inflow side of a heat exchanger 12 for hot water supply, of a first circulation circuit 27, and a heat exchanger 14 for heat recovery, connected to a refrigerant flow channel between a second expanding means 15 and the heat exchanger 12 for hot water supply, and exchanging heat between the warm water flowing out from the heat exchanger 23 for heating of the second circulation circuit 28 and the refrigerant, the water of intermediate temperature after utilizing the warm water in the hot water storage tank 21 for air heating, can be heated in the heat exchanger 12 for hot water supply after cooled in the heat exchanger 14 for heat recovery, and the refrigerant recovering the heat of warm water in the heat exchanger 14 for heat recovery, can be made to further absorb heat in a heat exchanger 16 for heat absorption. <P>COPYRIGHT: (C)2010,JPO&INPIT |
