| 摘要 |
A hot-water storage type hot-water supply device is provided with a hot-water storage tank (4) into which high-temperature water produced by a heat pump (2) flows from one end side of the tank, into which low-temperature water flows from the other end side, and in which hot water is contained as sequentially accumulating layers of high-temperature water, medium-temperature water having lower temperature than the high-temperature water and higher temperature than low-temperature water, and the low-temperature water; hot-water supply means (42, 48, 50) which causes the hot water in the hot-water storage tank (4) to flow out of the one end side of the hot-water storage tank (4); hot-water supply amount detecting means (62, 66) for detecting the amount of hot water supplied by the hot-water supply means (42, 48, 50); and a control unit which, when a hot-water supply amount (V) detected by the hot-water supply amount detecting means (62, 66) is more than or equal to a predetermined hot-water supply amount (V), holds activation of water heating operation to be performed by the heat pump (2). |
