| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot water supply system that has a structure capable of maintaining a temperature of hot water in a hot water supply circulation circuit at a constant level without driving a circulation pump during a hot water supply operation, a hot water supply system that enables reduction in electric power consumption of the circulation pump and improvement of the durability of the circulation pump, and the like.SOLUTION: A hot water supply system 1 includes: a heat source machine 2 for heating hot water; a hot water supply circulation circuit 3 comprising a hot water supply going passage 8 leading from the heat source machine 2 to a hot-water tap 5 and a hot water supply return passage 9 leading from the hot-water tap 5 to the heat source machine 2; and a circulation pump 11 installed in the hot water supply return passage 9. A hot water supply heat retention operation is performed to drive the circulation pump 11 ad heat the hot water by the heat source machine 2 when a temperature of hot water in the hot water supply circulation circuit 3 lowers. A water supply passage 6 is connected between the circulation pump 11 and the heat source machine 2 in the hot water supply return passage 9, and the connection section 12 includes an aspirator structure for sucking the hot water upstream of the connection section 12 of the hot water supply return passage 9 in accordance with a flow of water supply.SELECTED DRAWING: Figure 2 |
