| 摘要 |
PURPOSE:To permit the supply of a hot water to a bathtub and the reheating thereof and also the filtration and sterilization thereof to be carried out by providing the devices for filtering and sterilizing the hot water between a forced circulation means and a reheating heat exchanger. CONSTITUTION:The hot water produced by a hot water supply heat exchanger 2 is sent by a circulation pump 4 from a hopper 7 through a flow amount sensor 8, a passage switching valve 25, the circulation pump 4, a bypass 9 and a hot water control valve 11 into a supply pipe 19 and, from there, the hot water is poured into a bathtub B. After completion of the hot water supply, a passage switching valve 24 is opened to make a passage change-over so as to start the reheating of the hot water. During this time, the passage switching valves 13 and 14 of a filter device 5 and a sterilization device 6 are switched to form a passage through which the flow of the hot water is supplied into the filter device 5 and the sterilization device 6. In this way the hot water is supplied into the filter device 5 and the sterilization device 6 by the operation of circulation pump 4, while being supplied into a reheating heat exchanger 3 to conduct the heat exchange and the hot water is decontaminated by the filter device 5 and sterilized by the sterilization device 6. |
