| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a circulating hot water supply system capable of simplifying construction work of hot water supply piping, reducing construction costs, narrowing a piping space, discharging hot water immediately after turning on a hot water supply tap, solving the problem of generation of waste water, and reducing variation of hot water discharging flow rate from the hot water supply tap. <P>SOLUTION: The circulating hot water supply system includes a hot water storage tank 2, the plurality of hot water supply taps 3, a hot water delivering single pipe 4 connected with the hot water storage tank 2, a hot water return single pipe 7, the hot water supply taps 3, a pipe joint 8, and a hot water delivering/hot water return common pipe 10. The hot water delivering/hot water return common pipe 10 is formed by dividing an internal circulation passage of the common pipe 10 into a hot water delivering pipe conduit 16 and a hot water return pipe conduit 17 by a partitioning wall 15 continued in the pipe axial direction, and ends of the hot water delivering pipe conduit 16 and the hot water return pipe conduit 17 are faced to the inside of hot water inflow ports of the hot water supply taps 3, respectively. A switching portion 29 is disposed between a bypass pipe 14 branched from the hot water delivering single pipe 4 and an intermediate part of the hot water return single pipe 7, so that the bypass pipe 14 and the hot water return single pipe 7 are communicated with each other when any of the hot water supply taps 3 is turned on by the switching portion. <P>COPYRIGHT: (C)2008,JPO&INPIT |
