| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the tapping of high temperature hot water when supplied in a trace amount, while suppressing such a convection flow phenomenon that the high temperature hot water turns around to a medium temperature side. <P>SOLUTION: An intermediate mixture passage is constructed by a tapping pipe 111 for taking hot water out of the upper part of a hot water storage tank 101, a medium temperature tapping pipe 112 for taking hot water out of the approximately intermediate part of the hot water storage tank 101, and a first mixing valve 120 for mixing the hot water from the tapping pipe 111 and hot water from the medium temperature tapping pipe 112. A service side passage is constructed by a second mixing valve 122 for mixing the hot water from the first mixing valve 120 and water from a water supply pipe 105, and a hot water supply pipe for supplying the hot water from the second mixing valve 122 to a hot water supply terminal. The intermediate mixture passage has a predetermined flow path resistance difference between a high temperature side passage for the hot water to be supplied from the tapping pipe 111 and a low temperature side passage for the hot water to be supplied from the medium temperature tapping pipe 112 so that the hot water from the low temperature side passage flows into the first mixing valve 120 on a priority basis. <P>COPYRIGHT: (C)2007,JPO&INPIT |
