| 摘要 |
PURPOSE:To prevent a temperature of hot water to be fed at the time of feed of the hot water from reducing suddenly, by connecting a duct pulled out of the lower part of a hot water tank with a flow speed attenuator of the upper part of the inside of the hot water tank through a circulating pump, a heat source part and a flow controlling valve. CONSTITUTION:A taking-in pipe 6 of water provided on the lower part of a hot water tank 3 is ramified into connecting pipes 6a and 6b through a check valve 10, each of which is provided with circulating pumps 4a and 4b and heat source parts 5a and 5b in this order respectively and collected on a connecting pipe 8c. At the initial stage of additional heating, a duct between an orifice plate 22 and a discform movable plate 20 is blocked by contracting a temperature sensing part 18 of a flow controlling valve 16 through sensing of low temperature water at a transitional building-up period of the heat sources 5a and 5b, and as for an opening part it becomes only a small hole part 25 of the orifice plate 22. As for the low temperature water, therefore, at the building- up time of the heat source part, only a very small quantity can be fed to a feed hot water pipe 8. In addition to the above, as it becomes that high temperature water is made to disperse and spout out at a low flow speed by a flow speed attenuator, a temperature of hot water in the inside of the hot water tank 3 is not reduced and a distribution of the temperature of hot water is not spoiled. |
