| 摘要 |
PURPOSE:To supply hot-water with two kinds of temperatures simultaneously, by a method wherein, hot-water with medium temperature is supplied through the delivery port of medium temperature water, a first check valve, a water pipeline and an medium temperature cock while hot-water with high temperature is supplied through the delivery port of high-temperature water, a fourth check valve, the water pipeline and a high-temperature cock. CONSTITUTION:A hot-water reserving type boiler 12, provided with the delivery port 19 of high-temperature water and the delivery port 20 of medium temperature water, is provided. A first - third check valves 27, 24, 26, through which the medium temperature water flows, are connected annularly from the delivery port 20 of the medium temperature water to the return port 21 of the hot-water reserving type boiler 12 sequentially through water pipelines 23, 25. The fourth check vale 28, through which the high-temperature water flows, and a medium temperature cock 29 as well as a high-temperature cock 30, which are connected to the primary side and the secondary side of the second check valve 24, are provided from the delivery port 19 of the high- temperature water toward the primary side of the third check valve 36. As a result, hot-water with two kinds of temperatures may be supplied simultaneously without increasing the number of water pipeline for supplying hot-water or operating a temperature controller.
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