| 摘要 |
PURPOSE:To provide the water heater capable of supplying high-pressure constant-temperature water and low-pressure high-temperature water by a method wherein a hot-water reserving tank, heating water and reserving hot-water, a high-pressure constant-temperature water circuit, sending the constant-temperature water by pressure, and a low-pressure high- temperature water circuit, sending out high-temperature water, are provided in the water heater. CONSTITUTION:The water heater is constituted of the hot-water reserving tank 10, heating water from a water feeding unit 19, the high-pressure constant temperature water circuit 20, mixing high-temperature water from the hot-water reserving tank with the water of a water feeding conduit 11 through a constant temperature mixing valve 21 to obtain the constant-temperature water and sending it to an using section 29 by pressure, and the low- pressure high-temperature water circuit 40, sending out the high-temperature water in the hot-water reserving tank into a hot-water supplying conduit 41. The hot-water reserving tank 10 is provided with a heating device to heat water, supplied from the water feeding unit 19 through the feed water conduit 11 to about 80 deg.C and reserve it. The high-pressure constant-temperature water circuit 20 sends the constant-temperature water having the temperature of about 40 deg.C into the using section 29 under a high pressure of about 3kg/cm<2>. When a water cock is opened in the using section 29, a switch 26 is put ON by the fluctuation of a pressure and a pump 23 is operated to send high-pressure constant-temperature water through the constant temperature mixing valve 21.
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