| 摘要 |
PURPOSE:To eliminate necessity of draining water stored separately from hot water supply by providing a solenoid air charge valve for closing only an air charge port at the time of supplying hot water. CONSTITUTION:When hot water supply of a bath is finished, a solenoid air charge valve 96 opens an air charge port 93a by its own weight. When the port 93a is opened, the air is introduced from the port 93a to a hot water supply passage between a first hot water supply check valve 92 and a second hot water supply check valve 95 through an air charge chamber 93, thereby breaking off a water flow. At the time of finishing the hot water supply, water fed from the valve 92 downward and water of the chamber 93 are fed toward the lower valve 95, and subsequently fed to a circulation passage 30 side of bath temperature keeping function through the valve 95 while there is hydraulic pressure. Accordingly, the water is not almost stored in the chamber 93. Therefore, necessity of draining of the water from the chamber 93 is eliminated. |
