| 摘要 |
PURPOSE:To contrive to stabilize the temperature of delivery hot water and utilize a water quantity sensor multi-purposely such as the detection of water flow and the like by a constitution wherein the water quantity sensor and a temperature sensor are inserted in the midway of a feed water pipe and combined with a water control valve. CONSTITUTION:An overall control circuit 16 opens solenoid valves for gas use 4 and 5 and inputs the signal of a water quantity sensor 17 to a delivery hot water temperature controller 13, which controls a gas proportional control valve 12 and at the same time calculates the quantity of heat of incoming water based upon the temperature of incoming water measured by 18 and the quantity of the incoming water measured by the water quantity sensor 17. On the other hand, a water control circuit 15 calculates the set quantity of heat based upon the set temperature and said quantity of the incoming water so as to compare with said quantity of heat of the incoming water in order to set the opening of the gas proportional control valve 12. Furthermore, when the water quantity sensor 17 is utilized for filling a bathtub with water, the water quantity sensor 17 is so constituted as to measure the water immediately the filling of the water starts and to close a valve when the set quantity of water is reached. Due to the constitution as mentioned above, the temperature of delivery hot water can be stabilized and multi-purpose application can be developed by utilizing the water quantity sensor 17. |
