| 摘要 |
PURPOSE:To obtain an automatically water filling apparatus without danger of delivering high temperature hot water and generating water hammering by opening a draining solenoid valve after the reducing of a supply hot water flow control valve and a bypass flow rate control valve down to a minimum flow rate in the starting of an automatic operation of filling hot water. CONSTITUTION:In the starting of filling water automatically, the flow rate of a supply hot water flow control valve 4 is reduced and a draining solenoid valve 11 is opened to weaken water hammering sound. In the half way, when a hot water supplying command is inputted, the flow rate of a bypass flow control valve 9 is controlled to enable the avoiding of danger of delivering high temperature hot water to other cocks. The flow control valves 4 and 9 are provided with a limiter 33 to let a flap 34 abut on it when a valve body 31 closes a valve seat 32 thereby transmitting an ON signal to a controller 21. When an automatically hot water filling switch 23 is turned ON and the closure of the control valves 4 and 9 is judged, the draining solenoid valve 11 is opened and the flow rate of the supply hot water control valves 4 and 9 is controlled and a main solenoid valve 6 is opened to vary the valve travel of a proportional valve 7. Thus, a burner 5 is heated to accomplish an operation of delivering hot water to a bathtub 18. |
