| 摘要 |
PURPOSE:To contrive cost lowering and compactness of a controller of gas combustion, by a method wherein both of control performance and a closing function of a proportional control valve are satisfied, through which a closed nozzle is made unnecessary. CONSTITUTION:The titled device is so constituted that both a closing function and favorable control performance of the proportional control valve 6a are satisfied by making a valve seat 7 and a valve body 8 of a proportional control valve 6a closable by an elastic body 10a for closure through an elastic component 8a and providing a lock releasing circuit 21 aleinating instantaneously only at the time of ignition to a gas burner 15a lock between the valve seat 7 and the valve body 8 due to the effect of the elastic component 8a that has been provided. With this construction a closing solenoid valve becomes unnecessary, the titled device can be made inexpensive, compact and moreover control function can be made favorable. |
