| 摘要 |
PURPOSE:To perform gas ignition easily and completely and simplify the structure by driving a valve rod by means of a hysteresis motor provided with a clutch mechanism and a speed sensitive mechanism so as to perform the valve body control slowly. CONSTITUTION:A clutch mechanism operated by the magnetic flux generated by the exciting coil of a motor and a hysteresis motor 9 having a decelerating mechanism are connected to a valve rod 6 as a driving unit. Thereby, when the hysteresis motor 9 is energized, the clutch mechanism is connected, a valve body 3 is slowly driven against a return spring 5 by means of the decelerating mechanism. Therefore, in this gas combustion device, a small quantity of gas is initially fed to perform the ignition easily and completely, and also no special clutch mechanism, microswitch, or the like is required, thus the structure is simplified. |
