| 摘要 |
PURPOSE:To obtain an economical automatic gas lighting controlling device, by depressing a gas valve by actuating a DC solenoid at the same time when an all-day timer is turned ON, and by holding the valve in the open state by supplying electric current of a capacitor of large capacity to a gas valve holding solenoid installed in a temperature sensor circuit. CONSTITUTION:An LC display, clock module (1.5V drive) of battery type, of less power consumption is used as an all-day timer 12. A capacitor and keep relays are used in a multipoint circuit 13, which functions as a circuit to control power consumption less. About 20sec is thought to be a proper time for the period of opening of a gas valve 5 at the time of lighting, so that a DC solenoid 24 holds the valve 5 for 1sec, and another contact point 19 is added to the all-day timer 12 in order to hold the valve 5 in the open state for the remaining 19sec. The gas valve 5 is held in the open state by a gas valve holding solenoid 6, by supplying current to the solenoid 6 from a capacitor 21 till the thermoelectromotive force rises in a thermocouple 4. With such an arrangement, automatic lighting controlling wiring for each electric appliance and central automatic lighting controlling board can be eliminated. |
