Non-waiting ignition device of gas combustion range

Abstract

A no-wait ignition device of a gas stove comprises an igniter with a discharging needle, a flame induction needle of which one end can contact flame and generate grounding current after induction flame, and a thermoelectric couple which is connected on the air supply magnetic valve coil in series. The present invention is characterized that the device also comprises a flame induction circuit, an electric source positive pole is connected with a triggering output terminal of the igniter, the electric source negative pole is connected with the other terminal of the flame induction needle, a timing driving circuit, the electric source positive pole and the output terminal of the flame induction circuit are connected, the electric source negative pole ground, the output terminal of the timing driving circuit is connected with the gas supply magnetic valve coil, and the circuit is kept conducting before the thermoelectric couple reaches to absorb the electromotive force of the air supply electromagnetic valve. Compared with the prior art, the ignition device of the present invention comprises a flame induction needle and independent devices of the thermoelectric couple two starting air supply electromagnetic valves. The present invention can realize the object of maintaining electromagnetic valve starting after fast ignition by match of the flame induction circuit and the timing driving circuit, and accord with the national safety criterion for gas combustion range.

Description

technical field [0001] The invention relates to an ignition control device for a stove, in particular to a waiting-free ignition device for an embedded or desktop gas stove. Background technique [0002] In the prior art, there are two most commonly used ignition methods for gas cookers: one is a thermocouple type, and the other is an ion induction needle type. But, generally, all there is certain defective in the gas stove ignition method that adopts one of above-mentioned two ways alone. [0003] First of all, the ion induction needle ignition method can achieve rapid ignition, but because the reaction of the induction needle is relatively sensitive, once the flame leaves the needle, the flame will automatically extinguish, which is easy to cause automatic valve closing phenomenon. In addition, the ion induction needle When in use, battery power is required, which consumes a lot of power. When the battery power of the whole machine is insufficient, the gas stove will not ...

AI Technical Summary

Problems solved by technology

However, the delay circuit structure in the above-mentioned patent structure is relatively complicated, and the national standard GB16410-2005 mandates that two closable valves should be set on any gas passage leading to the burner, generally a plug valve and a gas source Solenoid valve, the functions of the two valves should be independent of each other, so that if there is a problem with one valve, the other will prevent gas leakage and play the role of double insurance

In the ignition control method of the above patent, after the micro switch of the valve body is pressed, the air source solenoid valve is simultaneously pushed open and kept closed under the action of the delay circuit. In this way, the air source solenoid valve has been activated without ignition. Opening in advance does not meet the new national safety standards for gas stoves, and there are major safety hazards

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