Working Principle and Points for Attention in Use of Automatic Flameout Protective Gas Stove

At present, the most popular way of extinguishing protection in the world is thermocouple. Its working principle is that when the thermocouple is heated, it will generate thermoelectric potential, which can make the solenoid valve work. The working principle of the gas stove is as follows: when the knob is pressed and the small fire is ignited, the thermocouple is heated by its flame to generate thermoelectric potential. Thermoelectric potential is introduced into electromagnetic coil through conductor, which generates magnetic field to make solenoid valve suck in, gas valve open, combustion path open and maintain its normal combustion. Once it meets the overflow of Gale or soup water, it extinguishes the fire, the thermoelectric potential of thermocouple quickly drops to zero, the coil loses electricity, the solenoid valve fails, and quickly resets under the action of spring. The valve closes the gas passage and terminates the gas supply to ensure safety.

The distance between the thermocouple and the fire cover should be maintained. Generally speaking, the height of thermocouple should be basically the same as the height of fire cover, with an allowable error of 1 +0.5mm. The distance between thermocouple and fire cover should not be too far. Generally, the distance between thermocouple and fire cover should be kept at 4 +0.5mm. If the installation position is too low, the thermocouple is not heated enough and the thermoelectric potential is not enough, the electromagnetic valve will not suck in and the installation position is too high. The seedlings contact too much and burn out the thermocouple easily. In the same way, too far away, the thermoelectric potential will be insufficient and the solenoid valve will not suck in.