The function of the solenoid valve in gas stoves, the working principle of the solenoid valve in gas stoves

The function of the solenoid valve for gas stoves. The solenoid valve for gas stoves includes a valve cover, a valve plate, a magnetic core in the valve, a coil in the magnetic core, and horizontal bars on the magnetic core. The horizontal bars of the magnetic core are fixedly connected to the reeds. A spring is installed in the middle of the reed as a fulcrum. The spring is fixed on a bracket. A rubber nozzle is installed at one end of the reed. The valve disc is equipped with an air outlet. The air nozzle of the air outlet is opposite to the rubber nozzle on the reed, forming an airway switch structure. . This solenoid valve relies on electromagnetic force to attract, has extremely small starting current, stable and reliable operation, and simple structure. The advantage of the solenoid valve for gas stoves is that it can automatically turn off the gas when there is no fire burning to prevent gas poisoning. There are two types of solenoid valves for gas stoves, one is the thermocouple solenoid valve, and the other is the ion flameout solenoid valve. They can be distinguished according to the type of flameout protection. Generally, the thermocouple is on the right side of the knob valve. , ionic, usually near the elbow of the air pipe. One is installed directly on the gas inlet pipe to control the air intake of the two burners, and the other is installed at the air inlet of each burner. 1. The thermocouple solenoid valve can control the stove eyes separately. The thermocouple shut-off solenoid valve is relatively small in size. The coil inside is single-turn. One wire of the thermocouple is inserted into the contact inside, and another wire is connected to the shell of the solenoid valve. The single-turn solenoid valve is in When igniting, you need to press it for about 5 seconds, otherwise the electromotive force generated by the thermocouple is not enough to attract the solenoid valve. In addition, there is a double-turn solenoid valve. The thermocouple has three wires. In the early stage of ignition, it is powered by the battery. When the thermocouple generates enough electromotive force, the battery gives up power and switches to the thermocouple. 2. The ion flameout solenoid valve realizes overall control. The volume of the ion flameout protection solenoid valve is relatively large. At the end of the gas pipe, connected to the universal joint, when we press the knob, the micro switch is touched. After the pulse ignition is detected, the solenoid valve is closed. When a flameout occurs, the ion flameout device first detects that there is no current flowing through it, and the pulse igniter responds and starts a countdown. If the partial flame is caused by excessive wind, the flame will return to the normal state within a few seconds. If the flame is turned off, there will be no current passing through during the countdown, then the microcontroller will respond and cut off the current to the solenoid valve, thus turning off the gas and avoiding the accident. The working principle of the solenoid valve for gas stoves is that when the thermocouple is heated, it will generate a thermoelectric potential, which can make the solenoid valve work. The working principle of the specific gas stove is: when the knob is pressed and a small fire is ignited, the thermocouple is heated by the flame and generates a thermoelectric potential. The thermoelectric potential is introduced into the electromagnetic coil through the wire, and a magnetic field is generated to attract the solenoid valve, open the gas valve, and open the combustion path to maintain normal combustion. Once there is strong wind or soup water overflows, the flame is extinguished, and the thermoelectric potential of the thermocouple quickly drops to Zero, the coil loses power and the solenoid valve fails. It quickly resets under the action of the spring. The valve closes the gas path and terminates the gas supply to ensure safety. For gas stove thermocouple protection devices, attention should be paid to maintaining the distance between the thermocouple and the fire cover. Generally speaking, the height of the gas stove thermocouple should be basically the same as the height of the fire cover, and the allowable error is 1±0.5mm. The distance between the gas stove thermocouple and the fire cover should not be too far. Generally, the best distance is 4±0.5mm. If the installation position is too low, the thermocouple of the gas stove will not be heated enough and the thermal potential generated will not be enough to cause the solenoid valve to close. If the installation position is too high, the flame contact will be too large and the thermocouple will be easily burned out. In the same way, if it is too far away, the thermocouple will be easily burned out. The thermal potential will be insufficient and the solenoid valve will not close. The above is the function of the solenoid valve for gas stoves. The working principle of the solenoid valve for gas stoves is introduced. If you want to know more related information, please log on to www.diancifa.cc to view it.