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A flame-out protection device is a kind of gas stove safety device. It automatically cuts off the gas source if the flame is accidentally extinguished. This kind of device is mainly composed of thermocouple and electromagnetic valve.
Flame-out protection devices are used to prevent harmful gas from leaking into the burner. They are generally safer than other kinds of burners. For example, flame-out protection devices on a double burner can automatically close the gas path when the flame is extinguished. However, this kind of device can be damaged.
In the case of a failed device, the most common symptom is a low flame. This is because the thermocouple may be damaged. And the flame control circuit may not work well. You need to replace the thermocouple and the valve.
Gas cookers with flame-out protection devices are compliant with national compulsory safety requirements. But before the devices were introduced, there were many problems. These include:
When the gas stove's ignition is triggered, the switch knob is moved to the left. If the knob is not pressed in time, the flame will go out. The ignition controller is then connected to the power supply adaptor.
Once the fire has extinguished, the ignition controller will cut off the holding current to the safety valve. The high potential output is then supplied to the buzzer BI, which emits a warning noise. After a few seconds, the flame-out protection device will cut off the holding current to the safety control valve, thereby shutting off the gas source.
