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1. Thermocouple flameout protection device: consists of a thermocouple and a solenoid valve. The solenoid valve is further divided into single-wire and double-wire types. The single-coil solenoid valve does not require battery current during operation, so the cost is relatively low. However, when starting, you need to press the switch and hold it for 4-6 seconds after ignition before releasing, allowing the thermocouple to heat up and the solenoid valve to work, maintaining the engaged state (converting thermal energy into electrical energy). The double-coil solenoid valve, because it has a delay device, first uses battery current to supply the solenoid valve for ignition and opening. The current supply lasts about 6-8 seconds, after which the current disappears, and the solenoid valve works based on the thermoelectric potential generated by the thermocouple. Therefore, the double-coil solenoid valve is sometimes called a zero-second opening valve, and you can release it immediately after pressing. Its disadvantage is that when starting, the ignition controller needs to provide the opening current, making the cost higher than that of the single-coil solenoid valve. (1 day ago)


2. The thermocouple is heated by the flame to generate a thermoelectric potential, and its current can keep the gas solenoid valve engaged. When the flame goes out, the power is lost, and the gas valve closes. (2 days ago)


3. The thermocouple is heated by the flame to generate a thermoelectric potential, and its current can keep the gas solenoid valve engaged. When the flame goes out, the power is lost, and the gas valve closes. (5 days ago)


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The thermocouple is heated by the flame to generate a thermoelectric potential, and its current can keep the gas solenoid valve engaged. When the flame goes out, the power is lost, and the gas valve closes. (6 days ago)


5. The thermocouple is heated by the flame to generate a thermoelectric potential, and its current can keep the gas solenoid valve engaged. When the flame goes out, the power is lost, and the gas valve closes. I'm happy to answer for you (7 days ago