How to distinguish the ignition needle and the induction needle of a gas water heater

The head of the ignition needle is bent short, and the tip of the needle is slightly farther away from the fire row, which is convenient for high-voltage arc bai discharge. The front of the induction needle is bent longer and is close to the nozzle of the fire row. If it is a three-pin arrangement, the middle one is the induction pin, and either end of the next two can be used as the ignition pin. If the components are deformed due to use and cannot be distinguished, the needle position can be determined through experiments.

Ignition needle and induction needle are two different physical structures, and their functions are also different:

1. The ignition needle is an ignition electrode, used for high-voltage pulse discharge to generate electric sparks and ignite the mixed gas and air.

2. The induction needle is a thermocouple, which generates an electric signal in the flame to sense and detect the burning state of the flame

Extended information:

The basic working principle of the gas water heater is that cold water enters the water heater, flows through the water-air linkage valve body, under the action of a certain pressure difference of the flowing water, pushes the water-air linkage valve, and at the same time pushes the DC power micro switch to turn on the power and start the pulse The igniter, at the same time, open the gas solenoid valve, and continue to automatically re-ignite through the pulse igniter until the ignition is successfully entered into the normal working state, and this process will continue for about 5-10 seconds;

When the gas water heater lacks water or water pressure, lack of electricity, lack of gas, excessive hot water temperature, accidental blowing out and other malfunctions during the working process or the ignition process, the pulse igniter will detect the signal feedback from the sensor needle and automatically Cut off the power, the gas solenoid valve will immediately return to the original normally closed valve state in the absence of power, that is to say, the gas has been cut off at this time, and the gas water heater is turned off for safety protection.