Gas water heaters, also known as gas water heaters, are gas appliances that use gas as a fuel to transfer heat to the cold water flowing through the heat exchanger by means of combustion heating to achieve the purpose of preparing hot water.
The basic working principle of the gas water heater is that the cold water enters the water heater, and the water-gas linkage valve body pushes the water-gas linkage valve under the action of a certain pressure difference of the flowing water, and simultaneously pushes the DC power micro-switch to turn on the power and start the pulse. The igniter, at the same time, opens the gas transmission electromagnetic valve, and continues to automatically re-ignite through the pulse igniter until the ignition successfully enters the normal working state, the process is continuously maintained for 5 to 10 seconds, when the gas water heater is in the working process or is ignited. When there is a shortage of water or water pressure, lack of electricity, lack of gas, hot water temperature, accidental blowout, etc., the pulse igniter will automatically cut off the power supply by detecting the feedback signal from the induction needle. In the case of lack of power supply, the original normally closed valve state is immediately restored, that is, the gas passage has been cut off at this time, and the gas water heater is turned off to provide safety protection. As shown in the figure is the Wanjiale gas water heater circuit.
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