The structure and working principle of the electric kettle After the electric kettle is turned on and heated, the water temperature gradually rises to 100 degrees, the water starts to boil, and the steam impacts the bimetal on the steam switch. The bimetal expands and deforms due to thermal expansion and contraction. Open the switch contact to disconnect the power. If the steam switch fails, the water in the pot will continue to boil until the water is boiled dry, and the temperature of the heating element rises sharply. There are two bimetallic plates located at the bottom of the heating plate. The temperature will rise sharply due to heat conduction, expansion and deformation, and break Turn on the power. Therefore, the safety protection device of the electric kettle is designed very scientific and reliable. This is the triple safety protection principle of electric kettles.
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