Principle of preventing dry boil of electric kettle
The switch for preventing dry heat is at the bottom. When it is dry, the temperature will exceed 100 degrees centigrade. The bimetallic plate is deformed by heating and the power switch is pressed. The electric kettle is powered off.
The principle of bimetallic plate is that 2 different temperature coefficients of metal processing together, the higher the temperature, the 2 metal deformation difference is bigger, deformation to a certain extent, the pressure to the circuit switch.
There is a dry switch on the bottom of the electric kettle.1, electric kettle water automatic power-off and anti dry switch principle is the same. Double metal pieces are used. 2 kinds of deformation, the temperature is not the same.
