Do you know the principle of water heater thermostat?

The water heater is one of the kitchen appliances that we often use, and we use it almost every day.

Electric water heater is mainly composed of inner suit, insulation layer, thermostat, heating tube, magnesium rod, etc.. Inner liner made of stainless steel plate, steel plate, etc., withstand 1.2MPa water pressure test does not leak; insulation layer made of polyurethane integral foam. Electric water heater with leakage protection, anti-dry burn protection, anti overtemperature protection and other safety devices. When the electricity is heated, the heating indicator light, when the water temperature reaches the top set temperature, the thermostat contacts off, the heating indicator light off, the electric water heater in a power-off insulation state, the temperature is reduced by about I ℃ every 2 hours (depending on the insulation effect of the insulation layer and the difference), when the water temperature is a few degrees lower than the preset temperature (generally about 7 ℃), the thermostat contacts on. Heating indicator light, the electric water heater in the state of heating power.

When the electric water heater is in the dry or overheating state, overheating protection thermostat bimetal closure, so that the leakage protection plug test button contact short circuit, leakage protection plug action, re-couple button pop-up, heating tube power off. Water heater water temperature than the overheat protection thermostat action temperature is 25 ℃ and above, press the reset button on the head of the leakage protection bracket, the electric heating tube is energized, the water heater and in a normal state; if it is in the case of burning, you need to wait for the heating tube to cool (about 10 minutes later) to add water, add water, press the reset button on the leakage protection plug, the electric heating tube is energized, you can resume normal use.