How to fix if the water in the electric kettle does not trip the switch? First, let's analyze the reasons. Generally speaking, there are two main problems that will cause the water to boil and not jump. First, check the temperature deformation of the metal sheet. If it is too dirty, it can be cleaned directly. Generally speaking, the physical properties of this metal are not bad. Another common possibility is that the plastic bumps that the deformed metal contacts melt and break, and the metal deforms to trip the switch. At this time, use 502 adhesive to raise the bump, or warp the deformed metal so that the distance from the bump reaches the tripping range.
The electric kettle uses steam to heat the bimetallic sheet, and pushes the switch to realize automatic power-off. The bimetallic sheet is composed of two metals with different expansion coefficients.
As the temperature rises, the metal sheet bends to the side that expands less, and a toggle switch cuts off the power. Because the spring inside the switch keeps the switch in a one-tap state, only a little force and a little movement can make the switch complete. It can be seen that transferring the heat of the steam to the bimetal is a very important part.
There are two ways to transfer steam to the bottom switch of the kettle, one is the simple-looking steam guide hole type in the kettle, and the other is to use the steam guide tube. There is a problem in this link, the hot air cannot blow the bimetal, which will inevitably cause the electric kettle to be turned on and uninterrupted.
The principle of the electric kettle automatically cutting off the power is to use the water vapor generated when the water boils to deform the bimetal of the steam temperature sensing element, and use the deformation to push the power switch through the lever principle, so that the electric kettle automatically cuts off the power after the water boils. If it does not trip after boiling, pay attention to whether the temperature sensing control of the electric kettle fails, resulting in the switch not tripping.
