What is the principle of an electric cooker?
When the rice in the pot is boiling, the water in the pot gradually decreases. When the water begins to evaporate, the temperature in the pot rises from 100. When rose to 103 degrees, the sense of soft magnet is not attracted by magnet, the switch lever for the spring and the gravity and pressure drop, the contact point separately, heating off. At the same time, connect another insulation circuit, keep the temperature of the rice at about 70.
When you press the switch button, switch to the top of the magnet bar with a sense of soft magnet. At this point, the hotline is switched on and heated.
The rice cooker is to use the heating plate to cook at the bottom of the aluminum pan. The heating plate is internally provided with an electric hot wire, and the electric heating wire is controlled by an automatic switch.The central heating plate with a circular hole, the hole has a sense of soft magnetic, it through to the top with the bottom of the spring. This is a pure ferrite. It can be attracted by a permanent magnet at 100 degrees C or less. But when it rises to 103 degrees, it loses magnetism and is no longer attracted by permanent magnets.
