The principle of an electric stove is to use the heat emitted by an electric current passing through a highly resistive wire (tungsten wire, like the material in an incandescent lamp) for heating. An electromagnetic stove generates an alternating magnetic field through the components of an electronic circuit board. When an iron containing pot is placed at the bottom of the stove, the pot cuts the alternating magnetic field lines and generates alternating current (i.e. eddy current) in the metal part at the bottom of the pot. The eddy current causes the iron molecules in the pot to move at high speed and irregularly, causing them to collide with each other Friction generates heat energy (therefore, the heat source for cooking in an induction cooker comes from the bottom of the pot rather than the induction cooker itself, which generates heat and transmits it to the pot. Therefore, the thermal efficiency is nearly twice higher than that of all cooking utensils), causing the utensils themselves to generate high speed heat, which is used to heat and cook food, thus achieving the purpose of cooking. Electric stoves can be divided into free placement type and hidden type (embedded in the kitchen counter) according to their installation methods; According to the type of stove heater, it can be divided into fully electric and electric gas dual use types (in addition to electric heaters, there are also 1-2 gas heaters). The electric stove is composed of a shell, an electric heating element, and a temperature control timing system: ① The shell includes three parts: a box body, a control screen, and a box door, all made of thin steel plate. All surfaces exposed to high temperatures should be coated with enamel. The box is divided into two layers, which can be filled with insulation material or air interlayer. The box door is equipped with heat-resistant glass and an interlocking mechanism, which can automatically cut off the power supply when opening the door Electric heating element: divided into two types: stove heating element and stove heating element. The heating element of the stove is installed on the stove surface and can heat various types of pots and utensils. Its typical form is a metal tube electric heating element bent into a disc shape, with adjustable or fixed power. The heating element of the stove is installed inside the stove for baking food. Usually composed of upper baking elements and lower baking elements, commonly metal tube type Temperature control and timing system: The temperature control and timing of electric stoves are mainly used for stoves. The temperature control adopts a bimetallic plate type or temperature sensing bag type temperature controller, and the timing adopts a spring type, electric type, or electronic timer. The total power of electric stoves is generally above 2kW, and some can reach as high as 12kW. Special attention should be paid to the safety issue of overload during installation and use