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Common resistance heating principle of heating plate
Date of publication：2019-07-11

A heating plate converts electrical energy into heat energy to heat an object. Is a form of electricity utilization.

According to the different ways of electric energy conversion, electric heating is usually divided into resistance heating, induction heating, arc heating, electron beam heating, infrared heating and medium heating.

How the heating plate works

High frequency high frequency high current flow direction is made into a ring or other shape of the loop (usually made of red copper tube). Thus, a strong magnetic beam with instantaneous changes in polarity will be generated in the coil. If heated objects such as metals are placed in the coil, the magnetic beam will run through the heated object. In the interior of the heated object, the direction opposite to the heating current will generate a large eddy current corresponding to it. Because there is resistance in the heated object, a lot of joule heat is generated, causing the object's own temperature to rise rapidly. To achieve the purpose of heating all metal materials. Here is a common type of resistance heating.

Heating plate resistance heating

The joule effect of a current is used to change electrical energy into heat energy to heat an object. Usually divided into direct resistance heating and indirect resistance heating. The power supply voltage of the former is directly applied to the heated object. When there is a current flowing through the heated object itself, the ironing machine will generate heat electrically. An object that can be heated directly by resistance must be a conductor with a high resistivity. Since the heat is generated from the heated object itself, it is internal heating, and the thermal efficiency is very high. Indirect resistance heating requires heating elements made of special alloy or non-metallic materials, which generate heat energy that is transmitted to the heated object by means of radiation, convection and conduction. As the heated object and heating element are divided into two parts, the type of heated object is generally unlimited and easy to operate.






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