Introduction to the principle of microwave sterilization equipment
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From the perspective of electrical structure, one type of molecule is called an infinite molecular dielectric, and the other is called a polar molecular dielectric. In general, they are randomly arranged. If they are placed in an alternating electric field, the polar molecular orientation of these media also changes with the polarity of the electric field. This is called polarization. The stronger the applied electric field, the stronger the polarization, the faster the applied electric field polarity changes, and the faster the polarization, the more intense the thermal motion of the molecule and the friction between adjacent molecules.
In this process, the conversion of electromagnetic energy to thermal energy is completed. When the heated substance is placed in the microwave field, the polar molecules oscillate and rub back and forth with the high frequency of several billion times per second with the microwave frequency. It is enough for the material to achieve heat drying in a short time.