The working principle of microwave dryer is mainly based on the penetration of microwave and its interaction with polar molecules in materials. Microwave is a high-frequency electromagnetic wave, and its frequency range is usually between 300 MHz and 300 GHz. Microwaves are penetrating and can heat deep into the material. When microwaves come into contact with materials, microwave energy will be absorbed by polar molecules (such as water molecules) in the material.

 Water molecules in the material are polar molecules with large dielectric constant and dielectric loss factor, so they have strong absorption capacity for microwaves. Under the action of microwave high-frequency electric field, water molecules will repeatedly and rapidly orient and rotate and rub against each other, thereby generating heat. This heat will cause the water in the material to evaporate rapidly, achieving the effect of drying.

 The microwave dryer sends out a high-frequency oscillation signal through the microwave generator, so that the water molecules inside and on the surface of the material absorb microwave energy and generate heat at the same time. As the temperature rises, the water in the material begins to vaporize and evaporate. The evaporated water vapor is discharged by the dehumidification system of the microwave dryer, thereby ensuring that the material can be dried continuously and effectively.

 In summary, the working principle of microwave drying machine is to use the penetrating heating of microwaves to increase the temperature of materials, vaporize and evaporate the water in the materials, and discharge the water vapor through the dehumidification system, so as to achieve the purpose of drying materials. Zhengzhou Dingli is a professional manufacturer of drying machines, integrating R&D, production and sales. The customers are all over the world. If you have any equipment needs, please feel free to contact us by phone!