Microwaves are electromagnetic waves at a frequency of 300 MHz to 300GHZ. The material in the heating medium in the molecules of water is a polar molecule. It in the rapidly changing under high frequency magnetic field, its polarity orientation will be with the change of external electric field changes, resulting in molecular motion and friction between the effect, this field of the microwave field can transformed into thermal energy within the medium, the temperature of the material increased, heating and puffing a series of physical and chemical processes, so as to achieve the purpose of microwave heating and drying.
Microwave vacuum drying equipment is mainly used for dehydration, drying and sterilization of high value-added and heat sensitive agricultural and sideline products, health products, food, medicine, fruits and vegetables, chemical raw materials, etc.; used for low temperature concentration of chemical products and removal of crystal water , drying of enzyme preparations, etc; vacuum extraction of Chinese herbal medicine; suitable for laboratories in research institutions.