Principle of Qingyang pineapple powder freeze-drying machine

Three-state changes of water. The basic principle of freeze-drying machine is based on the three-state change of water, using compressed air to suck out the gas in the mixture, and then cooling the mixture to the absolute temperature below the dew point to separate the solid. Freeze-dryer, also known as freeze-drying dryer, is a kind of drying equipment that freezes and crystallizes food raw materials at low temperature, and then sublimes the water in frozen food raw materials from solid ice to steam by using sublimation principle without melting ice, thus realizing freeze-drying.