Vacuum freeze dry equipment
The heat of products is supplied by the heating plate with warm conduction or radiation, to make sure that the water in the item is straight sublimated from ice to vapor status. The continuously sublimated vapor is compressed and also caught to the U-shaped coil up until the heating and vacuumizing are quit according to the freeze-drying curve to meet the specific requirements. After 15 ~ 24 hrs, the products are dried, and also the water is transferred to vapor condenser of the vacuum freeze dry equipment.
The vacuum freeze dry equipment is mostly composed of vacuum freeze-drying chamber, vacuum system, refrigeration system, furnace and also control system. The standard technological process taken on by vacuum freeze dry equipment is: pretreating → cold → vacuum drying → packaging → ended up item.
The working principle of the vacuum freeze dry equipment: first of all, freeze the raw product listed below the eutectic point temperature to make the water in the products into solid ice, and afterwards pack the pre-treated products right into drying chamber of the vacuum freeze dry equipment under low temperature level vacuum state.
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