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Vacuum lyophilizer equipment
The heat of items is supplied by the heating plate with heat transmission or radiation, to ensure that the water in the item is directly sublimated from ice to vapor standing. The continually sublimated vapor is compressed and recorded to the U-shaped coil up until the heating and also vacuumizing are quit according to the freeze-drying curve to fulfill the specified requirements. After 15 ~ 24 hrs, the products are dried, and the water is transferred to vapor condenser of the vacuum lyophilizer equipment.
The vacuum lyophilizer equipment is generally composed of vacuum freeze-drying chamber, vacuum system, refrigeration system, heating system and also control system. The standard technological process taken on by vacuum lyophilizer equipment is: pretreating → freezing → vacuum drying → packaging → finished item.
The working concept of the vacuum lyophilizer equipment: to start with, freeze the raw product below the eutectic factor temperature to make the water in the items in o solid ice, and afterwards load the pre-treated products in o drying chamber of the vacuum lyophilizer equipment under low temperature vacuum state.