The type and function of the control system of the floor type Freeze Dryer are different. For the freeze-drying machine of the experimental series, it is mainly used for the lyophilization process of materials and a small amount of trial production. Therefore, the control system of the floor type Freeze Dryer should display the parameters of the freeze-drying process in real time and record automatically; set, modify and effectively execute the freeze-drying process program; and have a communication interface for data collection and storage.
　　floor type Freeze Dryer is suitable for drying high-grade raw materials, Chinese herbal medicines, biological, wild vegetables, dehydrated vegetables, food, fruits, chemicals, pharmaceutical intermediates and other materials. The floor-type freeze-drying machine heat-conducting oil heating system and the dehumidification system are integrated into one, and a new type of box structure is introduced, which utilizes the storage of the material space in the box for drying and vacuum drying.
　　Floor-standing freeze dryers are processes that remove moisture or other solvents from frozen biological products by sublimation. Sublimation refers to the process of solvents, such as water, like dry ice, which does not pass through a liquid state and changes from a solid to a gaseous state. The product obtained by freeze drying is referred to as a lyophilizer, and the process is referred to as lyophilization. Traditional drying can cause the material to shrink and damage the cells. The structure of the sample is not destroyed during the freeze drying process because the solid component is supported by the firm ice at its location. When the ice sublimes, the floor-type freeze-drying opportunity leaves the pores in the dry remaining material. This preserves the biological and chemical structure of the product and the integrity of its activity. There are many different uses for lyophilization in the laboratory, and floor-standing freeze dryers are indispensable in many biochemical and pharmaceutical applications. Floor-standing freeze dryers are used to obtain biomaterials that can be preserved for long periods of time, such as microbial cultures, enzymes, blood, and pharmaceuticals, retaining their inherent biological activity and structure in addition to long-term storage stability. To this end, lyophilization is used to prepare tissue samples for structural studies (eg, electron microscopy studies). Floor-standing freeze dryers are also used in chemical analysis to obtain dried samples or to concentrate samples to increase analytical sensitivity. Freeze-drying stabilizes the sample composition without changing the chemical composition, which is an ideal analytical aid. Freeze drying can occur naturally. In the natural case, this process is slow and unpredictable. Through the freeze-drying system, people have improved and subdivided many steps to speed up the process.

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