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E-mail
shu@sedpharma.com
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15336513721
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Room 602, 6th Floor, Building 1, No. 2630 Yuhangtang Road (Jingcheng Electric Power Technology Park), Yuhang District, Hangzhou City
Hangzhou Shengde Machinery Co., Ltd
Structure and advantages of vacuum freeze dryer
Date: 2024-10-30Read: 8
Vacuum freeze dryer, also known as low-temperature dryer, is a device that directly sublimates aqueous substances in solid state under low-temperature vacuum conditions. It is widely used in the drying and purification processes of industries such as food, pharmaceuticals, chemicals, and biotechnology.
Below we will introduce the basic structure of a vacuum freeze dryer:
1. Freezing system: The freezing system consists of a compressor, condenser, expansion valve, and refrigerant. Responsible for converting water containing substances into solid ice crystals.
2. Drying chamber: The drying chamber is composed of a grain silo, a central pipe, and isolation plates between adjacent plates. The surface of the container is sealed with a retractable sealing gasket. Responsible for sublimating the moisture in the solid state at low temperatures.
3. Vacuum pumping system: responsible for removing all gases from the drying chamber.
4. Heating system: responsible for providing appropriate heating energy in a vacuum environment, removing all moisture from the drying chamber, and completing the drying process.
5. Control system: The control system controls various processes such as freezing, heating, and vacuuming through program settings, and can observe parameters such as temperature and vacuum degree in the drying chamber.
Compared with traditional hot air drying, vacuum freeze-drying has the following advantages:
1. Maintaining the original nutritional content: Throughout the entire process, the substance remained largely unchanged and unchanged, preserving its original quality and nutritional value.
2. Time saving, energy-saving and environmentally friendly: The freeze-drying method does not have the process of hot air drying, which can generate residual heat, and belongs to the "cold force drying" process. Therefore, it is energy-saving and environmentally friendly, and can effectively reduce production costs.
3. High quality drying: The drying temperature is low, and the material prototype is preserved without deformation or discoloration, resulting in superior quality.
4. Wide applicability: The application scope includes various industries such as biological products, chemicals, pharmaceuticals, new materials, and health products.
5. Long shelf life: The dried material dries more thoroughly than traditional drying methods and is less susceptible to changes caused by factors such as humidity and oxygen, resulting in a longer shelf life.
