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Your Location: Home >> Application >> User case >> The maintenance of industrial vacuum freeze dryer cannot be ignored

The maintenance of industrial vacuum freeze dryer cannot be ignored

Release Date: Wednesday 5 . 2020
Browse: 141

  Industrial vacuum freeze dryer is composed of refrigeration system, vacuum system, heating system, electrical instrument control system. The main components are drying oven, condenser, freezing unit, vacuum pump, heating / cooling device, etc. The working principle is to freeze the dried items to below the triple point temperature, and then to directly sublimate the solid moisture (ice) in the items into water vapor under vacuum conditions, and remove them from the items to dry the items. After pre-processing, the materials are sent to the quick-freezing warehouse for freezing, and then sent to the drying warehouse for sublimation and dehydration, and then packed in the post-processing workshop. The vacuum system establishes a low-pressure condition for the sublimation drying bin, the heating system provides the latent heat of sublimation to the materials, and the refrigeration system provides the required cooling capacity to the cold trap and drying chamber. Industrial vacuum freeze dryer uses radiant heating, materials are heated uniformly; adopts water trapping trap, and can realize rapid defrosting; adopts vacuum unit, and can realize oil-water separation; adopts parallel centralized refrigeration system, multi-channel cooling on demand, working conditions Stable, beneficial to energy saving; adopting artificial intelligence control, high control precision and easy operation.
  Industrial vacuum freeze dryer has excellent performance, which can make the water in the food directly sublimate and dry from the solid state under the condition of slurry and vacuum, without the evaporation of the liquid state. It can preserve the original color, fragrance, taste and shape of the food to a greater extent. The original nutrients and active substances are rarely damaged, and the rehydration is rapid, without the need for preservatives. Products are popular in the market, mainly including quick-freezing warehouses for freezing materials, drying chambers for sublimation and dehydration, and auxiliary systems such as refrigeration, vacuum, and heating.
  Maintenance of industrial vacuum freeze dryer:
  1. Before working, pay attention to remove the moisture in the cold trap room. Dry the cold trap if necessary. It is recommended to open the drain valve before each freeze-drying work, and then close it.
  2. Do not switch frequently during use. If the refrigerator is stopped due to an operation error, it cannot be started immediately. Wait at least 20 minutes before starting again to avoid damage to the refrigerator.
  3. After freeze-drying each time, after the ice on the cold trap coil turns into water, clean it with a towel and freeze-drying. After turning on the "inflation valve" to inflate the cold trap, be sure to slow it down so as not to damage the vacuum gauge.
  4. Periodically check the liquefier at the bottom of the machine for dust and dirt. If necessary, clean the industrial vacuum freeze dryer.

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