A vegetable freeze dryer is also called a vegetable vacuum freeze dryer. Using the working principle of a vegetable freeze-drying machine, vegetables are processed into freeze-dried products through vacuum freeze-drying technology, which has the ability to preserve the original color, body shape, and nutritional components of vegetables, good rehydration, and can be stored at room temperature for a long time. The working principle and structure of the vegetable freeze dryer are introduced here.
The working principle of the vegetable freeze dryer is to use the principle of sublimation, according to the principle of mutual conversion and coexistence of the three-phase states of water "liquid, solid and gaseous" at different temperatures and vacuum states. Through the refrigeration system of the vegetable freeze dryer, the vegetables containing water are frozen into a solid-state at a low temperature, and then the drying chamber is formed into a vacuum environment through the vacuum pump system of the freeze dryer, and the solid ice is directly sublimated by drying in a high vacuum state.
It is necessary to remove the remaining 10% of the bound water into the gas, and then enter the analytical drying to remove the remaining 10% of the bound water. Because the molecular force of the bound water is relatively strong, the vegetable freeze-drying machine will provide more heat to sublime and remove the bound water. 2~5% vegetable freeze-dried food. The working principle of the vegetable freeze dryer is to use the principle of sublimation to remove water through three working stages to obtain freeze-dried vegetables with very little water.
Kassel Machinery (Zhejiang) Co., Ltd. Freeze dryer Fruit and vegetable freeze dryer
The vegetable freeze-drying machine consists of a freeze-drying box and a unit structure. It is mainly composed of compressors, vacuum pumps, circulating pumps, and PLC electronic control modules. The refrigeration system, vacuum system, circulation system, and electronic control system are controlled by PLC electronic control. Each system operates. At present, the vegetable freeze-drying machine has been widely used in the freeze-drying processing of vegetables such as lettuce, tomato, broccoli, pepper, green onion, parsley, chives, cauliflower, onion, beans, spinach, edible fungi, yam, carrot, etc. opportunity!
