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vacuum freeze dryer case
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How can a freeze dryer "change the fate" of food and life?
The freeze-drying machine seals fresh life and perishable food outside of time and space for a long time, creating an instant revival and delicious taste on the tongue, silently changing food, medicine, and even the future. 1、 The core of freeze-drying is gentle freezing and vacuum The freeze-drying technology of freeze-drying machine is different from the simple and rough traditional high-temperature drying. The charm of freeze-drying lies in its gentle and precise three steps: 1. Pre freezing: Press the "pause button" for the material Place materials (liquids, solids, or slurries) containing moisture in extremely cold environments at -40 ° C or even lower, and quickly freeze the internal moisture into solid ice crystals. This is like pressing a precise pause button on biological molecules - the structure is fixed and the activity is well preserved.
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Pet food freeze dryer preserves food through low-temperature freezing and vacuum dehydration. FD freeze drying can retain more than 95% of the nutrients in the ingredients, maintaining their original shape, color, and flavor. Traditional high-temperature drying or air drying can cause the materials to shrink and dry. Pet food freeze dryer (pet freeze dryer) uses low-temperature freezing and vacuum drying technology to directly remove the moisture in pet food (cat food, dog food, pet snacks, etc.) from solid ice to gaseous state, ultimately obtaining freeze-dried pet food with a moisture content of<5%.
The reasons for the leakage rate of the vacuum freeze dryer.
There are two indicators that can measure the sealing performance of a container in a vacuum freeze dryer: "rise rate" and "leakage rate". The pressure rise rate refers to the pressure change of a "vacuum" container over a certain period of time. The unit is usually mbar/s or mTorr/min. The calculation formula is as follows:
Key equipment for the preparation of freeze dryer
The freeze dryer is the core equipment for the preparation of functional materials, and the freeze dryer integrates a number of technologies such as low-temperature freezing, vacuum drying and precision control, which provides technical support for the development of new materials.
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