freeze dryer for food
Descriptions of freeze dryer for food:
The freeze drying technology is the most advanced food dehydration processing technology at present. The freeze-dried food processed by this technology has long expiration date, good reconstitution property, color, aroma, taste and nutrition. The volume and shape of the food is essentially constant, showing a spongy state without drying shrinkage phenomenon. It can be used in vegetables, fruits, condiments, aquatic products, biological products, medicines, beverages, specimens, and other fields.
Main features of freeze dryer for food:
1.The vacuum system uses gland pump and oil sealed pump compound mode. At first, the high power oil sealed pump quickly drainages the air. Then the vacuum low power gland pump works to pump the water vapor and reduce energy consumption. Otherwise, the poor drainage performance of oil sealed pump will make the water vapor concentrated to lead to pump oil emulsification metamorphism, which will further destabilize the vacuum stability of the system.
2.Closed circulating water system uses three way control valve to automatically regulate the heating amount of water cycle system and precisely control the temperature of heating plate. What’s more, nitrogen automatic pressure control device can keep the operating temperature of the hot water at 120℃.
3.Post and side type water filling cryofocus has short access, small resistance, fluent water vapor channel, uniform water filling effect, and high water filling efficiency. The water filling cryofocus adopts ammonia single-phase circulation cooling way, with good cooling liquid supply stability and easy operation.
Advantages of freeze dryer for food:
1. Efficiency of Heating plates
The material of heating plates are aviation aluminum with anodized on the surface, over 100% heat release to the product by radiation way, keep good heating uniformity everywhere.
2. Alternate Vapor trap
Double vapor trap located under the heating plates inside drying chamber, Just trap 1 condensates water vapor until it can't catch vapor any more, then trap 2 starts condensation function, and trap 1 will begin to be defrost ice for another condensation cycle.
3. Continous De-icing
When the trap 2 begins to catch water vapor, the trap 1 begins to be defrost ice on the tube bundle during product drying, after de-icing, the empty and smooth tubes for another condensation cycle.
4. Automatic control system
Advanced intelligent control system keeps whole system stable and reliable running for a long term, furthermore, Simple operation method can be much easier to master.
Applied Range of freeze dryer for food:
It can be applied to the manufacturing technique of freeze-dried coffee, fish, seafood, bovine coloctrum, vegetables, health care products, fruits, medicines, and powder materials.
Functions:
This type freeze dryer conforms to sanitary requirement. It can maintain biological activity, color, flavor and aroma, decrease the loss of volatile substance and thermosensitive substance, and keep the original properties to the largest extent. The products it dried have good reconstitution properties, oxidation resistance, and long storage life, and their volume and shape remain the same.