Freeze Drying Equipment for Sale

KFD Series Food Vacuum Equipment
Features:
1. The pre-freezing chamber and the freeze-drying chamber are separate structures, they work at the same time, which improves the freeze-drying efficiency and shortens the freeze-drying time.
2. The Shelf made of aerospace grade aluminum alloy is used for double-sided radiation heating, and the radiation rate is more than 90% to ensure good temperature uniformity..
3. High efficiency mixed refrigerant medium: low freezing point and high boiling point to ensure high heat transfer efficiency and long service life.
4. The drying curve optimization control algorithm can control the heating rate and vacuum degree value of products in the drying stage.
5. The patented gas diversion technology ensures that the Condenser has strong ice catching ability and high drying efficiency.
6. Flexible manual and automatic control mode, manual mode is used for testing production process, automatic mode is used for mass production.
7. Accurate sensor calibration function ensures the accuracy of process parameters for long-term use.
8. The user’s level and password can be set for decentralized operation management.
9. Can be customized according to user needs.

Compared with the usual drying methods such as sun drying, oven drying, spray drying etc., the freeze drying has the following advantages:
1. Proteins don't denature，Microorganisms maintain their biological activity.
2. Almost no loss of volatile substances, heat-denatured nutrients and aroma components in the product.
3. The growth of microorganisms and the action of enzymes can hardly be carried out and the product can best maintain its original properties.
4. After freeze-drying, the volume and shape of the product are almost unchanged, and the rehydration is good.
5. Freeze-dried under vacuum with very little oxygen, so that easily oxidized material is protected.
6. Freeze drying can remove95-99.5% of the moisture in the material, and the storage period of the product is longer.

Technical parameters

Application

Analysis of freeze-drying process for freeze drying equipment for sale
The freeze-drying bath of the freeze dryer involves processes such as freezing, heating, and gasification, which includes various processes such as heat transfer and mass transfer. From the perspective of heat transfer, freezing and heating are mutually reversible processes, and increasing the driving force (temperature difference) or reducing the thermal resistance is beneficial to the heat transfer process of the freeze dryer. In industrial production, reducing thermal resistance is often used to strengthen the heat transfer process. The resistance of heat transfer mainly comes from the inside and outside of the material. For example, reducing the thickness of the material layer and increasing the thermal conductivity can improve the freeze-drying rate of the freeze dryer. From the perspective of mass transfer, the moisture is sublimated from the solid phase to the gas phase and then separated. The removal process includes: the diffusion process of the gas phase from the inside of the material to the surface, the process of the gas phase migration from the material surface to the surface of the condenser, solidification and removal process, increasing the mass transfer driving force and reducing the mass transfer resistance can improve the freeze-drying rate of the freeze dryer.
Freeze dryers play a pivotal role in our country's metal heat treatment and heating work, which has also spawned the development of freeze drying equipment for sale. Brand power and word of mouth have always been the best help in the development of various industries. This also applies to the freeze dryer industry. We firmly believe that strict management, quality assurance, and high-quality services can only achieve good market returns. Therefore, we are committed to doing every service link for every customer, using a complete system to implement after-sales service. The competition of technology, performance and quality, and the quality of processing technology determine the quality of products. Therefore, we continuously improve the processing technology and improve the production performance of the cold dryer in the development.