14
2020
-
08
Analysis of the technical principles and advantages of freeze dryers
Freeze-drying is a relatively advanced method for dehydrating materials. This technology involves freezing the water-containing material at low temperatures, then sublimating the water directly under vacuum, and condensing the sublimated water vapor using a condensation method to achieve the purpose of material dehydration and drying.
Freeze-drying is a relatively advanced method for dehydrating materials. This technology involves freezing the water-containing material at low temperatures, then allowing the water to sublimate directly under vacuum, and using condensation to condense the sublimated water vapor, achieving the purpose of material dehydration and drying.
The physical, chemical, and biological states of the material after freeze-drying remain essentially unchanged. The loss of volatile components and heat-sensitive nutrients in the material is minimal. The freeze-dried material is porous, and its volume is basically the same as before drying. Therefore, after adding water, due to the large contact area, it can be quickly restored and has a longer shelf life in a sealed container.
A freeze dryer is a machine that uses the above technology. Let's take a look at its working principle:
Compressed air first enters the pre-cooler for preliminary cooling, then flows into the heat exchanger, where it exchanges heat with the refluxed finished gas to further cool the compressed air and discharge the condensed water outside the machine. Afterwards, the compressed air flows into the evaporator, where it exchanges heat with the refrigerant to further cool the compressed air and reach the required dew point temperature.
So, what are the specific advantages of a freeze dryer? Let's take a look:
1. Uses a brand-new imported compressor, stable operation, long service life, energy-saving and power-saving.
2. The unit adopts a uniquely designed bedroom design, simple structure, easy maintenance, and stable processing effect.
3. The unit control system uses a high-quality controller, quick response, real-time display of operating parameters, simple operation, and quick maintenance.
4. The whole machine adopts multiple protection devices, including refrigerant high and low pressure protectors, exhaust overheating protectors, compressor motor overheating protectors, overload current protectors, antifreeze temperature protectors, water flow protectors, temperature-sensitive fusible plugs, etc., to ensure the normal operation of the equipment and give users peace of mind.
5. Drying is carried out at low temperatures, so it is particularly suitable for many heat-sensitive substances, such as proteins and microorganisms, which will not denature or lose their biological activity, therefore it is widely used in medicine.
6. When drying at low temperatures, the loss of some volatile components in the material is very small, suitable for drying some chemical products, medicines, and foods.
7. During the process, the growth of microorganisms and the action of enzymes cannot proceed, so the original properties can be maintained.
8. Since drying is carried out in a frozen state, the volume remains almost unchanged, maintaining the original structure and preventing concentration.
Previous Page
Next Page
Previous Page
Next Page
The company has a stable team of high-quality talents, professional design and development team, modern technical equipment, advanced production technology, perfect testing equipment. Technical transformation and innovation can be carried out according to the special requirements of customers in order to meet the development needs of the market.
Contact Us
Company Phone:0571-64533786
Electronic E-mail:libin1357@126.com
Company Fax:0571-64533777
Company headquarters: jiande city daci rock town industrial functional area
Mobile browsing