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Freezing: The food is rapidly frozen under low temperature conditions, causing the water inside to form ice crystals.
Reduced pressure: The frozen food is placed in a vacuum chamber, and the surrounding pressure is reduced, causing the ice crystals to convert into water vapor at a lower temperature.
Water removal: The water vapor is drawn out by a vacuum pump, causing the water inside the food to change directly from a solid to a gas state, thus avoiding the loss of nutrients caused by water.
Solidification: After pressure reduction and water removal, the water inside the food has been completely removed, resulting in a dry state.
Vacuum freeze drying technology, also known as sublimation drying, is a method to pre-freeze water-containing material and sublimate its moisture under vacuum. The original biological and chemical properties of freeze-dried items are basically unchanged, which is easy to keep for a long time. After adding water, they can be restored to the state before freeze-drying and maintain their original biochemical properties. Therefore, vacuum freeze drying technology is widely used in food, chemical, biological products and other fields.
Product Parameters
| Product Model | KWD-HFD-1 | KWD-HFD-4 | KWD-HFD-6 |
| Freeze-dried Area | 0.1 | 0.4 | 0.6 |
| Cold Trap Coil Temperature | <-40℃ (no-load) | ||
| Ultimate Vacuum | 15pa (no-load) | ||
| Power Supply | 220V 50HZ | ||
| Power | 750W | 1100W | 2300W |
| Handling Capacity | 1-2KG / batch | 4-6KG / batch | 6-8kg / batch |
| Layer Spacing | 45mm | 45mm | 50mm |
| Weight | 50KG | 80KG | 120KG |
| Material Tray Size | 140mm x 278mm three layers | 200mm x 450mm four layers | 300mm x 400mm four layers |
| Dimension | 400mm x 550mm x700mm | 510mm x 700mm 850mm | 700mm x 800mm x 1300mm |
| Integrated structure, small size, easy to use, no leakage |
| Materials in contact with the product meet food grade requirements |
| The cold trap is made of stainless steel, which is anti-corrosion and easy to clean |
| With sample pre-freezing function |
| The cold trap captures ice evenly; strong ice capture ability |
| International famous brand compressor, which are high efficiency, energy saving, long service life, low noise. |
| Well-known brand vacuum pump, which are high pumping speed and higher ultimate vacuum. |
| Intelligently record and export data |
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