CVD-1000 Production Vacuum Freeze Dryer — 10 m² Shelves · 100 kg/Batch

CVD-1000 is Yuanxian’s production-type vacuum freeze dryer for small and medium-sized production lines, with an effective shelf area of 10 m², a single-batch load of about 100 kg of fresh material, a shelf temperature range of -55~+120℃, a cold trap operating temperature of -45~-65℃, and a batch cycle from pre-freezing to discharge of about 12~25 hours. The material is first frozen into ice, then under vacuum the ice sublimates directly into water vapor, which is captured and condensed by the cold trap. No liquid water is involved throughout the process, so the shape, color and flavor of the raw material are preserved. It is an entry-level production model in Yuanxian’s vacuum freeze dryer series.

Where it is used

How drying works

The whole process is completed in an oxygen-free vacuum environment, so the material does not oxidize or shrink. The rehydration rate of freeze-dried fruit and vegetable crisps can reach 8595%, and the shelf life under sealed room-temperature conditions is 25 years.

Technical parameters

Quick specifications

Full parameters

Main configuration list

Why choose it

1. Low-temperature sublimation, shape and color retained. Moisture sublimates directly in the form of ice crystals, so the material skeleton does not collapse or shrink, and after rehydration it can approach the fresh state.
2. Production capacity, continuous discharge. 10 m² of shelves and a single-batch load of about 100 kg, together with trays and material carts, can connect pre-processing and packaging into a continuous production line.
3. Fully automatic freeze-drying curve control. PLC plus touch screen, with pre-freezing, primary drying and secondary drying set in stages, multi-channel real-time temperature recording, and data export supported.
4. Stable combined vacuum maintenance. With the two-stage configuration of Roots pump plus rotary vane pump, the vacuum level is maintained within 15 Pa while output remains stable, and the cold trap captures water vapor simultaneously to protect the vacuum unit.

FAQ

How much freeze-dried finished product can CVD-1000 produce per batch?

Taking fruits and vegetables with a moisture content of about 90% as an example, 100 kg of fresh material generally yields 510 kg of finished product after freeze-drying, with 9095% of the moisture removed. The specific output depends on the initial moisture content of the raw material, slice thickness and the required final moisture content.

Why does the freeze-drying cycle vary so much?

The cycle is determined jointly by the moisture content of the material, slice thickness and loading density. Fruits and meats with high moisture content require longer times; the thicker the slices and the denser the loading, the longer the sublimation drying stage. When the same equipment processes different materials, a cycle ranging from 12 hours to 25 hours is normal.

Does it need a separate quick-freezing unit?

Pre-freezing can be completed directly on the shelves inside the chamber, or the material can first be frozen in an external quick-freezing warehouse to below the eutectic point before being loaded into the chamber; the latter can improve equipment turnover. Whether to add it is determined according to the production line rhythm.

Why does the vacuum system use a Roots pump plus a rotary vane pump?

Freeze-drying requires ice to sublimate under vacuum, and the target vacuum level must be stably maintained within 15 Pa. The rotary vane pump is responsible for pumping from atmospheric pressure to rough vacuum, and the Roots pump relays boosting in the low-pressure region. Only the two-stage combination can maintain the vacuum level stably.

What are the requirements for installed power and power distribution?

CVD-1000 has an installed power of 28 kW and uses a 380V / 50Hz three-phase power supply. The actual incoming line capacity needs to be calculated according to the starting current of the refrigeration unit and on-site power distribution conditions, and the specific details are subject to the technical proposal.

To calculate loading capacity, freeze-drying curves and vacuum configuration for your materials, you are welcome to contact us, or first visit the technical library to view freeze-drying process materials.