Product Overview
The CVD-5000 is Yuanxian Machinery's largest standard production freeze dryer, engineered for industrial-scale food processors, agricultural deep-processing facilities, and export-oriented freeze-dried food manufacturers. It delivers 50m² of shelf heating area and processes 500kg of wet material per batch, with a daily throughput of 750-1,000kg (continuous operation).
The machine uses contact shelf heating with a Leybold rotary vane + Roots dual-stage vacuum system. Shelf temperature spans -55°C to +120°C with programmable PID control supporting three-stage freeze drying curves — pre-freeze, primary (sublimation), and secondary (desorption). Ultimate vacuum reaches ≤10Pa (≤5Pa available on the precision specification).
Compared with similar-capacity machines on the market, the CVD-5000 specifies brands for three critical subsystems — the Hanbell RC2 screw compressor, the Leybold pump set, and the LS (ex-LG) control system. The unit is assembled and commissioned at Yuanxian Machinery's own factory with a complete bill of materials.
How Freeze Drying Works
Vacuum freeze drying follows three stages:
| Stage | Temperature Range | Process |
|---|---|---|
| Pre-freeze | Ambient → -30°C | Wet material freezes rapidly in the chamber; water turns to ice crystals, forming a porous structure |
| Primary drying (sublimation) | -30°C → +30°C | Vacuum is drawn to ultimate pressure; ice sublimes directly into vapor, extracted by Leybold Roots pump set and condensed on the cold trap |
| Secondary drying (desorption) | +30°C → +60°C | Remaining bound water is driven off to reach target moisture content (typically <3%) |
The entire process runs in a vacuum, oxygen-free environment. Material does not oxidise, shrink, or deform. Rehydration is near-instant — freeze-dried strawberries recover their texture in 30 seconds, and rehydrated chicken breast retains over 95% of original structure and nutrients.
Specifications
Quick Reference
| Parameter | Value |
|---|---|
| Drying area | 50 m² |
| Batch capacity | 500 kg (wet material) |
| Cycle time | 12-16 h (depends on material) |
| Shelf temperature range | -55°C to +120°C |
| Ultimate vacuum | ≤10 Pa (precision: ≤5 Pa) |
| Cooling capacity | 80.8 kW |
| Total installed power | 171.7 kW |
| Drying chamber dimensions | Φ2400 × 5000 mm (SUS304) |
Full Technical Data
| Parameter | Specification |
|---|---|
| Model | CVD-5000 |
| Drying method | Contact shelf heating (thermal oil circulation) |
| Drying area | 50 m² |
| Shelf material | Hollow aluminium profile (anodised) |
| Door type | Hinged, double-door |
| Chamber material | SUS304 stainless steel (8mm wall) |
| Refrigeration compressor | Hanbell RC2-200B screw (standard) / Hanbell RC2-340 (mushroom) / Bitzer twin screw (precision) |
| Cooling capacity | 80.8 kW (standard) / 71.4 kW (mushroom) / 70 kW (precision) |
| Refrigeration power | 49 kW |
| Condenser type | Evaporative |
| Vacuum pump set | Leybold rotary vane + Roots combination |
| Vacuum pump power | 22.5 kW |
| Defrost method | Evaporative condenser / hot water immersion (optional) |
| Heating power | 90 kW (10-15m³ insulated hot water tank) |
| Control system | LS PLC + touch screen |
| Expansion valve | Danfoss TES55-41(11) |
| Solenoid/ball valve | Danfoss 1-1/8 |
| Pneumatic system | AirTAC |
| Air compressor | Jiebao 4HP |
| Refrigerant | R404A |
| Power supply | 380V / 50Hz / 3P |
| Vacuum piping | Stainless steel + vacuum bellows |
| Equipment weight | approx. 8,000-10,000 kg (config-dependent) |
| Installation area | approx. L8 × W5 × H3 m (incl. ancillaries) |
Configuration Options
| Item | Standard (general/tea) | Mushroom | Precision |
|---|---|---|---|
| Compressor | Hanbell RC2-200B | Hanbell RC2-340 | Bitzer twin screw |
| Cooling capacity | 80.8 kW | 71.4 kW | 70 kW |
| Total power | 171.7 kW | 184 kW | 128.9 kW |
| Ultimate vacuum | ≤10 Pa | ≤10 Pa | ≤5 Pa |
| Tank heating | 90 kW | 85 kW | — |
| Typical product | Tea powder, fruit, general | Mushrooms | Premium-grade food |
Component Sourcing
| Component | Brand / Specification | Origin |
|---|---|---|
| Heating plates | Hollow aluminium, 50m² total | China |
| Drying chamber | SUS304, Φ2400×5000×8mm | Yuanxian built |
| Compressor | Hanbell RC2 screw (Bitzer optional) | Taiwan / Germany |
| Expansion valve | Danfoss TES55 series | Denmark |
| Vacuum pump set | Leybold rotary vane + Roots | Germany |
| Control system | LS (ex-LG) | South Korea |
| Pneumatic components | AirTAC | Taiwan |
| Oil separator | FASKE F-5606 | China |
| Water pump | Yuanli | China |
Applications
| Category | Typical Products | Benefit |
|---|---|---|
| Fruits & vegetables | Strawberries, shiitake mushrooms, dragonfruit, durian | Retains colour, flavour, shape; fast rehydration |
| Tea powder & functional foods | Matcha, fruit powder, probiotics | Preserves bioactive compounds |
| Meat & seafood | Chicken breast, beef, salmon | Rehydrates to near-fresh texture; high protein retention |
| Pet food | Freeze-dried cat food, dog treats, pure meat snacks | Premium pricing with clean-label appeal |
| Herbal medicine | Panax notoginseng, gastrodia, ginseng | Zero active ingredient loss; extended shelf life |
FAQ
Q: How much finished product does one CVD-5000 batch yield?
A: Approximately 50-80 kg of dried product from 500 kg wet feed (90-95% moisture removal, depending on material).
Q: Does cycle time vary significantly by material?
A: Yes. Fruits and vegetables (85-95% moisture) need 14-16 hours. Pre-treated materials like tea powder can finish in 12 hours.
Q: Do I need a separate blast freezer?
A: Recommended for throughput. While the CVD-5000 shelves can pre-freeze, pre-freezing material to -30°C in a blast freezer before loading maximizes machine utilisation.
Q: Can this handle pharmaceutical-grade freeze drying?
A: The precision configuration (Bitzer twin screw, ≤5 Pa) approaches pharmaceutical standards, but strict GMP compliance requires customisation (SIP/CIP systems).
Q: What's the warranty and after-sales support?
A: Standard 12-month full machine warranty. Core components (compressors, vacuum pumps) carry their original manufacturer warranty. See our parts page for details.
Selection Guide
The CVD-5000 fits when:
- Your daily wet-material throughput exceeds 1 ton — strawberry dices, bulk pet food, soup base freeze drying
- You operate a deep-processing facility or export base — shiitake mushrooms, tea powder, herbs
- You run a contract freeze-drying service — need multi-product flexibility with reliable uptime
For batch capacities under 100 kg, consider the CVD-1000 (10m²). Above 100m² (1 ton+ per batch), custom CVD-10000 solutions are available.
Certification
- CE certification (compressors, electrical components)
- SUS304 food-grade stainless steel (drying chamber)
- Original manufacturer certificates (Danfoss, Leybold, Hanbell)
- Material test certificates available on request (MTC)
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