Why a three-pallet machine
For a mid-size processing center handling 10-20 tons per day, the CVF-1500A-3P hits a practical sweet spot — 1500 kg per cycle, ~30-45 minutes per batch, one machine covers 8-12 cycles per shift.
| Parameter | Value |
|---|---|
| Batch capacity | 1500 kg |
| Cycle time | 30 – 45 min (depends on produce) |
| Daily throughput (8h) | ~12 – 18 tons |
| Ideal for | Vegetable processors / cold chain hubs / farm-gate pre-cooling |
How it works
Vacuum cooling relies on a basic physics principle: water boils at lower temperature when pressure drops. Produce placed in the vacuum chamber is drawn down to ≤600 Pa. Surface moisture evaporates rapidly, pulling heat out of the product.
| Stage | State | Duration |
|---|---|---|
| Loading | Ambient (25–30°C) | — |
| Evacuation | Pressure drops to 600 Pa | 5–8 min |
| Evaporative cooling | Moisture evaporation removes heat | 15–25 min |
| Hold | Target 0–10°C | 5–10 min |
Three things no other cooling method can do in one step: surface drying for rain-wet harvest, micro-wound healing that reduces microbial entry, and even temperature distribution with no cold spots.
Technical specifications
Quick specs
| Parameter | Value |
|---|---|
| Chamber volume | 11.24 m³ |
| Batch capacity | 1500 kg (≈3 pallets) |
| Cycle time | 30 – 45 min |
| Final product temp | 0 – 10 °C |
| Ultimate vacuum | ≤ 600 Pa |
| Operating power | 40.5 kW |
| Cooling capacity | 64 kW |
Full specifications
| Component | Specification | Notes |
|---|---|---|
| Compressor | Copeland 15HP × 2 | Dual-compressor, redundant |
| Vacuum pump | DaLutong / Sino-German 7.5 kW | Domestic, readily available parts |
| Condenser | Air-cooled 3 kW | RongYi brand |
| Refrigerant | R22 | Upgradable to R404A/R449A |
| Controller | LS PLC + Weinview HMI | South Korea + Taiwan |
| Pneumatic system | AirTAC | Taiwan-made |
| Temperature sensors | PT100 A-class | Accuracy ±0.15°C |
| Power supply | 380V / 50Hz / 3P | |
| Max operating current | 110.2 A | |
| Overall dimensions | L5380 × W2262 × H2576 mm | Including peripherals |
| Chamber material | Q235 carbon steel + paint | 304 SS upgrade available |
Applications and performance
| Category | Typical load | Target temp | Cycle | Notes |
|---|---|---|---|---|
| Leafy greens (lettuce, spinach) | 800–1000 kg | 25°C→2°C | ~30 min | Weight loss 2–3%; pre-wetting helps |
| Fruit vegetables (broccoli, bell peppers) | 1200–1500 kg | 25°C→5°C | ~35 min | Steady 600Pa, even cooling |
| Mushrooms (shiitake, oyster) | 800–1000 kg | 20°C→2°C | ~25 min | Porous structure cools faster |
| Root vegetables (carrots, potatoes) | 1200–1500 kg | 20°C→4°C | ~40 min | Denser, slightly slower |
| Cut flowers (roses, lilies) | 500–800 kg | 20°C→2°C | ~20 min | Respiration suppression, longer vase life |
Key advantages
| Feature | How it works |
|---|---|
| Dual compressor redundancy | One compressor can run at 50–60% capacity if the other fails |
| Staggered startup | Reduces grid surge by half |
| Washable chamber | Q235 steel interior can be pressure-washed |
| Multi-language HMI | Weinview panel supports English and other languages |
| Refrigerant upgrade path | Current R22; field-upgradable to R404A/R449A |
Configuration options
| Tier | Compressor | Refrigerant | Condenser | Best for |
|---|---|---|---|---|
| Standard (this build) | Copeland 15HP×2 | R22 | Air-cooled | Domestic vegetable processors |
| Upgrade | Copeland 15HP×2 | R404A | Air-cooled | Export or high-standard projects |
| High-efficiency | Bitzer CSH7553 | R404A | Evaporative | Energy-saving, water available |
| Export | Bitzer | R404A/R449A | Air/evaporative | Local voltage & certification |
FAQ
Q: What is the daily throughput of this machine?
Based on an 8-hour shift, 1500 kg per cycle at 30-45 minutes each, expect 12-18 tons per day.
Q: Can it still run if one compressor fails?
Yes. The dual Copeland 15HP configuration allows single-compressor operation at 50-60% capacity.
Q: Do we need a stainless steel chamber?
Q235 carbon steel meets food-grade requirements and can be pressure-washed. 304 stainless is available (+60-80% cost) for export cosmetics or corrosive environments.
Q: How often does the vacuum pump need service?
Standard: oil change every 2000 operating hours. Oil level and filter check daily.
Q: What if R22 refrigerant becomes unavailable?
The system is pre-configured for R404A/R449A upgrade — only the expansion valve and drier need replacement.
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