1. Product Overview
Our Variable-Temperature Pressure-Difference Puffing Machine, also known as Vacuum Differential Pressure Puffing Equipment or Explosion Puffing Drying Machine, is a cutting-edge non-oil, low-temperature puffing solution designed for the food processing industry. It combines the advantages of hot air drying and vacuum freeze drying, enabling efficient puffing and dehydration for fruits, vegetables, grains, and herbal materials while preserving maximum nutrition, natural color, and original flavor. Widely used to produce healthy crispy snacks, nutritional powders, instant drinks, and functional food ingredients, it is the ideal alternative to vacuum frying and deep-frying equipment.
2. Working Principle
The machine operates on the Instant Controlled Pressure Drop (DIC) principle, leveraging thermomechanical effects from rapid pressure changes:
- Load preprocessed raw materials (moisture content 15%-25%) into the puffing tank.
- Seal and heat the tank to 85-95°C under controlled pressure (0.2-0.4 MPa) to balance internal and external material temperature.
- Instantly connect the puffing tank to a larger vacuum tank (5-10× volume) for rapid pressure release (≤10 kPa vacuum).
- Internal water flashes into steam, causing material expansion and forming a uniform porous structure.
- Maintain vacuum for dehydration to achieve crispy texture and low moisture (≤5%).
3. Key Features
- 100% Non-Oil & Healthy Puffing: No oil or additives, avoiding high oil content and short shelf life issues of fried products; retains protein, vitamins, and minerals.
- Precision Temperature & Pressure Control: PID-controlled temperature (±1°C accuracy) and pressure differential (0.2-0.4 MPa); supports 50+ pre-set recipes for different materials.
- High Efficiency & Energy Saving: 30% faster drying than vacuum frying; low-temperature processing (≤95°C) reduces energy consumption and nutrient loss.
- Food-Grade Stainless Steel Build: SUS304 stainless steel for all contact parts, complying with FDA and CE standards; corrosion-resistant, easy to clean, and durable.
- Fully Automated Operation: PLC + 7-inch touch screen control with real-time monitoring; one-click start, automatic pressure holding, and shutdown; reduces labor costs.
- Wide Material Compatibility: Processes apples, bananas, strawberries, carrots, sweet potatoes, mushrooms, grains, and herbs; ideal for diverse snack production.
- Superior Product Quality: Preserves natural color, aroma, and taste; uniform porosity, crispy texture, and long shelf life (6-12 months) without preservatives.
4. Technical Specifications
| Parameter | Value |
|---|---|
| Model | Customized (100-500 kg/h) |
| Puffing Tank Volume | 0.5-5 m³ |
| Vacuum Tank Volume | 2.5-25 m³ (5× puffing tank) |
| Temperature Range | 60-120°C (adjustable) |
| Pressure Differential | 0.2-0.4 MPa |
| Ultimate Vacuum | ≤10 kPa |
| Heating Power | 15-60 kW |
| Vacuum Pump Power | 5-15 kW |
| Material | SUS304 Stainless Steel |
| Control System | PLC + Touch Screen |
| Dimension (L×W×H) | Customized |
| Weight | 500-3000 kg |
5. Applications
- Fruit & Vegetable Snacks: Apple chips, banana chips, strawberry crisps, carrot chips, sweet potato chips, mushroom crisps.
- Grain & Nut Products: Puffed rice, corn flakes, soybean crisps, peanut puffs.
- Herbal & Functional Foods: Ginseng slices, wolfberry crisps, chrysanthemum puffs, nutritional powders.
- Pet Food: Natural meat crisps, vegetable puffs for pets.
6. Why Choose Our Machine?
- Professional Manufacturer: 10+ years of food machinery R&D and production experience; exported to 30+ countries.
- Customization Service: Tailor-made solutions for capacity, material, and factory layout requirements.
- Quality Assurance: 12-month warranty, lifelong maintenance, and spare parts supply.
- Technical Support: Free installation, training, and 24/7 online technical assistance.
7. Contact Us
For detailed quotes, catalogs, or customization requirements, feel free to contact us. We are committed to providing you with the best puffing solutions!