IQF Freezer Machine Individual Quick Freezing Machine

In a fried food processing line (such as chicken nuggets, tempura shrimp, fish sticks, French fries, onion rings, or plant-based snacks), the IQF Freezer is the final stage after frying, air cooling, and sometimes flavoring. Its main function is to quickly freeze fried products individually so they can be stored, packaged, and transported without losing texture, taste, or nutritional quality.

The IQF Freezer Machine (Individual Quick Freezing) is a specialized freezing system designed to rapidly freeze individual food pieces at ultra-low temperatures. Unlike traditional freezing methods, which form large ice crystals and cause clumping, IQF technology ensures that each piece of food remains separate, preserving its natural taste, texture, nutrition, and appearance. It is widely used in meat, poultry, seafood, fruit, vegetable, and bakery processing industries.

Pre-cooling stage: 20P Piston compressor
Freezing stage: 90P Compressor

The temperature of the fried products after frying and cooling line is about 70-85℃. Then it needs to pre-cool the product to room temperature before freezing. Therefore, we design the pre-cooling stage+freezing stage.

• The total length of the freezer is 12m, and the pre-cooling stage length is 4m.
• High-strength mesh belts and SUS304 food-grade stainless steel conveyor belts are made of imported special equipment.
• Assembled internal structure (different from welded structure), easy to maintain and maintain.
• Reliable transmission control made of all stainless steel materials, advanced technology of the European BBY company.
• Symmetrical and smooth annular air duct design inside the equipment, with no cold air escaping from the inlet and outlet.
• High-efficiency evaporator, super-large fins with air turbulence structure, produced by the latest stamping process.
• Equipped with a European standard waterproof stainless steel control cabinet.

• Chicken Products: nuggets, tenders, schnitzels, wings
• Seafood Snacks: breaded shrimp, calamari rings, fish fingers
• Vegetable Snacks: onion rings, potato fries, tempuras
• Potato Products: French fries, hash browns, wedges
• Plant-Based Foods: soy nuggets, vegan patties, meat alternatives

• Preserves natural flavor, color, and nutrition
• Prevents clumping for easy storage and packaging
• Extends product shelf life for global distribution
• Compatible with meat frying and coating lines
• High production efficiency with minimal labor requirements

• Fast Freezing Technology: Rapid freezing to maintain food quality and extend shelf life.
• Individual Separation: Ensures products like meat slices, shrimp, or berries do not stick together.
• Stainless Steel Construction: Hygienic, durable, and compliant with food safety standards.
• Energy Efficiency: Optimized airflow and insulation reduce energy consumption.
• Flexible Belt System: Adjustable belt speed and thickness for different products.
• Easy Cleaning & Maintenance: Designed with smooth surfaces, drainage, and CIP (Clean-In-Place) options.
• Continuous Production: Ideal for high-capacity, industrial-scale food processing lines.

The IQF freezer uses intense cold air circulation and high-velocity airflow to freeze products within minutes. Food items are spread evenly on a stainless-steel conveyor belt, where they are exposed to sub-zero temperatures ranging from -35°C to -45°C. Rapid freezing prevents cell wall damage, minimizes drip loss, and locks in product freshness.

The insulation parts are Polyurethane boards. And the Polyurethane density is≥ 41kg/㎥, with internal wooden support and cylindrical fixing rings, and a stainless steel plate sprayed with adhesive, ensuring no bulging. The outside and inside walls are stainless steel plates.

The conveyor belt is made of SUS304 stainless steel, with a strength that meets the American “Ashworth” strength standard. The core rod is Φ 10, the chain piece is δ=3, and the frozen product can be directly placed on the conveyor belt for freezing.

The fin of the pre-cooling stage is 200㎡, and that of the freezing part is 700㎡. The fin hole diameter is 19mm, and the thickness is 0.25mm.

The air cooling fan in the pre-cooling stage is 3 sets (Power 1.1KW). The air cooling fan in the freezing stage is 4 sets (Power 1.5KW).

The main electrical control components are produced by Chint Electric Company, and the temperature digital display is in the warehouse.
The mesh belt is controlled by a variable frequency power supply, and the speed of the mesh belt is adjusted to achieve variable speed.

Workflow in a Typical Fried Food Line

1. Predusting / Battering / Breading → products are coated for texture and flavor.
2. Frying Machine → products are cooked until golden brown.
3. Air Cooling Machine → removes surface oil and cools products slightly.
4. IQF Freezer Machine → rapidly freezes fried products at -35°C to -45°C, locking in freshness.
5. Packaging Machine → frozen products are bagged or boxed for distribution.