Tunnel Belt Freezer

The Tunnel Belt Freezer from Lynxcool is designed to meet the stringent requirements of modern food processing operations. Engineered for rapid freezing and high throughput, it ensures product quality, energy efficiency, and operational reliability. This equipment supports a wide range of frozen products, from seafood and bakery items to coated foods and ready-to-eat meals, providing consistent, high-quality output for industrial-scale operations.

Key Functional Advantages

The Tunnel Belt Freezer employs a straight-through conveyor system, eliminating the helical paths of spiral freezers. This design minimizes lateral belt tension, protecting product integrity and supporting precise, single-layer placement. The combination of high-speed airflow and multi-zone temperature control ensures rapid surface crust formation while maintaining the desired core temperature.

Advantages include:

· Straight-through conveyor: Optimal for flat, thin, or tray-loaded products.

· Wide belt options: Adjustable from 500 mm to 2,500 mm for high throughput.

· Impingement and cross-flow airflow: Top-down jets for fast surface freezing, cross-flow for uniform core freezing.

· Multi-zone control: Independent air temperature and fan speed zones along the tunnel.

· Hygienic construction: AISI 304/316L stainless steel with full-width access panels.

· PLC automation: Integrated control for air temperature, belt speed, defrost scheduling, and monitoring.

Modular Tunnel System

The Tunnel Belt Freezer’s modular design allows seamless assembly of 1,000–2,000 mm tunnel sections, customizable to the required length. This flexibility supports scalability and future production line adjustments. Site assembly is straightforward, reducing installation time while maintaining operational efficiency.

Advanced Airflow and Cooling

The equipment utilizes a high-velocityimpact airflow system combined with multi-zone temperature management. This system ensures rapid freezing while preserving product integrity.

Airflow Features:

· High-speed vertical airflow accelerates heat transfer 3–5 times over conventional cross-flow systems.

· Independent fans and temperature controllers per zone for precise control.

· Surface crust-freeze zone followed by core pull-down zone for even freezing.

This method reduces freezing times, enhances product quality, and supports energy efficiency, maintaining energy consumption per kilogram comparable to spiral freezers.

Applications

The Tunnel Belt Freezer is suitable for diverse food processing requirements:

· Seafood Processing: Rapid surface crust formation protects delicate fish fillets and pomfret products. Anti-corrosion stainless steel ensures durability.

· Bakery Items: Pizza bases, flatbreads, and similar products benefit from wide-band freezing to avoid deformation. Products freeze fully in 4–8 minutes.

· Coated Foods: Rapid surface fixation reduces coating slippage, maintaining appearance and texture.

· Meat Products: Hamburger patties and thin cuts maintain shape with single-layer flat placement on wide belts.

· Ready-to-Eat Meals: Supports both single-layer and multi-layer configurations for tray and pallet packaging.

Energy Efficiency and Automation

The Belt Freezer integrates modern energy-saving features to reduce operational costs while maintaining high performance. EC variable frequency fans match airflow to production load, minimizing energy consumption. PLC automation enables comprehensive control, including:

· Multi-zone belt speed and air temperature settings

· Defrost scheduling and remote monitoring

· SCADA interface via Modbus or BACnet

This automation ensures reproducible results and consistent product quality, reducing dependency on manual adjustments.

Hygiene and Maintenance

Constructed entirely of AISI 304 or 316L stainless steel, theTunnel Belt Freezer meets the highest hygiene standards. Full-length access panels enable thorough cleaning, and an optional CIP (Clean-in-Place) system accelerates sanitation. The flat belt is easily removable without tools, simplifying maintenance and minimizing downtime.

Technical Specifications