The Tunnel Freezer is a high-capacity, straight-line freezing system designed for continuous food processing and large-volume production. Products are conveyed through an insulated freezing tunnel on a belt or tray and exposed to controlled, high-velocity cold air for rapid and uniform heat transfer.
The system is suitable for large, uniform, packaged, or individually arranged food products, including meat blocks, fish, poultry, bakery products, prepared meals, and selected IQF products.
With a robust straight-line design, flexible conveyor configurations, adjustable airflow, and customizable tunnel length, the Tunnel Freezer provides a reliable freezing solution for demanding industrial production environments.
As an experienced Tunnel Freezer Manufacturer and Supplier, Huazhu Machinery provides customized tunnel freezing systems based on production capacity, product characteristics, freezing time, factory layout, and refrigeration requirements.
The Tunnel Freezer is designed for continuous, high-volume freezing, with standard configurations capable of handling 1,000–10,000+ kg/h depending on product type and process conditions.
High-velocity, adjustable airflow helps maintain consistent heat transfer throughout the freezing tunnel, supporting stable product temperatures and freezing performance.
The linear tunnel configuration provides a simple, reliable structure with easy access to major components, making it suitable for demanding food processing environments and continuous operation.
The straight-line layout provides convenient access for inspection, cleaning, belt sanitation, defrosting, and routine maintenance, helping reduce production downtime.
The system can be equipped with mesh, plastic modular, or chain-type conveyor belts according to product characteristics, handling requirements, and production processes.
As a Tunnel Freezer Manufacturer, Huazhu Machinery can customize tunnel length, belt width, capacity, airflow, refrigeration system, conveyor configuration, insulation, and control system to meet specific production requirements.
| Parameter | Specification |
| Capacity | 1,000–10,000+ kg/h |
| Belt Width | 1.0–3.0 m |
| Tunnel Length | Customizable, typically 10–50 m |
| Freezing Temperature | -30°C to -45°C |
| Refrigeration | Ammonia (R717) or CO₂ (R744) Cascade |
| Airflow | High-velocity, adjustable |
| Construction | Insulated panels with stainless steel interior |
| Belt Options | Mesh, plastic modular, or chain |
Actual capacity, tunnel dimensions, freezing time, and refrigeration configuration are customized according to product type, inlet temperature, target core temperature, belt loading, and production requirements.
The Industrial Tunnel Freezer is designed for continuous freezing of large-volume, uniform, packaged, and individually arranged food products.
Typical applications include:
● Meat and fish blocks
● Packaged poultry
● Bakery products and baking trays
● Boxed prepared meals
● Ready-to-eat and ready-to-cook foods
● Packaged food products
● Selected IQF products
● Frozen food ingredients
The Tunnel IQF Freezer configuration can also be used for certain IQF products when the belt type, airflow, product loading, and freezing conditions are appropriately configured.
The equipment is widely used in large-scale meat processing plants, seafood processing facilities, commercial bakeries, central kitchens, and industrial food production lines.
As a professional Tunnel Freezer Manufacturer and Supplier, Huazhu Machinery provides customized industrial freezing equipment for food processing companies worldwide.
We design and configure each Tunnel Freezer according to your required capacity, product characteristics, freezing time, factory space, conveyor configuration, and refrigeration conditions.
Our tunnel freezing systems can be configured for 1,000–10,000+ kg/h, making them suitable for medium- and large-scale food production.
Tunnel length, belt width, conveyor type, airflow, refrigeration system, insulation, and control system can be configured to meet different production requirements.
The freezing tunnel uses insulated panels and stainless steel interior components designed for demanding low-temperature food processing environments.
Huazhu Machinery provides equipment selection, system configuration, production-line integration, installation and commissioning guidance, and after-sales technical support.
Our industrial tunnel freezing systems are designed for continuous operation, easy maintenance, and stable freezing performance in demanding food processing facilities.
Pre-cool the Tunnel Freezer to the required operating temperature. Check the conveyor, refrigeration system, evaporator fans, and freezing chamber before starting production.
Start the conveyor and evaporator fans through the control system. Confirm stable belt movement and airflow before product loading.
Feed products evenly onto the conveyor, maintaining appropriate spacing and loading distribution to allow effective airflow around the products.
Continuously monitor belt speed, air temperature, airflow, and product core temperature. Adjust operating parameters according to product characteristics and required freezing conditions.
Ensure products reach the required target core temperature before leaving the freezing tunnel. Transfer frozen products to cold storage or the next processing stage.
Stop product feeding and allow the conveyor to run clear. Shut down the refrigeration and ventilation systems according to operating procedures, then perform regular defrosting, cleaning, and belt sanitation.
A Tunnel Freezer is a continuous industrial freezing machine that conveys food products through an insulated tunnel while exposing them to controlled cold airflow. It is designed for high-volume freezing of meat, seafood, bakery products, prepared meals, packaged foods, and other products.
A Tunnel Freezer uses a straight-line conveyor configuration, making it particularly suitable for high-throughput freezing and large or packaged products. A Spiral IQF Freezer uses a vertically stacked spiral conveyor to provide longer freezing time within a smaller footprint and is often selected where floor space is limited.
Our Tunnel IQF Freezer configurations can support capacities from approximately 1,000 to more than 10,000 kg/h. The actual capacity depends on product type, product size, inlet temperature, freezing time, target core temperature, and belt loading.
Yes. As a Tunnel Freezer Manufacturer, Huazhu Machinery provides customized freezing solutions. Tunnel length, belt width, conveyor type, airflow, refrigeration system, capacity, insulation, and control configuration can be adjusted according to your production requirements and factory layout.
An IQF Tunnel Freezer can be configured for suitable IQF products as well as packaged or individually arranged foods. Typical applications include meat, fish, poultry, bakery products, prepared meals, and selected frozen food ingredients. The optimal configuration depends on the product and required freezing process.
Huazhu Machinery is a Tunnel Freezer Manufacturer and Supplier specializing in customized industrial freezing equipment. We provide equipment configuration, capacity planning, system customization, production-line integration, commissioning guidance, and after-sales technical support for food processing applications.
If you have any questions, concerns, or need assistance, please feel free to contact us via phone, email, or online customer service at any time, and we will provide you with support and answers as soon as possible.
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