Cool, chill, and freeze food quickly with a cryogenic tunnel

Superior freezing or chilling

Our tunnel freezers are ideal for cooling, chilling, and freezing a wide variety of food. With our tunnel freezer variants, you can process everything from small items such as burger patties and diced meats, berries, or vegetables that tend to freeze together to high-volume products and foods with prolonged cycles such as meats, seafood, and baked goods.

The cryogenic tunnel systems are designed to achieve fast freezing or chilling without causing thermal shock, yield loss, or dehydration to the product. The freezers are made of stainless steel to ensure a trouble-free operation and outstanding service life. Each of our IQF freezing tunnel systems can be standalone machines, or they can be joint for additional processing.

Cryogenic cooling or freezing for continuous processing

IQF tunnel freezers

All of our cryogenic tunnel solutions are designed to minimize the cost per kg of treated product and to ensure low kW consumption as well as a high yield. Factors that add up to ensure a small carbon footprint in your production. Our design also ensures easy cleaning, maintenance, and a long service life. Our cryo tunnels are based on the same process, where food is transported through a tunnel while immersed in very cold liquid nitrogen or sprayed with extremely cold LN2 or CO2 gas.

IQF cryogenic tunnels are produced in stainless steel to meet the international hygienic requirements and adhere to all USDA and OSHA guidelines. They are UL508A and CE certified, and on top of that, the freezers represent a low capital investment with quick installation and small footprint.

The range of tunnel solutions cover a linear tunnel freezer, multipass tunnel freezer, multibelt tunnel freezer, and an immersion tunnel freezer.

Cryogenic tunnel freezer variants

Cooling, chilling, and freezing of hot food

Our Linear Tunnel Freezer is ideal for cooling, chilling, or freezing of hot baked food. The cryogenic tunnel system can process a wide variety of food – from small items such as burger patties to large items such as bread loafs or large cut meat.

The Linear Tunnel Freezer has a field-expandable modular design and offers the widest configuration of cryogen spray and circulation fan arrangement to achieve superior freezing or chilling without thermal shock, yield loss, or dehydration. The rugged, in- and outside welded, stainless steel construction ensures trouble-free operation and the outstanding service life of the equipment.

Read more about the product by downloading the product sheets to the right.

Product information

Ideal for freezing food with prolonged cycles

Our Multipass Tunnel Freezer is ideal for cooling and freezing food with prolonged cycles, e.g. small portioned boiled, fried, or baked meat, fish, poultry, bakery products, shrimp, cockles, and mussels.

The Multipass Tunnel is linear and has three stacked belts. At the end of the first tier, the product is discharged to the second tier and returned to the entrance end of the freezer and discharged again onto the third tier and conveyed back to the exit end of the freezer. The speed of each belt is independently controllable, and an optimum cold distribution is obtained by the combination of recirculation and side wall fans.

Read more about the product by downloading the product sheets to the right.

Product information

Ideal for small pieces of food

Our Multibelt Tunnel Freezer is ideal for small food products that tend to freeze together when they come in contact, as the individual pieces are kept in motion. The conveyor system is made up of two or three short, inclined belts that tumble the product from one flight to the next. By keeping the individual pieces of food in motion, large volumes of small products such as diced meats, berries, or vegetables can be IQF frozen.

The speed of each belt is independently controllable, and optimum cold distribution is obtained by the combination of recirculation and side wall fans. This makes it possible to increase the belt loading density.

Read more about the product by downloading the product sheets to the right.

Product information

Fast freezing with liquid nitrogen

Our Immersion Tunnel Freezer is designed for high-volume IQF freezing where the food is conveyed through a bath of liquid nitrogen. This is the fastest heat transfer rate available in cryogenic freezing, but at the same time the process is characterized by lower cryogen efficiency rates due to high nitrogen usage.

The Immersion Tunnel Freezer is suitable for crust freezing as well as deep freezing, it can be a standalone machine, or it can be joint to our single belt linear tunnel freezer or our multi-pass tunnel freezer for post-cooling or pre-cooling of quality food.

The Immersion Tunnel Freezer is well-suited for products like marinated chicken tenders, flavored seafood patties, or filets as well as small, diced product like vegetables or berries and more delicate seafood including scallops and clams.

Read more about the product by downloading the product sheets to the right.

Product information

Product Sheet Immersion Freezer

A customized solution for your production

Regardless of your food industry, we are here to supply you with all the thermal treatment you need. We combine mechanical IQF, cryogenic IQF, and plate freezing to customize the right solution for you based on your business, production and objectives for food safety, quality, and sustainability.

Our IQF tunnel freezers are optimized to cool, chill, and freeze a variety of foods. With a modular design and a wide configuration of cryogen spray combined with a circulation fan arrangement, we offer a superior freezing and chilling. This is especially relevant for industries, such as the meat and poultry industry, where our freezers don’t thermally shock the product. This sustains the shape and color and ensures a great food quality without causing yield loss or dehydration. Our tunnel freezers can also be used for high-volume IQF freezing of small items such as burger patties and diced meats without having them freeze together.

You can read more about our thermal treatment solutions for the various food industries here

Industries

Cryogenic freezing

Cryogenic freezing is relevant for industries where food safety and food quality are of the essence. It is widely used among manufacturers that add high value to their products, have a limited space in their production or companies with products in the beginning of a product life cycle.

We recommend cryogenic freezing for new production lines, seasonal production, or small and medium productions of high-quality food. The investment in a cryogenic freezing solution is 2.5 times lower than in a mechanical solution, the initial start-up costs and operating costs are lower, dimensions are smaller, and cryogenic equipment is always ready to use and easy and fast to clean. However, as production grows, the operational costs of cryogenic freezing will exceed the costs of running a mechanical solution.

Read more about our IQF cryogenic solutions here

Solutions

Customers

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Automation and services

Automate your production

You can also combine your cryogenic solution with highly technological auxiliary equipment. This will automate your production in order to reduce manual labor, increase hygiene, and maximize production time and efficiency.

Service & support

To keep your down time to a minimum, we offer worldwide 24/7 support. Our global setup across Europe, Asia, and the US allows us to respond very fast to any request, onshore as well as offshore.

Cryogenic Tunnel Freezers

Superior freezing or chilling

IQF tunnel freezers

Cryogenic tunnel freezer variants

Cooling, chilling, and freezing of hot food

Ideal for freezing food with prolonged cycles

Ideal for small pieces of food

Fast freezing with liquid nitrogen

A customized solution for your production

Cryogenic freezing

Trusted by brands with purpose

Automation and services

Automate your production

Service & support

Let’s talk about your opportunities