Linde Nitrogen Tunnel Freezer

• Freezing of delicate or small food products such as berries, prawns, and diced vegetables.
• Rapid freezing of bakery items to preserve texture and reduce dehydration.
• Processing of prepared meals components requiring individual quick freezing.
• Cryogenic treatment for certain pharmaceutical or chemical products.

Typical capacity

Throughput for this class of equipment typically ranges from 300 kg/hr to over 2000 kg/hr, depending on product type and desired temperature.

Power supply

Units commonly require a 400V, 3-phase electrical supply for auxiliary components such as conveyor drives and control systems.

Footprint

A tunnel freezer of this stated length (11m) and width (1250mm) will require significant floor space, plus additional clearance for access and maintenance.

Refrigerant type

This unit utilises liquid nitrogen (LIN) as the primary refrigerant, requiring a dedicated LIN supply system.

Operating temperature

Cryogenic freezers typically operate at extremely low temperatures, often below -100°C, for rapid product freezing.

Construction material

Food-grade stainless steel is standard for product contact surfaces and the internal freezing chamber to meet hygiene standards.

• What are the main advantages of a nitrogen tunnel freezer?

  Nitrogen tunnel freezers offer very rapid freezing rates, which helps to preserve product quality, texture, and reduce drip loss. They are also highly flexible for various product types.

• What infrastructure is required to operate this type of freezer?

• How is maintenance typically performed on these units?

• Can this freezer handle different product types?

• What are the typical running costs for a nitrogen freezer?

IQF systems are highly regarded in food processing for their ability to freeze individual products uniformly whilst maintaining quality and texture. Buyers typically value machines with reliable refrigeration components and consistent belt speed control. When purchasing used equipment, inspecting freezing chamber condition, verifying temperature consistency, and checking refrigerant integrity are essential. Industry users appreciate their efficiency in handling delicate items and relatively low maintenance demands compared to alternative freezing methods.

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