Linde 750n Nitrogen Freezer

• Rapid freezing of delicate food items such as berries, prawns, and pasta.
• Preserving the individual integrity of products like diced vegetables and seafood.
• Freezing high-value products where dehydration and drip loss must be minimised.
• Processing temperature-sensitive goods requiring very fast freezing rates.

Typical capacity

For this class of equipment, throughput can range from several hundred kilograms to over a tonne per hour, depending on product type and belt speed.

Power supply

Units of this type commonly require a 400V, 3-phase electrical supply for motors and controls, in addition to the liquid nitrogen supply.

Footprint

A tunnel freezer with a 9-meter belt length typically requires a significant floor area, including space for nitrogen storage and ventilation.

Belt width

A 750mm wide belt is suitable for medium-volume production lines, accommodating a good spread of product.

Temperature range

Nitrogen freezers can achieve very low temperatures, typically down to -100°C or colder within the freezing zone.

Refrigerant

This equipment uses liquid nitrogen (LN2) as the primary refrigerant, which is vaporised to achieve rapid cooling.

• What are the main advantages of a nitrogen freezer over mechanical refrigeration?

  Nitrogen freezers offer extremely fast freezing rates, which helps to preserve product quality, texture, and minimise dehydration. They also have a smaller footprint for equivalent capacity and faster start-up/shutdown times.

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

• What maintenance is typically required for a unit like this?

• Is special ventilation required for a nitrogen freezer?

• What kind of products are best suited for IQF nitrogen freezing?

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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