What is a crust freezer used for?

A crust freezer rapidly freezes the outer surface of a product, forming a 'crust'. This helps to stabilise delicate items, prevent sticking, and reduce dehydration before full freezing or further processing.

What are the benefits of using liquid nitrogen for freezing?

Liquid nitrogen offers extremely rapid freezing rates due to its very low temperature. This minimises ice crystal formation, which can help preserve product quality, texture, and reduce drip loss upon thawing.

Can this unit fully freeze products?

While it can achieve very low temperatures, a 'crust freezer' is primarily designed for surface freezing or hardening. For full freezing, products would typically proceed to a spiral freezer or blast freezer after this stage.

What products are suitable for a nitrogen mini crust freezer?

This type of freezer is well-suited for delicate items such as seafood, poultry, bakery products, and prepared meals that benefit from rapid surface hardening to maintain shape and quality.

What are the typical running costs associated with a nitrogen freezer?

The primary running cost is the consumption of liquid nitrogen, which varies significantly based on product load, desired crust depth, and operational hours. Electricity consumption for controls is generally lower.

Is special ventilation required for a nitrogen freezer?

Yes, adequate ventilation is crucial for any area using liquid nitrogen to prevent oxygen depletion. Safety protocols and gas detection systems are typically required.

Used Jackstone Nitrogen Mini Crust Freezer - IQF (Individual Quick Freezing) Systems, fotografia 1

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Used Jackstone Nitrogen Mini Crust Freezer - IQF (Individual Quick Freezing) Systems

Máquina usada

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Vendedor verificado

Jackstone Nitrogen Mini Crust Freezer

Name: Jackstone Nitrogen Mini Crust Freezer
Brand: Jackstone
SKU: jackstone-nitrogen-mini-crust-freezer-0714c481
Availability: InStock

Preço: Contacte o vendedor para saber o preço

Nitrogen Freezer Contact freezer/ crust freezer / Hardening tunnel Ideal for pre entry into a Spiral Freezer Make: Jackstone Model: Mini freezer 1998 Stainless belt, usable width 56cm 3.4m total length.

North East Lincolnshire, United Kingdom

A 5.929 km

Número do modelo

Mini freezer

Machinery Masters View

Informação típica para esta categoria de máquinas. Confirme sempre os pormenores com o vendedor.

Crust freezing of delicate products prior to further processing or full freezing.
Hardening the surface of products to prevent damage in subsequent handling or freezing stages.
Rapid surface freezing of sticky or fragile items before bulk freezing in a spiral freezer.
Pre-freezing of products to reduce moisture loss and improve final product quality.

Typical throughput: Varies significantly based on product type, thickness, and desired crust depth. These units are designed for rapid surface freezing rather than full freezing.
Power supply: Typically requires a standard industrial three-phase electrical supply for controls and ancillary components, alongside a liquid nitrogen supply.
Footprint: Compact for this class of equipment, designed to be integrated into existing lines. Total length for units of this type commonly ranges from 2 to 5 metres.
Belt width: Usable belt widths commonly found on units of this type range from 40cm to 80cm, suitable for various product sizes.
Construction material: Primarily stainless steel for hygiene and durability in food processing environments, particularly for contact surfaces and the main enclosure.
Refrigerant: Utilises liquid nitrogen (LN2) as the primary refrigerant for rapid crust freezing.
Temperature range: Operating temperatures for the freezing medium are typically extremely low, often below -100°C, for instantaneous surface freezing.

A crust freezer rapidly freezes the outer surface of a product, forming a 'crust'. This helps to stabilise delicate items, prevent sticking, and reduce dehydration before full freezing or further processing.

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.

Visão geral para este tipo de máquina

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