Spiral Freezers for Continuous Food Production
A spiral freezer freezes large volumes of product in a limited floor area. The conveyor belt runs in stacked spiral tiers inside an insulated cabin, so the product stays in the cold airflow for the time it needs without a long straight line. Frigo System spiral freezers offer a freezing capacity of 250 to 3,000 kg per hour.
How a Spiral Freezer Works
- Product enters the cabin on the conveyor belt from the production line.
- The belt carries it along the spiral while cold air from the evaporators flows across the tiers.
- Belt speed is set so the product stays inside long enough to reach its target temperature.
- Frozen product leaves the cabin, ready for packing and cold storage.
Technical Specifications
| Feature | Specification |
|---|---|
| Capacity | 250–3,000 kg/h |
| Insulation | 120–150 mm polyurethane-filled sandwich panels; stainless steel surface available depending on the application |
| Conveyor | Special high-strength stainless steel mesh or PVC belt options |
| Evaporator | Densely designed for good heat exchange |
| Control | Stainless steel electrical control panel; relay, PLC or touch screen control |
| Safety | Conveyor rotating on the inductor, conveyor regulator and emergency switch |
Products Suited to Spiral Freezing
Spiral freezers are widely used for seafood, meat, processed poultry, bakery products, fruit, vegetables and ice cream. The belt type and freezing time are selected according to the product.
Why Choose a Spiral Freezer?
- Less floor space: The stacked belt gives a long product path on a small footprint.
- Continuous production: Product flows through without stopping to load and unload batches.
- Fast freezing: Rapid freezing limits ice crystal formation and helps protect texture, flavour and appearance.
- Stainless options: Stainless steel belts and panel surfaces are available.
Read more about the benefits of spiral freezers.
Spiral Freezer or Blast Freezer Room?
A blast freezer room freezes product in batches. A spiral freezer suits lines where product comes off production continuously at a steady rate. Frozen product can then be kept in a cold room.
Frequently Asked Questions
What is a spiral freezer?
A continuous freezing system in which product travels on a conveyor belt through stacked spiral tiers inside an insulated cabin while cold air flows across it.
What capacity do your spiral freezers have?
Between 250 and 3,000 kg per hour. The right size depends on the product and the required freezing time.
How is a spiral freezer different from a tunnel freezer?
Both freeze continuously. A tunnel’s belt runs in a straight line, while a spiral stacks the belt in tiers, which saves floor space.
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