A spiral freezer is a type of freezer used in food processing and manufacturing industries to rapidly freeze food products. It consists of a conveyor belt that spirals upward within a freezing chamber. As the food product travels along the conveyor belt, it is exposed to cold air at very low temperatures, which causes rapid freezing.

The spiral design allows for efficient use of space, as the conveyor belt wraps around vertically within the freezing chamber, maximizing the surface area available for freezing. This design also enables continuous processing, as new products can be continuously loaded onto the conveyor belt at the entrance while frozen products are simultaneously unloaded at the exit.

Spiral freezers are commonly used to freeze a variety of food products, including meats, poultry, seafood, fruits, vegetables, baked goods, and prepared meals. They offer several advantages over traditional batch freezers, including faster freezing times, better product quality, and higher throughput. Additionally, spiral freezers are often equipped with advanced control systems to monitor and adjust freezing conditions, ensuring optimal results for different types of food products.