Spiral Freezer

An ammonia spiral freezer uses ammonia (NH₃) as the refrigerant to rapidly freeze products on a spiral conveyor belt, allowing efficient use of floor space and high throughput. It’s widely used in food processing for freezing individual items quickly and uniformly.

 

Key Features:

1. Ammonia Refrigerant

• Uses ammonia, a natural refrigerant with zero ODP and GWP.

• Provides high thermal efficiency and lower operating costs compared to synthetic refrigerants.

2. Spiral Conveyor Design

• Products are transported on a spiral belt that maximizes freezing time within a compact footprint.

• Vertical spiral saves floor space while offering long belt length for efficient freezing.

3. Rapid and Uniform Freezing

• High-velocity cold air (around -30°C to -40°C) circulates around products on the belt.

• Ensures even freezing of individual items, preserving texture and quality.

4. Continuous Operation

• Supports high-throughput, automated production lines.

• Ideal for individually quick frozen (IQF) products such as chicken pieces, seafood, baked goods.

5. Energy Efficiency

• Ammonia’s thermodynamic properties reduce compressor power usage.

• Well-insulated enclosure minimizes heat ingress.

6. Flexible Product Handling

• Suitable for a wide range of products: meats, seafood, bakery items, vegetables, and ready meals.

• Adjustable belt speed and temperature control for different freezing requirements.

7. Hygienic and Easy to Clean

• Stainless steel construction in contact areas for food safety.

• Designed for easy cleaning and maintenance to meet industry hygiene standards.

8. Advanced Control and Safety Systems

• Automated control of temperature, airflow, and belt speed.

• Safety features include ammonia leak detection, emergency shutdowns, and ventilation systems.

 

 

 

 

 

 

 

IQF