Mesh Belt Tunnel Freezer

SW-MB is a mesh-belt tunnel freezer for particulate, small-piece and irregular-shaped foods. Capacity spans 200–3,000 kg/h with belt widths from 1,500 to 3,500 mm and tunnels 8–33 m long, running on R404A, R507, NH3 or CO2 at 21–63 kW. It covers everything from strawberries and green peas to whole chickens and whole fish.

How it works

Product travels on a stainless mesh belt through a symmetrical ring air duct that supplies cold air from above and below. Air distribution uniformity is 95 % or better, which removes freezing dead spots; the belt is split into 3–5 independently driven sections so each product can follow its own freezing curve.

Key Advantages

• Symmetric Air Duct: Top-bottom symmetric circular design achieves ≥95% airflow uniformity, eliminating freezing dead zones
• Wide Belt: Belt width 1500-3500mm optional, adaptable to different line requirements
• Multi-Zone Variable Speed: Belt divided into 3-5 independently controlled speed zones to match optimal freezing curves for different products
• Flexible Docking: Adjustable inlet/outlet height enables ground-level docking with upstream/downstream lines without elevators
• CIP Cleaning: Optional fully-automatic CIP system for high-frequency product changeover
• Energy Saving: VFD + EC fan options deliver 30%+ energy savings at partial load

Typical Applications

Strawberries/Blueberries/Raspberries, Sweet corn/Peas/Diced carrots, Dumplings/Tangyuan/Buns, Whole chicken/fish/large shrimp, IQF ice cream, French fries/hash browns, Mixed vegetable dices, Prepared meals

Specifying an SW-MB

Belt width is the first decision — it follows from piece size and required output. Then confirm the number of belt sections, whether ground-level docking with upstream and downstream equipment is needed, and whether an automatic CIP system is required for frequent product changes.