Industrial refrigeration tunnel

air-cooledelectric

Overview
This high-performance tunnel blast freezer delivers a steady 100 kg per hour capacity for continuous industrial quick freezing. Suitable for meat, seafood, poultry, vegetables and ready meals. The mesh-belt tunnel design uses forced air cooling and continuous conveying for fast surface-to-core freezing. This tunnel freezer design has been exported to multiple international markets.

Parameters (Tunnel Blast Freezer)
Parameter — Data
Equipment Type — Mesh Belt Tunnel Freezer
Belt Type — Stainless steel mesh belt
Output Capacity — 100 kg/h
Inlet Temperature — +15°C
Outlet Core Temperature — -18°C
Inner Air Temperature — -38±3°C
Overall Dimension — 7400×1500×2200 mm (L×W×H)
Belt Width — 1000 mm
Tunnel Passable Height — 100 mm
Inlet & Outlet Device Length — 600 mm each
Refrigeration Consumption — 18 kW (+40°C / -40°C)
Compressor Model — BITZER S6H-20.2Y (2-stage)
Refrigerant — R404a
Condensing Type — Air cooled
Installed Power (Tunnel) — 2.25 kW
Installed Power (Compressor) — 16.8 kW

How the Tunnel Quick Freezer Works

• Place unpacked or tray-packed food evenly on the stainless steel mesh belt.
• Adjust belt speed to control freezing retention time based on product type.
• Cold air circulates at approximately -38°C to quickly freeze products from surface to core.
• Frozen goods exit automatically for packing, storage, or further processing.

Where to Use this Industrial Blast Freezing Machine

• Vegetable Processing Lines: freeze cauliflower, mixed greens and fresh farm vegetables.
• Fruit Processing Lines: freeze berries, whole fruits and soft fresh fruit produce.
• Meat Processing Lines: cool and freeze fresh pork, chicken, duck and other poultry products.
• Seafood Processing Lines: freeze whole fish, shrimp and common aquatic products for storage.
• Prepared Food Lines: freeze ready-to-cook meals and semi-finished food for extended shelf life.
• French Fry Production Lines: freeze cut potato fries to lock texture and natural flavor.
• Frozen Pastry Production Lines: freeze dumplings, buns and other flour products.

Features

• Durable stainless-steel belt: food-grade stainless-steel mesh belt ensures smooth conveying and long service life.
• Thick thermal insulation panels: 150 mm PUF insulation reduces thermal loss during continuous runs.
• Efficient heat exchange system: aluminum-alloy evaporator tubes and fans deliver stable airflow for uniform freezing.
• Trusted electrical parts: imported Schneider or Siemens electric components ensure stable and safe control.
• Durable evaporator and fan: aluminum-alloy tubes and fins for excellent heat transfer; stainless-steel fan housing resists corrosion.
• Effective water discharging design: fully welded stainless-steel plates and multiple drainage pipes channel meltwater safely out of the cabinet.

Advantages

• High freezing consistency: stable -38°C inner temperature supports uniform freezing of products.
• Easy maintenance: water defrost design reduces daily care and downtime.
• Reliable compressor: BITZER two-stage compressor for strong cooling capacity and long-term running.
• Space-saving layout: compact footprint fits existing production lines and factories with limited space.
• Complete drainage system: welded drainage plates and pipes keep the tunnel clean and dry.
• Factory direct supply: offered by the manufacturer for competitive pricing on wholesale orders.

Frequently Asked Questions (selected)

• Q1. What is the hourly capacity of this tunnel blast freezer? Its standard output is 100 kg per hour for regular frozen food production.
• Q2. What refrigerant does this mesh belt tunnel freezer use? The system uses R404a refrigerant.
• Q3. How often does the tunnel freezer defrost? The system uses water defrosting automatically every 12 hours.
• Q4. Can the belt speed of the freezer be adjusted? Yes, the running speed of the conveyor belt is adjustable.
• Q5. Is customization available for tunnel freezers? OEM/ODM orders are accepted to match specific capacity, size or voltage requirements.

Specifications

• Equipment Type: Mesh Belt Tunnel Freezer
• Belt Type: Stainless steel mesh belt
• Output Capacity: 100 kg/h
• Inner Air Temperature: -38 ± 3 °C
• Outlet Core Temperature: -18 °C
• Overall Dimension (L×W×H): 7400 × 1500 × 2200 mm
• Belt Width: 1000 mm
• Refrigeration Consumption: 18 kW
• Compressor: BITZER S6H-20.2Y (2-stage)
• Refrigerant: R404a
• Condensing Type: Air cooled