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The range of blast freezers Thermofin TOFL created for deep shock freezing. There are blast freezers for floor montage. They equipped with axial fans with diameter from 400 to 630 mm, forcing or sucking air and block fin tubes. Adapted to work with natural refrigerant R744 (CO2) in capacity range from 22.9 to 228.0 kW.  Coolers provides high-quality freezing of all types of products and are used where rapid temperature reduction is required. The airflow range from 16 872 to 113 082 m³/h.

Fins made from aluminium with spacing 7.0, 10.0 and 12.0 mm. Special versions with another fin spacing are available for request, as an example: 20/10 mm, 24/12 mm, 28/14/7 mm, 40/20/10 mm.

The variable spacing of the fins ensures longer operation time of the device - greater throughput of tunnels, extension of the time between successive defrosting cycles and energy savings. It is mainly used in cooling chambers, freezing tunnels (Heinen). The blocks fin tubes are defrosted with hot gas or brine.

Characteristics of TOFL:

  • nominal capacity range from 22.9 to 228.0 kW
  • airflow range from 16 872 to 113 082 m³/h.
  • refrigerant R744 (CO2)
  • block fin tubes:
    • aluminium fins
    • fin spacing: 7,0; 10,0; 12.0 mm
    • parameters of block: 50 х 50 mm
  • axial fans:
    • from 2 to 8 peaces with diameter from 500 to 630 mm
    • two-way air supply
    • external rotor motors with IP54 protection class
    • motors with termal protection

Blast freezers TOFL are equipped with:

  • standard galvanized steel body with powder coating RAL9010
  • double and insulated tray
  • fan heaters
  • lowered defrosting shutters (with or without motor)



  • variable designs according to customers’ requirements


  • defrost dampers combined with hot-gas or brine defrost system
  • design possible with different materials
  • motor-driven or air-actuated damper design

Long operating times

  • split fin spacings extend the operating time between the defrost processes and ensure an efficient operation of the unit


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