Hürner Funken - Concrete Ventilator Chassis

Hürner Funken produces several types of industrial ventilators.

Due to the usage of plastics for the ventilator chassis, the ventilators aren’t that resistant against strong environmental influences - Especially the resistance against UV-light is a challenging topic.


The benefit of using concrete is the natural resistance against normal environmental influences. A special concrete formulation combined with special and selected raw materials allows a sufficient resistance against appearing acids and other aggressive materials. Further benefits are the noise and vibration damping of the concrete shell. The special developed Quantz-Concrete is fluent and thus any shape and geometry can be generated. 


Also the mold technology was investigated and optimized for the production process.

Two technologies are available:

a) traditional casting of 7mm thick casing shells    with double sided molds 

b) 3D rotation of the material in molds.

Both methods are leading to successful and satisfying results.


  • High chemical resistance
  • Noise reduction
  • Vibration reduction
  • same weight plastic housing!
  • Easy shape generation possible
  • Individual design
  • reduction of energy costs