Ventilator

A ventilator is an intended apparatus, as its name indicates it, to create an artificial wind, a current of Air. Felt heat is function of the temperature but inversely proportional to the air velocity, therefore the air volume displacement caused by the ventilator will refresh the people.

  • the first ventilators were driven by the force human E or Animal E.
  • Dorénavant a electric Moteur involves a Hélice or a Turbine.
  • the flyers are small manual ventilators, generally functioning with popular pile S such LR6.

Use

The ventilators can be used for all the compressible fluids; they are used as well for comfort as in industry.

Various types

There exist two great types of ventilators:
  • the helicoid ventilators (or axial):

They consist of two statics parts the distributer and the diffuser, plus a moving part the Hélice propelled by the engine. The fluid arrives by the distributer and the propeller projects the fluid on diffuser.

On the ventilators with use domesticates the distributer and the diffuser is often absent.

  • the ventilators Centrifuges S:

It consist of two principal part: a Paddle wheel driven by an engine, turns in a stator marrying the wheel, this stator comprises two opening, one feeds the central part of the wheel in fluid, which penetrates by depression and is puffed up by centrifugal effect by the second opening.

They make it possible to reach a pressure by acceleration of the air in paddle wheels in rotation then by deceleration in the diffusers with broad radius of curvature. These ventilators allow a modulated regulation of the air flow by maintaining a pressure constant by simple action of a valve in aspiration.

Utility

The summer a ventilator provides a feeling of freshness to an human being by facilitating the evaporation of the perspiration and by homogenizing the temperature of a part, but does not allow to lower the temperature, the motive fluids on the contrary release from heat.

  • the ventilators allow the Ventilation buildings, work truck drivers, etc…

  • Element of a portable forging mill, the ventilator is often actuated by a crank.

  • One uses the ventilators in various fields by creating a flow of air making it possible to maintain a temperature acceptable in certain environments, in particular in data processing (Aircooling).

See too

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