Why do fans produce cool air

Filter fan

Filter fan are fans with an integrated dust filter that are used to cool a control cabinet or an automation system. The cooling is to protect the electronic components inside the housing from excessively high temperatures and polluted air. (P)

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Filter fans are used to prevent thermal overloading of electronic systems. An operating temperature that is too high increases the probability of failure of the components to a great extent. Dust and moisture cause other problems. But these factors can also be reduced with filter fans.

The fans produce positive pressure from filtered, cool air in the housing. This is sucked in from the outside. The prerequisite is therefore that the temperature of the ambient air is below that in the housing. The cool air absorbs the heat and escapes through an outlet opening or the outlet filter. The filters are there to remove dust particles from the air. A filter mat is usually used in the filter for cleaning. This means that only cleaner, cool air circulates in the control cabinet. Filter fans with EMC shielding are often offered. A metallic layer in the filter housing protects against electromagnetic waves.

Advantages of filter fans

  • Saves energy and resources
  • Increase in air performance
  • No need for compressed air cleaning during maintenance
  • Reduced maintenance intervals
  • Increases the service life of the electrical components in the housings.

Manufacturer of filter fans

  • The Rittal filter fans have an air output range of 20 to 900 m³ / h.
  • Pfaffenberg filter fans can achieve an output of up to 925 m³ / h.
  • STEGO manufactures filter fans for switch cabinets and other housings both indoors and outdoors. The air performance range is between 20 and 550 m³ / h.