FILTERING FAN Russian patent published in 2009 - IPC F04D29/70 

FIELD: engines and pumps.

SUBSTANCE: invention is related to fan making industry, namely, to filtering fans and in its operation it provides for highest supply of air, best moisture protection and high ability to trap dust at low required power of suction. Specified technical result is provided in filtering fan of electric cabinet or the one installed in electric/electronic device body, with supercharger that creates air flow and filtering element (3), which is installed in air flow and separates clean side, where fan is installed, from inlet side, besides filtering element (3) is retained in frame that might be fixed on body, covering opening for air admission that passes through body wall, besides protective grid (4) is located between filtering element (3) and supercharger, invention suggests that there is distance without jumpers between surface of filtering element (3) and protective grid (4), moreover, this distance is estimated so that it makes it possible for water drops to flow down on clean side of filtering element surface and prevents contact of water drops with protective grid.

EFFECT: provision of high air supply, high moisture protection and high ability to trap dust at low required power of suction.

18 cl, 5 dwg