VENTILATOR Russian patent published in 2016 - IPC F04D25/02 

FIELD: instrument making.

SUBSTANCE: invention relates to a ventilator. Ventilator consists of housing, impeller, drive motor and protective screen. Housing is made of synthetic material, is integral and mainly consists of a nozzle which tapers in feed flow direction, a cylindrical flow guide similar to a diffuser, straightening blades on whose end on side of hub of which a motor support bracket is mounted, a device for fixing protective screen, as well as a device for mounting said housing on an apparatus provided for this purpose or a building. Impeller is capable of rotating about a central axis and consists a central hub and blades mounted thereon, which, in region of their radial outer edges, are provided with flow elements (winglets).

EFFECT: invention is aimed at reducing noise and increasing efficiency.

14 cl, 6 dwg