FAN Russian patent published in 2014 - IPC F04D25/08 

FIELD: engines and pumps.

SUBSTANCE: bladeless fan includes nozzle 1 and a creation device of flow through it. Nozzle 1 has internal channel 10, outlet opening 12 for receiving air flow from internal channel 10. Coanda surface 14 adjacent to outlet opening 12; with that, outlet opening 12 is located so that air flow can be directed along that surface, and a diffuser located after Coanda surface. Diffuser has surface 46. Air flow creation device through nozzle 1 is made in the form of impeller 30 driven by electric motor 22.

EFFECT: creation of a more uniform air flow along the whole working surface of the fan; making its more compact and safer.

17 cl, 5 dwg