FAN Russian patent published in 2015 - IPC F04D25/08 

FIELD: ventilation.

SUBSTANCE: invention comprises a base with an air inlet hole and an air outlet hole, with that, an impeller and an engine designed for rotation of the impeller to create an air flow from the air inlet hole to the air outlet hole are located in the base. Besides, the fan includes an elongated vertical ring-shaped nozzle containing an internal passage having an air inlet hole intended to receive the air flow from the base and an outlet section intended to discharge the air flow; with that, the nozzle determines the hole through which the air flow leaving the outlet section draws the air outside the fan.

EFFECT: design of a small-size fan with a uniform air flow.

20 cl, 14 dwg