COOLING FAN FOR A ROTARY MACHINE

摘要

The present invention provides a fan (1) for a rotary machine (M) for conveying a cooling fluid, comprising: a hub portion (2) provided with means for connection to a rotary element (S) of the rotary machine for the rotation in an axial direction (X); a peripheral portion (5) that surrounds the hub portion and develops from an external peripheral edge (6) towards the inside in order to define an inlet (7) for the fluid; a plurality of radial elements (8) that develop at least partially in axial direction and extend from the hub portion to the peripheral portion in order to define a plurality of ducts (9) for the passage of the fluid coming from the inlet. Said inlet delimits a surface whose area is included between 15% and 50% of the area delimited by the external peripheral edge. The invention concerns also a rotary machine equipped with said fan.