FAN IMPELLER Russian patent published in 2019 - IPC F04D29/28 

FIELD: machine building.

SUBSTANCE: present invention relates to impeller (1) of a fan, comprising first (2) and second (3) end plates and blades (5) located between first (2) and second (3) end plates and connected to the first and second end plates. To obtain an effective fan impeller, outer surfaces (31) of blades (5) are inclined relative to axis of rotation (9) of impeller (1) of the fan, first (2) and second (3) end plates have outer portions that extend radially outward beyond outer edges (8) of the blades, the outer portion of first end plate (2) is generally bent or inclined towards second end plate (3), and outer portion (12) of second end plate (3) is generally bent or inclined away from first end plate (2), and blades (5) are profiled so as to have a profile in which the thickness of the blades varies between outer edges (8) of blades (5) and inner edges (14) of the blades.

EFFECT: invention aims to improve the performance of the fan impeller.

13 cl, 12 dwg