FIELD: electrical engineering.
SUBSTANCE: invention relates to the field of electrical machines. Axial flow fan (200) has axis (R) of rotation and comprises central hub (201), comprising a base wall and a lateral wall which projects from the base wall to form a cup-shaped structure, plurality of blades (204), each fixed to central hub (201) and comprising leading edge (205) and a trailing edge, a plurality of extractors of a fluid, which are associated with the base wall for conveying air from the inside of the cup-shaped structure to the outside of the cup-shaped structure through the base wall.
EFFECT: technical result is improved cooling.
25 cl, 8 dwg
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