Axial fan for a cooling fan module
AssigneeJohnson Electric S.A.
InventorsGiuliano GABBIN, Ermanno PROCOPIO, Vincenzo LAMATTINA
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Abstract
An axial fan for a cooling fan module has a cup-shaped central hub with a front wall intended to be connected to the rotor of an electric motor at connection points and with a side wall from which a plurality of outer blades extend. At least one transverse opening is provided in the front wall of the hub, between each of the connection points and the side wall, the opening extending in the circumferential direction, relative to the axis of the hub, beyond the associated connection point in both directions, so that the vibrations transmitted during operation from the motor to the front wall of the hub are propagated towards the side wall of the hub following a path which is longer than a radial path.
Claims5
An axial fan for a cooling fan module, comprising an essentially cup-shaped central hub with a front wall configured to be connected to the rotor of an electric motor at a plurality of connection points and with a side wall from which a plurality of outer blades extend, the fan having an axis about which the fan rotates in use;
- wherein at least one essentially transverse opening is provided in the front wall of the hub, between each of said connection points and the side wall, said opening extending in the circumferential direction, relative to the axis of the hub, beyond the associated connection point in both directions, so that vibrations transmitted during operation from the motor to the front wall of the hub are propagated towards the side wall of said hub following a path which is longer than a radial path.
Dependencies are inferred from the claim text.