VENTILATION DEVICE AND VEHICLE WITH A VENTILATION DEVICE

摘要

A ventilation device has a holder, in particular a ventilation frame, with a substantially circular continuous opening for receiving a ventilation wheel rotating about the central axis thereof. The opening is bordered by an edge face running substantially cylinder-symmetrically about the central axis. At the edge face in two separate, diametrically opposed peripheral sections the radius is at least partly enlarged in comparison to the cylinder-symmetrical form in the remaining peripheral sections, and/or a circular projection of the edge face, which projection projects radially inwards, is axially offset away from a space provided for the ventilation wheel. Because of the corresponding shaping of the edge face of the opening contact and/or development of noise between the ventilation wheel and the edge of the opening is prevented in the ventilation frame in the event of a yawing of a ventilation wheel used when pivoting the ventilation device.

主权项

1. A ventilation device, comprising:
a fan wheel; a holder having a substantially circular continuous opening formed therein for receiving said fan wheel rotating about a center axis of said opening, said holder having a peripheral face and said opening being bordered by said peripheral face running substantially cylinder-symmetrically about said center axis; and said peripheral face having at least one of:
two separate circumferential portions diametrically opposite one another with a radius being at least partly enlarged in comparison with a cylinder-symmetrical form in remaining circumferential portions of said peripheral face; ora circumferential projection projecting from said peripheral face radially inwards and being axially offset from a space provided for said fan wheel.