Fan shroud aspirator

B - Operations – Transporting – 60 – H

Patent

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Details

B60H 1/24 (2006.01) F01P 5/06 (2006.01) F01P 11/10 (2006.01) F04D 29/42 (2006.01)

Patent

CA 2143475

An aspirator is mounted on a fan shroud surrounding a vehicle cooling fan. The aspirator has a housing which forms a duct which connects an opening to a port for connecting to a vehicle function. The aspirator is spaced apart from the fan and upstream from the fan and extends at an acute angle with respect to a tangent to a cylindrical wall of the shroud. The aspirator has a near edge which faces generally opposite to a direction of rotation of the fan blades and which is parallel to a leading edge of a fan blade when the leading edge is spaced apart from the near edge by a distance which is slightly larger than the width of the fan blade. The aspirator has a flange which projects parallel to a plane of rotation of the fan and generally in the rotation direction of the fan. The duct has a triangular cross sectional shape with an apex which projects in a direction which is upstream with respect flow of air moved by the fan.

Aspirateur monté sur un capotage qui entoure un ventilateur de véhicule. L'aspirateur comporte un boîtier formant un conduit reliant un orifice à un point d'accès, aux fins de raccordement au véhicule. L'aspirateur est espacé du ventilateur, dont il se trouve en amont, et se prolonge en décrivant un angle aigu par rapport à une tangente jusqu'à une paroi cylindrique du capotage du ventilateur. Il comporte un bord proximal faisant face généralement en direction opposée au sens de rotation des pales du ventilateur et étant parallèle au bord d'attaque des pales lorsque celui-ci est espacé du bord proximal, d'une distance légèrement supérieure à la largeur des pales. L'aspirateur comporte une bride se prolongeant parallèlement au plan de rotation du ventilateur et généralement dans le sens de rotation du ventilateur. Le conduit est de section triangulaire et comporte une partie sommitale se prolongeant en amont par rapport au sens de l'écoulement de l'air déplacé par le ventilateur.

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