Fan shroud aspirator

Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Vane or deflector

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Details

4152081, 415223, 553853, 180 681, 123 417, 123 4149, F04D 2954

Patent

active

054275024

ABSTRACT:
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.

REFERENCES:
patent: 2197503 (1940-04-01), Martin
patent: 2708920 (1955-05-01), Pasturczak
patent: 2795291 (1957-06-01), Pierce
patent: 3104962 (1963-09-01), Duer
patent: 3137553 (1964-06-01), Billey
patent: 3186389 (1965-06-01), Sylvan
patent: 4086976 (1978-05-01), Holm et al.
patent: 4173995 (1979-11-01), Beck
patent: 4233040 (1980-11-01), Vogelaar et al.
patent: 4249922 (1981-02-01), Saele
patent: 4469490 (1984-09-01), Wilson
patent: 4606422 (1986-08-01), Jewett
patent: 5279503 (1994-01-01), Propst

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