Patent · US Active

Axial flow fan with hub isolation slots

US8157524B2 · kind B2 · utility

8Cited by

44References

18Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Dana Nicgorski · Salem, US
Adam H. Sterne · Boca Raton, US
Michael Strupp · Durmersheim, DE

Key dates

Filing date	Dec 3, 2009
Grant date	Apr 17, 2012
Priority date	—
Expiry date	Jul 2, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D29/329
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An axial flow fan includes a hub rotatable about a central axis. The hub includes a front face and a cylindrical portion. The axial flow fan also includes a plurality of blades extending radially outwardly from the cylindrical portion of the hub, and an aperture through the front face of the hub. The aperture is at least partially defined by a first surface oriented non-parallel with the front face. The axial flow fan further includes a lip having a second surface adjacent the first surface that at least partially overlaps the aperture and provides a tortuous passageway through the aperture.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.