Compact substantially coplanar axial-flow fan, drive motor,...

Details Compact substantially coplanar axial-flow fan, drive motor,... Compact substantially coplanar axial-flow fan, drive motor,...

F - Mech Eng,Light,Heat,Weapons

04

D

230/18

F04D 25/06 (2006.01) F04D 19/00 (2006.01) F04D 29/52 (2006.01)

Patent

CA 1338735

An axial-flow fan, particularly a small fan which is axially compact, with a scroll plate surrounding the impeller and whose inner contour has a cylindrical configuration in the vicinity of the axial median plane and extends both towards the inlet side and the outlet side in a polygonal, particularly square profile accompanied by the formation of corner areas, and with a central, coaxial core formed by the drive motor, the impeller hub and the mounting flange for the drive motor; the core thereby has an annular surface conically tapering towards the inlet side face whose axial length is at least one-third of the hub length; with respect to the axial median plane, the scroll plate is asymmetrical in the corner areas and is made cylindrical over a longer distance from the axial median plane to the inlet side than to the outlet side.

433021

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