High efficiency axial fan

Details High efficiency axial fan High efficiency axial fan

2007-09-25

2007-09-25

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Cantilever blade

C416S22300B, C416SDIG004

Reexamination Certificate

active

10570805

ABSTRACT:
Disclosed is an axial fan (1) rotating in a plane (XY) about an axis (2) having a central hub (3) and a plurality of blades (4), which have a root (5) and a tip (6). The blades (4) are delimited by a concave leading edge (7), whose projection in the fan plane of rotation (XY) is defined by two circular arc segments, and a convex trailing edge (8), whose projection in the fan plane of rotation (XY) is defined by one circular arc segment. The blades (4) are made from sections with aerodynamic profiles relatively extending in the direction of their centre line, providing good flow rate and air pressure relative to the overall dimensions of the fan.

REFERENCES:
patent: 4684324 (1987-08-01), Perosino
patent: 5273400 (1993-12-01), Amr
patent: 6086330 (2000-07-01), Press et al.
patent: 6554574 (2003-04-01), Spaggiari
patent: 7070392 (2006-07-01), Bradbury et al.
patent: 37 24 319 (1989-02-01), None
patent: 1 016 788 (2000-07-01), None

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