Centrifugal fan

Details Centrifugal fan Centrifugal fan

2005-03-15

2005-03-15

Lopez, F. Daniel (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Scroll or helical type casing with specific exit nozzle

C416S21400A, C416S189000

Reexamination Certificate

active

06866480

ABSTRACT:
A centrifugal fan with single or double intake is provided with a fan impeller of a closed type which is formed of a rotating bladed wheel having at least a covering element. Blades of the fan impeller are flat and are backwardly inclined with respect to a direction of rotation of the fan impeller, and the covering element comprises along a direction of flow a frustoconical surface portion, a first curved surface portion and a second curved surface portion, wherein a radius of curvature of the first curved surface portion is smaller than a radius of curvature of the second curved surface portion.

REFERENCES:
patent: 2727680 (1955-12-01), Madison et al.
patent: 4647271 (1987-03-01), Nagai et al.
patent: 1403083 (1969-01-01), None
patent: 0692637 (1996-01-01), None
patent: 0867619 (1998-09-01), None
patent: 0955468 (1999-11-01), None
patent: 1141406 (1957-09-01), None

Affiliated with

Also associated with

Rating

Centrifugal fan does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Centrifugal fan, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Centrifugal fan will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3439562