Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Casing having tangential inlet or outlet
Reexamination Certificate
2007-03-06
2007-03-06
Look, Edward K. (Department: 3745)
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Casing having tangential inlet or outlet
C415S206000
Reexamination Certificate
active
10915915
ABSTRACT:
A centrifugal blower with forward curved fan blades includes an inlet shroud whose shape is specifically designed for creating a smooth incoming airflow pattern that leads into the inner leading edges of the fan blades. The inlet shroud has first and second curved surfaces, wherein the centers of curvature of the two surfaces lie in the same plane, and the center of curvature as well as the radius of curvature of one curved surface is greater than that of the other. At least one center of curvature lies beyond the outer diameter of the impeller, and at least one center of curvature lies beyond the impeller's inner diameter, wherein the impeller's inner diameter is defined by the inner leading edges of the fan blades. Performance benefits are achieved when a forward curved blower with such an inlet shroud operates with a flow coefficient of between 9 and 52.
REFERENCES:
patent: 1862523 (1932-06-01), Anderson
patent: 2001522 (1935-05-01), Chester
patent: 2727680 (1955-12-01), Madison et al.
patent: 2798658 (1957-07-01), McDonald
patent: 2951630 (1960-09-01), Murphy
patent: 2981461 (1961-04-01), Murphy
patent: 3059833 (1962-10-01), Benoit
patent: 3070287 (1962-12-01), Eck
patent: 3217976 (1965-11-01), Downs
patent: 3221983 (1965-12-01), Trickler et al.
patent: 3306528 (1967-02-01), Eck
patent: 3307776 (1967-03-01), White
patent: 3627440 (1971-12-01), Wood
patent: 4890547 (1990-01-01), Wagner et al.
patent: 5279515 (1994-01-01), Moore et al.
patent: 5558499 (1996-09-01), Kobayashi
patent: 5570996 (1996-11-01), Smiley, III
patent: 5772399 (1998-06-01), Mehta et al.
Mehta Pravinchandra C.
Smiley III William A.
American Standard International Inc.
Beres William J.
Look Edward K.
O'Driscoll William
Wiehe Nathan
LandOfFree
Fan inlet and housing for a centrifugal blower whose... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fan inlet and housing for a centrifugal blower whose..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fan inlet and housing for a centrifugal blower whose... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3730297