Centrifugal blower having centrifugal fan arranged in scroll...

Details Centrifugal blower having centrifugal fan arranged in scroll... Centrifugal blower having centrifugal fan arranged in scroll...

2005-01-04

2005-01-04

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

C415S012000, C415S119000

Reexamination Certificate

active

06837680

ABSTRACT:
An inner surface of a peripheral wall of a scroll casing includes an initial section, which extends from a circumferentially projected end of a nose. The initial section includes a slant surface. The slant surface is angled relative to a rotational axis of a fan such that an axially remote part of the slant surface, which is axially remote from an air inlet of the scroll casing, is radially closer to blades of the fan in comparison to an axially less remote part of the slant surface, which is axially less remote from the air inlet in comparison to the axially remote part.

REFERENCES:
patent: 353994 (1886-12-01), Walker
patent: 3687360 (1972-08-01), Prew et al.
patent: 5839879 (1998-11-01), Kameoka et al.
patent: 6200093 (2001-03-01), Lee et al.
patent: 6254336 (2001-07-01), Ahn
patent: 10-196596 (1998-07-01), None

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