Centrifugal fan inlet orifice and impeller assembly

Details Centrifugal fan inlet orifice and impeller assembly Centrifugal fan inlet orifice and impeller assembly

1994-06-13

1995-12-26

Look, Edward K.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Casing having tangential inlet or outlet

415119, 4152081, 4152111, 415220, 415223, 416186R, 416189, 416203, 416223B, F04D 2944, F04D 2966

Patent

active

054782015

ABSTRACT:
An inlet orifice structure and impeller assembly for a centrifugal flow fan. The inlet orifice has an elliptical cross section in a plane passing through the axis of rotation of the fan. The impeller is shrouded and also has a similarly elliptical cross section. The impeller is sized so that, when assembled together, the shroud overlaps and rotates around the stationary inlet orifice. In a preferred embodiment, there are 13 impeller blades nonuniformly spaced around a hub plate. A particular blade spacing is disclosed and claimed. The inner surface of the hub plate is arcuately curved to guide the air flow through the fan from its entering axial direction to its radial exiting direction. The contour of the hub plate allows for the fan drive motor to be partially recessed into the plate.

REFERENCES:
patent: 4253800 (1981-03-01), Segawa et al.
patent: 4712977 (1987-12-01), Gerfast
patent: 4971520 (1990-11-01), Van Houten
patent: 5026251 (1991-06-01), Kinoshita et al.
patent: 5066194 (1991-11-01), Amr et al.
patent: 5215437 (1993-06-01), TeVelde et al.
patent: 5215438 (1993-06-01), Chou et al.
patent: 5244347 (1993-09-01), Gallivan et al.
patent: 5248224 (1993-09-01), Amr
patent: 5249927 (1993-10-01), Vera
patent: 5273400 (1993-11-01), Amr

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