Centrifugal impeller and pump apparatus

Details Centrifugal impeller and pump apparatus Centrifugal impeller and pump apparatus

2006-12-26

2006-12-26

Nguyen, Hoang (Department: 3748)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Casing having tangential inlet or outlet

C415S203000

Reexamination Certificate

active

07153097

ABSTRACT:
The centrifugal impeller includes a plurality of blades (3), a plurality of fluid paths (P) for delivering a fluid from an impeller inlet (1) to an impeller outlet (2), and a shroud (4) and a hub (5) for forming the fluid paths (P). Each of the fluid paths (P) is formed between adjacent two of the blades (3). A curved line (L3) of the shroud (4) curves so as to project toward the hub (5) in a region from a blade inlet (A) to a predetermined position (C) of the blade (3), and the curved line (L3) curves so as to project toward the opposite side of the hub (5) in a region from the predetermined position (C) to a blade outlet (B).

REFERENCES:
patent: 2390504 (1945-12-01), Berger
patent: 2648492 (1953-08-01), Stalker
patent: 3205828 (1965-09-01), Rupp
patent: 4752187 (1988-06-01), Hergt et al.
patent: 509-458 (1930-10-01), None
patent: 1 002 707 (1952-03-01), None
patent: 160474 (1921-03-01), None

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