Impeller for rotary fluid machine

Details Impeller for rotary fluid machine Impeller for rotary fluid machine

1986-03-18

1987-05-19

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Radially extending web or end plate

416186R, 416187, 415213R, F04D 2922

Patent

active

046663738

ABSTRACT:
An impeller for a rotary fluid machine of the centrifugal type is disclosed which is adapted to be constructed as a liquid pump or gas compressor. The impeller comprises a disc having a boss which is fitted on a drive shaft, and a plurality of blades which are uniformly spaced apart circumferentially and axially project from at least one side of the disc. Each blade has a front and a rear surface, and a fluid path is defined between the front surface of a blade and the rear surface of an adjacent blade. The fluid path is arranged to extend from around the boss to the outer periphery of the disc. The width of the fluid path decreases gradually from around the boss toward the outer periphery of the disc, but the fluid path has a constant depth. The front and the rear surface of each blade are substantially arranged along circular arcs having different radii of curvature which are struck from a common center point. Center points associated with different blades are disposed on a single imaginary circle which is concentric with the disc.

REFERENCES:
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patent: 1953064 (1934-04-01), Dowson
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patent: 3477384 (1969-11-01), Hlinka
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patent: 3746467 (1973-07-01), Buse
patent: 3788765 (1974-01-01), Rusak
patent: 4253798 (1981-03-01), Sugiura

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