Impeller blade with reduced stress

Details Impeller blade with reduced stress Impeller blade with reduced stress

1993-09-29

1994-08-30

Kwon, John T.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Runner having full circular shroud for blades

416223A, F04D 2918

Patent

active

053421710

ABSTRACT:
A fluid impeller blade with lowered stress and increased useful life has an edge extending from the hub of the blade and forming, in part, a boundary for axial fluid flow. The edge, at least at its extremity, is spaced axially into the blade, at an angle of about 0.5.degree. to about 20.degree. from the radial line through the edge at the hub of the blade, whereby the mass of blade material exerting centrifugal force on the edge at the blade hub during rotation of the impeller is reduced.

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