Impeller blade with reduced stress

Details Impeller blade with reduced stress Impeller blade with reduced stress

F - Mech Eng,Light,Heat,Weapons

01

C

F01C 5/00 (2006.01) F01D 5/04 (2006.01) F04D 29/28 (2006.01)

Patent

CA 2120428

- 13 - IMPELLER BLADE WITH REDUCED STRESS ABSTRACT OF THE DISCLOSURE 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° to about 20° 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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