ALETA DE ROTOR COM FLUXO RADIAL COM TENSAO REDUZIDA E COM MAIOR VIDA UTIL;ROTOR RADIAL COM TENSAO CENTRIFUGA REDUZIDA E MAIOR VIDA UTIL E METODO PARA REDUCAO DA TENSAO CENTRIFUGA EM UMA ALETA DE ROTOR COM FLUXO RADIAL NO CUBO DE RODA DA ARESTA DA ALETA FORMANDO UMA ABERTURA PARA FLUXO AXIAL

摘要

A fluid impeller blade with lowered stress and increased useful life has an edge extending from the hub (12) of the blade (16) and forming, in part, a boundary for axial fluid flow. The edge (26), at least at its extremity, is spaced axially into the blade (16), at an angle of about 2 to about 20 DEG 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 (10) is reduced.