Patent ID: 6290266
Filing Date: 2001-09-18
Classification: F15D,F16L,F24F,F28F

Abstract:
A suction elbow, comprising an elbow member having an inlet and an outlet and a source of suction operatively connected to the inlet of the elbow member,the elbow member further comprising an inner side wall having a curved portion defining a first radius, an outer curved portion defining a second radius, at least one guide vane having a curved portion defining a radius and a straight portion connected to the curved portion, wherein the at least one guide vane is disposed to define sub-channels and wherein the suction elbow conforms to the following formulas:p.sub.0 =h/{[f/(f-r)].sup.m -1 } 1a.sub.n =p.sub.0 r[f/(f-r)].sup.n 2b.sub.n =a.sub.a /f 3wherein p.sub.0 is defined to be an overhang length at an inlet of the elbow;wherein h is defined to be an outlet breadth of the elbow;wherein f is defined to be a reduction ratio of the elbow and f=W/h;wherein W is defined to be an inlet breadth of the elbow;wherein m is defined to be a number of sub-channels wherein m.gtoreq.2;wherein a.sub.n is defined to be an inlet breadth of an n-th sub-channel;wherein a.sub.0 is defined to be the first radius of curvature of the inner side wall;wherein a.sub.m is defined to be the second radius of curvature of the outer side wall;wherein r is defined to be an aspect ratio of the sub-channels; andwherein b.sub.n is defined to be an outlet breadth of n-th sub-channel.