Suction elbow provided with built-in guide blades
OwnerMichihiko Kawanoinventor
Life of this patent
Estimating the term…
Abstract
A suction elbow is divided in a plurality of sub-channels similar to each other by one or more guide vanes made of a curved plate and flat plates connected to the curved plate based on the following formulas. p0=h/{[f/(f−r)]m−1} {circle around (1)} an=p0r[f/(f−r)]n {circle around (2)} bn=an/f {circle around (3)} p0: overhang length at the inlet of the elbow h: outlet breadth of the elbow f: reduction ratio of the elbow (f=W/h) W: inlet breadth of the elbow m: number of sub-channels (m≧2) an: inlet breadth of n-th sub-channel (a0 indicates the radius of curvature of the inner side wall and am indicates the radius of curvature of the outer side wall) r: aspect ratio of the sub-channels bn: outlet breadth of n-th sub-channel
Claims11
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:
- p0=h/{[f/(f−r)]m−1 } {circle around (1)}
- an=p0r[f/(f−r)]n {circle around (2)}
- bn=aa/f {circle around (3)}
- wherein p0 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≧2;
- wherein an is defined to be an inlet breadth of an n-th sub-channel;
- wherein a0 is defined to be the first radius of curvature of the inner side wall;
- wherein am 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;
- and
- wherein bn is defined to be an outlet breadth of n-th sub-channel.
A suction elbow having a single channel, 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, said elbow conforming to the following formulas:
- p0=h/{[f/(f−r)]m−1 } {circle around (1)}
- an=p0r[f/(f−r)]n {circle around (2)}
- bn=aa/f {circle around (3)}
- wherein p0 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 h6 m=1;
- wherein an is defined to be an inlet breadth of the channel;
- wherein a0 is defined to be the first radius of curvature of the inner side wall;
- wherein am 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 channel;
- and
- wherein bn is defined to be an outlet breadth of the channel.
Dependencies are inferred from the claim text.