| 摘要 |
Fluid-entrainable material is transported along a first flow path and then around a bend or corner to a second flow path. In order to minimize impingement of the particles against a surface defining the outer radius of the corner, means, in the form of a Coanda nozzle which is further described in the specification, is arranged in the corner to increase the downstream flow velocity along a downstream surface in the second flow path leading from the inner radius of the corner as compared to downstream flow velocity along the surface defining the outer radius of the corner. Further, means are provided cooperating with the Coanda nozzle in the corner to remove some entraining fluid from the first flow path before the particles reach the corner to slow them down, and then reintroduce the removed entraining fluid into the second flow path. Because auxiliary fluid is added at the corner, vent means are provided to remove this fluid downstream of the corner and structure is disclosed which permits reintroduction of the vented fluid into the corner. |
