Patent ID: 6090175
Filing Date: 2000-07-18
Classification: B01D

Abstract:
An inlet for conveying a fluid to a housing having a top wall, said fluid inlet comprising a horizontally disposed scroll duct mounted on the top wall of the housing, said scroll duct having an inlet, an open-ended vertically disposed cylindrical duct mounted on the top wall of the housing and communicating with the interior of the housing, said cylindrical duct having a top edge and a bottom edge, said scroll duct having a top wall and a bottom wall and an arcuate side wall extending progressively radially inwardly to merge with a side wall of said cylindrical duct to thereby provide a progressively decreasing scroll duct passage between the side wall of the scroll duct and the cylindrical duct, the top edge of the cylindrical duct being spaced below the top wall of scroll duct, whereby a horizontal linear flow of gas entering the scroll duct inlet is transformed to a circular flow around the exterior of the cylindrical duct, the progressively decreasing scroll duct passage changing the circular fluid flow to radial flow forcing the fluid over the top edge of the cylindrical duct to a downwardly spiraling flow through the cylindrical duct into the housing to thereby provide a cloud formation of fluid at the top of the housing which flows uniformly downwardly in the housing.