Outlet diffusor for a centrifugal compressor
AssigneeUnited Turbine AB & Co., Kommanditbolag
InventorSven-Olof Kronogard
Life of this patent
Estimating the term…
Abstract
An outlet diffusor for a centrifugal compressor built up from two planar discs and a number of elements shaped as segments of a circle interposed therebetween; each element is defined by two opposed shaped edge faces, which together with corresponding faces in adjacent segments form tubular passages in the diffusor; the geometrical form of these passages may be varied by altering the cross section of the channels or the spacing between the segments, and by mounting the segments so they are angularly adjustable so that the flow characteristics of the diffusor may be altered and during use.
Claims6
An outlet diffusor in combination with a centrifugal compressor comprising a rotor for discharging radially and tangentially of the axis of rotation of the rotor, the diffusor comprising parallel, planar discs having an inner and outer periphery circumposed about the rotor, a plurality of individual separated elongated passage-forming elements circumferentially spaced, transversely between said discs, said elements comprising opposed planar, parallel side faces defining a segment of a circle along their length and extending in juxtaposed relation on the opposed inner surfaces of said discs and substantially from the inner to the outer periphery of said discs, said elements including opposed channel shaped edge faces converging in a concave transverse edge between said side faces and adjacent the inner periphery of said discs, the parallel side faces of the elements terminating in a rounded ends flanking the transverse edge at the inner periphery of the discs, the channel shaped edge faces merging into each other along the transverse edge, adjacent edge faces of adjacent elements combining to form divergent expansion passages from the inner to the outer periphery of said discs.
Dependencies are inferred from the claim text.