초록 ▼

A fluid-flow machine for compressing or expanding a compressible medium is described, having a rotor on which there is arranged perpendicularly to the rotor axis at least one moving-blade row, the individual moving blades of which have moving-blades ends, which are free on the radial side and face t

A fluid-flow machine for compressing or expanding a compressible medium is described, having a rotor on which there is arranged perpendicularly to the rotor axis at least one moving-blade row, the individual moving blades of which have moving-blades ends, which are free on the radial side and face the inner wall of a casing, surrounding the rotor, in a freely movable manner, through the interior space of which casing the compressible medium flows axially relative to the rotor axis. An annular-passage system is open to receive the compressible medium on either side of the moving-blade row and the flow in the interior of the casing, and in a modified form may have surface contours on the ends of the blades to create pressure conditions which correspond approximately to the static pressure conditions at the opposite sides of the blades.

대표청구항 ▼

[ What is claimed as new and desired to be secured by Letters Patent of the United States is:] [1.]1. A fluid-flow machine for compressing or expanding a compressible medium, comprising a rotor with an axis on which there is a arranged perpendicularly to the rotor axis at least one moving-blade row,

[ What is claimed as new and desired to be secured by Letters Patent of the United States is:] [1.]1. A fluid-flow machine for compressing or expanding a compressible medium, comprising a rotor with an axis on which there is a arranged perpendicularly to the rotor axis at least one moving-blade row, the individual moving blades of which have moving-blade ends which are free on a radial side and face an inner wall of a casing, surrounding the rotor, in a freely movable manner, through an interior space of which casing the compressible medium flows axially relative to the rotor axis, which an annular-passage system is provided inside the casing, surrounding the rotor, in which a way as to be directly radially opposite the free ends and bounded by the moving-blade ends and respectively has on either side of the moving-blade row an opening passage, through one opening passage of which the compressible medium flows out of the interior space of the casing into the interior of the annular-passage system, and through the second opening passage the compressible medium discharges out of the annular-passage system into the interior space of the casing, and wherein the annular-passage system as well as the moving-blade ends, at least in regions which are adjacent to the opening passages, having surface contours which, at those points inside the annular-passage system where the opening passage open out, create pressure conditions which arise due to the formation of a dynamic annular flow inside the annular-passage system and correspond approximately to the static pressure conditions which prevail in the interior space of the casing respectively in the region of the opening passages.