Method for the reduction of sound emission as well as for the improvement of the air output and the efficiency in an axial flow machine, and flow machine

摘要

An axial flow machine (1) having a rotor (2) that rotates about a fixed axis (5) the rotor having a number of blades (4), and a casing (3), radially surrounding the rotor (2). A turbulence generator (14) is positioned in a ring-shaped gap (9) formed between the tips (7) of the blades (4) and the inner surface (8) of the casing (3) to limit the sound emission of the flow machine (1).