Patent ID: 8167548

Claim:
A steam turbine ( 10 ) with a rotor ( 11 ) which rotates around a machine axis ( 17 ), and a stator ( 12 ) which concentrically encompasses the rotor ( 11 ) with clearance, between which an annular passage ( 13 ) is formed which is exposed to throughflow by steam ( 20 ) in the axial direction and in which a multiplicity of rotor blades ( 14 , 15 ), which are fastened on the rotor ( 11 ), and fixed stator blades ( 16 ) are arranged in a plurality of stages, wherein the stator blades ( 16 ) of the last stage have a sweep with a sweep angle (α, α 1 , α 2 , α 3 , β, ε) which changes over the relative blade height (h/h m ), the sweep is formed with an S-shape with a sweep angle (α, α 1 , α 2 , α 3 , β, ε) which both adjacent to the stator ( 12 ) and adjacent to the rotor ( 11 ) is positive, and at mid-height of the stator blade ( 16 ) is negative.