TURBO MACHINE IMPELLER VANE AND TURBO MACHINE Russian patent published in 2013 - IPC F01D5/14 

FIELD: machine building.

SUBSTANCE: turbo machine impeller vane comprises aerofoil and flange on its end. Said vane can form ring with multiple identical vanes, said ring including airfoils arranged radially thereon. Profile of aerofoil suction side nearby flange surface and along said suction side comprises first recessed element arranged axially at first half of aerofoil and first ledge located axially behind said recessed element. Sections of surfaces of flanges of vanes arranged in ring, nearby aerofoil forward and trailing edges, form front and rear mid circles. Two mid circles form the cone coaxial with ring axis. Recessed element represents element concaved relative to said cone while ledge is convexed relative thereto. Another invention of the set relates to turbo machine comprising, at least, one impeller with above described vane.

EFFECT: lower loses in flow over impeller vane channel.

13 cl, 9 dwg