Patent ID: 7364404
Filing Date: 2008-04-29
Classification: F01D,F02C,F04D,F05D,Y02T,Y10S

Abstract:
1. A turbomachine comprising: at least one rotor, with the rotor comprising several rotor blades attached to a rotating shaft, a casing which is passed by a fluid flowing through the rotor, means for removal of the fluid provided at at least one blade of a blade row of the rotor on aerodynamically critical locations on at least one of a blade tip and annulus surfaces, wherein the at least one of the blade tip and annulus surfaces are provided in the form of at least one of surfaces on a hub and casing contours of the annulus, in an area of free blade ends, between a trailing edge plane HK and a plane which is located 25 percent of a meridional chord length Cm before a leading edge plane VK, the means for removal of the fluid being arranged on the annulus surfaces in a circumferentially non-uniform pattern, said pattern repeating in the circumferential direction.