Patent ID: 7789631
Filing Date: 2010-09-07
Classification: F04D

Abstract:
1. A compressor comprising: at least one rotor; and a plurality of rotating blades assigned to the at least one rotor and rotating together with the rotor, each rotating blade being delimited by a flow inlet leading edge, a flow outlet trailing edge and a blade surface extending between the leading edge and the trailing edge and forming a suction side and a pressure side, the leading edges of the rotating blades being slanted at a sweep angle changing with a height of the respective rotating blade so that, in a radially external area, the leading edges include at least one first forward sweep angle, include one backward sweep angle or zero sweep angle radially adjacent to the first forward sweep angle outside of the first forward sweep angle, and one second forward sweep angle radially adjacent to the backward sweep angle or zero sweep angle on the outside, the radially external area of the leading edges being situated between 60% and 100% of the radial height of the rotating blade.