AXIAL-FLOW COMPRESSOR BLADE Russian patent published in 2014 - IPC F04D29/68 F04D29/38 F01D5/14 

FIELD: machine building.

SUBSTANCE: axial-flow compressor blade comprises an entrance edge, an exit edge, a pressure surface and a back with its surface being fitted by spherical vortex generators concave to the inside of the blade. Each vortex generator is equipped by at least two supply channels with outlet holes with the diameter of (0.05 - 0.25)D which are equidistanced from the vortex generator symmetry axis oriented in the direction of the approach flow. Distance from the vortex generator symmetry axis to the outlet hole amounts to (0.1 - 0.4)D. The inlet holes of the supply channels are set on the pressure surface and the outlet ones are set at the distance of (0.025 - 0.7)D from the entrance edge of the vortex generator. The supply channels are made at the angle of 20° - 110° to the blade chord, where D - the diameter of the vortex generator indentation.

EFFECT: increased range of attached flotation over the blades, increased air flow through the compressor and its improved efficiency.

5 cl, 5 dwg