US 12,313,078 B2
Extraction impeller for axial compressor
Moorthi Subramaniyan, Bengaluru (IN); and Navaneeth Kishan T R, Kadugodi (IN)
Assigned to GE Infrastructure Technology LLC, Greenville, SC (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Apr. 26, 2023, as Appl. No. 18/307,038.
Prior Publication US 2024/0360837 A1, Oct. 31, 2024
Int. Cl. F04D 29/18 (2006.01); F01D 5/14 (2006.01); F04D 17/02 (2006.01); F01D 5/06 (2006.01); F04D 29/32 (2006.01)
CPC F04D 29/181 (2013.01) [F01D 5/141 (2013.01); F04D 17/025 (2013.01); F01D 5/06 (2013.01); F04D 29/324 (2013.01)] 25 Claims
OG exemplary drawing
 
1. An extraction impeller for an axial compressor, the extraction impeller comprising:
a body having a rotation axis and a surface perpendicular to the rotation axis;
a plurality of first vanes having an elongated S-shape arranged on the surface, the plurality of first vanes extending radially from an outer flow inlet edge of the body to a flow outlet hub centered on the surface at the rotation axis, wherein a radially inner end of each of the plurality of first vanes connect at the flow outlet hub in a direction perpendicular to the rotation axis, and wherein the flow outlet hub centered on the surface at the rotation axis has a multi-pointed star shape with each point thereof coupled to the radial inner end of a respective first vane of the plurality of first vanes;
a plurality of second vanes arranged on the surface, at least one of the plurality of second vanes between adjacent first vanes; and
a plurality of third vanes arranged on the surface between any adjacent second vanes and between adjacent first vanes and second vanes,
wherein the at least one of the plurality of second vanes is radially longer than the plurality of third vanes.