Compressor impeller, centrifugal compressor, processing method of compressor impeller, and processing apparatus of compressor impeller

摘要

The compressor impeller (8) includes a (16) fixed to one end of the shaft and a plurality of blades (17) arranged on the outer periphery of the (16). Each blade (17) has a leading edge (17 b) and a trailing edge (17 c) and has a wing surface (17 d) which is a curved surface drawn by a trajectory of moving a straight generating line (17 e). The busbar has an intersection point (a) with the trailing edge on the trailing edge side and is inclined toward the radially inner side of the shaft from the one end side in the axial direction of the shaft to the other end side .