IMPELLER, ROTARY MACHINE, AND IMPELLER MANUFACTURING METHOD

摘要

This impeller is equipped with: a disk section (30) that is fixed to a rotary shaft (5) at least at the side of a first end (33) in a direction of the axis (O) and extends outward in a radial direction from the side of a second end (36); blade sections (40) that are disposed to protrude from the disk section (30) toward the side of the first end (33); and a cover section (50) that covers the blade sections (40. The disk section (30) includes a first member (31) and a second member (32) that are divided from each other in the direction of the axis (O) by a dividing plane (B), which is orthogonal to the axis (O), at an inner side in the radial direction relative to the blade sections (40). The first member (31) and the second member (32) are joined on the dividing plane (B).