| 摘要 |
PROBLEM TO BE SOLVED: To provide an impeller, a rotating machine, and a compressor system having sufficient durability.SOLUTION: An impeller comprises: an inner peripheral side member 60 in which an engaging groove 8 is formed; and an outer peripheral side member including an engaging part 9 housed in the engaging groove 8, and a body part 71 extending outward in a radial direction from the engaging part 9. The engaging groove 8 comprises: an upstream surface 81 located on one side in a direction of an axis line O and facing another side; and a downstream surface 82 located on the other side in the direction of the axis line O and facing the one side. An upstream protruding part 84 is formed in the upstream surface 81. A downstream protruding part 85 is formed in the downstream surface 82. The engaging part 9 comprises: an upstream opposed surface 94 opposed to the upstream surface 81; a downstream opposed surface 95 opposed to the downstream surface 82; an upstream outside protruding part P1 in contact with the upstream surface 81; a downstream inside protruding part P4 in contact with the downstream surface 82; an upstream contact surface 92 in contact with the upstream protruding part 84; and a downstream contact surface 93 in contact with the downstream protruding part 85.SELECTED DRAWING: Figure 3 |
