| 摘要 |
PROBLEM TO BE SOLVED: To provide an impeller and a centrifugal compressor showing sufficient rigidity and compressive performance.SOLUTION: This invention relates to an impeller including a disc-shaped disc 30 having an axis O at its center and a plurality of blades 40 spaced apart in a circumferential direction at one side in a direction of the axis O of the disc 30 and defining flow passages extending from one side of the direction of the axis O toward a radial outer side, the blades 40 including at least one of an inlet and an outlet in an extending region of each of the prescribed flow passages, and having a low rigidity region where a plate thickness is relatively small and a falling angle in respect to the disc 30 is relatively small and a high rigidity region adjacent to the low rigidity region, showing a relative high plate thickness and a falling angle in respect to the disc 30 is relatively large.SELECTED DRAWING: Figure 2 |
