| 摘要 |
PROBLEM TO BE SOLVED: To perform adjustment of rotation balance of an impeller for a centrifugal blower easily and in a short time.SOLUTION: An impeller 3 for a centrifugal blower includes: a main plate 31; a plurality of blades 32 in which one side in an axial direction is connected to the main plate 31; and a connection ring 33 for connecting the other side in the axial direction of the plurality of blades 32. On the one side surface in the axial direction on the outer peripheral part of the main plate 31, a peripheral groove 314 for mounting a balance weight W is formed across the whole circumference, on the connection ring 33, a peripheral groove 334 for mounting the balance weight W is formed across the whole circumference, and at a portion corresponding to the peripheral groove 314 on the other side surface in the axial direction of the main plate 31, an annular swollen part 315 is formed.SELECTED DRAWING: Figure 1 |
