| 摘要 |
A fan of the invention includes an impeller 100 having a plurality of blades 2 and rotating around a rotation axis 5, and at least one balance weight 10 having at least one claw portion 11 and attached to the impeller 100 to correct the center of gravity of the impeller 100. The impeller 100 has a circumferential convex portion 31 formed along the circumferential direction, and on which the claw portion 11 is hooked to restrict a range of movement of the balance weight 10 in the radial direction of the impeller 100, and at least one radial concave-convex portion 32 formed along the radial direction, and on which the claw portion 11 is hooked to restrict the range of movement of the balance weight 10 in the circumferential direction of the impeller 100. |
