IMPELLER AND AXIAL BLOWER IN WHICH SAME IS USED

摘要

In the present invention, an impeller is provided with a boss section and a plurality of rotating blades. The boss section has a cylindrical outer shape, and the rotating blades are radially attached to the boss section. The rotating blades include a first region and a second region. The first region has a first stagger angle distribution from an inner circumferential edge to a predetermined radius location, the inner circumferential edge being connected to the boss section. The second region has a second stagger angle distribution from a predetermined radius location to an outer circumferential edge, the predetermined radius location being adjacent to the first region. The second stagger angle distribution is different from the first stagger angle distribution. The second stagger angle distribution has a distribution in which the stagger angle decreases from a maximum radius location in the second region to the outer circumferential edge, the stagger angle becoming the maximum at the maximum radius location.