CENTRIFUGAL IMPELLER AND CENTRIFUGAL BLOWER

摘要

PROBLEM TO BE SOLVED: To solve the problem of the current design having low efficiency of a blower.SOLUTION: A centrifugal impeller includes a cover, a base opposite the cover, and a plurality of blades. The cover has an inlet. The plurality of blades surround the inlet and are arranged between and connect the cover and the base. Inlet edges of one end of the blades adjacent to the center of the impeller define a cavity in communication with the inlet. The dimension of the cavity gradually decreases along the direction from the cover towards the base.