Patent ID: 11965522
Assignee: DELTA ELECTRONICS, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC B  F

Claim 10:
11. An impeller, comprising:
a hub; and
a plurality of blades surrounding the hub, each of the blades comprising a leading edge, a blade tip, a root portion and a trailing edge, wherein the each of the blades comprising a leading edge tip angle and a blade tip leading edge angle, and the leading edge tip angle is greater than the blade tip leading edge angle, wherein the leading edge tip angle is an included angle between a line connecting a leading edge tip point located above a first turning point of a windward side of the blade and a hub axis and a line connecting a leading edge root point and the hub axis, and the blade tip leading edge angle is an included angle between a line connecting an upper blade tip leading edge point located on a peripheral of the blade and the hub axis and the line connecting the leading edge root point and the hub axis.