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

Claim 0:
1. 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, a trailing edge, a windward side and a leeward side;
wherein each of the blades is connected to the hub through the root portion, the leading edge is connected to the hub and the blade tip at peripheral, and the trailing edge is opposite to the leading edge and is connected to the hub and the blade tip;
wherein each of the blades is approximately a curved thin plane, one surface of the blade is the windward side and another surface of the blade is the leeward side opposite to the windward side; and
wherein the windward side comprises a first turning point and a second turning point located at a line connecting midpoints of the blade, a first vertical height difference is formed from the blade tip to the first turning point, a second vertical height difference is formed from the first turning point to the second turning point, and the first vertical height difference is greater than the second vertical height difference.