Patent ID: 11952915
Assignee: DELTA ELECTRONICS, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A fan, comprising:
a hub having an axle center; and
a plurality of fan blades disposed around the hub, wherein each of the fan blades has a bent portion and a blade portion, and the bent portion of each of the fan blades is extended along a surrounding direction surrounding the axle center,
wherein the bent portion of each of the fan blades is formed by bending a part of the blade portion of the respective fan blades, the blade portion of the respective fan blades has an opening formed adjacent to the bent portion of the respective fan blades, and the bent portion of each of the fan blades has an engaging portion, and
wherein the hub is welded with the bent portion of each of the fan blades along the surrounding direction.