Patent ID: 11859633
Assignee: ASUSTEK COMPUTER INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A centrifugal fan, comprising:
an air inlet;
a shaft; and
a plurality of blades, arranged around the shaft, wherein each of the blades includes an air guiding portion on a side of the blade facing the air inlet, the air guiding portion comprises a first curve and a second curve, and an air inflow channel is formed between the first curve and the second curve of two adjacent air guiding portions respectively,
wherein a width of the air inflow channel is expanded in a direction away from the air inlet according to an expanding ratio,
wherein the blade includes a non-air guiding portion, and the air guiding portion is connected to the non-air guiding portion, and
wherein the air guiding portion includes a front edge and a rear edge, the front edge faces the air inlet, the rear edge is connected to the non-air guiding portion, and a thickness of the front edge is less than a thickness of the rear edge.