公开(公告)号：US20210071682A1

公开(公告)日：2021-03-11

申请号：US16793894

申请日：2020-02-18

Applicant: Delta Electronics, Inc.

Inventor： Chao-Fu Yang ,  Shao-Ning Lee ,  Chih-Chung Chen ,  Shun-Chen Chang ,  Kuo-Tung Hsu

IPC: F04D29/42 ,  F04D29/28

Abstract: A centrifugal fan is provided and includes an impeller, a motor, a first case and a second case. The motor is connected with the impeller to drive the impeller to rotate. The first case and the second case are assembled to form an accommodation space for accommodating the impeller and the motor. The first case includes a first side, a first guiding wall, a flow inlet and a flow outlet. The flow inlet is disposed on the first side, the first guiding wall is connected with the first side, and the flow outlet and the flow inlet are located at a same side of the centrifugal fan. The second case includes a second side and a second guiding wall connected with the second side. The first guiding wall and the second guiding wall are assembled to form a flow guiding channel, which has cross-sectional areas with different sizes.

公开(公告)号：US11199197B2

公开(公告)日：2021-12-14

申请号：US16793894

申请日：2020-02-18

Applicant: Delta Electronics, Inc.

Inventor： Chao-Fu Yang ,  Shao-Ning Lee ,  Chih-Chung Chen ,  Shun-Chen Chang ,  Kuo-Tung Hsu

IPC: F04D29/44 ,  F04D29/42 ,  F04D29/28

Abstract: A centrifugal fan is provided and includes an impeller, a motor, a first case and a second case. The motor is connected with the impeller to drive the impeller to rotate. The first case and the second case are assembled to form an accommodation space for accommodating the impeller and the motor. The first case includes a first side, a first guiding wall, a flow inlet and a flow outlet. The flow inlet is disposed on the first side, the first guiding wall is connected with the first side, and the flow outlet and the flow inlet are located at a same side of the centrifugal fan. The second case includes a second side and a second guiding wall connected with the second side. The first guiding wall and the second guiding wall are assembled to form a flow guiding channel, which has cross-sectional areas with different sizes.