公开(公告)号：US12025143B2

公开(公告)日：2024-07-02

申请号：US17569125

申请日：2022-01-05

Applicant: DELTA ELECTRONICS, INC.

Inventor： Shun-Chen Chang ,  Chao-Fu Yang ,  Chien-Hung Chen ,  Chien-Chih Huang

IPC: F04D25/08 ,  F04D25/06 ,  F04D29/32 ,  F04D29/38 ,  F04D29/54

CPC classification number: F04D25/082 ,  F04D25/0606 ,  F04D29/329 ,  F04D29/384 ,  F04D29/545 ,  F04D29/542 ,  F05B2240/14 ,  F05B2240/301 ,  F05B2260/20

Abstract: A fan includes a frame, an impeller and a motor. The impeller includes a hub, a plurality of blades, first air-guiding plates and second air-guiding plates. The hub has a tapered shape. A width of the hub gradually increases along a direction from a top portion of the hub to a bottom portion of the hub. The hub has at least an air vent. The blades are disposed around an outer periphery of the hub. The first air-guiding plates and the second air-guiding plates are disposed around an inner periphery of the hub. The first air-guiding plates are arranged between two of the second air-guiding plates in staggered. The second air-guiding plates are arranged between two of the first air-guiding plates in staggered. The first air-guiding plates and the second air-guiding plates have different thicknesses, heights or shapes.

公开(公告)号：US11078915B2

公开(公告)日：2021-08-03

申请号：US16596750

申请日：2019-10-08

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chien-Hung Chen ,  Chao-Fu Yang ,  Chien-Chih Huang ,  Yueh-Lung Huang ,  Shun-Chen Chang

IPC: F04D19/02 ,  F04D29/32 ,  F04D29/54 ,  F04D19/00

Abstract: A contra-rotating fan structure includes a first base, a first fan, a second base, and a second fan. The first fan is rotatably disposed on the first base and includes a first hub. The first hub has a first largest width. The second fan is rotatably disposed on the second base and includes a second hub. The second hub has a second largest width. The first base and the second base are located between the first fan and the second fan. The second largest width is greater than the first largest width.