公开(公告)号：US20240392808A1

公开(公告)日：2024-11-28

申请号：US18796221

申请日：2024-08-06

Applicant: Delta Electronics, Inc.

Inventor： Pei-Han Chiu ,  Sheng-Chieh Su ,  Chien-Ming Lee

IPC: F04D29/66 ,  F04D19/00 ,  F04D29/32 ,  F04D29/52

Abstract: A diagonal fan is disclosed and includes a frame and an impeller. The frame includes an inlet, an outlet, and an accommodation space. The inlet and the outlet are communicated through the accommodation space. The impeller is accommodated within the accommodation space and includes a hub, a cylindrical part, a conical section shell and a plurality of blades, wherein the cylindrical part is configured to accommodate a rotor. The cylindrical part includes a plurality of protrusion portions and a plurality of indentation portions disposed on an inner surface thereof, and the plurality of protrusion portions are abutted against an outer surface of a magnetic shell of the rotor.