公开(公告)号：US11506213B2

公开(公告)日：2022-11-22

申请号：US16981928

申请日：2019-04-02

Applicant: LG ELECTRONICS INC.

Inventor： Taejun Kim ,  Atul Dhiman ,  Shivendra Singh ,  Jeeman Park ,  Yeongcheol Mun ,  Wonsuk Park ,  Siyoung Oh ,  Seokho Choi

IPC: F04D25/08 ,  F04D29/38 ,  F04D29/34 ,  F04D29/64

Abstract: A ceiling fan may include a shaft coupled to a ceiling, a cover to surround the shaft, a main blade having a blade hole which is a space open inward, and a sub-blade positioned in the blade hole. The sub-blade is disposed to have an angle of attack different from an angle of attack of the main blade. The ceiling fan may resolve a red zone of the air flow and may improve air volume and the flow rate due to the dual blades.