The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2025
Filed:
Jun. 13, 2024
Delta Electronics, Inc., Taoyuan, TW;
Kuo-Tung Hsu, Taoyuan, TW;
Wen-Chun Hsu, Taoyuan, TW;
Chao-Fu Yang, Taoyuan, TW;
Shuo-Sheng Hsu, Taoyuan, TW;
Cheng-Yuan Lee, Taoyuan, TW;
DELTA ELECTRONICS, INC., Taoyuan, TW;
Abstract
A centrifugal fan includes a housing and an impeller. A top side of the housing has a main air inlet. A bottom side of the housing has a holder, a board, and plural supporting ribs connecting the holder and the board. The holder, the board, and the supporting ribs define a first secondary air inlet and a second secondary air inlet. In the extending direction of the central axis of the impeller, the impeller projects an upper projection to the top side, and projects a lower projection to the bottom side. The size of the upper projection is greater than the size of the main air inlet. At least one portion of the outer edge of the first secondary air inlet, the outer edge of the lower projection and the central axis are arranged in sequence.