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:
Jun. 25, 2024
Filed:
Oct. 14, 2021
Shanghai Jiao Tong University, Shanghai, CN;
Sjtu Turbo-fan Technology Co., Ltd., Shanghai, CN;
SHANGHAI JIAO TONG UNIVERSITY, Shanghai, CN;
SITU TURBO-FAN TECHNOLOGY CO., LTD., Shanghai, CN;
Abstract
Disclosed is a noise reduction device for heat dissipation fans, the noise reduction device being applied to a heat dissipation fan with an interference structure for rotor and stator blades, wherein the noise reduction device comprises a duct formed at an end portion of a through-flow area of the heat dissipation fan, the inner diameter D of the duct is determined by the size and the rotation speed of the heat dissipation fan, and the axial length L of the duct is determined by an acoustic cutoff condition of the heat dissipation fan.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile