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:
Sep. 08, 2026
Filed:
Jun. 27, 2023
York Guangzhou Air Conditioning and Refrigeration Co., Ltd., Qingyuan City, CN;
Tyco Fire & Security Gmbh, Neuhausen am Rheinfall, CH;
Baojun Chang, Qingyuan City, CN;
Qinghua Tang, Qingyuan City, CN;
Xiaokui MA, Qingyuan City, CN;
Li Wang, Qingyuan City, CN;
York Guangzhou Air Conditioning and Refrigeration Co., Ltd., Qingyuan, CN;
Tyco Fire & Security GmbH, Neuhausen am Rheinfall, CH;
Abstract
An air guide ring includes an annular air guide portion having an air duct that accommodates an impeller of an axial flow fan configured to rotate therein. The annular air guide portion has an inner side wall and an outer side wall, the air duct is enclosed by the inner side wall, and a plurality of noise reduction devices is arranged on the inner side wall of the annular air guide portion in a circumferential direction of the air guide ring The plurality of noise reduction devices is configured to reduce noise in the air duct.