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:
Nov. 22, 2022
Filed:
Sep. 18, 2019
Carrier Corporation, Palm Beach Gardens, FL (US);
Chang Luo, Shanghai, CN;
Yuling Shi, Shanghai, CN;
XiuHong Jiang, Shanghai, CN;
Wei Zheng, Shanghai, CN;
CARRIER CORPORATION, Palm Beach Gardens, FL (US);
Abstract
The invention relates to a fan housing (), a fan and an operating system having a fan. The fan housing () has a volute shape and includes a volute tongue () and a cavity () between an air inlet and an air outlet, the volute tongue is provided with a protrusion () configured to extend in a direction substantially parallel to an axial direction of an impeller mounted in the cavity and has at least one peak () in a longitudinal section of the fan housing, and the peak is opposed to an annular projection () located at the circumferential outer surface of the impeller. The use of the invention can effectively reduce the noise level during the operation of the fan and improve fan performance, thereby considerably improving users' comfort and satisfaction.