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. 25, 2025
Filed:
Mar. 29, 2023
Applicant:
Daikin Industries, Ltd, Osaka, JP;
Inventors:
Zuozhou Chen, Osaka, JP;
Ryusuke Otaguro, Osaka, JP;
Anan Takada, Osaka, JP;
Kaname Maruyama, Osaka, JP;
Assignee:
DAIKIN INDUSTRIES, LTD, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/66 (2006.01); F04D 19/00 (2006.01); F04D 29/54 (2006.01);
U.S. Cl.
CPC ...
F04D 29/667 (2013.01); F04D 19/002 (2013.01); F04D 29/541 (2013.01);
Abstract
A bell mouth includes a circumferential wall, and a pressure changing component permeable portion arranged in the circumferential wall at a location where a separated distance from an axial fan is minimal. A fan unit includes the bell mouth, an axial fan, and a case that accommodates the axial fan and the bell mouth. The fan unit has an air layer between the circumferential wall of the bell mouth and the case.