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. 05, 2018
Filed:
Jan. 21, 2016
Applicant:
Lg Electronics Inc., Seoul, KR;
Inventors:
Assignee:
LG ELECTRONICS INC., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/28 (2006.01); F04D 29/66 (2006.01); F04D 29/68 (2006.01);
U.S. Cl.
CPC ...
F04D 29/666 (2013.01); F04D 29/281 (2013.01); F04D 29/667 (2013.01); F04D 29/681 (2013.01);
Abstract
A centrifugal fan having improved efficiency and noise reduction includes a hub configured to have a central part combined with a rotary shaft, a shroud spaced apart from the hub, and a plurality of blades provided between the hub and the shroud. The shroud includes outer circumferential parts each connecting the trailing edges of a plurality of respective adjacent blades. Each outer circumferential part is asymmetrically formed based on the center of the outer circumferential part.