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:
Dec. 21, 2021
Filed:
Jan. 04, 2019
Applicant:
Nidec Corporation, Kyoto, JP;
Inventors:
Zhaowu Gu, Kyoto, JP;
Atsushi Michishita, Kyoto, JP;
Assignee:
NIDEC CORPORATION, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/70 (2006.01); F04D 25/06 (2006.01); F04D 29/42 (2006.01);
U.S. Cl.
CPC ...
F04D 29/706 (2013.01); F04D 25/06 (2013.01); F04D 25/0613 (2013.01); F04D 29/4226 (2013.01); F05B 2240/14 (2013.01); F05B 2260/602 (2013.01); F05D 2260/602 (2013.01); F05D 2260/605 (2013.01); F05D 2260/608 (2013.01);
Abstract
A centrifugal fan includes a water outlet connecting an interior and an exterior of a housing at a position closer to a radially inner side than an impeller such that liquid at a bottom of the housing is able to be discharged quickly, and accumulation of the liquid is avoided, to ensure normal operation of the centrifugal fan.