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. 31, 2019
Filed:
Oct. 20, 2015
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Kazuki Doumoto, Aichi, JP;
Tsuraki Nakajima, Aichi, JP;
Harumoto Itou, Aichi, JP;
Yuusuke Urata, Aichi, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 27/00 (2006.01); H02P 27/06 (2006.01); F24F 11/77 (2018.01); F24F 11/74 (2018.01); H02P 6/18 (2016.01); F04D 25/08 (2006.01);
U.S. Cl.
CPC ...
F04D 27/004 (2013.01); F24F 11/74 (2018.01); F24F 11/77 (2018.01); H02P 6/18 (2013.01); H02P 27/06 (2013.01); F04D 25/08 (2013.01);
Abstract
A ventilation device includes AC voltage estimation unit () for estimating an AC voltage, based on a DC voltage detected by voltage detection unit () and a current detected by current detection unit (). Air volume computation unit () determines a rotation speed of a motor, based on the AC voltage estimated by AC voltage estimation unit () and a target air volume output from a target air volume computation unit.