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:
Sep. 26, 2023
Filed:
Mar. 09, 2020
Applicant:
Ziehl-abegg SE, Künzelsau, DE;
Inventors:
Frieder Loercher, Braunsbach, DE;
Alexander Herold, Hardthausen, DE;
Assignee:
ZIEHL-ABEGG SE, Künzelsau, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F04D 27/00 (2006.01); F04D 17/16 (2006.01); G01F 1/80 (2006.01); G01F 1/10 (2006.01); G01F 1/84 (2006.01); G01F 1/11 (2006.01); G01F 1/90 (2006.01); G01F 1/12 (2006.01); G01F 1/82 (2006.01); F04D 29/28 (2006.01); F04D 29/42 (2006.01); F04D 19/00 (2006.01); F04D 29/52 (2006.01); F04D 25/06 (2006.01); F24F 110/30 (2018.01);
U.S. Cl.
CPC ...
F04D 27/001 (2013.01); F04D 17/16 (2013.01); F04D 19/002 (2013.01); F04D 25/0666 (2013.01); F04D 27/00 (2013.01); F04D 27/004 (2013.01); F04D 29/281 (2013.01); F04D 29/4213 (2013.01); F04D 29/4226 (2013.01); F04D 29/526 (2013.01); G01F 1/10 (2013.01); G01F 1/103 (2013.01); G01F 1/11 (2013.01); G01F 1/12 (2013.01); G01F 1/125 (2013.01); G01F 1/80 (2013.01); G01F 1/82 (2013.01); G01F 1/8454 (2013.01); G01F 1/90 (2013.01); F24F 2110/30 (2018.01);
Abstract
A fan, in particular axial fan and preferably backward-curved radial fan, having an impeller equipped with blades, an electric motor for rotating the impeller and a device for determining the airflow when the impeller is rotating. The device for determining the airflow includes a volume flow measuring wheel arranged in the air flow, which is arranged upstream of the impeller on the inflow side. The air volume flow is calculated or derived from the rotational speed of the volume flow measuring wheel.