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:
Apr. 13, 2021
Filed:
Apr. 25, 2016
Applicant:
Ziehl-abegg SE, Künzelsau, DE;
Inventors:
Tobias Gauss, Niedernhall, DE;
Daniel Seifried, Schwäbisch Hall, DE;
Achim Kaercher, Forchtenberg, DE;
Andreas Herbert, Mulfingen, DE;
Assignee:
Ziehl-Abegg SE, Kunzelsau, DE;
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/54 (2006.01); F04D 19/00 (2006.01); F04D 29/42 (2006.01); F04D 17/16 (2006.01); F04D 29/68 (2006.01); F04D 29/32 (2006.01); F04D 29/66 (2006.01);
U.S. Cl.
CPC ...
F04D 29/541 (2013.01); F04D 17/16 (2013.01); F04D 19/002 (2013.01); F04D 29/325 (2013.01); F04D 29/4213 (2013.01); F04D 29/547 (2013.01); F04D 29/665 (2013.01); F04D 29/681 (2013.01); F05D 2250/51 (2013.01);
Abstract
An inlet nozzle () for a radial, diagonal or axial-flow fan, comprising an inlet section () that is circular in cross-section, has a radius of curvature, and tapers in diameter in the direction of flow (), characterized by the presence of a measure or a flow element on or in the curved surface () of the inlet section for the purpose of forcing turbulent boundary layers in the flow, which can counteract a stall in this region. A radial, diagonal or axial-flow fan comprises a corresponding inlet nozzle ().