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.

Date of Patent:
Sep. 11, 2018

Filed:

Dec. 16, 2011
Applicants:

Markus Engert, Lauda-Lönigshofen, DE;

Erik Reichert, Boxberg, DE;

Oliver Haaf, Kupferzell, DE;

Christian Pfaff, Künzelsau, DE;

Marc Schneider, Dörzbach, DE;

Jürgen Schöne, Bad Mergentheim, DE;

Katrin Bohl, Künzelsau, DE;

Sven Beck, Krautheim, DE;

Dieter Best, Ingelfingen, DE;

Tobias Ehmann, Neuenstein, DE;

Alexander Frank, Pfedelbach, DE;

Erhard Gruber, Satteldorf, DE;

Matthias Maschke, Kupferzell, DE;

Thomas Sauer, Bad Mergentheim, DE;

Inventors:

Markus Engert, Lauda-Lönigshofen, DE;

Erik Reichert, Boxberg, DE;

Oliver Haaf, Kupferzell, DE;

Christian Pfaff, Künzelsau, DE;

Marc Schneider, Dörzbach, DE;

Jürgen Schöne, Bad Mergentheim, DE;

Katrin Bohl, Künzelsau, DE;

Sven Beck, Krautheim, DE;

Dieter Best, Ingelfingen, DE;

Tobias Ehmann, Neuenstein, DE;

Alexander Frank, Pfedelbach, DE;

Erhard Gruber, Satteldorf, DE;

Matthias Maschke, Kupferzell, DE;

Thomas Sauer, Bad Mergentheim, DE;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/54 (2006.01); F04D 29/66 (2006.01); F04D 19/00 (2006.01);
U.S. Cl.
CPC ...
F04D 29/541 (2013.01); F04D 19/002 (2013.01); F04D 29/547 (2013.01); F04D 29/664 (2013.01); F05D 2250/121 (2013.01);
Abstract

A diffuser () for a fan () of axial, radial or diagonal type of construction, has an inlet opening () and having an outlet opening () for a gaseous medium which flows through a diffuser interior (I), which is enclosed by an outer housing (), in an axially oriented main flow direction (S) from the inlet opening () to the outlet opening (). The cross section of the diffuser interior (I) increases from the cross section () of the inlet opening to the cross section () of the outlet opening (), wherein the outer housing () forms an outer diffuser part (AD) which delimits the diffuser interior (I) to the outside. Along the main flow direction (S), the cross section of the outer diffuser part (AD) changes from a circular cross section () at the inlet opening () to a non-circular cross section () at the outlet opening ().


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