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:
Aug. 26, 2014
Filed:
Nov. 13, 2007
Ernst Claussen, Steinfeld, DE;
Joachim Peetz, Ascheffel, DE;
Gerd Wegner, Eckernförde, DE;
Ralph Seitter, Backnang, DE;
Lutz Bauer, Spiegelberg, DE;
Ernst Claussen, Steinfeld, DE;
Joachim Peetz, Ascheffel, DE;
Gerd Wegner, Eckernförde, DE;
Ralph Seitter, Backnang, DE;
Lutz Bauer, Spiegelberg, DE;
Punker GmbH, Eckernforde, DE;
Alfred Karchner GmbH & Co. KG, Winnenden, DE;
Abstract
A centrifugal fan with a pot-like impeller and with a housing, having a first circumferential wall region with an arc-like curvature which extends directly along the impeller. The housing includes in a direction of rotation of the impeller a second circumferential region with a radial distance from the impeller increasing spirally up to an outlet region. The housing includes in an opposite direction a third circumferential wall region extending to the outlet region, having an S-curvature and including a sub-region curved in the same direction as the first circumferential wall region forming a flow baffle element. Two side walls cover the axial end faces of the impeller wherein one of the side walls extends into the pot-like impeller and divides its interior into a first suction chamber having an intake and a second suction chamber. The outlet region expands in cross-section in the outlet flow direction.