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:
Feb. 01, 2011
Filed:
Apr. 18, 2007
Arno Karwath, Deisslingen, DE;
Arno Karwath, Deisslingen, DE;
EBM-Papst St. Georgen GmbH & Co. KG, St. Georgen, DE;
Abstract
An electrically driven fan arrangement, suitable for energy-conserving installations, includes a fan, an electric motor () serving to drive the fan, and associated control apparatus, namely: a sensing apparatus () for sensing a volumetric air flow rate () generated by the fan () and for generating a measured volumetric air flow value (Vmess), and a volumetric flow rate control arrangement () for automatically controlling the volumetric air flow rate () generated by the fan () to a predetermined target volumetric air flow value (V_s). The volumetric flow rate control arrangement () is configured to generate a target rotation speed value (N_s) for the electric motor (). A rotation speed controller (), which automatically controls the rotation speed of the electric motor () to the target rotation speed rate (N_s) generated by the volumetric flow rate control arrangement (), is also provided.