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. 11, 2012
Filed:
Nov. 17, 2008
Markus Gutmann, March, DE;
Arno Karwath, Deisslingen, DE;
Thomas Dufner, Schonach, DE;
EBM-Papst St. Georgen GmbH & Co. KG., St. Georgen, DE;
Abstract
A fan arrangement () has a fan () driven by an electric motor (), also an apparatus for detecting the electrical power (P) consumed by the electric motor () during operation; an input apparatus () for inputting a desired rotation speed (n) of said electric motor (); a converter () for converting said desired rotation speed (n) into a desired electrical power (P); and a controller (), which regulates the control input controlling the electric motor () in such a way that the difference between the electrical power (P) consumed in operation and the desired electrical power (P) is reduced, in order thereby to improve the air output characteristic curve () of the fan arrangement () at least in a portion of the overall operating range.