Patent ID: 8264176

Claim:
A fan arrangement having a fan ( 24 ) driven by an electric motor ( 22 ), which fan arrangement ( 20 ) comprises: an apparatus for detecting the electrical power (P IST ) consumed by the electric motor ( 22 ) during operation; an input apparatus ( 28 ) with a control input ( 45 ) for inputting a desired rotation speed (n SOLL ) of said electric motor; a converter ( 26 ) for converting said desired rotation speed (n SOLL ) into a desired electrical power (P SOLL ) ; a controller ( 44 ), which regulates said control input ( 45 ) controlling the electric motor ( 22 ) in such a way that the difference between the electrical power (P IST ) consumed in operation and the desired electrical power (P SOLL ) is reduced, in order thereby to improve the air output characteristic curve of the fan arrangement ( 20 ) at least in a portion of the overall operating range.