Patent ID: 6841901

Claim:
An electrical machine, in particular an alternator for a motor vehicle, comprising: a housing ( 2 ); a rotor ( 6 ) that is supported in the housing ( 2 ) in a manner that allows it to rotate around an axis of rotation ( 5 ), said rotor ( 6 ) having at least one rotor winding ( 14 ); at least one fan wheel ( 21 ) mounted on the rotor ( 6 ) for generating convection in the housing ( 2 ) and for dissipating heat from the at least one rotor winding ( 14 ), the at least one fan wheel ( 21 ) and the rotor ( 6 ) are joined using welding at least along an arc in order to direct heat away from the rotor ( 6 ) to the fan wheel ( 21 ).