Abstract: The present invention provides a fan installation for a cooling system of a motor vehicle, comprising at least two fans which respectively have an electric fan motor arranged in a separate housing and a fan wheel which can be driven by the fan motor. The fan installation also comprises a control unit for operating the fan motors. The invention provides for an improved fan installation with a simple and cost-effective design, which is achieved by arranging the control unit in the housing of one of the fans for operating both fan motors.

Abstract: The invention relates to an electric fan, in particular, for motor vehicles, comprising an electric drive motor, a fan wheel coupled with the drive motor, and an electronic control unit for controlling the motor. In order to make the electric fan structurally more simple and more cost-effective to assemble, it is proposed that the drive motor and the control unit be arranged in a common housing, and that the housing have air vents for passage of a flow of cooling air generatable by the fan wheel, and a heat sink of the control unit be arranged at at least one air vent.

Abstract: To improve a control circuit for at least one inductive load, comprising a first load branch, which lies between a first voltage terminal and a second voltage terminal and comprises an electronic switch and the inductive load connected in series, the electronic switch lying between a first terminal of the inductive load and the first voltage terminal, and a second terminal of the inductive load being in connection with the second voltage terminal, a freewheeling diode, via which a freewheeling current of the inductive load flows when the electronic switch is open, in such a way that smallest possible fluctuations of the supply current and smallest possible voltage peaks occur at the voltage terminals, it is proposed that there is provided a freewheeling branch which has, as a series connection, a capacitance connected to the first voltage terminal and an inductance connected to the second terminal of the inductive load, and also a freewheeling diode lying between a center tap between the capacitance and the i

Abstract: To improve a control circuit for at least one inductive load, comprising a first load branch, which lies between a first voltage terminal and a second voltage terminal and comprises an electronic switch and the inductive load connected in series, the electronic switch lying between a first terminal of the inductive load and the first voltage terminal, and a second terminal of the inductive load being in connection with the second voltage terminal, a freewheeling diode, via which a freewheeling current of the inductive load flows when the electronic switch is open, in such a way that smallest possible fluctuations of the supply current and smallest possible voltage peaks occur at the voltage terminals, it is proposed that there is provided a freewheeling branch which has, as a series connection, a capacitance connected to the first voltage terminal and an inductance connected to the second terminal of the inductive load, and also a freewheeling diode lying between a center tap between the capacitance and the i

Abstract: The present invention provides a fan installation for a cooling system of a motor vehicle, comprising at least two fans which respectively have an electric fan motor arranged in a separate housing and a fan wheel which can be driven by the fan motor. The fan installation also comprises a control unit for operating the fan motors. The invention provides for an improved fan installation with a simple and cost-effective design, which is achieved by arranging the control unit in the housing of one of the fans for operating both fan motors.

Abstract: The invention relates to an electric fan, in particular, for motor vehicles, comprising an electric drive motor, a fan wheel coupled with the drive motor, and an electronic control unit for controlling the motor. In order to make the electric fan structurally more simple and more cost-effective to assemble, it is proposed that the drive motor and the control unit be arranged in a common housing, and that the housing have air vents for passage of a flow of cooling air generatable by the fan wheel, and a heat sink of the control unit be arranged at at least one air vent.

Abstract: The invention relates to an electric drive, in particular, for a fan of a motor vehicle, comprising an electric drive motor and an electronic control unit for controlling the drive motor. The drive motor comprises a commutator and associated power supply devices rubbing on the commutator, and the control unit comprises an electronic module arranged on a printed circuit board. In order to design the electric drive so that it is of simpler construction and more cost-effective to assemble, it is proposed that the drive motor and the control unit be arranged in a common housing, with the power supply devices held on the printed circuit board. The invention also relates to an electric fan with an electric drive of this kind.