Patent ID: 8342822

Claim:
A suction device for dental, medical and industrial purposes comprising: a radial fan which exhibits a suction side and a pressure side; a centrifugal separator, an air outlet of which is connected to the suction side of the radial fan; at least one drive unit which includes an electric motor and serves for driving the radial fan and the centrifugal separator; and, a control unit for the drive unit, wherein the drive unit includes a fan drive motor and a separator drive motor, which are arranged in series, rotationally decoupled, and drive the radial fan and the centrifugal separator, respectively, and wherein the fan drive motor and the separator drive motor have a common axle which is fixed with respect to a housing, and the fan drive motor includes a stator which is seated on a peripheral surface of the common axle, and the separator drive motor has a stator which is fastened to a radial outside of a carrying socket which is fastened to the common axle, and the fan drive motor includes a rotor with bearings and the separator drive motor includes a rotor with bearings and wherein the fan drive motor bearings and the separator drive motor bearings are carried by the common axle.