ELECTRIC MOTOR WITH FUNCTIONAL MONITORING OF THE MOTOR BEARINGS
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Abstract
The present invention relates to an electric motor, comprising a stator and a rotor that can rotate relative to the stator and that is mounted in bearing arrangements, and also comprising a motor housing and a vibration sensor to pick up vibrations that occur in the electric motor and that are caused by malfunctions of the bearing arrangements. The configuration provided here is that of an external-rotor motor. The stator has a bearing support tube that is connected at one end to a ring-shaped stator flange. Bearing arrangements are arranged at a distance from each other in the bearing support tube in the direction of a center longitudinal axis of the bearing support tube, in which a shaft of the rotor is supported. The vibration sensor is attached to the stator flange.
8 Citations
11 Claims
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1-10. -10. (canceled)
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11. An electric motor, comprising a stator and a rotor that can rotate relative to the stator and that is mounted in bearing arrangements, and also comprising a motor housing and a vibration sensor to pick up vibrations that occur in the electric motor and that are caused by malfunctions of the bearing arrangements, characterized by its configuration as an external-rotor motor, whereby the stator has a bearing support tube that is connected at one end to a ring-shaped stator flange, and bearing arrangements that are arranged at a distance from each other in the bearing support tube in the direction of a center longitudinal axis of the bearing support tube, in which a shaft of the rotor is supported, and the vibration sensor is attached to the stator flange, whereby the vibration sensor is attached directly to a free surface of the stator flange that immediately adjoins the bearing support tube in the radial direction relative to the longitudinal axis, and whereby the stator flange and the bearing support tube are configured in one piece.
Specification