Flow machine, especially centrifugal pump, with magnetic coupling drive has variable hysteresis coupling arranged between drive motor in form of polyphase asynchronous motor and flow machine

摘要

The machine has an electric drive motor (3) that transfers torque via a magnetic coupling to a shaft of the flow machine (1). The coupling has axial rotors in the form of an outer rotor (10) enclosing an inner rotor (9). A variable hysteresis coupling (2) is arranged between a drive motor in the form of a polyphase asynchronous motor and the flow machine.