Lubrication-free electrodynamic drive for operating shutter valve of vacuum pump utilized in e.g. industrial application, has control electronics controlled by cable guided into magnetic pot, where pot is closed on side of electronics

摘要

The drive has a permanent magnet (5) arranged in an upper recess of a magnetic pot (1). A working coil (6) is arranged on circumference of a coil body (9) and arranged in a compressed air gap (8) such that the coil is not connected with outer walls of a pole core (7). The body encloses the core, and a damping element (11) is arranged on the core. A control electronics (3) is connected with the coil over a supply line and controlled by a control cable (12) that is guided into the magnetic pot through an opening, where the magnetic pot is closed outwardly on a side of the control electronics.