Device for Generating an Atmospheric Plasma Jet for Treating a Surface of a Workpiece

An apparatus for generating an atmospheric plasma jet for treating a surface of a workpiece

• with a plasma nozzle which is configured to generate an atmospheric plasma jet,
• wherein the plasma nozzle comprises at least two electrodes,
• wherein the plasma nozzle is configured to generate the atmospheric plasma jet by means of an arc-like discharge in a working gas, the arc-like discharge being generated by applying a high-frequency high voltage between the electrodes,
• wherein the plasma nozzle has a nozzle arrangement with a nozzle opening for discharging a plasma jet to be generated in the plasma nozzle, and
• wherein the nozzle arrangement is rotatable about an axis of rotation,
• wherein
• the nozzle opening has a cross-section with a shape differing from a circular shape,
• the nozzle opening has a cross-section which tapers in a radial direction with respect to the axis of rotation and/or which has a larger extension in the radial direction with respect to the axis of rotation that transversely thereto.