Patent ID: 7472850

Claim:
An ultrasonic standing-wave atomizer arrangement for producing a paint spray mist for painting a workpiece, with a sonotrode, with a component arranged lying opposite the sonotrode, a standing ultrasonic field being formed in the intermediate space between the at least one sonotrode and the component in the case of operation, and also with at least one nozzle-shaped paint feeding device, which is arranged perpendicularly in relation to a center axis of the sonotrode and introduces the paint into the intermediate space for the atomizing process at least one paint discharge point, wherein the component arranged lying opposite the sonotrode is a coaxially aligned reflector, wherein the end face of the latter, facing the sonotrode, has a step-shaped recessed formation and wherein the depth of the recessed formation corresponds to a multiple of half a wavelength λ of sonic vibrations in air that are produced in the sonotrode.