US Patent 11541849 Cleaning device, compressed air system, cleaning method

A cleaning device for selectively bombarding a surface with a media sequence, the sequence including at least a first gaseous medium and a second liquid medium, includes a nozzle configured to bombard the surface with the second medium; a cleaning valve with a holding port, a pressure port, a plunger, and a pressure outlet; and a high-pressure accumulator configured to store the first medium. The first medium is loaded with an accumulator pressure. The cleaning device further includes a changeover valve configured to selectively create a connection between a first medium supply line and a holding line connected to the holding port. The pressure outlet is configured to bombard the surface with the first medium in pulse-like fashion.