US Patent 11787370 Cleaning device, compressed-air system, vehicle and cleaning method

A cleaning device for selectively bombarding a surface with a first medium, including an accumulator valve module having a high-pressure accumulator configured to store the first medium at a high-pressure accumulator pressure, an impulse nozzle configured to bombard the surface with the first medium, a changeover valve having a nozzle connector configured to connect to the impulse nozzle and a high-pressure accumulator connector configured to connect to the high-pressure accumulator, wherein the changeover valve is configured to: connect, in a release position, the high-pressure accumulator and the impulse nozzle via the high-pressure accumulator connector and the nozzle connector, interrupt, in a charge position, a flow path from the high-pressure accumulator to the impulse nozzle, and switch between the release position and the charge position. The cleaning device includes a high-pressure accumulator holding valve connecting the high-pressure accumulator to the first medium source.