Method and device for the treatment of surfaces

Details Method and device for the treatment of surfaces Method and device for the treatment of surfaces

H - Electricity

05

H

H05H 1/24 (2006.01)

Patent

CA 2705725

The invention relates to a device and a method for the treatment of surfaces with a plasma produced under atmospheric pressure. The device according to the invention is formed as a portable handheld unit and comprises a plasma nozzle (16) for producing a plasma jet (18), which comprises a nozzle opening (17) and at least one electrode and counter-electrode pair (27, 28) arranged upstream of the nozzle opening, the effective electrode surfaces of which pair of electrodes each have a dielectric coating (29, 30), the electrode (27) and the counter-electrode (28) defining between them a working space (34) in which a working gas can be at least partially ionized by means of a dielectric barrier gas discharge, a high-voltage generator (19, 20), which is electrically connected to the electrode and counter-electrode pair (27, 28), a feeding means (15), which produces a gas flow of the working gas from a working gas source into the working space (34) and through the nozzle opening (17), the working gas source being ambient air, and a mains-independent energy source (12) for supplying the high-voltage generator (19, 20) and the feeding means (19).

La présente invention concerne un dispositif et un procédé de traitement de surfaces par plasma à pression atmosphérique. Le dispositif selon l'invention est conçu comme un appareil mobile transportable et comprend une buse à plasma (16) qui est destinée à produire un faisceau plasma (18) et comprend une ouverture de buse (17) et une ou plusieurs paires d'électrode et de contre-électrode (27, 28) qui sont disposées en amont de l'ouverture de buse et dont les surfaces d'électrodes actives présentent chacune un revêtement diélectrique (29, 30), l'électrode (27) et la contre-électrode (28) définissant entre elles un espace de travail (34), dans lequel une décharge de gaz inhibée diélectriquement permet d'ioniser au moins partiellement un gaz utile; un générateur haute tension (19, 20) relié électriquement à la paire d'électrode et de contre-électrode (27, 28); un moyen d'acheminement (15) qui fournit un flux de gaz du gaz utile à partir d'une source de gaz utile dans l'espace de travail (34) et à travers l'ouverture de buse (17), la source de gaz utile étant l'air ambiant; et une source d'énergie (12) indépendante du réseau pour alimenter le générateur haute tension (19, 20) et le moyen d'acheminement (19).

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