Patent ID: 8920740

Claim:
An atmospheric pressure plasma jet device, comprising: an inner electrode, made of a conductive metal, and having an insulating layer, the insulating layer covering a portion of the inner electrode; a first conductive metal wall, surrounding the inner electrode with a predetermined distance apart, such that a cavity being formed between the inner electrode and the first conductive metal wall; a through hole being formed on a side of the first conductive metal wall, and a reactant flowing into the cavity via the through hole, and the reactant reacting with the atmospheric pressure plasma generated in the cavity, and the reactant being converted into at least one organic product in the cavity; and a diffusing unit disposed opposite to the through hole, the diffusing unit surrounding the inner electrode including an insulating component and a conductive metal component, the insulating component being disposed on a side of the insulating layer, and the insulating component covering another portion of the inner electrode, and the conductive metal component further covering the insulating component without contacting with the insulating layer and the first conductive metal wall such that the first conductive metal wall surrounds the conductive metal component with an interval apart; wherein, when the reactant flows into the cavity via the through hole, the diffusing unit prevents a direct impact from the reactant toward the inner electrode, and the organic products is discharged stably by a laminar flow method after the reactant flows into the cavity.