Arc plasma generator

Abstract

The arc plasma generator comprises a cathode assembly and an anode assembly, and the cathode assembly and the anode assembly are coaxially and oppositely arranged. The cathode in the cathode assembly and the anode in the anode assembly have the same structure; a cathode swirl gas ring in the cathode assembly and an anode swirl gas ring in the anode assembly are consistent in boundary dimension, a plurality of swirl gas holes are uniformly distributed in the circumferential directions of cathode swirl gas holes and anode swirl gas holes, the number of the swirl gas holes is the same, and the swirl directions of airflow guiding of the anode swirl gas holes and the cathode swirl gas holes are opposite; n cascading parts are arranged between the cathode assembly and the anode assembly, n is a natural number larger than or equal to 1, and insulating plates are arranged between the cathode assembly and the cascading parts, between the cascading parts and between the cascading parts and the anode assembly. Through the ingenious structural design of arc discharge of a group of cathodes and anodes, the plasma jet can be generated in the direction perpendicular to an arc column.

Description

technical field [0001] The invention relates to the technical field of plasma sources, in particular to an arc plasma generator. Background technique [0002] Atmospheric pressure plasma jets have a wide range of applications in material surface treatment, sterilization, and deposition of thin films and coatings. However, the mean free path of plasma generated under atmospheric pressure is much smaller than that of plasma generated under low pressure. The size of atmospheric pressure plasma is small, which limits its application. Therefore, the development of large-area uniform atmospheric pressure plasma generation technology is very urgent for expanding the application of atmospheric pressure plasma. [0003] Chinese patent ZL201510058076.4 (a device and method for uniformly treating aqueous solution by a plasma jet array), and Chinese patent CN210432007U (a device for generating atmospheric jets with multi-jet array gun nozzles), are formed by using a plurality of plasma...

AI Technical Summary

Problems solved by technology

[0004] However, the generation of these multi-array plasma jets generally requires multiple gas sources and multiple power sources to drive, which increases the cost of the equipment and the complexity of the system. If it is driven by a single power source, the plasma discharge of multiple jets has the problem of poor consistency.

Large-scale arc plasma generated by magnetic rotation, at a certain point in time, the arc only exists at a certain position, and its uniformity is worse for large-scale discharge spaces

Images