Device for medium to block discharging plasma body jet current

Abstract

The invention relates to a dielectric barrier discharge plasma body jet device, which belongs to the plasma body generator. The purpose of the invention is to generate long-distance and micro-thermal plasma body jet contained with enough active ingredient, the position of electrode is safe, and the invention is suitable for the discharging of a plurality of gases. The invention comprises a working gas source, a power source, a high voltage electrode and a medium tube; the medium tube is a hollow tube which is communicated with working gas source; the high voltage electrode is embedded in the tube wall of the medium tube and connected with the power source; when the high voltage electrode is suited on the outside of the medium tube, the high voltage electrode and the medium tube are located in a protecting sleeve. The invention has the advantages of easy producing, convenient maintenance, safe and convenient use, and wide working gas range; the temperature, the length, the thickness and the amount of the plasma body jet can be adjusted according to the practical application, the application range of the plasma body technology is further expanded and the application effect is improved.

Description

Technical field [0001] The invention belongs to a plasma generating device, and particularly relates to a dielectric barrier discharge plasma jet device. Background technique [0002] In the prior art, generally speaking, there are two types of discharge plasma sources: one is low pressure plasma; the other is atmospheric pressure plasma, such as corona discharge, dielectric barrier discharge, etc. There are other classification methods: according to the relationship between plasma temperature and electron temperature, it is divided into balanced plasma and non-equilibrium plasma; according to the plasma temperature, it is divided into high and low temperature plasma, and they have different characteristics and performances. The application is also different. The existing plasma jet devices are mainly divided into the following four types: [0003] (1) AC non-equilibrium plasma jet device [0004] As shown in Figure 1, Yong Cheol Hong et al. "Microplasma jet at atmospheric pressu...

AI Technical Summary

Problems solved by technology

The disadvantage of this device is that the high-voltage electrode 3 is exposed in the external space and is in direct contact with the plasma jet 5, which is not safe for specific applications.

Although there is a dielectric between the high-voltage electrode 3 and the ground electrode 15, due to the close distance, the gap is 0.3 to 1 cm, and arc discharge is prone to occur between the ring holes under high voltage, which is not safe for specific applications.

[0012] As mentioned above, the existing devices all have similar deficiencies, such as: the high-voltage electrodes are improperly placed, and some are exposed directly or partly at the top in the external space, and are in direct contact with the plasma jet; The distance is relatively short, there is a direct connection path in the space, and arc discharge is prone to occur under high voltage; the discharge working gas source is single or can only be a mixed gas mixed with other gases, and the type and quantity of active components in the plasma jet are few; the generated plasma The jet length is short, the temperature is high, and it is difficult to achieve large-scale and large-scale specific applications

These factors have greatly limited the wide application of existing plasma jet technology and devices.

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