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Large-atmosphere low-temperature plasma fluidic generator

A low-temperature plasma and jet generator technology, applied in the direction of plasma, electrical components, etc., can solve problems such as difficulty in practical application, and achieve the effect of solving practicality and improving safety

Active Publication Date: 2015-05-27
TSINGHUA UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a practical atmospheric pressure low-temperature plasma jet generator to overcome the defects that the prior art is still at the level of principle structural design and difficult to be practical

Method used

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Embodiment Construction

[0035] The discharge principle mainly adopted by the jet generator is double-dielectric barrier discharge, which is mainly composed of inner and outer electrodes, in which the inner electrode 16 is a tungsten rod, and the upper and lower ends are semicircular; the outer electrode 3 is a thin copper made of red copper. Two layers of quartz glass tubes are used to separate the two electrodes, which are the outer quartz glass tube 1 and the central quartz glass tube 14; the discharge is generated in the area between the two quartz glass tubes in the electrode area, using the flow of air flow and electric field The effect is to make the plasma generated in the discharge area eject from the nozzle, and make a directional flow towards the working area in the external gas environment without solid boundary constraints to form a plasma jet. The frequency of the inner electrode 16 is 10kHz~30kHz, and the AC voltage is 5kV ~20kV high-voltage alternating current, the outer electrode 3 is ...

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Abstract

The invention discloses a large-atmosphere low-temperature plasma fluidic generator, and belongs to the technical field of medium baffle discharge plasma. The large-atmosphere low-temperature plasma fluidic generator is characterized in that an electrode part consists of an inner electrode which is connected with a high-voltage end and arranged inside a capillary glass tube, and an earthing electrode which coaxially sleeves the outer circumference of the glass tube; a shell part consists of an outer wall, an electrode support sleeve and a wiring fixing sleeve which are connected from bottom to top; a power supply access part consists of a high-voltage electrode plug and a very low-voltage electrode plug which are embedded into the upper end surface of the wiring fixing sleeve; the high-voltage electrode plug consists of a high-voltage conduction block which is fixed between the lower end surface of the wiring fixing sleeve and the upper end surface of the electrode support sleeve, and a spring which is wound on the inner electrode and has a conductive function; the earthing wire on an outer electrode is connected with an earth wire fixing end surface through the shell and a wire groove inside the wiring fixing sleeve, and is connected with an earthing electrode plug; an air inlet part consists of an air inlet tube which is embedded into the upper end surface of the earthing electrode plug. Therefore, the use security reliability is improved while the practical application purpose is achieved.

Description

technical field [0001] An atmospheric pressure low temperature plasma jet generator belongs to the technical field of atmospheric pressure dielectric barrier discharge plasma. Background technique [0002] The atmospheric pressure low temperature plasma jet generator is a new atmospheric pressure low temperature plasma discharge technology that has emerged in recent years. The plasma generated in the discharge area is ejected from the nozzle or orifice by the action of the air flow and the electric field, and is constrained by no solid boundary. The plasma jet is formed by directional flow towards the working area in the external gas environment, and is widely used in aerospace, environment, biomedicine, material surface treatment, food preservation, disinfection and sterilization, wastewater treatment and other fields. There are many kinds of atmospheric pressure and low temperature plasma jet sources. Among them, the atmospheric pressure low temperature plasma jet technolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/24
Inventor 李和平孙智兴聂秋月包成玉
Owner TSINGHUA UNIV
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