Syringe type atmospheric-pressure micro-plasma generator

A micro-plasma, syringe-type technology, applied in the direction of plasma, electrical components, etc., can solve the problems of limiting the development of plasma application technology, high plasma gas flow, and staying in the treatable range, and achieves simple discharge method and gas flow rate. The effect of low and low equipment cost

Active Publication Date: 2012-06-13
DALIAN NATIONALITIES UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The plasma gas flow rate generated by the traditional dielectric barrier discharge method is high, the penetration is poor, and the treatable range stays on the surface of the material, which limits the development of plasma application technology
So far, there are few reports on micro-injection atmospheric pressure low-temperature plasma generation technology

Method used

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  • Syringe type atmospheric-pressure micro-plasma generator
  • Syringe type atmospheric-pressure micro-plasma generator
  • Syringe type atmospheric-pressure micro-plasma generator

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the drawings.

[0023] A syringe type atmospheric pressure micro plasma generator, such as figure 1 As shown, a copper core is used as the high-voltage electrode 1 to be inserted into the microporous optical fiber 2, connected to the AC high-voltage power supply, the upper end of the syringe 3 is closed and connected to the air inlet pipe 6, the optical fiber passes through the lower end of the syringe and is wrapped inside the ceramic needle 4, using copper sheets Place the ground electrode 5 in the sample to ground. Wherein, the outer diameter of the microporous fiber is 1mm and the inner diameter is 50μm; the outer diameter of the ceramic needle is 1.6mm and the length is 30mm; the diameter of the high-voltage electrode is 50μm; the frequency of the high-voltage power supply is 5-15KHz, Its peak-to-peak value is 6~35KV;

[0024] When discharging, the discharge gas passes through the mass flow contr...

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Abstract

The invention relates to a syringe type atmospheric-pressure micro-plasma generator which comprises a alternating-current high-voltage power supply, a high-voltage electrode, a ground electrode and a micro-hole optical fiber, wherein the lower end of the micro-hole optical fiber is closed, the high-voltage electrode is inserted in the micro-hole optical fiber, and a needle cylinder is sleeved on the micro-hole optical fiber; the upper end of the needle cylinder is sealed and is connected with an air inlet tube; the lower end of the needle cylinder is connected with a needle head made of insulating material; the lower end of the optical fiber is wrapped in the needle head, and a gap through which air passes is reserved between the optical fiber and the needle head; and the ground electrode is earthed and arranged in a to-be-processed sample. The syringe type atmospheric-pressure micro-plasma generator provided by the invention is simple in electro-discharge mode, low in equipment cost, small in air volume, low in air flow, and low in energy consumption; and the micro-plasma generator can feed gas in a liquid sample so as to obtain plasmas, and is used for processing the insides of materials or processing internal tissues of human bodies.

Description

Technical field [0001] The invention relates to an atmospheric pressure micro-plasma generating device, in particular to a device for generating a safe injectable gas micro-discharge plasma using a micro-hole optical fiber insertion electrode under atmospheric pressure conditions and using an insulated needle. Background technique [0002] Low-temperature plasma is the fourth state of matter after solid, liquid, and gaseous states. When the applied voltage reaches the ignition voltage of the gas, the gas molecules are broken down to produce a mixture of electrons, various ions, atoms and free radicals. . Atmospheric pressure low-temperature plasma technology does not require complicated vacuum equipment. It has the characteristics of low cost, low energy consumption and high efficiency. The gas temperature during discharge is low (40-80 degrees Celsius), safe and stable, and no secondary pollution will be caused during the processing. . In the past ten years, low-temperature pl...

Claims

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Application Information

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IPC IPC(8): H05H1/24
Inventor 刘东平倪维元
Owner DALIAN NATIONALITIES UNIVERSITY
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