Syringe type atmospheric-pressure micro-plasma generator

A micro-plasma and injector-type technology, which is applied in the direction of plasma and electrical components, can solve the problems of restricting the development of plasma application technology, high plasma gas flow rate, and staying in the processing range, so as to achieve simple discharge mode and high gas flow rate. The effect of low cost and low equipment cost

Active Publication Date: 2014-04-02
DALIAN NATIONALITIES UNIVERSITY
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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

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing.

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

[0024] When discharging, the discharg...

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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 by using a micro-hole optical fiber insertion electrode under atmospheric pressure conditions and using an insulating needle. Background technique [0002] Low-temperature plasma is the fourth state of matter after solid state, liquid state, and gas state. When the applied voltage reaches the ignition voltage of the gas, the gas molecules are broken down to produce a mixture including electrons, various ions, atoms, and free radicals. . Atmospheric pressure low-temperature plasma technology does not require complex vacuum equipment, and has the characteristics of low cost, low energy consumption, and high efficiency. The gas temperature is low (40-80 degrees Celsius) during discharge, safe and stable, and will not cause secondary pollution during the process. . In the past ten years, lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05H1/24
Inventor 刘东平倪维元
Owner DALIAN NATIONALITIES UNIVERSITY
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