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A Hollow Electrode Dielectric Barrier Structure

A dielectric barrier, hollow electrode technology, applied in electrical components, plasma and other directions, can solve the problem of increased difficulty in exciting air, and achieve the effects of being easy to carry, easy to manufacture, and easy to use

Active Publication Date: 2017-07-07
北京三十四科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both nitrogen and oxygen are diatomic molecules, and the rotational energy level and vibrational energy level are smaller than the electronic energy level. At the same time, oxygen molecules have a strong electronegativity, therefore, the difficulty of exciting the air is greatly increased

Method used

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  • A Hollow Electrode Dielectric Barrier Structure
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  • A Hollow Electrode Dielectric Barrier Structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: The section length of the air outlet 17 is adjusted to be 1 / 3, 2 / 3 and 1 time of the air inlet 15 respectively, the working gas 18 is air, and the air flows in at a flow rate of 300 L / h through the adjustment of the gas control switch 16 Hollow discharge structure, the frequency 20kHz power supply 13 constantly raises the voltage to excite the hollow discharge structure.

[0037] Such as Figure 6 As shown, the result of the electron density of Example 1 of the present invention increases with the reduction of the gas outlet 17, and the electron density is as high as 10 15 / cm 3 Magnitude.

[0038] Such as Figure 7 As shown, the gas pressure and turbulence distribution results in Embodiment 1 of the present invention decrease with the reduction of the gas outlet 17 (as Figure 7 (a)~ Figure 7 As shown in (c), the internal pressure of the hollow electrode dielectric barrier structure increases, and there is obvious turbulence.

Embodiment 2

[0039] Embodiment 2: The working gas 18 is air, and the air flow rate is controlled by the gas control switch 16 to flow into the hollow discharge structure at 200L / h, 300L / h and 400L / h respectively, and the cross-sectional length of the air outlet 17 is 1 of the air inlet 15. / 3, the high voltage power supply 13 with a frequency of 20kHz continuously raises the voltage to excite the hollow discharge structure.

[0040] Such as Figure 8 As shown, the result of the electron density in Example 2 of the present invention increases with the increase of the air flow rate, and the electron density is constantly increasing, and the electron density is as high as 10 15 / cm 3 Magnitude.

[0041] Such as Figure 9 As shown, the gas pressure and turbulence distribution results increase with the increase of the air flow velocity in the second embodiment of the present invention (as Figure 9 (a)~ Figure 9 As shown in (c), the internal pressure of the hollow electrode dielectric bar...

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Abstract

The invention relates to a hollow electrode dielectric barrier structure, which includes a cavity, a high-voltage electrode is arranged on the top of the cavity, and a ground electrode is arranged on the bottom of the cavity, and one end of the high-voltage electrode and one end of the ground electrode are connected to a power supply to form a hollow discharge structure; The electrode is provided with an air inlet, and the working gas enters the hollow discharge structure through the air inlet; the air inlet is also provided with a gas regulation switch controlled by the existing control equipment; The plasma jet generated on the high-voltage electrode is ejected from the gas outlet. The invention has a strong recoil effect, can effectively excite air, and has an electron density as high as 1015 / cm3 order of magnitude. Moreover, the temperature of the plasma jet formed by excitation of the barrier structure is close to room temperature, the human body can be safely touched without electric shock, and there is almost no ozone around the hollow discharge structure. The invention can be widely applied in more fields including nanomaterials, biomedicine and environmental engineering.

Description

technical field [0001] The invention relates to a gas discharge structure, in particular to a hollow electrode dielectric barrier structure for forming air plasma jets. Background technique [0002] Plasma is the fourth state of matter and usually consists of positive ions, neutral particles and electrons. Generally, plasma can be divided into high-temperature plasma and low-temperature plasma according to temperature, and low-temperature plasma can be further divided into hot plasma and cold plasma. The temperature of all particles in hot plasma is the same, while the temperature of electrons in cold plasma is as high as tens of thousands of degrees, while the temperature of ions and neutral particles is much lower than that of electrons, so the overall temperature is relatively low. There are abundant active groups in cold plasma, which can be widely used in the fields of surface modification of materials, preparation of nanomaterials, biomedical applications, and environ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05H1/26
Inventor 于双王凯乐张珏方竞
Owner 北京三十四科技有限公司
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