CN218550253U - Atmospheric pressure plasma generator in air - Google Patents

Atmospheric pressure plasma generator in air Download PDF

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Publication number
CN218550253U
CN218550253U CN202221730044.6U CN202221730044U CN218550253U CN 218550253 U CN218550253 U CN 218550253U CN 202221730044 U CN202221730044 U CN 202221730044U CN 218550253 U CN218550253 U CN 218550253U
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electrode array
metal sheet
grounding metal
voltage
needle electrode
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CN202221730044.6U
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郭啸龙
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Wuan Fuliya Electronic Technology Co ltd
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Wuan Fuliya Electronic Technology Co ltd
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Abstract

The utility model relates to a plasma generator in atmospheric air, wherein a high-voltage needle electrode array is fixed on an inner base; the discharge end of the high-voltage needle electrode array is exposed out of the upper end of the inner base. One end of the outer cover is open, and the other end of the outer cover is provided with a base groove communicated with the outside; the grounding metal sheet is arranged in the base groove, and the outer side of the grounding metal sheet is communicated with the outside; the grounding metal sheet is provided with an annular hole. The inner base is fixed on the inner side of the outer cover; the high-voltage needle electrode array and the annular hole are coaxially arranged. The high-voltage pin electrode array is electrically connected with the plasma excitation power supply, and the grounding metal sheet is electrically connected with the grounding end of the plasma excitation power supply. The utility model provides an atmospheric pressure plasma generator in air, plasma mainly produce between conductivity receptor surfaces such as high-tension needle electrode array and skin, and plasma dispersion discharges and mainly produces on conductivity receptor surfaces such as high-tension needle electrode array and skin, and all kinds of high energy active particles, little current are handled skin.

Description

Atmospheric pressure plasma generator in air
Technical Field
The utility model relates to an electronic equipment technical field, in particular to plasma generator in atmosphere pressure air.
Background
The atmospheric air low-temperature plasma has a very wide application prospect, but the discharge in the atmospheric air is easily converted into streamer discharge from Thonsson discharge to form a spark breakdown channel, so that the application of the spark breakdown channel is influenced. On one hand, the structure of the plasma generator determines the stability, uniformity and dispersion degree of the plasma in atmospheric air; on the other hand, the structure of the plasma generator depends on the requirements of the practical application scenario of the plasma, and the two are mutually restricted. For example, plasma is often generated between two electrodes, but many applications such as medical and cosmetic require that the plasma be generated directly at the receptor surface. How to combine practical application, and generate plasma which combines uniformity, stability and receptor surface application through structural design optimization of a plasma generator is a problem which needs to be researched urgently in the application field.
SUMMERY OF THE UTILITY MODEL
The utility model provides a plasma generator in atmospheric pressure air to the technical problem that is difficult to produce and compromises plasma evenly stable and acceptor surface application that exists among the prior art.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
an atmospheric pressure in-air plasma generator, comprising: the high-voltage pin electrode array, the grounding metal sheet, the inner base and the outer cover;
the high-voltage needle electrode array is fixed on the inner base; the discharge end of the high-voltage needle electrode array is exposed out of the outer side of the upper end of the inner base;
one end of the outer cover is open, and the other end of the outer cover is provided with a base groove communicated with the outside; the grounding metal sheet is arranged in the base groove, and the outer side of the grounding metal sheet is communicated with the outside; the grounding metal sheet is provided with an annular hole;
the inner base is fixed on the inner side of the outer cover; the high-voltage needle electrode array is coaxially arranged with the annular hole; a gap is arranged between the high-voltage pin electrode array and the grounding metal sheet;
the high-voltage pin electrode array is electrically connected with the plasma excitation power supply, and the grounding metal sheet is electrically connected with the grounding end of the plasma excitation power supply.
Further, the method comprises the following steps: the inner base is of a circular truncated cone structure; the inner base is provided with an external thread fixedly connected with the outer cover; and a screw hole for mounting the high-voltage needle electrode array is formed in the middle of the inner base.
Further, the method comprises the following steps: the upper end of the high-voltage needle electrode array is provided with a discharge end, and the discharge end is provided with a needle point structure; the outer end part of the discharge end of the high-voltage needle electrode array is flush and is uniformly and densely distributed on the circumference;
the lower end of the high-voltage needle electrode array is of a screw structure, and the lower end of the high-voltage needle electrode array is fixed in a screw hole formed in the middle of the inner base in a threaded mode.
Further, the method comprises the following steps: the inner aperture r of the grounding metal sheet, the vertical distance d2 between the end part of the high-voltage pin electrode array and the grounding metal sheet, and the minimum distance d1 between the end part of the high-voltage pin electrode array and the inner aperture edge of the grounding metal sheet form a right-angle trigonometric function relation: d1 2 ＝d2 2 +r 2 And d1 is>d2。
Further, the dustcoat is the hollow structure of transparent material, and the inboard of preferred material for the organic glass dustcoat is provided with the screw thread with interior base outside matched with.
The utility model provides an atmospheric pressure plasma generator in air possesses following beneficial effect or advantage at least:
in the atmospheric pressure plasma generator provided by the utility model, the high-voltage needle electrode array is fixed on the inner base; the discharge end of the high-voltage needle electrode array is exposed out of the upper end of the inner base. One end of the outer cover is open, and the other end of the outer cover is provided with a base groove communicated with the outside; the grounding metal sheet is arranged in the base groove, and the outer side of the grounding metal sheet is communicated with the outside; the grounding metal sheet is provided with an annular hole. The inner base is fixed on the inner side of the outer cover; the high-voltage needle electrode array and the annular hole are coaxially arranged; a gap is arranged between the high-voltage pin electrode array and the grounding metal sheet. The high-voltage pin electrode array is electrically connected with the plasma excitation power supply, and the grounding metal sheet is electrically connected with the grounding end of the plasma excitation power supply. When the plasma generator is used for processing the surfaces of the closely-attached skin and other conductive receptors, as the surfaces of the skin and other conductive receptors are at the same potential as the grounding metal sheet, plasma is mainly generated between the high-voltage pin electrode array and the surfaces of the skin and other conductive receptors (particularly in the annular hole area of the grounding metal sheet), plasma dispersion discharge is mainly generated on the surfaces of the high-voltage pin electrode array and the skin and other conductive receptors, and various high-energy active particles and micro-current correspondingly process the surfaces of the skin and other conductive receptors.
Drawings
Fig. 1 is a schematic structural diagram of a plasma generator in atmospheric air according to an embodiment of the present invention;
fig. 2 is a schematic view of a partial structure of a plasma generator in atmospheric air according to an embodiment of the present invention;
fig. 3 is a schematic view of another partial structure of an atmospheric pressure plasma generator according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-outer cover, 2-inner base, 3-high voltage pin electrode array, 4-grounding metal sheet, 5-first plasma area, and 6-second plasma area.
Detailed Description
The utility model provides a plasma generator in atmospheric pressure air to the technical problem that is difficult to produce and compromises plasma evenly stable and acceptor surface application that exists among the prior art.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that terms such as "upper", "lower", "front", "rear", "left", "right", etc. in the embodiments indicate terms of orientation, and are only used for simplifying the description of positional relationships based on the drawings of the specification, and do not represent that the elements, devices, etc. indicated must be operated according to the specific orientation and defined operation and method, configuration in the specification, and such terms of orientation do not constitute limitations of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.
As shown in fig. 1-3, an embodiment of the present invention provides an atmospheric pressure plasma generator in air, including: high-voltage pin electrode array 3, ground connection sheetmetal 4, inner base 2 and dustcoat 1. Specifically, the method comprises the following steps: the high-voltage needle electrode array 3 is fixed on the inner base 2; the discharge end of the high-voltage needle electrode array 3 is exposed out of the upper end of the inner base 2. One end of the outer cover 1 is open, and the other end is provided with a base groove communicated with the outside; the grounding metal sheet 4 is arranged in the base groove, and the outer side of the grounding metal sheet 4 is communicated with the outside, so that electric conductors such as skin can be conveniently contacted with the outer side of the grounding metal sheet 4; the grounding plate 4 is provided with an annular hole. The inner base 2 is fixed on the inner side of the outer cover 1; the high-voltage needle electrode array 3 is coaxially arranged with the annular hole; a gap is arranged between the high-voltage needle electrode array 3 and the grounding metal sheet 4. The high-voltage pin electrode array 3 is electrically connected with a plasma excitation power supply, and the grounding metal sheet 4 is electrically connected with the grounding end of the plasma excitation power supply.
This inner base 2 sets up to the round platform structure, and inner base 2's material is insulating material, preferably organic glass. The inner base 2 is provided with an external thread fixedly connected with the outer cover 1; the middle of the inner base 2 is provided with a screw hole for installing the high-voltage needle electrode array 3.
The upper end of the high-voltage needle electrode array 3 is set as a discharge end, the discharge end is set as a needle point structure, the discharge end is an excitation emission source of plasma, and ablation-resistant conducting wire materials, preferably stainless steel, are adopted. The outer end part of the discharge end of the high-voltage needle electrode array 3 is flush, the circumference is uniformly and densely distributed, and the curvature radius of the tip of the single needle is as small as possible. The lower end of the high-voltage needle electrode array 3 is of a screw structure, and the lower end of the high-voltage needle electrode array 3 is fixed in a screw hole formed in the middle of the inner base 2 in a threaded mode. The diameter of the high-voltage needle electrode array 3 is determined by the voltage of a plasma excitation power supply, the higher the voltage is, the larger the allowable diameter of the high-voltage needle electrode array 3 is, and the larger the distance between the high-voltage needle electrode array 3 and the grounding metal sheet 4 is; the length of the high voltage needle electrode array 3 is determined by the assembly structure of the inner base 2.
The ground plate 4 is a conductive skin-friendly material, preferably brass. The grounding metal sheet 4 is a hollow circular ring sheet structure, and the outer end part of the grounding metal sheet is provided with a wiring terminal for being connected with a grounding end of a plasma excitation power supply. The inner aperture of the circular ring of the grounding metal sheet 4 is determined by the combination of two quantities, namely the voltage of a plasma excitation power supply and the vertical distance between the end part of the high-voltage pin electrode array 3 and the grounding metal sheet 4, the inner aperture of the grounding metal sheet 4 is a standard circle, the end surface is smooth, the inner aperture is smaller than the inner diameter of the circular base groove at the end part of the insulating transparent outer cover 1, the inner aperture of the circular ring of the grounding metal sheet 4 and the high-voltage pin electrode array 3 are aligned in the axis and the end surface is horizontal, and the smaller the thickness of the grounding metal sheet 4 is, the better the thickness is. The inner aperture r of the grounding metal sheet 4, the vertical distance d2 between the end part of the high-voltage pin electrode array 3 and the grounding metal sheet 4, and the minimum distance d1 between the end part of the high-voltage pin electrode array 3 and the inner hole edge of the grounding metal sheet 4 form a right-angle trigonometric function relation: d1 2 ＝d2 2 +r 2 And d1 is>d2。
The outer cover 1 is a hollow structure made of transparent materials, and threads matched with the outer side of the inner base 2 are arranged on the inner side of the outer cover 1. The material of the outer cover 1 is an insulating material, preferably organic glass. The distance between the internal thread of the outer cover 1 and the circular ring-shaped base groove determines the distance between the high-voltage pin electrode array 3 and the grounding metal sheet 4.
As shown in FIG. 2, the plasma generator is normally operated because the minimum distance between the high voltage pin electrode array 3 and the grounding metal sheet 4 is d 1 Thus, the plasma is mainly in the region shown in fig. 2: high voltage needle electrode arrayThe inner hole of the circular ring of the grounding metal sheet 4 is aligned with the axis of the high-voltage needle electrode array 3, and the section of the inner hole is horizontal, so that uniform and stable plasma can be generated. When the plasma is used to treat a closely contacted conductive receptor surface such as skin, the minimum distance between the high-voltage pin electrode array 3 and the ground potential is d, since the conductive receptor surface such as skin and the grounding metal sheet 4 are at the same potential, as shown in fig. 3 2 Thus, the plasma is mainly in the region shown in fig. 3: plasma dispersion discharge is mainly generated between the high-voltage pin electrode array 3 and the surface of a conductive receptor such as skin (the inner area of a circular ring hole of the grounding metal sheet 4), and various high-energy active particles and micro-current correspondingly treat the surface of the conductive receptor such as skin.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (5)

1. An atmospheric pressure in-air plasma generator, comprising: the method comprises the following steps: the high-voltage pin electrode array, the grounding metal sheet, the inner base and the outer cover;
the high-voltage needle electrode array is fixed on the inner base; the discharge end of the high-voltage needle electrode array is exposed out of the outer side of the upper end of the inner base;
one end of the outer cover is open, and the other end of the outer cover is provided with a base groove communicated with the outside; the grounding metal sheet is arranged in the base groove, and the outer side of the grounding metal sheet is communicated with the outside; the grounding metal sheet is provided with an annular hole;
the inner base is fixed on the inner side of the outer cover; the high-voltage needle electrode array is coaxially arranged with the annular hole; a gap is arranged between the high-voltage pin electrode array and the grounding metal sheet;
the high-voltage pin electrode array is electrically connected with the plasma excitation power supply, and the grounding metal sheet is electrically connected with the grounding end of the plasma excitation power supply.
2. The atmospheric-pressure in-air plasma generator of claim 1, wherein: the inner base is of a circular truncated cone structure; the inner base is provided with an external thread fixedly connected with the outer cover; and a screw hole for mounting the high-voltage needle electrode array is formed in the middle of the inner base.
3. The atmospheric-pressure in-air plasma generator of claim 1, wherein: the upper end of the high-voltage needle electrode array is provided with a discharge end, and the discharge end is provided with a needle point structure; the outer end part of the discharge end of the high-voltage needle electrode array is flush and is uniformly and densely distributed on the circumference;
the lower end of the high-voltage needle electrode array is of a screw structure, and the lower end of the high-voltage needle electrode array is fixed in a screw hole formed in the middle of the inner base in a threaded mode.
4. An atmospheric-pressure in-air plasma generator according to any one of claims 1 to 3, wherein: the inner aperture r of the grounding metal sheet, the vertical distance d2 between the end part of the high-voltage pin electrode array and the grounding metal sheet, and the minimum distance d1 between the end part of the high-voltage pin electrode array and the inner aperture edge of the grounding metal sheet form a right-angle trigonometric function relation: d1 2 ＝d2 2 +r 2 And d1 is>d2。
5. An atmospheric-pressure in-air plasma generator according to any one of claims 1 to 3, wherein: the outer cover is of a hollow structure made of transparent materials, and threads matched with the outer side of the inner base are arranged on the inner side of the outer cover.
CN202221730044.6U 2022-07-04 2022-07-04 Atmospheric pressure plasma generator in air Active CN218550253U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221730044.6U CN218550253U (en) 2022-07-04 2022-07-04 Atmospheric pressure plasma generator in air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221730044.6U CN218550253U (en) 2022-07-04 2022-07-04 Atmospheric pressure plasma generator in air

Publications (1)

Publication Number Publication Date
CN218550253U true CN218550253U (en) 2023-02-28

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ID=85267744

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221730044.6U Active CN218550253U (en) 2022-07-04 2022-07-04 Atmospheric pressure plasma generator in air

Country Status (1)

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CN (1) CN218550253U (en)

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