Plasma generator and plasma comb

Abstract

The present application proposes a plasma generator and a plasma comb. The plasma generator includes: a cylindrical electrode structure and a power supply module. The cylindrical electrode structure includes: a high-voltage electrode layer, a dielectric barrier layer, and a ground electrode layer in order from the central axis radially outward; the dielectric barrier layer surrounds the high-voltage electrode layer; the ground electrode layer is distributed in strips with gaps on the outer surface of the dielectric barrier layer; the power supply module provides high-voltage pulse excitation to the high-voltage electrode layer and the ground electrode layer, so that the air around the ground electrode layer is excited to generate plasma. The plasma generator provided by the present application can generate uniform plasma on the surface of the discharge structure.

Description

Technical Field

[0001] The present application belongs to the field of plasma technology, and specifically relates to a plasma generator and a plasma comb. Background Art

[0002] Plasma is an ionized gaseous substance composed of positive and negative ions produced by the ionization of atoms and atomic groups after partial electron deprivation. It is a macroscopic electrically neutral ionized gas with a scale larger than the Debye length. Plasma produces reactive chemicals, rich in a large number of active free radicals, neutral particles, oxygen ions, hydroxyl and other active particles (RONS), such as hydroxyl radicals (OH), nitrous oxide (N2O), nitric oxide (NO), ozone (O3), and superoxide (O2). Plasma has a broad spectrum of bactericidal ability and can directly act on the surface of biological tissues.

[0003] The structures of plasma generators include suspended electrode type and dielectric barrier discharge. The suspended electrode type uses biological tissue as the ground electrode to generate plasma when in use. Plasma can only be generated when the discharge structure is in contact with the conductive biological tissue or is very close (within 5mm). Plasma cannot be generated on the surface of the discharge structure that is not in contact with the conductive biological tissue, and plasma cannot be generated on the contact surface of non-conductive biological tissue such as hair.

[0004] Dielectric barrier discharge is a form of gas discharge in which an insulating medium is inserted into the discharge space. The discharge channel running through the two electrodes is blocked by the insulating medium in the air gap, thereby generating a large-area, high-energy, and high-density plasma in the channel. In related technologies, the discharge space of dielectric barrier discharge is located inside the electrode structure and cannot directly act on the surface of biological tissue. Therefore, how to generate plasma discharge away from the surface of biological tissue has become an important issue that needs to be solved urgently. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, the present application proposes a plasma generator and a plasma comb.

[0006] The technical solution adopted by this application to solve its technical problem is:

[0007] In a first aspect, the present application provides a plasma generator, comprising:

[0008] A cylindrical electrode structure, wherein the cylindrical electrode structure includes, radially outward from the central axis, a high-voltage electrode layer, a dielectric barrier layer, and a ground electrode layer;

[0009] The dielectric barrier layer surrounds the high voltage electrode layer; the ground electrode layer is distributed on the outer surface of the dielectric barrier layer in strips with gaps;

[0010] A power supply module is provided to provide high-voltage pulse excitation to the high-voltage electrode layer and the ground electrode layer, so that the air around the ground electrode layer is excited to generate plasma.

[0011] In one embodiment, the high-voltage electrode layer is in a tubular structure; a PTC ceramic heating element is disposed inside the tubular structure, and the PTC ceramic heating element is connected to the power module, or an insulating medium layer is filled inside the tubular structure.

[0012] In one embodiment, the ground electrode layer includes a plurality of strip-shaped ground electrodes arranged around the outer surface of the dielectric barrier layer; the high-voltage electrode layer includes a plurality of strip-shaped high-voltage electrodes arranged around the inner surface of the dielectric barrier layer; the plurality of strip-shaped ground electrodes are evenly spaced on the outer surface of the dielectric barrier layer; the plurality of strip-shaped high-voltage electrodes are evenly spaced on the inner surface of the dielectric barrier layer.

[0013] In one embodiment, the plurality of strip-shaped ground electrodes and the plurality of strip-shaped high-voltage electrodes extend along the axial direction of the electrode structure; the plurality of strip-shaped ground electrodes and the plurality of strip-shaped high-voltage electrodes are alternately arranged around the dielectric barrier layer.

[0014] In one embodiment, an insulating dielectric layer is disposed on the outer surfaces of the plurality of strip-shaped ground electrodes.

[0015] In one embodiment, the ground electrode layer includes a plurality of strip electrodes; the plurality of strip electrodes extend along the axial direction of the electrode structure, and the plurality of strip electrodes are distributed on the outer surface of the dielectric barrier layer at equal intervals.

[0016] In one embodiment, the ground electrode layer includes a plurality of strip electrodes; the plurality of strip electrodes extend along the axial direction of the electrode structure, the plurality of strip electrodes are evenly spaced and distributed on the outer surface of the dielectric barrier layer, and the plurality of strip electrodes are connected end to end to form a "X" shape.

[0017] In one embodiment, the ground electrode layer includes a plurality of annular electrodes; the plurality of annular electrodes surround the central axis of the electrode structure and are distributed on the outer surface of the dielectric barrier layer at equal intervals.

[0018] In one embodiment, the ground electrode layer includes a grid electrode; the gaps in the grid electrode are polygonal, and the shape of the polygon includes any one of the following: rectangle, rhombus, square, triangle, hexagon.

[0019] In a second aspect, the present application provides a plasma comb, comprising: a comb base; a plurality of comb teeth arranged at intervals on the comb base, the plurality of comb teeth including at least one first comb tooth; the first comb tooth includes a cylindrical electrode structure, the cylindrical electrode structure includes, radially outward from the central axis, in sequence: a high-voltage electrode layer, a dielectric barrier layer, and a ground electrode layer; the dielectric barrier layer surrounds the high-voltage electrode layer; the ground electrode layer is distributed in strips with gaps on the outer surface of the dielectric barrier layer; a power supply module, the power supply module provides high-voltage pulse excitation to the high-voltage electrode layer and the ground electrode layer, so that the air around the ground electrode layer is excited to generate plasma and diffuse outward.

[0020] In one embodiment, the high-voltage electrode layer is in a tubular structure; a PTC ceramic heating element is disposed inside the tubular structure, and the PTC ceramic heating element is connected to the power supply module; the plasma comb further includes: a temperature control module for controlling the temperature of the PTC ceramic heating element.

[0021] The beneficial effects of the present application are as follows: the plasma generator provided by the present application includes a cylindrical electrode structure, which includes coaxially arranged high-voltage electrode layers, dielectric barrier layers, and ground electrode layers in sequence from the central axis radially outward; uniform plasma can be generated on the surface of the discharge structure when far away from the surface of biological tissue. The plasma comb provided by the present application, the first comb teeth allow the comb to generate plasma discharge far away from the surface of biological tissue, and generate uniform plasma on the surface of the discharge structure. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0024] Figure 2 This application discloses Figure 1 Schematic diagram of the cross section of a plasma generator.

[0025] Figure 3 It is a schematic cross-sectional view of a plasma generator disclosed in an embodiment of the present application.

[0026] Figure 4 It is a schematic cross-sectional view of a plasma generator disclosed in an embodiment of the present application.

[0027] Figure 5 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0028] Figure 6 This application discloses Figure 5 Schematic diagram of the cross section of a plasma generator.

[0029] Figure 7 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0030] Figure 8 This application discloses Figure 7 Schematic diagram of the structure of the plasma generator.

[0031] Fig. 9 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0032] Fig.10 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0033] Fig.11 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0034] Fig.12 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0035] Fig.13 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0036] Fig.14 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0037] Fig.15 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0038] Fig.16 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0039] Fig.17 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0040] Fig.18 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0041] Fig.19 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0042] Fig. 20 It is a schematic diagram of the structure of the plasma generator disclosed in the embodiment of the present application.

[0043] Fig.21 It is a schematic diagram of the structure of the plasma comb disclosed in the embodiment of the present application.

[0044] Fig. 22It is a schematic diagram of the structure of the first comb tooth disclosed in the embodiment of the present application. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] The plasma generator disclosed in the present application comprises: a cylindrical electrode structure and a power supply module. The cylindrical electrode structure comprises, radially outward from the central axis, a high-voltage electrode layer, a dielectric barrier layer, and a ground electrode layer in sequence; the dielectric barrier layer surrounds the high-voltage electrode layer; the ground electrode layer is distributed in strips with gaps on the outer surface of the dielectric barrier layer; the power supply module provides high-voltage pulse excitation to the high-voltage electrode layer and the ground electrode layer, so that the air around the ground electrode layer is excited to generate plasma.

[0047] In practical applications, the power supply module can provide sinusoidal voltage excitation to the high voltage electrode layer and the ground electrode layer, so that the air around the ground electrode layer is excited to generate plasma. The voltage amplitude is 1-30KV and the frequency is in the kilohertz range.

[0048] Figure 1 is a schematic diagram of the structure of the plasma generator disclosed in this application, Figure 2 is a cross-sectional schematic diagram of the plasma generator disclosed in this application, such as Figure 1 , 2 As shown, the plasma generator of the present application is generally a multi-layer cylindrical electrode structure, including a high-voltage electrode layer and a ground electrode layer, a dielectric barrier layer is filled between the high-voltage electrode layer and the ground electrode layer, and the lines of the ground electrode layer are strip-shaped and evenly distributed on the outer surface of the dielectric barrier layer with gaps. Therefore, the present application can generate uniform plasma on all parts of the discharge structure surface.

[0049] In an example, the shape of the cylindrical electrode structure may include a cylindrical shape, a prism shape, or a spherical shell shape.

[0050] like Figure 1 , Figure 2 As shown, the plasma generator disclosed in the present application includes a cylindrical electrode structure 10 and a power supply module (not shown); the cylindrical electrode structure 10 includes, radially outward from the central axis, a high-voltage electrode layer 102, a dielectric barrier layer 103 surrounding the high-voltage electrode layer 102, and a ground electrode layer 104 distributed in strips with gaps on the outer surface of the dielectric barrier layer 103; the power supply module provides high-voltage pulse excitation to the high-voltage electrode layer and the ground electrode layer, so that the air around the ground electrode layer is excited to generate plasma.

[0051] In one embodiment, the ground electrode layer 104 may be located only on the surface of the dielectric barrier layer 103. In another embodiment, the ground electrode layer 104 may be embedded in the dielectric barrier layer 103 and flush with the outer surface of the dielectric barrier layer 103.

[0052] In one embodiment, the ground electrode layer includes a plurality of strip-shaped ground electrodes arranged around the outer surface of the dielectric barrier layer; the high-voltage electrode layer includes a plurality of strip-shaped high-voltage electrodes arranged around the inner surface of the dielectric barrier layer; the plurality of strip-shaped ground electrodes are evenly spaced on the outer surface of the dielectric barrier layer; and the plurality of strip-shaped high-voltage electrodes are evenly spaced on the inner surface of the dielectric barrier layer.

[0053] Figure 3 This is a cross-sectional schematic diagram of a cylindrical plasma generator provided in one embodiment of the present application. Figure 4 FIG. 1 is a schematic cross-sectional view of a prismatic plasma generator provided in one embodiment of the present application. Figure 3 , 4 As shown, the ground electrode layer 104 includes a plurality of strip-shaped ground electrodes 1041 arranged around the outer surface of the dielectric barrier layer; the high-voltage electrode layer 102 includes a plurality of strip-shaped high-voltage electrodes 1021 arranged around the inner surface of the dielectric barrier layer; the plurality of strip-shaped ground electrodes 1041 are evenly spaced on the outer surface of the dielectric barrier layer 103; and the plurality of strip-shaped high-voltage electrodes 1021 are evenly spaced on the inner surface of the dielectric barrier layer 103.

[0054] In one embodiment, the plurality of strip-shaped ground electrodes 1041 and the plurality of strip-shaped high-voltage electrodes 1021 extend along the axial direction of the electrode structure; the plurality of strip-shaped ground electrodes 1041 and the plurality of strip-shaped high-voltage electrodes 1021 are alternately arranged around the dielectric barrier layer.

[0055] like Figure 3 , 4 As shown, a plurality of strip-shaped ground electrodes 1041 and a plurality of strip-shaped high-voltage electrodes 1021 extend along the axial direction of the electrode structure; the plurality of strip-shaped ground electrodes and the plurality of strip-shaped high-voltage electrodes are alternately arranged around the dielectric barrier layer.

[0056] In the above scheme, multiple strip-shaped ground electrodes and multiple strip-shaped high-voltage electrodes extend along the axial direction of the electrode structure; multiple strip-shaped ground electrodes and multiple strip-shaped high-voltage electrodes are arranged alternately around the dielectric barrier layer. In this way, the direction of the electric field between the electrodes shifts from the normal direction to the tangential direction, thereby improving the discharge efficiency of the plasma generated on the surface.

[0057] In practical applications, the field intensity distribution between the strip-shaped high-voltage electrode 1021 and the strip-shaped ground electrode 1041 can be changed by adjusting the shape distribution of the strip-shaped high-voltage electrode 1021 inside the second insulating dielectric layer 106 .

[0058] In one embodiment, the outer surfaces of the plurality of strip-shaped ground electrodes are provided with an insulating dielectric layer, and the strip-shaped ground electrodes can be wrapped inside the first insulating dielectric layer. The plurality of strip-shaped high-voltage electrodes of the high-voltage electrode layer can be wrapped inside the second insulating dielectric layer.

[0059] like Figure 3 , 4 As shown, the strip ground electrode 1041 is wrapped inside the first insulating dielectric layer 105 , and the strip high voltage electrodes 1021 of the high voltage electrode layer are wrapped inside the second insulating dielectric layer 106 . The strip ground electrode 1041 is wrapped inside the first insulating dielectric layer 105 .

[0060] In one embodiment, the first insulating dielectric layer 105 may be a ceramic dielectric layer.

[0061] In the related art, the ground electrode of the dielectric barrier discharge structure is exposed, and plasma is generated at the edge of the ground electrode. In this way, the surface of the ground electrode will be oxidized, corroded, and fall off after a long period of plasma discharge. At the same time, the edge of the ground electrode has a high field strength due to the tip discharge effect, and a certain amount of filamentary discharge will occur.

[0062] In the above solution, the strip-shaped ground electrode 1041 is wrapped inside the ceramic dielectric layer, and presents a complete ceramic material from the appearance. During the plasma discharge process, the strip-shaped ground electrode 1041 will not be corroded, oxidized or fall off. At the same time, the overall aesthetics of the product and the stability of plasma discharge can be improved.

[0063] In one embodiment, the high-voltage electrode layer is in a tubular structure; a PTC (Positive Temperature Coefficient) ceramic heating element is disposed inside the tubular structure, and the PTC ceramic heating element is connected to a power supply module, or an insulating medium layer is filled inside the tubular structure.

[0064] like Figure 3 As shown, the high-voltage electrode layer is a tubular structure, and a PTC ceramic heating element 107 is arranged inside the tubular structure, and the PTC ceramic heating element 107 is connected to the power supply module. The PTC ceramic heating element is a positive temperature coefficient thermistor. In one embodiment, there is a gap between the PTC ceramic heating element 107 and the high-voltage electrode layer.

[0065] like Figure 5 , 6 As shown above Figure 1 The high-voltage electrode layer 102 in the embodiment has a tubular structure, and a central portion 101 is formed in the high-voltage electrode layer 102, and the central portion 101 is filled with an insulating medium layer. For example, the central portion 101 may be hollow, that is, filled with a gas insulating medium.

[0066] like Figure 7 , 8 As shown, the central portion 101 may be filled with a solid medium, that is, forming a central dielectric barrier layer 100. At this time, the high-voltage electrode layer 102 is a closed curved surface, such as a cylindrical surface, a prismatic surface, or a spherical surface.

[0067] In one embodiment, the ground electrode layer includes a plurality of strip electrodes; the plurality of strip electrodes extend along the axial direction of the electrode structure, and the plurality of strip electrodes are distributed on the outer surface of the dielectric barrier layer at equal intervals.

[0068] In the above-mentioned plasma generator proposed in the present application, the ground electrode layer 104 can have various forms, as long as the lines of the ground electrode layer are strip-shaped and evenly distributed with gaps on the surface of the multi-layer electrode structure.

[0069] like Figure 7 , 8 As shown, the ground electrode layer 104 includes a plurality of strip electrodes, the plurality of strip electrodes extend along the axial direction of the columnar electrode structure, and the plurality of strip electrodes are evenly spaced and distributed on the outer surface of the dielectric barrier layer 103 .

[0070] In one embodiment, the ground electrode layer includes a plurality of strip electrodes; the plurality of strip electrodes extend along the axial direction of the electrode structure, the plurality of strip electrodes are evenly spaced and distributed on the outer surface of the dielectric barrier layer, and the plurality of strip electrodes are connected end to end to form a "X" shape.

[0071] like Fig. 9 , 10 As shown in FIG. 11 , the ground electrode layer 104 includes a plurality of strip electrodes, the plurality of strip electrodes extend along the axial direction of the electrode structure, the plurality of strip electrodes are evenly spaced and distributed on the outer surface of the dielectric barrier layer 103 , and the plurality of strip electrodes are connected end to end to form a “X” shape.

[0072] In one embodiment, the ground electrode layer includes a plurality of annular electrodes; the plurality of annular electrodes surround the central axis of the electrode structure and are distributed on the outer surface of the dielectric barrier layer at equal intervals.

[0073] like Fig.12 , 13 As shown in FIG. 14 , the ground electrode layer 104 includes a plurality of annular electrodes, which surround the central axis of the electrode structure and are distributed on the outer surface of the dielectric barrier layer 103 at equal intervals.

[0074] like Fig.15 , 16 As shown in FIG. 17 , the ground electrode layer 104 includes a plurality of strip electrodes, which are bent around the central axis of the electrode structure and are distributed on the outer surface of the dielectric barrier layer 103 at equal intervals.

[0075] In one embodiment, the ground electrode layer includes a grid electrode; the gaps in the grid electrode are polygonal, and the shape of the polygon includes any one of the following: rectangle, rhombus, square, triangle, hexagon.

[0076] like Fig.18 , 19 As shown in FIG. 20 , the ground electrode layer 104 includes a grid electrode, and the gaps in the grid electrode are polygonal, and the polygon shown in the figure is a rhombus. In other embodiments of the present application, the polygon may also be a rectangle, square, triangle, hexagon, etc.

[0077] The plasma generator proposed in this application is a cylindrical multilayer structure, which includes a three-layer structure (ground electrode layer, high-voltage electrode layer, dielectric barrier layer) or a four-layer structure (ground electrode layer, high-voltage electrode layer, dielectric barrier layer, center part). When the device is working, the ground electrode layer and the high-voltage electrode layer are connected to an AC high-voltage excitation power supply or a pulsed high-voltage excitation power supply to generate uniform plasma on the side surface of the discharge structure.

[0078] The ground electrode layer can be made of conductive materials, such as copper. The line pattern can be any pattern with gaps, such as strips, honeycombs, triangular grids, square grids, etc., and the plasma is generated at the edge of the shape of the outer electrode. The dielectric barrier layer and the central dielectric barrier layer can be insulating materials, such as ceramics, glass, rubber, plastic, etc. The high-voltage electrode layer is made of conductive materials, such as copper.

[0079] The plasma generator proposed in the present application can self-discharge to generate uniform and stable plasma without contacting biological tissue, and can self-discharge deeply into the gaps between hairs to generate plasma, thereby achieving disinfection and cleaning from the hair tips to the hair roots to the skin surface of the medium layer under the hair.

[0080] The following is a detailed introduction to the preparation method of the plasma generator provided in the present application. The preparation method of the plasma generator provided in the present application may include the following steps:

[0081] Step A101: On a cylindrical material body, a high-voltage electrode layer is prepared by screen printing, a wiring port is reserved for the high-voltage electrode layer, and a high-temperature sintering process is used to diffuse the conductive material into the material body.

[0082] Step A102: growing a thin ceramic dielectric layer on the surface of the high voltage electrode layer, and sintering the ceramic dielectric layer at high temperature using a high temperature sintering process;

[0083] Step A103: screen-print a ground electrode layer on the surface of the ceramic dielectric layer, reserve a wiring port for the ground electrode layer, and use a high-temperature sintering process to diffuse the screen-printed conductive material into the ceramic dielectric layer.

[0084] In practical applications, a dielectric barrier layer 103 is wrapped on the surface of the central high-voltage electrode layer 102 material, a connection port of the high-voltage electrode layer 102 is reserved, and high-temperature sintering is performed. A ground electrode layer 104 is printed on the surface of the dielectric barrier layer 103 .

[0085] In practical applications, the high-voltage electrode layer 102 is printed on the central dielectric barrier layer 100 material by thick film printing process, so that the conductive material of the high-voltage electrode layer 102 penetrates into the central dielectric barrier layer 100 material. A dielectric barrier layer 103 is wrapped on the surface of the high-voltage electrode layer 102 and sintered at high temperature. The ground electrode layer 104 is printed on the surface of the dielectric barrier layer 103.

[0086] In one embodiment, the plasma generator disclosed above can be applied to electronic devices such as combs, so that the electronic devices have a plasma discharge function.

[0087] like Fig.21 As shown, the plasma comb disclosed in the present application includes: a comb base 11, and a plurality of comb teeth arranged at intervals on the comb base 11, wherein the plurality of comb teeth include at least one first comb tooth, and the remaining comb teeth may be ordinary comb teeth. For the convenience of the user, the comb base may further include a handle for the user to grasp.

[0088] In one embodiment, the first comb teeth include the columnar electrode structure of each of the above embodiments. The first comb teeth are multi-layer columnar electrode structures. Fig. 22 As shown, the first comb tooth is a cylindrical multilayer structure, which includes, radially outward from the central axis, a high-voltage electrode layer, a dielectric barrier layer, and a ground electrode layer. The dielectric barrier layer surrounds the high-voltage electrode layer; the ground electrode layer is distributed in strips with gaps on the outer surface of the dielectric barrier layer.

[0089] In one embodiment, the plasma comb further includes a power supply module, which can be disposed in the comb base and connected to each first comb tooth. The power supply module provides high voltage pulse excitation to the high voltage electrode layer and the ground electrode layer of each first comb tooth, so that the air around the ground electrode layer of each first comb tooth is excited to generate plasma and diffuse outward.

[0090] In one embodiment, the high-voltage electrode layer may be in a tubular structure; a PTC ceramic heating element is disposed inside the tubular structure, and the PTC ceramic heating element is connected to a power supply module.

[0091] In one embodiment, the plasma comb further includes: a temperature control module for controlling the temperature of the PTC ceramic heating element.

[0092] In one embodiment, the plasma comb may further include a switch for turning on or off the high voltage pulse excitation provided to the high voltage electrode layer.

[0093] The first comb teeth in the plasma comb provided in the present application allow the comb to generate plasma discharge away from the surface of biological tissue, generate uniform plasma on the surface of the discharge structure, and during the process of combing hair, self-discharge can penetrate deep into the gaps between hair to generate plasma, thereby achieving disinfection and cleaning from the hair tips to the hair roots to the skin surface under the hair.

[0094] In the description of the present application, the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0095] The above description of the various embodiments tends to emphasize the differences between the various embodiments. The same or similar parts can be referenced to each other. For the sake of brevity, this article will not repeat them.

[0096] The features disclosed in the various product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0097] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected. The scope of protection claimed in the present application is defined by the attached claims and their equivalents.

Claims

1. A plasma generator, characterized in that: include: A cylindrical electrode structure, wherein the cylindrical electrode structure includes, radially outward from the central axis, a high-voltage electrode layer, a dielectric barrier layer, and a ground electrode layer; The dielectric barrier layer surrounds the high voltage electrode layer; the ground electrode layer is distributed on the outer surface of the dielectric barrier layer in strips with gaps; A power supply module, wherein the power supply module provides high-voltage pulse excitation to the high-voltage electrode layer and the ground electrode layer, so that the air around the ground electrode layer is excited to generate plasma; The ground electrode layer includes a plurality of strip-shaped ground electrodes arranged around the outer surface of the dielectric barrier layer, and the plurality of strip-shaped ground electrodes are connected end to end to form a "X" shape; the high-voltage electrode layer includes a plurality of strip-shaped high-voltage electrodes arranged around the inner surface of the dielectric barrier layer; The plurality of strip-shaped ground electrodes are evenly spaced and distributed on the outer surface of the dielectric barrier layer; the plurality of strip-shaped high-voltage electrodes are evenly spaced and distributed on the inner surface of the dielectric barrier layer; The plurality of strip-shaped ground electrodes and the plurality of strip-shaped high-voltage electrodes extend along the axial direction of the electrode structure; The plurality of strip-shaped ground electrodes and the plurality of strip-shaped high-voltage electrodes are arranged alternately around the dielectric barrier layer.

2. The plasma generator according to claim 1, characterized in that: The high voltage electrode layer is in a tubular structure; A PTC ceramic heating element is disposed inside the tubular structure, and the PTC ceramic heating element is connected to the power supply module; or, The interior of the tubular structure is filled with an insulating medium layer.

3. The plasma generator according to claim 1, characterized in that: An insulating dielectric layer is provided on the outer surfaces of the plurality of strip-shaped ground electrodes.

4. A plasma comb, characterized in that: The plasma comb comprises: a comb base; A plurality of comb teeth arranged at intervals on the comb base, wherein the plurality of comb teeth include at least one first comb tooth; The first comb teeth include a columnar electrode structure, and the columnar electrode structure includes, radially outward from the central axis: A high-voltage electrode layer, a dielectric barrier layer, and a ground electrode layer; the dielectric barrier layer surrounds the high-voltage electrode layer; the ground electrode layer is The strips are distributed with gaps on the outer surface of the dielectric barrier layer; A power supply module, wherein the power supply module provides high-voltage pulse excitation to the high-voltage electrode layer and the ground electrode layer, so that air around the ground electrode layer is excited to generate plasma and diffuse outward; The ground electrode layer includes a plurality of strip-shaped ground electrodes arranged around the outer surface of the dielectric barrier layer, and the plurality of strip-shaped ground electrodes are connected end to end to form a "X" shape; the high-voltage electrode layer includes a plurality of strip-shaped high-voltage electrodes arranged around the inner surface of the dielectric barrier layer; The plurality of strip-shaped ground electrodes are evenly spaced and distributed on the outer surface of the dielectric barrier layer; the plurality of strip-shaped high-voltage electrodes are evenly spaced and distributed on the inner surface of the dielectric barrier layer; The plurality of strip-shaped ground electrodes and the plurality of strip-shaped high-voltage electrodes extend along the axial direction of the electrode structure; The plurality of strip-shaped ground electrodes and the plurality of strip-shaped high-voltage electrodes are arranged alternately around the dielectric barrier layer.

5. The plasma comb according to claim 4, characterized in that The high-voltage electrode layer is in a tubular structure; a PTC ceramic heating element is arranged inside the tubular structure, and the PTC ceramic heating element is connected to the power supply module; The plasma comb further comprises: The temperature control module is used to control the temperature of the PTC ceramic heating element.

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