Plasma generator

Abstract

The utility model discloses a plasma generator, and belongs to the technical field of isothermal plasma. Which comprises a positive electrode and a negative electrode, the positive electrode (4) comprises a positive electrode tube body, the negative electrode comprises a negative electrode tube body, and is characterized in that metal films are arranged on the inner walls of the positive electrode tube body and the negative electrode tube body, and the inner end of a positive electrode lead extends to the center of the positive electrode tube body and is electrically connected with the metal films through a power connection point; and the inner end of the negative electrode lead extends to the center of the negative electrode tube body and is electrically connected with the metal film through a power connection point. In the plasma generator, the metal film is arranged on the inner wall of the electrode tube body, and the electrode lead is electrically connected with the metal film at the center of the metal film, so that the current shunting effect is realized, and the problem of tube explosion caused by over-high temperature rise due to the resistance of the metal film when the positive electrode lead is connected with the end part of the metal film is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to a plasma generator and belongs to the technical field of isothermal plasma. BACKGROUND

[0002] Plasma is an ionized gas as a whole, which is electrically neutral, and is composed of electrons, positive and negative ions, free radicals, ground state or excited state molecules, etc. Plasma has the advantages of high energy and rich active ingredients. The effect of plasma on organisms and harmful gases is also mainly achieved through the comprehensive action of these bactericidal components at the molecular level.

[0003] The main working principle of the plasma generator is that the positive high voltage and the negative high voltage are connected to the positive electrode and the negative electrode respectively, a large number of positive ions and negative ions are generated by ionizing air through the positive high voltage and the negative high voltage, and a huge energy release is generated in the moment of neutralization of positive and negative charges in the air, so as to cause the change of the structure of the bacteria around or the conversion of the energy, thereby causing the death of the bacteria and realizing the sterilization effect.

[0004] In the prior art, the application of the present application is a Chinese utility model patent (application number 202322599299.4) entitled "Plasma generator and fixed insulation bridge of electrode thereof" filed on September 5, 2023, which discloses a technical solution. In the technical solution, the positive electrode and the negative electrode generally include an electrode tube made of insulating material (such as quartz), the electrode tube is filled with metal conductive powder in the inner cavity of the electrode tube, and an electrode lead is arranged at the center of the electrode tube. The electrode lead is electrically connected with the metal powder in the inside of the electrode tube, and the electrode lead is connected with the external positive high voltage (or negative high voltage) after being led out from the pipe opening of the electrode tube. The problem of the above technical solution is that after the electrode tube is filled with metal conductive powder, the resistance of the electrode tube is large, the temperature is high during work, and the electrode tube is prone to be blown.

[0005] To solve the above problems, the existing technical solution is to set a metal coating on the inner wall of the metal tube to solve the problem of filling metal powder, such as the technical solution disclosed in the Chinese invention patent with the application number 202111509907.7 and the application date of December 10, 2021, and the patent name "Dielectric barrier discharge plasma generator". However, the problem of the technical solution is that the starting end of the electrode lead and the metal coating has a certain resistance, so there is a risk of tube explosion due to excessive heating. UTILITY MODEL CONTENT

[0006] The utility model wants to solve the technical problem: overcome the prior art's insufficient, provide a kind of through the inner wall of electrode tube body and set up metal film, electrode lead wire is electrically connected with its center at metal film, current shunting effect is realized, avoid positive electrode lead wire and the end connection of metal film, because the resistance of metal film itself causes temperature to be too high and appears the problem such as tube explosion of plasma generator.

[0007] The utility model solves the technical problems and adopts the technical scheme that: the plasma generator, including positive electrode and negative electrode, the positive electrode includes positive electrode tube body, and the negative electrode includes negative electrode tube body, and the positive electrode lead wire is led out from the pipe mouth of the positive electrode tube body, and the negative electrode lead wire is led out from the pipe mouth of the negative electrode tube body, characterized by: metal film is arranged on the inner wall of the positive electrode tube body and the negative electrode tube body, and the inner end of the positive electrode lead wire is extended to the center of the positive electrode tube body and electrically connected with the metal film through the electric connection point, and the inner end of the negative electrode lead wire is extended to the center of the negative electrode tube body and electrically connected with the metal film through the electric connection point.

[0008] Preferably, the shell is provided with an opening at the upper end, and a disc head flange and a fixed tailstock are arranged at both ends of the shell respectively, and the two ends of the positive electrode and the negative electrode penetrate through the disc head flange and the fixed tailstock respectively and are fixed.

[0009] Preferably, waterproof covers are arranged on the inner end faces of the disc head flange and the fixed tailstock respectively, and the waterproof covers extend horizontally to the inside of the shell.

[0010] Preferably, an outer sleeve is arranged at the opening of the disc head flange, an inner lining pipe is arranged at the center of the outer sleeve, and the pipe mouth of the positive electrode tube body or the negative electrode tube body penetrates through the outer sleeve and the inner lining pipe.

[0011] Preferably, an insulating column is fixed on the outer end face of the disc head flange, and the positive electrode tube body and the negative electrode tube body penetrate through the disc head flange and enter the insulating column.

[0012] Preferably, an electric connection cap is arranged on the outer end face of the insulating column, and the positive electrode lead wire and the negative electrode lead wire are connected with the corresponding electric connection cap after penetrating through the insulating column.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] In the plasma generator, the metal film is arranged on the inner wall of the electrode tube body, and the electrode lead wire is electrically connected with the center of the metal film, so that the current shunting effect is realized, and the problem of tube explosion caused by the high temperature due to the resistance of the metal film itself when the positive electrode lead wire is connected with the end of the metal film is avoided.

[0015] Waterproof covers are also provided on the inner end faces of the pan head flange and the fixed tail bracket. The waterproof covers at both ends extend horizontally into the inner side of the shell to shield the fixing points of the positive and negative electrodes, thus avoiding the disadvantage that water vapor and impurities in the air in the environment can easily cause ionization at the fixing points of the positive and negative electrodes.

[0016] In this plasma generator, the electrode tube body is fixed by an outer tube and an inner liner tube spaced apart. The electrode tube body is located between the inner liner tube and the outer tube, and an insulating structure is formed at the ends of the electrode, the inner liner tube, and the outer tube, which has better insulation performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a plasma generator.

[0018] Figure 2 This is a schematic diagram of the positive electrode structure of a plasma generator.

[0019] Figure 3 This is a schematic diagram of the negative electrode structure of a plasma generator.

[0020] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0021] Figure 5 for Figure 1 Enlarged view of section B in the middle.

[0022] Figure 6 for Figure 2 Enlarged view of point C in the middle.

[0023] The components include: 1. Pan flange; 2. Insulating column; 3. Waterproof cover; 4. Positive electrode; 5. Housing; 6. Negative electrode; 7. Fixed tail frame; 8. Positive electrode lead wire; 9. Positive electrode tube body; 10. Negative electrode lead wire; 11. Negative electrode tube body; 12. Electrical cap; 13. Outer tube; 14. Inner liner tube; 15. Electrical contact point; 16. Metal film. Detailed Implementation

[0024] Figures 1-6 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-6 The present invention will be further described below.

[0025] like Figure 1As shown, a plasma generator includes a shell 5 with an open upper end. One end of the shell 5 is sealed by a flange 1 for air intake, and the other end is sealed by a fixed tailstock 7. Waterproof covers 3 are respectively provided on the inner end faces of the flange 1 and the fixed tailstock 7. The waterproof covers 3 at both ends extend horizontally into the inside of the shell 5 to shield the fixing points of the positive electrode 4 and the negative electrode 6, thus avoiding the disadvantage of water vapor and impurities in the air easily causing ionization at the fixing points of the positive electrode 4 and the negative electrode 6.

[0026] Several positive electrodes 4 are arranged side by side inside the housing 5, and several negative electrodes 6 are arranged side by side below the positive electrodes 4. One end of the positive electrodes 4 and the negative electrodes 6 passes through the fixed tail bracket 7, and the fixed tail bracket 7 fixes one end of the positive electrodes 4 and the negative electrodes 6. One end of the positive electrodes 4 and the negative electrodes 6 passes through the pan head flange 1, and the pan head flange 1 fixes the other end of the positive electrodes 4 and the negative electrodes 6.

[0027] like Figures 2-3 As shown, the positive electrode 4 includes a positive electrode tube 9, which is bent radially vertically at both ends and then bent axially a second time. The negative electrode 6 includes a negative electrode tube 11, which has a straight structure. Therefore, when the positive electrode 4 and the negative electrode 6 are fixed by the fixing tail bracket 7 and the pan flange 1, the fixing points of the positive electrode 4 and the negative electrode 6 are arranged vertically, avoiding the potential problems caused by the small distance between the positive electrode 4 and the negative electrode 6. Furthermore, the bends at both ends of the positive electrode 4 are gentler, eliminating the need for vertical bending, and the stress on the bends of the positive electrode tube 9 is smaller, resulting in a longer service life.

[0028] A positive electrode lead 8 is provided at the center inside the positive electrode tube 9, and a negative electrode lead 10 is provided inside the negative electrode tube 11. One end of the positive electrode lead 8 is led out from the tube opening of the positive electrode tube 9, and similarly, one end of the negative electrode lead 10 is led out from the tube opening of the negative electrode tube 11.

[0029] In both the positive electrode tube 9 and the negative electrode tube 11, a primary metal film 16 is deposited on their respective inner walls using a deposition process, combined with... Figure 6The positive electrode lead 8 extends along the axis of the positive electrode tube 9 inside the tube 9 to the center of the tube 9, forming a contact point 15 at the center. This contact point 15 contacts the metal film 16 on the inner wall of the tube 9, achieving electrical connection. Since the contact point 15 between the positive electrode lead 8 and the metal film 16 is located in the middle of the tube 9, when the positive electrode lead 8 is connected to an external high-voltage power supply, current shunting is achieved at the metal film 16. This prevents the tube from overheating and bursting due to the resistance of the metal film 16 when the positive electrode lead 8 is connected to its end. The negative electrode lead 10 is connected to the metal film 16 inside the negative electrode tube 11 in the same way as the positive electrode 4, with the contact point 15 located at the center of the negative electrode tube 11. Further details are omitted.

[0030] An insulating column 2 is provided on the surface of the pan flange 1. The insulating column 2 and the outer surface of the pan flange 1 form three cavities. All positive electrodes 4 are connected to the positive electrode cavity at the top, and all negative electrodes 6 are connected to the negative electrode cavity at the bottom. The cavity in the middle of the surface of the insulating column 2 and the pan flange 1 is a fixing cavity. The fixing bolt passes through the fixing cavity from the outside of the insulating column 2 and is threaded to the pan flange 1 to fix the insulating column 2.

[0031] like Figure 4 As shown, a junction cap 12 is provided on the outside of the positive electrode chamber. The positive electrode leads 8, which are led out from the positive electrode tube 9, pass through the insulating post 2 and are connected to the junction cap 12. The positive terminal of the external high-voltage power supply is introduced into the positive electrode 4 through the junction cap 12. Similarly, another junction cap 12 is provided on the outside of the positive electrode chamber. The negative electrode leads 10, which are led out from the negative electrode tube 11, pass through the insulating post 2 and are connected to the corresponding junction cap 12. The negative terminal of the external high-voltage power supply is introduced into the negative electrode 6 through the junction cap 12. Therefore, in this plasma generator, the leads of the positive electrode 4 and the negative electrode 6 are led out from the same end of the housing 5, avoiding the inconvenience of external wiring caused by the prior art, which requires the leads of the positive electrode 4 and the negative electrode 6 to be led out from the two ends of the housing 5 respectively (such as the technical solution recorded in Chinese invention patent application number 202322599299.4, application date September 5, 2023, patent name "A Plasma Generator and a Fixed Insulating Bridge for its Electrodes").

[0032] Further integration Figure 5At the position where the positive electrode tube 9 passes through the pan flange 1, an outer sleeve 13 and an inner liner 14 are fitted at the opening of the pan flange 1. The positive electrode tube 9 passes through the gap between the outer sleeve 13 and the inner liner 14. The negative electrode tube 11 is fixed using the same structure. In this plasma generator, the tube bodies of the electrode tubes (positive electrode tube 9 and negative electrode tube 11) are fixed using a structure with the outer sleeve 13 and the inner liner 14 spaced apart. The tube bodies of the electrode tubes are positioned between the inner liner 14 and the outer sleeve 13, forming an insulating structure at the ends of the electrode, the inner liner 14, and the outer sleeve 13, resulting in better insulation performance.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A plasma generator, comprising a positive electrode (4) and a negative electrode (6), the positive electrode (4) comprising a positive electrode tube (9), the negative electrode (6) comprising a negative electrode tube (11), a positive electrode lead (8) extending from the opening of the positive electrode tube (9), and a negative electrode lead (10) extending from the opening of the negative electrode tube (11), characterized in that: Metal films (16) are arranged on the inner walls of both the positive electrode tube (9) and the negative electrode tube (11). The inner end of the positive electrode lead (8) extends to the center of the positive electrode tube (9) and is electrically connected to the metal film (16) through the contact point (15). The inner end of the negative electrode lead (10) extends to the center of the negative electrode tube (11) and is electrically connected to the metal film (16) through the contact point (15).

2. The plasma generator according to claim 1, characterized in that: The housing (5) is provided with an opening at the top. A pan flange (1) and a fixed tail frame (7) are provided at both ends of the housing (5). The positive electrode (4) and the negative electrode (6) pass through the pan flange (1) and the fixed tail frame (7) respectively and are fixed.

3. The plasma generator according to claim 2, characterized in that: Waterproof covers (3) are provided on the inner end faces of the pan flange (1) and the fixed tail bracket (7), and the waterproof covers (3) extend horizontally to the inner side of the shell (5).

4. The plasma generator according to claim 2, characterized in that: An outer sleeve (13) is provided at the opening of the pan flange (1), and an inner liner (14) is provided at the center of the outer sleeve (13). The port of the positive electrode tube (9) or the negative electrode tube (11) passes through the outer sleeve (13) and the inner liner (14).

5. The plasma generator according to any one of claims 2 to 4, characterized in that: An insulating column (2) is fixed on the outer end face of the pan head flange (1). The positive electrode tube (9) and the negative electrode tube (11) pass through the pan head flange (1) and enter the insulating column (2).

6. The plasma generator according to claim 5, characterized in that: A grounding cap (12) is provided on the outer end face of the insulating column (2). The positive electrode lead (8) and the negative electrode lead (10) pass through the insulating column (2) and are connected to the corresponding grounding cap (12).

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