A pulsed plasma generator module

Abstract

The utility model relates to the field of electric plasma generator, concretely is a kind of pulse electric plasma generator module. Through the synergic structure of "double layer metal net+double layer insulating plastic base", the problem of shortening ion tube life caused by triggering arc discharge and electric leakage breakdown caused by improving ion concentration is solved. A kind of pulse electric plasma generator module, characterized by: including electric plasma generator, the electric plasma generator includes plastic base, double layer metal net and sleeve pipe, the inner layer of plastic base is connected with the ion tube electrical terminal sleeve, the outer layer is connected with the ion frame, recess isolation area is formed between inner layer and outer layer, the inner side of sleeve pipe is movably connected with the other end of ion tube, and the outer side is arranged in the ion frame, the double layer metal net is sleeved in ion tube and one end is located in the movable space of sleeve pipe and ion tube, to this way, high concentration ion area is formed by clamping.

Description

Technical Field

[0001] This utility model relates to the field of plasma generators, specifically a pulsed plasma generator module. Background Technology

[0002] Pulsed plasma generator modules are widely used in air purification, industrial sterilization, and material surface modification. Their core function is to ionize the working gas through metal mesh electrodes under high voltage pulses, generating high concentrations of active ions and free radicals.

[0003] Existing pulsed plasma generator modules typically consist of a power supply module, an ion frame, an ion tube, and a single-layer metal mesh. A high-voltage pulse is directly applied between this single-layer metal mesh and the opposing electrode, creating an electron avalanche. This electron avalanche occurs only once and is collected by the metal mesh, limiting the effective ionization region thickness to the single gap distance (d≈1 mm). Under these conditions, it is difficult to achieve a high ion concentration. However, in practical applications, ion concentration directly determines purification efficiency, sterilization intensity, and surface modification depth. Therefore, to further increase ion concentration, the voltage must be increased or the pulse width extended. This results in increased power consumption, intensified heat generation, and a higher risk of arc discharge, shortening the ion tube's lifespan. Furthermore, the plastic base typically employs a single-layer solid structure, which usually has sufficient thickness and spacing. However, increasing the voltage or extending the pulse width renders this single-layer solid structure far too thin, leading to short creepage distances and concentrated surface electric fields. This makes it highly susceptible to surface leakage breakdown at the falling edge of the high-voltage pulse, causing localized high-temperature carbonization and further shortening the ion tube's lifespan.

[0004] Therefore, this utility model provides a pulsed plasma generator module that solves the above-mentioned problems caused by increasing ion concentration through the synergistic structure of "double-layer metal mesh + double-layer insulating plastic base". Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a pulsed plasma generator module.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A pulsed plasma generator module includes a plasma generator comprising a plastic base, a double-layer metal mesh, and a sleeve. The inner layer of the plastic base is sleeved with the electrical terminal of the ion tube, and the outer layer is connected to the ion frame, forming a grooved isolation area between the inner and outer layers. The inner side of the sleeve is movably sleeved with the other end of the ion tube, and the outer side is disposed on the ion frame. The double-layer metal mesh is sleeved on the ion tube, with one end located within the movable space between the sleeve and the ion tube, thereby clamping and forming a high-concentration ion region.

[0008] Preferably, it also includes a plastic base and a spindle seat. The plastic base has a double-layer structure, and the spindle seat is fixed to the outside of the ion frame. A power channel is formed between the spindle of the plastic base and the spindle seat.

[0009] Preferably, the plastic base has a three-ring structure on the side where it is sleeved with the ion tube. The height of the three rings increases in a stepped manner from the inside to the outside, and the three ring structures also form three layers of grooves: inner, middle, and outer.

[0010] Preferably, the outer groove of the plastic base makes the solid connecting surface of the plastic base into a U-shaped structure.

[0011] Preferably, the double-layer metal mesh has a porous structure, and the double-layer metal mesh can form a gradient electric field by setting the spacing between the two meshes.

[0012] Preferably, the plastic base, ion tube, double-layer metal mesh, and sleeve form a single high-concentration plasma unit, and the array of single high-concentration plasma units is provided in several groups.

[0013] Preferably, it also includes a clamping ring, a bolt, and a nut. The bolt is located on the side of the ion frame with the sleeve and is fitted with a nut. One end of the clamping ring is located on the double-layer metal mesh, and the other end is located on the bolt.

[0014] Preferably, the clamping ring has a spiral structure and is wound around one end of the double-layer metal tube near the sleeve.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. By replacing the single-layer metal mesh with a double-layer metal mesh, a gradient electric field can be formed by setting the spacing between the two meshes. The inner layer strengthens the local ionization electric field, while the outer layer adjusts the diffusion range. This can improve the overall electric field strength without changing the output capability, while avoiding ion loss caused by excessive local strength. The amount of ions obtained is also greater than that of a single-layer metal mesh, and the stability is significantly better than that of a single-layer metal mesh.

[0017] 2. By setting the plastic base as a three-ring structure, the height of the three rings is raised in a stepped manner from the inside to the outside. The three rings also form three layers of grooves: inner, middle and outer. The outer groove makes the solid connecting surface of the plastic base into a U-shaped structure, which increases the creepage distance of ions along the wall and reduces the concentration of electric field. This makes it very easy for surface leakage and breakdown to occur at the falling edge of the high voltage pulse.

[0018] 3. By spirally winding the clamping ring, the double-layer metal mesh can be further locked with uniform binding force, which solves the problems of the distance between the double-layer metal mesh and the ion tube, and the relative positional offset between the two layers of mesh. It also improves the axial stability of the double-layer metal mesh in each high-concentration plasma unit by fixing the clamping ring to form a rigid connection. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the shaft seat and plastic base of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the plastic base of this utility model;

[0024] Figure 5 This is a partial schematic diagram of the present invention;

[0025] Legend: 1. Power module; 2. Ion frame; 3. Ion tube; 41. Shaft seat; 42. Plastic base; 51. Sleeve; 52. Double-layer metal mesh; 53. Hoop; 54. Bolt; 55. Nut. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0027] Example 1:

[0028] Since existing pulsed plasma generator modules typically apply high-voltage pulses to the single-layer metal mesh, increasing the voltage or extending the pulse width to meet the high concentration of ions will lead to increased power consumption, aggravated heat generation, and easy triggering of arc discharge, thus shortening the lifespan of the ion tube.

[0029] In this regard, refer to Figures 1 to 3 As shown, this embodiment provides a pulsed plasma generator module, including a plasma generator. The plasma generator includes a plastic base 42, a double-layer metal mesh 52, and a sleeve 51. The inner layer of the plastic base 42 is sleeved with the electrical terminal of the ion tube 3, and the outer layer is connected to the ion frame 2. A groove isolation area is formed between the inner and outer layers. The inner side of the sleeve 51 is movably sleeved with the other end of the ion tube 3, and the outer side is located on the ion frame 2. The double-layer metal mesh 52 is sleeved on the ion tube 3, with one end located in the movable space between the sleeve 51 and the ion tube 3, thereby forming a high-concentration ion area; used to solve the problems caused by increasing the ion concentration.

[0030] Specifically, in the prior art, the plasma generator includes a power module 1, an ion frame 2, an ion tube 3, and a single-layer metal mesh. The ion frame 2 is made of 304 stainless steel, which can better protect the ion tube 3 during transportation. The power module 1 mainly outputs high-voltage electricity that meets the energy threshold of gas ionization, and transmits electrical energy to the ion tube 3. Corona discharge occurs inside the ion tube 3, causing molecules in the surrounding air (such as O2 and N2) to be broken down, forming plasma containing positive ions, negative ions, and free electrons. The single-layer metal mesh is conductive and is placed on the outside of the ion tube 3. On the one hand, it enhances the electric field strength around the ion tube 3, helping to improve the ionization efficiency; on the other hand, it guides the directional diffusion of plasma through its porous structure, reducing random escape, and suppressing excessive local accumulation of plasma, maintaining the stable existence of plasma in the target area. Therefore, in order to increase the ion concentration, in this embodiment, the single-layer metal mesh of the plasma generator is replaced with a double-layer metal mesh. The mesh 52, fitted onto the surface of the ion tube 3, forms a gradient electric field through the spacing between the two meshes. The inner layer strengthens the local ionization electric field, while the outer layer adjusts the diffusion range. This not only increases the overall electric field strength without changing the output capacity but also avoids ion loss caused by excessive local strength. The amount of ions obtained is also greater than that of a single-layer metal mesh, and the stability is significantly better than that of a single-layer mesh. In addition, the double-layer metal mesh 52 is fitted between the sleeve 51 and the ion tube 3 and tightened by the sleeve 51. Specifically, the sleeve 51 is made of silicone. While tightening the double-layer metal mesh 52, it also provides a certain amount of friction, thus ensuring better operation of the double-layer metal mesh 52 and preventing the double-layer metal mesh 52 from shaking and causing changes in the spacing between the inner and outer meshes or the distance from the ion tube 3, maintaining the "gradient electric field". The tightened end is far away from the power input end of the ion tube 3. The purpose of this setting is that since the power input end of the ion tube 3 is the high-voltage input point, the electric field strength is the highest (directly affecting the ionization efficiency). The clamping end is far away from the power receiving end, which can avoid local deformation caused by structural compression in the clamping part (such as the contact point between the sleeve 51 and the metal mesh), which would interfere with the strong electric field distribution of the power receiving end, prevent problems such as electric field distortion and local breakdown, and ensure the stability of the core ionization region of the ion tube 3.

[0031] While the above-mentioned method can increase ion concentration through a double-layer mesh, it still cannot overcome the problem caused by the short creepage distance between the ion tube 3 and the power module 1. Therefore, this embodiment also proposes a plastic base 42 and a shaft seat 41. Specifically, the plastic base 42 has a double-layer structure, as shown in the reference... Figure 4As shown, the side of the plastic base 42 that is fitted with the ion tube 3 has a three-ring structure inside. The height of the three rings increases in a stepped manner from the inside to the outside. The three rings also form inner, middle, and outer grooves. The inner layer of the plastic base 42 has a circular hole at its center to provide a power connection channel for the ion tube 3. The middle groove matches the diameter of the ion tube 3 and engages with the power terminal of the ion tube 3. The outer groove makes the solid connecting surface of the plastic base 42 a U-shaped structure, increasing the creepage distance of the ions along the wall and reducing electric field concentration. This prevents surface leakage and breakdown problems that can easily occur at the falling edge of a high-voltage pulse. The other side of the plastic base 42 also has a raised frustum with an octagonal groove inside. The core seat 41 is externally fixed to the ion frame 2, and the core seat 41 is internally sleeved with a frustum. The core seat 41 also has a through hole at its center to provide a power channel. A power channel is formed between the plastic base 42 and the core seat 41. Therefore, the through hole of the core seat 41 and the octagonal groove and round hole of the plastic base 42 form a sealed snap-fit, which can isolate the external environment from interference to the electrical terminals of the ion tube 3 and the power module 1. Therefore, in this example, a single high-concentration plasma unit is formed by the plastic base 42, a single ion tube 3, a double-layer metal mesh 52, and a sleeve 51. To be applicable to various scenarios, such as air purification and industrial sterilization, several groups of single high-concentration plasma units can be arrayed. In this embodiment, refer to... Figures 1-2 It is equipped with two sets of upper and lower arrays, each set with four high-concentration plasma units. However, in order to adapt to different scenarios and needs, it is not limited to the two sets in this example. The number of high-concentration plasma units can be increased as needed.

[0032] Example 2:

[0033] While the above embodiments can secure the double-layer metal mesh 52 with the sleeve 51, providing a basic fixation, mechanical vibrations or gas blowing in industrial environments can cause shifts in the distance between the double-layer metal mesh 52 and the ion tube 3, and in the relative position between the two meshes. These minute displacements disrupt the "gradient electric field" distribution. Therefore, refer to... Figure 5This embodiment also includes a clamping ring 53, a bolt 54, and a nut 55. Each individual high-concentration plasma unit is equipped with a clamping ring 53, a bolt 54, and a nut 55. The bolt 54 is located on the side of the ion frame 2 where the sleeve 51 is located. The bolt 54 extends through the ion frame 2 to the top of the ion tube 3. One end of the clamping ring 53 is located on the double-layer metal mesh 52, and the other end is located on the bolt 54, which is limited by the nut 55 through threads. Specifically, the clamping ring 53 has a spiral structure and is spirally wound around the end of the double-layer metal tube near the sleeve 51. The winding can further lock the double-layer metal mesh 52 with uniform binding force, solving the problems of lateral spacing between the double-layer metal mesh 52 and the ion tube 3, and relative positional offset between the two layers of mesh. The other end of the clamping ring 53 is fitted onto the bolt 54, and the other end of the clamping ring 53 is tightened by the nut 55, so that the clamping ring 53 is fixed to form a rigid connection, improving the axial stability of the double-layer metal mesh 52 in each individual high-concentration plasma unit. Each individual high-concentration plasma unit can firmly lock the double-layer metal mesh 52 through the clamping ring 53.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A pulsed plasma generator module, characterized in that... The system includes a plasma generator, which comprises a plastic base, a double-layer metal mesh, and a sleeve. The inner layer of the plastic base is connected to the electrical terminal of the ion tube, and the outer layer is connected to the ion frame. A groove isolation area is formed between the inner and outer layers. The inner side of the sleeve is movably connected to the other end of the ion tube, and the outer side is located on the ion frame. The double-layer metal mesh is sleeved on the ion tube, with one end located within the movable space between the sleeve and the ion tube, thereby forming a high-concentration ion zone.

2. The pulsed plasma generator module according to claim 1, characterized in that... It also includes a plastic base and a spindle seat. The plastic base has a double-layer structure, and the spindle seat is externally fixed to the ion frame. A power channel is formed between the plastic base and the spindle seat.

3. A pulsed plasma generator module according to claim 2, characterized in that... The plastic base has a three-ring structure on one side, and the height of the three rings increases in a stepped manner from the inside to the outside. The three rings also form three layers of grooves: inner, middle and outer.

4. A pulsed plasma generator module according to claim 3, characterized in that... The outer groove of the plastic base has a U-shaped structure.

5. A pulsed plasma generator module according to claim 1, characterized in that... The double-layer metal mesh has a porous structure, and a gradient electric field can be formed by setting the spacing between the two meshes.

6. A pulsed plasma generator module according to claim 4, characterized in that... The plastic base, ion tube, double-layer metal mesh, and sleeve form a single high-concentration plasma unit, and the array of single high-concentration plasma units is provided in several groups.

7. A pulsed plasma generator module according to claim 1, characterized in that... It also includes a clamping ring, a bolt, and a nut. The bolt is located on one side of the ion frame and fitted with a nut. One end of the clamping ring is located on the double-layer metal mesh, and the other end is located on the bolt.

8. A pulsed plasma generator module according to claim 7, characterized in that... The clamping ring has a spiral structure and is wrapped around one end of the double-layer metal tube near the sleeve.

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