CN216565690U - Discharge electrode structure and plasma generating device - Google Patents

Abstract

The utility model provides a discharge electrode structure and a plasma generating device, wherein the discharge electrode structure comprises at least one discharge unit, and the discharge unit comprises: an insulating layer; a built-in electrode disposed on an inner surface of the insulating layer; and/or an external electrode disposed on an outer surface of the insulating layer; when the air to be purified passes through the inner surface, the built-in electrode can discharge on the inner surface after being electrified so as to adsorb gaseous pollutants in the air to be purified; when the air to be purified passes through the outer surface, the external electrodes can discharge electricity on the outer surface to adsorb gaseous pollutants in the air to be purified. Based on the technical scheme of the utility model, the built-in electrode and the external electrode can discharge simultaneously, so that the inner surface and the outer surface of the insulating layer form a discharge surface simultaneously. Thereby increasing the contact area and the contact time of the air to be purified and the discharge electrode structure. The problem of the relatively poor effect of organic pollutant in the air purification among the correlation technique is solved.

Description

Discharge electrode structure and plasma generating device

Technical Field

The utility model relates to the technical field of dust removal devices, in particular to a discharge electrode structure and a plasma generating device.

Background

At present, along with the aggravation of pollution, various air purification technologies are operated, and the purification technologies are not limited to two types, namely a consumable type requiring a consumer to continuously replace a purification part and a non-consumable type requiring no replacement of the consumer. The consumable type is low in price in the early stage, the cost in the using process is high, the cost in the early stage of the non-consumable type is high, and the cost is not required to be invested by a consumer in the single later stage. On the whole, the consumable-free purification technology is lower in cost, more energy-saving and environment-friendly, and meets the national energy-saving and environment-friendly concept requirements. However, the existing consumable-free purification technology can not be basically used for the purification requirement of removing organic pollutants such as automobile exhaust, smoke gas and the like.

That is, the dust removing apparatus in the related art has a problem of poor effect of purifying organic pollutants in the air.

SUMMERY OF THE UTILITY MODEL

To the problem among the above-mentioned prior art, this application has proposed a discharge electrode structure, has solved the relatively poor problem of organic pollutant effect in the dust collector air-purifying.

The discharge electrode structure of the present invention includes at least one discharge cell, the discharge cell including: an insulating layer; a built-in electrode disposed on an inner surface of the insulating layer; and/or an external electrode disposed on an outer surface of the insulating layer; when the air to be purified passes through the inner surface, the built-in electrode can discharge on the inner surface after being electrified so as to adsorb gaseous pollutants in the air to be purified; when the air to be purified passes through the outer surface, the external electrodes can discharge electricity on the outer surface to adsorb gaseous pollutants in the air to be purified.

In one embodiment, when the discharge electrode structure includes a plurality of discharge cells, the plurality of discharge cells are arranged in a matrix structure. Through this embodiment, set up a plurality of discharge unit, a plurality of discharge unit can work simultaneously, get rid of gaseous pollutant simultaneously. Thereby improving the decontamination efficiency of the plasma generation device.

In one embodiment, the built-in electrode is a conductive material, and the built-in electrode has a spiral structure or a net structure. By the embodiment, the spiral structure or the net structure can increase the contact area and the contact time of the air to be purified and the discharge electrode structure. And further, the decontamination efficiency of the plasma generator is improved so as to meet the functional requirement of the plasma generator device for efficiently removing gaseous pollutants.

In one embodiment, the built-in electrodes are disposed on the inner surface in a winding or etched manner.

In one embodiment, the external electrode is made of a conductive material, and the external electrode is in a spiral structure or a net structure. By the embodiment, the spiral structure or the net structure can increase the contact area and the contact time of the air to be purified and the discharge electrode structure. And further, the decontamination efficiency of the plasma generator is improved so as to meet the functional requirement of the plasma generator device for efficiently removing gaseous pollutants.

In one embodiment, the external electrodes are disposed on the outer surface in a wound or etched manner.

In one embodiment, the insulating layer has a ring-shaped cross-section. With this embodiment, the ring structure has inner and outer surfaces that ensure that the inner and outer electrodes can discharge simultaneously, with the inner and outer surfaces forming the discharge surfaces. Thereby increasing the contact area and the contact time of the air to be purified and the discharge electrode structure. Thereby improving the decontamination efficiency of the plasma generating device.

In one embodiment, the internal electrode and/or the external electrode are made of carbon fiber or metal conductive material. According to the embodiment, the carbon fiber, namely the activated carbon fiber has the characteristics of large specific surface area, more micropores, small resistivity, corrosion resistance and the like, so that the corona onset voltage in the plasma discharge process is lower, the defect of high ozone concentration of the plasma under the same condition is overcome, and the decontamination efficiency of the plasma generating device is improved. Meanwhile, the flexible characteristic of the carbon fiber is utilized to facilitate the carbon fiber to be designed into any required electrode shape, so that the manufacturing difficulty of the electrode is reduced, and the manufacturing cost of the electrode is reduced.

In one embodiment, the discharge lamp further comprises a fixing structure connected with the discharge unit for fixing the discharge unit. Through this embodiment, fixed knot constructs has the fixed action for fix the discharge cell in the plasma generating device to satisfy the installation requirement of discharge cell, and then ensure that plasma generating device can normally work.

The utility model also provides a plasma generating device which comprises a power supply and the discharge electrode structure, wherein the power supply is electrically connected with the discharge electrode structure.

The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the utility model is achieved.

Compared with the prior art, the discharge electrode structure and the plasma generating device provided by the utility model at least have the following beneficial effects:

(1) the internal electrode and the external electrode are capable of discharging simultaneously, such that the inner and outer surfaces of the insulating layer simultaneously form a discharge surface. Thereby increasing the contact area and the contact time of the air to be purified and the discharge electrode structure. And further, the decontamination efficiency of the plasma generating device is improved so as to meet the functional requirement of the plasma generating device for efficiently removing gaseous pollutants. And the problem of poor effect of removing organic pollutants by equipment in the related art is solved. In addition, the internal electrode is arranged, and the internal electrode and the external electrode are matched for use, so that the decontamination efficiency of the plasma generating device is improved.

(2) The power supply provides electric energy for the plasma generating device, and dust can be removed normally after the discharge electrode structure is electrified. Therefore, the plasma generating device has the function of discharging and dedusting, and the air can be purified.

Drawings

The utility model will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 is a schematic perspective view showing a discharge electrode structure according to a first embodiment of the present invention (the direction of the arrow is an air inlet direction);

FIG. 2 shows a schematic view (from a top view) of another angle of the discharge electrode structure of FIG. 1;

FIG. 3 shows a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 shows an enlarged view at B in FIG. 3;

FIG. 5 is a schematic view showing a discharge electrode structure according to a second embodiment of the present invention;

FIG. 6 is a schematic view showing a discharge electrode structure according to a third embodiment of the present invention;

fig. 7 is a schematic block diagram of a plasma generator according to a fourth embodiment of the present invention.

In the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

Reference numerals:

10. a discharge unit; 11. an insulating layer; 12. an internal electrode; 13. an external electrode; 20. a fixed structure; 21. An upper end fixing frame; 22. a lower end fixing frame; 100. a discharge electrode structure; 200. a power source.

Detailed Description

The utility model will be further explained with reference to the drawings.

In the present application, the discharge electrode structure is a plasma discharge electrode structure. The gaseous pollutants in the application comprise organic pollutants in the air, including organic pollutants such as automobile exhaust, smoke and the like.

It should be noted that the effect of removing organic pollutants by the consumable-free purification technology in the related art is not ideal, and the main reasons are that the discharge energy is insufficient, the contact area with the organic pollutants is not large enough, the contact time is not long enough, and the like.

As shown in fig. 1, the present invention provides a discharge electrode structure, wherein the discharge electrode structure 100 includes at least one discharge cell 10, and the discharge cell 10 includes an insulating layer 11, an internal electrode 12 and/or an external electrode 13. Wherein the built-in electrode 12 is provided on the inner surface of the insulating layer 11. The external electrode 13 is disposed on the outer surface of the insulating layer 11. When the air to be purified passes through the inner surface, the built-in electrode 12 can discharge electricity on the inner surface to adsorb gaseous pollutants in the air to be purified. When the air to be purified passes through the outer surface, the external electrodes 13 can discharge electricity on the outer surface to adsorb gaseous pollutants in the air to be purified.

In the above arrangement, the internal electrode 12 and the external electrode 13 can discharge simultaneously, so that the inner and outer surfaces of the insulating layer 11 simultaneously form a discharge surface. Thereby increasing the contact area and the contact time of the air to be purified and the discharge electrode structure. And further, the decontamination efficiency of the plasma generating device is improved so as to meet the functional requirement of the plasma generating device for efficiently removing gaseous pollutants. And the problem of poor effect of removing organic pollutants by equipment in the related art is solved.

In addition, the internal electrode 12 is arranged, and the internal electrode 12 and the external electrode 13 are matched for use, so that the decontamination efficiency of the plasma generating device is improved.

It should be noted that, compared with the plasma generating device in the related art, the plasma generating device in the present application reduces the discharge voltage and the discharge power consumption, thereby saving the use cost of the plasma generating device.

Example one

Specifically, as shown in fig. 1 to 4, the discharge electrode structure 100 includes a discharge cell 10, and the discharge cell 10 includes an insulating layer 11, an internal electrode 12, and an external electrode 13. Wherein the internal electrode 12 is disposed on an inner surface of the insulating layer 11, and the external electrode 13 is disposed on an outer surface of the insulating layer 11.

Specifically, as shown in fig. 1 to 4, in one embodiment, the discharge electrode structure includes a plurality of discharge cells 10, and the plurality of discharge cells 10 are arranged in a matrix structure.

In the above arrangement, a plurality of discharge cells 10 are provided, and the plurality of discharge cells 10 can be operated simultaneously while removing gaseous pollutants. Thereby improving the decontamination efficiency of the plasma generation device.

Alternatively, as shown in fig. 1 to 4, in one embodiment, the plurality of discharge cells 10 are arranged in a matrix structure of 6 rows × 4 columns.

Of course, in alternative embodiments not shown in the drawings of the present application, the plurality of discharge cells 10 may be arranged in other forms of matrix structures, such as a circumferential matrix or a cross matrix. Wherein the cross matrix may comprise an "X" or "√" type matrix.

Specifically, as shown in fig. 1 to 4, in one embodiment, the built-in electrode 12 is a conductive material, and the built-in electrode 12 has a spiral structure.

In the above arrangement, the helical structure can increase the contact area and the contact time of the air to be purified and the discharge electrode structure. And further, the decontamination efficiency of the plasma generator is improved so as to meet the functional requirement of the plasma generator device for efficiently removing gaseous pollutants.

Of course, in alternative embodiments not shown in the drawings of the present application, the inner electrode 12 may also be provided with other shaped structures, such as a mesh structure.

Specifically, as shown in fig. 1-4, in one embodiment, the built-in electrodes 12 are disposed on the inner surface in a winding weave.

Of course, in an alternative embodiment not shown in the drawings of the present application, the built-in electrodes 12 may be provided on the inner surface in an etched manner.

Specifically, as shown in fig. 1 to 4, in one embodiment, the external electrode 13 is a conductive material, and the external electrode 13 has a spiral structure.

In the above arrangement, the helical structure can increase the contact area and the contact time of the air to be purified and the discharge electrode structure. And further, the decontamination efficiency of the plasma generator is improved so as to meet the functional requirement of the plasma generator device for efficiently removing gaseous pollutants.

Of course, in an alternative embodiment not shown in the drawings of the present application, the external electrodes 13 may be provided on the external surface in an etched manner.

Specifically, as shown in fig. 1 to 4, in one embodiment, the cross-section of the insulating layer 11 is a ring structure.

In the above arrangement, the annular structure has inner and outer surfaces, which ensure that the inner electrode 12 and the outer electrode 13 are able to discharge simultaneously, the inner and outer surfaces forming a discharge surface. Thereby increasing the contact area and the contact time of the air to be purified and the discharge electrode structure. Thereby improving the decontamination efficiency of the plasma generating device.

Specifically, as shown in fig. 1 to 4, in one embodiment, the discharge cells 10 are columnar structures.

Of course, the discharge unit 10 may be configured as a barrel structure according to actual conditions.

Specifically, as shown in fig. 1-4, in one embodiment, the insulating layer 11 is circular in cross-section.

Of course, the cross section of the insulating layer 11 may be set to be other shapes such as a triangular ring or a rectangular ring according to actual conditions.

Note that the cross section in this application means a section perpendicular to the central axis of the insulating layer 11.

Specifically, as shown in fig. 1-4, in one embodiment, carbon fibers are used for both the inner electrode 12 and the outer electrode 13.

In the arrangement, the carbon fiber, namely the activated carbon fiber has the characteristics of large specific surface area, more micropores, small resistivity, corrosion resistance and the like, so that the corona onset voltage in the plasma discharge process is lower, the defect of high ozone concentration of the plasma under the same condition is overcome, and the decontamination efficiency of the plasma generating device is further improved. Meanwhile, the flexible characteristic of the carbon fiber is utilized to facilitate the carbon fiber to be designed into any required electrode shape, so that the manufacturing difficulty of the electrode is reduced, and the manufacturing cost of the electrode is reduced.

It should be noted that plasma discharge needs to reach a certain corona onset voltage, and different electrode structures and materials have different requirements on the corona onset voltage. This application adopts helical configuration's carbon fiber as the electrode, has greatly reduced the corona onset voltage, has also reduced the high-voltage requirement of discharging to the power, under the equal discharge condition, has reduced the corona onset voltage and has just also reduced the ozone of discharge in-process to satisfy the environmental protection requirement.

Of course, the internal electrode 12 and the external electrode 13 may be made of metal conductive material according to practical situations. Such as copper wire.

Specifically, as shown in fig. 1 to 4, in one embodiment, the discharge electrode structure further includes a fixing structure 20, and the fixing structure 20 is connected to the discharge cell 10 for fixing the discharge cell 10.

In the above arrangement, the fixing structure 20 has a fixing function for fixing the discharge unit 10 in the plasma generating device, so as to meet the installation requirement of the discharge unit 10, thereby ensuring that the plasma generating device can normally operate.

Specifically, as shown in fig. 1 to 4, in one embodiment, the fixing structure 20 includes an upper fixing frame 21 and a lower fixing frame 22, the upper fixing frame 21 is disposed opposite to the lower fixing frame 22, and the discharge unit 10 is fixed between the upper fixing frame 21 and the lower fixing frame 22.

Example two

The second embodiment is different from the first embodiment in that:

specifically, as shown in fig. 5, in one embodiment, the discharge electrode structure includes 12 discharge cells 10. The discharge cells are divided into two rows, each row is 6, and the discharge cells 10 in the two rows are arranged in a staggered mode.

The second embodiment is the same as the first embodiment in other structures, and is not described herein again.

EXAMPLE III

The third embodiment is different from the first embodiment in that:

specifically, as shown in fig. 6, in one embodiment, the discharge cell 10 has a shape of a triangular prism having a triangular ring-shaped cross-section.

Of course, the discharge cells 10 may be arranged in other prism shapes such as a quadrangular prism or a hexagonal prism, depending on the actual situation.

Specifically, as shown in fig. 6, in one embodiment, the discharge electrode structure includes 20 discharge cells 10. Wherein the first row includes 9 discharge cells 10 and the second row includes 11 discharge cells 10. Two adjacent discharge cells 10 in each row of discharge cells 10 are arranged in the same direction and form an inverted triangular socket. One discharge unit 10 is inserted upside down in the socket.

The third embodiment is the same as the first embodiment in other structures, and is not described herein again.

Example four

As shown in fig. 7, the present invention also provides a plasma generating apparatus. Which includes a power supply 200 and the discharge electrode structure 100 of any one of the first to third embodiments, the power supply 200 being electrically connected to the discharge electrode structure 100.

In the above arrangement, the power supply 200 provides power to the plasma generator, and the discharge electrode structure 100 can be powered to remove dust normally. Therefore, the plasma generating device has the function of discharging and dedusting, and the air can be purified.

It should be noted that, the utility model generates high-density plasma by using the preferred electrode material (optional carbon fiber) and special structure (optional spiral structure) form, under the condition of small volume and low power consumption, and is used for meeting the energy requirement of plasma for removing organic pollutants. Meanwhile, the optimized discharge design can realize synchronous discharge of two surfaces (the upper surface and the lower surface of the insulating layer 11), and the product targets of large discharge area, long contact time, high efficiency of removing organic pollutants and low power are realized.

The plasma in the related art is generated mainly on the outer surface of the insulating layer, and air hardly contacts with the plasma for a long time and the contact area is very small while flowing through the outer surface. The plasma generating device of the utility model adopts the carbon fiber with the spiral inner layer as the first electrode, the insulating material is adopted in the middle, the outer layer of the insulating material can be made into a discharge structure by adopting a conductive material, and the discharge structure forms the most basic plasma discharge unit body (discharge unit 10).

The plasma discharge unit body can adopt various shapes such as a barrel shape, a cylindrical shape, a prism shape and the like, and the protection scope of the utility model is only to realize the internal discharge in the geometric shape. Cylindrical discharge structures are preferred in the present invention.

The built-in electrode 12 of the utility model adopts the activated carbon fiber, and utilizes the characteristics of large specific surface area, more micropores, small resistivity, corrosion resistance and the like of the activated carbon fiber to meet the requirements of low corona onset voltage in the plasma discharge process and realize low ozone concentration and low power under the same condition. Meanwhile, the flexible characteristic of the carbon fiber is utilized to conveniently design into any needed electrode shape.

It should be noted that other conductive materials and metal materials that can achieve the carbon fiber performance can be used for the internal electrode 12 of the present invention, and carbon fiber materials or nano-scale metal wire materials are preferably used in the present application.

The utility model adopts a single carbon fiber bundle structure with the diameter of 0.07 nanometer, wherein one bundle of the carbon fibers comprises 50-1000 carbon fiber filaments, and the carbon fibers are arranged on the inner surface of the insulating layer 11 in a spiral structure or can be arranged on the inner surface of the insulating layer 11 in a cross weaving mode. The built-in electrode 12 of the present invention can also be a metal mesh woven by nano-scale metal wires or a nano conductive material etched on the inner surface of the insulating layer 11 as a first electrode.

The outermost layer of the utility model is a conductive material arranged on the outer side (outer surface) of the insulating layer 11, and the conductive material can adopt a metal net structure, can be spirally wound on the outer side of the insulating layer 11, and can also be nano-scale carving realized by adopting similar materials.

The inner electrode and the outer electrode of the utility model are preferably made of carbon fiber materials, the carbon fiber materials are spirally wound, and a single plasma unit (the discharge unit 10) adopts a columnar discharge mode.

The utility model adopts an array mode, and adopts various combination modes such as a transverse mode (a first direction in figure 2), a longitudinal mode (a second direction in figure 2) and a cross array mode, so that the utility model can meet the application of any shape and volume. The diameter of single discharge of the electrode with the spiral structure can reach 0.08mm, the electrode is very thin, a cross array can be arranged for increasing protection points, and a weaving mode can be adopted for increasing the area.

The utility model needs the polluted air (air to be purified) to pass through the plasma generating device, the polluted air is efficiently contacted with the plasma in the device, the contact area and time of the plasma and the polluted air are improved, and the purification effect of organic pollutants in the air is greatly improved.

The discharge electrode structure and the plasma generating device have the following characteristics:

1. the discharge surface is internally arranged, the built-in discharge electrode adopts nano-grade fibers, the nano-fibers are arranged in the insulating layer, the outer surface discharge electrode adopts conductive materials, the whole discharge device forms small discharge units (discharge units 10), and a plurality of groups of discharge units are arranged in a staggered mode to form a large-area and large-volume discharge device.

2. The built-in discharge electrode (built-in electrode 12) is arranged in the insulating layer 11, the built-in discharge electrode is preferably made of nano-grade materials, and the built-in discharge electrode is made of carbon fiber materials which are large in discharge surface area and provided with a plurality of micropores on the surface of the discharge electrode;

3. the built-in discharge electrodes are preferably arranged in a spiral structure with equal intervals, can also adopt meshes or other interlaced meshes and the like, and are mainly used for forming intricate discharge surfaces on the inner surface;

4. the external electrode 13 is made of metal material or discharge material similar to metal material, the material can be a woven metal mesh or an etching mode to form an external discharge surface, a high-voltage breakdown resistant insulating layer 11 with certain thickness is adopted between the internal discharge surface and the external discharge surface, polytetrafluoroethylene is preferred, and the thickness of the insulating layer 11 is preferably 10 nanometers;

5. the carbon fiber selects a fiber bundle consisting of nano-scale fiber filaments as an electrode, a single fiber filament selects the nano-scale fiber filaments with smooth surface and uniform thickness, and preferably 1 bundle of the built-in electrode 12 which comprises 50 carbon fiber filaments and forms a spiral shape is selected;

6. an alternating-current variable-frequency power supply is adopted, the discharge voltage is 300V to 2000V, and the frequency is in the range of 5khz to 35 khz;

7. the polluted air (air to be purified) preferably passes through the inner surface, and an air flow flowing along the inner cavity of the cylindrical body is adopted;

8. the polluted air can flow through the inner surface and the outer surface of the discharge body from the inside and the outside simultaneously;

9. the single discharge cell 10 may be used alone.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Although the utility model herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims (10)

1. A discharge electrode structure, comprising at least one discharge cell, the discharge cell comprising:

an insulating layer;

a built-in electrode disposed on an inner surface of the insulating layer;

and/or an external electrode disposed on an outer surface of the insulating layer;

when the air to be purified passes through the inner surface, the built-in electrode can discharge electricity on the inner surface after being electrified so as to adsorb gaseous pollutants in the air to be purified; when the air to be purified passes through the outer surface, the external electrodes can discharge electricity on the outer surface after being electrified so as to adsorb gaseous pollutants in the air to be purified.

2. The discharge electrode structure of claim 1, wherein when the discharge electrode structure includes a plurality of the discharge cells, the plurality of the discharge cells are arranged in a matrix structure.

3. The discharge electrode structure of claim 1, wherein the built-in electrode is a conductive material, and the built-in electrode has a spiral structure or a mesh structure.

4. The discharge electrode structure of claim 3, wherein the built-in electrode is disposed on the inner surface in a winding or etching manner.

5. The discharge electrode structure of claim 1, wherein the external electrode is a conductive material, and the external electrode has a spiral structure or a mesh structure.

6. The discharge electrode structure of claim 5, wherein the outer electrode is disposed on the outer surface in a wound or etched manner.

7. The discharge electrode structure according to any one of claims 1 to 6, wherein a cross section of the insulating layer is a ring-shaped structure.

8. The discharge electrode structure according to any one of claims 1 to 6, wherein the internal electrode and/or the external electrode is made of a carbon fiber or a metal conductive material.

9. The discharge electrode structure of any one of claims 1 to 6, further comprising a fixing structure connected to the discharge cells for fixing the discharge cells.

10. A plasma-generating device comprising a power supply and a discharge electrode structure according to any one of claims 1 to 9, the power supply being electrically connected to the discharge electrode structure.

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