CN214381541U - Plasma tube structure and air sterilizer with same - Google Patents

Abstract

The utility model provides a plasma tube structure and have its air disinfector. The plasma tube structure is a plasma tube assembly and comprises a first electrode, a second electrode and a dielectric part, wherein the dielectric part is a hollow plasma tube with one open end and the other closed end. The discharge part of the first electrode is arranged on the outer circumferential surface of the plasma tube, and the discharge part of the second electrode is correspondingly arranged on the inner circumferential surface of the plasma tube, so that uniform discharge on the inner circumferential surface and the outer circumferential surface of the plasma tube is realized, and the content of plasma generated by ionization can be improved. The utility model discloses rational in infrastructure, simple light and handy, convenient to use has improved plasma generator's sterilization efficiency greatly.

Description

Plasma tube structure and air sterilizer with same

Technical Field

The utility model relates to an air purification technical field, in particular to plasma tube structure and have its air disinfector.

Background

With the increasing living standard of people, the air quality becomes one of the more and more concerned problems. Airborne contaminants can accumulate in large quantities in indoor environments, causing the air we breathe to become contaminated. Considering that humans spend on average about 90% of the time in an indoor environment, pollutants can be removed from indoor air to reduce allergies and prevent the spread of infections. The air sterilizer can achieve the purposes of purifying and improving the air quality. The main techniques used include filtration adsorption, anion, plasma and catalytic techniques.

In recent years, the plasma disinfection industry in China has been rapidly developed, and a large number of plasma air disinfection devices are appeared in the field of air disinfection. Plasma is the fourth form of matter in nature, except solid, liquid, gaseous. It is produced by ionizing gaseous matter under the action of strong electric field and contains mainly electrons, ions, atoms, molecules, active free radicals and other matter. These substances can react with proteins and nucleic acids in bacteria and viruses to destroy and disturb the survival function of the microorganisms, thereby causing the microorganisms to die.

In the chinese utility model patent of patent number 200320109397.5, a plasma air sterilization clarifier is disclosed, including casing, fan, air cleaner, plasma reactor, photocatalysis sterilization filter, anion emergence district, its air cleaner adopts activated carbon filter, be equipped with the actinic media dope layer on the filtering layer of photocatalysis sterilization filter, the edge is equipped with the light source that can shine the actinic media dope layer, simultaneously, this scheme has still adopted the chinese utility model patent of patent number 200320109396.0 and 200320109398.X respectively to disclose filamentous plasma reactor and cusp plasma reactor. Although the plasma reactor is adopted, the plasma reactor cannot work under high pressure and cannot generate high-concentration plasma, the sterilization effect is not better than that of equipment which can generate high-concentration plasma when the plasma reactor works under high pressure, secondly, the plasma air sterilization purifier disclosed by the patent cannot disturb air which enters the plasma reactor to be sterilized to be diffused to the periphery of an electrode wire to the maximum extent to achieve the purpose of sufficient sterilization no matter the plasma reactor is a wire-shaped plasma reactor or a tooth-shaped plasma reactor, and in addition, a photocatalysis sterilization filter of the plasma air sterilization purifier disclosed by the patent adopts photochemical reaction, so the cost is higher.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a plasma tube structure, which is reasonable in structure and uniform in plasma generation, thereby improving the sterilization effect.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a plasma tube structure comprises a first electrode, a second electrode and a dielectric component, wherein the dielectric component is a hollow plasma tube with one end open and the other end closed, a discharge part of the first electrode is arranged on the outer circumferential surface of the plasma tube, and a discharge part of the second electrode is correspondingly arranged on the inner circumferential surface of the plasma tube. Gas can enter the plasma tube through the open end more, the concentration of plasma generated by ionization is improved, the area of surface discharge is increased, the sterilization and disinfection effects are improved, and heat generated in the ionization process can be released through the open end.

Further, the first electrode includes a first main body, a first stopper, and a first connecting member, and the first main body is disposed at the closed end of the plasma tube through the first stopper. The first limiting piece limits and fixes the first electrode at the closed end.

Further, the second electrode includes a second main body, a second stopper, and a second connector, and the second main body is disposed at the opening end of the plasma tube through the second stopper. The second limiting part limits and fixes the second electrode at the opening end. The first and second electrodes may connect both ends of the plasma tube to electrodes of opposite electric polarities, thereby energizing them.

Further, the discharge portion of the first electrode is an outer net, the outer net is fixedly connected with the first electrode through a first connecting piece, the discharge portion of the second electrode is an inner net, and the inner net is fixedly connected with the second electrode through a second connecting piece. The inner and outer meshes may uniformly discharge the plasma tube on the outer circumferential surface and the inner circumferential surface.

Furthermore, a through hole is also formed in the second main body. And the through hole and the open end of the plasma tube form a through channel, and gas can enter the inside of the plasma tube through the channel, so that more gas participates in ionization.

Furthermore, the diameter of the through hole is 6-12 mm.

Furthermore, the outer net and the inner net are made of metal materials, so that the outer net and the inner net are convenient to discharge plasma when being electrified.

Further, the outer net is 20-40 meshes, the inner net is 25-50 meshes, and meshes can ensure enough space to form creeping discharge.

Furthermore, the plasma tube structure is fixed on the base through an insulated electrode support, so that the use safety is improved.

Compared with the prior art, plasma tube structure have following advantage:

(1) in the plasma tube structure of the utility model, one end of the plasma tube is an open end, and the other end is a closed end, so that the content of gas participating in ionization can be increased, and the contact area between the gas and the discharge part can be increased, thereby generating more plasmas through ionization and improving the sterilization and disinfection effects;

(2) in the plasma tube structure of the utility model, the outer mesh sleeve is arranged on the outer peripheral surface, and the inner mesh sleeve is arranged in the inner peripheral surface, so that the discharge area is increased, and the discharge is more uniform;

(3) plasma tube structure, can set up a plurality ofly, gas gets into the back and is blockked by the plasma tube subassembly, forms the vortex, spreads more evenly around the plasma tube subassembly, obtains more stable environment of disinfecting

The utility model discloses an on the other hand provides an air disinfector, will plasma tube structure establishes ties into fence structure and uses. The air sterilizer has the same advantages as the plasma tube structure compared with the prior art, and the details are not repeated.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural view of a plasma tube assembly according to the present invention fixed to a base plate;

fig. 2 is a schematic structural view of a plasma tube assembly according to the present invention;

fig. 3 is another schematic structural view of the plasma tube assembly according to the present invention;

fig. 4 is an exploded view of a plasma tube assembly according to the present invention;

FIG. 5 is an exploded view from another perspective of FIG. 4;

FIG. 6 is an enlarged view of a portion of FIG. 4 at A;

FIG. 7 is an enlarged view of a portion of FIG. 4 at B;

FIG. 8 is an enlarged view of a portion of FIG. 1 at A;

fig. 9 is a schematic structural diagram of the bottom plate according to the present invention.

Description of reference numerals:

1. a base plate; 11. an air inlet hole; 2. a transformer; 3. a wire distributing piece; 31. a wire inlet part; 32. a first wire outlet portion; 33. a second wire outlet portion; 4. an electrode holder; 41. an insulating column; 42. an insulating pad; 43. a fastener; 5. A transformer support; 6. a plasma tube assembly; 7. a plasma tube; 71. a closed end; 72. an open end; 8. A first electrode; 81. a first body; 82. a first limit piece; 83. a first connecting member; 84. an outer net; 85. A first electric connection piece; 9. a second electrode; 91. a second body; 92. a second limiting member; 93. a second connecting member; 94. an inner net; 95. a second electric connection piece; 96. and a through hole.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

The present embodiment provides a plasma tube structure, as shown in fig. 1 to 7, the plasma tube structure is fixed on a bottom plate 1. The plurality of plasma tube structures constitute a plasma tube assembly 6. The plasma tube structure comprises a first electrode 8, a second electrode 9 and a dielectric component, wherein the first electrode 8 and the second electrode 9 are electrodes with opposite positive and negative polarities. Said dielectric element is arranged between said first electrode 8 and said second electrode 9 so as to realize a dielectric barrier discharge between said first electrode 8 and said second electrode 9, a dielectric barrier discharge being a discharge between two electrodes separated by an insulating dielectric barrier layer.

The dielectric member is a plasma tube 7, and the plasma tube 7 may have a hollow structure of various shapes. And is made of an insulating material such as glass, ceramic, or quartz. In this embodiment, the plasma tube 7 is a hollow cylinder structure, and has one open end and the other closed end, and both ends are connected to the positive and negative electrodes, respectively. In this embodiment, the closed end 71 is connected to the first electrode 8 and the open end 72 is connected to the second electrode 9. The discharge portion of the first electrode 8 is disposed on the outer circumferential surface of the plasma tube 7, and the discharge portion of the second electrode 9 is correspondingly disposed on the inner circumferential surface of the plasma tube 7, thereby achieving uniform discharge on the circumferential surface of the plasma tube 7. An operating electric field is formed between the first electrode 8 and the second electrode 9, and the operating electric field passes through the outer circumferential surface and the inner circumferential surface of the plasma tube 7, and generates a creeping discharge at the inner and outer circumferential surfaces of the plasma tube 7. Alternatively, the closed end 71 may be connected to the second electrode 9 and the open end 72 may be connected to the first electrode 8. The first electrode 8 and the second electrode 9 are opposite electrodes. When the first electrode 8 is a positive electrode, the second electrode 9 is a negative electrode. The reverse is also possible.

Because one end of the plasma tube 7 is open and the other end is closed, gas not only surrounds the outer side of the plasma tube 7, but also can enter the plasma tube 7 through the open end 72, so that the content of gas participating in ionization can be increased, the contact area of the gas and the discharge part can be increased, more plasmas are generated by ionization, and the sterilization and disinfection effects are improved. When the power is on, the plasma tube 7 is switched on under the action of the first electrode 8 and the second electrode 9, and the outside and inside gas generates plasma under the action of a strong electric field, so that the sterilization effect is achieved, and the purposes of air sterilization and air purification are achieved. In addition, heat is generated during the dielectric barrier discharge, and heat can be dissipated through the open end 72 of the plasma tube 7, thereby reducing the temperature of the plasma tube 7.

The wall thickness of plasma tube 7 is 2 ~ 7mm, and is preferred, plasma tube 7's thickness is 3mm, when 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, all can obtain better discharge, realizes good bactericidal effect.

Specifically, as shown in fig. 2 to 6, the first electrode 8 includes a first main body 81, a first limiting member 82, a first connecting member 83 and a first connecting member 85. The first body 81 has no opening and is attached to the closed end 71 of the plasma tube 7. The first limiting member 82, the first connecting member 83 and the first electric connecting member 85 are distributed on the periphery of the first main body 81. The discharge part of the first electrode 8 is an outer mesh 84. The outer mesh 84 is fitted over the outside of the plasma tube 7. At least one first stopper 82 is provided to limit the first electrode 8 at the closed end 71 of the plasma tube 7. In this embodiment, the first limiting members 82 are long and two are provided. When the first body 81 is attached to the closed end 71 of the plasma tube 7, the first stopper 82 is located outside the plasma tube 7, and firmly connects the first electrode 8 and the plasma tube 7. When the outer mesh 84 is sleeved and connected to the outside of the plasma tube 7, the first connector 83 is in contact with the outer mesh 84. The first connecting member 83 not only connects the outer mesh 84 and the first electrode 8 so that the outer mesh 84 can be energized, but also can perform the same limiting function as the first limiting member 82 to limit and fix the first electrode 8 to the closed end 71.

Specifically, as shown in fig. 9, the second electrode 9 includes a second main body 91, a second limiting member 92, a second connecting member 93, and a second connecting member 95. The second body 91 is attached to the open end 72 of the plasma tube 7. A through hole 96 is formed in the second body 91, and the through hole 96 and the opening end 72 form a through air inlet. The second limiting member 92, the second connecting member 93 and the second electric connecting member 95 are distributed on the periphery of the second main body 91. The discharge portion of the second electrode 9 is an inner mesh 94. The inner web 94 is located inside the plasma tube 7. Second connector 93 has a long length so as to be inserted into the interior of plasma tube 7 via open end 72 and come into contact with inner mesh 94, so that inner mesh 94 can be energized. At least one second stopper 92 is provided for stopping the second electrode 9 at the open end 72. In this embodiment, the second stoppers 92 are elongated and two in number. When the second body 91 is attached to the open end 72 of the plasma tube 7, the second stopper 92 is engaged with the outer side of the plasma tube 7, thereby firmly connecting the second electrode 9 and the plasma tube 7.

Specifically, the diameter of through-hole 96 is 6 ~ 12mm, and is preferred, the diameter of through-hole 96 is 8 ~ 10mm, and is more preferred, the diameter of through-hole 96 is 9 mm.

Specifically, the outer mesh 84 and the inner mesh 94 are made of metal. Preferably, the outer and inner webs 84, 94 are stainless steel gauze. The stainless steel is common, so that the stainless steel is simple and convenient to manufacture, has the advantages of corrosion resistance and oxidation resistance, can resist plasma discharge damage, and can maximize the surface generating plasma by using the stainless steel gauze as a discharge part, thereby obtaining better sterilization effect. The thickness of the outer net 84 and the inner net 94 is 0.1-0.6 mm, and preferably 0.2 mm. Preferably, the mesh number of the outer net 84 is 20 to 40 meshes, preferably 30 meshes, and the mesh number of the inner net 94 is 25 to 50 meshes, preferably 35 meshes. Electromagnetic fields are generated during discharge, particularly hysteresis effects generated by the electromagnetic fields in the 50Hz period of alternating current, and the proper mesh number of the gauze needs to be selected. The mesh openings must not be too dense to ensure that there is space for creeping discharge to form.

The first electric connecting piece 85 and the second electric connecting piece 95 are fixedly arranged on the bottom plate 1 through the electrode bracket 4 respectively. The electrode support 4 is made of an insulating material selected from any one of ceramics, mica, asbestos, marble, porcelain and glass, has the characteristics of good insulating effect and low cost, and can improve the use safety.

Specifically, the electrode holder 4 includes an insulating column 41 and an insulating pad 42, the upper end of the insulating column 41 is connected to the first electrical connector 85 or the second electrical connector 95 via a fastener 43, and the lower end is connected to the insulating pad 42. The insulating column 41 and the insulating pad 42 can fix the plasma tube structure on the bottom plate 1, and the double insulation arrangement further improves the use safety. Preferably, the fastening member 43 is a screw, and the plasma tube structure and the electrode holder 4 are fixedly connected by a screw connection.

Example 2

The present embodiment discloses an air sterilizer. The air sterilizer employs the plasma tube structure described in example 1. The plasma tube structures are connected in series and distributed in a fence shape. When the plasma tube structure is installed, the interval between adjacent two plasma tubes 7 may be made equal to form a uniform electric field structure. The plurality of plasma tube structures distributed in a fence shape can prevent gas from entering and form turbulent flow, and the gas can be more uniformly dispersed on the outer surface and the inner surface of the plasma tube 7, so that plasma can be uniformly released.

As shown in fig. 1, a plurality of plasma tube structures and a plurality of transformers 2 are arranged on a base plate 1, a plurality of wire distributing members 3 are arranged between the transformers 2 and the plasma tube structures, and the wire distributing members 3 are also in insulation connection with the base plate 1 through electrode supports 4. The wire distributing part 3 is used for electrically connecting more than two plasma tube structures with one transformer 2. The transformers 2 are connected in series and arranged on the bottom plate 1 through transformer brackets 5. The transformer 2 is a high voltage transformer for applying a high voltage to the plasma tube structure. The plasma tube structure can obtain ultrahigh pressure, so that more plasmas are generated by ionization, and a better sterilization purpose is achieved.

Specifically, every two wire distributing parts 3 and one transformer 2 form a group of transformation wire outlet assemblies. The transformer 2 includes a cathode connection and an anode connection. The two wire dividers 3 are electrically connected to the cathode connection or the anode connection, respectively. Each branching piece 3 continues to branch off several lines. The same line branched by the same branching member 3 is connected to the same pole of a plurality of plasma tube structures. Specifically, for a group of voltage transformation outlet assemblies, the wire distributing element 3 electrically connected with the cathode wiring is divided into a plurality of cathode circuits, and the cathode circuits are electrically connected with the cathodes of the plasma tube structures. The wire distributing part 3 electrically connected with the anode wiring divides a plurality of anode lines, and the anode lines are electrically connected with the anodes of the plasma tube structures. Through the arrangement mode, one transformer 2 can drive a plurality of plasma tube structures to work, the energy utilization rate is effectively improved while the sterilization efficiency of products is not reduced, and a good effect is obtained.

Preferably, in the present embodiment, as shown in fig. 8, the wire distributing member 3 includes a wire inlet portion 31 and a wire outlet portion. There are two outlet portions, namely a first outlet portion 32 and a second outlet portion 33. The first and second wire-out portions 32 and 33 are electrically connected to the same poles of the two plasma tube structures, respectively. The wire inlet portion 31 is used for electrical connection with the transformer 2. Specifically, when the wire inlet part 31 is connected to the anode outlet wire of the transformer 2, the first wire outlet part 32 and the second wire outlet part 33 are respectively connected to the cathode electrodes of the two plasma tube structures; when the wire inlet portion 31 is connected to the cathode outlet of the transformer 2, the first wire outlet portion 32 and the second wire outlet portion 33 are electrically connected to the anodes of the two plasma tube structures, respectively. One transformer 2 can drive two plasma tube structures to work.

In this embodiment, as shown in fig. 9, a plurality of air inlet holes 11 are disposed on the bottom plate 1, the number of the air inlet holes 11 is equal to that of the plasma tube structures, and the positions of the air inlet holes 11 are adapted to the outer mesh 84. The air inlet hole 11 is used for introducing air to blow towards the plasma tube structure, so that more air is surrounded on the outer side and the inner side of the plasma tube structure, ionization is facilitated to generate more plasmas, and the aims of sterilization and disinfection are further improved.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A plasma tube structure comprises a first electrode (8), a second electrode (9) and a dielectric component, and is characterized in that the dielectric component is a hollow plasma tube (7) with one end open and the other end closed, a discharge part of the first electrode (8) is arranged on the outer circumferential surface of the plasma tube (7), and a discharge part of the second electrode (9) is correspondingly arranged on the inner circumferential surface of the plasma tube (7).

2. A plasma tube arrangement according to claim 1, characterized in that the first electrode (8) comprises a first body (81), a first stop member (82) and a first connection member (83), the first body (81) being arranged at the closed end (71) of the plasma tube (7) via the first stop member (82).

3. A plasma tube structure according to claim 2, characterized in that the second electrode (9) comprises a second body (91), a second stopper (92) and a second connector (93), the second body (91) being arranged at the open end (72) of the plasma tube (7) via the second stopper (92).

4. A plasma tube structure according to claim 3, characterized in that the discharge portion of the first electrode (8) is an outer mesh (84), the outer mesh (84) is fixedly connected with the first electrode (8) by a first connecting member (83), the discharge portion of the second electrode (9) is an inner mesh (94), and the inner mesh (94) is fixedly connected with the second electrode (9) by a second connecting member (93).

5. A plasma tube arrangement according to claim 3, characterized in that a through hole (96) is also provided in the second body (91).

6. A plasma tube structure according to claim 5, characterized in that the diameter of the through hole (96) is 6-12 mm.

7. A plasma tube structure according to claim 4, characterized in that the outer mesh (84) and the inner mesh (94) are both of metal.

8. The plasma tube structure according to claim 4, wherein the outer mesh (84) is 20-40 mesh and the inner mesh (94) is 25-50 mesh.

9. A plasma tube arrangement according to claim 1, characterized in that the plasma tube arrangement is fixed to the base (1) by means of an insulated electrode holder (4).

10. An air sterilizer, characterized in that a plasma tube structure as claimed in any one of claims 1 to 9 is used in series to form a fence.

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