CN113350986A - Discharge structure and sterilization device - Google Patents
Discharge structure and sterilization device Download PDFInfo
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- CN113350986A CN113350986A CN202110750722.9A CN202110750722A CN113350986A CN 113350986 A CN113350986 A CN 113350986A CN 202110750722 A CN202110750722 A CN 202110750722A CN 113350986 A CN113350986 A CN 113350986A
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- 230000001954 sterilising effect Effects 0.000 title abstract description 30
- 238000009434 installation Methods 0.000 claims description 31
- 238000000746 purification Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 2
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- 230000004888 barrier function Effects 0.000 description 18
- 241000894006 Bacteria Species 0.000 description 8
- 241000700605 Viruses Species 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
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- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
- B01D53/323—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/22—Ionisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
- F24F8/26—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media using ozone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Epidemiology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention relates to the technical field of purification and sterilization, in particular to a discharging structure and a sterilization device. The discharge structure comprises at least two first electrodes, a second electrode and an insulating part, wherein the at least two first electrodes are suitable for obtaining a first voltage; the second electrode is suitable for obtaining a second voltage, the second voltage is lower than the first voltage, the second electrode is provided with a vent hole, and the first electrode is arranged at a position adjacent to the vent hole; the insulating part wraps the outer surface of the first electrode. According to the discharge structure provided by the invention, the directional transportation of the plasma is realized through the air holes.
Description
Technical Field
The invention relates to the technical field of purification and sterilization, in particular to a discharging structure and a sterilization device.
Background
In recent years, low-temperature plasma generated by gas discharge has been widely used in various fields such as industry and medicine. The dielectric barrier discharge is an important way to generate low-temperature plasma at atmospheric pressure, and the most remarkable feature is to insert at least one piece of insulating dielectric between two discharge metal electrodes thereof to block a discharge channel penetrating through the whole air gap. The existence of the insulating medium restrains the excessive increase of the discharge current, and can avoid the transition of the discharge to spark discharge or arc discharge, thereby forming stable low-temperature plasma under atmospheric pressure. At present, dielectric barrier discharge is mainly applied to the fields of sterilization, disinfection, waste gas treatment, material surface treatment and the like. The plasma air sterilization and purification technology is a high-tech technology with development prospect in the field of environmental pollution treatment as one of consumable-free air purification technologies. The dielectric barrier discharge structure utilizes the collision of electrons and ions in plasma and gas molecules in the air to generate chain chemical reaction, so that pollutants in the gas are subjected to the processes of migration, conversion, harmlessness and the like.
The dielectric barrier discharge structure generally includes a first electrode connected to a high voltage terminal of a power supply, a second electrode grounded, and an insulating dielectric portion. Existing dielectric barrier discharge structures are mainly classified into two types according to structure positions. As shown in fig. 1, a first type of dielectric barrier discharge structure, in which a discharge occurs in a gap between two electrodes, is a dielectric barrier discharge structure in which a discharge gap is generally only about a few millimeters due to high air breakdown field strength when air is used as a discharge gas under atmospheric pressure, and the size of an object to be processed is severely limited. As shown in fig. 2, the second dielectric barrier discharge structure is a dielectric barrier discharge structure, which can generate plasma in an open space, but the generated plasma is only bound to the surface of the insulating dielectric material, and it is difficult for the active particles generated by the plasma to be efficiently transported to the surface of the object to be treated. In addition, the insulating medium part of the existing dielectric barrier discharge structure is of a plate type structure, working gas or gas to be processed can only flow along the direction parallel to the insulating medium plate, and the transport direction of plasma is limited.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the limitation of the transport direction of the plasma caused by the plate-type insulating medium portion in the prior art, so as to provide a discharge structure and a sterilization device capable of realizing the directional transport of the plasma.
To solve the above technical problem, the present invention provides a discharge structure, including:
at least two first electrodes, each adapted to obtain a first voltage;
the second electrode is suitable for obtaining a second voltage, the second voltage is lower than the first voltage, the second electrode is provided with a vent hole, and the first electrode is arranged at a position adjacent to the vent hole;
and the insulating part is wrapped on the outer surface of the first electrode.
In the discharge structure provided by the invention, the second electrode is of a plate-shaped structure, the plate-shaped structure is bent into a plurality of accommodating grooves, and the first electrode is suitable for being accommodated in the accommodating grooves.
In the discharge structure provided by the invention, at least part of the first electrode is abutted against the second electrode through the insulating part.
According to the discharge structure provided by the invention, the plurality of accommodating grooves are arranged in sequence in a wave shape.
According to the discharge structure provided by the invention, the accommodating grooves are V-shaped grooves, and the notches of two adjacent V-shaped grooves face to opposite directions.
The discharge structure provided by the invention also comprises a supporting frame, wherein an installation cavity is formed in the supporting frame, and an air inlet and an air outlet which are communicated with the installation cavity are formed at two ends of the supporting frame respectively;
a supporting edge protruding towards the central line direction of the supporting frame is arranged on the wall of the mounting cavity close to the bottom of the supporting frame, and the second electrode is suitable for being lapped on the supporting edge;
the wall of the installation cavity is provided with a plurality of first installation holes and a plurality of second installation holes, each second installation hole is arranged opposite to the corresponding first installation hole, and two ends of the first electrode are respectively matched with the first installation holes and the second installation holes.
The discharge structure provided by the invention further comprises a power supply and a first lead, wherein at least two first electrodes are connected in parallel through the first lead, a first wiring hole is formed in the top of the support frame, the first lead is suitable for penetrating through the first wiring hole to be electrically connected with a first end of the power supply, and the first lead is suitable for obtaining a first voltage through the first end.
The discharge structure provided by the invention further comprises a power supply and a second lead wire, wherein a second wiring hole is further formed in the top of the support frame, one end of the second lead wire is electrically connected with the second electrode, the other end of the second lead wire is suitable for penetrating through the second wiring hole to be electrically connected with the second end of the power supply, and a second voltage is obtained through the second end.
According to the discharge structure provided by the invention, at least two first electrodes are distributed in parallel;
the second electrode is of a plate-shaped structure, a plurality of rows of air holes parallel to the first electrode are arranged on the second electrode, and at least one first electrode is arranged between every two adjacent rows of air holes.
The discharge structure provided by the invention also comprises two supporting shells, wherein the two second electrodes are respectively connected to the outer sides of the two shell walls opposite to the supporting shells; through holes communicated with the air holes are formed in the corresponding positions on the supporting shell; the first electrode is wound around the periphery of the support shell.
In the discharge structure provided by the invention, the second electrode is abutted against the shell wall of the supporting shell and is clamped between the first electrode and the supporting shell.
The invention provides a discharge structure, wherein at least two first electrodes are arranged in parallel.
The invention also provides a sterilization device which comprises the discharge structure.
The sterilization device can be an air purifier and also can be a sterilization device for performing sterilization and disinfection on the surface to be detected.
The technical scheme of the invention has the following advantages:
1. the invention provides a discharge structure, which comprises at least two first electrodes, a second electrode and an insulating part, wherein the at least two first electrodes are suitable for obtaining a first voltage; the second electrode is suitable for obtaining a second voltage, the second voltage is lower than the first voltage, the second electrode is provided with a vent hole, and the first electrode is arranged at a position adjacent to the vent hole; the insulating part wraps the outer surface of the first electrode.
The first electrode obtains the first voltage, and the second electrode obtains the second voltage, has higher pressure difference between first voltage and the second voltage, because the existence of insulating part, the first electrode discharges through the gas in the discharge area of discharge structure, produces high energy high density plasma, and harmful gas such as bacterium, virus and formaldehyde, VOCs in the air can fully contact, react with plasma in the discharge area to realize the high-efficient disinfection and sterilization to bacterium, virus and the high-efficient harmful gas such as getting rid of to formaldehyde. According to the invention, the second electrode is provided with the air holes, the directional transportation of the plasma is realized through the air holes, and the transportation direction of the plasma is not limited by the insulating part any more. The first electrode is arranged at the position adjacent to the air holes, so that high-energy and high-density plasma can be transported conveniently, and high-efficiency sterilization of bacteria and viruses and high-efficiency removal of harmful gases such as formaldehyde and the like are realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a diagram of a prior art dielectric barrier discharge structure;
FIG. 2 is a diagram of a prior art dielectric barrier discharge structure;
FIG. 3 is a schematic diagram of a discharge structure according to a first embodiment of the present invention;
FIG. 4 is a schematic diagram of a discharge structure according to a first embodiment of the present invention;
FIG. 5 is a schematic view of a supporting frame according to a first embodiment of the present invention;
FIG. 6 is a schematic view of a sterilization apparatus according to a first embodiment of the present invention;
FIG. 7 is a diagram illustrating a discharge structure according to a second embodiment of the present invention;
FIG. 8 is a side view of a discharge structure according to a second embodiment of the present invention;
FIG. 9 is a sectional view taken along line A-A of FIG. 8;
FIG. 10 is an enlarged view of portion B of FIG. 9;
fig. 11 is a top view of a discharge structure according to a second embodiment of the present invention;
fig. 12 is a schematic view of a sterilization apparatus according to a second embodiment of the present invention.
Description of reference numerals:
1-a discharge structure; 11-a first electrode; 12-a second electrode; 121-air holes; 122-a receiving groove; 13-an insulating part; 14-a support frame; 141-a support edge; 142-a first mounting hole; 143-a first wiring hole; 144-a second wiring hole; 15-a support shell; 151-through holes; 2-protective resistance; 3-a shell; 4-an ozone reduction structure; 5, a fan; 6-the object to be treated; 7-a power supply; 8-plasma.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
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 simplicity of description, but do not indicate or imply that the device or element being 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 should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example one
Referring to fig. 3 to 6, the discharge structure 1 provided in the present embodiment includes at least two first electrodes 11, a second electrode 12, and an insulating portion 13, where each of the at least two first electrodes 11 is adapted to obtain a first voltage; the second electrode 12 is adapted to obtain a second voltage lower than the first voltage, the second electrode 12 is provided with a vent 121, and the first electrode 11 is disposed at a position adjacent to the vent 121; the insulating part 13 is wrapped on the outer surface of the first electrode 11. Specifically, the first electrode 11 is disposed at a position adjacent to the vent 121, including two ways in which the first electrode 11 is disposed at a position close to the second electrode 12 or the first electrode 11 is disposed at a position abutting against the second electrode 12.
The first electrode 11 obtains a first voltage, the second electrode 12 obtains a second voltage, and a higher voltage difference exists between the first voltage and the second voltage, due to the existence of the insulating part, the first electrode 11 discharges gas passing through the discharge area of the discharge structure 1 to generate high-energy high-density plasma 8, and bacteria, viruses, formaldehyde, VOCs and other harmful gases in the air can fully contact and react with the plasma 8 in the discharge area, so that efficient disinfection and sterilization of the bacteria and the viruses and efficient removal of the formaldehyde and other harmful gases are realized. The second electrode 12 of the present embodiment is provided with the vent hole 121, the plasma 8 is directionally transported through the vent hole 121, and the transport direction of the plasma 8 is not limited by the insulating part 13. The first electrode 11 is disposed at a position adjacent to the airing hole 121; the high-energy and high-density plasma 8 is conveniently transported, and high-efficiency disinfection and sterilization of bacteria and viruses and high-efficiency removal of harmful gases such as formaldehyde and the like are realized. Preferably, the second electrode 12 is provided with a plurality of ventilation holes 121.
Fig. 1 shows a dielectric barrier discharge structure in the prior art, which includes a first electrode 11, a second electrode 12 and an insulating portion 13, where the insulating portion 13 is disposed between the first electrode 11 and the second electrode 12, and a gap is formed between the insulating portion 13 and the second electrode 12, the first electrode 11 is electrically connected to a first end of a power supply 7, and obtains an ionization voltage through the first end; the second electrode 12 is electrically connected to a second terminal of the power supply 7; when air is used as a discharge gas under atmospheric pressure, the discharge gap of the dielectric barrier discharge structure is generally only about several millimeters due to high air breakdown field strength, and the size of the object to be processed 6 is strictly limited. Compared with the dielectric barrier discharge structure shown in fig. 1, the discharge structure 1 of the embodiment has the advantages that the size of the object to be treated 6 is not limited any more, the object to be treated 6 can be directly arranged on one side of the discharge structure 1, and the plasma 8 reaches the position of the object to be treated 6 through the air holes 121 under the driving of the air flow.
Fig. 2 shows a dielectric barrier discharge structure in the prior art, which includes a first electrode 11, a second electrode 12 and an insulating part 13, wherein the first electrode 11 and the second electrode 12 are respectively disposed on two sides of the insulating part 13, the dielectric barrier discharge structure can generate plasma 8 in an open space, but the generated plasma 8 is only bound on the surface of an insulating dielectric material, and active particles generated by the plasma 8 are difficult to be efficiently transported to the surface of an object to be processed 6. Compared with the dielectric barrier discharge structure shown in fig. 2, in the discharge structure 1 of the present embodiment, the plasma 8 is directionally transported through the air holes 121 under the driving of the air flow, and the active ions generated by the plasma 8 are not bound to the surface of the insulating portion 13, and can be efficiently transported to the surface of the object to be treated 6.
The at least two first electrodes 11 are electrically connected with a first end of the power supply 7 and obtain a first voltage through the first end, wherein the first voltage is an ionization voltage; the second electrode 12 is electrically connected to a second terminal of the power supply 7, and a second voltage is obtained through the second terminal of the power supply 7. Preferably, the first terminal of the power supply 7 is a high voltage terminal, the second terminal is a low voltage terminal, and the second terminal is a ground terminal. When the alternating-current high-voltage power supply 7 is adopted, the discharge voltage of the high-voltage end is in the range of 1KV-10KV, and the frequency is in the range of 1KHz-20 KHz.
Specifically, the first electrode has two or three or four or more. The first electrode 11 is a conducting wire or a thin rod made of a conducting material; preferably, the conductive material is copper, aluminum, tungsten or the like. The second electrode 12 is made of a metal material such as aluminum or stainless steel. The insulating part 13 is tightly wrapped on the periphery of the first electrode 11; preferably, the insulating portion 13 is made of an organic polymer material such as polytetrafluoroethylene, polypropylene, or polyimide, and the thickness of the insulating portion 13 is in a range of 0.1mm to 1 mm.
In the discharge structure 1 of the present embodiment, the second electrode 12 is a plate-shaped structure, the plate-shaped structure is bent to form a plurality of receiving slots 122, and the first electrode 11 is suitable for being received in the receiving slots 122. At least one first electrode 11 is disposed in each accommodating groove 122.
The first electrode 11 is arranged in the accommodating groove 122, the insulating part 13 is adjacent to the second electrode 12 in more areas, the air gap between the insulating part 13 and the second electrode 12 generates plasma 8 with higher density, and when air flow passes through the air holes 121, efficient purification and disinfection of air can be realized, and efficient sterilization and disinfection of the object to be processed 6 arranged on the air outlet side of the discharge structure 1 can also be realized. Preferably, the electron density of the discharge structure 1 in the present embodiment may reach 1014/cm3～1015/cm 33 to 4 times the electron density of the plasma 8 generated by other air cleaning devices.
In the discharge structure 1 of the present embodiment, at least a portion of the first electrode 11 abuts against the second electrode 12 through the insulating portion 13. The gap between the first electrode 11 and the second electrode 12 is small, the discharge effect is better, and the density of the plasma 8 is higher.
In the discharge structure 1 of the present embodiment, the plurality of accommodating grooves 122 are arranged in a wave shape. The number of the accommodating grooves 122 is large, and the number of the first electrodes 11 is also large, so that the high-density plasma 8 can be generated.
In the discharge structure 1 of this embodiment, the accommodating groove 122 is a V-shaped groove, and the notches of two adjacent V-shaped grooves face opposite directions. The occupied space is small and a large discharge space can be provided for the first electrode 11. Preferably, the V-shaped grooves are arranged in sequence in a wave shape, and in two adjacent V-shaped grooves, the notch of one V-shaped groove faces upwards, and the notch faces downwards.
As an alternative embodiment, the first electrode 11 may be a round wire or a round rod, the accommodating groove 122 may be an arc-shaped groove matching the shape of the first electrode 11, and the notches of two adjacent arc-shaped grooves face in opposite directions.
The discharge structure 1 in this embodiment further includes a support frame 14, an installation cavity is formed inside the support frame 14, and an air inlet and an air outlet communicated with the installation cavity are formed at two ends of the support frame 14 respectively; a supporting edge 141 protruding towards the central line direction of the supporting frame 14 is arranged on the wall of the mounting cavity and close to the bottom of the supporting frame 14, and the second electrode 12 is suitable for being erected on the supporting edge 141; the wall of the installation cavity is provided with a plurality of first installation holes 142 and a plurality of second installation holes, each second installation hole is arranged opposite to the corresponding first installation hole 142, and two ends of the first electrode 11 are respectively matched with the first installation holes 142 and the second installation holes which are arranged oppositely.
The first electrode 11 is installed in the installation cavity through the first installation hole 142 and the second installation hole, the second electrode 12 is supported in the installation cavity through the supporting edge 141, air flow enters the installation cavity through the air inlet, high-efficiency purification and disinfection of air are achieved in the installation cavity, and high-efficiency sterilization and disinfection of the object to be processed 6 arranged at the air outlet can also be achieved.
As an alternative embodiment, two opposite walls of the mounting cavity may be provided with mounting slots near the bottom of the support frame 14, and two opposite edges of the second electrode 12 may be adapted to be inserted into the mounting slots.
Specifically, first mounting hole 142 and second mounting hole are the shrinkage pool of setting on the chamber wall, and first mounting hole 142 and second mounting hole do not pierce through the chamber wall, prevent that gaseous first play of first mounting hole 142 and second mounting hole through. Alternatively, at least one of the first mounting hole 142 and the second mounting hole is a mounting through hole 151, and a gasket is disposed between the first electrode 11 and the mounting through hole 151 to prevent gas from overflowing. The air inlet and the air outlet are respectively arranged at the top and the bottom of the support frame 14.
The discharge structure 1 of this embodiment further includes a power supply and a first conductive wire, at least two first electrodes 11 are connected in parallel through the first conductive wire, the top of the support frame 14 is provided with a first wire hole 143, and the first conductive wire is adapted to pass through the first wire hole 143 to be electrically connected with a first end of the power supply 7, and is adapted to obtain a first voltage through the first end. At least two first electrodes 11 are connected in parallel through a first wire, and the first electrodes 11 are provided with equal voltage, so that the discharge structure 1 generates uniform plasma 8. Specifically, the first wire is a high voltage wire. The top of the support frame 14 is provided with a first wire hole 143 for leading out a first wire.
As an alternative embodiment, each first electrode 11 may be electrically connected to the first end of the power supply 7 through a first lead, so as to provide a stable and uniform voltage to the first electrode 11.
As an alternative embodiment, the first wiring hole 143 may be provided at the bottom of the support frame 14.
The discharge structure 1 in this embodiment further includes a power supply and a second conducting wire, the top of the supporting frame 14 is further provided with a second wire hole 144, one end of the second conducting wire is electrically connected to the second electrode 12, and the other end of the second conducting wire is adapted to penetrate through the second wire hole 144 to be electrically connected to the second end of the power supply 7, and is adapted to obtain a second voltage through the second end.
As an alternative embodiment, the second wiring hole 144 may be provided at the bottom of the support frame 14.
The embodiment also provides a sterilization device, which is used for purifying and sterilizing air or purifying and sterilizing the surface of the object to be processed 6. The sterilization device comprises the discharge structure 1, the protection resistor 2 and the shell 3, wherein the discharge structure 1 is arranged in an air duct in the shell 3. The protective electrical group is electrically connected between the power source 7 and the discharge structure 1.
The sterilisation apparatus further comprises an ozone reduction structure 4 arranged within the housing 3 downstream of the discharge structure 1 in the gas flow direction.
The sterilization device also comprises a fan 5 which is arranged in the shell 3 and drives the air to flow, so as to purify and sterilize the indoor air.
Example two
As shown in fig. 7 to 12, unlike the first embodiment, in the present embodiment, at least two first electrodes 11 are distributed in parallel; the second electrode 12 is a plate-shaped structure, a plurality of rows of air holes 121 parallel to the first electrode 11 are arranged on the second electrode 12, and at least one first electrode 11 is arranged between two adjacent rows of air holes 121. Each row of the ventilation holes 121 is uniformly distributed with a plurality of ventilation holes 121 along the axial direction of the first electrode 11. The discharge structure 1 in this embodiment is suitable for sterilizing the surface of the object to be treated 6, and is also suitable for purifying and sterilizing indoor air. The gas is passed in a direction perpendicular to the second electrode 12, and the plasma 8 is transported to the other end of the second electrode 12, and preferably, the first electrode 11 is provided between the surface of the object to be treated 6 and the second electrode 12.
The discharge structure 1 in this embodiment further includes two supporting shells 15, and the two second electrodes 12 are respectively connected to the outer sides of the two shell walls opposite to the supporting shells 15; a through hole 151 communicated with the air hole 121 is arranged at a corresponding position on the supporting shell 15; the first electrode 11 is wound around the outer periphery of the support case 15. In the process that the gas passes through the air holes 121 and the through holes 151, high-energy high-density plasma 8 is generated, directional transportation of the plasma 8 is achieved, harmful gases such as bacteria, viruses, formaldehyde and VOCs in the air can be in full contact and reaction with the plasma 8 in the supporting shell 15 and near the supporting shell 15, and therefore efficient sterilization of the bacteria and the viruses and efficient removal of the harmful gases such as the formaldehyde are achieved. The plasma 8 can be efficiently transported to the surface to be treated of the object to be treated 6 through the ventilation holes 121 and the through holes 151.
The second electrode 12 is a plate-like structure that mates with the support housing 15. Preferably, the second electrode 12 is a straight plate-like structure. The second electrode 12 is provided with a protruding connection portion, the connection portion is provided with a connection through hole 151, and the fastening member is detachably connected to the support case 15 through the connection through hole 151.
In the discharge structure 1 of the present embodiment, the second electrode 12 abuts against the wall of the support case 15, and is sandwiched between the first electrode 11 and the support case 15. Compact structure, small space occupation and capability of obtaining plasma 8 with higher density.
In the discharge structure 1 of the present embodiment, at least two first electrodes 11 are arranged in parallel, and are arranged in parallel through a first conducting wire, so as to provide a uniform voltage for the at least two first electrodes 11.
In this embodiment, a sterilization apparatus is further provided, and the sterilization apparatus is used to purify and sterilize air, or to purify and sterilize the surface of the object to be processed 6. The sterilization device comprises the discharge structure 1, a protective resistor 2 and a shell 3, wherein the discharge structure 1 is arranged in an air duct in the shell 3. The protective electrical group is electrically connected between the power source 7 and the discharge structure 1.
The sterilizing device also comprises a fan 5 which is arranged in the shell 3 and drives gas to flow, so that the directional transportation of the plasma 8 is realized.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (13)
1. A discharge structure, comprising:
at least two first electrodes (11), each adapted to obtain a first voltage;
a second electrode (12) adapted to obtain a second voltage lower than the first voltage, the second electrode (12) being provided with a vent (121), the first electrode (11) being disposed at a position adjacent to the vent (121);
and the insulating part (13) is wrapped on the outer surface of the first electrode (11).
2. The discharge structure according to claim 1, wherein the second electrode (12) is a plate-shaped structure, the plate-shaped structure is bent to form a plurality of receiving slots (122), and the first electrode (11) is adapted to be received in the receiving slots (122).
3. Discharge structure according to claim 2, characterized in that at least part of the first electrode (11) is pressed against the second electrode (12) by the insulating part (13).
4. The discharge structure according to claim 2, wherein the plurality of receiving slots (122) are arranged in a wave shape.
5. The discharge structure according to claim 4, wherein the receiving grooves (122) are V-shaped grooves, and the notches of two adjacent V-shaped grooves face in opposite directions.
6. The discharge structure according to any one of claims 2 to 5, further comprising a support frame (14), wherein a mounting cavity is formed inside the support frame (14), and an air inlet and an air outlet which are communicated with the mounting cavity are respectively formed at two ends of the support frame (14);
a supporting edge (141) protruding towards the central line direction of the supporting frame (14) is arranged on the cavity wall of the mounting cavity and close to the bottom of the supporting frame (14), and the second electrode (12) is suitable for being erected on the supporting edge (141);
the wall of the installation cavity is provided with a plurality of first installation holes (142) and a plurality of second installation holes, each second installation hole is opposite to the corresponding first installation hole (142), and two ends of the first electrode (11) are respectively matched with the first installation holes (142) and the second installation holes which are opposite to each other.
7. The discharge structure according to claim 6, further comprising a power supply (7) and a first conductive line, wherein at least two first electrodes (11) are connected in parallel through the first conductive line, a first wiring hole (143) is formed at the top of the support frame (14), and the first conductive line is adapted to pass through the first wiring hole (143) and electrically connected to a first end of the power supply (7).
8. The discharge structure according to claim 6, further comprising a power supply (7) and a second conductive wire, wherein a second wiring hole (144) is further formed at the top of the support frame (14), and one end of the second conductive wire is electrically connected to the second electrode (12) and the other end of the second conductive wire is adapted to pass through the second wiring hole (144) to be electrically connected to a second end of the power supply (7).
9. Discharge structure according to claim 1, characterized in that at least two of said first electrodes (11) are distributed in parallel;
the second electrode (12) is of a plate-shaped structure, a plurality of rows of air holes (121) are arranged on the second electrode (12) in parallel with the first electrode (11), at least one air hole (121) is arranged between every two adjacent rows of air holes (121), and the first electrode (11) is arranged between every two adjacent rows of air holes.
10. The discharge structure according to claim 9, further comprising a support case (15), wherein the second electrode (12) has two electrodes respectively connected to the outer sides of the two opposite case walls of the support case (15); a through hole (151) communicated with the air hole (121) is formed in the corresponding position of the supporting shell (15); the first electrode (11) is wound on the periphery of the support shell (15).
11. Discharge structure according to claim 10, characterized in that said second electrode (12) is in abutment with the wall of said supporting envelope (15) and is interposed between said first electrode (11) and said supporting envelope (15).
12. Discharge structure according to any of claims 9-11, characterized in that at least two of said first electrodes (11) are arranged in parallel.
13. A sterilisation apparatus, comprising a discharge structure (1) according to any one of the claims 1-12.
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| CN202110750722.9A CN113350986A (en) | 2021-07-02 | 2021-07-02 | Discharge structure and sterilization device |
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| CN202110750722.9A CN113350986A (en) | 2021-07-02 | 2021-07-02 | Discharge structure and sterilization device |
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