CN111457497A - Corona discharge plasma air purification device and method - Google Patents

Corona discharge plasma air purification device and method Download PDF

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Publication number
CN111457497A
CN111457497A CN202010273038.1A CN202010273038A CN111457497A CN 111457497 A CN111457497 A CN 111457497A CN 202010273038 A CN202010273038 A CN 202010273038A CN 111457497 A CN111457497 A CN 111457497A
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China
Prior art keywords
air
corona discharge
electrode
plasma
filter
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CN202010273038.1A
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Chinese (zh)
Inventor
张建斌
陈长才
肖雷
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LIANYUNGANG YOUYUAN MEDICAL EQUIPMENT MANUFACTURING CO LTD
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LIANYUNGANG YOUYUAN MEDICAL EQUIPMENT MANUFACTURING CO LTD
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Priority to CN202010273038.1A priority Critical patent/CN111457497A/en
Publication of CN111457497A publication Critical patent/CN111457497A/en
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    • 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
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • 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
    • B01D53/32—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters
    • 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
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • 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
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
    • 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
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
    • 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
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/818—Employing electrical discharges or the generation of a plasma

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

The invention discloses a corona discharge plasma air purification device and a method in the technical field of air purification, and the corona discharge plasma air purification device comprises a purification main body, wherein an air filter, an active carbon filter, a plasma generator and a photocatalyst generator are sequentially arranged in the purification main body from left to right; the plurality of mesh strip-shaped electrodes are adopted, so that the distance between each mesh strip-shaped electrode and the negative plate is the same, a uniform electric field is generated, the phenomenon of wire breakage of the wire-shaped electrode is solved, the service life is longer, and high-density plasma can be generated.

Description

Corona discharge plasma air purification device and method
Technical Field
The invention relates to the technical field of air purification, in particular to a corona discharge plasma air purification device and method.
Background
At present, widely used air disinfectors are ozone disinfectors and ultraviolet disinfectors.
The principle of the ozone sterilizer is to ionize oxygen ions (02-) in the air into active oxygen (O3), and the ozone sterilizer needs to be matched with an oxygen generator or an oxygen tube, so that the ozone can achieve a certain concentration to play a role in sterilization. But the ozone concentration in the air reaches 0.1mg/m 3, the ozone can stimulate eyes, nose, throat and respiratory tract of people, and the ozone smells at 0.01-0.02mg/m 3; ozone has toxic effect on human body when reaching a certain concentration, can not be used under the condition of human body, and can enter the room after being shut down for 40 minutes after being disinfected.
The principle of the ultraviolet ray sterilizer is that after bacteria absorb ultraviolet rays, DNA chains are broken to cause cross-linking and breaking of nucleic acid and protein, the biological activity of the nucleic acid is killed, the bacteria die, and the sterilization efficiency can reach 96-99.9%. The service time of the ultraviolet lamp is inversely proportional to the irradiation intensity, and the lamp tube needs to be replaced when the service life of the ultraviolet lamp is not more than 1000 hours, so the loss is large. And the irradiation of ultraviolet rays is harmful to the skin and eyes of a human body, and cannot be used under the condition of someone.
Plasma is a basic form of the presence of matter, and is an assembly of charged particles (including positive ions, negative ions, electrons, etc.) and various neutral particles (atoms, molecules, radicals, and reactive groups), which are macroscopically electrically neutral. The plasma generated by the plasma air disinfection machine is atmospheric pressure non-thermal equilibrium plasma, commonly called cold plasma, and has the advantages that the temperature of plasma gas is very low and is generally close to room temperature, but the plasma gas has electrons with very high temperature and is rich in a large number of free radicals and active groups. These electrons, free radicals and active groups play an important role in efficiently killing bacteria in the air. When the outside air passes through the plasma discharge area, the purpose of quickly killing bacteria in the air can be achieved.
Compared with the traditional ultraviolet air disinfection machine and the ozone disinfection machine, the plasma air disinfection and purification machine has the characteristics of good sterilization effect, high sterilization speed, no secondary pollution, low energy consumption and the like, can decompose organic pollutants such as formaldehyde, benzene and the like, can be used in the environment with human and machine coexistence, and has wide application places.
However, the existing plasma air disinfection purifier adopts a discharge technology that discharge sawteeth are vertical to a negative plate, as shown in the attached figures 2-4, the discharge is that a saw tooth tip (equivalent to one point) discharges to the ground, point-to-point discharge is in a strip shape, plasma is not basically formed, the speed is low, the plasma density is low, and pollutants in the air cannot be effectively treated.
Based on the above, the invention designs a corona discharge plasma air purification device to solve the above problems.
Disclosure of Invention
The present invention is directed to a corona discharge plasma air cleaning device to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a corona discharge plasma air purification device, including purifying the main part, air cleaner has set gradually from left to right in purifying the main part, activated carbon filter, plasma generator and photocatalyst generator, plasma generator includes insulating support, be fixed with electrode group on the insulating support, electrode group includes a plurality of negative plates on the insulating support of evenly being fixed in along vertical direction, be equipped with the guipure electrode between two adjacent negative plates, the one end of guipure electrode is equipped with the power connection end, and be connected with high-voltage pulse power through the power connection end, the negative plate is the U-shaped, and one end ground connection, the border department of guipure electrode evenly is equipped with a plurality of sawtooth, and the sawtooth is parallel with the negative plate.
Preferably, two parallel mesh belt electrodes are arranged between two adjacent mesh negative plates, and the two mesh belt electrodes are positioned in the same plane.
Preferably, the insulating support includes three groups of fixing plates, each of which includes two fixing plates, and is sequentially disposed at both sides of the left, middle and right ends of the electrode group.
Preferably, the distance between the mesh belt electrode and the negative plates on the upper side and the lower side of the mesh belt electrode is equal.
Preferably, the air filter is a diaphragm-free medium-efficiency filter.
A corona discharge plasma air purification method comprises the following steps:
s1, starting external equipment to enable outside air to flow, enabling the outside air to enter an air purification device, and sequentially filtering the outside air through an air filter and an active carbon filter;
s2, starting the plasma generator to enable the power connection end to be connected with a high-voltage pulse power supply, enabling a sawtooth tip on a mesh belt electrode to simultaneously carry out corona discharge on two negative plates which are parallel up and down to form a horn shape, enabling air filtered by an air filter and an active carbon filter to enter the plasma generator, fully ionizing the air, and achieving the disinfection and purification effects;
s3, the air after evolution enters a photocatalyst filter for further purification and filtration, and then the clean air is discharged from the other side of the device;
and S4, turning off the plasma generator and external equipment, and finishing air purification.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, horn-shaped high-density corona discharge is generated in the discharge area of the plasma generator to generate high-concentration plasma, so that air is fully ionized, a better disinfection and purification effect is achieved, formaldehyde, bacteria and viruses are decomposed by electric shock, organic pollutants are decomposed, and clean air is output; the plurality of mesh strip-shaped electrodes are adopted, so that the distance between each mesh strip-shaped electrode and the negative plate is the same, a uniform electric field is generated, the phenomenon of wire breakage of the wire-shaped electrode is solved, the service life is longer, and high-density plasma can be generated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a plasma air purification apparatus according to the present invention;
FIG. 2 is a schematic diagram of a prior art plasma generator;
FIG. 3 is a front view of a prior art plasma generator;
FIG. 4 is a partially enlarged view of a plasma generator D according to the prior art (the arrows in the figure indicate the state of a discharge in the form of a strip);
FIG. 5 is a schematic view of the structure of the plasma generator according to the present invention;
FIG. 6 is a front view of the plasma generator of the present invention;
fig. 7 is a partially enlarged view of the plasma generator E according to the present invention (the arrow in the figure indicates the flare-like discharge state).
In the drawings, the components represented by the respective reference numerals are listed below:
1-air filter, 2-active carbon filter, 3-photocatalyst filter, 4-plasma generator, 5-mesh belt electrode, 6-negative plate, 7-power supply connecting end and 8-insulating support.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to the drawings, the present invention provides a technical solution: the utility model provides a corona discharge plasma air purification device, including purifying the main part, purify the well from left to right air cleaner 1 that has set gradually of main part, activated carbon filter 2, plasma generator 4 and photocatalyst generator, plasma generator 4 includes insulating support 8, be fixed with the electrode group on the insulating support 8, the electrode group includes along a plurality of negative plates 6 on vertical direction evenly is fixed in insulating support 8, be equipped with guipure electrode 5 between two adjacent negative plates 6, guipure electrode 5's one end is equipped with power connection end 7, and be connected with high-voltage pulse power through power connection end 7, negative plate 6 is the U-shaped, and one end ground connection, guipure electrode 5's border department evenly is equipped with a plurality of sawtooth, and the sawtooth is parallel with negative plate 6.
Wherein, be equipped with two parallel guipure electrodes 5 between two adjacent net negative plate 6, and two guipure electrodes 5 are located the coplanar.
Wherein, the insulating support 8 includes three groups of fixed plates, includes two fixed plates each time, and sets up in proper order in the both sides of the left end, middle part and the right-hand member of electrode group.
Wherein, the distance between the mesh belt electrode 5 and the negative plates 6 on the upper and lower sides is equal.
Wherein, the air filter 1 adopts a middle-effect filter without a clapboard.
A corona discharge plasma air purification method comprises the following steps:
s1, starting external equipment to enable outside air to flow, enabling the outside air to enter an air purification device, and sequentially filtering the outside air through an air filter 1 and an active carbon filter 2;
s2, starting the plasma generator 4 to enable the power connection end 7 to be connected with a high-voltage pulse power supply, enabling a sawtooth tip on the mesh belt electrode 5 to simultaneously carry out corona discharge on two negative plates 6 which are parallel up and down to form a horn shape, enabling air filtered by the air filter 1 and the activated carbon filter 2 to enter the plasma generator 4 to fully ionize the air, and achieving the disinfection and purification effects;
s3, the air after evolution enters the photocatalyst filter 3 for further purification and filtration, and then the clean air is discharged from the other side of the device;
s4, the plasma generator 4 and the external equipment are turned off, and the air purification is finished.
Wherein, when the high frequency voltage reaches several kilovolts to several tens kilovolts, a horn-shaped taper high-density corona discharge is generated in the discharge region, and a high-concentration plasma is generated.
This technical scheme adopts U type plate electrode, can reduce the circulation speed of air in the electric field, makes the abundant ionization of air, reaches better disinfection purifying effect, decomposes organic pollutant, the clean air of output to formaldehyde, bacterium and virus electric shock decomposition.
This technical scheme adopts a plurality of netted banding electrodes or sawtooth point form electrode, guarantees that every netted banding electrode or sawtooth point form electrode is the same with 6 distances of negative plate, produces even unanimous electric field, can the multiunit combination in proper order, solves filiform electrode disconnected silk phenomenon simultaneously, and life is longer, can produce high density plasma again.
The point among the prior art produces strip corona discharge to board direct discharge, and ozone content is high, can not the man-machine coexistence, and the point is easy to discharge high temperature passivation and influence the effect of discharging, adopts among this technical scheme that the point combines special plasma power supply to the structure of discharging of board direct discharge to produce tubaeform toper corona discharge, is different from the discharge mode of other plasma air sterilizing machines, can produce the plasma of higher density, and disinfection purifying effect is stronger.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. The utility model provides a corona discharge plasma air purification device, includes the purification main part, its characterized in that, air cleaner (1), activated carbon filter (2), plasma generator (4) and photocatalyst generator have set gradually in the purification main part from left to right, plasma generator (4) are fixed with the electrode group on insulating support (8) including insulating support (8), the electrode group includes a plurality of negative plates (6) on insulating support (8) are evenly fixed in along vertical direction, are equipped with guipure electrode (5) between two adjacent negative plates (6), the one end of guipure electrode (5) is equipped with power connection end (7) to be connected with high-voltage pulse power through power connection end (7), negative plate (6) are the U-shaped, and one end ground connection, the border department of guipure electrode (5) evenly is equipped with a plurality of sawtooth, and the sawteeth are parallel to the negative plate (6).
2. A corona discharge plasma air cleaning device according to claim 1, wherein two parallel mesh belt electrodes (5) are arranged between two adjacent mesh negative plates (6), and the two mesh belt electrodes (5) are located in the same plane.
3. Corona discharge plasma air cleaning apparatus according to claim 1, wherein said insulating support (8) comprises three sets of fixing plates, two at a time, and is disposed in sequence on both sides of the left, middle and right ends of the electrode set.
4. A corona discharge plasma air cleaning device according to claim 1, wherein the distance between the mesh belt electrode (5) and the negative electrode plates (6) on both upper and lower sides thereof is equal.
5. Corona discharge plasma air cleaning device as claimed in claim 1, characterized in that the air filter (1) is a partitionless medium effect filter.
6. A corona discharge plasma air purification method is characterized by comprising the following steps:
s1, starting external equipment to enable outside air to flow, enabling the outside air to enter an air purification device, and sequentially filtering the outside air through an air filter (1) and an activated carbon filter (2);
s2, starting a plasma generator (4), connecting a power supply connecting end (7) with a high-voltage pulse power supply, enabling a sawtooth tip on a mesh belt electrode (5) to simultaneously carry out corona discharge on two negative plates (6) which are parallel up and down to be horn-shaped, and enabling air filtered by an air filter (1) and an active carbon filter (2) to enter the plasma generator (4) to fully ionize the air to achieve the disinfection and purification effects;
s3, the air after evolution enters a photocatalyst filter (3) for further purification and filtration, and then the clean air is discharged from the other side of the device;
and S4, turning off the plasma generator (4) and external equipment, and finishing air purification.
CN202010273038.1A 2020-04-09 2020-04-09 Corona discharge plasma air purification device and method Pending CN111457497A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111757584A (en) * 2020-08-11 2020-10-09 深圳市普瑞艾尔科技有限公司 Plasma generator for corona discharge between two groups of parallel metal wires on flat plate
CN113413716A (en) * 2021-05-18 2021-09-21 武汉理工大学 Colleges and universities' welding training center distributing type plasma corona welding cigarette processing system
CN114939342A (en) * 2022-06-07 2022-08-26 西安交通大学 Small-space air purification device based on corona discharge and use method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111757584A (en) * 2020-08-11 2020-10-09 深圳市普瑞艾尔科技有限公司 Plasma generator for corona discharge between two groups of parallel metal wires on flat plate
CN113413716A (en) * 2021-05-18 2021-09-21 武汉理工大学 Colleges and universities' welding training center distributing type plasma corona welding cigarette processing system
CN114939342A (en) * 2022-06-07 2022-08-26 西安交通大学 Small-space air purification device based on corona discharge and use method thereof

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