CN111358996A - Method and equipment for effectively inactivating viruses - Google Patents
Method and equipment for effectively inactivating viruses Download PDFInfo
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- CN111358996A CN111358996A CN202010169289.5A CN202010169289A CN111358996A CN 111358996 A CN111358996 A CN 111358996A CN 202010169289 A CN202010169289 A CN 202010169289A CN 111358996 A CN111358996 A CN 111358996A
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- 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
- A61L9/18—Radiation
- A61L9/20—Ultra-violet radiation
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- 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
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- 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
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- 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
- A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
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- 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
- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/20—Method-related aspects
- A61L2209/21—Use of chemical compounds for treating air or the like
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- 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
- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/20—Method-related aspects
- A61L2209/21—Use of chemical compounds for treating air or the like
- A61L2209/212—Use of ozone, e.g. generated by UV radiation or electrical discharge
Abstract
The invention belongs to the technical field of novel coronavirus control, and particularly discloses a method and equipment for effectively inactivating viruses, wherein the method comprises the following steps: s1, carrying out charging treatment on the aerosol possibly containing pathogens; s2, applying an external electric field to the charged aerosol to enable the charged aerosol to be collected under the action of the electric field force; s3, the collected aerosol is sterilized to destroy the virus RNA structure in the aerosol, so that the virus is effectively inactivated. The invention charges the aerosol possibly containing pathogens by the charged high-voltage line electrode through the pulse high-voltage power supply, collects the charged aerosol under the action of the electric field force by applying an external electric field to the charged aerosol, and simultaneously irradiates the collected aerosol by adopting strong ultraviolet radiation to destroy the virus RNA structure in the aerosol, so that the pathogens in the aerosol lose replication capacity or activity, thereby effectively inactivating the viruses.
Description
Technical Field
The invention belongs to the technical field of novel coronavirus control, and particularly relates to a method and equipment for effectively inactivating viruses.
Background
According to the diagnosis and treatment scheme for pneumonia infected by novel coronavirus (trial fifth edition) published by Weijian Commission of China, the main transmission route of the novel coronavirus is via respiratory droplets and contact transmission. When a patient coughs or sneezes, up to 105 ten thousand droplets with the diameter of 0.5-12 microns can be discharged in a single time, and the spraying distance can reach several meters. The droplet droplets with larger particle size are not influenced by the flow of the gas phase, the falling speed is higher, the droplet droplets can be settled within the distance range of 1-2 m, and the droplet droplets with smaller particle size can continuously float in the air along with the gas flow, thus forming great threat to the infected person once being inhaled. On the other hand, the air itself has a large number of aerosol particles of different sizes suspended therein. The aerosol particles have large specific surface area and can adsorb coronavirus with the diameter of 80-140 nanometers. Although "aerosol transmission pathway is still to be clarified" is currently indicated in "pneumonia diagnosis and treatment protocol for novel coronavirus infection (trial fifth edition)", the health threat due to virus adsorption on aerosol and diffusion with air flow is not negligible.
Both of the above two points indicate that a susceptible person may develop cross-infection by inhalation of a droplet or aerosol particles (hereinafter collectively referred to as aerosol) containing a virus suspended in the air without coming into contact with a patient. The effective removal of airborne aerosols (whether they carry viruses or not) is an essential means of shutting off the airborne pathways for viruses.
Currently, the aerosol filtering device mainly uses physical filtration. The common Filter screen can not realize the High-efficient filtration to the aerosol below 1 micron, although HEPA (High efficiency particulate air Filter) Filter screen filtration efficiency is higher, the windage is big, requires highly to the system, and no matter be ordinary Filter screen or HEPA Filter screen, the surface easily causes virus accumulation or microorganism to breed after using for a certain time, makes purifier itself also become the pollution source, and indoor air quality further worsens.
Disclosure of Invention
Aiming at the defects of a physical filtering method in the prior art, the invention aims to provide an ultraviolet-assisted pulse corona discharge technology, which adopts a technical means of 'collecting first and then killing', so as to effectively inactivate viruses.
The invention provides a method for effectively inactivating viruses, which comprises the following steps:
s1: carrying out charging treatment on the aerosol possibly containing pathogens;
s2: applying an external electric field to the charged aerosol to enable the charged aerosol to be collected under the action of the electric field force;
s3: and (3) performing antivirus treatment on the collected aerosol to destroy a virus RNA (ribonucleic acid) structure in the aerosol, thereby effectively inactivating the virus.
Further preferably, in step S3, the collected aerosol is irradiated by strong ultraviolet radiation to achieve effective inactivation of virus.
Further preferably, in step S3, a multi-needle-multi-needle discharging mode is adopted, ozone is continuously generated during the discharging process, and ozone destroys unsaturated bonds in the outer membrane protein of the enveloped virus, so as to realize rapid inactivation of the enveloped virus.
Further preferably, in step S3, the virus is inactivated by continuously spraying alcohol spray or disinfectant.
The invention also provides a device for effectively inactivating viruses, which comprises: the system comprises a charge unit, a collection unit and a virus inactivation unit which are connected in sequence; the charging unit is used for charging aerosol possibly containing pathogens; the collecting unit is used for applying an external electric field to the charged aerosol to enable the charged aerosol to be collected under the action of the electric field force; the virus inactivation unit is used for performing virus inactivation treatment on the collected aerosol.
Further preferably, the charging unit is implemented in the form of a charged high voltage wire electrode or a pointed corona discharge.
Further preferably, the charged high-voltage wire electrode includes: the device comprises a first metal pipe, a metal spring, a metal air deflector and a plurality of metal wires; the first metal pipe is used for supporting a plurality of line electrodes to conduct electricity at the same time, so that high voltage is applied to the line electrodes; the metal spring is used for ensuring that the wire electrode is always in a stretched state and bears certain external disturbance, so that the wire electrode can be uniformly discharged; the metal air deflector is used for enabling aerosol particles to enter the pole plate in a short distance and enabling the aerosol particles to be dispersed as little as possible, so that the aerosol passing through the air deflector is distributed more uniformly, and meanwhile, natural wind can be guided and blown parallel to the pole plate; the wire is used to generate ions and charge the surrounding aerosol when a high voltage is applied.
Further preferably, the collecting unit is implemented by a collecting plate, the collecting plate comprising: the first flat-plate type metal plate and the second flat-plate type metal plate are arranged in a staggered mode and both consist of a plurality of metal plates which are arranged in an arrayed mode.
Preferably, the first flat-plate-type metal plate and the second flat-plate-type metal plate are both provided with through holes, and the first metal pipe and the second metal pipe are staggered; the second metal tube has a height different from a height of the third metal.
Further preferably, the virus inactivation unit comprises a strong ultraviolet lamp plate, the strong ultraviolet lamp plate consists of a row of parallel strong ultraviolet lamp light tubes, and the irradiation intensity of the strong ultraviolet lamp light tubes is greater than or equal to 180 muW/cm2。
Further preferably, the virus inactivation unit includes a multi-needle-multi-needle discharging structure for continuously generating ozone during discharging and destroying unsaturated bonds in an outer membrane protein of the enveloped virus by the ozone, thereby rapidly inactivating the enveloped virus.
The invention charges the aerosol possibly containing pathogens by the charged high-voltage line electrode through the pulse high-voltage power supply, collects the charged aerosol under the action of the electric field force by applying an external electric field to the charged aerosol, and irradiates the collected aerosol by using strong ultraviolet radiation to destroy the virus RNA structure in the aerosol and make the pathogens in the aerosol lose replication capacity or activity, thereby effectively inactivating the viruses.
Drawings
FIG. 1 is a flow chart of an implementation of a method for effectively inactivating viruses according to the present invention;
FIG. 2 is a functional block diagram of an apparatus for inactivating viruses according to the present invention;
FIG. 3 is a schematic exploded view of a main structure of an apparatus for effectively inactivating viruses according to an embodiment of the present invention;
FIG. 4 is a top view of the structure of an apparatus for effectively inactivating viruses according to an embodiment of the present invention;
fig. 5 is a data diagram illustrating a ratio of a pulse to a dc corona particle charge according to an embodiment of the present invention.
In the drawings, wherein like reference numerals denote the same physical quantities, the meanings of all reference numerals in the description are explained as follows:
the device comprises a shell 1, a first metal tube 2, a second metal tube 3, a third metal tube 4, a metal air deflector 5, an insulating tube sleeve 6, a first flat metal plate 7, a second flat metal plate 8, a strong ultraviolet lamp plate 9 and a metal spring 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a method and equipment for inactivating novel coronavirus based on a strong ultraviolet light pulse corona discharge technology; the technical route comprises the following steps: the charged high-voltage line electrode charges aerosol possibly containing pathogens through a pulse high-voltage power supply, an external electric field is applied to the charged aerosol, the charged aerosol is collected to a metal polar plate under the action of the electric field force, and meanwhile, the collection polar plate is irradiated by strong ultraviolet radiation to damage a virus RNA structure so that the virus RNA structure loses replication capacity or activity.
The invention does not need any filter screen, has low manufacturing, operating and maintaining cost, can effectively inactivate viruses in aerosol, and can meet the urgent requirements of killing the viruses in indoor spaces such as clinic halls, wards, shelter hospitals and the like. The present invention is effective not only against novel coronaviruses, but also against other viruses that can be transmitted by aerosol.
The invention provides a method for effectively inactivating viruses, which comprises the following steps:
s1: carrying out charging treatment on the aerosol possibly containing pathogens;
s2: applying an external electric field to the charged aerosol to enable the charged aerosol to be collected under the action of the electric field force;
s3: and (4) carrying out antivirus treatment on the collected aerosol to destroy a virus RNA structure in the aerosol, thereby effectively inactivating the virus.
In the embodiment of the present invention, in step S2, since the power supply applying the external electric field may affect the electric charge of the aerosol particles, a power supply having a voltage peak of 120kV to 150kV, a pulse width not greater than 1000ns, and a rising front edge less than 100ns may be used, and a vertical electric field perpendicular to two adjacent plates is formed after the power supply is applied.
In the embodiment of the present invention, there are various ways to implement step S3, for example, the collected aerosol can be irradiated by strong ultraviolet radiation, and in order to achieve the sterilization effect, the irradiation intensity of the ultraviolet light source must be greater than or equal to 40 μ W/cm2. Further preferablyThe irradiation intensity of a high-intensity ultraviolet lamp can be more than 180 mu W/cm2To realize better sterilization and disinfection effects; specifically, the virus inactivation can be realized by adopting ultraviolet irradiation with the wavelength of 254nm or less; in the embodiment of the invention, ultraviolet light with the wavelength of 253.7nm is adopted to sterilize and disinfect at a position 1m away from aerosol, so that viruses can be inactivated quickly and effectively.
In the embodiment of the invention, the equipment for effectively inactivating the virus is in a flow-through mode, so that the equipment can be always used in an application environment, the irradiation time is enough, and the equipment can be ensured to be always operated in the environment. The shortest number of sterilization minutes is 2700 divided by the irradiation intensity at the time of close-up, for example, the irradiation intensity at the time of close-up is 500. mu.W/cm2Then, the irradiation time for all inactivation is 2700/500-5.4 minutes, the inactivation efficiency is high, and the speed is high.
In step S3, virus inactivation may be achieved by constructing a virus inactivation unit that continuously sprays alcohol spray or disinfectant.
As another embodiment of the present invention, in step S3, a discharge region can be constructed, for example, in the form of multi-needle-multi-needle discharge, during which ozone is continuously generated, which can destroy unsaturated bonds in the outer membrane protein of enveloped virus, and the biochemical action is transferred almost instantaneously, thereby rapidly inactivating enveloped virus.
As shown in fig. 2, the present invention also provides an apparatus for effectively inactivating viruses, comprising: the system comprises a charge unit, a collection unit and a virus inactivation unit which are connected in sequence; wherein, the charging unit is used for charging the aerosol possibly containing pathogens; the collecting unit is used for applying an external electric field to the charged aerosol so that the aerosol is collected under the action of the electric field force; the virus inactivation unit is used for performing virus inactivation treatment on the collected aerosol.
In the embodiment of the invention, the charging unit can be realized by adopting a charging high-voltage wire electrode; tip corona discharge forms such as needle electrodes, sawtooth electrodes, BS prickle electrodes, RS prickle electrodes and the like can also be adopted; the charging function of the particles can be realized in the above mode.
As an embodiment of the present invention, when the charging unit is implemented using a charging high-voltage wire electrode, the charging high-voltage wire electrode includes: the device comprises a first metal pipe, a metal spring, a metal air deflector and a plurality of metal wires; the first metal pipe supports a plurality of line electrodes and applies high voltage to all the line electrodes through the first metal pipe; the metal spring ensures that the wire electrode is always in a stretched state and can bear certain external disturbance (touch when the power supply is turned off or shaking in the conveying process), so that the wire electrode can be subjected to a uniform discharge process, and unnecessary point discharge reduction efficiency caused by bending of the wire electrode is avoided; the air deflector enables particles to enter between the polar plates in a short distance and disperse to the edge of the shell 1 as little as possible, so that aerosol passing through the air deflector is distributed more uniformly, and meanwhile, natural wind can be guided and blown parallel to the polar plates; the metal wire generates ions after applying high voltage to charge the surrounding aerosol, and the metal wire and the aerosol form a charged high-voltage wire electrode together to charge the aerosol.
In the embodiment of the present invention, the collecting unit may be implemented by using a collecting electrode plate, or may be implemented by using other structures capable of implementing an aerosol collecting function.
As an embodiment of the present invention, when the collecting unit is implemented using collecting plates, the collecting plates include first and second flat-plate type metal plates 7 and 8 that are alternately arranged to collect the charged aerosol. The interlaced high-voltage polar plates and the ground polar plates generate high-field-intensity areas, aerosol charged by the linear electrodes directionally moves to the polar plates and is captured under the action of an electric field, and the aerosol is mainly subjected to gravity, electrostatic field force, dipole force and interparticle acting force in the migration process. For small particles, gravity can be ignored, dipole force is generally weaker than electrostatic field force, and the influence is obvious only when the action at the boundary is obvious due to the uneven distribution of the electric field and the action force between the particles needs to be small. Therefore, the directional migration of the particles to the polar plate in the electric dust collector is mainly caused by electrostatic field force.
The staggered arrangement is to facilitate the structure of the device, and the high-voltage polar plate can penetrate through the third metal tube 4 at a height higher than that of the other polar plate only when the high-voltage polar plate is slightly higher, so that the fixation of the polar plates and the charge of each polar plate are completed; is more convenient in physical sense.
The first flat-plate-type metal plates 7 and the second flat-plate-type metal plates 8 are arranged in a staggered mode, and the fact that the two sides of each high-voltage pole plate are adjacent to the ground pole plates is guaranteed. Taking three plates as an example for explanation, the middle is a high-voltage plate, and the two sides are grounding plates, the implementation mode is divided into two high-field-intensity areas, and the multiple plates are implemented without conflict with the two plates, and only the number of the high-field-intensity areas formed by the high-voltage plate and the grounding plate is different.
Wherein, the first plate-type metal plate 7 can be formed by arranging a plurality of metal plates, the second plate-type metal plate 8 can also be formed by arranging a plurality of metal plates, and the more the number of the metal plates is, the higher the collection efficiency and the virus killing efficiency are.
Fig. 3 shows a case where the first flat plate-shaped metal plate 7 and the second flat plate-shaped metal plate 8 each comprise 8 metal plates; since the more the number of the metal plates, the higher the collecting efficiency and the virus killing efficiency, the number of the metal plates may be set as needed in practical cases.
In the embodiment of the invention, the first flat-plate-type metal plate 7 and the second flat-plate-type metal plate 8 are both provided with through holes and can be staggered by the second metal pipes 3 and the third metal pipes 4 with different heights, the second flat-plate-type metal plate 8 is connected with the shell 1 through the higher third metal pipes 4 by the insulating pipe sleeves 6, and the first flat-plate-type metal plate 7 with the lower height is directly connected with the shell 1 through the second metal pipes 3.
In the embodiment of the invention, the virus inactivation unit can be realized by adopting a strong ultraviolet lamp light plate, and can also adopt an arc lamp; certainly, the virus-inactivating unit is not limited to the lamp panel and the arc lamp, and can continuously spray alcohol spray or disinfectant; a discharge region, such as a multi-needle-multi-needle discharge form, can be constructed, ozone is continuously generated in the discharge process, the ozone can destroy unsaturated bonds in the outer membrane protein of the enveloped virus, and the transmission of the biochemical effect is almost instantaneous, so that the enveloped virus can be quickly inactivated.
In addition, ozone is also generated in the wire electrode discharge process, and the ultraviolet light plate area and the ozone are considered to jointly act to complete the inactivation process.
As an embodiment of the present invention, when the virus inactivation unit is implemented using an intense ultraviolet lamp light plate, the intense ultraviolet lamp light plate includes: a row of strong ultraviolet lamp light tubes arranged in parallel; the irradiation intensity of the high-intensity ultraviolet lamp is more than 180 mu W/cm2(253.7nm at a distance of 1 m), in general, the higher the power of the ultraviolet lamp tube, the better the effect, and the most fundamental index is the irradiation intensity of the ultraviolet lamp and is in direct proportion to the power.
The method and the equipment for effectively inactivating the virus do not need to detect whether the aerosol contains the pathogen in advance, have wide application occasions, can kill the virus indiscriminately in various indoor occasions such as an outpatient hall, a ward, a shelter hospital and the like, and meet the virus killing requirements in various spaces.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the method and apparatus for effectively inactivating viruses provided by the present invention are further described in detail below with reference to fig. 2-5 and the following specific embodiments:
fig. 3 and 4 illustrate an apparatus for effectively inactivating viruses according to a preferred embodiment of the present invention, including: a shell 1 and a strong ultraviolet lamp light plate 9; a charged high-voltage line electrode and a collecting polar plate are arranged in the shell 1; the charged high-voltage line electrode is formed by assembling a first metal pipe 2, metal springs 10, a metal air deflector 5 and a plurality of metal wires 11, wherein the metal wires 11 are connected with the first metal pipe 2 through the metal springs 10 at two ends, and the first metal pipe 2 is connected with the shell 1 through an insulating pipe sleeve 6; the collecting polar plate is formed by assembling a first flat-plate type metal plate 7 and a second flat-plate type metal plate 8, through holes are formed in the first flat-plate type metal plate 7 and the second flat-plate type metal plate 8, the first flat-plate type metal plate and the second flat-plate type metal plate are placed in a staggered mode through two second metal pipes 3 and three metal pipes 4 with different heights, the second flat-plate type metal plate 8 is connected with the shell 1 through the higher third metal pipe 4 through an insulating pipe sleeve 6, and the first flat-plate type metal plate 7 with the lower height is directly connected with the shell 1 through the second metal pipes 3; the strong ultraviolet lamp light plate 9 is composed of a row of strong ultraviolet lamp light tubes arranged in parallel.
For the charging of aerosol, the pulse power supply has better charging effect, specifically, in the same line plate type reactor, pulse corona discharge can provide higher peak voltage than direct current corona discharge, so that the charging effect between charged particles and particulate matters is intensified, and finally, the charging quantity of the particulate matters is improved.
The working principle of the electric dust collector is that the particles are moved to a dust collecting polar plate and are settled on the polar plate based on the coulomb force acted on the dust particles, the coulomb force is dependent on the charge quantity of the particles on one hand, and is dependent on the space electric field intensity of an electric field channel on the other hand, in order to meet certain dust collection efficiency, the size of the dust collector is correspondingly reduced and the investment of equipment is reduced by improving the coulomb force of the particles, the way of improving the charge quantity of the particles is to increase the charge quantity of the particles and the dust collecting electric field intensity, and the direct current power supply electric dust collector brings obstacles to improving the coulomb force of the particles due to the limitation of the gas breakdown critical field intensity ((2-3) × 106V/m), so the improvement of the charge quantity of the particles is the most effective.
There are two main cases of electric field charge and diffusion charge due to the particle charging mechanism. Since the ions have low energy in the dc corona field, the energy for their own thermal motion is small, and they are in a "cold state", which is difficult to increase the charge amount of the dust particles. In order to increase the charge amount of the particles, a pulse power source may be used for charging.
The method for effectively inactivating the viruses based on the equipment comprises the following steps:
the charged high-voltage wire electrode carries out charged treatment on aerosol possibly containing pathogens by a pulse high-voltage power supply;
applying an external electric field to the charged aerosol to enable the charged aerosol to be collected under the action of the electric field force;
the collected aerosol is irradiated by strong ultraviolet radiation to destroy the virus RNA structure in the aerosol, thereby effectively inactivating the virus.
Specifically, the pulse power supply applies high voltage to the charged wire electrode 11 and the high-voltage polar plate 8, the low-voltage polar plate 7 is grounded, the aerosol obtains charges at the wire electrode 11, the charges can be quickly captured by the polar plates when passing through the high field intensity of the dust collection polar plates 7 and 8, the charges are effectively inactivated under the irradiation of the strong ultraviolet light plate 9, air can be purified, and the pollution of solid particles PM2.5 is reduced.
As shown in FIG. 5, in the plate electrode structure, a DC voltage is applied to the vicinity of the spark discharge potential, about 45kV to 50 kV. By comparing with the pulse discharge particle charge, the particle charge under pulse discharge is found to be significantly improved compared with the particle charge under direct current corona discharge. As can be seen from FIG. 5, the charge capacity was improved by 13.7 times for the 0.1 μm particles, 17.1 times for the 10 μm particles, and 26 times for the 0.8 μm particles. Therefore, the pulse discharge contributes to increase of the charge amount of the particles, particularly, the charge amount of the particles smaller than 2 μm, which is one of effective methods for increasing the particle collection efficiency.
The invention charges the aerosol possibly containing pathogens by the charged high-voltage line electrode through the pulse high-voltage power supply, efficiently collects the charged aerosol under the action of the electric field force by applying an external electric field to the charged aerosol, and simultaneously effectively irradiates the collected aerosol by using strong ultraviolet radiation to destroy the virus RNA structure in the aerosol, so that the pathogens in the aerosol lose replication capacity or activity, thereby effectively inactivating viruses.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for effectively inactivating a virus, comprising the steps of:
s1: carrying out charging treatment on the aerosol possibly containing pathogens;
s2: applying an external electric field to the charged aerosol to enable the charged aerosol to be collected under the action of the electric field force;
s3: and (4) carrying out antivirus treatment on the collected aerosol to destroy a virus RNA structure in the aerosol, thereby effectively inactivating the virus.
2. The method of claim 1, wherein in step S3, the collected aerosol is irradiated by intense uv radiation to achieve effective inactivation of the virus.
3. The method of claim 1, wherein in step S3, a multi-pin-multi-pin discharging mode is adopted, ozone is continuously generated during the discharging process, and ozone destroys unsaturated bonds in the outer membrane protein of the enveloped virus, thereby realizing rapid inactivation of the enveloped virus.
4. The method according to any one of claims 1 to 3, wherein the virus inactivation is effected by continuously spraying an alcohol spray or a sterilizing liquid at step S3.
5. An apparatus for effecting inactivation of a virus, comprising: the system comprises a charge unit, a collection unit and a virus inactivation unit which are connected in sequence;
the charging unit is used for charging aerosol possibly containing pathogens;
the collecting unit is used for applying an external electric field to the charged aerosol to enable the charged aerosol to be collected under the action of the electric field force;
the virus inactivation unit is used for performing virus inactivation treatment on the collected aerosol.
6. The apparatus of claim 4, wherein the charging unit is implemented in the form of a charged high voltage wire electrode or a pointed corona discharge.
7. The apparatus of claim 6, wherein the charged high-voltage wire electrode comprises: the device comprises a first metal pipe, a metal spring, a metal air deflector and a plurality of metal wires;
the first metal pipe is used for supporting a plurality of line electrodes to conduct electricity at the same time, so that high voltage is applied to the line electrodes;
the metal spring is used for ensuring that the wire electrode is always in a stretched state and bears certain external disturbance, so that the wire electrode can be uniformly discharged;
the metal air deflector is used for enabling aerosol particles to enter the polar plate in a short distance and enabling the aerosol particles to disperse as little as possible;
the wire is used to generate ions and charge the surrounding aerosol when a high voltage is applied.
8. The apparatus of claim 5, wherein the collection unit is implemented with a collection pad comprising: the first flat-plate type metal plate and the second flat-plate type metal plate are arranged in a staggered mode and both consist of a plurality of metal plates which are arranged in an arrayed mode;
through holes are formed in the first flat plate type metal plate and the second flat plate type metal plate respectively, and the second metal pipe and the third metal pipe are placed in a staggered mode; the second metal tube has a height different from a height of the third metal.
9. The apparatus of claim 5, wherein the virus inactivation unit comprises a light-intensity-ultraviolet lamp panel consisting of a row of parallel light-intensity-ultraviolet lamps having an irradiance of 180 μ W/cm or higher2。
10. The apparatus of claim 5, wherein the virus inactivation unit comprises a multi-needle-multi-needle discharging structure for continuously generating ozone during discharging and rapidly inactivating the enveloped virus by destroying unsaturated bonds in outer membrane proteins of the enveloped virus by the ozone.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112314835A (en) * | 2021-01-06 | 2021-02-05 | 浙江大学 | Sterilizing method and system for inactivating novel coronavirus in cold chain food by ionizing radiation |
| CN113566367A (en) * | 2020-10-26 | 2021-10-29 | 梅代尔有限公司 | Air disinfection system and air purification method |
| CN113670888A (en) * | 2021-06-25 | 2021-11-19 | 张玉芝 | Method for detecting microorganisms, gas components and particulate matters in indoor air |
| CN113670889A (en) * | 2021-06-25 | 2021-11-19 | 张玉芝 | Gas comprehensive detection device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928362A (en) * | 2020-07-13 | 2020-11-13 | 香港环境科技研究院有限公司 | System and device with function of killing novel coronavirus and air sterilizer |
| CN112058077A (en) * | 2020-08-21 | 2020-12-11 | 中国科学院生态环境研究中心 | Equipment for treating volatile organic compounds and bioaerosol by using bio-photoelectric multi-energy field |
| CN112076623A (en) * | 2020-08-21 | 2020-12-15 | 中国科学院生态环境研究中心 | Method for treating volatile organic compounds and bioaerosol |
| CN113566367A (en) * | 2020-10-26 | 2021-10-29 | 梅代尔有限公司 | Air disinfection system and air purification method |
| JP7398607B2 (en) | 2020-11-17 | 2023-12-15 | アハ カンパニー リミテッド | Air purifier with improved ability to remove harmful substances and viruses from the air |
| CN112314835A (en) * | 2021-01-06 | 2021-02-05 | 浙江大学 | Sterilizing method and system for inactivating novel coronavirus in cold chain food by ionizing radiation |
| CN112314835B (en) * | 2021-01-06 | 2021-04-06 | 浙江大学 | Sterilizing method and system for inactivating novel coronavirus in cold chain food by ionizing radiation |
| CN113670888A (en) * | 2021-06-25 | 2021-11-19 | 张玉芝 | Method for detecting microorganisms, gas components and particulate matters in indoor air |
| WO2022267966A1 (en) * | 2021-06-25 | 2022-12-29 | 张玉芝 | Method for detecting microorganisms, gas components and particulate matter in indoor air |
| WO2022267965A1 (en) * | 2021-06-25 | 2022-12-29 | 张玉芝 | Comprehensive gas testing apparatus |
| CN113670889A (en) * | 2021-06-25 | 2021-11-19 | 张玉芝 | Gas comprehensive detection device |
| CN114755067A (en) * | 2022-03-16 | 2022-07-15 | 北京市科学技术研究院城市安全与环境科学研究所 | Aerosol particulate matter collecting device and collecting method |
| CN114755067B (en) * | 2022-03-16 | 2024-01-26 | 北京市科学技术研究院城市安全与环境科学研究所 | Aerosol particulate matter collecting device and collecting method |
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