A module for capturing, killing, and desensitizing fine particulate matter pollution sources

Abstract

The present invention relates to the field of air purification, and particularly to a module for capturing, killing, and desensitizing fine particulate matter pollution sources, which includes a charging component for charging fine particulate matter pollution sources passing through; an electrostatic particulate matter collector for collecting charged fine particulate matter pollution sources. The electrostatic particulate matter collector includes at least two mutually parallel electrode plates, the surfaces of the electrode plates are coated with a photocatalytic coating, and the electrode plates are of a transparent structure; some of the electrode plates are high-voltage electrode plates, and the other part are low-voltage electrode plates. The high-voltage electrode plates and the low-voltage electrode plates are arranged alternately and at intervals to form a trapping channel with a high-voltage electric field. The charging component is located at the front end of the air inlet of the trapping channel; a light-emitting component for emitting light to the electrode plates; and a detection component for detecting the light intensity after the light passes through the electrode plates. It can efficiently capture particulate matter and can quickly kill or desensitize the contained microorganisms and allergens in-situ.

Description

Technical Field

[0001] The present invention relates to the field of air purification, and particularly to a module for capturing, killing and desensitizing fine particulate matter pollution sources. Background Art

[0002] Fine particulate matter pollution sources in the air mainly include fine particulate matter (PM10 / PM2.5 / PM1.0), suspended microorganisms (fungi / molds and their spore propagules, bacteria, viruses and virus adherents), allergens (pollen, mites and mite corpses, mite excretions and secretions, etc.). These fine particulate matter pollution sources directly lead to the occurrence of respiratory diseases, infectious diseases and allergic diseases.

[0003] Taking fine particulate matter represented by atmospheric haze pollution as an example, its main components are geological dust (water-insoluble particulate matter such as carbonates, silicates, oxides, etc.), which comes from the natural weathering of rocks and soils; water-soluble salts formed by sulfur and nitrogen oxides under the action of photochemical reactions, including sulfate and ammonium salt compounds; organic carbon and free elemental carbon pollution generated by fossil fuels (petroleum, coal). The fine particulate matter pollution of atmospheric haze pollution has a relatively wide distribution range, with a particle size of 0.01μm to 100μm, and the peak of the weighted particle size distribution in the investigation and statistics is 0.8 to 1.0μm.

[0004] For the purification of fine particulate matter, typically, a paper filter material is formed by stacking ultra-fine fibers and processed by folding to form a particulate filter. The paper filter can be made into a filter with high filtration efficiency, but it also has the weaknesses of large air flow resistance and high use cost. Another type is an electrostatic particulate filter, which uses a parallel electrostatic field structure to collect charged fine particulate matter on the surface of the electrode plate under the action of Coulomb force. The electrostatic filter has the characteristics of high efficiency, low wind resistance and reusability. However, if the structure and parameter design are improper, problems such as spark discharge, ozone generation, and surface polarization failure will occur.

[0005] Among suspended microorganisms, fungi, molds and spore propagules have a relatively large particle size, distributed in 2 - 10μm. Bacteria are dispersed in the air in the form of colonies, with an equivalent particle size of 2 - 100μm. Viruses are biological structures without cell walls, with a particle size of 15 - 120nm. They cannot exist alone in the air and must attach to parasitic cell bodies or secretions. For example, they are dispersed in the air in the form of particles formed by sneezing or coughing droplets. Research shows that after the water in the stable droplets formed by sneezing evaporates, droplets with a particle size of 0.8 - 2.4μm are formed, which can form aerosols in the air and suspend and migrate for a long time. The virus components contained can cause infection through inhalation or mucosal contact. The defined transmission routes of viral diseases are: transmission through respiratory droplets and the possibility of aerosol transmission in a relatively closed environment with long-term exposure to high-concentration aerosols.

[0006] Inhaled allergens mainly include the excreta and remains of mites, fungi, molds, etc. The statistical particle size distribution is in the range of 2 - 100 μm. The allergens entering from the outside mainly include pollen, and the distribution particle size is in the range of 5 - 100 μm. The cause of allergy is the sensitizing proteins carried by allergens, such as the digestive enzymes carried by mite excreta. Other allergens also include cockroach excreta, pet dander, etc.

[0007] For the removal of suspended microorganisms and allergens in the air, it is actually the capture and removal of fine particles. Whether it is a paper filter or an electrostatic filter, both can capture them well and remove them from the air. However, capture does not mean killing. For example, in a paper filter, the captured virus-containing droplets may keep the virus active for about a week. Especially for the filter material made of polypropylene electrostatic meltblown fibers, due to the hydrophobic characteristics of the material surface, the droplet particles may break away from the captured state as the water evaporates and the droplets shrink, and re-enter the air. And bacteria, molds, and fungi may multiply in large numbers in the accumulation of captured fine particles, forming new pollution sources.

[0008] A large number of studies have shown that microorganisms and the protein components causing allergies can be killed or desensitized in the following ways.

[0009] Ultraviolet irradiation: Deep ultraviolet with a wavelength less than 280 nm can cause the coagulation and denaturation of biological proteins, and the breakage of biological genetic material DNA or RNA, thereby causing the death of microorganisms and the inactivation and desensitization of sensitizing proteins. According to different types of microorganisms, the ultraviolet sterilization time and dose are also different. Different types of bacteria have different absorption peaks for ultraviolet light. For example, the maximum absorption wavelengths of DNA and Escherichia coli are both 265 nm, while the maximum absorption wavelengths of Cryptosporidium and phage are 261 nm and 271 nm respectively. Therefore, the required sterilization time should also be different. When the ultraviolet radiation intensity is 3×10 4 μW / cm 2 , the time required to kill viruses, bacteria, mold spores, and algal bacteria is 0.1 - 1.0 S, 1.0 - 8.0 S, and 5.0 - 40.0 S respectively. Ultraviolet dose plays a crucial role in the sterilization process. Ultraviolet dose can be expressed as the product of ultraviolet intensity and irradiation time. Under the condition of sufficient ultraviolet dose, inactivated virus bacteria will not revive. However, when the dose is insufficient, many virus bacteria inactivated by ultraviolet irradiation can repair their damaged structures with the assistance of light. When the ultraviolet dose is the same, high-intensity, short-time or low-intensity, long-time irradiation methods can be adopted to achieve the sterilization purpose. To kill Helicobacter pylori at a concentration of 1×10 4 per mL, the required ultraviolet dose is about 30 mJ / cm 2 , while to kill the same number of spores, 70 mJ / cm is required.2 Ultraviolet dose around. High-power deep ultraviolet rays can cause aging effects on polymer materials such as plastics and rubbers, resulting in structural damage, limiting the usage scenarios, and corresponding protective treatments are required.

[0010] Hydroxyl radical reaction: The oxidation potential of hydroxyl radicals is 2.8 eV, second only to the F element in nature. It can undergo oxidation reactions with any organic matter, breaking and decomposing the chemical bonds mainly composed of carbon, nitrogen, oxygen, and hydrogen. One way to generate hydroxyl radicals is through photocatalytic reactions. By irradiating with light whose radiation energy level is greater than the bandgap energy level of semiconductor metal oxides, electron transitions occur, and then the water molecules adsorbed on the surface are decomposed into hydroxyl radicals. Titanium dioxide nanomaterials with anatase crystal structure are widely used in photocatalytic reactions due to their good chemical inertness and moderate bandgap. Although the hydroxyl radicals formed by photocatalytic reactions have extremely strong reaction capabilities, their existence time is in the nanosecond range, and the action distance is only a few nanometers, belonging to the typical "contact - mass transfer - reaction" category, that is, they can only react with the organic matter in contact with the surface. The bandgap of anatase titanium dioxide is 3.2 eV, corresponding to an excitation light wave wavelength of 387.5 nm, belonging to the UV - A band. By modifying the photocatalytic material, such as doping nitrogen, transition metals, noble metal elements, the bandgap can be reduced, the excitation wavelength can be red - shifted, and even visible light can be used for excitation. The propagation of light is in a straight line and is easily blocked. In the photocatalytic reaction structure, the problems of effective conduction of the excitation light source and the reduction in efficiency caused by surface shielding of the photocatalyst material need to be solved to maximize the quantum reaction efficiency of hydroxyl radicals.

[0011] Oxygen radical reaction: The oxidation potential is slightly lower than that of hydroxyl radicals, about 2.7 eV, and it can also oxidize various organic matters, playing a role in sterilization and desensitization. Atomic oxygen is generated during the breaking of oxygen molecules by space radiation (ultraviolet radiation, electron bombardment) or the re - reduction of ozone. Like hydroxyl radicals, its existence time and action distance are very small.

[0012] Strong electric field effect: The electro - signal transmission of microbial metabolism is inhibited or even stopped. The blocked microbial metabolism will stop dividing and reproducing until death, thereby achieving the purpose of killing. If in a strong electric field environment, the microbial charging and discharging process occurs, and the generated current will cause the rapid death of the microorganisms.

[0013] Spatial oxides and charged particles such as ozone, free electron radiation, and plasma also have good sterilization and desensitization effects on microorganisms and allergens. However, due to the limitations of reactor efficiency and ozone concentration in the usage environment, their concentrations are extremely low, the spatial contact probability is small, and the cumulative contact energy is not easily reached to the sterilization or desensitization dose, generally playing an auxiliary role.

[0014] During filter use, load characteristics vary depending on the region, environment, and usage habits. Choosing the right filter maintenance schedule is a major challenge. With the exception of high-efficiency filters made from ultrafine glass fiber, which can be assessed online in real time using initial and final resistance tests, there are currently no suitable, convenient online testing methods for other filter types.

[0015] The energy efficiency limit values of air purifiers have been listed as national mandatory standards (GB36893-2018 Air Purifier Energy Efficiency Limit Values and Energy Efficiency Grades), which will officially come into effect in 2019. Low wind resistance, high-efficiency fine particulate matter filters are one of the key factors in meeting the limit value requirements.

[0016] However, currently, there is no module in the existing technology that can efficiently capture particulate matter and quickly kill or desensitize the microorganisms and allergens contained therein in situ. Summary of the Invention

[0017] The purpose of the present invention is to provide a module for capturing, killing and desensitizing fine particulate matter pollution sources, which can capture particulate matter with high energy efficiency and can quickly kill or desensitize the microorganisms and allergens contained therein in situ, and has a real-time utility detection function.

[0018] In order to achieve the above-mentioned objectives, the present invention provides a module for capturing, killing and desensitizing fine particulate matter pollution sources, which includes: a charging component for charging the passing fine particulate matter pollution source; an electrostatic particle collector for capturing the charged fine particulate matter pollution source, the electrostatic particle collector including at least two parallel electrode plates, the surfaces of the electrode plates being coated with a photocatalytic coating, and the electrode plates being a transparent structure; some of the electrode plates are high-voltage electrode plates, and the other part of the electrode plates are low-voltage electrode plates, the high-voltage electrode plates and the low-voltage electrode plates being staggered and spaced apart to form a capture channel with a high-voltage electric field, the charging component being located at the front end of the air inlet of the capture channel; a light-emitting component for emitting light to the electrode plates; and a detection component for detecting the light intensity after the light passes through the electrode plates.

[0019] Furthermore, the electrode plate comprises a coating film, an electrode and a coating film stacked in sequence, the visible light transparency of the electrode plate is greater than 40%, and the square resistance of the electrode is 10E6 to 10E9Ω.

[0020] Furthermore, the coating film of the low-voltage electrode plate is provided with micropores, so that the coating film covers the electrode at a coverage rate of 50% to 99.99%.

[0021] Furthermore, the electrode is one or a combination of more than one of an indium oxide electrode, an antimony-doped tin oxide electrode, a polyaniline electrode or a polythiophene electrode.

[0022] Further, the coating film is one or a combination of more than one of a polycarbonate coating film, a polyethylene terephthalate coating film, an acrylonitrile-styrene copolymer coating film, a nylon coating film, a polypropylene coating film, a high silica borate glass coating film, or a quartz glass coating film.

[0023] Further, the electric field strength between the high-voltage electrode plate and the low-voltage electrode plate > 3 MV / m.

[0024] Further, a resistor is connected to each of the electrode plates, and the resistance value is 10 MΩ to 1000 MΩ.

[0025] Further, the visible light transparency of the photocatalytic coating > 80%; the light absorption cut-off wavelength of the photocatalytic coating is 365 to 400 nm.

[0026] Further, the photocatalytic coating is a nano-titanium dioxide coating, the particle size ≤ 150 nm; the thickness of the photocatalytic coating < 10 μm.

[0027] Further, the charge-carrying component includes at least one discharge needle and an induction electrode corresponding to the discharge needle. The discharge needle is adapted to be connected to the high-voltage end of a high-voltage power supply, and the induction electrode is adapted to be connected to the low-voltage end or the ground end of the high-voltage power supply; the induction electrode is in a ring structure, and at least 1 symmetric induction curve is distributed on the planar surface of the ring structure, and the discharge needle points to the ring center of the induction electrode.

[0028] Further, the distance between the discharge needle and the ring center of the induction electrode is between them, where r is the minimum radius of the ring structure.

[0029] Further, the ratio of the length of the discharge needle to the equivalent diameter > 15, the equivalent diameter < 1 mm, and the tip curvature < 100 μm.

[0030] Further, a resistor is connected to the discharge needle, and the resistance value is 10 MΩ to 1000 MΩ.

[0031] Further, the charge-carrying component includes a substrate, and the substrate is provided with a ring-shaped through hole. At least the edge of the ring-shaped through hole is conductive, and the edge of the ring-shaped through hole constitutes the induction electrode.

[0032] Further, the discharge needle is a silver-plated carbon fiber discharge needle, or the discharge needle includes a carbon fiber and a silver-plated wire, and the carbon fiber and the silver-plated wire are bonded by resin.

[0033] Further, the light-emitting component includes one or more of a deep ultraviolet continuous light-emitting component, an ultraviolet light-emitting diode component, or a gas discharge flash tube component; the deep ultraviolet continuous light-emitting component includes a deep ultraviolet light-emitting diode and a driving circuit connected thereto, or a vacuum gas discharge lamp and a driving circuit connected thereto. The emission wavelength of the deep ultraviolet continuous light-emitting component is 180 - 280 nm, and the surface irradiation power > 0.01 mW / cm 2 ; the ultraviolet light-emitting diode component includes an ultraviolet light-emitting diode and a driving circuit connected thereto. The emission wavelength of the ultraviolet light-emitting diode component is 320 - 400 nm, and the surface irradiation power > 1 mW / cm 2 ; the gas discharge flash tube component includes a flash tube and a driving circuit connected thereto. The emission wavelength composition of the gas discharge flash tube component includes wavelength components of 100 - 400 nm, and the surface irradiation power > 10 mW / cm 2 .

[0034] Further, the detection component includes a photosensitive device and a driving circuit connected thereto. The detection wavelength of the photosensitive device is from visible light to infrared light wavelengths.

[0035] Further, the charge component includes a metal conductive substrate for forming an induction electrode. The metal conductive substrate is connected to the electrostatic particulate matter collector, and the light-emitting component is mounted on the structure of the metal conductive substrate and emits light toward the electrode plate.

[0036] The capture, killing, and desensitization module for fine particulate matter pollution sources provided by the present invention, compared with the prior art, can efficiently capture particulate matter and can quickly kill or desensitize the contained microorganisms and allergens in situ, and has a real-time utility detection function. Moreover, it also has the advantages of low wind resistance, high energy efficiency, long service life, easy maintenance, and reusability. Description of the Drawings

[0037] Figure 1 is a three-dimensional structural schematic diagram of the capture, killing, and desensitization module for fine particulate matter pollution sources of the present invention;

[0038] Figure 2 is an exploded structural schematic diagram of the capture, killing, and desensitization module for fine particulate matter pollution sources of the present invention;

[0039] Figure 3 is a schematic structural diagram of the electrostatic particulate matter collector;

[0040] Figure 4 is a schematic structural diagram of the charge component and the electrostatic particulate matter collector;

[0041] Figure 5It is a schematic diagram of a discharge needle and its power supply structure;

[0042] Figure 6 It is a schematic diagram of the structure of an induction electrode;

[0043] Figure 7 It is a schematic diagram of the structure of a discharge needle;

[0044] Figure 8 It is a simplified schematic diagram of the structures of a light-emitting component, an electrostatic particulate matter collector, and a detection component;

[0045] Figure 9 It is a spectral energy distribution diagram of pulsed xenon lamp light;

[0046] Figure 10 It is a spectral energy distribution diagram of an ultraviolet light-emitting diode;

[0047] Figure 11 It is a wind speed - wind resistance test curve;

[0048] Figure 12 It is a wind speed - efficiency test curve;

[0049] Figure 13 It is a usage time - luminous flux ratio test curve;

[0050] Figure 14 It is an ozone generation amount test curve.

[0051]

Description of the attached drawing reference numerals

[0052] 1 - Electrostatic particulate matter collector, 11 - Electrode plate, 111 - Electrode, 112 - Coating film, 1121 - Micro - pores, 113 - High - voltage electrode plate, 114 - Low - voltage electrode plate, 12 - Photocatalytic coating, 13 - Support structure, 14 - Collection channel;

[0053] 2 - Charging component, 21 - Discharge needle, 211 - Carbon fiber, 212 - Silver - plated wire, 22 - Induction electrode, 221 - Induction curve, 222 - Substrate, 223 - Through - hole,

[0054] 3 - Light - emitting component, 31 - Deep - ultraviolet continuous light - emitting component, 32 - Ultraviolet light - emitting diode component, 33 - Gas - discharge flash tube component;

[0055] 4 - Detection component;

[0056] 5 - High - voltage power supply. Detailed implementation manners

[0057] The following provides a detailed description of the present invention in combination with specific embodiments.

[0058] The present invention provides a module for capturing, killing, and desensitizing fine particulate matter pollution sources, as Figures 1 to 8As shown in the figure, it includes:

[0059] A charged component 2 for charging the passing fine particulate matter pollution source.

[0060] An electrostatic particulate matter collector 1 for collecting the charged fine particulate matter pollution source. The charged component 2 is located at the front end of the air inlet of the collection channel 14. This setting method enables the fine particulate matter pollution source to enter the collection channel 14 after being charged. Of course, if an outer shell is added to this module and the outer shell forms an air guiding flow channel, since the shape of the outer shell can be diverse, the charged component 2 does not necessarily need to be strictly located in front of the electrostatic particulate matter collector 1. As long as the charged component 2 is located at the front end of the electrostatic particulate matter collector 1 in the air flow direction, there is no need to strictly limit the position of the charged component 2.

[0061] The electrostatic particulate matter collector 1 includes at least two mutually parallel electrode plates 11. The surface of the electrode plates 11 is coated with a photocatalytic coating 12, and the electrode plates 11 are transparent structures; some of the electrode plates 11 are high-voltage electrode plates 113, and the other part of the electrode plates 11 are low-voltage electrode plates 114. The high-voltage electrode plates 113 and the low-voltage electrode plates 114 are arranged in an alternating and spaced manner. During subsequent use, the high-voltage electrode plates 113 and the low-voltage electrode plates 114 are connected to a high-voltage power supply 5 through a resistor to form a collection channel 14 with a high-voltage electric field.

[0062] A light-emitting component 3 for emitting light to the electrode plates 11. For this light-emitting component 3, it can be set at multiple positions. For example, at the front end or the rear end of the air inlet of the collection channel 14 of the electrostatic particulate matter collector 1, or on the side as well, as long as it can emit light to the electrode plates 11. Therefore, there is no need to strictly limit the position of the light-emitting component 3.

[0063] A detection component 4 for detecting the light intensity after the light passes through the electrode plates 11. For this detection component 4, it can be set at multiple positions. It can be set on a certain electrode plate 11, or it can be set outside the electrostatic particulate matter collector 1, as long as it can detect the light intensity after the light passes through the electrode plates 11; at the same time, when the detection component 4 is set at different positions, it corresponds to detecting the light intensity after the light passes through one layer or multiple layers of electrode plates 11, and the required data can be obtained through subsequent calculation and conversion. Therefore, there is no need to strictly limit the position of the detection component 4.

[0064] Preferably, an outer shell can also be set, and the above-mentioned charged component 2, electrostatic particulate matter collector 1, light-emitting component 3 and detection component 4 are all installed in the outer shell. The outer shell forms an air guiding flow channel, and the shape of the outer shell can be diverse; of course, it can also be as Figure 1As shown, it is also possible not to set an outer shell. The charged component 2 is directly installed at the front end of the electrostatic particulate matter collector 1, the light-emitting component 3 is installed at the bottom of the charged component 2, and the detection component 4 is installed on the electrostatic particulate matter collector 1, which can also achieve the purpose of the present invention.

[0065] Based on the above components and their cooperation, the working principle of the capture, killing, and desensitization module for fine particulate matter pollution sources provided by the present invention is as follows:

[0066] After the air flow passes through the charged component 2, the charged component 2 charges the fine particulate matter pollution sources in the air flow. Then, the fine particulate matter pollution sources enter the electrostatic particulate matter collector 1, and the high-voltage electric field of the electrostatic particulate matter collector 1 captures the charged fine particulate matter pollution sources. The charged fine particulate matter pollution sources are adsorbed onto the electrode plate 11. Through the action of the ultraviolet rays emitted by the light-emitting component 3 in combination with the photocatalytic coating 12, the microorganisms and allergens contained in the fine particulate matter pollution sources are efficiently killed and desensitized. Since the electrode plate 11 is a transparent structure, ultraviolet rays with wavelengths greater than the cut-off wavelength of the photocatalytic coating can enter the electrode plate 11 and partially pass through. Under the synergistic action of optical transmission, reflection, and light guiding, the microorganisms and allergens contained in all the fine particulate matter pollution sources captured on the electrode plate 11 are killed and desensitized, greatly reducing the existence of optical dead angles. At the same time, a detection component 4 is provided. By real-time detecting the light intensity after the light passes through the electrode plate 11 and comparing it with the initial light intensity, the capture situation can be understood and a reminder for cleaning and maintenance can be given. This kind of module can be applied to devices such as high-efficiency indoor air purifiers, fresh air ventilation, fan coils, and wearable respirators.

[0067] In summary, the capture, killing, and desensitization module for fine particulate matter pollution sources can efficiently capture particulate matter and can quickly kill or desensitize the contained microorganisms and allergens in situ. It has a real-time utility detection function, and also has the advantages of low air resistance, high energy efficiency, long service life, easy maintenance, and reusable.

[0068] Hereinafter, each component will be described in detail.

[0069] Electrostatic particulate trap 1

[0070] In this embodiment, the electrostatic particulate matter collector 1 includes at least two electrode plates 11, and a capture channel 14 is formed by the electrode plates 11.

[0071] The electrode plate 11 includes a coating film 112, an electrode 111, and a coating film 112 stacked in sequence. The visible light transparency of the electrode plate 11 is > 40%, and the sheet resistance of the electrode 111 is 10E6 - 10E9 Ω. The high-voltage electrode plate 113 is used to connect to the high-voltage terminal of the high-voltage power supply 5, and the low-voltage electrode plate 114 is used to connect to the low-voltage terminal of the high-voltage power supply 5 or to ground. The high-voltage electrode plate 113 and the low-voltage electrode plate 114 are arranged alternately and spaced apart, and a support structure 13 is arranged at the interval, thus forming a trapping channel 14 through which the air flow passes.

[0072] In this embodiment, to avoid the surface polarization effect that easily occurs in the double-layer coating film 112 and reduces the electric field strength between the electrodes, the coating film 112 of the low-voltage electrode plate 114 is provided with micropores 1121, so that the coating coverage rate of the coating film 112 on the electrode 111 is 50% - 99.99%. The micropores form microelectrodes in the covering layer, causing an asymmetric gradient change in the electric field distribution inside the parallel plates, which can improve the trapping efficiency of fine particulate matter. At the same time, the microelectrodes can induce the discharge of charged microorganisms and generate current to kill microorganisms.

[0073] In this embodiment, the electrode 111 is one or a combination of indium oxide electrodes, antimony-doped tin oxide electrodes, polyaniline electrodes, or polythiophene electrodes. To meet the requirement of visible light transparency, the above materials are used to coat and make the transparent electrode 111, and the sheet resistance of the electrode 111 is 10E6 - 10E9 Ω. Of course, there are other similar materials that can achieve the above purpose, and the present invention does not list them exhaustively. Similar substitutions also fall within the protection scope of the present invention.

[0074] In this embodiment, the coating film 112 is one or a combination of polycarbonate coating films, polyethylene terephthalate coating films, acrylonitrile-styrene copolymer coating films, nylon coating films, polypropylene coating films, high-silica borosilicate glass coating films, or quartz glass coating films. To meet the requirement of visible light transparency, the above materials are used to make the transparent coating film 112. Of course, there are other similar materials that can achieve the above purpose, and the present invention does not list them exhaustively. Similar substitutions also fall within the protection scope of the present invention.

[0075] In this embodiment, the electric field strength between the high-voltage electrode plate 113 and the low-voltage electrode plate 114 is > 3 MV / m. The continuous electric field strength greater than 3 MV / m can effectively shorten the Coulomb force deflection trapping distance of charged particulate matter, inhibit the microbial activity, and inhibit the conduction of the microbial metabolism electrical signal to kill microorganisms.

[0076] In this embodiment, to avoid the current concentration effect and oscillating discharge effect caused by the electric weak point sparking, each electrode plate 11 is connected with a resistor, and then connected to the high-voltage power supply through the resistor. The resistance value is 10 MΩ - 1000 MΩ.

[0077] In this embodiment, the visible light transparency of the photocatalytic coating 12 > 80%; the light absorption cut-off wavelength of the photocatalytic coating 12 is 365 - 400 nm. The main functions of the photocatalytic coating 12 are as follows: under the action of ultraviolet light, the water molecules adsorbed on the outer surface decompose to generate hydroxyl radicals, killing the microorganisms adsorbed on the surface and desensitizing allergen proteins; at the same time, under the action of the cut-off wavelength, the photocatalytic coating 12 prevents ultraviolet light shorter than the UV-B band from entering the coating film layer and the electrode layer, preventing the coating film layer and the electrode layer from aging due to ultraviolet radiation.

[0078] In this embodiment, the main component of the photocatalytic coating 12 is nano-titanium dioxide, with a particle size ≤ 150 nm. Further preferably, the particle size is 5 - 50 nm; the thickness of the photocatalytic coating 12 < 10 μm. Of course, there are other similar materials that can achieve the above purposes. The present invention does not list them exhaustively, and similar substitutions also fall within the protection scope of the present invention.

[0079] Charging component 2

[0080] In this embodiment, the charged component 2 is preferably a glow discharge plasma charged component, which includes at least one discharge needle 21 and an induction electrode 22 corresponding to the discharge needle 21. The discharge needle 21 is adapted to be connected to the high-voltage end of a high-voltage power supply, and the induction electrode 22 is adapted to be connected to the low-voltage end or the ground end of the high-voltage power supply; the induction electrode 22 is in a ring structure, and at least 1 symmetric induction curve 221 (when it is 1, the induction curve is circular) is distributed on the planar surface of the ring structure. The discharge needle 21 points to the center of the ring of the induction electrode 22. The ratio of the length of the discharge needle 21 to the equivalent diameter > 15, the equivalent diameter < 1 mm, and the tip curvature < 100 μm. A resistor is connected to the discharge needle 21, with a resistance value of 10 MΩ - 1000 MΩ, and the tip discharge current of the discharge needle 21 is 0.5 μA - 5 μA.

[0081] In this embodiment, the distance between the discharge needle 21 and the center of the ring of the induction electrode 22 is between them, where r is the minimum radius of the ring structure. The above is the glow discharge plasma generation structure form with high charge efficiency and minimum ozone generation.

[0082] The induction curve 221 is conducive to the occurrence of glow discharge. The setting of the distance from the tip to the central plane is conducive to generating the best charging effect under the minimum applied voltage. The addition of the power supply series resistor can avoid streamer or arc discharge and ozone generation caused by excessive discharge current. At the same time, when multiple discharge needles 21 are powered by the same power supply, the current can be effectively balanced, ensuring the consistency of the charging efficiency and avoiding the overall performance degradation caused by local failure.

[0083] In this embodiment, the charged component 2 includes a substrate 222. The substrate 222 is provided with an annular through-hole 223, and at least the edge of the annular through-hole 223 is conductive. The edge of the annular through-hole 223 constitutes the induction electrode 22. Based on the above structure, a single substrate 222 can be used, and an annular through-hole 223 can be punched on the substrate 222, and the edge of the annular through-hole 223 is made conductive, and the discharge needles 21 corresponding to the number of annular through-holes 223 are configured, so that multiple groups of glow discharge plasma charging units can be formed, which is convenient for production and has low production costs. Preferably, the ventilation area after punching is not less than 90% of the total area of the whole substrate 222 before punching to reduce wind resistance.

[0084] The induction electrode 22 can be a conductive ring, or can be obtained by punching the substrate 222 as shown in Figure 6 . The material of the substrate 222 can be an aluminum plate / stainless steel plate / plastic-coated steel plate / plastic plate with surface conductivity / insulating plate with a conductive coating printed on the inner ring edge, etc., to meet the needs of different application scenarios. Similar replacements all fall within the protection scope of the present invention.

[0085] In this embodiment, the discharge needle 21 is a silver-plated carbon fiber discharge needle, or the discharge needle 21 includes a carbon fiber 211 and a silver-plated wire 212, and the carbon fiber 211 and the silver-plated wire 212 are bonded by resin. The discharge needle 21 with the above structure can avoid the safety regulations problems of the metal discharge needle 21 and the generation of crystalline substances adhering to the tip surface during use. As shown in Figure 7 , it is a hybrid structure of the carbon fiber 211 and the silver-plated wire 212. After being bonded and cured by resin, it is made into a filament with a diameter of 0.3 - 1.0 mm, having a certain flexibility and stiffness. One end is obliquely cut to form a sharp angle, and the other end is connected to a resistor and then connected to a power supply. The carbon fiber 211 has excellent chemical inertness and can withstand electron bombardment and electrochemical corrosion during the discharge process. The metal silver can enhance the conductivity, and the peeling effect generated during the discharge process can remove the solid particulate matter easily attached to the tip surface and maintain the curvature stability of the discharge tip. The peeled silver ions are trapped by the rear particulate matter trapping electrode plate 11, and can kill viruses, bacteria and other microorganisms in contact. The discharge needle 21 with the above structure is flexible, not easy to cause stabbing and scratching, and is conducive to cleaning and maintenance and meets the requirements of household appliance safety regulations design.

[0086] Light-emitting component 3

[0087] In this embodiment, the light-emitting component 3 includes one or more of a deep ultraviolet continuous light-emitting component 31, an ultraviolet light-emitting diode component 32, or a gas discharge flash tube component 33. The light-emitting component 3 is used for irradiation sterilization and desensitization; exciting titanium dioxide to generate free radicals; penetrating and strongly sterilizing and desensitizing, and exciting the hydrophilicity of the photocatalytic material. The spectral energy distribution is as shown in Figure 9 and Figure 10 .

[0088] The deep ultraviolet continuous light-emitting component 31 includes a deep ultraviolet light-emitting diode and a driving circuit connected thereto, or a vacuum gas discharge lamp and a driving circuit connected thereto. The emission wavelength of the deep ultraviolet continuous light-emitting component 31 is 180 - 280 nm, and the surface irradiation power > 0.01 mW / cm 2 . Preferably, when selecting the deep ultraviolet light-emitting diode, the wavelength is 240 - 280 nm. The deep ultraviolet continuous light-emitting component 31 continuously irradiates the flowing air to kill sensitive viruses.

[0089] The continuous service life of the deep ultraviolet light-emitting diode can reach more than 30,000 hours, which can meet the design requirements of continuous use for 5 years.

[0090] The ultraviolet light-emitting diode component 32 includes an ultraviolet light-emitting diode and a driving circuit connected thereto. The emission wavelength of the ultraviolet light-emitting diode component 32 is 320 - 400 nm, and the surface irradiation power > 1 mW / cm 2 . Preferably, the emission wavelength of the ultraviolet light-emitting diode is 365 - 400 nm (NUV band). The ultraviolet light-emitting diode in the NUV band can continuously radiate high-power A-band ultraviolet light with high quantum conversion efficiency. Through the conduction of space radiation, reflection, transparent electrodes, and transparent coating films, it irradiates the coated photocatalytic material without dead angles, stimulates the generation of hydroxyl radicals, kills the microorganisms adsorbed on the surface, and decomposes and desensitizes allergenic protein bodies. The ultraviolet light-emitting diode can also work in pulse mode. Within the limited range of the maximum allowable current and duration, pulse driving is adopted, and the luminous power can be increased by 2 - 4 times. Although the overall irradiation energy increases limitedly, the increase in light intensity can improve the penetration and reflection capabilities and enhance the quantum reaction efficiency of the photocatalytic material.

[0091] The continuous service life of the ultraviolet light-emitting diode can reach more than 30,000 hours, which can meet the design requirements of continuous use for 5 years.

[0092] The gas discharge flash tube component 33 includes a flash tube and a driving circuit connected thereto. The emission wavelength composition of the gas discharge flash tube component 33 includes wavelength components of 100 - 400 nm, and the surface irradiation power > 10 mW / cm 2。The flash tube can generate intense light in the range of vacuum ultraviolet to deep ultraviolet with wavelengths from 100 to 280 nm during the flash process by adjusting parameters such as vacuum degree, filling inert gas composition, bulb material, discharge current, etc., and the instantaneous optical power can reach several hundred watts to dozens of kilowatts. The light energy level with a wavelength less than 242 nm can excite oxygen molecules to break and generate oxygen free radicals, which then form ozone. At the same time, when ultraviolet light with a wavelength in the range of 220 nm to 320 nm irradiates ozone, ozone can be reduced to oxygen. Oxygen free radicals and ozone have direct characteristics of killing microorganisms, and the ozone concentration in the space can be controlled to be less than the limit value by adjusting the flash intensity and frequency. The part with a wavelength less than 280 nm (UV-C) can quickly kill microorganisms and desensitize allergens. Ultraviolet light with a wavelength less than 400 nm (UV-A / B), due to its penetration performance generated by strong irradiation intensity, can stimulate photocatalytic materials to generate hydroxyl free radicals, kill microorganisms adsorbed on the surface and desensitize allergens. At the same time, the photocatalytic materials coated on the electrode plate 11 and the captured fine particulate matter pollution sources can be irradiated from multiple directions, which is beneficial to the synergistic effect of UV-C band ultraviolet light and photocatalytic materials to kill microorganisms.

[0093] Another benefit of using the flash tube is that when this module is applied to hospital nosocomial infection prevention and control and home patient care, when the module needs to be taken out for cleaning and maintenance, the flash tube can be set to flash continuously, and the high-power ultraviolet light and radiant heat generated by it can be used to completely kill the captured microorganisms, and then processed to protect the operator from secondary infection.

[0094] The service life of the flash tube is generally more than 100,000 times. Through appropriate drive circuit design, it can reach more than 1 million times, which can meet the service life requirements of 3 years for medical applications and 5 years for civilian applications.

[0095] Based on the above settings, the three kinds of light-emitting components 3 can be combined and applied in different application places: for example, in general household occasions, the deep ultraviolet continuous light-emitting component 31 can be used continuously, the ultraviolet light-emitting diode component 32 can be used continuously or intermittently, and the gas discharge flash tube component 33 can be used regularly or before cleaning; in crowded places such as offices, the deep ultraviolet continuous light-emitting component 31 and the ultraviolet light-emitting diode component 32 can be used continuously, and the gas discharge flash tube component 33 can be used regularly every day for strengthening treatment; in medical places, the deep ultraviolet continuous light-emitting component 31 and the ultraviolet light-emitting diode component 32 can be used continuously, and at the same time the gas discharge flash tube component 33 can be used intermittently to assist in killing microorganisms. Especially before cleaning and maintenance, the gas discharge flash tube component 33 can be used intensively to completely kill the captured microorganisms and avoid secondary transmission and protect the safety of operators.

[0096] Preferably, the charged component 2 includes a metal conductive substrate 222 for forming the induction electrode 22. The metal conductive substrate 222 is connected to the electrostatic particulate collector 1, and the light-emitting component 3 is installed at the bottom of the metal conductive substrate 222 and emits light toward the electrode plate 11. When the light-emitting component 3 is installed at the bottom of the metal conductive substrate 222, the metal conductive substrate 222 can help the light-emitting component 3 dissipate heat.

[0097] Detection component 4

[0098] In this embodiment, the detection component 4 includes a photosensitive device and a driving circuit connected thereto. The detection wavelength of the photosensitive device is from visible light to infrared light wavelength. The photosensitive device is placed behind one or more electrode plates 11 for detecting the intensity of the light transmitted through the electrode plate 11.

[0099] In the initial stage, the electrode plate 11 has no particulate matter captured on it, and the photosensitive device will detect an initial transmitted light intensity. As the usage time increases, the captured particulate matter covers the surface of the electrode plate 11, resulting in attenuation of the transmitted light intensity. By comparing with the initial light intensity, corresponding prompts are set, and finally it is prompted that the capture filter needs to be cleaned and maintained.

[0100] It is also possible to adjust the driving circuit of the light-emitting component 3 by statistically analyzing the data detected by the photosensitive device, adjust the light-emitting intensity, and optimize the working state of the module. Using the photosensitive device for detection has a direct effect, is simple and reliable, and is beneficial to the effective and reasonable use of the module.

[0101] Manufacturing method and test results

[0102] Antimony-doped tin oxide powder materials with a particle size of 20 - 50 nm are ground and dispersed in n-butanol to make a dispersion with a concentration of about 20%. Appropriate alcohol-soluble resin and additives are added to make a coating containing conductive particle components. Using the scraping method, it is coated on a transparent polycarbonate film with a width of 50 mm and a thickness of 100 - 150 μm to make a conductive layer (i.e., electrode) with a thickness of 5 μm, a sheet resistance of 10E7Ω, and a width of 40 mm centered. An adhesive is coated on the coating and a transparent polycarbonate film with the same thickness is laminated. The light transmittance of the laminated film - electrode - laminated film structure is > 70%. A high-voltage electrode plate with a length of 250 mm and a width of 50 mm is made.

[0103] A low-voltage electrode plate is manufactured using the same process as the high-voltage electrode plate. The difference is that: on the laminated film of the low-voltage electrode plate, micropores with a diameter of 0.2 mm and a spacing of 1 mm are distributed. After making the conductive layer (i.e., electrode) on the laminated film respectively, the laminated film - electrode - electrode - laminated film is laminated, and the obtained structure has a light transmittance of > 50%. A low-voltage electrode plate with a length of 250 mm and a width of 50 mm is made.

[0104] By means of hydrolysis of titanate, a sol containing nano-titanium dioxide particles is prepared. A silane coupling agent and an organosilicon resin are added to make a coating with a titanium dioxide solid content of about 1%. The coating is applied to the surface of the electrode plate by dip coating to form a photocatalytic coating.

[0105] An insulating polymer material is used to support and separate the high-voltage electrode plate and the low-voltage electrode plate at equal intervals in an alternating manner. The support structures are evenly distributed, with a height of 3 mm and a ratio of thickness to spacing of about 1:50 - 200, forming a trapping channel.

[0106] Finished carbon fibers with a diameter of 7 μm are used. The surface is chemically silver-plated by known and publicly known techniques, with a silver-plating thickness of 0.3 - 1 μm. About 500 strands of silver-plated carbon fibers are arranged side by side into one strand, and are bonded and cured with epoxy resin into a filament shape. The filament is cut at a horizontal angle of 30 degrees to form a sharp tip, and a discharge needle with a diameter of 0.6 mm and a length of 12 mm is made. The discharge needles are fixed on a strip-shaped electrode plate with a printed resistor on the surface at the designed spacing, forming the emission end of the glow discharge plasma charging component.

[0107] The induction electrode is made by cutting a metal plate. Four arc-shaped induction electrodes are distributed on each closed surface, with a surface diameter of 45 mm, forming the induction end of the glow discharge plasma charging component.

[0108] The distance from the tip part of the emission end to the center of the induction electrode plane is 17 mm.

[0109] The deep ultraviolet light-emitting source uses a light-emitting diode with a wavelength of 260 - 280 nm and a power of 1 W. The ultraviolet light-emitting source uses a light-emitting diode with a wavelength of 380 nm and a power of 3 W. The flash ultraviolet light-emitting source uses a flash tube with a diameter of 3 mm and a light-emitting length of 50 mm. The three light sources are arranged according to the design and fixed on the metal plate forming the induction end of the glow discharge plasma charging component.

[0110] The photosensitive device uses a silicon photocell light intensity sensor and is fixed on the side wall of the electrostatic particle trap.

[0111] The emission end of the glow discharge plasma charging component is adhesively fixed on the surface of the electrostatic particle trap. One end of the electrode lead-out wire is connected in parallel to a high-voltage power supply. The induction electrode equipped with the light-emitting component is sequentially combined with the electrostatic particle trap through a frame bracket.

[0112] Based on the above structure, a module with an air inlet surface length of 250 mm and a height of 170 mm is made. Of course, the above is only an example, and during actual manufacturing, material or process changes can be made based on the principle of the present invention. The components and the outer shell enclosure structure in the module adopt processes such as bonding and potting to meet the requirements of the IP68 protection level. The power supply, control signal input, and acquisition of the module adopt an elastic contact method. Preferably, a magnetic attraction contact is used for power feeding.

[0113] Connect the electrostatic particulate trap to a 15 kV DC high-voltage power supply, connect the glow discharge plasma charging component to a 10 kV adjustable constant-current DC power supply, and adjust the current of a single discharge needle to 1.5 μA.

[0114] Install an insulating outer enclosure structure for this module, place it in a test wind tunnel specified in the standard GB / T 34012 "Air Purification Devices for Ventilation Systems", adjust and set the surface wind speed, and use sodium chloride particles to test the purification efficiency of 0.3 μm particles, and use natural dust to test the purification efficiency of PM2.5 and PM10. The test results are shown in Figure 11 and Figure 12 .

[0115] Place this module in a well-ventilated indoor area where the ambient particulate matter concentration is 30 - 150 μg / m 3 , continuously turn on the machine for testing, record the detection value of the photosensitive component once a week, and compare it with the initial value. The test results are shown in Figure 13 . The data shows that as the dust collection amount increases, the intensity of light passing through the transparent dust collector is attenuated, and the appropriate cleaning and maintenance time can be confirmed through comparison.

[0116] Place this module in a housing with a DC fan, adjust the fan flow rate to 230 cubic meters per hour, and the input power is about 12 W. According to GB / T 18801:2015 "Air Purifiers" and GB 4076.45 "Safety of Household and Similar Electrical Appliances: Particular Requirements for Air Purifiers", conduct tests in a 30 cubic meter test chamber.

[0117] 1. Particulate matter purification energy efficiency ratio: Turn off the LED and the flash tube

[0118] The measured CADR value is 220 cmh, and the calculated energy efficiency ratio is 18.3, exceeding the highest level (>13) specified in the standard GB 36893-2018 "Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Air Purifiers", meeting the high energy efficiency requirements.

[0119] 2. Ozone generation amount: The LED is always on, and the working frequency of the flash tube is 0.1 Hz

[0120] As Figure 14 shown, continuously test for 24 hours, and the peak ozone concentration is less than 24 ppb, meeting the safety requirements of GB 4076.45 "Safety of Household and Similar Electrical Appliances: Particular Requirements for Air Purifiers".

[0121] Based on the above structural settings and combined with the test results, for the capture, killing, and desensitization module of the fine particulate matter pollution source of the present invention, by reasonably combining each component, the following methods of killing and desensitizing microorganisms and allergens are achieved:

[0122] 1. The high-voltage electric field between the capture electrode plates suppresses the microbial metabolism conduction signal and the microbial self-discharge effect.

[0123] 2. Continuous irradiation with a UV-C deep ultraviolet light source.

[0124] 3. The direct, conductive, and reflective irradiation of a UV-A ultraviolet light source stimulates the hydroxyl radical reaction generated by the photocatalytic material.

[0125] 4. The instantaneous strong light source emitted by the flash tube light source:

[0126] a) Trace amounts of atomic oxygen and ozone generated in the vacuum ultraviolet band;

[0127] b) The direct and reflective irradiation in the UV-C band;

[0128] c) The direct, conductive, and reflective irradiation in the UV-A band;

[0129] d) The instantaneous heating effect in the visible to infrared band.

[0130] 5. The combined use of ultraviolet light of different wavelengths can effectively inhibit the microbial photorepair process and improve the killing efficiency.

[0131] 6. The plasma and negative oxygen ions generated by the glow discharge of the plasma tip, and the silver ions formed by the sputtering of silver atoms generated by the discharge needle bombarded by electrons.

[0132] The beneficial combination of the above components and functions constitutes the high-energy efficiency fine particulate matter pollution source capture, killing, and desensitization module of the present invention, which can be used for the capture, killing, and desensitization purification of fine particulate matter, suspended microorganisms, and allergens in the air. It is applied to indoor air purification, ventilation devices, and wearable breathing devices. At the same time, based on the photocatalytic effect and the light intensity in the flash ultraviolet band, it also has a good purification and removal effect on formaldehyde, gaseous organic pollutants (VOCs), odors, etc.

[0133] In the case of no conflict, the above embodiments and the features in the embodiments can be combined with each other.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A capturing, killing and desensitizing module for fine particulate matter pollution sources, characterized in that, Comprising: A charged component for charging passing fine particulate matter pollution sources; An electrostatic particulate collector for collecting charged fine particulate matter pollution sources. The electrostatic particulate collector includes at least two mutually parallel electrode plates. The surfaces of the electrode plates are coated with a photocatalytic coating, and the electrode plates are of a transparent structure. Some of the electrode plates are high-voltage electrode plates, and some of the other electrode plates are low-voltage electrode plates. The high-voltage electrode plates and the low-voltage electrode plates are arranged alternately and spaced apart to form a trapping channel with a high-voltage electric field. The charged component is located at the front end of the air inlet of the trapping channel; A light-emitting component for emitting light to the electrode plates; A detection component for detecting the light intensity after light passes through the electrode plates; The electrode plates include a coating film, an electrode, and a coating film stacked in sequence. The visible light transparency of the electrode plates > 40%, and the sheet resistance of the electrodes is 10E6~10E9Ω; Micropores with a diameter of 0.2mm and a spacing of 1mm are distributed on the coating film of the low-voltage electrode plate, so that the coating coverage rate of the coating film on the electrode is 50%~99.99%; The charged component includes at least one discharge needle and an induction electrode corresponding to the discharge needle. The discharge needle is adapted to be connected to the high-voltage end of a high-voltage power supply, and the induction electrode is adapted to be connected to the low-voltage end or the ground end of the high-voltage power supply; The induction electrode is of an annular structure, and at least 1 symmetric induction curve is distributed on the plane surface of the annular structure. The discharge needle points to the annular center of the induction electrode; The distance between the discharge needle and the annular center of the induction electrode is between, where r is the minimum radius of the annular structure; the ratio of the length of the discharge needle to the equivalent diameter > 15, the equivalent diameter < 1 mm, and the tip curvature < 100 μm; the discharge needle is connected with a resistor, and the resistance value is 10 MΩ to 1000 MΩ.

2. The module according to claim 1, wherein: The electrode is one or more of an indium oxide electrode, an antimony-doped tin oxide electrode, a polyaniline electrode, or a polythiophene electrode.

3. The module according to claim 1, wherein: The coating film is one or more of a polycarbonate coating film, a polyethylene terephthalate coating film, an acrylonitrile-styrene copolymer coating film, a nylon coating film, a polypropylene coating film, a high-silicon boron glass coating film, or a quartz glass coating film.

4. The module according to claim 1, wherein: The electric field strength between the high-voltage electrode plate and the low-voltage electrode plate > 3MV / m.

5. The module according to claim 1, wherein: Resistors are connected to the electrode plates, and the resistance value is 10MΩ~1000MΩ.

6. The module according to claim 1, wherein: The visible light transparency of the photocatalytic coating > 80%; The light absorption cut-off wavelength of the photocatalytic coating is 365~400nm; The photocatalytic coating is a nano-titanium dioxide coating with a particle size ≤ 15nm; The thickness of the photocatalytic coating < 10μm.

7. The module according to claim 1, wherein: The charged component includes a substrate. The substrate is provided with an annular through-hole, and at least the edge of the annular through-hole is conductive. The edge of the annular through-hole constitutes the induction electrode.

8. The module according to claim 1, wherein: The discharge needle is a silver-plated carbon fiber discharge needle, or The discharge needle includes a carbon fiber and a silver-plated wire, and the carbon fiber and the silver-plated wire are bonded by resin.

9. The module according to claim 1, wherein: The light-emitting component includes one or more of a deep ultraviolet continuous light-emitting component, an ultraviolet light-emitting diode component, or a gas discharge flash tube component; The deep ultraviolet continuous light-emitting component includes a deep ultraviolet light-emitting diode and a driving circuit connected thereto, or a vacuum gas discharge lamp and a driving circuit connected thereto. The light-emitting wavelength of the deep ultraviolet continuous light-emitting component is 180-280 nm, and the surface irradiation power > 0.01 mW / cm 2 ; The ultraviolet light-emitting diode component includes an ultraviolet light-emitting diode and a driving circuit connected thereto. The light-emitting wavelength of the ultraviolet light-emitting diode component is 320-400 nm, and the surface irradiation power > 1 mW / cm 2 ; The gas discharge flash tube assembly includes a flash tube and a drive circuit connected thereto. The emission wavelength composition of the gas discharge flash tube assembly includes wavelength components in the range of 100 to 400 nm, and the surface irradiation power > 10 mW / cm 2 .

10. The module according to claim 1, wherein: The detection component includes a photosensitive device and a driving circuit connected thereto, and the detection wavelength of the photosensitive device is from visible light to infrared light wavelength.

11. The module according to claim 1, wherein: The charged component includes a metal conductive substrate for forming an induction electrode, the metal conductive substrate is connected to the electrostatic particulate matter collector, and the light-emitting component is mounted on the structure of the metal conductive substrate and emits light toward the electrode plate.

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