WO2018066622A1 - 放電処理装置及びその放電処理ユニット - Google Patents

放電処理装置及びその放電処理ユニット Download PDF

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Publication number
WO2018066622A1
WO2018066622A1 PCT/JP2017/036201 JP2017036201W WO2018066622A1 WO 2018066622 A1 WO2018066622 A1 WO 2018066622A1 JP 2017036201 W JP2017036201 W JP 2017036201W WO 2018066622 A1 WO2018066622 A1 WO 2018066622A1
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Prior art keywords
electrode
discharge
water
air
discharge treatment
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Application number
PCT/JP2017/036201
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English (en)
French (fr)
Japanese (ja)
Inventor
英雄 秋本
野口　幸廣
Original Assignee
株式会社エーシーイー
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Priority to KR1020197013151A priority Critical patent/KR102369541B1/ko
Priority to CN201780062167.2A priority patent/CN109803690A/zh
Publication of WO2018066622A1 publication Critical patent/WO2018066622A1/ja

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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
    • A61L9/22—Ionisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/003—Ventilation in combination with air cleaning
    • 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
    • A61L9/145—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes air-liquid contact processes, e.g. scrubbing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
    • 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
    • A61L2209/10—Apparatus features
    • A61L2209/14—Filtering means
    • 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
    • A61L2209/10—Apparatus features
    • A61L2209/16—Connections to a HVAC unit
    • 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
    • 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
    • A61L2209/213—Use of electrochemically treated water, e.g. electrolysed water or water treated by electrical discharge

Definitions

  • the present invention relates to a discharge treatment apparatus suitable for inactivating and / or deodorizing bacteria and viruses floating in the air, PM2.5 measures, tobacco smoke measures, and a discharge treatment unit thereof.
  • Patent Document 1 proposes a sterilization apparatus that atomizes a sterilizing liquid containing hypochlorous acid and sprays it in an indoor space.
  • Patent Document 2 proposes a chlorine dioxide gas generating agent in which a chemical agent for generating chlorine dioxide gas is stored in a film made of a specific material.
  • Patent Document 3 proposes a device in which a plurality of discharge electrodes are arranged along an air flow path through which air flows. This device generates ions in the air flow path by applying a high voltage to the discharge electrodes, and inactivates airborne bacteria and airborne viruses with these ions.
  • Patent Document 4 proposes a discharge treatment apparatus incorporating an electrolyzed water generating means and an air sterilizing means.
  • the electrolyzed water generating means electrolyzes water to generate electrolyzed water, and the electrolyzed water contains active oxygen species.
  • the air sterilization means receives electrolyzed water from the electrolyzed water generating means, and inactivates airborne bacteria and airborne viruses by bringing the electrolyzed water containing active oxygen species into contact with air.
  • Patent Document 5 proposes to inactivate airborne bacteria and airborne viruses by releasing reactive oxygen species such as hydroxyl radicals (OH radicals) into the indoor space.
  • the apparatus of Patent Document 5 has a discharge chamber in the vicinity of the discharge port and a water vapor generation chamber disposed upstream thereof, and supplies water to the discharge chamber after heating the water vapor generated in the water vapor generation chamber.
  • corona discharge is performed between the discharge electrode and the counter electrode positioned along the wall surface defining the discharge chamber.
  • This discharge chamber is kept at a higher water vapor pressure than the outside air, and by generating corona discharge in this state, active oxygen species such as oxygen radicals and OH radicals are generated while suppressing the generation of ozone and NOx. This active oxygen species is released into the space through the outlet.
  • PMPM2.5 air purifier has a problem that the filter for filtering PM2.5 is immediately clogged. Moreover, the air cleaner which filters tobacco smoke with a filter has a problem that the filter becomes a source of bad odor because tar adheres to the filter.
  • Hypochlorous acid has a relatively low concentration (chlorine concentration of 10 ppm to 30 ppm) and the Food Hygiene Law stipulates that it should be used for food sterilization. However, since the toxicity of hypochlorous acid is not currently known, the Food Sanitation Law states that it must be removed before final food is finished.
  • chlorine dioxide has a chlorine odor, it is most typically used at present for the purpose of spatial sterilization.
  • the mass of chlorine dioxide gas is 67.45 g / mol, which is heavier than the mass of air (28.966 g / mol).
  • the chlorine dioxide gas sprayed in the indoor space is likely to stay in the lower region of the indoor space without diffusing.
  • chlorine dioxide has no selectivity for sterilization, it may act not only on bacteria and viruses but also on surrounding animals and plants. In a space where air is not flowing, chlorine dioxide gas stays in the vicinity of the floor, so that the sterilizing effect at a high level where humans breathe may be dilute. Bacteria and virus remnants inactivated by chlorine dioxide gas drift in the air. Further, sterilization depending on chemicals such as hypochlorous acid and chlorine dioxide may promote the emergence of drug-resistant bacteria and drug-resistant viruses.
  • Patent Document 5 proposes that a plasma state is generated by discharging under a relatively high water vapor pressure to generate OH radicals and oxygen radicals, which are then released into the indoor space. And patent document 5 is explaining in detail the mechanism which produces
  • An object of the present invention is to provide a discharge treatment apparatus and its discharge treatment unit that can stably generate hydroxyl radicals (OH radicals) with a simple configuration.
  • the above technical problem is basically according to the present invention, An air flow path having an inlet for sucking air to be treated, and an outlet for discharging the air introduced through the inlet after being treated; A fan part that forcibly sucks air from the inlet and discharges it through the outlet; Including a corona discharge treatment section provided in the air flow path,
  • the corona discharge treatment unit includes a discharge electrode that generates a corona discharge by receiving a high voltage supply, and a member that includes water that is disposed below the discharge electrode at an interval to form a counter electrode. This is achieved by providing a discharge treatment apparatus characterized in that OH radicals are generated in the corona discharge treatment section by generating corona discharge with the discharge electrode.
  • the high voltage applied to the discharge electrode is a direct current. A high voltage is applied continuously or in pulses to the discharge electrode.
  • the member containing water may be composed of an air passage layer that allows air to pass therethrough and can contain water, such as a non-woven fabric having a capillary phenomenon, but is typically a water tank.
  • a heater may be installed in the water tank in order to promote appropriate evaporation of water in cold regions and severe winters. The water in the water tank becomes a stable water source against OH radical generation by corona discharge.
  • ⁇ ⁇ ⁇ Ozone and OH radicals generated by corona discharge decompose gas components and particulate components contained in the air to be treated, typically tobacco smoke and PM2.5 (microparticulate matter).
  • airborne bacteria and viruses When airborne bacteria and viruses are contained in the air, the airborne bacteria and viruses can be inactivated by ozone and OH radicals.
  • the water in the aquarium functions as a filter (“filter by water”), as will be described in detail later, and captures particulate components and gas components in the air to be treated, airborne bacteria, viruses, airborne bacteria, and dead bodies of viruses.
  • Coulomb force acts on particles charged by corona discharge. An ion wind is generated due to the Coulomb force. The ionic wind contributes to effectively enhancing the “filter by water” function.
  • ozone and OH radicals generated by corona discharge ride on an ionic wind and a part thereof is pushed into the water tank.
  • gas components in the air, particle components, airborne bacteria, viruses, airborne bacteria and virus dead bodies are decomposed
  • airborne bacteria and viruses are inactivated in the water in the aquarium.
  • FIG. 1 is a functional block diagram of a discharge treatment apparatus (sanitizer) according to an embodiment.
  • FIG. 2 is a diagram for explaining a configuration of a corona discharge processing unit included in the embodiment.
  • FIG. 3 is a diagram for explaining a “filter with water” function that can be realized by the corona discharge processing unit illustrated in FIG. 2.
  • FIG. 4 is a diagram for explaining a specific example in which the corona discharge treatment unit has a plurality of discharge electrodes, and these discharge electrodes are arranged in a staggered manner.
  • FIG. 5 is a diagram for explaining a preferred structure around the discharge electrode.
  • FIG. 6 is a diagram for explaining the flow of the air to be processed introduced into the corona discharge treatment unit, and the introduced air can be effectively guided to the active area.
  • FIG. 7 is a diagram for explaining a modification of the configuration shown in FIG.
  • FIG. 8 is a diagram for explaining a “filter by water” function that can be realized by the configurations of FIGS. 6 and 7.
  • FIG. 9 is a view for explaining a modification of the structure shown in FIG. Drawing 10 is a figure for explaining another modification of a corona discharge treating part contained in an example, and air processed in a corona discharge field passes water in a water tank.
  • FIG. 11 is a diagram for explaining still another modified example of the corona discharge treatment unit included in the embodiment, in which the air treated in the corona discharge region is a layer containing air permeable water and a mesh under the layer. Pass through the shaped discharge electrode.
  • FIG. 11 is a diagram for explaining still another modified example of the corona discharge treatment unit included in the embodiment, in which the air treated in the corona discharge region is a layer containing air permeable water and a mesh under the layer. Pass through the shaped discharge electrode.
  • FIG. 12 is a diagram for explaining an embodiment in which a substance having a high water content is accommodated in a water tank included in the corona discharge treatment unit to prevent water in the water tank from spilling down.
  • FIG. 13 is a diagram for explaining a configuration of a discharge processing unit that can be incorporated in the discharge processing apparatus of the embodiment, and shows an example in which the corona discharge processing unit shown in FIG. 2 is unitized.
  • FIG. 14 is a diagram for explaining the configuration of a discharge processing unit that can be incorporated in the discharge processing apparatus of the embodiment, and shows an example in which the corona discharge processing unit shown in FIG. 7 is unitized.
  • FIG. 15 is a diagram for explaining a configuration of a discharge processing unit having a soot ozone removal function.
  • FIG. 1 is a functional block diagram of an embodiment suitable mainly for inactivation of airborne bacteria and viruses.
  • the discharge treatment apparatus 100 illustrated in FIG. In the case 2, an air flow path 8 leading from the inlet 4 to the outlet 6 is formed.
  • an arrow A indicates the flow of air to be processed.
  • the discharge treatment apparatus 100 generates ozone and OH radicals by corona discharge, and uses the ozone and OH radicals to remove gas components and particle components in the air passing through the air flow path 8.
  • Perform degrading treatment (including inactivation of airborne bacteria and airborne viruses).
  • the decomposition treatment includes a filtration step with water. That is, the decomposition process includes a “filter with water” process.
  • the air after the decomposition treatment (including inactivation of bacteria, etc.) passes through the outlet 6 after performing an ozone removal treatment for removing ozone remaining as a possibility in the air, if necessary. Released to the outside.
  • a filter unit 10 In the discharge treatment apparatus 100, a filter unit 10, a corona discharge treatment unit 12, an ozone removal unit 14, and a fan unit (blower) 16 are arranged in order from the upstream side to the downstream side of the air flow path 8. .
  • the filter unit 10 is provided with a relatively coarse filter made of a mesh or non-woven paper or non-woven fabric that can remove relatively large dust such as cotton dust, which tends to hinder processing performed in the corona discharge processing unit 12. Has been.
  • the air that has passed through the filter unit 10 enters the next corona discharge processing unit 12.
  • the corona discharge treatment unit 12 includes a discharge electrode 20 and a water tank 22 disposed below the discharge electrode 20.
  • the water tank 22 is made of an insulating material such as resin or glass.
  • the water tank 22 contains a second electrode 24 and water 26.
  • the second electrode 24 is optional, but is preferably a plate electrode, a mesh electrode (a porous sheet-like electrode), or a comb electrode disposed on the bottom of the water tank 22.
  • a heater (not shown) may be installed in the water tank 22, and the water in the water tank 22 may be heated to an appropriate temperature with this heater.
  • discharge processing apparatus 100 preferably includes a high voltage generation unit 28 and a power supply unit 30 incorporated in case 2, and power supply unit 30 receives a commercial power supply and receives a high voltage generation unit 28.
  • Supply power The high voltage generator 28 generates a DC high voltage continuously or in a pulse form.
  • the voltage applied to the discharge electrode 20 is preferably a negative electrode.
  • a positive electrode voltage may be applied to the discharge electrode 20.
  • the discharge electrode 20 is preferably a pin electrode or a ring electrode, but may be a wire electrode or a sawtooth electrode.
  • the pin electrode may be a needle-like electrode having a sharp tip or an electrode having a rounded tip. Note that the high voltage generation unit 28 and / or the power supply unit 30 may be disposed outside the case 2.
  • the second electrode 24 may be grounded, but preferably, a voltage having a polarity opposite to that of the discharge electrode 20 is applied to the second electrode 24. That is, in the case of a design in which a negative electrode voltage is applied to the discharge electrode 20, a positive electrode voltage is preferably applied to the second electrode 24.
  • a voltage having a polarity opposite to that of the discharge electrode 20 is applied to the second electrode 24. That is, in the case of a design in which a negative electrode voltage is applied to the discharge electrode 20, a positive electrode voltage is preferably applied to the second electrode 24.
  • a high DC voltage is supplied to the discharge electrode 20 continuously or in a pulse form.
  • a corona discharge is generated around the tip of the discharge electrode 20, and ozone is generated. Further, a plasma state is generated by corona discharge.
  • the water 26 in the water tank 22 evaporates due to the discharge.
  • An environment of appropriate moisture can be stably created by the evaporated moisture and the introduced water vapor in the air.
  • corona discharge is generated in the presence of moderate moisture, OH radicals are stably generated.
  • particle components in the air are charged by plasma, that is, ionization. This charged area is called an “active area”.
  • reference numeral 32 indicates an active area.
  • the generation mechanism of the above OH radical is represented by the following chemical formula. (1) O 3 ⁇ O 2 + O (2) O + H 2 O ⁇ 2.OH (3) O 3 + H 2 O ⁇ H 2 O 2 + O 2 (4) H 2 O 2 ⁇ 2.OH
  • .OH means a hydroxyl radical (OH radical).
  • ozone and OH radicals have a strong oxidizing action, and the oxidizing action is stronger in OH radicals than in ozone.
  • the gas component and the particle component contained in the air to be processed are decomposed by receiving the attack of ozone and OH radicals.
  • produce the smell of tobacco and a bad smell are decomposed
  • bacteria and viruses ozone and OH radicals deprive hydrogen from cell membranes and virus tissues. This inactivates airborne bacteria and viruses. In addition, airborne bacteria and their dead bodies are charged.
  • the water 26 in the water tank 22 becomes a stable source of moisture required for generation of OH radicals.
  • the water tank 22 also exhibits a “filter with water 26” function.
  • an ion wind that flows from the vicinity of the discharge electrode 20 toward the water surface 26a is generated.
  • the particles charged in the active area 32 are attracted to the water surface 26a of the water tank 22 by Coulomb force. This is the ionic wind described above.
  • charged particle components including bacterial dead bodies
  • electric charges such as particle components are electrically neutralized.
  • Particle components and the like enter the water with the momentum when they collide with the water surface 26a. That is, unlike the metal, the water 26 accepts the particle components without rebounding.
  • the water 26 in contact with the active area 32 receives gas components, particle components, airborne bacteria and viruses, airborne fungi and virus dead bodies, ozone, and part of OH radicals.
  • OH radicals generated in the corona discharge treatment unit 12 return to water as represented by the following formula when there are no organic substances such as cell membranes of floating bacteria and virus tissues.
  • OH radicals generated in the corona discharge treatment unit 12 can also contribute to the oxidative decomposition of formaldehyde, ammonia, and volatile organic substances, which are said to cause sick house syndrome.
  • the corona discharge treatment unit 12 When the air taken in by the discharge treatment apparatus 100 contains, for example, formaldehyde or ammonia, the corona discharge treatment unit 12 performs the following decomposition.
  • the decomposition of formaldehyde can be expressed by the following formula. (20) CH 2 O + 2 ( ⁇ OH) ⁇ H 2 O + CH 2 O 2 (formic acid) (21) CH 2 O 2 +2 ( ⁇ OH) ⁇ 2H 2 O + CO 2
  • the decomposition of ammonia (NH 3 ) can be expressed by the following formula. (30) 2NH 3 +6 ( ⁇ OH) ⁇ N 2 + 6H 2 O
  • ammonia is decomposed into nitrogen gas and water by OH radicals, and as a result, ammonia is deodorized and rendered harmless.
  • an ozone removal unit 14 is preferably disposed in the air flow path 8 following the corona discharge treatment unit 12.
  • the ozone removing unit 14 is not essential. That is, the ozone removing unit 14 may be omitted from the discharge treatment apparatus 100 of the embodiment.
  • the ozone removing unit 14 is composed of an ozone decomposition catalyst, an ultraviolet lamp 42 having a peak wavelength close to 254 nm (FIG. 1), or a combination of the ultraviolet lamp 42 and the ozone decomposition catalyst.
  • the ozone removing unit 14 may be made of an adsorbing material such as activated carbon together with or instead of the ozone decomposition catalyst.
  • a typical ozonolysis catalyst material there can be mentioned a honeycomb structure supporting manganese manufactured by JGC Universal. This ozone decomposition catalyst can decompose ozone into oxygen. It is known that ultraviolet rays having a peak wavelength of 254 nm also decompose ozone.
  • the discharge treatment apparatus 100 of the embodiment is suitable for installation in a private room of a hospital or a nursing home, for example.
  • the discharge treatment apparatus 100 when the discharge treatment apparatus 100 according to the embodiment is installed in a poultry house, space sterilization with excellent safety is possible.
  • An electric blower is installed in the fan unit 16 following the corona discharge processing unit 12. This electric blower forcibly creates an air flow from the inlet 4 to the outlet 6.
  • the fan unit 16 may be disposed on the upstream side of the air flow path 8.
  • the ozone removing unit 14 may be disposed on the downstream side of the fan unit 16.
  • the discharge treatment apparatus 100 preferably includes a water supply unit 40 for supplying water to the water tank 22.
  • the water supply unit 40 preferably includes a mechanism for maintaining the water level of the water surface 26a of the water tank 22 within a certain range.
  • the water supply unit 40 is composed of, for example, a detachable tank containing water or, for example, a PET bottle.
  • the water tank 22 is preferably detachable. The user can remove the water tank 22 and clean it. Of course, the water supply unit 40 may be omitted, and the user may directly replenish the water tank 22 with water occasionally.
  • FIG. 2 shows a corona discharge treatment unit 12 composed of a single discharge electrode 20.
  • FIG. 2 conceptually illustrates the corona discharge treatment unit 12 included in the embodiment. It should be understood that it is a figure.
  • a plurality of discharge electrodes 20 are placed adjacently to substantially expand the active area 32 and / or all of the air taken from the inlet 4 is effectively singular. Alternatively, it may be designed to pass through a plurality of active areas 32. Each active area 32 is generated for each discharge electrode 20.
  • FIG. 4 exemplifies a specific configuration that can achieve the purpose of increasing the processing capacity of the discharge processing apparatus 100.
  • FIG. 4 is a plan view of the corona discharge treatment unit 12.
  • a plurality of discharge electrodes 20 are installed in the corona discharge treatment section 12, and these discharge electrodes 20 are arranged in a staggered manner.
  • FIG. 5 shows a preferred configuration around the discharge electrode 20.
  • the corona discharge processing unit 54 illustrated in FIG. 5 has an air guide passage 56 a formed by a guide tube 56 extending along the discharge electrode 20.
  • the air guide passage 56a defines the flow direction of the air entering the corona discharge processing unit 54.
  • the guide cylinder 56 is coaxial with the elongated discharge electrode 20 extending in the vertical direction.
  • the flow of air entering the corona discharge treatment section 54 through the air guide passage 56a is indicated by the reference symbol B. This air flow B is directed in the axial direction and downward of the discharge electrode 20.
  • the tip (lower end) of the discharge electrode 20 is preferably positioned above the lower end of the guide tube 56.
  • the tip (lower end) of the discharge electrode 20 may be at the same level as the lower end of the guide tube 56, or the tip (lower end) of the discharge electrode 20 may be positioned below the lower end of the guide tube 56.
  • the guide tube 56 guides the air downward along the discharge electrode 20 while adjusting the flow of air to be processed.
  • the distal end (lower end) of the discharge electrode 20 is positioned above the lower end of the guide tube 56, the distal end portion of the discharge electrode 20 is surrounded by the guide tube 56. By the way, the portion of the ion wind that flows down directly from the tip of the discharge electrode 20 is strongest.
  • the portion where the ion wind is strongest is indicated by an arrow C in FIG.
  • the air passing through the lower end of the guide tube 56 (air guide passage 56a) is attracted to the ion wind C.
  • corona discharge occurs around the tip of discharge electrode 20.
  • An area where corona discharge occurs is indicated by reference numeral 32a.
  • ozone and OH radicals are generated by corona discharge, and an active area 32 is generated.
  • the active area 32 reaches the water surface 26a.
  • the active area 32 contains ozone and OH radicals.
  • ozone and OH radicals decompose gas components and particle components in the air. Further, in this active area 32, ozone and OH radicals inactivate floating bacteria and the like.
  • the air flow B induced in the guide cylinder 56 (air guide passage 56 a) is directed in a direction intersecting the axis of the discharge electrode 20 at or just below the tip of the discharge electrode 20. It may be. 6 and 7, the particle component charged in the active area 32 is given a reference symbol P.
  • the “filter by water” function will be described with reference to FIG.
  • the air to be treated can be effectively guided to the active area 32 by the air guide passage 56a described above, but also the air flow B induced by the air guide passage 56a passes through the relatively narrow air guide passage 56a. Makes the flow rate relatively fast and strong. This fast air flow B is directed downward. This strong downward air flow B assists the floating charged particles to move toward the water surface 26a. Further, the strong downward air flow B causes the gas component to collide with the water surface 26a.
  • the charged particle component, the charged floating bacteria and their dead bodies, the gas component, ozone, and the OH radical are guided into the water 26 by the air flow B and the ionic wind that flow downward from the air guide passage 56a. Can do. This is the “filter” function by the water 26.
  • the embodiment of FIG. 5 has the following characteristics.
  • the water 26 in the water tank 22 constitutes a counter electrode.
  • the water 26 in the water tank 22 serves as a water source for stably generating OH radicals.
  • the water 26 in the water tank 22 exhibits a “filter with water” function capable of decomposing.
  • the “water filter” function can be enhanced by the downflow and ion wind generated by the air guide passage 56a opened downward (FIG. 8).
  • FIG. 9 is a diagram for explaining a modification of the embodiment of FIG. Referring to FIG. 9, a plurality of discharge electrodes 20 are provided in one guide cylinder 56. The plurality of discharge electrodes 20 are arranged adjacent to each other so that the active areas 32 generated by the discharge electrodes 20 overlap each other. Thereby, the active area produced
  • the 10 has a side wall 62 that has entered the water tank 22, and the water tank 22 is divided into two sections 22a and 22b by the side wall 62.
  • a second electrode 24 is disposed in the first section 22a.
  • the air that has passed through the first compartment 22a is sucked up by negative pressure, and the air that has passed through the first and second compartments 22a and 22b passes through the outlet 6 of the air flow path 8 from the device 100. Released.
  • the processing unit 66 shown in FIG. 11 includes a porous third electrode 74 having a porous shape that allows air to pass therethrough, and is electrically connected to the third electrode 74, that is, the third electrode 74.
  • a layer 68 through which air can pass such as a non-woven fabric having capillary action, is disposed.
  • the air passage layer 68 is constantly replenished with water from the water supply tank 70. That is, water is stored in the water tank 70, and the water in the water tank 70 is supplied through the pipe 72 to the water-containing air passage layer 68 having a capillary phenomenon. You may make it supply water to the air passage layer 68 using a water bottle instead of the water supply tank 70.
  • FIG. As a result, the air passage layer 68 is always moist. Therefore, the water contained in the air passage layer 68 on the third electrode 74 constitutes a counter electrode for the discharge electrode 20.
  • the floating bacteria and dead viruses (dead bodies) inactivated by ozone and OH radicals generated in the active area 32 are captured by the air passage layer 68 and water contained therein.
  • the air effectively filtered by the air passage layer 68 passes through the mesh-like third electrode 74 and is discharged from the device 100 through the outlet 6 of the air flow path 8.
  • FIG. 12 is a diagram for explaining a measure for preventing water spillage in the aquarium 22.
  • the water-absorbing substance 76 that can be employed include substances having a capillary phenomenon, that is, substances having a high water-absorbing ability, typically cellulose sponges, diatomaceous earth, porous ceramics and the like.
  • a prototype of a discharge treatment apparatus 100 including the corona discharge treatment section 12 shown in FIG. 2 was tested, and the bacteria and virus removal performance of this prototype was tested.
  • the result of this test was evaluated in accordance with Appendix D “Evaluation Test for Removal Performance against Airborne Viruses” of JEM 1467 of the Japan Electrical Manufacturers' Association, and the reduction rate after 90 minutes was 99.96%.
  • the dust reduction rate after 90 minutes was 99.5%. This means that the discharge treatment apparatus 100 is effective for removing PM2.5.
  • the example shown in FIG. 5 was prototyped and tested for tobacco smoke, it was confirmed that the odor and tar components of tobacco could be removed.
  • FIGS. 15 is a diagram for explaining that the ozone removing unit 14 may be incorporated in the processing units 80 and 82.
  • the ultraviolet lamp 42 incorporated in the processing unit 84 having an ozone removing function is optional.
  • the processing units 80, 82, 84 can be incorporated into an already installed air conditioning facility.
  • the corona discharge processing unit described with reference to FIGS. 4, 5, and 9 to 11 can be similarly unitized.
  • An ozone removal function may be incorporated into this unit.
  • the present invention can be applied to air cleaners for hospitals, nursing homes, etc., air cleaners for PM2.5 measures, air cleaners for smoke separation in smoking rooms, sterilizers for poultry farms, deodorizers, and the like.

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PCT/JP2017/036201 2016-10-06 2017-10-04 放電処理装置及びその放電処理ユニット WO2018066622A1 (ja)

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IL269021B2 (en) * 2019-08-29 2023-05-01 Riskin Yefim Air disinfection method and disinfection device
KR102300125B1 (ko) 2020-04-06 2021-09-07 김철 이온풍 공기 정화기
KR20210123871A (ko) 2020-04-06 2021-10-14 김철 실내용 이온풍 공기정화기
KR102552955B1 (ko) 2021-07-04 2023-07-06 김철 이온풍 공기 정화기
KR102552956B1 (ko) 2021-07-04 2023-07-06 김철 리프팅 타입의 이온풍 공기정화기
CN115164314B (zh) * 2022-07-11 2023-12-08 中电科奥义健康科技有限公司 一种抑制臭氧产生的水合自由基发生装置

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