WO2020145165A1 - Air purification device - Google Patents

Air purification device Download PDF

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Publication number
WO2020145165A1
WO2020145165A1 PCT/JP2019/051002 JP2019051002W WO2020145165A1 WO 2020145165 A1 WO2020145165 A1 WO 2020145165A1 JP 2019051002 W JP2019051002 W JP 2019051002W WO 2020145165 A1 WO2020145165 A1 WO 2020145165A1
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WO
WIPO (PCT)
Prior art keywords
air
hypochlorous acid
dust collecting
collecting filter
tray
Prior art date
Application number
PCT/JP2019/051002
Other languages
French (fr)
Japanese (ja)
Inventor
茂俊 堀切
林　智裕
祥太 井深
裕貴 水野
陽子 石田
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2019057588A external-priority patent/JP2020110557A/en
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN201980087811.0A priority Critical patent/CN113260444B/en
Publication of WO2020145165A1 publication Critical patent/WO2020145165A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • A61L9/01—Deodorant compositions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/12—Apparatus, e.g. holders, therefor
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the present disclosure relates to an air purification device that removes bacteria, viruses, odors, etc. in the air.
  • Air cleaners are known (for example, Patent Document 1). With this air purifier, it is possible to remove bacteria and odorous components adhering to the dust collection filter in the housing, the blower fan, and the inner surface of the main body case by the generated sterilizing substance.
  • the sterilizing substance circulated in the housing has an effect of suppressing bacteria and the like on the dust collecting filter to some extent.
  • the dust, bacteria, and viruses trapped on the dust collection filter are not adequately dealt with, there is a risk of secondary contamination due to re-scattering of the remaining dust, bacteria, and viruses from the housing.
  • the dust accumulated on the surface of the dust collection filter falls from the dust collection filter when it is vibrated or is shut down and re-scatters.
  • the air purification device includes a dust collection filter, a tray, and a purification unit in the housing.
  • the dust collecting filter removes fine particles by passing air.
  • the tray is arranged below the dust collecting filter and stores the hypochlorous acid aqueous solution for sterilizing or deodorizing.
  • the purifying unit is formed in the tray to disinfect or deodorize the air that has passed through the dust collecting filter, and is formed so as to be able to pass through the opening of the tray to the upstream side in the air passing direction in the dust collecting Furuta. There is.
  • the opening is located on the upper surface of the tray. In the dust collecting filter, when viewed from a direction orthogonal to the air passage direction in the dust collecting filter, the upstream surface of the dust collecting filter is arranged in the opening.
  • the tray is arranged below the dust collecting filter, and the dust collecting filter is arranged such that the upstream surface of the dust collecting filter is located in the opening of the tray. Therefore, the particles falling from the dust collecting filter can be collected in the tray. Since the aqueous solution of hypochlorous acid is stored in the tray, it is possible to strongly remove and control the particles that have fallen, and it is possible to more reliably prevent secondary contamination due to re-dispersion.
  • FIG. 1 is a schematic side view showing an internal structure of an air purification device according to Embodiment 1 of the present disclosure.
  • FIG. 2 is a schematic rear view showing the structure of the sterilization unit of the air purification apparatus.
  • FIG. 3A is a schematic side view showing the operation of the air purification device according to Embodiment 2 of the present disclosure during indoor purification.
  • FIG. 3B is a schematic side view showing the operation of the air purification device during internal circulation.
  • FIG. 4A is a schematic side view showing an indoor discharge operation of the air purification device according to Embodiment 3 of the present disclosure.
  • FIG. 4B is a schematic side view showing the internal circulation and the upward blowing operation of the air purifier.
  • FIG. 1 is a schematic side view showing an internal structure of an air purification device according to Embodiment 1 of the present disclosure.
  • FIG. 2 is a schematic rear view showing the structure of the sterilization unit of the air purification apparatus.
  • FIG. 3A is a schematic side view showing
  • FIG. 5 is a schematic side view showing the internal structure of the air purification device according to Embodiment 4 of the present disclosure.
  • FIG. 6A is a schematic rear view showing the configuration of the deodorizing unit of the air purifier.
  • FIG. 6B is a schematic diagram showing a cross-sectional structure of a gas-liquid contact portion of the air purification device.
  • FIG. 7A is a schematic view showing an example of a structure in a gas-liquid contact portion of the air purification device.
  • FIG. 7B is a diagram showing a flow of the hypochlorous acid aqueous solution in the air purifier.
  • the air purification device includes a dust collection filter, a tray, and a purification unit in the housing.
  • the dust collecting filter removes fine particles by passing air.
  • the tray is arranged below the dust collecting filter and stores the hypochlorous acid aqueous solution for sterilizing or deodorizing.
  • the purification unit is formed in the tray, disinfects or deodorizes the air that has passed through the dust collecting filter, and is formed so as to be able to pass through the opening of the tray to the upstream side in the air passing direction of the dust collecting filter. ing.
  • the opening is located on the upper surface of the tray.
  • the dust collecting filter is arranged such that the upstream surface of the dust collecting filter is located inside the opening when viewed from a direction orthogonal to the air passage direction of the dust collecting filter.
  • hypochlorous acid has a function of decomposing the odorous component adsorbed on the dust collecting filter or in the housing, a secondary effect of preventing the odor from being re-emitted from the housing can be obtained. Further, since hypochlorous acid is stored in an aqueous solution for a long period of time, hypochlorous acid is continuously volatilized and released spontaneously even when the air purifying apparatus is stopped, and the action can be continued.
  • the upstream surface of the dust collection filter is located inside the opening of the tray, even if the particulates deposited on the dust collection filter fall during the stop, the particulates can be reliably received by the tray. Therefore, it can be prevented from flowing out and scattering outside the housing. Since the hypochlorous acid aqueous solution having a high disinfecting action is stored in the tray, the microparticles such as bacteria and viruses that have fallen can be inactivated by the action of this hypochlorous acid.
  • the purification section of the air purification device is for sterilizing with hypochlorous acid
  • the housing has an inlet and an outlet.
  • the air purification device further includes a blower unit in the housing.
  • the air blower has discharge ports in at least two directions, and sucks air that has been sucked in through the suction port and passed through the dust collecting filter and discharged to the blowout port side and the purification unit side.
  • the air purification unit includes a blowing shutter that can open and close the blowing port. Then, the blowout shutter closes the blowout port, and the air that has passed through the dust collection filter discharged toward the purification unit by the blower unit is passed from the purification unit to the upstream side of the dust collection filter through the opening. Circulate in the enclosure even through.
  • the air purification device further includes a hypochlorous acid outlet, a hypochlorous acid outlet shutter, and a circulation air passage shutter.
  • the hypochlorous acid outlet is formed in the lower part of the front surface of the housing facing the room, and blows out the air that has passed through the purification unit from the purification unit.
  • the opening of the hypochlorous acid blowing outlet can be adjusted with the hypochlorous acid blowing shutter.
  • the circulating air passage shutter can adjust the opening degree of the opening. Then, the air purifying device closes a part of the opening by the circulating air passage shutter, and opens at least a part of the hypochlorous acid blowing outlet by the hypochlorous acid blowing shutter, and the air passed through the purifying unit. A part of is released indoors.
  • This not only removes bacteria in the housing and dust collection filter, but also opens the hypochlorous acid outlet to allow the surface of the room, especially the floor, to be separated from the housing by the hypochlorous acid contained in the released air. It is possible to sterilize dust and air on the floor surface that falls on the surface and becomes a source of indoor pollution.
  • the purifying section of the air purifier removes odorous components by bringing the air that has passed through the dust collection filter into gas-liquid contact with the hypochlorous acid aqueous solution.
  • odor components can be removed by ventilating the purification section.
  • the air passing from the purification unit to the upstream side of the dust collecting filter contains hypochlorous acid, fine particles such as bacteria and viruses on the dust collecting filter are immediately sterilized. Become. That is, not only dust and sterilization of aerosols such as microorganisms in the air but also deodorization of odorous components in the air can be performed, so that an air purification device with high air purification efficiency can be obtained.
  • FIG. 1 is a schematic side view showing the internal structure of the air purification device 1 according to the first embodiment.
  • the upstream side of the air flow in the air purification device 1 may be simply referred to as “upstream side”, and the downstream side of the air flow in the air purification device 1 may be simply referred to as “downstream side”.
  • the vertical direction in the state where the air purification device 1 is installed may be referred to as “upper side” and “lower side” as the vertical direction.
  • the vertical direction with the air purification device 1 installed may be referred to as the vertical direction
  • the upper surface of the air purification device 1 may be referred to as the “upper surface”. Note that these descriptions also apply to Embodiments 2 to 4 (air purification devices 1A, 1B, 31) described later.
  • the air purification apparatus 1 including the sterilization unit 8 that sterilizes the air that has passed through the dust collection filter 5 will be described.
  • the air purification device 1 includes a substantially box-shaped housing 2, and the housing 2 has a suction port 3 and a blowing port 4. Specifically, the surface of the housing 2 is provided with a substantially quadrangular suction port 3 for sucking indoor air, and the top surface of the housing 2 (the upper surface in FIG. 1) is blown out into a substantially quadrangular shape. A mouth 4 is provided.
  • the air purifying device 1 includes, in the housing 2, a dust collecting filter 5, a tray 7, a sterilizing unit 8, and a blower unit 9 in particular.
  • the air purification device 1 arranges a substantially quadrangular dust collecting filter 5 that allows air to pass therethrough and removes fine particles so as to be perpendicular to the direction of air flow, thereby performing air purification.
  • the dust collection filter 5 is fixed so as to be in close contact with the support frame 6 provided in the housing 2, so that sucked air does not leak from the gap around the dust collection filter 5.
  • a tray 7 for storing an aqueous solution of hypochlorous acid for performing sterilization is arranged, and a sterilizing unit 8 is provided in the tray 7. It is formed.
  • the sterilization unit 8 is formed so that the air that has passed through the dust collecting filter 5 contains hypochlorous acid to sterilize the air and can pass to the upstream side of the dust collecting filter 5.
  • a blower unit 9 that blows air is arranged adjacent to the downstream side of the dust collection filter 5.
  • the blower unit 9 has a discharge port for discharging air in at least two directions, and the air sucked from the suction port 3 and passed through the dust collecting filter 5 is discharged to the discharge port 4 side and the sterilization unit 8 side. ..
  • the blower unit 9 has an upper discharge port 10 that discharges mainly to the upper side (blowout port 4 side) on the outlet side of the blower unit 9 and a lower discharge port 11 that discharges to the lower side (the sterilization unit 8 side) as a subsidiary. Have.
  • the upper outlet 10 of the blower unit 9 communicates with the outlet 4 provided on the upper surface of the housing 2.
  • the lower discharge port 11 communicates with the tray 7 and the sterilization unit 8 and further with the upstream side of the dust collecting filter 5.
  • the air purifying device 1 is provided with an air purifying air passage 12 that allows the air sucked into the housing 2 from the suction port 3 to pass through the dust collecting filter 5 and is blown out from the blowing port 4.
  • the air purification device 1 also includes a purification air passage 13 that supplies the air that has passed through the dust collecting filter 5 to the upstream side of the dust collecting filter 5 after further passing through the sterilization unit 8.
  • the sterilization unit 8 provided in the purification air passage 13 is installed in the tray 7 for storing the hypochlorous acid aqueous solution so as to be impregnated with the hypochlorous acid aqueous solution.
  • the sterilization unit 8 for releasing hypochlorous acid is for spraying hypochlorous acid water in the form of mist or vaporizing it in the form of gas.
  • hypochlorous acid water is used. Will be described as gasified.
  • the sterilization unit 8 has a volatilization unit 14, a hypochlorous acid water supply unit 15, and a drainage unit 16.
  • the volatilization unit 14 is for sucking up the aqueous hypochlorous acid solution and continuously volatilizing a certain amount of hypochlorous acid in the passing air to release the hypochlorous acid to the purification air passage 13. And is formed so that the surface is in contact with the purification air passage 13.
  • the amount of volatilized hypochlorous acid can be adjusted according to the concentration of the aqueous hypochlorous acid solution in the tray 7.
  • the tray 7 is provided with a hypochlorous acid water supply unit 15 for supplying a hypochlorous acid aqueous solution having a predetermined concentration.
  • the hypochlorous acid water supply unit 15 enables the hypochlorous acid aqueous solution in the tray 7 to be supplied while maintaining a constant water level.
  • a drainage portion 16 for draining the aqueous solution of hypochlorous acid in the tray 7 is formed below the tray 7.
  • the tray 7 is placed below the dust collecting filter 5. That is, the sterilization unit 8 is formed in the tray 7 arranged below the dust collecting filter 5.
  • the tray 7 is positioned just below the surface of the dust collecting filter 5 on the upstream side, that is, just below the suction surface 17.
  • an opening 18 is formed in the upper part of the tray 7 at a position adjacent to the suction surface 17 of the dust collecting filter 5 on the downstream side of the sterilization unit 8. That is, in the dust collecting filter 5, when viewed from a direction (upper side in FIG. 1) orthogonal to the air passing direction in the dust collecting filter 5, the suction surface 17 which is the upstream side of the dust collecting filter 5 is a tray. It is arranged so that it may be located in the opening of 7.
  • the volatilized hypochlorous acid easily acts directly on the suction surface 17 of the dust collecting filter 5 which is adjacent to the dust collecting filter 5, and the dust or dust dropped from the surface of the dust collecting filter 5 is removed from the hypochlorous acid in the tray 7. It can be collected in an aqueous acid solution and strongly sterilized by the action of hypochlorous acid to prevent re-dispersion.
  • an inflow port 19 communicating with the lower discharge port 11 is formed on the upstream side of the sterilization unit 8.
  • the inflow port 19 may be provided in the upper part of the tray 7.
  • the air volume of the blower unit 9 and the air passage cross-sectional areas of the air purification air passage 12 and the purification air passage 13 are set so that the air volume of the air blown from the air outlet 4 of the housing 2 becomes a predetermined value. Adjust for losses.
  • a volatilization part 14 for volatilizing hypochlorous acid is formed inside the purification air passage 13, and air is ventilated along the surface of the volatilization part 14.
  • Hypochlorous acid molecules are volatilized from the hypochlorous acid aqueous solution, and when air flows on the surface of the hypochlorous acid aqueous solution, hypochlorous acid is contained in the air. Therefore, the air circulating in the housing 2 contains hypochlorous acid.
  • the air containing the hypochlorous acid uniformly contacts the surface of the dust collecting filter 5, and the dust collecting filter 5 is continuously exposed to the hypochlorous acid to be sterilized.
  • the purification air passage 13 is a path that returns from the lower outlet 11 of the air blower 9 to the dust collecting filter 5. Further, since the purification air passage 13 connects the pressurized space on the downstream side of the blower unit 9 and the depressurized space in front of the dust collection filter 5, it moves toward the upstream side of the dust collection filter 5. Ventilation is provided.
  • the tray 7 has a substantially box-like shape with an open top surface, and is arranged at the bottom of the housing 2 as a structure capable of storing a hypochlorous acid aqueous solution. In order to facilitate the maintenance of the tray 7, for example, it is preferable that the tray 7 be slidable in the horizontal direction and detachable.
  • blower unit 9 the volatilization unit 14, the dust collecting filter 5, the hypochlorous acid water supply unit 15, and the tray 7 described above will be described in more detail.
  • the blower unit 9 is provided inside the housing 2 and is connected to the subsequent stage (downstream) of the dust collecting filter 5 so as to communicate therewith.
  • the blower unit 9 has at least a motor, a fan, a casing, and a discharge port (upper discharge port 10 and lower discharge port 11).
  • the upper discharge port 10 of the blower unit 9 is connected to the air cleaning air passage 12 so as to be in close contact therewith, and the purified air is supplied from the air outlet 4 into the room.
  • the fan is preferably one capable of supplying a necessary air volume to each of them even if the pressure loss of the dust collecting filter 5 or the pressure difference between the air purification air passage 12 and the purification air passage 13 occurs, and a centrifugal sirocco type fan is preferable. ..
  • the volatile part 14 for volatilizing the hypochlorous acid holds the hypochlorous acid water on the surface and makes contact with the air, as described above.
  • the volatilization unit 14 may have various shapes and forms such as a flat plate shape, a wavy shape, a fibrous shape, a lattice shape, and a mesh shape capable of adhering a liquid to the surface, but a mesh shape having a large amount of attached water and easily contacted with air. Is preferred.
  • the surface of the volatilization unit 14 is arranged so that the airflow flows along it in order to stably evaporate from the surface of the volatilization unit 14 without increasing the ventilation resistance.
  • the volatilization unit 14 increase the volatilization amount if the material is formed into a three-dimensional shape.
  • a multilayer structure using a plurality of flat plates, a curved surface shape, a cylindrical shape, or a cylindrical shape, and a shape in which a plurality of them are combined can be mentioned.
  • a cylindrical shape is used. Good condition.
  • the cylindrical volatilization unit 14 is rotatably incorporated in the tray 7, and is rotated during operation, whereby the hypochlorous acid water can be stably supplied to the surface of the volatilization unit 14.
  • the cylindrical upper surface is arranged in the purification air passage 13 so as to be along the direction of the air flow.
  • a material that is less reactive to the hypochlorous acid aqueous solution that is, a material that is less deteriorated by the hypochlorous acid aqueous solution is used.
  • polyolefin resin polyethylene resin, polypropylene resin, etc.
  • PET polyethylene terephthalate resin
  • vinyl chloride resin fluorine resin
  • PTFE PolyTetraFluoroEthylene
  • PFA PolyFluoroEthylene
  • ETFE EthyleneTetraFluoroEthylene
  • cellulose etc.
  • a ceramic material or the like is used.
  • polyester is adopted as an example of the material forming the volatilization unit 14.
  • the dust collecting filter 5 is a pleated air cleaning filter made of fibers such as non-woven fabric, and has medium performance, high performance, HEPA (High Efficiency Particulate Air), ULPA (Ultra Low Penetration Air), and other performance filters. Can be used. Since the dust collecting filter 5 gradually becomes clogged and its ventilation resistance increases, it has a detachable structure so that it can be replaced periodically.
  • the material of the dust collecting filter 5 is not particularly specified as long as it has a certain durability against hypochlorous acid such as resin or glass fiber. Further, a functional material that enhances the disinfecting action and the deodorizing action may be blended on the surface of the dust collecting filter 5, and when a catalyst material, amines or the like is used, the activity is increased or the durability is maintained. It is preferable because the function is improved.
  • the hypochlorous acid water supply unit 15 is for preparing a hypochlorous acid aqueous solution and supplying the hypochlorous acid aqueous solution to the tray 7 through a pipe or a water passage.
  • the aqueous solution of hypochlorous acid may be any solution containing non-dissociated molecules of hypochlorous acid (HOCl), and can be diluted with sodium hypochlorite or by electrolyzing water containing chloride ions. Although it is prepared, an electrolysis type is preferable because the concentration can be easily adjusted and chemicals can be easily handled.
  • powdered or tablet-shaped sodium chloride, dilute hydrochloric acid solution having a known concentration, or both are added to tap water stored in advance to prepare an aqueous solution containing chloride ions.
  • the prepared aqueous solution containing chloride ions is electrolyzed by an insoluble electrode in which platinum or iridium is formed on a base material such as titanium to obtain a hypochlorous acid having a hydrogen ion concentration of 2.2 to 8.6.
  • Produces water When electricity is applied to the electrode, chlorine is generated at the electrode interface on the anode side and immediately dissolved in water to generate hypochlorous acid water. Since the amount of this hypochlorous acid water produced depends on the amount of electricity applied, it is preferable to obtain the amount of electricity applied to the electrode in advance and to apply electricity at an appropriate timing to adjust the concentration within a predetermined concentration range.
  • the concentration of the hypochlorous acid aqueous solution and the hydrogen ion concentration must be within the range where the hypochlorous acid necessary for sterilization can be released.
  • the concentration of the hypochlorous acid aqueous solution and the hydrogen ion concentration are preferably 5 mg/L or more and 200 mg/L or less and within the range of pH 5.0 to pH 8.6, more preferably 30 mg/L or more and 80 mg/L.
  • a bactericidal effect is high when it is the following and it is slightly acidic hypochlorous acid water in the range of pH 5.0 to pH 6.0.
  • the concentration of hypochlorous acid water may be controlled by the amount of electricity supplied to the electrode in the case of the electrolysis type and by the injection amount of the stock solution in the case of the chemical type. It is known that vegetative bacteria, fungi, viruses, mycobacteria, bacterial spores, etc. can be sterilized and suppressed in the concentration range of this hypochlorous acid aqueous solution.
  • the gas concentration In order for hypochlorous acid, which volatilizes from the aqueous solution of hypochlorous acid, to obtain a sterilizing effect, the gas concentration must be 0.01 ppm or higher. Further, in consideration of the health effects of inhalation to the human body, the gas concentration needs to be 0.5 ppm or less. More preferably, it is 0.02 ppm or more and 0.1 ppm or less. It is known that vegetative bacteria, viruses, fungi, etc. can be sterilized and suppressed within this gas concentration range.
  • hypochlorous acid gas When hypochlorous acid gas is volatilized from the hypochlorous acid aqueous solution supplied to the tray 7 by ventilation, the concentration of the hypochlorous acid aqueous solution is reduced and the volatilization amount is reduced. Therefore, it is necessary to prevent the volatilization amount of hypochlorous acid gas from falling below a predetermined concentration.
  • the hypochlorous acid aqueous solution in the tray 7 may be appropriately supplied and drained, and a new hypochlorous acid aqueous solution is supplied from the hypochlorous acid aqueous solution supply unit 15 to maintain the water quality (appropriate concentration).
  • the drainage is drained from the drainage section 16 through a pipe or a pipe connected to the tray 7 by a water passage.
  • the drain section 16 is provided with a valve that can be opened and closed so that drainage can be easily controlled through piping or the like.
  • a suction pump may be provided. It is more preferable to use these to drain the water, because automatic operation can be performed using an electric signal in the program operation control.
  • the drained water is either stored in a tank or drained directly to a sewer pipe.
  • the hypochlorous acid aqueous solution is stored in the tray 7, the volatile part 14 is formed so as to be impregnated with the hypochlorous acid aqueous solution, and the hypochlorous acid aqueous solution is supplied so that the hypochlorous acid aqueous solution in the tray 7 is kept at a constant water level.
  • the part 15 is formed. It is preferable that the volatilization unit 14 and the hypochlorous acid water supply unit 15 can be taken in and out from above the tray 7 because the structure can be simplified. Further, the drainage part 16 provided at the lower part of the tray 7 is arranged diagonally to the hypochlorous acid water supply part 15 so that the hypochlorous acid aqueous solution in the tray 7 can be effectively drained. Is preferred.
  • hypochlorous acid becomes mainly gaseous hypochlorous acid gas when released into the air.
  • This hypochlorous acid gas is a gas containing a non-dissociated state of hypochlorous acid molecules (HOCl) contained in an aqueous solution of hypochlorous acid, and is considered to be a main body that exerts a sterilizing/deodorizing action. ..
  • HOCl non-dissociated hypochlorous acid molecules
  • pKa dissociation constant
  • hypochlorous acid has a constant vapor pressure based on Henry's law and has a property of volatilizing from an aqueous solution of hypochlorous acid. Therefore, when air is aerated through the liquid surface of the hypochlorous acid aqueous solution, the air contacting the liquid surface is continuously replaced, and the vapor pressure of the hypochlorous acid molecule (HOCl) on the liquid surface is lowered, and the Chloric acid molecules (HOCl) can be volatilized. Furthermore, this hypochlorous acid molecule (HOCl) is known to have a strong bactericidal action.
  • the gas containing the hypochlorous acid molecule (HOCl) is passed through the dust collecting filter 5, whereby the bacteria collected on the surface of the dust collecting filter 5 or It is possible to eradicate viruses and the like.
  • the air purification device 1 collects the bacteria and viruses contained in the air taken in from the room with the dust collection filter 5 and also the dust collection filter 5 by the action of hypochlorous acid volatilized from the volatilization unit 14.
  • the surface of 5 can be sterilized.
  • the bioaerosol such as bacteria and viruses adhering to the surface of the dust collection filter 5 causes re-dispersion of fine particles when the dust collection filter 5 is attached or detached or when the operation of the air purifying device 1 is started, and causes secondary pollution. May be.
  • the hypochlorous acid gas is passed through the dust collecting filter 5 to continuously sterilize and suppress these bacteria and viruses. Further, the dropped fine particles pass through the opening 18 provided below the dust collecting filter 5 and are collected in the tray 7 that stores the hypochlorous acid aqueous solution. Therefore, such a problem of secondary pollution can be solved.
  • the hypochlorous acid water supply unit 15 generates an aqueous solution of hypochlorous acid having a predetermined concentration.
  • this hypochlorous acid aqueous solution is supplied to the tray 7, and the cylindrical volatilization part 14 is rotated by a motor to continuously impregnate the surface with the hypochlorous acid aqueous solution and deposit it.
  • the air blower 9 is operated, contaminants contained in the air (indoor air) sucked from the suction port 3 are collected by the dust collecting filter 5.
  • the clean air that has passed through the dust collecting filter 5 is supplied to the room through the air clean air passage 12 from the outlet 4 and is circulated through the purifying air passage 13.
  • the purifying air passage 13 if the circulating air is ventilated on the surface of the volatilization unit 14, the hypochlorous acid volatilizes according to the wind speed, and the air containing the hypochlorous acid is the dust collecting filter 5 Merge into the previous stage (upstream side) of.
  • the hypochlorous acid uniformly acts on the dust collection filter 5 together with the indoor air, and acts on the bacteria and viruses collected on the filter to continuously remove bacteria.
  • FIG. 3A is a side schematic view showing an operation of the air purifying apparatus 1A according to the second embodiment during indoor cleaning
  • FIG. 3B is a side schematic view showing an operation of the air purifying apparatus 1A during internal circulation. is there.
  • the air purification device 1A includes a mechanical blowing shutter 20 that can open and close the blowing port 4.
  • the air purifying device 1 according to the first embodiment in that the blowing shutter 20 is closed to sterilize the inside without blowing air from the housing 2 (hereinafter, also referred to as “internal sterilizing operation”). Is different.
  • the air purifying apparatus 1A closes the blowout port 4 that was open during indoor purification (see FIG. 3A) and closes it with the blowout shutter 20 during internal sterilization operation (see FIG. 3B).
  • the blowing shutter 20 is formed of at least one flat plate having the same shape with respect to the surface of the blowing port 4.
  • the blowing shutter 20 is rotatable about, for example, one side on one side and has a structure in which a stepping motor (not shown) is connected to the axis so that the blowing shutter 20 can be opened and closed depending on the rotation amount of the stepping motor.
  • the air purifying device 1A closes the outlet 4 with the blowing shutter 20 and continuously circulates the air containing hypochlorous acid in the housing 2 through the purifying air passage 13.
  • the concentration of hypochlorous acid rises, and the amount of hypochlorous acid that acts on the surface of the dust collection filter 5 and the housing 2 can be increased. It is possible to strongly sterilize the inside of the casing 2 of 1A.
  • FIG. 3A shows an operating state during normal operation (during indoor cleaning), but as shown in FIG. 3B, the blowing port 20 is closed by the blowing shutter 20 to operate the blower unit 9. Then, the airflow does not flow in the air purification air passage 12, but the entire amount flows in the purification air passage 13. As a result, the air containing hypochlorous acid can be continuously circulated in the housing 2 of the air purifying apparatus 1A. Since hypochlorous acid continues to volatilize continuously, the concentration of hypochlorous acid in the purification air passage 13 gradually increases.
  • Such internal sterilization operation can be surely sterilized by programming the circuit board in advance and automatically operating it regularly or operating for a certain period of time before stopping the indoor cleaning operation. preferable.
  • FIG. 4A is a schematic side view showing the operation of releasing hypochlorous acid into the room by the air purifying apparatus 1B according to Embodiment 3, and FIG. 4B shows the internal circulation and upward blowing operation of the air purifying apparatus 1B. It is a side schematic diagram shown.
  • the air purifier 1B is provided with a hypochlorous acid outlet 21, a hypochlorous acid outlet shutter 22 and a circulating air duct shutter 23, and hypochlorous acid is emitted from the hypochlorous acid outlet 21 into the room. It is different from the air purification device 1 according to the first embodiment in points.
  • a hypochlorous acid outlet 21 is openably and closably provided in a lower portion of a front surface of the housing 2 facing the room (a lower portion when the air purifying apparatus 1B is installed). Has been formed.
  • the hypochlorous acid outlet 21 is for blowing out at least a part of the air that has passed through the disinfection section 8 into the room.
  • the hypochlorous acid outlet 21 is formed so that the downstream side of the volatilization unit 14 in the purification air passage 13 communicates with the outside of the housing 2.
  • a mechanical hypochlorous acid blowing shutter 22 capable of opening and closing the hypochlorous acid blowing port 21 is formed.
  • a mechanical circulation air passage shutter 23 that can open and close the opening 18 below the dust collecting filter 5 is formed.
  • the circulating air passage shutter 23 is for adjusting the amount of circulating air returning to the dust collecting filter 5.
  • the hypochlorous acid blowing shutter 22 is formed of at least one flat plate having a substantially rectangular shape so as to overlap the hypochlorous acid blowing port 21 having a substantially rectangular shape. Then, it is rotatably arranged in the housing 2 with one side as an axis. A stepping motor (not shown) is connected to this shaft, and opening/closing is controlled by the rotation amount of the stepping motor.
  • a handle for opening/closing may be formed and the opening/closing may be performed manually from the outside of the housing 2.
  • the circulating air passage shutter 23 also has a structure formed like a rotatable flat plate like the hypochlorous acid blowing shutter 22.
  • the circulating air duct shutter 23 is arranged parallel to the opening 18 so that it can be effectively operated in the limited space inside the housing 2, and is supported by two opposite sides of the flat plate to be supported on one axis. You may make it open and close by sliding.
  • FIG. 4A shows a state in which the hypochlorous acid outlet 21 is opened, the opening 18 is closed, and hypochlorous acid is discharged near the floor surface. Since the hypochlorous acid blowing shutter 22 is provided at the hypochlorous acid blowing port 21 and is opened and closed, the hypochlorous acid can be released only when necessary.
  • FIG. 4B shows a state in which the hypochlorous acid outlet 21 is closed, the opening 18 is opened, and circulation to the dust collecting filter 5 is performed.
  • the configuration of the air purifying apparatus 1 according to the first embodiment is a combination of both the configuration of the second embodiment shown in FIGS. 3A and 3B and the configuration of the third embodiment shown in FIGS. 4A and 4B. May be Further, it is preferable to install an electronic control device in which a microcomputer (microcontroller) or the like is programmed in advance so that these operation controls can be carried out automatically, because the convenience is further improved.
  • a microcomputer microcontroller
  • the air purifying device 1B that can sterilize the indoor air and prevent secondary pollution due to re-scattering of microorganisms.
  • a person in the target area in the room where the air purification device 1B is installed) can prevent infection of microorganisms that may affect the human body through the air.
  • the air purifying device 1 including the sterilizing unit 8 that sterilizes the air that has passed through the dust collecting filter 5 has been described.
  • the air purifying device 31 including the deodorizing unit 38 that deodorizes the air that has passed through the dust collecting filter 5 instead of the sterilizing unit 8 is described. explain. Note that, for ease of understanding, the same components as those in the first to third embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.
  • FIG. 5 is a schematic diagram showing the internal structure of the air purification device 31 according to the fourth embodiment.
  • the air purifier 31 has a tray 7A for storing the hypochlorous acid aqueous solution for deodorization, which is disposed below the dust collection filter 5 (below the installed state of the air purifier 31).
  • the deodorizing portion 38 is formed in the tray 7A.
  • the deodorizing unit 38 removes the odorous components contained in the air that has passed through the dust collecting filter 5 by bringing them into gas-liquid contact with an aqueous solution of hypochlorous acid.
  • the lower discharge port 11 of the blower unit 9 communicates with the tray 7A and the deodorizing unit 38, and further with the upstream side of the dust collecting filter 5.
  • the air purifying device 31 like the air purifying device 1 according to the first embodiment, the air sucked into the housing 2 through the suction port 3 passes through the dust collecting filter 5 and is blown out through the blowing port 4. A clean air passage 12 is provided. Further, the air purifying device 31 supplies the purifying air passage 13 ⁇ /b>A that supplies the air that has passed through the dust collecting filter 5 inside the housing 2 to the upstream side of the dust collecting filter 5 after further passing through the deodorizing section 38. Equipped with. In order to deodorize the air, it is important to ensure that the air passing through the deodorizing section 38 comes into contact with the hypochlorous acid aqueous solution.
  • the deodorizing section 38 has a gas-liquid contact section 39 and a water circulation section 40 for supplying hypochlorous acid water to the gas-liquid contact section 39.
  • the gas-liquid contact portion 39 is a porous body arranged so as to block the purification air passage 13A in the tray 7A.
  • FIG. 6A is a schematic rear view showing the configuration of the deodorizing unit 38.
  • the water circulation unit 40 includes a pump 41 for pumping the hypochlorous acid aqueous solution in the tray 7A, a pipe 42 for moving the hypochlorous acid aqueous solution above the gas-liquid contacting unit 39, and a gas-liquid contacting unit 39 from above at the end of the pipe 42. It has a dropping part 43 for dropping a hypochlorous acid aqueous solution.
  • FIG. 6B is an enlarged schematic view of the A cross section in FIG. 6A.
  • the dripping portion 43 is provided above the gas-liquid contact portion 39 so as to be separated therefrom.
  • the drip unit 43 is provided with openings at appropriate intervals so that the pumped hypochlorous acid aqueous solution flows down uniformly.
  • hypochlorous acid aqueous solution is supplied to the gas-liquid contact portion 39 from above.
  • the gas-liquid contact portion 39 uses a multi-layered body having a void 44 (see FIG. 7B) penetrating in the direction of air flow, so that the hypochlorous acid aqueous solution supplied from the dropping portion 43 runs along the surface of the void 44. To form a water film. This makes it easier for the air passing through the voids 44 to come into contact with the hypochlorous acid aqueous solution.
  • the gas-liquid contact portion 39 is arranged so as to block the purification air passage 13A so that the air can efficiently contact the hypochlorous acid aqueous solution, and the air flow flows inside the void 44.
  • the absorption efficiency of the odorous component with respect to the aqueous solution of hypochlorous acid depends on the time during which the air contacts the water film. Therefore, in the gas-liquid contact portion 39, by making the length of the void 44 penetrating the gas-liquid contact portion 39 in the air flow direction a certain length or more, a long contact time can be obtained and deodorization can be efficiently performed. ..
  • the gas-liquid contact portion 39 has a three-dimensional shape because it can increase the contact time between the hypochlorous acid aqueous solution and air.
  • the gas-liquid contact portion 39 is, for example, a sponge-like thin plate having a property of absorbing water, formed on a corrugated plate, and further laminated with the plate to form a void 44.
  • a cylindrical shape or a shape in which a plurality of them are combined may be considered.
  • a multi-layer structure of corrugated sheets is preferable.
  • FIG. 7A is a schematic diagram showing an example of the structure of the gas-liquid contact portion 39.
  • FIG. 7A shows a structure in which the gas-liquid contact portion 39 having a multi-layer structure in which a corrugated plate and a flat plate are combined is viewed from the front.
  • FIG. 7B is an enlarged schematic view of the gas-liquid contact portion 39.
  • the corrugated plate-shaped multilayer structure is arranged in the purifying air passage 13A so that the opening surface 45 faces the airflow and the airflow flows along the surface of the corrugated plate. In this way, it is possible to form the gap 44 penetrating in the gas-liquid contact portion 39 in the air flow direction.
  • a material that is less reactive to hypochlorous acid water that is, a material that is less likely to be deteriorated by an aqueous solution of hypochlorous acid is used.
  • polyolefin resin polyethylene resin, polypropylene resin, etc.
  • PET polyethylene terephthalate resin
  • vinyl chloride resin vinyl chloride resin
  • fluorine resin PTFE, PFA, ETFE, etc.
  • cellulose material or ceramic material
  • polyester is used as an example of the material forming the gas-liquid contact portion 39.
  • the material can be selected from forming a fine fibrous material into a flat plate shape, thinly cutting a fixed fiber in three dimensions, or using a three-dimensional woven fabric, knitting, foam material, or the like. ..
  • the tray 7A is positioned directly below the surface of the dust collecting filter 5 on the upstream side, that is, directly below the suction surface 17.
  • an opening 18 is formed in the upper portion of the tray 7A at a position adjacent to the suction surface 17 of the dust collecting filter 5 on the downstream side of the deodorizing portion 38. That is, in the dust collecting filter 5, when viewed from a direction (upper side in FIG. 5) orthogonal to the passing direction of air in the dust collecting filter 5, the suction surface 17, which is the surface on the upstream side of the dust collecting filter 5, is the tray. It is arranged so as to be located in the opening of 7A.
  • the tray 7A has a substantially box shape with an open upper surface, and is placed at the bottom of the housing 2 as a structure capable of storing a hypochlorous acid aqueous solution.
  • the tray 7A be slidably attached to and detached from the housing 2 in the horizontal direction.
  • the air purification device 31 can collect bacteria and viruses contained in the air taken in from the room with the dust collection filter 5, and can remove the odorous component in the air by the gas-liquid contact portion 39. .. Therefore, according to the air purifying device 31, it is possible to supply the air whose odor is reduced and the cleanliness is enhanced. Further, in the deodorizing section 38, it is possible to volatilize hypochlorous acid from the hypochlorous acid aqueous solution by flowing air into the gap 44. A certain amount of hypochlorous acid is continuously volatilized in the passing air, and hypochlorous acid is released downstream. The amount of volatilized hypochlorous acid can be adjusted according to the concentration of the hypochlorous acid aqueous solution in the tray 7A.
  • the surface of the dust collection filter 5 can be sterilized by the action of hypochlorous acid volatilized from the gas-liquid contact portion 39.
  • the hypochlorous acid water supply unit 15 generates an aqueous solution of hypochlorous acid having a predetermined concentration.
  • the gap of the gas-liquid contact unit 39 is obtained.
  • An aqueous solution of hypochlorous acid is attached to the surface of 44.
  • the contaminated air (indoor air) sucked from the suction port 3 is collected by the dust collecting filter 5.
  • the clean air that has passed through the dust collecting filter 5 is supplied to the room through the air clean air passage 12 from the outlet 4 and is circulated through the purifying air passage 13A.
  • the air from which the dust has been removed after passing through the dust collecting filter 5 comes into contact with the hypochlorous acid aqueous solution at the gas-liquid contact portion 39 when passing through the purification air passage 13A, and the contained odorous components are removed. ..
  • the hypochlorous acid is volatilized according to the wind speed, and the air containing the hypochlorous acid is merged with the front stage (upstream side) of the dust collection filter 5.
  • the hypochlorous acid uniformly acts on not only the indoor air but also the dust collection filter 5, and continuously acts on the bacteria and viruses collected on the dust collection filter 5 to remove the bacteria. You can
  • the suction surface 17 which is the upstream side of the dust collecting filter 5 is a tray. It is arranged so as to be located in the opening of 7A. This facilitates the volatilized hypochlorous acid to directly act on the suction surface 17 of the adjacent dust collection filter 5. Further, dust or dust falling from the surface of the dust collecting filter 5 can be collected in the hypochlorous acid aqueous solution of the tray 7A and strongly sterilized by the action of hypochlorous acid to prevent re-scattering.
  • the fine particles such as bacteria and viruses collected and accumulated on the suction surface 17 of the dust collecting filter 5 fall below even if they drop due to shock, vibration, or natural separation. It is collected in the tray 7A and sterilized with a hypochlorous acid aqueous solution.
  • the gas-liquid contact portion 39 for removing the odor component in the air is arranged inside the purification air passage 13A and the gas-liquid contact portion 39 is ventilated with air, the gas-liquid contact portion 39
  • the odorous component comes into contact with the water film formed inside, and the odorous component is absorbed. Furthermore, the water that has absorbed the odorous components naturally flows down and is collected in the tray 7A, so that the odorous components can be prevented from being re-released.
  • the deodorizing effect is exhibited by these two effects.
  • hypochlorous acid molecules are volatilized from the hypochlorous acid aqueous solution adhering to the gas-liquid contact portion 39 and uniformly contact the surface of the dust collecting filter 5 to sterilize the dust collecting filter 5.
  • the air purifying device 31 that can sterilize the indoor air and prevent secondary contamination of microorganisms due to re-scattering.
  • a person in the target area in the room where the air purification device 31 is installed) can prevent infection of microorganisms that may affect the human body through the air.
  • the air purification device of the present disclosure is expected to be utilized as an air purification device for sterilizing, sterilizing, disinfecting or deodorizing households, offices, public spaces and the like.

Abstract

This air purification device includes, inside a casing, a dust collecting filter, a tray, and a purification unit. The dust collecting filter allows air to pass therethrough and removes microparticles. The tray is disposed below the dust collecting filter and stores an aqueous hypochlorous acid solution for sterilization or deodorization. The purification unit is formed inside the tray, sterilizes or deodorizes the air passed through the dust collecting filter, and is formed so as to be able to allow the air to pass, via an opening of the tray, to the upstream side of an air passing direction in the dust collecting filter. The opening is located on a top surface of the tray. The dust collecting filter is arranged such that the upstream side surface of the dust collecting filter is located inside the opening when viewed from a direction orthogonal to the air passing direction in the dust collecting filter.

Description

空気浄化装置Air purifier
　本開示は、空気中の細菌、ウイルス、臭いなどの除去を行う空気浄化装置に関するものである。 The present disclosure relates to an air purification device that removes bacteria, viruses, odors, etc. in the air.
　従来、筐体内の風路上にマイナスイオンやオゾンなどの殺菌物質を発生するとされるイオン発生器を設け、清浄空気を筐体内に循環させて、集塵フィルタの上流側に戻すクリーニング運転が可能な空気清浄機が知られている（例えば特許文献１）。この空気清浄機によれば、発生させた殺菌物質によって、筐体内の集塵フィルタや送風ファン、本体ケース内面に付着する細菌や臭気成分を取り除くことができる。 Conventionally, it is possible to perform a cleaning operation in which an ion generator, which is said to generate sterilizing substances such as negative ions and ozone, is provided on the air passage in the housing, and clean air is circulated in the housing and returned to the upstream side of the dust collecting filter. Air cleaners are known (for example, Patent Document 1). With this air purifier, it is possible to remove bacteria and odorous components adhering to the dust collection filter in the housing, the blower fan, and the inner surface of the main body case by the generated sterilizing substance.
特開２００５－４６８００号公報JP 2005-46800 A
　このような従来の空気清浄機によれば、筐体内に循環させた殺菌物質により、集塵フィルタ上の細菌などをある程度抑制する効果が得られる。しかしながら、集塵フィルタ上に捕集された粉塵や細菌、ウイルスに対する対処が十分でない場合に、残った粉塵や細菌、ウイルスが、筐体から再飛散することによる二次汚染のリスクが存在してしまうという課題がある。また、集塵フィルタの表面に堆積した粉塵は、振動や運転停止時に集塵フィルタから落下して再飛散してしまうため、殺菌物質で殺菌していたとしても、集塵フィルタから落ちて床面に落下し、室内を汚してしまうという課題もある。 According to such a conventional air purifier, the sterilizing substance circulated in the housing has an effect of suppressing bacteria and the like on the dust collecting filter to some extent. However, if the dust, bacteria, and viruses trapped on the dust collection filter are not adequately dealt with, there is a risk of secondary contamination due to re-scattering of the remaining dust, bacteria, and viruses from the housing. There is a problem that it will end. In addition, the dust accumulated on the surface of the dust collection filter falls from the dust collection filter when it is vibrated or is shut down and re-scatters. There is also the problem that it will fall into the interior and stain the interior of the room.
　そこで、フィルタ上に捕集した粉塵や細菌等の再飛散を、より確実に防ぐことができる空気浄化装置を提供することを目的とする。 Therefore, it is an object of the present invention to provide an air purification device that can more surely prevent the dust and bacteria collected on the filter from re-scattering.
　そして、本開示に係る空気浄化装置は、集塵フィルタと、トレイと、浄化部と、を筐体内に備える。集塵フィルタは、空気を通過させて微粒子を除去する。トレイは、集塵フィルタの下方に配置され、除菌または脱臭を行うための次亜塩素酸水溶液を貯留する。浄化部は、トレイ内に形成され、集塵フィルタを通過させた空気を除菌または脱臭し、トレイの開口部を介して集塵古田における空気の通過方向の上流側へ通過可能に形成されている。そして、開口部はトレイの上面に位置している。集塵フィルタは、集塵フィルタにおける空気の通過方向に直交する方向から見た場合において、集塵フィルタにおける上流側の面が開口部内に配置されている。 Then, the air purification device according to the present disclosure includes a dust collection filter, a tray, and a purification unit in the housing. The dust collecting filter removes fine particles by passing air. The tray is arranged below the dust collecting filter and stores the hypochlorous acid aqueous solution for sterilizing or deodorizing. The purifying unit is formed in the tray to disinfect or deodorize the air that has passed through the dust collecting filter, and is formed so as to be able to pass through the opening of the tray to the upstream side in the air passing direction in the dust collecting Furuta. There is. The opening is located on the upper surface of the tray. In the dust collecting filter, when viewed from a direction orthogonal to the air passage direction in the dust collecting filter, the upstream surface of the dust collecting filter is arranged in the opening.
　本開示に係る空気浄化装置によれば、トレイは、集塵フィルタの下方に配置され、集塵フィルタは、集塵フィルタにおける上流側の面がトレイの開口部内に位置するように配置されているため、集塵フィルタから落下する微粒子をトレイ内に捕集することができる。トレイには、次亜塩素酸水溶液が貯留されているため、落下した微粒子を強力に除菌、抑制することができ、再飛散による二次汚染をより確実に防ぐことができる。 According to the air purification apparatus of the present disclosure, the tray is arranged below the dust collecting filter, and the dust collecting filter is arranged such that the upstream surface of the dust collecting filter is located in the opening of the tray. Therefore, the particles falling from the dust collecting filter can be collected in the tray. Since the aqueous solution of hypochlorous acid is stored in the tray, it is possible to strongly remove and control the particles that have fallen, and it is possible to more reliably prevent secondary contamination due to re-dispersion.
図１は、本開示の実施の形態１に係る空気浄化装置の内部構造を示す側方概略図である。FIG. 1 is a schematic side view showing an internal structure of an air purification device according to Embodiment 1 of the present disclosure. 図２は、同空気浄化装置の除菌部の構成を示す背面概略図である。FIG. 2 is a schematic rear view showing the structure of the sterilization unit of the air purification apparatus. 図３Ａは、本開示の実施の形態２に係る空気浄化装置の室内浄化時の動作を示す側方概略図である。FIG. 3A is a schematic side view showing the operation of the air purification device according to Embodiment 2 of the present disclosure during indoor purification. 図３Ｂ同空気浄化装置の内部循環時の動作を示す側方概略図である。FIG. 3B is a schematic side view showing the operation of the air purification device during internal circulation. 図４Ａは、本開示の実施の形態３に係る空気浄化装置の室内への放出動作を示す側方概略図である。FIG. 4A is a schematic side view showing an indoor discharge operation of the air purification device according to Embodiment 3 of the present disclosure. 図４Ｂは、同空気浄化装置の内部循環と上方吹き出し動作を示す側方概略図である。FIG. 4B is a schematic side view showing the internal circulation and the upward blowing operation of the air purifier. 図５は、本開示の実施の形態４に係る空気浄化装置の内部構造を示す側方概略図である。FIG. 5 is a schematic side view showing the internal structure of the air purification device according to Embodiment 4 of the present disclosure. 図６Ａは、同空気浄化装置の脱臭部の構成を示す背面概略図である。FIG. 6A is a schematic rear view showing the configuration of the deodorizing unit of the air purifier. 図６Ｂは、同空気浄化装置の気液接触部の断面構造を示す概略図である。FIG. 6B is a schematic diagram showing a cross-sectional structure of a gas-liquid contact portion of the air purification device. 図７Ａは、同空気浄化装置の気液接触部における構造の一例を示す概略図である。FIG. 7A is a schematic view showing an example of a structure in a gas-liquid contact portion of the air purification device. 図７Ｂは、同空気浄化装置における次亜塩素酸水溶液の流れを示す図である。FIG. 7B is a diagram showing a flow of the hypochlorous acid aqueous solution in the air purifier.
　本開示に係る空気浄化装置は、集塵フィルタと、トレイと、浄化部と、を筐体内に備える。集塵フィルタは、空気を通過させて微粒子を除去する。トレイは、集塵フィルタの下方に配置され、除菌または脱臭を行うための次亜塩素酸水溶液を貯留する。浄化部は、トレイ内に形成され、集塵フィルタを通過させた空気を除菌または脱臭し、トレイの開口部を介して、集塵フィルタにおける空気の通過方向の上流側へ通過可能に形成されている。そして、開口部はトレイの上面に位置している。集塵フィルタは、集塵フィルタにおける空気の通過方向に直交する方向から見た場合において、集塵フィルタにおける上流側の面が開口部内に位置するように、配置されている。 The air purification device according to the present disclosure includes a dust collection filter, a tray, and a purification unit in the housing. The dust collecting filter removes fine particles by passing air. The tray is arranged below the dust collecting filter and stores the hypochlorous acid aqueous solution for sterilizing or deodorizing. The purification unit is formed in the tray, disinfects or deodorizes the air that has passed through the dust collecting filter, and is formed so as to be able to pass through the opening of the tray to the upstream side in the air passing direction of the dust collecting filter. ing. The opening is located on the upper surface of the tray. The dust collecting filter is arranged such that the upstream surface of the dust collecting filter is located inside the opening when viewed from a direction orthogonal to the air passage direction of the dust collecting filter.
　これにより、浄化部から集塵フィルタの上流側へ通過する空気には、次亜塩素酸が含まれるため集塵フィルタ上の細菌やウイルスなどの微粒子は直ちに除菌されることとなる。さらに、次亜塩素酸は、集塵フィルタ上や筐体内に吸着した臭気成分を分解する作用があるため、筐体内から臭気が再放出することを防ぐという副次効果も得られる。また、次亜塩素酸は、水溶液中で長期間保存されるため、空気浄化装置が停止中でも継続的に次亜塩素酸が自然に揮発、放出され、作用を与え続けることができる。また、集塵フィルタの上流側の面がトレイの開口部内に位置するように配置されているため、停止中に集塵フィルタに堆積した微粒子が落下した場合でも、微粒子をトレイに確実に受け止めることができ、筐体外に流出、飛散させることを防ぐことができる。トレイ内には、高い除菌作用をもつ次亜塩素酸水溶液を貯留しているため、落下した細菌やウイルスなどの微粒子はこの次亜塩素酸の作用によって失活させることができる。 Due to this, the air that passes from the purification section to the upstream side of the dust collection filter contains hypochlorous acid, so that the microparticles such as bacteria and viruses on the dust collection filter will be immediately sterilized. Further, since hypochlorous acid has a function of decomposing the odorous component adsorbed on the dust collecting filter or in the housing, a secondary effect of preventing the odor from being re-emitted from the housing can be obtained. Further, since hypochlorous acid is stored in an aqueous solution for a long period of time, hypochlorous acid is continuously volatilized and released spontaneously even when the air purifying apparatus is stopped, and the action can be continued. Also, since the upstream surface of the dust collection filter is located inside the opening of the tray, even if the particulates deposited on the dust collection filter fall during the stop, the particulates can be reliably received by the tray. Therefore, it can be prevented from flowing out and scattering outside the housing. Since the hypochlorous acid aqueous solution having a high disinfecting action is stored in the tray, the microparticles such as bacteria and viruses that have fallen can be inactivated by the action of this hypochlorous acid.
　また、空気浄化装置の浄化部は、次亜塩素酸により除菌するものであり、筐体は、吸い込み口と吹き出し口とを有する。空気浄化装置はさらに、送風部を筐体に備える。送風部は、少なくとも２方向に吐出口を有し、吸い込み口から吸い込み、集塵フィルタを通過さえた空気を吹き出し口側と浄化部側とへ吐出させる。また、空気浄化部は、吹き出し口を開閉可能な吹き出しシャッターを備える。そして、吹き出しシャッターにより吹き出し口を閉止して、送風部により浄化部側へと吐出された集塵フィルタを通過させた空気を、浄化部から開口部を介して集塵フィルタ―における上流側へと通過さえて筐体内で循環させる。 Also, the purification section of the air purification device is for sterilizing with hypochlorous acid, and the housing has an inlet and an outlet. The air purification device further includes a blower unit in the housing. The air blower has discharge ports in at least two directions, and sucks air that has been sucked in through the suction port and passed through the dust collecting filter and discharged to the blowout port side and the purification unit side. Further, the air purification unit includes a blowing shutter that can open and close the blowing port. Then, the blowout shutter closes the blowout port, and the air that has passed through the dust collection filter discharged toward the purification unit by the blower unit is passed from the purification unit to the upstream side of the dust collection filter through the opening. Circulate in the enclosure even through.
　これにより、吹き出し口を閉止することで、筐体外に空気を排出せず筐体内で循環する風量を増加させることができるので、風量に応じて集塵フィルタに作用させる次亜塩素酸の量を増加させることができる。そのため、この空気清浄装置によれば、真菌や芽胞のような抵抗性が高い微生物であってもより確実に除菌することができる。 With this, by closing the outlet, it is possible to increase the amount of air circulated in the housing without discharging the air to the outside of the housing, so that the amount of hypochlorous acid that acts on the dust collecting filter can be adjusted according to the amount of air. Can be increased. Therefore, according to this air cleaning device, even highly resistant microorganisms such as fungi and spores can be more reliably sterilized.
　また、空気浄化装置はさらに、次亜塩素酸吹き出し口と、次亜塩素酸吹き出しシャッターと、循環風路シャッターと、を備える。次亜塩素酸吹き出し口は、筐体の、室内に面する前面下部に形成され、浄化部から浄化部を通過させた空気を吹き出す。次亜塩素酸吹き出しシャッターは、次亜塩素酸吹き出し口の開度を調整可能である。循環風路シャッターは、開口部の開度を調整可能である。そして、空気浄化装置は、循環風路シャッターにより開口部の一部を閉止し、かつ次亜塩素酸吹き出しシャッターにより次亜塩素酸吹き出し口の少なくとも一部を開放し、浄化部を通過させた空気の一部を室内に放出する。 Moreover, the air purification device further includes a hypochlorous acid outlet, a hypochlorous acid outlet shutter, and a circulation air passage shutter. The hypochlorous acid outlet is formed in the lower part of the front surface of the housing facing the room, and blows out the air that has passed through the purification unit from the purification unit. The opening of the hypochlorous acid blowing outlet can be adjusted with the hypochlorous acid blowing shutter. The circulating air passage shutter can adjust the opening degree of the opening. Then, the air purifying device closes a part of the opening by the circulating air passage shutter, and opens at least a part of the hypochlorous acid blowing outlet by the hypochlorous acid blowing shutter, and the air passed through the purifying unit. A part of is released indoors.
　これにより、筐体内や集塵フィルタの除菌だけでなく、次亜塩素酸吹き出し口を開放することで、放出した空気に含まれる次亜塩素酸によって筐体から離れた室内の表面、特に床面に落下して室内の汚染源となる床面の粉塵や空気を除菌することができる。 This not only removes bacteria in the housing and dust collection filter, but also opens the hypochlorous acid outlet to allow the surface of the room, especially the floor, to be separated from the housing by the hypochlorous acid contained in the released air. It is possible to sterilize dust and air on the floor surface that falls on the surface and becomes a source of indoor pollution.
　また、空気浄化装置の浄化部は、集塵フィルタを通過させた空気を次亜塩素酸水溶液に気液接触させて臭気成分の除去をする。 Also, the purifying section of the air purifier removes odorous components by bringing the air that has passed through the dust collection filter into gas-liquid contact with the hypochlorous acid aqueous solution.
　これにより、浄化部に空気を通風させることで、臭気成分を除去することができる。また、上述のように、浄化部から集塵フィルタの上流側へ通過する空気には、次亜塩素酸が含まれるため集塵フィルタ上の細菌やウイルスなどの微粒子は直ちに除菌されることとなる。つまり、空気中の微生物などのエアロゾルを集塵、殺菌するだけでなく、空気中の臭気成分も脱臭することができるため、空気の浄化効率の高い空気浄化装置とすることができる。 By doing this, odor components can be removed by ventilating the purification section. Further, as described above, since the air passing from the purification unit to the upstream side of the dust collecting filter contains hypochlorous acid, fine particles such as bacteria and viruses on the dust collecting filter are immediately sterilized. Become. That is, not only dust and sterilization of aerosols such as microorganisms in the air but also deodorization of odorous components in the air can be performed, so that an air purification device with high air purification efficiency can be obtained.
　以下、本開示の実施の形態について図面を参照しながら説明する。 Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.
　（実施の形態１）
　まず、図１および図２を用いて、実施の形態１に係る空気浄化装置１について説明する。 (Embodiment 1)
First, the air purification apparatus 1 according to the first embodiment will be described with reference to FIGS. 1 and 2.
　図１は、実施の形態１に係る空気浄化装置１の内部構造を示す側方概略図である。 1 is a schematic side view showing the internal structure of the air purification device 1 according to the first embodiment.
　尚、説明の都合上、以下では、次のように記載する場合がある。 Note that, for convenience of explanation, the following may be described as follows.
　即ち、空気浄化装置１内の空気の流れの上流側を単に「上流側」と、空気浄化装置１内の空気の流れの下流側を単に「下流側」と記載する場合がある。また、図１に示すように空気浄化装置１が設置された状態での垂直方向を上下方向として「上側」、「下側」と記載する場合がある。また同様に、図１に示すように空気浄化装置１が設置された状態での垂直方向を上下方向として、空気浄化装置１の上側の面を「上面」と記載する場合がある。尚、これらの記載は、後述する実施の形態２～４（空気浄化装置１Ａ、１Ｂ、３１）においても同様である。 That is, the upstream side of the air flow in the air purification device 1 may be simply referred to as “upstream side”, and the downstream side of the air flow in the air purification device 1 may be simply referred to as “downstream side”. Further, as shown in FIG. 1, the vertical direction in the state where the air purification device 1 is installed may be referred to as “upper side” and “lower side” as the vertical direction. Similarly, as shown in FIG. 1, the vertical direction with the air purification device 1 installed may be referred to as the vertical direction, and the upper surface of the air purification device 1 may be referred to as the “upper surface”. Note that these descriptions also apply to Embodiments 2 to 4 ( air purification devices 1A, 1B, 31) described later.
　また、実施の形態１では、本開示の浄化部を備える空気浄化装置の一例として、集塵フィルタ５を通過させた空気を除菌する除菌部８を備える空気浄化装置１を説明する。 In addition, in the first embodiment, as an example of the air purification apparatus including the purification unit of the present disclosure, the air purification apparatus 1 including the sterilization unit 8 that sterilizes the air that has passed through the dust collection filter 5 will be described.
　図１に示すように、空気浄化装置１は、略箱形状の筐体２を備え、筐体２は、吸い込み口３と吹き出し口４とを有する。具体的には、筐体２の表面に、室内空気を吸い込む略四角形状の吸い込み口３を設け、筐体２の上面（図１において上面）に、浄化された空気を吹き出す略四角形状の吹き出し口４を設けている。 As shown in FIG. 1, the air purification device 1 includes a substantially box-shaped housing 2, and the housing 2 has a suction port 3 and a blowing port 4. Specifically, the surface of the housing 2 is provided with a substantially quadrangular suction port 3 for sucking indoor air, and the top surface of the housing 2 (the upper surface in FIG. 1) is blown out into a substantially quadrangular shape. A mouth 4 is provided.
　また、空気浄化装置１は、筐体２の内に、特に、集塵フィルタ５と、トレイ７と、除菌部８と、送風部９とを備える。 Further, the air purifying device 1 includes, in the housing 2, a dust collecting filter 5, a tray 7, a sterilizing unit 8, and a blower unit 9 in particular.
　空気浄化装置１は、空気を通過させて微粒子を除去する略四角形状の集塵フィルタ５を、空気の流れる方向に対し垂直に配設し、これにより空気清浄を行なう。集塵フィルタ５は、筐体２に設けた支持枠６に密着するように固定され、吸引する空気が集塵フィルタ５の周囲の隙間から漏れないようにする。 The air purification device 1 arranges a substantially quadrangular dust collecting filter 5 that allows air to pass therethrough and removes fine particles so as to be perpendicular to the direction of air flow, thereby performing air purification. The dust collection filter 5 is fixed so as to be in close contact with the support frame 6 provided in the housing 2, so that sucked air does not leak from the gap around the dust collection filter 5.
　また、集塵フィルタ５の下方（空気浄化装置１の設置状態における下方）に、除菌を行うための次亜塩素酸水溶液を貯留するトレイ７が配置され、トレイ７内に除菌部８が形成される。除菌部８は、集塵フィルタ５を通過させた空気に次亜塩素酸を含有させて除菌し、集塵フィルタ５の上流側へ通過可能に形成される。 Further, below the dust collecting filter 5 (below in the installed state of the air purifying apparatus 1), a tray 7 for storing an aqueous solution of hypochlorous acid for performing sterilization is arranged, and a sterilizing unit 8 is provided in the tray 7. It is formed. The sterilization unit 8 is formed so that the air that has passed through the dust collecting filter 5 contains hypochlorous acid to sterilize the air and can pass to the upstream side of the dust collecting filter 5.
　空気の送風を行なう送風部９は、集塵フィルタ５の下流側に隣接するように配設されている。 A blower unit 9 that blows air is arranged adjacent to the downstream side of the dust collection filter 5.
　送風部９は、少なくとも２方向に空気を吐出する吐出口を有し、吸い込み口３から吸い込み、集塵フィルタ５に通過させた空気を、吹き出し口４側と除菌部８側へと吐出させる。送風部９は、送風部９の出口側に主として上側（吹き出し口４側）に吐出する上側吐出口１０と、副として下側（除菌部８側）に吐出する下側吐出口１１とを有する。 The blower unit 9 has a discharge port for discharging air in at least two directions, and the air sucked from the suction port 3 and passed through the dust collecting filter 5 is discharged to the discharge port 4 side and the sterilization unit 8 side. .. The blower unit 9 has an upper discharge port 10 that discharges mainly to the upper side (blowout port 4 side) on the outlet side of the blower unit 9 and a lower discharge port 11 that discharges to the lower side (the sterilization unit 8 side) as a subsidiary. Have.
　送風部９の上側吐出口１０は、筐体２の上面に設けた吹き出し口４へと連通するものである。下側吐出口１１は、トレイ７および除菌部８と連通し、さらに集塵フィルタ５の上流側へと連通するものである。 The upper outlet 10 of the blower unit 9 communicates with the outlet 4 provided on the upper surface of the housing 2. The lower discharge port 11 communicates with the tray 7 and the sterilization unit 8 and further with the upstream side of the dust collecting filter 5.
　そして、空気浄化装置１は、吸い込み口３から筐体２内に吸い込んだ空気を集塵フィルタ５に通過させて、吹き出し口４から吹き出す空気清浄風路１２を備える。また、空気浄化装置１は、集塵フィルタ５を通過させた空気を、さらに除菌部８を通過させたのち、集塵フィルタ５の上流側へ供給する浄化風路１３を備える。 The air purifying device 1 is provided with an air purifying air passage 12 that allows the air sucked into the housing 2 from the suction port 3 to pass through the dust collecting filter 5 and is blown out from the blowing port 4. The air purification device 1 also includes a purification air passage 13 that supplies the air that has passed through the dust collecting filter 5 to the upstream side of the dust collecting filter 5 after further passing through the sterilization unit 8.
　浄化風路１３に設けられた除菌部８は、次亜塩素酸水溶液を貯留するトレイ７の中に、次亜塩素酸水溶液に含浸させるように設置される。次亜塩素酸を放出するための除菌部８は、次亜塩素酸水をミスト状に噴霧、あるいはガス状に揮発させるものであり、実施の形態１においては一例として、次亜塩素酸水をガス状に揮発させるものとして説明する。除菌部８は、図２に示すように、揮発部１４と、次亜塩素酸水供給部１５と、排水部１６とを有する。 The sterilization unit 8 provided in the purification air passage 13 is installed in the tray 7 for storing the hypochlorous acid aqueous solution so as to be impregnated with the hypochlorous acid aqueous solution. The sterilization unit 8 for releasing hypochlorous acid is for spraying hypochlorous acid water in the form of mist or vaporizing it in the form of gas. In the first embodiment, as an example, hypochlorous acid water is used. Will be described as gasified. As shown in FIG. 2, the sterilization unit 8 has a volatilization unit 14, a hypochlorous acid water supply unit 15, and a drainage unit 16.
　ここで、揮発部１４は、次亜塩素酸水溶液を吸い上げ、通過する空気中に連続的に一定量の次亜塩素酸を揮発させて浄化風路１３に次亜塩素酸を放出するためのものであり、表面を浄化風路１３に接するように形成される。トレイ７の次亜塩素酸水溶液の濃度に応じて、揮発する次亜塩素酸の量を調整できるようにする。さらに、トレイ７に、所定濃度の次亜塩素酸水溶液を供給するための次亜塩素酸水供給部１５を設ける。次亜塩素酸水供給部１５によって、トレイ７内の次亜塩素酸水溶液を一定水位に保ちながら供給できるようにする。さらに、トレイ７の次亜塩素酸水溶液を排水するための排水部１６をトレイ７の下方に形成する。 Here, the volatilization unit 14 is for sucking up the aqueous hypochlorous acid solution and continuously volatilizing a certain amount of hypochlorous acid in the passing air to release the hypochlorous acid to the purification air passage 13. And is formed so that the surface is in contact with the purification air passage 13. The amount of volatilized hypochlorous acid can be adjusted according to the concentration of the aqueous hypochlorous acid solution in the tray 7. Further, the tray 7 is provided with a hypochlorous acid water supply unit 15 for supplying a hypochlorous acid aqueous solution having a predetermined concentration. The hypochlorous acid water supply unit 15 enables the hypochlorous acid aqueous solution in the tray 7 to be supplied while maintaining a constant water level. Further, a drainage portion 16 for draining the aqueous solution of hypochlorous acid in the tray 7 is formed below the tray 7.
　トレイ７は、集塵フィルタ５の下方に配置する。つまり、除菌部８は集塵フィルタ５の下方に配置したトレイ７内に形成されている。 The tray 7 is placed below the dust collecting filter 5. That is, the sterilization unit 8 is formed in the tray 7 arranged below the dust collecting filter 5.
　さらに、集塵フィルタ５の上流側の面の直下、すなわち吸い込み面１７の直下に、トレイ７が位置するようにしている。具体的には、トレイ７の上部には、除菌部８よりも下流側において集塵フィルタ５の吸い込み面１７に隣接した位置に開口部１８が形成されている。つまり、集塵フィルタ５は、集塵フィルタ５における空気の通過方向に直交する方向（図１では上方）から見た場合において、集塵フィルタ５の上流側の面である吸い込み面１７が、トレイ７の開口部内に位置するように配置される。これにより、揮発した次亜塩素酸が、近接する集塵フィルタ５の吸い込み面１７に直接作用しやすくなるとともに、集塵フィルタ５の表面から落下した粉塵や埃などをトレイ７内の次亜塩素酸水溶液に捕集し、次亜塩素酸の作用で強力に殺菌して再飛散を防ぐことができる。 Further, the tray 7 is positioned just below the surface of the dust collecting filter 5 on the upstream side, that is, just below the suction surface 17. Specifically, an opening 18 is formed in the upper part of the tray 7 at a position adjacent to the suction surface 17 of the dust collecting filter 5 on the downstream side of the sterilization unit 8. That is, in the dust collecting filter 5, when viewed from a direction (upper side in FIG. 1) orthogonal to the air passing direction in the dust collecting filter 5, the suction surface 17 which is the upstream side of the dust collecting filter 5 is a tray. It is arranged so that it may be located in the opening of 7. As a result, the volatilized hypochlorous acid easily acts directly on the suction surface 17 of the dust collecting filter 5 which is adjacent to the dust collecting filter 5, and the dust or dust dropped from the surface of the dust collecting filter 5 is removed from the hypochlorous acid in the tray 7. It can be collected in an aqueous acid solution and strongly sterilized by the action of hypochlorous acid to prevent re-dispersion.
　また、除菌部８よりも上流側に下側吐出口１１に連通する流入口１９を形成している。流入口１９は、トレイ７の上部に設けることもできる。 In addition, an inflow port 19 communicating with the lower discharge port 11 is formed on the upstream side of the sterilization unit 8. The inflow port 19 may be provided in the upper part of the tray 7.
　また、このようにトレイ７を筐体２の下方に設けることで、水がこぼれても筐体２内の電気系統に接触しない位置関係にすることができるため好ましい。 Also, by providing the tray 7 below the housing 2 in this manner, it is possible to establish a positional relationship in which even if water is spilled, the electric system in the housing 2 is not contacted, which is preferable.
　尚、筐体２の吹き出し口４からの吹き出し風量が所定の値となるように、送風部９の風量と、空気清浄風路１２および浄化風路１３の風路断面積とを設定し、圧力損失を調整する。 The air volume of the blower unit 9 and the air passage cross-sectional areas of the air purification air passage 12 and the purification air passage 13 are set so that the air volume of the air blown from the air outlet 4 of the housing 2 becomes a predetermined value. Adjust for losses.
　浄化風路１３の内部には、次亜塩素酸を揮発する揮発部１４が形成され、揮発部１４の表面に沿って空気が通風する。次亜塩素酸水溶液からは次亜塩素酸分子が揮発しており、次亜塩素酸水溶液の表面に空気が流れると空気中に次亜塩素酸が含まれる。そのため、筐体２内を循環する空気中には次亜塩素酸が含まれることになる。この次亜塩素酸を含む空気は、集塵フィルタ５の表面に一様に接触し、集塵フィルタ５は、次亜塩素酸に連続的にさらされて除菌される。浄化風路１３は、送風部９の下側吐出口１１から集塵フィルタ５まで戻る経路である。また、浄化風路１３は、送風部９の下流側の加圧された空間と、集塵フィルタ５の手前の減圧された空間とを接続しているため、集塵フィルタ５の上流に向かって通風がされる。 A volatilization part 14 for volatilizing hypochlorous acid is formed inside the purification air passage 13, and air is ventilated along the surface of the volatilization part 14. Hypochlorous acid molecules are volatilized from the hypochlorous acid aqueous solution, and when air flows on the surface of the hypochlorous acid aqueous solution, hypochlorous acid is contained in the air. Therefore, the air circulating in the housing 2 contains hypochlorous acid. The air containing the hypochlorous acid uniformly contacts the surface of the dust collecting filter 5, and the dust collecting filter 5 is continuously exposed to the hypochlorous acid to be sterilized. The purification air passage 13 is a path that returns from the lower outlet 11 of the air blower 9 to the dust collecting filter 5. Further, since the purification air passage 13 connects the pressurized space on the downstream side of the blower unit 9 and the depressurized space in front of the dust collection filter 5, it moves toward the upstream side of the dust collection filter 5. Ventilation is provided.
　トレイ７は、上面を開口した略箱形状とし、次亜塩素酸水溶液を貯水できる構造として、筐体２の下部に配置される。トレイ７のメンテナンスをしやすくするために、例えば、筐体２から水平方向にスライドして着脱可能とすると好ましい。 The tray 7 has a substantially box-like shape with an open top surface, and is arranged at the bottom of the housing 2 as a structure capable of storing a hypochlorous acid aqueous solution. In order to facilitate the maintenance of the tray 7, for example, it is preferable that the tray 7 be slidable in the horizontal direction and detachable.
　以下では、上述した送風部９、揮発部１４、集塵フィルタ５、次亜塩素酸水供給部１５およびトレイ７について、より詳しく説明する。 In the following, the blower unit 9, the volatilization unit 14, the dust collecting filter 5, the hypochlorous acid water supply unit 15, and the tray 7 described above will be described in more detail.
　上述のように、送風部９は、筐体２の内に設けられており、集塵フィルタ５の後段（下流）に連通して接続されている。送風部９は、少なくともモーター、ファン、ケーシング、吐出口（上側吐出口１０および下側吐出口１１）を有する。送風部９の上側吐出口１０は、空気清浄風路１２に密着させて接続し、清浄化した空気は、吹き出し口４から室内へと供給される。ファンは、集塵フィルタ５の圧力損失や、空気清浄風路１２と浄化風路１３の圧力差が発生してもそれぞれに必要な風量を供給できるものがよく、遠心式のシロッコ型ファンが好ましい。 As described above, the blower unit 9 is provided inside the housing 2 and is connected to the subsequent stage (downstream) of the dust collecting filter 5 so as to communicate therewith. The blower unit 9 has at least a motor, a fan, a casing, and a discharge port (upper discharge port 10 and lower discharge port 11). The upper discharge port 10 of the blower unit 9 is connected to the air cleaning air passage 12 so as to be in close contact therewith, and the purified air is supplied from the air outlet 4 into the room. The fan is preferably one capable of supplying a necessary air volume to each of them even if the pressure loss of the dust collecting filter 5 or the pressure difference between the air purification air passage 12 and the purification air passage 13 occurs, and a centrifugal sirocco type fan is preferable. ..
　次亜塩素酸を揮発させるための揮発部１４は、上述のように、次亜塩素酸水を表面に保持して空気と接触させるものである。揮発部１４は、平板状、波状、繊維状、格子状、メッシュ状など、表面に液体を付着させることができる様々な形状、形態が考えられるが、付着水量が大きく空気と接触させやすいメッシュ状が好ましい。通気抵抗を高めないようにして、揮発部１４の表面から安定して揮発させるために、気流が沿って流れるように揮発部１４の表面を配置する。揮発量は風速に依存するため、表面を気流の方向に対して平行にすることで、気流の乱れを抑え、安定して揮発できるようになる。揮発部１４は、素材を立体形状に構成すると、揮発量を増加させることができ、より好ましい。例えば、平板を複数用いた多層構造、曲面状、円筒状、または筒状、およびそれらを複数組み合わせた形状が挙げられるが、次亜塩素酸水を安定的に表面に供給させるためには、円筒状がよい。円筒状の揮発部１４は、トレイ７内に回転自在に内蔵し、動作中に回転させることで、揮発部１４の表面に次亜塩素酸水を安定的に供給することができる。円筒形状の上側表面を、気流の向きに沿うように浄化風路１３内に配置する。 The volatile part 14 for volatilizing the hypochlorous acid holds the hypochlorous acid water on the surface and makes contact with the air, as described above. The volatilization unit 14 may have various shapes and forms such as a flat plate shape, a wavy shape, a fibrous shape, a lattice shape, and a mesh shape capable of adhering a liquid to the surface, but a mesh shape having a large amount of attached water and easily contacted with air. Is preferred. The surface of the volatilization unit 14 is arranged so that the airflow flows along it in order to stably evaporate from the surface of the volatilization unit 14 without increasing the ventilation resistance. Since the amount of volatilization depends on the wind speed, by making the surface parallel to the direction of the air flow, the turbulence of the air flow can be suppressed and stable volatilization can be achieved. It is more preferable that the volatilization unit 14 increase the volatilization amount if the material is formed into a three-dimensional shape. For example, a multilayer structure using a plurality of flat plates, a curved surface shape, a cylindrical shape, or a cylindrical shape, and a shape in which a plurality of them are combined can be mentioned. In order to stably supply hypochlorous acid water to the surface, a cylindrical shape is used. Good condition. The cylindrical volatilization unit 14 is rotatably incorporated in the tray 7, and is rotated during operation, whereby the hypochlorous acid water can be stably supplied to the surface of the volatilization unit 14. The cylindrical upper surface is arranged in the purification air passage 13 so as to be along the direction of the air flow.
　揮発部１４を構成する材料としては、次亜塩素酸水溶液に反応性の少ない材料、即ち、次亜塩素酸水溶液による劣化が少ない材料が用いられる。例えば、ポリオレフィン系樹脂（ポリエチレン樹脂、ポリプロピレン樹脂等）、ＰＥＴ（ポリエチレン・テレフタラート樹脂）、塩化ビニル樹脂、フッ素系樹脂（ＰＴＦＥ（ＰｏｌｙＴｅｔｒａＦｌｕｏｒｏＥｔｈｙｌｅｎｅ）、ＰＦＡ（ＰｏｌｙＦｌｕｏｒｏＥｔｈｙｌｅｎｅ）、ＥＴＦＥ（ＥｔｈｙｌｅｎｅＴｅｔｒａＦｌｕｏｒｏＥｔｈｙｌｅｎｅ）等）、セルロース系材料またはセラミック系材料等が使用される。本実施の形態では、揮発部１４を構成する材料の一例として、ポリエステルが採用される。 As the material forming the volatile part 14, a material that is less reactive to the hypochlorous acid aqueous solution, that is, a material that is less deteriorated by the hypochlorous acid aqueous solution is used. For example, polyolefin resin (polyethylene resin, polypropylene resin, etc.), PET (polyethylene terephthalate resin), vinyl chloride resin, fluorine resin (PTFE (PolyTetraFluoroEthylene), PFA (PolyFluoroEthylene), ETFE (EthyleneTetraFluoroEthylene) material, etc.), cellulose, etc. Alternatively, a ceramic material or the like is used. In the present embodiment, polyester is adopted as an example of the material forming the volatilization unit 14.
　集塵フィルタ５は、不織布などの繊維でプリーツ状に構成された空気清浄フィルタであり、中性能、高性能、ＨＥＰＡ（Ｈｉｇｈ　Ｅｆｆｉｃｉｅｎｃｙ　Ｐａｒｔｉｃｕｌａｔｅ　Ａｉｒ）、ＵＬＰＡ（Ｕｌｔｒａ　Ｌｏｗ　Ｐｅｎｅｔｒａｔｉｏｎ　Ａｉｒ）などの性能のフィルタを用いることができる。集塵フィルタ５は、しだいに目が詰まって通気抵抗が上昇してしまうため、定期的に交換できるよう着脱可能な構造とする。尚、集塵フィルタ５の素材は、樹脂やガラス繊維など次亜塩素酸に対して一定の耐久性をもつものであれば特に指定されない。また、集塵フィルタ５の表面に除菌作用や脱臭作用を亢進するような機能性材料を配合してもよく、触媒材料や、アミン類などを使用すると活性が増加したり、持続性を持つなど機能が向上したりするため好ましい。 The dust collecting filter 5 is a pleated air cleaning filter made of fibers such as non-woven fabric, and has medium performance, high performance, HEPA (High Efficiency Particulate Air), ULPA (Ultra Low Penetration Air), and other performance filters. Can be used. Since the dust collecting filter 5 gradually becomes clogged and its ventilation resistance increases, it has a detachable structure so that it can be replaced periodically. The material of the dust collecting filter 5 is not particularly specified as long as it has a certain durability against hypochlorous acid such as resin or glass fiber. Further, a functional material that enhances the disinfecting action and the deodorizing action may be blended on the surface of the dust collecting filter 5, and when a catalyst material, amines or the like is used, the activity is increased or the durability is maintained. It is preferable because the function is improved.
　次亜塩素酸水供給部１５は、次亜塩素酸水溶液を調製し、配管や通水路を通じて次亜塩素酸水溶液をトレイ７に供給するためのものである。次亜塩素酸水溶液は、非解離状態の次亜塩素酸分子（ＨＯＣｌ）を含むものであればよく、次亜塩素酸ナトリウムを希釈するか、塩化物イオンを含有する水を電気分解することで調製するが、濃度を調整しやすく、薬品の扱いがしやすい電気分解式が好ましい。電気分解式では、あらかじめ貯留した水道水に粉末状またはタブレット状の塩化ナトリウムや、濃度が既知の希塩酸溶液、またはその両方を投入して塩化物イオンを含む水溶液を作製する。そして、作製した塩化物イオンを含む水溶液を、チタンなどの基材上に白金やイリジウムなどを形成した不溶性電極で電気分解して、水素イオン濃度が２．２から８．６の次亜塩素酸水を生成する。電極に通電すると、陽極側の電極界面で塩素が生成し、直ちに水に溶解して次亜塩素酸水が生じる。この次亜塩素酸水の生成量は、通電量に依存するため、電極に対する通電量をあらかじめ求めておき、適切なタイミングで通電して所定の濃度範囲に調節を行うことが好ましい。 The hypochlorous acid water supply unit 15 is for preparing a hypochlorous acid aqueous solution and supplying the hypochlorous acid aqueous solution to the tray 7 through a pipe or a water passage. The aqueous solution of hypochlorous acid may be any solution containing non-dissociated molecules of hypochlorous acid (HOCl), and can be diluted with sodium hypochlorite or by electrolyzing water containing chloride ions. Although it is prepared, an electrolysis type is preferable because the concentration can be easily adjusted and chemicals can be easily handled. In the electrolysis method, powdered or tablet-shaped sodium chloride, dilute hydrochloric acid solution having a known concentration, or both are added to tap water stored in advance to prepare an aqueous solution containing chloride ions. Then, the prepared aqueous solution containing chloride ions is electrolyzed by an insoluble electrode in which platinum or iridium is formed on a base material such as titanium to obtain a hypochlorous acid having a hydrogen ion concentration of 2.2 to 8.6. Produces water. When electricity is applied to the electrode, chlorine is generated at the electrode interface on the anode side and immediately dissolved in water to generate hypochlorous acid water. Since the amount of this hypochlorous acid water produced depends on the amount of electricity applied, it is preferable to obtain the amount of electricity applied to the electrode in advance and to apply electricity at an appropriate timing to adjust the concentration within a predetermined concentration range.
　次亜塩素酸水溶液の濃度と水素イオン濃度は、除菌に必要な次亜塩素酸を放出することができる範囲である必要がある。次亜塩素酸水溶液の濃度と水素イオン濃度は、５ｍｇ／Ｌ以上、２００ｍｇ/Ｌ以下でかつｐＨ５．０からｐＨ８．６の範囲内であることが好ましく、より好ましくは３０ｍｇ／Ｌ以上８０ｍｇ／Ｌ以下でかつｐＨ５．０からｐＨ６．０の範囲内の微酸性の次亜塩素酸水であると殺菌効果が高い。次亜塩素酸水の濃度は、電気分解式の場合には電極への通電量で制御し、薬剤式の場合には、原液の注入量で制御できるようにしてもよい。この次亜塩素酸水溶液の濃度範囲では、栄養型細菌、真菌、ウイルス、抗酸菌、細菌芽胞などを殺菌、抑制できることが知られている。 -The concentration of the hypochlorous acid aqueous solution and the hydrogen ion concentration must be within the range where the hypochlorous acid necessary for sterilization can be released. The concentration of the hypochlorous acid aqueous solution and the hydrogen ion concentration are preferably 5 mg/L or more and 200 mg/L or less and within the range of pH 5.0 to pH 8.6, more preferably 30 mg/L or more and 80 mg/L. A bactericidal effect is high when it is the following and it is slightly acidic hypochlorous acid water in the range of pH 5.0 to pH 6.0. The concentration of hypochlorous acid water may be controlled by the amount of electricity supplied to the electrode in the case of the electrolysis type and by the injection amount of the stock solution in the case of the chemical type. It is known that vegetative bacteria, fungi, viruses, mycobacteria, bacterial spores, etc. can be sterilized and suppressed in the concentration range of this hypochlorous acid aqueous solution.
　次亜塩素酸水溶液から揮発する次亜塩素酸が除菌作用を得るために、ガス濃度としては、０．０１ｐｐｍ以上の濃度である必要がある。また、人体への吸引による健康影響を考慮すると、ガス濃度は、０．５ｐｐｍ以下である必要がある。さらに好ましくは、０．０２ｐｐｍ以上、０．１ｐｐｍ以下である。このガス濃度の範囲では、栄養型細菌、ウイルス、真菌などが殺菌、抑制できることが知られている。 ㆍIn order for hypochlorous acid, which volatilizes from the aqueous solution of hypochlorous acid, to obtain a sterilizing effect, the gas concentration must be 0.01 ppm or higher. Further, in consideration of the health effects of inhalation to the human body, the gas concentration needs to be 0.5 ppm or less. More preferably, it is 0.02 ppm or more and 0.1 ppm or less. It is known that vegetative bacteria, viruses, fungi, etc. can be sterilized and suppressed within this gas concentration range.
　トレイ７に供給された次亜塩素酸水溶液から、通風により次亜塩素酸ガスが揮発すると、次亜塩素酸水溶液の濃度が低下し、揮発量が減少する。そのため、次亜塩素酸ガスの揮発量が所定の濃度を下回らないようにする必要がある。例えば、適宜、トレイ７の次亜塩素酸水溶液を給水、排水するとよく、次亜塩素酸水供給部１５から新しい次亜塩素酸水溶液を供給して水質（適切な濃度）を維持する。排水は、トレイ７に配管または通水路で接続された配管を通じて、排水部１６より排水する。排水部１６には、配管などを通じて排水の制御がしやすいように、開閉自在な弁を設ける。あるいは吸引するポンプを備えてもよい。これらを用いて排水するようにすると、プログラム運転制御で電気信号を用いて自動運転させることができるため、より好ましい。尚、排水された水はタンクに貯留するか、下水管などに直接排水する。 When hypochlorous acid gas is volatilized from the hypochlorous acid aqueous solution supplied to the tray 7 by ventilation, the concentration of the hypochlorous acid aqueous solution is reduced and the volatilization amount is reduced. Therefore, it is necessary to prevent the volatilization amount of hypochlorous acid gas from falling below a predetermined concentration. For example, the hypochlorous acid aqueous solution in the tray 7 may be appropriately supplied and drained, and a new hypochlorous acid aqueous solution is supplied from the hypochlorous acid aqueous solution supply unit 15 to maintain the water quality (appropriate concentration). The drainage is drained from the drainage section 16 through a pipe or a pipe connected to the tray 7 by a water passage. The drain section 16 is provided with a valve that can be opened and closed so that drainage can be easily controlled through piping or the like. Alternatively, a suction pump may be provided. It is more preferable to use these to drain the water, because automatic operation can be performed using an electric signal in the program operation control. The drained water is either stored in a tank or drained directly to a sewer pipe.
　図２は、除菌部８の構成を示す背面概略図である。トレイ７に次亜塩素酸水溶液を貯留し、次亜塩素酸水溶液を含浸させるように揮発部１４を形成し、トレイ７の次亜塩素酸水溶液を一定水位に保つように次亜塩素酸水供給部１５を形成する。揮発部１４および次亜塩素酸水供給部１５をトレイ７の上方から出し入れ可能とすると構造が単純化できて好ましい。さらに、トレイ７の下部に設けられた排水部１６は、次亜塩素酸水供給部１５と対角になるように配置して、トレイ７内部の次亜塩素酸水溶液を効果的に排水できるようにすることが好ましい。 2 is a schematic rear view showing the structure of the sterilization unit 8. The hypochlorous acid aqueous solution is stored in the tray 7, the volatile part 14 is formed so as to be impregnated with the hypochlorous acid aqueous solution, and the hypochlorous acid aqueous solution is supplied so that the hypochlorous acid aqueous solution in the tray 7 is kept at a constant water level. The part 15 is formed. It is preferable that the volatilization unit 14 and the hypochlorous acid water supply unit 15 can be taken in and out from above the tray 7 because the structure can be simplified. Further, the drainage part 16 provided at the lower part of the tray 7 is arranged diagonally to the hypochlorous acid water supply part 15 so that the hypochlorous acid aqueous solution in the tray 7 can be effectively drained. Is preferred.
　次亜塩素酸についてもう少し詳細に述べる。次亜塩素酸は、空気中に放出されると、主に気体状の次亜塩素酸ガスとなることが知られている。この次亜塩素酸ガスは、次亜塩素酸水溶液に含まれる非解離状態の次亜塩素酸分子（ＨＯＣｌ）を含む気体であり、除菌・脱臭作用を発揮する本体であると考えられている。非解離状態の次亜塩素酸分子（ＨＯＣｌ）は、次亜塩素酸水溶液中で水素イオン濃度に応じて濃度が変動し、解離定数（ｐＫａ）は７．５であることが知られている。この非解離状態の次亜塩素酸分子（ＨＯＣｌ）は、ヘンリー則に基づき一定の蒸気圧を持ち、次亜塩素酸水溶液から揮発する性質があることが知られている。そのため、次亜塩素酸水溶液の液面に空気を通気させると、液面と接する空気が連続的に入れ替わり、液面の次亜塩素酸分子（ＨＯＣｌ）の蒸気圧を下げ、連続的に次亜塩素酸分子（ＨＯＣｌ）を揮発させることができる。さらに、この次亜塩素酸分子（ＨＯＣｌ）は強い殺菌作用を持つことが知られている。そのため、次亜塩素酸水溶液を直接作用させなくても、次亜塩素酸分子（ＨＯＣｌ）を含む気体を集塵フィルタ５に通過させることで、集塵フィルタ５の表面に捕集された菌やウイルスなどを除菌することができる。 Describe hypochlorous acid in a little more detail. It is known that hypochlorous acid becomes mainly gaseous hypochlorous acid gas when released into the air. This hypochlorous acid gas is a gas containing a non-dissociated state of hypochlorous acid molecules (HOCl) contained in an aqueous solution of hypochlorous acid, and is considered to be a main body that exerts a sterilizing/deodorizing action. .. It is known that the concentration of non-dissociated hypochlorous acid molecule (HOCl) varies depending on the hydrogen ion concentration in the hypochlorous acid aqueous solution, and the dissociation constant (pKa) is 7.5. It is known that the non-dissociated molecule of hypochlorous acid (HOCl) has a constant vapor pressure based on Henry's law and has a property of volatilizing from an aqueous solution of hypochlorous acid. Therefore, when air is aerated through the liquid surface of the hypochlorous acid aqueous solution, the air contacting the liquid surface is continuously replaced, and the vapor pressure of the hypochlorous acid molecule (HOCl) on the liquid surface is lowered, and the Chloric acid molecules (HOCl) can be volatilized. Furthermore, this hypochlorous acid molecule (HOCl) is known to have a strong bactericidal action. Therefore, even if the hypochlorous acid aqueous solution is not directly acted on, the gas containing the hypochlorous acid molecule (HOCl) is passed through the dust collecting filter 5, whereby the bacteria collected on the surface of the dust collecting filter 5 or It is possible to eradicate viruses and the like.
　上記構成において、空気浄化装置１は、室内から取り込んだ空気に含まれる菌やウイルスなどを集塵フィルタ５で捕集するとともに、揮発部１４から揮発する次亜塩素酸の作用によって、集塵フィルタ５の表面を除菌することができる。集塵フィルタ５の表面に付着した菌やウイルスなどのバイオエアロゾルは、集塵フィルタ５の着脱時や、空気浄化装置１の運転を開始した時に、微粒子が再飛散し、二次汚染などの原因となることがある。実施の形態１の構成においては、次亜塩素酸ガスを集塵フィルタ５に通気させることで、これらの菌やウイルスを連続的に殺菌、抑制することができる。さらに、落下した微粒子は、集塵フィルタ５の下方に設けた開口部１８を通り、次亜塩素酸水溶液を貯留するトレイ７に捕集される。そのため、このような二次汚染の問題を解消することができる。 In the above-described configuration, the air purification device 1 collects the bacteria and viruses contained in the air taken in from the room with the dust collection filter 5 and also the dust collection filter 5 by the action of hypochlorous acid volatilized from the volatilization unit 14. The surface of 5 can be sterilized. The bioaerosol such as bacteria and viruses adhering to the surface of the dust collection filter 5 causes re-dispersion of fine particles when the dust collection filter 5 is attached or detached or when the operation of the air purifying device 1 is started, and causes secondary pollution. May be. In the configuration of the first embodiment, the hypochlorous acid gas is passed through the dust collecting filter 5 to continuously sterilize and suppress these bacteria and viruses. Further, the dropped fine particles pass through the opening 18 provided below the dust collecting filter 5 and are collected in the tray 7 that stores the hypochlorous acid aqueous solution. Therefore, such a problem of secondary pollution can be solved.
　次に、空気浄化装置１の動作工程について説明する。空気浄化装置１は、はじめに、次亜塩素酸水供給部１５で、所定濃度の次亜塩素酸水溶液を生成する。次に、この次亜塩素酸水溶液をトレイ７に供給し、円筒形の揮発部１４をモーターで回転動作させて表面に次亜塩素酸水溶液を連続的に含浸して付着させる。続けて、送風部９を動作させると、吸い込み口３から吸引された空気（室内空気）に含まれる汚染物質が、集塵フィルタ５に捕集される。集塵フィルタ５を通過した清浄空気は、空気清浄風路１２を通って吹き出し口４から室内へ供給されるとともに、浄化風路１３を通じて循環される。清浄空気が浄化風路１３を通過する際、揮発部１４の表面に循環風が通気されると、風速に応じて次亜塩素酸が揮発し、次亜塩素酸を含む空気が集塵フィルタ５の前段（上流側）に合流する。その結果、次亜塩素酸は、室内空気とともに集塵フィルタ５に一様に作用し、フィルタ上に捕集された菌やウイルスに作用して連続的な除菌をする。 Next, the operation process of the air purification device 1 will be described. In the air purification device 1, first, the hypochlorous acid water supply unit 15 generates an aqueous solution of hypochlorous acid having a predetermined concentration. Next, this hypochlorous acid aqueous solution is supplied to the tray 7, and the cylindrical volatilization part 14 is rotated by a motor to continuously impregnate the surface with the hypochlorous acid aqueous solution and deposit it. Subsequently, when the air blower 9 is operated, contaminants contained in the air (indoor air) sucked from the suction port 3 are collected by the dust collecting filter 5. The clean air that has passed through the dust collecting filter 5 is supplied to the room through the air clean air passage 12 from the outlet 4 and is circulated through the purifying air passage 13. When the clean air passes through the purifying air passage 13, if the circulating air is ventilated on the surface of the volatilization unit 14, the hypochlorous acid volatilizes according to the wind speed, and the air containing the hypochlorous acid is the dust collecting filter 5 Merge into the previous stage (upstream side) of. As a result, the hypochlorous acid uniformly acts on the dust collection filter 5 together with the indoor air, and acts on the bacteria and viruses collected on the filter to continuously remove bacteria.
　また、空気浄化装置１の動作を停止したのち、集塵フィルタ５の吸い込み面１７には、細菌やウイルスなどの微粒子が捕集され、堆積したままである。しかし、衝撃や振動、自然な剥離により落下した微粒子は集塵フィルタ５の下方にある開口部１８からトレイ７内に捕集され次亜塩素酸水溶液で除菌される。次回運転前に、排水部１６よりトレイ７外に排水とともに排出され、室内に飛散することを防ぐことができる。 Further, after stopping the operation of the air purification device 1, fine particles such as bacteria and viruses are collected and accumulated on the suction surface 17 of the dust collecting filter 5. However, the particles that have fallen due to shock, vibration, or natural separation are collected in the tray 7 through the opening 18 below the dust collection filter 5 and sterilized with the hypochlorous acid aqueous solution. Before the next operation, it can be prevented from being discharged together with the drainage from the drainage section 16 to the outside of the tray 7 and being scattered indoors.
　（実施の形態２）
　次に、図３Ａおよび図３Ｂを用いて、実施の形態２に係る空気浄化装置１Ａについて説明する。図３Ａは、実施の形態２に係る空気浄化装置１Ａの室内浄化時の動作を示す側方概略図であり、図３Ｂは、空気浄化装置１Ａの内部循環時の動作を示す側方概略図である。 (Embodiment 2)
Next, the air purification apparatus 1A according to the second embodiment will be described with reference to FIGS. 3A and 3B. FIG. 3A is a side schematic view showing an operation of the air purifying apparatus 1A according to the second embodiment during indoor cleaning, and FIG. 3B is a side schematic view showing an operation of the air purifying apparatus 1A during internal circulation. is there.
　空気浄化装置１Ａは、吹き出し口４を開閉可能な機械式の吹き出しシャッター２０を備えている。吹き出しシャッター２０を閉じて筐体２から空気を吹き出さずに内部を除菌する（以下、「内部除菌運転」ともいう）ようにした点で、実施の形態１に係る空気浄化装置１とは異なる。空気浄化装置１Ａは、室内浄化時には開放していた吹き出し口４を（図３Ａ参照）、内部除菌運転時には、吹き出しシャッター２０により閉止する（図３Ｂ参照）。図３Ａおよび図３Ｂに示すように、吹き出しシャッター２０は、吹き出し口４の面に対し、同形状の少なくとも１つ以上の平板で形成される。吹き出しシャッター２０は、例えば片側の１辺を軸にして回転自在とし、ステッピングモーター（不図示）を軸に連結して、ステッピングモーターの回転量によって開閉可能となる構造にする。 The air purification device 1A includes a mechanical blowing shutter 20 that can open and close the blowing port 4. The air purifying device 1 according to the first embodiment in that the blowing shutter 20 is closed to sterilize the inside without blowing air from the housing 2 (hereinafter, also referred to as “internal sterilizing operation”). Is different. The air purifying apparatus 1A closes the blowout port 4 that was open during indoor purification (see FIG. 3A) and closes it with the blowout shutter 20 during internal sterilization operation (see FIG. 3B). As shown in FIGS. 3A and 3B, the blowing shutter 20 is formed of at least one flat plate having the same shape with respect to the surface of the blowing port 4. The blowing shutter 20 is rotatable about, for example, one side on one side and has a structure in which a stepping motor (not shown) is connected to the axis so that the blowing shutter 20 can be opened and closed depending on the rotation amount of the stepping motor.
　上記構成において、空気浄化装置１Ａは、吹き出しシャッター２０によって吹き出し口４を閉止し、浄化風路１３を通じて、筐体２内に次亜塩素酸を含む空気を連続的に循環させる。吹き出し口４を閉止することによって、次亜塩素酸の濃度が上昇し、集塵フィルタ５や筐体２内の表面に作用する次亜塩素酸の量を増加させることができるため、空気浄化装置１Ａの筐体２内を強力に除菌することができる。 In the above configuration, the air purifying device 1A closes the outlet 4 with the blowing shutter 20 and continuously circulates the air containing hypochlorous acid in the housing 2 through the purifying air passage 13. By closing the outlet 4, the concentration of hypochlorous acid rises, and the amount of hypochlorous acid that acts on the surface of the dust collection filter 5 and the housing 2 can be increased. It is possible to strongly sterilize the inside of the casing 2 of 1A.
　図３Ａは通常運転時（室内浄化時）の動作状態を示しているが、図３Ｂのように吹き出しシャッター２０により吹き出し口４を閉止して送風部９を動作させる。すると、気流は、空気清浄風路１２には流れずに、全量が浄化風路１３に流れることになる。これにより、次亜塩素酸を含む空気を空気浄化装置１Ａの筐体２内に循環させ続けることができる。次亜塩素酸は連続的に揮発し続けるため、浄化風路１３内の次亜塩素酸濃度は徐々に増加する。濃度が増加すると、次亜塩素酸による除菌力が高まるため、低濃度では死滅しにくい抗酸菌や細菌芽胞などにも除菌効果を得ることができる。このような内部除菌運転を、あらかじめ回路基板にプログラムしておき、定期的に自動運転させるか、室内浄化運転の停止前に一定時間動作させるようにしておくと、確実に除菌ができるため好ましい。 FIG. 3A shows an operating state during normal operation (during indoor cleaning), but as shown in FIG. 3B, the blowing port 20 is closed by the blowing shutter 20 to operate the blower unit 9. Then, the airflow does not flow in the air purification air passage 12, but the entire amount flows in the purification air passage 13. As a result, the air containing hypochlorous acid can be continuously circulated in the housing 2 of the air purifying apparatus 1A. Since hypochlorous acid continues to volatilize continuously, the concentration of hypochlorous acid in the purification air passage 13 gradually increases. As the concentration increases, the disinfecting power of hypochlorous acid increases, so that it is possible to obtain a disinfecting effect even on acid-fast bacilli and bacterial spores that are difficult to die at low concentrations. Such internal sterilization operation can be surely sterilized by programming the circuit board in advance and automatically operating it regularly or operating for a certain period of time before stopping the indoor cleaning operation. preferable.
　（実施の形態３）
　次に、図４Ａおよび図４Ｂを用いて、実施の形態３に係る空気浄化装置１Ｂについて説明する。 (Embodiment 3)
Next, the air purification apparatus 1B according to the third embodiment will be described with reference to FIGS. 4A and 4B.
　図４Ａは、実施の形態３に係る空気浄化装置１Ｂによる室内への次亜塩素酸の放出動作を示す側方概略図であり、図４Ｂは、空気浄化装置１Ｂの内部循環と上方吹き出し動作を示す側方概略図である。 FIG. 4A is a schematic side view showing the operation of releasing hypochlorous acid into the room by the air purifying apparatus 1B according to Embodiment 3, and FIG. 4B shows the internal circulation and upward blowing operation of the air purifying apparatus 1B. It is a side schematic diagram shown.
　空気浄化装置１Ｂは、次亜塩素酸吹き出し口２１、次亜塩素酸吹き出しシャッター２２および循環風路シャッター２３を備え、次亜塩素酸吹き出し口２１から次亜塩素酸を室内に放出するようにした点で、実施の形態１に係る空気浄化装置１とは異なる。 The air purifier 1B is provided with a hypochlorous acid outlet 21, a hypochlorous acid outlet shutter 22 and a circulating air duct shutter 23, and hypochlorous acid is emitted from the hypochlorous acid outlet 21 into the room. It is different from the air purification device 1 according to the first embodiment in points.
　ここで、空気浄化装置１Ｂでは、図４Ａに示すように、筐体２の、室内に面する前面下部（空気浄化装置１Ｂの設置状態における下部）に開閉可能に次亜塩素酸吹き出し口２１が形成されている。次亜塩素酸吹き出し口２１は、除菌部８を通過させた空気の少なくとも一部を室内へ吹き出すためのものである。次亜塩素酸吹き出し口２１は、浄化風路１３における揮発部１４の下流側が筐体２外と連通するように形成される。さらに、次亜塩素酸吹き出し口２１を開閉可能な機械式の次亜塩素酸吹き出しシャッター２２が形成されている。また、集塵フィルタ５下方の開口部１８を開閉可能な機械式の循環風路シャッター２３が形成されている。循環風路シャッター２３は、集塵フィルタ５に戻る循環風量を調節するためのものである。図４Ａおよび図４Ｂに示すように、次亜塩素酸吹き出しシャッター２２は、略四角形状に形成された次亜塩素酸吹き出し口２１と重なるように、少なくとも１つ以上の略四角形状の平板で形成され、１辺を軸にして筐体２に回転自在に配設される。この軸に、ステッピングモーター（不図示）を接続して、ステッピングモーターの回転量で開閉を制御する。尚、ステッピングモーターによる開閉によらず、開閉用のハンドルを形成し、筐体２の外側から手動で開閉を行なうようにしてもよい。循環風路シャッター２３も、次亜塩素酸吹き出しシャッター２２と同様の回転自在な平板状に形成した構造である。尚、循環風路シャッター２３は、筐体２内の限られた空間で有効に動作できるように、開口部１８に対し平行に配して、平板の対向する２辺で支持して１軸上にスライドさせて開閉できるようにしてもよい。 Here, in the air purifying apparatus 1B, as shown in FIG. 4A, a hypochlorous acid outlet 21 is openably and closably provided in a lower portion of a front surface of the housing 2 facing the room (a lower portion when the air purifying apparatus 1B is installed). Has been formed. The hypochlorous acid outlet 21 is for blowing out at least a part of the air that has passed through the disinfection section 8 into the room. The hypochlorous acid outlet 21 is formed so that the downstream side of the volatilization unit 14 in the purification air passage 13 communicates with the outside of the housing 2. Further, a mechanical hypochlorous acid blowing shutter 22 capable of opening and closing the hypochlorous acid blowing port 21 is formed. Further, a mechanical circulation air passage shutter 23 that can open and close the opening 18 below the dust collecting filter 5 is formed. The circulating air passage shutter 23 is for adjusting the amount of circulating air returning to the dust collecting filter 5. As shown in FIGS. 4A and 4B, the hypochlorous acid blowing shutter 22 is formed of at least one flat plate having a substantially rectangular shape so as to overlap the hypochlorous acid blowing port 21 having a substantially rectangular shape. Then, it is rotatably arranged in the housing 2 with one side as an axis. A stepping motor (not shown) is connected to this shaft, and opening/closing is controlled by the rotation amount of the stepping motor. Instead of opening/closing by the stepping motor, a handle for opening/closing may be formed and the opening/closing may be performed manually from the outside of the housing 2. The circulating air passage shutter 23 also has a structure formed like a rotatable flat plate like the hypochlorous acid blowing shutter 22. The circulating air duct shutter 23 is arranged parallel to the opening 18 so that it can be effectively operated in the limited space inside the housing 2, and is supported by two opposite sides of the flat plate to be supported on one axis. You may make it open and close by sliding.
　上記構成において、次亜塩素酸は、室内に放出されると、室内の空気に含まれる菌やウイルス、あるいは室内の表面（例えば床面や壁等）に付着している菌やウイルスに直接作用してこれらを除菌することができる。図４Ａは、次亜塩素酸吹き出し口２１を開放して、開口部１８を閉止し、次亜塩素酸を床面付近に放出している様子を示している。次亜塩素酸吹き出し口２１に次亜塩素酸吹き出しシャッター２２を設け、開閉式にしているため、必要時にだけ次亜塩素酸の放出を行なうことができる。尚、次亜塩素酸吹き出しシャッター２２により次亜塩素酸吹き出し口２１の開度と、循環風路シャッター２３により開口部１８の開度とを調整すると、室内への次亜塩素酸の放出量と集塵フィルタ５への循環量を調整することができるため好ましい。また、図４Ｂは、次亜塩素酸吹き出し口２１を閉止し、開口部１８を開放して、集塵フィルタ５への循環を行なう様子を示している。 In the above structure, when hypochlorous acid is released indoors, it directly acts on bacteria and viruses contained in the indoor air or bacteria and viruses attached to indoor surfaces (for example, floor surfaces and walls). Then, these can be sterilized. FIG. 4A shows a state in which the hypochlorous acid outlet 21 is opened, the opening 18 is closed, and hypochlorous acid is discharged near the floor surface. Since the hypochlorous acid blowing shutter 22 is provided at the hypochlorous acid blowing port 21 and is opened and closed, the hypochlorous acid can be released only when necessary. If the opening degree of the hypochlorous acid outlet 21 is adjusted by the hypochlorous acid blowing shutter 22 and the opening degree of the opening 18 is adjusted by the circulating air duct shutter 23, the amount of hypochlorous acid released into the room is calculated. This is preferable because the amount of circulation to the dust collecting filter 5 can be adjusted. Further, FIG. 4B shows a state in which the hypochlorous acid outlet 21 is closed, the opening 18 is opened, and circulation to the dust collecting filter 5 is performed.
　尚、実施の形態１に係る空気浄化装置１の構成に、図３Ａおよび図３Ｂに示す実施の形態２の構成と図４Ａおよび図４Ｂに示す実施の形態３の構成との両方を組み合わせたものとしてもよい。さらにこれらの動作制御を自動で実施できるようにあらかじめマイコン（マイクロコントローラ）などにプログラムした電子制御装置を搭載すると利便性がさらに良くなり、好ましい。 It should be noted that the configuration of the air purifying apparatus 1 according to the first embodiment is a combination of both the configuration of the second embodiment shown in FIGS. 3A and 3B and the configuration of the third embodiment shown in FIGS. 4A and 4B. May be Further, it is preferable to install an electronic control device in which a microcomputer (microcontroller) or the like is programmed in advance so that these operation controls can be carried out automatically, because the convenience is further improved.
　以上により、室内の空気を除菌するとともに、微生物の再飛散による二次汚染を防ぐことができる空気浄化装置１Ｂを実現することができる。これにより、対象領域（空気浄化装置１Ｂが設置された室内）の人は、空気を介して人体に影響を与えうる微生物の感染を防ぐことができる。 As described above, it is possible to realize the air purifying device 1B that can sterilize the indoor air and prevent secondary pollution due to re-scattering of microorganisms. As a result, a person in the target area (in the room where the air purification device 1B is installed) can prevent infection of microorganisms that may affect the human body through the air.
　（実施の形態４）
　次に、図５～図７Ｂを用いて、実施の形態４に係る空気浄化装置３１について説明する。 (Embodiment 4)
Next, the air purification device 31 according to the fourth embodiment will be described with reference to FIGS. 5 to 7B.
　本開示に係る浄化部を備える空気浄化装置の一例として、実施の形態１では、集塵フィルタ５を通過させた空気を除菌する除菌部８を備える空気浄化装置１を説明した。実施の形態４では、本開示に係る浄化部を備える空気浄化装置の一例として、除菌部８に替えて集塵フィルタ５を通過させた空気を脱臭する脱臭部３８を備える空気浄化装置３１を説明する。尚、理解を容易にするために、実施の形態１～３と同一の構成要件については、同一の符号を付し、その詳細な説明は省略する。 As an example of the air purifying device including the purifying unit according to the present disclosure, in the first embodiment, the air purifying device 1 including the sterilizing unit 8 that sterilizes the air that has passed through the dust collecting filter 5 has been described. In the fourth embodiment, as an example of the air purifying device including the purifying unit according to the present disclosure, the air purifying device 31 including the deodorizing unit 38 that deodorizes the air that has passed through the dust collecting filter 5 instead of the sterilizing unit 8 is described. explain. Note that, for ease of understanding, the same components as those in the first to third embodiments are designated by the same reference numerals, and detailed description thereof will be omitted.
　図５は、実施の形態４に係る空気浄化装置３１の内部構造を示す概略図である。 FIG. 5 is a schematic diagram showing the internal structure of the air purification device 31 according to the fourth embodiment.
　図５に示すように、空気浄化装置３１は、集塵フィルタ５の下方（空気浄化装置３１の設置状態における下方）に、脱臭を行うための次亜塩素酸水溶液を貯留するトレイ７Ａを配置し、トレイ７Ａ内に脱臭部３８を形成する。脱臭部３８は、集塵フィルタ５を通過させた空気に含まれる臭気成分を次亜塩素酸水溶液に気液接触させて除去するものである。 As shown in FIG. 5, the air purifier 31 has a tray 7A for storing the hypochlorous acid aqueous solution for deodorization, which is disposed below the dust collection filter 5 (below the installed state of the air purifier 31). The deodorizing portion 38 is formed in the tray 7A. The deodorizing unit 38 removes the odorous components contained in the air that has passed through the dust collecting filter 5 by bringing them into gas-liquid contact with an aqueous solution of hypochlorous acid.
　送風部９の下側吐出口１１は、トレイ７Ａおよび脱臭部３８と連通し、さらに集塵フィルタ５の上流側へと連通している。 The lower discharge port 11 of the blower unit 9 communicates with the tray 7A and the deodorizing unit 38, and further with the upstream side of the dust collecting filter 5.
　また、空気浄化装置３１は、実施の形態１に係る空気浄化装置１と同様に、吸い込み口３から筐体２内に吸い込んだ空気を集塵フィルタ５に通過させて、吹き出し口４から吹き出す空気清浄風路１２を備える。また、空気浄化装置３１は、筐体２の内部で集塵フィルタ５を通過させた空気を、さらに脱臭部３８を通過させたのちに、集塵フィルタ５の上流側へ供給する浄化風路１３Ａを備える。空気の脱臭を行うためには、脱臭部３８を通過させる空気を確実に次亜塩素酸水溶液へ接触させるようにすることが重要である。 Further, in the air purifying device 31, like the air purifying device 1 according to the first embodiment, the air sucked into the housing 2 through the suction port 3 passes through the dust collecting filter 5 and is blown out through the blowing port 4. A clean air passage 12 is provided. Further, the air purifying device 31 supplies the purifying air passage 13</b>A that supplies the air that has passed through the dust collecting filter 5 inside the housing 2 to the upstream side of the dust collecting filter 5 after further passing through the deodorizing section 38. Equipped with. In order to deodorize the air, it is important to ensure that the air passing through the deodorizing section 38 comes into contact with the hypochlorous acid aqueous solution.
　そこで、脱臭部３８は、図６Ａに示すように、気液接触部３９と、気液接触部３９へ次亜塩素酸水を供給する水循環部４０とを有している。 Therefore, as shown in FIG. 6A, the deodorizing section 38 has a gas-liquid contact section 39 and a water circulation section 40 for supplying hypochlorous acid water to the gas-liquid contact section 39.
　気液接触部３９は、トレイ７Ａ内において浄化風路１３Ａを遮るように配置した多孔質体である。 The gas-liquid contact portion 39 is a porous body arranged so as to block the purification air passage 13A in the tray 7A.
　図６Ａは、脱臭部３８の構成を示す背面概略図である。図６Ａに示すように、気液接触部３９の下部を、トレイ７Ａに貯留させた次亜塩素酸水溶液に浸水させている。水循環部４０は、トレイ７Ａ内の次亜塩酸水溶液をくみ上げるポンプ４１と、気液接触部３９の上方へ次亜塩酸水溶液を移動させる配管４２と、配管４２の末端において気液接触部３９上方から次亜塩酸水溶液を滴下させる滴下部４３とを有している。 FIG. 6A is a schematic rear view showing the configuration of the deodorizing unit 38. As shown in FIG. 6A, the lower portion of the gas-liquid contact portion 39 is submerged in the hypochlorous acid aqueous solution stored in the tray 7A. The water circulation unit 40 includes a pump 41 for pumping the hypochlorous acid aqueous solution in the tray 7A, a pipe 42 for moving the hypochlorous acid aqueous solution above the gas-liquid contacting unit 39, and a gas-liquid contacting unit 39 from above at the end of the pipe 42. It has a dropping part 43 for dropping a hypochlorous acid aqueous solution.
　図６Ｂは、図６Ａ中のＡ断面の拡大模式図である。滴下部４３は気液接触部３９の上方に離して設けてられている。汲み上げた次亜塩素酸水溶液が均等に流下するように、滴下部４３には、適当な間隔をとって開口が設けられている。 6B is an enlarged schematic view of the A cross section in FIG. 6A. The dripping portion 43 is provided above the gas-liquid contact portion 39 so as to be separated therefrom. The drip unit 43 is provided with openings at appropriate intervals so that the pumped hypochlorous acid aqueous solution flows down uniformly.
　これにより、気液接触部３９には、上方から次亜塩素酸水溶液が供給される。 With this, the hypochlorous acid aqueous solution is supplied to the gas-liquid contact portion 39 from above.
　気液接触部３９には、空気の流れの方向に貫通した空隙４４（図７Ｂ参照）をもつ多層体を用いることで、滴下部４３から供給した次亜塩素酸水溶液が空隙４４の表面に沿って水膜を形成することができる。これにより、空隙４４を通過する空気が次亜塩素酸水溶液に接触しやすくすることができる。 The gas-liquid contact portion 39 uses a multi-layered body having a void 44 (see FIG. 7B) penetrating in the direction of air flow, so that the hypochlorous acid aqueous solution supplied from the dropping portion 43 runs along the surface of the void 44. To form a water film. This makes it easier for the air passing through the voids 44 to come into contact with the hypochlorous acid aqueous solution.
　より具体的には、効率的に空気が次亜塩素酸水溶液に接触できるよう、気液接触部３９が浄化風路１３Ａを塞ぐように配置され、空隙４４内部を気流が流れるようにする。臭い成分の次亜塩素酸水溶液に対する吸収効率は、空気が水膜と接触する時間に依存する。そのため、気液接触部３９は、気流の方向に気液接触部３９を貫通する空隙４４の長さを、一定以上にすることで、接触時間が長く得られ、効率的に脱臭できるようになる。気液接触部３９は、立体形状に構成すると、次亜塩素酸水溶液と空気との接触時間を増加させることができ、より好ましい。気液接触部３９は、例えば、水を吸水する性質をもつスポンジ状の薄い平板を波板上に形成し、さらに、平板と重ね合わせて空隙４４を形成した多層構造、曲面状、円筒状、筒状、またはそれらを複数組み合わせた形状が考えられる。特に、表面積が大きくなり次亜塩素酸水溶液を効率的に空気と接触させるためには、波板の多層構造であるとよい。 More specifically, the gas-liquid contact portion 39 is arranged so as to block the purification air passage 13A so that the air can efficiently contact the hypochlorous acid aqueous solution, and the air flow flows inside the void 44. The absorption efficiency of the odorous component with respect to the aqueous solution of hypochlorous acid depends on the time during which the air contacts the water film. Therefore, in the gas-liquid contact portion 39, by making the length of the void 44 penetrating the gas-liquid contact portion 39 in the air flow direction a certain length or more, a long contact time can be obtained and deodorization can be efficiently performed. .. It is more preferable that the gas-liquid contact portion 39 has a three-dimensional shape because it can increase the contact time between the hypochlorous acid aqueous solution and air. The gas-liquid contact portion 39 is, for example, a sponge-like thin plate having a property of absorbing water, formed on a corrugated plate, and further laminated with the plate to form a void 44. A cylindrical shape or a shape in which a plurality of them are combined may be considered. In particular, in order to increase the surface area and efficiently bring the hypochlorous acid aqueous solution into contact with air, a multi-layer structure of corrugated sheets is preferable.
　図７Ａは、気液接触部３９の構造の一例を示す概略図である。図７Ａでは、波板と平板を組み合わせた多層構造からなる気液接触部３９を正面からみた構造を示している。また、図７Ｂは、気液接触部３９の拡大模式図である。 FIG. 7A is a schematic diagram showing an example of the structure of the gas-liquid contact portion 39. FIG. 7A shows a structure in which the gas-liquid contact portion 39 having a multi-layer structure in which a corrugated plate and a flat plate are combined is viewed from the front. FIG. 7B is an enlarged schematic view of the gas-liquid contact portion 39.
　波板と平板とを交互に積層させると、奥行方向に貫通した空隙４４を形成することができる。また、スポンジ状の薄い平板を用いることで、図７Ｂに示すように、素材の内部を矢印に沿って次亜塩素酸水溶液が均等に降下し、素材全体に効率よく次亜塩素酸水溶液を行き渡らせることができる。また、水は材料内を浸透しながら降下していくため、空隙４４内および開口面４５は水滴によって閉塞されず、通気抵抗が上昇することを防ぐことができる。またこのとき、波板状の多層構造は、開口面４５を気流に向け、波板の表面に沿って気流が流れるように浄化風路１３Ａ内に配置する。このようにして、気液接触部３９に空気の流れの方向に貫通した空隙４４を形成することができる。 By alternately laminating corrugated plates and flat plates, it is possible to form a void 44 that penetrates in the depth direction. In addition, by using a sponge-like thin flat plate, as shown in FIG. 7B, the hypochlorous acid aqueous solution drops uniformly along the arrow inside the material, and the hypochlorous acid aqueous solution is efficiently spread over the entire material. It can be done. Further, since water descends while penetrating the inside of the material, the inside of the void 44 and the opening surface 45 are not blocked by water droplets, and it is possible to prevent the ventilation resistance from increasing. Further, at this time, the corrugated plate-shaped multilayer structure is arranged in the purifying air passage 13A so that the opening surface 45 faces the airflow and the airflow flows along the surface of the corrugated plate. In this way, it is possible to form the gap 44 penetrating in the gas-liquid contact portion 39 in the air flow direction.
　気液接触部３９を構成する材料としては、次亜塩素酸水に反応性の少ない材料、即ち、次亜塩素酸水溶液による劣化が少ない材料が用いられる。例えばポリオレフィン系樹脂（ポリエチレン樹脂、ポリプロピレン樹脂等）、ＰＥＴ（ポリエチレン・テレフタラート樹脂）、塩化ビニル樹脂、フッ素系樹脂（ＰＴＦＥ、ＰＦＡ、ＥＴＦＥ等）、セルロース系材料またはセラミック系材料等が使用される。本実施の形態では、気液接触部３９を構成する材料の一例として、ポリエステルが採用される。 As the material forming the gas-liquid contact portion 39, a material that is less reactive to hypochlorous acid water, that is, a material that is less likely to be deteriorated by an aqueous solution of hypochlorous acid is used. For example, polyolefin resin (polyethylene resin, polypropylene resin, etc.), PET (polyethylene terephthalate resin), vinyl chloride resin, fluorine resin (PTFE, PFA, ETFE, etc.), cellulose material, or ceramic material is used. In this embodiment, polyester is used as an example of the material forming the gas-liquid contact portion 39.
　素材は細かい繊維状の素材を平板状に形成するか、繊維を立体状に固定させたものを薄く裁断して形成するか、立体織物や編み物、発泡材などを用いるか、選択することができる。 The material can be selected from forming a fine fibrous material into a flat plate shape, thinly cutting a fixed fiber in three dimensions, or using a three-dimensional woven fabric, knitting, foam material, or the like. ..
　さらに、トレイ７Ａは、集塵フィルタ５の上流側の面の直下、すなわち吸い込み面１７の直下に、位置するようにしている。具体的には、トレイ７Ａの上部には、脱臭部３８よりも下流側において集塵フィルタ５の吸い込み面１７に隣接した位置に開口部１８が形成されている。つまり、集塵フィルタ５は、集塵フィルタ５における空気の通過方向に直交する方向（図５では上方）から見た場合において、集塵フィルタ５の上流側の面である吸い込み面１７が、トレイ７Ａの開口部内に位置するように配置されている。 Further, the tray 7A is positioned directly below the surface of the dust collecting filter 5 on the upstream side, that is, directly below the suction surface 17. Specifically, an opening 18 is formed in the upper portion of the tray 7A at a position adjacent to the suction surface 17 of the dust collecting filter 5 on the downstream side of the deodorizing portion 38. That is, in the dust collecting filter 5, when viewed from a direction (upper side in FIG. 5) orthogonal to the passing direction of air in the dust collecting filter 5, the suction surface 17, which is the surface on the upstream side of the dust collecting filter 5, is the tray. It is arranged so as to be located in the opening of 7A.
　トレイ７Ａは、上面を開口した略箱形状とし、次亜塩素酸水溶液を貯水できる構造として、筐体２の下部に配置する。トレイ７Ａおよび気液接触部３９、水循環部４０のメンテナンスをしやすくするために、例えば、筐体２から水平方向にスライドして着脱可能とすると好ましい。 The tray 7A has a substantially box shape with an open upper surface, and is placed at the bottom of the housing 2 as a structure capable of storing a hypochlorous acid aqueous solution. In order to facilitate the maintenance of the tray 7A, the gas-liquid contact portion 39, and the water circulating portion 40, it is preferable that the tray 7A be slidably attached to and detached from the housing 2 in the horizontal direction.
　上記構成において、空気浄化装置３１は、室内から取り込んだ空気に含まれる菌やウイルスなどを集塵フィルタ５で捕集するとともに、気液接触部３９によって空気中の臭気成分を除去することができる。そのため、空気浄化装置３１によれば、においをも低減して清浄度を高めた空気を供給することができる。また、脱臭部３８では、空隙４４に空気を流すことで副次的に次亜塩素酸水溶液から次亜塩素酸を揮発させることもできる。通過する空気に一定量の次亜塩素酸を連続的に揮発させて、下流側に次亜塩素酸を放出する。揮発する次亜塩素酸の量は、トレイ７Ａ内の次亜塩素酸水溶液の濃度に応じ調整することができる。 In the above configuration, the air purification device 31 can collect bacteria and viruses contained in the air taken in from the room with the dust collection filter 5, and can remove the odorous component in the air by the gas-liquid contact portion 39. .. Therefore, according to the air purifying device 31, it is possible to supply the air whose odor is reduced and the cleanliness is enhanced. Further, in the deodorizing section 38, it is possible to volatilize hypochlorous acid from the hypochlorous acid aqueous solution by flowing air into the gap 44. A certain amount of hypochlorous acid is continuously volatilized in the passing air, and hypochlorous acid is released downstream. The amount of volatilized hypochlorous acid can be adjusted according to the concentration of the hypochlorous acid aqueous solution in the tray 7A.
　つまり、気液接触部３９から揮発する次亜塩素酸の作用によって集塵フィルタ５の表面を除菌することができる。 That is, the surface of the dust collection filter 5 can be sterilized by the action of hypochlorous acid volatilized from the gas-liquid contact portion 39.
　空気浄化装置３１の動作工程について説明する。空気浄化装置３１は、はじめに、次亜塩素酸水供給部１５で、所定濃度の次亜塩素酸水溶液を生成する。次に、この次亜塩素酸水溶液をトレイ７Ａに供給し、水循環部４０のポンプ４１を駆動して、気液接触部３９の上方から連続的に供給することで、気液接触部３９の空隙４４の表面に次亜塩素酸水溶液を付着させる。 The operation process of the air purifier 31 will be described. In the air purification device 31, first, the hypochlorous acid water supply unit 15 generates an aqueous solution of hypochlorous acid having a predetermined concentration. Next, by supplying this hypochlorous acid aqueous solution to the tray 7A and driving the pump 41 of the water circulation unit 40 to continuously supply it from above the gas-liquid contact unit 39, the gap of the gas-liquid contact unit 39 is obtained. An aqueous solution of hypochlorous acid is attached to the surface of 44.
　続けて、送風部９を動作させると、吸い込み口３から吸引された汚染空気（室内空気）が、集塵フィルタ５に捕集される。集塵フィルタ５を通過した清浄空気は、空気清浄風路１２を通って吹き出し口４から室内へ供給されるとともに、浄化風路１３Ａを通じて循環される。集塵フィルタ５を通過し粉塵が除去された空気は、浄化風路１３Ａを通過する際に、気液接触部３９で、次亜塩素酸水溶液に接触して、含まれる臭気成分が除去される。さらに次亜塩素酸を風速に応じて揮発させて、次亜塩素酸を含む空気を集塵フィルタ５の前段（上流側）に合流させる。その結果、次亜塩素酸を、室内空気だけでなく集塵フィルタ５にも一様に作用させ、集塵フィルタ５上に捕集された菌やウイルスに連続的に作用させて除菌することができる。 Next, when the blower unit 9 is operated, the contaminated air (indoor air) sucked from the suction port 3 is collected by the dust collecting filter 5. The clean air that has passed through the dust collecting filter 5 is supplied to the room through the air clean air passage 12 from the outlet 4 and is circulated through the purifying air passage 13A. The air from which the dust has been removed after passing through the dust collecting filter 5 comes into contact with the hypochlorous acid aqueous solution at the gas-liquid contact portion 39 when passing through the purification air passage 13A, and the contained odorous components are removed. .. Further, the hypochlorous acid is volatilized according to the wind speed, and the air containing the hypochlorous acid is merged with the front stage (upstream side) of the dust collection filter 5. As a result, the hypochlorous acid uniformly acts on not only the indoor air but also the dust collection filter 5, and continuously acts on the bacteria and viruses collected on the dust collection filter 5 to remove the bacteria. You can
　また、集塵フィルタ５は、集塵フィルタ５における空気の通過方向に直交する方向（図５では上方）から見た場合において、集塵フィルタ５の上流側の面である吸い込み面１７が、トレイ７Ａの開口部内に位置するように配置されている。これにより、揮発した次亜塩素酸が、近接する集塵フィルタ５の吸い込み面１７に直接作用しやすくなる。また、集塵フィルタ５の表面から落下した粉塵や埃などをトレイ７Ａの次亜塩素酸水溶液に捕集し、次亜塩素酸の作用で強力に殺菌して再飛散を防ぐことができる。すなわち、空気浄化装置３１の動作を停止したのち、集塵フィルタ５の吸い込み面１７に捕集、堆積した細菌やウイルスなどの微粒子は、衝撃や振動、自然な剥離により落下した場合でも、下方のトレイ７Ａ内に捕集され、次亜塩素酸水溶液で除菌される。 Further, in the dust collecting filter 5, when viewed from a direction (upper side in FIG. 5) orthogonal to the passage direction of air in the dust collecting filter 5, the suction surface 17 which is the upstream side of the dust collecting filter 5 is a tray. It is arranged so as to be located in the opening of 7A. This facilitates the volatilized hypochlorous acid to directly act on the suction surface 17 of the adjacent dust collection filter 5. Further, dust or dust falling from the surface of the dust collecting filter 5 can be collected in the hypochlorous acid aqueous solution of the tray 7A and strongly sterilized by the action of hypochlorous acid to prevent re-scattering. That is, after the operation of the air purifying device 31 is stopped, the fine particles such as bacteria and viruses collected and accumulated on the suction surface 17 of the dust collecting filter 5 fall below even if they drop due to shock, vibration, or natural separation. It is collected in the tray 7A and sterilized with a hypochlorous acid aqueous solution.
　以上のように、浄化風路１３Ａの内部に、空気中の臭気成分を除去するための気液接触部３９を配置し、気液接触部３９に空気を通風させると、気液接触部３９の内部に形成された水膜に臭気成分が接触して、臭気成分は吸収される。さらに、臭気成分を吸収した水が、自然流下してトレイ７Ａに回収されることで、臭気成分の再放出を防ぐことができる。この二つの作用によって脱臭効果が発揮される。 As described above, when the gas-liquid contact portion 39 for removing the odor component in the air is arranged inside the purification air passage 13A and the gas-liquid contact portion 39 is ventilated with air, the gas-liquid contact portion 39 The odorous component comes into contact with the water film formed inside, and the odorous component is absorbed. Furthermore, the water that has absorbed the odorous components naturally flows down and is collected in the tray 7A, so that the odorous components can be prevented from being re-released. The deodorizing effect is exhibited by these two effects.
　また、気液接触部３９に付着している次亜塩素酸水溶液からは次亜塩素酸分子が揮発し、集塵フィルタ５の表面に一様に接触して集塵フィルタ５を除菌することができる。 Further, hypochlorous acid molecules are volatilized from the hypochlorous acid aqueous solution adhering to the gas-liquid contact portion 39 and uniformly contact the surface of the dust collecting filter 5 to sterilize the dust collecting filter 5. You can
　つまり、室内の空気を除菌するとともに、再飛散による微生物の二次汚染を防ぐことができる空気浄化装置３１を実現することができる。これにより、対象領域（空気浄化装置３１が設置された室内）の人は、空気を介して人体に影響を与えうる微生物の感染を防ぐことができる。 That is, it is possible to realize the air purifying device 31 that can sterilize the indoor air and prevent secondary contamination of microorganisms due to re-scattering. As a result, a person in the target area (in the room where the air purification device 31 is installed) can prevent infection of microorganisms that may affect the human body through the air.
　本開示の空気浄化装置は、家庭用や事務用、公共空間などの除菌、殺菌、消毒または脱臭を行なう空気浄化装置としての活用が期待されるものである。 The air purification device of the present disclosure is expected to be utilized as an air purification device for sterilizing, sterilizing, disinfecting or deodorizing households, offices, public spaces and the like.
　１　　空気浄化装置
　１Ａ　空気浄化装置
　１Ｂ　空気浄化装置
　２　　筐体
　３　　吸い込み口
　４　　吹き出し口
　５　　集塵フィルタ
　６　　支持枠
　７　　トレイ
　７Ａ　トレイ
　８　　除菌部
　９　　送風部
　１０　　上側吐出口
　１１　　下側吐出口
　１２　　空気清浄風路
　１３　　浄化風路
　１３Ａ　浄化風路
　１４　　揮発部
　１５　　次亜塩素酸水供給部
　１６　　排水部
　１７　　吸い込み面
　１８　　開口部
　１９　　流入口
　２０　　吹き出しシャッター
　２１　　次亜塩素酸吹き出し口
　２２　　次亜塩素酸吹き出しシャッター
　２３　　循環風路シャッター
　３１　　空気浄化装置
　３８　　脱臭部
　３９　　気液接触部
　４０　　水循環部
　４１　　ポンプ
　４２　　配管
　４３　　滴下部
　４４　　空隙
　４５　　開口面 1 Air Purifying Device 1A Air Purifying Device 1B Air Purifying Device 2 Housing 3 Suction Port 4 Blowout Port 5 Dust Collection Filter 6 Support Frame 7 Tray 7A Tray 8 Bacteria Removal Unit 9 Blower Part 10 Upper Discharge Port 11 Lower Discharge Port 12 Air Clean air passage 13 Purification air passage 13A Purification air passage 14 Volatilization part 15 Hypochlorous acid water supply part 16 Drainage part 17 Suction surface 18 Opening 19 Inlet 20 Outlet shutter 21 Hypochlorous acid outlet 22 Hypochlorous acid outlet Shutter 23 Circulating air path shutter 31 Air purification device 38 Deodorizing section 39 Gas-liquid contact section 40 Water circulation section 41 Pump 42 Piping 43 Dropping section 44 Void 45 Opening surface

Claims (4)

  1. 　空気を通過させて微粒子を除去する集塵フィルタと、
    　前記集塵フィルタの下方に配置され、除菌または脱臭を行うための次亜塩素酸水溶液を貯留するトレイと、
    　前記トレイ内に形成され、前記集塵フィルタを通過させた空気を除菌または脱臭し、前記トレイの開口部を介して、前記集塵フィルタにおける前記空気の通過方向の上流側へ通過可能に形成された浄化部と、を筐体内に備え、
    　前記開口部は前記トレイの上面に位置し、前記集塵フィルタにおける前記空気の前記通過方向に直交する方向から見た場合において、前記集塵フィルタにおける前記上流側の面が前記開口部内に位置するように、前記集塵フィルタは配置されている
    　ことを特徴とする空気浄化装置。     A dust collection filter that passes air to remove fine particles,
    A tray that is arranged below the dust collection filter and stores a hypochlorous acid aqueous solution for performing sterilization or deodorization,
    Formed in the tray to remove bacteria or deodorize the air that has passed through the dust collecting filter, and to be able to pass through the opening of the tray to the upstream side in the passing direction of the air in the dust collecting filter. And a purifying section that has been
    The opening is located on the upper surface of the tray, and the upstream surface of the dust collecting filter is located inside the opening when viewed from a direction orthogonal to the passing direction of the air in the dust collecting filter. Thus, the dust collecting filter is arranged.
  2. 　前記浄化部は、次亜塩素酸により除菌するものであり、
    　前記筐体は、吸い込み口と吹き出し口とを有し、
    　前記空気浄化装置はさらに、
    　少なくとも２方向に吐出口を有し、前記吸い込み口から吸い込み、前記集塵フィルタを通過させた前記空気を、前記吹き出し口側と前記浄化部側とへ吐出させる送風部を前記筐体内に備え、
    　前記空気浄化装置はさらに、
    　前記吹き出し口を開閉可能な吹き出しシャッターを備え、
    　前記吹き出しシャッターにより前記吹き出し口を閉止して、前記送風部により前記浄化部側へと吐出された前記集塵フィルタを通過させた前記空気を、前記浄化部から前記開口部を介して前記集塵フィルタにおける前記上流側へと通過させて前記筐体内で循環させる
    　ことを特徴とする請求項１に記載の空気浄化装置。     The purification unit is for sterilizing with hypochlorous acid,
    The housing has a suction port and a blowing port,
    The air purification device further includes
    The housing has a blower unit that has discharge ports in at least two directions, sucks the air that has been sucked in from the suction port, and has passed through the dust collection filter, and discharges the air to the outlet port side and the purification unit side.
    The air purification device further includes
    Equipped with a blowing shutter that can open and close the blowing port,
    The air that has passed through the dust collecting filter discharged to the purification unit side by the blower unit by closing the blowout port by the blowing shutter, collects the dust from the purification unit through the opening. The air purification device according to claim 1, wherein the air purification device is passed through to the upstream side of the filter and circulated in the housing.
  3. 　前記空気浄化装置はさらに、
    　前記筐体の、室内に面する前面下部に形成され、前記浄化部から前記清浄部を通過させた空気を吹き出すための次亜塩素酸吹き出し口と、
    　前記次亜塩素酸吹き出し口の開度を調整可能な次亜塩素酸吹き出しシャッターと、
    　前記開口部の開度を調整可能な循環風路シャッターと、を備え、
    　前記循環風路シャッターにより前記開口部の一部を閉止し、かつ前記次亜塩素酸吹き出しシャッターにより前記次亜塩素酸吹き出し口の少なくとも一部を開放し、前記浄化部を通過させた前記空気の一部を前記室内に放出する
    　ことを特徴とする請求項１または２に記載の空気浄化装置。     The air purification device further includes
    A hypochlorous acid outlet for blowing out the air that has passed through the cleaning section from the cleaning section, which is formed in the lower part of the front surface of the housing facing the room,
    A hypochlorous acid blowing shutter capable of adjusting the opening of the hypochlorous acid blowing port,
    A circulating air passage shutter capable of adjusting the opening of the opening,
    A part of the opening is closed by the circulating air passage shutter, and at least a part of the hypochlorous acid blowing outlet is opened by the hypochlorous acid blowing shutter, and the air that has passed through the purifying unit is The air purifying apparatus according to claim 1 or 2, wherein a part of the air is discharged into the room.
  4. 　前記浄化部は、前記集塵フィルタを通過させた前記空気を前記次亜塩素酸水溶液に気液接触させて臭気成分の除去をするものである
    　ことを特徴とする請求項１に記載の空気浄化装置。     The air purification according to claim 1, wherein the purifying unit removes odorous components by bringing the air that has passed through the dust collecting filter into gas-liquid contact with the hypochlorous acid aqueous solution. apparatus.
PCT/JP2019/051002 2019-01-08 2019-12-25 Air purification device WO2020145165A1 (en)

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JP2012026692A (en) * 2010-07-27 2012-02-09 Panasonic Corp Air cleaner
JP2016202191A (en) * 2013-10-01 2016-12-08 株式会社シリウス Indoor air purification method and apparatus used for the same
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JP2005046800A (en) * 2003-07-31 2005-02-24 Tiger Vacuum Bottle Co Ltd Air cleaner
JP2010284635A (en) * 2009-05-12 2010-12-24 Daikin Ind Ltd Electrical discharge unit for liquid treatment and humidity conditioning apparatus
JP2012026692A (en) * 2010-07-27 2012-02-09 Panasonic Corp Air cleaner
JP2016202191A (en) * 2013-10-01 2016-12-08 株式会社シリウス Indoor air purification method and apparatus used for the same
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