WO2006018949A1 - 空気浄化装置、空気浄化方法、光触媒担持成形体及び光触媒担持成形体の製造方法 - Google Patents
空気浄化装置、空気浄化方法、光触媒担持成形体及び光触媒担持成形体の製造方法 Download PDFInfo
- Publication number
- WO2006018949A1 WO2006018949A1 PCT/JP2005/013552 JP2005013552W WO2006018949A1 WO 2006018949 A1 WO2006018949 A1 WO 2006018949A1 JP 2005013552 W JP2005013552 W JP 2005013552W WO 2006018949 A1 WO2006018949 A1 WO 2006018949A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- photocatalyst
- air
- light
- surface layer
- molded body
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000011941 photocatalyst Substances 0.000 claims abstract description 81
- 239000002344 surface layer Substances 0.000 claims abstract description 42
- 238000013032 photocatalytic reaction Methods 0.000 claims abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 64
- 230000002093 peripheral effect Effects 0.000 claims description 28
- 238000004887 air purification Methods 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 16
- 229920003043 Cellulose fiber Polymers 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 13
- 239000002657 fibrous material Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 9
- 230000001678 irradiating effect Effects 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000008016 vaporization Effects 0.000 claims description 2
- 230000020169 heat generation Effects 0.000 claims 1
- 230000003197 catalytic effect Effects 0.000 abstract description 9
- 239000000843 powder Substances 0.000 abstract description 6
- 239000003570 air Substances 0.000 description 91
- 239000004408 titanium dioxide Substances 0.000 description 29
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 10
- 239000011230 binding agent Substances 0.000 description 10
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 230000001699 photocatalysis Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 238000004332 deodorization Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920002620 polyvinyl fluoride Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- BAQNULZQXCKSQW-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[Ti+4].[Ti+4] BAQNULZQXCKSQW-UHFFFAOYSA-N 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- 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
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultra-violet radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultra-violet radiation
- A61L9/205—Ultra-violet radiation using a photocatalyst or photosensitiser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
-
- B01J35/39—
-
- B01J35/58—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- B01J35/40—
Definitions
- Air purification apparatus air purification method, photocatalyst-supported molded body, and method for producing photocatalyst-supported molded body
- the present invention relates to an air purification device, an air purification method, a photocatalyst-supported molded article used therefor, and a method for producing a photocatalyst-supported molded article.
- the present invention relates to an air purifier and the like that can sufficiently exert the effect of the photocatalyst with a simple configuration.
- a photocatalyst cannot exhibit sufficient catalytic action unless irradiated with ultraviolet rays.
- sunlight can be used, and even in the shade, the amount of ultraviolet light necessary for the catalytic reaction can be obtained. Therefore, a certain effect can be expected.
- light emitted from lighting equipment such as fluorescent lamps must be used indoors, except that sunlight entering through windows is used.
- a sufficient photocatalytic effect cannot be exhibited only with light from a fluorescent lamp.
- a photocatalyst such as titanium dioxide is provided in the form of a powder! This powder is used as a filter or the like by kneading and supporting it on a resin material.
- an air purifier configured to pass air through a reactor having a photocatalyst supported on the inner surface and treat the photocatalyst with the photocatalyst. It is disclosed.
- the air purifier is formed in a cylindrical shape, and is provided with one opening force, a fan for flowing air to the other opening, and a light source for irradiating light on the inner photocatalyst carrying surface.
- Japanese Unexamined Patent Publication No. 2000-119995 discloses an antibacterial paper constituted by uniformly dispersing titanium oxide powder and fixing it on the surface layer portion of the paper material. ! Speak.
- the paper material is formed by dispersing titanium in a paper water tank and uniformly adsorbing the paper material and titanium dioxide powder particles on the surface of the mold.
- the air purifier described in the above-mentioned prior art document 1 the air flows into the cylindrical reaction vessel and the air flows only in the axial direction of the cylindrical vessel. For this reason, the air passing near the inner surface carrying the photocatalyst is only a part of the air flowing in the cylindrical reaction vessel. Moreover, since the photocatalyst is only carried on the inner surface of the cylinder, the amount of the photocatalyst that acts on the air is also limited. Therefore, a sufficient air cleaning effect cannot be expected.
- titanium dioxide particles can be reliably supported without using a noinda.
- titanium dioxide particles are introduced into the paper water tank and the titanium dioxide is supported in the molded body together with the fiber material. Therefore, a large amount of titanium dioxide is used. I need.
- the photocatalytic action is exerted only in the range where the light reaches.
- the surface is irradiated with the most light.
- the photocatalytic action is exerted on the surface portion of the supported titanium dioxide. Most of the supported titanium particles cannot exhibit a photocatalytic reaction. Therefore, the efficiency is worse than the amount of the supported photocatalyst.
- the present invention provides an air purification device and a photocatalyst-carrying molded article that can exhibit the catalytic action of a supported photocatalyst to the maximum with a very simple configuration.
- An air purifier according to the invention described in claim 1 of the present application is provided in a cylindrical body having a plurality of air circulation holes in a wall portion surrounding the internal space, and is disposed in the internal space.
- a light irradiating device that irradiates light toward the inner surface of the wall portion, and the inside of the wall portion irradiated with light is formed of a porous molded body, and the inner surface layer portion of the porous molded body is It is characterized in that a powdery photocatalyst that generates a photocatalytic reaction by light is supported.
- the air to be purified enters and exits the internal space through a plurality of air circulation holes provided in the wall portion of the cylindrical main body.
- the part where the air circulation hole is provided may be provided in any part of the peripheral wall part, the upper wall part and the lower wall part as long as it is a wall part surrounding the internal space.
- the air circulation holes are preferably provided at least on the peripheral wall portion or the upper wall portion.
- the air circulation hole is formed in the wall portion of the cylindrical main body, most of the circulating air is in the vicinity of the inner surface layer portion of the porous molded body supporting the photocatalyst. Will pass through.
- the air purification apparatus is configured such that light is irradiated onto the inner surface layer portion. Therefore, the photocatalyst can be efficiently operated by allowing air to flow in the vicinity of the surface layer portion.
- the form of the cylindrical main body is not particularly limited, and a cylindrical or polygonal cylindrical form can be adopted.
- a cylindrical form by adopting a cylindrical form and providing a rod-shaped light irradiation device along its central axis, it is possible to irradiate strong light on the entire inner surface of the cylindrical main body.
- the air purification efficiency can be increased and the apparatus can be miniaturized.
- the shape and number of the air circulation holes are not particularly limited. According to the shape and size of the cylindrical main body, the shape of the air circulation hole that generates the air flow that can maximize the action of the photocatalyst may be employed.
- the porous molded article carrying the photocatalyst is sufficient to be provided only in the portion irradiated with light.
- the outer side can be formed of a material having high strength such as a metal, and the porous molded body can be arranged on the inner surface, or the entire cylindrical main body can be configured only by the porous molded body. You can also.
- the porous molded body can be formed by pulp molding using a material mainly composed of cellulose fibers.
- a molded body made of cellulose fibers has a high porosity and can hold a powdery photocatalyst in the gaps between the fibers.
- the surface of cellulose fibers, where natural materials such as pulp are also produced is fine. There is a fine gap, and the powdery photocatalyst can be held in this gap. Therefore, the powdery photocatalyst can be supported in an extremely small amount without using a supporting component such as a binder. For this reason, the surface of each photocatalyst is not covered with a binder or the like, and a high photocatalytic action can be exhibited.
- the cellulose fiber has a high ultraviolet transmittance, light reaches not only the surface but also the surface layer part having a surface strength. For this reason, it is possible to bring out the action of the photocatalyst supported on the inner part of the molded body within the range of light, and it is possible to exert an effect that is not conventional.
- the invention described in claim 3 of the present application is such that the powdery photocatalyst is supported with a density gradient in a predetermined depth range of the inner surface layer portion.
- a plurality of irregularities capable of receiving light from the light irradiation device are formed on the inner side of the porous molded body, and the air circulation holes are provided in each of the above-described air circulation holes. It is provided on the outer side of the unevenness.
- the area that can be irradiated with light can be increased, and more photocatalyst can be supported. Further, by providing the air circulation hole in the outer part of the unevenness, that is, in the bottom part of the concave part on the inner surface side, air can flow in and out in the vicinity of the surface layer part of the concave part. For this reason, a photocatalyst can be made to act on many air efficiently.
- the form of the unevenness is not particularly limited, and various forms can be adopted as long as the light irradiation area is increased.
- the concave and convex portions can be formed by arranging a plurality of concave portions recessed radially outward on the inner surface of the porous body, and the air circulation holes can be provided at the bottoms of the concave portions.
- the shape of the recess is not limited.
- the concave portion can be formed in a bowl shape or a cup shape that is recessed outwardly from the inner surface force of the cylindrical main body.
- the peripheral wall portion of the cylindrical main body is formed by molding a plate-like material in which the irregularities are continuously arranged and formed into a cylindrical shape. That is, an air circulation hole and the above-described irregularities are formed on a plate-like material, and the plate-like material is bent or bent into a cylindrical shape. Thereby, the cylindrical main body can be formed extremely easily.
- an air flow can be generated in the external space by a fan or the like, and this air flow can be used.
- a discharge or suction fan can be provided near the air circulation hole to force air to enter and exit.
- the air in the internal space is caused to flow upward by the heat generated by the light irradiation device or by the heating device, so that the upper air circulation hole is formed. And the outside air can be taken into the internal space of the cylindrical main body from the air passage hole provided in the peripheral wall portion or the lower portion.
- the light irradiation device it is desirable to employ a light source that generates ultraviolet light having a wavelength of 300 nm to 400 nm in order to enhance the catalytic action of the photocatalyst.
- a light source that generates ultraviolet light having a wavelength of 300 nm to 400 nm in order to enhance the catalytic action of the photocatalyst.
- black light in which visible light is cut.
- air By utilizing the heat generated by the light irradiation device, air can be taken into the main body where no noise is generated and the photocatalyst can act. Moreover, in the present invention, air flows into the cylindrical space from a plurality of air circulation holes provided in the peripheral wall and the like and flows upward, so that a large amount of air can be processed without using a fan. Is possible.
- the invention described in claim 9 of the present application is the vicinity of the inner surface layer portion in which the ambient air is made to enter and exit from a plurality of air circulation holes provided in the cylindrical main body, and the air that has flowed into the inside carries the photocatalyst. From the light irradiation device arranged in the internal space of the cylindrical body The present invention relates to an air purification method for purifying air by irradiating light that activates the photocatalyst toward the inner surface layer.
- the invention described in claim 10 of the present application is such that the air in the cylindrical main body is caused to flow upward by the heat generated by the light irradiation device force to discharge the upper circulation pore force, and the peripheral wall portion.
- the present invention also relates to an air purification method that allows external air to flow into the internal space.
- the invention described in claim 11 of the present application is a cylindrical porous molded body mainly composed of a fiber material, and a plurality of air circulation holes are formed in a wall portion surrounding the internal space.
- the present invention relates to a photocatalyst-supported molded article in which a powdery photocatalyst is supported on the inner surface layer of the wall.
- the powdery photocatalyst is preferably supported with a density gradient from the surface of the surface layer portion to a portion having a predetermined depth. As a result, when light is irradiated, not only the photocatalyst existing on the surface but also the photocatalyst existing inside can be exhibited.
- the fiber material is not particularly limited, but it is preferable to use a fiber material having hydrophilic surface characteristics. This is because the photocatalyst exhibits catalytic action in the presence of moisture.
- a fiber material having hydrophilic surface characteristics This is because the photocatalyst exhibits catalytic action in the presence of moisture.
- cellulose fiber, acrylic fiber, etc. can be employed.
- the invention described in claim 12 of the present application is such that irregularities are formed on the inner surface of the wall portion, and the air circulation holes are provided on the outer portion of the irregularity.
- the area for supporting the photocatalyst and the area that can be irradiated with light can be increased. Therefore, a large amount of photocatalyst can exhibit its catalytic action, and a high air purification effect can be expected.
- the unevenness is formed by arranging a plurality of recesses having the air circulation holes at the bottom, and a powdery photocatalyst is formed on the inner surface layer of these recesses. Is supported.
- the porous molded body is a pulp mold molded body mainly composed of cellulose fibers, and the powdery photocatalyst is in a surface layer portion of the molded body. First, it is supported by the fine pores on the fiber surface without gaps between the fiber materials.
- the binder component does not cover the surface of the photocatalyst, and the catalytic action can be sufficiently exerted.
- a large number of fine pores exist on the surface of the cellulose fiber, and the powdery photocatalyst can be reliably supported.
- a powdery photocatalyst mainly composed of titanium dioxide can be employed.
- the smaller the particle size of the powder the larger the surface area and the higher photocatalytic reaction can be expected.
- the invention described in claim 16 of the present application is a method for producing a photocatalyst-supported molded body in which a powdery photocatalyst is supported on a surface layer portion of a porous molded body, wherein the porous molded body is molded. And a liquid carrier in which a powdery photocatalyst is dispersed at a predetermined concentration is permeated from the surface of the molded body using a capillary phenomenon, so that the powdery photocatalyst is coated on the surface of the porous molded body. And a photocatalyst carrying step for carrying the liquid carrier, and a drying step for vaporizing the liquid carrier and fixing the powdery photocatalyst inside the molded body.
- the method of molding the porous molded body is not particularly limited! /.
- a woven fabric made of thermoplastic resin fibers can be heat set to form a molded body.
- various fibers are accumulated in a predetermined mold by a paper-making method to form a molded body.
- the norp mold method can be employed.
- liquids can be used as the liquid carrier, but it is preferable to use a liquid that has a property of penetrating by capillary action according to the surface characteristics of the fiber material or the like constituting the porous body. Further, it is preferable that the powdery photocatalyst is supported on the porous body and then vaporized and removed.
- a porous body formed from hydrophilic fibers such as cellulose fibers water can be employed as the liquid carrier.
- spraying, date pinching, etc. can be adopted as a method for applying the liquid carrier to the surface of the porous molded body.
- the photocatalyst is supported on the inner surface layer portion of the porous molded body provided on the inner surface of the cylindrical main body, and the air circulation hole provided in the wall portion surrounding the inner space is provided. Air can be made into and out of the internal space, and by irradiating the inner surface layer with ultraviolet rays, a highly efficient air purifier can be manufactured with a very simple configuration.
- the apparatus configuration is extremely simple, and the apparatus can be easily manufactured, and the manufacturing cost can be kept low.
- FIG. 1 is an external perspective view of an air purification apparatus according to an embodiment of the present invention.
- FIG. 2 is a front view of the air purification device shown in FIG.
- FIG. 3 is an axial sectional view of the air purification device shown in FIG.
- FIG. 4 is a view showing a plate-like member constituting the peripheral wall portion of the air purification device shown in FIG. 1.
- FIG. 5 is a sectional view taken along line V—V in FIG.
- FIG. 6 is a cross-sectional view showing a state where the plate-like member shown in FIG. 4 is formed into a cylindrical shape.
- FIG. 7 is a diagram schematically showing the structure and action of the inner surface layer portion of the air purifier.
- FIG. 1 is an overall perspective view of an air purification device according to the present invention
- FIG. 2 is a front view.
- an air purification device 1 according to the present invention includes a cylindrical main body 2 and a light irradiation device 4 for ultraviolet irradiation installed in an internal space 3 of the cylindrical main body 2. Configured.
- the cylindrical main body 2 includes a peripheral wall portion 6 in which bulging portions 5 bulging outward in the radial direction are arranged, and a lower edge portion of the peripheral wall portion 6.
- the base member 7 is connected to the upper wall 8 and the annular upper member 8 is connected to the upper edge of the peripheral wall 6.
- a concave portion 9 having an inner surface 10 having a substantially quadrangular pyramid shape is formed inside the bulging portion 5.
- the shape of the bulging portion 5 to the concave portion 9 is set.
- the area of the light receiving surface of the light irradiated from the light irradiation device 4 is significantly increased.
- the bulging portion 5 is formed with the same thickness, so that the concave portion 9 having a corresponding shape is formed.
- the outer shape of the bulging portion 5 and the concave portion are the same.
- the inner surface shape of 9 can be formed differently.
- a circular air circulation hole 12 is formed in the bottom 11 of each recess 9.
- the peripheral wall portion 6 is formed by bending the plate-like member 13 shown in FIG. 4 into a substantially octagonal tube shape as shown in FIG.
- the plate-like member 13 is formed by integrally molding a fiber material mainly composed of cellulose to a thickness of about 2 mm by a pulp molding method.
- the plate-like member 13 is formed with the bulging portion 5 to the concave portion 9 having the air circulation holes 12 in a row, and the bulging portion 5 to the concave portion 9 positioned at the edge in the longitudinal direction are overlapped with each other. By combining them, the octagonal cylindrical peripheral wall portion 6 is formed.
- the base member 7 is formed in a substantially disk shape, and its peripheral edge portion is fitted into the lower edge portion of the peripheral wall portion 6 and assembled.
- a socket 14 is held at the center of the inner surface of the base member 7, and an ultraviolet lamp 15 is connected to the socket 14 to constitute the light irradiation device 4.
- the base member 7 is also formed with small air circulation holes (not shown) so that air can be circulated.
- the ultraviolet lamp 15 is erected along the central axis of the cylindrical main body 2.
- a plurality of legs 16 for standing the cylindrical main body are formed at the lower part of the base member 7.
- the base member 7 is also integrally formed from the same pulp mold product as the peripheral wall portion 6.
- the form of the light irradiation device 4 is not limited to the above-described configuration.
- a type that can irradiate at least the inner surface with ultraviolet rays may be employed.
- black light that generates ultraviolet light having a wavelength of 400 nm and a wavelength of 400 nm and cuts visible light.
- the upper member 8 is formed in a substantially annular shape, and as shown in FIGS. 1 and 2, the outer peripheral edge portion is fitted and connected to the upper edge portion of the peripheral wall portion 6.
- An upper air circulation hole 17 that is larger than the air circulation hole 12 formed in the peripheral wall portion 6 is provided in the central portion.
- cellulose fiber material can be molded using virgin pulp material, or can be molded using waste paper.
- powdery titanium dioxide is supported on the inner surfaces of the upper member 8, the peripheral wall portion 6 and the base member 7.
- titanium dioxide with an average particle size of 0.01 to 0.05 m is used. It is preferable to employ a material having a large amount of titanium dioxide component having an anatase type crystal structure. Further, the specific surface area of the titanium dioxide is not particularly limited, but it is preferable to use one having a Zg of 50 to 300 square meters.
- the air purification device 1 having the above-described configuration, when the light irradiation device 4 is turned on, ultraviolet rays are irradiated to the inner surfaces of the upper member 8, the peripheral wall portion 6, and the base member 7, thereby producing a photocatalytic effect.
- the air flowing in the vicinity of the inner surface layer can be purified.
- the external air since a large number of air circulation holes are provided in the entire wall portion of the cylindrical main body 2, the external air can be transferred to the cylindrical shape only by flowing the indoor air with a fan or a ventilation fan. It can be purified by flowing into the inside of the main body.
- the light irradiation device 4 extending in the axial direction is provided at the center of the internal space 3 of the cylindrical main body 2, the light irradiation device 4 warms the air in the cylindrical main body.
- the upper member 8 is formed with a large air circulation hole 17, so that an upward air flow is generated in the internal space 3 even when the outside is in a windless state. Due to this updraft, the air in the internal space 3 is discharged through the air flow holes 17 in the upper member 8, and at the same time, external air flows into the internal space 3 from the air flow holes provided in the peripheral wall 6 and the base member 7 Can be made. Therefore, nothing The purifying effect can be exerted even in the wind.
- the powdered titanium oxide is held without using a binder or the like in the gap between the fibers of the surface layer portion of each member constituting the cylindrical main body 2. For this reason, the photocatalyst can be made to act efficiently on the air passing through the vicinity of the surface layer where the surface of the powdery titanium dioxide is not covered with a binder or the like.
- a photocatalyst supporting step of spraying powdered titanium dioxide dispersed in a liquid carrier onto the inner surfaces of the plate material 13, the base member 7 and the upper member 8 formed by a pulp mold is performed.
- water is used as a liquid carrier, and water in which about 3 to 8% by volume of powdered titanium dioxide is dispersed is sprayed on the surface of the plate-like member 13 to obtain 100 Support about 0.7 grams of titanium dioxide per square centimeter.
- the plate-like material 13 is dried outdoors or by a drying device to remove the liquid carrier.
- the peripheral wall 6, the base member 7, and the upper member 8 are assembled to form the cylindrical main body 2.
- the water as a carrier liquid that does not support the powdered titanium dioxide titanium dioxide on the fiber using a binder soaks into the micropores between the fibers in the surface layer portion or in the cellulose fibers. Utilizing the capillary phenomenon, the powdered titanium dioxide is carried and supported between the fibers or in the fine pores of the fibers. As a result, the powdery titanium oxide can be reliably supported on the surface layer portion of the peripheral wall portion 6 without using any binder or the like or in an extremely small amount.
- FIG. 7 schematically shows a structure and an action in which titanium dioxide 19 is supported on the surface layer portion 18 of the plate-like material 13 according to the present embodiment.
- the powdery titanium dioxide 19 is carried to the depth of the surface force of the plate-like material 13, that is, on the surface layer portion 18.
- cellulose fiber has high ultraviolet transmittance, and the porosity of the plate-like member 13 is large.
- the size of the void is much larger than the particle size of the titanium dioxide. Therefore, the light irradiated from the light irradiation device 4 reaches not only the surface 20 of the plate member but also a certain depth.
- the surface layer portion 18 means a range where the light from the light irradiation device 4 reaches. The taste changes depending on the porosity of the porous body.
- the present embodiment it is configured such that a larger amount of titanium dioxide is supported on the surface 20 side where a large amount of light is irradiated. For this reason, the air flowing in the vicinity of the surface layer portion 18 can be efficiently processed. Further, the air flowing through the surface layer portion can enter and exit the fiber gap. Therefore, the photocatalytic action of titanium dioxide with the light supported in a range can be brought out. As a result, the air flowing through the internal space can be efficiently purified.
- the diacid titanium is carried on the inner surfaces of the members 6, 7, and 8 constituting the cylindrical main body 2, the user's fingers are not touched. Further, the most titanium dioxide is supported on the surface layer portion of the recess 9 formed in the peripheral wall portion 6. Therefore, in normal use, the powdered titanium dioxide does not fall off the surface layer force.
- test piece was 50mm x 50mm, and it was left in a constant temperature and humidity room for more than 24 hours.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/658,355 US7935311B2 (en) | 2004-07-26 | 2005-07-25 | Air purifier, air purifying method, formed photocatalyst-supporting member and method of making formed photocatalyst-supporting member |
AT05762059T ATE554798T1 (de) | 2004-07-26 | 2005-07-25 | Luftreiniger, verfahren zur reinigung von luft, einen photokatalysator unterstützender geformter körper und verfahren zur herstellung eines photokatalysator-unterstützenden geformten körpers |
EP05762059A EP1792632B1 (en) | 2004-07-26 | 2005-07-25 | Air purifier, method for purifying air, photocatalyst-supporting formed body, and method for producing photocatalyst-supporting formed body |
KR1020077000689A KR101256890B1 (ko) | 2004-07-26 | 2005-07-25 | 공기정화장치, 공기정화방법, 광촉매담지성형체 및광촉매담지성형체의 제조방법 |
JP2006531391A JP4630872B2 (ja) | 2004-07-26 | 2005-07-25 | 空気浄化装置、空気浄化方法及び光触媒担持成形体 |
CN2005800252919A CN101027089B (zh) | 2004-07-26 | 2005-07-25 | 空气净化装置、空气净化方法、光催化剂担载成形体和光催化剂担载成形体的制造方法 |
HK07114196.6A HK1105799A1 (en) | 2004-07-26 | 2007-12-27 | Air purifier, method for purifying air, photocatalyst-supporting formed body, and method for producing photocatalyst-supporting formed body |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004217042 | 2004-07-26 | ||
JP2004-217042 | 2004-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006018949A1 true WO2006018949A1 (ja) | 2006-02-23 |
Family
ID=35907340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/013552 WO2006018949A1 (ja) | 2004-07-26 | 2005-07-25 | 空気浄化装置、空気浄化方法、光触媒担持成形体及び光触媒担持成形体の製造方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7935311B2 (ja) |
EP (1) | EP1792632B1 (ja) |
JP (1) | JP4630872B2 (ja) |
KR (1) | KR101256890B1 (ja) |
CN (1) | CN101027089B (ja) |
AT (1) | ATE554798T1 (ja) |
HK (1) | HK1105799A1 (ja) |
WO (1) | WO2006018949A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2914558A1 (fr) * | 2007-04-06 | 2008-10-10 | Prod Berger Soc Par Actions Si | Dispositif de traitement d'air par photocatalyse en compartiment |
JP2009094061A (ja) * | 2007-09-21 | 2009-04-30 | Jet Co Ltd | 空気清浄機能付き照明器具 |
WO2012117547A1 (ja) * | 2011-03-03 | 2012-09-07 | 株式会社オー・ティー・エー | 空気清浄装置 |
JP2017001026A (ja) * | 2015-06-05 | 2017-01-05 | ジェット株式会社 | 有害物質分解除去装置、有害物質分解除去方法及びこれを用いた治療用隔離チャンバー |
JP2017033795A (ja) * | 2015-08-03 | 2017-02-09 | シャープ株式会社 | 空気清浄機能を有する照明装置 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1176200A3 (de) | 2000-06-20 | 2005-01-12 | Switch Biotech Aktiengesellschaft | Verwendung von Polypeptiden oder diese kodierende Nukleinsäuren zur Diagnose oder Behandlung von Hauterkrankung oder Wundheilung sowie ihre Verwendung zur Indentifizierung von pharmakologisch aktiven Substanzen |
EP2047870B1 (en) * | 2007-10-08 | 2012-07-25 | Aelorve S.A.S. | Device for photocatalytic treatment of fluids |
US20090098014A1 (en) * | 2007-10-12 | 2009-04-16 | Derek Elden Longstaff | Structure and Method of Air Purification |
ES2371621B1 (es) * | 2009-12-09 | 2013-02-11 | Centro De Investigaciones Energéticas, Medioambientales Y Tecnológicas (Ciemat) | Fotorreactor tubular para fotocatalizadores soportados. |
KR101423325B1 (ko) * | 2012-12-26 | 2014-07-25 | (주)에스이피 | 광촉매를 이용한 공기정화용 모듈 |
CN103191458B (zh) * | 2013-04-24 | 2016-12-28 | 苏州吴盛环保科技有限公司 | 一种光催化杀菌除臭装置的光催化板 |
CN105854494A (zh) * | 2016-06-01 | 2016-08-17 | 广东绿由环保设备有限公司 | 污泥制陶粒烟气处理系统 |
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US5881353A (en) * | 1994-03-31 | 1999-03-09 | Hitachi Chemical Company, Ltd. | Method for producing porous bodies |
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JP2003148774A (ja) * | 2001-11-12 | 2003-05-21 | Toyo Living Kk | 低湿保管庫 |
CN2518586Y (zh) * | 2001-12-14 | 2002-10-30 | 伍本银 | 一种新型催化剂载体 |
CN1139424C (zh) * | 2002-11-13 | 2004-02-25 | 武汉理工大学 | 高吸附性光催化剂及载体材料 |
US7988923B2 (en) * | 2004-02-23 | 2011-08-02 | Rgf Environmental Group, Inc. | Device, system and method for an advanced oxidation process using photohydroionization |
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2005
- 2005-07-25 JP JP2006531391A patent/JP4630872B2/ja not_active Expired - Fee Related
- 2005-07-25 US US11/658,355 patent/US7935311B2/en not_active Expired - Fee Related
- 2005-07-25 KR KR1020077000689A patent/KR101256890B1/ko active IP Right Grant
- 2005-07-25 EP EP05762059A patent/EP1792632B1/en not_active Not-in-force
- 2005-07-25 CN CN2005800252919A patent/CN101027089B/zh not_active Expired - Fee Related
- 2005-07-25 AT AT05762059T patent/ATE554798T1/de active
- 2005-07-25 WO PCT/JP2005/013552 patent/WO2006018949A1/ja active Application Filing
-
2007
- 2007-12-27 HK HK07114196.6A patent/HK1105799A1/xx not_active IP Right Cessation
Patent Citations (3)
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JP2000070355A (ja) * | 1998-09-01 | 2000-03-07 | Jiyunsuke Nakamura | 脱臭装置 |
JP2000279761A (ja) * | 1999-03-30 | 2000-10-10 | Mitsubishi Paper Mills Ltd | 空気浄化方法 |
JP3098059U (ja) * | 2003-05-26 | 2004-02-19 | 邱 丁金 | 光触媒装置 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2914558A1 (fr) * | 2007-04-06 | 2008-10-10 | Prod Berger Soc Par Actions Si | Dispositif de traitement d'air par photocatalyse en compartiment |
JP2009094061A (ja) * | 2007-09-21 | 2009-04-30 | Jet Co Ltd | 空気清浄機能付き照明器具 |
WO2012117547A1 (ja) * | 2011-03-03 | 2012-09-07 | 株式会社オー・ティー・エー | 空気清浄装置 |
JP2017001026A (ja) * | 2015-06-05 | 2017-01-05 | ジェット株式会社 | 有害物質分解除去装置、有害物質分解除去方法及びこれを用いた治療用隔離チャンバー |
JP2017033795A (ja) * | 2015-08-03 | 2017-02-09 | シャープ株式会社 | 空気清浄機能を有する照明装置 |
Also Published As
Publication number | Publication date |
---|---|
KR101256890B1 (ko) | 2013-04-22 |
US7935311B2 (en) | 2011-05-03 |
ATE554798T1 (de) | 2012-05-15 |
EP1792632B1 (en) | 2012-04-25 |
CN101027089A (zh) | 2007-08-29 |
US20080310993A1 (en) | 2008-12-18 |
HK1105799A1 (en) | 2008-02-22 |
JP4630872B2 (ja) | 2011-02-09 |
EP1792632A4 (en) | 2009-12-02 |
KR20070042964A (ko) | 2007-04-24 |
JPWO2006018949A1 (ja) | 2008-07-31 |
CN101027089B (zh) | 2011-06-15 |
EP1792632A1 (en) | 2007-06-06 |
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