WO1997028902A1 - Epuratrice d'air par effet electrostatique - Google Patents

Epuratrice d'air par effet electrostatique Download PDF

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Publication number
WO1997028902A1
WO1997028902A1 PCT/JP1997/000310 JP9700310W WO9728902A1 WO 1997028902 A1 WO1997028902 A1 WO 1997028902A1 JP 9700310 W JP9700310 W JP 9700310W WO 9728902 A1 WO9728902 A1 WO 9728902A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
counter electrode
electrostatic air
dust
air purifier
Prior art date
Application number
PCT/JP1997/000310
Other languages
English (en)
Japanese (ja)
Inventor
Yoshikazu Terasawa
Original Assignee
Atten Corporation
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 JP5993896A external-priority patent/JPH09215945A/ja
Priority claimed from JP8702996A external-priority patent/JPH09239289A/ja
Application filed by Atten Corporation filed Critical Atten Corporation
Publication of WO1997028902A1 publication Critical patent/WO1997028902A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
    • B03C3/155—Filtration
    • 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
    • B01D53/02—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 by adsorption, e.g. preparative gas chromatography
    • B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents

Definitions

  • the present invention relates to an air purifier capable of adsorbing harmful gases and dust in the air and deodorizing odors, and more particularly to an electrostatic air purifier without a blower.
  • a conventional electrostatic air cleaning device without a blower has a discharge electrode and a counter electrode, and is generated toward the counter electrode by using a dust collecting paper layered on the counter electrode. ion wind is configured to be attracted to the dust force s current supply of tissues in the air, such as by electric force (or a Coulomb force).
  • a polarity of the discharge electrode is made negative, ozone is generated with the discharge, and this ozone is used together with dust collection to oxidize and decompose some offensive odor gases.
  • the type of odorous gas subject to oxidative decomposition is limited, and the dust collection performance is proportional to the amount of ozone generated.
  • the present invention has been made in view of the above-mentioned circumstances in the related art, and a first object of the present invention is to provide a gas removal capability on the counter electrode side and to provide a gas exhibiting the gas removal capability.
  • the air is forced to circulate by generating ionic wind without using a blower.
  • the aim is to provide an electrostatic air purifier that does not generate unpleasant noise or wind, consumes little power, and has excellent gas removal performance economically.
  • a second object of the present invention is to prevent the concentration of ozone generated during discharge from becoming too high even when the polarity of the discharge electrode is negative, and to prevent oxidative decomposition by ozone.
  • An object of the present invention is to provide an electrostatic air purifier capable of removing harmful gases that do not work effectively.
  • a static electrode comprising a discharge electrode and a counter electrode, and a gas adsorbing means having a gas removing capability provided on the counter electrode side.
  • An electric air cleaner is provided.
  • the counter electrode itself may be a gas adsorbing means having the gas removing ability.
  • a plurality of types of gas adsorbing means each having a gas removing ability can be arranged on the arrangement surface of the counter electrode adjacent to the counter electrode. Further, a gas-permeable dust-collecting paper is adhered to and adhered to the upper surface of the gas adsorbing means, and harmful gas in air is separated and adsorbed on the gas adsorbing means, and dust is separated and adsorbed on the dust-collecting paper. You can do so.
  • the gas adsorption means is made of a material containing activated carbon or activated carbon fiber as a conductive component.
  • the gas adsorbing means has an electrically insulating gas adsorbent and a plurality of openings so that a gas adsorbing surface of the gas adsorbent is partially exposed, and covers the gas adsorbent.
  • a conductive plate serving as the counter electrode by being provided.
  • the electrically insulating gas adsorbent can be a felt containing zeolite powder.
  • the conductive plate can be a metal plate.
  • the electrostatic air purifier of the present invention has a structure in which a discharge electrode of a wire or wire and a planar counter electrode are arranged at a certain space distance, and a high potential difference is generated between these two electrodes.
  • a corona discharge sient discharge
  • ion wind is generated from the discharge electrode toward the counter electrode, so that charged dust and harmful gas flow toward the counter electrode, and are adsorbed on the counter electrode and the gas adsorbent. It utilizes the phenomenon that it can be performed.
  • the material is electrically conductive and has a gas adsorption capacity, such as activated carbon, it can be used as a gas adsorbent that also serves as the counter electrode.
  • a gas adsorption capacity such as activated carbon
  • a metal plate having a large number of holes such as a metal plate
  • a gas adsorbent is coated with this metal plate.
  • the harmful gases carried one after another by the ion wind are absorbed by the gas adsorbent by physical attraction through the holes formed in the metal plate, and the dust is mainly absorbed by the counter electrode by the Coulomb force.
  • the gas adsorbent is electrically insulative, the gas adsorbent is charged by the high voltage applied to the discharge electrode and the counter electrode, and dust is also adsorbed by the gas adsorbent by Coulomb force, It comes to adhere to the surface of the adsorbent.
  • the corona discharge generates ozone with oxidizing power, which oxidizes and decomposes the odorous gas in the air and simultaneously adsorbs the gas.
  • the odorous gas adsorbed on the material is oxidatively decomposed to prolong the adsorption life of the gas adsorbent.
  • the gas adsorbent is activated carbon or activated carbon fiber furt
  • the generated ozone comes into contact with the activated carbon and is decomposed into carbon dioxide and oxygen, so that the surrounding air does not have an excessive ozone concentration.
  • an electrostatic air purifier that does not have an unpleasant sound or wind because it does not have a blower, and that has low power consumption and is economical. Become. Because there is no unpleasant noise or wind, it can be driven even during sleep, and can be operated continuously throughout the year to save electricity costs. Force is also a discharge electrode If these discharges have negative polarity, the ozone concentration in the surrounding air will be excessively high, and the power will be reduced accordingly. Enhancing the power s becomes possible.
  • FIG. 1 is a perspective view showing a schematic configuration of a first embodiment of the present invention
  • FIG. 2A is a perspective view showing a schematic configuration of a second embodiment of the present invention
  • FIG. 2B is a cross-sectional view of a main part in the second embodiment shown in FIG. 2A
  • FIG. 3 is a perspective view showing a schematic configuration of a third embodiment of the present invention
  • FIG. 4 is a perspective view showing a modified example of each of the first to third embodiments of the present invention
  • FIG. 5 shows the performance of removing dioxide dioxide according to the third embodiment shown in FIG. Graph
  • FIG. 6 is a graph showing the performance of the effect of suppressing ozone concentration in ambient air according to the third embodiment shown in FIG.
  • FIG. 1 is a perspective view showing a schematic configuration of a first embodiment of the present invention.
  • a flat plate serving as a gas adsorbent containing activated carbon fibers having a gas removing ability as a conductive component is provided on a flat surface 2 formed in front of an ABS resin housing 1.
  • the felt 3 is fixed and arranged, and the discharge electrode wire 4 is arranged at a substantially central portion of the felt 3 at a space distance of 2 mm to 3 O mm from the surface of the felt 3, and the casing 1 is provided.
  • Fel in the first embodiment Unit 3 serves as a gas adsorbent, and also contains active carbon fiber as a conductive component, and the voltage applied to it is high, so it serves as a counter electrode as a conductor. Also fulfills. In such a state, a nearly silent corona discharge is generated from the discharge electrode wire 4, and a negative charge is given to gas and dust in the air around the discharge electrode wire 4.
  • reference numeral 3a is a frame for attaching the filter 3 to the flat portion 2.
  • Reference numeral 10 denotes a cover attached to the front surface of the housing 1, which is common to other embodiments described later.
  • FIGS. 2A and 2B are a perspective view showing a schematic configuration of a second embodiment of the present invention and a cross-sectional view of a main part thereof.
  • a flat plate as a gas adsorbent containing zeolite powder and having an electric insulating property and a gas removing ability is provided on the surface of the flat portion 2 of the casing 1 made of ABS resin.
  • a filter 5 is arranged, and a metal plate 31 as a counter electrode further provided with a number of holes thereon is fixed to the flat portion 2 so as to overlap the felt 5.
  • Discharge electrode wires 4 are arranged at a spatial distance of 20 to 3 O mm from metal plate 3 1, and a positive high-voltage output from a high-voltage power supply (not shown) built in housing 1 3 1, on the other hand, the negative high-voltage output is guided to the discharge electrode wire 4, causing a corona discharge from the discharge electrode wire 4, which removes gas and dust in the air around the discharge electrode wire 4. Negative charge is given. As a result, ion wind blows toward the metal plate 31 to which a positive high voltage is applied, and the gas given a negative charge is adsorbed to the filter 5 as a gas adsorbent by physical adsorption force. Is done. Dust given a negative charge is adsorbed on the metal plate 31 by Coulomb force.
  • Filter 5 which is a gas adsorbent, is electrically insulating. Since it is located very close to be in contact with the metal plate 31 to which a positive high voltage is applied, it is charged by the influence of the high voltage. Therefore, the negatively charged dust is also adsorbed and adhered to the felt 5.
  • a tungsten wire having a wire diameter of 0.1 mm is used as the discharge electrode wire 4, and the counter electrode 3 or 31 has a plane dimension of 200 mm X 200 O mm, the applied voltage to the discharge electrode wire 4 is negative 7 kV, the applied voltage to the counter electrode 3 or 31 is positive 7 kV, the power consumption at that time is 3.5 kb, and the ionic wind volume is The sound was 0.4 m 3 per minute, and the sound was only discharge sound and 26 phones. Subsequently, a third embodiment of the present invention will be described with reference to FIG. In FIG. In FIG.
  • a flat counter electrode 32 made of an aluminum alloy is fixedly disposed substantially at the center of a plane portion 2 formed on the front surface of a housing 1 made of an ABS resin.
  • a discharge electrode wire 4 is provided in parallel with the counter electrode 32 at a space distance of about 35 mm from the surface of the housing 1, and a positive voltage is applied from the high-voltage power supply device (not shown) built in the housing 1.
  • the high voltage output is guided to the counter electrode 32, while the negative high voltage output is guided to the discharge electrode wire 4.
  • the flat surface 2 extending on both sides of the counter electrode 32 has a flat felt 5 mainly composed of activated carbon fiber having a gas removing ability at a predetermined distance from the counter electrode 32. -1, 5-2, 6-1, 6-2 are fixedly arranged.
  • filters 5-1 and 5-2 have the ability to adsorb gases such as nitrogen dioxide and sulfur dioxide in the air
  • felts 6-1 and 6-2 have the ability to adsorb gases such as nitrogen dioxide and sulfur dioxide.
  • four flat felts are arranged, but the number of felts is not limited to this, and several filters for adsorbing other gas are provided. You may mix and distribute.
  • the ozone generated by the negative discharge oxidizes and decomposes the gas that can be oxidized and decomposed by the ozone, and then returns to harmless oxygen.
  • it gradually accumulates and the ozone concentration in the indoor space increases. It has been pointed out that considering the half-life of ozone, it is possible that it will exceed the limit of exposure to living organisms, if not increase indefinitely. Therefore, in the third embodiment, a felt 6--6-2 having the ability to decompose ozone is provided so as to play a role of decomposing excess ozone not consumed by oxidative decomposition. .
  • the felts 6-1 and 6-2 are made into activated carbon or a furt containing activated carbon fiber as a main component, and surplus ozone is brought into contact with the activated carbon to form carbon dioxide and oxygen. It is being decomposed. With this configuration, it is possible to suppress an increase in the concentration of ozone in a room.
  • a tungsten wire having a wire diameter of 0.1 mm is used for the discharge electrode wire 4, and the counter electrode 32 has a plane dimension of 3 O mm ⁇ 200 mm,
  • the voltage applied to the wire 4 was 7 kV negative
  • the voltage applied to the counter electrode 32 was 7 kV positive
  • the power consumption was 3.5 watts
  • the flow rate of the ion wind was 0.4 m / min. 3.
  • the sound was only discharge sound and 26 phones.
  • FIG. 4 is a perspective view showing a schematic configuration of a modification example common to each of the first to third embodiments shown in FIG. 1 to FIG. That is, in the first embodiment, the upper surface of the flute 3 having both the counter electrode and the gas adsorbent having a gas removing ability, and in the second embodiment, the upper surface of the metal plate 31 serving as the opposite electrode,
  • a gas is applied so as to cover the counter electrode 32 and the felts 5-1 to 5-2.
  • the dust is separated and adsorbed on the dust collecting paper 7 and filtered, so that the dust adhering to the felt as the gas adsorbent is greatly reduced, and the life of the felt as the gas adsorbent is extended.
  • the price of the dust collector 7 is generally much lower, and it is economical even if the dust collector 7 is disposable.
  • the dust collecting paper 7 used in the present modification is not limited to synthetic paper made of polyester, but may be any paper as long as it is gas-permeable.
  • FIG. 5 is a graph showing the removal performance of carbon dioxide according to the third embodiment, in which the solid line shows the removal performance of the present invention, and the dotted line shows the spontaneous decay of sulfur dioxide for comparison. I have.
  • FIG. 6 is also a graph showing the effect of suppressing ozone concentration increase according to the third embodiment, in which the solid line shows the change in ozone concentration over time according to the present invention, and the dotted line shows the ozone concentration for comparison.
  • the figure shows the transition of the ozone concentration in the case of not wearing the decomposition furt. From this graph, it can be seen that the embodiment of the present invention equipped with the ozonolysis felt is remarkable with the passage of time, and exhibits an inhibitory effect.

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  • Electrostatic Separation (AREA)

Abstract

La présente invention concerne une épuratrice d'air par effet électrostatique constituée d'une électrode de décharge (4), d'une contre-électrode (3, 31 ou 32), et, disposé du côté de la contre-électrode, d'un organe d'adsorption de gaz capable d'éliminer des gaz. La poussière de l'air est adsorbée vers la contre-électrode et/ou l'organe d'adsorption de gaz, la force coulombienne provoquant, sans qu'il y ait besoin de soufflante, une décharge par effet couronne depuis le fil d'électrode de décharge (4) vers la contre-électrode. En outre, la force physique d'adsorption et/ou à la force coulombienne provoquent l'adsorption des gaz nocifs de l'air vers des éléments adsorbeurs de gaz (3, 5, ou 5-1 à 6-2) constituant les organes d'adsorption de gaz. Les éléments adsorbeurs de gaz peuvent également être garnis de papiers adsorbeurs de poussières.
PCT/JP1997/000310 1996-02-09 1997-02-07 Epuratrice d'air par effet electrostatique WO1997028902A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP8/59938 1996-02-09
JP5993896A JPH09215945A (ja) 1996-02-09 1996-02-09 静電式ガス吸着機
JP8702996A JPH09239289A (ja) 1996-03-05 1996-03-05 静電式空気清浄機
JP8/87029 1996-03-05

Publications (1)

Publication Number Publication Date
WO1997028902A1 true WO1997028902A1 (fr) 1997-08-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/000310 WO1997028902A1 (fr) 1996-02-09 1997-02-07 Epuratrice d'air par effet electrostatique

Country Status (1)

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WO (1) WO1997028902A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52160884U (fr) * 1976-06-01 1977-12-06
JPS5535918A (en) * 1978-09-05 1980-03-13 Denki Onkyo Co Ltd Electric precipitator
JPS57187655U (fr) * 1981-05-26 1982-11-29
JPS6148058U (ja) * 1984-08-31 1986-03-31 カルソニックカンセイ株式会社 イオン風式空気清浄器
JPH057797A (ja) * 1991-07-08 1993-01-19 Matsushita Electric Ind Co Ltd 空気清浄器
JPH0716579B2 (ja) * 1989-02-28 1995-03-01 株式会社日立製作所 脱臭装置
JPH07109673A (ja) * 1993-10-13 1995-04-25 P F C:Kk 機能性繊維材料
JPH07256140A (ja) * 1994-03-23 1995-10-09 Daikin Ind Ltd 空気清浄機およびそれに用いる静電フィルタ
JPH07256145A (ja) * 1994-03-25 1995-10-09 Kankiyoo:Kk 空気清浄器

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52160884U (fr) * 1976-06-01 1977-12-06
JPS5535918A (en) * 1978-09-05 1980-03-13 Denki Onkyo Co Ltd Electric precipitator
JPS57187655U (fr) * 1981-05-26 1982-11-29
JPS6148058U (ja) * 1984-08-31 1986-03-31 カルソニックカンセイ株式会社 イオン風式空気清浄器
JPH0716579B2 (ja) * 1989-02-28 1995-03-01 株式会社日立製作所 脱臭装置
JPH057797A (ja) * 1991-07-08 1993-01-19 Matsushita Electric Ind Co Ltd 空気清浄器
JPH07109673A (ja) * 1993-10-13 1995-04-25 P F C:Kk 機能性繊維材料
JPH07256140A (ja) * 1994-03-23 1995-10-09 Daikin Ind Ltd 空気清浄機およびそれに用いる静電フィルタ
JPH07256145A (ja) * 1994-03-25 1995-10-09 Kankiyoo:Kk 空気清浄器

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