WO2021131519A1 - 電気集塵機 - Google Patents

電気集塵機 Download PDF

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Publication number
WO2021131519A1
WO2021131519A1 PCT/JP2020/044523 JP2020044523W WO2021131519A1 WO 2021131519 A1 WO2021131519 A1 WO 2021131519A1 JP 2020044523 W JP2020044523 W JP 2020044523W WO 2021131519 A1 WO2021131519 A1 WO 2021131519A1
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WIPO (PCT)
Prior art keywords
dust
voltage
electrostatic precipitator
electrode
dust collecting
Prior art date
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Ceased
Application number
PCT/JP2020/044523
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English (en)
French (fr)
Japanese (ja)
Inventor
喬彬 長谷川
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Creative Technology Corp
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Creative Technology Corp
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Publication date
Application filed by Creative Technology Corp filed Critical Creative Technology Corp
Priority to JP2021567106A priority Critical patent/JP7541364B2/ja
Priority to KR1020227020821A priority patent/KR20220113718A/ko
Priority to CN202080090304.5A priority patent/CN114901397B/zh
Priority to US17/788,795 priority patent/US12551902B2/en
Priority to EP20908122.3A priority patent/EP4084243A4/en
Publication of WO2021131519A1 publication Critical patent/WO2021131519A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes
    • 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
    • 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
    • B03C3/12—Plant or installations having external electricity supply dry type characterised by separation of ionising and collecting stations
    • 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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
    • 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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/60—Use of special materials other than liquids
    • 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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/60—Use of special materials other than liquids
    • B03C3/64—Use of special materials other than liquids synthetic resins
    • 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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/66—Applications of electricity supply techniques
    • B03C3/70—Applications of electricity supply techniques insulating in electric separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T19/00—Devices providing for corona discharge
    • H01T19/04—Devices providing for corona discharge having pointed electrodes
    • 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
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/06—Ionising electrode being a needle
    • 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
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/10—Ionising electrode with two or more serrated ends or sides
    • 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
    • Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

Definitions

  • the present invention relates to an electrostatic precipitator that collects dust in the air using an electric field.
  • the electrostatic precipitator includes a one-stage electrostatic precipitator and a two-stage electrostatic precipitator.
  • the one-stage electrostatic precipitator collects dust in the air directly on the dust collector by using the ionization part as a high-pressure electrode and the dust collector as a counter electrode. It has a structure. For this reason, the one-stage electrostatic precipitator has a simple structure and can collect dust without power, and is often used as a small or thin electrostatic precipitator.
  • the two-stage electrostatic precipitator has an ionizing unit for charging dust, a high-voltage electrode for collecting dust charged by an electric field, and a dust collecting plate, as described in Patent Documents 3 and 4. It has a structure divided into two stages with a dust collecting part.
  • a technique is adopted in which a dust collecting plate or a high-voltage electrode is made of a semi-insulating material to prevent a decrease in dust collecting efficiency due to spark discharge.
  • the one-stage electrostatic precipitator disclosed in Patent Document 1 can obtain a spread of the electric field, but has a drawback that the Coulomb force is weakened because the source of the electric field is far away. With such a weak Coulomb force, the dust that can be collected is limited to small dust. Further, with a weak Coulomb force, it is difficult to strongly retain the dust on the dust collecting plate, and the dust may be peeled off by wind or the like. Therefore, there is a problem that the air is polluted again by the separated dust. Further, in the one-stage electrostatic precipitator disclosed in Patent Document 2, a strong electric field can be obtained, but the generation of the electric field is limited between the discharge electrode and the dust collecting plate.
  • the two-stage electrostatic precipitator has a wider dust collection range and extremely high dust collection capacity than the one-stage electrostatic precipitator, but the ionization unit and the dust collector are separated to prevent spark discharge. Need to be placed. Therefore, it is necessary to have power to drive them, and it is necessary to linearly connect the devices such as the ionization section including other units such as the ozone treatment device. As a result, in the two-stage electrostatic precipitator, the equipment itself becomes large, and this two-stage electrostatic precipitator cannot be used as a local dust collector for only a part of the process. ..
  • the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an electric dust collector having a wide dust collecting range, a high dust collecting ability, and being able to be miniaturized and thinned.
  • the first invention is an electrostatic dust collector including an ionizing unit for generating ions and a dust collecting unit for electrically collecting dust to which ions are attached.
  • the ionizing section is an ionizer that generates ions having the same polarity as the applied voltage by applying a predetermined voltage to the electrode needle to discharge the corona, and the dust collecting section is arranged after the ionizing section.
  • a high-voltage electrode having a plurality of gaps for passing dust to which ions are attached and to which a predetermined voltage is applied, and a voltage arranged after the high-voltage electrode and applied to the high-voltage electrode.
  • a dust collecting plate for electrically adsorbing dust to which ions are attached is provided, and the polarity of the voltage applied to the electrode needle of the ionization unit and the voltage applied to the high-voltage electrode are The polarity is set to the same polarity, the high-voltage electrode of the dust collecting part is covered with an insulator, and the dust collecting plate is covered with an insulator separate from the insulator.
  • a large amount of ions are generated from the ionization part.
  • a voltage having the same polarity as the ions is applied to the high-voltage electrode arranged after the ionization section, a large amount of ions are repelled by the high-voltage electrode and move to the dust collecting plate side. It is suppressed. That is, a high-voltage electrode having the same polarity as the ions is interposed between the ionization section and the dust collecting plate to prevent a direct electric field from being created between the ionization section and the dust collecting plate. As a result, a large amount of ions diffuse widely in front of the high-voltage electrode without facing the dust collecting plate side, and adhere to a wide range of dust.
  • the electrostatic precipitator of the present invention has the ability to charge dust in a wide range and efficiently collect a large amount of charged dust by a strong electric field.
  • spark discharge may occur and ozone may be generated.
  • the dust collection efficiency may be lowered.
  • the high voltage electrode is interposed between the ionizing section and the dust collecting plate, and the polarity of the voltage applied to the ionizing section and the voltage applied to the high voltage electrode are different. Since the polarity is set to the same polarity, an electric field is not directly generated between the ionizing part and the dust collecting plate. Therefore, almost no spark discharge occurs. Moreover, since the high-voltage electrode and the dust collecting plate are covered with an insulator, it is possible to reliably prevent the occurrence of spark discharge.
  • the high-voltage electrodes of the dust collector are formed of a plurality of linear conductors arranged in parallel at predetermined intervals and each of which is coated with an insulator.
  • the dust collecting plate of the dust collecting part is formed of a flat conductor coated with an insulating resin film.
  • the volume resistivity of the resin film is set within the range of 10 10 ⁇ / cm 3 to 10 13 ⁇ / cm 3 , and the thickness thereof is set.
  • the configuration is set to approximately 0.1 mm, and the distance from the ionization unit to the dust collection plate of the dust collection unit is set to 100 mm or less.
  • the distance between the plurality of linear conductors forming the high voltage electrode is set within the range of 40 mm to 100 mm, and the plurality of wires are set.
  • the distance between the high-voltage electrode formed of the shaped conductor and the dust collecting plate is set within the range of 10 mm to 80 mm, and the distance from the electrode needle of the ionization part to the dust collecting plate of the dust collecting part is 30 mm to 100 mm.
  • the configuration is set within the range.
  • the fifth invention is the electrostatic precipitator according to any one of the second invention to the fourth invention, wherein the ionizer is a DC ionizer that generates ions by applying a DC voltage, and is a high voltage electrode and a dust collector.
  • the voltage applied to the board is a DC voltage having opposite polarities.
  • the electrostatic precipitator of the present invention it is possible to charge a wide range of dust and collect a large amount of charged dust with a strong electric field. Furthermore, by setting the voltage polarity of the high-voltage electrode of the ionization section to the same polarity and covering the high-voltage electrode and the dust collecting plate with an insulator, it is possible to reliably prevent the occurrence of spark discharge. A device such as an ozone treatment device is no longer required, and the entire device can be made smaller and thinner. That is, according to the electrostatic precipitator of the present invention, there is an excellent effect that a wide dust collecting range and a high dust collecting capacity can be secured, and moreover, miniaturization and thinning can be realized.
  • the dust collecting ability and the effect of preventing spark discharge can be further enhanced.
  • the device can be further miniaturized and thinned.
  • FIG. 1 is a cross-sectional view taken along the line AA of FIG. It is an exploded perspective view of the electrostatic precipitator of FIG. It is sectional drawing which shows the ion generation state by an ionization part 3.
  • FIG. It is sectional drawing which shows the dust collection state of the charged dust from above. It is an exploded view for demonstrating the electrostatic precipitator which concerns on 2nd Embodiment of this invention. It is a top view which shows one modification of the high voltage electrode. It is a top view which shows the other modification of the high voltage electrode.
  • FIG. 1 is a perspective view showing an electrostatic precipitator according to a first embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along the line AA of FIG. It is an exploded perspective view of the electrostatic precipitator of FIG. 1 shown.
  • the electrostatic precipitator 1 of this embodiment has a structure in which an ionizing unit 3 and a dust collecting unit 4 are incorporated in a case 2.
  • the case 2 is an insulating quadrangular frame with the front (front side in FIG. 1) and the rear (rear side in FIG. 1) open, the ionizing portion 3 is in the front stage of the case 2, and the dust collecting portion 4 is in the case 2. It is assembled from the middle to the back.
  • the ionization unit 3 is a portion for generating ions, and is composed of an ionizer 30 and a power supply 10.
  • the ionizer 30 is attached to the center of the front end of the lower surface of the upper frame 21 of the case 2.
  • the ionizer 30 is a DC ionizer and has an electrode needle 30a inside as shown in FIG.
  • the tip of the electrode needle 30a is arranged downward, and the rear end is connected to the positive electrode 10a of the power supply 10 that generates a DC voltage. That is, the DC voltage of the positive electrode from the power supply 10 is applied to the electrode needle 30a of the ionizer 30.
  • a corona discharge can be generated at the tip of the electrode needle 30a, and the air existing around the electrode needle 30a can be electrically decomposed to generate positive electrode ions.
  • the voltage applied to the electrode needle 30a to generate ions usually needs to be in the range of 3 kV to 6 kV. That is, as the power supply 10, a DC power supply in the range of 3 kV to 6 kV was used.
  • the polarity of the voltage applied to the electrode needle 30a is arbitrary, but in this embodiment, the DC voltage of the positive electrode is set to be applied. That is, the direction of the electrode needle 30a and the voltage of the power supply 10 are set so that the ions of the positive electrode diffuse in front of the dust collecting portion 4 in parallel with the surface of the dust collecting portion 4.
  • the dust collecting unit 4 is a part for electrically collecting dust to which ions are attached, and is composed of a high voltage electrode 5 in the front stage and a dust collecting plate 6 in the rear stage.
  • the high-voltage electrode 5 of the dust collecting unit 4 is a plurality of linear conductors 50 arranged after the ionization unit 3, and is connected to the power supply 10. As shown in FIG. 3, the plurality of linear conductors 50 are arranged side by side and parallel at predetermined intervals in an upright state. This interval, that is, each interval G in which the plurality of linear conductors 50 are arranged side by side is a gap for passing dust to which ions are attached, and is set within the range of 40 mm to 100 mm.
  • Each of the plurality of linear conductors 50 is covered with an insulator 51. It is desirable that such a linear conductor 50 is as thin as possible and has a performance capable of withstanding a high voltage.
  • the linear conductor 50 is preferably copper, nickel, or an alloy thereof, and the insulator 51 is preferably silicon.
  • the upper end 50a of such a linear conductor 50 is connected to a strip-shaped conductor 52a provided on the lower surface of the upper frame 21 of the case 2, and the strip-shaped conductor 52a is connected to the positive electrode 10a of the power supply 10.
  • the DC voltage of the positive electrode from the power supply 10 is applied to the plurality of linear conductors 50. That is, as shown in FIG. 2, in the electrostatic precipitator 1 of this embodiment, the DC voltage applied to the electrode needle 30a of the ionizer 30 and the plurality of linear conductors 50 is set to the same polarity and the same voltage value. ..
  • the DC voltage applied to the electrode needles 30a of the ionizer 30 and the plurality of linear conductors 50 is set to the same voltage value, but if they have the same polarity, they can be set to different voltage values. Of course.
  • the dust collecting plate 6 of the dust collecting unit 4 is a flat plate-shaped conductor arranged after the high voltage electrode 5, and is connected to the power supply 10.
  • the dust collecting plate 6 is arranged to be rearward by a predetermined distance from the high voltage electrode 5 in a state of standing perpendicular to the dust collecting direction (right direction in FIG. 2).
  • the distance L1 from the electrode needle 30a of the ionizer 30 to the dust collecting plate 6 is set within the range of 30 mm to 100 mm
  • the distance L2 from the high voltage electrode 5 to the dust collecting plate 6 is set. Is set within the range of 10 mm to 80 mm.
  • the dust collecting plate 6 is covered with an insulator 61 that is separate from the insulator 51 of the linear conductor 50.
  • the insulator 61 is an insulating resin film such as PET (polyethylene terephthalate).
  • the volume resistivity of the insulator 61 is set in the range of 10 10 ⁇ / cm 3 to 10 13 ⁇ / cm 3 , and the thickness thereof is set to approximately 0.1 mm.
  • a conductor such as a metal such as a copper foil or an aluminum foil or a conductor such as carbon can be applied.
  • the upper end 6a of the dust collecting plate 6 coated with the insulator 61 is connected to the terminal 62a provided behind the lower surface of the upper frame 21 of the case 2, and the terminal 62a is a power source. It is connected to the negative electrode 10b of 10.
  • the DC voltage of the negative electrode from the power supply 10 is applied to the dust collecting plate 6. That is, in the electrostatic precipitator 1 of this embodiment, a DC voltage having a polarity opposite to the polarity of the voltage applied to the high voltage electrode 5 is set to be applied to the dust collector plate 6.
  • This voltage value is a voltage value in the range of ⁇ 500 V to 5 kV.
  • FIG. 4 is a cross-sectional view showing an ion generation state by the ionization unit 3
  • FIG. 5 is a cross-sectional view showing a dust collection state of charged dust from above.
  • the DC voltage of the positive electrode of the power supply 10 is applied to the electrode needle 30a of the ionizer 30 and the linear conductor 50 of the high voltage electrode 5, and the DC voltage of the negative electrode is applied to the dust collecting plate 6. Then, by applying the DC voltage of the positive electrode to the electrode needle 30a of the ionizer 30, as shown in FIG.
  • ions I of the positive electrode are generated at the tip portion of the electrode needle 30a, and a large amount of ions I are diffused to the surroundings.
  • the ion I tries to be drawn into the dust collecting plate 6, but since the DC voltage of the positive electrode having the same polarity as the ion I is applied to the linear conductor 50 of the high voltage electrode 5, the ion I The movement of the dust to the dust collecting plate 6 side is suppressed by the linear conductor 50 having the same polarity. That is, since the linear conductor 50 to which the voltage having the same polarity as the ion I is applied is interposed between the ionizer 30 and the dust collecting plate 6, it is between the electrode needle 30a of the ionizer 30 and the dust collecting plate 6.
  • the inventors conducted a dust collection capacity comparison experiment between the electrostatic precipitator 1 of this embodiment and a conventional electrostatic precipitator in which the high voltage electrode 5 was removed from the electrostatic precipitator 1. Then, in the conventional electrostatic precipitator, only the dust in the range from the ionizer 30 mm of the ionizing unit 3 to the radius of about 100 mm could be collected. On the other hand, the electrostatic precipitator 1 of this embodiment was able to collect dust in the range of 30 mm to 400 mm or more of the ionizer. As a result, the inventors could confirm that the electrostatic precipitator 1 of this embodiment has a very wide dust collection range and dust collection capacity as compared with the conventional electrostatic precipitator.
  • a plurality of linear conductors 50 which are high voltage electrodes 5, are interposed between the ionizer 30 and the dust collector plate 6, and the polarity of the DC voltage applied to the ionizer 30.
  • the polarity of the DC voltage applied to the linear conductor 50 are set to the same polarity, so that an electric field is not directly generated between the ionizer 30 and the dust collecting plate 6. Therefore, almost no spark discharge occurs.
  • the linear conductor 50 of the high voltage electrode 5 is covered with the insulator 51 and the dust collecting plate 6 is covered with the insulator 61, the generation of spark discharge can be greatly suppressed and the generation of ozone is generated. It can be prevented.
  • the inventors have driven the electrostatic collector 1 of this embodiment under the conditions of room temperature of 20 ° C. and air volume of 20 L / min. It was confirmed that it was 0.001 ppm or less and could not be detected.
  • an apparatus such as an ozone treatment apparatus is not required, it is possible to provide an electric dust collector 1 having a thickness of 100 mm or less, which is small and thin, and has a high dust collection range and dust collection ability. ..
  • FIG. 6 is an exploded view for explaining the electrostatic precipitator according to the second embodiment of the present invention.
  • the electrostatic precipitator of this embodiment is different from the first embodiment in the electrical connection structure of the high voltage electrode and the electrical connection structure of the ionizer. That is, in the first embodiment, a high voltage electrode having a structure in which a plurality of linear conductors 50 are connected in parallel to the positive electrode 10a of the power supply 10 through the strip conductor 52a is illustrated, but in this embodiment, as shown in FIG. In addition, one linear conductor 50 connected to the positive electrode 10a of the power supply 10 was applied as a high voltage electrode.
  • a plurality of holes 23 are provided in the upper frame 21 and the lower frame 22 of the case 2, and one linear conductor 50 coated with an insulator 51 (not shown) is provided with a shoelace in these holes 23. I passed it in a meandering manner. Then, by connecting the base end 50a of the linear conductor 50 to the positive electrode 10a of the power supply 10, a high voltage electrode having the same function as the high voltage electrode of the first embodiment was constructed. Further, in the first embodiment, the ionizer 30 of the ionization unit 3 is supplied with an electric wire from the positive electrode 10a of the power supply 10.
  • the linear conductor 50 is also used as an electric wire for supplying power to the ionizer 30 of the ionization section 3.
  • the electric structure of the electrostatic precipitator was simplified. Since other configurations, actions and effects are the same as those in the first embodiment, the description thereof will be omitted.
  • the high voltage electrode is formed of a plurality of parallel linear conductors 50 coated with an insulator 51 as shown in FIG. 3, but the high voltage electrode is limited to this. is not it.
  • a flat plate-shaped electrode 53 having a plurality of holes G1 as gaps coated with an insulator 54 can also be applied as a high-voltage electrode.
  • a mesh-shaped electrode 55 having a plurality of gaps G2 coated with an insulator 56 can also be applied as a high voltage electrode.
  • the ionizer 30 having one electrode needle 30a inside is illustrated as the ionizer of the ionization unit 3, but the ionizer applicable to the electrostatic precipitator is an ionizer.
  • the ionizer applicable to the electrostatic precipitator is an ionizer.
  • a so-called "carbon brush ionizer” in which electrode needles made of conductive carbon fibers are bundled in a brush shape can also be applied as an ionizer for an electrostatic precipitator.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electrostatic Separation (AREA)
PCT/JP2020/044523 2019-12-27 2020-11-30 電気集塵機 Ceased WO2021131519A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2021567106A JP7541364B2 (ja) 2019-12-27 2020-11-30 電気集塵機
KR1020227020821A KR20220113718A (ko) 2019-12-27 2020-11-30 전기 집진기
CN202080090304.5A CN114901397B (zh) 2019-12-27 2020-11-30 电集尘机
US17/788,795 US12551902B2 (en) 2019-12-27 2020-11-30 Electrostatic precipitator
EP20908122.3A EP4084243A4 (en) 2019-12-27 2020-11-30 ELECTROSTATIC PRECIPITATOR

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Application Number Priority Date Filing Date Title
JP2019239850 2019-12-27
JP2019-239850 2019-12-27

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WO2021131519A1 true WO2021131519A1 (ja) 2021-07-01

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EP (1) EP4084243A4 (https=)
JP (1) JP7541364B2 (https=)
KR (1) KR20220113718A (https=)
CN (1) CN114901397B (https=)
TW (1) TWI879849B (https=)
WO (1) WO2021131519A1 (https=)

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WO2023127946A1 (ja) 2021-12-28 2023-07-06 株式会社クリエイティブテクノロジー 電気集塵機

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EP4458475A4 (en) * 2021-12-28 2026-01-07 Creative Tech Corp ELECTROFILTER

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CN114901397B (zh) 2025-01-28
KR20220113718A (ko) 2022-08-16
TW202130419A (zh) 2021-08-16
US12551902B2 (en) 2026-02-17
EP4084243A1 (en) 2022-11-02
JP7541364B2 (ja) 2024-08-28
US20230046930A1 (en) 2023-02-16
CN114901397A (zh) 2022-08-12
JPWO2021131519A1 (https=) 2021-07-01
TWI879849B (zh) 2025-04-11

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