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EP0556847B1 - Elektroabscheider - Google Patents

Elektroabscheider Download PDF

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Publication number
EP0556847B1
EP0556847B1 EP93102664A EP93102664A EP0556847B1 EP 0556847 B1 EP0556847 B1 EP 0556847B1 EP 93102664 A EP93102664 A EP 93102664A EP 93102664 A EP93102664 A EP 93102664A EP 0556847 B1 EP0556847 B1 EP 0556847B1
Authority
EP
European Patent Office
Prior art keywords
discharge
charge
main
additional
electrodes
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP93102664A
Other languages
English (en)
French (fr)
Other versions
EP0556847A2 (de
EP0556847A3 (en
Inventor
Gill Yong-Hyun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP0556847A2 publication Critical patent/EP0556847A2/de
Publication of EP0556847A3 publication Critical patent/EP0556847A3/en
Application granted granted Critical
Publication of EP0556847B1 publication Critical patent/EP0556847B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • 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
    • B03C3/019—Post-treatment of gases
    • 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
    • B03C3/38—Particle charging or ionising stations, e.g. using electric discharge, radioactive radiation or flames

Definitions

  • the present invention relates to an electric precipitator, and more particularly to an electrical precipitator with discharge and charge members and a dust collecting member.
  • such an electrical precipitator is a device for cleaning room air by electrically charging dust included in the room air sucked into the interior of precipitator by virtue of a rotation of a blowing fan driven by electric power with high voltage or naturally introduced into the interior of precipitator, attracting the charged dust to a precipitator member of the precipitator and then discharging the cleaned room air free of the dust out of the precipitator.
  • U.S. Patent No. 3,740,927 discloses an electrostatic precipitator comprising two electrostatic sections.
  • the first section 10 includes one or more pairs of positively charged vertical plates between each pairs of which are positioned a plurality of negatively charged vertical wires, so that a Corona discharge may be developed between the vertical plates.
  • the first and last grids G21 and G26 of the second section 20 may be connected to a source of voltage which does not create a Corona field, and the remaining grids G22 to G25 of the second section are floated between the first and last grids so as to become charged by voltage induced in such grids so that particles of matter entering the second section 20 and traversing the opening of the various grids will respond to the electric field between adjacent grids and to the aerodynamic flow pattern developed between all of the grids, so that the particulate matter may be collected and removed from the fluid medium.
  • this electrical precipitator not only has a relatively complex and expensive construction, but also encounters a degradation in precipitation efficiency due to the floated metallic grids.
  • FIGS. 2 and 3 there is illustrated another conventional electrical precipitator.
  • the electrical precipitator to which electric power of high voltage level is applied comprises a discharge member 1 connected to a positive pole (not shown) and a charge member 2 connected to a negative pole (not shown).
  • the discharge member 1 has a plurality of vertically extending sharp-pointed discharge protrusions 1a for electrically charging dust and deflecting the charged dust toward the charge member 2.
  • the charge member 2 has a plurality of square holes 2a and a plurality of dust collecting portions 2b each extending vertically from one edge of each corresponding square hole 2a.
  • the dust collecting portions 2b of charge member 2 are also connected to the negative pole.
  • Each dust collecting portion 2b of the charge member 2 has the substantially same height as each discharge protrusion 1a of the discharge member 1.
  • Each discharge protrusion 1a is centrally arranged in each corresponding square hole 2a of the charge member 2, as shown in FIG. 3.
  • dust included in air entering the precipitator is divided into particles by discharge waves emitted from the discharge protrusions 1a of discharge member 1 and simultaneously electrically charged to a positive polarity.
  • the positively charged dust particles are attracted to and collected on the dust collecting portions 2b of charge member 2 to which a negative polarity is applied.
  • the shaded portions of square holes 2a are called dead regions which are not affected by discharge waves emitted from the discharge protrusions 1a. Dust passing through these dead regions can not be electrically charged, so that air including dust is discharged into a room, without being cleaned.
  • the present invention has been made in view of the above-mentioned problems encountered in the prior arts and an object of the invention is to provide an electrical precipitator free of dead regions not affected by discharge waves and thus capable of maximizing the precipitation efficiency.
  • an electric precipitator comprising: a plurality of discharge members each having a plurality of spaced main discharge electrodes protruded from each longitudinal edge of the discharge member and a plurality of spaced additional discharge electrodes protruded from each longitudinal edge of the discharge member and arranged with the main discharge electrodes in an alternating manner, each of the additional discharge electrodes having a length different from that of each main discharge electrode; a plurality of charge members adapted to charge dust particles included in air entering the precipitator, together with the discharge members, each charge member having a plurality of spaced main charge electrodes formed at each longitudinal edge of the charge member to have an arc groove shape and a plurality of spaced additional charge electrodes formed at each longitudinal edge of the charge member to have an arc groove shape and arranged with the main charge electrodes in an alternating manner, each of the additional charge electrodes having an arc length different from that of each main charge electrode; a dust collecting member disposed rearwardly of the discharge and charge members and having a
  • FIGS. 4 to 7 there is illustrated an electrical precipitator in accordance with the present invention.
  • the electrical precipitator comprises a plurality of spaced discharge members 3.
  • Each discharge member 3 comprises a discharge member body 3a connected to a source of voltage with positive polarity and provided with opposite stepped ends, a plurality of uniformly spaced main discharge electrodes 3b protruded from opposite longitudinal edges of the discharge member body 3a and a plurality of uniformly spaced additional discharge electrodes 3c protruded from opposite longitudinal edges of the discharge member body 3a.
  • Each additional discharge electrode 3c is arranged between adjacent main discharge electrodes 3b so that the main and additional discharge electrodes 3b and 3c are arranged at each longitudinal edge of the discharge member body 3a in an alternating manner.
  • the main and additional discharge electrodes 3b and 3c formed at the discharge member body 3a are disposed at a level higher than those of the opposite ends of the discharge member body 3a, by a height y.
  • Each main discharge electrode 3b and each additional discharge electrode 3c formed at one longitudinal edge of the discharge member body 3a correspond to each additional discharge electrode 3c and each main discharge electrode 3b formed at the other longitudinal edge of the discharge member body 3a, respectively, to extend in an opposite manner.
  • the main and additional discharge electrodes 3b and 3c have an ⁇ shape with a circular tip.
  • the distance between adjacent main and additional discharge electrodes 3b and 3c is substantially uniform.
  • discharge members 3 The stepped opposite ends of discharge members 3 are coupled together.
  • the electrical precipitator also comprises a plurality of charge members 4 each positioned at adjacent discharge members 3.
  • Each charge member 4 comprises a charge member body 4c connected to a source of voltage with negative polarity, a plurality of uniformly spaced main charge electrodes 4a formed at opposite longitudinal edges of the charge member body 4c and a plurality of uniformly spaced additional charge electrodes 4b formed at opposite longitudinal edges of the charge member body 4c.
  • Each main charge electrode 4a has an arc groove shape.
  • Each additional charge electrode 4b also has an arc groove shape having a diameter substantially identical to that of each main charge electrode 4a, but an arc length smaller than that of the main charge electrode 4a.
  • Each additional charge electrode 4b is arranged between adjacent main charge electrodes 4a so that the main and additional charge electrodes 4a and 4b are arranged at each longitudinal edge of the charge member body 4c in an alternating and contiguous manner.
  • Each main charge electrode 4a and each additional charge electrode 4b formed at one longitudinal edge of the charge member body 4c correspond to each additional charge electrode 4b and each main charge electrode 4a formed at the other longitudinal edge of the charge member body 4c, respectively, to be arranged in an opposite manner.
  • the discharge members 4 are coupled together at their opposite ends.
  • the main and additional charge electrodes 4a and 4b of charge members 4 are disposed in flush with the main and additional discharge electrodes 3b and 3c of discharge members 3.
  • each main discharge electrode 3b and each additional discharge electrode 3c formed at each longitudinal edge of each discharge member 3 correspond to each main charge electrode 4a and each additional charge electrode 4b formed at the other longitudinal edge of each charge member 4 facing to the discharge member longitudinal edge, respectively, as shown in FIG. 6.
  • a plurality of uniformly spaced circular main electric fields can be developed in a line by main discharge electrodes 3b formed at each longitudinal edge of each discharge member 3 and main charge electrodes 4a facing to the main discharge electrodes 3b, as shown in FIG. 7.
  • a plurality of uniformly spaced circular additional electric fields can be developed in a line by additional discharge electrodes 3c formed at each longitudinal edge of each discharge member 3 and additional charge electrodes 4b facing to the additional discharge electrodes 3c.
  • Each additional electric field are arranged between adjacent main electric fields, to overlap therewith. Accordingly, there is no dead region which are not affected by discharge waves emitted from the discharge electrodes 3b and 3c.
  • the distance X 1 between the curved surface of each main discharge electrode 3b and the curved surface of each corresponding main charge electrode 4a is identical to the distance X 2 between the curved surface of each additional discharge electrode 3c and the curved surface of each corresponding additional charge electrode 4b (FIG. 7).
  • the height y of the main and additional discharge electrodes 3b and 3c of discharge members 3 should be larger than the distances X 1 and X 2 .
  • the height y is smaller than the distance X 1 or X 2 (y ⁇ X 1 or X 2 )
  • a charge movement from discharge members 3 is not achieved toward charge members 4, but undesirably achieved toward a dust collecting member 5 disposed rearwardly of the discharge and charge members 3 and 4.
  • the dust collecting member 5 has a strip structure wound around protrusions 7 formed in two lines at each lateral portion of a precipitator case 6, in a zig-zag manner.
  • an activated carbon filter 9 is fixedly attached to opposite ends of the precipitator case 6.
  • the activated carbon filter 9 serves to secondarily filter air including dust not collected by the dust collecting member 5 and to remove odor from the air introduced therein and discharge the cleaned air into a room.
  • Air is introduced in the precipitator case 6, under a condition that voltage of positive polarity is applied to the discharge members 3 while voltage of negative polarity is applied to the charge members 4 and the dust collecting member 5.
  • dust included in the introduced air is divided into particles by discharge waves continuously emitted from the main and additional discharge electrodes 3b and 3c of discharge members 3 and simultaneously electrically charged to positive polarity.
  • the positively charged dust particles are attracted to and collected on the dust collecting member 5 exhibiting negative polarity.
  • the air including dust particles not collected by the dust collecting member 5 is filtered through the activated carbon filter 9 prior to its discharge into a room and simultaneously free of odor so that cleaned air can be discharged into the room.
  • the room air can be effectively cleaned.
  • the present invention provides an electric precipitator capable of maximizing the discharge efficiency by a plurality of discharge electrodes and a plurality of charge electrodes developing a plurality of circular electric fields arranged in lines and maximizing the precipitation efficiency by a secondary filtering obtained by an activated carbon filter.

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  • Electrostatic Separation (AREA)

Claims (7)

  1. Ein Elektroabscheider, aufweisend:
    eine Vielzahl von Entladungselementen (3), von denen jedes eine Vielzahl beabstandeter Hauptentladungselektroden (3b), die von jeder Längskante des Entladungselements (3) abstehen, und eine Vielzahl beabstandeter Zusatzentladungselektroden (3c) aufweist, die von jeder Längskante des Entladungselements (3) abstehen und abwechselnd mit den Hauptentladungselektroden (3b) angeordnet sind, wobei jede der Zusatzentladungselektroden (3c) eine Länge aufweist, die von der jeder Hauptentladungselektrode (3b) verschieden ist; und
    eine Vielzahl von Ladungselementen (4), die zusammen mit den Entladungselementen (3) Staubteilchen, die in der in den Abscheider eintretenden Luft eingeschlossen sind, aufladen,
    dadurch gekennzeichnet, daß
    - jedes Ladungselement (4) eine Vielzahl beabstandeter Hauptladungselektroden (4a), die an jeder Längskante des Ladungselements (4) ausgebildet sind, wobei sie eine bogenförmig ausgekehlte Form aufweisen, und eine Vielzahl beabstandeter Zusatzladungselektroden (4b) aufweist, die an jeder Längskante des Ladungselements (4) ausgebildet sind, wobei sie eine bogenförmig ausgekehlte Form aufweisen und abwechselnd mit den Hauptladungselektroden (4a) angeordnet sind,
    - jede der Zusatzladungselektroden (4b) eine Bogenlänge aufweist, die von der jeder Hauptladungselektrode (4a) verschieden ist;
    - ein Staubsammelelement (5) rückwärtig zu den Entladungs- und Ladungselementen (3, 4) angeordnet ist und eine Polarität verschieden von der der geladenen Staubteilchen aufweist, so daß die geladenen Staubteilchen daran gesammelt werden; und
    - ein Aktivkohlefilter (9) rückwärtig des Staubsammelelements (5) angeordnet und zum sekundären Filtern der geladenen Staubteilchen und Entfernen von Geruch aus der Luft ausgelegt ist.
  2. Ein Elektroabscheider nach Anspruch 1,
    wobei jede der Haupt- und Zusatzentladungselektroden (3b, 3c) eine kreisförmige Spitze aufweist.
  3. Ein Elektroabscheider nach Anspruch 1 oder 2,
    wobei die Entladungselemente (3) und die Ladungselemente (4) die gleiche Höhe aufweisen.
  4. Ein Elektroabscheider nach einem der Ansprüche 1 bis 3,
    wobei die Hauptentladungselektroden (3b), die an jeder Längskante jedes Entladungselements (3) ausgebildet sind, und die Hauptladungselektroden (4a), die zu den Hauptentladungselektroden (3b) gehören, eine Vielzahl gleichförmig beabstandeter, kreisförmiger elektrischer Hauptfelder in einer Reihe entwickeln und Zusatzentladungselektroden (3c), die an jeder Längskante jedes Entladungselements (3) ausgebildet sind, und Zusatzladungselektroden (4b), die zu der Zusatzentladungselektrode (3c) gehören, eine Vielzahl gleichförmig beabstandeter ringförmiger elektrischer Zusatzfelder in einer Reihe entwickeln, wobei jedes elektrische Zusatzfeld zwischen benachbarten elektrischen Hauptfeldern mit diesen überlappend angeordnet ist.
  5. Ein Elektroabscheider nach einem der Ansprüche 1 bis 4,
    wobei der Abstand zwischen jeder Hauptentladungselektrode (3b) und jeder zugehörenden Hauptladungselektrode (4a) identisch zum Abstand zwischen jeder Zusatzentladungselektrode (3c) und jeder zugehörenden Zusatzladungselektrode (4b) ist.
  6. Ein Elektroabscheider nach einem der Ansprüche 1 bis 5,
    wobei jedes Entladungselement (3) gegenüberliegende abgestufte Enden aufweist, die auf einer Ebene angeordnet sind, die um eine Höhe größer als sowohl der Abstand zwischen jeder Hauptentladungselektrode (3b) und jeder zugehörigen Hauptladungselektrode (4a) als auch dem Abstand zwischen jeder Zusatzentladungselektrode (3c) und jeder zugehörenden Zusatzladungselektrode (4b) niedriger als jene der Haupt- und Zusatzentladungselektroden (3b, 3c) von diesem und der Haupt- und Zusatzladungselektroden (4a, 4b) von jedem zugehörigen Ladungselement (4) liegt.
  7. Ein Elektroabscheider nach einem der Ansprüche 1 bis 6,
    wobei das Staubsammelelement (5) einen Streifenaufbau aufweist, der in einer Zickzack-Art und Weise um Vorsprünge (7) gewickelt ist, die in zwei Reihen an jedem Seitenteil eines Abscheidergehäuses (6) ausgebildet sind.
EP93102664A 1992-02-21 1993-02-19 Elektroabscheider Expired - Lifetime EP0556847B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019920002702A KR940002616B1 (ko) 1992-02-21 1992-02-21 전기집진기
KR270292 1992-02-21

Publications (3)

Publication Number Publication Date
EP0556847A2 EP0556847A2 (de) 1993-08-25
EP0556847A3 EP0556847A3 (en) 1993-10-20
EP0556847B1 true EP0556847B1 (de) 1997-05-21

Family

ID=19329349

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102664A Expired - Lifetime EP0556847B1 (de) 1992-02-21 1993-02-19 Elektroabscheider

Country Status (4)

Country Link
EP (1) EP0556847B1 (de)
KR (1) KR940002616B1 (de)
DE (1) DE69310785T2 (de)
GR (1) GR3024427T3 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100234085B1 (ko) * 1997-12-27 1999-12-15 윤종용 전기집진기
US6235090B1 (en) * 1998-12-29 2001-05-22 Gas Research Institute Kitchen hood filtration apparatus
KR100786710B1 (ko) * 2006-09-12 2007-12-21 정동협 전기집진기
KR101860489B1 (ko) * 2009-10-28 2018-07-05 삼성전자주식회사 전기집진장치 및 이를 포함하는 공기청정기
CN103567072A (zh) * 2012-07-31 2014-02-12 上海冶金矿山机械厂 静电除尘器中阳极板的结构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR745621A (de) * 1933-05-13
US1344330A (en) * 1918-10-31 1920-06-22 Research Corp Orifice-precipitator
FR548448A (fr) * 1921-06-20 1923-01-15 Précipitateur électrique de poussières
NL6816140A (de) * 1967-11-16 1969-05-20

Also Published As

Publication number Publication date
EP0556847A2 (de) 1993-08-25
KR940002616B1 (ko) 1994-03-26
KR930017625A (ko) 1993-09-20
EP0556847A3 (en) 1993-10-20
DE69310785D1 (de) 1997-06-26
GR3024427T3 (en) 1997-11-28
DE69310785T2 (de) 1997-12-18

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