EP0332624B1 - Appareil electrostatique de precipitation destine a etre utilise dans des electrofiltres - Google Patents

Appareil electrostatique de precipitation destine a etre utilise dans des electrofiltres Download PDF

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Publication number
EP0332624B1
EP0332624B1 EP87907361A EP87907361A EP0332624B1 EP 0332624 B1 EP0332624 B1 EP 0332624B1 EP 87907361 A EP87907361 A EP 87907361A EP 87907361 A EP87907361 A EP 87907361A EP 0332624 B1 EP0332624 B1 EP 0332624B1
Authority
EP
European Patent Office
Prior art keywords
electrodes
terminal
voltage source
electrically
precipitator
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
EP87907361A
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German (de)
English (en)
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EP0332624A1 (fr
Inventor
Vilmos TÖRÖK
Andrzej Loreth
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.)
Astra Vent AB
Original Assignee
Astra Vent AB
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Filing date
Publication date
Application filed by Astra Vent AB filed Critical Astra Vent AB
Priority to AT87907361T priority Critical patent/ATE70997T1/de
Publication of EP0332624A1 publication Critical patent/EP0332624A1/fr
Application granted granted Critical
Publication of EP0332624B1 publication Critical patent/EP0332624B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B03C3/66—Applications of electricity supply techniques
    • B03C3/70—Applications of electricity supply techniques insulating in electric separators
    • 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

Definitions

  • the present invention relates to an electrostatic precipitator for use in electrostatic filters, so-called electrofilters.
  • an electrostatic precipitator comprises a multiple of electrode plates or electrode lamellae which are electrically conductive or semi-conductive and which are arranged in mutually spaced parallel relationship and alternatively connected electrically to a respective terminal of a d.c. voltage source, such as to produce a structural device similar to an air capacitor connected to both terminals of the d.c. voltage source.
  • An electrostatic precipitator of this kind is placed in the air flow passage or duct of an electrofilter in a manner such that the electrode plates or lamellae extend transversely across the air duct or air-flow passage in which the filter is placed, with the side surfaces of said plate electrodes parallel with the direction of air flow through the duct.
  • the air flow to be cleansed of aerosol contaminants present in the form of solid particles or liquid droplets is driven through the air-flow duct, and therewith through the precipitator, by means of a blower or fan, natural ventilation, forced draught, or with the aid of an electric ion wind (c.f. International Patent Application PCT/SE85/00538, which corresponds to EP-A-0264363).
  • the electrofilter incorporates upstream of the electrostatic precipitator means for electrically charging the aerosol contaminants present in the air flow in some suitable known manner, e.g. by means of a corona discharge which generates air ions.
  • the purpose of the electrostatic precipitator is therewith to bring the electrically charged contaminants in the air flow passing through the precipitator, between the various plate electrodes thereof, under the influence of the electric field which is generated between adjacent electrodes and which extends essentially at right angles to the direction of air flow, such that the contaminants will migrate to one or the other of said electrodes, depending on the electrical polarity of the contaminants, and fasten on said electrodes, therewith cleansing the air flow from said contaminants.
  • an electrostatic precipitator will present a significant capacitance. Consequently, a powerful capacitive discharge current will be released, if the electrodes of the precipitator are touched unintentionally. This current is highly unpleasant and may even be dangerous. Consequently, when electrofilters of this kind are to be used in a human environment, e.g. in domestic environments or working environments, it must be ensured that the electrostatic precipitator cannot be touched unintentionally. This often places on the construction of the electrofilter demands which conflict with other structural desiderata, such as small dimensions, low air-flow resistance, etc.
  • the aforementioned highly resistive material conveniently consists of a plastic which is highly resistive, so-called antistatic plastic or a plastic treated to become antistatic, for example a plastic material of the kind used to package semi-conductor components so that said components are protected against the effect of electrostatic voltages.
  • anti-static, or anti-static treated, plastic materials are available commercially and normally have a surface resistivity of from 109-1015 ⁇ , normally in the order of 1013 ⁇ .
  • this connection of the precipitation electrodes 1, 2 to a respective one of the two terminals of the voltage source 3 is achieved by bringing one side-edge surface of a respective electrode, or at least parts of said one side-edge surface, into pressure contact with one side of a respective sheet-like or strip-like member 4 or 5 which is made of a highly resistive material, such as a so-called antistatic plastic, or a plastic which has been made antistatic.
  • a highly resistive material such as a so-called antistatic plastic, or a plastic which has been made antistatic.
  • antistatic, or antistatic treated materials are well known per se and are used, inter alia, to wrap semi-conductor components so as to protect the same against electrostatic voltages during the transportation and storage of such components.
  • plastic materials have a surface resistivity of from 109-1015 ⁇ normally of the order of 1013 ⁇ .
  • the antistatic material sold by MAGNAB, Nyköping, Sweden under the designation MPAC has been found extremely suitable to the requirements of the present invention.
  • the plastic members 4, 5 may have a thickness of e.g. 1-5 mm, and will be slightly resilient or elastic, such as to enable the side edges of the electrodes 1, 2 to be held in firm abutment with one side surface of respective plastic members, with the aid of a suitably adapted pressure.
  • the mutually opposing side surfaces of the plastic members 4, 5 have provided thereon respective electrical contact means 6, 7, e.g.
  • each of the precipitation electrodes 1, 2 is electrically connected individually to its associated terminal of the d.c. voltage source 3, through a very high resistance formed by the respective antistatic plastic-member 4 and 5.
  • this high resistance will also lie mutually between the various electrodes 1, 2 which are connected in common to the same terminal of the voltage cource 3.
  • those electrical discharges which are able to occur at the edges of the electrodes 1, 2 will be limited to such an extent as to be totally inaudible and such as to generate no appreciable amounts of ozone.

Landscapes

  • Electrostatic Separation (AREA)
  • Elimination Of Static Electricity (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Claims (7)

1. Appareil électrostatique de précipitation destiné à être utilisé avec des électrofiltres, comprenant une multiplicité de plaques électrodes ou de lamelles électrodes de précipitation électriquement conductrices ou semi-conductrices (1,2), qui sont disposées parallèlement les unes aux autres et espacées les unes des autres et qui sont électriquement raccordées en alternance à la première borne et à la deuxième borne d'une source de tension continue (3), caractérisé en ce qu'au moins les électrodes (1 ou 2) raccordées à la première borne de la source de tension (3) sont individuellement raccordées à cette borne en amenant une partie de la surface d'un bord d'une électrode respective (1 ou 2) en contact sous pression avec un côté d'un élément analogue à une feuille ou à une bande (4 ou 5) en un matériau extrêmement résistant, cet élément extrêmement résistant étant équipé de moyens de contact électrique (6 ou 7) qui sont séparés des emplacements auxquels les électrodes respectives sont en contact avec cet élément et qui sont raccordés électriquement à la borne correspondante de la source de courant continu (3).
2. Appareil de précipitation selon la revendication 1, caractérisé en ce que toutes les électrodes (1,2) sont raccordées individuellement à une borne respective de la source de tension continue (3) de la manière précitée.
3. Appareil de précipitation selon la revendication 1 ou la revendication 2, caractérisé en ce que le matériau extrêmement résistant (4,5) est une matière plastique antistatique ayant une résistivité de surface comprise entre 10⁹ et 10¹⁵ ohms, de préférence égale à environ 10¹³ ohms.
4. Appareil de précipitation selon la revendication 1, caractérisé en ce que les bornes de la source de tension continue (3) sont raccordées électriquement à des moyens de contact respectifs (6 ou 7) sur des éléments respectifs (4 ou 5) par une résistance ohmique élevée (8 ou 9).
5. Appareil de précipitation selon la revendication 1, caractérisé en ce que cet élément extrêmement résistant (4,5) est légèrement élastique ou tendre.
6. Appareil de précipitation selon l'une des revendications 1 à 5, caractérisé en ce que les électrodes (1,2) sont maintenues dans leurs positions mutuelles prévues à l'aide d'éléments d'espacement constitués par un matériau électriquement isolant.
7. Appareil de précipitation selon la revendication 6, caractérisé en ce que les éléments d'espacement sont formés en une matière plastique ou une colle moulable électriquement isolante.
EP87907361A 1986-10-30 1987-10-29 Appareil electrostatique de precipitation destine a etre utilise dans des electrofiltres Expired - Lifetime EP0332624B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87907361T ATE70997T1 (de) 1986-10-30 1987-10-29 Elektrostatische niederschlagsvorrichtung zur verwendung bei elektrofiltern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8604634 1986-10-30
SE8604634A SE455170B (sv) 1986-10-30 1986-10-30 Kondensatoravskiljare for elektrofilter

Publications (2)

Publication Number Publication Date
EP0332624A1 EP0332624A1 (fr) 1989-09-20
EP0332624B1 true EP0332624B1 (fr) 1992-01-02

Family

ID=20366124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87907361A Expired - Lifetime EP0332624B1 (fr) 1986-10-30 1987-10-29 Appareil electrostatique de precipitation destine a etre utilise dans des electrofiltres

Country Status (7)

Country Link
EP (1) EP0332624B1 (fr)
JP (1) JPH0773685B2 (fr)
AT (1) ATE70997T1 (fr)
AU (1) AU8230287A (fr)
DE (1) DE3775779D1 (fr)
SE (1) SE455170B (fr)
WO (1) WO1988003057A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7662348B2 (en) 1998-11-05 2010-02-16 Sharper Image Acquistion LLC Air conditioner devices
US7724492B2 (en) 2003-09-05 2010-05-25 Tessera, Inc. Emitter electrode having a strip shape
US7767169B2 (en) 2003-12-11 2010-08-03 Sharper Image Acquisition Llc Electro-kinetic air transporter-conditioner system and method to oxidize volatile organic compounds
US7767165B2 (en) 1998-11-05 2010-08-03 Sharper Image Acquisition Llc Personal electro-kinetic air transporter-conditioner
US7833322B2 (en) 2006-02-28 2010-11-16 Sharper Image Acquisition Llc Air treatment apparatus having a voltage control device responsive to current sensing
US7897118B2 (en) 2004-07-23 2011-03-01 Sharper Image Acquisition Llc Air conditioner device with removable driver electrodes
US7906080B1 (en) 2003-09-05 2011-03-15 Sharper Image Acquisition Llc Air treatment apparatus having a liquid holder and a bipolar ionization device
US7959869B2 (en) 1998-11-05 2011-06-14 Sharper Image Acquisition Llc Air treatment apparatus with a circuit operable to sense arcing
US8043573B2 (en) 2004-02-18 2011-10-25 Tessera, Inc. Electro-kinetic air transporter with mechanism for emitter electrode travel past cleaning member
US10792673B2 (en) 2018-12-13 2020-10-06 Agentis Air Llc Electrostatic air cleaner
US10828646B2 (en) 2016-07-18 2020-11-10 Agentis Air Llc Electrostatic air filter
US10875034B2 (en) 2018-12-13 2020-12-29 Agentis Air Llc Electrostatic precipitator
US10882053B2 (en) 2016-06-14 2021-01-05 Agentis Air Llc Electrostatic air filter
US10960407B2 (en) 2016-06-14 2021-03-30 Agentis Air Llc Collecting electrode

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0522044U (ja) * 1991-09-06 1993-03-23 山武ハネウエル株式会社 集塵セル
SE9200515L (sv) * 1992-02-20 1993-07-12 Tl Vent Ab Tvaastegs elektrofilter
SE9400110L (sv) * 1994-01-17 1995-07-18 Tl Vent Ab Luftreningsapparat
CN1911526B (zh) 2005-08-10 2010-08-18 金烈水 一种高效率静电除尘器
JP2010063964A (ja) * 2008-09-09 2010-03-25 Panasonic Corp 集塵装置
US9005347B2 (en) 2011-09-09 2015-04-14 Fka Distributing Co., Llc Air purifier
JP7015596B1 (ja) * 2021-06-18 2022-02-03 エステアール株式会社 透明静電吸着パーティション及び透明静電吸着パーティションシステム

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT377204B (de) * 1980-11-05 1985-02-25 Hans Oppitz Elektrode fuer vorzugsweise elektrostatische anwendungsbereiche
US4477268A (en) * 1981-03-26 1984-10-16 Kalt Charles G Multi-layered electrostatic particle collector electrodes

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7959869B2 (en) 1998-11-05 2011-06-14 Sharper Image Acquisition Llc Air treatment apparatus with a circuit operable to sense arcing
USRE41812E1 (en) 1998-11-05 2010-10-12 Sharper Image Acquisition Llc Electro-kinetic air transporter-conditioner
US7767165B2 (en) 1998-11-05 2010-08-03 Sharper Image Acquisition Llc Personal electro-kinetic air transporter-conditioner
US7662348B2 (en) 1998-11-05 2010-02-16 Sharper Image Acquistion LLC Air conditioner devices
US7724492B2 (en) 2003-09-05 2010-05-25 Tessera, Inc. Emitter electrode having a strip shape
US7906080B1 (en) 2003-09-05 2011-03-15 Sharper Image Acquisition Llc Air treatment apparatus having a liquid holder and a bipolar ionization device
US7767169B2 (en) 2003-12-11 2010-08-03 Sharper Image Acquisition Llc Electro-kinetic air transporter-conditioner system and method to oxidize volatile organic compounds
US8043573B2 (en) 2004-02-18 2011-10-25 Tessera, Inc. Electro-kinetic air transporter with mechanism for emitter electrode travel past cleaning member
US7897118B2 (en) 2004-07-23 2011-03-01 Sharper Image Acquisition Llc Air conditioner device with removable driver electrodes
US7833322B2 (en) 2006-02-28 2010-11-16 Sharper Image Acquisition Llc Air treatment apparatus having a voltage control device responsive to current sensing
US10882053B2 (en) 2016-06-14 2021-01-05 Agentis Air Llc Electrostatic air filter
US10960407B2 (en) 2016-06-14 2021-03-30 Agentis Air Llc Collecting electrode
US10828646B2 (en) 2016-07-18 2020-11-10 Agentis Air Llc Electrostatic air filter
US10792673B2 (en) 2018-12-13 2020-10-06 Agentis Air Llc Electrostatic air cleaner
US10875034B2 (en) 2018-12-13 2020-12-29 Agentis Air Llc Electrostatic precipitator
US11123750B2 (en) 2018-12-13 2021-09-21 Agentis Air Llc Electrode array air cleaner

Also Published As

Publication number Publication date
SE455170B (sv) 1988-06-27
JPH02500727A (ja) 1990-03-15
SE8604634L (sv) 1988-05-01
WO1988003057A1 (fr) 1988-05-05
JPH0773685B2 (ja) 1995-08-09
DE3775779D1 (de) 1992-02-13
EP0332624A1 (fr) 1989-09-20
SE8604634D0 (sv) 1986-10-30
AU8230287A (en) 1988-05-25
ATE70997T1 (de) 1992-01-15

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