EP0332624B1 - An electrostatic precipitator for use in electrofilters - Google Patents

An electrostatic precipitator for use in electrofilters 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
Application number
EP87907361A
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German (de)
English (en)
French (fr)
Other versions
EP0332624A1 (en
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
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 Astra Vent AB filed Critical Astra Vent AB
Priority to AT87907361T priority Critical patent/ATE70997T1/de
Publication of EP0332624A1 publication Critical patent/EP0332624A1/en
Application granted granted Critical
Publication of EP0332624B1 publication Critical patent/EP0332624B1/en
Expired 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)
EP87907361A 1986-10-30 1987-10-29 An electrostatic precipitator for use in electrofilters Expired EP0332624B1 (en)

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
SE8604634A SE455170B (sv) 1986-10-30 1986-10-30 Kondensatoravskiljare for elektrofilter
SE8604634 1986-10-30

Publications (2)

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

Family

ID=20366124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87907361A Expired EP0332624B1 (en) 1986-10-30 1987-10-29 An electrostatic precipitator for use in electrofilters

Country Status (7)

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

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6896853B2 (en) 1998-11-05 2005-05-24 Sharper Image Corporation Personal electro-kinetic air transporter-conditioner
US6911186B2 (en) 1998-11-05 2005-06-28 Sharper Image Corporation Electro-kinetic air transporter and conditioner device with enhanced housing configuration and enhanced anti-microorganism capability
US6953556B2 (en) 1998-11-05 2005-10-11 Sharper Image Corporation Air conditioner devices
US6972057B2 (en) 1998-11-05 2005-12-06 Sharper Image Corporation Electrode cleaning for air conditioner devices
US6974560B2 (en) 1998-11-05 2005-12-13 Sharper Image Corporation Electro-kinetic air transporter and conditioner device with enhanced anti-microorganism capability
US6984987B2 (en) 2003-06-12 2006-01-10 Sharper Image Corporation Electro-kinetic air transporter and conditioner devices with enhanced arching detection and suppression features
US7056370B2 (en) 2002-06-20 2006-06-06 Sharper Image Corporation Electrode self-cleaning mechanism for air conditioner devices
US7077890B2 (en) 2003-09-05 2006-07-18 Sharper Image Corporation Electrostatic precipitators with insulated driver electrodes
US7220295B2 (en) 2003-05-14 2007-05-22 Sharper Image Corporation Electrode self-cleaning mechanisms with anti-arc guard for electro-kinetic air transporter-conditioner devices
US7285155B2 (en) 2004-07-23 2007-10-23 Taylor Charles E Air conditioner device with enhanced ion output production features
US7291207B2 (en) 2004-07-23 2007-11-06 Sharper Image Corporation Air treatment apparatus with attachable grill
US7311762B2 (en) 2004-07-23 2007-12-25 Sharper Image Corporation Air conditioner device with a removable driver electrode
US7318856B2 (en) 1998-11-05 2008-01-15 Sharper Image Corporation Air treatment apparatus having an electrode extending along an axis which is substantially perpendicular to an air flow path
US7405672B2 (en) 2003-04-09 2008-07-29 Sharper Image Corp. Air treatment device having a sensor
US7517505B2 (en) 2003-09-05 2009-04-14 Sharper Image Acquisition Llc Electro-kinetic air transporter and conditioner devices with 3/2 configuration having driver electrodes
US7517503B2 (en) 2004-03-02 2009-04-14 Sharper Image Acquisition Llc Electro-kinetic air transporter and conditioner devices including pin-ring electrode configurations with driver electrode
US7517504B2 (en) 2001-01-29 2009-04-14 Taylor Charles E Air transporter-conditioner device with tubular electrode configurations
US7638104B2 (en) 2004-03-02 2009-12-29 Sharper Image Acquisition Llc Air conditioner device including pin-ring electrode configurations with driver electrode
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
US7833322B2 (en) 2006-02-28 2010-11-16 Sharper Image Acquisition Llc Air treatment apparatus having a voltage control device responsive to current sensing
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 (8)

* 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
CN116764815A (zh) * 2023-07-12 2023-09-19 山东雪圣环境工程有限公司 静电除尘过滤器及应用于静电除尘过滤器中的电极板

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 (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7097695B2 (en) 1998-11-05 2006-08-29 Sharper Image Corporation Ion emitting air-conditioning devices with electrode cleaning features
US7662348B2 (en) 1998-11-05 2010-02-16 Sharper Image Acquistion LLC Air conditioner devices
US6953556B2 (en) 1998-11-05 2005-10-11 Sharper Image Corporation Air conditioner devices
US6972057B2 (en) 1998-11-05 2005-12-06 Sharper Image Corporation Electrode cleaning for air conditioner devices
US6974560B2 (en) 1998-11-05 2005-12-13 Sharper Image Corporation Electro-kinetic air transporter and conditioner device with enhanced anti-microorganism capability
US7318856B2 (en) 1998-11-05 2008-01-15 Sharper Image Corporation Air treatment apparatus having an electrode extending along an axis which is substantially perpendicular to an air flow path
US6911186B2 (en) 1998-11-05 2005-06-28 Sharper Image Corporation Electro-kinetic air transporter and conditioner device with enhanced housing configuration and enhanced anti-microorganism capability
USRE41812E1 (en) 1998-11-05 2010-10-12 Sharper Image Acquisition Llc Electro-kinetic air transporter-conditioner
US6896853B2 (en) 1998-11-05 2005-05-24 Sharper Image Corporation Personal electro-kinetic air transporter-conditioner
US7767165B2 (en) 1998-11-05 2010-08-03 Sharper Image Acquisition Llc Personal electro-kinetic air transporter-conditioner
US7959869B2 (en) 1998-11-05 2011-06-14 Sharper Image Acquisition Llc Air treatment apparatus with a circuit operable to sense arcing
US7517504B2 (en) 2001-01-29 2009-04-14 Taylor Charles E Air transporter-conditioner device with tubular electrode configurations
US7056370B2 (en) 2002-06-20 2006-06-06 Sharper Image Corporation Electrode self-cleaning mechanism for air conditioner devices
US7405672B2 (en) 2003-04-09 2008-07-29 Sharper Image Corp. Air treatment device having a sensor
US7220295B2 (en) 2003-05-14 2007-05-22 Sharper Image Corporation Electrode self-cleaning mechanisms with anti-arc guard for electro-kinetic air transporter-conditioner devices
US6984987B2 (en) 2003-06-12 2006-01-10 Sharper Image Corporation Electro-kinetic air transporter and conditioner devices with enhanced arching detection and suppression features
US7517505B2 (en) 2003-09-05 2009-04-14 Sharper Image Acquisition Llc Electro-kinetic air transporter and conditioner devices with 3/2 configuration having 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
US7724492B2 (en) 2003-09-05 2010-05-25 Tessera, Inc. Emitter electrode having a strip shape
US7077890B2 (en) 2003-09-05 2006-07-18 Sharper Image Corporation Electrostatic precipitators with insulated driver electrodes
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
US7517503B2 (en) 2004-03-02 2009-04-14 Sharper Image Acquisition Llc Electro-kinetic air transporter and conditioner devices including pin-ring electrode configurations with driver electrode
US7638104B2 (en) 2004-03-02 2009-12-29 Sharper Image Acquisition Llc Air conditioner device including pin-ring electrode configurations with driver electrode
US7897118B2 (en) 2004-07-23 2011-03-01 Sharper Image Acquisition Llc Air conditioner device with removable driver electrodes
US7311762B2 (en) 2004-07-23 2007-12-25 Sharper Image Corporation Air conditioner device with a removable driver electrode
US7291207B2 (en) 2004-07-23 2007-11-06 Sharper Image Corporation Air treatment apparatus with attachable grill
US7285155B2 (en) 2004-07-23 2007-10-23 Taylor Charles E Air conditioner device with enhanced ion output production features
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
SE8604634D0 (sv) 1986-10-30
JPH0773685B2 (ja) 1995-08-09
EP0332624A1 (en) 1989-09-20
DE3775779D1 (de) 1992-02-13
JPH02500727A (ja) 1990-03-15
SE8604634L (sv) 1988-05-01
ATE70997T1 (de) 1992-01-15
WO1988003057A1 (en) 1988-05-05
AU8230287A (en) 1988-05-25

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