WO2008091942A3 - Method and device to prevent dust agglomeration on corona electrodes - Google Patents

Method and device to prevent dust agglomeration on corona electrodes Download PDF

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Publication number
WO2008091942A3
WO2008091942A3 PCT/US2008/051790 US2008051790W WO2008091942A3 WO 2008091942 A3 WO2008091942 A3 WO 2008091942A3 US 2008051790 W US2008051790 W US 2008051790W WO 2008091942 A3 WO2008091942 A3 WO 2008091942A3
Authority
WO
WIPO (PCT)
Prior art keywords
shroud
dust
sharp
electrodes
electrode
Prior art date
Application number
PCT/US2008/051790
Other languages
French (fr)
Other versions
WO2008091942B1 (en
WO2008091942A2 (en
Inventor
Daniel Jon Schlitz
Original Assignee
Thorrn Micro Technologies Inc
Daniel Jon Schlitz
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 Thorrn Micro Technologies Inc, Daniel Jon Schlitz filed Critical Thorrn Micro Technologies Inc
Priority to EP08728129A priority Critical patent/EP2109506A2/en
Priority to JP2009547398A priority patent/JP2010516459A/en
Priority to CN200880006931A priority patent/CN101622073A/en
Priority to KR1020097017460A priority patent/KR20090114407A/en
Publication of WO2008091942A2 publication Critical patent/WO2008091942A2/en
Publication of WO2008091942A3 publication Critical patent/WO2008091942A3/en
Publication of WO2008091942B1 publication Critical patent/WO2008091942B1/en

Links

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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0258—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices provided with means for the maintenance of the charging apparatus, e.g. cleaning devices, ozone removing devices G03G15/0225, G03G15/0291 takes precedence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0291—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices corona discharge devices, e.g. wires, pointed electrodes, means for cleaning the corona discharge device
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/02—Arrangements for laying down a uniform charge
    • G03G2215/026—Arrangements for laying down a uniform charge by coronas
    • G03G2215/027—Arrangements for laying down a uniform charge by coronas using wires

Abstract

The present invention is related to preventing dust agglomeration on a sharp electrode which is used for generating corona. According to certain aspects, the invention includes a dust shroud which decreases or prevents dust accumulation on the sharp electrodes. The dust shroud changes the gas flow path so as to reduce the amount of gas passing near the sharp electrode. An advantage of the shroud is that it prevents dust from building up on the electrodes. The shroud is a simple, passive addition to the electrostatic pump, such that the pump is otherwise able to operate normally throughout its life. In embodiments, the shroud can be used to protect a corona electrode used in heat sink applications especially in electronics cooling. It can also be used in electrostatic precipitators for cleaning dust or chemical or microbe particles from air.
PCT/US2008/051790 2007-01-24 2008-01-23 Method and device to prevent dust agglomeration on corona electrodes WO2008091942A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP08728129A EP2109506A2 (en) 2007-01-24 2008-01-23 Method and device to prevent dust agglomeration on corona electrodes
JP2009547398A JP2010516459A (en) 2007-01-24 2008-01-23 Method and apparatus for preventing dust agglomeration at a corona electrode
CN200880006931A CN101622073A (en) 2007-01-24 2008-01-23 Method and device to prevent dust agglomeration on corona electrodes
KR1020097017460A KR20090114407A (en) 2007-01-24 2008-01-23 Method and device to prevent dust agglomeration on corona electrodes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88649707P 2007-01-24 2007-01-24
US60/886,497 2007-01-24

Publications (3)

Publication Number Publication Date
WO2008091942A2 WO2008091942A2 (en) 2008-07-31
WO2008091942A3 true WO2008091942A3 (en) 2008-09-25
WO2008091942B1 WO2008091942B1 (en) 2008-11-20

Family

ID=39645146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/051790 WO2008091942A2 (en) 2007-01-24 2008-01-23 Method and device to prevent dust agglomeration on corona electrodes

Country Status (7)

Country Link
US (1) US7822355B2 (en)
EP (1) EP2109506A2 (en)
JP (1) JP2010516459A (en)
KR (1) KR20090114407A (en)
CN (1) CN101622073A (en)
TW (1) TW200838625A (en)
WO (1) WO2008091942A2 (en)

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US8885317B2 (en) 2011-02-08 2014-11-11 Illinois Tool Works Inc. Micropulse bipolar corona ionizer and method
US8773837B2 (en) 2007-03-17 2014-07-08 Illinois Tool Works Inc. Multi pulse linear ionizer
US9380689B2 (en) 2008-06-18 2016-06-28 Illinois Tool Works Inc. Silicon based charge neutralization systems
US20090316325A1 (en) * 2008-06-18 2009-12-24 Mks Instruments Silicon emitters for ionizers with high frequency waveforms
US8466624B2 (en) * 2008-09-03 2013-06-18 Tessera, Inc. Electrohydrodynamic fluid accelerator device with collector electrode exhibiting curved leading edge profile
JP5230681B2 (en) * 2010-04-22 2013-07-10 シャープ株式会社 Charging device and image forming apparatus
US20120000486A1 (en) * 2010-06-30 2012-01-05 Tessera, Inc. Emitter wire cleaning device with wear-tolerant profile
JP5691470B2 (en) * 2010-12-10 2015-04-01 カルソニックカンセイ株式会社 Blower for vehicle
JP5825062B2 (en) * 2011-02-28 2015-12-02 ブラザー工業株式会社 Image forming apparatus
US8492733B1 (en) * 2012-01-06 2013-07-23 Illinois Tool Works Inc. Multi-sectional linear ionizing bar and ionization cell
USD743017S1 (en) 2012-02-06 2015-11-10 Illinois Tool Works Inc. Linear ionizing bar
US9125284B2 (en) 2012-02-06 2015-09-01 Illinois Tool Works Inc. Automatically balanced micro-pulsed ionizing blower
US9918374B2 (en) 2012-02-06 2018-03-13 Illinois Tool Works Inc. Control system of a balanced micro-pulsed ionizer blower
US9167676B2 (en) 2014-02-28 2015-10-20 Illinois Toolworks Inc. Linear ionizing bar with configurable nozzles
US9661725B2 (en) 2014-05-20 2017-05-23 Illinois Tool Works Inc. Wire electrode cleaning in ionizing blowers
US9610589B2 (en) 2015-05-21 2017-04-04 Savannah River Nuclear Solutions, Llc Electrostatic particle collector with improved features for installing and/or removing its collector plates
JP2017009953A (en) * 2015-06-26 2017-01-12 キヤノン株式会社 Image forming apparatus
US9859090B2 (en) 2015-12-10 2018-01-02 Illinois Tool Works Inc. Self-cleaning linear ionizing bar and methods therefor

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US4846857A (en) * 1986-10-14 1989-07-11 Mitsubishi Jukogyo Kabushiki Kaisha Electric dust collector with electrode supporter therefor
WO2006079111A2 (en) * 2005-01-24 2006-07-27 Thorrn Micro Technologies, Inc. Electro-hydrodynamic pump and cooling apparatus comprising an electro-hydrodynamic pump

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US3894852A (en) * 1973-06-16 1975-07-15 Berckheim Graf Von Electrode arrangement for establishing a steady or constant electric field
US4846857A (en) * 1986-10-14 1989-07-11 Mitsubishi Jukogyo Kabushiki Kaisha Electric dust collector with electrode supporter therefor
WO2006079111A2 (en) * 2005-01-24 2006-07-27 Thorrn Micro Technologies, Inc. Electro-hydrodynamic pump and cooling apparatus comprising an electro-hydrodynamic pump

Also Published As

Publication number Publication date
US20080199208A1 (en) 2008-08-21
WO2008091942B1 (en) 2008-11-20
KR20090114407A (en) 2009-11-03
US7822355B2 (en) 2010-10-26
EP2109506A2 (en) 2009-10-21
WO2008091942A2 (en) 2008-07-31
TW200838625A (en) 2008-10-01
JP2010516459A (en) 2010-05-20
CN101622073A (en) 2010-01-06

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