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WO2004071670A1 - Atomiseur electrostatique - Google Patents

Atomiseur electrostatique Download PDF

Info

Publication number
WO2004071670A1
WO2004071670A1 PCT/GB2004/000458 GB2004000458W WO2004071670A1 WO 2004071670 A1 WO2004071670 A1 WO 2004071670A1 GB 2004000458 W GB2004000458 W GB 2004000458W WO 2004071670 A1 WO2004071670 A1 WO 2004071670A1
Authority
WO
WIPO (PCT)
Prior art keywords
atomiser
fluid
electrode
elements
array
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.)
Ceased
Application number
PCT/GB2004/000458
Other languages
English (en)
Inventor
Jeffrey Allen
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.)
Scion Sprays Ltd
Original Assignee
Scion Sprays 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 Scion Sprays Ltd filed Critical Scion Sprays Ltd
Priority to AU2004210775A priority Critical patent/AU2004210775A1/en
Priority to DE602004006231T priority patent/DE602004006231T8/de
Priority to US10/545,176 priority patent/US20060060683A1/en
Priority to JP2006502244A priority patent/JP2006517468A/ja
Priority to BR0407406-8A priority patent/BRPI0407406A/pt
Priority to EP04708814A priority patent/EP1592514B1/fr
Priority to MXPA05008514A priority patent/MXPA05008514A/es
Publication of WO2004071670A1 publication Critical patent/WO2004071670A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0533—Electrodes specially adapted therefor; Arrangements of electrodes

Definitions

  • the present inventive concept is generally concerned with improving atomisation in electrostatic atomisers by proposing radical departures from the prior art known to the applicant and detailed herein.
  • FIG. 1 shows some of the constraints under which prior art atomisers operate.
  • Atomisation is a balance between maximum voltage potential, percentage of potential charge retained in the discharged fluid and the electrode gap (distance separating the electrodes).
  • the electrode gap is increased the maximum voltage potential may be increased but the critical percentage of potential charge retained in the discharged fluid is reduced, thus resulting in relatively poor atomisation beyond a given electrode gap for a given atomiser.
  • Each of these bell shaped electrodes has similar stringent concentricity tolerances requirements to the above presented conical electrodes.
  • One of the objectives of the present invention is to provide an atomiser whose electrode's geometry may be applied to a wide variety of orifice configurations.
  • the present invention therefore aims to provide an altogether more flexible system with less stringent requirements for tolerances and of tip geometry.
  • a further objective of the invention is to provide an atomiser whose design and manufacture is carried out with improved freedom and which will also be particularly well suited to high volume production.
  • a further objective of the invention is to provide an atomiser with improved atomisation properties both for single orifice atomisers and multi-orifice atomisers.
  • the invention presents an electrostatic atomiser, comprising a channel through which, in use, a fluid passes; one or more orifices to allow the fluid to exit the atomiser; and at least two electrodes in contact with the fluid, when the atomiser is in use, so that when an appropriate potential is applied to said electrodes, fluid particles are charged; characterised by the fact that at least one of the said electrode presents a fluid contacting region which comprises a closely contiguous array of non-fibrous conducting elements generally protruding from the electrode so as to form an array of individual electrode points where the field generated by the atomiser is concentrated.
  • This configuration is advantageous because it removes the complex requirements of having to precisely align the electrode tip with a particular orifice. Furthermore, a multi-orifice atomiser may in this configuration be produced with a relatively high radius tip instead of the prior art system where the electrode tip terminates in a sharp point or a sharp perimeter edge in the case of the bell shaped tip. This configuration will also achieve an advantageously even atomised spray from its orifices. Its manufacturing will also be simplified as compared to the previously discussed prior art systems.
  • the size of one or more elements is under 500 microns. Below this size, the atomiser configuration becomes advantageously flexible doing away with the prior art stringent tolerance requirements and restrictions as to the electrode's geometry.
  • a first electrode incorporates an array of said orifices and a second electrode is spaced from said first electrode to permit the passage of fluid between them, the fluid contacting surface of said second electrode incorporating an array of said elements located essentially over said array of orifices.
  • a first electrode incorporates an array of said orifices and a second electrode is spaced from said first electrode to permit the passage of fluid between them, the first electrode incorporating in addition an array of elements.
  • a higher concentration of electrical fields at the orifices may be achieved which would result in an improvement of the atomisation properties.
  • Figure 4 shows a further schematic cross-sectional view of part of an atomiser in accordance with a second embodiment of the invention.
  • Figure 3 shows an electrostatic atomiser generally referenced 1.
  • the atomiser operates in conjunction with a fluid supply system 2 which conducts fluid into the atomiser first through a fluid passage 3 annular and essentially concentric with the longitudinal axis of the atomiser.
  • Fluid passage 3 is formed between wall 4 and insulator 5.
  • the insulator wraps about the outer surface of a central electrode 6 so as to electrically isolate the fluid in passage 3 from the central electrode 6.
  • Figure 8 shows a further atomiser 38 with a fluid supply system 39 and a power source 40.
  • Power source 40 applies a relatively high voltage on outer electrode 41 whilst a low potential is applied to central electrode 42.
  • the outer electrode 41 incorporates a number of orifices respectively referenced 43, 44 and 45.
  • On the inner surface of outer electrode 41 there are provided portions of elements 46, 47 and 48. Each of these portions of elements forms a ring around the inlet of the various orifices. The inner surface of outer electrode 41 between these portions is deprived of any such elements.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Electrostatic Separation (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

L'invention concerne un atomiseur électrostatique (1) qui comprend : un canal (3), par lequel passe un fluide pendant l'utilisation de l'atomiseur ; au moins un orifice (8) permettant au fluide de sortir de l'atomiseur (1) ; et au moins deux électrodes (4, 6) qui sont, pendant l'utilisation de l'atomiseur, en contact avec le fluide de sorte que lorsqu'un potentiel approprié est appliqué auxdites électrodes (4, 6), les particules de fluide sont chargées. Au moins une desdites électrodes (4, 6) présente une région de contact avec le fluide qui comprend une rangée d'éléments conducteurs (13) non fibreux, proches les uns des autres, qui, globalement, font saillie de l'électrode (6) de façon à former une rangée de pointes d'électrode individuelles au niveau desquelles le champ généré par l'atomiseur est concentré.
PCT/GB2004/000458 2003-02-12 2004-02-06 Atomiseur electrostatique Ceased WO2004071670A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AU2004210775A AU2004210775A1 (en) 2003-02-12 2004-02-06 An electrostatic atomiser
DE602004006231T DE602004006231T8 (de) 2003-02-12 2004-02-06 Elektrostatischer zerstäuber
US10/545,176 US20060060683A1 (en) 2003-02-12 2004-02-06 Electrostatic atomiser
JP2006502244A JP2006517468A (ja) 2003-02-12 2004-02-06 静電噴霧器
BR0407406-8A BRPI0407406A (pt) 2003-02-12 2004-02-06 Pulverizador eletrostático
EP04708814A EP1592514B1 (fr) 2003-02-12 2004-02-06 Atomiseur electrostatique
MXPA05008514A MXPA05008514A (es) 2003-02-12 2004-02-06 Un atomizador electrostatico.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0303158.0A GB0303158D0 (en) 2003-02-12 2003-02-12 An electrostatic atomiser
GB0303158.0 2003-02-12

Publications (1)

Publication Number Publication Date
WO2004071670A1 true WO2004071670A1 (fr) 2004-08-26

Family

ID=9952857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/000458 Ceased WO2004071670A1 (fr) 2003-02-12 2004-02-06 Atomiseur electrostatique

Country Status (11)

Country Link
US (1) US20060060683A1 (fr)
EP (1) EP1592514B1 (fr)
JP (1) JP2006517468A (fr)
CN (1) CN100434188C (fr)
AT (1) ATE361150T1 (fr)
AU (1) AU2004210775A1 (fr)
BR (1) BRPI0407406A (fr)
DE (1) DE602004006231T8 (fr)
GB (1) GB0303158D0 (fr)
MX (1) MXPA05008514A (fr)
WO (1) WO2004071670A1 (fr)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7134381B2 (en) 2003-08-21 2006-11-14 Nissan Motor Co., Ltd. Refrigerant compressor and friction control process therefor
US7146956B2 (en) 2003-08-08 2006-12-12 Nissan Motor Co., Ltd. Valve train for internal combustion engine
GB2430635A (en) * 2005-10-01 2007-04-04 Pursuit Dynamics Plc An atomising apparatus
US7228786B2 (en) 2003-06-06 2007-06-12 Nissan Motor Co., Ltd. Engine piston-pin sliding structure
US7255083B2 (en) 2002-10-16 2007-08-14 Nissan Motor Co., Ltd. Sliding structure for automotive engine
US7273655B2 (en) 1999-04-09 2007-09-25 Shojiro Miyake Slidably movable member and method of producing same
US7284525B2 (en) 2003-08-13 2007-10-23 Nissan Motor Co., Ltd. Structure for connecting piston to crankshaft
US7318514B2 (en) 2003-08-22 2008-01-15 Nissan Motor Co., Ltd. Low-friction sliding member in transmission, and transmission oil therefor
US7322749B2 (en) 2002-11-06 2008-01-29 Nissan Motor Co., Ltd. Low-friction sliding mechanism
US7406940B2 (en) 2003-05-23 2008-08-05 Nissan Motor Co., Ltd. Piston for internal combustion engine
US7458585B2 (en) 2003-08-08 2008-12-02 Nissan Motor Co., Ltd. Sliding member and production process thereof
US7500472B2 (en) 2003-04-15 2009-03-10 Nissan Motor Co., Ltd. Fuel injection valve
US7572200B2 (en) 2003-08-13 2009-08-11 Nissan Motor Co., Ltd. Chain drive system
WO2010006641A1 (fr) * 2008-07-15 2010-01-21 Abb Research Ltd Dispositif pour revêtir de façon électrostatique une pièce à travailler
US7771821B2 (en) 2003-08-21 2010-08-10 Nissan Motor Co., Ltd. Low-friction sliding member and low-friction sliding mechanism using same
US8096205B2 (en) 2003-07-31 2012-01-17 Nissan Motor Co., Ltd. Gear
US8206035B2 (en) 2003-08-06 2012-06-26 Nissan Motor Co., Ltd. Low-friction sliding mechanism, low-friction agent composition and method of friction reduction
IT201600132801A1 (it) * 2016-12-30 2018-06-30 Eme International Ltd Apparato e processo per produrre liquido derivante da biomassa, biocarburante e biomateriale
US11084004B2 (en) 2014-11-10 2021-08-10 Eme International Lux S.A. Device for mixing water and diesel oil, apparatus and process for producing a water/diesel oil micro-emulsion

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010051538A2 (fr) * 2008-10-31 2010-05-06 Microlin, Llc Dispositif et procédé d'atomisation de liquide
CN109457305B (zh) * 2018-12-12 2021-04-09 青岛科技大学 一种内置电极真空环境静电纺丝装置及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4966330A (en) * 1987-04-28 1990-10-30 Ac Greiff Ytbehandling Ab Apparatus in a powder sprayer
US6206307B1 (en) * 1998-10-30 2001-03-27 Charged Injection Corporation, By Said Arnold J. Kelly Electrostatic atomizer with controller
US20010046599A1 (en) * 2000-02-18 2001-11-29 Charged Injection Corporation Method and apparatus for high throughput generation of fibers by charge injection
US6474573B1 (en) * 1998-12-31 2002-11-05 Charge Injection Technologies, Inc. Electrostatic atomizers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2296241Y (zh) * 1997-03-24 1998-11-04 中国人民解放军第二炮兵工程学院维修工程研究所 超音速电弧喷涂装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4966330A (en) * 1987-04-28 1990-10-30 Ac Greiff Ytbehandling Ab Apparatus in a powder sprayer
US6206307B1 (en) * 1998-10-30 2001-03-27 Charged Injection Corporation, By Said Arnold J. Kelly Electrostatic atomizer with controller
US6474573B1 (en) * 1998-12-31 2002-11-05 Charge Injection Technologies, Inc. Electrostatic atomizers
US20010046599A1 (en) * 2000-02-18 2001-11-29 Charged Injection Corporation Method and apparatus for high throughput generation of fibers by charge injection

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7273655B2 (en) 1999-04-09 2007-09-25 Shojiro Miyake Slidably movable member and method of producing same
US7255083B2 (en) 2002-10-16 2007-08-14 Nissan Motor Co., Ltd. Sliding structure for automotive engine
US8152377B2 (en) * 2002-11-06 2012-04-10 Nissan Motor Co., Ltd. Low-friction sliding mechanism
US7322749B2 (en) 2002-11-06 2008-01-29 Nissan Motor Co., Ltd. Low-friction sliding mechanism
US7500472B2 (en) 2003-04-15 2009-03-10 Nissan Motor Co., Ltd. Fuel injection valve
US7406940B2 (en) 2003-05-23 2008-08-05 Nissan Motor Co., Ltd. Piston for internal combustion engine
US7228786B2 (en) 2003-06-06 2007-06-12 Nissan Motor Co., Ltd. Engine piston-pin sliding structure
US8096205B2 (en) 2003-07-31 2012-01-17 Nissan Motor Co., Ltd. Gear
US8206035B2 (en) 2003-08-06 2012-06-26 Nissan Motor Co., Ltd. Low-friction sliding mechanism, low-friction agent composition and method of friction reduction
US7146956B2 (en) 2003-08-08 2006-12-12 Nissan Motor Co., Ltd. Valve train for internal combustion engine
US8575076B2 (en) 2003-08-08 2013-11-05 Nissan Motor Co., Ltd. Sliding member and production process thereof
US7458585B2 (en) 2003-08-08 2008-12-02 Nissan Motor Co., Ltd. Sliding member and production process thereof
US7284525B2 (en) 2003-08-13 2007-10-23 Nissan Motor Co., Ltd. Structure for connecting piston to crankshaft
US7572200B2 (en) 2003-08-13 2009-08-11 Nissan Motor Co., Ltd. Chain drive system
US7771821B2 (en) 2003-08-21 2010-08-10 Nissan Motor Co., Ltd. Low-friction sliding member and low-friction sliding mechanism using same
US7134381B2 (en) 2003-08-21 2006-11-14 Nissan Motor Co., Ltd. Refrigerant compressor and friction control process therefor
US7650976B2 (en) 2003-08-22 2010-01-26 Nissan Motor Co., Ltd. Low-friction sliding member in transmission, and transmission oil therefor
US7318514B2 (en) 2003-08-22 2008-01-15 Nissan Motor Co., Ltd. Low-friction sliding member in transmission, and transmission oil therefor
GB2430635A (en) * 2005-10-01 2007-04-04 Pursuit Dynamics Plc An atomising apparatus
WO2010006641A1 (fr) * 2008-07-15 2010-01-21 Abb Research Ltd Dispositif pour revêtir de façon électrostatique une pièce à travailler
US11084004B2 (en) 2014-11-10 2021-08-10 Eme International Lux S.A. Device for mixing water and diesel oil, apparatus and process for producing a water/diesel oil micro-emulsion
IT201600132801A1 (it) * 2016-12-30 2018-06-30 Eme International Ltd Apparato e processo per produrre liquido derivante da biomassa, biocarburante e biomateriale
WO2018122096A1 (fr) * 2016-12-30 2018-07-05 Eme International Limited Appareil et procédé de production d'un liquide, d'un biocarburant et d'un biomatériau dérivés de biomasse
US11015126B2 (en) 2016-12-30 2021-05-25 Eme International Limited Apparatus and method for producing biomass derived liquid, bio-fuel and bio-material

Also Published As

Publication number Publication date
MXPA05008514A (es) 2006-03-08
BRPI0407406A (pt) 2006-01-10
CN100434188C (zh) 2008-11-19
EP1592514A1 (fr) 2005-11-09
DE602004006231T2 (de) 2007-09-20
US20060060683A1 (en) 2006-03-23
GB0303158D0 (en) 2003-03-19
AU2004210775A1 (en) 2004-08-26
JP2006517468A (ja) 2006-07-27
ATE361150T1 (de) 2007-05-15
DE602004006231D1 (de) 2007-06-14
DE602004006231T8 (de) 2008-01-03
EP1592514B1 (fr) 2007-05-02
CN1747789A (zh) 2006-03-15

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