AU2004210775A1 - An electrostatic atomiser - Google Patents
An electrostatic atomiser Download PDFInfo
- Publication number
- AU2004210775A1 AU2004210775A1 AU2004210775A AU2004210775A AU2004210775A1 AU 2004210775 A1 AU2004210775 A1 AU 2004210775A1 AU 2004210775 A AU2004210775 A AU 2004210775A AU 2004210775 A AU2004210775 A AU 2004210775A AU 2004210775 A1 AU2004210775 A1 AU 2004210775A1
- Authority
- AU
- Australia
- 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.)
- Abandoned
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
Abstract
An electrostatic atomiser ( 1 ), comprises a channel ( 3 ) through which, in use, a fluid passes; one or more orifices ( 8 ) to allow the fluid to exit the atomiser ( 1 ); and at least two electrodes ( 4, 6 ) in contact with the fluid, when the atomiser is in use, so that when an appropriate potential is applied to said electrodes ( 4, 6 ), fluid particles are charged; at least one of said electrodes ( 4, 6 ) presents a fluid contacting region which comprises a closely contiguous array of non-fibrous conducting elements ( 13 ) generally protruding from the electrode ( 6 ) so as to form an array of individual electrode points where the field generated by the atomiser is concentrated.
Description
WO 2004/071670 PCT/GB2004/000458 AN ELECTROSTATIC ATOMISER Field of the Invention 5 The invention relates to electrostatic atomisers applied in any practical system where the atomisation of fluid is required. It may be for example employed in a system for the supply of combustion fuel, liquid solutions in say the delivery of drugs, cosmetic fluids and other synthesized solutions in say household sprays. The invention as set out in this application is not limited to any of 10 these particular applications and is intended to be applicable to any atomiser which falls within the scope of the claims which are included at the end of this application. Prior Art known to the Applicant(s) 15 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. 20 Typically, prior art atomisers comprise a central electrode, an outer electrode located around said central electrode, and sufficiently spaced from one another to form a channel in which fluid particles are charged prior to exiting through orifices. In this configuration, a high potential is customarily applied to the central electrode whilst the outer electrode is grounded. Reversing these WO 2004/071670 PCT/GB2004/000458 2 potentials - i.e. applying the high potential to the outer electrode - is not practical as in its environment there would be either the risk of electrocution should an operator inadvertently touch the outer electrode or the superfluous requirement of incorporating an additional insulating layer such as a ceramic 5 sheath which would add unnecessary complexity. Consequently, prior art systems exclusively apply the high potential to the central electrode not to the outer electrode. Figure 1 shows some of the constraints under which prior art atomisers 10 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). In prior art systems as the electrode gap is increased the maximum voltage potential may be increased but the critical percentage of potential charge retained in the discharged fluid 15 is reduced, thus resulting in relatively poor atomisation beyond a given electrode gap for a given atomiser. One of the objectives of the present invention is to offer a radically different approach to atomisation which would to a large extent remove the strict 20 barriers of design to which prior art systems are generally constrained. Within the present inventive concept, other more specific prior art systems are deemed to be relevant and are detailed as follows. 25 One type of known prior art teaches the use of a single central electrode in an atomisation system terminating in a sharp point at its fluid interface so as to generate a relatively high electrical field about that point. One example of such a system is disclosed in US patent number 6,206,307 (Arnold J Kelly) where an electrode protrudes into a passing fluid in the form of a generally 30 conical tip. This, patent discloses in its section which provides a detailed description of the figures that the tip is formed from a fibrous material having electrically conductive fibres extending generally in the axial direction of the electrode and of the body, each such fibre having a microscopic point, these points co-operatively constituting the surface of the tip. The surfaces defining WO 2004/071670 PCT/GB2004/000458 3 the orifice are deprived of any such fibres and are even preferably required to be smooth. This particular atomiser generally terminates in a point which for adequate performance requires to be precisely aligned with its orifice 22. Consequently, strict concentricity tolerances are required to be applied during 5 its manufacturing. Furthermore, if for any reason, the alignment of the tip with its orifice is altered during the lifecycle of the atomiser efficiency will unavoidably suffer. Another fibrous tip is disclosed in a separate US patent number 4,627,903 10 (Alan T Chapman) which discloses the use of composite fragments in the sharp point electrode tip containing sub-micron metallic fibres uniformly arrayed in a non-conducting (insulating) matrix. Another type of prior art system discloses electrode tips terminating in a bell 15 shape (with an annular sharp edge). This configuration is usually utilised in atomisers incorporating circumferentially arrayed orifices. One example of such a configuration can be seen in Figure 2 in a paper presented by A. J. Kelly circa July 1998 at DOE (Diesel Engine Emissions Workshop). Another example of such an electrode configuration is disclosed in US patent number 20 5,725,151 (Robert Hetrick). Each of these bell shaped electrodes has similar stringent concentricity tolerances requirements to the above presented conical electrodes. 25 Every prior art configuration referenced above requires strict tolerances to be achieved and precise electrode tip geometry to be selected for given orifice arrangements. One of the objectives of the present invention is to provide an atomiser whose 30 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.
WO 2004/071670 PCT/GB2004/000458 4 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. 5 A further objective of the invention is to provide an atomiser with improved atomisation properties both for single orifice atomisers and multi-orifice atomisers. Summary of the Invention 10 In its first broad independent aspect, 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 15 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 20 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 25 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. 30 In a second broad independent aspect, the invention covers 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 WO 2004/071670 PCT/GB2004/000458 5 appropriate potential is applied to said electrodes, fluid particles are charged; characterised by the fact that at least one of said electrodes presents a fluid contacting region which comprises one or more faceted conducting elements. 5 Similar advantages to those listed with regard to the first broad independent aspect apply to the second broad independent aspect above. These advantages are also present even when the atomiser only comprises a single faceted conducting element. Faceted conducting elements have the additional benefits of being generally particularly hard wearing and therefore particularly 10 advantageous in atomising high frequency injected fluids and also particularly when applied in systems where the atomisation is followed by an explosion of the atomised fluid. In a third broad independent aspect, an electrostatic atomiser, comprises a 15 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, for charging fluid particles when the atomiser is in use, wherein the or each orifice is part of an electrode to which a high potential is applied in use and said electrode presents a fluid contacting region which comprises a closely 20 contiguous array of 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 marks a radical departure from the prior art thinking that 25 the electrode surface at the orifice is to be preferably smooth. This aspect teaches literally the opposite. It also considers applying the high potential to the orifice electrode. By so doing, many of the prior art constraints are lifted. Particular advantages of this configuration are presented in Figure 2, where strict compliance to a given range of electrode gap as was the requirement of 30 systems according to figure 1, is no longer a requirement. The percentage of potential charge retained in the discharge fluid is high almost irrespective of the electrode gap. Atomisation is therefore improved and achievable over a larger range of geometries as compared to the prior art systems.
WO 2004/071670 PCT/GB2004/000458 6 Furthermore, the advantages disclosed with reference to the first and second broad independent aspect are also present in this configuration. In a fourth broad independent aspect, an electrostatic atomiser, comprising a 5 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 for charging fluid particles when the atomiser is in use, wherein the or each orifice is part of an electrode to which a high potential is applied in use and said electrode presents a fluid contacting region which comprises one or more 10 faceted conducting elements. Similar advantages are present in this configuration as those presented in the context of the previous broad independent aspects. The specific advantages of the third broad independent aspect are also present when a single faceted 15 conducting element is located in the fluid contacting region of an orifice. In a subsidiary aspect in accordance with any of the preceding broad independent aspects, the elements are diamond compounds or are carbon based compounds having similar properties to diamond. Utilising diamonds 20 or the like compounds is particularly advantageous because of the combination of properties of diamond compounds - particularly when considering their toughness, electrical conductivity and ability of being retained by the electrode itself. 25 In a further subsidiary aspect, the elements form part of a diamond coating. A diamond coating is particularly advantageous as it may readily be applied to a wide variety of electrode geometries and is particularly well suited to high volume production. 30 In a further subsidiary aspect, the elements are fullerene molecules. These often have an icosahedral or a so-called 'soccer ball' configuration constituted of an even-numbered clusters of Cm species with m>40. This configuration has a surprisingly advantageous effect on atomisation despite its relative smoothness when compared to diamond crystals.
WO 2004/071670 PCT/GB2004/000458 7 In a further subsidiary aspect, the elements are carbon 64 compounds. This additional feature is particularly advantageous as its application achieves improved atomisation and renders the system flexible and suitable for high volume production.' 5 In a further subsidiary aspect, 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. 10 Advantageously, the size of one or more elements may be comprised within the range of 10 to 150 microns. At these levels, flexibility is even further improved while maintaining advantageous atomisation properties. The cost of manufacturing atomisers within this range is also particularly beneficial. 15 In a further subsidiary aspect, 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 20 array of orifices. One of the advantages of this particular configuration is that atomisation is further improved by being particularly well balanced between the atomiser's various orifices. Advantageously, the second electrode's surface provided over the or each 25 section located between orifices may be deprived of said elements. Adapting the atomiser in this manner reduces the amount of elements necessary to achieve improved atomisation and is equally susceptible of being produced in high volumes. 30 In a further subsidiary aspect, 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.
WO 2004/071670 PCT/GB2004/000458 8 In this configuration, a higher concentration of electrical fields at the orifices may be achieved which would result in an improvement of the atomisation properties. 5 Advantageously, the or each orifice may be adapted to achieve an essentially radial flow and the array of elements may take the form of a ring spaced from the or each orifice to permit the passage of fluid through the or each orifice and located essentially over the or each orifice. 10 This configuration is advantageous because as it may be able to wrap around an object while still improving the atomisation of a fluid whilst doing away with the constraints of the prior art, particularly as to concentricity tolerances evident when using bell shaped electrode tips. 15 Brief Description of the Figures Figure 1 shows the characteristics of a prior art system. Figure 2 shows the characteristics of an inventive configuration. 20 Figure 3 shows a schematic cross-sectional view of part of an illustrative atomiser in accordance with a first embodiment of the present invention. Figure 4 shows a further schematic cross-sectional view of part of an atomiser 25 in accordance with a second embodiment of the invention. Figure 5 illustrates a further cross-sectional view of part of an atomiser according to a third embodiment of the invention. 30 Figure 6 represents a further cross-sectional view of part of an atomiser according to a fourth embodiment of the invention. Figure 7 shows a cross-sectional view of part of an atomiser in accordance with a fifth embodiment of the invention.
WO 2004/071670 PCT/GB2004/000458 9 Figure 8 shows a cross-sectional view of part of an atomiser in accordance with a sixth embodiment of the invention. Figure 9 shows a cross-sectional view of part of an atomiser in accordance 5 with a seventh embodiment of the invention. Detailed Description of the Figures Figure 1 and figure 2 are discussed in detail in the context of the previous 10 sections. 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 15 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. 20 After the fluid passage 3, the fluid enters an atomisation chamber 7. In the lower region of wall 4, there is provided an array of orifices such as that referenced 8. 25 A high voltage power source 9 is connected to both central electrode 6 and wall 4. Power source 9 is not intended in any way to be limited to any particular configuration and may for example be a direct current (DC) or even an alternative current (AC) power source. The person skilled in the art will naturally select an appropriate potential to be applied and any beneficial time 30 dependencies, if necessary, from known alternatives. It is also envisaged within the scope of the invention that the electrodes with which the power source is to operate may be either positive or negative electrodes. Any such modification will undoubtedly be self-evident to the skilled addressee of this WO 2004/071670 PCT/GB2004/000458 10 application and are therefore not detailed any further for the purposes of this description. The central electrode 6 has the characteristic of terminating in a high radius 5 curve covered by a diamond coating 10 covering the entire fluid contacting surface of the electrode. The diamond coating 10 is constituted of diamond elements of say 10 microns such as that referenced 11 which protrudes from the electrode so as to form an 10 electrode point 12. At this element size, the manufacturing process involved in coating may be a mechanical adhesion process whereby a fixer shown as layer 13 in the figure is first applied onto the surface of the electrode followed by the deposition of the array of elements 11. The person skilled in the art may also coat the electrode by other known processes such as plasma or gas 15 deposition. The plasma deposition process will be particularly envisaged for element depositions in the nano-scale. Alternatively, elements 11 may be replace by carbon 64 compounds such as that referenced 14 in the figure. Element 14 may be of general spherical shape 20 and protrudes from the electrode so as to form individual electrode points which achieve the advantageous field concentration required for improved atomisation. The invention also envisages the use of a so-called 'diamond like' coating. 25 This may be a carbon based compound having similar properties (for example hardness) to diamond. The invention also envisages that the elements of the same material as the electrode itself by for example etching away specific sections of the 30 electrode's surface so that elements are formed which protrude from the electrode and are part of an array of individual electrode points to concentrate the field generated by the atomiser.
WO 2004/071670 PCT/GB2004/000458 11 Figure 4 represents an electrostatic atomiser where identical components to those used in Figure 2 are given the same numerical reference followed by a prime sign. A distinctive feature of this embodiment is the incorporation of a diamond coating 15 on the inner surface of wall 4'. In addition, a high 5 potential is intended to be applied to wall electrode 4' by power source 9' whilst the central electrode may be grounded. While a diamond coating 15 is a preferred configuration of atomiser 1', it may be in fact also constituted of fibrous conductive material selected by the person skilled in the art to generate a concentration of potential charge which would be transmitted to fluid 10 particles as they exit the atomiser. In the context of this application fluid particles naturally extend to any parts or elements of a fluid including the actual molecules or atoms of said fluid. In this configuration atomisation occurs particularly evenly through each 15 orifice. One of the results of this configuration is shown as previously discussed in Figure 2. Figure 5 shows a further embodiment of an atomiser generally referenced 16 with a central electrode 17, an insulator 18 and a wall 19. Central electrode 17 20 has the particularity of terminating in a conical tip 20 incorporating an array of elements disposed in a coating of diamond 21. Figure 6 shows a further atomiser generally referenced 22 with a power source 23 applying a difference in potential between a central electrode 24 and a wall 25 electrode 25 in order to charge fluid particles travelling between them. Three orifices such as that referenced 26 are represented in the figure. A region of elements in for example a diamond coating are located directly over orifice 26 and is referenced 27. A second region 28 is located directly over orifice 29 whilst a third region 30 is located directly over orifice 31. The portions 30 located directly over the sections located between the orifices such as that referenced 32 are deprived of elements. This configuration achieves enhanced atomisation while at the same time reducing the amount of elements required to achieve this ind of multi-orifice atomisation.
WO 2004/071670 PCT/GB2004/000458 12 Figure 7 represents an atomiser 33 with a central electrode 34 and a wall electrode 35 provided with orifice 36 capable of achieving essentially radial flow. Around the lower region of central electrode 34, there is provided a ring 37 of elements which allows the field generated by the atomiser to be evenly 5 concentrated in any radial direction. 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 10 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. 15 Figure 9 represents an atomiser 49 which incorporates three electrodes 50, 51 and 52. An electrical insulator 53 may be provided between electrodes 50 and 51. Such a configuration may be electrically connected in a variety of modes. One of the modes of electrical connection would be to ground electrode 52 whilst a very high potential (eg. 30 to 40 kV) is applied to electrode 50 and a 20 high potential (eg. 6 to 10 kV) is applied to electrode 51. Another mode of connection would be to supply a very high potential of for example 30 to 40 kV to the outer electrode 52, whilst a high potential of 6 to 10 kV is applied to electrode 51 and electrode 50 is grounded. A further mode of operation would be to apply a high potential to electrode 52 whilst electrodes 50 and 51 are 25 grounded. In this embodiment, element portion 54 is located adjacent to orifice 55. It is envisaged within the scope if the invention that element portions such as that referenced 54 may be used at any appropriate location in the atomiser's exit path. 30
Claims (16)
1. An electrostatic atomiser, comprising a channel through which, in use, a 5 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 said electrode presents a fluid contacting region which comprises a closely contiguous array 10 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.
2. An electrostatic atomiser, comprising a channel through which, in use, a 15 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 said electrode presents a fluid contacting region which comprises one or more faceted 20 conducting elements.
3. 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 for charging fluid particles, when 25 the atomiser is in use, wherein the or each orifice is part of an electrode to which a high potential is applied in use and said electrode presents a fluid contacting region which comprises a closely contiguous array of 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 30 concentrated.
4. 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 for charging fluid particles, when WO 2004/071670 PCT/GB2004/000458 14 the atomiser is in use, wherein the or each orifice is part of an electrode to which a high potential is applied in use and said electrode presents a fluid contacting region which comprises one or more faceted conducting elements.
5 5. An atomiser according to any preceding Claim, wherein the elements are diamond compounds.
6. An atomiser according to any preceding Claim, wherein the elements are carbon based with similar properties to diamond. 10
7. An atomiser according to any preceding Claim, wherein the elements form part of a diamond coating.
8. An atomiser according to any preceding Claim, wherein the elements 15 are fullerene molecules.
9. An atomiser according to any preceding Claim, wherein the elements are Carbon 64 compounds. 20
10. An atomiser according to any preceding Claim, wherein the size of one or more elements is under 500 microns.
11. An atomiser according to Claim 7, wherein the size of one or more elements is comprised within the range of 10 to 150 microns. 25
12. An atomiser according to any preceding Claim, wherein 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 30 elements located essentially over said array of orifices.
13. An atomiser according to Claim 12, wherein the second electrode's surface provided over the or each section located between orifices is deprived of said elements. WO 2004/071670 PCT/GB2004/000458 15
14. An atomiser according to Claims 1, 2 and 5 to 11, wherein 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 5 electrode incorporating in addition an array of elements.
15. An atomiser according to any preceding Claim, wherein the or each orifice is adapted to achieve an essentially radial flow and the array of elements takes the form of a ring spaced from the or each orifice to permit the passage of 10 fluid through the or each orifice and located essentially over the or each orifice.
16. An atomiser as hereinbefore described with reference to and/or illustrated in any appropriate combination of the accompanying text and/or drawings. 15 20 25 30
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0303158.0 | 2003-02-12 | ||
GBGB0303158.0A GB0303158D0 (en) | 2003-02-12 | 2003-02-12 | An electrostatic atomiser |
PCT/GB2004/000458 WO2004071670A1 (en) | 2003-02-12 | 2004-02-06 | An electrostatic atomiser |
Publications (1)
Publication Number | Publication Date |
---|---|
AU2004210775A1 true AU2004210775A1 (en) | 2004-08-26 |
Family
ID=9952857
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2004210775A Abandoned AU2004210775A1 (en) | 2003-02-12 | 2004-02-06 | An electrostatic atomiser |
Country Status (11)
Country | Link |
---|---|
US (1) | US20060060683A1 (en) |
EP (1) | EP1592514B1 (en) |
JP (1) | JP2006517468A (en) |
CN (1) | CN100434188C (en) |
AT (1) | ATE361150T1 (en) |
AU (1) | AU2004210775A1 (en) |
BR (1) | BRPI0407406A (en) |
DE (1) | DE602004006231T8 (en) |
GB (1) | GB0303158D0 (en) |
MX (1) | MXPA05008514A (en) |
WO (1) | WO2004071670A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3555844B2 (en) | 1999-04-09 | 2004-08-18 | 三宅 正二郎 | Sliding member and manufacturing method thereof |
US6969198B2 (en) * | 2002-11-06 | 2005-11-29 | Nissan Motor Co., Ltd. | Low-friction sliding mechanism |
JP4863152B2 (en) | 2003-07-31 | 2012-01-25 | 日産自動車株式会社 | 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 |
JP4973971B2 (en) | 2003-08-08 | 2012-07-11 | 日産自動車株式会社 | Sliding member |
US7771821B2 (en) | 2003-08-21 | 2010-08-10 | Nissan Motor Co., Ltd. | Low-friction sliding member and low-friction sliding mechanism using same |
EP1508611B1 (en) | 2003-08-22 | 2019-04-17 | Nissan Motor Co., Ltd. | Transmission comprising low-friction sliding members and transmission oil therefor |
GB2430635A (en) * | 2005-10-01 | 2007-04-04 | Pursuit Dynamics Plc | An atomising apparatus |
WO2010006641A1 (en) * | 2008-07-15 | 2010-01-21 | Abb Research Ltd | Device for electrostatically coating a work piece |
WO2010051538A2 (en) * | 2008-10-31 | 2010-05-06 | Microlin, Llc | Liquid atomization device and method |
WO2016074903A1 (en) | 2014-11-10 | 2016-05-19 | Eme International Limited | Device for mixing water and diesel oil, apparatus and process for producing a water/diesel oil micro-emulsion. |
IT201600132801A1 (en) | 2016-12-30 | 2018-06-30 | Eme International Ltd | Apparatus and process for producing liquid from biomass, biofuel and biomaterial |
CN109457305B (en) * | 2018-12-12 | 2021-04-09 | 青岛科技大学 | Vacuum environment electrostatic spinning device with built-in electrode and method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE461319B (en) * | 1987-04-28 | 1990-02-05 | Ac Greiff Ytbehandling Ab | POWDER SPRAY DEVICE INCLUDING AN ANNUAL FRICTION CHARGING CHANNEL |
CN2296241Y (en) * | 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 | Ultrasonic electric arc spray device |
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 |
WO2001060575A1 (en) * | 2000-02-18 | 2001-08-23 | Charge Injection Technologies, Inc. | Method and apparatus for making fibers |
-
2003
- 2003-02-12 GB GBGB0303158.0A patent/GB0303158D0/en not_active Ceased
-
2004
- 2004-02-06 EP EP04708814A patent/EP1592514B1/en not_active Expired - Lifetime
- 2004-02-06 WO PCT/GB2004/000458 patent/WO2004071670A1/en active IP Right Grant
- 2004-02-06 AU AU2004210775A patent/AU2004210775A1/en not_active Abandoned
- 2004-02-06 MX MXPA05008514A patent/MXPA05008514A/en not_active Application Discontinuation
- 2004-02-06 AT AT04708814T patent/ATE361150T1/en not_active IP Right Cessation
- 2004-02-06 US US10/545,176 patent/US20060060683A1/en not_active Abandoned
- 2004-02-06 CN CNB2004800040342A patent/CN100434188C/en not_active Expired - Fee Related
- 2004-02-06 BR BR0407406-8A patent/BRPI0407406A/en not_active IP Right Cessation
- 2004-02-06 DE DE602004006231T patent/DE602004006231T8/en not_active Expired - Fee Related
- 2004-02-06 JP JP2006502244A patent/JP2006517468A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
MXPA05008514A (en) | 2006-03-08 |
DE602004006231D1 (en) | 2007-06-14 |
BRPI0407406A (en) | 2006-01-10 |
CN1747789A (en) | 2006-03-15 |
JP2006517468A (en) | 2006-07-27 |
EP1592514A1 (en) | 2005-11-09 |
EP1592514B1 (en) | 2007-05-02 |
US20060060683A1 (en) | 2006-03-23 |
ATE361150T1 (en) | 2007-05-15 |
DE602004006231T8 (en) | 2008-01-03 |
DE602004006231T2 (en) | 2007-09-20 |
GB0303158D0 (en) | 2003-03-19 |
CN100434188C (en) | 2008-11-19 |
WO2004071670A1 (en) | 2004-08-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1592514B1 (en) | An electrostatic atomiser | |
US6659367B2 (en) | Sprayer device for spraying a liquid coating product | |
US8002208B2 (en) | Electrostatic coating apparatus | |
JP5735953B2 (en) | Electrode assembly for electrostatic sprayer | |
US4788933A (en) | Electrostatic spraying device for spraying articles with powdered material | |
JP3322100B2 (en) | Rotary atomizing electrostatic coating equipment | |
US6896735B2 (en) | Integrated charge ring | |
JPH04507127A (en) | fuel injection valve | |
US7762481B2 (en) | Electrostatic rotary atomizer with indirect internal charge | |
KR100947028B1 (en) | Nonconductor Electrostatic Spray Apparatus and Method Thereof | |
WO2005014177A1 (en) | Method and apparatus for dispensing paint powders for powder coatings | |
JP6634645B2 (en) | Masking jig for electrostatic spraying device, electrostatic spraying device provided with the masking jig, and electrostatic spraying method using the masking jig | |
JP3557802B2 (en) | Rotary atomizing electrostatic coating equipment | |
US4772982A (en) | Powder charging apparatus and electrostatic powder coating apparatus | |
KR100507838B1 (en) | Electrospray Device Having Guard Plate Of Insulated Electric Potential And Method Thereof | |
CN110681505B (en) | Electric spraying device | |
CN112170032A (en) | Nozzle assembly, spraying device and spraying method | |
US20060176641A1 (en) | Ionizing electrode structure and apparatus | |
EP0230723B1 (en) | Powder charging apparatus and electrostatic powder coating apparatus | |
JP2001252596A (en) | Electrostatic coating device | |
JP6841893B2 (en) | Electrostatic spray generator | |
JP3557803B2 (en) | Rotary atomizing electrostatic coating equipment | |
JPH1119538A (en) | Electrostatic coating gun for powder paint | |
JPH10235231A (en) | Electrostatic spray gun | |
EP1224981A2 (en) | Shaping air distribution methods and apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK4 | Application lapsed section 142(2)(d) - no continuation fee paid for the application |