EP0472817A2 - Pistolet de pulvérisation électrostatique - Google Patents
Pistolet de pulvérisation électrostatique Download PDFInfo
- Publication number
- EP0472817A2 EP0472817A2 EP91107412A EP91107412A EP0472817A2 EP 0472817 A2 EP0472817 A2 EP 0472817A2 EP 91107412 A EP91107412 A EP 91107412A EP 91107412 A EP91107412 A EP 91107412A EP 0472817 A2 EP0472817 A2 EP 0472817A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- spray gun
- carrier plate
- electrostatic spray
- printed
- gun according
- 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.)
- Granted
Links
Images
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
- B05B5/0531—Power generators
Definitions
- the invention relates to an electrostatic spray gun, in particular a manual spray gun, for coating workpieces with liquid or powder coating material according to the preamble of patent claim 1.
- the object of the present invention is therefore to design a voltage multiplier intended for installation in or attachment to an electrostatic spray gun in such a way that its dimensions and weight can be reduced still further. This object is achieved by the characterizing features of patent claim 1.
- FIG. 1 shows a carrier plate of rectangular extension made of sintered ceramic.
- a large number of corresponding capacitor areas 11 are printed on the upper and lower surface of this carrier plate 10, in the form of two opposing rows of capacitors, similar to the arrangement of the capacitors of a conventional high-voltage cascade.
- the electrical supply and discharge is carried out by printed conductor tracks 12, which are also printed.
- FIG Embodiment of the entire high-voltage cascade, the diodes 13 which are still required being applied to the carrier plate 10 with capacitors 11 and conductor tracks 12 from FIG. 1 and are correspondingly connected to the capacitors by soldering. To protect the high-voltage cascade, this is then encapsulated with synthetic resin, for example.
- circuit diagram of this high-voltage cascade from FIG. 2 corresponds entirely to that of a high-voltage cascade constructed using conventional capacitors, so that a special explanation is unnecessary.
- the dimensions and also the weight of the high-voltage cascade according to FIG. 2 are, however, considerably smaller than in the case of conventionally constructed high-voltage cascades.
- Figure 3 shows a modification of the high-voltage cascade of Figure 2.
- the modification consists in that the carrier plate 10 of Figure 3 has been extended on one side and on the extension area 10 'protective resistors 14 are arranged, as in electrostatic spray guns between the high-voltage side output of the Cascade and charging electrode are common and necessary.
- FIG. 4 shows a further carrier plate 15, for example likewise made of sintered ceramic, on which diodes 16 are printed as doped silicon rods or strips and contact surfaces 17 to form a diode matrix.
- This carrier plate 15 with a diode matrix is intended for combination with the carrier plate 10, the active surfaces of the carrier plates 10 and 15 being placed one on top of the other while soldering the capacitor and diode connections.
- these double plates 10, 15 can be encapsulated with synthetic resin.
- the carrier plate 10 preferably consists made of sintered ceramic.
- the capacitor areas can then be printed on using a layout template, for example.
- the thickness of the carrier plate 10 must be chosen in relation to the capacitors so that no breakdowns occur for a given capacitance, depending on the high-voltage strength and the number of stages of the cascade. If one chooses a comparatively large number of cascade stages for a given total capacity of the voltage multiplier, then a comparatively long carrier plate 10 is required, the thickness of which may be kept small, whereas with a few cascade stages the carrier plate 10 may be short but have a comparatively large thickness got to. In this way it is possible to adapt to the respective requirements, given by the required electrical values and the space available for the respective spray gun.
- the carrier plate 15 for the diode matrix can also consist of sintered ceramic, but a carrier plate 15 made of insulating plastic is also possible because a lower dielectric constant is sufficient for the carrier plate 15 than for the carrier plate 10 for the capacitors.
- the two carrier plates 10, 15 are then placed one on top of the other, it being irrelevant whether the two carrier plates 10, 15 lie directly on one another with their surfaces or are at a minimal distance, because this component 10, 15 finally has insulating plastic is cast around.
- the diode part can also be constructed and encapsulated in the manner known from today's integrated circuits.
- Another modification possibility is to design the carrier plates 10 and / or 15 not as straight rectangular plates, but rather as curved plates, in order to take account of the specified installation conditions.
- the leadership of the High-voltage cables can be arranged in the curve.
- care must be taken that the printed active areas are each of the same size.
- printing should also be understood to mean known equivalent application methods, such as, for example, vapor deposition and lamination.
Landscapes
- Electrostatic Spraying Apparatus (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Rectifiers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4027078A DE4027078A1 (de) | 1990-08-27 | 1990-08-27 | Elektrostatische spruehpistole |
DE4027078 | 1990-08-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0472817A2 true EP0472817A2 (fr) | 1992-03-04 |
EP0472817A3 EP0472817A3 (en) | 1992-09-02 |
EP0472817B1 EP0472817B1 (fr) | 1995-08-09 |
Family
ID=6413016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91107412A Expired - Lifetime EP0472817B1 (fr) | 1990-08-27 | 1991-05-07 | Pistolet de pulvérisation électrostatique |
Country Status (4)
Country | Link |
---|---|
US (1) | US5170315A (fr) |
EP (1) | EP0472817B1 (fr) |
JP (1) | JPH04235763A (fr) |
DE (2) | DE4027078A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996011062A1 (fr) * | 1994-10-11 | 1996-04-18 | Imperial Chemical Industries Plc | Generateur de haute tension |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004167411A (ja) * | 2002-11-21 | 2004-06-17 | Anest Iwata Corp | 静電塗装用高電圧発生器 |
DE102011121915A1 (de) * | 2011-12-22 | 2013-06-27 | Eisenmann Ag | Elektrodenanordnung und elektrostatischer Zerstäuber mit einer solchen |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU67141A1 (fr) * | 1972-03-03 | 1973-05-22 | ||
US3902108A (en) * | 1973-02-01 | 1975-08-26 | Daniel Sion | Voltage multiplier |
US4171098A (en) * | 1974-08-06 | 1979-10-16 | Franz Braun | Electrostatic coating guns |
EP0044038A1 (fr) * | 1980-07-10 | 1982-01-20 | Roederstein Spezialfabriken für Bauelemente der Elektronik und Kondensatoren der Starkstromtechnik GmbH | Outil à main pour le flocage électrostatique d'objets |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3599038A (en) * | 1969-07-28 | 1971-08-10 | Hipotronics | Apparatus and systems for high-voltage electrostatic charging of particles |
SE386841B (sv) * | 1973-04-19 | 1976-08-23 | Atlas Copco Ab | Elektrostatisk fergspruta |
US4033506A (en) * | 1974-08-06 | 1977-07-05 | Franz Braun | Electrostatic coating guns |
US4290091A (en) * | 1976-12-27 | 1981-09-15 | Speeflo Manufacturing Corporation | Spray gun having self-contained low voltage and high voltage power supplies |
US4165022A (en) * | 1977-03-02 | 1979-08-21 | Ransburg Corporation | Hand-held coating-dispensing apparatus |
CH623489A5 (fr) * | 1977-12-08 | 1981-06-15 | Gema Ag | |
FR2424068A1 (fr) * | 1978-04-28 | 1979-11-23 | Wagner J Ag | Pistolet pulverisateur electrostatique |
US4266262A (en) * | 1979-06-29 | 1981-05-05 | Binks Manufacturing Company | Voltage controlled power supply for electrostatic coating apparatus |
US4323947A (en) * | 1979-08-13 | 1982-04-06 | J. Wagner Ag. | Electrostatic gun with improved diode-capacitor multiplier |
US4441656A (en) * | 1982-01-29 | 1984-04-10 | J. Wagner Ag | Electrostatic disabling switch for electrostatic spray guns |
FR2522991A1 (fr) * | 1982-03-08 | 1983-09-16 | G2M Lepetit | Appareil de pulverisation pneumatique de liquide sous forme d'un jet |
DE3214314A1 (de) * | 1982-04-19 | 1983-10-20 | J. Wagner AG, 9450 Altstätten | Elektrostatische spruehvorrichtung |
US4554622A (en) * | 1983-09-22 | 1985-11-19 | Graco Inc | Compact voltage multiplier for spray guns |
DE3412266A1 (de) * | 1984-04-02 | 1985-10-03 | J. Wagner AG, Altstätten | Elektrostatische farbspritzpistole |
DE3412507A1 (de) * | 1984-04-03 | 1985-10-17 | J. Wagner AG, Altstätten | Elektrostatische handspritzpistole |
FR2587919B1 (fr) * | 1985-10-02 | 1988-05-27 | Sames Sa | Appareil de projection electrostatique protege contre l'apparition d'arcs electriques |
DE3545885C1 (de) * | 1985-12-23 | 1993-03-04 | Kopperschmidt Mueller & Co | Elektrostatische Spruehpistole |
DE3644840A1 (de) * | 1986-04-04 | 1987-10-15 | Wagner Int | Elektrostatische pulver-spruehpistole |
FR2618618A1 (fr) * | 1987-07-20 | 1989-01-27 | Gema Ransburg Ag | Dispositif de revetement par pulverisation, a synchronisation de phases de la tension alternative appliquee a son transformateur, et du courant circulant dans ce transformateur |
DE3921213C1 (fr) * | 1989-06-28 | 1990-11-15 | Wagner International Ag, Altstaetten, Ch |
-
1990
- 1990-08-27 DE DE4027078A patent/DE4027078A1/de not_active Withdrawn
-
1991
- 1991-05-07 DE DE59106204T patent/DE59106204D1/de not_active Expired - Fee Related
- 1991-05-07 EP EP91107412A patent/EP0472817B1/fr not_active Expired - Lifetime
- 1991-06-10 US US07/712,435 patent/US5170315A/en not_active Expired - Fee Related
- 1991-07-02 JP JP3188200A patent/JPH04235763A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU67141A1 (fr) * | 1972-03-03 | 1973-05-22 | ||
US3902108A (en) * | 1973-02-01 | 1975-08-26 | Daniel Sion | Voltage multiplier |
US4171098A (en) * | 1974-08-06 | 1979-10-16 | Franz Braun | Electrostatic coating guns |
EP0044038A1 (fr) * | 1980-07-10 | 1982-01-20 | Roederstein Spezialfabriken für Bauelemente der Elektronik und Kondensatoren der Starkstromtechnik GmbH | Outil à main pour le flocage électrostatique d'objets |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996011062A1 (fr) * | 1994-10-11 | 1996-04-18 | Imperial Chemical Industries Plc | Generateur de haute tension |
US5992771A (en) * | 1994-10-11 | 1999-11-30 | The Procter & Gamble Company | High voltage generator |
Also Published As
Publication number | Publication date |
---|---|
EP0472817A3 (en) | 1992-09-02 |
US5170315A (en) | 1992-12-08 |
JPH04235763A (ja) | 1992-08-24 |
DE4027078A1 (de) | 1992-03-05 |
DE59106204D1 (de) | 1995-09-14 |
EP0472817B1 (fr) | 1995-08-09 |
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