EP1245291A2 - Ventileinheit für eine elektrostatische Beschichtungsanlage - Google Patents
Ventileinheit für eine elektrostatische Beschichtungsanlage Download PDFInfo
- Publication number
- EP1245291A2 EP1245291A2 EP02006090A EP02006090A EP1245291A2 EP 1245291 A2 EP1245291 A2 EP 1245291A2 EP 02006090 A EP02006090 A EP 02006090A EP 02006090 A EP02006090 A EP 02006090A EP 1245291 A2 EP1245291 A2 EP 1245291A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- unit according
- valve unit
- signal
- sensor
- 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
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
- B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
- B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
- B05B1/306—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
-
- 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
- B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
Definitions
- the invention is accordingly based on the object of a valve unit specify the switch position even under high voltage can be queried with as little delay as possible.
- a ram or shaft member 10 On its back facing away from the valve needle 1 is on the Piston 6 a ram or shaft member 10 attached, the same axis with the valve needle 1, for example, within the Compression spring 8 can be arranged.
- the end part 11 facing away from the piston 6 has the shaft member 10 as shown, an optically reflective surface element 12.
- the reflective surface of the element 12 can be flat be and around the entire circumference of the cross section, for example extend square end portion of the shaft.
- the end part 11 provided with the reflective element 12 is in the drawing in the two switching positions of the main needle valve shown. At 11, 12 they are in the (left) The closed position can be seen at 11 ', 12' in its (right) valve opening position.
- the needle stroke H between these two Switch positions can be about 5 mm, for example.
- the shaft 10 is in a recess coaxial to the needle axis 14 of the valve housing, in which a radial, that is, an opening running transversely to the needle axis through the housing 15 leads.
- a holding and positioning body is seated in the opening 15 17 for two optical fiber units 20 and 21, whose optical end faces with the inner wall of the recess 14 are aligned in the two places where the reflective element 12, 12 'in the two switching positions located.
- the reflective element is therefore closed Main needle valve closely adjacent to the face of the Optical fiber unit 20 and with the valve open End face of the unit 21 opposite. The mutual distance the central axes of the units 20, 21 correspond to the valve needle stroke H.
- the shaft element 10 By approximating the the shaft element 10 displacing sensor element can change the polarization direction of that passed through the polarizer Light in the sensor element for generating a light signal be rotated.
- One to the polarizer connected optical fiber arrangement leads to a remote, located outside the high voltage range electronic device for generating a light signal corresponding electrical signal.
- the sensor element can contain a reflector that from the polarizer returns incoming light to the analyzer, where between the polarizer and the reflector a refractive element (Faraday effect element) or a prism is located and an optical fiber to the polarization device for the light supplied to the sensor element and to the analyzer an optical fiber for that of the remote electronic device supplied light are connected.
- Such optical Sensors are known per se and are commercially available.
- a or two sensors e.g. at the locations of the optical fibers 20 and / or 21 may be arranged in Fig. 1.
- the one from the sensor in the two switch positions triggered binary signals expediently have the same binary value.
- the binary signals are from the electronic sensor device generated at a distance from the valve Location outside the high voltage range and with connected to the valve unit via the optical fiber arrangement is. If the shaft member 10 between its two positions is shifted, the sensor signal changes due to the lying between the two signal generating elements Range first in the opposite binary value before the first binary value again when the other valve position is reached is produced.
- an electronic control device can be determined whether, for example, after Generating a control signal for switching the valve (and after the disappearance of the first binary value) within a prescribed time again the first binary value as a message the other valve position is generated. Isn't that Case, there is a fault, which is reported by an alarm signal becomes.
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Geophysics And Detection Of Objects (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
- Fig. 1
- den Rotationszerstäuber mit der Ventileinheit; und
- Fig. 2 und Fig. 3
- zwei abgewandelte Ausführungsformen.
Claims (14)
- Ventileinheit für eine elektrostatische Anlage zur Serienbeschichtung von Werkstücken
mit einem ferngesteuert umschaltbaren Ventil, dessen bewegbares Ventilglied (1) zwischen zwei Schaltstellungen verschiebbar ist und in der einen Schaltstellung den Weg für ein durch das Ventil fließendes Medium freigibt, während das Ventil geschlossen ist, wenn sich das Ventilglied (1) in seiner anderen Schaltstellung befindet,
insbesondere für einen im Betrieb unter Hochspannung stehenden Zerstäuber,
dadurch gekennzeichnet, daß zur Abfrage der Schaltstellung des Ventils und zur Erzeugung eines entsprechenden Abfragesignals eine opto-elektronische Sensoreinrichtung mit mindestens einem Lichtwellenleiter (20, 21) an einem mit dem Ventilglied (1) verschiebbaren oder einen Teil des Ventilglieds bildenden Bauglied (10) vorgesehen ist. - Ventileinheit nach Anspruch 1, dadurch gekennzeichnet, daß das verschiebbare Bauglied (10) mindestens eine optisch reflektierende Fläche (12) hat, die der Sensorfläche des Lichtwellenleiters (20, 21) gegenübersteht, wenn sich das Ventilglied (1) in seiner zu meldenden Schaltstellung befindet.
- Ventileinheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß für jede der Schaltstellungen je eine optoelektronische Sensoreinrichtung mit jeweils mindestens einem Lichtwellenleiter (20, 21) vorgesehen ist.
- Ventileinheit nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, daß das bewegbare Ventilglied (1) die Ventilnadel eines Nadelventils ist.
- Ventileinheit nach Anspruch 4, dadurch gekennzeichnet, daß das verschiebbare Bauglied (10) ein mit der Ventilnadel (1) achsgleich an den Kolben (6) des pneumatischen Ventilantriebs angesetztes Schaftglied ist, das in einer Ausnehmung (14) des Ventilgehäuses verschiebbar ist, in die eine bezüglich der Nadelachse radiale Öffnung (15) für den oder die Lichtwellenleiter (20, 21) führt.
- , Ventileinheit nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, daß das bewegbare Ventilglied mit der Membran eines Membranventils verbunden ist.
- Ventileinheit nach Anspruch 1, dadurch gekennzeichnet, daß die Lichtwellenleiter (LWL1, LWL2) mindestens eine Lichtschranke für das Bauglied (10) bilden.
- Ventileinheit nach Anspruch 1, dadurch gekennzeichnet, dass an oder in dem verschiebbaren Bauglied (10) ein magnetisch wirksames Geberelement angeordnet ist,
dass ein Sensorelement vorgesehen ist, das eine optische Polarisationseinrichtung enthält,
dass durch Annäherung des Geberelements die Polarisation von durch die Polarisationseinrichtung geleitetem Licht in dem Sensorelement magnetooptisch zur Erzeugung eines Lichtsignals verändert wird,
und dass an die Polarisationseinrichtung eine Lichtwellenleiteranordnung angeschlossen ist, die zu einer entfernten elektronischen Einrichtung zur Erzeugung eines dem Lichtsignal entsprechenden elektrischen Signals führt. - Ventileinheit nach Anspruch 8, dadurch gekennzeichnet, dass das Sensorelement einen Reflektor enthält, der das von der Polarisationseinrichtung kommende Licht zu einem Analysator der Polarisationseinrichtung zurückleitet, wobei sich zwischen der Polarisationseinrichtung und dem Reflektor ein die Polarisationsrichtung drehendes Brechungselement oder Prisma befindet, und dass an die Polarisationseinrichtung ein Lichtleiter für das dem Sensorelement zugeführte Licht und ein Lichtleiter für das der elektronischen Einrichtung zugeführte Licht angeschlossen sind.
- Ventileinheit nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass an dem verschiebbaren Bauglied (10) zwei in der Verschiebungsrichtung voneinander beabstandete Signalerzeugungselemente vorgesehen sind, von denen das erste Element ein Binärsignal der Sensoreinrichtung auslöst, wenn sich das Ventilglied (1) in seiner einen Schaltstellung befindet, während das zweite Signalerzeugungselement ein Binärsignal der Sensoreinrichtung auslöst, wenn sich das Ventilglied (1) in seiner anderen Schaltstellung befindet.
- Ventileinheit nach Anspruch 10, dadurch gekennzeichnet, dass die beiden Signalerzeugungselemente des verschiebbaren Baugliedes (10) durch optisch reflektierende Flächen gebildet sind.
- Ventileinheit nach Anspruch 10, dadurch gekennzeichnet, dass die beiden Signalerzeugungselemente durch Lichtschrankenöffnungen gebildet sind.
- Ventileinheit nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, dass die beiden Binärsignale denselben Binärwert haben, und dass das Sensorsignal der Sensoreinrichtung auf den entgegengesetzten Binärwert umgeschaltet wird, wenn das verschiebbare Bauglied (10) zwischen seinen beiden Stellungen verschoben wird.
- Ventileinheit nach einem der Ansprüche 10 bis 13, gekennzeichnet durch eine elektronische Kontrolleinrichtung, mit der festgestellt wird, ob das Binärsignal innerhalb einer vorgegebenen Zeit nach dem Erzeugen eines Steuersignals zum Umschalten des Ventils erscheint, und dass andernfalls ein Alarmsignal erzeugt wird.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10115472 | 2001-03-29 | ||
DE10115472A DE10115472A1 (de) | 2001-03-29 | 2001-03-29 | Ventileinheit für eine elektrostatische Beschichtungsanlage |
DE10161549 | 2001-12-14 | ||
DE10161549 | 2001-12-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1245291A2 true EP1245291A2 (de) | 2002-10-02 |
EP1245291A3 EP1245291A3 (de) | 2005-01-26 |
EP1245291B1 EP1245291B1 (de) | 2006-10-18 |
Family
ID=26008941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02006090A Expired - Lifetime EP1245291B1 (de) | 2001-03-29 | 2002-03-18 | Ventileinheit für eine elektrostatische Beschichtungsanlage |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1245291B1 (de) |
AT (1) | ATE342774T1 (de) |
DE (1) | DE50208463D1 (de) |
ES (1) | ES2272593T3 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008037456A1 (de) | 2006-09-27 | 2008-04-03 | Dürr Systems GmbH | Elektrostatische zerstäuberanordnung |
DE102006045631A1 (de) * | 2006-09-27 | 2008-04-10 | Dürr Systems GmbH | Elektrostatische Zerstäuberanordnung |
DE102007004819A1 (de) | 2007-01-31 | 2008-08-21 | Dürr Systems GmbH | Elektrostatische Zerstäuberanordnung |
US8333164B2 (en) | 2006-12-12 | 2012-12-18 | Duerr Systems, Gmbh | Coating apparatus comprising a metering device |
US9016596B2 (en) | 2007-07-20 | 2015-04-28 | Durr Systems Gmbh | Method for process diagnosis and rotary atomizer arrangement |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007029195A1 (de) | 2007-06-25 | 2009-02-19 | Dürr Systems GmbH | Beschichtungseinrichtung mit einer Dosiervorrichtung |
DE102006058562A1 (de) | 2006-12-12 | 2008-08-14 | Dürr Systems GmbH | Beschichtungseinrichtung mit einer Dosiervorrichtung |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4306800A1 (de) | 1993-03-04 | 1994-09-08 | Duerr Gmbh & Co | Beschichtungsvorrichtung mit einem Rotationszerstäuber |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4356397A (en) * | 1980-06-18 | 1982-10-26 | Westinghouse Electric Corp. | Optical valve position sensor system |
GB2159942A (en) * | 1984-06-09 | 1985-12-11 | Michael Roderick Oliver | Fluid valve position sensor |
DE19650781A1 (de) * | 1996-12-06 | 1998-06-10 | Itw Oberflaechentechnik Gmbh | Sprühbeschichtungseinrichtung |
-
2002
- 2002-03-18 EP EP02006090A patent/EP1245291B1/de not_active Expired - Lifetime
- 2002-03-18 ES ES02006090T patent/ES2272593T3/es not_active Expired - Lifetime
- 2002-03-18 AT AT02006090T patent/ATE342774T1/de not_active IP Right Cessation
- 2002-03-18 DE DE50208463T patent/DE50208463D1/de not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4306800A1 (de) | 1993-03-04 | 1994-09-08 | Duerr Gmbh & Co | Beschichtungsvorrichtung mit einem Rotationszerstäuber |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008037456A1 (de) | 2006-09-27 | 2008-04-03 | Dürr Systems GmbH | Elektrostatische zerstäuberanordnung |
DE102006045631A1 (de) * | 2006-09-27 | 2008-04-10 | Dürr Systems GmbH | Elektrostatische Zerstäuberanordnung |
US8485125B2 (en) | 2006-09-27 | 2013-07-16 | Dürr Systems GmbH | Electrostatic spraying arrangement |
US8333164B2 (en) | 2006-12-12 | 2012-12-18 | Duerr Systems, Gmbh | Coating apparatus comprising a metering device |
DE102007004819A1 (de) | 2007-01-31 | 2008-08-21 | Dürr Systems GmbH | Elektrostatische Zerstäuberanordnung |
US9016596B2 (en) | 2007-07-20 | 2015-04-28 | Durr Systems Gmbh | Method for process diagnosis and rotary atomizer arrangement |
Also Published As
Publication number | Publication date |
---|---|
EP1245291A3 (de) | 2005-01-26 |
ATE342774T1 (de) | 2006-11-15 |
EP1245291B1 (de) | 2006-10-18 |
DE50208463D1 (de) | 2006-11-30 |
ES2272593T3 (es) | 2007-05-01 |
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