EP 0913203 A1 19990506 - Method and apparatus for powder coating with purging air supply
Title (en)
Method and apparatus for powder coating with purging air supply
Title (de)
Verfahren und Vorrichtung zum Pulver-Sprühbeschichten
Title (fr)
Méthode et appareil de revêtement par poudre avec alimentation d'air de purge
Publication
Application
Priority
DE 19748375 A 19971103
Abstract (en)
The arrangement has a powder spray device (2), an injector (26) for pneumatic powder delivery to the spray device and a powder line (22) connecting an injector powder outlet to a spray device powder inlet. The injector, powder line and spray device form an air-powder path with at least one flushing air inlet (73) at a flushing air delivery point, from where the flow resistance downstream to the spray device is smaller than upstream to the injector. The inlet is connected via an automatically switchable blocking element to a compressed air source to drive flushing air from the inlet through the air-powder path out of the spray device. An independent claim is also included for a method of using the arrangement.
Abstract (de)
Pulver-Sprühbeschichtungsvorrichtung enthaltend eine Sprühvorrichtung (2); einen Injektor (26) zur pneumatischen Förderung von Pulver zur Sprühvorrichtung (2); mindestens einen Spülluft-Einlaß (73) zur Zufuhr von Spül-Druckluft in den Luft-Pulver-Weg an einer Spülluft-Zufuhr-Stelle, von wo der Strömungswiderstand für die Spül-Druckluft stromabwärts bis durch die Sprühvorrichtung (2) hindurch kleiner ist als stromaufwärts bis durch den Injektor (26) hindurch, um Spül-Druckluft von dem Spülluft-Einlaß (73) durch den Luft-Pulver-Weg aus der Sprühvorrichtung (2) zu treiben. <IMAGE>
IPC 1-7
IPC 8 full level
B05D 1/12 (2006.01); B05B 5/025 (2006.01); B05B 5/16 (2006.01); B05B 7/14 (2006.01); B05C 11/00 (2006.01); B05C 11/10 (2006.01); B05D 7/24 (2006.01)
CPC (source: EP US)
B05B 7/1404 (2013.01 - EP US); B05B 7/1472 (2013.01 - EP US); B05B 7/1486 (2013.01 - EP US)
Citation (search report)
- [X] EP 0204437 A2 19861210 - NORDSON CORP [US]
- [A] US 4314669 A 19820209 - MOOS KURT
- [A] DE 19519092 A1 19951130 - I T M CORP [JP]
- [A] EP 0689875 A2 19960103 - GEMA VOLSTATIC AG [CH]
- [A] DE 3542710 A1 19870604 - BOHNACKER TEGOMETALL [DE]
- [A] WO 9413405 A1 19940623 - NORDSON CORP [US], et al
Designated contracting state (EPC)
AT CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0913203 A1 19990506; EP 0913203 B1 20040317; AT E261777 T1 20040415; DE 19748375 A1 19990506; DE 59810986 D1 20040422; JP H11207214 A 19990803; US 6217654 B1 20010417
DOCDB simple family (application)
EP 98115238 A 19980813; AT 98115238 T 19980813; DE 19748375 A 19971103; DE 59810986 T 19980813; JP 31269698 A 19981104; US 18435598 A 19981102