EP 0404344 A1 19901227 - Electrostatic spray process and apparatus.
Title (en)
Electrostatic spray process and apparatus.
Title (de)
Verfahren und Vorrichtung zur elektrostatischen Zerstäubung.
Title (fr)
Procédé et appareil de pulvérisation électrostatique.
Publication
Application
Priority
GB 8914506 A 19890623
Abstract (en)
An electrostatic liquid spraying apparatus having a sprayhead comprising a pair of atomising edges (12,13) extending side-by-side, liquid feed means (19) to each of the atomising edges and a plurality of field intensifying electrodes (26,27,28a,28b) extending lengthwise of the atomising edges (12,13). A pair of the electrodes (26,28a) are associated with one atomising edge (12) with one disposed on either side thereof and forwardly of the atomising edge (12). Similarly a pair of the electrodes (27,28b) are associated with the other atomising edge (13). Electric power supply means impose a potential difference between the atomising edges (12,13) and the electrodes (26,27,28a,28b). In order to achieve satisfactory spraying: a) the spacing between the atomising edges (12,13) is in the range, 20-300 mm. b) the spacing between each of the electrodes (26,27,28a,28b) and their associated atomising edges (12,13) is not less than 3 mm. and c) The measurable potential difference between the conductors through which the potential difference is imposed between the atomising edges (12,13) and the electrodes (26,27,28a,28b) is in the range 1-3 KV per mm. of the spacing of the electrodes (26,27,28a,28b) from the atomising edges (12,13). o
IPC 1-7
IPC 8 full level
B05B 5/025 (2006.01); B05B 5/08 (2006.01); B05D 1/04 (2006.01)
CPC (source: EP)
B05B 5/0255 (2013.01); B05B 5/087 (2013.01)
Citation (search report)
- [AD] EP 0186983 B1 19890322
- [A] US 1958406 A 19340515 - DARRAH WILLIAM A
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0404344 A1 19901227; AU 5762490 A 19910103; CA 2018551 A1 19901223; CA 2018551 C 20000328; GB 8914506 D0 19890809; GB 9011465 D0 19900711; IE 901842 A1 19910102; IE 901842 L 19901223; JP H0330848 A 19910208; PT 94441 A 19920228; ZA 904001 B 19910424; ZW 8490 A1 19910227
DOCDB simple family (application)
EP 90305391 A 19900518; AU 5762490 A 19900619; CA 2018551 A 19900608; GB 8914506 A 19890623; GB 9011465 A 19900522; IE 184290 A 19900522; JP 16298790 A 19900622; PT 9444190 A 19900621; ZA 904001 A 19900523; ZW 8490 A 19900523