EP 0743811 A1 19961120 - Direct current arc plasma torch, specially conceived for the obtention of a chemical body by decomposition of a plasma gas
Title (en)
Direct current arc plasma torch, specially conceived for the obtention of a chemical body by decomposition of a plasma gas
Title (de)
Gleichspannungslichtbogenplasmabrenner, insbesonders bestimmt zur Erzeugung eines chemischen Stoffes durch Zersetzung eines Plasmagases
Title (fr)
Torche à plasma d'arc à courant continu, particulièrement destinée à l'obtention d'un corps chimique par décomposition d'un gaz plasmagène
Publication
Application
Priority
FR 9505972 A 19950519
Abstract (en)
The DC arc plasma torch has first and second electrodes (1,2) formed as coaxial tubes on either side of a chamber (3) into which the gas to be decomposed is injected. The electrodes are open at the ends facing the injection chamber. Electrical connections allow application of direct current to the electrodes to establish an arc discharge between them. One of the electrodes is open at its outer end (6) to allow flow of the plasma (13) generated by the arc beyond the end of the electrode. Provision is made to inject air through holes (7,8) round the periphery of the outer end of the electrode to form a fluid layer separating the plasma from the wall of the electrode.
Abstract (fr)
Torche à plasma d'arc à courant continu, notamment destinée à l'obtention d'un corps chimique à partir d'un gaz plasmagène (P) comportant ledit corps. Selon l'invention : l'électrode (2A) est en communication avec la chambre d'injection (3) du gaz plasmagène par l'intermédiaire d'une pièce tubulaire (2B) traversée par l'arc (10) et constituant la chambre de réaction dans laquelle ledit gaz plasmagène (P) donne naissance au plasma (13) sous l'action de l'arc électrique (10) ; et il est prévu des moyens (7, 8) permettant de former une barrière fluide (14) entre l'électrode (2A) et le plasma (13). <IMAGE>
IPC 1-7
IPC 8 full level
H05H 1/32 (2006.01); H05B 7/18 (2006.01); H05H 1/34 (2006.01); H05H 1/40 (2006.01)
CPC (source: EP US)
H05H 1/34 (2013.01 - EP US); H05H 1/341 (2013.01 - EP US); H05H 1/3431 (2021.05 - EP); H05H 1/3468 (2021.05 - EP); H05H 1/32 (2013.01 - EP US); H05H 1/3431 (2021.05 - US); H05H 1/3468 (2021.05 - US); H05H 1/40 (2013.01 - EP US)
Citation (search report)
- [A] EP 0605010 A1 19940706 - OSRAM SYLVANIA INC [US]
- [DA] EP 0427591 A1 19910515 - AEROSPATIALE [FR]
- [A] US 3400070 A 19680903 - TOM NAFF JOHN
- [A] US 3139509 A 19640630 - BROWNING JAMES A
- [A] FR 2207961 A1 19740621 - G N [SU]
- [A] DATABASE WPI Section Ch Week 9146, Derwent World Patents Index; Class J04, AN 91-335651, XP002011212
Designated contracting state (EPC)
BE DE GB IT NL SE
DOCDB simple family (publication)
EP 0743811 A1 19961120; EP 0743811 B1 19981104; CA 2174571 A1 19961120; DE 69600904 D1 19981210; DE 69600904 T2 19990401; FR 2734445 A1 19961122; FR 2734445 B1 19970718; JP H08339893 A 19961224; US 5688417 A 19971118; ZA 962967 B 19961022
DOCDB simple family (application)
EP 96400770 A 19960410; CA 2174571 A 19960419; DE 69600904 T 19960410; FR 9505972 A 19950519; JP 12361196 A 19960517; US 63435296 A 19960418; ZA 962967 A 19960415