EP 0823192 B1 20000920 - PLASMA TORCH FOR TRANSMITTED ARCS
Title (en)
PLASMA TORCH FOR TRANSMITTED ARCS
Title (de)
PLASMABRENNER FÜR ÜBERTRAGENEN LICHTBOGEN
Title (fr)
CHALUMEAU A PLASMA POUR ARC ELECTRIQUE
Publication
Application
Priority
- CH 9700065 W 19970221
- CH 47196 A 19960223
Abstract (en)
[origin: US6002096A] PCT No. PCT/CH97/00065 Sec. 371 Date Dec. 29, 1997 Sec. 102(e) Date Dec. 29, 1997 PCT Filed Feb. 21, 1997 PCT Pub. No. WO97/31509 PCT Pub. Date Aug. 28, 1997The plasma torch produces a transferred arc and has only one electrode integrated in the torch with the counter electrode being provided by the material being treated. The torch includes an outer housing (3), a single hollow electrode (5) arranged in the outer housing (3) and a gas vortex generator device (7) connected with the electrode. The gas vortex generator device (7) includes a rotationally symmetric ring (R) provided with at least two rows of throughgoing holes (10) axially spaced from each other and an impact wall (P) associated with an upper row of the throughgoing holes, so that a satisfactory two-part gas vortex flow is formed. By varying the gas pressure in an oscillating manner, the spot of the arc is continuously displaced in an axial direction (A). An additional gas feed (8) is provided so that gas can be fed axially directly to the plasma jet.
IPC 1-7
IPC 8 full level
H05H 1/34 (2006.01)
CPC (source: EP US)
H05H 1/34 (2013.01 - EP US); H05H 1/3431 (2021.05 - EP); H05H 1/3468 (2021.05 - EP); H05H 1/3478 (2021.05 - EP); H05H 1/3431 (2021.05 - US); H05H 1/3468 (2021.05 - US); H05H 1/3478 (2021.05 - US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
WO 9731509 A1 19970828; AT E196587 T1 20001015; CH 690408 A5 20000831; DE 59702375 D1 20001026; EP 0823192 A1 19980211; EP 0823192 B1 20000920; US 6002096 A 19991214
DOCDB simple family (application)
CH 9700065 W 19970221; AT 97904327 T 19970221; CH 47196 A 19960223; DE 59702375 T 19970221; EP 97904327 A 19970221; US 98194597 A 19971229