STRUCTURE FOR PLASMA TORCH ELECTRODE OF MANUFACTURING NANO POWDER

• Main Authors: OH, JUNG KEUN, SHIN, MYOUNG SUN, SON, BYUNG KOO, YOO, YOUNG JONG, JEONG, HYO SOO
• Format: Patent
• Language: English; Korean
• Published: 28.02.2012
• Subjects: ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS

PURPOSE: A plasma torch electrode structure for a nano powder manufacturing process is provided to increase cooling efficiency of a trapping tube by improving a sheath gas spraying structure. CONSTITUTION: A carrier gas inlet(301) supplies bulk powder to a plasma region. An injection tube(302) injects carrier gas to the inside of a plasma torch. An end part of the injection tube is located near the vertically central part of a trapping tube(303). A plasma gas guiding tube(304) distributes plasma gas. An injection tube cooling water inlet(305) and an injection tube cooling water outlet(306) cool heat from plasma. A pair of plasma gas inlet(307) sprays the plasma gas inside of the trapping tube. A pair of sheath gas inlets(308) sprays sheath gas. An induction coil supporting tube(309) is installed on the outer circumferential surface of the trapping tube with a gap. An induction coil(310) generates plasma inside of the trapping tube. A trapping tube cooling water inlet(311) and a trapping tube cooling water outlet(312) supply cooling water.