H - Electricity – 05 – H
Patent
H - Electricity
05
H
H05H 1/28 (2006.01) H05H 1/30 (2006.01)
Patent
CA 2085133
A high performance induction plasma torch (1) com- prises a cylindrical torch body (2) made of cast ceramic or composite polymer, a coaxial cylindrical plasma confinement tube (9) located inside the torch body (2), a gas distributor head (11) secured to one end of the torch body (2) to supply the confinement tube (9) with gaseous substances, a cylindri- cal and coaxial induction coil (3) completely embedded in the ceramic or polymer material of the torch body (2), and a thin annular chamber (25) separating the coaxial torch body (2) and confinement tube (9). This confinement tube can be made of pure or composite ceramic materials based on sin- tered or reaction bonded silicon nitride, boron nitride, alumi- num nitride or alumina, or any combinations of them with varying additives and fillers. The annular chamber (25) is about 1 mm thick and high velocity cooling water flows there- in to efficiently cool the plasma confinement tube (9).
Boulos Maher I.
Jurewicz Jerzy
Bkp Gp
Tekna Plasma Systems Inc.
Universite de Sherbrooke
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