Plasmatron

• US 4,034,250 A
• Filed: 08/16/1976
• Issued: 07/05/1977
• Est. Priority Date: 08/16/1976
• Status: Expired due to Term

• Current Assignee: Alexandr Mikhailovich Merkher, Jury Yakovlevich Kiselev, Stanislav Antonovich Sokolovsky
• Original Assignee: Alexandr Mikhailovich Merkher, Jury Yakovlevich Kiselev, Stanislav Antonovich Sokolovsky
• Inventors: Kiselev, Jury Yakovlevich, Merkher, Alexandr Mikhailovich, Sokolovsky, Stanislav Antonovich
• Primary Examiner(s): Demeo, Palmer C.
• Application Number:
  US05/714,604
• Time in Patent Office: 323 Days
• Field of Search: 313/231.4, 313/231.5, 313/155, 313/153, 313/32, 219/121 P
• US Class Current: 313/32
• CPC Class Codes: H01J 7/24 Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
• CPC Class Codes: H05H 1/28 Cooling arrangements
• CPC Class Codes: H05H 1/3405 Arrangements for stabilising or constricting the arc, e.g. by an additional gas flow
• CPC Class Codes: H05H 1/3421 Transferred arc or pilot arc mode
• CPC Class Codes: H05H 1/3436 Hollow cathodes with internal coolant flow
• CPC Class Codes: H05H 1/3468 Vortex generators

Abstract

A plasmatron comprises a casing wherein a water-cooled cylindrical hollow electrode is placed so that its bottom faces the power lead-in and the butt contacts an annular insulating vortex generator which contacts a water-cooled nozzle. The casing also houses a lead-in coil enveloping the cylindrical hollow electrode and positioned with a certain clearance between the electrode and the lead-in coil. One end of the coil is connected to the power lead-in and the other to the butt of the cylindrical hollow electrode.

Claims

1. A plasmatron comprising:

a casing having a first butt and a second butt;

a power lead-in positioned in the first butt of said casing;

a cylindrical hollow electrode positioned in said casing at a certain distance from said lead-in and having a bottom facing said lead-in and a butt end;

a lead-in coil having a first end and a second end and enveloping said cylindrical hollow electrode and positioned with a clearance between said electrode and said coil, the first end of said coil being connected to said lead-in and the second end being connected to said butt of said cylindrical hollow electrode;

an annular vortex generator made of insulating material positioned in said casing along its periphery and having a first butt and a second butt and at least one passage tangential to the inner annular surface of said vortex generator, the first butt being in contact with said butt of said electrode;

a nozzle positioned in the second butt of said casing and being in contact with the second butt of said annular vortex generator;

a means of supplying cooling water into said clearance between said electrode and said coil, to said nozzle and of removing said water therefrom;

a means of supplying air through said passage of said vortex generator into the space of said electrode;

a means of supplying said electrode and said nozzle with electricity.

2. A plasmatron as claimed in claim 1 comprising a support ring having a butt and lugs, said butt of said support ring being in contact with said second end of said coil and said lugs being in contact with said nozzle.

3. A plasmatron as claimed in claim 1 wherein the loops of said coil are uniform in pitch.

4. A plasmatron as claimed in claim 3 comprising a support ring having a butt and lugs, said butt of said support ring being in contact with said second end of said coil and said lugs being in contact with said nozzle.