Plasma torch electrode structure

Details Plasma torch electrode structure Plasma torch electrode structure

H - Electricity

05

H

H05H 1/34 (2006.01)

Patent

CA 2202287

An electrode structure is composed of a gas passage containing a cathode ending in a cathode tip adjacent one end of the passage and has an anode electrode adjacent to the other end of the passage. A restriction is formed within the passage between the cathode and anode electrode to restrict the cross sectional area of the passage an accelerate the flow of gas from the cathode toward the anode and thereby increase the arc length and permit a reduced amperage to voltage (A/V) ratio for a given power input to the structure.

L'invention concerne une structure d'électrodes, ménageant un passage pour du gaz, dotée d'une cathode aboutissant dans une pointe de cathode contiguë à une extrêmité du passage, et d'une anode contiguë à l'autre extrêmité du passage. Ce passage comporte un étranglement entre la cathode et l'anode de façon à rétrécir la section et à faire s'accélérer le flux de gaz de la cathode vers l'anode et, partant, s'étirer la longueur d'arc. De la sorte, le rapport entre l'intensité et la tension est diminué pour une puissance consommée donnée.

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