Nozzle for a plasma arc torch with an exit orifice having an inlet radius and an extended length to diameter ratio
DCFirst Claim
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1. A plasma arc torch comprising:
- a torch body including a plasma gas flow path for directing a plasma gas from a plasma gas inlet to a plasma chamber in which a plasma arc is formed;
a nozzle mounted relative to an electrode at a first end of the torch body to define the plasma chamber, the nozzle comprising a hollow, body portion defining a cavity and a substantially solid, head portion formed integrally with the body portion defining an exit orifice extending from the chamber,wherein the exit orifice has a converging inlet and an outlet, the inlet having a radius of curvature and the exit orifice having a length to diameter ratio of greater than 3.
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Abstract
A plasma arc torch includes a torch body and a nozzle mounted relative to an electrode at a first end of the torch body to define a plasma chamber. The torch body includes a plasma gas flow path for directing a plasma gas from a plasma gas inlet to a plasma chamber in which a plasma arc is formed. The nozzle includes a hollow, body portion defining a cavity and a substantially solid, head portion formed integrally with the body portion defining an exit orifice extending from the chamber. The exit orifice has a converging inlet and an outlet, where the inlet has a radius of curvature, and the exit orifice has a length to diameter ratio of greater than 2.5.
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Citations
17 Claims
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1. A plasma arc torch comprising:
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a torch body including a plasma gas flow path for directing a plasma gas from a plasma gas inlet to a plasma chamber in which a plasma arc is formed; a nozzle mounted relative to an electrode at a first end of the torch body to define the plasma chamber, the nozzle comprising a hollow, body portion defining a cavity and a substantially solid, head portion formed integrally with the body portion defining an exit orifice extending from the chamber, wherein the exit orifice has a converging inlet and an outlet, the inlet having a radius of curvature and the exit orifice having a length to diameter ratio of greater than 3. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11)
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10. A nozzle for a plasma arc torch having a torch body, and an electrode mounted in the body in relative to the nozzle to define a plasma chamber therebetween, the nozzle comprising:
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a hollow, body portion defining a cavity; and a substantially solid, head portion formed integrally with the body portion defining an exit orifice extending from the chamber, the exit orifice having a converging inlet and an outlet, wherein the exit orifice has a length to diameter ratio greater than 3 and the inlet has a radius of curvature. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification