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Devices for gas cooling plasma arc torches and related systems and methods

A plasma arc and gas cooling technology, applied to plasma welding equipment, plasma, electrode support devices, etc., can solve the problems of increasing equipment costs and easy leakage

Active Publication Date: 2015-02-11
HYPERTHERM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

External cooling systems may increase associated equipment costs, may require more maintenance, may be spillable, and in some cases may require disposal of cooling media

Method used

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  • Devices for gas cooling plasma arc torches and related systems and methods
  • Devices for gas cooling plasma arc torches and related systems and methods
  • Devices for gas cooling plasma arc torches and related systems and methods

Examples

Experimental program
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Embodiment Construction

[0087] In some aspects, the nozzle may produce a greater cooling effect than some other conventional nozzles that do not have such modified features, the former being proportioned to be shorter, wider, and / or having longer perforations (i.e. , thicker distal region).

[0088] figure 1 An example plasma torch 50 is shown that may be used with various aspects and embodiments of the plasma arc torch cooling systems, apparatus, and methods described herein. refer to figure 1 , the plasma torch 50 may include an electrode 60 , a nozzle 100 and a shield 150 . The torch 50 may be in electrical communication (eg, using a current carrying cable (not shown)) with a power source (not shown) and receive electrical current from the power source. The current received from the power source is transferred to the electrode 60 towards the nozzle 100 through the current path.

[0089] In use, a gas (eg, plasma gas) is directed to a plasma boost chamber 80 defined between the electrode 60 a...

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PUM

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Abstract

In some aspects, nozzles for plasma torches can include a nozzle body having a proximal end and a distal end that define a nozzle body length and a longitudinal axis. The body can include an exit orifice defined by the distal end; a plenum extending from the proximal end to a plenum floor, a distance from the plenum floor to the distal end defining a plenum floor thickness, and a distance from the plenum floor to the proximal end defining a proximal end height; and a bore extending from the plenum floor to the exit orifice that has a bore length and a bore width. The nozzle body has a nozzle width in a direction transverse to the longitudinal axis. The nozzle body length is greater than the width and a ratio of the proximal end height to the plenum floor thickness is less than 2.0.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Patent Application Serial No. 61 / 858,235, filed July 25, 2013, entitled "Plasma Arc Torch Nozzles, Shields and Retaining Caps" , the contents of which are incorporated herein by reference in their entirety. technical field [0003] The present invention relates generally to thermal cutting torches (eg, plasma arc torches), and more particularly to apparatus and related systems and methods for gas cooled plasma arc torches. Background technique [0004] The basic components of a modern conventional plasma arc torch include the torch body, an electrode (e.g. cathode) mounted within the body, a nozzle with a central hole (e.g. anode), associated electrical connections and cooling passages, and an arc control fluid, The nozzle can produce a pilot arc to the electrodes to ignite a plasma arc in a flow of a suitable gas (eg, air, nitrogen or oxygen). The pilot arc ca...

Claims

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Application Information

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IPC IPC(8): B23K10/00H05H1/34
CPCH05H2001/3457H05H1/34H05H1/28B23K9/285H05H1/3457H05H1/3405
Inventor 张瑜段正迈克尔·F·可普罗斯特大卫·阿甘
Owner HYPERTHERM INC
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