PLASMA TORCH Russian patent published in 2017 - IPC B23K10/00 

FIELD: machine building.

SUBSTANCE: walls of the hollow housing of the plasma torch are insulated with a heat-resistant material on the inner side. The plasma torch also comprises a plasma-forming nozzle, a cathode with a cathode-holder and a device for supplying a plasma-forming gas. Heat pipes are used to cool the heat-loaded elements. The end of one heat pipe is installed inside the cathode and connected to the cathode. Another heat pipe is located in the housing, and its end is connected to the plasma-forming nozzle. The second ends of the mentioned heat pipes are led out of the housing and connected to radiators which are placed in a tank with a cooling liquid. Clearances between the heat-loaded elements and the heat pipes are filled with heat-conducting heat-resistant paste. Cooling with the help of the heat pipes simplifies the design of the plasma torch and reduces its dimensions, while simultaneously providing a high degree and speed of heat removal from the heat-loaded elements.

EFFECT: intensive heat removal increases the operational life, power and reliability of the plasma torch.

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