The present invention relates to a plasma-generating device, comprising an anode, a cathode and at least one intermediate electrode, said intermediate electrode being arranged at least partly between said anode and said cathode, and said intermediate electrode and said anode forming at least a part of a plasma channel which has an opening in said anode. Further, the plasma-generating device comprises at least one coolant channel which is arranged with at least one outlet opening which is positioned beyond, in the direction from the cathode to the anode, said at least one intermediate electrode, and the channel direction of said coolant channel at said outlet opening has a directional component which is the same as that of the channel direction of the plasma channel at the opening thereof. The invention also concerns a plasma surgical device and use of such a plasma surgical device.

The present invention relates to a plasma-generating device, comprising an anode, a cathode and at least one intermediate electrode, said intermediate electrode being arranged at least partly between said anode and said cathode, and said intermediate electrode and said anode forming at least a part of a plasma channel which has an opening in said anode. Further, the plasma-generating device comprises at least one coolant channel which is arranged with at least one outlet opening which is positioned beyond, in the direction from the cathode to the anode, said at least one intermediate electrode, and the channel direction of said coolant channel at said outlet opening has a directional component which is the same as that of the channel direction of the plasma channel at the opening thereof. The invention also concerns a plasma surgical device and use of such a plasma surgical device.

The invention relates to an apparatus for generating an atmospheric plasma jet for treating a surface of a workpiece with a plasma nozzle which is configured to generate an atmospheric plasma jet. The plasma nozzle has a nozzle arrangement with a nozzle opening for discharging a plasma jet to be generated in the plasma nozzle. The nozzle arrangement is rotatable about an axis of rotation and wherein the nozzle opening has a cross-section with a shape differing from a circular shape.

A nozzle for use with a plasma arc torch is provided. The nozzle has a nozzle body having a length that extends from a proximal end to a distal end, a central bore disposed within the nozzle body along a central axis having a feed orifice at the proximal end of the nozzle body, and a discharge orifice at the distal end of the nozzle body. The central bore has a series of internal sections that transition with one or more radial edges between the feed orifice and the discharge orifice. The series of internal sections have a first section beginning at the feed orifice transitioning to a converging section transitioning at a throat to a diverging section ending at the discharge orifice. The length of the converging section is longer than a length of the diverging section. A Venturi effect is created by the converging and diverging sections of the nozzle.

A nozzle for use with a plasma arc torch is provided. The nozzle has a nozzle body having a length that extends from a proximal end to a distal end, a central bore disposed within the nozzle body along a central axis having a feed orifice at the proximal end of the nozzle body, and a discharge orifice at the distal end of the nozzle body. The central bore has a series of internal sections that transition with one or more radial edges between the feed orifice and the discharge orifice. The series of internal sections have a first section beginning at the feed orifice transitioning to a converging section transitioning at a throat to a diverging section ending at the discharge orifice. The length of the converging section is longer than a length of the diverging section. A Venturi effect is created by the converging and diverging sections of the nozzle.

The present disclosure relates to generating energy. The teachings thereof may be embodied in methods for burning a reaction gas with an electropositive metal. An method for generating energy may include: supplying a reaction gas and an electropositive metal separately to at least one nozzle; wherein the electropositive metal is selected from alkali metals, alkaline earth metals, aluminum, zinc, mixtures, and/or alloys thereof; burning the reaction gas with the electropositive metal; and coverting the reaction gas before or during burning at least temporarily into a plasma.

The present invention relates to a plasma-generating device, comprising an anode, a cathode and at least one intermediate electrode, said intermediate electrode being arranged at least partly between said anode and said cathode, and said intermediate electrode and said anode forming at least a part of a plasma channel which has an opening in said anode. Further, the plasma-generating device comprises at least one coolant channel which is arranged with at least one outlet opening which is positioned beyond, in the direction from the cathode to the anode, said at least one intermediate electrode, and the channel direction of said coolant channel at said outlet opening has a directional component which is the same as that of the channel direction of the plasma channel at the opening thereof. The invention also concerns a plasma surgical device and use of such a plasma surgical device.

With an atmospheric pressure plasma generating device of the present invention, nozzle block 36 in which fourth gas passages 66 from which plasma gas is emitted are formed, is covered by cover 22, and through-hole 70 is formed in the cover such that the leading end of the fourth gas passage is positioned on the inside. Heated gas is supplied inside the cover. Thus, heated gas is emitted from the through-hole of the cover, and plasma gas is emitted so as to penetrate the heated gas. By the plasma gas being surrounded by the heated gas in this manner, deactivation of the plasma gas is prevented. Also, distance X between the leading end of the fourth gas passage and an opening of the through-hole at an outer wall of the cover is set from 0 to 2 mm in an emission direction of the plasma gas. By this, it is possible to appropriately cover plasma gas with heated gas without obstructing the flow of the plasma gas.

Design advances for improving the performance of a plasma torch. The use of one or more of various advances described herein can improve the efficiency and effectiveness of the torch, the reactor and the manufacturing process. The use of the torch with hydrogen plasma gas, natural gas feedstock, and carbon black production are also described.

A nozzle for a gas-cooled plasma arc torch is provided. The nozzle includes a nozzle body formed from a first metal. The nozzle body comprises a proximal portion and a distal portion extending along a longitudinal axis. The distal portion of the nozzle body comprises a first bore. The nozzle also includes an arc transition component formed from a second metal. The arc transition component is coupled to the distal portion of the nozzle body and comprises a second bore configured to substantially align with the first bore when the arc transition component is coupled to the nozzle body. The second metal of the arc transition component comprises a noble metal and the second metal is different from the first metal.