Device for exchanging a nozzle of a vapor plasma burner and nozzle and guard ring

• US 20090045174A1
• Filed: 09/05/2006
• Published: 02/19/2009
• Est. Priority Date: 09/09/2005
• Status: Abandoned Application

• Current Assignee: Fronius International GmbH (G&K Privatstiftung)
• Original Assignee: Fronius International GmbH (G&K Privatstiftung)
• Inventors: Haberler, Wolfgang, Pauser, Heribert, Langeder, Harald
• Application Number:
  US11/990,790
• Publication Number:
  US 20090045174A1
• Time in Patent Office: Days
• US Class Current: 219/121.500
• CPC Class Codes: H05H 1/3423 Connecting means, e.g. electrical connecting means or fluid connections
• CPC Class Codes: H05H 1/3457 Nozzle protection devices

Abstract

The invention relates to a device for exchanging a nozzle (21) of a vapor plasma burner (6), comprising a housing, a cathode (38) connected to a cathode support, and an anode, configured as a nozzle (31) and having an exit opening (22). The nozzle (21) can be connected to a base (69) of the vapor plasma burner (6). An insulating protective cap (23) is disposed in the area of the exit opening (22). The protective cap (23) can be detached via a spring element (66) and is rotationally secured to the base (69) of the vapor plasma burner (6). The protective cap (23), at its front, has a recess (24) which corresponds to the nozzle (21) and into which the nozzle (21) can be inserted. The nozzle (21) can be detached from or secured to the base (69) without the use of auxiliary means by displacing the protective cap (23).

Claims

1. :

A device for exchanging a nozzle (21) of a vapor plasma burner (6) comprising a housing, a cathode (38) connected to a cathode support, and an anode, configured as a nozzle (21) and having an exit opening (22), wherein said nozzle (21) can be connected to a base (69) of said vapor plasma burner (6), wherein a preferably insulating protective cap (23) is disposed in the area of the exit opening (22) of said nozzle (21), said protective cap (23) being detachable via a spring element (66) and being rotationally secured to said base (69) of said vapor plasma burner (6), and said protective cap (23) has at its front a recess (24) corresponding to said nozzle (21) into which said nozzle (21) may be inserted, and in that said nozzle (21) may be detached from or secured to said base (69) without the use of auxiliary means by displacing said protective cap (23).

2. :

A device according to claim 1, wherein said nozzle (21) is detachable from said vapor plasma burner (6) by a twisting movement by said protective cap (23).

3. :

A device according to claim 1, wherein after detaching said nozzle (21) said protective cap (23) still remains on said burner (6) and is displaceable.

4. :

A device according to claim 1, wherein said protective cap (23) is secured to said vapor plasma burner (6) and remains thereon when said nozzle (21) is exchanged.

5. :

A device according to claim 1, wherein said nozzle (21) may be secured to said vapor plasma burner (6) by a twisting movement by said protective cap (23), and said protective cap (23) may be simultaneously secured to said base (69) via said nozzle (21).

6. :

A device according to claim 2, wherein said twisting movement may be effected by the user of said vapor plasma burner (6) using only one hand.

7. :

A device according to claim 2, wherein said nozzle (21) is detached from said protective cap (23), i.e. thrown out of the recess (24) of said protective cap (23), by a supportive, jerky backwards movement of said protective cap (23) after said nozzle (21) has been detached from said base (69) by said twisting movement by said protective cap (23).

8. :

A device according to claim 1, wherein said spring element (66) positions said protective cap (23) on said base (69) in such a way as to allow reception of said nozzle (21).

9. :

A device according to claim 1, wherein said recess (24) of said protective cap (23) is of such a shape, e.g. hexagonal, that said nozzle (21) may be driven along without being distorted.

10. :

A nozzle for a vapor plasma burner (6), comprising a preferably conical area (26) having an exit opening (22), a recess (37) connected to said exit opening (22), and a mounting area (33) for attachment to burner (6), particularly via an external thread (34) also providing current transfer to said nozzle (21), wherein a driver area (30) is arranged between said mounting area (33) and said preferably conical area (26), said driver area (30) being of such a shape that said nozzle (21) is received positively and distortion-proof in a protective cap (23) of said plasma vapor burner (6) to secure said nozzle (21) to said vapor plasma burner (6).

11. :

A nozzle according to claim 10, wherein said driver area (30) is hexagonal in shape and preferably has a projection (29) adjacent to said preferably conical area (26).

12. :

A nozzle according to claim 10, wherein said driver area (30) is octagonal in shape and preferably has a projection (29) adjacent to said preferably conical area (26).

13. :

A nozzle according to claim 10, wherein said mounting area (33) has a sealing ring (36) to keep gas (19) from leaking.

14. :

A nozzle according to claim 10, wherein an eccentric ring (31) is provided between said driver area (30) and said sealing ring (36).

15. :

A nozzle according to claim 10, wherein said nozzle (21) is configured for use with the device for exchanging a nozzle (21) of a vapor plasma burner (6).

16. :

A guard ring for a vapor plasma burner (6) protecting the vapor plasma burner (6) components from thermal influences and insulating current-carrying components, wherein at least one mounting device (59) for detachable mounting on a protective cap (23) is arranged on a front surface (58), and a recess (56) is provided which is configured to receive and envelop a nozzle (21) during mounting.

17. :

A guard ring according to claim 16, wherein at least one elevation (57) is provided on its inside.

18. :

A guard ring according to claim 16, wherein two elevations (57) are provided.

19. :

A guard ring according to claim 16, wherein particularly two mounting devices (59) are provided.

20. :

A guard ring according to claim 16, wherein recesses (47) are provided to receive said mounting devices (59).

21. :

A guard ring according to claim 20, wherein said mounting devices (59) snap into said recesses (47) of said protective cap (23) by a twisting movement.

22. :

A guard ring according to claim 16, wherein a groove or cavity (61) is provided on its outside (60) for mounting a spacer (42).