Infrared radiator and method of assembling same

Patent metadata

Field	Value
Publication number	US-11359809-B2
Application number	US-201816609033-A
Country	US
Kind code	B2
Filing date	Feb 19, 2018
Priority date	Apr 28, 2017
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

An infrared radiator for the heat treatment of a material web has an incandescent body with a flow-receiving surface that is subjected to a flow of a gas-air mixture supplied to the infrared radiator and heated by combustion of the gas-air mixture. The incandescent body is manufactured as a sheet material formed of a multiplicity of threads and connecting elements that at least indirectly connect the threads to one another. The connecting elements at least partially engage around the threads and thus connect them at least indirectly to one another. The connecting elements are configured in such a way that they may be detached from the connection with the threads, preferably by hand, while breaking up the sheet material.

First claim

The invention claimed is:

1. An infrared radiator for the heat treatment of a material web, the infrared radiator comprising:
an incandescent body having a flow-receiving surface disposed to be impinged by a gas-air mixture supplied to the infrared radiator and to be heated by a combustion of the gas-air mixture;
said incandescent body being manufactured as a sheet material selected from the group consisting of a spiral braid and a woven sheet material formed of a multiplicity of threads and connecting elements that, at least indirectly, connect said threads to one another;
said connecting elements at least partially engaging around said threads and connecting said treads to one another at least indirectly;
said connecting elements being configured to enable a connection of said connecting elements with said threads to be detached while breaking up said sheet material;
said threads and said connecting elements of said spiral braid being substantially identical spirals; and
said threads of said woven sheet material following an undulating outer contour while said connecting elements follow a substantially straight line.

2. The infrared radiator according to claim 1 , wherein said connecting elements and said threads are detachable by hand for manually breaking up said sheet material.

3. The infrared radiator according to claim 1 , wherein said connecting elements are configured to enable a reconnection thereof with said threads to thereby form the sheet material.

4. The infrared radiator according to claim 1 , wherein at least one of said connecting elements or said threads is configured so that neither said connecting elements nor said threads are destroyed when said sheet material is either broken up or manufactured.

5. The infrared radiator according to claim 1 , wherein said connecting elements are configured to hold said threads together in a loss-proof manner.

6. The infrared radiator according to claim 1 , wherein individual said threads are configured for detachment from a connection between said threads by a longitudinal and/or rotary movement along a longitudinal axis thereof.

7. The infrared radiator according to claim 1 , wherein said connecting elements are formed as threads, and both said connecting elements and said threads are formed spirally, thus defining the sheet material as a spiral braid, respectively such that a connecting element connects two directly adjacent threads to one another by engaging said directly adjacent threads into each other.

8. The infrared radiator according to claim 7 , wherein said connecting elements are formed as threads having an identical outer contour to the threads that connect them.

9. The infrared radiator according to claim 1 , wherein:
said sheet material is a woven fabric comprising threads serving as warp threads that are interwoven with threads serving as weft threads;
said connecting elements are threads being either warp threads or weft threads and said connecting elements are arranged respectively between two identical threads in the form of warp threads or weft threads; and
said threads have a wave-shaped outer contour and said connecting elements have a rectilinear outer contour.

10. The infrared radiator according to claim 9 , wherein the woven fabric is constructed in the manner of a plain weave, so that the directly adjacent threads that serve as weft threads weave alternately through the threads serving as warp threads, along different weaving paths.

11. The infrared radiator according to claim 1 , wherein at least one of said threads or said connecting elements are made of a comparatively flexurally rigid material.

12. The infrared radiator according to claim 11 , wherein said threads and/or said connecting elements are made of ceramic material.

13. The infrared radiator according to claim 1 , wherein said flow-receiving surface is at least one delimiting side of said incandescent body.

14. The infrared radiator according to claim 1 , wherein said infrared radiator has a burner plate and said incandescent body is arranged behind said burner plate in a flow direction of the gas-air mixture.

15. The infrared radiator according to claim 14 , wherein said incandescent body directly adjoins said burner plate viewed in the flow direction of the gas-air mixture.

16. The infrared radiator according to claim 1 , wherein said incandescent body is formed of a plurality of layers of said sheet material arranged on top of one another.

17. The infrared radiator according to claim 1 , wherein at least one of said threads or said connecting elements are individually manufactured.

18. The infrared radiator according to claim 17 , wherein said at least one of said threads or said connecting elements are manufactured by primary forming.

19. A method of assembling the infrared radiator according to claim 1 , the method comprising the following steps:
a) providing individual threads and connecting elements;
b) at least indirectly connecting individual threads to one another with at least one connecting element in such a way that two directly adjacent threads are detachably interconnected directly or indirectly by engaging the connecting element in the threads to produce a sheet material.

20. The method according to claim 19 , which comprises connecting the threads and the connecting element so that the sheet material may be disassembled by disconnecting the threads and the connecting element by hand.

Assignees

• Voith Patent Gmbh

Inventors

• Paniagua Juan
• Hoeckelmann Dirk

Classifications

• F23D99/004

  for use in particular heating operations · CPC title

• F23D2213/00

  Burner manufacture specifications · CPC title

• F23D14/149

  with wires, threads or gauzes as radiation intensifying means · CPC title

• F23D14/145

  combustion being stabilised at a screen or a perforated plate · CPC title

• F23D14/14

  using screens or perforated plates · CPC title