Infrared radiator

Abstract

An infrared radiator for the heat treatment of a material web includes an incandescent body with a flow-receiving surface to be impinged by a gas-air mixture that is supplied to the infrared radiator and to be heated by combustion of the gas-air mixture. The incandescent body is manufactured as a sheet material that is formed of a multiplicity of threads. The sheet material is manufactured by primary forming.

1 - 11 . (canceled) 
     
     
         12 . An infrared radiator for the heat treatment of a material web, the infrared radiator comprising:
 an incandescent body having a flow-receiving surface 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 formed of a multiplicity of threads and said sheet material being manufactured by primary forming.   
     
     
         13 . The infrared radiator according to  claim 12 , wherein said sheet material is a self-supporting sheet material. 
     
     
         14 . The infrared radiator according to  claim 12 , wherein said threads of said sheet material are interconnected in an articulated manner at respective intersection points. 
     
     
         15 . The infrared radiator according to  claim 12 , wherein said threads are formed spirally and said sheet material is a spiral braid with two directly adjacent threads respectively connected to one another in each case by meshing at intersection points. 
     
     
         16 . The infrared radiator according to  claim 12 , wherein said sheet material is a woven fabric, comprising threads that serve as warp threads and that are interwoven at intersection points with threads that serve as weft threads, and wherein said threads have a wave-shaped outer contour. 
     
     
         17 . The infrared radiator according to  claim 16 , wherein said woven fabric is a plain weave, with directly adjacent threads that serve as weft threads weaving alternately through threads that serve as warp threads, along different weaving paths. 
     
     
         18 . The infrared radiator according to  claim 12 , wherein said threads are made of a comparatively flexurally rigid material. 
     
     
         19 . The infrared radiator according to  claim 18 , wherein said threads are made of a ceramic. 
     
     
         20 . The infrared radiator according to  claim 12 , wherein said flow-receiving surface is at least one delimiting side of said incandescent body. 
     
     
         21 . The infrared radiator according to  claim 12 , further comprising a burner plate, and wherein said incandescent body is arranged behind said burner plate in a flow direction of the gas-air mixture. 
     
     
         22 . The infrared radiator according to  claim 21 , wherein said incandescent body directly adjoins said burner plate viewed in the flow direction of the gas-air mixture. 
     
     
         23 . The infrared radiator according to  claim 12 , wherein said incandescent body is manufactured from a plurality of layers of said sheet material arranged on top of one another.