Metal burner membrane

Abstract

The invention relates to a gas burner comprising a metal burner membrane having a base section ( 201 ), a dosing section ( 203 ) and a transition region in between ( 202 ). The shape of the membrane is such that the smallest radius of curvature of the transition zone is smaller than the smallest radius of curvature of the base section. Furthermore the burner membrane uninterruptedly flows over from the base section through the transition region into the closing section. The advantages of such a gas bunner am amongst others a large dynamic power range, an improvadflame front and a low production cost.

1 . A gas burner, said burner comprising a metal burner membrane, said membrane comprising a base section having a smallest radius of curvature being R base  and a closing section, characterised in that said membrane being uninterrupted comprises a transition region for connecting said base section to said closing section, said transition region having a smallest radius of curvature r transition  being larger than zero and being smaller or equal to said R base .  
   
   
       2 . A gas burner as in  claim 1 , wherein said membrane comprises a fabric comprising stainless steel fibres.  
   
   
       3 . A gas burner as in  claim 2 , wherein said stainless steel fibres are arranged essentially parallel into bundles.  
   
   
       4 . A gas burner as in  claim 3 , wherein said bundles are knitted or braided or woven.  
   
   
       5 . A gas burner as in  claim 1 , wherein said membrane comprises a foraminated plate or sheet.  
   
   
       6 . A gas burner as in  claim 1 , wherein said burner membrane comprises a foraminated plate, said transition region is at the outside disposed with stainless steel fibres.  
   
   
       7 . A gas burner as in  claim 6 , wherein said base section and said closing section are at least partially disposed with stainless steel fibres.  
   
   
       8 . A gas burner as in  claim 6 , wherein said stainless steel fibres are arranged essentially parallel into bundles.  
   
   
       9 . A gas burner as in  claim 8 , wherein said bundles are knitted or braided or woven.  
   
   
       10 . A gas burner as in  claim 1 , wherein said base section has a frustoconical shape.  
   
   
       11 . A gas burner as in  claim 1 , wherein said base section has a cylindrical shape.  
   
   
       12 . A gas burner as in  claim 10  wherein said transition region is part of a torus surface delimited by two planes perpendicular to the axis of symmetry of said torus.  
   
   
       13 . A gas burner as in  claim 1 , wherein said base section has a polygonal cross section, the corners of said cross section being rounded.  
   
   
       14 . A gas burner as in  claim 1 , wherein said base section has a rectangular cross section, the corners of said cross section being rounded.  
   
   
       15 . A gas burner as in  claim 1 , wherein said base section is a truncated pyramid, said pyramid having rounded edges