High-stability burners

Abstract

Burners for gas boilers are provided. Such burners include those having a diffuser, suitable for diffusing pre-mixed fuel gases in a combustion chamber, the diffuser having a wall provided with a plurality of diffusion openings; and a distributor, suitable for distributing the combustion gases towards the diffuser, the distributer having a wall provided with a plurality of distribution openings; wherein the diffusion openings are positioned at a diffuser portion and the distribution openings are positioned at a distributor portion, in which the diffuser portion and the distributor portion are laterally offset to each other relative to the direction of the fuel gas flow through said distribution openings and diffusion openings.

1 - 7 . (canceled) 
     
     
         8 . A burner for a gas boiler comprising:
 a diffuser suitable for diffusing pre-mixed fuel gases into a combustion chamber, said diffuser comprising a diffuser wall provided with a plurality of diffusion openings formed in a diffuser portion of said diffuser wall; and   a distributor suitable for distributing the fuel gases towards the diffuser, said distributor comprising a distributor wall provided with a plurality of distribution openings formed in a distributor portion of said distributor wall;   
       wherein said distributor portion and said diffuser portions being configured such that, in an operating position, the diffuser portion on which the diffusion openings are positioned and the distributor portion on which the distribution openings are positioned are laterally offset to each other relative to the direction of the fuel gas flow through said distribution openings and diffusion openings. 
     
     
         9 . The burner of  claim 8 , wherein said portion in which the diffusion openings are positioned corresponds to a central portion of the diffuser. 
     
     
         10 . The burner of  claim 8 , wherein said distributor portion in which the distribution openings are positioned corresponds to a peripheral portion of the distributor. 
     
     
         11 . The burner of  claim 10 , wherein the burner is of a flat type and said peripheral portion of the distributor comprises a portion at at least one of the perimeter edges of the distributor. 
     
     
         12 . The burner of  claim 10 , wherein the burner is of a three-dimensional type and said peripheral portion of the distributor comprises a portion at at least one of the upper edge and the lower edge of the distributor. 
     
     
         13 . The burner of  claim 8 , wherein said diffuser comprises a mesh comprising metal or ceramic fibers. 
     
     
         14 . The burner of  claim 8 , wherein said distributor comprises a wire net. 
     
     
         15 . The burner of  claim 8 , wherein said diffusion openings are overlapping with a region of the distributer wall having no distribution openings, and said distributor openings are overlapping with a region of the diffuser wall having no diffuser openings.