Atmospheric gas burner with sequential and superminimum device

Abstract

Atmospheric gas burner, for use in oven cooking chambers, and comprising an hollow and prolonged body provided with a first portion able of lodging a main burner and a second portion able of lodging a secondary burner (mini-burner) said two portions being hermetically separated by a wall placed inside said hollow body; on the outer surface of said hollow body a third assembly of cross-lighting ports is placed, wherein said cross-lighting ports extend in correspondence both of said first portion and on said second portion, and preferably are alined each other, a deflecting element is placed outside said hollow prolonged body, which is close and in front of said cross-lighting ports, an is also able of allowing the flame propagation among said cross-lighting holes, and between a fraction of these and said secondary holes. Said deflecting element is placed and extended in such a way not to cover either said main holes and said secondary holes

1 . Atmospheric gas burner, particularly for the use in the cooking chambers of household or commercial (catering) cooking ovens, and comprising at least an hollow and prolonged body, characterized in to that said hollow prolonged body comprises a first portion able of lodging a main burner ( 1 ) and a second portion able of lodging a secondary burner (mini-burner) ( 6 ), said two portions being hermetically separated by a wall ( 8 ) placed inside said hollow body. 
   
   
       2 . Atmospheric gas burner according to  claim 1 , characterized in that on the outer surface of said hollow body
 a first assembly with main holes ( 3 ), associated to said first portion, said main holes being able of allowing the emission of respective gas jets related to said main burner ( 1 ), and   a second assembly with secondary holes ( 4 ), associated to said second portion, said secondary holes being able of allowing the emission of respective gas jets related to said secondary burner ( 6 ), are placed.   
   
   
       3 . Atmospheric gas burner according to  claim 1 , characterized in that said main and secondary burners ( 1 ,  6 ) are associated, on their opposite sides of said hollow prolonged body,
 to two respective mixing chambers ( 2 ,  13 ) able of supply with two respective gas flows,   respective Venturi ducts ( 10 ,  7 ), which penetrate into said respectively main burner ( 1 ) and said secondary burner ( 6 ).   
   
   
       4 . Atmospheric gas burner according to  claim 3 , characterized in that said Venturi duct ( 7 ), associated to said secondary burner ( 6 ), is implemented through a conduit which is substantially outside of said hollow prolonged body. 
   
   
       5 . Atmospheric gas burner according  claim 2 , characterized in that:
 said main holes ( 3 ) are placed successively along two straight lines which stretch parallel each other on two opposite sides of said first portion,   said secondary holes ( 4 ) are placed successively along two straight lines which stretch parallel each other on two opposite sides of said second portion.   
   
   
       6 . Atmospheric burner according to  claim 1 , characterized in that
 on the outer surface of said hollow body a third assembly of cross-lighting ports ( 11 ) is placed,   said cross-lighting ports extend in correspondence both of said first portion and on said second portion, and preferably are lined each other,   a deflecting element ( 12 ) is placed outside said hollow prolonged body, and which is close and in front of said cross-lighting ports,   a gap is implemented between said deflecting element and the surface of said prolonged hollow body, whose thickness is able of allowing the flame propagation among said cross-lighting holes, and between a fraction of these and said secondary holes ( 4 ).   
   
   
       7 . Atmospheric burner according to  claim 6 , characterized in that said deflector ( 12 ) is placed and extended in such a way not to cover either said main holes ( 3 ) and said secondary holes ( 4 ). 
   
   
       8 . Atmospheric burner according to  claim 1 , characterized in that it is provided with a temperature sensor ( 9 ) lodged inside said second portion. 
   
   
       9 . Cooking oven comprising a cooking chamber and a gas burner contained or associated to said cooking chamber, characterized in that said gas burner is carried out according to  claim 1 . 
   
   
       10 . Cooking oven according to  claim 9 , characterized in that it is provided with control means able of allowing the gas selectively and independently flowing both to the main burner ( 1 ) and to the secondary burner (mini-burner) ( 6 ).