Burner with an extension of the venturi tube

Abstract

A burner ( 1 ), with natural or forced suction, comprising a burner body ( 2 ), into which a mixture of fuel and air is introduced, said body ( 2 ) being provided with openings ( 4 ) for the flow and subsequent combustion of said mixture and comprising a Venturi tube ( 3 ) into which a jet of said fuel is introduced under pressure and extension means ( 6 ) for said Venturi tube ( 3 ); said extension means ( 6 ) is removably coupled with said Venturi tube ( 3 ).

1 . Burner ( 1 ), with natural or forced suction, comprising a burner body ( 2 ), into which a mixture of fuel and air is introduced, said body ( 2 ) being provided with openings ( 4 ) for the flow and subsequent combustion of said mixture and comprising a Venturi tube ( 3 ) into which a jet of said fuel is introduced under pressure and extension means ( 6 ) for said Venturi tube ( 3 ), characterized in that said extension means ( 6 ) is removably coupled with said Venturi tube ( 3 ).  
     
     
         2 . Burner ( 1 ) according to  claim 1 , wherein said extension means ( 6 ) is coupled to said Venturi tube ( 3 ) by means of interference coupling, the measure of said interference being chosen so as to assure stability of the coupling and allow a removal even manual of said extension means ( 6 ).  
     
     
         3 . Burner ( 1 ) according to  claim 1 , wherein said extension means ( 6 ) is coupled to said Venturi tube ( 3 ) through fastening means ( 8 ,  9 ).  
     
     
         4 . Burner ( 1 ) according to  claim 3 , wherein said fastening means ( 8 ,  9 ) includes a protrusion ( 8 ) provided on the internal surface of said Venturi tube ( 3 ) and an open slot ( 9 ) provided at an end of said extension means ( 6 ).  
     
     
         5 . Burner ( 1 ) according to  claim 4 , wherein said open slot ( 9 ) includes a first portion ( 10 ) substantially rectilinear and substantially parallel to a longitudinal axis of said extension means ( 6 ).  
     
     
         6 . Burner ( 1 ) according to  claim 5 , wherein said open slot ( 9 ) includes a second portion ( 11 ) consecutive to said first portion ( 10 ) and forming an angle with it.  
     
     
         7 . Burner ( 1 ) according to  claim 6 , wherein said angle has an amplitude of about 90°.