Improved radiant burner

Abstract

A radiant burner comprises a body defining a premixing chamber and a combustion chamber. The premixing chamber is separated from the combustion chamber by at least one radiant burner plate ( 2 ) which has multiple levels of burner surface. The combustion chamber is further limited by a first radiant screen ( 4 ). The radiant burner further comprises a second radiant screen ( 3 ) in the combustion chamber. The second radiant screen is spaced from, but near and parallel to the radiant burner plate(s), such that this second radiant screen acts as an extended burner surface and also heats up said at least one radiant burner plate when in use.

1 . A radiant burner comprising a body defining a premixing chamber and a combustion chamber, said premixing chamber being separated from the combustion chamber by at least one radiant burner plate which has multiple levels of burner surface, said combustion chamber being further limited by a first radiant screen characterised in that said radiant burner further comprises a second radiant screen in said combustion chamber, said second radiant screen being spaced from, but near and parallel to said at least one radiant burner plate, such that said second radiant screen acts as an extended burner surface and also heats up said at least one radiant burner plate when in use. 
     
     
         2 . A radiant burner according to  claim 1 , wherein said second radiant screen is an arrangement of parallel spaced round rods or square bars. 
     
     
         3 . A radiant burner according to  claim 1 , wherein said first radiant screen is a metal grid or an arrangement of parallel spaced round rods or square bars. 
     
     
         4 . A radiant burner according to  claim 1 , wherein said at least one radiant burner plate is a ceramic burner plate. 
     
     
         5 . A radiant burner according to  claim 1 , wherein said at least one radiant burner plate has a height difference in between 2 levels of burner surface of 1 to 20 mm. 
     
     
         6 . A radiant burner according to  claim 1 , wherein said combustion chamber further comprises at least one further radiant screen.