Gas burner with refractory material mounted grill - has precombustion chamber below grill with conical perforations to eliminate expansion changes

摘要

The burner has a base (1) made from refractory material. The base has a hollow interior and a hole through the base. The air gas mixture is supplied to the burner through the hole in the base. The gas and air are supplied through a double tube. A perforated plate aids mixing at the top end of the supply pipe. The combustion grille (4) has conical perforations to eliminate the effects of expansion and viscosity of the combustion gas. The pre-combustion chamber is located below the combustion grille. Secondary combustion air is admitted through the pipe (8).