Combustion apparatus

摘要

A combustion apparatus comprising a furnace (21) having a rectangular transverse cross section and a plurality of burners (25a,25b,25c), which are disposed on one pair of opposed walls (22,23) of the furnace so that an injection direction axis line (28) or an extension line thereof of either or both of fuel and combustion air injected from the burner is tangent to an imaginary circle set (26) in the furnace, and in which at least two or more imaginary circles having different center positions are set in the furnace, characterized in that at least one or more of the burners (25d) are disposed on the other pair of opposed walls (24) of the furnace.