Heating apparatus including plurality of regenerative burners

摘要

A heating apparatus includes at least a pair of regenerative burner units (55,55') having a fuel injection nozzle and a heat regenerator provided for a combustion air supply path. One regenerative burner unit (55) is supplied with fuel through a fuel shut-off valve (65) and a fuel change-over valve (63), and supplied with combustion air through a supply and exhaust change-over valve (57) to perform combustion operation. The other regenerative burner unit (55') performs heat regenerating operation by passing a combustion waste gas. Operations of the fuel shut-off valve, the fuel change-over valve and the supply and exhaust change-over valve are controlled depending upon an operation parameter of the heating apparatus.