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A heating apparatus includes at least a pair of regenerative burner units having a fuel injection nozzle and a heat regenerator provided for a combustion air supply path. One regenerative burner unit is supplied with fuel through a fuel shut-off valve and a fuel change-over valve, and supplied with

A heating apparatus includes at least a pair of regenerative burner units having a fuel injection nozzle and a heat regenerator provided for a combustion air supply path. One regenerative burner unit is supplied with fuel through a fuel shut-off valve and a fuel change-over valve, and supplied with combustion air through a supply and exhaust change-over valve to perform combustion operation. The other regenerative burner unit 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.

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A regenerative burner unit for use in a regenerative heating apparatus, comprising: a cylindrical housing; a combustion cylinder concentrically mounted within the cylindrical housing in radially space relationship relative to the cylindrical housing, the combustion cylinder having a peripheral wall

A regenerative burner unit for use in a regenerative heating apparatus, comprising: a cylindrical housing; a combustion cylinder concentrically mounted within the cylindrical housing in radially space relationship relative to the cylindrical housing, the combustion cylinder having a peripheral wall and a plurality of holes distributed in the peripheral wall; a main burner extending along a central axis of the combustion cylinder and having a fuel injection nozzle opened in an area of a rear portion of the combustion cylinder; and at least one heat regenerator provided in a combustion air supply path defined between the main burner and the cylindrical housing, the heat regenerator comprising a plurality of segments. A method of operating a heating apparatus comprising at least a pair of regenerative burner units having each a fuel injection nozzle and a heat regenerator located in a combustion supply path; and means for alternatingly causing one of the regenerative burner units to perform a combustion operation and another of the regenerative burner units to perform a regenerating operation; which causing means includes means for alternatively supplying fuel to the one and another regenerative burner units and including a fuel shut-off valve and a fuel change-over valve, and means for alternatively supplying combustion air to the one and another regenerative burner units and including a supply and exhaust change-over valve, the method comprising the steps of: measuring a temperature of the combustion waste gas; and effecting at least one of closing the fuel shut-off valve and carrying out change-over in both the fuel change-over valve in accordance with the measured temperature to reverse an operational mode of the regenerative burner units.