BURNER

摘要

A burner includes a tube, which includes a pre-mixing chamber that generates an air-fuel mixture containing fuel and a combustion chamber that burns the fuel. A first pipe supplies fuel, which is heated by an electric heater to the pre-mixing chamber. A second pipe includes a heat exchange unit that converts combustion heat of the fuel to vaporization heat of the fuel and supplies fuel heated by the heat exchange unit to the pre-mixing chamber. The second pipe is branched from the first pipe at a branched point, and the electric heater and the heat exchange unit are connected in parallel to the pre-mixing chamber.

主权项

1. A burner comprising:
a combustion unit that burns fuel; a first supply unit that includes an electric heater, which heats fuel to be supplied to the combustion unit and supplies the fuel heated by the electric heater to the combustion unit, a second supply unit that includes a heat exchange unit, which converts heat of the combustion unit to vaporization heat of the fuel, wherein the second supply unit supplies the fuel heated by the heat exchange unit to the combustion unit; and a controller that controls driving of the first supply unit and driving of the second supply unit, wherein the electric heater and the heat exchange unit are connected in parallel to the combustion unit, wherein the controller includes a temperature acquisition portion that acquires a temperature of the heat exchange unit, and a memory that stores vaporization amount data that specifies a maximum value of a fuel amount vaporizable in the heat exchange unit in correspondence with the temperature of the heat exchange unit, wherein when the maximum value corresponding to the acquired temperature is greater than or equal to a fuel amount supplied to the combustion unit, the controller is configured to stop heating with the electric heater and to supply fuel with the second supply unit, when the maximum value corresponding to the acquired temperature is smaller than the fuel amount supplied to the combustion unit, the controller is configured to supply fuel with the second supply unit and supply fuel with the first supply unit.