| 摘要 |
PROBLEM TO BE SOLVED: To provide a combustion device capable of suppressing dew condensation near an air supply/exhaust top even in a single operation to operate only one of two burners.SOLUTION: In a combustion device including a first burner 1 and a second burner 12, and a first combustion blower 5 for supplying combustion air to the first burner 1 and a second combustion blower 16 for supplying combustion air to the second burner 12, and implementing a simultaneous operation by the first burner 1 and the second burner 12, or a single operation by one of them, as a rotational frequency of the combustion blower at a non-operated burner side is determined by fire power at an operated burner side in the single operation at one side, inflow of a combustion gas to the non-operated burner can be prevented, and an exhaust temperature of the combustion gas is kept at a proper temperature causing little dew condensation, thus generation of dew condensation of water vapor in an exhaust gas can be reduced even when the temperature of the exhaust gas near a supply/exhaust top is lowered.SELECTED DRAWING: Figure 2 |
