| 摘要 |
PURPOSE: To prevent a heat reservoir or a duct from being clogged by the metal of low melting point by providing a combustion exhaust gas suction port at the position higher than the flow of the combustion exhaust gas from a burner, and setting the ratio of the volume of the combustion exhaust gas calculated from the volume of air for combustion to be supplied to the heat reservoir to the flow rate of the combustion exhaust gas passing through the heat reservoir to be not greater than the preset value. CONSTITUTION: The gas of the metal of low melting point to be generated by melting the burned ash is sealed with the combustion gas to be generated by the combustion of a heat storage type burner 8, and an suction port 9 of the combustion exhaust gas to preheat the air for combustion is provided at the position higher than the flow of the combustion gas to be generated by the burner 8. The opening of an exhaust gas damper 18 provided in a flue 16 is adjusted so that the ratio A=QG/Q of the combustion exhaust gas (Q) calculated from the volume (QA) of air for combustion to be measured by an air volume meter 14 to the passing exhaust gas volume (QG) passing through a heat reservoir 5(7) to be measured by an exhaust gas flow meter 15 is not greater than the preset value. The heat reservoirs 5, 7 and a duct can be prevented from being clogged by the metal of low melting point. |
