| 摘要 |
PURPOSE:To widen the area of irradiation and improve the efficiency of irradiation as well as to widen the range of adjustment of volume of combustion by a method wherein an air hole projected upwardly is arranged in a combustion chamber. CONSTITUTION:In a combustion chamber A, a local eddy current is produced under an action of fed air flow near an air feeding part and at a part near the wall surfaces of an inner flame cylinder 2, outer flame cylinder 3 and a lower red heating cylinder 4, where the gasified gas and air are mixed, the central part makes a nearly layered flow and a high concentration of gasified gas is generated. Therefore, when the gas ascends up to the secondary combustion part, it may produce a dispersed combustion and a yellow flame. However, the gas flow ascending in a substantial laminated flow through the air port 7 promotes a mixing action with air and the gasified gas under a low eddy current produced by the projected part and at the same time air is supplied to the central part of the combustion chamber A having a high concentration of gasified gas. Thereby, a premixing rate of gasified gas and air is improved and a production of blue flame at the secondary combustion part is promoted. |
