| 摘要 |
PURPOSE:To minimize oxidation of nitrogen and to obtain a stable combustion of quick rising up by providing a Bunsen burner with both primary and secondary combustion functions and also reducing the temperature of flame. CONSTITUTION:The Bunsen burner comprises a suction port 2 for sacking fuel jetted from a gas nozzle and the surrounding air as a primary air, a mixing pipe 3, a mixture pressure equalizing part 4 and a primary flame port 5 with a plurality of slit-shaped flame holes. In the burner having the abovesaid constitution, a primary combustion chamber 6 into which the primary flame port 5 opens is constituted by two parts 7 and 8 which are coupled with each other by caulking a flange part 9 of the respective parts. At the top of the primary combustion chamber 8, there is provided a secondary flame port 10, so that the combustion gas produced by the primary combustion within the primary combustion chamber 6, which is carried out with less than a theoretical air amount, is secondarily burned under a supply of air in the surroundings of the secondary flame port 10 as a secondary air. |
