COMBUSTION APPARATUS AND ITS COMBUSTION CONTROL METHOD

摘要

In a combustion apparatus having a structure which includes a combustion furnace portion (1), a free board portion (2) continuing from the combustion furnace portion (1) and a post-combustion chamber (3) continuing from the free board portion (2) and wherein the post-combustion chamber (3) is disposed deviated from the position immediately above the free board portion (2), the combustion apparatus of this invention includes a plurality of pipes (4-2) disposed in parallel with a predetermined gap between them and near the boundary between the free board portion (2) and the post-combustion chamber (3) and gas blow means (4) equipped with gas jet holes (4-3) for blowing a gas such as air in a direction opposite to a combustion gas flowing to a discharge port, in each of the pipes (4-2). According to this structure, the gas blow means (4) blows the gas in such a manner as to counter the combustion gas so that a great swirl flow consisting of the mixture of the combustion gas and the blown gas occurs at the free board portion (2), an unburnt gas and the combustion air are mixed sufficiently inside the free board portion (2) and complete combustion is accomplished.