Premixing chamber for operating an internal combustion engine, a combustion chamber of a gas turbine group or a firing system

摘要

In a premixing burner for the operation of an internal combustion engine, a combustion chamber of a gas turbine group or a firing system, which burner can be used for the combustion of fuels with very different properties, a diffuser (4) is arranged after a swirl generator (1), a convergent part (2) and a throat (3) for the supply of the fuel (9). The convergent part (2), the throat (3) and the diffuser (4) have a rotationally symmetrical configuration and the variation in cross section is adapted in such a way that no flow separation is possible at the wall. Gaseous fuels having a high flame speed are introduced counter to the swirl generated by the swirl generator (1). Gaseous fuels having a low flame speed are introduced in the same direction as the swirl generated by the swirl generator (1).