Abstract: In a method of minimizing thermoacoustic vibrations in gas-turbine combustion chambers, a modulated spraying of liquid or gaseous premix fuel into a premix burner is carried out. The premix fuel is fed by means of two fuel lines (13, 14), and the modulation of the quantity of fed fuel is effected in each case by one fuel valve per fuel line.

Abstract: A burner for generating a hot gas including at least two hollow partial bodies stacked inside each other in a downstream air flow direction. The center axes of the hollow bodies extend offset to each other such that burner slits formed by adjoining walls of the partial bodies form tangential air inlet channels for an inflow of combustion air into an inside chamber defined by the partial bodies. The hollow bodies are provided with a plurality of baffles projecting into the downstream air flow. The plurality of baffles add an axial turbulence force to the air flow.

Abstract: A burner for operating a unit for generating a hot gas consists essentially of at least two hollow partial bodies (1, 2) which are interleaved in the flow direction and whose center lines extend offset relative to one another in such a way that adjacent walls of the partial bodies (1,2) form tangential air inlet ducts (5, 6) for the inlet flow of combustion air (7) into an internal space (8) prescribed by the partial bodies (1, 2). The burner has at least one fuel nozzle (11). In order to control flow instabilities in the burner, the inside of the burner outlet (17) has a plurality of nozzles (32) along the periphery of the burner outlet (17) for introducing axial vorticity into the flow, the nozzles (32) for injecting air (34) being arranged at an angle to the flow direction (30).