초록 ▼

In a method of suppressing or controlling thermoacoustic vibrations which develop in a combustion system having a burner working in a combustion chamber due to the formation of coherent or vortex structures and a periodic heat release associated therewith, in which method the vibrations are detected

In a method of suppressing or controlling thermoacoustic vibrations which develop in a combustion system having a burner working in a combustion chamber due to the formation of coherent or vortex structures and a periodic heat release associated therewith, in which method the vibrations are detected in a closed control loop and acoustic vibrations of a certain amplitude and phase are generated as a function of the detected vibrations and induced in the combustion system, improved suppression is achieved in that, within the control loop, the amplitude of the generated acoustic vibrations is selected to be proportional to the amplitude of the detected vibrations.

대표청구항 ▼

1. A method of suppressing or controlling thermoacoustic vibrations which develop in a combustion system having a burner working in a combustion chamber due to a formation of coherent or vortex structures and a periodic heat release associated therewith, the method comprising the steps of:detecting

1. A method of suppressing or controlling thermoacoustic vibrations which develop in a combustion system having a burner working in a combustion chamber due to a formation of coherent or vortex structures and a periodic heat release associated therewith, the method comprising the steps of:detecting vibrations in a closed control loop; generating and inducing acoustic vibrations of an amplitude and phase in the combustion system as a function of the detected vibrations; wherein the amplitude of the generated acoustic vibrations is selected to be proportional to the amplitude of the detected vibrations, and wherein the step of generating and inducing acoustic vibrations comprises generating and inducing acoustic vibrations with a power which is smaller than the thermal output of the combustion system.