Patent ID: 6113384
Filing Date: 2000-09-05
Classification: F23D,F23N

Abstract:
A method for controlling a combustion system, comprising the steps of:providing a combustion chamber, a fan connected to the combustion chamber and having a spin velocity, a burner adjacent the combustion chamber, one or more flame openings defined by the burner, each flame opening having a cross section, an obstacle associated with each of the one or more flame openings, each obstacle being within the combustion chamber, a mixture having a mixture temperature discharged at a discharge velocity from the one or more flame openings and a flame along the burner substantially detached from the one or more flame openings;sensing a position of the flame;generating a flame position signal based on the sensed position;controlling a characteristic variable quantity of the mixture based on the flame position signal;wherein the characteristic variable quantity is selected from the group consisting of(i) a premixture rate value of the mixture,(ii) the discharge velocity, and(iii) the mixture temperature upstream of the flame;controlling a Premixture rate value of the mixture and the discharge velocity by varying the cross section of at least one of the flame openings and the spin velocity of the fan; andmaintaining the flame around a prefixed optimum position.