Patent ID: 6253538
Filing Date: 2001-07-03
Classification: F23R

Abstract:
A continuous combustion device comprising an elongated combustion chamber having an outer wall, means defining an air passage co-extensive with at least the combustion chamber outer wall, at least one fuel/air premix device for mixing fuel with a portion of air introduced from the air passage through a conduit between the air passage and the premix device, a fuel injector for feeding the premixed fuel/air mixture into the combustion chamber, a primary combustion zone defined within a section of the combustion chamber near the fuel injector, a secondary combustion zone defined adjacent the primary zone, first air inlets in the outer wall in the area of the primary zone, second air inlets in the outer wall in the area of the secondary zone, baffle means for distributing an airflow to the respective premix device, the primary and secondary combustion zones slidably mounted in a joint area of the air passage and the conduit and the joint area being between the primary zone and the secondary zone, the baffle means being slidable between a first position where air passes relatively unimpeded through the first air inlets to the primary zone, through the second inlets to the secondary zone and through the conduit to the premix device respectively, and a second position where a larger portion of the air is deflected to the secondary zone and less to the primary zone and the premix device, whereby a total amount of air entering the primary combustion zone both directly and through the premix device is in substantially stoichiometric proportion to fuel fed into the combustion chamber.