초록 ▼

A continuous combustion device of the type having a combustion chamber and an outer casing forming with it an annular air delivery passage for distributing a continuous supply of compressed air into the combustion chamber, and a fuel injector at one end of the combustion chamber. The combustion cham

A continuous combustion device of the type having a combustion chamber and an outer casing forming with it an annular air delivery passage for distributing a continuous supply of compressed air into the combustion chamber, and a fuel injector at one end of the combustion chamber. The combustion chamber has a pattern of holes connecting the air passage with primary and secondary combustion zones within it. The invention provides adjustable means for controlling the flow of delivery air in the annular passage to proportion the relative air distribution to the primary and secondary zones so as to reduce polluting emissions under varying load conditions. Preferably, the hole pattern is designed to provide a lean primary zone fuel-air ratio at full power conditions and early quenching of the flame in the primary zone. The regulating device may take the form of adjustable baffle means and for proportioning the distribution of the flow of air in the annular passage.

대표청구항 ▼

In a continuous combustion device, a combustion chamber having a peripheral wall, means defining an air passage surrounding said combustion chamber, at least a fuel injector for feeding fuel into said combustion chamber, a primary combustion zone within said chamber defined around said fuel injector

In a continuous combustion device, a combustion chamber having a peripheral wall, means defining an air passage surrounding said combustion chamber, at least a fuel injector for feeding fuel into said combustion chamber, a primary combustion zone within said chamber defined around said fuel injector, at least a secondary combustion zone within said chamber defined adjacent said primary zone and downstream thereof, first air inlets in said peripheral wall in the area of said primary zone communicating with said air passage, second air inlets in said peripheral wall in the area of said secondary zone communicating with said air passage, a baffle provided in said air passage between the air inlets for said primary zone and the air inlets for said secondary zone, means for moving said baffle between a first position and a second position whereby in said first position air passes relatively unimpeded to both the primary zone and the secondary zone, and at the second position the baffle impedes the flow of air to said primary zone by deflecting a larger proportion of the air to the secondary combustion zone thereby modifying the characteristics and flow path of the primary zone and said secondary zone providing a richer fuel/air mixture in the primary zone to thereby reduce the relative carbon monoxide and hydrocarbon emissions from said combustion chamber.