Patent Number: 6,253,538

Title: Variable premix-lean burn combustor

Abstract: A method and device are provided to enable optimizing combustion conditions of a continuous combustion device to produce low emissions of nitric oxide, carbon monoxide and hydrocarbons at all operative conditions. The continuous combustion device includes a slidable baffle to regulate, according to power levels, not only an airflow directly into a primary combustion zone and a secondary combustion zone but also an airflow into a fuel/air premix device to maintain the fuel/air ratio in the primary combustion zone optimized both at an average level and in local areas. Such that, low objectionate or harmful emissions can be reached without performance penalties of the combustion device, such as anti-ignition, flashback or flameout.

Inventors: Sampath; Parthasarathy (Mississauga, CA), Davenport; Nigel Caldwell (Hillsburgh, CA)

Assignee: Pratt & Whitney Canada Corp.

International Classification: F23R 3/28 (20060101); F23R 3/02 (20060101); F23R 3/26 (20060101); F23R 003/22 (); F23R 003/30 ()

Expiration Date: 07/03/2018