High pressure combustor with hot surface ignition

A combustor comprising:

• a longitudinally extending housing comprising a portion forming a main combustion chamber;
• an injector body located concentrically within the housing and including an initial combustion chamber;
• insulation lining the initial combustion chamber;
• an air/fuel premix injector in communication with the initial combustion chamber;
• at least one glow plug configured and arranged to cause ignition of an air/fuel mixture in the initial combustion chamber;
• an annular fuel injector plate comprising a central opening aligned with the air/fuel premix injector, the annular fuel injector plate configured to dispense fuel into the main combustion chamber and coupled within the injector body at a longitudinal distance from an outlet of the air/fuel premix injector;
• a burner comprising an annular swirl plate having a central opening aligned with the air/fuel premix injector and comprising a plurality of circumferentially spaced angled passages therethrough, the burner configured to dispense air from between the housing and the injector body into the main combustion chamber for ignition of fuel dispensed by the annular fuel injection plate into the main combustion chamber by combustion of the air/fuel premix in the initial combustion chamber;
• and
• a generally tubular jet extender extending longitudinally from the central opening of the fuel injector plate through the central opening of the swirl plate into the main combustion chamber;
• wherein the jet extender separates premix air/fuel flow from air/fuel flow used in the main combustion chamber.

A combustor comprising:

• a longitudinally extending housing comprising a main combustion chamber;
• an injector body including an initial combustion chamber secured within and spaced from an interior of the housing
• insulation lining the initial combustion chamber;
• an air/fuel premix injector assembly within the injector body comprising a premix chamber in communication with a fuel inlet tube and with a premix air inlet, the premix chamber including a first portion of a generally cylindrical shape in communication with the fuel inlet tube and the premix air inlet, and an air\fuel premix injector in communication with the premix chamber extending into and surrounded by the initial combustion chamber configured and arranged to dispense an air/fuel mixture into the initial combustion chamber, a second portion of the premix chamber of a generally funnel shape extending from the first portion in communication with the air\fuel premix injector;
• at least one glow plug located and configured to cause ignition of an air/fuel mixture in the initial combustion chamber;
• an annular fuel injector plate secured to an interior of the injector body a longitudinal distance from an outlet of the air/fuel premix injector assembly, the fuel injector plate positioned to dispense fuel into the initial combustion chamber and configured to dispense fuel into the main combustion chamber;
• a swirl plate burner coupled around an outer surface of the injector body and extending to the interior of the housing, the swirl plate burner configured to dispense a flow of air from between the injector body and the housing to form a vortex within the main combustion chamber for ignition of the fuel dispensed by the fuel injector plate into the main combustion chamber by combustion of the air/fuel mixture in the initial combustion chamber;
• and
• a generally tubular jet extender secured to an interior of the fuel injector plate and extending longitudinally into the main combustion chamber, wherein the jet extender separates premix air/fuel flow from air/fuel flow used in the main combustion chamber.