Patent ID: 6220030
Filing Date: 2001-04-24
Classification: F02G

Abstract:
A burner for an external combustion engine, said burner comprising:an external housing;a shroud within the external housing, said shroud in use defining at least in part a centrally located combustion chamber;inlet air means from which inlet air is directed over an internal wall surface of the housing for cooling thereof;guide means for directing inlet air to the combustion chamber, said guide means directing the inlet air such that, in the use of the burner, the inlet air effects a cooling of the shroud prior to the inlet air entering the combustion chamber;heat exchange means whereby inlet air, after having applied a cooling effect to the housing, is heated before being directed to said shroud;fuel inlet means directing the fuel to the combustion chamber;an igniter for igniting the fuel; andgas exhaust means; whereinsaid external housing, the shroud, heat exchange means and the guide means define a series of nested passageways about the combustion chamber, said passageways being arranged to maximize the heat exchange between the exhaust gases and inlet air.