Patent ID: 6776610
Filing Date: 2004-08-17
Classification: F23D,Y02E

Abstract:
A gas burner in which a burner head is placed in an inner pipe that is surrounded by and spaced inwardly of an outer protective pipe, wherein waste gases from the burner head pass along and through the inner pipe and then along and through the outer pipe and thereafter into a waste gas channel which leads to the surroundings, wherein fuel is delivered to the burner head through a fuel conduit positioned within the inner pipe, and wherein combustion air is delivered to the burner head through the space between the inner pipe and the outer pipe, said gas burner comprising: a fuel conduit positioned within the inner pipe and having a downstream end that terminates at a point spaced from the burner head and wherein said fuel conduit is provided with a plurality of holes to define a perforated part of said fuel conduit; a further pipe surrounding and spaced outwardly of at least the perforated part of said fuel conduit wherein a downstream end of the further pipe extends to the burner head and an upstream end of the further pipe is sealed against the fuel conduit to form a mixing chamber between an outer surface of the fuel conduit and an inner surface of the further pipe and wherein a second conduit is connected with a wall of the further pipe to conduct a given amount of air into the mixing chamber.