Patent ID: 7913494

Claim:
A burner for a combustion chamber having a bottom surface, the burner comprising: a cylindrical mixing portion having first and second ends and an inner wall defining an interior, the cylindrical mixing portion configured and operative to mix an oxidizing agent and fuel in the interior thereof, the first end opening to the combustion chamber; a fuel spraying portion that sprays fuel in the cylindrical mixing portion, the fuel spraying portion being disposed on the second end of the cylindrical mixing portion; first blowing ports having an inner surface, the first blowing ports configured and operative to introduce the oxidizing agent to the mixing portion to form a swirling flow with the fuel, the first blowing ports being disposed to open to the inner wall of the cylindrical mixing portion; and second blowing ports configured and operative to introduce the oxidizing agent to the mixing portion and to form turbulence by making the oxidizing agent collide with said swirling flow, the second blowing ports opening in a direction different from the first blowing ports and being disposed further to the second end of the cylindrical mixing portion than the swirling flow, wherein the first blowing ports and the combustion chamber are adjacent each other with said bottom surface of said combustion chamber interposed between the first blowing ports and the combustion chamber, and the bottom surface of the combustion chamber forms a part of the inner surface of the first blowing ports.