Patent ID: 6315551
Filing Date: 2001-11-13
Classification: F23D

Abstract:
A burner comprising:at least four substantially concentric ducts for feeding fuel and primary combustion air;said at least four ducts including an axial air duct, rotary air duct, a central primary air delivery duct, a peripheral duct positioned radially inside the axial air duct and the rotary air duct for receiving fuel which has at least one fuel outlet opening;said axial air duct, said rotary air duct, and said central primary air delivery duct comprising primary air feeds for said burner;said axial air duct and said rotary air duct being disposed radially outside said at least one fuel outlet;a central stabilizer placed at an outlet of said central primary air delivery duct;said central primary air delivery duct opening out through orifices in said central stabilizer;a tube placed in said central primary air delivery duct for receiving fuel;said central stabilizer extending radially relative to an opening of said tube placed in said central primary air delivery duct;at least one additional air feed opening out into said central stabilizer, said at least one additional air feed being placed around an outer edge of said central stabilizer and forming a fourth primary air feed.