Patent ID: 7244119
Filing Date: 2007-07-17
Classification: F23C,F23D

Abstract:
1. A compact gas burner apparatus having a short flame length and a high turndown ratio for discharging a mixture of fuel gas and air into a furnace space wherein the mixture is burned and flue gases having low NO x content are formed therefrom comprising: a housing having an open end attached to said furnace space; means for introducing a controlled flow rate of said air into said housing attached thereto; a burner tile attached to the open end of said housing having an opening formed therein for allowing said air to flow therethrough and having a wall surrounding said opening which extends into said furnace space, the exterior sides of said wall being divided into sections by a plurality of radially positioned baffles attached thereto, wherein every other section is slanted at a first angle and a second angle towards said opening, wherein said first angle is greater than said second angle, and wherein each of said sections slanted at a first angle has a primary fuel gas passageway formed therein for conducting primary fuel gas and flue gases from outside said section to within said wall, said sections slanted at a second angle do not have a primary fuel gas passageway therein; and a plurality of fuel gas nozzles connected to a source of fuel gas and positioned outside each section of said wall of said burner tile, wherein fuel gas nozzles positioned adjacent to said sections slanted at a first angle discharge primary fuel gas into said primary fuel gas passageway and said fuel gas nozzles adjacent to said sections slanted at a first angle also discharge secondary fuel gas along said slanted sections whereby said secondary fuel gas mixes with flue gases in said furnace space.