Fuel combustion system

A fuel combustion system for burning a fuel mixture, the fuel combustion system comprising:

• at least one discharge nozzle and each discharge nozzle having a centrally located liquid fuel orifice and a concentric air orifice surrounding the liquid fuel orifice;
• a liquid fuel supply conduit being coupled to each liquid fuel orifice for supplying liquid fuel thereto from a fuel supply;
• an air supply conduit being coupled to each air orifice for supplying pressurized air thereto from a pressurized air source;
• the liquid fuel and the pressurized air only mixing with one another, upon being discharged from the respective liquid fuel and air orifices, to form a fuel mixture;
• a supplemental air fan for supplying supplement air to facilitate combustion of the fuel mixture;
• air deflector sleeve at least partially surrounding and accommodating the at least one discharge nozzle;
• a cylindrical blast tube surrounding the air deflector sleeve and an outlet end of the cylindrical blast tube supporting a flame retention head;
• the flame retention head redirecting the supplement air radially inward through a plurality of openings formed in at least one of the air deflector sleeve and a cylindrical surface of the flame retention head to assist with combustion of the fuel mixture;
• the air deflector being concentrically located within the blast tube and separating the pair of discharge nozzles from the blast tube, and the air deflector sleeve arranged so as to divert a minor portion of the supplemental air, from the supplemental air fan, to flow toward the pair of discharge nozzles while directing a remainder of the supplemental air to flow, between the air deflector and the blast tube, toward the flame retention head;
• an inlet end of the air deflector sleeve being located closely adjacent to a nozzle housing, which supports the at least one discharge nozzle, so as to form a gap therebetween which permits a minor portion of the supplemental air, supplied by the supplemental air fan, to flow therethrough and be supplied directly to the at least one discharge nozzle;
• an end face of the flame retention head being closed so as to prevent supplemental air from flowing therethrough, a plurality of holes are formed in a radially inward facing surface of the flame retention head, and the plurality of holes form a flow passage which permits supplemental air to flow into the furnace and assist with combustion:
• the outlet end of the air deflector sleeve being connected to the flame retention head so as to form a circumferential passageway therebetween which permits some of the supplemental air to flow therethrough into the furnace;
• and
• the air deflector sleeve comprising an inlet section which comprises a solid surface without any openings formed therein and an outlet section which has a plurality of apertures formed therein, and the plurality of apertures formed in the outlet section form flow paths for the supplemental air into an internal chamber, defined within the air deflector sleeve, which assist with shaping and combustion of the fuel mixture;
• wherein the plurality of apertures formed in the outlet section comprise between 15 and 100 apertures formed therein, and each one of the apertures in the outlet section is approximately a ¼+/−⅛ of an inch in diameter.

A fuel combustion system for burning a fuel mixture, the fuel combustion system comprising:

• at least one discharge nozzle and each discharge nozzle having a centrally located liquid fuel orifice and a concentric air orifice surrounding the liquid fuel orifice;
• a liquid fuel supply conduit being coupled to each liquid fuel orifice for supplying liquid fuel thereto from a fuel supply;
• an air supply conduit being coupled to each air orifice for supplying pressurized air thereto from a pressurized air source;
• the liquid fuel and the pressurized air only mixing with one another, upon being discharged from the respective liquid fuel and air orifices, to form a fuel mixture;
• a supplemental air fan for supplying supplement air to facilitate combustion of the fuel mixture;
• air deflector sleeve at least partially surrounding and accommodating the at least one discharge nozzle;
• a cylindrical blast tube surrounding the air deflector sleeve and an outlet end of the cylindrical blast tube supporting a flame retention head;
• and
• the flame retention head redirecting the supplement air radially inward through a plurality of openings formed in at least one of the air deflector sleeve and a cylindrical surface of the flame retention head to assist with combustion of the fuel mixture;
• and
• wherein the air deflector sleeve is open at an inlet end and an outlet end thereof and a diameter of both of the inlet and the outlet ends is less than a diameter of a mid-section of the air deflector sleeve, the air deflector sleeve comprises an inlet section being formed of a solid surface without any openings formed therein and an outlet section having between 15 and 100 apertures formed therein, each one of the apertures in the outlet section is approximately ¼+/−⅛ an inch in diameter, and the plurality of apertures formed in the outlet section form flow paths for the supplemental air into an internal chamber, defined within the air deflector sleeve, which assist with shaping and combustion of the fuel mixture.