A high turn-down burner adapted to receive a fuel flow for combustion including an outer housing including a central axis, a side wall having a top edge and a bottom edge, a plurality of apertures disposed on the side wall, a top wall adjoining the side wall at the top edge and a bottom wall adjoining the side wall at the bottom edge; an inner housing including a central axis, a side wall, a plurality of apertures disposed on the side wall, the inner housing is coaxially rotatable with respect to the outer housing; and an actuator adapted to harness and convert the power exerted by the fuel flow to a movement of the inner housing with respect to the outer housing, wherein the alignment of the apertures of the inner and outer housings is adapted to modify an effective combustion area of the burner.

One aspect of this disclosure provides a heat exchanger that comprises a first panel half coupled to a corresponding second panel half that form a passageway having at least a first chamber adjacent an inlet end of the passageway and a second chamber and overlapping interference patterns formed in each of the first and second panel halves that extend along at least a portion of the length of the passageway and located between at least the first and second chambers.

The present disclosure describes a metal making burner in fluid communication with a gas inlet and comprising an oxygen inlet valve that provides control of oxygen flow to two different discharge lines, such as a main line and a shroud line. This allows distinct “modes” of operation, utilizing only the flow from the single oxygen supply as the control method. The apparatus includes a moving piston with ports therein that meter flow to both discharge lines when the ports line up with a separate set of ports in a cylinder that receives the piston. At low or no pressure from the gas inlet, flow rates follow one ratio of flows between the discharge lines. As pressure from a gas inlet changes in the burner, the piston moves and realigns the ports (opening or closing some of the ports), which results in a different ratio of flows between the discharge lines.

A high turn-down burner adapted to receive a fuel flow for combustion. The burner includes a housing having a side wall with an interior surface forming an inner periphery, a bottom wall adjoining the side wall, a top wall adjoining the side wall and a plurality of apertures disposed on the side wall; a supply tube adapted through the top wall of the housing, the supply tube including a side wall having an outer surface forming an outer periphery, a top end, a bottom end, wherein the supply tube is adapted to receive the fuel flow at the top end of the supply tube; and a disk having an opening adapted to accommodate the supply tube, wherein the disk is configured to slide along a length of the supply tube within the space delineated by the inner periphery of the housing and the outer periphery of the supply tube.

The present disclosure describes a metal making burner in fluid communication with a gas inlet and comprising an oxygen inlet valve that provides control of oxygen flow to two different discharge lines, such as a main line and a shroud line. This allows distinct “modes” of operation, utilizing only the flow from the single oxygen supply as the control method. The apparatus includes a moving piston with ports therein that meter flow to both discharge lines when the ports line up with a separate set of ports in a cylinder that receives the piston. At low or no pressure from the gas inlet, flow rates follow one ratio of flows between the discharge lines. As pressure from a gas inlet changes in the burner, the piston moves and realigns the ports (opening or closing some of the ports), which results in a different ratio of flows between the discharge lines.

High turndown ratio gaseous fuel burner nozzles and the control thereof are provided. High turndown ratio gaseous fuel burner nozzles include a mechanically adjustable nozzle port, such as in the form of an iris port, for expanded turndown control. A nozzle extension longitudinally extending from the mechanical adjustable nozzle port can be included to assist in shaping the flow of combustible gas from the nozzle port. A laminar flow insert can be housed within the nozzle extension to assist in producing laminar flow of the combustible gas flowing therethrough. A burner nozzle controller in control communication with the mechanically adjustable nozzle port can adjust the size of the nozzle port to selectively maintain exit velocity of the gaseous fuel from the nozzle port for one or more of combustion stability and flame stability.

Combined burner for blowing oxidizing gas and fuel into melting furnace, which is fixedly installed into the furnace and provided with outlet apertures for fuel and oxidizing gas, consists, according to this invention, of fixed part (2) of the burner (1) and of a movable nozzle (4), which is rotatably installed inside the body (2.1) of the fixed part (2) of the burner, supply (7) of the oxidizing gas is connected to the movable nozzle (4) and it is controlled by actuator (3), installed outside of the working space of the furnace, while the axis x2 of the orifice of the movable nozzle (4) is diverted from the rotation axis x1 of the movable nozzle (4) by angle a in the range of 5-60° and the movable nozzle (4) is rotatable around the axis X1 in any direction by angle β in the range of 0-180°. The movable nozzle allows directing blown gases into various places in the furnace. At the same time, the whole burner is fixedly installed in the wall or ceiling, or the cover of the furnace, and the space of the furnace thus remains sealed.

A burner includes an oxidant feed passage, a fuel feed passage surrounding the oxidant feed passage, an air feed surrounding the fuel feed passage, a movable air flow diverter and, optionally, a flame nozzle. The movable air flow diverter and/or flame nozzle are independently configured to create one or a plurality of gas recirculation regions adjacent the downstream tip of the burner to improve the mixing and reaction of the fuel and oxidant, and overall combustion process efficiency. A related furnace and method for generating a stable flame with the burner are also provided.

A system including a variable orifice component including a main body, a main fuel path extending through the main body, and a control body positioned in the main body. The control body is movable between a first position wherein a first fuel path thereof is in fluid communication with the main fuel path to enable fuel to flow therethrough, and a second position wherein a second fuel path thereof is in fluid communication with the main fuel path to enable fuel to flow therethrough. The system further includes a vent body coupled to the main body. The vent body is movable between a first position wherein the main fuel path is in fluid communication with a vent orifice of the vent body to provide fluid communication between the main fuel path and a surrounding environment, and a second position wherein the main fuel path is not in fluid communication with the vent orifice.

A system including a variable orifice component including a main body, a main fuel path extending through the main body, and a control body positioned in the main body. The control body is movable between a first position wherein a first fuel path thereof is in fluid communication with the main fuel path to enable fuel to flow therethrough, and a second position wherein a second fuel path thereof is in fluid communication with the main fuel path to enable fuel to flow therethrough. The system further includes a vent body coupled to the main body. The vent body is movable between a first position wherein the main fuel path is in fluid communication with a vent orifice of the vent body to provide fluid communication between the main fuel path and a surrounding environment, and a second position wherein the main fuel path is not in fluid communication with the vent orifice.