A conveyor oven for cooking food and having an oven chamber in which food is cooked; a conveyor moveable to convey food within the oven chamber; a burner assembly operable to emit a flame to heat air for cooking food moving within the oven chamber on the conveyor; a burner tube extending into a compartment and positioned to receive at least a portion of the flame emitted by the burner assembly; and one or more passive tubes in the compartment positioned opposite the burner tube, wherein elongated baffles are located between adjacent passive tubes, wherein a baffle plate is located between the burner and passive tubes to restrict airflow from the burner tube to the passive tube, and/or wherein shelf assemblies in the oven enable movement (and in some cases removal) of a shelf with a corresponding fan and/or motor without disturbing other shelves and their corresponding fans and/or motors.

The present invention provides a tubular member and a burner with a tubular member that is capable of improving the flavor of a food product having undergone roasting treatment. A tubular member that is a part of a burner with a tubular member is attached to a tip of a gas burner, and has holes through which the combusting flames pass. This configuration eliminates gas odor from a food product having undergone roasting treatment. Thus, the flavor of the food product having undergone roasting treatment can be improved.

Methods and combustion devices for reducing NOx formation upon combusting oxidant with fuel to form products of combustion are provided. Such methods and device may involve mixing at least first portions of at least two fluids selected from the group of oxidant, fuel and recirculated products of combustion in at least one first conduit to form a first mixture. The first mixture is subsequently supplied to a plurality of second conduits each in direct fluid communication with the first conduit. Motive energy is utilized to aspirate at least second portions of one or more fluids selected from the group of oxidant, fuel and recirculated products of combustion in at least one second conduit to form a combustible mixture that can be subsequently burned. In one embodiment, the motive energy may be provided or result from the first mixture.

Methods and combustion devices for reducing NOx formation upon combusting oxidant with fuel to form products of combustion are provided. Such methods and device may involve mixing at least first portions of at least two fluids selected from the group of oxidant, fuel and recirculated products of combustion in at least one first conduit to form a first mixture. The first mixture is subsequently supplied to a plurality of second conduits each in direct fluid communication with the first conduit. Motive energy is utilized to aspirate at least second portions of one or more fluids selected from the group of oxidant, fuel and recirculated products of combustion in at least one second conduit to form a combustible mixture that can be subsequently burned. In one embodiment, the motive energy may be provided or result from the first mixture.

The fuel nozzle for the gas turbine includes a radial swirler and an axial swirler. The radial swirler is arranged to swirl a first flow of a first oxidant-fuel mixture and the axial swirler is arranged to swirl a second flow of a second oxidant-fuel mixture. The first flow may be fed by a central conduit and the second flow may be fed by an annular conduit surrounding the central conduit.

The fuel nozzle for the gas turbine includes a radial swirler and an axial swirler. The radial swirler is arranged to swirl a first flow of a first oxidant-fuel mixture and the axial swirler is arranged to swirl a second flow of a second oxidant-fuel mixture. The first flow may be fed by a central conduit and the second flow may be fed by an annular conduit surrounding the central conduit.

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.

The present disclosure is related to a dual ring gas burner wherein the outer ring includes multipoint injection with bottom breathing and the inner ring works with top breathing. Two flame rings are included along with burner ports on the caps. As a result, better heating distribution is achieved along with greater ease in cleaning and combined simmer functions with high ratings by having the outer ring gas flow not interfering with the inner ring.

The present device relates to a system of gas burners, in particular for a cooking top for household use and including a pair of substantially concentric burners. The pair of burners including an outer burner equipped with a first base, a first burner body and a first flame divider, and an inner burner equipped with a second base, a second burner body and a second flame divider. The present device is characterized in that the first base of the outer burner and the second base of the inner burner are made from a metallic sheet that is shaped by deep drawing.