A holder assembly for a burner of a gas cooking appliance. According to one embodiment, the assembly includes a gas conduit, an injector partially housed at a first end of the gas conduit. The assembly further includes a burner base and an injector base arranged below the burner base, the injector base having a through hole in which portion of the first end of the gas conduit is arranged such that the injector is oriented towards the burner base. The through hole of the injector base has at least one non-circular coupling segment, and the gas conduit has a plastically deformed intermediate segment covering the coupling segment.

The present disclosure discloses a combustor assembly and a gas water heater, the combustor assembly includes a burner and a combustor accommodating the burner, the combustor defines an opening facing upwards, the combustor further includes a front support and a rear support, and the front support and the rear support cooperatively clamp the front side and the rear side of the burner; the front support includes a first base plate extending up and down and a first limit plate connecting to an upper end of the first base plate and extending backwards, and the rear support includes a second base plate extending up and down and a second limit plate connecting to an upper end of the second base plate and extending forwards; and the first limit plate defines a first cooling hole, and/or, the second limit plate defines a second cooling hole.

The present disclosure discloses a combustor assembly and a gas water heater, the combustor assembly includes a burner and a combustor accommodating the burner, the combustor defines an opening facing upwards, the combustor further includes a front support and a rear support, and the front support and the rear support cooperatively clamp the front side and the rear side of the burner; the front support includes a first base plate extending up and down and a first limit plate connecting to an upper end of the first base plate and extending backwards, and the rear support includes a second base plate extending up and down and a second limit plate connecting to an upper end of the second base plate and extending forwards; and the first limit plate defines a first cooling hole, and/or, the second limit plate defines a second cooling hole.

A burner sub-system, a furnace comprising the same, a fuel combustion process and steam cracking process carried out in the furnace. The burner sub-system comprises a barrier wall segment between the burner tip and the flue-gas recirculation (“FGR”) duct, effectively blocking direct gas flow between the burner tip and the FGR duct opening, but without encircling the whole burner tip. The presence of the partial barrier wall has the advantage of preventing the temperature inside the FGR duct from becoming too high, while achieving low NOx emissions from the combustion process without overheating the burner tip because of reduced amount of heat reflection to the burner tip compared to an annular barrier wall. The invention is particularly useful in furnaces where hydrogen-rich fuel gas is combusted.

A burner sub-system, a furnace comprising the same, a fuel combustion process and steam cracking process carried out in the furnace. The burner sub-system comprises a barrier wall segment between the burner tip and the flue-gas recirculation (“FGR”) duct, effectively blocking direct gas flow between the burner tip and the FGR duct opening, but without encircling the whole burner tip. The presence of the partial barrier wall has the advantage of preventing the temperature inside the FGR duct from becoming too high, while achieving low NOx emissions from the combustion process without overheating the burner tip because of reduced amount of heat reflection to the burner tip compared to an annular barrier wall. The invention is particularly useful in furnaces where hydrogen-rich fuel gas is combusted.

A flare tip for discharging and burning high pressure and low pressure flare gas is provided. A cover is positioned over the upper end of a first pipe through which a high pressure waste gas stream flows. The configuration of the cover allows the high pressure waste gas to burn smokelessly. The upper end of a second pipe that is concentrically positioned around the first pipe is positioned at a lower elevation than the upper end of the first pipe, and the outer edge of the second pipe is tangential to the flat bottom portion of the cover. When the waste gas exiting the upper end of the first pipe does not have sufficient force to raise the cover off the upper end of the first pipe, the flat bottom portion of the cover forms a cap over the upper end of the first pipe while the upper end of the second pipe remains open.

A flare tip for discharging and burning high pressure and low pressure flare gas is provided. A cover is positioned over the upper end of a first pipe through which a high pressure waste gas stream flows. The configuration of the cover allows the high pressure waste gas to burn smokelessly. The upper end of a second pipe that is concentrically positioned around the first pipe is positioned at a lower elevation than the upper end of the first pipe, and the outer edge of the second pipe is tangential to the flat bottom portion of the cover. When the waste gas exiting the upper end of the first pipe does not have sufficient force to raise the cover off the upper end of the first pipe, the flat bottom portion of the cover forms a cap over the upper end of the first pipe while the upper end of the second pipe remains open.

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 invention relates to a burner (2) for a portable stove comprising a burner head (3), a mixing tube (4), a plurality of primary air ports (7) being disposed on the mixing tube (4) and an orifice (5) through which a gaseous combustible enters into the mixing tube (3) to form a gaseous mixture with ambient air. The burner head (3) is composed of an upper burner part (8) with a plurality of burner ports (11) and a burner lower part (9), the lower burner part being connectable to the mixing tube (4). The invention is characterized in that a dividing means (13) is disposed within the burner head (3). The dividing means (13) and the lower burner part (9) forming a first flow channel (C1) for the gaseous mixture, and the dividing means (13) and the upper burner part (9) forming a second flow channel (C2) for the gaseous mixture being connected to the first flow channel (C1).