A burner assembly includes a plurality of burners for mixing fuel and air. Each of the plurality of burners includes: a fuel nozzle for injecting the fuel; a mixing passage supplied with the fuel and the air; and a support portion connecting a passage wall of the mixing passage and the fuel nozzle to support the fuel nozzle.

A burner contains a burner component. The burner component includes a main frame and at least one stable burning isolation strip. An interior of the main frame is divided into at least two ventilation areas by the stable burning isolation strip in a gas channel direction. Several separation mechanisms are arranged in each ventilation area and divide the ventilation area into several through holes distributed in the gas channel direction. The through holes are used for a mixed gas of fuel gas and air to pass through and enhancing a mixing effect of the fuel gas and the air. The flame of a burning surface of the main frame can be divided into independent flames by the stable burning isolation strip so that the burning is more stable and fewer pollutants are emitted.

A burner contains a burner component. The burner component includes a main frame and at least one stable burning isolation strip. An interior of the main frame is divided into at least two ventilation areas by the stable burning isolation strip in a gas channel direction. Several separation mechanisms are arranged in each ventilation area and divide the ventilation area into several through holes distributed in the gas channel direction. The through holes are used for a mixed gas of fuel gas and air to pass through and enhancing a mixing effect of the fuel gas and the air. The flame of a burning surface of the main frame can be divided into independent flames by the stable burning isolation strip so that the burning is more stable and fewer pollutants are emitted.

A gas burner for a household appliance includes a burner housing having a mixing chamber for mixing fuel gas with primary air, a gas nozzle accommodated in the burner housing and configured to inject the fuel gas into the mixing chamber, and an annular first primary air inlet provided between the gas nozzle and the mixing chamber for drawing in the primary air. The gas nozzle has a second primary air inlet which is guided through the nozzle for drawing in the primary air. The second primary air inlet is configured in a direction of flow of the primary air through the second primary air inlet to taper at least once and to widen out again. The gas nozzle has an annular fuel gas outlet opening which opens directly into the second primary air inlet.

A gas burner for a household appliance includes a burner housing having a mixing chamber for mixing fuel gas with primary air, a gas nozzle accommodated in the burner housing and configured to inject the fuel gas into the mixing chamber, and an annular first primary air inlet provided between the gas nozzle and the mixing chamber for drawing in the primary air. The gas nozzle has a second primary air inlet which is guided through the nozzle for drawing in the primary air. The second primary air inlet is configured in a direction of flow of the primary air through the second primary air inlet to taper at least once and to widen out again. The gas nozzle has an annular fuel gas outlet opening which opens directly into the second primary air inlet.

Submerged combustion burners having a burner body and a burner tip connected thereto. The burner body has an external conduit and first and second internal conduits substantially concentric therewith, forming first and second annuli for passing a cooling fluid therethrough. A burner tip body is connected to the burner body at ends of the external and second internal conduits. The burner tip includes a generally central flow passage for a combustible mixture, the flow passage defined by an inner wall of the burner tip. The burner tip further has an outer wall and a crown connecting the inner and outer walls. The inner and outer walls, and the crown are comprised of same or different materials having greater corrosion and/or fatigue resistance than at least the external burner conduit.

A rich-lean flame burner having on an upper part thereof: a longitudinally elongated lean burner port; and a rich burner port lying adjacent to at least one lateral side of the lean burner port with a clearance therebetween. At a plurality of longitudinal points of straightening members having a plurality of straightening plates which divide the lean burner port into a plurality of laterally sectioned regions, there are disposed first constricted portions which bring upper parts of the straightening plates into intimate contact with each other. Second constricted portions are disposed in at least laterally outermost straightening plates to further divide each portion of the lean burner port that has been divided by the first constricted portions. The second constricted portions are such that the lower end thereof is positioned above the lower end of the first constricted portions, and that the vertical length is shorter than the first constricted portions.

A gas burner for a cooking appliance includes a body defining perimeter and having a plurality of first groups of respective pluralities of first outlets a plurality of second groups of respective pluralities of second outlets. Each of the first outlets respectively defines a first outlet area, and each of the second outlets defines respective reduced outlet areas that are less than the first outlet area. Further, the first groups and second groups are alternately arranged around the perimeter, and a total number of first outlets is greater than a total number of second outlets.

A cover member of a gas supply manifold has a bent rising wall portion that is formed by bending a part of the cover member so as to rise in an opposite direction of a main body. The bent rising wall portion is in a form of a loop surrounding the entire circumference of a gas supply flow path and an area around the gas supply flow path. Such configuration increases the rigidity of the cover member and prevents large distortion of the cover member and leakage of gas from the gas supply flow path. As a result, the thickness of the cover member is reduced and the weight and the production cost of the gas supply manifold are also reduced.

The inventive concept relates to a swirler. According to an aspect of the inventive concept, there is provided a swirler including a casing, a pilot body disposed in the casing, and a plurality of vanes arranged along a circumference of the pilot body, wherein at least a part of the vane protrudes further to a downstream than an end portion of the pilot body.