178results about "Burner manufacture" patented technology

A method of manufacturing gas and/or fuel swirlers for fuel injectors and combustor domes and cone-shaped swirlers so manufactured are disclosed. The disclosed conical swirlers feature cut-through slots on a cone-shaped body. The contour and spacing of the slots are configured and arranged to accommodate a wide range of requirements for fluid flow areas and swirl strengths. Preferably, the cone-shaped swirlers can be manufactured by wire EDM processing. More preferably, multiple cone-shaped swirlers can be manufactured simultaneously by nesting swirler blanks in a stack and wire EDM processing the stack as a unit. The cone-shaped pinwheel swirler fits well into various fuel injector heads, enabling the injectors to reduce the frontal surface area and flat area for minimal potential of carbon formation.

A unitary conduit for transporting a fluid is described, the conduit comprising a body and a flow passage located within the body, the flow passage having an inlet end and an exit end, wherein the flow passage and the body have a unitary construction. In another embodiment, a unitary conduit has a flow passage wherein the cross sectional shape of the flow passage changes from a first cross sectional shape to a second cross sectional shape. In another embodiment, the exterior contour of the body generally conforms to the interior contour of the flow passage. In another embodiment, the flow passage branches to a plurality of sub-passages.

The invention relates to a burner comprising two half shells, one of which is perforated, that are tightly joined together along at least a portion of their edges, so as to form a tubular body communicating with a venturi tube. At least two corresponding ends of the two half shells have a truncated profile, providing the tubular body has at least one truncated end. The invention also relates to a venturi tube for said burner that is composed of two half shells The invention further relates to a mounting for a thermocouple and for an igniter of said burner, the mounting having coupling means that cause mutual contact surfaces to be oriented in at least three non-parallel planes and that prevent mounting rotation, so that the position thereof is accurately defined. The invention also relates to a process for fabricating said burner.

A unitary swirler is disclosed, comprising a body having a swirler axis, and a plurality of vanes arranged in a circumferential direction around the swirler axis, wherein the swirler has a unitary construction. In one embodiment, the unitary swirler has a rim located coaxially with the swirler axis, and a wall extending between a portion of the rim and a portion of the hub. In another embodiment, the unitary swirler has an adaptor having a passage that is configured to direct a flow of air towards at least some of the plurality of vanes.

A fuel injector nozzle for dispensing fuel in the combustion chamber of a gas turbine engine, includes an elongated, multi-layered, convoluted nozzle feed strip having an internal passage for directing fuel through the length of the strip from the inlet end to an outlet end; and a cylindrical, multi-layered fuel dispensing nozzle unitary with the feed strip and fluidly connected to the outlet end of the feed strip for dispensing the fuel. The multi-layered feed strip and nozzle allows complex porting of fuel circuits through the injector. The internal fluid passages through the feed strip and nozzle are formed by etching.

A method for fabricating a unitary venturi is disclosed, the method comprising the steps of determining three-dimensional information of the unitary venturi having an annular venturi wall and a swirler having a plurality of vanes arranged circumferentially around a swirler axis, converting the three-dimensional information into a plurality of slices that each define a cross-sectional layer of the unitary venturi, and successively forming each layer of the unitary venturi by fusing a metallic powder using laser energy. Exemplary embodiments are disclosed, showing a unitary venturi comprising an annular venturi wall having a swirler axis and a heat shield located at an end wherein unitary venturi is made by using a rapid manufacturing process. In one aspect of the invention, the rapid manufacturing process is a laser sintering process.

A method of assembling a fuel nozzle includes providing a first nozzle component and a second nozzle component, wherein the first nozzle component is configured and adapted to engage within the second nozzle component. Braze is applied to at least one of the first and second nozzle components. The first nozzle component is assembled into the second nozzle component to provide a diametral interference fit therebetween. The method further includes joining the first and second nozzle components together. A fuel nozzle includes a first cylindrical nozzle component, a second cylindrical nozzle component disposed with an interference fit on an outward surface of the first nozzle component, and a layer of braze joiningly disposed between the first and second nozzle components.

A unitary distributor is disclosed, comprising at least one main flow passage located within a distributor ring body, the main flow passage having an arcuate portion oriented in a circumferential direction around a distributor axis. Exemplary embodiments of a unitary distributor having an annular ring located at the axially forward end of the distributor ring body are disclosed. A fuel distributor is disclosed, comprising a fuel conduit and a distributor wherein the fuel distributor has a unitary construction.

A method for fabricating a unitary swirler is disclosed, the method comprising the steps of determining three-dimensional information of the unitary swirler having a plurality of vanes arranged in a circumferential direction on a body around a swirler axis and a wall extending between a rim and a portion of the body, converting the three-dimensional information into a plurality of slices that each define a cross-sectional layer of the unitary swirler, and successively forming each layer of the unitary swirler by fusing a metallic powder using laser energy. Exemplary embodiments are disclosed, showing a unitary swirler comprising a plurality of vanes extending from a hub having a unitary construction wherein unitary swirler is made by using a rapid manufacturing process. In one aspect of the invention, the rapid manufacturing process is a laser sintering process.

The invention relates to a burner (1) for cookers, suitable for burning gas, comprising at least two gas crowns, of which one central one and at least one circumferential one, a mixing chamber (13) with Venturi effect, ducts for entry of the primary air and radial ducts (9) for feeding the gas/primary air mixture to the said at least one circumferential crown, comprising a body (3), a head (2) and a separation element (4) that breaks up the internal space into ducts for entry of the primary air and ducts for distribution of the gas/primary air mixture.

A multiple fingered burner includes controls for continuity of gas flow and ignition throughout all of the ports peripherally positioned around the contoured wall of the burner body. A plurality of burner parts are nested together with an indexer limiting insertion to at least one predetermined alignment in order to avoid improper fit or alignment between adjacent burner parts. In addition, the peripherally positioned ports are covered by a laterally extending lip of a cap, and at least one of the parts includes recesses adjacent the laterally extending lip to provide ignitable gas flow passages along the peripheral wall of the burner that maintain continuity of ignition at adjacent burner ports.

A fuel injector for a gas turbine engine includes a monolithic nozzle body that defines within its interior one or more fuel circuits. Each fuel circuit includes an inlet, an outlet orifice, a main passage fluidly coupling the inlet with the outlet orifice, and a branch passage connected to the main passage. The branch passage connects to the main passage downstream of the inlet and upstream of the outlet orifice to form an effective metering flow area that is smaller than the flow area of the outlet orifice.

A gas burner and a gas burner assembly for an appliance are provided. The gas burner assembly includes a unitary gas burner comprising a body portion, a cap portion, and a gas conduit portion. A plurality of burner ports is defined in the sidewall of the body portion of the unitary gas burner. A gas burner is also provided. The gas burner comprises a body portion, a cap portion, and a gas conduit portion that are segments of a single piece forming the gas burner.

A gas burner includes a looped head seat formed by punching a metal plate, and defining therein a surrounding duct therein which is fluidly communicated with a gas conduit for supplying fuel gas to the surrounding duct, and a looped burner cap engaged with the head seat to define a partition space therebetween. One of inner and outer surrounding regions of an upper wall of the head seat has a plurality of intercommunicating ports, whereas one of corresponding inner and outer surrounding regions of an upper cap wall of the burner cap has a plurality of discharging orifices such that the fuel gas in the surrounding duct is guided to flow through the intercommunicating ports into the partition space and is discharged through the discharging orifices. By means of the arrangement of the ports and the orifices, occurrence of backfires in the surrounding duct can be prevented.

The gas tube fryer comprises substantially 90° in-shot burners, burner mounting boxes, a one-piece burner mounting bracket, and a bracket housing, all of which are used in conjunction with heat exchanger tubes, heat transfer baffles, a frypot, and a flue in a fryer. The burner mounting boxes are keyed specifically to the face of the burner, preventing substantial movement of the burners and introduction of ambient air into the heat exchange tubes. Each burner is also keyed to the mounting bracket, also preventing substantial movement and providing easy installation and repair. The ninety-degree orientation of the burners facilitates mixing of the combustion gases, and the burner comprises a screen on its face that helps to ensure maximum burner efficiency.

The invention provides a combustion chamber configuration device for an evaporator type combustor, especially for a mobile heating device, which includes: an evaporator supporter (2) for holding an evaporator body (3), wherein a fuel supply section opening accesses to the evaporator supporter; an evaporator body (3) made of the absorptive material, wherein the evaporator body (3) is abutted against the evaporator supporter (2) and a circumferential combustion chamber wall (4) which is fixed to the evaporator supporter (2) for forming a combustion chamber (10) which converts the fuel by using the combustion air. The combustion chamber wall (4) includes an inward-extended projection (12) which is formed by deformation of the material of the combustion chamber wall (4) and the evaporator body (3) is retained in a manner that the inward-extended projection (12) abuts against the evaporator supporter (2).

The invention relates to a method of manufacturing a front face (21) for a burner (1), particularly for the gasification of solid carbonaceous materials by partial combustion. The front face (21) comprises a central aperture (23) corresponding to the discharge end of the burner, a front side wall (24) and a backside wall (25) spaced by one or more baffles (26) defining a coolant flow path with a coolant inlet (30) and a coolant outlet (31). The front side wall (24) and the one or more baffles (26) are made of a single piece of metal and the backside wall (25) is welded on the free top ends of the one or more baffles. The front face can for example be made of a steel according to UNS N07718.