US20070048685A1 - Fuel burner - Google Patents
Fuel burner Download PDFInfo
- Publication number
- US20070048685A1 US20070048685A1 US11/294,073 US29407305A US2007048685A1 US 20070048685 A1 US20070048685 A1 US 20070048685A1 US 29407305 A US29407305 A US 29407305A US 2007048685 A1 US2007048685 A1 US 2007048685A1
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- US
- United States
- Prior art keywords
- burner
- fuel
- cavity
- fuel burner
- port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/78—Cooling burner parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/82—Preventing flashback or blowback
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/10—Flame diffusing means
- F23D2203/102—Flame diffusing means using perforated plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2212/00—Burner material specifications
- F23D2212/20—Burner material specifications metallic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2213/00—Burner manufacture specifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/00003—Fuel or fuel-air mixtures flow distribution devices upstream of the outlet
Definitions
- the present invention relates fuel burners, for example, fuel burners for use during various material processing procedures.
- a fuel burner comprises a body including at least one burner port.
- the body is fabricated from a material having a thermal conductivity greater than about 80 W/mK.
- the fuel burner further comprises a fluid coolant system for removing heat from the body.
- the fuel burner is capable of producing a flame having a temperature of at least about 2000° C.
- a fuel burner comprises a body including a cavity and at least one burner port in communication with the cavity.
- the fuel burner includes an apparatus positioned in the cavity and adapted to prevent flashback through the at least one burner port.
- the fuel mixture is adapted to pass through the apparatus, the cavity and the at least one burner port in use.
- a fuel burner comprises a body including a cavity and at least one burner port in communication with the cavity.
- the fuel burner further includes a mixing device positioned in the cavity and adapted to mix a fuel and oxidizer prior to flowing through the at least one burner port.
- the mixing device defines a fluid path having a plurality of angular turns.
- a fuel burner comprises a body including a cavity and at least one burner port in communication with the cavity.
- the body is fabricated from a material having a thermal conductivity greater than about 80 W/mK.
- the fuel burner further includes an apparatus positioned in the cavity and adapted to prevent flashback through the at least one burner port.
- the fuel burner further comprises a fluid coolant system adapted to remove heat from the body.
- the fluid coolant system is adapted to prevent the body from melting in use.
- a fuel burner comprises a body including a cavity and a plurality of burner ports in communication with the cavity.
- the body is fabricated from a material having a thermal conductivity greater than about 80 W/mK.
- the fuel burner further includes a mixing device positioned in the cavity and adapted to mix a fuel and oxidizer prior to flowing through the plurality of burner ports.
- the mixing device defines a fluid path having a plurality of angular turns.
- a fluid coolant system is also provided for removing heat from the body.
- the fuel burner is capable of producing a flame having a temperature of at least about 2000° C.
- FIG. 1 is a perspective view of a fuel burner in accordance with an exemplary embodiment of the present invention with portions broken away to depict interior portions of the fuel burner.
- FIG. 2 illustrates an exemplary fluid coolant path for the burner of FIG. 1 .
- FIG. 3 is a top view of the fuel burner of FIG. 1 .
- FIG. 4A is a sectional view along line 4 A- 4 A of FIG. 3 .
- FIG. 4B is a sectional view along line 4 B- 4 B of FIG. 3 .
- FIG. 5 is a sectional view along line 5 - 5 of FIG. 3 .
- FIG. 6 is a sectional view along line 6 - 6 of FIG. 3 .
- FIG. 7 is an exploded view of the fuel burner of FIG. 1 .
- FIG. 8 is a perspective view of a fuel burner in accordance with another exemplary embodiment of the present invention.
- FIG. 9 is an exploded view of the fuel burner of FIG. 8 .
- FIG. 10 is a perspective view of a fuel burner in accordance with another exemplary embodiment of the present invention.
- FIG. 11 is a top view of the fuel burner of FIG. 10 .
- FIG. 12 is a sectional view along line 12 - 12 of FIG. 11 .
- FIG. 13 is a sectional view along line 13 - 13 of FIG. 11 .
- FIG. 14 is a sectional view along line 14 - 1 of FIG. 11 .
- FIG. 1 depicts a perspective view of an exemplary fuel burner 20 in accordance with aspects of the present invention.
- FIG. 1 further depicts portions of the fuel burner 20 are shown broken away to depict interior areas of the fuel burner.
- the fuel burner includes a body 22 with at least one burner port. Although a single burner port may be used, the illustrated embodiments depict the at least one burner port comprising a plurality of burner ports 24 . Although any number of ports may be used, exemplary embodiments include at least 100 burner ports.
- Burner ports of each embodiment of the present invention may comprise various shapes and may be arranged in various patterns to control the burner flame characteristics and/or heat loading within the burner body.
- the body 22 may include a burner face surface 26 including openings of the burner ports 24 .
- a peripheral surface 28 can circumscribe the burner face surface 26 and a chamfer surface 30 can extend between at least a portion of the burner face surface 26 and the peripheral surface 28 . As shown, the chamfer surface 30 can extend about the entire periphery of the fuel burner. The optional chamfer surface 30 may facilitate air movement from a location behind the burner surface to help release the flame from the burner face surface 26 .
- the body of fuel burners in accordance with the various embodiments of the present invention can comprise a one-piece member or may be assembled from a plurality of body portions. As shown in FIG. 1 , for example, the body 22 can include a central portion 22 a, a first end portion 22 b and a second end portion 22 c.
- portions of the body can comprise a wide variety of materials while incorporating aspects of the present invention.
- the body of exemplary fuel burners may comprise a material having a thermal conductivity that is greater than about 80 W/mK.
- the body of further fuel burners may comprise a material having a thermal conductivity greater than about 100 W/mK.
- the body of additional fuel burners may comprise a material having a thermal conductivity greater than about 120 W/mK.
- Exemplary body portions of each fuel burner described herein may be formed from a variety of materials including, but not limited to, one or more of aluminum, copper, tungstein, iron, gold and/or nickel or the like.
- Composites, alloys, coatings and/or other various material characteristics or types may also be used to provide a body with satisfactory thermal performance. Further aspects of the invention may be practiced with a body or a portion of a body having a lower thermal conductivity.
- further fuel burners may include a body or portions of a body formed from a material having a thermal conductivity that is less than 80 W/mK.
- the fuel burners may include a body or portions of a body having a thermal conductivity that is less than 80 W/mK, but having a coating layer comprising a material having a thermal conductivity that is greater than about 80 W/mK.
- Exemplary fuel burners of each embodiment of the present invention may include a fluid coolant system to remove heat from the fuel burner body.
- the fluid coolant system may allow use of materials that might otherwise degrade under temperature conditions that exceed the melting point of the material.
- using materials with a higher thermal conductivity e.g., greater than about 80 W/mK can more efficiently conduct heat through the body for removal by the fluid circulating in the fluid coolant system, if provided.
- Coolant systems may be provided as a separate component of the fuel burner or may be integrated with the fuel burner body. As shown in the figures, the coolant system 40 may be integrated with the fuel burner body 22 . The fluid coolant system may also include various alternative fluid paths through the body 22 of the fuel burner.
- the central portion 22 a may be provided with an inlet socket 42 configured to receive in inlet fitting (not shown) of the fluid coolant system.
- the central portion 22 a of the body 22 is also provided with a first lower horizontal bore 44 in fluid communication with the inlet socket 42 .
- the second end portion 22 c of the body 22 is provided with a first vertical bore 46 in fluid communication with the first lower horizontal bore 44 .
- the central portion 22 a of the body 22 is also provided with a first upper horizontal bore 48 .
- the first upper horizontal bore 48 is placed in fluid communication with the first vertical bore 46 and a transverse bore 50 formed in the first end portion 22 b of the body 22 .
- the central portion 22 a can also include a second upper horizontal bore 52 providing fluid communication between the transverse bore 50 and a second vertical bore 54 defined in the second end portion 22 c.
- the central portion 22 a can further include a second lower horizontal bore 56 providing fluid communication between the second vertical bore 54 and an outlet socket 58 .
- the outlet socket 58 is configured to receive an outlet fitting (not shown) of the fluid coolant system.
- Seals such as an O-rings 45 , can be provided at interfaces between the central portion 22 a and each end portion 22 b, 22 c to prevent fluid leakage from the bores formed in the body 22 .
- the first and second vertical bores 46 , 54 may each be provided with a respective plug 47 a, 47 b adapted to close the open end of the respective vertical bore.
- the fluid coolant system 40 can include a supply line 41 a providing a conduit for fluid to travel from a fluid reservoir 49 to the inlet socket 42 .
- the fluid coolant system 40 can further include a return line 41 b providing a conduit for fluid to travel from the outlet socket 58 back to the fluid reservoir 49 .
- the supply line and/or return line may also comprise a fluid pump 43 adapted to cause fluid to circulate through the coolant circuit.
- the pump 43 may cause fluid to circulate along path 42 a while entering the inlet socket 42 .
- the fluid circulates along path 44 a while passing through the first lower horizontal bore 44 .
- the fluid then circulates vertically along path 46 a while passing through the first vertical bore 46 .
- the fluid then circulates about the burner ports 24 along circulation paths 48 a, 50 a, 52 a while respectively passing through bores 48 , 50 and 52 .
- the fluid then circulates vertically along path 54 a while passing through the second vertical bore 54 .
- the fluid then circulates horizontally along path 56 a while passing through the second lower horizontal bore 54 prior to exiting through the outlet socket 58 .
- the thermally loaded fluid stream then passes through the return line 41 b and dumped into the fluid reservoir 49 .
- the size of the fluid reservoir 49 may permit the reservoir to act as a heat sink. Alternatively, a refrigeration or other cooling arrangement (not shown) may remove heat from the fluid reservoir 49 .
- the upper paths 48 a, 50 a, 52 a define a U-shaped coolant passage the circumscribes a substantial portion of the burner ports 24 . It will be appreciated that substantially circumscribing the burner ports can facilitate heat removal from the body away from the burner face of the body.
- the fluid paths can also be located in close proximity to one or more burner ports to increase the rate of heat removal from the burner port area.
- the U-shaped coolant passage can be positioned a distance “d” from a peripheral burner port. In exemplary embodiments, the distance “d” can be less than about 1 centimeter although other distances may be incorporated in further embodiments of the present invention.
- Forming the fuel burner with a body fabricated from a material having a thermal conductivity greater than about 80 W/mK in combination with a fluid coolant system can produce flames having enhanced flame characteristics without damaging the body of the fuel burner.
- such fuel burners can produce a flame having a temperature of at least about 2000° C. to sufficiently heat materials during various material processing procedures.
- the flame temperature is at least 2400° C.
- the fuel burners of the invention can also have enhanced power output.
- fuel burners may have a power output of greater than about 75 KW although fuel burners may be designed with other power output levels.
- the fuel burners have a controllable power output of greater than 100 KW.
- the fuel burners have a controllable power output of greater than 120 KW.
- the fuel burners have a controllable power output of greater than 150 KW.
- the fuel burners have a controllable power output of greater than 500 KW.
- fuel burners of the present invention can be designed to produce a flame having a laminar flow portion with a length of at least about 5 centimeters. Increasing the length of the laminar flow portion of the flame can provide sufficient clearance between the material being processed and the fuel burner while reducing the power loss as the flame propagates toward the material being processed. Still further, fuel burners of the present invention can be designed to produce a flame adapted to operate with an average flow velocity of a fuel mixture through the at least one burner port of less than about 40 n/s. In this regard, the average flow velocity is the volume flow rate of the fuel and oxidizer mixture divided by the area of the burner ports through which the mixture is flowing. Providing an average flow velocity that is less than about 40 m/s can reduce turbulent flow that can otherwise lead to inefficiencies of heat loss to the surrounding environment.
- each embodiment of the invention described and illustrated herein may include a mixing device adapted to more thoroughly mix a fuel and an oxidizer prior to flowing through the at least one burner port of the fuel burner.
- the mixing device defines a fluid path having a plurality of angular turns.
- Mixing devices in accordance with the present invention can define a plurality of angular turns in a wide variety of ways. Providing angular turns in the fluid path is believed to promote further mixing of the fuel and oxidizer as the fluid mixture propagates through the fuel burner. The angular turns may be gradual; however, abrupt angular turns are believed to provide more thorough mixing of the fuel and oxidizer.
- the fluid path direction can change through various angles to promote mixing of the fluid.
- the fluid path may have at least one angular turn of at least 90 degrees.
- the fluid path can have at least one angular turn of from about 90 degrees to about 180 degrees.
- the fluid path may have at least one angular turn of less than 90 degrees.
- the mixing device may include various features adapted to promote mixing of the fuel and oxidizer within the fuel burner.
- the mixing device can include one or more flow dividers.
- the flow divider if provided, is adapted to divide an upstream flow into at least two downstream flows.
- the two downstream flows can each take an angular turn of approximately 90 degrees such that the two downstream flows travel in substantially opposite directions.
- the divided fuel flow streams can be subsequently recombined to provide a shuffling effect for more thorough mixing of the fuel and oxidizer.
- Flow dividers can comprise a variety of shapes and configurations to selectively divide an upstream fluid flow into at least two downstream fluid flows.
- the flow divider can divide the flow as it passes through and/or around the flow divider.
- the fuel burner 20 includes a first flow divider comprising a first plate 62 and a second flow divider comprising a second plate 64 .
- the second plate 64 is offset from the first plate 62 in a direction toward the burner ports 24 .
- the first plate 62 can comprise at least one aperture to selectively allow fluid communication through the first plate 62 .
- the second plate 64 can include a plurality of apertures greater in number than the aperture(s) of the first plate 62 .
- the first plate 62 comprises first and second apertures 62 a, 62 b while the second plate 64 comprises four apertures 64 a, 64 b, 64 c, 64 d.
- the apertures of the second plate 64 are not aligned with any aperture of the first plate 62 to encourage a desired flow division between the downstream apertures.
- the an upstream flow path 72 enters through an inlet socket 69 .
- the upstream flow path 72 then divides into two downstream flow paths 74 , 76 traveling in substantially opposite directions toward respective apertures 62 a, 62 b in the first flow divider 62 .
- the fuel and oxidizer mixture flowing along path 74 is then further divided into two additional downstream flow paths 78 , 80 traveling in substantially opposite directions toward respective apertures 64 a, 64 b in the second flow divider 64 .
- the fuel and oxidizer mixture flowing along path 76 is further divided into two additional downstream flow paths 82 , 84 traveling in substantially opposite directions toward respective apertures 64 c, 64 d in the second flow divider 64 .
- the mixing device 60 can include a third flow divider 66 .
- the third flow divider 66 is adapted to divide a flow of fuel into two paths that travel about a peripheral edge of the flow divider.
- the third flow divider 66 can comprise a plate having opposed peripheral edges 68 (see FIG. 7 ).
- each edge 68 is adapted to cooperate with the body 22 to define a pair of flow channels 70 that permit each of the downstream flows 78 , 80 , 82 , 84 to be further divided into two additional flow paths 86 , 88 that travel about the periphery of the third flow divider 66 .
- Fuel burners in accordance with aspects of the present invention can also include an optional apparatus 90 positioned within a cavity 91 of the fuel burner and adapted to prevent flashback through the at least one burner port 24 .
- the fuel mixture is adapted to pass through the apparatus 90 , the cavity 91 and the at least one burner port 24 in use.
- flashback might result from uneven flow through the burner ports.
- a relatively low fuel/oxygen flow through one burner port may allow the flame to propagate back through the corresponding burner port.
- the fuel and oxidizer mixture within the cavity may combust. Combustion of the fuel and oxidizer mixture within the cavity can interfere with the burner performance and can potentially lead to a dangerous explosion.
- the optional apparatus 90 may function to more evenly distribute the fuel and oxidizer mixture to travel at substantially the same velocity through each of the plurality of burner ports. With equal velocity passage through the burner ports, the probability of flashback through one of the burner ports may be reduced.
- Apparatus adapted to prevent flashback can comprise a wide range of structures within the cavity of the fuel burner.
- the apparatus can comprise a member extending across the cavity wherein the member includes a plurality of passages to allow passage of the fuel and oxidizer mixture.
- the member can comprise a mesh, fabric or other member adapted to provide a uniform fluid flow.
- the member comprises a plate 92 with a plurality of passages extending through the plate.
- the apertures can be substantially evenly distributed along the entire surface area of the plate to encourage uniform flow through substantially the entire surface area of the plate.
- the apparatus may also comprise a single plate, further exemplary apparatus can include two or more plates that are offset from one another in a direction toward the burner ports.
- the apparatus 90 comprises three plates 92 that are offset from one another in a direction toward the burner ports 24 .
- the plates 92 are shown as identical however it is contemplated that the plates may have different aperture patterns. For example, the density of the apertures may increase from one plate to the next in a direction toward the burner ports.
- the first plate 62 and the second plate 64 are inserted within slots 32 formed along the length of the central portion 22 a of the body 22 .
- the third plate 66 is then inserted within slots 34 also formed along the length of the central portion 22 a.
- Enlarged ends 66 b of the third plate 66 are dimensioned to substantially match the slots 34 such that the reduced central portion 66 a of the third plate 66 forms the channel 70 as previously described.
- the three plates 92 of the apparatus 90 are then inserted within the slots 36 formed along the length of the central portion 22 a. Threaded inserts 96 are positioned within bores 98 to facilitate threaded engagement with bolts 99 .
- the lower seals 45 are positioned within seats 38 defined in the central portion 22 a of the body 22 while upper seals are positioned within seats 25 defined in the first and second end portions 22 b, 22 c of the body 22 .
- the bolts 99 are then inserted through respective bores 23 defined in the end portions and threaded with a respective threaded insert 96 to fasten the end portions 22 b, 22 c with respect to the central portion 22 a.
- FIGS. 8 and 9 depict a fuel burner 120 in accordance with another exemplary embodiment of the present invention.
- the fuel burner 120 includes a body 122 with at least one burner port 124 .
- the body can be constructed from the same materials as the body 22 of the fuel burner 20 discussed above.
- the fuel burner 120 can cooperate with a fluid coolant system 140 to provide desirable flame characteristics as also described with respect to the fuel burner 20 above.
- the body 122 includes a front portion 122 a and a rear portion 122 b.
- the rear portion 122 b is provided with a supply line 141 a and a return line 141 b.
- the front portion 122 a is provided with a peripheral groove 129 that may be sealed by a shroud 127 to define a circumferential fluid path 146 in communication with the supply line 141 a and the return line 141 b.
- the circumferential fluid path 146 forms a substantial C-shaped coolant passage that circumscribes a substantial portion of the at least one burner port 124 .
- the C-shaped coolant passage can be positioned such that it is positioned less than about 1 centimeter from a peripheral burner port of the plurality of burner ports 124 .
- the shroud 127 also includes a peripheral surface 128 that circumscribes a burner face surface 126 .
- a chamfer surface 130 can extend between at least a portion of the burner face surface 126 and the peripheral surface 128 . The chamfer surface 130 can facilitate air movement from a location behind the burner surface to help release the flame from the burner face surface 126 .
- the rear portion 122 b is further provided with a fuel line 132 adapted to provide the burner with a fuel and oxidizer mixture.
- the fuel burner 120 may also be provided with a supplemental line 134 defining an internal conduit 135 .
- the internal conduit 135 is adapted to communicate with a central aperture 125 by way of a funnel 138 .
- Additives may be introduced through internal conduit 135 to pass through an aperture 139 of the funnel 138 and out the central aperture 125 in the burner face surface 126 .
- Various additives may pass through the central aperture 125 to impact flame characteristics and/or to provide a coating to the material being processed.
- additives examples include detergents, stabilizers, metal-deactivators, (ashless) dispersants, anti-oxidants, cold flow improvers, anti-corrosion, biocides, lubricity enhancers, dehazers, antistatic agents, foam reducers, etc.
- the supplemental line 134 is attached to the rear portion 122 b of the body 122 such that the internal conduit 135 is in communication with an interior area of the funnel 138 .
- Seals 145 are then placed within seats (not shown) in the back of the front portion 122 a and then the rear portion, together with the supplemental line 134 , is positioned with respect to the front portion 122 a of the housing 122 .
- bolts 199 are passed through respective bores 123 in the rear portion 122 b and screwed into threaded inserts (not shown) provided in bores (not shown) in the back of the front portion 122 a.
- the shroud 127 is then attached with respect to the front portion 122 a of the housing 122 . Once attached, the shroud 127 cooperates with the peripheral groove 129 to define the circumferential fluid path 146 .
- the fuel burner may comprise an apparatus positioned within a cavity of the body 122 to prevent flashback through the at least one burner port 124 such that the fuel mixture is adapted to pass through the apparatus, the cavity and the at least one burner port in use.
- the fuel burner may comprise a mixing device positioned within the cavity and adapted to mix a fuel and oxidizer prior to flowing through the at least one burner port 124 .
- the mixing device if provided, defines a fluid path having a plurality of angular turns.
- the supply line 141 a and the return line 141 b may be placed in communication with a reservoir and a pump in a similar manner as described with respect to the fluid coolant system 40 discussed above.
- fluid coolant travels along a fluid supply path 148 , about the circumferential fluid path 146 , and then along a fluid return path 150 .
- the fluid coolant system can provide a cooling function for the body 122 of the fuel burner 120
- a fuel and oxidizer mixture may also be provided by way of the fuel line 132 .
- the fuel and oxidizer mixture passes through a cavity within the housing 122 and then out through the burner ports 124 .
- the fuel and oxidizer mixture may pass through a mixing device and/or an apparatus to prevent flashback located within the cavity prior to exiting through the at least one burner port 124 .
- additive may also pass through the internal conduit 135 , the funnel 138 and the aperture 125 in the burner face surface 126 of the fuel burner 120 .
- FIGS. 10-14 depict a fuel burner 220 in accordance with a further exemplary embodiment of the present invention.
- the fuel burner 220 includes a body 222 with at least one burner port 224 .
- the body can be constructed from the same materials as the body 22 of the fuel burner 20 discussed above.
- the fuel burner 220 can cooperate with a fluid coolant system 240 to provide desirable flame characteristics as also described with respect to the fuel burner 20 above.
- the body 222 can include a burner face 226 including openings of the burner ports 224 .
- a peripheral surface 228 can circumscribe the burner face surface 226 and a chamfer surface 230 can extend between at least a portion of the burner face surface 226 and the peripheral surface 228 .
- the optional chamfer surface 230 may facilitate air movement from a location behind the burner face surface to help release the flame from the surface 226 .
- the body 222 can comprise a one-piece member or may be assembled from a plurality of body portions. As shown in FIG. 10 , for example, the body 222 can include a central portion 222 a, a first end portion 222 b and a second end portion 222 c. As shown, the first and second end portions 222 b, 222 c can be attached to the central portion 222 a by way of bolts 229 .
- the fuel burner 220 can also comprise a fluid coolant system 240 . As shown in FIG. 12 , portions of the fluid coolant system extend through the second end portion 222 c of the body 222 .
- the second end portion 222 c can be provided with an inlet socket 242 in communication with an first inlet bore 244 .
- the second end portion 222 c can further include a second inlet bore 246 in fluid communication with the first inlet bore 244 .
- portions of the fluid coolant system 240 extend through the first end portion 222 b of the body 222 .
- the first end portion 222 b can be provided with an outlet socket 258 in communication with a first outlet bore 260 .
- the first end portion 222 b can further include a second outlet bore 262 in fluid communication with the first outlet bore 260 .
- the second outlet bore 262 and the second inlet bore 246 are substantially parallel with respect to one another and extend along respective outer peripheral portions of the fuel burner 220 .
- portions of the fluid coolant system 240 can also extend through the central portion 222 a.
- the central portion 222 a can include a first transverse bore 248 a, a second transverse bore 248 b, a third transverse bore 248 c, and a fourth transverse bore 248 d.
- Each transverse bore is in fluid communication with the second inlet bore 246 defined in the second end portion 222 c and the second outlet bore 262 defined in the first end portion 222 b.
- the transverse bores 248 a - d are substantially parallel with respect to one another and offset from one another to allow the fluid coolant system 240 to circumscribe sets of burner ports.
- first and second transverse bores 248 a, 248 b extend substantially parallel with respect to one another between the second inlet and outlet bores 246 , 262 to circumscribe a first set of burner ports 224 a.
- the second and third transverse bores 248 b, 248 c also extend substantially parallel with respect to one another between the second inlet and outlet bores 246 , 262 to circumscribe a second set of burner ports 224 b.
- the third and fourth transverse bores 248 c, 248 d extend substantially parallel with respect to one another between the second inlet and outlet bores 246 , 262 to circumscribe a third set of burner ports 224 c. As shown in FIG.
- the second transverse bore 248 b extends through a portion 223 a of the body that extends between the first and second sets of burner ports 224 a, 224 b.
- the third transverse bore 248 c extends through another portion 223 b of the body that extends between the second and third sets of burner ports 224 b, 224 c.
- One or more of the second inlet and outlet bores and/or transverse bores may be positioned less than about 1 centimeter from a peripheral burner port of one or more of the sets of burner ports 224 a, 224 b, 224 c. It will be appreciated that the arrangement of bores can enhance heat transfer from central portions of a bank of burner ports. Therefore, material within the center portion of the burner face surface may be sufficiently protected from excessive temperature conditions that might otherwise occur with a large, unsegregated bank of burner ports. Although three sets of burner ports are illustrated, it is understood that one set or any number of sets of burner ports may be provided depending on the size of the burner port area.
- the fuel burner 220 may be provided with a supply line in communication with the inlet socket 242 and a return line in communication with the outlet socket 258 .
- the supply and return lines may also be placed in communication with a reservoir and a pump in a similar manner as described with respect to the fluid coolant system 40 above.
- fluid coolant can be pumped through the first inlet bore 244 along a supply fluid path 245 .
- the fluid circulates along path 247 defined by the second inlet bore 246 towards one of the transverse bores 248 a - d.
- the fluid then travels through one of the transverse bores 248 a - d and into the second outlet bore 262 (see FIG. 14 ).
- the fluid travels along path 263 defined by the second outlet bore 262 towards the first outlet bore 260 .
- the fluid then travels through the first outlet bore 260 along fluid path 261 .
- the return line then carries the heated coolant fluid back to the reservoir as described with respect to the fluid coolant system 40 above.
- the fuel burner 220 also includes fuel inlet fitting 270 defining a conduit 272 adapted to provide a path for a fuel and oxidizer mixture.
- the fuel burner 220 can also be provided with various mixing devices adapted to promote more thorough mixing of the fuel and oxidizer within the fuel burner.
- the fuel burner 220 can comprise a mixing device 280 comprising a flow divider 282 adapted to divide an upstream flow 284 into at least two downstream flows 286 a, 286 b.
- the flow divider 282 divides the upstream flow 284 into four downstream flows radially offset equal distances from one another.
- the downstream flows (e.g., 286 a, 286 b ) each take an angular turn of approximately 90 degrees with respect to the upstream flow such that each pair of downstream flows travel in substantially opposite directions.
- the angular turn can also be from about 90 degrees to about 180 degrees. In further examples, the angular turn may be less than 90 degrees.
- the fuel burner 220 can also be provided with an apparatus adapted to prevent flashback 290 .
- the apparatus 290 can be constructed in a similar manner and operates in a similar fashion as the apparatus 90 described above. As shown, the apparatus 290 can include plates 292 with apertures that can be substantially identical to the plates 92 described above.
- the fuel burners described above are designed to be supplied with a fuel and oxidizer mixture.
- Various fuels may be used for the present invention to obtain a sufficiently high flame temperature.
- the fuel may comprise natural gas, hydrogen, methane, ethane, propane, butane, or other fuel and combinations thereof.
- the oxidizer can a mixture of nitrogen and oxygen (e.g., air), a mixture of oxygen and another gas, pure oxygen, oxygen enriched air, or other gases containing sufficient amounts of oxygen as the oxidizer, or the like.
- the proportion of fuel to oxidizer may also vary to provide desirable flame characteristics, from fuel rich to one that is oxygen rich.
- the fluid comprises water or a water-based mixture to change the boiling point.
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Abstract
Description
- This application claims priority of U.S. Application No. 60/713533, filed on Sep. 1, 2005, which patent application is fully incorporated herein by reference.
- The present invention relates fuel burners, for example, fuel burners for use during various material processing procedures.
- Conventional burners are frequently used to heat objects for processing materials. When carrying out the process, the burner must be effective to apply heat while maintaining sufficient clearance to avoid contamination of the material and/or burner. There is a continuing need for functional burner designs that operate to transfer heat during various material processing procedures.
- In accordance with one aspect, a fuel burner comprises a body including at least one burner port. The body is fabricated from a material having a thermal conductivity greater than about 80 W/mK. The fuel burner further comprises a fluid coolant system for removing heat from the body. The fuel burner is capable of producing a flame having a temperature of at least about 2000° C.
- In accordance with another aspect, a fuel burner comprises a body including a cavity and at least one burner port in communication with the cavity. The fuel burner includes an apparatus positioned in the cavity and adapted to prevent flashback through the at least one burner port. The fuel mixture is adapted to pass through the apparatus, the cavity and the at least one burner port in use.
- In accordance with still another aspect, a fuel burner comprises a body including a cavity and at least one burner port in communication with the cavity. The fuel burner further includes a mixing device positioned in the cavity and adapted to mix a fuel and oxidizer prior to flowing through the at least one burner port. The mixing device defines a fluid path having a plurality of angular turns.
- In accordance with yet another aspect, a fuel burner comprises a body including a cavity and at least one burner port in communication with the cavity. The body is fabricated from a material having a thermal conductivity greater than about 80 W/mK. The fuel burner further includes an apparatus positioned in the cavity and adapted to prevent flashback through the at least one burner port. The fuel burner further comprises a fluid coolant system adapted to remove heat from the body. The fluid coolant system is adapted to prevent the body from melting in use.
- In accordance with a further aspect, a fuel burner comprises a body including a cavity and a plurality of burner ports in communication with the cavity. The body is fabricated from a material having a thermal conductivity greater than about 80 W/mK. The fuel burner further includes a mixing device positioned in the cavity and adapted to mix a fuel and oxidizer prior to flowing through the plurality of burner ports. The mixing device defines a fluid path having a plurality of angular turns. A fluid coolant system is also provided for removing heat from the body. The fuel burner is capable of producing a flame having a temperature of at least about 2000° C.
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FIG. 1 is a perspective view of a fuel burner in accordance with an exemplary embodiment of the present invention with portions broken away to depict interior portions of the fuel burner. -
FIG. 2 illustrates an exemplary fluid coolant path for the burner ofFIG. 1 . -
FIG. 3 is a top view of the fuel burner ofFIG. 1 . -
FIG. 4A is a sectional view alongline 4A-4A ofFIG. 3 . -
FIG. 4B is a sectional view alongline 4B-4B ofFIG. 3 . -
FIG. 5 is a sectional view along line 5-5 ofFIG. 3 . -
FIG. 6 is a sectional view along line 6-6 ofFIG. 3 . -
FIG. 7 is an exploded view of the fuel burner ofFIG. 1 . -
FIG. 8 is a perspective view of a fuel burner in accordance with another exemplary embodiment of the present invention. -
FIG. 9 is an exploded view of the fuel burner ofFIG. 8 . -
FIG. 10 is a perspective view of a fuel burner in accordance with another exemplary embodiment of the present invention. -
FIG. 11 is a top view of the fuel burner ofFIG. 10 . -
FIG. 12 is a sectional view along line 12-12 ofFIG. 11 . -
FIG. 13 is a sectional view along line 13-13 ofFIG. 11 . -
FIG. 14 is a sectional view along line 14-1 ofFIG. 11 . - Certain terminology is used herein for convenience only and is not to be taken as a limitation on the present invention. Further, in the drawings, the same reference numerals are employed for designating the same elements. Also as used herein, approximating language may be applied to modify any quantitative representation that may vary without resulting in a change in the basic function to which it is related. Accordingly, a value modified by a term or terms, such as “about” and “substantially,” may not to be limited to the precise value specified, in some cases. In at least some instances, the approximating language may correspond to the precision of an instrument for measuring the value.
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FIG. 1 depicts a perspective view of anexemplary fuel burner 20 in accordance with aspects of the present invention.FIG. 1 further depicts portions of thefuel burner 20 are shown broken away to depict interior areas of the fuel burner. The fuel burner includes abody 22 with at least one burner port. Although a single burner port may be used, the illustrated embodiments depict the at least one burner port comprising a plurality ofburner ports 24. Although any number of ports may be used, exemplary embodiments include at least 100 burner ports. Burner ports of each embodiment of the present invention may comprise various shapes and may be arranged in various patterns to control the burner flame characteristics and/or heat loading within the burner body. As shown inFIG. 1 , thebody 22 may include aburner face surface 26 including openings of theburner ports 24. Aperipheral surface 28 can circumscribe theburner face surface 26 and achamfer surface 30 can extend between at least a portion of theburner face surface 26 and theperipheral surface 28. As shown, thechamfer surface 30 can extend about the entire periphery of the fuel burner. Theoptional chamfer surface 30 may facilitate air movement from a location behind the burner surface to help release the flame from theburner face surface 26. - The body of fuel burners in accordance with the various embodiments of the present invention can comprise a one-piece member or may be assembled from a plurality of body portions. As shown in
FIG. 1 , for example, thebody 22 can include acentral portion 22 a, afirst end portion 22 b and asecond end portion 22 c. - In each fuel burner described throughout this application, portions of the body can comprise a wide variety of materials while incorporating aspects of the present invention. For example, the body of exemplary fuel burners may comprise a material having a thermal conductivity that is greater than about 80 W/mK. The body of further fuel burners may comprise a material having a thermal conductivity greater than about 100 W/mK. Still further, the body of additional fuel burners may comprise a material having a thermal conductivity greater than about 120 W/mK. Exemplary body portions of each fuel burner described herein may be formed from a variety of materials including, but not limited to, one or more of aluminum, copper, tungstein, iron, gold and/or nickel or the like. Composites, alloys, coatings and/or other various material characteristics or types may also be used to provide a body with satisfactory thermal performance. Further aspects of the invention may be practiced with a body or a portion of a body having a lower thermal conductivity. For example, further fuel burners may include a body or portions of a body formed from a material having a thermal conductivity that is less than 80 W/mK. In one embodiment, the fuel burners may include a body or portions of a body having a thermal conductivity that is less than 80 W/mK, but having a coating layer comprising a material having a thermal conductivity that is greater than about 80 W/mK.
- Exemplary fuel burners of each embodiment of the present invention may include a fluid coolant system to remove heat from the fuel burner body. The fluid coolant system may allow use of materials that might otherwise degrade under temperature conditions that exceed the melting point of the material. Moreover, using materials with a higher thermal conductivity (e.g., greater than about 80 W/mK) can more efficiently conduct heat through the body for removal by the fluid circulating in the fluid coolant system, if provided.
- Coolant systems may be provided as a separate component of the fuel burner or may be integrated with the fuel burner body. As shown in the figures, the
coolant system 40 may be integrated with thefuel burner body 22. The fluid coolant system may also include various alternative fluid paths through thebody 22 of the fuel burner.FIGS. 1, 2 , 4A and 4B depict an exemplary fluid path for a fluid coolant system in accordance with exemplary embodiments of the present invention. - As shown in
FIG. 4A , thecentral portion 22 a may be provided with aninlet socket 42 configured to receive in inlet fitting (not shown) of the fluid coolant system. Thecentral portion 22 a of thebody 22 is also provided with a first lower horizontal bore 44 in fluid communication with theinlet socket 42. Thesecond end portion 22 c of thebody 22 is provided with a firstvertical bore 46 in fluid communication with the first lowerhorizontal bore 44. Thecentral portion 22 a of thebody 22 is also provided with a first upper horizontal bore 48. The first upper horizontal bore 48 is placed in fluid communication with the firstvertical bore 46 and atransverse bore 50 formed in thefirst end portion 22 b of thebody 22. - As shown in
FIG. 4B , thecentral portion 22 a can also include a second upper horizontal bore 52 providing fluid communication between thetransverse bore 50 and a secondvertical bore 54 defined in thesecond end portion 22 c. Thecentral portion 22 a can further include a second lower horizontal bore 56 providing fluid communication between the secondvertical bore 54 and an outlet socket 58. The outlet socket 58 is configured to receive an outlet fitting (not shown) of the fluid coolant system. Seals, such as an O-rings 45, can be provided at interfaces between thecentral portion 22 a and eachend portion body 22. The first and secondvertical bores respective plug - With reference to
FIG. 2 , thefluid coolant system 40 can include asupply line 41 a providing a conduit for fluid to travel from afluid reservoir 49 to theinlet socket 42. Thefluid coolant system 40 can further include areturn line 41 b providing a conduit for fluid to travel from the outlet socket 58 back to thefluid reservoir 49. The supply line and/or return line may also comprise afluid pump 43 adapted to cause fluid to circulate through the coolant circuit. For example, as shown inFIGS. 2 and 4 A, thepump 43 may cause fluid to circulate alongpath 42 a while entering theinlet socket 42. Next, the fluid circulates alongpath 44 a while passing through the first lowerhorizontal bore 44. The fluid then circulates vertically alongpath 46 a while passing through the firstvertical bore 46. As shown inFIGS. 2, 4A and 4B, the fluid then circulates about theburner ports 24 alongcirculation paths bores FIGS. 2 and 4 B, the fluid then circulates vertically alongpath 54 a while passing through the secondvertical bore 54. The fluid then circulates horizontally alongpath 56 a while passing through the second lower horizontal bore 54 prior to exiting through the outlet socket 58. The thermally loaded fluid stream then passes through thereturn line 41 b and dumped into thefluid reservoir 49. The size of thefluid reservoir 49 may permit the reservoir to act as a heat sink. Alternatively, a refrigeration or other cooling arrangement (not shown) may remove heat from thefluid reservoir 49. - As shown in
FIGS. 1 and 2 , theupper paths burner ports 24. It will be appreciated that substantially circumscribing the burner ports can facilitate heat removal from the body away from the burner face of the body. The fluid paths can also be located in close proximity to one or more burner ports to increase the rate of heat removal from the burner port area. For example, as shown inFIG. 6 , the U-shaped coolant passage can be positioned a distance “d” from a peripheral burner port. In exemplary embodiments, the distance “d” can be less than about 1 centimeter although other distances may be incorporated in further embodiments of the present invention. - Forming the fuel burner with a body fabricated from a material having a thermal conductivity greater than about 80 W/mK in combination with a fluid coolant system can produce flames having enhanced flame characteristics without damaging the body of the fuel burner. For example, such fuel burners can produce a flame having a temperature of at least about 2000° C. to sufficiently heat materials during various material processing procedures. In one embodiment, the flame temperature is at least 2400° C. In a second embodiment, a flame temperature of at least 2600° C. In a third embodiment, a flame temperature of at least 2800° C.
- The fuel burners of the invention can also have enhanced power output. In exemplary embodiments, fuel burners may have a power output of greater than about 75 KW although fuel burners may be designed with other power output levels. In one embodiment, the fuel burners have a controllable power output of greater than 100 KW. In a second embodiment, the fuel burners have a controllable power output of greater than 120 KW. In a third embodiment, the fuel burners have a controllable power output of greater than 150 KW. In a fourth embodiment, the fuel burners have a controllable power output of greater than 500 KW.
- Still further, fuel burners of the present invention can be designed to produce a flame having a laminar flow portion with a length of at least about 5 centimeters. Increasing the length of the laminar flow portion of the flame can provide sufficient clearance between the material being processed and the fuel burner while reducing the power loss as the flame propagates toward the material being processed. Still further, fuel burners of the present invention can be designed to produce a flame adapted to operate with an average flow velocity of a fuel mixture through the at least one burner port of less than about 40 n/s. In this regard, the average flow velocity is the volume flow rate of the fuel and oxidizer mixture divided by the area of the burner ports through which the mixture is flowing. Providing an average flow velocity that is less than about 40 m/s can reduce turbulent flow that can otherwise lead to inefficiencies of heat loss to the surrounding environment.
- To further enhance the flame characteristics, each embodiment of the invention described and illustrated herein may include a mixing device adapted to more thoroughly mix a fuel and an oxidizer prior to flowing through the at least one burner port of the fuel burner. If provided, the mixing device defines a fluid path having a plurality of angular turns. Mixing devices in accordance with the present invention can define a plurality of angular turns in a wide variety of ways. Providing angular turns in the fluid path is believed to promote further mixing of the fuel and oxidizer as the fluid mixture propagates through the fuel burner. The angular turns may be gradual; however, abrupt angular turns are believed to provide more thorough mixing of the fuel and oxidizer. The fluid path direction can change through various angles to promote mixing of the fluid. For example, the fluid path may have at least one angular turn of at least 90 degrees. In further examples, the fluid path can have at least one angular turn of from about 90 degrees to about 180 degrees. In further examples, the fluid path may have at least one angular turn of less than 90 degrees.
- The mixing device, if provided, may include various features adapted to promote mixing of the fuel and oxidizer within the fuel burner. For example, the mixing device can include one or more flow dividers. The flow divider, if provided, is adapted to divide an upstream flow into at least two downstream flows. Although not required, the two downstream flows can each take an angular turn of approximately 90 degrees such that the two downstream flows travel in substantially opposite directions. The divided fuel flow streams can be subsequently recombined to provide a shuffling effect for more thorough mixing of the fuel and oxidizer.
- Flow dividers, if provided, can comprise a variety of shapes and configurations to selectively divide an upstream fluid flow into at least two downstream fluid flows. For example, the flow divider can divide the flow as it passes through and/or around the flow divider. In the illustrated embodiment, the
fuel burner 20 includes a first flow divider comprising afirst plate 62 and a second flow divider comprising asecond plate 64. Thesecond plate 64 is offset from thefirst plate 62 in a direction toward theburner ports 24. Thefirst plate 62 can comprise at least one aperture to selectively allow fluid communication through thefirst plate 62. To facilitate flow division, thesecond plate 64 can include a plurality of apertures greater in number than the aperture(s) of thefirst plate 62. For example, as shown, thefirst plate 62 comprises first andsecond apertures second plate 64 comprises fourapertures second plate 64 are not aligned with any aperture of thefirst plate 62 to encourage a desired flow division between the downstream apertures. - As shown in
FIG. 5 , the anupstream flow path 72 enters through aninlet socket 69. Theupstream flow path 72 then divides into twodownstream flow paths respective apertures first flow divider 62. The fuel and oxidizer mixture flowing alongpath 74 is then further divided into two additionaldownstream flow paths 78, 80 traveling in substantially opposite directions towardrespective apertures second flow divider 64. Likewise, the fuel and oxidizer mixture flowing alongpath 76 is further divided into two additionaldownstream flow paths respective apertures second flow divider 64. - As further shown in
FIGS. 5 and 6 , the mixingdevice 60 can include athird flow divider 66. Thethird flow divider 66 is adapted to divide a flow of fuel into two paths that travel about a peripheral edge of the flow divider. For example, thethird flow divider 66 can comprise a plate having opposed peripheral edges 68 (seeFIG. 7 ). As shown inFIG. 6 , eachedge 68 is adapted to cooperate with thebody 22 to define a pair offlow channels 70 that permit each of the downstream flows 78, 80, 82, 84 to be further divided into twoadditional flow paths third flow divider 66. - Fuel burners in accordance with aspects of the present invention can also include an
optional apparatus 90 positioned within acavity 91 of the fuel burner and adapted to prevent flashback through the at least oneburner port 24. Once installed, the fuel mixture is adapted to pass through theapparatus 90, thecavity 91 and the at least oneburner port 24 in use. In conventional burners, flashback might result from uneven flow through the burner ports. A relatively low fuel/oxygen flow through one burner port may allow the flame to propagate back through the corresponding burner port. As a result, the fuel and oxidizer mixture within the cavity may combust. Combustion of the fuel and oxidizer mixture within the cavity can interfere with the burner performance and can potentially lead to a dangerous explosion. Theoptional apparatus 90 may function to more evenly distribute the fuel and oxidizer mixture to travel at substantially the same velocity through each of the plurality of burner ports. With equal velocity passage through the burner ports, the probability of flashback through one of the burner ports may be reduced. - Apparatus adapted to prevent flashback can comprise a wide range of structures within the cavity of the fuel burner. For example, the apparatus can comprise a member extending across the cavity wherein the member includes a plurality of passages to allow passage of the fuel and oxidizer mixture. The member can comprise a mesh, fabric or other member adapted to provide a uniform fluid flow.
- In the illustrated embodiment, the member comprises a
plate 92 with a plurality of passages extending through the plate.FIGS. 1 and 7 depict theplate 92 including severalexemplary apertures 94. It is understood that theentire plate 92 can include the aperture pattern illustrated inFIGS. 1 and 7 . The apertures can be substantially evenly distributed along the entire surface area of the plate to encourage uniform flow through substantially the entire surface area of the plate. Although the apparatus may also comprise a single plate, further exemplary apparatus can include two or more plates that are offset from one another in a direction toward the burner ports. - For example, as shown, the
apparatus 90 comprises threeplates 92 that are offset from one another in a direction toward theburner ports 24. Theplates 92 are shown as identical however it is contemplated that the plates may have different aperture patterns. For example, the density of the apertures may increase from one plate to the next in a direction toward the burner ports. - Assembly of the burner is now described with reference to
FIG. 7 . As shown, thefirst plate 62 and thesecond plate 64 are inserted withinslots 32 formed along the length of thecentral portion 22 a of thebody 22. Thethird plate 66 is then inserted withinslots 34 also formed along the length of thecentral portion 22 a. Enlarged ends 66 b of thethird plate 66 are dimensioned to substantially match theslots 34 such that the reducedcentral portion 66 a of thethird plate 66 forms thechannel 70 as previously described. The threeplates 92 of theapparatus 90 are then inserted within theslots 36 formed along the length of thecentral portion 22 a. Threaded inserts 96 are positioned within bores 98 to facilitate threaded engagement withbolts 99. The lower seals 45 are positioned withinseats 38 defined in thecentral portion 22 a of thebody 22 while upper seals are positioned withinseats 25 defined in the first andsecond end portions body 22. Thebolts 99 are then inserted throughrespective bores 23 defined in the end portions and threaded with a respective threadedinsert 96 to fasten theend portions central portion 22 a. -
FIGS. 8 and 9 depict afuel burner 120 in accordance with another exemplary embodiment of the present invention. As shown, thefuel burner 120 includes abody 122 with at least oneburner port 124. The body can be constructed from the same materials as thebody 22 of thefuel burner 20 discussed above. Moreover, thefuel burner 120 can cooperate with afluid coolant system 140 to provide desirable flame characteristics as also described with respect to thefuel burner 20 above. Thebody 122 includes afront portion 122 a and arear portion 122 b. Therear portion 122 b is provided with asupply line 141 a and areturn line 141 b. Thefront portion 122 a is provided with aperipheral groove 129 that may be sealed by ashroud 127 to define a circumferentialfluid path 146 in communication with thesupply line 141 a and thereturn line 141 b. As shown, the circumferentialfluid path 146 forms a substantial C-shaped coolant passage that circumscribes a substantial portion of the at least oneburner port 124. The C-shaped coolant passage can be positioned such that it is positioned less than about 1 centimeter from a peripheral burner port of the plurality ofburner ports 124. - The
shroud 127 also includes aperipheral surface 128 that circumscribes aburner face surface 126. Achamfer surface 130 can extend between at least a portion of theburner face surface 126 and theperipheral surface 128. Thechamfer surface 130 can facilitate air movement from a location behind the burner surface to help release the flame from theburner face surface 126. - The
rear portion 122 b is further provided with afuel line 132 adapted to provide the burner with a fuel and oxidizer mixture. Thefuel burner 120 may also be provided with asupplemental line 134 defining aninternal conduit 135. Theinternal conduit 135 is adapted to communicate with acentral aperture 125 by way of afunnel 138. Additives may be introduced throughinternal conduit 135 to pass through anaperture 139 of thefunnel 138 and out thecentral aperture 125 in theburner face surface 126. Various additives may pass through thecentral aperture 125 to impact flame characteristics and/or to provide a coating to the material being processed. - Examples of additives that can be added to the fuel included detergents, stabilizers, metal-deactivators, (ashless) dispersants, anti-oxidants, cold flow improvers, anti-corrosion, biocides, lubricity enhancers, dehazers, antistatic agents, foam reducers, etc.
- In order to assemble the
fuel burner 120, thesupplemental line 134 is attached to therear portion 122 b of thebody 122 such that theinternal conduit 135 is in communication with an interior area of thefunnel 138.Seals 145 are then placed within seats (not shown) in the back of thefront portion 122 a and then the rear portion, together with thesupplemental line 134, is positioned with respect to thefront portion 122 a of thehousing 122. Once appropriately positioned,bolts 199 are passed throughrespective bores 123 in therear portion 122 b and screwed into threaded inserts (not shown) provided in bores (not shown) in the back of thefront portion 122 a. Theshroud 127 is then attached with respect to thefront portion 122 a of thehousing 122. Once attached, theshroud 127 cooperates with theperipheral groove 129 to define the circumferentialfluid path 146. Although not shown, the fuel burner may comprise an apparatus positioned within a cavity of thebody 122 to prevent flashback through the at least oneburner port 124 such that the fuel mixture is adapted to pass through the apparatus, the cavity and the at least one burner port in use. Furthermore, although not shown, the fuel burner may comprise a mixing device positioned within the cavity and adapted to mix a fuel and oxidizer prior to flowing through the at least oneburner port 124. The mixing device, if provided, defines a fluid path having a plurality of angular turns. - In use, the
supply line 141 a and thereturn line 141 b may be placed in communication with a reservoir and a pump in a similar manner as described with respect to thefluid coolant system 40 discussed above. Once activated, fluid coolant travels along afluid supply path 148, about the circumferentialfluid path 146, and then along afluid return path 150. While activated, the fluid coolant system can provide a cooling function for thebody 122 of the fuel burner 120 A fuel and oxidizer mixture may also be provided by way of thefuel line 132. The fuel and oxidizer mixture passes through a cavity within thehousing 122 and then out through theburner ports 124. Although not shown, the fuel and oxidizer mixture may pass through a mixing device and/or an apparatus to prevent flashback located within the cavity prior to exiting through the at least oneburner port 124. Still further, additive may also pass through theinternal conduit 135, thefunnel 138 and theaperture 125 in theburner face surface 126 of thefuel burner 120. -
FIGS. 10-14 depict afuel burner 220 in accordance with a further exemplary embodiment of the present invention. As shown, thefuel burner 220 includes abody 222 with at least oneburner port 224. The body can be constructed from the same materials as thebody 22 of thefuel burner 20 discussed above. Moreover, thefuel burner 220 can cooperate with afluid coolant system 240 to provide desirable flame characteristics as also described with respect to thefuel burner 20 above. - The
body 222 can include aburner face 226 including openings of theburner ports 224. Aperipheral surface 228 can circumscribe theburner face surface 226 and achamfer surface 230 can extend between at least a portion of theburner face surface 226 and theperipheral surface 228. Theoptional chamfer surface 230 may facilitate air movement from a location behind the burner face surface to help release the flame from thesurface 226. - The
body 222 can comprise a one-piece member or may be assembled from a plurality of body portions. As shown inFIG. 10 , for example, thebody 222 can include acentral portion 222 a, afirst end portion 222 b and asecond end portion 222 c. As shown, the first andsecond end portions central portion 222 a by way ofbolts 229. - The
fuel burner 220 can also comprise afluid coolant system 240. As shown inFIG. 12 , portions of the fluid coolant system extend through thesecond end portion 222 c of thebody 222. For example, thesecond end portion 222 c can be provided with aninlet socket 242 in communication with an first inlet bore 244. Thesecond end portion 222 c can further include a second inlet bore 246 in fluid communication with the first inlet bore 244. - Likewise, portions of the
fluid coolant system 240 extend through thefirst end portion 222 b of thebody 222. For example, with reference toFIG. 14 , thefirst end portion 222 b can be provided with anoutlet socket 258 in communication with a first outlet bore 260. Thefirst end portion 222 b can further include a second outlet bore 262 in fluid communication with the first outlet bore 260. The second outlet bore 262 and the second inlet bore 246 are substantially parallel with respect to one another and extend along respective outer peripheral portions of thefuel burner 220. - As further shown in
FIG. 13 , portions of thefluid coolant system 240 can also extend through thecentral portion 222 a. For example, thecentral portion 222 a can include a firsttransverse bore 248 a, a secondtransverse bore 248 b, a thirdtransverse bore 248 c, and a fourthtransverse bore 248 d. Each transverse bore is in fluid communication with the second inlet bore 246 defined in thesecond end portion 222 c and the second outlet bore 262 defined in thefirst end portion 222 b. The transverse bores 248 a-d are substantially parallel with respect to one another and offset from one another to allow thefluid coolant system 240 to circumscribe sets of burner ports. For example, the first and second transverse bores 248 a, 248 b extend substantially parallel with respect to one another between the second inlet and outlet bores 246, 262 to circumscribe a first set ofburner ports 224 a. The second and thirdtransverse bores burner ports 224 b. Further, the third and fourth transverse bores 248 c, 248 d extend substantially parallel with respect to one another between the second inlet and outlet bores 246, 262 to circumscribe a third set ofburner ports 224 c. As shown inFIG. 13 , the secondtransverse bore 248 b extends through aportion 223 a of the body that extends between the first and second sets ofburner ports transverse bore 248 c extends through anotherportion 223 b of the body that extends between the second and third sets ofburner ports - One or more of the second inlet and outlet bores and/or transverse bores may be positioned less than about 1 centimeter from a peripheral burner port of one or more of the sets of
burner ports - In use, the
fuel burner 220 may be provided with a supply line in communication with theinlet socket 242 and a return line in communication with theoutlet socket 258. The supply and return lines may also be placed in communication with a reservoir and a pump in a similar manner as described with respect to thefluid coolant system 40 above. As shown inFIG. 12 , fluid coolant can be pumped through the first inlet bore 244 along asupply fluid path 245. Next, the fluid circulates alongpath 247 defined by the second inlet bore 246 towards one of the transverse bores 248 a-d. The fluid then travels through one of the transverse bores 248 a-d and into the second outlet bore 262 (seeFIG. 14 ). Next, the fluid travels alongpath 263 defined by the second outlet bore 262 towards the first outlet bore 260. The fluid then travels through the first outlet bore 260 alongfluid path 261. The return line then carries the heated coolant fluid back to the reservoir as described with respect to thefluid coolant system 40 above. - The
fuel burner 220 also includes fuel inlet fitting 270 defining aconduit 272 adapted to provide a path for a fuel and oxidizer mixture. Thefuel burner 220 can also be provided with various mixing devices adapted to promote more thorough mixing of the fuel and oxidizer within the fuel burner. For example, as shown inFIG. 13 , thefuel burner 220 can comprise amixing device 280 comprising aflow divider 282 adapted to divide anupstream flow 284 into at least twodownstream flows flow divider 282 divides theupstream flow 284 into four downstream flows radially offset equal distances from one another. As shown, the downstream flows (e.g., 286 a, 286 b) each take an angular turn of approximately 90 degrees with respect to the upstream flow such that each pair of downstream flows travel in substantially opposite directions. The angular turn can also be from about 90 degrees to about 180 degrees. In further examples, the angular turn may be less than 90 degrees. - The
fuel burner 220 can also be provided with an apparatus adapted to preventflashback 290. Theapparatus 290 can be constructed in a similar manner and operates in a similar fashion as theapparatus 90 described above. As shown, theapparatus 290 can includeplates 292 with apertures that can be substantially identical to theplates 92 described above. - The fuel burners described above are designed to be supplied with a fuel and oxidizer mixture. Various fuels may be used for the present invention to obtain a sufficiently high flame temperature. For example, the fuel may comprise natural gas, hydrogen, methane, ethane, propane, butane, or other fuel and combinations thereof. The oxidizer can a mixture of nitrogen and oxygen (e.g., air), a mixture of oxygen and another gas, pure oxygen, oxygen enriched air, or other gases containing sufficient amounts of oxygen as the oxidizer, or the like. The proportion of fuel to oxidizer may also vary to provide desirable flame characteristics, from fuel rich to one that is oxygen rich.
- Various coolant fluids may be incorporated in the fluid coolant systems discussed above. In one example, the fluid comprises water or a water-based mixture to change the boiling point.
- From the above description of the invention, those skilled in the art will perceive improvements, changes and modifications. Such improvements, changes and modifications within the skill of the art are intended to be covered by the appended claims. All citations referred herein are incorporated by reference.
Claims (27)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/294,073 US20070048685A1 (en) | 2005-09-01 | 2005-12-05 | Fuel burner |
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US71353305P | 2005-09-01 | 2005-09-01 | |
US11/294,073 US20070048685A1 (en) | 2005-09-01 | 2005-12-05 | Fuel burner |
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US20070048685A1 true US20070048685A1 (en) | 2007-03-01 |
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US11/294,073 Abandoned US20070048685A1 (en) | 2005-09-01 | 2005-12-05 | Fuel burner |
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US20150102117A1 (en) * | 2013-10-14 | 2015-04-16 | Eberspächer Climate Control Systems GmbH & Co. KG | Combustion chamber assembly unit for a vaporizing burner |
US20150140461A1 (en) * | 2013-11-15 | 2015-05-21 | Delphi Technologies, Inc. | Method of operating a heater |
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US20160230984A1 (en) * | 2013-09-23 | 2016-08-11 | Clearsign Combustion Corporation | Burner system employing multiple perforated flame holders, and method of operation |
US20160238242A1 (en) * | 2015-02-18 | 2016-08-18 | Clearsign Combustion Corporation | Burner with a perforated flame holder support structure |
US9476283B2 (en) | 2014-04-10 | 2016-10-25 | Delphi Technologies, Inc. | Geothermic heater system |
US9494024B2 (en) | 2013-08-29 | 2016-11-15 | Delphi Technologies, Inc. | Heater and method of operating |
US9520601B2 (en) | 2013-08-29 | 2016-12-13 | Delphi Technologies, Inc. | Heater and method of operating |
US9559379B2 (en) | 2015-03-19 | 2017-01-31 | Delphi Technologies, Inc. | Heater |
US9640829B2 (en) | 2013-12-06 | 2017-05-02 | Delphi Technologies, Inc. | Heater and method of operating |
US9647291B2 (en) | 2013-08-29 | 2017-05-09 | Delphi Technologies, Inc. | Heater and supporting structure thereof |
US9698434B2 (en) | 2013-08-29 | 2017-07-04 | Delphi Technologies, Inc. | Heater |
US10113403B2 (en) | 2013-08-29 | 2018-10-30 | Delphi Technologies, Inc. | Heater and method of operating |
US10125979B2 (en) | 2013-05-10 | 2018-11-13 | Clearsign Combustion Corporation | Combustion system and method for electrically assisted start-up |
US10151176B2 (en) | 2015-04-07 | 2018-12-11 | Aptiv Technologies Limited | Heater and supporting structure thereof |
CN113614448A (en) * | 2019-03-26 | 2021-11-05 | 乔治洛德方法研究和开发液化空气有限公司 | Compact flame curtain burner |
US11313553B2 (en) | 2016-01-13 | 2022-04-26 | Clearsign Technologies Corporation | Plug and play burner |
WO2023078949A1 (en) * | 2021-11-04 | 2023-05-11 | Bekaert Combustion Technology B.V. | Premix gas burner |
Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3612738A (en) * | 1970-01-12 | 1971-10-12 | Air Prod & Chem | Metallurgical burner |
US4021188A (en) * | 1973-03-12 | 1977-05-03 | Tokyo Gas Company Limited | Burner configurations for staged combustion |
US4193773A (en) * | 1976-09-23 | 1980-03-18 | Shell Internationale Research Maatschappij B.V. | Process for the partial combustion of pulverized coal |
US4397631A (en) * | 1980-09-08 | 1983-08-09 | The Carlin Company | Pre-mix forced draft power gas burner |
US4457704A (en) * | 1981-04-03 | 1984-07-03 | Ruhrgas Aktiengesellschaft | Method for the operation of a gas burner exposed to an air current as well as burners to implement the method |
US5057008A (en) * | 1988-07-26 | 1991-10-15 | Maxon International N.V. | Line burner |
US5062788A (en) * | 1989-01-10 | 1991-11-05 | Haden-Schweitzer Corporation | High efficiency linear gas burner assembly |
US5497943A (en) * | 1993-03-29 | 1996-03-12 | L'air Liquide Societe Anoneyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Oxygen cutting torch with a liquid oxygen jet |
US5851246A (en) * | 1992-05-07 | 1998-12-22 | Hylsa, S.A. De C.V. | Apparatus for gasifying organic materials |
US5879148A (en) * | 1993-03-19 | 1999-03-09 | The Regents Of The University Of California | Mechanical swirler for a low-NOx, weak-swirl burner |
US5975887A (en) * | 1997-01-24 | 1999-11-02 | Gordon-Piatt Energy Group, Inc. | Compact hi-spin gas burner assembly |
US5993200A (en) * | 1995-06-15 | 1999-11-30 | British Gas Plc. | Fuel fired burners |
US6254940B1 (en) * | 1996-07-11 | 2001-07-03 | University Of Cincinnati | Electrically assisted synthesis of particles and film with precisely controlled characteristic |
US6331109B1 (en) * | 1999-07-22 | 2001-12-18 | Alstom (Switzerland) Ltd. | Premix burner |
US6659762B2 (en) * | 2001-09-17 | 2003-12-09 | L'air Liquide - Societe Anonyme A' Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Oxygen-fuel burner with adjustable flame characteristics |
US20040048216A1 (en) * | 2000-07-19 | 2004-03-11 | Brown Simon Denzil | Gas burner |
US6705117B2 (en) * | 1999-08-16 | 2004-03-16 | The Boc Group, Inc. | Method of heating a glass melting furnace using a roof mounted, staged combustion oxygen-fuel burner |
US6708527B1 (en) * | 2001-08-14 | 2004-03-23 | Praxair Technology, Inc. | Glass feeder operated with oxy-gas combustion |
US6715319B2 (en) * | 2001-03-23 | 2004-04-06 | Pilkington Plc | Melting of glass |
US6916175B2 (en) * | 2002-10-22 | 2005-07-12 | Kyungdong Boiler Co., Ltd. | Combustion gas burner enabling multi-stage control |
US6918759B2 (en) * | 2002-10-22 | 2005-07-19 | Kyungdong Boiler Co., Ltd. | Premixed combustion gas burner having separated fire hole units |
-
2005
- 2005-12-05 US US11/294,073 patent/US20070048685A1/en not_active Abandoned
Patent Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3612738A (en) * | 1970-01-12 | 1971-10-12 | Air Prod & Chem | Metallurgical burner |
US4021188A (en) * | 1973-03-12 | 1977-05-03 | Tokyo Gas Company Limited | Burner configurations for staged combustion |
US4193773A (en) * | 1976-09-23 | 1980-03-18 | Shell Internationale Research Maatschappij B.V. | Process for the partial combustion of pulverized coal |
US4397631A (en) * | 1980-09-08 | 1983-08-09 | The Carlin Company | Pre-mix forced draft power gas burner |
US4457704A (en) * | 1981-04-03 | 1984-07-03 | Ruhrgas Aktiengesellschaft | Method for the operation of a gas burner exposed to an air current as well as burners to implement the method |
US5057008A (en) * | 1988-07-26 | 1991-10-15 | Maxon International N.V. | Line burner |
US5062788A (en) * | 1989-01-10 | 1991-11-05 | Haden-Schweitzer Corporation | High efficiency linear gas burner assembly |
US5851246A (en) * | 1992-05-07 | 1998-12-22 | Hylsa, S.A. De C.V. | Apparatus for gasifying organic materials |
US5879148A (en) * | 1993-03-19 | 1999-03-09 | The Regents Of The University Of California | Mechanical swirler for a low-NOx, weak-swirl burner |
US5497943A (en) * | 1993-03-29 | 1996-03-12 | L'air Liquide Societe Anoneyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Oxygen cutting torch with a liquid oxygen jet |
US5993200A (en) * | 1995-06-15 | 1999-11-30 | British Gas Plc. | Fuel fired burners |
US6254940B1 (en) * | 1996-07-11 | 2001-07-03 | University Of Cincinnati | Electrically assisted synthesis of particles and film with precisely controlled characteristic |
US5975887A (en) * | 1997-01-24 | 1999-11-02 | Gordon-Piatt Energy Group, Inc. | Compact hi-spin gas burner assembly |
US6331109B1 (en) * | 1999-07-22 | 2001-12-18 | Alstom (Switzerland) Ltd. | Premix burner |
US6705117B2 (en) * | 1999-08-16 | 2004-03-16 | The Boc Group, Inc. | Method of heating a glass melting furnace using a roof mounted, staged combustion oxygen-fuel burner |
US20040048216A1 (en) * | 2000-07-19 | 2004-03-11 | Brown Simon Denzil | Gas burner |
US6715319B2 (en) * | 2001-03-23 | 2004-04-06 | Pilkington Plc | Melting of glass |
US6708527B1 (en) * | 2001-08-14 | 2004-03-23 | Praxair Technology, Inc. | Glass feeder operated with oxy-gas combustion |
US6659762B2 (en) * | 2001-09-17 | 2003-12-09 | L'air Liquide - Societe Anonyme A' Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Oxygen-fuel burner with adjustable flame characteristics |
US6916175B2 (en) * | 2002-10-22 | 2005-07-12 | Kyungdong Boiler Co., Ltd. | Combustion gas burner enabling multi-stage control |
US6918759B2 (en) * | 2002-10-22 | 2005-07-19 | Kyungdong Boiler Co., Ltd. | Premixed combustion gas burner having separated fire hole units |
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US10125979B2 (en) | 2013-05-10 | 2018-11-13 | Clearsign Combustion Corporation | Combustion system and method for electrically assisted start-up |
US9647291B2 (en) | 2013-08-29 | 2017-05-09 | Delphi Technologies, Inc. | Heater and supporting structure thereof |
US10113403B2 (en) | 2013-08-29 | 2018-10-30 | Delphi Technologies, Inc. | Heater and method of operating |
US9698434B2 (en) | 2013-08-29 | 2017-07-04 | Delphi Technologies, Inc. | Heater |
US9494024B2 (en) | 2013-08-29 | 2016-11-15 | Delphi Technologies, Inc. | Heater and method of operating |
US9520601B2 (en) | 2013-08-29 | 2016-12-13 | Delphi Technologies, Inc. | Heater and method of operating |
US10066833B2 (en) * | 2013-09-23 | 2018-09-04 | Clearsign Combustion Corporation | Burner system employing multiple perforated flame holders, and method of operation |
US20160230984A1 (en) * | 2013-09-23 | 2016-08-11 | Clearsign Combustion Corporation | Burner system employing multiple perforated flame holders, and method of operation |
US9897311B2 (en) * | 2013-10-14 | 2018-02-20 | Eberspächer Climate Control Systems GmbH & Co. KG | Combustion chamber assembly unit for a vaporizing burner |
US20150102117A1 (en) * | 2013-10-14 | 2015-04-16 | Eberspächer Climate Control Systems GmbH & Co. KG | Combustion chamber assembly unit for a vaporizing burner |
US9531020B2 (en) * | 2013-11-15 | 2016-12-27 | Delphi Technologies, Inc. | Method of operating a heater |
US20150140461A1 (en) * | 2013-11-15 | 2015-05-21 | Delphi Technologies, Inc. | Method of operating a heater |
US9379394B2 (en) | 2013-11-15 | 2016-06-28 | Delphi Technologies, Inc. | Heater with a fuel cell stack assembly and a combustor and method of operating |
US9640829B2 (en) | 2013-12-06 | 2017-05-02 | Delphi Technologies, Inc. | Heater and method of operating |
US9328596B2 (en) | 2014-01-21 | 2016-05-03 | Delphi Technologies, Inc. | Heater and method of operating |
US9476283B2 (en) | 2014-04-10 | 2016-10-25 | Delphi Technologies, Inc. | Geothermic heater system |
US20160238242A1 (en) * | 2015-02-18 | 2016-08-18 | Clearsign Combustion Corporation | Burner with a perforated flame holder support structure |
US9559379B2 (en) | 2015-03-19 | 2017-01-31 | Delphi Technologies, Inc. | Heater |
US10151176B2 (en) | 2015-04-07 | 2018-12-11 | Aptiv Technologies Limited | Heater and supporting structure thereof |
US11313553B2 (en) | 2016-01-13 | 2022-04-26 | Clearsign Technologies Corporation | Plug and play burner |
US11953199B2 (en) | 2016-01-13 | 2024-04-09 | ClearSign Technologies Coporation | Burner and burner system with flange mount |
CN113614448A (en) * | 2019-03-26 | 2021-11-05 | 乔治洛德方法研究和开发液化空气有限公司 | Compact flame curtain burner |
US20220120438A1 (en) * | 2019-03-26 | 2022-04-21 | L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procedés Georges Claude | Compact flame-curtain burner |
WO2023078949A1 (en) * | 2021-11-04 | 2023-05-11 | Bekaert Combustion Technology B.V. | Premix gas burner |
NL2029630B1 (en) * | 2021-11-04 | 2023-06-02 | Bekaert Combustion Tech Bv | Premix gas burner |
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