EP2484974A2 - Brenner mit einem gegen hohe Betriebstemperaturen resistenten Diffusor - Google Patents

Brenner mit einem gegen hohe Betriebstemperaturen resistenten Diffusor Download PDF

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Publication number
EP2484974A2
EP2484974A2 EP12166859A EP12166859A EP2484974A2 EP 2484974 A2 EP2484974 A2 EP 2484974A2 EP 12166859 A EP12166859 A EP 12166859A EP 12166859 A EP12166859 A EP 12166859A EP 2484974 A2 EP2484974 A2 EP 2484974A2
Authority
EP
European Patent Office
Prior art keywords
burner
diffuser
face
openings
elements
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.)
Withdrawn
Application number
EP12166859A
Other languages
English (en)
French (fr)
Other versions
EP2484974A3 (de
Inventor
Massimo Giloli
Massimo Dotti
Gunther Berthold
Stephanus Wijkmans
Giuseppe Fogliani
Renzo Vecchi
Wenzel Mach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beckett Thermal Solutions SRL
Original Assignee
Worgas Bruciatori SRL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from IT000180A external-priority patent/ITMO20030180A1/it
Priority claimed from ITMO20040031 external-priority patent/ITMO20040031A1/it
Application filed by Worgas Bruciatori SRL filed Critical Worgas Bruciatori SRL
Publication of EP2484974A2 publication Critical patent/EP2484974A2/de
Publication of EP2484974A3 publication Critical patent/EP2484974A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • 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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • 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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/045—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with a plurality of burner bars assembled together, e.g. in a grid-like arrangement

Definitions

  • the present invention relates to a burner, in particular to a premixed burner with a diffuser resistant to high temperatures.
  • EP0774623 describes a burner for use in a gas-fired burner device, comprising a housing at least partly covered by a burner deck provided with outflow openings for allowing, during use, the passage of a gas or gas/air mixture from the inside of the housing to the environment, with the circumferential edges of the burner deck being retained so as to be movable relative to the housing, wherein the burner deck comprises a series of burner deck parts arranged next to each other, which burner deck parts each comprise a row of outflow openings in communication with the inside of the housing, while between burner deck parts arranged next to each other bridges are included which are fixedly connected with the housing, in which bridges the proximal edges of the burner deck parts connecting thereto are movably retained, the arrangement being such that during use each burner deck part can deform at least in the plane of the burner deck part in question, independently of the other burner deck parts the housing and the bridges.
  • EP0679838 describes a gas burner that consists of a distribution chamber to receive air and a combustible gas, partially delimited by a thin perforated panel which acts as a burner bar.
  • the distribution chamber has an upper end with a series of feed apertures facing the perforated panel, while the perforated zones of the latter are not situated directly in line with some of the apertures.
  • the offset perforated sections are curved, with convex sides facing towards the distribution chamber and located between its feed apertures. Apart from the curved sections, the perforated panel is generally flat, and the gas feed apertures in the distribution chamber, which are set in a plane parallel to the perforated panel, are connected to feed ducts in the form of Venturi tubes fed by individual nozzles.
  • JP58035314 describes a combustor comprising a box type combustion section, an inner combustion wall which is provided with a plurality of small holes, and is formed into a U shape, to an outer combustion wall which is provided with holes of middle size in its infrared wall part A, and with holes of small size in its lower part.
  • the upper part of an outer combustion wall is bent to make a combustion lid, and an inner wall is provided to the back of an inner combustion wall, with its upper plate being combined with the combustion lid.
  • An outer wall, jointed with a heatproof glass is disposed in front of an outer combustion wall.
  • a gas feeder body which is provided with gas injecting ports is fitted to the lower part of a box type combustion section by the intermediary of projecting parts.
  • One object of the present invention is to provide a burner suitable for operating at high operating temperatures that is highly resistant to thermal stress without special materials being required to make the diffuser, which is simple and relatively cheap to build.
  • a burner is provided that is suppliable with a mixture of air and fuel, comprising a burner body provided with a diffuser in which openings are made for the passage and subsequent combustion of said mixture, said diffuser being divided into a plurality of diffuser elements that are adjacent to one another, each diffuser element being at least partially free to expand in at least one direction characterized in that said diffuser element has a box structure comprising a first face intended to be turned towards the outside of the burner whereupon said openings are made for the evacuation of said mixture, and a second face opposite said first face, intended to be turned towards the inside of the burner wherein further openings are made for the passage of said mixture, said second face acting as a distributing element of the flow of said mixture.
  • the diffuser divided into a plurality of elements adjacent to one another, partially free to expand in at least one direction, has resistance to thermal stress that is significantly greater than is the case with a monobloc diffuser inasmuch as the heat expansions that occurs during burner operation on each diffuser element, induced by said temperature variations, is noticeably reduced, with a consequent noticeable reduction of deformation and of the mechanical stress induced by it.
  • each diffuser element has a shape that is such as to give it great mechanical rigidity.
  • rigidity-varying means is provided that is suitable for diminishing the rigidity of the diffuser element in a direction parallel to its greater dimension.
  • FIG 1 shows, overall, a burner according to the invention, comprising a base element 2, with for example the shape of a flange, and a head element 3, with for example the shape of a bottom, between which a diffuser 4 is arranged and fixed consisting of a plurality of diffuser elements 5, arranged as a cylindrical envelope configuration.
  • Each diffuser element 5 ( Figure 4 ) has a U-shaped cross section, with a first wall 7 of each diffuser element 5 that has a substantially rectangular shape and is turned towards the outside of the burner 1; on the wall 7 openings 6 are made for the passage of the mixture of air and fuel delivered inside the burner 1.
  • the diffuser element 5 furthermore comprises two side walls 8 connected to the two greater opposite sides of the first wall 7 and placed in an approximately radial direction and two front walls 14, only one of which is visible in Figure 4 , connected to the lesser sides of the first wall 7 and approximately perpendicular thereto.
  • a flow-distributing element 9 can be arranged, consisting, for example, of a plate 10 ( Figure 8 ), on which holes 11 are distributed for the passage of the mixture of air and fuel.
  • the plate 10 is furthermore provided, on two sides that are opposite each other, with respective bumps 13, which act as spacers to keep the plate 10 at a distance from the wall 7.
  • the flow-distributing elements 9 can be inserted inside the diffuser elements 5 by resting them against pairs of support rods 12.
  • the holes 15 have shapes and dimensions such as to couple with play with the rods 12 in such a way that the latter do not hinder heat expansion of the diffuser element 5.
  • the rods 12 also act as fixing means of the diffuser element 5 to the base element 2 and to the head element 3 of the burner 1.
  • the diffuser elements 5 can be coupled with the base element 2 and with the head element 3 of the burner 1 by inserting the ends of the diffuser elements into suitable seats made in the base element 2 and in the head element 3, respectively.
  • the dimensions of the seats are chosen in such a way as to enable coupling with play of the diffuser elements 5, in such a way as not to hinder heat expansion.
  • FIG 3 shows a version 1a of the burner 1 shown in Figures 1 and 2 .
  • This burner 1a is substantially obtained by connecting together a first burner body 17 that is substantially identical to the burner 1 and a second burner body 18 aligned on a straight axis.
  • the first burner body 17 comprises a flange-shaped base element 2 and a head element 19, with a substantially annular shape, between which a first diffuser 4a is arranged and fixed consisting of a plurality of diffuser elements 5, arranged as a cylindrical envelope configuration.
  • the second burner body 18 comprises a base element 19a, with a shape similar to the head element 19 of the first burner body 17 and connected to it, and a head element 3, with a substantially circular shape, between which a second diffuser 4b is arranged and fixed also consisting of a plurality of diffuser elements 5, arranged as a cylindrical envelope configuration.
  • FIGS 5 , 6 , 7 show a further embodiment of a burner 20 according to the invention, consisting of a substantially rectangular frame 21 with a peripheral flange 22, which is also substantially rectangular, inside which a row of diffuser elements 5 is arranged that are alongside one another to form a diffuser 25 having a substantially flat surface.
  • the support rods 12 transversely in relation to the diffuser elements 5, passing through holes 16 made in the side walls 8 of each diffuser element 5 and further holes made on pairs of opposite sides 24 of the frame 21.
  • the rods 12, by passing through the different adjacent diffuser elements 5, and the pairs of opposite sides 24, also act as connecting elements connecting the diffuser elements 5 together and with the frame 21.
  • the rods 12 are coupled with play with the holes 16 and with the further holes made on the opposite sides 24 in such a way as not to hinder heat expansion of the diffuser elements 5.
  • the diffuser elements 5 can be provided inside the frame 21 seats that are suitable for receiving and holding in place opposite ends of the diffuser elements 5. Coupling between the diffuser elements 5 and the seats occurs with play in such a way that heat expansion of the diffuser elements 5 is not hindered.
  • FIG 9 shows a yet further embodiment of a burner 25 according to the invention, similar to the burner 20 shown in Figures 5 , 6 , 7 , from which it differs only inasmuch as inside the substantially rectangular frame 21 a double row of diffuser elements 5 is arranged.
  • the diffuser elements 5 of the two rows are arranged in such a way as to be able to expand in a substantially free manner due to the effect of the temperature variations to which they are subjected during burner operation 25.
  • FIGs 10 to 12 show a second embodiment of a diffuser element 26 of a burner according to the invention.
  • This diffuser element 26 has a box-shaped body, which gives it great flexional rigidity.
  • the diffuser element shown in Figures 10, 11 has a row of slits 6, bordered by two double rows of holes 27.
  • a second face 29, opposite the first face 28 and intended to be turned towards the inside of the burner, is provided with a series of openings 31, for example in the shape of holes, distributed along the second face 29.
  • This second face 29 acts as a distributor of the flow of mixture delivered into the burner.
  • the diffuser element 26 is then integrated with a mixture-flow-distributing element, which enables considerable cost savings and saving of assembly time of the burner according to the invention.
  • a central incision 30 may be made that extends along the entire length of the face, parallel to the greater sides thereof. This incision 30 is used to considerably reduce the value of the mechanical stress occurring on the diffuser element 26 due to the temperature variations to which it is subjected during burner operation. This is because the presence of the incision 30 enables the diffuser element 26 to expand in a substantially free manner in a perpendicular direction to the incision 30.
  • Figures 13 and 14 show a third embodiment of a diffuser element 26a and a fourth embodiment of a diffuser element 26b according to the invention.
  • the diffuser elements 26a are 26b are similar to the diffuser element 26 from which they differ by the shape of the openings made on the second face 29.
  • the diffuser element 26a has on the second face 29 rows of openings consisting of slits 32 alternating with holes 33 whilst the diffuser element 26a has on the second face 29 rows of slits 34, staggered between themselves.
  • Figures 15 and 16 show a fifth embodiment of a diffuser element 26c, similar to the diffuser element 26, from which it differs by the fact that at the ends of the first face 28 it has projections 35, turned towards the inside of the element 26. These projections 35 are used to make coupling of the diffuser elements 26c with the flange 2 and the bottom 3 of the burner quicker and easier.
  • Figure 17 shows a version 26d of the diffuser element 26c that has projections 35a that are similar to the projections 35 but are turned towards the outside of the diffuser element 26d.
  • FIG 18 shows a version 9a of the distributing element 9 shown in Figures 7 and 8 .
  • the distributing element 9a differs from the distributing element 9 inasmuch as the bumps 13 are replaced by end protrusions 36 of the body 10, which also act as spacers.
  • Figure 19 shows a sixth embodiment of a diffuser element 37 with a U-shaped cross section with a first face 38 intended to be turned towards the outside of the burner, and a second and third face 39, 40, that are substantially perpendicular to the first face 38 and are intended to be turned towards the inside of the burner.
  • On the face 38 openings 41, 42 are made for the passage of the mixture of air and fuel.
  • the openings 41, 42 may have the shape of slits 41 and of holes 42.
  • the diffuser element 37 shown in Figure 19 is provided on the first face 38 with two rows of slits 41 that are parallel to each other between which a plurality of holes 42 is arranged.
  • further slits 43 may be made that extend along the entire width of the zone of the face 38 on which the slits 41 and the holes 42 are located. These further slits 43, in addition to acting as openings for the passage of the mixture, enable the face 38 to absorb heat expansion without being subjected to excessive mechanical stress generated by such expansion.
  • the diffuser element 37 is particularly suitable for making a burner with a substantially flat diffuser, like the ones shown in Figures 5 and 9 .
  • Figure 20 shows a seventh embodiment of a diffuser element 44.
  • This diffuser element 44 integrated with a flow-distributing element, has a similar shape to the diffuser elements shown in Figures 10 to 17 and on its first face 28 has the same opening distribution of the diffuser element 37, including the further slits 43.
  • Figure 21 shows an enlarged view of a version 43a of the further slits 43, which have widenings 45 at the respective ends to reduce the risk of concentrations of mechanical stress due to the heat expansion that occurs during burner operation.
  • FIGS 22, 22a, 23 show an eighth embodiment of a diffuser element 46 according to the invention.
  • the diffuser element 46 has a box structure, with a first convex face 47 intended to be turned towards the outside of the burner and having the shape of a cylindrical surface sector and a second concave face 48 intended to be turned towards the inside of the burner and also having the shape of a cylindrical surface sector.
  • the two faces 47 and 48 being joined by curved lengths 49, 50.
  • openings 51, 52, 53 are made for the passage of the mixture of air and fuel.
  • the openings 51, 52 may have the shape of slits 51 and of holes 52.
  • the diffuser element 46 shown in Figures 22, 22a, 23 is provided on the first face 47 with two rows of slits 51 that are parallel to one another between which a plurality of holes 52 is arranged.
  • further slits 53 can be arranged that extend along the entire width of the zone of the first face 47 on which the slits 51 and the holes 52 are located.
  • a series of openings 54 is made, for example in the shape of holes, distributed along the second face 48.
  • This second face 48 acts as a distributor of the flow of mixture delivered into the burner.
  • the diffuser element 46 is then integrated with a mixture-flow-distributing element, which enables significant savings to be made both in terms of manufacturing costs and assembly time of the burner according to the invention.
  • a central incision 55 can be made that extends along the entire length of the face, parallel to the greater sides thereof.
  • This incision 55 significantly reduces the value of the mechanical stress that occurs on the diffuser element 46 because of the temperature variations to which it is subjected during burner operation. This is because the presence of the incision 55 enables the diffuser element 46 to expand in a substantially free manner in a direction that is perpendicular to the incision 55.
  • projections 56 are made that make coupling of the diffuser elements 46 with the flange 2 and the bottom 3 of the burner 1 faster and easier.
  • the projections 56 can be pointed to the outside of the diffuser element 46, or towards the inside thereof.
  • Figures 24 and 25 show a ninth embodiment of a diffuser element 57 according to the invention similar to the diffuser element 46 shown in Figures 22, 22a, 23 .
  • the diffuser element 57 differs from the diffuser element 46 inasmuch as the walls 58, 59 that connect the first face 47 and the second face 48 are shaped in such a way as to be shapingly coupled with the walls of adjacent diffuser elements 57.
  • FIGS 26, 27 and 28 show a tenth embodiment of a diffuser element 60 according to the invention.
  • the diffuser element 60 has a U-shaped cross section with a first face 61 intended to be turned towards the outside of the burner, and a second and third face 62, 63 that are substantially perpendicular to the first face 61 and are intended to be turned towards the inside of the burner.
  • openings 51, 52, 53 are made that have a shape and distribution that are similar to the corresponding openings made on the first face 47 of the diffuser elements 46 and 57 disclosed above.
  • the second and third face 62 and 63 are respectively joined at their free ends with a second distributing element 64 that also has a U-shaped cross section with a first face 65 substantially parallel to the first face 61 of the diffuser element 60 and a second and third face, respectively 66 and 67, substantially parallel to the second face 62 and to the third face 63, respectively of the diffuser element 60.
  • openings 68 are made for the passage and the distribution of the flow of the mixture of air and fuel.
  • a central incision 69 can be made, extending along the entire length of the face 65, parallel to the greater sides thereof.
  • This incision 69 has functions that are completely similar to those of the incision 55 of the diffuser elements 46 and 57 disclosed previously.
  • Figures 29, 30, 31 show an eleventh embodiment of a diffuser element 70, having a substantially open box shape, with a top face 71 intended to be turned towards the outside of the burner, two front faces 72, that are substantially perpendicular to the lesser sides of the top face 71 and two side faces 73, 74 that are substantially perpendicular to the greater sides of the top face 71.
  • the side faces 73, 74 are shaped in such a way as to be shapingly coupled with the corresponding side faces of adjacent diffuser elements 70. This type of coupling minimises the risk of spillage of mixture between the walls of adjacent diffuser elements 70, thus increasing burner efficiency.
  • openings 51, 52, 53 are made that have a shape and distribution similar to the corresponding openings already disclosed with reference to the diffuser elements 46, 57, 60.
  • Figures 32 to 36 show a twelfth embodiment of a diffuser element 75 according to the invention.
  • This diffuser element 75 has an open box shape similar to that of the diffuser element 70, with a top face 76 intended to be turned towards the outside of the burner, two front faces 77, 78, that are substantially perpendicular to the lesser sides of the top face 76 and two side faces 79, 80, that are substantially perpendicular to the greater sides of the top face 76.
  • openings 81, 82, 83 are made for the evacuation of the mixture of air and fuel.
  • the openings 81 have the shape of slits arranged in traverse rows staggered between themselves in a central zone of the top face 76; the openings 82 have the shape of holes arranged in traverse rows staggered between themselves, in two side zones of the top face 76.
  • the openings 83 are traverse slits that extend along the entire width of the top face 76 and continue for a short length, at both their ends on the side walls 79 and 80.
  • the slits 83 have widenings 84 at both their ends.
  • the slits 83 In addition to acting as openings for the passage of the mixture, the slits 83 also enable the top face 76 to absorb heat expansion without being subjected to excessive mechanical stress generated by the heat expansion. Furthermore, the widenings 84 enable the risk of concentrations of mechanical stress caused by the heat expansion to be reduced, thereby increasing the resistance of the diffuser element 75 to the thermal stress that occurs during burner operation.
  • a flow-distributing element 85 ( Figures 35, 36 ) can be arranged that for example comprises a plate 86 on which holes 87 are distributed for the passage of the mixture of air and fuel.
  • the plate 86 is provided with end protrusions 88 having a spacer function for maintaining the flow-distributing element 85 distanced from the top face 76 of the diffuser element 75.
  • Figures 37, 38 and 39 show a thirteenth embodiment of a diffuser element 89 according to the invention.
  • This diffuser element 89 has a shape that is very similar to that of the diffuser element 75, shown in Figures 32, 33, 34 and differs therefrom only in terms of the shape and distribution of the openings 90, 91 made in the top face 76 for the evacuation of the mixture of air and fuel with which the burner is supplied.
  • openings 90, 91 have the shape of slits and are distributed on staggered traverse rows that are located alternately on the entire width of the top face 76 of the diffuser element 89.
  • the end slits 91 of the rows of slits that are located on the entire width of the top face 76 continue for a short length on the side faces 79 and 80 and terminate on the faces with a widening 92.
  • the function of the end slits 91 and of the widening 92 is very similar to the function of the slits 83 with the respective widenings 84, disclosed with reference to the diffuser element 75 shown in Figures 32, 33, 34 .
  • a flow-distributing element 85 ( Figures 40 and 41 ) can be arranged inside each diffuser element 89 .
  • Figures 42 and 43 show a fourteenth embodiment of a diffuser element 93 according to the invention.
  • the diffuser element 93 has a shape that is very similar to that of the diffuser elements 75 and 89 disclosed previously.
  • openings 94, 95, 96 are made for the passage of the mixture of air and fuel.
  • the openings 94 have the shape of slits, distributed on two traverse rows that are parallel to each other, between which a plurality of rows of holes 95 is arranged.
  • further slits 96 are arranged that extend along the entire width of the top face 76 and continue for a short length at the respective ends on the side faces 79 and 80.
  • the ends of each further slit 96 have a widening 97.
  • Figures 44 and 45 disclose a fifteenth embodiment of a diffuser element 98 according to the invention, similar to the diffuser element 93 shown in Figures 42 and 43 .
  • the further slits 96 terminate at their respective ends, on the side walls 79 and 80, with a length of L-shaped slit 99 that in turn terminates with a widening 100.
  • this length of slit 99 and of the respective widening 100 is to further reduce the risk of concentrations of mechanical stress, which could be generated by the heat expansion to which the diffuser element 98 is subjected during burner operation.
  • Figures 46 to 49 show assembly of a diffuser element 46 in a burner with a cylindrical envelope diffuser as for example shown in Figure 1 .
  • the base element 2 and the head element 3 of the burner are respectively equipped with annular internally hollow protrusions 101, 102 with U-shaped sections, in which the ends of the diffuser elements 46 can be inserted.
  • the front walls, 103 and 104 respectively, of the annular protrusions 101 and 102 are provided at regular intervals with projections 105 suitable for coupling with the projections 56 made in the ends of the diffuser elements 46 to fix in position each diffuser element 46 and prevent it from being able to undergo shifts during burner operation.
  • projections 105 suitable for coupling with the projections 56 made in the ends of the diffuser elements 46 to fix in position each diffuser element 46 and prevent it from being able to undergo shifts during burner operation.
  • the presence of projections 105 that are coupleable with the projections 56 of the diffuser element 46 makes the assembly of the burner diffuser very quick and easy.
  • Figures 50 and 51 show a sixteenth embodiment of a diffuser element 106 according to the invention having a substantially triangular plan shape with a top face 107 in which openings 108, 108a are made for the evacuation of the mixture of air and fuel, side walls 109 and front wall 110.
  • the openings 108, 108a may have the shape of rows of slits 108 alternating with rows of holes 108a.
  • Figure 51 shows two diffuser elements 106, brought up to form a portion of burner diffuser.
  • Figure 52 shows a burner 111 the diffuser of which is made with the diffuser elements 106 shown in Figures 50 and 51 .
  • the burner 111 is provided with a cylindrical body 112, one of the bases of which forms a diffuser 113 made with the diffuser elements 106.
  • the burner is provided with a tube 114 for conveying the mixture of air and fuel to the burner body 112.
  • Figure 53 shows a portion of a burner 115, the body 116 of which has a hollow cylindrical shape, the internal surface of which forms the diffuser 117 of the burner, made with diffuser elements according to the invention, for example diffuser elements 60 according to the tenth embodiment of the diffuser elements.
  • Figure 54 shows a cylindrical burner 118 according to the invention, similar to the burner shown in Figure 1 , wherein the diffuser 119 is made with a plurality of diffuser elements according to the invention, for example diffuser elements 46, 57, or 60 according to the eighth, ninth and tenth embodiments respectively.
  • Figures 55 and 56 show a first version of the diffuser element 5 shown in Figure 4 .
  • the diffuser element 5 is provided on its front faces 14 with respective tabs 120 obtained by punching the front faces 14.
  • the tabs 120 are used to secure and hold in position a distributing element 85 inserted in the diffuser element 5.
  • the tabs 120 are bent towards the inside of the diffuser element 5 in such a way as to interfere with the distributing element 85 in such a way as to secure it and keep it in position as shown in Figure 56 .
  • Figures 57 and 58 show a second version of the diffuser element 5 shown in Figure 4 .
  • the diffuser element 5 is provided with respective recesses 121 on its front faces 14.
  • the recesses 121 are used to secure and hold in position a distributing element 85a inserted in the diffuser element 5.
  • the flow-distributing element 85a is similar to the flow-distributing element 85 and differs from it by the presence on the plate 86a of a plurality of traverse projections 122, that are substantially parallel to one another, the function of which is to act as spacers, to keep the flow-distributing element 85a at a distance from the top face 7 of the diffuser element 5.
  • the recesses 121 of the front faces 14 secure and maintain in position the distributing element 85a, as shown in Figure 58 .
  • Figures 59 and 60 show a system of fitting of a diffuser element 5 in a burner 20 like the one shown in Figure 5 .
  • the walls 24 of the substantially rectangular frame 21 of the burner 20, parallel to the front faces 14 of the diffuser element 5, are provided with recesses 123 positioned in such a way as to keep the diffuser element 5 in position after the latter has been placed in position in the substantially rectangular frame 21, as shown in Figure 60 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
EP12166859.4A 2003-06-19 2004-06-18 Brenner mit einem gegen hohe Betriebstemperaturen resistenten Diffusor Withdrawn EP2484974A3 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT000180A ITMO20030180A1 (it) 2003-06-19 2003-06-19 Bruciatore con diffusore resistente ad alte temperature di esercizio
ITMO20040031 ITMO20040031A1 (it) 2004-02-11 2004-02-11 Bruciatore con diffusore ad alte temperature di esercizio
EP04740081A EP1634018B1 (de) 2003-06-19 2004-06-18 Brenner mit einem gegen hohe betriebstemperaturen beständigen diffusor

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP04740081.7 Division 2004-06-18
EP04740081A Division EP1634018B1 (de) 2003-06-19 2004-06-18 Brenner mit einem gegen hohe betriebstemperaturen beständigen diffusor

Publications (2)

Publication Number Publication Date
EP2484974A2 true EP2484974A2 (de) 2012-08-08
EP2484974A3 EP2484974A3 (de) 2014-08-27

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EP12166859.4A Withdrawn EP2484974A3 (de) 2003-06-19 2004-06-18 Brenner mit einem gegen hohe Betriebstemperaturen resistenten Diffusor
EP04740081A Expired - Lifetime EP1634018B1 (de) 2003-06-19 2004-06-18 Brenner mit einem gegen hohe betriebstemperaturen beständigen diffusor

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EP04740081A Expired - Lifetime EP1634018B1 (de) 2003-06-19 2004-06-18 Brenner mit einem gegen hohe betriebstemperaturen beständigen diffusor

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WO (1) WO2004111536A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMO20040277A1 (it) * 2004-10-22 2005-01-22 Worgas Bruciatori Srl Bruciatore con diffusore resistente ad alte temperature di esercizio.
ITMI20060147A1 (it) * 2006-01-27 2007-07-28 Worgas Bruciatori Srl Dispositivo bruciatore a potenza elevata
ITMO20060419A1 (it) * 2006-12-22 2008-06-23 Worgas Bruciatori Srl Bruciatore con diffusore resistente ad alte temperature di esercizio
ITMI20071751A1 (it) 2007-09-12 2009-03-13 Polidoro S P A Bruciatore premiscelato

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835314B2 (ja) 1979-04-17 1983-08-02 富士電機株式会社 車両の軸数計測回路
EP0474008A1 (de) 1990-08-30 1992-03-11 MERCK PATENT GmbH Aminosäurederivate
EP0679838A1 (de) 1994-04-29 1995-11-02 Chaffoteaux Et Maury Verbesserungen an Gasbrennern
EP0774623A1 (de) 1995-11-17 1997-05-21 Dejatech B.V. Aus Segmenten aufgebaute Brenneraustrittsfläche

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835314A (ja) * 1981-08-26 1983-03-02 Matsushita Electric Ind Co Ltd 燃焼器
DE8914388U1 (de) * 1988-12-21 1990-01-25 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Flächenbrenner
IT1254668B (it) * 1992-03-06 1995-09-28 Giorgio Scanferla Bruciatore a gas di tipo atmosferico per apparecchi scalda-acqua in particolare del tipo cosiddetto istantaneo

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835314B2 (ja) 1979-04-17 1983-08-02 富士電機株式会社 車両の軸数計測回路
EP0474008A1 (de) 1990-08-30 1992-03-11 MERCK PATENT GmbH Aminosäurederivate
EP0679838A1 (de) 1994-04-29 1995-11-02 Chaffoteaux Et Maury Verbesserungen an Gasbrennern
EP0774623A1 (de) 1995-11-17 1997-05-21 Dejatech B.V. Aus Segmenten aufgebaute Brenneraustrittsfläche

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EP1634018A1 (de) 2006-03-15
EP1634018B1 (de) 2012-08-01
EP2484974A3 (de) 2014-08-27
WO2004111536A1 (en) 2004-12-23

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