EP4416428B1 - Brennermembran für einen gasbrenner - Google Patents

Brennermembran für einen gasbrenner

Info

Publication number
EP4416428B1
EP4416428B1 EP22754527.4A EP22754527A EP4416428B1 EP 4416428 B1 EP4416428 B1 EP 4416428B1 EP 22754527 A EP22754527 A EP 22754527A EP 4416428 B1 EP4416428 B1 EP 4416428B1
Authority
EP
European Patent Office
Prior art keywords
floats
fabric
combustion
cluster
areas
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.)
Active
Application number
EP22754527.4A
Other languages
English (en)
French (fr)
Other versions
EP4416428A1 (de
EP4416428C0 (de
Inventor
Massimo Gilioli
Alberto PEZZIN
Andrea Casoni
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
Beckett Thermal Solutions 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
Application filed by Beckett Thermal Solutions SRL filed Critical Beckett Thermal Solutions SRL
Publication of EP4416428A1 publication Critical patent/EP4416428A1/de
Application granted granted Critical
Publication of EP4416428B1 publication Critical patent/EP4416428B1/de
Publication of EP4416428C0 publication Critical patent/EP4416428C0/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/004—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft with weave pattern being non-standard or providing special effects
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
    • D03D15/25—Metal
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/30—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the fibres or filaments
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/44—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific cross-section or surface shape
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/60—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the warp or weft elements other than yarns or threads
    • D03D15/67—Metal wires
    • 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
    • F23D14/10—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 elongated tubular burner head
    • 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
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/145—Radiant burners using screens or perforated plates combustion being stabilised at a screen or a perforated plate
    • 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
    • F23D14/84—Flame spreading or otherwise shaping
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/12—Threads containing metallic filaments or strips
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/101—Flame diffusing means characterised by surface shape
    • F23D2203/1012—Flame diffusing means characterised by surface shape tubular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/103—Flame diffusing means using screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/106—Assemblies of different layers
    • 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
    • F23D2212/201—Fibres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2213/00—Burner manufacture specifications

Definitions

  • the present invention relates to a combustion membrane for a burner, in particular for a completely or partially premixed burner, for example for boilers, swimming pool heaters, hot air generators, or ovens for industrial processes.
  • the term "gas” denotes both a “combustible gas” and a “mixture of combustible gas and combustion supporting air"
  • a distributor may be provided upstream of the diffuser layer (with reference to the flow direction of the gas) to distribute the gas in the desired manner towards the combustion membrane.
  • the known distributors are generally made as walls with a plurality of through openings, for example made of perforated metal sheet, and may form an "inner" layer of the combustion membrane or alternatively, a component which is spaced apart from the combustion membrane.
  • WO 2015/000869A1 , WO 2014/067744A1 describe burners having a burner deck which forms a closest state of the art for the present invention.
  • the heat generated by the combustion is directed by means of the hot combustion gases (convection) and by means of heat radiation to a heat exchanger to heat a fluid, e.g., water, which is then conveyed to a utility, for example a heating system of an industrial process, residential environments or the like and/or domestic water.
  • a fluid e.g., water
  • noise reduction accessories must be optimized on a case-by-case basis for the fluid dynamic, mechanical, dimensional, and combustion conditions of the individual burner model, and their efficacy is often limited to undesirably narrow (gas flow) operating ranges.
  • a combustion membrane for a gas burner has an inner side, to which combustible gas is conveyed, and an outer side, on which combustion of the combustible gas occurs after it has crossed through the combustion membrane, said combustion membrane comprising a fabric having two opposite fabric surfaces, which respectively form a combustion surface exposed on the outer side and an inner surface facing towards the inner side, wherein:
  • the gas burner 2 comprises:
  • the flat combustion membrane 14 can be substantially flat, e.g., planar or curved or convex, or however of non-tubular or non-cylindrical shape, and having a peripheral edge connected to the support housing wall 11 in flow communication with the inlet passage 12, as well as a perforation for the passage of the gas 13 or of the gas-air mixture from inside burner 2 to an outer side 17 of the combustion membrane 14 where the combustion occurs (combustion area 8).
  • the combustion membrane 14 has an inner side 18 to which a combustible gas 13 is conveyed and an outer side 17 on which the combustion of the combustible gas 13 occurs after it has crossed through the combustion membrane 14, said combustion membrane 14 comprising a fabric 21 having two opposite fabric surfaces 19, 20 which respectively form a combustion surface 19 exposed on the outer side 17 and an inner surface 20 facing towards the inner side 18, wherein the fabric 21 forms an interlacing of metal wires 22 comprising warp threads and weft threads transverse relative to the warp threads, said fabric 21 being made on a loom (unlike knitted cloths that are to be considered excluded from the definition of "fabric").
  • the fabric 21 is advantageously supported by and in contact with a support layer 38, e.g., a perforated metal sheet or wire mesh support, arranged on the inner side 18 of the combustion membrane 14 and forming part of the combustion membrane 14 itself or forming only a support structure for the combustion membrane 14.
  • a support layer 38 e.g., a perforated metal sheet or wire mesh support
  • the combustion membrane 14 can be a single-layer structure (including only the fabric 21) or a multilayer structure (containing at least the fabric 21 and the support layer 38 ( Figures 3, 3A ).
  • both fabric surfaces 19, 20 form ribs 23 in high relief alternating with valleys 24 in low relief
  • both the ribs 23 and the valleys 24 have an extension, in at least one direction in the plane of the fabric 21, greater than the space occupied by at least three consecutive warp threads in the weft direction and greater than the space occupied by at least three consecutive weft threads in the warp direction.
  • the metal fabric 21 of the combustion membrane 14 achieves a technical effect of discrete, repetitive but not continuous spacer, and the thickness of the fabric itself is not completely filled with metal material, which improves the thermal insulation capacity and allows a gas distribution through the metal fabric not only in the direction orthogonal to the plane of the fabric but also in the plane of the fabric itself.
  • the fabric 21 is permeable to gas and has localized first areas 26 with reduced permeability alternated with localized second areas 27 with higher permeability than the first areas 26.
  • both the first areas 26 and the second areas 27 have an extension, in at least one direction on the plane of the fabric 21, greater than the space occupied by at least three consecutive warp threads in the weft direction and greater than the space occupied by at least three consecutive weft threads in the warp direction.
  • the fabric 21 forms one or more floats 25, while at the second areas 27 the fabric forms areas free from floats or with floats shorter than the floats 25 in the first areas 26 (i.e., bridging passages of one warp/weft thread over a smaller number of consecutive warp/weft threads than the floats 25 in the first areas 26).
  • the metal wires 22 forming said floats 25 are locally enlarged with respect to a width of the metal wires 22 at the second areas 27.
  • the difference in gas permeability between first areas 26 and second areas 27 is e.g. visible and verifiable against the light as a difference in light transmission through the fabric 21.
  • the first localized areas 26 with reduced permeability alternating with the second localized areas 27 with higher permeability than the first localized areas 26 proved advantageous with reference to a reduction in the risk of flame detachment and with reference to a better distribution of gas flow velocity across the combustion membrane 14.
  • the fabric 21 forms a plurality of clusters 28 of floats 25 spaced from each other, preferably distributed at a uniform pitch in two directions (but not necessarily equal for the two directions) either transverse or orthogonal in the plane of fabric 21, each of said clusters 28 comprising:
  • the float clusters 28 form the localized first areas 26 with reduced permeability, and the extra-cluster areas 30 form the localized second areas 27 with higher permeability.
  • the first floats 25' of the same cluster 28 can have equal lengths and their ends can be aligned or staggered.
  • the second floats 25' of the same cluster 28 can have equal lengths and their ends can be aligned or staggered.
  • the first floats 25' of the same cluster 28 can have different lengths.
  • the second floats 25" of the same cluster 28 can have different lengths.
  • the length of the longest float 25 on the inner surface 20 is greater than the length of the longest float 25 on the combustion surface 19.
  • the longer floats of the cluster are arranged on the side of the fabric facing the inner side of the combustion membrane, while the shorter floats of the cluster are on the side of the fabric facing the outer (combustion) side of the combustion membrane. This effectively protects the longer float which would otherwise be too exposed and too poorly supported and stabilized.
  • the first floats 25' of the cluster 28 are precisely three and the second floats 25" of the same cluster 28 are precisely three.
  • the first floats 25' of the cluster 28 have a first central float 31' and two first lateral floats 32' on two opposite sides of the first central float 31' and a length shorter than the length of the first central float 31'.
  • the second floats 25" of the cluster 28 have a second central float 31" and two second lateral floats 32" on two opposite sides of the second central float 31" and having a length shorter than the length of the second central float 31" ( figure 6C , first floats 25' dashed, second floats 25" black).
  • the first floats 25' can be positioned and oriented mirror - symmetrically with respect to the second central float 31" (forming the mirror-symmetry line) of the same cluster 28.
  • the second floats 25" can be positioned and oriented mirror-symmetrical with respect to the first central float 31' (forming the mirror-symmetry line) of the same cluster 28.
  • the first central float 31' can have a length of 5 passes (five bypassed threads) and the first lateral floats 32' can have a length of 3 passes (three bypassed threads).
  • the second central float 31" can have a length of 5 passes (five bypassed threads) and the second lateral floats 32" can have a length of 3 passes (three bypassed threads).
  • the first floats 25' of the cluster 28 are precisely four and the second floats 25" of the same cluster are precisely two.
  • the first floats 25' of the cluster 28 all have the same length but are placed in a mutually staggered manner, such as in an alternating staggered manner, as shown in figure 4C (first floats 25' dashed, second floats 25" black).
  • the second floats 25" of the cluster 28 all have the same length but are positioned in a mutually staggered manner.
  • the first floats 25' can have a length of 3 passes (three bypassed threads) and the second floats 25" can have a length of 5 passes (five bypassed threads).
  • the first floats 25' of the cluster 28 are precisely three and the second floats 25" of the same cluster 28 are precisely two.
  • the first floats 25' of the cluster 28 all have the same length but are placed in a staggered manner with each other, preferably in an alternating staggered manner, as shown in figure 5C (first floats 25' black, second floats 25" dashed).
  • the second floats 25" of the cluster 28 have different lengths and are positioned symmetrically relative to a first central float 31' (symmetry-line) of the three first floats 25' of the cluster 28.
  • the first floats 25' can have a length of 3 passes (three bypassed threads) and the two second floats 25" can have, respectively, a length of 5 passes (five bypassed threads), and the other the length of three passes (three bypassed threads).
  • the fabric 21 may comprise a plurality of simple intersections 33 of floats, said intersections 33 comprising:
  • the first floats 25' of the cluster 28 are precisely eight and the second floats 25" of the same cluster 28 are precisely nine.
  • the second floats 25" of the cluster 28 are arranged in a staggered step-like manner defining as a whole a second strip 34" oblique to the orientation of the single second floats 25" and superimposed on the first oblique strip 34.
  • first clusters 28 there can be second clusters 35 of a different shape and location than the first clusters 28.
  • the first floats 25' of the second cluster 35 are precisely nine and the second floats 25" of the same cluster 35 are precisely six.
  • said first floats 25' of the second cluster 35 are arranged to form a further first strip 36 oblique relative to the orientation of the individual first floats 25' but preferably of a different shape from the shape of the first strip 34 of the first cluster 28, e.g., in a zigzag shape.
  • the second floats 25" of the second cluster 35 are arranged to form a further second strip 36' oblique relative to the orientation of the individual second floats 25", but preferably of a different shape from the shape of the second strip 34' of the first cluster 28, e.g., zigzag-shaped and superimposed on the further first oblique strip 36 ( Figures 7.1C and 7.2C ).
  • drawing in figure 7.1C shows the first floats 25' (in bold print) of the first clusters 28 and of the second clusters 35 on the surface of the fabric 21 facing towards the observer
  • drawing in figure 7.2C shows the first floats 25' (with solid contours) of the first clusters 28 and of the second clusters 35 on the surface of the fabric 21 facing toward the observer
  • the second floats 25" in bold print
  • the first clusters 28 and/or second clusters 35 may be arranged to define a plurality of sequences of clusters 28, 35 extended in the weft or warp direction of the fabric 21 and formed by strips 34, 36; 34', 36' oblique relative to the warp and weft directions.
  • the fabric 21 is a "heavy” or “coarse” fabric, i.e., a fabric with a weight per fabric area equal to or greater than 1.3 kg/m 2 or in the range from 1.3 kg/m 2 to 1.6 kg/m 2 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Woven Fabrics (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Claims (16)

  1. Brennermembran (14) für einen Gasbrenner (2), wobei die Brennermembran (14) eine Innenseite (18) aufweist, der ein Brenngas (13) zugeführt wird, und eine Außenseite (17), an der die Verbrennung des Brenngases (13) erfolgt, nachdem es die Brennermembran (14) gekreuzt hat, wobei die Brennermembran (14) ein Gewebe (21) umfasst, das zwei gegenüberliegende Gewebeoberflächen (19, 20) aufweist, die jeweils eine Verbrennungsoberfläche (19), die der Außenseite (17) ausgesetzt wird, und eine innere Oberfläche (20), die der Innenseite (18) zugewandt ist, bilden, wobei das Gewebe (21) ein Verflechten von Metalldrähten (22) bildet, die Kettfäden und Schussfäden umfassen, wobei sich die Schussfäden quer zu der Kettfädenrichtung erstrecken,
    dadurch gekennzeichnet, dass beide Gewebeoberflächen (19, 20) Rippen (23) in dem Hochvorsprung bilden, die mit Senkungen (24) in dem Niedervorsprung abwechseln, und dass sowohl die Rippen (23) als auch die Senkungen (24) eine Erstreckung in mindestens einer Richtung in der Ebene des Gewebes (21) aufweisen, die größer als der Raum ist, der von mindestens drei aufeinanderfolgenden Kettfäden in Schussrichtung belegte wird und größer als der Raum ist, der von mindestens drei aufeinanderfolgenden Schussfäden in Kettfädenrichtung belegt wird.
  2. Brennermembran (14) nach Anspruch 1, wobei
    - an den Rippen (23) mindestens eine der Gewebeoberflächen (19, 20) eine oder mehrere Flottungen (25) bildet,
    - an den Senkungen (24) mindestens eine der Gewebeoberflächen (19, 20) Bereiche bildet, die frei von Flottungen sind oder mit Flottungen versehen sind, die kürzer als die Flottungen in den Rippen (23) derselben Gewebeoberfläche (19, 20) sind.
  3. Brennermembran (14) nach einem der vorhergehenden Ansprüche, wobei das Gewebe (21) lokale begrenzte erste Bereiche (26) mit reduzierten Gasdurchlässigkeit aufweist, die sich mit lokalen begrenzten zweiten Bereichen (27) mit höherer Gasdurchlässigkeit im Vergleich zu den ersten Bereichen (26) abwechseln, wobei sowohl die ersten Bereiche (26) als auch die zweiten Bereiche (27) eine Erstreckung in mindestens einer Richtung in der Ebene des Gewebes (21) aufweisen, die größer als der Raum ist, der von mindestens drei aufeinanderfolgenden Kettfäden in Schussrichtung belegt wird und größer als der Raum ist, der von mindestens drei aufeinanderfolgenden Schussfäden in Kettfädenrichtung belegt wird,
    wobei:
    - in den ersten Bereichen (26) das Gewebe (21) eine oder mehrere Flottungen (25) bildet,
    - in den zweiten Bereichen (27) das Gewebe Bereiche bildet, die frei von Flottungen sind oder mit Flottungen versehen sind, die kürzer als die Flottungen (25) in den ersten Bereichen (26) sind.
  4. Brennermembran (14) nach Anspruch 3, wobei an den Flottungen (25) der ersten Bereiche (26) die Metalldrähte (22), die die Flottungen (25) bilden, lokal in Bezug auf eine Breite der Metalldrähte (22) in den zweiten Bereichen (27) vergrößert sind.
  5. Brennermembran (14) nach einem der Ansprüche 1 bis 4, wobei das Gewebe (21) eine Mehrzahl von Gruppen (28) von Flottungen (25) bildet, wobei die Gruppen (28) voneinander beabstandet sind und in zwei Querrichtungen in der Ebene des Gewebes (21) verteilt sind, jede der Gruppen (28) umfassend:
    - auf einer der Gewebeoberflächen (19, 20) mindestens drei oder mehrere parallele erste Flottungen (25'), die direkt nebeneinander liegen,
    - auf der anderen der Gewebeoberflächen (19, 20) mindestens zwei oder mehrere parallele zweite Flottungen (25"), die direkt nebeneinander liegen, wobei die zweiten Flottungen (25") quer in Bezug auf die Orientierung der ersten Flottungen (25') orientiert sind und auf die ersten Flottungen (25') mit mindestens sechs Schnittpunkten (29) zwischen den einzelnen ersten Flottungen (25') und den einzelnen zweiten Flottungen (25") der Gruppe (28) überlagert sind.
    - wobei die Gewebe zwischen zwei aufeinanderfolgenden Gruppen (28) jeweils Extragruppenbereiche (30) bildet, die frei von Flottungen (25, 25', 25") sind.
  6. Brennermembran (14) nach den Ansprüchen 3 und 5, wobei die Gruppen (28) die ersten lokalisierten Bereiche (26) mit reduzierter Durchlässigkeit bilden und die Extragruppenbereiche (30) die zweiten lokalisierten Bereiche (27) mit höherer Durchlässigkeit bilden.
  7. Brennermembran (14) nach Anspruch 5, wobei:
    - die ersten Flottungen (25') der Gruppe (28) eine erste Zentralflottung (31') und zwei erste Seitenflottungen (32') auf zwei gegenüberliegenden Seiten der ersten Zentralflottung (31') aufweisen und eine Länge aufweisen, die kürzer als die Länge der ersten Zentralflottung ist (31'),
    - die zweiten Flottungen (25") der Gruppe (28) eine zweiten Zentralflottung (31") und zwei zweite seitliche Seitenflottungen (32") auf zwei gegenüberliegenden Seiten der zweiten Zentralflottung (31") aufweisen und eine Länge aufweisen, die die kürzer als die Länge der zweiten Zentralflottung (31"),
    - die ersten Flottungen (25') spiegelbildlich zu der Symmetrielinie angeordnet und orientiert sind, die durch die zweite Zentralflottung (31") derselben Gruppe (28) gebildet wird,
    - die zweiten Flottungen (25") spiegelbildlich zu der Symmetrielinie angeordnet und orientiert sind, die durch die erste Zentralflottung (31') derselben Gruppe (28) gebildet wird.
  8. Brennermembran (14) nach Anspruch 5, wobei:
    - die ersten Flottungen (25') der Gruppe (28) alle dieselbe Länge aufweisen, jedoch zueinander versetzt oder abwechselnd versetzt angeordnet sind,
    - die zweiten Flottungen (25") der Gruppe (28) alle dieselbe Länge aufweisen, jedoch zueinander versetzt angeordnet sind.
  9. Brennermembran (14) nach Anspruch 5, wobei:
    - die ersten Flottungen (25') der Gruppe (28) alle dieselbe Länge aufweisen, jedoch zueinander versetzt oder abwechselnd versetzt angeordnet sind,
    - die zweiten Flottungen (25") der Gruppe (28) unterschiedliche Längen aufweisen und symmetrisch in Bezug auf eine Symmetrielinie angeordnet sind, die durch eine erste Zentralflottung (31') der ersten Flottungen (25') der Gruppe (28) gebildet wird,
    - das Gewebe (21) eine Mehrzahl einfacher Schnittpunkte (33) von Flottungen aufweist, diese Schnittpunkte (33) umfassend:
    - auf einer der Gewebeoberflächen (19, 20) genau eine Primärflottung (33'),
    - auf der anderen der Gewebeoberflächen (19, 20) genau eine Sekundärflottung (33"), die sich quer in Bezug auf die Orientierung der Primärflottung (33') erstreckt und mit genau einem Schnittpunkt auf der Primärflottung (33') überlagert wird.
  10. Brennermembran (14) nach Anspruch 5, wobei:
    - die ersten Flottungen (25') der Gruppe (28) stufenförmig versetzt angeordnet sind und insgesamt einen ersten Streifen (34) bilden, der sich schräg in Bezug auf die Orientierung der einzelnen ersten Flottungen (25') erstreckt,
    - die zweiten Flottungen (25") der Gruppe (28) stufenförmig versetzt angeordnet sind und insgesamt einen zweiten Streifen (34") bilden, der sich schräg zu der Orientierung der einzelnen zweiten Flottungen (25") erstreckt und auf dem ersten schrägen Streifen (34) überlagert wird.
  11. Brennermembran (14) nach Anspruch 10, wobei:
    - zusätzlich zu den Gruppen (28), die erste Gruppen bilden, das Gewebe (21) zweite Gruppen (35) mit verschiedener Form und Position im Vergleich zu den ersten Gruppen (28) bildet,
    - die ersten Flottungen (25') der zweiten Gruppe (35) eingerichtet sind, einen weiteren ersten Streifen (36) zu bilden, der sich schräg in Bezug auf die Orientierung der einzelnen ersten Flottungen (25') erstreckt, jedoch eine Form aufweist, die als die Form des ersten Streifens (34) der ersten Gruppe (28) verschieden ist,
    - die zweiten Flottungen (25") der zweiten Gruppe (35) eingerichtet sind, einen weiteren zweiten Streifen (36') zu bilden, der sich schräg in Bezug auf die Orientierung der einzelnen zweiten Flottungen (25") erstreckt, jedoch eine Form aufweist, die als die Form des zweiten Streifens (34') der ersten Gruppe (28) verschieden ist und auf dem weiteren ersten schrägen Streifen (36) überlagert ist.
  12. Brennermembran (14) nach Anspruch 9 oder 10, wobei:
    - die ersten Gruppen (28) und/oder die zweiten Gruppen (35) eingerichtet sind, eine Mehrzahl von Gruppensequenzen (28, 35) zu definieren, die sich in Schuss- oder Kettrichtung des Gewebes (21) in Form von Streifen (34, 36; 34', 36') erstrecken, die sich schräg in Bezug auf Kett- und Schussrichtungen erstrecken.
  13. Brennermembran (14) nach einem der Ansprüche 5 bis 12, wobei in derselben Gruppe (28) die Länge der längsten Flottung (25) auf der inneren Oberfläche (20) größer als die Länge der längsten Flottung (25) auf der Verbrennungsoberfläche (19) ist.
  14. Brennermembran (14) nach einem der vorhergehenden Ansprüche, wobei:
    - das Gewebe (21) eine Masse pro Bereich aufweist, die gleich oder größer als 1,3 kg/m2 ist oder in dem Bereich von 1,3 kg/m2 bis 1,6 kg/m2 liegt,
    - der Metalldraht (22) ein Draht mit Masse pro Länge ist, der in dem Bereich von 0,8 g/m bis 1,4 g/m oder in dem Bereich von 0,9 g/m bis 1,1 g/m liegt,
    - der Metalldraht (22) aus Fasern mit Durchmessern in dem Bereich von 30 Mikrometern bis 50 Mikrometern oder 40 Mikrometern besteht.
  15. Brennermembran (14) nach einem der vorhergehenden Ansprüche, wobei das Gewebe (21) von einer und mit einer Trägerschicht (38) getragen wird und in Kontakt steht, wobei die Trägerschicht (38) auf der Innenseite (18) der Brennermembran (14) angeordnet ist.
  16. Gasbrenner (2), umfassend eine Brennermembran (14) nach einem der vorhergehenden Ansprüche.
EP22754527.4A 2021-10-15 2022-07-26 Brennermembran für einen gasbrenner Active EP4416428B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102021000026453A IT202100026453A1 (it) 2021-10-15 2021-10-15 Membrana di combustione per un bruciatore a gas
PCT/IB2022/056871 WO2023062447A1 (en) 2021-10-15 2022-07-26 Combustion membrane for a gas burner

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EP4416428B1 true EP4416428B1 (de) 2026-02-04
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CN (1) CN118202194A (de)
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Publication number Priority date Publication date Assignee Title
IT202400003904A1 (it) 2024-02-23 2025-08-23 Beckett Thermal Solutions S R L Membrana di combustione per un bruciatore a gas
EP4607090A1 (de) 2024-02-23 2025-08-27 Beckett Thermal Solutions S.R.L. Brennermembran für einen gasbrenner

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2914903B1 (de) * 2012-10-31 2018-03-21 Bekaert Combustion Technology B.V. Gasvormischbrenner
EP2789911B1 (de) * 2013-04-09 2016-07-20 Bekaert Combustion Technology B.V. Gasvormischbrenner
US20160123580A1 (en) * 2013-07-02 2016-05-05 Bekaert Combustion Technology B.V. Gas premix burner

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CN118202194A (zh) 2024-06-14
WO2023062447A1 (en) 2023-04-20
EP4416428A1 (de) 2024-08-21
KR20240088850A (ko) 2024-06-20
IT202100026453A1 (it) 2023-04-15
EP4416428C0 (de) 2026-02-04
US20240410573A1 (en) 2024-12-12

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