WO2015000869A1 - Brûleur à prémélange de gaz - Google Patents

Brûleur à prémélange de gaz Download PDF

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Publication number
WO2015000869A1
WO2015000869A1 PCT/EP2014/063902 EP2014063902W WO2015000869A1 WO 2015000869 A1 WO2015000869 A1 WO 2015000869A1 EP 2014063902 W EP2014063902 W EP 2014063902W WO 2015000869 A1 WO2015000869 A1 WO 2015000869A1
Authority
WO
WIPO (PCT)
Prior art keywords
burner
deck
burner deck
zone
density
Prior art date
Application number
PCT/EP2014/063902
Other languages
English (en)
Inventor
Wilhelm Salvatore VAN DEN BERG
Eric Heuveling
Geert Folkers
Original Assignee
Bekaert Combustion Technology B.V.
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 Bekaert Combustion Technology B.V. filed Critical Bekaert Combustion Technology B.V.
Priority to US14/893,883 priority Critical patent/US20160123580A1/en
Priority to EP14735913.7A priority patent/EP3017098B1/fr
Priority to CN201480035718.2A priority patent/CN105339539B/zh
Publication of WO2015000869A1 publication Critical patent/WO2015000869A1/fr

Links

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
    • F23D14/12—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
    • F23D14/02—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
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/186—Water-storage heaters using fluid fuel
    • 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
    • F23D2203/1017—Flame diffusing means characterised by surface shape curved
    • 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
    • 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
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00019—Outlet manufactured from knitted fibres

Definitions

  • the invention relates to gas premix burners that have a woven, knitted or braided burner deck comprising metal fibers.
  • gas premix burner can e.g. be used in boilers or in instantaneous water heaters.
  • Gas premix burners with a knitted or woven fabric comprising metal fibers as burner deck positioned on a perforated plate or woven screen (a woven wire mesh) which is acting as gas distribution plate are known. It is a benefit of such burners that the burner deck (e.g. a knitted or woven fabric) can freely expand when hot, while the perforated plate or the woven wire mesh is remaining sufficiently cool. Such burners are e.g. known from US4657506 and WO2004/092647.
  • the primary object of the invention is to provide an improved gas premix burner.
  • a first aspect of the invention is a gas premix burner comprising:
  • a woven, knitted or braided burner deck comprising metal fibers, supported by the perforated plate, woven wire mesh or expanded metal sheet.
  • the burner deck is the surface on which the combustion of the premix gas occurs after the premix gas has flown through it.
  • the woven, knitted or braided burner deck comprises at least a zone with a high density of at least 1250 g/dm 3 .
  • the zone with a high density includes preferably at least 25%, more preferably at least 30%, more preferably at least 40%, even more preferably at least 70%, of the surface of the burner deck.
  • the zone of a high density covers the complete burner deck.
  • the zone with a high density has a density of at least 1350 g/dm 3 , more preferably of at least 1400 g/dm 3 , more preferably of at least 1450 g/dm 3 , more preferably of at least 1500 g/dm 3 , more preferably of at least 1750 g/dm 3 , even more preferably of at least 2000 g/dm 3 .
  • preferably below 3500 g/dm 3 more preferably below 2500 g/dm 3 .
  • the value of the density for a burner deck can be set by compressing a fabric to a specific thickness for use as burner deck.
  • the zone with a high density is not connected via metal bonds to the perforated plate, woven wire mesh or expanded metal sheet supporting the woven, knitted or braided burner deck.
  • the presence of the flame can amplify any noise that is present, from a level that the noise is not audible up to levels that are very annoying.
  • Noise is a standing wave.
  • the flame is not constant over time.
  • the short term fluctuations in the flame can coincide with the frequency of the noise resulting in amplification of the standing waves (and consequently of the noise).
  • This process is called thermo-acoustic instability.
  • the burner needs to be operated over a certain load range and also in a range of the air to gas ratio. This creates a large range of possible conditions of operation of the boiler, that each need to be sufficiently silent in operation, meaning that acoustic instabilities should be sufficiently low over the full range of modulation of the burner.
  • the interactions between the different parameters are believed to be extremely complex and not understood.
  • the gas premix burners of the invention have shown to have substantially less thermo acoustic instabilities than prior art gas premix burners.
  • the knitted burner deck can be using spun yarns comprising metal fibers of discrete length, using metal multifilament yarns, or using metal monofilaments.
  • the woven, knitted or braided burner deck comprises a zone or zones with a density less than the density of the zone with high density.
  • the zone or zones with density less than the density of the zone with high density has a density lower than 1 100 g/dm 3 , preferably lower than 1000 g/dm 3 , but preferably higher than 800 g/dm 3 , more preferably higher than 900 g/dm 3 .
  • a burner deck with zones of different densities can be obtained by
  • Embodiments with zones with different densities have shown to provide synergistic benefits, in that the presence of such zones of the burner deck with lower density than the density of the zone with high density further reduces acoustic instabilities.
  • one or more sections of the burner deck of the gas premix burner are double curved; and the zone or zones of the burner deck with density less than the density of the zone with high density, comprise at least part of, and preferably in full, the one or more sections of the burner deck that are double curved.
  • a surface is at a point on it double curved, there is at that point no direction in which the radius of curvature at that point is infinite.
  • a cylindrical burner is a burner that has a single curved surface.
  • a sphere is an object that is double curved over its full surface.
  • burners according to the invention In zones in which the fabric that will form the burner deck is less compressed, it can more easily be deformed, allowing draping and mounting the fabric on the supporting perforated plate, woven wire mesh or expanded metal sheet, while obtaining synergistic benefits of less thermo-acoustic instabilities and the benefits of using a fabric as burner deck.
  • knitted burner decks are preferred as knitted fabrics allow more easily setting different levels of density by different levels of compression of the knitted fabric that will be used as burner deck.
  • the zone with a high density does not cover points of the burner deck that have a smallest radius of curvature of less than 5 mm, preferably of less than 8 mm.
  • the burner deck comprises a zone with a density lower than 900 g/dm 3 , preferably lower than 750 g/dm 3 .
  • the burner comprises an ionization electrode and /or an ignition electrode, and a zone with a density lower than 900 g/dm 3 (and preferably lower than 750 g/dm 3 ) is provided at the location of the ionization electrode and/or at the location of the ignition electrode.
  • the zone with a density lower than 900 g/dm 3 (and preferably lower than 750 g/dm 3 ) covers less than 20%, more preferably less than 10%, of the surface of the burner deck.
  • ionization current measurement by means of the ionization pen can be used in a broad load range of the burner as a reliable indication of the air to gas ratio of the gas premix burner and hence as input for the modulation of the air to gas ratio supplied to the gas premix burner.
  • Improved modulation contributes to the avoidance of acoustical instabilities, as the burner can be better controlled to avoid falling into a range of operation in which acoustical instabilities could occur.
  • the burner deck has over its full surface a constant density.
  • the burner deck has a mass per unit of area larger than 1000 g/m 2 , preferably larger than 2000 g/m 2 and preferably smaller than 2750 g/m 2 .
  • fabrics that can be used for the burner deck are knitted fabrics with a specific weight of 1250 g/m 2 or 1400 g/m 2 or 2400 g/m 2 .
  • the burner deck has over its full surface a constant mass per unit of area [26] In preferred embodiments, the burner deck is not over its full surface bonded to the perforated plate, woven wire mesh or expanded metal sheet supporting the burner deck.
  • the burner deck is bonded
  • the burner deck is bonded to the perforated plate, woven wire mesh or expanded metal sheet at edge zones of the burner deck, and preferably only bonded at the edge zones of the burner deck.
  • the burner deck is soft welded over at least part of its surface to the perforated plate, woven wire mesh or expanded metal sheet.
  • the soft welding is performed over at least 50% of surface of the burner deck, more preferably over at least 75% of its surface, and even more preferably substantially over its full surface or over its full surface.
  • the soft welding is performed (e.g. by means of capacitor discharge welding) such that when pulling the woven, knitted or braided burner deck from the perforated plate, woven wire mesh or expanded metal sheet, the soft welded bonds between the woven, knitted or braided burner deck and the perforated plate, woven wire mesh or expanded metal sheet are broken rather than that breakage in the woven, knitted or braided burner deck occurs.
  • the test method to determine that the burner deck is soft welded, is pulling in peel-off mode: an edge portion of the burder deck is removed from the perforated plate, woven wire mesh or expanded metal sheet, and folded over 180°. Pulling the burner deck is then done by hand or using pliers, wherein the pulling force is exerted parallel with the perforated plate, woven wire mesh or expanded metal sheet, in a direction of 180° to the burner deck.
  • the force builds up until the burner deck is progressively peeled off from the supporting perforated plate, woven wire mesh or expanded metal sheet leaving no metal fibers of the burner deck on the supporting perforated plate, woven wire mesh or expanded metal sheet (indicating that soft welding occurred); or until progressively destroying the burner deck at least partly wherein metal fibers of the burner deck remain attached to the supporting perforated plate, woven wire mesh or expanded metal sheet (indicating that no soft welding occurred).
  • the conclusion whether or not the burner deck is soft- welded to the supporting perforated plate, woven wire mesh or expanded metal sheet is independent of further parameters.
  • thermo-acoustical instabilities Such embodiments have shown further improvement in the reduction of thermo-acoustical instabilities.
  • the benefits of using a woven, knitted or braided burner deck comprising metal fibers are maintained.
  • the benefits are that when the burner is in use the woven, knitted or braided burner deck can freely expand; and the perforated plate, the woven wire mesh or the expanded metal sheet remains sufficiently cool.
  • the woven, knitted or braided burner deck comprises or
  • the woven, knitted or braided burner deck comprises yarns comprising or consisting out of metal filaments.
  • filament is meant a fiber of virtually infinite length.
  • the yarns comprising metal filaments can be metal multifilament yarns or can be metal monofilament yarns.
  • the burner deck is one layer of a woven
  • the burner deck is knitted, woven or braided using yarns comprising or consisting out of a plurality of metal filaments or metal staple fibers in the cross section, or using yarns consisting out of metal monofilaments.
  • the surface of the woven, knitted or braided burner deck at the other side than the side of the perforated plate, woven wire mesh or expanded metal sheet is not covered by another metallic object, such that the surface of the woven, knitted or braided burner deck is, when the burner is in use, the surface on which combustion takes place.
  • Examples of preferred metal fibers are stainless steel fibers.
  • a specifically preferred range of stainless steel fibers are chromium and aluminium comprising stainless steel fibers as in DIN 1 .4767, e.g. as are known under the trademark FeCrAlloy.
  • equivalent diameter of a fiber is meant the diameter of a circle with the same surface area as the cross sectional area of that fiber.
  • Preferred metal fibers for use in the invention e.g. stainless steel fibers, with an equivalent diameter less than 50 micrometer or less than 40 micrometer, e.g. less than 25 micrometer, can be obtained by a bundle drawing technique.
  • This technique is disclosed e.g. in US-A-2050298, US- A-3277564 and in US-A-3394213.
  • Metal wires are forming the starting material and are covered with a coating such as iron or copper.
  • a bundle of the covered wires is subsequently enveloped in a metal pipe. Thereafter the thus enveloped pipe is reduced in diameter via subsequent wire drawing steps to come to a composite bundle with a smaller diameter.
  • the subsequent wire drawing steps may or may not be alternated with an appropriate heat treatment to allow further drawing.
  • the initial wires have been transformed into thin fibers which are embedded separately in the matrix of the covering material.
  • a bundle preferably comprises not more than 2000 fibers, e.g. between 500 and 1500 fibers.
  • the covering material can be removed e.g. by solution in an adequate leaching agent or solvent. The result is a bundle of metal fibers.
  • metal fibers for use in the invention can be manufactured in a cost effective way by machining a thin plate material.
  • a process is disclosed e.g. in US-A-4930199.
  • a strip of a thin metal plate is the starting material. This strip is wound a number of times around a rotatably supported main shaft and is fixed thereto. The main shaft is rotated at constant speed in a direction opposite to that in which the plate material is wound.
  • a cutter having an edge line extending perpendicularly to the axis of the main shaft is fed at constant speed. The cutter has a specific face angle parallel to the axis of the main shaft. The end surface of the plate material is cut by means of the cutter.
  • Yet an alternative way of producing metal fibers for use in the invention is via extraction or extrusion from a melt of a metal or metal alloy.
  • Another alternative way of producing metal fibers for use in the invention is machining fibers from a solid block of metal.
  • Yarns, comprising or consisting out of metal fibers, for the production of the knitted fabric, the braided fabric or the woven fabric for use in the invention can e.g. be spun from stretch broken fibers (such as bundle drawn stretch broken fibers) and/or can e.g. be yarns made from shaved or machined fibers.
  • the yarns can be plied yarns, e.g. two ply, three ply...
  • Preferred fabrics made from metal fibers have a mass per unit of area of between 0.6 and 3 kg/m 2 ; preferably between 0.7 and 3 kg/m 2 , even more preferred between 1 .2 and 2.5 kg/m 2 .
  • the knitted fabric, the braided fabric or the woven fabric can also comprise metal monofilaments.
  • the knitted fabric, the braided fabric or the woven fabric can e.g. be produced out of metal monofilaments.
  • woven fabric has a mass per unit of area between 0.6 and 1 .3 kg/m 2 , more preferably between 0.6 and 0.9 kg/m 2 .
  • the gas premix burner of the invention is suited for use in a boiler or water heater.
  • the second aspect of the invention is a boiler or water heater comprising a gas burner as in the first aspect of the invention.
  • Figure 1 shows an example of a gas premix burner of the invention.
  • Figure 2 shows an example of an inventive burner with a double-curved burner deck.
  • Figures 3 and 4 show cross sections of the burner of figure 2.
  • Figure 5 shows the knitted fabric used for the burner deck of the burner of figure 2.
  • Figure 6 shows another example of an inventive burner with a double- curved burner deck.
  • Figures 7 and 8 show cross sections of the burner of figure 6. Mode(s) for Carrying Out the Invention
  • Figure 1 shows an example of a gas premix burner 100 of the invention.
  • the gas premix burner 100 has a single-curved knitted burner deck.
  • the knitted fabric consists out of spun stainless steel fiber yarns knitted into a fabric.
  • the knitted burner deck 1 10 is supported by a perforated metal plate 130.
  • the knitted burner deck 1 10 has two zones with different densities.
  • a zone with a lower density can be foreseen at an ionization electrode. It is also possible to provide the burner with a burner deck of uniform density equal to the density of the zone 140 of high density of the burner 100 of figure 1 .
  • Table I summarizes the results of trials with the burner of figure 1 . All trials have been performed with the same burner geometries (except for modifying the knitted burner deck as indicated in table I) and with a uniform density of the knitted burner deck.
  • FIG. 1 shows an example of a gas premix burner 200 according to the invention with a burner deck comprising double curved sections.
  • the burner 200 comprises a knitted metal fiber yarn burner deck 210 supported by a woven metal wire mesh (not shown on figure 2) and a metal plate 235.
  • Figures 3 and 4 show the cross sections of the burner 200 along lines Ill-Ill and IV-IV respectively.
  • Figures 3 and 4 show the woven metal wire mesh 330, 430 supporting the knitted metal fiber yarn burner deck 310, 410 and the plate 335, 435 welded along the edges of the knitted metal fiber yarn burner deck 310, 410 to the knitted metal fiber yarn burner deck 310, 410.
  • This welding operation creates a weld between the metal plate 335, 435 and the knitted metal fiber yarn burner deck 310, 410 and through the applied heat at the same locations also between the knitted metal fiber yarn burner deck 310, 410 and its supporting woven metal wire mesh 330, 430.
  • Figure 5 shows the knitted metal fiber yarn fabric 510 that is used for the burner deck of the burner shown in figure 2.
  • the fabric 510 shows sections with different density.
  • a first section consists out of zones 541 of high density.
  • a second section consists out of zones 551 with density less than the density of the zones 541 with high density.
  • An optional zone 560 can be present with density lower than 900 g/dm 3 (e.g. a density of 875 g/dm 3 ), zone at which an ionization electrode and/or an ignition pen can be advantageously be installed.
  • Table II summarizes the results of trials performed on the burner shown in figures 2 - 5, compared to the same burner geometry and a prior art knitted burned deck.
  • FIG. 6 shows another example of a gas premix burner according to the invention with double-curved sections.
  • the burner 600 comprises a knitted metal fiber yarn burner deck 610 supported by a woven metal wire mesh 630 and a metal plate 635.
  • Figures 7 and 8 show the cross sections of the burner 600 along lines VII-VII and IV-IV respectively.
  • Figures 7 and 8 show the woven metal wire mesh 730, 830 supporting the knitted metal fiber yarn burner deck 710, 810 and the plate 735, 835 welded along the edges of the knitted metal fiber yarn burner deck 710, 810 to the knitted metal fiber yarn burner deck 710, 810.
  • This welding operation creates a weld between the metal plate 735, 835 and the knitted metal fiber yarn burner deck 310, 410 and through the applied heat at the same locations also between the knitted metal fiber yarn burner deck 310, 410 and its supporting woven metal wire mesh 730, 830.
  • the burner deck 610 has a central zone 642 where it is single curved and two end sections 652 where it is double curved.
  • a knitted metal fiber fabric of 1400 g/m 2 is used as burner deck.
  • the density of the burner deck was constant over its complete surface, 1500 g/dm 3 .
  • the density of the burner deck at the two double curved end sections 652 and at the transition into the single curved central zone 642 is 950 g/dm 3 .
  • the density of the burner deck in the central zone is 1700 g/dm 3 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Gas Burners (AREA)
  • Woven Fabrics (AREA)
  • Knitting Of Fabric (AREA)

Abstract

L'invention concerne un brûleur à prémélange de gaz comportant une plaque perforée, un treillis en fil métallique tissé ou une tôle métallique étirée; et un plancher de brûleur tissé, tricoté ou tressé comportant des fibres métalliques soutenues par la plaque perforée, le treillis en fil métallique tissé ou la tôle métallique étirée. Le plancher de brûleur tissé, tricoté ou tressé comporte au moins une zone présentant une densité élevée d'au moins 1250 g/dm3. La zone de densité élevée comprend au moins 25% de la surface du plancher de brûleur.
PCT/EP2014/063902 2013-07-02 2014-07-01 Brûleur à prémélange de gaz WO2015000869A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US14/893,883 US20160123580A1 (en) 2013-07-02 2014-07-01 Gas premix burner
EP14735913.7A EP3017098B1 (fr) 2013-07-02 2014-07-01 Brûleur de gaz pré-mélangé
CN201480035718.2A CN105339539B (zh) 2013-07-02 2014-07-01 气体预混燃烧器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13174661.2 2013-07-02
EP13174661 2013-07-02

Publications (1)

Publication Number Publication Date
WO2015000869A1 true WO2015000869A1 (fr) 2015-01-08

Family

ID=48740923

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/063902 WO2015000869A1 (fr) 2013-07-02 2014-07-01 Brûleur à prémélange de gaz

Country Status (5)

Country Link
US (1) US20160123580A1 (fr)
EP (1) EP3017098B1 (fr)
CN (1) CN105339539B (fr)
TR (1) TR201910322T4 (fr)
WO (1) WO2015000869A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019011736A1 (fr) 2017-07-13 2019-01-17 Bekaert Combustion Technology B.V. Brûleur à prémélange gazeux
WO2019011738A1 (fr) 2017-07-13 2019-01-17 Bekaert Combustion Technology B.V. Brûleur à gaz de prémélange
EP3434976A1 (fr) * 2017-07-28 2019-01-30 Polidoro S.p.A. Unité de brûleur
WO2019021224A1 (fr) * 2017-07-28 2019-01-31 Polidoro S.P.A. Unité de brûleur
WO2019201600A1 (fr) 2018-04-19 2019-10-24 Bekaert Combustion Technology B.V. Brûleur à gaz de prémélange
EP3572728A1 (fr) * 2018-05-22 2019-11-27 Bekaert Combustion Technology B.V. Brûleur de gaz pré-mélangé
WO2020006208A1 (fr) 2018-06-28 2020-01-02 Clearsign Combustion Corporation Capteur pour mélange gazeux à composition variable
IT202100026453A1 (it) * 2021-10-15 2023-04-15 Beckett Thermal Solutions S R L Membrana di combustione per un bruciatore a gas
IT202100026447A1 (it) * 2021-10-15 2023-04-15 Beckett Thermal Solutions S R L Membrana di combustione per un bruciatore a gas
IT202100026435A1 (it) * 2021-10-15 2023-04-15 Beckett Thermal Solutions S R L Membrana di combustione per un bruciatore a gas

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DE102017204013A1 (de) 2017-03-10 2018-09-13 Robert Bosch Gmbh Verfahren zur Herstellung eines Flächenbrenners sowie ein Flächenbrenner
US11326808B2 (en) * 2017-07-13 2022-05-10 Bekaert Combustion Technology B.V. Premix gas burner
EP3652484A1 (fr) * 2017-07-13 2020-05-20 Bekaert Combustion Technology B.V. Brûleur à gaz à prémélange

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US2050298A (en) 1934-04-25 1936-08-11 Thos Firth & John Brown Ltd Metal reducing method
US3394213A (en) 1964-03-02 1968-07-23 Roehr Prod Co Inc Method of forming filaments
US3277564A (en) 1965-06-14 1966-10-11 Roehr Prod Co Inc Method of simultaneously forming a plurality of filaments
US4657506A (en) 1984-12-10 1987-04-14 Glowcore Corporation Gas burner
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WO2019011736A1 (fr) 2017-07-13 2019-01-17 Bekaert Combustion Technology B.V. Brûleur à prémélange gazeux
WO2019011738A1 (fr) 2017-07-13 2019-01-17 Bekaert Combustion Technology B.V. Brûleur à gaz de prémélange
EP3434976A1 (fr) * 2017-07-28 2019-01-30 Polidoro S.p.A. Unité de brûleur
WO2019021224A1 (fr) * 2017-07-28 2019-01-31 Polidoro S.P.A. Unité de brûleur
WO2019021039A1 (fr) * 2017-07-28 2019-01-31 Polidoro S.P.A. Unité de brûleur
US11215358B2 (en) 2017-07-28 2022-01-04 Polidoro S.P.A. Burner unit
WO2019201600A1 (fr) 2018-04-19 2019-10-24 Bekaert Combustion Technology B.V. Brûleur à gaz de prémélange
EP3572728A1 (fr) * 2018-05-22 2019-11-27 Bekaert Combustion Technology B.V. Brûleur de gaz pré-mélangé
EP3814685A1 (fr) * 2018-06-28 2021-05-05 ClearSign Technologies Corporation Capteur pour mélange gazeux à composition variable
WO2020006208A1 (fr) 2018-06-28 2020-01-02 Clearsign Combustion Corporation Capteur pour mélange gazeux à composition variable
EP3814685A4 (fr) * 2018-06-28 2022-03-23 ClearSign Technologies Corporation Capteur pour mélange gazeux à composition variable
IT202100026453A1 (it) * 2021-10-15 2023-04-15 Beckett Thermal Solutions S R L Membrana di combustione per un bruciatore a gas
IT202100026447A1 (it) * 2021-10-15 2023-04-15 Beckett Thermal Solutions S R L Membrana di combustione per un bruciatore a gas
IT202100026435A1 (it) * 2021-10-15 2023-04-15 Beckett Thermal Solutions S R L Membrana di combustione per un bruciatore a gas
EP4166846A1 (fr) * 2021-10-15 2023-04-19 Beckett Thermal Solutions S.R.L. Membrane de combustion pour un brûleur à gaz
WO2023062447A1 (fr) * 2021-10-15 2023-04-20 Beckett Thermal Solutions S.R.L. Membrane de combustion pour un brûleur à gaz
WO2023062448A1 (fr) * 2021-10-15 2023-04-20 Beckett Thermal Solutions S.R.L. Membrane de combustion pour brûleur à gaz

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CN105339539B (zh) 2018-07-06
TR201910322T4 (tr) 2019-07-22
EP3017098A1 (fr) 2016-05-11
CN105339539A (zh) 2016-02-17
EP3017098B1 (fr) 2019-06-05

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