WO2013107661A2 - Brûleur cylindrique à prémélange gazeux - Google Patents

Brûleur cylindrique à prémélange gazeux Download PDF

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Publication number
WO2013107661A2
WO2013107661A2 PCT/EP2013/050066 EP2013050066W WO2013107661A2 WO 2013107661 A2 WO2013107661 A2 WO 2013107661A2 EP 2013050066 W EP2013050066 W EP 2013050066W WO 2013107661 A2 WO2013107661 A2 WO 2013107661A2
Authority
WO
WIPO (PCT)
Prior art keywords
cylindrical
burner
section
gas premix
deck
Prior art date
Application number
PCT/EP2013/050066
Other languages
English (en)
Other versions
WO2013107661A3 (fr
Inventor
Dirk Ten Hoeve
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 EP13700009.7A priority Critical patent/EP2805111B1/fr
Publication of WO2013107661A2 publication Critical patent/WO2013107661A2/fr
Publication of WO2013107661A3 publication Critical patent/WO2013107661A3/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
    • F23D14/46—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
    • 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
    • F23D14/06—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 radial outlets at the burner head
    • 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
    • F23D2203/102—Flame diffusing means using perforated plates
    • F23D2203/1026—Flame diffusing means using perforated plates with slotshaped openings

Definitions

  • the invention relates to a cylindrical gas premix burner with a cylindrical burner deck comprising a perforated metal plate.
  • the cylindrical gas premix burner deck is particularly suited for use in a burner system with air to gas ratio control via ionization current measurement by means of an ionization pen.
  • Application of such gas premix burners is e.g. in boilers or in instantaneous water heaters.
  • Cylindrical gas premix burners with a perforated metal plate functioning as cylindrical burner deck are known, e.g. from EP 1337789, EP2037175, WO2009/077333, WO2009/065733 and WO201 1/069839. It is a general objective to have a burner that is as energy efficient as possible while minimizing emissions, e.g. of NOX and of CO. Cylindrical gas premix burners are used e.g. in boilers or in instantaneous water heaters.
  • WO201 1/069839 discloses a cylindrical gas burner with a burner deck that has an overall porosity being equal to or lower than 1 1 percent.
  • a disclosed example is wherein the first 1 1 .8 mm of the burner deck length has a porosity of 15 percent, thereafter is a zone of 46.8 mm of the burner deck length with a porosity of 7.3 percent and the last zone with a length of 5.8 mm of the burner deck length having a porosity of 16.5 percent.
  • an ionization signal which is obtained via measurement of the flame current by means of an ionization pen, is used to obtain a measure for the air to gas ratio.
  • Control methods aim at keeping the air to gas ratio constant (so-called lambda control) via controlling the supply to the burner, thereby obtaining clean combustion throughout the whole combustion range via adapting compositions of the combustion gas and/or adapting composition and/or temperature of the combustion air. It is a problem when using such control systems to optimize the air to gas ratio using ionization pen measurement, that the control cannot be done in an effective way over a broad load (or power) range of the cylindrical gas premix burner, with problems occurring especially at low burner load.
  • a first aspect of the invention is a cylindrical gas premix burner.
  • the gas premix burner comprises
  • the cylindrical burner deck is comprising a metal plate (and preferably wherein the cylindrical burner deck is formed by the metal plate), and wherein the cylindrical burner deck has a perforated zone, the perforated zone being the part of the cylindrical burner deck that is foreseen with perforations in the metal plate,
  • the end cap can be a metal plate devoid of perforations (meaning no combustion is taking place on the end cap).
  • the end cap can be perforated to form an additional burner deck on which combustion takes place.
  • the perforated zone is comprising - seen along the axis of the cylindrical gas premix burners - at least three sections, wherein a first section at the inlet, a third section located towards the end cap, and a second section located between the first and the third section.
  • the porosity of the second section of the cylindrical burner deck is at least 50% higher (and preferably between 50 and 200% higher, more preferably between 75 and 150% higher, even more preferably between 75% and 125% higher) than:
  • porosity is meant the percentage of surface which is covered with through holes through which gas premix will flow that will be combusted at the external surface of the burner deck.
  • the cylindrical gas premix burner is having excellent energy efficiency, low emissions combined with reliable use with ionization pen measurement control systems for the air to gas ratio control over a broad load range of the burner, including at low loads.
  • the burner will be used in blue flame mode (and not in red flame mode which is useful when heat is transferred via infrared radiation) whereby hot flue gas is generated that will transfer its energy via conductivity and via convection, e.g. to a fluid (e.g. water) in a heat exchanger (e.g. a cast heat exchanger or a plate heat exchanger or a spiral tube heat exchanger).
  • a fluid e.g. water
  • a heat exchanger e.g. a cast heat exchanger or a plate heat exchanger or a spiral tube heat exchanger.
  • the gas premix burner of the invention is a fully premixed
  • the gas premix burner of the invention can comprise a fan supplying the combustion air (such a burner with an air fan is not an atmospheric burner). Combustible gas is then added to the air, e.g. via an injector, making up the gas premix which comprises the full amount of air required for the combustion; no secondary air is required nor added for the combustion (and thus the burner is a fully premixed gas burner).
  • the gas premix flows through the inlet for gas premix and through the cylindrical burner deck after which the gas premix is combusted.
  • a cylindrical gas burner is a burner that has perforations substantially around the full circumference of the cylindrical burner deck.
  • the cylindrical gas burner of the invention has perforations around the full circumference of the cylindrical burner deck.
  • the cylindrical gas premix burner has a porosity of the second section of the cylindrical burner deck that is 100 % higher (to be understood within manufacturing tolerances of a 100% higher porosity) than:
  • the porosity of the second section of the cylindrical burner deck is double the porosity (meaning 100% higher) than the porosity of the first section and/or than the porosity of the third section of the perforated zone.
  • the porosity of the second section is double the porosity of the first section and then the porosity of the third section.
  • the shape of the perforations in the first, second and third section of the perforated zone of the cylindrical burner deck can be the same, but with a double density of the perforations in the second section compared to in the first section and to in the third section. It is a benefit of this embodiment that the burner deck can be produced more easily: the perforations in the burner deck are made by punching. A plate is moved with a certain displacement (in the direction that will become the axis of the cylindrical burner) into the punching unit. For punching the second section, the plate is moved half of the distance compared to when punching the first and/or the third section.
  • the gas premix is fed into the cylindrical gas premix burner with a minimum of flow restriction at the inlet of the cylindrical gas premix burner.
  • the inlet for gas premix has a circular shape, with a diameter as high as possible, preferably equal to at least 80%, preferably 90% of the internal diameter of the cylindrical gas premix burner.
  • the inlet can be e.g. of a ring shape.
  • the cylindrical gas premix according to the invention is devoid of a diffuser inside the space enclosed by the cylindrical burner deck.
  • the gas premix is flowing from the inlet to and through the burner deck without the presence of another object inside the cylindrical gas premix burner that would create a pressure drop of the gas premix.
  • the external diameter of the cylindrical burner deck is smaller than 60 mm, e.g. 50 mm.
  • Cylindrical burner decks with an external diameter less than 60 mm have the benefit that the gas premix is distributed better over the surface of the cylindrical burner deck, certainly at higher burner loads, which contributes in a synergetic way in the invention for a cylindrical gas premix burner that can be used in a larger load range and that is operating with air to gas ratio control via an ionization pen measurement.
  • the porosity pattern in each of the first, second and third section of the perforated zone of the cylindrical burner deck is fully repeated along the circumference of the cylindrical burner deck.
  • porosity pattern is meant the pattern of the perforations in the burner deck that create the porosity.
  • the porosity pattern can comprise different types of perforations, e.g. circular holes and slits. Slits are preferably of rectangular shape, possibly with rounded corners.
  • Slits are preferably of rectangular shape, possibly with rounded corners.
  • the porosity of the first section and/or of the third section of the perforated zone of the cylindrical burner deck is between 5 and 10%.
  • the porosity of the second section of the perforated zone of the cylindrical burner deck is between 10 and 20%.
  • the average porosity of the perforated zone of the cylindrical burner deck is below 1 1 %, more preferably between 7% and 1 1 %. It is a benefit of the cylindrical gas premix burners according to this embodiment of the invention that the distribution of the gas premix is improved, resulting in an improved performance of the burner over a larger load range of the burner.
  • premix burner - of the first section of the perforated zone of the cylindrical burner deck is between 25% and 40% of the length of the perforated zone of the cylindrical burner deck.
  • the length - measured along the axis of the cylindrical gas premix burner of the second section of the perforated zone of the cylindrical burner deck - is between 20% and 50% of the length of the perforated zone of the cylindrical burner deck.
  • the length - measured along the axis of the cylindrical gas premix burner - of the third section of the perforated zone of the cylindrical burner deck is between 25% and 40% of the length of the perforated zone.
  • the first section and the second section of the perforated zone of the cylindrical burner deck have the same length.
  • length is meant the length as measured along the axis of the cylindrical gas premix burner. Even more preferred is when the first, second and third section of the perforated zone of the cylindrical burner deck have the same length.
  • first section, the second section and the third section of the perforated zone of the cylindrical burner deck form the complete perforated zone of the cylindrical burner deck.
  • a second aspect of the invention is a gas premix burner system.
  • the gas premix burner system is comprising:
  • an ionization pen installed parallel with the axis of the cylindrical gas premix burner.
  • the ionization pen is installed at a distance between 5 and 10 mm, more preferably at a distance between 7 en 8 mm from the burner deck of the cylindrical gas premix burner.
  • the perforations in the burner deck can be of different shapes. E.g.
  • Slits can be positioned with their longest dimension in circumferential direction of the cylindrical burner deck. Slits can be positioned in such a way that one or more virtual lines on the cylindrical burner deck that are parallel with the axis of the cylindrical gas premix burner cross slits in at least one of the first, second or third section of the perforated zone of the cylindrical burner deck, preferably in each of the first, second and third section of the perforated zone of the cylindrical burner deck.
  • the ionization pen is positioned in front of slits of the cylindrical burner deck, creating a synergetic effect with the porosity arrangement of the burner deck according to the invention to enable use of the cylindrical gas premix burner over a broad load range with air to gas ratio control via use of an ionization pen.
  • the ionization pen is extending along the cylindrical burner deck into the second section of the perforated zone of the cylindrical burner deck over at least 25%, and preferably over more than 50%, and even more preferably over 100% of the length - measured in the direction along the axis of the cylindrical burner deck - of the second section of the perforated zone of the cylindrical burner deck.
  • the ionization pen is extending along the cylindrical burner deck into the third section of the perforated zone of the cylindrical burner deck, and preferably over at least 25%, and more preferably over more than 50%, and even more preferably over 100% of the length - measured in the direction along the axis of the cylindrical burner deck - of the third section of the perforated zone of the cylindrical burner deck.
  • a third aspect of the invention is a method for the operation of a cylindrical gas premix burner, wherein
  • a cylindrical gas premix burner is used as in the first aspect of the invention, or a gas premix burner system is used as in the second aspect of the invention.
  • an ionization pen is mounted along the cylindrical gas premix burner
  • the premix gas supply is controlled in order to optimize the air to gas ratio, wherein the control is using the measurement of the flame current by the ionization pen.
  • a fourth aspect of the invention is a boiler or an instantaneous water
  • the heat exchanger can be a cast heat exchanger, a plate heat exchanger, a tube heat exchanger, a spiral tube heat exchanger, a fabricated (e.g. welded) heat exchanger or any other type of heat exchanger.
  • the heat exchanger can e.g. be made out of aluminium, stainless steel or copper or out of alloys comprising such metals.
  • a fifth aspect of the invention is the use of the method of the third aspect of the invention in a boiler or in an instantaneous water heater.
  • the cylindrical gas premix burners are used in blue flame mode, the hot flue gas generated by the combustion is transferring its heat via
  • a heat exchanger e.g. in a cast aluminum heat exchanger
  • a fluid e.g. water
  • Figure 1 shows a cylindrical gas premix burner according to the invention.
  • Figure 2 shows test results for the ionization current measured as a
  • Figure 1 shows an example of a cylindrical gas premix burner 100
  • the cylindrical gas premix burner 100 is having a metal plate forming the cylindrical burner deck 1 10, an end cap 1 15, a flange 1 17 and an inlet 120 for gas premix (a mixture of combustible gas and air, preferably the burner is a fully premixed burner).
  • gas premix a mixture of combustible gas and air, preferably the burner is a fully premixed burner.
  • the end cap is welded to the cylindrical burner deck and the end cap is not perforated (no combustion is taking place at its surface).
  • the cylindrical burner deck 1 10 is having an external diameter DIAM of 50 mm.
  • the cylindrical gas premix burner 100 of the example is devoid of a diffuser inside the space enclosed by the cylindrical burner deck 1 10.
  • the metal plate forming the cylindrical burner deck 1 10 is having - seen along the axis of the cylindrical burner - different zones.
  • a first zone 130 (with length A measured along the axis of the cylindrical burner) at the inlet 120 is devoid of perforations; and the zone 170 (with length E) at the end cap 1 15 is also devoid of perforations.
  • the cylindrical deck is having a first section 140 (with length B) of the perforated zone, a second section 150 (with length C) of the perforated zone and a third section 160 (with length D) of the perforated zone.
  • Gas premix will flow through the perforations in the metal plate and the gas premix will be combusted on the external surface of the cylindrical gas premix burner 100.
  • the first section 140 of the perforated zone, the second section 150 of the perforated zone and the third section 160 of the perforated form together the perforated zone of the cylindrical burner deck in the example of a cylindrical gas premix burner according to the invention.
  • the perforation pattern of each of the first section 140, the second section 150 and the third section 160 of the perforated zone is repeated over the circumference of the cylindrical burner.
  • the perforation pattern can comprise different types of perforations, e.g. circular holes and slits, as illustrated in figure 1 .
  • circular holes can have a diameter of 0.8 mm.
  • the slits can be rectangular with a length of 4 mm and a height of 0.5 mm.
  • the length A of the unperforated zone 130 is 19.2 mm
  • the lengths B (of the first section 140 of the perforated zone), C (of the second section 150 of the perforated zone) and D (of the third section 160 of the perforated zone) are each 24 mm and the length E (of the unperforated zone 170) is 23.2 mm, meaning that the total length of the burner deck - measured along the axis of the cylindrical gas premix burner is 1 14.4 mm.
  • the porosity of the first section 140 of the perforated zone is 7.8%
  • the porosity of the second section 150 of the perforated zone is 15.6%
  • the porosity of the third section 160 of the perforated zone is 7.8%.
  • the average porosity of the perforated zone of the burner deck is 10.4%.
  • the porosity of the second section (150) is double (meaning 100% higher than) the porosity of the first section (140) and of the third section (160).
  • the double porosity is obtained by a double density of the perforations in the second section (150) compared to in the first section (140) and compared to in the third section (160).
  • Figure 1 shows an ionization pen 190 installed parallel with the axis of the cylindrical gas premix burner 100.
  • the distance between the ionization pen and the burner deck is 5 - 9 mm, preferably between 7 - 8 mm.
  • the ionization pen 190 is positioned such that it covers at least part of the second section (150) of the perforated zone of the burner deck.
  • the length of the ionization pen along the axis of the cylindrical burner and measured from the inlet (120) is indicated with F.
  • the ionization pen 190 covers at least half, even more preferably the full length, of the second section (150) of the perforated zone of the burner deck.
  • the ionization pen 190 covers at least part (e.g. 25% or 50% or 75% of the length) of the third section (160) of the perforated zone of the burner deck. Most preferred is when the ionization pen 190 covers the full length of the third section of the perforated zone of the burner deck.
  • Figure 2 shows test results for the ionization current measured by an
  • the ionization current is measured as a function of burner load in the low range of the burner load (load range of the burners goes up to 25 kW). The results for three burners are compared:
  • the burner indicated with BU1 is the burner according to the invention described in the example and as shown in figure 1 .
  • the burner indicated with BU2 is a burner of the same diameter and height as burner BU1 , but with a burner deck with a uniform porosity over the length of the cylindrical burner deck of 7.8%.
  • the burner indicated with BU3 is a burner of the same diameter and height as burner BU1 , but with a uniform porosity of 15.5% over the length of the perforated zone of the cylindrical burner deck and with a cylindrical diffuser with 7% porosity inside the cylindrical burner deck.
  • Figure 2 indicates in X-axis the load of the burner (in kW), whereas the Y- axis shows the electrical current (ionization current in microampere) measured by an ionization pen.
  • the ionization pen was placed at a distance of 8 mm from the cylindrical burner deck.
  • the ionization pen was extending over the full length of the perforated zone of the cylindrical burner deck, meaning that for burner BU1 the length F (as indicated in figure 1 ) is 91 .2 mm.
  • burner according to the invention results in a higher ionization current than the other burners, meaning that air to gas ratio control is facilitated and made possible over a broader load range, especially in the low load ranges.
  • burner BU1 burner according to the invention

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

L'invention concerne un brûleur cylindrique à prémélange gazeux (100) comprenant : un élément de recouvrement de brûleur cylindrique (110), cet élément de recouvrement de brûleur cylindrique (110) comprenant une plaque métallique. Ledit élément de recouvrement de brûleur cylindrique (110) comporte une zone perforée, cette zone perforée faisant partie de l'élément de recouvrement de brûleur cylindrique (110) prévue avec des perforations dans la plaque métallique, un élément de fermeture terminal (115), une admission (112) pour le prémélange gazeux située sur le côté opposé de l'élément de fermeture terminal (115). La zone perforée comprend, vu le long de l'axe du brûleur cylindrique à prémélange gazeux, au moins trois sections : une première section (140) au niveau de l'admission, une troisième section (160) à proximité de l'élément de fermeture terminal, et une deuxième section (150) située entre la première section (140) et la troisième section (160). La porosité de la deuxième section (150) de l'élément de recouvrement de brûleur cylindrique (110) est au moins 50 % supérieure à la porosité de la première section (140) de l'élément de recouvrement de brûleur cylindrique (110), puis la porosité de la troisième section (160). Le brûleur cylindrique à prémélange gazeux (100) peut être utilisé en association avec une tige d'ionisation (190) pour réguler efficacement la quantité d'air dans le rapport gazeux sur une large étendue de la charge du brûleur cylindrique à prémélange gazeux (100). Le brûleur cylindrique à prémélange gazeux (100) peut par exemple être utilisé dans des brûleurs ou des chauffe-eau instantanés.
PCT/EP2013/050066 2012-01-19 2013-01-03 Brûleur cylindrique à prémélange gazeux WO2013107661A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13700009.7A EP2805111B1 (fr) 2012-01-19 2013-01-03 Brûleur cylindrique à prémélange gazeux

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12151687.6 2012-01-19
EP12151687 2012-01-19

Publications (2)

Publication Number Publication Date
WO2013107661A2 true WO2013107661A2 (fr) 2013-07-25
WO2013107661A3 WO2013107661A3 (fr) 2014-04-10

Family

ID=47505026

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/050066 WO2013107661A2 (fr) 2012-01-19 2013-01-03 Brûleur cylindrique à prémélange gazeux

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EP (1) EP2805111B1 (fr)
WO (1) WO2013107661A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016105039U1 (de) * 2016-09-12 2017-09-14 Viessmann Werke Gmbh & Co Kg Gasbrenner
WO2019158382A1 (fr) 2018-02-14 2019-08-22 Bekaert Combustion Technology B.V. Brûleur cylindrique à gaz de pré-mélange

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023057937A1 (fr) * 2021-10-07 2023-04-13 Polidoro S.P.A. Brûleur à prémélange
EP4163544A1 (fr) 2021-10-07 2023-04-12 BDR Thermea Group B.V. Pont de brûleur et procédé de production d'un tel pont de brûleur
IT202200004688A1 (it) * 2022-03-11 2023-09-11 Beckett Thermal Solutions S R L Bruciatore

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1337789A1 (fr) 2000-12-01 2003-08-27 Furigas Assen B.V. Bruleur a premelange presentant un capuchon d'extremite impermeable courbe
EP2037175A2 (fr) 2007-09-12 2009-03-18 Polidoro S.p.A. Brûleur à prémélange
WO2009065733A1 (fr) 2007-11-19 2009-05-28 Sit La Precisa S.P.A. Con Socio Unico Brûleur, en particulier brûleur à prémélange
WO2009077333A1 (fr) 2007-12-19 2009-06-25 Joseph Le Mer Dispositif et procede pour stabiliser la pression et le debit d'un melange gazeux alimentant un brûleur cylindrique à combustion de surface
WO2011069839A1 (fr) 2009-12-11 2011-06-16 Bekaert Combustion Technology B.V. Brûleur pourvu d'une plateforme de brûleur à faible porosité

Family Cites Families (2)

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Publication number Priority date Publication date Assignee Title
US5215457A (en) * 1990-01-24 1993-06-01 Worgas Bruciatori S.R.L. Combustion process and gas burner with low nox, co emissions
AT398467B (de) * 1991-07-10 1994-12-27 Vaillant Gmbh Brenner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1337789A1 (fr) 2000-12-01 2003-08-27 Furigas Assen B.V. Bruleur a premelange presentant un capuchon d'extremite impermeable courbe
EP2037175A2 (fr) 2007-09-12 2009-03-18 Polidoro S.p.A. Brûleur à prémélange
WO2009065733A1 (fr) 2007-11-19 2009-05-28 Sit La Precisa S.P.A. Con Socio Unico Brûleur, en particulier brûleur à prémélange
WO2009077333A1 (fr) 2007-12-19 2009-06-25 Joseph Le Mer Dispositif et procede pour stabiliser la pression et le debit d'un melange gazeux alimentant un brûleur cylindrique à combustion de surface
WO2011069839A1 (fr) 2009-12-11 2011-06-16 Bekaert Combustion Technology B.V. Brûleur pourvu d'une plateforme de brûleur à faible porosité

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016105039U1 (de) * 2016-09-12 2017-09-14 Viessmann Werke Gmbh & Co Kg Gasbrenner
WO2019158382A1 (fr) 2018-02-14 2019-08-22 Bekaert Combustion Technology B.V. Brûleur cylindrique à gaz de pré-mélange

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Publication number Publication date
EP2805111B1 (fr) 2018-07-04
WO2013107661A3 (fr) 2014-04-10
EP2805111A2 (fr) 2014-11-26

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