EP1616128B1 - Brenner mit einer metallmembran - Google Patents
Brenner mit einer metallmembran Download PDFInfo
- Publication number
- EP1616128B1 EP1616128B1 EP04714333.4A EP04714333A EP1616128B1 EP 1616128 B1 EP1616128 B1 EP 1616128B1 EP 04714333 A EP04714333 A EP 04714333A EP 1616128 B1 EP1616128 B1 EP 1616128B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burner
- section
- base
- membrane
- gas burner
- 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.)
- Expired - Lifetime
Links
- 239000012528 membrane Substances 0.000 title claims description 36
- 239000002184 metal Substances 0.000 title claims description 10
- 230000007704 transition Effects 0.000 claims description 32
- 239000004744 fabric Substances 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 26
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
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
- 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
- F23D2212/00—Burner material specifications
- F23D2212/20—Burner material specifications metallic
- F23D2212/201—Fibres
Definitions
- the present invention relates to a gas burner comprising a metal burner membrane.
- the first drawback of these burners is that for a given dimension, they do not allow for a large range in output power: at low power, i.e. if the gasflow is low, there is a risk for flame extinguishment, and at high powers, i.e. if the gasflow is high, there is a risk that the flame blows off.
- a third drawback of these burners is that different parts have to be punched, formed and welded together which leads to expensive burners.
- the gas burner according the present invention is decribed in Claim 1.
- the gas burner comprises a metal burner membrane. Geometrically this burner membrane comprises a base section and a closing section.
- the base section has a smallest radius of curvature R base . What is meant with “smallest radius of curvature” will be explained further on.
- the base section is connected uninterruptedly to the closing section through a transition region: the transition region burner membrane comprises the same elements as the base and closing section.
- the transition region has a smallest radius of curvature r transition being larger than zero and being smaller or equal to R base .: 0 ⁇ r transition ⁇ R base .
- the claimed range is : 0.02 x R base ⁇ r transition ⁇ 0.35 ⁇ R base
- the invention relates to the embodiment of this geometrical construction, which of course is subject to engineering tolerances.
- the invention is not delimited to the abstract geometrical shape as such but to the shape of the actual burner membrane. This shape can be easily measured by means of an appropriate computerised 3-D measuring bench that allows for immediate determination of the geometrical features in general and the radii of curvature in particular.
- the shape of the burner membrane influences the functioning of the burner in the following way: those regions of the burner membrane that have a smaller radius of curvature yield a lower gas speed outside the membrane compared to the regions with a higher radius of curvature. A lower gas speed leads to a lower flame front. So the speed of the gas outside the membrane, and subsequently the flame front, can be advantageously modulated over the surface by changing the radius of curvature.
- the transition from base section to closing section is realised without interruption.
- uninterrupted is meant that the membrane forming the different sections (base, transition and closing) are not connected by any means that would lead to a seam of the membrane with a blocked gas flow at the burner surface as a result.
- the three sections: base, transition and closing must be gas permeable.
- the fact that the burner membrane is free of interruption ensures a closed flame front throughout the whole burner membrane.
- FIG. 1 The basic geometrical features of the invention are illustrated in Figure 1 where a shape 100 of a burner membrane is depicted consisting out of a base section 102, a transition section 104 and a top section 106.
- 'a' has its normal N to the surface.
- the osculating circle C touches T1 in 'a'. If will be clear that of all planes containing N, the plane P1 determines the trajectory T1 with the smallest radius of curvature R(a) at 'a'.
- the smallest value of all R(x)'s can be chosen.
- a smallest radius of curvature 'R base ' is obtained.
- a smallest radius of curvature 'r transition ' can be found for the transition region. It is essential to the invention that the smallest radius of curvature of the transition region is smaller or equal than the smallest radius of curvature of the base section.
- Figure 2 depicts a first preferred embodiment 200 in perspective view.
- the base section 201 is frustoconical in shape and reaches its minimum radius of curvature on the circle 204.
- the transition region 202 is a surface section of a torus and the closing section 203 is a flat disc.
- Figure 3 (a) shows the geometrical elements of the first preferred embodiment of Figure 2 according the line AA'. Only the outer surface of the surface membrane is depicted in order to bring forward the geometrical elements.
- the frustoconical base section 201 has its smallest radius of curvature at the smaller diameter side.
- the half top angle of the cone 326 was about 30° although 0° (a cylindrical base section) turned out to work just as well (embodiment not shown). Higher top angles are also not excluded. All points on the circle 204 share the same minimum radius of curvature R base 328.
- the sphere 320 with radius R base defines the largest 'smallest radius of curvature' the transition region may have according the invention but falls outside the scope of the claims.
- the transition region is part of the surface of a torus formed by a circle 324 that is rotated around the symmetry axis 340.
- the radius of circle 324 determines the radius of the transition region 'r transition ' 330.
- Part of a torus surface between the plane of circle 204 and a plane parallel to the latter is taken as the transition region.
- the torus can also be constructed by rotating an ellipse or an oval or any other rounded figure around the axis of symmetry 340.
- the torus is degenerate i.e. when there is no hole in the middle, is not excluded. This is e.g. the case in Figure 3a .
- the closing section 203 is a flat disc in this embodiment. In another preferred embodiment of this invention (no figure provided) the closing section is a small inverted sphere cap thus entailing a depression at the centre of the burner membrane.
- crossover from base section to transition region need not be smooth (with 'smooth' is meant continuous first order derivatives) but must be uninterrupted (zero order continuity).
- Figure 3b depicts the physical features of the first preferred embodiment along the cut according plane AA' indicated in Figure 2 .
- 201' indicates the stamped foraminated metal plate made out of a single piece of metal plate.
- the foraminated metal plate is provided with a number of holes. As the hole size is relatively large (1 mm for this embodiment), the change in hole size at the transition region due to the deformation of the plate is not relevant to the flow speed of the gas.
- a piece of knitted metal fibre fabric 305 is tensioned over the base section, the transition section and the closing section.
- the fabric was attached to the foraminated plate by means of spot welding although other means of fastening are equally well possible for example - without being exhaustive - by sewing or by stapling.
- the fabric was kept on the foraminated plate by means of a clamping ring that was spot welded to the plate.
- Knitted metal fibre fabric allows for a high elongation thus leading to a continuous transition from the base section to the closing section.
- the arrows 307, 308 and 309 indicate the velocity of the gas as it flows out of the membrane.
- the lower gas velocity in the transition region 202 is represented with a shorter vector 308, while the gas velocity at the base section 201 and the closing section 203 is higher which is represented by a longer vector 309 resp. 307.
- the lower flame front 310 - where the gas ignites - and the outer flame front 313 - where the top of the flame is - is indicated for each of the sections.
- Figure 4 a preferred embodiment is illustrated that is more suited for replacement of a rectangular type burner.
- the cross-section of the base section is essentially rectangular of which the edges are rounded.
- Figure 4b is a cross-section along plane AA' of Figure 4a : the base section 401 smoothly goes over into the transition region 402 which approximates the upper half of an ellipse with a minor half axis indicated by 406 and a major half axis indicated by 405.
- 407 indicates the osculating circle associated with the smallest radius of curvature of the transition region.
- Figure 4c shows a cut along the line BB'.
- Figure 4c shows an essentially identical shape as the AA' cut, but here the half ellipse has been cut in two, and the two quarter pieces have been displaced the appropriate distance.
- Figure 4d shows the closing view of a horizontal cut. The rounded corners have essentially merged into a semicircle with a radius equal to the half major axis of the ellipse as described in Figure 4b . Note that in this embodiment, the closing section has vanished into a single line 408.
- the foraminated plate 201' of Figure 3b was replaced by a stainless steel wire mesh 520.
- the diameter of the wires was 0.48mm, with a square 24/24 mesh size (24 wires per inch) in a 2/2 twilled weave.
- the minimum radius of curvature 506 in the transition region 502 was equal to 4 mm although a radius from 2 to 8 mm works equally well.
- the value of the minimum radius of curvature 508 of the base section 501 was 25 mm and is preferably in the range of 30 to 45 mm.
- the closing section is a flat disc 504.
- a knitted metal fibre fabric 512 was spot welded to the wire mesh.
- FIG. 5(c) An alternative to the third embodiment is depicted in Figure 5(c) .
- Like parts of the burner membrane according the third embodiment are identified with primed numbers.
- the transition region 502' is in the form of a circular ridge.
- the top of the ridge has a radius of curvature 506', which turns out to be the smallest radius of curvature of the transition region.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Feeding And Controlling Fuel (AREA)
Claims (9)
- Gasbrenner (200), wobei der Brenner eine Metall-Brennermembran umfasst, wobei die Membran einen Basisabschnitt (201, 401, 501), der einen kleinsten Krümmungsradius aufweist, der RBasis ist, und einen Endabschnitt (203, 408, 504) umfasst, wobei die Membran unterbrechungsfrei ist und einen Übergangsabschnitt (202, 402, 502, 502') zum Verbinden des Basisabschnitts mit dem Endabschnitt aufweist, wobei der Übergangsabschnitt einen kleinsten Krümmungsradius rÜbergang aufweist, der größer oder gleich 0,02 x RBasis und kleiner oder gleich 0,35 x RBasis ist und wobei die Brennermembran ein Gewebe (305, 512) aus geflochtenen oder gewirkten oder gewebten Fasern aus rostfreiem Stahl umfasst, wobei die Brennermembran eine tiefgezogene oder geprägte Platte, in die Löcher gebohrt sind (201'), oder ein tiefgezogenes oder geprägtes Drahtnetz (520) umfasst;
wobei das Gewebe über die tiefgezogene oder geprägte Platte, in die Löcher gebohrt sind, gezogen ist oder wobei das Gewebe von dem tiefgezogenen oder geprägten Drahtnetz getragen wird;
und wobei die Brennermembran kleine Schweißnähte umfasst. - Gasbrenner gemäß Anspruch 1, wobei die Fasern aus rostfreiem Stahl im Wesentlichen parallel zu Bündeln angeordnet sind.
- Gasbrenner gemäß Anspruch 1 oder 2, wobei das Drahtnetz durch Verflechten oder Verwirken oder Verweben in das Gewebe aus rostfreien Fasern integriert ist.
- Gasbrenner gemäß einem der Ansprüche 1 bis 3, wobei der Basisabschnitt eine Kegelstumpfform aufweist.
- Gasbrenner gemäß einem der Ansprüche 1 bis 3, wobei der Basisabschnitt eine zylindrische Form aufweist.
- Gasbrenner gemäß Anspruch 4 oder 5, wobei der Übergangsbereich Teil einer Torusoberfläche ist, die von zwei Ebenen begrenzt wird, die senkrecht auf die Symmetrieachse des Torus stehen.
- Gasbrenner gemäß einem der Ansprüche 1 bis 3, wobei der Basisabschnitt einen polygonalen Querschnitt aufweist, wobei die Ecken des Querschnitts abgerundet sind.
- Gasbrenner gemäß einem der Ansprüche 1 bis 3, wobei der Basisabschnitt einen rechteckigen Querschnitt aufweist, wobei die Ecken des Querschnitts abgerundet sind.
- Gasbrenner gemäß einem der Ansprüche 1 bis 3, wobei der Basisabschnitt ein Pyramidenstumpf ist, wobei die Pyramide abgerundete Kanten aufweist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04714333.4A EP1616128B1 (de) | 2003-04-18 | 2004-02-25 | Brenner mit einer metallmembran |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03101079 | 2003-04-18 | ||
PCT/EP2004/050205 WO2004092647A1 (en) | 2003-04-18 | 2004-02-25 | A metal burner membrane |
EP04714333.4A EP1616128B1 (de) | 2003-04-18 | 2004-02-25 | Brenner mit einer metallmembran |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1616128A1 EP1616128A1 (de) | 2006-01-18 |
EP1616128B1 true EP1616128B1 (de) | 2016-05-04 |
Family
ID=33185953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04714333.4A Expired - Lifetime EP1616128B1 (de) | 2003-04-18 | 2004-02-25 | Brenner mit einer metallmembran |
Country Status (5)
Country | Link |
---|---|
US (2) | US20060251998A1 (de) |
EP (1) | EP1616128B1 (de) |
KR (2) | KR20050122273A (de) |
CN (2) | CN101545634B (de) |
WO (1) | WO2004092647A1 (de) |
Families Citing this family (33)
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WO2007085618A1 (en) * | 2006-01-25 | 2007-08-02 | Nv Bekaert Sa | Convective system for a dryer installation |
ITMI20060147A1 (it) * | 2006-01-27 | 2007-07-28 | Worgas Bruciatori Srl | Dispositivo bruciatore a potenza elevata |
WO2008055829A1 (en) | 2006-11-08 | 2008-05-15 | Nv Bekaert Sa | Modular flare stack and method of flaring waste gas |
WO2009053247A1 (en) * | 2007-10-25 | 2009-04-30 | Bekaert Combust. Technol. B.V. | Heat exchanger element with a combustion chamber for a low co and nox emission combustor |
US8197251B2 (en) | 2007-12-17 | 2012-06-12 | Bekaert Combustion Technology B.V. | Premix burner |
JP2013513774A (ja) * | 2009-12-11 | 2013-04-22 | ベーカート・コンバスチョン・テクノロジー・ベスローテン・フェンノートシャップ | 低多孔率バーナデッキを有するバーナ |
TWI570362B (zh) | 2010-12-20 | 2017-02-11 | 索拉羅尼克斯股份有限公司 | 具有浮凸屏之氣體加熱輻射發射體 |
IT1406865B1 (it) * | 2011-01-12 | 2014-03-14 | Worgas Bruciatori Srl | Bruciatore ad elevata stabilita' perimetrale |
NL2007646C2 (en) * | 2011-09-16 | 2013-03-19 | Micro Turbine Technology B V | Braided burner for premixed gas-phase combustion. |
EP2636951A1 (de) | 2012-03-07 | 2013-09-11 | Flare Industries, LLC | Vorrichtung und Verfahren zum Abfackeln von Abgas |
EP2844920B1 (de) | 2012-05-03 | 2016-05-18 | Bekaert Combustion Technology B.V. | Gasvormischungsbrenner |
JP6029857B2 (ja) * | 2012-05-23 | 2016-11-24 | 株式会社パロマ | 濃淡バーナ |
ITMI20121643A1 (it) * | 2012-10-02 | 2014-04-03 | Worgas Bruciatori Srl | Bruciatore con diffusore in tessuto |
EP2914903B1 (de) * | 2012-10-31 | 2018-03-21 | Bekaert Combustion Technology B.V. | Gasvormischbrenner |
EP2976576B1 (de) | 2013-01-25 | 2019-09-18 | Beckett Gas, Inc. | BRENNER MIT EXTREM NIEDRIGEN NOx-WERTEN |
EP2789911B1 (de) | 2013-04-09 | 2016-07-20 | Bekaert Combustion Technology B.V. | Gasvormischbrenner |
EP3017099B1 (de) | 2013-07-02 | 2019-05-22 | Bekaert Combustion Technology B.V. | Gasvormischbrenner |
US20160123580A1 (en) * | 2013-07-02 | 2016-05-05 | Bekaert Combustion Technology B.V. | Gas premix burner |
ITMI20131968A1 (it) * | 2013-11-26 | 2015-05-27 | Worgas Bruciatori Srl | Bruciatore |
US20150192291A1 (en) * | 2014-01-06 | 2015-07-09 | Rheem Manufacturing Company | Multi-Cone Fuel Burner Apparatus For Multi-Tube Heat Exchanger |
GB2525873A (en) * | 2014-05-07 | 2015-11-11 | Worgas Burners Ltd | Gas burner |
WO2018215241A1 (en) * | 2017-05-24 | 2018-11-29 | Bekaert Combustion Technology B.V. | Inwardly firing premix gas burner |
WO2019011736A1 (en) * | 2017-07-13 | 2019-01-17 | Bekaert Combustion Technology B.V. | GAS PREMIX BURNER |
WO2019011738A1 (en) * | 2017-07-13 | 2019-01-17 | Bekaert Combustion Technology B.V. | PREMIX GAS BURNER |
EP3652484A1 (de) * | 2017-07-13 | 2020-05-20 | Bekaert Combustion Technology B.V. | Vorgemischgasbrenner |
EP3755946A1 (de) * | 2018-02-23 | 2020-12-30 | Fulton Group N.A., Inc. | Vorgemischkraftstoffbrenner mit einwärtsbefeuerung |
WO2019165378A1 (en) * | 2018-02-23 | 2019-08-29 | Fulton Group N.A., Inc. | Compact inward-firing premix mesh surface combustion system, and fluid heating system and packaged burner system including the same |
US11236903B2 (en) | 2018-02-23 | 2022-02-01 | Fulton Group N.A., Inc. | Compact inward-firing premix fuel combustion system, and fluid heating system and packaged burner system including the same |
WO2019207559A2 (en) * | 2018-04-13 | 2019-10-31 | Fulton Group N.A., Inc. | Compact dual-fuel combustion system, and fluid heating system and packaged burner system including the same |
NL2021261B1 (nl) * | 2018-07-06 | 2020-01-15 | Bekaert Combustion Tech Bv | Warmtecel voor de opwarming van water door middel van warmteoverdracht van rookgassen |
EP4088064A1 (de) | 2020-01-08 | 2022-11-16 | Bekaert Combustion Technology B.V. | Gasbrenner und heizgerät |
NL2024623B1 (en) | 2020-01-08 | 2021-09-07 | Bekaert Combustion Tech Bv | Gas burner and heating appliance |
NL2028637B1 (en) | 2021-07-06 | 2023-01-12 | Bekaert Combustion Tech Bv | Premix gas burner system and method |
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2004
- 2004-02-25 KR KR1020057019833A patent/KR20050122273A/ko active Search and Examination
- 2004-02-25 CN CN2009101325495A patent/CN101545634B/zh not_active Expired - Lifetime
- 2004-02-25 CN CNB2004800104429A patent/CN100557310C/zh not_active Expired - Lifetime
- 2004-02-25 KR KR1020117017615A patent/KR20110104080A/ko not_active Application Discontinuation
- 2004-02-25 US US10/553,405 patent/US20060251998A1/en not_active Abandoned
- 2004-02-25 WO PCT/EP2004/050205 patent/WO2004092647A1/en active Application Filing
- 2004-02-25 EP EP04714333.4A patent/EP1616128B1/de not_active Expired - Lifetime
-
2010
- 2010-12-14 US US12/967,386 patent/US20110081621A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4480988A (en) * | 1982-05-17 | 1984-11-06 | Osaka Gas Company, Limited | Surface combustion type burner with air supply entirely as primary air |
US5203689A (en) * | 1990-10-15 | 1993-04-20 | The Marley Company | Premix boiler construction |
DE4219443A1 (de) * | 1992-06-13 | 1993-12-16 | Hans Dr Viesmann | Strahlungsbrenner für Heizkessel |
US5468143A (en) * | 1993-05-20 | 1995-11-21 | Colsman & Co. Gmbh | Gas-fueled infrared heater |
US6065963A (en) * | 1997-01-10 | 2000-05-23 | N.V. Bekaert S.A. | Conical surface burner |
Also Published As
Publication number | Publication date |
---|---|
US20110081621A1 (en) | 2011-04-07 |
CN101545634A (zh) | 2009-09-30 |
CN100557310C (zh) | 2009-11-04 |
WO2004092647A1 (en) | 2004-10-28 |
CN1777775A (zh) | 2006-05-24 |
US20060251998A1 (en) | 2006-11-09 |
KR20110104080A (ko) | 2011-09-21 |
EP1616128A1 (de) | 2006-01-18 |
CN101545634B (zh) | 2012-04-04 |
KR20050122273A (ko) | 2005-12-28 |
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