EP2942564B1 - Gas burner - Google Patents

Gas burner Download PDF

Info

Publication number
EP2942564B1
EP2942564B1 EP15165261.7A EP15165261A EP2942564B1 EP 2942564 B1 EP2942564 B1 EP 2942564B1 EP 15165261 A EP15165261 A EP 15165261A EP 2942564 B1 EP2942564 B1 EP 2942564B1
Authority
EP
European Patent Office
Prior art keywords
gas burner
strip
flame strip
metal fibre
frame member
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.)
Not-in-force
Application number
EP15165261.7A
Other languages
German (de)
French (fr)
Other versions
EP2942564A1 (en
Inventor
Marek Leopold SZADURSKI
David Michael Bruce Killer
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 Ltd
Original Assignee
Worgas Burners Ltd
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 Worgas Burners Ltd filed Critical Worgas Burners Ltd
Publication of EP2942564A1 publication Critical patent/EP2942564A1/en
Application granted granted Critical
Publication of EP2942564B1 publication Critical patent/EP2942564B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—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
    • 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
    • F23D2210/00—Noise abatement
    • F23D2210/101—Noise abatement using noise dampening material
    • 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

  • This invention concerns a gas burner.
  • US2012/0000456 A1 describes a gas burner according to the preamble of claim 1.
  • a gas burner including a body defining a chamber, the body comprising a profiled integral member, with a plurality of ports being provided extending through a face of the body to provide a flame strip, with a combustion surface on the external side of the flame strip, the gas burner also including a frame member which is mounted to the body by a mechanical joint, characterised in that the gas burner is made of just the body, the frame member, and a layer of metal fibre mounted on the exterior side of the flame strip, the frame member comprising a peripheral strip defining a central opening, with a pair of support members extending across the opening, a flange being provided around the body, the body being mounted to the frame member by the edges of the peripheral strip being pressed around the flange.
  • the body may comprise an at least generally planar part defining the flame strip, and side walls extending from the planar part, with the flange provided at opposite ends of the side walls from the planar part.
  • the flame strip may be domed.
  • the metal fibre may be provided on only a part of the flame strip.
  • the metal fibre may be provided on just a central part of the flame strip.
  • the metal fibre may be mounted to the body by spot welding.
  • the body and frame member may be mounted together by pressing.
  • a flange may be provided on the body, and the frame member may be profiled to engage on either side of the flange to provide a mechanical joint therebetween.
  • Metal fibre may be mounted on an external side of the flame strip.
  • the metal fibre may be mounted on the flame strip by spot welding.
  • the metal fibre may be mounted on the flame strip prior to shaping of the planar material to form the body.
  • Figs. 1 to 3 show a gas burner 10 of a type useable for instance in a central heating boiler, a cooking appliance or otherwise.
  • the gas burner comprises a body 12 formed of an integral profiled sheet 14 of an appropriate metal.
  • the body 12 has an upper slightly raised area which defines a flame strip 16 with a combustion surface on the external side of the flame strip 16.
  • a layer of metal fibre 17 is mounted on the flame strip 14.
  • a plurality of ports 18 are provided through the flame strip 16.
  • the ports 18 may be in the form of circular holes or slots, or a combination of the two, or other shaped openings.
  • a flange 20 is provided around the body 12 at the edges thereof away from the flame strip 16.
  • a frame 22 is provided on the burner 10.
  • the frame 22 comprises a peripheral strip 24 defining a central opening 26, with a pair of support members 28 extending across the opening 26.
  • the body 12 is mounted to the frame 22 by the edges of the peripheral strip, being pressed around the flange 20.
  • the ports 18 may be formed in the sheet 14.
  • the sheet 14 can then be profiled to form the body 12.
  • the frame 22 can be mounted on to the body by pressing edges of the frame on to the flange as shown in Fig. 1 .
  • the metal fibre 17 extends across just a central portion of the flame strip 16, as is indicated by the lighter shaded ports 18 in Fig. 3 , with a row of ports 18 at each end and side not covered by the metal fibre 17.
  • Fig. 4 shows a second gas burner 28 with a layer of metal fibre 30 extending wholly across the flame strip 16 and covering all of the ports 18.
  • the metal fibre 17, 30 may be mounted to the body 12 by spot welding, and could be mounted on to the flame strip 16 during manufacture and prior to shaping of the body 12.
  • the metal fibre 17, 30 is required to only cover a part of the flame strip 16, and may for instance only be required to cover a central part of the flame strip 16.
  • the metal fibre is used to reduce or substantially eliminate noise or resonance during use of the burner. Leaving some of the ports uncovered by the metal fibre, provides for a retention of flame for instance with lean or poor gases, and thereby avoids nuisance shutdown of the burner.

Landscapes

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

Description

  • This invention concerns a gas burner.
  • A wide range of gas burner designs have been proposed over the years. Such gas burners can be used in a range of applications including cooking and heating.
  • For instance, US2012/0000456 A1 describes a gas burner according to the preamble of claim 1.
  • According to a first aspect of the invention there is provided a gas burner, the gas burner including a body defining a chamber, the body comprising a profiled integral member, with a plurality of ports being provided extending through a face of the body to provide a flame strip, with a combustion surface on the external side of the flame strip, the gas burner also including a frame member which is mounted to the body by a mechanical joint, characterised in that the gas burner is made of just the body, the frame member, and a layer of metal fibre mounted on the exterior side of the flame strip, the frame member comprising a peripheral strip defining a central opening, with a pair of support members extending across the opening, a flange being provided around the body, the body being mounted to the frame member by the edges of the peripheral strip being pressed around the flange.
  • The body may comprise an at least generally planar part defining the flame strip, and side walls extending from the planar part, with the flange provided at opposite ends of the side walls from the planar part. The flame strip may be domed.
  • The metal fibre may be provided on only a part of the flame strip. The metal fibre may be provided on just a central part of the flame strip. The metal fibre may be mounted to the body by spot welding.
  • According to a second aspect of the invention there is provided a method of forming a gas burner according to claim 7.
  • The body and frame member may be mounted together by pressing.
  • A flange may be provided on the body, and the frame member may be profiled to engage on either side of the flange to provide a mechanical joint therebetween.
  • Metal fibre may be mounted on an external side of the flame strip. The metal fibre may be mounted on the flame strip by spot welding. The metal fibre may be mounted on the flame strip prior to shaping of the planar material to form the body.
  • Embodiments of the present invention will now be described by way of example only and with reference to the accompanying drawings.
    • Fig. 1 is a sectional view through part of a first gas burner according to the invention;
    • Fig. 2 is a diagrammatic cutaway perspective view of the burner of Fig. 1;
    • Fig. 3 is a plan view of the burner of Fig. 1; and
    • Fig. 4 is a similar view to Fig. 3 but of a second burner according to the invention.
  • Figs. 1 to 3 show a gas burner 10 of a type useable for instance in a central heating boiler, a cooking appliance or otherwise. The gas burner comprises a body 12 formed of an integral profiled sheet 14 of an appropriate metal. The body 12 has an upper slightly raised area which defines a flame strip 16 with a combustion surface on the external side of the flame strip 16.
  • A layer of metal fibre 17 is mounted on the flame strip 14.
  • A plurality of ports 18 are provided through the flame strip 16. The ports 18 may be in the form of circular holes or slots, or a combination of the two, or other shaped openings. A flange 20 is provided around the body 12 at the edges thereof away from the flame strip 16.
  • A frame 22 is provided on the burner 10. The frame 22 comprises a peripheral strip 24 defining a central opening 26, with a pair of support members 28 extending across the opening 26. The body 12 is mounted to the frame 22 by the edges of the peripheral strip, being pressed around the flange 20.
  • This therefore provides a gas burner made of just two components the body 12 and frame 22, and a layer of metal fibre 17, with the body 12 mounted to the frame 20 just by mechanical means, alleviating the need for any welding or similar processes. Providing an integral flame strip with the body, means that only two components are required, and there is no requirement for mounting a separate flame strip to the body.
  • During manufacture the ports 18 may be formed in the sheet 14. The sheet 14 can then be profiled to form the body 12. The frame 22 can be mounted on to the body by pressing edges of the frame on to the flange as shown in Fig. 1.
  • In many situations it may be required to provide metal fibre on at least part of the flame strip 16.
  • In Figs. 1 to 3 the metal fibre 17 extends across just a central portion of the flame strip 16, as is indicated by the lighter shaded ports 18 in Fig. 3, with a row of ports 18 at each end and side not covered by the metal fibre 17.
  • Fig. 4 shows a second gas burner 28 with a layer of metal fibre 30 extending wholly across the flame strip 16 and covering all of the ports 18. The metal fibre 17, 30 may be mounted to the body 12 by spot welding, and could be mounted on to the flame strip 16 during manufacture and prior to shaping of the body 12. As shown in Fig. 4, in some instances the metal fibre 17, 30 is required to only cover a part of the flame strip 16, and may for instance only be required to cover a central part of the flame strip 16.
  • The metal fibre is used to reduce or substantially eliminate noise or resonance during use of the burner. Leaving some of the ports uncovered by the metal fibre, provides for a retention of flame for instance with lean or poor gases, and thereby avoids nuisance shutdown of the burner.
  • There are thus described gas burners which require a reduced number of components relative to existing designs, thereby reducing manufacturing costs. Spot welding is only required for mounting metal fibre where required, and a significant cost, time and power requirement savings are made by using pressing rather than welding to mount together the body and the frame.
  • As welding of the body does not take place it may be possible to use thinner material than would otherwise be the case for the body. The peripheral mechanical join has been found to provide an improved seal around the body and frame, relative to conventional welding.
  • Various other modifications may be made without departing from the scope of the invention. Whilst a rectangular burner is illustrated here, it is to be realised that the invention can be used with a wide range of burner shapes, sizes and types. The ports may take any appropriate form.
  • Whilst pressing the frame on to a flange of the body has been described. Other mechanical joints could be provided between the body and frames.

Claims (11)

  1. A gas burner, the gas burner 10 including a body 12 defining a chamber, the body 12 comprising a profiled integral member 14, with a plurality of ports 18 being provided extending through a face of the body 12 to provide a flame strip 16, with a combustion surface on the external side of the flame strip 16, the gas burner 10 also including a frame member 22 which is mounted to the body 12 by a mechanical joint, characterised in that the gas burner 10 is made of just the body 12, the frame member 22, and a layer of metal fibre 17 mounted on the exterior side of the flame strip 16, the frame member 22 comprising a peripheral strip 24 defining a central opening 26, with a pair of support members 28 extending across the opening, a flange 20 being provided around the body 12, the body 12 being mounted to the frame member 22 by the edges of the peripheral strip 24 being pressed around the flange 20.
  2. A gas burner according to claim 1, in which the body 12 comprises an at least generally planar part defining the flame strip 16, and side walls extending from the planar part, with the flange 20 provided at opposite ends of the side walls from the planar part.
  3. A gas burner according to claim 2, in which the flame strip 16 is domed.
  4. A gas burner according to any of the preceding claims, in which the metal fibre 17 is provided on only a part of the flame strip 16.
  5. A gas burner according to claim 4, in which the metal fibre 17 is provided on just a central part of the flame strip 16.
  6. A gas burner according to any of the preceding claims, in which the metal fibre 17 is mounted to the body 12 by spot welding.
  7. A method of forming a gas burner 10 according to any of the preceding claims, the method comprising forming a plurality of openings in a piece of planar material to define a flame strip 16 with ports 18 therethrough, mechanically shaping the planar material to define a body 12, and mounting the body 12 to a frame member 22 by forming a mechanical joint therebetween.
  8. A method according to claim 7, in which the body 12 and frame member 22 are mounted together by pressing.
  9. A method according to claims 7 or 8, in which a flange 20 is provided on the body 12, and the frame member 22 is profiled to engage on either side of the flange 20 to provide a mechanical joint therebetween.
  10. A method according to any of claims 7 to 9, in which metal fibre 17 is mounted on an external side of the flame strip 16.
  11. A method according to claim 10, in which the metal fibre 17 is mounted on the flame strip 16 by spot welding, and the metal fibre 17 may be mounted on the flame strip 16 prior to shaping of the planar material to form the body 12.
EP15165261.7A 2014-05-07 2015-04-27 Gas burner Not-in-force EP2942564B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1408002.2A GB2525873A (en) 2014-05-07 2014-05-07 Gas burner

Publications (2)

Publication Number Publication Date
EP2942564A1 EP2942564A1 (en) 2015-11-11
EP2942564B1 true EP2942564B1 (en) 2016-12-28

Family

ID=50980685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15165261.7A Not-in-force EP2942564B1 (en) 2014-05-07 2015-04-27 Gas burner

Country Status (4)

Country Link
EP (1) EP2942564B1 (en)
ES (1) ES2620460T3 (en)
GB (1) GB2525873A (en)
PT (1) PT2942564T (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6853075B2 (en) * 2017-03-13 2021-03-31 リンナイ株式会社 All primary combustion burner
EP3856447A1 (en) * 2018-10-17 2021-08-04 Beckett Thermal Solutions Ltd. Method for forming a gas burner membrane
IT202000005191A1 (en) * 2020-03-11 2021-09-11 Beckett Thermal Solutions S R L BURNER

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5520536A (en) * 1995-05-05 1996-05-28 Burner Systems International, Inc. Premixed gas burner
US6461149B1 (en) * 2000-02-22 2002-10-08 Soloranics, Inc. Gas burner with controlled thermal expansion

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1381981A (en) * 1972-01-01 1975-01-29 Adaptogas Ltd Natural gas burner units
GB8531466D0 (en) * 1985-12-20 1986-02-05 Bray & Co Ltd Geo Longitudinal section gas burner
ATE174681T1 (en) * 1992-03-03 1999-01-15 Bekaert Sa Nv POROUS METAL FIBER PLATE
NL9201847A (en) * 1992-10-23 1994-05-16 Supergas Bv Mesh burner.
DE59409120D1 (en) * 1993-12-06 2000-03-09 Papst Motoren Gmbh & Co Kg Burner blower for gas premix burners
GB2302401B (en) * 1995-06-15 1999-08-04 British Gas Plc Fuel fired burners
DE69810464T2 (en) * 1998-08-28 2009-09-24 N.V. Bekaert S.A. Wavy diaphragm for radiant gas burners
ES2204016T3 (en) * 1999-03-18 2004-04-16 Worgas Bruciatori S.R.L. TUBULAR BURNER.
GB2388182A (en) * 2002-04-30 2003-11-05 Thermaco Ltd A burner with an internal venturi arrangement
CN100557310C (en) * 2003-04-18 2009-11-04 贝卡尔特股份有限公司 Gas combustion chamber
FR2942866B1 (en) * 2009-03-06 2012-03-23 Mer Joseph Le INTEGRATED BURNER DOOR FOR HEATING APPARATUS

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5520536A (en) * 1995-05-05 1996-05-28 Burner Systems International, Inc. Premixed gas burner
US6461149B1 (en) * 2000-02-22 2002-10-08 Soloranics, Inc. Gas burner with controlled thermal expansion

Also Published As

Publication number Publication date
ES2620460T3 (en) 2017-06-28
GB201408002D0 (en) 2014-06-18
EP2942564A1 (en) 2015-11-11
PT2942564T (en) 2017-04-03
GB2525873A (en) 2015-11-11

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