EP1840460A1 - Gasbrenner - Google Patents

Gasbrenner Download PDF

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Publication number
EP1840460A1
EP1840460A1 EP06251695A EP06251695A EP1840460A1 EP 1840460 A1 EP1840460 A1 EP 1840460A1 EP 06251695 A EP06251695 A EP 06251695A EP 06251695 A EP06251695 A EP 06251695A EP 1840460 A1 EP1840460 A1 EP 1840460A1
Authority
EP
European Patent Office
Prior art keywords
gas burner
cylindrical wall
inner rim
extending portion
circumferential inner
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.)
Withdrawn
Application number
EP06251695A
Other languages
English (en)
French (fr)
Inventor
Allan c/o Aeromatix Limited Whitaker
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
Aeromatix 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 Aeromatix Ltd filed Critical Aeromatix Ltd
Priority to EP06251695A priority Critical patent/EP1840460A1/de
Publication of EP1840460A1 publication Critical patent/EP1840460A1/de
Withdrawn legal-status Critical Current

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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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/70—Baffles or like flow-disturbing devices
    • 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
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00003—Fuel or fuel-air mixtures flow distribution devices upstream of the outlet

Definitions

  • the present invention relates to a gas burner, and particularly but not exclusively to a gas burner for use in domestic heating appliances.
  • the burner may be of the 'premix' type, meaning that all of the air required for complete combustion is mixed with the fuel gas prior to combustion.
  • Conventional premix burners include an outer cylindrical wall defining a cavity for receiving a gas and air mixture, and the gas and air mixture passes through apertures in the outer cylindrical wall for combustion.
  • An inner cylindrical wall can be located inside, and secured to, the outer cylindrical wall and a mounting member can be provided to enable the burner to be mounted in a heating appliance.
  • a gas burner including:
  • At least part of the circumferential inner rim may be deformable to provide the radially outwardly extending part and the at least one slot may facilitate deformation to provide the radially outwardly extending part.
  • the circumferential inner rim may include a plurality of said slots extending therearound, and the slots may be equispaced around the circumferential inner rim.
  • the plurality of slots may be arranged so that the circumferential inner rim is defined by a plurality of projections.
  • the projections may be equispaced around the circumferential inner rim.
  • Each projection may include a radially inwardly extending portion which may extend in a radially inwards direction.
  • Each projection may include an axially extending portion and the axially extending portion may extend in an axial direction outwardly away from said one end of the outer substantially cylindrical wall and outwardly away from the internal cavity.
  • Each projection may include a radially outwardly extending portion which may extend in a radially outwards direction.
  • Each projection may have a generally C-shaped configuration and this configuration may be defined by the radially inwardly extending portion, the axially extending portion and the radially outwardly extending portion.
  • Part of the axially extending portion of each of the plurality of projections may be arranged to be deformed in a radially outwards direction, possibly to thereby define the radially outwardly extending portion.
  • the axially extending portions of the plurality of projections may together define the substantially circumferential inner rim of the substantially circular opening in the securing member.
  • the axially extending portions may be arranged to facilitate location of the circular flange of the inner substantially cylindrical wall in the substantially circular opening.
  • the gas burner may include a mounting member, possibly for mounting the gas burner in a heating appliance, and the mounting member may be secured to the burner by the securing member.
  • the mounting member may include a substantially circumferential inner rim which may be located, in use, between the radially inwardly extending portion and the radially outwardly extending portion of each of the plurality of projections to thereby secure the mounting member to the gas burner.
  • each of the plurality of projections may define a circumferential securing channel, and the circumferential inner rim of the mounting member may be located in the circumferential securing channel to secure the mounting member to the gas burner.
  • a gas burner in accordance with any of the preceding definitions of the first aspect of the invention, the method comprising:
  • Step (ii) may include bending the substantially circular flange in a radially outwards direction.
  • Step (ii) may be performed by a deformation operation, such as a spinning operation.
  • the method may comprise locating the substantially circumferential inner rim of the mounting member radially outwardly of the axially extending portion of each of the plurality of projections, and may thereafter comprise performing step (ii), wherein step (ii) may cause deformation of part of the axially extending portion of each of the plurality of projections to form said radially outwardly extending portion.
  • each of the plurality of projections formed by step (ii) may define a circumferential securing channel, and the circumferential inner rim of the mounting member may be located in the circumferential securing channel.
  • a heating appliance including a gas burner according to any of the preceding definitions of the first aspect of the invention or a gas burner manufactured in accordance with any of the preceding definitions of the second aspect of the invention.
  • Fig. 1 illustrates a gas burner 10 located within a heating appliance including a combustion zone 12 and a heat exchanger 14.
  • the gas burner 10 is of a known design and is described here to facilitate understanding of the present invention, described later with reference to Figs. 2 to 6.
  • the gas burner 10 includes an outer cylindrical wall 16 defining an internal cavity 20 and a concentric inner cylindrical wall 18, for example in the form of a restrictor tube, located inside the internal cavity 20.
  • An end cap 22 is attached to the outer cylindrical wall 16 and closes one axial end of the gas burner 10.
  • a mounting member 24 is attached to the other axial end of the outer cylindrical wall 16 and extends radially outwardly therefrom.
  • the gas burner 10 is attached to a housing 25 of the heating appliance via the mounting member 24.
  • the outer cylindrical wall 16 is provided with a plurality of apertures in the form of flame ports 26, just a few of which are illustrated in Fig. 1.
  • the flame ports 26 are about 0.8mm in diameter and their centres are about 2 to 3mm apart.
  • the flame ports 26 may be arranged evenly over the whole of the outer cylindrical wall 16.
  • a gas and air mixture is fed into the internal cavity 20, and this passes through the flame ports 26 in the outer cylindrical wall 16 to the outer surface 16a thereof and into the combustion zone 12, where combustion takes place.
  • the heat thereby produced is utilised via the heat exchanger 14, with the flue products passing out of the unit as indicated by the arrow A.
  • the inner cylindrical wall 18 is in the form of a restrictor tube, its purpose is to eliminate the interaction of sound pressure waves, created as a result of combustion, with the incoming gas and air mixture to thereby reduce the likelihood of resonance and consequent flame and flow instability.
  • Figs. 2, 5 and 6 illustrate a gas burner 30 according to one embodiment of the invention.
  • the gas burner 30 is similar to the known gas burner 10 described above, and corresponding components are therefore designated with corresponding reference numerals.
  • the gas burner 30 includes an outer cylindrical wall 16, defining an internal cavity 20 and including a plurality of flame ports 26, and a concentric inner cylindrical wall 18 open at both axial ends thereof, for example in the form of a restrictor tube.
  • the gas burner 30 includes a securing member 32, the purpose of which will be described later in the specification, and this is attached to one of the axial ends 33 of the outer cylindrical wall 16, by a suitable deformation operation, such as spinning, in which the circumferential outer edge 34 of the securing member 32 is bent or folded over the circumferential edge of the of the axial end 33 of the outer cylindrical wall 16.
  • the securing member 32 has a generally annular configuration and includes a circumferential inner rim 36 defining a circular opening 38.
  • the circumferential inner rim 36 includes a plurality of equispaced slots 40 extending therearound and the circumferential inner rim 36 is thus defined by a plurality of equispaced projections 42.
  • each projection 42 is generally L-shaped and includes a radially inwardly extending portion 44 and an axially extending portion 46 which extends in an axial direction outwardly away from the axial end 33 of the outer cylindrical wall 16 and away from the internal cavity 20.
  • the inner cylindrical wall 18 includes a circular flange 48 at an axial end 50 thereof and the flange 48 is locatable inside the circumferential inner rim 36 of the securing member 32 so that it extends through the circular opening 38.
  • the inner cylindrical wall 18 includes a circumferential radially outwardly projecting ridge 52 which partly defines the flange 48 and in particular limits the extent to which the inner cylindrical wall 18 can extend through the circular opening 38.
  • the circular flange 48 is deformed, for example by a spinning operation, to bend it in a radially outwards direction to the position shown in Fig. 6.
  • the projections 42 are also deformed, and in particular the axially extending portion 46 of each projection 42 is bent in the radially outwards direction.
  • Each projection 42 is thus defined by the radially inwardly extending portion 44, part of the original axially extending portion 46 and a radially outwardly extending portion 54, and together these define a circumferentially extending securing channel 56.
  • the radially extending securing channel 56 is to secure the mounting member 24 to the burner 30 without the need for welding or similar operations.
  • the mounting member 24 defines a circumferential inner rim 58 which, when the burner 30 is in the part-manufactured condition, is located adjacent to, and radially outwardly of, the axially extending portions 46 of the projections 42.
  • each projection 42 deforms around the circumferential inner rim 58 to define the radially outwardly extending portion 54, thereby resulting in the formation of the circumferentially extending securing channel 56 with the circumferential inner rim 58 located therein.
  • a securing member 32 having a circumferential inner rim 36 including a plurality of slots 40 provides significant advantages over the prior art.
  • the force required to bend the circular flange 48 of the inner cylindrical wall 18 in the radially outwards direction to secure it to the securing member 32, and to thereby secure the mounting member 24 to the burner 30, is substantially reduced when compared to a securing member without slots.
  • the force required to bend the projections 42 is substantially less than the force that would be required to bend a securing member having a continuous circumferential inner rim defined, for example, by a continuous circumferential radially inwardly extending portion 44 and a continuous circumferential axially extending portion 46.
  • the securing member 32 may include any suitable number of slots 40, and hence projections 42.
  • the projections 42 may have a different configuration to that illustrated in the drawings.
  • the slots 40, and hence projections 42, may not be equispaced.
  • the securing member 32 may be secured to the outer cylindrical wall 16 by a method other than a spinning operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP06251695A 2006-03-29 2006-03-29 Gasbrenner Withdrawn EP1840460A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06251695A EP1840460A1 (de) 2006-03-29 2006-03-29 Gasbrenner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06251695A EP1840460A1 (de) 2006-03-29 2006-03-29 Gasbrenner

Publications (1)

Publication Number Publication Date
EP1840460A1 true EP1840460A1 (de) 2007-10-03

Family

ID=36951400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06251695A Withdrawn EP1840460A1 (de) 2006-03-29 2006-03-29 Gasbrenner

Country Status (1)

Country Link
EP (1) EP1840460A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2037175A2 (de) * 2007-09-12 2009-03-18 Polidoro S.p.A. Vormischbrenner
WO2009112909A2 (en) * 2008-03-10 2009-09-17 Worgas-Bruciatori - S.R.L. Burner provided with noise reducing means
GB2503265A (en) * 2012-06-21 2013-12-25 Worgas Burners Ltd Flanged gas burner assembly
EP2746658A1 (de) * 2012-12-19 2014-06-25 Worgas Burners Limited Gasbrenner
GB2510173A (en) * 2013-01-28 2014-07-30 Worgas Burners Ltd Reduced noise burner
ITMI20131481A1 (it) * 2013-09-09 2015-03-10 Worgas Bruciatori Srl Bruciatore ad isolamento passivo, in particolare per un motore a combustione esterna
WO2019011741A1 (en) * 2017-07-13 2019-01-17 Bekaert Combustion Technology B.V. PREMIX GAS BURNER
GB2617886A (en) * 2022-04-21 2023-10-25 Francis Kennedy John Heating apparatus, burner device and method of construction

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187511A (en) * 1981-05-14 1982-11-18 Akira Muramoto Gas burner for cooking utensils
GB2149904A (en) * 1983-11-17 1985-06-19 Aeromatic Co Ltd Duplex gas burner
EP0172945A1 (de) * 1984-08-24 1986-03-05 Furigas B.V. Gasbrenner
US4960378A (en) * 1987-09-26 1990-10-02 Ruhrgas Aktiengesellschaft Gas burner
EP1087180A1 (de) * 1999-09-24 2001-03-28 Joh. Vaillant GmbH u. Co. Geschlossenes Verbrennungssystem mit Schwankungenminderungsvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187511A (en) * 1981-05-14 1982-11-18 Akira Muramoto Gas burner for cooking utensils
GB2149904A (en) * 1983-11-17 1985-06-19 Aeromatic Co Ltd Duplex gas burner
EP0172945A1 (de) * 1984-08-24 1986-03-05 Furigas B.V. Gasbrenner
US4960378A (en) * 1987-09-26 1990-10-02 Ruhrgas Aktiengesellschaft Gas burner
EP1087180A1 (de) * 1999-09-24 2001-03-28 Joh. Vaillant GmbH u. Co. Geschlossenes Verbrennungssystem mit Schwankungenminderungsvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 037 (M - 193) 15 February 1983 (1983-02-15) *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2037175B1 (de) 2007-09-12 2016-11-23 Polidoro S.p.A. Vormischbrenner
EP2037175A3 (de) * 2007-09-12 2012-11-21 Polidoro S.p.A. Vormischbrenner
EP2037175A2 (de) * 2007-09-12 2009-03-18 Polidoro S.p.A. Vormischbrenner
WO2009112909A2 (en) * 2008-03-10 2009-09-17 Worgas-Bruciatori - S.R.L. Burner provided with noise reducing means
WO2009112909A3 (en) * 2008-03-10 2010-06-10 Worgas-Bruciatori - S.R.L. Burner provided with noise reducing means
GB2503265A (en) * 2012-06-21 2013-12-25 Worgas Burners Ltd Flanged gas burner assembly
WO2013190286A1 (en) * 2012-06-21 2013-12-27 Worgas Burners Limited Gas burner
EP2746658A1 (de) * 2012-12-19 2014-06-25 Worgas Burners Limited Gasbrenner
GB2511029A (en) * 2012-12-19 2014-08-27 Worgas Burners Ltd Gas burner
EP2759768A1 (de) * 2013-01-28 2014-07-30 Worgas Burners Limited Gasbrenner
GB2510173A (en) * 2013-01-28 2014-07-30 Worgas Burners Ltd Reduced noise burner
ITMI20131481A1 (it) * 2013-09-09 2015-03-10 Worgas Bruciatori Srl Bruciatore ad isolamento passivo, in particolare per un motore a combustione esterna
WO2019011741A1 (en) * 2017-07-13 2019-01-17 Bekaert Combustion Technology B.V. PREMIX GAS BURNER
GB2617886A (en) * 2022-04-21 2023-10-25 Francis Kennedy John Heating apparatus, burner device and method of construction

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