EP0597645A1 - Brenner für gasbeheizte Geräte - Google Patents

Brenner für gasbeheizte Geräte Download PDF

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Publication number
EP0597645A1
EP0597645A1 EP93308880A EP93308880A EP0597645A1 EP 0597645 A1 EP0597645 A1 EP 0597645A1 EP 93308880 A EP93308880 A EP 93308880A EP 93308880 A EP93308880 A EP 93308880A EP 0597645 A1 EP0597645 A1 EP 0597645A1
Authority
EP
European Patent Office
Prior art keywords
burner
sections
gas
sheet material
port
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Withdrawn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
EP93308880A
Other languages
English (en)
French (fr)
Inventor
Martin Lesley Smith
Geoffrey Richard Wathen
Donald Whitehouse
Paul Alan Gillam
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.)
Valor Ltd
Original Assignee
Valor 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 Valor Ltd filed Critical Valor Ltd
Publication of EP0597645A1 publication Critical patent/EP0597645A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • 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
    • F23D14/045—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 a plurality of burner bars assembled together, e.g. in a grid-like arrangement
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2207/00—Ignition devices associated with burner
    • 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
    • F23D2900/14—Special features of gas burners
    • F23D2900/14003—Special features of gas burners with more than one nozzle

Definitions

  • the present invention relates to a burner for use in a gas appliance.
  • the present invention relates to a pilot burner for use in a gas-fired heater, the pilot burner being used to light one or more main gas burners of the gas-fired heater.
  • each ribbon burner comprising a generally horizontally arranged hollow tubular member with a row of burner ports provided in an upper region of the tubular member, along the major part of the length of the tubular member.
  • One ribbon burner is located towards the front of the heater and the other towards the rear of the heater and at a higher level than the front burner.
  • a pilot burner which can be ignited by, for example, a piezo electric spark device, is located towards one end region of the front burner and is designed to burn a gas/air mix and provide a single flame across the ribbon burner ports at said one end region of the front burner.
  • a cross-lighting burner extends from a point part way along the rear burner as a lateral, hollow tubular extension of the rear burner, to a point adjacent the front burner.
  • This cross-lighting burner has a series of ports along its length so that when the gas/air mix is applied to the rear burner, the gas/air mix issues from the ports of the cross lighting burner and the flames of the front burner ignite the gas/air mix issuing from the ports of the cross-lighting burner to then ignite the rear burner. Ignition is not, however, as efficient as might be desired.
  • a burner for a gas fired appliance comprising a gas/air mix supply passage which connects with at least two burner passages, said passages being formed between two sections of sheet material which are secured together, each burner passage ending in a burner port, said burner ports being spaced apart from each other and interconnected by an open groove, which is formed by spaced apart adjacent edge regions of said sections of sheet material, the gas/air mix supply passage formed by said sections of sheet material, at least partially defining a primary aeration port.
  • two burner passages are provided with the burner being constructed as a one-piece metal pressing which is folded and then secured by clinching outer flanges.
  • manufacture could be achieved by two generally planar pressings secured together.
  • the open groove is formed by spaced apart adjacent end edge regions of the folded or two-part construction.
  • the pressing(s) is preferably manufactured from stainless steel, the pressed construction allowing the formation of a venturi in a cost effective manner in the gas/air mix supply passage, which in conjunction with primary aeration apertures in the form of slots around a neat gas injector ensures the required gas/air mix is achieved to ensure the desired flame pattern and combustion performance.
  • the pilot burner is secured to a mounting bracket in a gas-fired heater together with an igniter, thermocouple and the neat gas injector.
  • the two burner ports are preferably each located adjacent to an end region of a respective elongate ribbon burner of the gas-fired heater, said ribbon burners extending generally horizontally and parallel to each other.
  • the burner of the present invention can, of course, be used as a pilot burner to ignite other types of burner.
  • the spark igniter is located adjacent to one burner port and the thermocouple is located adjacent to the other burner port so that any flame issuing from said other burner port will embrace the thermocouple.
  • Initial gas flow to the pilot burner is preferably achieved by manually de-pressing a flame failure magnet valve via a control spindle of a gas supply valve.
  • the gas thus flows to the neat gas injector, the gas issuing therefrom collecting air and the gas/air mix flowing along the supply passage of the pilot burner to the said burner passages and ports.
  • the igniter By actuating the igniter the gas/air mix issuing from said one burner port is ignited and the resultant conical flame whilst continuing to burn, runs along the open groove to ignite the gas/air mix issuing from the other burner port.
  • This second pilot flame embraces the thermocouple which then holds the flame failure magnet valve open so that the two pilot flames continue to burn.
  • the main ribbon burners of the gas-fire heater can thus be positively ignited as and when desired, the respective pilot flames playing directly on the end regions of the respective ribbon burners.
  • burner passages are provided, the burner passages being connected with a common gas/air mix supply passage and being arranged such that their respective burner ports are spaced apart from each other, preferably equi-spaced apart, and in a line.
  • the ports can be arranged in any desired arrangement, e.g. on a curve.
  • the burner of the present invention is thus cost-effective, as it can provide both a pilot and for cross-lighting between any number of main burners in a gas-fired heater or other gas appliance. Also the burner of the present invention may be used as a flame effect burner.
  • a pilot burner constructed in accordance with the present invention comprises a one-piece metal pressing which is folded at 1, with the sections or halves 3,5 being secured together by outer edge flanges 7 in one half 3 being folded over and clinched to the edge regions of the other half 5 and by rivets 8. Additionally, the two halves 3,5 are correctly located against each other via two holes 29 provided in each half, the corresponding holes 29 in the respective halves 3,5 being coaxially aligned with each other. To facilitate alignment of the holes the rims of the holes in said one half 3 are extruded so as to extend through the aligned plain holes in the other half 5.
  • the supply passage 13 is formed with a venturi 15 formed by the pressed deformation of one or both of the halves 3,5, and an inlet 17 into which a neat gas injector (not shown) is, in use, inserted, primary aeration apertures in the form of side slots 19 cut in the halves 3,5, providing the required primary aeration of the injected gas.
  • a neat gas injector (not shown) is, in use, inserted, primary aeration apertures in the form of side slots 19 cut in the halves 3,5, providing the required primary aeration of the injected gas.
  • an adjustable aeration collar 20 is provided, this collar being slidable along edges X and Y to adjust the size of the slots 19.
  • a neat gas injector together with the inlet 17 of the gas/air mix supply passage 19 form an annular primary aeration aperture.
  • the burner passages 9,11 each terminate at a burner port 21,23, the burner ports 21,23 being located at opposite ends of an upper edge 25 of the preferred embodiment of the present invention, and directed in generally opposite directions.
  • This upper edge 25 is formed with an open groove 27 (see Fig.2) which is formed between the halves 3,5, rivets 8 and secured holes 29, holding the halves 3,5 together in a gas-tight manner below the open groove 27, this open groove 27 interconnecting the two spaced-apart burner ports 21,23, and being formed by the holes through which the rivets 8 pass in said one half 3, being provided in indented portions in said one half 3, said indented portions being indented to provide the desired width for slot 27.
  • Figs. 1 and 2 can be installed in a gas-fired heater as shown in Figs. 3 and 4 of the accompanying drawings.
  • screws are located through the holes 29, which enable the pilot burner to be screwed to a mounting bracket 31, to which an igniter 33, a thermocouple 35 and a gas-injector (not shown) are likewise attached.
  • burner port 23 is arranged so that a flame produced at this point will embrace thermocouple 35 and also the burner ports 37 of a main burner 39 of the heater, and burner port 21 is arranged adjacent to igniter 33 and so that a flame produced at this point will pass across the burner ports 41 of another main burner 43.
  • initial gas flow to the pilot burner is achieved by manually depressing a flame failure magnet valve (not shown) via a control spindle 45 of a gas supply tap 47. Gas is thus injected into the supply passage 13 of the pilot burner and aerated via slots 19, the resulting gas/air mix being homogenised by the venturi 15 and passing along supply passage 13 into respective burner passages 9,11.
  • the igniter 33 is then actuated to ignite the gas/air mix issuing from burner passage 9 via port 21, the resulting flame passing over main burner 43.
  • pilot burner Whilst the construction of the preferred embodiment of pilot burner is constructed as a one-piece metal pressing which is folded and clinched together, the pilot burner can alternatively be manufactured as two halves, which are each pressed and then secured together, e.g. by clinching or welding.
  • an alternative embodiment of the present invention illustrated in Fig.5, has two additional intermediate burner passages 49,51, the respective ports 21,53,55,23 being spaced apart from each other in a line, and interconnected by the open groove 27.
  • This construction thus provides for easy lighting of the four pilot flames and positive ignition of one or more of four main burners, as and when required, each pilot flame being associated with a particular main burner.
  • the burner ports 21,23; 21,53; 55,23 of the above described embodiments of the present invention are located on a straight line
  • the ports interconnected by the open groove 27 can alternatively be located on a curved or angled path if desired for a particular installation (see ports 57,59,61 in Fig.6).
  • the present invention can thus allow prominent view of the pilot flames therefore clearly showing the consumer that ignition has been achieved.
  • the very narrow cross-lighting passage, i.e. groove 27, ensures that overlying simulated fuel beds do not have a tendency to soot and improved combustion is achieved.
  • a larger proportion of the gas input can be directed to achieve the desired output and visual appearance of the fire, as the cross-lighting section of the present invention requires less gas input than the previously used arrangement.
  • the burner of the present invention is described hereinabove as a pilot burner, the burner can alternatively be used as a flame effect burner, used to enhance the realism of a simulated solid fuel gas fired heater.
  • the present invention thus provides a burner which has, in use, a number of cross-lit flames, with the pressed construction described hereabove having a number of further advantages in respect of manufacturing cost and stable performance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP93308880A 1992-11-07 1993-11-08 Brenner für gasbeheizte Geräte Withdrawn EP0597645A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9223384 1992-11-07
GB929223384A GB9223384D0 (en) 1992-11-07 1992-11-07 Improvements relating to pilot burners for gas appliances

Publications (1)

Publication Number Publication Date
EP0597645A1 true EP0597645A1 (de) 1994-05-18

Family

ID=10724715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93308880A Withdrawn EP0597645A1 (de) 1992-11-07 1993-11-08 Brenner für gasbeheizte Geräte

Country Status (4)

Country Link
EP (1) EP0597645A1 (de)
AU (1) AU5048293A (de)
CA (1) CA2102548A1 (de)
GB (1) GB9223384D0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0967435A1 (de) * 1998-06-26 1999-12-29 Truma Gerätetechnik GmbH & Co. Zündbrenner
US20130048764A1 (en) * 2011-08-31 2013-02-28 Beckett Gas, Inc. Inshot gas burner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259170A (en) * 1964-06-12 1966-07-05 Mcquay Norris Mfg Co Gas burner
DE1264364B (de) * 1966-03-22 1968-03-28 Roger Guerel Verfahren zum Herstellen von Brennern
DE2000813A1 (de) * 1969-01-09 1970-07-23 Saunier Duval Zuendflammenbrenner fuer schnellerhitzte Gasboiler und Gasbadeoefen
GB1331186A (en) * 1971-04-22 1973-09-26 Sagardui Pilot burner for gas appliances
GB2184532A (en) * 1985-12-17 1987-06-24 Bray & Co Ltd Geo Flame effect burner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259170A (en) * 1964-06-12 1966-07-05 Mcquay Norris Mfg Co Gas burner
DE1264364B (de) * 1966-03-22 1968-03-28 Roger Guerel Verfahren zum Herstellen von Brennern
DE2000813A1 (de) * 1969-01-09 1970-07-23 Saunier Duval Zuendflammenbrenner fuer schnellerhitzte Gasboiler und Gasbadeoefen
GB1331186A (en) * 1971-04-22 1973-09-26 Sagardui Pilot burner for gas appliances
GB2184532A (en) * 1985-12-17 1987-06-24 Bray & Co Ltd Geo Flame effect burner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0967435A1 (de) * 1998-06-26 1999-12-29 Truma Gerätetechnik GmbH & Co. Zündbrenner
US20130048764A1 (en) * 2011-08-31 2013-02-28 Beckett Gas, Inc. Inshot gas burner
US9062879B2 (en) * 2011-08-31 2015-06-23 Beckett Gas, Inc. Inshot gas burner

Also Published As

Publication number Publication date
CA2102548A1 (en) 1994-05-08
AU5048293A (en) 1994-05-19
GB9223384D0 (en) 1992-12-23

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