EP1172607A1 - Gasbrenner mit erhöhter Leistung - Google Patents

Gasbrenner mit erhöhter Leistung Download PDF

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Publication number
EP1172607A1
EP1172607A1 EP01401572A EP01401572A EP1172607A1 EP 1172607 A1 EP1172607 A1 EP 1172607A1 EP 01401572 A EP01401572 A EP 01401572A EP 01401572 A EP01401572 A EP 01401572A EP 1172607 A1 EP1172607 A1 EP 1172607A1
Authority
EP
European Patent Office
Prior art keywords
combustion
burner
flames
head
injectors
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.)
Granted
Application number
EP01401572A
Other languages
English (en)
French (fr)
Other versions
EP1172607B1 (de
Inventor
Ludovic Thiebaux
Jean-Claude Molla
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.)
Engie SA
Original Assignee
Gaz de France SA
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 Gaz de France SA filed Critical Gaz de France SA
Publication of EP1172607A1 publication Critical patent/EP1172607A1/de
Application granted granted Critical
Publication of EP1172607B1 publication Critical patent/EP1172607B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges
    • 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
    • F23D2900/14062—Special features of gas burners for cooking ranges having multiple flame rings

Definitions

  • the field of the invention is that of gas mixture burners fuel and combustion air, in particular with air induction and partial premixing of gas and air, such as burners for industrial or private ranges.
  • burners of the type comprising a body equipped with at least one flame support means provided with openings for the passage through them of ignited gases in order to form main flames, and a mixture supply system of combustible gas and combustion air connected to the flame support means.
  • These very typical burners like those with circular blue flames (or crown) with atmospheric air induction and partial premix, have various drawbacks notably linked to their surface yield often insufficient (in particular in professional use) and / or pollution (discharge of polluting gases).
  • the evolution of market demand leads to a share in wanting to increase the maximum power of these burners while retaining their size, i.e.
  • WO-A-98 30838 describes an improvement to this type of burner, the burner further comprising means combustion auxiliaries to send a gas flow substantially in direction of said main flames with the ignited gases of which it mixes to create secondary flames that develop between main flames, or as a result thereof, so as to bring about an increase of power by means of flame support with which the means combustion auxiliaries cooperate.
  • the invention aims to obtain a power density at level of main burner flames, much higher than that provided by a burner, as described in WO-A-98 30838, combining two means of different combustion through which escapes the same mixture gaseous.
  • the auxiliary means of combustion include at least one fuel gas injector substantially pure giving rise to secondary jet-shaped flames turbulent.
  • the turbulent jet thus created in the immediate environment of main flames allows improved combustion due to its speed which results in better mixing of the surrounding air.
  • burning the secondary flames and burning the mixture of combustible gas and combustion air interact, which increases the power density provided by a combustible air mixture burner and oxidizing gas for a given level of pollution.
  • the air circulation increases the heat transfer coefficient to the container heat (pan for example).
  • the auxiliary combustion means will not start only works when the power of the main burner is reached, so that "boost" this burner all at once, for example to increase very quickly power under a pan of water to heat, all without increase the size of the burner.
  • the support means of flames are constituted by a combustion head supplied by a power mixture source adjustable in power, the main flames being then modular and then developing around the periphery of this head, at level of the openings for the passage of ignited gases, and that the means combustion auxiliaries are then all or nothing type adjustment (open closed).
  • the head combustion will preferably be circular and the injectors will be then placed on a concentric circle with the combustion head and inclined at a non-zero angle with the vertical, the radius of the circle and the angle of inclination then being chosen so that the injectors point in the direction of the end of the main flames coming out of the combustion head.
  • the injectors may in particular be four in number regularly distributed in a circle and they will point to the exit ports of the head circular of the burner, more precisely towards the end of the flames main coming out of this head so that the pure gas coming out of injectors is propelled towards the end of said main flames.
  • the combustion head may be annular and have suitable gas mixture passage openings so that the main flames develop towards the center of said head, and the injectors will then preferably be located inside this ring and oriented centrifugally, towards the main flames, at the level from their end.
  • This structure further reduces the size of the burner because the injectors are arranged inside the head.
  • the head of combustion can directly integrate the injectors of the auxiliary means combustion.
  • the invention also relates to a cooking appliance (such as a stove) or heating (water heater) equipped with a burner as described, with its auxiliary combustion means.
  • a cooking appliance such as a stove
  • heating water heater
  • the invention relates to a gas mixture burner 10 comprising a body 12, typically made of metal (for example in cast aluminum) on which a means 14 is mounted flame support in the form of a substantially 15 combustion head horizontal, for example in brass, provided with a cap 16.
  • This head combustion 15 is for example here of circular section with center A, as we can see it more precisely on figure 2. It is also pierced several lateral orifices 17 (see FIG. 3) adapted to allow the passage of a premix of ignited gases (natural gas and air) for the formation of main F (or primary) flames which develop in crown shape around the head.
  • the burner 10 also includes a supply system 20 connected in particular to the combustion head. It is described in more detail later using Figure 4.
  • the burner 10 is also provided with auxiliary (or secondary) combustion means 30 presented under the form of one or more injectors 32 projecting from the body.
  • injectors 32 for example four in number arranged concentrically around the combustion head in a circle with center A and radius R, are supplied with substantially pure combustible gas (i.e. does not substantially comprising only combustible gas, or at least no gas oxidizer) at a preferably constant pressure. They are independent of the combustion head 15 and operate all or nothing, while the combustion head combustion is on the contrary adjustable in power so as to give birth of modular flames F.
  • These injectors 32 cooperate closely with the combustion head 15 so that a localized additional power when desired.
  • the injectors 32 are provided to send a flow of pure gas directed towards the gases in combustion forming the flames emerging from the combustion head, and in particular towards point H, at the end of the main flames (see figure 5).
  • the injectors 32 can be tilted by making a non-zero angle ⁇ (positive or negative) with the vertical, for example if we move the injectors a little further from the center of the head by increasing the radius R of the circle they are on. It is best to always choose a circle diameter and an angle ⁇ of inclination such as the gas jet leaving the injectors 32 point towards the combustion gases forming the flames main so that it mixes with these, and preferably towards the end point of said main flames so that secondary flames F 'can be created correctly following or between the main flames, by interignition with them (main flames then become "pilot" flames of secondary flames).
  • ⁇ positive or negative
  • the injectors 32 are directly mounted on the combustion head 15 and no longer on the body 12.
  • the head 15 is preferably annular and the main flames are directed towards the center A of the head, while the injectors are placed in the middle of this ring and directed preferably, as for the solution preceding, in direction, from the end point of the main flames.
  • the injectors 32 may also be inclined at an angle ⁇ with the vertical, and a minimum distance from the peripheral orifices of the head must still be respected for questions of performance.
  • FIG 4 there is shown a descriptive diagram of the system burner supply.
  • This system 20 includes a first line 21 gas supply (natural gas for example) which supplies the mixing device (atmospheric air + natural gas) of the head combustion 15 and which is controlled by a safety valve 22 linked to a thermocouple 23.
  • a second line 24 derives from the first line 22 of so as to supply the injectors 32 with pure gas.
  • the gas inlet to the injectors 32 is controlled by the user using a solenoid valve 26 and an on-off switch 25.
  • the admission of gas to the injectors is only authorized when the head of combustion is at full flow thanks to a pressure switch 27 connected to the line main 21.
  • the on / off button can therefore only be pressed when the pressure switch has detected that the combustion head is at maximum power.
  • this improved burner which can example be mounted on a traditional gas stove (for housing) or professional (industrial kitchen), is very simple.
  • the user wish to quickly increase the heating power of the burner under a dish or saucepan, it first puts the medium flame support in the maximum power by turning an adjustment knob provided for this effect. Then it activates the solenoid valve 26 and the on-off switch 25 (of type "all or nothing” therefore). This has the effect of injecting pure gas into direction of the main flame crown. It then creates a jet turbulent gas which mixes with the burning gas flames main, causing the creation of secondary flames F 'which come add to main flames.
  • the interignition which is created between the main flames and secondary flames helps stabilize the assembly and ensure high efficiency and emission combustion reduced pollutant (CO, Nox).
  • CO, Nox emission combustion reduced pollutant
  • the heat density present under the container is therefore markedly increased compared to the burners of the prior art.
  • the pressure switch detecting a pressure drop below the maximum pressure, it automatically cuts off the gas inlet to the injectors, and the burner works again in normal mode, the effect "occasional increase of power "disappearing.
  • the user can, if he wishes, control the injectors themselves using the start / stop button.
  • This burner is therefore extremely simple to use as well as design. It is adaptable to many types of cooking appliances or heating (not shown), whether stoves, space heaters gas, water heaters or other appliances with premix burners partial or total which may require an increase in power easy to get.
  • the invention is in no way limited to the modes of achievements presented as an example. So the head, and therefore the burner at complete, may have a shape other than circular or annular.
  • the number and position of the injectors can also vary, in particular depending on the shape of the head.
  • Other gases can also be used for the place of natural gas such as petroleum gases or manufactured gases, for example.
EP20010401572 2000-07-10 2001-06-15 Gasbrenner mit erhöhter Leistung Expired - Lifetime EP1172607B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0008976A FR2811410B1 (fr) 2000-07-10 2000-07-10 Bruleur a melange de gaz et d'air a puissance accrue
FR0008976 2000-07-10

Publications (2)

Publication Number Publication Date
EP1172607A1 true EP1172607A1 (de) 2002-01-16
EP1172607B1 EP1172607B1 (de) 2005-12-14

Family

ID=8852302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010401572 Expired - Lifetime EP1172607B1 (de) 2000-07-10 2001-06-15 Gasbrenner mit erhöhter Leistung

Country Status (4)

Country Link
EP (1) EP1172607B1 (de)
DE (1) DE60115773T2 (de)
ES (1) ES2249397T3 (de)
FR (1) FR2811410B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007020189A1 (de) * 2005-08-16 2007-02-22 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur zeitbegrenzten leistungserhöhung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008019117A1 (de) * 2008-04-16 2009-10-22 Man Turbo Ag Verfahren zum Betreiben eines Vormischbrenners und ein Vormischbrenner zur Durchführung des Verfahrens
DE102010023090A1 (de) * 2010-05-31 2011-12-01 E.G.O. Elektro-Gerätebau GmbH Verfahren zur Steuerung eines Gasbrenners und Gas-Kochfeld mit mehreren Gasbrennern

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE524547C (de) * 1929-11-05 1931-05-08 Vosswerke Akt Ges Doppelsparbrenner
GB628196A (en) * 1947-06-26 1949-08-24 Brockhouse J & Co Ltd Improvements in or relating to gas burners
EP0485645A1 (de) * 1990-11-12 1992-05-20 Miralfin S.R.L. Brenner, insbesondere für Gaskochervorrichtung, mit einer grossen Betriebsflexibilität
DE4434742A1 (de) * 1994-09-28 1996-04-04 Imp Werke Gmbh & Co Verfahren und Vorrichtung zum Regeln der Gaszufuhr bei einem Zweikreisgasbrenner
WO1998030838A1 (en) * 1997-01-09 1998-07-16 Robertshaw Controls Company Variable input gas top burner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE524547C (de) * 1929-11-05 1931-05-08 Vosswerke Akt Ges Doppelsparbrenner
GB628196A (en) * 1947-06-26 1949-08-24 Brockhouse J & Co Ltd Improvements in or relating to gas burners
EP0485645A1 (de) * 1990-11-12 1992-05-20 Miralfin S.R.L. Brenner, insbesondere für Gaskochervorrichtung, mit einer grossen Betriebsflexibilität
DE4434742A1 (de) * 1994-09-28 1996-04-04 Imp Werke Gmbh & Co Verfahren und Vorrichtung zum Regeln der Gaszufuhr bei einem Zweikreisgasbrenner
WO1998030838A1 (en) * 1997-01-09 1998-07-16 Robertshaw Controls Company Variable input gas top burner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007020189A1 (de) * 2005-08-16 2007-02-22 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur zeitbegrenzten leistungserhöhung
CN101243288B (zh) * 2005-08-16 2011-04-13 Bsh博施及西门子家用器具有限公司 在有限时间内提升功率的装置
US8001957B2 (en) 2005-08-16 2011-08-23 Bsh Bosch Und Siemens Hausgeraete Gmbh Device for increasing power for a limited time

Also Published As

Publication number Publication date
ES2249397T3 (es) 2006-04-01
EP1172607B1 (de) 2005-12-14
FR2811410B1 (fr) 2002-10-04
FR2811410A1 (fr) 2002-01-11
DE60115773T2 (de) 2006-07-06
DE60115773D1 (de) 2006-01-19

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