EP1172607B1 - Gasbrenner mit erhöhter Leistung - Google Patents

Gasbrenner mit erhöhter Leistung Download PDF

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Publication number
EP1172607B1
EP1172607B1 EP20010401572 EP01401572A EP1172607B1 EP 1172607 B1 EP1172607 B1 EP 1172607B1 EP 20010401572 EP20010401572 EP 20010401572 EP 01401572 A EP01401572 A EP 01401572A EP 1172607 B1 EP1172607 B1 EP 1172607B1
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EP
European Patent Office
Prior art keywords
burner
flames
head
combustion
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.)
Expired - Lifetime
Application number
EP20010401572
Other languages
English (en)
French (fr)
Other versions
EP1172607A1 (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 air induction and partial premixing of gas and air, such as in particular the burners for industrial or private ranges.
  • burners of the type comprising a body equipped with at least one flame support means provided with orifices for the passage of burning gases through them in order to forming main flames, and a feed system in a mixture of fuel gas and combustion air connected to the flame support means.
  • These burners quite typical as those with circular blue flames (or crown) with atmospheric air induction and partial premix, various disadvantages in particular related to their surface yield often insufficient (in particular for professional use) and / or pollution (emission of polluting gases).
  • the object of the invention is to obtain a power density at level of the main flames of the burner, much higher than that provided by a burner, as described in WO-A-98 30838, combining two means different combustion through which escapes the same mixture gaseous.
  • the auxiliary means of combustion comprise at least one injector connected to a source of gas substantially pure fuel and emitting a turbulent jet of said gas substantially pure giving birth to secondary flames.
  • the turbulent jet thus created in the immediate environment of main flames allows improved combustion due to its speed which generates a better mixing of the surrounding air.
  • the burning of the secondary flames and the burning of the mixture of fuel gas and combustion air interact, which increases the power density provided by a fuel air mixture burner and oxidizing gas for a given level of pollution.
  • the air mixing increases the heat transfer coefficient to the container at heat (saucepan for example).
  • the auxiliary combustion means will not start only when the power of the main burner is reached, so that "booster" this burner at once, for example to increase very quickly power under a pot of water to heat, all without increase the size of the burner.
  • the support means flames are constituted by a combustion head fed by a power-adjustable gas mixture source, the main flames being then adaptable and then developing around the circumference of this head, level of the flaming gas through-holes, and that the means auxiliary combustion are then all or nothing type (open closed).
  • the head of combustion will preferably be circular in section and the injectors will be then placed on a concentric circle with the combustion head and inclined a non-zero angle with the vertical, the radius of the circle and the angle of inclination being then chosen so that the injectors point in the direction of the end of the main flames coming out of the combustion head.
  • injectors may be four regularly distributed on a circle and they will point to the exit holes of the head circular burner, more precisely towards the end of the flames outgoing from this head so that the pure gas coming out of injectors is propelled towards the end of said main flames.
  • the combustion head can be annular and have adapted gas mixture passage orifices for the main flames to develop towards the center of said head, and the injectors will then preferably be located inside this ring and centrifugally oriented towards the main flames at from their end.
  • This structure further reduces the size of the burner because injectors are arranged inside the head.
  • the head of combustion can directly integrate injectors auxiliary means of combustion.
  • the invention also relates to a cooking appliance (such as a cooker) or heater (water heater) equipped with a burner as described, with its auxiliary means of combustion.
  • a cooking appliance such as a cooker
  • heater water heater
  • the invention relates to a gas mixture burner 10 comprising a body 12, typically made of metal (eg cast aluminum) on which is mounted a means 14 flame support in the form of a combustion head substantially horizontal, for example brass, provided with a cap 16.
  • This head of combustion 15 is for example here circular section of center A, as it can be seen more precisely in 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 flames F (or primary) which develop in crown shape around the head.
  • the burner 10 also comprises a supply system 20 connected in particular to the combustion head. It is described in more detail later in Figure 4.
  • the burner 10 is also provided with auxiliary means (or secondary) of combustion occurring 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 of center A and radius R, are supplied with substantially pure fuel gas (i.e. substantially comprising only combustible gas, or at least no gas oxidant) at a preferably constant pressure. They are independent of the combustion head 15 and operate in all or nothing, while the head of combustion is, on the contrary, adjustable in power so as to give
  • injectors 32 co-operate closely with the combustion head 15 so as to be able to provide a localized excess of power when desired.
  • injectors 32 are provided to send a stream of pure gas directed towards the gases in combustion forming the flames coming out of the combustion head, and particular towards the H point, at the end of the main flames (see Figure 5).
  • the injectors 32 can be inclined by making a non-zero angle ⁇ (positive or negative) with the vertical, for example if move the injectors away from the center of the head by increasing the radius R of the circle on which they are. It is best to always choose a circle diameter and an inclination angle ⁇ such that the jet of gas issuing from injectors 32 point towards the flaming gases forming the flames to mix with these, and preferably towards the end point of said main flames so that secondary flames F 'can be created correctly following or between main flames, by interlocking with them (the main flames then become "pilot" flames of secondary flames).
  • ⁇ positive or negative
  • injectors 32 are directly mounted on the combustion head 15 and not on the body 12.
  • the head 15 is preferably annular and the main flames are directed to the center A of the head, while the injectors are placed in the middle of this ring and preferably directed, as for the solution preceding, towards the endpoint 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 performance issues.
  • FIG 4 there is shown a schematic diagram of the system burner feed.
  • This system 20 includes a first line 21 gas supply (natural gas for example) that supplies power to the mixing device (atmospheric air + natural gas) of the head of combustion and which is controlled by a safety valve 22 connected to a thermocouple 23.
  • a second line 24 derives from the first line 22 of way to feed the injectors 32 in pure gas.
  • the admission of gas to injectors 32 is controlled by the user with the aid of a solenoid valve 26 and a switch off stop 25. To ensure maximum safety, the admission of gas to the injectors is allowed only when the head of combustion is at full flow thanks to a pressure switch 27 connected on the line 21.
  • the on-off button can only be operated when the pressure switch detected that the combustion head was at maximum power.
  • this improved burner which can by example be mounted on a traditional gas stove (for housing) or professional (industrial kitchen), is very simple.
  • the user wants to quickly increase the heating power of the burner under a dish or pan, it first puts the medium flame holder at maximum power by turning a knob provided for this effect. Then it activates the solenoid valve 26 and the on-off switch 25 (type "all or nothing" so).
  • This has the effect of injecting pure gas into direction of the crown of main flames. It creates a jet turbulent gas that mixes with flaming gas main causes, causing the creation of secondary flames F 'that come add to the main flames.
  • the pressure switch detecting a pressure drop below the maximum pressure, it automatically shuts off the gas inlet to the injectors, and the burner works again in normal mode, the effect "punctual supplement of "Of course, the user can, if he wishes, to control the shutdown of the injectors itself by means of the on-off button.
  • This burner is therefore extremely easy to use as well as design. It is adaptable to many types of cooking appliances or heating (not shown), whether it be stoves, heaters gas, water heaters or other appliances equipped with premix burners partial or total which may require additional power easily get.
  • the invention is not limited to the modes of achievements presented as an example.
  • the head, and therefore the burner complete may have a shape other than circular or annular.
  • the number and position of the injectors can also vary, particularly in depending on the shape of the head.
  • Other gases may also be used in the place of natural gas such as oil gases or manufactured gases, for example.

Landscapes

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

Claims (7)

  1. Brenner (10), umfassend:
    ein Gehäuse (12), versehen mit mindestens einem Flammenhalter-Mittel (14), das mit Öffnungen (17) für das Strömen einer Mischung entzündeter Gase durch sie hindurch versehen ist, um Hauptflammen (F) zu bilden, und
    ein System zur Versorgung (20) mit der Mischung von Brenngas und Verbrennungsluft, das mit dem Flammenhalter-Mittel (14) verbunden ist,
    Verbrennungshilfsmittel (30) zum Lenken eines Gasstroms (G) im Wesentlichen in Richtung der Hauptflammen, mit deren entzündeten Gasen sich dieser mischt, um Sekundärflammen (F') zu bilden, die sich zwischen den Hauptflammen (F) oder hinter diesen entwickeln, sodass er dem Flammenhalter-Mittel (14) eine erhöhte Leistung zuführt, mit dem die Verbrennungshilfsmittel (30) zusammenwirken, dadurch gekennzeichnet, dass die Verbrennungshilfsmittel (30) mindestens eine Düse (32) umfassen, die mit einer Quelle von im Wesentlichen reinen Brenngas verbunden ist und die einen turbulenten, im Wesentlichen reinen Strahl des Gases ausstößt, der die Sekundärflammen (F') erzeugt.
  2. Brenner (10) nach Anspruch 1, dadurch gekennzeichnet, dass das System zur Versorgung (20) umfasst:
    Mittel (25, 26, 27) zum Auslösen des Beginns der Versorgung der Verbrennungshilfsmittel (30) mit Brenngas nur dann, wenn die Flammenhalter-Mittel (14) auf Höchstleistung eingestellt sind, und
    Mittel (25, 26, 27) zum Auslösen des Endes der Versorgung der Verbrennungshilfsmittel (30) mit Brenngas, wenn die Leistung der Flammenhalter-Mittel (14) erheblich unter die Höchstleistung fällt.
  3. Brenner (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass:
    die Flammenhalter-Mittel (14) einen Verbrennungskopf (15) umfassen, der durch eine Quelle einer Mischung aus Brenngas und Verbrennungsluft versorgt wird, dessen Leistung regelbar ist, wodurch die Hauptflammen (F) anpassungsfähig sind und sich auf dem Umfang dieses Kopfes entwickeln, im Bereich der Durchgangsöffnungen (17) für die Mischung entzündeter Gase, und
    die Verbrennungs-Hilfsmittel (30) eine Ein-Aus-Regelung aufweisen.
  4. Brenner (10) nach Anspruch 3, dadurch gekennzeichnet, dass:
    der Verbrennungskopf (15) einen kreisförmigen Querschnitt aufweist,
    die Düsen (32) konzentrisch mit dem Verbrennungskopf angeordnet sind, entlang eines Kreises, der einen Radius (r) aufweist, und sie geneigt sind, wobei sie einen gewissen Winkel (α) mit der Senkrechten bilden, und
    der Radius (r) des Kreises und der Neigungswinkel (α) so gewählt sind, dass die Düsen (32) in Richtung des Endpunkts (H) der Hauptflammen (F) zeigen.
  5. Brenner (10) nach Anspruch 4, dadurch gekennzeichnet, dass der Verbrennungskopf (15) von ringförmigem Typ ist und Durchgangsöffnungen (17) für die Gasmischung aufweist, die dafür angepasst sind, dass die Hauptflammen (F) sich zur Mitte (A) des Kopfes (15) hin entwickeln, und die Düsen (32) sich im Inneren des Rings befinden und zentrifugal ausgerichtet sind, in Richtung des Endpunkts (H) der Hauptflammen (F).
  6. Brenner (10) nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass der Verbrennungskopf (15) die Düsen (32) der Verbrennungs-Hilfsmittel (30) unmittelbar einbindet.
  7. Vorrichtung zum Brennen oder Erhitzen, versehen mit einem Brenner (10), nach einem der vorhergehenden Ansprüche.
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
FR0008976 2000-07-10
FR0008976A FR2811410B1 (fr) 2000-07-10 2000-07-10 Bruleur a melange de gaz et d'air a puissance accrue

Publications (2)

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

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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

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1917471B1 (de) * 2005-08-16 2019-03-20 BSH Hausgeräte GmbH Vorrichtung zur zeitbegrenzten leistungserhöhung
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

Family Cites Families (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
ATE149662T1 (de) * 1990-11-12 1997-03-15 De Longhi Spa Brenner, insbesondere für gaskochervorrichtung, mit einer grossen betriebsflexibilität
DE4434742C2 (de) * 1994-09-28 2001-01-11 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

Also Published As

Publication number Publication date
FR2811410B1 (fr) 2002-10-04
EP1172607A1 (de) 2002-01-16
ES2249397T3 (es) 2006-04-01
DE60115773D1 (de) 2006-01-19
FR2811410A1 (fr) 2002-01-11
DE60115773T2 (de) 2006-07-06

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