EP0945679B1 - Gasbrenner für Kochgeräte - Google Patents

Gasbrenner für Kochgeräte Download PDF

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Publication number
EP0945679B1
EP0945679B1 EP99400629A EP99400629A EP0945679B1 EP 0945679 B1 EP0945679 B1 EP 0945679B1 EP 99400629 A EP99400629 A EP 99400629A EP 99400629 A EP99400629 A EP 99400629A EP 0945679 B1 EP0945679 B1 EP 0945679B1
Authority
EP
European Patent Office
Prior art keywords
head
cap
gas
gas burner
burner according
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
EP99400629A
Other languages
English (en)
French (fr)
Other versions
EP0945679A1 (de
Inventor
Gilles Grandveau
Alain Meslif
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 EP0945679A1 publication Critical patent/EP0945679A1/de
Application granted granted Critical
Publication of EP0945679B1 publication Critical patent/EP0945679B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/26Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06Premix 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D2212/00Burner material specifications
    • F23D2212/20Burner material specifications metallic

Definitions

  • the invention relates to a gas burner for cooking.
  • a gas burner for cooking.
  • Such a burner provides outlet openings for an air / gas mixture, at which flames can form.
  • burners are designed to be able to operate regardless of the supply gas: city, natural gas or liquefied petroleum gas.
  • the flames that form on the gas / air mixture outlet ports remain stable, even if the characteristics of the air / gas mixture.
  • the main flames that form at these holes are stabilized by a small flame, generated at the base and possibly above the flames main.
  • This pilot flame is used to heat the air / gas mixture of the main flame and relight in permanently the main flame.
  • An example of such a burner has a cap having a peripheral rim, through which the cap rests on a support. Slots are provided in this rim for the outlet of the air / gas mixture.
  • slots are narrow and their walls have a profile trapezoidal. So at the part of each slot having a high thickness corresponds to a low exit speed of the mixture which allows retention of flames, while at the part of the slot presenting a thin corresponds to a mixing flow important.
  • the hat which comprises the orifices of outlet of the air / gas mixture and it must also be made of a material resistant to temperatures which is not the case for aluminum.
  • burner of this type is produced in two parts, a cast iron or enamelled steel hat which is placed on a head, made of injected aluminum.
  • the head has a base that supports a skirt peripheral. It is in this skirt that the air / gas mixture outlet ports.
  • holes are formed by more or less slots deep, arranged alternately.
  • the hat rests directly on the burner head skirt.
  • Small slits laminate the air / gas mixture and produce flames that are shorter than main flames from the deepest slits. These main flames are thus stabilized.
  • the main slots must be very spaced and the diameter of the burner head is therefore relatively large.
  • the object of the present invention is to overcome the disadvantages of known burners by proposing a burner gas suitable for different combustion gases, including manufacturing cost is reduced and that is compatible with mass production and can be used with reduced grid height and in a wide range of gas power.
  • the invention relates to a gas burner for cooking appliances, comprising a head and a cap intended to be placed on the head, the head comprising a base pierced with a hole for the supply of mixture air / gas and supporting a peripheral skirt in which slots are provided which are substantially perpendicular to the plan of the base, characterized in that it comprises a plurality of studs on the upper face of said skirt, each of them being substantially equidistant between two adjacent slots and located at least partly in the inner half of the upper side of said skirt, said studs thus providing a space between the hat and head in which part of the mixture air / gas is laminated.
  • the width of said studs is less than half the thickness between two adjacent slots.
  • the depth of the studs is less than half the depth of the slots or still of the thickness of the peripheral skirt.
  • each pad has one side located in the plane of the inner edge of the skirt.
  • the burner cap is slightly overflowing and has on the periphery of its inner face a lip forming a beak, oriented towards the head.
  • the hat also includes a boss which is substantially centered on its inner face.
  • the invention also relates to a gas burner for a Cooktop.
  • the orifice made in the base of the head of burner allows the supply of gas from a injector and the base has a suitable shape for make an air / gas mixer with the burner cap.
  • the hat has hollow in its inside face a dome whose concavity is turned towards the burner head.
  • this dome forms a portion of surface spherical whose center is located on the injector and whose radius corresponds to the distance between the dome and the injector.
  • the head and the hat have a shape substantially circular or even oval.
  • the burner head is advantageously produced by aluminum injection, while the cap is obtained by casting or forming cast iron or steel.
  • Figure 1 illustrates partially the two constituent elements of the gas according to the invention: the cap 1 and the head 2 which both have a generally circular shape.
  • the invention is not limited to this particular form and the hat and head can also have a Oval shape.
  • the cap 1 has on the periphery of its inner face 11, a flange 12 forming a beak whose function will be described later.
  • the hat also has a boss 13 on its face internal 11 and which is substantially centered.
  • the function of this boss and that of the rim 14 provided between the boss 13 and the flange 12 will also be described in the continuation of the description.
  • the burner head 2 has a base 20 which is hole 21 for supplying the mixture air / gas.
  • the base 20 is substantially flat.
  • the gas comes from an injector which is not illustrated on Figure 1.
  • the base 20 supports a peripheral skirt 22, the outer periphery is bent towards the center of the base.
  • slots 23 which are substantially perpendicular to the plane of the base 20. These slots extend over part of the height of the skirt 22 and are relatively narrow.
  • the pad 25 is preferably substantially centered or at equal distance between the two adjacent slots 23.
  • the stud 25 is placed towards the inner edge 26 of the skirt 22.
  • the stud 25 is located, at least partly in the inner half 27 of the face upper 24 of skirt 22, as delimited by dashed lines in Figure 2.
  • the pads 25 are completely located in this inner half 27, and in particular, comprise one side located in the plane of the inner edge 26 of the skirt 22, as illustrated in FIGS. 1 and 2.
  • the depth f of the studs is preferably less than half the depth e of the slots main 23, or even less than half of the thickness of the skirt 22. Under these conditions, the studs 25 can be completely located on half inner 27 of the upper face 24 of the skirt 22.
  • the width d of the studs 25 is, from preferably less than half the thickness c of the skirt 22 has between two adjacent slots 23.
  • FIG. 4 shows that the presence of the studs 25 makes it possible to provide a space between the burner head 2 and the burner cap 1.
  • Figure 4 shows that the rim 14 formed on the face internal of the cap 1 allows positioning, so relatively stable, the cap on the burner head.
  • An air / gas mixture arrives in the space formed between the burner head and cap, through orifice 21 in the base 20.
  • the corresponding flow is illustrated by arrow F.
  • This gas / air mixture flow then goes to the outlet orifices constituted by the slots 23 and the space provided between the studs 25.
  • the part of the air / gas mixture which passes between the studs 25 is laminated by the passage between the face upper part of the skirt and the inner side of the hat.
  • the burner according to the invention has so an uninterrupted slit under the hat at which develops the pilot flame which goes thus stabilize the main flames from above.
  • the cap 1 has on its inner face 11, a rim 12 forming beak and directed towards the head.
  • the hat protrudes slightly from the head, so that the ledge 12 is located at a distance from the flame outlet main and pilot.
  • This rim creates turbulence in the flame pilot. This defines a recirculation zone for the pilot flame with the top of the main flames, this which helps stabilize them.
  • this rim 12 allows the pilot flame arranged above the main flames to be as effective that a pilot flame arranged at the base of the flames main.
  • Figure 4 illustrates the shape of the main flames, when the air / gas mixture flow is relatively strong.
  • Figure 6 illustrates the shape of the main flames, when the air / gas mixture flow is reduced.
  • the main flame naturally comes to nest under the burner cap 1. Due to the continuity of the slot under the burner cap for pilot flame, this ensures the reignition of the part of the main flames that would come to go out, for example due to a draft.
  • the burner according to the invention allowed proper operation over a wide air / gas mixture flow value range.
  • the operation of the burner is possible in a relationship between minimum flow and flow nominal air / gas mixture which is of the order of 1/10.
  • the cap 1 of the burner also has a boss 13 on its face interior 11.
  • This boss decreases the speed of the part of the mixture air / gas which passes through the space provided between the studs and between the upper side of the skirt and the inner side of the hat, which is illustrated by the arrows F2 on the Figures 4 and 5.
  • This boss significantly improves stability flames, with gases tending to blowing.
  • This burner can therefore be more ventilated in primary air than burners that do not have such a slot for the pilot flame.
  • the burner according to the invention can operate with a height under the grid, i.e. with a height between the hob and the bottom of a container, which is limited.
  • This burner can for example operate with a height under grid between 25 and 30 mm, while the traditional burners require a height under grid between 35 and 45 mm.
  • the slots 23 of the burner head are relatively spaced from each other.
  • FIG. 7 illustrates a burner according to the invention, designed for a table cooking.
  • the space available for the gas injector and the air / gas mixer is relatively small, by compared to a conventional stove.
  • the burner has a cap 3 and a head 4.
  • the base 40 of the head 4 is not entirely flat. Her central part which has an orifice 41 for the gas supply is slightly raised by relative to the base of the slots 43 and then goes in declining towards the skirt 42.
  • Reference 5 designates the gas injector, this gas is brought to the burner through orifice 41.
  • This particular shape of the base 40 allows mix the air / gas in the space defined between the hat and base.
  • this type of mixer is very sensitive to the positioning accuracy of the injector relative to axis 6 of the burner. For example, if the angle ⁇ that forms the injector with axis 6 of the burner is of the order of 1 °, this will produce a visible asymmetry of the flames which is due to local variations in air / gas ratio in the mixture.
  • the cap 3 comprises a dome 35 which is hollowed out in the boss 33 provided on the inner face 31 of the cap 3.
  • This dome has a concavity turned towards the base 40 of the burner head.
  • this dome 35 defines a portion of spherical surface whose center is located at injector 5 and whose radius corresponds to the distance between the dome and the injector.
  • this dome 35 ensures a correct operation of the burner, even if angle a is about 3 ° and if the axis of the injector is spread about 2 mm from axis 6 of the burner (reference p).
  • This dome 35 therefore improves the flexibility of the mounting of the burner according to the invention.
  • a stud is systematically provided between two slots for the flames main.
  • a burner according to the invention can comprise a more limited number of studs, insofar as the planned studs effectively generate a pilot flame, separate from the main flame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Claims (11)

  1. Gasbrenner für Kochvorrichtungen, welche einen Kopf (2) und einen Deckel (1) vorgesehen, um auf dem Kopf angeordnet zu sein, umfasst, welche eine Fußplatte (20), die zur Versorgung an Luft-/ Gasgemisch mit einer Öffnung (21) durchbrochen ist, und eine Ringverkleidung (22) umfasst, in welcher im wesentlichen zur Ebene der Befestigungsplatte senkrechte Spalte (23) ausgespart sind, dadurch gekennzeichnet, dass sie eine Vielzahl von Steckstellen (25) auf der Oberseite (24) der Verkleidung umfasst, deren Breite (d) kleiner als die Dicke (c) zwischen zwei aneinander liegenden Spalten (23) ist, wobei jede von ihnen im wesentlichen bei gleichem Abstand zwischen zwei aneinander liegenden Spalten steht und wenigstens teilweise in der inneren Hälfte (27) der Oberseite der Verkleidung angeordnet ist, wobei die Steckstellen so einen Raum zwischen dem Deckel und dem Kopf aussparen, in welchen ein Teil des Luft-/ Gasgemisches ausgebreitet ist.
  2. Brenner nach Anspruch 1, dadurch gekennzeichnet, dass die Breite (d) der Steckstellen (25) kleiner als die Hälfte der Dicke (c) zwischen zwei aneinander liegenden Spalten (23) ist.
  3. Brenner nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Tiefe (F) der Steckstellen (25) kleiner als die Hälfte der Tiefe (E) der Spalte (23) ist.
  4. Brenner nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jede Steckstelle (25) eine Seite umfasst, die in der Innenrandfläche (26) der Verkleidung (22) angeordnet ist.
  5. Gasbrenner nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Deckel (1) leicht ausufernd ist und an dem Rand seiner Innenfläche (11) eine Stoßkante (12) umfasst, welche einen Schnabel formt und zum Kopf (2) gerichtet ist.
  6. Gasbrenner nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Deckel (1) einen Nabenwulst (13) umfasst, der im wesentlichen auf dessen Innenseite (11) zentriert ist.
  7. Gasbrenner nach einem der Ansprüche 1 bis 6 für eine Herdplatte, umfassend einen Deckel (3) und einen Kopf (4), wobei die Fußplatte (40) des Kopfs eine Öffnung (41) zur Versorgung an Gas, das von einem Injektor (5) kommt und eine geeignete Form aufweist, um eine Luft-/Gasmischung mit dem Deckel des Brenners zu bilden, dadurch gekennzeichnet, dass der Deckel (3) hohl in seiner Innenseite (11) eine Kuppel (33) umfasst, deren Concavität vor allem zur Kopf (4) hingedreht ist.
  8. Gasbrenner nach Anspruch 7, dadurch gekennzeichnet, dass die Kuppel (33) einen Kugelflächenteil bildet, dessen Zentrum auf dem Injektor (5) angeordnet ist und dessen Radius dem Abstand zwischen der Kuppel und dem Injektor entspricht.
  9. Gasbrenner nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Kopf (2,4) und der Deckel (1,3) eine im wesentlichen kreisförmige oder ovale Form haben.
  10. Brenner nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Kopf (2,4) durch Spritzen von Aluminium verdichtet wird.
  11. Brenner nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Deckel (1,3) durch Gießen oder Schmelzformen oder aus Stahl erhalten ist.
EP99400629A 1998-03-26 1999-03-15 Gasbrenner für Kochgeräte Expired - Lifetime EP0945679B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9803771 1998-03-26
FR9803771A FR2776753B1 (fr) 1998-03-26 1998-03-26 Bruleur a gaz pour appareils de cuisson

Publications (2)

Publication Number Publication Date
EP0945679A1 EP0945679A1 (de) 1999-09-29
EP0945679B1 true EP0945679B1 (de) 2003-06-04

Family

ID=9524538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99400629A Expired - Lifetime EP0945679B1 (de) 1998-03-26 1999-03-15 Gasbrenner für Kochgeräte

Country Status (8)

Country Link
US (1) US6082994A (de)
EP (1) EP0945679B1 (de)
AT (1) ATE242456T1 (de)
DE (1) DE69908468T2 (de)
ES (1) ES2201641T3 (de)
FR (1) FR2776753B1 (de)
NO (1) NO310161B1 (de)
TR (1) TR199900646A2 (de)

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CA2302457C (en) * 1999-04-15 2008-11-18 Thermador Corporation Burner with piloting ports
NZ502170A (en) * 2000-01-06 2002-10-25 Fisher & Paykel Appliances Ltd Gas burner with transparent ceramic glass cap or top
US6267586B1 (en) * 2000-05-05 2001-07-31 Beckett Gas, Inc. Low NOx burner
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FR2814795B1 (fr) 2000-10-03 2005-10-21 Sourdillon Sa Bruleur a gaz et appareil de cuisson utilisant un tel bruleur
DE10124013A1 (de) * 2001-05-17 2002-11-21 Isphording Germany Gmbh Brennerkopf eines Gasbrenners
US7322820B2 (en) * 2001-11-08 2008-01-29 Bsh Home Appliances Corporation Controlled flame gas burner
ITAN20020026A1 (it) * 2002-06-11 2003-12-11 Somi Press Soc Metalli Iniettati Spa Corona per bruciatori a gas per fornelli da cucina
US7017572B2 (en) 2003-05-27 2006-03-28 General Electric Company Method and apparatus for gas ranges
US7303388B2 (en) * 2004-07-01 2007-12-04 Air Products And Chemicals, Inc. Staged combustion system with ignition-assisted fuel lances
US7291009B2 (en) * 2004-09-08 2007-11-06 General Electric Company Dual stacked gas burner and a venturi for improving burner operation
KR20060134729A (ko) * 2005-06-23 2006-12-28 김화용 휴대용 가스렌지의 소화 방지용 고화력 버너
US7628609B2 (en) * 2006-12-29 2009-12-08 Electrolux Home Products, Inc. Hub and spoke burner with flame stability
US8171927B2 (en) * 2007-09-27 2012-05-08 Electrolux Home Products, Inc. Burner cap flame stabilization chamber
US7841332B2 (en) * 2008-02-14 2010-11-30 Electrolux Home Products, Inc. Burner with flame stability
KR101617442B1 (ko) 2008-12-15 2016-05-02 엘지전자 주식회사 탑버너 및 이를 포함하는 조리기기
CN201582887U (zh) * 2009-11-23 2010-09-15 惠而浦产品研发(深圳)有限公司 火盖及灶头
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
BR102012027244A2 (pt) * 2012-10-24 2014-07-15 Whirlpool Sa Disposição construtiva introduzida em queimador a gás
US9702551B2 (en) 2015-06-11 2017-07-11 Haier Us Appliance Solutions, Inc. Gas burner
US9664394B2 (en) 2015-06-11 2017-05-30 Haier Us Appliance Solutions, Inc. Multi-ring gas burner
CN106594720A (zh) * 2016-11-22 2017-04-26 开乐新能源科技有限公司 一种燃气炉头
JP7281067B2 (ja) * 2018-12-07 2023-05-25 山岡金属工業株式会社 多炎孔バーナ
BR102021018934A2 (pt) * 2021-09-22 2023-04-04 Electrolux Appliances Aktiebolag Queimador tubular de gás

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Also Published As

Publication number Publication date
DE69908468T2 (de) 2004-04-15
NO310161B1 (no) 2001-05-28
EP0945679A1 (de) 1999-09-29
TR199900646A3 (tr) 1999-10-21
NO991453D0 (no) 1999-03-25
FR2776753B1 (fr) 2000-06-30
FR2776753A1 (fr) 1999-10-01
ATE242456T1 (de) 2003-06-15
DE69908468D1 (de) 2003-07-10
NO991453L (no) 1999-09-27
TR199900646A2 (xx) 1999-10-21
US6082994A (en) 2000-07-04
ES2201641T3 (es) 2004-03-16

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