EP1025392B1 - Bruleur a gaz pour zone de cuisson - Google Patents

Bruleur a gaz pour zone de cuisson Download PDF

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Publication number
EP1025392B1
EP1025392B1 EP97936624A EP97936624A EP1025392B1 EP 1025392 B1 EP1025392 B1 EP 1025392B1 EP 97936624 A EP97936624 A EP 97936624A EP 97936624 A EP97936624 A EP 97936624A EP 1025392 B1 EP1025392 B1 EP 1025392B1
Authority
EP
European Patent Office
Prior art keywords
burner
crown
gas
flames
directed
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
EP97936624A
Other languages
German (de)
English (en)
Other versions
EP1025392A1 (fr
Inventor
Christian Eskildsen
Piero Armanni
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.)
Electrolux AB
Original Assignee
Electrolux AB
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 Electrolux AB filed Critical Electrolux AB
Publication of EP1025392A1 publication Critical patent/EP1025392A1/fr
Application granted granted Critical
Publication of EP1025392B1 publication Critical patent/EP1025392B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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 invention relates to a gas hotplate burner of the kind comprising a gas nozzle fitted into the bottom part of a burner body assembly, a supply passage for primary air, preferably taking the form of a circular slit, a mixing venturi, a crown structure defining a chamber, and a cap structure providing a lid for the same.
  • Burners based on the principle of a cap covering a crown being a circular array of openings for the gas mixture burning on the outside of the crown are known as is the use of a short venturi which has the advantage that the mixing takes place in a short vertical distance as opposed to the traditional long venturi. This enables a low profile of a cooker arrangement which is particularly suitable for fitting into existing cupboards without wasted space.
  • a larger amount of gas per time unit i.e. a larger diameter nozzle or injector for the same pressure
  • This calls for more primary air in order to obtain the correct gas/air mixture.
  • This is traditionally obtained by means of a larger supply passage for primary air.
  • EP 0 534 301 A discloses a gas hotplate burner comprising a gas nozzle fitted into the bottom part of a burner body assembly, a supply passage for primary air, in the form of a circular slit, a mixing venturi, a crown structure defining a chamber, and a cap structure providing a lid for the same.
  • the crown and cap structures define a ring-shaped chamber having flame openings on at least part of the inside perimeter as well as on the outside.
  • DE 44 27 953 A discloses a gas hotplate burner of a kind similar to that disclosed in EP 0 534 301 A.
  • the object of the invention to further improve the use of the area defined by the burner crown and cap structures.
  • the object is achieved by a gas hotplate burner as defined above in which the crown and cap structures further define a central circular chamber, flame openings being available on the outside perimeter of said central circular chamber.
  • an outwards directed ring of flames will be present, as known from traditional burners of a particular diameter, and in addition there will be a smaller ring of flames directed towards the centre of the burner.
  • These two rings of flames are completed by a further ring of flames from the outer perimeter of the central circular chamber.
  • the total flame area may be increased by at least 30 % within the same overall diameter.
  • the use of the area will be further increased. This is, however, critically dependent on efficient supply of secondary air, i.e.
  • the air needed for burning the gas/air mixture exiting from the inside part of the crown may be obtained by special conduits for outside air leading to the centre area of the cap. In case these are fed from the space below the hotplate, the flow of this secondary air becomes very sensitive to the opening of cupboard doors, etc.
  • a further advantageous embodiment is particular in that the crown and cap define a ring-shaped chamber as well as a central circular chamber, flame openings being available on the outside perimeter, on part of the inside perimeter, and on the outside of the central circular chamber.
  • the cap will be in two parts, one predominantly ring-shaped, the other a central disc. This construction allows increasing the performance of a burner of a given diameter by about 80%.
  • a further advantageous embodiment is particular in that an electric ignition device is fitted in a cut-out in the crown close to the outside perimeter, said cut-out having an outwards directed flame opening directed at an angle towards the ignition device which lights the outwards directed flames and an inwards directed flame opening which lights the inwards directed flames.
  • Fig. 1 it is seen how in this embodiment of the invention gas G is provided to an injector i which directs a jet of gas upwards and pulls in fresh air A from peripheral openings.
  • the gas is mixed in the venturi structure constituted by the vertical part Vv and a horizontal part Vh which an expanding cross section as the gas/air mixture travels outwards between the cap Ca and the conical surface of the crown Cr.
  • the gas/air mixture burns at the outside edge of the crown shown at F1 and F2 as well as at the inside at F3.
  • the flames F1, F2 (which in reality is a complete circle of flames surrounding the crown Cr) use the surrounding air as the source of secondary air, and the flames F3 (which in reality form parts of a circle of flame) use air "scooped" up from the indraught of primary air by means of a scoop S.
  • Fig. 2 shows the cap Ca having openings H in which the flames burn inwards towards the centre.
  • Fig. 3 shows the corresponding crown Cr with e.g. milled bottoms of flame openings Fo for the outwards directed flames and Foi for the inwards directed flames. The flame openings are completely defined when the crown is closed by the cap.
  • FIG. 4 is shown how the basic idea of the invention is extended in a different embodiment having an inner ring of outwards directed flames.
  • Gas G is provided to an injector i which directs a jet of gas upwards and pulls in fresh air A from peripheral openings.
  • the gas is mixed in the venturi structure constituted by the vertical part Vv and a horizontal part Vh which an expanding cross section as the gas/air mixture travels outwards between the cap Ca and the conical surface of the crown Cr.
  • the gas/air mixture burns at the outside edge of the crown shown at F1 and F2 as well as at the inside at F3.
  • gas/air mixture enters the space beneath the central cap Cac and burns with the flames F4 directed outwards from the central part of the burner.
  • the flames F1, F2 (which in reality is a complete circle of flames surrounding the crown Cr) use the surrounding air as the source of secondary air, and the flames F3 (which in reality form parts of a circle of flame) as well as the flames F4 directed into the same space use air "scooped" up from the indraught of primary air by means of a scoop S.
  • an electric ignition device is shown at E.
  • Fig. 5 is shown the central part of the crown structure, i.e. the openings causing the flames F3 and F4.
  • Fig. 6 is shown how the ignition device E functions in the burner according to the invention.
  • the gas When the gas is turned on it creates a combustible gas/air mixture in the space M, and it flows out through all the flame openings, both outwards and inwards.
  • I1 being directed towards the active part Ea of the ignition device which ignites the exiting gas, creating the ring of flames F1, F2.
  • the other particular flame opening I2 is directed towards the inside and the gas is ignited by the first flame at I1, whereafter it ignites the inner ring F3 of flames which in their turn ignite the central ring F4.

Landscapes

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

Abstract

Traditionnellement la puissance d'un brûleur à gaz comprenant une couronne et un chapeau est en rapport avec son diamètre, c'est-à-dire sa circonférence. La présente invention concerne un brûleur comprenant non seulement des flammes périphériques mais également des flammes près centre. Cette caractéristique est obtenue grâce à une structure de couronne et chapeau spécifique et une alimentation d'air secondaire pour les flammes dirigées vers l'intérieur, cette alimentation étant réalisée à l'aide d'une plaque (S) de prise d'air qui prélève une partie du flux (A) d'air primaire alimentant le brûleur. On obtient ainsi un brûleur présentant une puissance sensiblement accrue par rapport aux brûleurs traditionnels de diamètre égal.

Claims (3)

  1. Brûleur à gaz pour plaque chauffante du type comprenant une buse à gaz (i) placée dans la partie inférieure d'un ensemble formant corps de brûleur, un passage d'alimentation pour l'air primaire (A), prenant de préférence la forme d'une fente circulaire, un venturi mélangeur, une structure formant couronne (Cr) définissant une chambre, et une structure formant chapeau (Ca) fournissant un couvercle pour cette dernière, dans lequel les structures formant couronne et chapeau (Cr, Ca) définissent une chambre en forme d'anneau ayant des ouvertures de flammes sur au moins une partie du périmètre intérieur ainsi que sur le périmètre extérieur, caractérisé en ce que les structures formant couronne et chapeau (Cr, Ca) définissent en outre une chambre circulaire centrale, des ouvertures de flammes étant disponibles sur le périmètre extérieur de ladite chambre circulaire centrale.
  2. Brûleur à gaz pour plaque chauffante selon la revendication 1, caractérisé en ce que l'air primaire (A) entre par le passage circulaire semblable à une fente entourant chaque brûleur et avec une délimitation inférieure qui est la surface supérieure de la plaque chauffante et une délimitation supérieure constituée par une plaque circulaire, et en ce qu'une plaque formant pelle (S) est prévue pour extraire l'air secondaire du flux d'air principalement primaire entrant dans le passage semblable à une fente.
  3. Brûleur à gaz pour plaque chauffante selon la revendication 1, caractérisé en ce qu'un dispositif d'allumage électrique (E) est placé dans une découpe de la couronne à proximité du périmètre extérieur, ladite découpe ayant une ouverture de flammes dirigée vers l'extérieur (I1) dirigée en biais vers le dispositif d'allumage qui allume les flammes dirigées vers l'extérieur et une ouverture de flammes dirigée vers l'intérieur (I2) qui allume les flammes dirigées vers l'intérieur.
EP97936624A 1997-08-28 1997-08-28 Bruleur a gaz pour zone de cuisson Expired - Lifetime EP1025392B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DK1997/000353 WO1999011975A1 (fr) 1997-08-28 1997-08-28 Bruleur a gaz pour zone de cuisson

Publications (2)

Publication Number Publication Date
EP1025392A1 EP1025392A1 (fr) 2000-08-09
EP1025392B1 true EP1025392B1 (fr) 2003-09-10

Family

ID=8156209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97936624A Expired - Lifetime EP1025392B1 (fr) 1997-08-28 1997-08-28 Bruleur a gaz pour zone de cuisson

Country Status (5)

Country Link
EP (1) EP1025392B1 (fr)
AU (1) AU3939497A (fr)
DE (1) DE69724838D1 (fr)
ES (1) ES2206744T3 (fr)
WO (1) WO1999011975A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108266728A (zh) * 2017-01-03 2018-07-10 广东星立方厨电集团有限公司 一种内环和外环进气方向相对的灶具燃烧器

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1315325B1 (it) * 2000-04-28 2003-02-10 Paolo Moresco Bruciatore a gas per piano di cottura
IT1318126B1 (it) 2000-07-06 2003-07-23 Sabaf Spa Bruciatore con separatore interno
ITVE20010043A1 (it) * 2001-10-24 2003-04-24 Ohg Defendi S R L Bruciatore a gas a piu' settori di fiamma
ITPS20030015A1 (it) * 2003-04-18 2004-10-19 So M I Press Societa Metalli I Niettati Spa Bruciatore per fornelli a gas, di tipo perfezionato.
ITUD20030137A1 (it) * 2003-06-23 2004-12-24 Sami Srl Bruciatore a tripla corona.
FR2858393B1 (fr) * 2003-07-31 2005-09-30 Lemdys Receptacle pour bruleur a gaz a flamme interne, et ensemble de cuisson comprenant un tel receptacle et un tel bruleur
ES1056041Y (es) * 2003-11-11 2004-06-01 Fagor S Coop Quemador de gas de triple corona para placas de coccion.
ES2375855B1 (es) * 2009-01-26 2012-10-10 Butsir S.L Quemador doble de gas.
CN102128451B (zh) * 2011-03-28 2013-04-24 浙江优格厨电有限公司 灶具燃烧器
CN104154537B (zh) * 2014-08-07 2016-08-24 湖南省特种设备检验检测研究院娄底分院 一种前端配氧燃气涡流燃烧装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH499751A (de) * 1967-11-27 1970-11-30 Menalux S A Verfahren zum Verhindern des Erlöschens der Aussenbrenner eines Einbaugasherdes und Einrichtung zur Durchführung des Verfahrens
GB2223302A (en) * 1988-09-28 1990-04-04 Tiao Ho Yen Gas burner
IT1250838B (it) * 1991-09-26 1995-04-21 Merloni Elettrodomestici Spa Bruciatore di gas.
DE4427953A1 (de) * 1994-08-06 1996-02-08 Ruhrgas Ag Gasbrenner für Kochstellen eines Gasherdes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108266728A (zh) * 2017-01-03 2018-07-10 广东星立方厨电集团有限公司 一种内环和外环进气方向相对的灶具燃烧器
CN108266728B (zh) * 2017-01-03 2020-06-12 广东星立方厨电集团有限公司 一种内环和外环进气方向相对的灶具燃烧器

Also Published As

Publication number Publication date
WO1999011975A1 (fr) 1999-03-11
EP1025392A1 (fr) 2000-08-09
ES2206744T3 (es) 2004-05-16
AU3939497A (en) 1999-03-22
DE69724838D1 (de) 2003-10-16

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