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EP0534301B1 - Gasbrenner zum Kochen von Nahrungsmitteln - Google Patents

Gasbrenner zum Kochen von Nahrungsmitteln Download PDF

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Publication number
EP0534301B1
EP0534301B1 EP92115822A EP92115822A EP0534301B1 EP 0534301 B1 EP0534301 B1 EP 0534301B1 EP 92115822 A EP92115822 A EP 92115822A EP 92115822 A EP92115822 A EP 92115822A EP 0534301 B1 EP0534301 B1 EP 0534301B1
Authority
EP
European Patent Office
Prior art keywords
flame
burner
passages
crown
gas burner
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
EP92115822A
Other languages
English (en)
French (fr)
Other versions
EP0534301A2 (de
EP0534301A3 (en
Inventor
Luciano Antonini
Antonio Quintini
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.)
Whirlpool EMEA SpA
Original Assignee
Merloni Elettrodomestici SpA
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 Merloni Elettrodomestici SpA filed Critical Merloni Elettrodomestici SpA
Publication of EP0534301A2 publication Critical patent/EP0534301A2/de
Publication of EP0534301A3 publication Critical patent/EP0534301A3/en
Application granted granted Critical
Publication of EP0534301B1 publication Critical patent/EP0534301B1/de
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
    • 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 present invention refers to a gas burner for food cooking, in particular a double flame-crown burner.
  • Burners of the described type are conceived so as to present a flame separator element having the shape of a circular ring (tore), from which two series of flames exit: the first being directed towards the external and the second being directed towards the interior of the ring.
  • burners of the described type allow to obtain a better heat distribution, and are therefore particularly suitable in the case of use of pans of a large diameter.
  • Double flame-crown burners of the known type have however some problems, in their functioning and in their installation and maintenance; it is for these reasons, for example, that burners with double flame-crown, of common use in kitchens (in the sense of cooking apparatuses), are rarely applied in built-in appliances.
  • a further disturbing element is the fact of withdrawing the air from a zone in which turbulence can be present, due to the thermal convection effect and, in the cases where it is foreseen, for effect of forced ventilation which assures any eventual electronic components from reaching dangerous temperatures.
  • a burner structure for a gas range comprising two concentric flame separators, the external of which defines a substantially toroidal chamber and is able to produce an external flame crown and an internal flame crown;
  • this burner structure which is of the type in which primary air is taken from below the cooking plane, the burner body is supported by a rack, which is fixed directly to the bottom of the gas range and a dripping plate is provided, installed on said rack.
  • the flame of the burner in addition to the primary air requested for the air-gas mixture, the flame of the burner also requires secondary air for the combustion.
  • Such secondary air is drawn from the environment and reaches the external flame-crown without problems; on the contrary it can reach the internal crown only with extreme difficulty, i.e. when the burner is ignited and the container to be heated is placed above
  • a possible solution to such a problem is to provide for several openings or vertical channels between the interior of the cooking apparatus and the central zone of the circular ring that realises the flame separator.
  • the aim of the present invention is that of obviating the abovementioned problems and to indicate a gas burner, in particular with a double flame-crown that is of simple realisation and maintenance, that assures greater installation flexibility and that, by means of a constant and correct drawing of the secondary air for the internal flame-crown, and of the primary air for its mixing with the gas, assures a perfect combustion.
  • a further aim of the present invention is that of indicating a gas burner for food cooking in which the combustion is not affected by occasional currents of air.
  • the present invention has for its subject a gas burner for food cooking having the characterizing features of the annexed claims 1 to 7.
  • reference number 1 indicates the burner subject of the present invention as a whole;
  • reference number 2 indicates a sump, on which is associated, in a removable way, a burner body, indicated with reference number 3; said body 3, is advantageously realised from two distinctive pieces, coupled between themselves by way of reciprocal references, for simplicity not represented in the drawings.
  • Said burner body has in its inferior part a central tubular portion 4 and radial centring fins 5, that realise a support plane for the body 3 on the sump 2; said fins 5 delimit radial passages, one of which is indicated with 6, such that the primary air drawn from the exterior can overcome the upper edge of the sump 2, descends in it and then ascends along the central hole of the tubular portion 4.
  • radial passages one of which is indicated with 6, such that the primary air drawn from the exterior can overcome the upper edge of the sump 2, descends in it and then ascends along the central hole of the tubular portion 4.
  • such passages 6 allow the drawing of the air from above the cooking plane, indicated with the letter P.
  • a circular ring-shaped flame separator element On the superior part of said burner body 3 a circular ring-shaped flame separator element, indicated with 7, is arranged, which in conjunction with said body 3 defines a chamber having an approximately toroidal shape, indicated with 8.
  • Said flame separator 7 has two series of slots 9a and 9b for the exit of the flames, realised on the external and internal walls of the ring flame separator; through such slots 9a and 9b the external flame-crown and the internal flame-crown are respectively obtained.
  • reference number 10 the duct for supplying the burner with gas is indicated; reference number 11 indicates the injector or nozzle through which the same gas is introduced to the sump 2; the vertical axis of said injector 11 is substantially the same as the tubular portion 4.
  • louvers Over the passages 6, in the body 3 of the burner, louvers, indicated with 12, are realised, for allowing the drawing and the passage of the secondary air necessary for the correct combustion of the internal flame-crown; such louvers 12 place the central zone of the flame separator element 7 in communication with the exterior of the burner 1, i.e. with its peripheral zone.
  • passages 13 With reference number 13 four passages are indicated, obtained in said burner body 3; they extend from the tubular portion 4, and are disposed with a radial symmetry in respect of the axis of the injector, indicated with 14, but they do not necessarily lie on a plane being perpendicular to said axis. Said passages 13, in union with the tubular portion 4, constitute a mixing element apt at inducing a Venturi effect upon the air-gas mixture.
  • baffles 16 delimit circular portions of said chamber 8, in a number being equivalent to those of the passages having a Venturi effect (in the case illustrated in the figures, visible in particular in figure 1, the burner is provided with four passages 13 and four partition baffles 16).
  • the gas arrives from duct 10 and, through the injector 11, and enters the sump 2.
  • the primary air necessary for obtaining the air-gas mixture is drawn from above the cooking plane, from a zone which is not subject to disturbing elements and, through the passages 6, it enters the sump 2, following the path indicated by the arrow of the reference number "6".
  • the mixture then flows to the exterior of said portions, through the slots 9a and 9b, in order to be ignited and produce the two flame-crowns, that are in this way functionally divided in a number being equal to the number of passages 13 provided and do not therefore significantly suffer from occasional currents of air.
  • the secondary air necessary for the combustion of the external flame-crown is drawn from the environment, in the zone proximate to the slots 9a.
  • this secondary air is drawn through the louvers 12, realised through the burner body 3; following the path indicated by the arrow of the reference number "12" said secondary air, from the peripheral zone of the burner 1, reaches the central zone of the ring constituting the flame separator element 7.
  • the drawing zone for the primary and secondary air, external to the burner and to the cabinet of the cooking apparatus, is thus substantially the same; in order to avoid the mixing of the primary air flow with the secondary air flow, besides appropriately choosing the shapes and the sizes of passages 6 and louvers 12, separation shields are advantageously provided, one of which is visible in figure 2 with reference number 17.
  • the burner object of the present invention has a greatly reduced vertical encumbrance; internal operations (for example the replacement or the regulation of the injector 11) can be carried out in a very easy manner, after having manually removed the flame separator 7 and the burner body 3.
  • the partition baffles 16 are obtained from the burner body 3, but the same could be obtained directly on the flame separator 7.

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. Gasbrenner zum Kochen von Nahrungsmitteln, mit einem Brennerkörper (3) und einem Flammenverteiler (7), die eine etwa ringförmige Kammer (8) bilden, deren beiden Seitenwände entsprechende Reihen von radialen Flammöffnungen (9A, 9B) zum Erzeugen eines ersten, außerhalb des Flammenverteilers (7) liegenden Flammenkranzes und eines zweiten, innerhalb des Flammenverteilers (7) liegenden Flammenkranzes aufweisen,
    dadurch gekennzeichnet, daß der Brennkörper (3) auf einem an der Kochebene (P) befestigten Sumpf (2) angeordnet ist, daß zwischen dem Brennerkörper (3) und dem Sumpf (2) eine Einlaßvorrichtung (6) zum Versorgen des Sumpfes (2) mit Primärluft von oberhalb der Kochebene (P) gebildet ist, und daß der Brennerkörper (3) einen oder mehrere Kanäle (12) aufweist, die sich radial zwischen der mittleren Zone des Flammenverteilers (7), in der der zweite Flammenkranz gebildet wird, und der peripheren Zone des Brennerkörpers (3) erstrecken, um den zweiten Flammenkranz mit Sekundärluft von oberhalb der Kochebene (P) zu versorgen.
  2. Gasbrenner nach Anspruch 1,
    dadurch gekennzeichnet, daß zwischen der Einlaßvorrichtung (6) und dem einen oder den mehreren Kanälen (12) Trennmittel (17) vorgesehen sind, um ein Wiedervermischen der Ströme von Primärluft und Sekundärluft zu verhindern.
  3. Gasbrenner nach Anspruch 1,
    dadurch gekennzeichnet, daß der Brennerkörper (3) in einem niedrigeren Bereich einen rohrförmigen Abschnitt (4) und eine Mehrzahl von radialen Rippen (5) aufweist, die den Brennerkörper (3) auf dem Sumpf (2) haltern, wobei die Rippen (5) radiale Kanäle (6), die die Einlaßvorrichtung (6) für die Primärluft bilden, gegeneinander abgrenzen.
  4. Gasbrenner nach Anspruch 3,
    dadurch gekennzeichnet, daß innerhalb des Sumpfes (2) ein Gasinjektor (11) etwa koaxial zu dem rohrförmigen Abschnitt (4) angeordnet ist, und daß mindestens zwei Kanäle (13), die radial symmetrisch zu der Achse (14) des Injektors (11) angeordnet sind, den rohrförmigen Abschnitt (4) mit der Kammer (8) verbinden.
  5. Gasbrenner nach Anspruch 4,
    dadurch gekennzeichnet, daß die Kanäle (13) innerhalb des Brennerkörpers (3) gebildet sind.
  6. Gasbrenner nach mindestens einem der vorstehenden Ansprüche,
    dadurch gekennzeichnet, daß innerhalb der Kammer (8) Trennwände (16) vorgesehen sind, die eine entsprechende Anzahl von Kreissegmentabschnitten in der Kammer (8) definieren, und daß die Trennwände (16) insbesondere an dem Flammenverteiler (7) oder dem Brennerkörper (3) gebildet sind.
  7. Gasbrenner nach den Ansprüchen 4 und 6,
    dadurch gekennzeichnet, daß die Anzahl von Abschnitten gleich der Anzahl der Kanäle (13) ist, so daß die Flammenkränze funktionell in eine Anzahl aufgeteilt werden, die der vorgesehenen Anzahl von Kanälen (13) entspricht.
EP92115822A 1991-09-26 1992-09-16 Gasbrenner zum Kochen von Nahrungsmitteln Expired - Lifetime EP0534301B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO910723 1991-09-26
ITTO910723A IT1250838B (it) 1991-09-26 1991-09-26 Bruciatore di gas.

Publications (3)

Publication Number Publication Date
EP0534301A2 EP0534301A2 (de) 1993-03-31
EP0534301A3 EP0534301A3 (en) 1993-06-16
EP0534301B1 true EP0534301B1 (de) 1997-05-14

Family

ID=11409602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92115822A Expired - Lifetime EP0534301B1 (de) 1991-09-26 1992-09-16 Gasbrenner zum Kochen von Nahrungsmitteln

Country Status (4)

Country Link
EP (1) EP0534301B1 (de)
DE (1) DE69219711T2 (de)
ES (1) ES2103859T3 (de)
IT (1) IT1250838B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007519885A (ja) * 2004-02-02 2007-07-19 アクティエボラゲット エレクトロラックス ガスバーナ

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1268490B1 (it) * 1993-07-16 1997-03-04 Defendi Srl Off Mec Bruciatore a gas a doppia corona particolarmente per piani di cottura ad incasso
IT1273115B (it) * 1994-04-08 1997-07-04 Merloni Elettrodomestici Spa Bruciatore di gas ad assetto variabile e piano di cottura incorporante tale bruciatore
SI0797048T1 (en) * 1996-03-19 1999-12-31 Sabaf S.P.A. Gas burner for kitchen appliances
ES2147076B1 (es) * 1997-03-14 2001-03-01 Sourdillon Sa Quemador de gas para cocinas, perfeccionado.
IT1294585B1 (it) * 1997-08-11 1999-04-12 Defendi Srl Off Mec Bruciatore a gas a piu' settori di fiamma.
DE69724838D1 (de) * 1997-08-28 2003-10-16 Electrolux Ab Gasbrenner für kochstellen
EP0903538A1 (de) 1997-09-23 1999-03-24 SABAF S.p.A. Gasbrenner
FR2770620B1 (fr) 1997-11-04 2000-01-28 Sourdillon Sa Bruleur a gaz pour cuisiniere ou plan de cuisson
FR2804496B1 (fr) * 2000-01-28 2002-07-19 Sourdillon Sa Bruleur a gaz a multiples couronnes de flammes
US6322354B1 (en) 2000-07-17 2001-11-27 Wolf Appliance Company, Llc Stacked dual gas burner
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
US9541294B2 (en) * 2013-08-06 2017-01-10 Whirlpool Corporation Inner swirling flame gas burner
US10436451B2 (en) 2016-10-06 2019-10-08 Whirlpool Corporation Cap to change inner flame burner to vertical flame
CN111720823B (zh) * 2020-06-22 2024-09-03 陈毅 一种燃烧器火盖

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507743B1 (fr) * 1981-06-15 1986-05-30 Sabaf Spa Bruleur pour rechauds et plans de cuisson a gaz en general

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH114790A (de) * 1925-04-09 1926-04-16 Vilhelm Brostrom Frederik Lotrechter Gasbrenner mit auswechselbarer Mischkammerdecke.
FR1335280A (fr) * 1962-09-07 1963-08-16 Fargas S P A Brûleur perfectionné pour cuisinières à gaz
GB1079532A (en) * 1965-01-27 1967-08-16 Parkinson Cowan Appliances Ltd Gas burners
JPS6016229A (ja) * 1984-06-05 1985-01-28 Matsushita Electric Ind Co Ltd ガスこんろ
IT1232887B (it) * 1989-07-27 1992-03-05 Merloni Elettrodomestici Spa Bruciatore di gas per cottura di alimenti
GB2233444B (en) * 1989-08-16 1992-08-26 Lee Cheng San Improvements in and relating to gas cooker hobs
ATE149662T1 (de) * 1990-11-12 1997-03-15 De Longhi Spa Brenner, insbesondere für gaskochervorrichtung, mit einer grossen betriebsflexibilität

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507743B1 (fr) * 1981-06-15 1986-05-30 Sabaf Spa Bruleur pour rechauds et plans de cuisson a gaz en general

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007519885A (ja) * 2004-02-02 2007-07-19 アクティエボラゲット エレクトロラックス ガスバーナ
JP4842841B2 (ja) * 2004-02-02 2011-12-21 アクティエボラゲット エレクトロラックス ガスバーナ

Also Published As

Publication number Publication date
DE69219711T2 (de) 1997-11-13
EP0534301A2 (de) 1993-03-31
ES2103859T3 (es) 1997-10-01
DE69219711D1 (de) 1997-06-19
EP0534301A3 (en) 1993-06-16
ITTO910723A0 (it) 1991-09-26
IT1250838B (it) 1995-04-21
ITTO910723A1 (it) 1993-03-26

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