EP2572141B1 - Gasbrenner mit mehreren flammenringen - Google Patents

Gasbrenner mit mehreren flammenringen Download PDF

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Publication number
EP2572141B1
EP2572141B1 EP11723373.4A EP11723373A EP2572141B1 EP 2572141 B1 EP2572141 B1 EP 2572141B1 EP 11723373 A EP11723373 A EP 11723373A EP 2572141 B1 EP2572141 B1 EP 2572141B1
Authority
EP
European Patent Office
Prior art keywords
burner
flame divider
inner portion
rim
flame
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.)
Active
Application number
EP11723373.4A
Other languages
English (en)
French (fr)
Other versions
EP2572141A2 (de
Inventor
Carlo Paesani
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.)
Defendi Italy SRL
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Defendi Italy SRL
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Filing date
Publication date
Application filed by Defendi Italy SRL filed Critical Defendi Italy SRL
Priority to PL11723373T priority Critical patent/PL2572141T3/pl
Publication of EP2572141A2 publication Critical patent/EP2572141A2/de
Application granted granted Critical
Publication of EP2572141B1 publication Critical patent/EP2572141B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/007—Mixing tubes, air supply regulation
    • 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
    • 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
    • F23D2900/14063—Special features of gas burners for cooking ranges having one flame ring fed by multiple venturis

Definitions

  • the present invention relates to a gas burner with multiple flame rings.
  • Single control gas burners with multiple concentric flame rings are known, i.e. burners in which the gas feed is controlled by a single tap.
  • These generally comprise an injector holder cup, a flame divider resting on the injector holder cup and formed from two parts joined together to form an inner central portion and an outer annular portion, an annular cover which closes the annular portion of the flame divider, and a discoidal cover which closes the central portion of the flame divider.
  • WO200605136 discloses a gas burner system for food cooking is described, comprising a pair of concentric burners , the gas to be supplied to the pair of burners being suitably mixed with air taken above the cooking top on which the burner system is mounted, so as to form an air-gas mixture for the pair of burners.
  • US2006121402 discloses a gas burner for cookers, of the type fitted to a cooking hob, comprising a central body having a first ring of flames and at least one external body, fluidly separated from said central body and substantially concentric with it, having at least one second (circumferential) ring of flames, as well as means for separately feeding the mixture of primary air and gas to the central body and to the external body.
  • An object of the invention is to provide a gas burner of multiple concentric ring type in which the number of components is reduced.
  • Another object of the invention is to provide a gas burner of multiple concentric ring type which is of limited overall height, such as to be able to be mounted on traditional built-in cooking hobs.
  • Another object of the invention is to provide a gas burner of multiple concentric ring type in which the primary air is drawn in from above the cooking hob, in order to prevent streaming, i.e. flame disturbance on sudden opening of the oven door or of a furniture item positioned below the cooking hob.
  • the burner of the invention comprises, in the embodiment shown in Figures 1-4 , three basic components consisting of the injector holder 2, the flame divider 4 and the cover 6.
  • the injector holder 2 is of essentially elongated extension and is shaped to define two cups 8 connected together by two baffles 10.
  • the two cups are closed lowerly and laterally and are open at their top, where the lateral wall is provided with an outwardly jutting flange 12 for resting against the underside of the sheet metal of a cooking hob 14, to which the burner is fixed by screws.
  • each cup 8 extends upperly beyond the flange 12 to form a rim 16 emerging from the cooking hob 14 and acting as the support element for the flame divider 4.
  • the injector holder 2 also comprises a gas feed conduit 18; it extends horizontally below the base of the two cups 8, it is open at one end for gas entry and communicates with two injectors 20 screwed centrally to the base of the cups.
  • the flame divider 4 rests on the injector holder 2 such that two of its downwardly jutting profiled projections 22 rest on the upper rims 16 of the two cups 8. These profiled projections 22 do not extend along the entire extension of the corresponding upper rims 16, but only along its two lateral portions and along its inner portion, such as to define between the flame divider 4 and the injector holder 2 two apertures for access of the primary air originating from above the cooking hob 14 into the two cups 8.
  • the flame divider 4 is centred about the injector holder 2 by projections 24, which extend downwards from the flame divider 2 and adhere via their outer vertical edge to the inner surface of the lateral wall of the two cups 8.
  • the flame divider 4 comprises an outer portion 26 of overall annular shape and an inner portion 28 of overall circular shape.
  • the outer portion 26 presents an outer rim 30 which extends along a circumference, and an inner rim 32, of which a certain part extends along a circumference concentric with that of the outer rim 30, then it curves inwards to connect to the circular rim 34 of the inner portion 28.
  • two substantially radial channels 36 are obtained providing fluidic connection between the inner circular portion 28 and the outer annular portion 26 of the flame divider 4.
  • a single continuous rim which comprises along its entire extension, with the exception of the parts relative to the two radial channels 26, a plurality of main ports 38 and secondary ports 40, which on the rim 30 form the outer ring of outwardly directed flames, on the rim 32 form the intermediate ring of inwardly directed flames, and on the rim 34 form the inner ring of outwardly directed flames.
  • the two rims bounding the radial channels 36 also present secondary apertures 42, the purpose of which is to transmit the flames from the intermediate ring to the inner ring.
  • two channels 43 are positioned provided with two small ports 44 for inter-ignition between the flames of the outer ring and those of the intermediate ring and inner ring.
  • the flame divider 4 also comprises two vertical conduits 46 which at their lower end face the two injectors 20 and open upperly at projections 48 which lowerly define two venture effect chambers bounded upperly by the cover 6, which rests on the flame divider 4 at four centring pegs 50 provided therein.
  • the flame divider 4 When the flame divider 4 rests via its profiled projections 22 on the upper rims 16 of the two cups 8, it is maintained spaced from the sheet metal of the cooking hob 14 by a distance such as to determine passages therewith for the secondary air intended for the inner portion 28 of the flame divider.
  • the cover 6 is formed in one piece and comprises an annular outer portion 52, a discoidal inner portion 54 and two profiled radial connection portions 56.
  • the gas entering from the conduit 18 leaves from the injectors 20 and enters the two vertical conduits 46 of the flame divider 4, to entrain the primary air drawn in from above the cooking hob 14 through the apertures defined by the outer part of the profiled projection 22 of each cup 8 and the overlying flame divider, in accordance with the path indicated by the arrows 58 in Figure 4 .
  • the mixture obtained in this manner then propagates along the annular portion 26 of the flame divider 4 to feed the two rings of outer and intermediate flames thereof, then further propagates along the two radial conduits 36 to feed the central ring of flames of the inner portion 28.
  • the burner of the invention is much more advantageous than traditional multi-flame ring burners, and in particular:
  • the gas/primary air mixture of the burner of the invention generated by the two radial venturi chambers is conveyed into the inner central portion 28 of the flame divider 4 not through radial channels bounded by the flame divider and the cover, as in the preceding embodiment, but by two radial channels 60 bounded by the flame divider 4 and the injector holder 2.
  • the injector holder 2 is provided, in the connection portion between the two cups 8, with two radial channels 60 which connect the two radial venturi mixing chambers to the inner portion 28 of the flame divider 4, which is also provided with baffles 62 for upperly closing said channels 60.
  • the cover 6 the purpose of which is no longer to upperly bound the radial channels connecting the two mixing chambers to the inner portion 28 of the flame divider 4, can be formed in two separate parts, of which the outer part is of approximately annular shape and the inner part is of discoidal shape.
  • FIG. 6 differs from the preceding embodiments by the addition, to the two cups 8 provided on their base with corresponding injectors, of a third central cup 8' provided on its base with a third injector 20', also communicating with the same gas feed conduit 18.
  • the inner portion 28 of the flame divider 4 communicates with the cup 8' via its own vertical conduit 46', through which the gas/primary air mixture is fed.
  • the flame divider 4 rests only partly on the underlying injector holder 2, such as to define access apertures for the primary air originating from above the cooking hob.

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

Claims (12)

  1. Gasbrenner mit mehreren Flammenringen, umfassend ein Einblasdüsen-Halterstück (2), einen Flammenteiler (4) mit einem äußeren Abschnitt (26) mit einer insgesamt ringförmigen Form und einem inneren Abschnitt (28) mit einer insgesamt kreisförmigen Form und Mittel (6) zum Schließen des äußeren und inneren Abschnitts von oben,
    - wobei das Einblasdüsen-Halterstück (2) mindestens zwei daran angebrachte Einblasdüsen (20, 20') mit einer im Wesentlichen vertikalen Achse trägt, die in einer im Wesentlichen diametralen Ebene des Brenners angeordnet sind,
    - wobei der Flammenteiler (4) mindestens zwei im Wesentlichen vertikale Leitungen (46, 46') umfasst, die den zwei Einblasdüsen (20, 20') des Einblasdüsenhalters (2) gegenüberliegen und sich nach oben in eine horizontale Venturieffekt-Kammer öffnen, die oben durch die Schließmittel (6) begrenzt ist,
    dadurch gekennzeichnet, dass
    - der Bereich stromabwärts der horizontalen vertikalen Venturieffekt-Kammer fluidisch mit dem inneren Abschnitt (28) des Flammenteilers (4) über zwei Kanäle (36, 60) verbunden ist.
  2. Brenner nach Anspruch 1 , dadurch gekennzeichnet, dass an dem Einblasdüsenhalter (2) zwei Einblasdüsen (20) angebracht sind, die an der Basis von zwei nach oben offenen und seitlich geschlossenen Bechern (8) angeordnet sind, die mit ihrer Seitenwand die vertikale Leitung (46) umgeben, die der entsprechenden Einblasdüse (20) gegenüberliegt.
  3. Brenner nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich die Seitenwand jedes Bechers (8) in Form eines Kranzes (16) nach oben über das Blech des Kochfeldes (14) hinaus erstreckt und darauf aufliegend einen entsprechenden profilierten Vorsprung (22) aufnimmt, unterhalb des Flammenteilers (4) hervorsteht und teilweise unterbrochen ist, um eine Öffnung zu bilden, die Zugang zu dem Innenraum des Bechers für die Primärluft bereitstellt, die oberhalb des Kochfeldes eingesogen wird.
  4. Brenner nach Anspruch 3, dadurch gekennzeichnet, dass der Flammenteiler (4), der durch seine profilierten Vorsprünge (22) auf dem oberen Kranz (16) jedes Bechers (8) aufliegt, den Flammenteiler von dem Blech des Kochfeldes (14) um eine ausreichende Menge angehoben hält, um dazwischen zwei Durchlässe für die Sekundärluft festzulegen, die den inneren Abschnitt (28) des Flammenteilers (4) speist.
  5. Brenner nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der innere Abschnitt (28) des Flammenteilers (4) eine insgesamt kreisförmige Form aufweist, wobei der äußere Abschnitt (26) eine insgesamt ringförmige Form aufweist, die zwei Verbreiterungen umfasst, an denen die horizontalen Venturieffekt-Kammern bereitgestellt sind.
  6. Brenner nach Anspruch 5, dadurch gekennzeichnet, dass der äußere Abschnitt (26) des Flammenteilers (4) einen äußeren Kranz (30), der sich entlang eines Umfangs erstreckt, und einen inneren Kranz (32) aufweist, von dem sich ein bestimmter Teil entlang eines Umfangs erstreckt, der intern konzentrisch mit dem vorherigen Umfang angeordnet ist, während der restliche Teil zwei hinterschnittene Bereiche bildet, die mit den Verbreiterungen des äußeren Abschnitts übereinstimmen.
  7. Brenner nach Anspruch 5, dadurch gekennzeichnet, dass der innere Abschnitt (28) des Flammenteilers (4) durch einen Kranz (34) begrenzt ist, der mit Ausnahme von Teilen, die mit dem äußeren Kranz (32) des äußeren ringförmigen Abschnitts (26) des Flammenteilers verbunden sind, eine kreisförmige Form aufweist.
  8. Brenner nach Anspruch 7, dadurch gekennzeichnet, dass die Verbindungsteile zwischen dem Kranz (34) des inneren Abschnitts (28) des Flammenteilers (4) und dem äußeren Kranz (32) seines äußeren Abschnitts (26) radiale Kanäle (36) definieren, die eine Fluidverbindung zwischen den radialen Venturieffekt-Kammern und dem inneren Abschnitt (28) bereitstellen.
  9. Brenner nach Anspruch 8, dadurch gekennzeichnet, dass die Schließmittel (6) aus einer Abdeckung bestehen, die einen ringförmigen äußeren Abschnitt (52) zum Schließen des äußeren ringförmigen Abschnitts (26) des Flammenteilers (4), einen kreisförmigen inneren Abschnitt (54) zum Schließen des kreisförmigen inneren Abschnitts (28) und zwei radiale profilierte Abschnitte (56), die den äußeren Abschnitt (52) und den inneren Abschnitt (54) miteinander verbinden, zum Schließen der radialen Kanäle (36) von oben umfasst.
  10. Brenner nach einem oder mehreren der vorhergehenden Ansprüche, gekennzeichnet durch das Bereitstellen, in dem Abschnitt des Einblasdüsenhalters (2), der die zwei Becher (8) miteinander verbindet, von zwei Kanälen (60), die jede horizontale Venturieffektkammer mit der Basis des inneren Abschnitts (28) des Flammenteilers (4) verbinden.
  11. Brenner nach einem oder mehreren der vorhergehenden Ansprüche, gekennzeichnet durch das Anbringen von drei Einblasdüsen (20, 20'), die an der Basis von drei Bechern (8, 8') angeordnet und in der diametralen Ebene des Brenners im Wesentlichen ausgerichtet sind, an dem Einblasdüsenhalter (2).
  12. Brenner nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Becher (8, 8') mit Zugangsöffnungen für die Primärluft bereitgestellt sind, die oberhalb des Kochfeldes eingesogen wird.
EP11723373.4A 2010-05-19 2011-05-17 Gasbrenner mit mehreren flammenringen Active EP2572141B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11723373T PL2572141T3 (pl) 2010-05-19 2011-05-17 Palnik gazowy z pewną liczbą kręgów płomieni

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVE2010A000023A IT1400182B1 (it) 2010-05-19 2010-05-19 Bruciatore a gas a più corone di fiamme.
PCT/EP2011/057994 WO2011144630A2 (en) 2010-05-19 2011-05-17 Gas burner with multiple flame rings

Publications (2)

Publication Number Publication Date
EP2572141A2 EP2572141A2 (de) 2013-03-27
EP2572141B1 true EP2572141B1 (de) 2014-10-15

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ID=43064607

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EP11723373.4A Active EP2572141B1 (de) 2010-05-19 2011-05-17 Gasbrenner mit mehreren flammenringen

Country Status (8)

Country Link
EP (1) EP2572141B1 (de)
CN (1) CN102906501B (de)
BR (1) BR112012027693B1 (de)
ES (1) ES2526144T3 (de)
IT (1) IT1400182B1 (de)
MX (1) MX345708B (de)
PL (1) PL2572141T3 (de)
WO (1) WO2011144630A2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2701432C2 (ru) * 2015-03-10 2019-09-26 Дефенди Итали С.Р.Л. Усовершенствованная газовая горелка
US11435076B2 (en) 2016-07-04 2022-09-06 BSH Hausgeräte Gas burner and domestic cooking appliance

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVE20130027A1 (it) * 2013-05-29 2014-11-30 Defendi Italy Srl Bruciatore a gas perfezionato.
EP3002513B1 (de) * 2014-09-30 2019-01-16 Electrolux Appliances Aktiebolag Gasbrenneranordnung für ein Kochfeld
KR102297756B1 (ko) * 2014-12-17 2021-09-03 엘지전자 주식회사 버너
KR102301481B1 (ko) * 2014-12-17 2021-09-14 엘지전자 주식회사 버너
KR102297799B1 (ko) * 2014-12-17 2021-09-03 엘지전자 주식회사 버너
WO2016145746A1 (zh) * 2015-03-13 2016-09-22 广东美的厨房电器制造有限公司 燃烧器及燃气用具
US10465903B2 (en) * 2015-03-13 2019-11-05 Guangdong Midea Kitchen Appliances Manufacturing Co., Ltd. Burner
WO2016145744A1 (zh) * 2015-03-13 2016-09-22 广东美的厨房电器制造有限公司 燃烧器
ES2717549A1 (es) * 2017-12-21 2019-06-21 Bsh Electrodomesticos Espana Sa Dispositivo inyector para un quemador de gas de un aparato domestico, quemador de gas, y aparato domestico
CN108332238B (zh) * 2018-02-08 2020-09-08 吴联凯 一种中餐式燃气灶
CN108317544B (zh) * 2018-02-08 2019-12-31 佛山市顺德区吉孚电器有限公司 一种中餐式燃气炒菜灶
IT201900004867A1 (it) * 2019-04-01 2020-10-01 Sabaf Spa Bruciatore a gas
IT202100001640A1 (it) 2021-01-27 2022-07-27 Sabaf Spa Bruciatore atmosferico a gas per apparecchi di cottura.
US11940148B2 (en) 2021-10-28 2024-03-26 Electrolux Appliances Aktiebolag Multi injection dual ring gas burner for domestic gas cooking units
CN114321917B (zh) * 2022-01-26 2023-04-07 佛山市顺德区美的洗涤电器制造有限公司 燃烧器以及燃气灶

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Publication number Priority date Publication date Assignee Title
ES2107401T3 (es) 1996-03-19 2000-02-01 Sabaf Spa Quemador de gas para dispositivos de cocina.
HU227511B1 (hu) * 2002-11-12 2011-07-28 Sabaf Spa Gázégõ gáztûzhelyekhez
MY147945A (en) * 2004-02-02 2013-02-15 Electrolux Ab Gas burner
ITTO20040794A1 (it) * 2004-11-12 2005-02-12 Merloni Elettrodomestici Spa Sistema di bruciatori di gas per la cottura di alimenti di tipo perfezionato
CN1920383B (zh) * 2006-09-18 2010-09-29 谭六明 上进风式深内旋燃烧器
US8932049B2 (en) * 2007-12-14 2015-01-13 Lg Electronics Inc. Top-burner and cooker comprising the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2701432C2 (ru) * 2015-03-10 2019-09-26 Дефенди Итали С.Р.Л. Усовершенствованная газовая горелка
US11435076B2 (en) 2016-07-04 2022-09-06 BSH Hausgeräte Gas burner and domestic cooking appliance

Also Published As

Publication number Publication date
CN102906501A (zh) 2013-01-30
BR112012027693A2 (pt) 2016-08-16
MX345708B (es) 2017-02-13
PL2572141T3 (pl) 2015-03-31
WO2011144630A2 (en) 2011-11-24
IT1400182B1 (it) 2013-05-17
ES2526144T3 (es) 2015-01-07
CN102906501B (zh) 2016-08-03
WO2011144630A3 (en) 2012-08-02
MX2012013002A (es) 2013-03-05
EP2572141A2 (de) 2013-03-27
ITVE20100023A1 (it) 2011-11-20
BR112012027693B1 (pt) 2020-10-27

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