EP1875132B1 - High-power double burner for gas cookers, with multiple concentric flame crowns - Google Patents

High-power double burner for gas cookers, with multiple concentric flame crowns Download PDF

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Publication number
EP1875132B1
EP1875132B1 EP06745290.4A EP06745290A EP1875132B1 EP 1875132 B1 EP1875132 B1 EP 1875132B1 EP 06745290 A EP06745290 A EP 06745290A EP 1875132 B1 EP1875132 B1 EP 1875132B1
Authority
EP
European Patent Office
Prior art keywords
burner
nozzles
nozzle
crowns
head
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
EP06745290.4A
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German (de)
English (en)
French (fr)
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EP1875132A1 (en
Inventor
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.)
Somipress - ' Metalli Iniettati Srl Soc
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Somipress - ' Metalli Iniettati Srl Soc
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Publication of EP1875132A1 publication Critical patent/EP1875132A1/en
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Publication of EP1875132B1 publication Critical patent/EP1875132B1/en
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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
    • F23D14/065—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 with injector axis inclined to the burner head axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • 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 patent application for industrial invention refers to a double burner for gas cookers, with multiple concentric flame crowns, characterised by high power and compact height.
  • double burner indicates a burner comprising two different gas inlet conduits, provided with corresponding taps, which separately supply two or more concentric flame crowns, which can be selectively turned on or off, being autonomously supplied by two channels derived from the said separate pair of inlet conduits.
  • the purpose of the present invention is to provide a double burner for gas cookers, with multiple concentric flame crowns, of known type, which is characterised by unprecedented power.
  • the power supported by the Venturi chamber depends on the diameter of its contracted section, or groove, which in turns affects the length of the Venturi diverging section, meaning that the groove section and the length of the Venturi diverging section must be increased to increase power.
  • the limited height of the burner prevents from extending the length of the Venturi chambers with vertical axis of the external burner.
  • EP 1 714 076 which is a prior art document in the sense of Article 54(3) EPC, discloses a gas burner having all the features of claim 1, except for the fact that the group of nozzles associated with external flame crowns is formed by minimum three nozzles that supply corresponding Venturi mixing chambers with inclined axis. Instead of this, the above-mentioned document discloses only two such nozzles.
  • the burner of the invention has been devised to overcome this typical functional limit of traditional burners.
  • the burner of the invention is provided with a central burner traditionally associated with a Venturi chamber with vertical axis and with a totally innovative external burner associated with more than two, preferably four, Venturi chambers with inclined axis and radial direction, each of them having a unitary power according to the burner dimensions.
  • each single Venturi chamber in order to obtain 4 kW, each single Venturi chamber must be loaded at 2 kW; in the case of a burner with four Venturi chambers, reducing the load of each Venturi chamber to 1.25 kW, minus 62.5%, a maximum power of 5kW is obtained, with consequent reduction of combustion values generated when the external burner delivers the maximum power.
  • the burner of the present invention traditionally comprises a tub-shaped body, whose bottom wall is traditionally provided with two different, non-communicating conduits with horizontal axis for gas inlet, each of them being designed to selectively supply the aforementioned channels.
  • Both gas inlet conduits reach the centre of the body at a slightly different height, in such a way that, if necessary, they can communicate by means of a hole with vertical axis that ends in the lower conduit from the upper one.
  • a vertical channel branches upwards from the upper inlet conduit, on which the first gas nozzle designed to introduce gas in the mixing chamber that supplies central flame crowns is mounted.
  • more than two ascending and diverging channels branch from the lower inlet conduit, on which corresponding nozzles designed to introduce gas in the mixing chamber that supplies the external flame crowns are mounted.
  • a shaped chamber with Venturi effect is housed downstream each gas nozzle, which favour mixing of gas with primary air extracted in the upper part of the cooktop.
  • the burner of the present invention is provided with minimum four mixing Venturi chambers, one central chamber with vertical axis above the first nozzle and minimum three regularly spaced three chambers with inclined axis, respectively supplied by different nozzles.
  • the head is formed of a lower dish and an upper dish, shaped in such a way that they can perfectly match in order to form the mixing chambers with inclined axis, while the mixing chamber with vertical axis is entirely situated in the centre of the upper dish, which is the dish with the concentric series of multiple toothed crowns.
  • the lower dish is provided with a lower series of radial partitions that determine self-centring and detachment from the nozzle-holder body. Detachment is indispensable to guarantee sufficient introduction of primary air extracted from above the cooktop.
  • the double burner of the invention comprises a circular tub-shaped body (1) which houses a raised central cross-piece (2) with housings for multiple gas nozzles.
  • the body (1) traditionally houses two different, non-communicating gas inlet conduits (3 and 4), each of them selectively and respectively supplying the nozzle associated with the central flame crown and the group of nozzles associated with the external flame crowns.
  • Both gas inlet conduits (3 and 4) reach the centre of the body (1) at slightly different heights; more precisely, the upper inlet conduit (3) exactly ends in the centre of the body (1), while the lower inlet conduit (4) goes beyond the centre, as shown in Fig. 1 .
  • a vertical channel (3a) branches upwards from the upper inlet conduit (3), on which the first gas nozzle (5) designed to introduce gas in the Venturi mixing chamber that supplies central flame crown (FC) is mounted; while four ascending and diverging channels (4a) branch from the lower inlet conduit (4), on which corresponding nozzles (6) designed to introduce gas in the mixing chambers that supplies the external flame crowns (FE) are mounted.
  • a Venturi mixing chamber (5a) with vertical axis is situated downstream the nozzle (5), while four Venturi mixing chambers (6a) with inclined axis, preferably from 40° to 60 °, are situated downstream the four nozzles (6).
  • the burner of the invention comprises a head (T) formed of a lower dish (7) and an upper dish (8) shaped in such a way that they perfectly match.
  • the lower dish (7) has a truncated-conical profile and has a stepped external border (7a) that supports and centres the upper dish (8) with a stepped perimeter collar (8a).
  • the upper dish (8) is also supported and centres in the central flange (9) of the lower dish (7).
  • the two dishes (7 and 8) respectively have semi-conduits (7b and 8b) that form the Venturi mixing chambers (6a); downstream the chambers a deflector partition (10) shaped as a V, is situated on the lower dish (7), which favours bifurcation of the air-gas mixture flow coming from the chambers (6a), conveying it inside the corridor (11) that supplies the external concentric flame crowns (FE), as shown in Fig. 4 , which clearly shows the three toothed crowns (12) above the upper dish (8).
  • FE external concentric flame crowns
  • the annular corridor (11) is formed of four identical consecutive and communicating corridor sections, each of them being bordered by a pair of deflector partitions (10).
  • the corridor (11) is closed by an annular cap (13), on whose internal and external border the aforementioned external concentric flame crowns (FE) are formed.
  • the Venturi mixing chamber (5a) is completely housed in the upper dish (8) and ends in a circular compartment laterally closed by the toothed crown (12) with lower diameter and superiorly by a circular cap (14), on whose external border the central concentric flame crown (FC) is formed.
  • the lower dish (7) is provided with a lower series of radial partitions (15) that determine self-centring and detachment from the nozzle-holder body (1), thus guaranteeing sufficient introduction of primary air (A) extracted from above the cooktop (P).
  • a hole with vertical axis is drilled in central position on the body (1), starting from the lower gas inlet conduit (4) and ending in the coaxial vertical channel (3a) where the nozzle (5) is engaged.
  • the length of the conduit (3) needs to be suitably reduced.
  • the body (1) is obtained with die-casting process, the reduction in length can be easily and cost-efficiently obtained by simply moving back the pin used inside the mould as "core" of the upper conduit (3).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP06745290.4A 2005-04-29 2006-04-20 High-power double burner for gas cookers, with multiple concentric flame crowns Active EP1875132B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000036A ITMC20050036A1 (it) 2005-04-29 2005-04-29 Doppio bruciatore per fornelli a gas, a piu' corone concentriche di fiamme, ad elevata potenza.
PCT/IT2006/000265 WO2006117815A1 (en) 2005-04-29 2006-04-20 High-power double burner for gas cookers, with multiple concentric flame crowns

Publications (2)

Publication Number Publication Date
EP1875132A1 EP1875132A1 (en) 2008-01-09
EP1875132B1 true EP1875132B1 (en) 2016-06-08

Family

ID=36608541

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06745290.4A Active EP1875132B1 (en) 2005-04-29 2006-04-20 High-power double burner for gas cookers, with multiple concentric flame crowns

Country Status (16)

Country Link
US (1) US20090047611A1 (uk)
EP (1) EP1875132B1 (uk)
CN (1) CN101166934B (uk)
AR (1) AR053598A1 (uk)
AU (1) AU2006242789B2 (uk)
BR (1) BRPI0610625B1 (uk)
CA (1) CA2605532A1 (uk)
EG (1) EG24890A (uk)
ES (1) ES2590558T3 (uk)
IT (1) ITMC20050036A1 (uk)
MX (1) MX2007013372A (uk)
PL (1) PL1875132T3 (uk)
RU (1) RU2406029C2 (uk)
UA (1) UA94227C2 (uk)
WO (1) WO2006117815A1 (uk)
ZA (1) ZA200709107B (uk)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10317088B2 (en) 2015-07-02 2019-06-11 Mabe, S.A. De C.V. Triple ring flame burner

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US7594812B2 (en) * 2005-01-17 2009-09-29 SO. M. I Press - Societa′ Metalli Iniettati, SpA Double burner for gas cookers, of the type provided with multiple concentric flame crowns
FR2889293B1 (fr) * 2005-07-29 2009-12-18 Burner Systems Int Bsi Bruleur a gaz a multiples couronnes de flammes concentriques
DE102006053425A1 (de) * 2006-11-13 2008-05-15 BSH Bosch und Siemens Hausgeräte GmbH Gasbrenner
ITTO20070133A1 (it) * 2007-02-26 2008-08-27 Indesit Co Spa Sistema di bruciatori di gas per apparecchi di cottura per alimenti
ITMI20070451A1 (it) * 2007-03-07 2008-09-08 Enzo Inzaghi Bruciatore modulare ad alimentazione ottimizzata per pistra di cottura
ITVE20070018A1 (it) * 2007-03-23 2008-09-24 Defendi Italy Srl Bruciatore perfezionato a gas per apparecchi di cottura.-
ITMC20070130A1 (it) * 2007-06-28 2008-12-29 Somi Press Soc Metalli Iniettati Spa Doppio bruciatore, di tipo perfezionato, per fornelli a gas a piu' corone di fiamme.
EP2039996B1 (en) * 2007-09-21 2014-08-06 Electrolux Home Products Corporation N.V. Gas burner for a cooktop
US8689779B2 (en) * 2009-01-23 2014-04-08 Bsh Bosch Und Siemens Hausgeraete Gmbh Gas burner
US10655844B2 (en) * 2009-02-10 2020-05-19 Bsh Home Appliances Corporation Pedestal for a burner of a household appliance
US10690351B2 (en) 2009-02-10 2020-06-23 Bsh Home Appliances Corporation Home cooking appliance having a pedestal burner
TR200901741A2 (tr) * 2009-03-06 2009-08-21 Turaş Gaz Armatürleri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Fırınlar için çoklu gaz yanışı sağlayan yakıcı.
ES2528199T3 (es) * 2009-03-18 2015-02-05 Electrolux Home Products Corporation N.V. Quemador de gas mejorado
ES2614653T3 (es) * 2009-03-19 2017-06-01 Electrolux Home Products Corporation N.V. Quemador de gas
ES2669035T3 (es) * 2010-12-22 2018-05-23 Sabaf S.P.A. Quemador de gas
US10145563B2 (en) * 2012-05-17 2018-12-04 Sabaf S.P.A. Method for manufacturing a gas burner
US20150107577A1 (en) * 2013-10-18 2015-04-23 Lg Electronics Inc. Burner
US20150132703A1 (en) * 2013-11-14 2015-05-14 Lennox Industries Inc. Double venturi burner
US10151479B2 (en) 2013-11-22 2018-12-11 Lennox Industries Inc. Burner assembly
US9513012B2 (en) 2013-12-11 2016-12-06 Whirlpool Corporation Additional primary air access for surface gas burners
US10591157B1 (en) * 2015-09-14 2020-03-17 Burner Systems International, Inc. Method of converting a burner with a dual use pot to single flow
CN109000235B (zh) * 2018-09-04 2023-09-08 佛山市顺德区美的洗涤电器制造有限公司 燃烧器
US11098892B2 (en) * 2019-06-27 2021-08-24 Bsh Home Appliances Corporation Dual venturi single chamber gas burner
US11248802B2 (en) 2019-10-18 2022-02-15 Whirlpool Corporation Orifice holder
KR20210087184A (ko) * 2020-01-02 2021-07-12 삼성전자주식회사 가스버너장치 및 이를 갖는 조리기기
US11774090B2 (en) * 2021-01-14 2023-10-03 Electrolux Home Products, Inc. Double-stacked gas burner
WO2022240373A2 (en) * 2021-05-12 2022-11-17 Liva Gaz Armaturleri Ve Endustriyel Mutfak Aksesuarlari Sanayi Ve Ticaret Limited Sirketi Burner for gas stoves

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EP1714076A1 (en) * 2004-02-13 2006-10-25 So.M.I. Press - Societa' Metalli Iniettati S.p.a. Double burner for gas cookers, of the type provided with multiple concentric flame crowns

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10317088B2 (en) 2015-07-02 2019-06-11 Mabe, S.A. De C.V. Triple ring flame burner

Also Published As

Publication number Publication date
AU2006242789A1 (en) 2006-11-09
ES2590558T3 (es) 2016-11-22
RU2406029C2 (ru) 2010-12-10
BRPI0610625B1 (pt) 2018-11-13
PL1875132T3 (pl) 2016-12-30
MX2007013372A (es) 2008-01-18
BRPI0610625A2 (pt) 2010-07-13
US20090047611A1 (en) 2009-02-19
EP1875132A1 (en) 2008-01-09
AU2006242789B2 (en) 2010-06-17
ITMC20050036A1 (it) 2006-10-30
WO2006117815A8 (en) 2007-04-26
RU2007144206A (ru) 2009-06-10
CN101166934A (zh) 2008-04-23
WO2006117815A1 (en) 2006-11-09
EG24890A (en) 2010-12-13
UA94227C2 (uk) 2011-04-26
AR053598A1 (es) 2007-05-09
CN101166934B (zh) 2010-12-15
CA2605532A1 (en) 2006-11-09
ZA200709107B (en) 2008-08-27

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