EP2174062B1 - Improved double burner for gas hot plates with multiple flame crowns - Google Patents

Improved double burner for gas hot plates with multiple flame crowns Download PDF

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Publication number
EP2174062B1
EP2174062B1 EP08774156.7A EP08774156A EP2174062B1 EP 2174062 B1 EP2174062 B1 EP 2174062B1 EP 08774156 A EP08774156 A EP 08774156A EP 2174062 B1 EP2174062 B1 EP 2174062B1
Authority
EP
European Patent Office
Prior art keywords
burner
nozzles
head
external
venturi mixing
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
EP08774156.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2174062A2 (en
Inventor
Paolo Serenellini
Andrea Mandolesi
Enrico Morelli
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
Original Assignee
Somipress - ' Metalli Iniettati Srl Soc
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 Somipress - ' Metalli Iniettati Srl Soc filed Critical Somipress - ' Metalli Iniettati Srl Soc
Publication of EP2174062A2 publication Critical patent/EP2174062A2/en
Application granted granted Critical
Publication of EP2174062B1 publication Critical patent/EP2174062B1/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
    • 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
    • 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
    • F23D14/70—Baffles or like flow-disturbing devices
    • 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
    • F23D2900/00003—Fuel or fuel-air mixtures flow distribution devices upstream of the outlet
    • 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 patent application for industrial invention relates to a double burner for gas hot plates as described in the document WO2006/117815A .
  • 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 injection nozzles.
  • Two different, non-communicating gas inlet conduits (3 and 4) are obtained under the body (1), each of them being designed to selectively and respectively feed the nozzle associated with the central flame crown and the group of nozzles associated with the external flame crowns.
  • the two 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 said centre, as shown in Fig. 1 .
  • a vertical channel (3a) branches upwards from the upper inlet conduit (3), on which the first gas injection nozzle (5) designed to introduce gas in the Venturi mixing chamber that supplies the central flame crown (FC) is mounted, while four ascending diverging channels (4a) branch from the lower inlet conduit (4), on which corresponding injection nozzles (6) designed to introduce gas in the mixing chambers that feed the external flame crowns (FE) are mounted.
  • a radial Venturi mixing chamber (5a) with vertical axis is situated downstream the nozzle (5), while four axial 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 as to match perfectly.
  • the lower dish (7) has a truncated-conical profile and 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 centred in the central flange (9) of the lower dish (7).
  • the two dishes (7 and 8) are respectively provided with semi-conduits (7b and 8b) that form the said axial Venturi mixing chambers (6a); a V-shaped deflector partition (10) obtained on the lower dish (7) is situated immediately downstream the chambers (6a), being designed to favour bifurcation of the ascending air-gas mixture flow from the chambers (6a), conveying it inside the corridor (11) that feeds the external concentric flame crowns (FE), as shown in Fig. 3 , which also illustrates the three toothed crowns (12) obtained above the upper dish (8).
  • the annular corridor (11) is formed of four identical consecutive 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 said external concentric flame crowns (FE) are formed.
  • the Venturi mixing chamber (5) is completely housed in the upper dish (8) and ends in a circular compartment closed laterally by the toothed crown (12) with lower diameter and on top by a circular cap (14), on whose external border the central concentric flame crown (FC) is formed.
  • the overpressure increases the speed of the mixing to the holes from which the external flames (FE) emanate.
  • the purpose of the present invention is to remedy the aforementioned inconvenience in order to obtain a double burner with multiple flame crowns with the following advantages: high power, compact height and uniform external flames (FE) in terms of length and colour.
  • FE uniform external flames
  • the model of improved burner of the invention is characterised in that it comprises a deflector partition with suitable profile situated in front of the outlet of the axial Venturi mixing chambers with inclined axis, which forces the mixture to deflect and extend its travel before it reaches the outflow holes of the external flames (FE) situated in the area in front of the outlet.
  • a deflector partition with suitable profile situated in front of the outlet of the axial Venturi mixing chambers with inclined axis, which forces the mixture to deflect and extend its travel before it reaches the outflow holes of the external flames (FE) situated in the area in front of the outlet.
  • the mixture is reduced by the desired value so that all external flames (FE) have the same length and the same colour.
  • figures 4 , 5 and 6 illustrate the head (T) of the burner, and not the body, since the modification according to the present invention is only situated inside the head, and the body of the improved burner is not subjected to any constructive variation with respect to the previous embodiment.
  • a deflector partition (100) is provided in front of the outlet of the Venturi mixing chambers (6a), which forces the mixture to deflect laterally and downwards to reach the openings (101) that give access to the two corridors (11) that branch on the two sides of the said deflector partition (100).
  • the deflector partition (100) is obtained in one moulded piece with the upper dish (8) of the head (T), where a pair of openings (101) astride each partition (100) is obtained.
  • Circular corridors (11) are obtained on the upper side of the dish (8) and partially house an annular cap (102) provided with a series of holes (103) from which the external flames (FE) emanate.
  • the annular cap (102) has a transversal sunken mushroom-shaped section, with head situated above the corridors (11) and provided with the said series of holes (103).
  • the mixture that comes out of the openings (101) is conveyed inside the corridors (11) and travels along the groove (102a) sunken under the annular cap (102), from which it comes out through the series of holes (103).
  • a deflector partition (100) is positioned between the outlet and the holes (103), which forces the mixture to deflect laterally in the two directions and downwards until it passes through the opposite pair of openings (101) that give access to the corridors (11).
  • the mixture flow coming out of the openings (101) is divided into two flows (F1 and F2) with opposite directions.
  • the first flow (F1) passes over the partition (100), inverting the direction to reach and feed the holes (103) situated under the partition (100) before the outlet of the Venturi mixing chambers (6a).
  • the second flow (F2) goes towards the holes (103) situated at furthest distance from the deflector partition (100).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP08774156.7A 2007-06-28 2008-06-19 Improved double burner for gas hot plates with multiple flame crowns Active EP2174062B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000130A ITMC20070130A1 (it) 2007-06-28 2007-06-28 Doppio bruciatore, di tipo perfezionato, per fornelli a gas a piu' corone di fiamme.
PCT/EP2008/057822 WO2009000754A2 (en) 2007-06-28 2008-06-19 Improved double burner for gas hot plates with multiple flame crowns

Publications (2)

Publication Number Publication Date
EP2174062A2 EP2174062A2 (en) 2010-04-14
EP2174062B1 true EP2174062B1 (en) 2017-08-30

Family

ID=39831635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08774156.7A Active EP2174062B1 (en) 2007-06-28 2008-06-19 Improved double burner for gas hot plates with multiple flame crowns

Country Status (14)

Country Link
US (1) US20100163013A1 (ru)
EP (1) EP2174062B1 (ru)
CN (1) CN101715531B (ru)
AR (1) AR067113A1 (ru)
BR (1) BRPI0813221A2 (ru)
CL (1) CL2008001828A1 (ru)
EC (1) ECSP109876A (ru)
EG (1) EG25301A (ru)
IT (1) ITMC20070130A1 (ru)
MX (1) MX2009014155A (ru)
RU (1) RU2461774C2 (ru)
UA (1) UA97399C2 (ru)
WO (1) WO2009000754A2 (ru)
ZA (1) ZA200908970B (ru)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2528199T3 (es) * 2009-03-18 2015-02-05 Electrolux Home Products Corporation N.V. Quemador de gas mejorado
CN101995020B (zh) * 2009-08-27 2014-07-23 博西华电器（江苏）有限公司 一种燃气灶用燃烧器火盖及应用了该燃烧器火盖的燃气灶燃烧器
BR112013015858B1 (pt) * 2010-12-22 2020-10-13 Sabaf S.P.A. queimador de gás
CN202494111U (zh) * 2012-02-16 2012-10-17 梁锦洪 燃气灶用的燃烧器
US9541294B2 (en) 2013-08-06 2017-01-10 Whirlpool Corporation Inner swirling flame gas burner
CN107667256B (zh) * 2015-05-19 2019-10-18 Somipress注射金属协会股份责任有限公司 双火焰冠部气体燃烧器
US10436451B2 (en) 2016-10-06 2019-10-08 Whirlpool Corporation Cap to change inner flame burner to vertical flame
US11940148B2 (en) 2021-10-28 2024-03-26 Electrolux Appliances Aktiebolag Multi injection dual ring gas burner for domestic gas cooking units
CN114992631B (zh) * 2022-05-25 2023-04-11 河南凯盛石油设备有限公司 一种双通道分解炉燃烧器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732541A2 (fr) * 1995-03-17 1996-09-18 OVER ALL srl Brûleur à gaz pour des tables de cuisson en vitrocéramique et pour le chauffage
US7991954B2 (en) * 2002-11-28 2011-08-02 Renesas Electronics Corporation Memory module, memory system, and information device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1294585B1 (it) * 1997-08-11 1999-04-12 Defendi Srl Off Mec Bruciatore a gas a piu' settori di fiamma.
RU2295090C2 (ru) * 2002-11-12 2007-03-10 Сабаф С.П.А. Газовая горелка с раздельным питанием корон пламени
JP3860568B2 (ja) * 2003-11-28 2006-12-20 リンナイ株式会社 親子バーナ
ITMC20040024A1 (it) * 2004-02-13 2004-05-13 So Mi Press Societa Metalli In Doppio bruciatore per cucine a gas, del tipo a piu' corone concentriche di fiamme
ITVE20040031A1 (it) * 2004-07-09 2004-10-09 Ohg Defendi S R L Bruciatore a piu' settori di fiamme.
ITMC20050036A1 (it) * 2005-04-29 2006-10-30 So M I Press Societa Metalli Iniettati Spa Doppio bruciatore per fornelli a gas, a piu' corone concentriche di fiamme, ad elevata potenza.
FR2889293B1 (fr) * 2005-07-29 2009-12-18 Burner Systems Int Bsi Bruleur a gaz a multiples couronnes de flammes concentriques
US7661954B2 (en) * 2005-09-13 2010-02-16 Uwe Harneit Gas burner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732541A2 (fr) * 1995-03-17 1996-09-18 OVER ALL srl Brûleur à gaz pour des tables de cuisson en vitrocéramique et pour le chauffage
US7991954B2 (en) * 2002-11-28 2011-08-02 Renesas Electronics Corporation Memory module, memory system, and information device

Also Published As

Publication number Publication date
UA97399C2 (ru) 2012-02-10
RU2010102725A (ru) 2011-08-10
ITMC20070130A1 (it) 2008-12-29
ZA200908970B (en) 2010-08-25
WO2009000754A3 (en) 2009-11-26
CN101715531B (zh) 2011-07-06
EG25301A (en) 2011-12-07
CN101715531A (zh) 2010-05-26
US20100163013A1 (en) 2010-07-01
MX2009014155A (es) 2010-03-01
WO2009000754A2 (en) 2008-12-31
CL2008001828A1 (es) 2008-10-17
ECSP109876A (es) 2010-02-26
RU2461774C2 (ru) 2012-09-20
EP2174062A2 (en) 2010-04-14
BRPI0813221A2 (pt) 2014-12-23
AR067113A1 (es) 2009-09-30

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