EP0534302A2 - Brûleur à gaz pour la cuisson d'aliments - Google Patents

Brûleur à gaz pour la cuisson d'aliments Download PDF

Info

Publication number
EP0534302A2
EP0534302A2 EP92115823A EP92115823A EP0534302A2 EP 0534302 A2 EP0534302 A2 EP 0534302A2 EP 92115823 A EP92115823 A EP 92115823A EP 92115823 A EP92115823 A EP 92115823A EP 0534302 A2 EP0534302 A2 EP 0534302A2
Authority
EP
European Patent Office
Prior art keywords
series
burner
orifices
flames
gas
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.)
Withdrawn
Application number
EP92115823A
Other languages
German (de)
English (en)
Other versions
EP0534302A3 (en
Inventor
Antonini Luciano
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 EP0534302A2 publication Critical patent/EP0534302A2/fr
Publication of EP0534302A3 publication Critical patent/EP0534302A3/en
Withdrawn legal-status Critical Current

Links

Images

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

Definitions

  • the present invention refers to a gas burner for cooking appliances, of the type which can be utilised with gases of different kinds.
  • Such kinds of gas have physical characteristics (such as density, calorific power, combustion speed, etc.) very different between themselves and thus burners have to be realised taking into account such different characteristics (for example, gas obtained by the liquefaction of petroleum require burners being well calculated, due to the great quantity of primary air required, and in which the slots of the flame separator rings have to be sized with great precision, because of the low combustion speed of such kinds of gas).
  • physical characteristics such as density, calorific power, combustion speed, etc.
  • burners provide for gas injectors that have to be adjusted, when the cooking appliance is installed, depending on the type of gas to be used; with such operation the flow of primary air is determined, with which the gas coming from the mains supply will be mixed inside the burner, for realising the flammable mixture.
  • a first system is that of stabilising the main flame by means of a smaller flame, the so-called "pilot flame”; such a pilot flame is a continuous flame, present at the base of the main flame, that exits the burner with a speed very near to the combustion speed of the more critical gas, and thus performs a stabilising function.
  • the second system generally used is that of providing the burner with a flame separator which presents orifices or slots having different sizes, from which the main flames can exit with different exit speeds, in order to compensate for the different combustion speed of the usable gas.
  • the openings for the pilot flame are in fact generally realised in form of recesses on the lower edge of the flame separator, that lies on the head of the burner; for the cited precision exigencies, the profile of the flame separator must bear almost perfectly on the head of the burner and this is very difficult to obtain with pressed pieces; in the case in which there is not a perfect compliance, in fact, the pilot flames cannot correctly fulfil their function, because through the relative slots an incorrect quantity of mixture will exit, and a poor combustion will result.
  • the aim the present invention is thus that to solve the above cited problems and to indicate a multigas burner which allows for avoiding the undesired phenomenon, such as the flame detaching or the back-fire, which is of simple industrial manufacturing, reliable over time, of simple maintenance, of easy cleaning, and inexpensive.
  • a gas burner for cooking appliances of the type which can be used with gases of different kinds, characterised in that the flame separator element, to which a cover is superposed, is integrated in the head of the burner, made of a single piece with it, and provides for different orifices, for the exit of the air-gas mixture, disposed in two rings, an upper one and a lower one, in that a first series of said orifices, provided for supplying main flames, have a section such that the exit speed of the mixture is higher than the combustion speed of the most critical type of gas and in that a second series of said orifices, provided for supplying pilot flames, have means to reduce the exit speed of the mixture, so that it results in being minor in respect of the exit speed from the orifices of the first series, in order to stabilise said pilot flames and, as a result, the main flames.
  • reference number 1 indicates the head of a burner; here it has to be specified that burners of the known type are generally composed, in the order of four parts: a sump - arranged beneath the cooking plane -, a head - arranged on the cooking plane, between the sump and flame separator -, a flame separator and a cover - the latter being arranged on the flame separator ; in the burner according to the invention the flame separator is integrated with the head of the burner.
  • the head 1 has within its perimeter a series of slots 2, realised in the form of notches on its upper edge; between two successive slots 2, the head 1 provides for second slots 3, of minor height if compared to the previous ones, as can be clearly seen in figure 2.
  • the burner cover On the upper edge of the head 1 lies the burner cover, indicated with 4, that thus delimits upwardly the cited slots 2 and 3; such cover has in its lower section a ringed zone being of a reduced thickness, that determines along its entire perimeter a wall 5, directed downwardly, having a height substantially analogous to that of the recesses forming the slots 3 and placed in front of them; of course the cover 4 provides for appropriate support and centring means in respect of the head 1, realised for example by means of small protrusions that engage in corresponding cavities of the head (or vice versa), that for simplicity have not been represented in the figures.
  • Such counter-pressure has thus the effect of reducing the exiting flow speed, a speed that is thus carried back to the value of the combustion speed of the most critical gas for the flame detaching.
  • FIG 3 represents a partial and schematic section of the gas burner according to the present invention, in a second embodiment; in such figure the head of the burner, indicated with 1 as a whole, includes two series of calibrated holes 9 and 10, disposed one above the other.
  • the burner includes also in this case a cover, indicated with 4, directly arranged on the head 1.
  • the holes 10 realising the lower series have a double holing, i.e. two portions of different diameters; in particular, the zone, indicated with 11, of the end of the hole 10 towards the interior of the head 1 has a smaller diameter if compared to the zone, indicated with 12, towards the exterior of the same head.
  • the double holing of holes 10 actually has the function of stabilising the flames in case of use of gas that favours the detaching: the diameter of the hole 11 determines the flow of the mixture (thermal flow of the flame), while the diameter of the hole 12, being greater than the first, determines a diminution in the exit speed of the air-gas mixture.
  • the ratio between the two holes 11 and 12 allows to obtain an exit speed of the mixture lower than the mixture which exits holes 9, and so pilot flames which are stable, also in presence of gas that favours the flame detaching, in a way that they stabilise the main flames exiting by the upper holes 9.
  • the head of the burner described with reference to figures 1 and 2 is obtainable entirely with a single pressing operation, while the head of the burner of figure 3 is obtainable through a pressing and drilling operation.
  • the described burner can be indifferently a burner of the type that takes the primary air for the formation of the air-gas mixture from above or below the cooking plane.
  • the burner can provide for a sensor, for measuring the temperature reached by food contained in cooking containers, or electric/electronic ignition devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP19920115823 1991-09-26 1992-09-16 Gas burner for food cooking Withdrawn EP0534302A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO910724A IT1250839B (it) 1991-09-26 1991-09-26 Bruciatore di gas per la cottura di alimenti
ITTO910724 1991-09-26

Publications (2)

Publication Number Publication Date
EP0534302A2 true EP0534302A2 (fr) 1993-03-31
EP0534302A3 EP0534302A3 (en) 1993-06-16

Family

ID=11409603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920115823 Withdrawn EP0534302A3 (en) 1991-09-26 1992-09-16 Gas burner for food cooking

Country Status (2)

Country Link
EP (1) EP0534302A3 (fr)
IT (1) IT1250839B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995026484A1 (fr) * 1994-03-25 1995-10-05 General Electric Company Bruleur atmospherique a veilleuse de diffusion assurant une meilleure stabilite dynamique
EP0945679A1 (fr) * 1998-03-26 1999-09-29 Gaz De France Brûleur à gaz pour appareils de cuisson
US6371754B1 (en) * 2000-01-04 2002-04-16 General Electric Company Flame stabilizing channel for increased turn down of gas burners
DE10222641A1 (de) * 2002-05-20 2003-12-04 Isphording Germany Gmbh Gasbrenner mit oberer Simmerflamme
WO2008082865A1 (fr) * 2006-12-29 2008-07-10 Electrolux Home Products, Inc. Brûleur en étoile à stabilité de flamme
EP2090826A1 (fr) * 2008-02-15 2009-08-19 BSH Bosch und Siemens Hausgeräte GmbH Brûleur à gaz
EP2105662A1 (fr) 2008-03-25 2009-09-30 Electrolux Home Products Corporation N.V. Plaque de cuisson avec brûleur de plaque de cuisson amélioré

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE819314C (de) * 1950-08-20 1951-10-31 Frank Sche Eisenwerke Ag Gasbrenner
NL298388A (fr) * 1963-09-25
FR1487120A (fr) * 1966-07-20 1967-06-30 Brûleur de cuisine
US5040970A (en) * 1990-04-12 1991-08-20 Robertshaw Controls Company Burner construction and method of making the same

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995026484A1 (fr) * 1994-03-25 1995-10-05 General Electric Company Bruleur atmospherique a veilleuse de diffusion assurant une meilleure stabilite dynamique
EP0945679A1 (fr) * 1998-03-26 1999-09-29 Gaz De France Brûleur à gaz pour appareils de cuisson
FR2776753A1 (fr) * 1998-03-26 1999-10-01 Gaz De France Bruleur a gaz pour appareils de cuisson
US6082994A (en) * 1998-03-26 2000-07-04 Gaz De France Gas burner for cooking apparatus
US6371754B1 (en) * 2000-01-04 2002-04-16 General Electric Company Flame stabilizing channel for increased turn down of gas burners
US6780008B2 (en) 2002-05-20 2004-08-24 Isphording Germany Gmbh Gas stove burner with simmer flame
DE10222641A1 (de) * 2002-05-20 2003-12-04 Isphording Germany Gmbh Gasbrenner mit oberer Simmerflamme
WO2008082865A1 (fr) * 2006-12-29 2008-07-10 Electrolux Home Products, Inc. Brûleur en étoile à stabilité de flamme
US7628609B2 (en) 2006-12-29 2009-12-08 Electrolux Home Products, Inc. Hub and spoke burner with flame stability
US7871264B2 (en) 2006-12-29 2011-01-18 Electrolux Home Products, Inc. Hub and spoke burner port configuration
US8057223B2 (en) 2006-12-29 2011-11-15 Electrolux Home Produce Hub and spoke burner with flame stability
EP2090826A1 (fr) * 2008-02-15 2009-08-19 BSH Bosch und Siemens Hausgeräte GmbH Brûleur à gaz
CN101509672B (zh) * 2008-02-15 2014-08-20 Bsh博施及西门子家用器具有限公司 燃气灶
EP2105662A1 (fr) 2008-03-25 2009-09-30 Electrolux Home Products Corporation N.V. Plaque de cuisson avec brûleur de plaque de cuisson amélioré
US9416963B2 (en) 2008-03-25 2016-08-16 Electrolux Home Products Corporation N.V. Cooking top with improved gas top burner

Also Published As

Publication number Publication date
EP0534302A3 (en) 1993-06-16
ITTO910724A1 (it) 1993-03-26
ITTO910724A0 (it) 1991-09-26
IT1250839B (it) 1995-04-21

Similar Documents

Publication Publication Date Title
US7291009B2 (en) Dual stacked gas burner and a venturi for improving burner operation
US6082994A (en) Gas burner for cooking apparatus
EP2182293A1 (fr) Plaque de cuisson avec brûleur à gaz comprenant un élément semi-perméable
EP2071235A2 (fr) Brûleur à gaz pour appareils de cuisson
CN109185883B (zh) 内环火盖、燃烧器及燃气灶
EP1317642A1 (fr) Bruleur a gaz double empile
EP0534302A2 (fr) Brûleur à gaz pour la cuisson d'aliments
US3760790A (en) Gas fireplace unit
US10393386B2 (en) System of gas burners, in particular for a cooking top for household use
US7802567B2 (en) Device and method for a gas burner
CN109595603B (zh) 一种燃气灶具分火器
CN208764916U (zh) 一种燃烧器及燃气灶
MX2014007609A (es) Quemador para equipos de cocina.
KR101425387B1 (ko) 버너장치
CN217763411U (zh) 适用于多种气源的大功率燃气炉头和燃烧器
CN108180508A (zh) 一种单环火燃烧器
CN216868479U (zh) 燃烧器火盖及燃气灶具
US3635209A (en) Gas burner
US20230220992A1 (en) High Output Gas Burner, Such As For A Food Cooking Apparatus
CN216431815U (zh) 高度降低的功率增强型炉头
KR200337646Y1 (ko) 가열 용기 받침부재
CN110566966B (zh) 灶具火盖
CN223137878U (zh) 一种防堵塞炉头火盖及燃烧器
KR101181305B1 (ko) 가스렌지용 다중화염 버너어셈블리
CN222143137U (zh) 一种燃烧器及灶具

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE DE ES FR GB NL PT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE DE ES FR GB NL PT

17P Request for examination filed

Effective date: 19931207

D17P Request for examination filed (deleted)
R17P Request for examination filed (corrected)

Effective date: 19931207

17Q First examination report despatched

Effective date: 19950320

18D Application deemed to be withdrawn

Effective date: 19960402