EP1459012B1 - Gas burner with several flame sectors - Google Patents
Gas burner with several flame sectors Download PDFInfo
- Publication number
- EP1459012B1 EP1459012B1 EP02801909A EP02801909A EP1459012B1 EP 1459012 B1 EP1459012 B1 EP 1459012B1 EP 02801909 A EP02801909 A EP 02801909A EP 02801909 A EP02801909 A EP 02801909A EP 1459012 B1 EP1459012 B1 EP 1459012B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flame
- burner
- hob
- slits
- sectors
- 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
Links
- 238000010411 cooking Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/08—Arrangement or mounting of burners
- F24C3/085—Arrangement or mounting of burners on ranges
-
- 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
- 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
- This invention relates to a gas burner with several flame sectors.
- Gas burners for food cooking comprising a burner body fed via a nozzle by a gas flow which entrains a flow of primary air and mixes therewith to form a mixture which when suitably ignited generates a ring of radial flames adjustable in size by a tap positioned upstream of the nozzle.
- double ring In addition to traditional burners comprising one flame ring, so-called “double ring”, “triple ring” and double burners are also commercially available. These latter comprise two flame rings controllable separately by one or two feed taps.
- This type of burner has been available for some time, but recently it has been sought to limit its dimensions to enable it to be also used in built-in cooking hobs having a height of about 30 mm, in addition to its use in free-standing cookers.
- Burners of this type generally draw their primary and secondary air from above the cooking utensil so that normal burner operation is not interrupted by possible air movements which may take place within the interior of the cooking appliance, caused for example by the opening of a door in a furniture unit positioned below the cooking hob or by the presence of the oven situated under said hob.
- the document WO9911975-A relates to a burner of small dimensions and hence suitable for mounting in built-in hobs, which comprises three flame rings and uses primary and secondary air taken from above the cooking hob.
- the air-gas mixture is created by a radial venturi of very low height, and is distributed within the two flame rings via four horizontally disposed radial conduits.
- the flames are distributed over two or at most three flame rings which are hence directed mostly towards the outside rather than the inside of the base of the pan.
- a drawback of these burners consists of the fact that, as the third ring is provided on a fairly large diameter and as it is directed towards the outside of the cooking utensil, the resultant cooking is not uniform over the entire pan.
- An object of the invention is to eliminate this drawback by providing a flame burner with four or more flames having excellent flame distribution below the pan to hence obtain high cooking efficiency while at the same time maintaining the now well consolidated dimensioning and operating principle.
- the burner of the invention comprises a cup piece 2 provided lowerly with a conduit 4 feeding an injector 6. At its upper edge, the cup piece comprises an annular flange 8 for its fixing to the sheet metal 10 of the cooking hob. On the cup 2 there rests a flame divider element, indicated overall by 12 and consisting of two parts, namely the venturi tube 14 and the hollow body 16, these being joined together by connection elements 18.
- the venturi tube 14 comprises, for its support and centering on the cup piece 2, a flange 20 rigid with a frusto-conical tube piece 22 facing the injector 6 and from which there extent four equiangular radial webs 24 which with the hob 10 and annular flange 8 form radial channels 26 for entry of the primary air.
- the hollow body 16 presents a circular central portion 28 from which four radial webs 30 extend to form elements by which two annular chambers 32, 34 respectively are joined together.
- the outer annular chamber 34 comprises along its outer edge a first ring 36 of flame slits and along its inner edge a second ring 38 of flame slits 38. Said ring is closed upperly by an annular cap 40.
- the inner annular chamber 32 comprises along its outer edge a third ring 40 of flame slits and along its inner edge a fourth ring 42 of flame slits.
- the fourth flame ring 42 is formed as four sectors 44, with the flame slits of each sector disposed parallel to each other.
- the annular chamber 32 is closed upperly by an annular cap 46.
- the flame divider 12 forms channels 56 for the passage of secondary air to the second 38, third 40 and fourth 42 flame ring.
- the central portion 28 comprises on its surface an annular rim 58 in which flame slits 60 are provided.
- the central body also presents a hole 62 feeding a venturi nozzle 64 faced by a closure plate 66.
- This embodiment with five flame rings presents the further advantage that the flame is directed into a very localized central region.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
Description
- This invention relates to a gas burner with several flame sectors.
- Gas burners for food cooking are known, comprising a burner body fed via a nozzle by a gas flow which entrains a flow of primary air and mixes therewith to form a mixture which when suitably ignited generates a ring of radial flames adjustable in size by a tap positioned upstream of the nozzle.
- In addition to traditional burners comprising one flame ring, so-called "double ring", "triple ring" and double burners are also commercially available. These latter comprise two flame rings controllable separately by one or two feed taps.
- This type of burner has been available for some time, but recently it has been sought to limit its dimensions to enable it to be also used in built-in cooking hobs having a height of about 30 mm, in addition to its use in free-standing cookers.
- Burners of this type generally draw their primary and secondary air from above the cooking utensil so that normal burner operation is not interrupted by possible air movements which may take place within the interior of the cooking appliance, caused for example by the opening of a door in a furniture unit positioned below the cooking hob or by the presence of the oven situated under said hob.
- The document
WO9911975-A - In this burner, as in similar commercially available burners, the flames are distributed over two or at most three flame rings which are hence directed mostly towards the outside rather than the inside of the base of the pan.
- A drawback of these burners consists of the fact that, as the third ring is provided on a fairly large diameter and as it is directed towards the outside of the cooking utensil, the resultant cooking is not uniform over the entire pan.
- An object of the invention is to eliminate this drawback by providing a flame burner with four or more flames having excellent flame distribution below the pan to hence obtain high cooking efficiency while at the same time maintaining the now well consolidated dimensioning and operating principle.
- This and further objects which will be apparent from the ensuing description are attained according to the invention by a gas burner with several flame sectors for cooking appliances as described in claim 1.
- A preferred embodiment of this invention and a variant thereof are described in detail hereinafter with reference to the accompanying drawings, in which:
-
Figure 1 is a plan view of a burner according to the invention, -
Figure 2 is a section through the burner on the line II-II ofFigure 1 , -
Figure 3 is a plan view of the venturi tube, -
Figure 4 is a section therethrough on the line IV-IV ofFigure 3 , -
Figure 5 is a plan view of the hollow body, -
Figure 6 is a plan view of a different embodiment of the burner, and -
Figure 7 is a longitudinal section therethrough on the line VI-VI ofFigure 6 . - As can be seen from the figures, the burner of the invention comprises a
cup piece 2 provided lowerly with aconduit 4 feeding aninjector 6. At its upper edge, the cup piece comprises anannular flange 8 for its fixing to thesheet metal 10 of the cooking hob. On thecup 2 there rests a flame divider element, indicated overall by 12 and consisting of two parts, namely theventuri tube 14 and thehollow body 16, these being joined together byconnection elements 18. - The
venturi tube 14 comprises, for its support and centering on thecup piece 2, aflange 20 rigid with a frusto-conical tube piece 22 facing theinjector 6 and from which there extent four equiangularradial webs 24 which with thehob 10 andannular flange 8 formradial channels 26 for entry of the primary air. - The
hollow body 16 presents a circularcentral portion 28 from which fourradial webs 30 extend to form elements by which twoannular chambers - The outer
annular chamber 34 comprises along its outer edge afirst ring 36 of flame slits and along its inner edge asecond ring 38 offlame slits 38. Said ring is closed upperly by anannular cap 40. The innerannular chamber 32 comprises along its outer edge athird ring 40 of flame slits and along its inner edge afourth ring 42 of flame slits. Thefourth flame ring 42 is formed as foursectors 44, with the flame slits of each sector disposed parallel to each other. - The
annular chamber 32 is closed upperly by anannular cap 46. - With the upper edge of the
tube piece 22 thecentral portion 28 forms amixing chamber 48 from which there radially extend fourconduits 50 which: - convey the air-gas mixture via
apertures 52 to theannular chamber 32 which feeds theflame rings - convey the air-gas mixture via
apertures 54 to theannular chamber 34 which feeds theflame rings - With the
hob 10 andannular flange 8 theflame divider 12forms channels 56 for the passage of secondary air to the second 38, third 40 and fourth 42 flame ring. - From the aforegoing it is apparent that the burner of the invention presents numerous advantages, and in particular:
- it presents excellent flame distribution in that the most inner ring directs its flames towards the central part of the pan,
- it enables primary air and secondary air to be taken from above the hob,
- it is of low height because of the radial configuration of the venturi tube.
- In the embodiment shown in
Figures 6 and 7 , thecentral portion 28 comprises on its surface anannular rim 58 in whichflame slits 60 are provided. - The central body also presents a
hole 62 feeding aventuri nozzle 64 faced by aclosure plate 66. - This embodiment with five flame rings presents the further advantage that the flame is directed into a very localized central region.
Claims (5)
- A gas burner with several flame sectors for cooking appliances, comprising:- a cup (2) provided with an annular flange for its fixing to the cooking hob and provided with only one injector (6) which forms a gas mixture with primary air coming from the external area of the hob (10),- a flame divider (12) superposed on said cup and comprising a radial venturi consisting in a frustoconical tube (22) facing said injector, and in a horizontal radial potion, formed from an upper portion (43) of said conical tube (22), and a lower face of the central portion (28) facing said frustoconical tube,- two concentric annular chambers (32, 34) connected to said venturi, each chamber being provided along its outer and inner edges with flame slits forming mutually concentric flame rings (36, 38, 41, 42),- caps (40, 46) closing said annular chambers (32,34),- channels (56) formed by the flame divider (12) and the hob (10) for the passage of secondary air to said flame slits.
- A burner as claimed in claim 1, characterised by comprising radial channels (50) presenting apertures (52) which connect them to the annular chamber (32), and in the walls of which there are provided the flame slits of the third (41) and fourth (42) flame rings.
- A burner as claimed in claim 1, characterised in that the fourth flame ring (41) is formed in four sectors (44).
- A burner as claimed in claim 3, characterised in that the flame slits of each sector (44) are mutually parallel.
- A burner as claimed in claim 1, characterised in that the flame divider presents a central body (28) comprising a rim in which fifth flame slits (60) are provided and further comprising a hole (62) feeding a venturi nozzle (64).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2001VE000043A ITVE20010043A1 (en) | 2001-10-24 | 2001-10-24 | GAS BURNER WITH SEVERAL FLAME SECTORS |
ITVE20010043 | 2001-10-24 | ||
PCT/EP2002/011846 WO2003036168A1 (en) | 2001-10-24 | 2002-10-23 | Gas burner with several flame sectors |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1459012A1 EP1459012A1 (en) | 2004-09-22 |
EP1459012B1 true EP1459012B1 (en) | 2009-08-05 |
Family
ID=11461090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02801909A Expired - Lifetime EP1459012B1 (en) | 2001-10-24 | 2002-10-23 | Gas burner with several flame sectors |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1459012B1 (en) |
AT (1) | ATE438830T1 (en) |
DE (1) | DE60233259D1 (en) |
IT (1) | ITVE20010043A1 (en) |
WO (1) | WO2003036168A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2701432C2 (en) * | 2015-03-10 | 2019-09-26 | Дефенди Итали С.Р.Л. | Improved gas burner |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITPS20030016A1 (en) * | 2003-04-18 | 2004-10-19 | So M I Press Societa Metalli I Niettati Spa | BURNER FOR GAS STOVES, OF THE PERFECT TYPE. |
ITMI20030829A1 (en) * | 2003-04-18 | 2004-10-19 | Smeg Spa | GAS STOVE AND HOB. |
ITUD20030137A1 (en) * | 2003-06-23 | 2004-12-24 | Sami Srl | TRIPLE CROWN BURNER. |
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 |
WO2007007298A2 (en) * | 2005-07-14 | 2007-01-18 | Enkay Bek Metal Enjeksiyon Sanayi Ticaret Limited Sirkei | A gas burner |
US7661954B2 (en) * | 2005-09-13 | 2010-02-16 | Uwe Harneit | Gas burner |
CN102889620B (en) * | 2011-07-21 | 2016-08-10 | 林内株式会社 | Gas furnace |
PL2986913T3 (en) * | 2013-04-17 | 2019-07-31 | Sabaf S.P.A. | Gas burner for cooking hobs |
ES2567352B1 (en) * | 2014-10-21 | 2017-02-13 | BSH Electrodomésticos España S.A. | Gas cooking point and cooking plate |
CA2934675A1 (en) | 2015-07-02 | 2017-01-02 | Mabe, S.A. De C.V. | Multi burner ovni |
CN105402780B (en) * | 2015-12-28 | 2017-08-11 | 浙江博立灶具科技有限公司 | Cook a meal and use gas big kitchen range |
CN105782980B (en) * | 2016-05-10 | 2018-01-16 | 广东星立方厨房科技有限公司 | The distributor seat and cooker burner of a kind of burner |
US10393371B2 (en) | 2016-12-30 | 2019-08-27 | Whirlpool Corporation | Gas burner |
CN108036314A (en) * | 2017-12-29 | 2018-05-15 | 华帝股份有限公司 | Special structure combustor of giving vent to anger |
CN109595603B (en) * | 2018-12-18 | 2023-12-29 | 成都前锋电子有限责任公司 | Distributor for gas cooker |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2405431A1 (en) * | 1977-10-10 | 1979-05-04 | Martinez Antoine | Gas burner for cooker - has two concentric rings at different levels with radial slots to allow flow of gas |
GB2197063B (en) * | 1986-10-29 | 1990-08-22 | Chin Shin Chang | Gas burner |
ES2107401T3 (en) * | 1996-03-19 | 2000-02-01 | Sabaf Spa | GAS BURNER FOR KITCHEN DEVICES. |
EP1025392B1 (en) * | 1997-08-28 | 2003-09-10 | Aktiebolaget Electrolux | A gas hotplate burner |
US5842849A (en) * | 1997-09-05 | 1998-12-01 | Huang; Hsu-Sheng | Gas burner |
US6132205A (en) * | 2000-01-06 | 2000-10-17 | Harneit; Uwe | Multi-ring sealed gas burner |
-
2001
- 2001-10-24 IT IT2001VE000043A patent/ITVE20010043A1/en unknown
-
2002
- 2002-10-23 WO PCT/EP2002/011846 patent/WO2003036168A1/en not_active Application Discontinuation
- 2002-10-23 EP EP02801909A patent/EP1459012B1/en not_active Expired - Lifetime
- 2002-10-23 DE DE60233259T patent/DE60233259D1/en not_active Expired - Lifetime
- 2002-10-23 AT AT02801909T patent/ATE438830T1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2701432C2 (en) * | 2015-03-10 | 2019-09-26 | Дефенди Итали С.Р.Л. | Improved gas burner |
Also Published As
Publication number | Publication date |
---|---|
DE60233259D1 (en) | 2009-09-17 |
WO2003036168A1 (en) | 2003-05-01 |
ITVE20010043A1 (en) | 2003-04-24 |
ATE438830T1 (en) | 2009-08-15 |
EP1459012A1 (en) | 2004-09-22 |
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