EP1910742A1 - Gasbrenner mit mehreren konzentrischen flammenringen - Google Patents

Gasbrenner mit mehreren konzentrischen flammenringen

Info

Publication number
EP1910742A1
EP1910742A1 EP06794239A EP06794239A EP1910742A1 EP 1910742 A1 EP1910742 A1 EP 1910742A1 EP 06794239 A EP06794239 A EP 06794239A EP 06794239 A EP06794239 A EP 06794239A EP 1910742 A1 EP1910742 A1 EP 1910742A1
Authority
EP
European Patent Office
Prior art keywords
central
pot
gas
head
burner
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.)
Granted
Application number
EP06794239A
Other languages
English (en)
French (fr)
Other versions
EP1910742B1 (de
Inventor
Christophe c/o Burner Systems Int. TROCHOU (BSI)
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.)
Nouvelle Sourdillon Ste
Original Assignee
Burner Systems International BSI SA
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 Burner Systems International BSI SA filed Critical Burner Systems International BSI SA
Publication of EP1910742A1 publication Critical patent/EP1910742A1/de
Application granted granted Critical
Publication of EP1910742B1 publication Critical patent/EP1910742B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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 invention relates to the field of gas burners with multiple rings of concentric flames, and more specifically relates to improvements to those burners which comprise:
  • annular outer burner coaxially surrounding said central burner and provided with at least one annular ring of flame orifices, gas injection means for the annular outer burner, and convergent-divergent means forming a venturi interposed between the means gas injection and annular ring of flame ports, and
  • the object of the invention is to propose a gas burner of this type which is more energy-efficient, that is to say more powerful in terms of dimensions. substantially identical, while being structurally simple and easy to manufacture and assemble.
  • a gas burner having a plurality of concentric flame crowns as mentioned in the preamble is characterized, being arranged according to the invention,
  • gas injection means for the annular outer burner comprise a plurality of gas injectors arranged substantially radially around the central axial gas injector
  • the convergent-divergent means comprise at least two substantially radial convergent-divergent ducts forming tubular venturis of respective substantially radial expanses and opening into the annular outer burner, said ducts extending substantially coaxially respectively to said radial injectors.
  • a first mounting possibility consists in that said gas supply means comprise a single pipe located centrally and connected to all the injectors: the burner is then provided with a single gas supply comprising a single control (single valve) supplying simultaneously the central burner and the annular outer burner.
  • said gas supply means comprise a first pipe connected to the central axial gas injector and a second tubing connected to the lateral gas injectors: each of the. central burner and annular outer burner has its own gas supply with its own control (two respective faucets), so that it is possible to achieve a differentiated heating in the center and the periphery (kitchen WOK).
  • the burner comprises a central base disposed coaxially with the central burner and in that this base comprises. a substantially coaxial central bore opening upwards and adapted to receive the aforesaid axial central gas injector, and at least two substantially radial lateral bores laterally opening being adapted to respectively receive the at least two lateral gas injectors arranged substantially radially.
  • the base in the case of a common supply of the two annular central and outer burners, it is expected that the at least two substantially radial lateral bores of the base are in communication with the central bore and that the base further comprises a connecting bore in communication with the lower end of the central bore and adapted to receive the end of a gas supply tube ; in the case of two separate power supplies, it is expected that the base comprises a first connecting bore in communication with the central bore and adapted to receive the end of a first gas supply tube and a second connecting bore in communication with said lateral bores and adapted to receive the end of a second gas supply tube.
  • the convergent-divergent tubular ducts forming venturis are inclined upwardly towards the outside.
  • the base is, at least in its upper part, of generally frustoconical general shape with a conicity such that the lateral gas injectors are inclined substantially coaxial respectively to convergent-divergent ducts forming tubular venturis .
  • these convergent-divergent ducts forming tubular venturis are angularly distributed substantially equidistantly.
  • these convergent-divergent ducts forming tubular venturis are in number between 2 and 5, and preferably in the number of three mutually angularly spaced apart by about 120 °.
  • the annular outer burner comprises two annular rings of respectively internal and external flame orifices.
  • the convergent-divergent means forming venturis interposed between the central injector and the central ring of flame orifices comprise a radial annular divergent surrounding a central well coaxial with the central injector, so that, in conjunction with the convergent-divergent tubular radial extension of supply of the annular outer burner, it is possible to achieve a gas burner with multiple rings of concentric flames that is relatively low height.
  • a gas burner arranged as just exposed can have a power of the order of 7 kW by maintaining approximately the transverse dimensions of a current burner with a power of the order of 5 kW.
  • Another advantage of the burner arranged according to the invention lies in the possibility of maintaining a structural conformation similar to that of the previous burners with a limited number of constituent parts, such a burner comprising:
  • a lower component or pot adapted to be fixed to a top plate of a cooking apparatus substantially coaxially with an opening of said top plate
  • an upper component or head comprising a central part delimited peripherally by an indented lateral wall defining flame openings to form the aforesaid central ring of flames and an annular portion substantially coaxial with said central portion and delimited by at least one notched side wall; defining flame openings to form the aforesaid annular ring of flames,
  • the burner arranged according to the invention is characterized in that
  • the pot comprises a central zone arranged to support centrally the axial injector and the radial injectors, and at least the pot and / or the head comprises at least two radiating gutters that extend from said central area or respectively said central part where they are open and up to the outer edge of the pot or respectively to the part annular with which they communicate, said gutters being closed respectively by the head or the pot in the assembly position of said pot and head to form the aforesaid convergent-divergent ducts forming tubular venturis of substantially radial extent.
  • the pot comprises at least two radiating gutters which extend from said central zone and which are open respectively upwards,
  • the head comprises at least two radiating gutters which extend from said central part and which are respectively open downwards, and
  • the design of the pot can, for its part, give rise to two possible embodiments according to the general design of the cooking appliance.
  • a first design consists in that the pot has a solid structure and in that at least the pot and / or the head comprises at least two substantially radial grooves, interposed between said gutters, which extend outlets between said beach central and the outer edge of the pot or respectively of the head, these grooves being closed respectively by the head or the pot in the assembly position of said pot and head to form passages of generally radial extent adapted to ensure the supply of primary air from above the top plate of the cooking appliance.
  • the pot comprises at least two substantially radial grooves, which are interposed between the said gutters and which open substantially upwards,
  • the head comprises at least two substantially radial grooves, which are interposed between the said gutters and which open substantially downwards,
  • the pot has a structure which is perforated at least partially between the gutters and which is adapted to provide primary air supply from below the top plate of the cooking appliance.
  • the gutters of the pot extend as far below the annular portion of the head and the annular portion of the head has a bottom which is provided with openings facing the ends located radially outwards of said gutters of the pot. .
  • the central range of the pot has a central opening through which said support base of the injectors is engaged by the underside of the pot, with its upper frustoconical portion projecting above said central range and with its lower part underlying the pot, said lower part being provided with the connection bore or bores.
  • the pot and / or the head has pairs of projecting fingers arranged on both sides. other respective gutters and adapted to receive the corresponding gutters of respectively the head and / or the pot.
  • the pot and / or the head comprises three substantially radial gutters mutually angularly spaced apart by about 120 ° and three substantially radial grooves interposed between said gutters.
  • FIG. 1 is an overall view, in side perspective, of a possible embodiment of a gas burner multiple rings of flame arranged in accordance with the invention
  • FIG. 1 is a diametrical sectional view of the burner of Figure 1;
  • FIG. 3 is a sectional view of a first embodiment of a burner part of Figures 1 and 2;
  • - Figure 4 is an exploded view, in perspective from above, of the burner of Figures 1 and 2;
  • - Figure 5 is an exploded view, in perspective from below, of the burner of Figures 1 and 2;
  • FIGS. 6A, 6B and 6C illustrate a second embodiment of the burner part shown in FIG. 3, respectively in plan view and in sectional views along the lines B-B and C-C of FIG. 6A;
  • FIG. 7 illustrates an alternative embodiment of the pot of the burner according to the invention shown in a representation similar to that of the pot appearing in Figure 4, but with a different angular orientation.
  • a concentric flame crown gas burner generally designated 1, to which the invention relates, essentially comprises two nested elementary gas burners, one of which is the other, namely a central burner 2 and an annular outer burner 3 coaxially surrounding said central burner 2.
  • the central burner 2 comprises:
  • the annular outer burner 3 coaxially surrounding said central burner 2 comprises:
  • annular outer burner body 8 having at least one annular ring of internal and / or external flame orifices 9 (in FIGS. 1 to 5, it is provided two crowns of flame respectively inner 9i and outer 9e),
  • - gas injection means 10 which comprise a plurality of gas injectors 11 arranged substantially radially around the central axial gas injector 6, and
  • Convergent-divergent means 12 forming a venturi interposed between the gas injection means 10 and the annular ring of flame orifices 9, which convergent-divergent means 12 comprise at least two substantially radial convergent-divergent ducts 13 forming tubular venturis respective substantially radial extents and opening into the annular outer burner body 8, said convergent-divergent ducts 13 extending substantially coaxially respectively to said radial injectors 11.
  • the burner 1 comprises means 14 for supplying gas to said axial central injector 6 and to said injection means 10, means 14 for supplying gas, which will be more explicitly discussed now.
  • a first mounting possibility consists in that said gas supply means comprise a single pipe located substantially centrally and connected to all the injectors: the burner is then provided with a single gas supply having a single control (single valve) simultaneously feeding the central burner and the annular outer burner.
  • said gas supply means comprise a first pipe connected to the central axial gas injector and a second pipe connected to the lateral gas injectors: each of the central burner and the annular outer burner has its own gas supply with its own control (two respective taps), so that it is possible to achieve a differentiated heating in the center and on the periphery (kitchen WOK).
  • the gas supply means 14 comprise a central base 16 disposed coaxially with the central burner 2 and arranged to support all the gas injectors in their respective appropriate situations.
  • this base 14 comprises, as visible in FIG. 3 and FIGS. 6A to 6C:
  • At least two lateral bores 18 substantially radial laterally opening being adapted to respectively receive the at least two lateral gas injectors 11 arranged substantially radially.
  • the base 16 it is then possible to arrange the base 16 according to the type of gas supply retained.
  • a common supply of the two central burners 2 and annular outer 3 it is provided, as shown in Figure 3, that all the substantially radial side bores 18 are in communication with the central bore 15 and that the base 16 further comprises a connecting bore 17 in communication with the lower end of the central bore 15 and adapted to receive the end of a gas supply tube (not shown).
  • the two burners central 2 and annular outer 3 are then controlled simultaneously from a single tap (not shown).
  • Another possibility of arranging the base 16 will be exposed later with reference to FIGS. 6A to 6C.
  • the base 16 is shown in FIG. 3 in two section planes angularly offset, so that its upper part is cut in the axis of a lateral bore 18 and that its lower part is cut in the axis of the bore 17 for connecting a gas supply tube.
  • a single injector 11 is shown in position on the base 16, while the other injector is not mounted and shows the bore 18 corresponding.
  • the convergent-divergent ducts 13 forming tubular venturis are inclined upwardly towards the outside as can be seen in FIG. 2.
  • Each duct 13 is then substantially rectilinear.
  • the base 16 is, at least in its upper part, of generally frustoconical general shape with a conicity such that the lateral gas injectors 11 are inclined substantially coaxially respectively convergent-divergent conduits 13 forming tubular venturis.
  • the convergent-divergent ducts 13 reach under the annular burner body 8, which has a bottom 19 which is provided with openings 20 corresponding to the ends of the ducts for the passage of the air / gas mixture.
  • the convergent-divergent ducts 13 forming tubular venturis are angularly distributed substantially equidistantly.
  • easy design and manufacture of the burner are obtained when the convergent-divergent ducts 13 forming tubular venturis are in number between 2 and 5.
  • An interesting compromise is that the convergent-divergent ducts 13 are in number. three mutually angularly spaced apart by about 120 °, as illustrated in the figures.
  • the operation of the annular outer burner 3 and the operation of the central burner 2 remain substantially independent of each other, since each of them has its own power supply means. air-gas mixture.
  • the central burner 2 can be arranged in any desired manner appropriate to the needs.
  • the convergent-diverging means 7 forming venturis interposed between the central injector 6 and the central flame ring 5 to comprise a radial annular divergent defined by a plateau. 21 inclined downward towards the outside and surrounding a central well 22 coaxial with the central injector 6 and by a facing face 24 of a cap 23 covering the central burner body 4, as can be seen in FIG. 2 .
  • the burner according to the invention retains a simple structure, being consisting of a minimum number of component parts. From this point of view, it is interesting that it can be constituted in a manner similar to the burner described in document PCT / FR04 / 00158 already cited. For this purpose, it is expected that the burner described above comprises, as best seen in Figures 3, 4 and 5:
  • a bottom component or pot 25 adapted to be attached to a top plate 26 of a cooking apparatus substantially coaxially with an opening 27 provided in said top plate 26;
  • an upper constituent part or head 27 comprising: a central part forming the aforesaid central burner body 4 delimited peripherally by a side wall 28 indented at 29 to define, in conjunction with the aforesaid central cap 23, flame openings constituting together the said central ring of flames 5, and an annular portion substantially coaxial with said central portion and forming said annular outer burner body 8, said annular portion being bounded by at least one notched side wall 31 defining, in conjunction with a cap annular 32, flame openings together constituting the aforesaid annular ring of flames 9 (in the example shown, the annular portion is delimited by two respectively inner and outer 30I and 30e respectively indented side walls 3Ii and 31e defining, in conjunction with the annular cap 32, the openings of fl constituting respectively the two ring rings of flames 9i and 9e; the aforesaid central cap 23 of substantially discoidal shape adapted to cover said central part, and
  • annular cap 32 adapted to cap said annular portion.
  • the pot 25 comprises a central zone 33 arranged to support centrally the axial injector 6 and the radial injectors 11, and
  • At least the pot 25 and / or the head 27 comprises at least two radiating gutters 34 which extend from said central area 33 or respectively said central portion forming central burner body 4 where they are open and up to the edge outside the pot 25 or respectively up to the annular portion forming annular burner body 8 with which they communicate, said gutters 34 being closed respectively by the head 27 or the pot 25 in the assembly position of said pot and head to form the aforesaid convergent-divergent conduits 13 forming tubular venturis of substantially radial extent.
  • the pot 25 comprises at least two radii gutters 34i which extend from said central zone 33 and which are open respectively upwards,
  • the head 27 comprises at least two radii 34s which extend from said central portion 4 and which are respectively open downwards, and the gutters 34i of the pot and the gutters 34s of the head are superimposed in pairs, in the assembly position of said pot and head, to form the aforesaid convergent-divergent conduits 13 forming tubular venturis of substantially radial extent.
  • a first embodiment consists, as shown in Figures 1, 2, 4 and 5, in that the pot has a solid structure and in that:
  • At least the pot 25 and / or the head 27 comprises at least two substantially radial grooves 35, interposed between the aforesaid gutters 34, which extend outwardly between said central area 33 and the outer edge of the pot 25 or respectively of the head 27, these grooves 35 being closed respectively by the head 27 or the pot 25 in the assembly position of said pot and head to form passages 36 of generally radial extent adapted to ensure the supply of primary air from above from the top plate 26 of the cooking apparatus.
  • a burner is thus formed in which the primary air necessary for the operation of the two annular central and external burners 3, respectively, is fed from the top of the top plate of the cooking appliance.
  • the pot 25 comprises at least two grooves 35i substantially radial, which are interposed between said gutters 34i and which open substantially upwards,
  • the head 27 comprises at least two substantially radial grooves 35s, which are interposed between said gutters 34s and which open substantially downwards, and
  • a second design consists, as illustrated in FIG. 7 (on which the same numerical references are retained to designate elements or parts identical to those corresponding to FIG. 4), in that the pot 25 has a structure which is perforated at 41 at least partially between the gutters 34i. This structure is adapted to supply the primary air supply of the two central burners 2 and annular outer 3 from the bottom of the top plate of the cooking appliance.
  • gutters 34i pot 25 extend to below the annular portion of the head 27 and the annular portion of the head 27 has its bottom 19 which is provided said openings 20 opposite radially outward ends of said gutters 34i pot 25.
  • the central range 33 of the pot 25 has, as can be seen in FIG. 2, a central opening 37 through which said base 16 for supporting the injectors is engaged from below the pot 25, with its frustoconical upper part projecting above said central zone 33 and with its lower part underlying the pot, said lower part being provided with said bore 17 adapted to receive the end of a feed tube some gas.
  • the pot 25 and / or the head 27 comprises three grooves respectively 34i, 34s that are substantially radial and mutually angularly spaced apart by about 120 ° and three grooves respectively 35i, 35s substantially radials interposed between the aforesaid gutters.
  • rotation guiding and locking means which, in the example illustrated, comprise pairs of fingers 38 carried for example by the pot 25 and protruding vertically upwards, being arranged on either side of the respective gutters 34i.
  • the gutters 34s are interposed each between two fingers 38 vis-à-vis.
  • an opposite arrangement could be adopted, with the projecting fingers carried by the head on both sides of the gutters 34s.
  • an electric ignition electrode 39 and / or a thermocouple 40 for detecting the presence of flames can, if desired, be installed in the burner 1 at any appropriate location. of it; for example, the ignition electrode 39 and the thermocouple 40 are shown at the outer edge of the pot 25 in Figure 5, while they are shown centrally in the pot 25 and at different locations from that in Figures 2 and 4.
  • the base 16 has a first connecting bore 17 in communication with the bore central 15 and adapted to receive the end of a first gas supply tube (not shown) and a second connecting bore 44 in communication with said lateral bores 18 and adapted to receive the end of a second tube gas supply (not shown).
  • the central axial bore 15 receiving the axial central injector 6 of the central burner 2 is connected by a channel 42 laterally offset to the connecting bore 17 which here is located laterally to the base of the base 16 and is of non-radial extent.
  • the bores 18 of the radial injectors 11 of the annular outer burner 3 are connected by a channel 43 located axially to a second connecting bore 44 which, here too, is located laterally to the base of the base 16 and is of substantially radial extent.
  • the base 16 is a relatively complex piece, with many holes opening, some of which must then be closed (plugs 45) to form the appropriate channels.
EP06794239.1A 2005-07-29 2006-07-27 Gasbrenner mit mehreren konzentrischen flammenringen Not-in-force EP1910742B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0508166A FR2889293B1 (fr) 2005-07-29 2005-07-29 Bruleur a gaz a multiples couronnes de flammes concentriques
PCT/FR2006/001844 WO2007012766A1 (fr) 2005-07-29 2006-07-27 Bruleur a gaz a multiples couronnes de flammes concentriques

Publications (2)

Publication Number Publication Date
EP1910742A1 true EP1910742A1 (de) 2008-04-16
EP1910742B1 EP1910742B1 (de) 2017-09-06

Family

ID=36218267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06794239.1A Not-in-force EP1910742B1 (de) 2005-07-29 2006-07-27 Gasbrenner mit mehreren konzentrischen flammenringen

Country Status (6)

Country Link
US (1) US7901205B2 (de)
EP (1) EP1910742B1 (de)
CA (1) CA2616133C (de)
ES (1) ES2649751T3 (de)
FR (1) FR2889293B1 (de)
WO (1) WO2007012766A1 (de)

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Also Published As

Publication number Publication date
FR2889293A1 (fr) 2007-02-02
WO2007012766A1 (fr) 2007-02-01
US7901205B2 (en) 2011-03-08
FR2889293B1 (fr) 2009-12-18
US20080206697A1 (en) 2008-08-28
CA2616133A1 (fr) 2007-02-01
ES2649751T3 (es) 2018-01-15
EP1910742B1 (de) 2017-09-06
CA2616133C (fr) 2014-09-09

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