EP1162404A2 - Gasbrenner mit ringförmiger Flamme - Google Patents

Gasbrenner mit ringförmiger Flamme Download PDF

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Publication number
EP1162404A2
EP1162404A2 EP01106681A EP01106681A EP1162404A2 EP 1162404 A2 EP1162404 A2 EP 1162404A2 EP 01106681 A EP01106681 A EP 01106681A EP 01106681 A EP01106681 A EP 01106681A EP 1162404 A2 EP1162404 A2 EP 1162404A2
Authority
EP
European Patent Office
Prior art keywords
burner
gas
base portion
head
conduit
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Withdrawn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
EP01106681A
Other languages
English (en)
French (fr)
Other versions
EP1162404A3 (de
Inventor
Marco Whirlpool Europe s.r.l. Poma
Marco Whirlpool Europe s.r.l. Maritan
Alessandra Whirlpool Europe s.r.l. Gagliardi
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 Corp
Original Assignee
Whirlpool Corp
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 Whirlpool Corp filed Critical Whirlpool Corp
Publication of EP1162404A2 publication Critical patent/EP1162404A2/de
Publication of EP1162404A3 publication Critical patent/EP1162404A3/de
Withdrawn legal-status Critical Current

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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
    • 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
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F23D14/583—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits

Definitions

  • the present invention relates to a gas burner in accordance with the introduction to the main claim.
  • Known gas burners comprise a burner body associated with a conduit from which a previously obtained gas/air mixture emerges.
  • the said conduit terminal part of a vertically or horizontally extending venturi tube
  • This latter comprises a piece which connects to the tube and on which there is positioned a diffuser presenting a plurality of slits disposed along a lateral surface. On activating the burner, a plurality of mutually separate flames emerge from these slits.
  • the burners of the state of the art comprise a plurality of parts presenting considerable complexity, this negatively affecting their cost.
  • the known burners have a relatively large height above the cooking hob, which necessitates the use in their vicinity of supports, likewise of relatively large dimensions, for the cooking utensils (pans); all this detracts from the appearance of the cooking hob.
  • An object of the present invention is to provide a burner which is improved relative to known burners.
  • a further object is to provide a burner which has a low height above its support member, for example above the surface of a cooking hob; this can also result in the provision of cooking hobs formed in such a manner as not to require grids for supporting pans above the burner.
  • a further object is to provide a burner which can be easily cleaned, and results in low carbon monoxide and nitrogen oxide emission.
  • a burner according to the invention is indicated overall by 1 and is associated with a cooking hob 2 having an upper surface 3 and a lower surface 4. Below the surface 4 there is present for the gas a conduit G carrying an injector J ( Figures 4, 5) and with which there is associated a usual venturi tube 5 which can lie horizontally ( Figure 4) or vertically ( Figure 5) or otherwise.
  • the tube 5 (and the gas conduit in general) opens at its end 5A at 6 on the surface 3 of the hob 2.
  • the burner 1 is present in a position corresponding with the opening 6.
  • This burner comprises a burner body 8 having a base portion (or simply base) 9 and a one-piece head 10.
  • the burner head 10 is positioned on the base 9 and lies vertically at a short distance from it by virtue of support feet 12 associated with said head.
  • the support feet 12 can be associated with the base 9.
  • an expansion chamber 15 into which there flows the gas/air mixture originating from the venturi tube 5 and created by entrainment of atmospheric air into this tube by the gas originating from the main.
  • the burner base 9 and head 10 define within the burner body 8 an annular gap 16 provided laterally to this latter and presenting an inclination which can vary between horizontal and vertical.
  • the gap 16 communicates with the expansion chamber 15.
  • a substantially uninterrupted annular flame 17 forms at said gap when the burner is activated, said flame thus appearing along the peripheral edge of the burner body 8.
  • the flame can also appear along an inner peripheral edge of the burner body 8 along another gap communicating with the chamber 15.
  • the burner head 10 is substantially of flanged inverted cup shape, comprising a central portion 21 and a peripheral flange 22 positioned below the portion 21. This portion is hollow and is superposed on the opening 6 of the venturi tube 5.
  • the lower face 22A of the flange 22 is inclined to the surface 3 of the hob 2 and faces, at a distance therefrom, a corresponding face 25A of an edge 25 of the burner base 9.
  • This latter comprises a frusto-conical central part 26 surrounding that terminal part 5A of the venturi tube 5 projecting from the hob 2.
  • the burner head 10 has a very small height above the surface 3 of the cooking hob 2, enabling this latter to comprise integrated supports of various shapes (defining the usual "grid") for a food preparation utensil or pan. These supports are shown in Figure 3 where they are indicated by 27.
  • Usual flame generation and control members can be associated with the burner of the invention.
  • a spark generator 30 can be associated with the base 9 together with a usual thermocouple 31 to maintain gas feed to the burner in known manner after the flame 17 has been activated.
  • the gas/combustion air mixture can be adjusted by modifying the dimension (aperture) of the gap 16 by changing the distance between the burner head 10 and base 9.
  • This can be achieved by moving the head relative to the base; for example (see Figure 1), with the base 9 there can be associated supports 33 movable parallel to the terminal part 5A of the venturi tube 5 and arranged to cooperate with the feet 12 of the head 10.
  • the supports 33 are associated with rods 34 movable parallel to the axis K and cooperating with cams 35 provided on a rotary member 36 parallel to the surface 4 of the hob 2 and positioned below it.
  • This member 36 is mounted on a rotary shaft 37 driven by a motor 38 the operation of which is controlled by a pushbutton 39 mounted in a suitable position on the hob 2.
  • Rotation of the shaft 37 about its axis results in rotation of the member 36 and hence possible cooperation between the cams 35 and the rods 34 which raise the supports 33 from the burner base 9, to hence cause the head 10 to rise from the base 9. This results in modification of the width of the gap 16.
  • the cams 35 can also be provided directly on the burner base 9 in a predetermined position to hence allow pre-adjustment of the width of the gap 16 prior to the use of the burner 1.
  • the head 10 presents a lower annular part 43 resting on the burner base 9 and provided with a plurality of longitudinally or transversely (with respect to the head 10) extending slots.
  • the slots are equidistant and the gas/air mixture emerges from them. As these slots are spaced from the peripheral edge of the burner body 8, igniting the mixture results in the generation of a continuous annular flame about the burner 1.
  • the burner of the invention having a continuous single flame, and being provided with a diffuser with slots or cavities for flame stabilization, producers a flame front of laminar type which in its turn generates a noise which is lower than that generated by known burners.
  • the said burner has a very pleasing appearance and can be easily cleaned; because of its small height any pans placed on it are extremely stable.
  • burner base 9 associated with a cooking hob (or other support surface or member).
  • said base can be integrated into the cooking hob (which therefore comprises a region in which the occupying end 5A of the tube 5 is shaped as said base) or can be "virtual" in the sense of being that region (even completely flat, coplanar with the surface 6) of the cooking hob into which the tube opens and on which the burner head 10 is rested.
  • a flame of continuous annular shape is generated.
EP01106681A 2000-06-09 2001-03-16 Gasbrenner mit ringförmiger Flamme Withdrawn EP1162404A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI001302 2000-06-09
IT2000MI001302A IT1317784B1 (it) 2000-06-09 2000-06-09 Bruciatore a gas generante una fiamma anulare

Publications (2)

Publication Number Publication Date
EP1162404A2 true EP1162404A2 (de) 2001-12-12
EP1162404A3 EP1162404A3 (de) 2002-08-21

Family

ID=11445235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01106681A Withdrawn EP1162404A3 (de) 2000-06-09 2001-03-16 Gasbrenner mit ringförmiger Flamme

Country Status (2)

Country Link
EP (1) EP1162404A3 (de)
IT (1) IT1317784B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6589046B2 (en) * 2001-08-21 2003-07-08 Uwe Harneit Gas burner for outdoor cooking
ITTO20110126A1 (it) * 2011-02-14 2012-08-15 Indesit Co Spa Bruciatore di gas, in particolare per un apparecchio di cottura ad uso domestico
ITMI20111471A1 (it) * 2011-08-01 2013-02-02 Smeg Spa Bruciatore a gas per un piano di cottura e piano di cottura comprendente tale bruciatore a gas

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2179951A (en) * 1938-05-14 1939-11-14 Petersen George Gas stove burner
FR1313704A (fr) * 1957-10-24 1963-01-04 Liotard Metallurg Brûleur pour appareil de chauffage
GB1560087A (en) * 1976-10-29 1980-01-30 Ruhrgas Ag Burner for gas cookers
US4891006A (en) * 1987-09-08 1990-01-02 Sourdillon-Airindex Pilot flame gas burners and burner cap for these improved burners
GB2224824A (en) * 1988-11-04 1990-05-16 Parkinson Cowan Appliances Ltd Gas burners
WO1996006304A1 (en) * 1994-08-24 1996-02-29 University Of Leeds Innovations Ltd. A burner for gas cookers and hobs
DE29805620U1 (de) * 1998-03-27 1998-05-14 Schott Glas Kochmulde mit einem Gasbrenner
DE19751008C1 (de) * 1997-11-18 1999-04-22 Metallwaren Heidersdorf Gmbh Gasbrenner für Kochstellen mit Primärluftvormischung
US6135764A (en) * 1998-04-09 2000-10-24 Kwiatek; David J. Ribbon port burner for gas range

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2179951A (en) * 1938-05-14 1939-11-14 Petersen George Gas stove burner
FR1313704A (fr) * 1957-10-24 1963-01-04 Liotard Metallurg Brûleur pour appareil de chauffage
GB1560087A (en) * 1976-10-29 1980-01-30 Ruhrgas Ag Burner for gas cookers
US4891006A (en) * 1987-09-08 1990-01-02 Sourdillon-Airindex Pilot flame gas burners and burner cap for these improved burners
GB2224824A (en) * 1988-11-04 1990-05-16 Parkinson Cowan Appliances Ltd Gas burners
WO1996006304A1 (en) * 1994-08-24 1996-02-29 University Of Leeds Innovations Ltd. A burner for gas cookers and hobs
DE19751008C1 (de) * 1997-11-18 1999-04-22 Metallwaren Heidersdorf Gmbh Gasbrenner für Kochstellen mit Primärluftvormischung
DE29805620U1 (de) * 1998-03-27 1998-05-14 Schott Glas Kochmulde mit einem Gasbrenner
US6135764A (en) * 1998-04-09 2000-10-24 Kwiatek; David J. Ribbon port burner for gas range

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6589046B2 (en) * 2001-08-21 2003-07-08 Uwe Harneit Gas burner for outdoor cooking
ITTO20110126A1 (it) * 2011-02-14 2012-08-15 Indesit Co Spa Bruciatore di gas, in particolare per un apparecchio di cottura ad uso domestico
EP2487413A1 (de) * 2011-02-14 2012-08-15 Indesit Company, S.p.A. Gasbrenner, insesondere für ein Haushaltsgargerät
ITMI20111471A1 (it) * 2011-08-01 2013-02-02 Smeg Spa Bruciatore a gas per un piano di cottura e piano di cottura comprendente tale bruciatore a gas

Also Published As

Publication number Publication date
ITMI20001302A0 (it) 2000-06-09
EP1162404A3 (de) 2002-08-21
ITMI20001302A1 (it) 2001-12-09
IT1317784B1 (it) 2003-07-15

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