EP2390569B1 - Brenner für professionelle oder Haushaltsgaskocher, insbesondere von Typ der Brenner mit vertikaler Flamme zum Kochen mit Woks und dergleichen - Google Patents

Brenner für professionelle oder Haushaltsgaskocher, insbesondere von Typ der Brenner mit vertikaler Flamme zum Kochen mit Woks und dergleichen Download PDF

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Publication number
EP2390569B1
EP2390569B1 EP11165553.6A EP11165553A EP2390569B1 EP 2390569 B1 EP2390569 B1 EP 2390569B1 EP 11165553 A EP11165553 A EP 11165553A EP 2390569 B1 EP2390569 B1 EP 2390569B1
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EP
European Patent Office
Prior art keywords
orifices
burner
gas
central axis
flame
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Application number
EP11165553.6A
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English (en)
French (fr)
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EP2390569A3 (de
EP2390569A2 (de
Inventor
Loris Gasparini
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Arc Srl
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Arc Srl
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Priority to PL11165553T priority Critical patent/PL2390569T3/pl
Priority to SI201131658T priority patent/SI2390569T1/sl
Publication of EP2390569A2 publication Critical patent/EP2390569A2/de
Publication of EP2390569A3 publication Critical patent/EP2390569A3/de
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Publication of EP2390569B1 publication Critical patent/EP2390569B1/de
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    • 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
    • F23D14/08—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 axial outlets at the burner head
    • F23D14/085—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 axial 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
    • F23D14/48—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 burner for professional or domestic gas cookers, particularly of the type of vertical-flame burners adapted for cooking with woks and the like.
  • pans In order to be used correctly, these pans need their lower central point, where the food to be cooked collects, to be directly lapped by the flame.
  • Radial flame burners are not suitable for this purpose, because they involve the formation of one or more crowns of rays of flame extending from substantially horizontal orifices and the absence of nozzles adapted to form a central flame, in accordance with the widespread need to use flat-bottomed pans in European and Western cuisine in general.
  • burners are known that are fitted with burner caps that have a series of central orifices, which extend substantially vertically and are adapted to form a plurality of rays of flame that are gathered centrally in the burner.
  • these burners have a chamber, below the burner cap, which is fed by a Venturi-type tube into which the gas is injected and into which oxidizing air, known as primary air, is sucked by the Venturi effect.
  • the gas mixed with the primary air needs to be further mixed with oxidizing air, known as secondary air.
  • This mixing occurs at the ejection from the orifices of the burner cap, but, owing to the density of the rays of flame and the high outflow of gas necessary to generate the thermal power required, the mixing with secondary air is inefficient and leads to a scant efficiency of combustion, and it also induces the noisy phenomenon of flame detachment, i.e. of the formation of the flame in a detached position above the orifice supplying the mixture of gas and primary air.
  • burners which have an annular body in which a tubular chamber is defined that has a series of slits facing towards the central axis of the body.
  • the gas, mixed with the primary air is injected by means of a Venturi-type tube tangentially into the tubular chamber, from which it exits through the suitably positioned slits inclined towards the center of the burner body where, mixing vortically with the secondary air sucked in through the central opening delimited by the annular body of the burner, it burns effectively, forming a flame that rises centrally from the burner.
  • This type of burner however has the drawback of producing a flame that is highly concentrated in its center, and thus it is adapted to perform types of cooking that involve the use of pans of greater thickness, which are capable of diffusing the heat with a good level of uniformity throughout the portion of the bottom thereof which is in contact with the dish to be cooked.
  • US2006147865 discloses a burner assembly comprising a substantially annular two-piece burner head having a base and a top. Gas-emitting orifices in the burner are directed inwardly and upwardly, but not outwardly. A restrictor plate controls the flow of secondary air through the burner assembly.
  • US2006147865 discloses a burner for gas cookers according to the preamble of claim 1.
  • US2008050687 discloses a gas burner with a burner seat having therein a path for provision of gas, a burner core rested on an inner periphery defining the path and having multiple slits defined through opposite sides of the burner core and a burner cap placed on top of the burner seat to sandwich the burner core.
  • the slits are defined in such a manner that an air flow inside the burner core is rotated and directed upward relative to the burner core.
  • the aim of the present invention is to provide a burner that makes it possible to meet this need, by enabling the formation of a central flame which is obtained by means of an efficient burning of the combustible gas.
  • an object of the invention is to provide a burner that makes it possible to prevent the phenomenon of flame detachment.
  • Another object of the invention is to provide a burner that makes it possible to present an ample heating region in order to enable the effective heating of a greater portion of the pan compared to that which can be effectively heated by the burners known today.
  • Another object of the invention is to provide a burner that, thanks to the stability of its flame, makes it possible to modulate the thermal power dispensed commensurately to the level useful to obtaining the correct cooking of the foodstuffs to be cooked.
  • a further object of the invention is to provide a burner that is structurally simple and easy to use, and which can be produced at relatively low cost.
  • the reference numeral 10 generally indicates a burner for professional or domestic gas cookers, particularly of the type of vertical-flame burners adapted for cooking with woks and the like, which has a distinctive characteristic in that it comprises
  • the Venturi-type tube 14 defines, for the gas, an inflow direction B, in the chamber 12, which is substantially tangential to the central axis A.
  • the upper outflow ports 15 comprise orifices 18a and 18b which are arranged substantially circumferentially to the central axis A and peripherally to the body 11.
  • the orifices 18a and 18b comprise first orifices 18a and second orifices 18b provided at different radial distances from the central axis A, the first orifices 18a, with respect to the second orifices 18b, being offset circumferentially around the central axis A.
  • the upper outflow ports 15 conveniently also comprise an annular opening 19 that is peripheral to the body 11.
  • the central outflow ports 17 are preferably slot-shaped and distributed substantially uniformly on a wall 20 of the body 11 that is substantially frustum-shaped and diverges upward, during use, and is substantially coaxial to the central axis A, which it faces.
  • the central outflow ports 17 furthermore advantageously extend substantially along planes D which are tangent to a cylindrical surface E which has a selected radius and is coaxial to the central axis A, as illustrated for the purposes of non-limiting example in Figure 3 .
  • This vortical motion F generates a fluid-dynamic vacuum effect at the central space 21 delimited by the body 11.
  • the body 11 comprises
  • the orifices 18a and 18b conveniently open onto the annular portion 26, which has a peripheral circular flap 27 that is adjacent to the orifices 18a and 18b, for resting in a contoured seat 28 provided at the edge 29 of the collar 24.
  • the flap 27 and the edge 29 conveniently define the annular opening 19, below the flap 27 slits 30 being also provided for communication between the chamber 12 and the annular opening 19 to feed the gas thereto so as to form, in use, a curtain of pilot flame for igniting the gas that flows out of the orifices 18a and 18b.
  • the curtain of pilot flame develops in the direction of the central axis A, i.e. vertically, and ensures the effective burning of the gas mixed with the primary air that exits through the orifices 18a and 18b, thus enabling a prompt ignition thereof at the opening of the orifices, so as to prevent the phenomenon of flame detachment.
  • the invention fully achieves the intended aim and objects by providing a burner that makes it possible to form a central flame that is obtained by means of an efficient burning of the combustible gas, thanks to the combined effect of the draft due to burning and the draft due to the fluid-dynamic vacuum effect induced by the vortical nature of the curtains of flame formed, in use, by the central outflow ports.
  • a burner according to the invention makes it possible to prevent the phenomenon of flame detachment, particularly of the vertical flames which burn the gas flowing out from the orifices, partly thanks to the burn-assist effect generated, at the orifices, by the presence of the curtain of pilot flame, which in use is lit adjacent thereto.
  • a burner according to the invention makes it possible to present an ample heating region in order to enable the effective heating of a larger portion of the pan compared to that which can be effectively heated by the burners known today, this heating region being obtained from the combination of the curtains of flame emanating from the central outflow ports, with the rays of flame emanating from the orifices that are perimetric to the burner body.
  • a burner according to the invention is also structurally simple, easy to use, and can be made at relatively low cost.
  • a burner according to the invention makes it possible to obtain a high level of thermal power thanks to the combination of the two types of flame obtained, namely
  • the stability of the flames that can be obtained using a burner according to the invention allows the modulation thereof, for example by modulation means which are known per se and which are not shown or described here, the burners used today for cooking with woks being in contrast substantially incapable of allowing the modulation of the thermal power produced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Claims (8)

  1. Ein Brenner für professionelle oder Haushaltsgaskocher, insbesondere vom Typ von Brennern mit vertikaler Flamme zum Kochen mit Woks und dergleichen, der Folgendes umfasst:
    - einen Brennerkörper (11), der im Wesentlichen ringförmig ist und eine rohrförmige Kammer (12) einschließt, die in einer im Wesentlichen spiralförmigen Anordnung um eine Zentralachse (A) liegt und mit einer Zugangsöffnung (13) versehen ist,
    - eine Venturi-Zuführdüse (14), die mit dem Körper (11) verbunden ist und sich zu der Öffnung (13) hin öffnet, um das Verbrennungsgas der Kammer (12) zuzuführen,
    wobei der Körper (11) ausgestattet ist mit
    - oberen Auslassöffnungen (15) für das Gas, die sich zu der Seite (16) des Körpers (11) hin öffnen, die im Gebrauch die obere ist, und ausgebildet sind, um eine Flamme zu bilden, die im Wesentlichen entlang der Zentralachse (A) ausgerichtet ist,
    - zentrale Auslassöffnungen (17) für das Gas, die sich zu dem Körper (11), im Wesentlichen zu der Zentralachse (A) hin, öffnen,
    - dadurch gekennzeichnet, dass die oberen Auslassöffnungen (15) eine Ringöffnung (19) umfassen, die peripher zu dem Körper (11) ist.
  2. Der Brenner gemäß Anspruch 1, dadurch gekennzeichnet, dass die Venturidüse (14) eine Einströmrichtung (B) für das Gas in die Kammer (12) bestimmt, die im Wesentlichen tangential zu der Zentralachse (A) ist.
  3. Der Brenner gemäß einem oder mehreren der obigen Ansprüche, dadurch gekennzeichnet, dass die oberen Auslassöffnungen (15) Löcher (18a, 18b) umfassen, die im Wesentlichen im Umfangsrichtung zu der Zentralachse (A) und peripher zu dem Körper (11) angeordnet sind.
  4. Der Brenner gemäß Anspruch 3, dadurch gekennzeichnet, dass die Löcher (18a, 18b) erste Löcher (18a) und zweite Löcher (18b) umfassen, die in verschiedenen radialen Abständen angebracht sind, wobei die ersten Löcher (18a) von den zweiten Löchern (18b) in Umfangsrichtung um die Zentralachse (A) herum versetzt sind.
  5. Der Brenner gemäß einem oder mehreren der obigen Ansprüche, dadurch gekennzeichnet, dass die zentralen Auslassöffnungen (17) schlitzförmig und im Wesentlichen einheitlich an einer Wand (20) des Körpers (11) verteilt sind, die im Wesentlichen kegelstumpfförmig ist und sich im Gebrauch nach oben verzweigt und im Wesentlichen koaxial mit der Zentralachse (A) ist, der sie zugewandt ist.
  6. Der Brenner gemäß Anspruch 5, dadurch gekennzeichnet, dass die zentralen Auslassöffnungen (17) im Wesentlichen auf Ebenen (D) liegen, die tangential zu einer zylindrischen Oberfläche (E) sind, welche einen ausgewählten Radius hat und koaxial mit der Zentralachse (A) ist.
  7. Der Brenner gemäß einem oder mehreren der obigen Ansprüche, dadurch gekennzeichnet, dass der Körper (11) Folgendes umfasst:
    - eine Basis (22), die einen Boden (23), der wie eine Wendelrampe geformt ist, und einen Umfangsbund (24) umfasst,
    - einen Deckel (25), der einen ringförmigen Teil (26) und die Wand (20) umfasst und ausgebildet ist, um komplementär mit der Basis (22) zusammengefügt zu werden.
  8. Der Brenner gemäß Anspruch 7, dadurch gekennzeichnet, dass die Löcher (18a, 18b) sich zu dem ringförmigen Teil (26) hin öffnen, der eine periphere kreisrunde Klappe (27) hat, welche an die Löcher (18a, 18b) angrenzt, zum Ruhen in einem konturierten Sitz (28), der an dem Rand (29) des Bundes (24) angebracht ist, wobei die Klappe (27) und der Rand (29) die Ringöffnung (19) bilden, wobei weiter unterhalb der Klappe (27) Schlitze (30) für die Verbindung zwischen der Kammer (12) und der Ringöffnung (19) angebracht sind, um dort das Gas zuzuführen, um eine Vorhang einer Zündflamme zu bilden, um das Gas zu entzünden, das aus den Löchern (18a, 18b) austritt.
EP11165553.6A 2010-05-24 2011-05-10 Brenner für professionelle oder Haushaltsgaskocher, insbesondere von Typ der Brenner mit vertikaler Flamme zum Kochen mit Woks und dergleichen Active EP2390569B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL11165553T PL2390569T3 (pl) 2010-05-24 2011-05-10 Palnik do profesjonalnych lub domowych kuchenek gazowych, zwłaszcza w rodzaju palników z pionowym płomieniem, dostosowany do gotowania w wokach i temu podobnych
SI201131658T SI2390569T1 (sl) 2010-05-24 2011-05-10 Gorilnik za profesionalne ali domače plinske kuhalnike, še zlasti vrste gorilnikov z vertikalnim plamenom, ki so prilagojeni za kuhanje z voki in podobnim

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPD2010A000159A IT1400135B1 (it) 2010-05-24 2010-05-24 Bruciatore per cucine a gas professionali o domestiche, particolarmente del tipo dei bruciatori a fiamma verticale adatti alla cucina tramite pentole wok e simili.

Publications (3)

Publication Number Publication Date
EP2390569A2 EP2390569A2 (de) 2011-11-30
EP2390569A3 EP2390569A3 (de) 2017-10-18
EP2390569B1 true EP2390569B1 (de) 2018-10-24

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EP11165553.6A Active EP2390569B1 (de) 2010-05-24 2011-05-10 Brenner für professionelle oder Haushaltsgaskocher, insbesondere von Typ der Brenner mit vertikaler Flamme zum Kochen mit Woks und dergleichen

Country Status (6)

Country Link
EP (1) EP2390569B1 (de)
ES (1) ES2706910T3 (de)
IT (1) IT1400135B1 (de)
PL (1) PL2390569T3 (de)
SI (1) SI2390569T1 (de)
TR (1) TR201900391T4 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013105874A1 (de) * 2013-06-06 2014-12-11 Isofrost Gmbh Gasbrenneranordnung
USD812415S1 (en) * 2016-02-10 2018-03-13 Wolf Appliance, Inc. Wok burner assembly integrated with a gas cooktop
US10281157B2 (en) 2016-02-10 2019-05-07 Wolf Appliance, Inc. Gas cooktop with integrated wok
KR101740576B1 (ko) * 2016-06-20 2017-05-26 (주)대신전기산업 가스버너
CN109652199B (zh) * 2019-02-28 2022-05-13 湖南银华百隆现代农业发展有限公司 一种浓香菜籽油的加工方法
CN110360565B (zh) * 2019-07-07 2020-10-27 宁波方太厨具有限公司 一种分体式火盖及应用有该火盖的燃烧器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060147865A1 (en) * 2005-01-05 2006-07-06 Charles Czajka Cooking range burner head assembly
US20080050687A1 (en) * 2006-08-25 2008-02-28 Tsen-Tung Wu Gas burner assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ITPD20100159A1 (it) 2011-11-25
SI2390569T1 (sl) 2019-02-28
TR201900391T4 (tr) 2019-02-21
ES2706910T3 (es) 2019-04-01
EP2390569A3 (de) 2017-10-18
PL2390569T3 (pl) 2019-04-30
EP2390569A2 (de) 2011-11-30
IT1400135B1 (it) 2013-05-17

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