EP3465005A1 - Brûleur à gaz et appareil de cuisson ménager - Google Patents

Brûleur à gaz et appareil de cuisson ménager

Info

Publication number
EP3465005A1
EP3465005A1 EP17731281.6A EP17731281A EP3465005A1 EP 3465005 A1 EP3465005 A1 EP 3465005A1 EP 17731281 A EP17731281 A EP 17731281A EP 3465005 A1 EP3465005 A1 EP 3465005A1
Authority
EP
European Patent Office
Prior art keywords
gas
primary air
burner
fuel gas
air inlet
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
EP17731281.6A
Other languages
German (de)
English (en)
Other versions
EP3465005B1 (fr
Inventor
Cesar Aguado Vela
Javier Corral Ricalde
Jose Salvador Ochoa Torres
Julio Rivera Peman
Cristina RUEDA SANUDO
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3465005A1 publication Critical patent/EP3465005A1/fr
Application granted granted Critical
Publication of EP3465005B1 publication Critical patent/EP3465005B1/fr
Active 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
    • F23D14/46—Details
    • 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
    • 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
    • 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
    • F23D14/48—Nozzles
    • 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
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • 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
    • F24C3/008—Ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/007—Mixing tubes, air supply regulation

Definitions

  • the present invention relates to a gas burner for a Marshsgar réelle and a Mullsgar réelle with such a gas burner.
  • Gas burners for household cooking appliances comprise a burner lower part, in the center of which a mixing chamber is provided, and a nozzle holder, which has a gas nozzle for injecting fuel gas into the mixing chamber. When injecting the fuel gas into the mixing chamber, primary air is sucked laterally between the gas nozzle and a lower edge of the mixing chamber and mixed with the fuel gas.
  • an object of the present invention is to provide an improved gas burner.
  • the gas burner comprises a burner housing having a mixing chamber for mixing fuel gas with primary air, and a gas nozzle accommodated in the burner housing for injecting the fuel gas into the mixing chamber, wherein between the gas nozzle and the mixing chamber, an annular first primary air inlet to
  • the gas nozzle has a second primary air inlet for sucking primary air through which the second primary air inlet tapers in a direction of flow of the primary air through the second primary air inlet at least once and widens again and wherein the gas nozzle has an annular fuel gas outlet opening , which opens directly into the second primary air inlet.
  • Fuel gas outlet completely around a center or symmetry axis of the gas burner rotates.
  • the fuel gas outlet opening is in particular slit-shaped. Including that the second primary air inlet in the flow direction of
  • Primary air inlet reduces in the flow direction. From the fact that the second primary air inlet expands in the direction of flow of the primary air, it is to be understood that a cross-sectional area of the second primary air inlet increases. That is, a diameter of the second primary air inlet increases in the flow direction.
  • the second primary air inlet thus has a throttle point or bottleneck, in front of which the second primary air inlet tapers and after which the second one
  • the primary air intake widens again. As a result, an acceleration of the primary air in the gas nozzle can be achieved.
  • the fuel gas is air
  • the gas nozzle injects the fuel gas in the particular downwardly open mixing chamber.
  • the primary air is sucked through the second primary air inlet through the gas nozzle and simultaneously sucked laterally past the gas nozzle through the first primary air inlet into the mixing chamber and mixed there with the fuel gas to a primary air / fuel gas mixture.
  • the secondary air in contrast, is the air required to burn the primary air / fuel gas mixture exiting the gas burner.
  • Primary air inlet opens can already be done in the gas nozzle mixing of the fuel gas with the primary air. Furthermore, it can be that two
  • Primary air intakes are provided, the amount of sucked primary air are increased. This allows the combustion of a larger amount of fuel gas.
  • the performance of the gas burner can be increased. Because the fuel gas and the primary air are already at least partially mixed in the gas nozzle, a height of the gas burner can be reduced in comparison to known gas burners. By better mixing of the primary air with the fuel gas, the efficiency of the gas burner is increased and pollutant emissions are reduced.
  • the gas burner can also be used as a household gas burner or
  • Household cooking appliance gas burner are called.
  • the fuel gas outlet opening breaks a
  • the fuel gas outlet opening opens laterally into the second
  • the gas nozzle has an annular
  • Fuel gas outlet tapers The fuel gas distribution channel is preferably formed rotationally symmetrical to the central axis of the gas burner. That is, the fuel gas distribution channel completely revolves around the central axis. Between the fuel gas outlet opening and the
  • Fuel gas distribution channel is provided a connecting channel, which may be curved, in particular arcuate, curved. Among the fact that the fuel gas distribution channel tapers in the direction of the fuel gas outlet opening, it is to be understood that a cross-sectional area of the fuel gas distribution channel is greater than a cross-sectional area of the fuel gas outlet opening.
  • the second primary air inlet has an inlet section tapering conically in the direction of flow of the primary air, an outlet section conically widening in the flow direction, which faces the mixing chamber, and a cylindrical intermediate section arranged between the inlet section and the outlet section.
  • the intermediate section preferably has a circular cross-sectional area. The intermediate portion forms a bottleneck or a throttle point of the second
  • the fuel gas outlet opening opens between the intermediate section and the outlet section in the second
  • the fuel gas outlet opens immediately after the
  • the gas nozzle is rotationally symmetrical to a central axis, wherein the second primary air inlet also
  • the gas nozzle has a formed of a metal material
  • the gas nozzle may be made of brass. In the base body and the fuel gas distribution channel is provided.
  • the burner housing comprises a
  • Burner bottom part which has the mixing chamber, and a nozzle holder connected to the burner lower part, in which the gas nozzle is accommodated.
  • the burner housing may have a burner cover placed on the burner lower part.
  • Nozzle holders can be designed, for example, as cast aluminum components. As a result, the gas burner can be inexpensively manufactured in large quantities.
  • the gas burner is mounted on a cover plate or on a so-called top sheet.
  • the cover plate can be arranged between the nozzle holder and the burner base.
  • the cover plate are all gas burners of the
  • Household cooking appliance assigned. That is, the McGsgar Meeting has only a cover plate on which all gas burners are mounted.
  • the nozzle holder has a fuel gas channel for supplying the fuel gas to the gas nozzle.
  • the nozzle holder may continue to be provided Brenngasverteilkanal into which the fuel gas channel opens.
  • the Brenngasverteilkanal may be annular and rotate around the second primary air inlet.
  • the fuel gas distribution channel of the nozzle holder can be in fluid communication with the fuel gas distribution channel of the gas nozzle via connection channels.
  • the second primary air inlet is at least partially formed in the nozzle holder.
  • a suction portion tapering conically in the flow direction of the primary air and a supply portion for supplying the primary air sucked by the suction portion to the gas nozzle may be provided.
  • the household cooking appliance has a plurality of such gas burners.
  • Each gas burner may be associated with a gas control valve or gas control valve.
  • the Swsgar réelle also has a common cover plate on which all gas burners are mounted.
  • the cover plate may for example be a glass ceramic plate.
  • the household cooking appliance can be a stand-alone appliance or a built-in appliance.
  • the Swsgar réelle is a household gas stove.
  • the household cooker may have four such gas burners.
  • the gas control valve is clamped to a main gas line of the Swsgar réelles and a
  • Gas supply fluidly connected to its associated gas burner.
  • each gas burner can also be assigned an ignition device which can be integrated in the gas control valve and an ignition element arranged directly on the gas burner, for example a spark plug.
  • Fig. 1 shows a schematic view of an embodiment of a
  • FIG. 2 shows a schematic sectional view of an embodiment of a
  • FIG. 3 shows a further schematic sectional view of the gas burner according to FIG. 2;
  • Fig. 4 shows a schematic perspective partial sectional view of a
  • FIG. 5 shows a schematic sectional view of the gas nozzle according to FIG. 4.
  • FIG. 1 shows a schematic view of an embodiment of a
  • the Swsgar réelle 1 is in particular a gas stove or household gas stove.
  • the Swsgar réelle 1 may be a built-in device or a standalone unit.
  • the Marshsgar réelle 1 includes a plurality of gas burner 2.
  • the number of gas burner 2 is arbitrary. For example, four gas burners 2 may be provided.
  • Each gas burner 2 is associated with a gas control valve or gas control valve 3, with the aid of which a respective gas burner 2 supplied fuel gas flow optionally switched on, off and, in particular stepless, can be controlled.
  • the gas burner 2 comprises a burner housing 4.
  • the burner housing 4 is preferably made of an aluminum or magnesium alloy.
  • the burner housing 4 comprises a burner lower part 5, which rests on a hob plate or cover plate 6.
  • Cover plate 6 may also be referred to as a top sheet.
  • the cover plate 6 is, for example, a metal plate or a gas-ceramic plate. All gas burners 2 of the
  • the burner base 5 is rotationally symmetrical to a center or symmetry axis M 2 of the gas burner 2 is formed.
  • a tubular mixing chamber 7 is provided in the middle of the burner base 5.
  • the mixing chamber 7 is also formed rotationally symmetrical to the central axis M 2 .
  • the mixing chamber 7 is adapted to fuel gas B, For example, natural gas to mix with fresh air or primary air L.
  • fuel gas B For example, natural gas to mix with fresh air or primary air L.
  • a burner cap 8 is placed on the upper side of the burner lower part 5.
  • a gas distribution chamber 9 for uniformly distributing a formed in the mixing chamber 7
  • Gas outlet openings 10 is arbitrary.
  • the gas outlet openings 10 are distributed uniformly around a circumference of the burner cover 8.
  • the burner cover 8 is also formed rotationally symmetrical to the central axis M 2 .
  • the mixing of the primary air L with the fuel gas B can be further improved. That is, in the mixing chamber 7, a premixing of the fuel gas B and the primary air L take place, and in the
  • the burner housing 4 further comprises a nozzle holder 11.
  • the nozzle holder 1 1 is arranged below the cover plate 6.
  • the cover plate 6 may be clamped between the burner base 5 and the nozzle holder 11.
  • a breakthrough may be provided in the cover plate 6.
  • the nozzle holder 1 1 has an annular mounting portion 12 which is fixedly connected to the burner lower part 5.
  • an external thread can be provided on the outside of the mixing chamber 7, which is screwed into a corresponding internal thread of the fastening section 12.
  • the nozzle holder 1 1 further comprises a nozzle receiving portion 13 which is integrally connected via a web portion 14 with the mounting portion 12.
  • the attachment portion 12, the nozzle receiving portion 13 and the land portion 14 are formed integrally with one another.
  • the gas burner 2 can be inexpensively manufactured in large quantities.
  • the nozzle holder 1 1 further includes a fuel gas passage 15 provided in the nozzle accommodating portion 13 for supplying the fuel gas B to a gas nozzle 16 of the gas burner 2. With the aid of the gas nozzle 16, the fuel gas B in the
  • an annular, circumferential first primary air inlet 17 is provided between the gas nozzle 16 and the mixing chamber 7.
  • the gas nozzle 16 is arranged at a distance from a lower edge 18 of the mixing chamber 7. That is, the gas nozzle 16 is completely positioned outside the mixing chamber 7.
  • the gas nozzle 16 thus causes a Venturi effect.
  • An embodiment of the gas nozzle 16 is shown in Figs. 4 and 5.
  • the gas nozzle 16 is also formed rotationally symmetrical to the central axis M 2 .
  • the gas nozzle 16 comprises a cylindrical base body 19, which preferably consists of a
  • the base body 19 may be made of brass.
  • the base body 19 has an optional chamfer 20 facing the lower edge 18 of the mixing chamber 7.
  • the chamfer 20 may include, for example, an angle of 45 ° with the central axis M 2 .
  • the chamfer 20 facilitates the flow of the primary air L past the gas nozzle 16 into the mixing chamber 7.
  • the gas nozzle 16 further comprises a second primary air inlet 21, which is guided through the same in the middle.
  • primary air L is likewise drawn in and supplied to the mixing chamber 7.
  • the second primary air inlet 21 is a bore provided centrally in the base body 19.
  • the second primary air inlet 21 tapers at least once in a flow direction R of the primary air L and subsequently widens again in the flow direction R.
  • the second primary air inlet 21 includes an inlet portion 22 tapering conically in the flow direction R of the primary air L, an outlet portion 23 tapering conically in the flow direction R facing the mixing chamber 7, and one between the inlet portion 22 and the outlet portion 23
  • the intermediate portion 24 is preferably cylindrical with a circular base surface.
  • the inlet portion 22, the outlet portion 23 and the intermediate portion 24 form an outer wall 25 of the second primary air inlet 21.
  • Primary air inlet 21 may, as shown in FIGS. 2 and 3, at least partially also be formed in the nozzle holder 11. For example, on the
  • Nozzle receiving portion 13 of the nozzle holder 11 a in the flow direction R of the primary air L tapered suction portion 26 is provided, which in a
  • cylindrical feed section 27 opens. With the help of the feed section 27, the primary air L of the gas nozzle 16 is supplied.
  • the feed section 27 is arranged between the inlet section 22 and the suction section 26.
  • the gas nozzle 16 also has an annular fuel gas outlet opening 28. Under annular is to be understood that the fuel gas outlet opening 28 completely rotates about the central axis M 2 .
  • the fuel gas outlet opening 28 is slot-shaped.
  • the fuel gas outlet opening 28 opens directly into the second primary air inlet 21. In this case, the fuel gas outlet opening 28 breaks through the outer wall 25 of the second primary air inlet 21.
  • the base body 19 of the gas nozzle 16 is also a completely around the central axis M 2 rotating and rotationally symmetrical to this trained annular fuel gas distribution channel 29 for uniformly distributing the fuel gas B is provided.
  • the fuel gas distribution channel 29 tapers in the direction of the fuel gas outlet opening 28. That is, the fuel gas distribution channel 29 has a larger cross-section than the fuel gas outlet opening 28.
  • an arcuate curved connecting channel 30 is provided between the fuel gas outlet opening 28 and the fuel gas distribution channel 29 .
  • the fuel gas outlet opening 28 opens into the second primary air inlet 21 immediately after the intermediate section 24 of the second primary air inlet 21.
  • the fuel gas outlet opening 28 opens between the
  • the combustion gas passage 15 provided in the nozzle accommodating portion 13 includes an annular shape around the feeding portion 27 and the Intake portion 26 encircling fuel gas distribution channel 31, by means of which the fuel gas distribution channel 29 of the gas nozzle 16, the fuel gas B is supplied.
  • a connecting channel or a plurality of connecting channels 32 may be provided in the nozzle receiving section 13.
  • the connecting channels 32 may be designed as bores.
  • the functionality of the gas burner 2 will be explained below.
  • this is supplied via the fuel gas channel 15 fuel gas B.
  • the fuel gas B flows annularly through the fuel gas outlet opening 28 into the second primary air inlet 21.
  • primary air L is sucked in via the suction section 26 into the gas nozzle 16 and in particular into the second primary air inlet 21. Due to the fact that the second primary air inlet 21 tapers in the flow direction R of the primary air L, the primary air L is accelerated and still at least partially mixes with the fuel gas B in the gas nozzle 16
  • premixed primary air / fuel gas mixture from the gas nozzle 16 is laterally sucked via the first primary air inlet 17 further primary air L into the mixing chamber 7.
  • a further mixing of the fuel gas B with the primary air L Due to the fact that two primary air inlets 17, 21 are provided, an increased amount of primary air L can be sucked in compared to known gas burners. As a result, a larger amount of fuel gas B burned and thus the performance of the gas burner 2 can be increased compared to known gas burners.
  • the premixing of the primary air L with the fuel gas B can already be done in the gas nozzle 16 in a very limited space. This allows the gas burner 2 in

Landscapes

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

Abstract

L'invention concerne un brûleur à gaz (2) pour un appareil de cuisson ménager (1), comprenant un corps de brûleur (4) qui comprend une chambre de mélange (7) pour mélanger du gaz de combustion (B) avec de l'air primaire (L), et une buse à gaz (16) logée dans le corps de brûleur (4) pour injecter le gaz de combustion (B) dans la chambre de mélange (7), une première entrée d'air primaire (17) annulaire pour aspirer l'air primaire (L) étant située entre la buse à gaz (16) et la chambre de mélange (7), la buse à gaz (16) comprenant une deuxième entrée d'air primaire (21) guidée à travers celle-ci pour aspirer l'air primaire (L), la deuxième entrée d'air primaire (21) se rétrécissant et s'élargissant à nouveau au moins une fois dans une direction d'écoulement (R) de l'air primaire (L) à travers la deuxième entrée d'air primaire (21), et la buse à gaz (16) comprenant une ouverture de sortie de gaz de combustion (28) annulaire qui débouche directement dans la deuxième entrée d'air primaire (21).
EP17731281.6A 2016-06-03 2017-05-12 Brûleur à gaz et appareil de cuisson ménager Active EP3465005B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201630747A ES2645299B1 (es) 2016-06-03 2016-06-03 Quemador de gas y aparato de cocción doméstico
PCT/IB2017/052788 WO2017208095A1 (fr) 2016-06-03 2017-05-12 Brûleur à gaz et appareil de cuisson ménager

Publications (2)

Publication Number Publication Date
EP3465005A1 true EP3465005A1 (fr) 2019-04-10
EP3465005B1 EP3465005B1 (fr) 2020-03-11

Family

ID=59078116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17731281.6A Active EP3465005B1 (fr) 2016-06-03 2017-05-12 Brûleur à gaz et appareil de cuisson ménager

Country Status (5)

Country Link
US (1) US11543122B2 (fr)
EP (1) EP3465005B1 (fr)
CN (1) CN109154437B (fr)
ES (1) ES2645299B1 (fr)
WO (1) WO2017208095A1 (fr)

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CN107429916B (zh) * 2015-03-11 2020-08-07 特勒P工程有限公司 家用燃气预混合的通风炉架
ES2584918B1 (es) * 2015-03-31 2017-07-11 Bsh Electrodomésticos España, S.A. Quemador de gas y campo de cocción a gas

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US20200378597A1 (en) 2020-12-03
ES2645299A1 (es) 2017-12-04
CN109154437A (zh) 2019-01-04
US11543122B2 (en) 2023-01-03
EP3465005B1 (fr) 2020-03-11
CN109154437B (zh) 2020-09-01
ES2645299B1 (es) 2018-09-12
WO2017208095A1 (fr) 2017-12-07

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