EP2211095B1 - Brûleur à gaz - Google Patents

Brûleur à gaz Download PDF

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Publication number
EP2211095B1
EP2211095B1 EP10150937.0A EP10150937A EP2211095B1 EP 2211095 B1 EP2211095 B1 EP 2211095B1 EP 10150937 A EP10150937 A EP 10150937A EP 2211095 B1 EP2211095 B1 EP 2211095B1
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EP
European Patent Office
Prior art keywords
burner
gas
secondary air
gas distribution
distribution chamber
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.)
Active
Application number
EP10150937.0A
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German (de)
English (en)
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EP2211095A2 (fr
EP2211095A3 (fr
Inventor
Christophe Cadeau
Jörn Naumann
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
Priority to EP10150937.0A priority Critical patent/EP2211095B1/fr
Publication of EP2211095A2 publication Critical patent/EP2211095A2/fr
Publication of EP2211095A3 publication Critical patent/EP2211095A3/fr
Application granted granted Critical
Publication of EP2211095B1 publication Critical patent/EP2211095B1/fr
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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
    • 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 invention relates to a gas burner with a burner lower part, in which an upwardly open lower gas distribution space is formed, with a loosely placed on the burner lower burner upper part, which partially closes the lower gas distribution space, which comprises a burner ring, in which an upper gas distribution space is formed comprises and which has at least one gas passage opening corresponding to the lower gas distribution space and connecting the lower gas distribution space to the upper gas distribution space.
  • Gas burners of the type mentioned are used in gas cooking zones, for example in gas hobs, which are installed in a kitchen worktop, or in free standing gas stoves.
  • the gas burner is attached to a usually made of steel, glass ceramic or hard glass hob plate, also called “top sheet” attached.
  • the burner base is inserted from below into an opening of the hob plate and is fixed to the hob plate so that it protrudes upward from the hob plate.
  • the burner top is placed on top of the burner base, where it can be removed and replaced without the aid of tools.
  • the gas burner comprises at least one nozzle-injector unit arranged below the hob plate, with which primary air is admixed with the gas flowing to the gas burner and thus a gas-air mixture is formed. Behind the nozzle-injector unit, the gas-air mixture flows into the lower gas distribution space, in which the gas-air mixture is distributed as evenly as possible.
  • the lower gas distribution space is located in the burner lower part and is formed in this open at the top.
  • the upper burner part placed on top of the burner limits the lower gas distribution chamber upwards and seals the lower gas distribution chamber to the outside.
  • An upper gas distribution space formed in the burner top is connected to the lower gas distribution space so that the gas-air mixture can flow from the lower gas distribution space to the upper gas distribution space.
  • At least on the outer circumference of the burner ring are located from the upper gas distribution space outgoing gas outlet openings at which burns a gas flame during operation of the gas burner. Secondary air, which is required for complete combustion of the gas-air mixture, passes from the outside to the burning on the outer circumference of the burner ring gas flames.
  • Additional gas outlet openings which also branch off from the upper gas distribution chamber of the burner ring, may be located in the region of the inner circumference of the burner ring.
  • the gas flames burning at these gas outlet openings are directed inwards in the direction of the center of the burner ring.
  • further gas outlet openings can be located on an internal burner, which is arranged as a separate component in the middle of the burner ring.
  • the gas-air mixture of this internal burner can be supplied via the same nozzle-injector unit and the same lower gas distribution chamber, which also supplies the upper gas distribution chamber of the burner ring.
  • it is also known to supply the internal burner by means of a separate nozzle-injector unit with gas-air mixture. In this case, the gas supply of the internal burner can be controlled independently of the gas supply of the burner ring.
  • the gas flames burning on the inner circumference of the burner ring and the gas flames burning on the inner burner must also be supplied with secondary air in order to achieve complete combustion of the gas-air mixture.
  • the secondary air can be supplied radially from the outside to the inner region in the middle of the burner ring.
  • a component with radial and vertical bores which is placed on the burner base, the horizontal holes of the secondary air supply to the interior of the burner are used and the vertical holes overflow of gas-air mixture from the lower gas distribution space into the upper gas distribution space.
  • This through-threaded component is expensive to manufacture.
  • both the secondary air when flowing through the radial bores and the gas-air mixture when flowing through the vertical holes must overcome a significant flow resistance.
  • the gas burner consists of a lower part and a top part and a lid.
  • radial grooves are introduced, which alternate in one embodiment with recesses over the circumference of the lower part.
  • the grooves are used to supply the gas-air mixture to an annular burner chamber in the upper part and the recesses serve to supply primary air into the distribution chamber, in which the gas supply is introduced.
  • the grooves and depressions are incorporated into the otherwise solid base.
  • the depressions in the lower part can also be replaced by perforations, whereby primary air can be sucked from below the lower part.
  • Other passages are in the lower part not provided.
  • corresponding recesses and grooves are provided, which form passages with the recesses and grooves of the lower part.
  • a disadvantage of this gas burner is the complex structure of the upper part.
  • a gas burner which comprises a shell base and a torch body which can be placed thereon. Between the shell base and the burner body, a flow body is placed on the shell base, on which in turn a distributor plate is placed.
  • the shell base directs primary air to the center and passes through a central channel into the flow body, from where the air-gas mixture is directed to an annular combustion chamber in the burner body and into a central combustion chamber.
  • a secondary air supply is to be made via openings in the top of the burner body, which are provided between the flame rings of the annular combustion chamber.
  • this gas burner has at least the disadvantage that its structure is complex.
  • the present invention has for its object to provide a particularly simple designed gas burner, which ensures a particularly reliable supply of the interior of the burner with secondary air.
  • the burner lower part has at least one radial secondary air passage for supplying secondary air into an inner region of the gas burner.
  • the supply of secondary air into the interior is thus carried out at the level of the burner base, and not, as in the prior art, above the burner base.
  • the burner lower part has at least one secondary air passage through which the secondary air can flow from outside to inside.
  • "Radial" in this context means that the flow direction of the secondary air flowing through the secondary air passage has at least one radial component; It can therefore be horizontal in the radial direction, but also directed obliquely upwards.
  • the interior of the gas burner is according to the invention surrounded by the burner ring, wherein the lower gas distribution space has a central region and at least two radially extending outwardly from the central region outer regions, and wherein the outer regions are interconnected via the central region.
  • the lower gas distribution space in the burner lower part is defined by a single component and on an outer side of the burner lower part, between in each case two outer regions of the lower gas distribution space, the radial secondary air passage is formed.
  • the burner upper part has at least one secondary air passage opening, which in the interior of the gas burner connecting existing space with the radial secondary air passage, wherein the burner upper part has a burner ring receiving, which rests on the burner lower part and in which the gas passage openings and the secondary air passage openings are formed, wherein the burner ring receiving a plane, not interrupted and a contour of the lower gas distribution space following sealing surface for support an upper side of the burner lower part, and wherein the upper side of the burner lower part likewise forms a plane, uninterrupted sealing surface.
  • the burner upper part has at least one secondary air passage opening, which connects a space present in the interior region of the gas burner, in particular in the middle of the burner ring, to the radial secondary air passage.
  • the secondary air passage opening represents the vertical connection between the secondary air passage and the interior of the gas burner, in which the flames of the internal burner and optionally the inwardly directed flames of the burner ring are located.
  • the lower gas distribution space is defined in the burner lower part by a single component. This allows a particularly simple production of the burner lower part, since it limits the lower gas distribution space downwards and to the side. By using a one-piece component no screwing or gluing operations are required in the manufacture of the burner base.
  • the lower gas distribution space has a central area and at least two, preferably three, outer areas extending outwardly from the central area.
  • the outer areas are connected to each other via the central area.
  • the lower gas distribution space viewed from above, has a Y shape.
  • the lower gas distribution space may also be designed star-shaped with four or more outer regions.
  • both the central area of the lower gas distribution space and the outer areas of the lower gas distribution space are open at the top.
  • the burner base is formed open upwards so that the entire lower gas distribution space is accessible vertically from above. This allows a particularly simple production of the burner base, since no undercuts are finished.
  • the radial secondary air passage is formed on the outside of the burner, between each two outer regions of the lower gas distribution space.
  • the secondary air passage is thus outside the lower gas distribution space on the outside of the burner base.
  • the secondary air may flow radially inward in the space existing between two outer regions of the lower gas distribution space.
  • the number of secondary air passages corresponds to the number of outer regions of the lower gas distribution chambers.
  • each secondary air passage opening of the burner upper part corresponds to a radial secondary air passage.
  • the secondary air passage opening opens into the radially inner end of the secondary air passage.
  • the secondary air passage opening viewed in the flow direction, has a length of at most 10 mm, preferably of at most 7 mm, particularly preferably of at most 5 mm.
  • the flow direction of the gas-air mixture through the secondary air passage opening is assumed to be perpendicular.
  • the length of the secondary air passage opening in the flow direction corresponds to the distance of the radial secondary air passage to the burner interior. This measure is determined by the material thickness of the component of the burner upper part in the region of the secondary air passage opening.
  • the smallest possible extent of the secondary air passage opening in the flow direction is important in order to minimize the flow resistance for the secondary air.
  • each gas passage opening of the burner upper part corresponds to an outer region of the lower gas distribution space.
  • the gas-air mixture thus flows through the outer regions of the lower gas distribution space through the gas passage openings in the burner upper part.
  • the number of gas passage openings corresponds to the number of outer areas of the lower gas distribution spaces.
  • each gas passage opening has a length of at most 10 mm, preferably of at most 7 mm.
  • the length in the direction of flow corresponds to the vertical distance between the lower gas distribution space and the upper gas distribution space in the upper burner part. It is predetermined by the material thickness of the component of the burner top part at the point at which the gas passage opening is located.
  • the smallest possible extent of the gas passage opening in the flow direction is important in order to minimize the flow resistance for the gas-air mixture. In this context it is also important the extent of the gas passage opening in each direction perpendicular to the flow direction is greater than the length of the gas passage opening in the flow direction.
  • the secondary air passage openings are arranged radially inside the gas passage openings. This results from the fact that the secondary air passage openings open into the inner region of the burner, while the gas passage openings are connected to the burner ring surrounding the inner region.
  • the secondary air passage openings are arranged offset in the circumferential direction to the gas passage openings. This radial offset is necessary because the secondary air passage openings emanate from the radial secondary air passages, while the gas passage openings emanate from the outer areas of the lower gas distribution space.
  • the burner upper part has a burner ring receiving, which rests on the burner lower part and in which the gas passage openings and the secondary air passage openings are formed.
  • the burner ring receptacle lies in such a sealing manner on the burner lower part that the entire upper edge of the boundary wall of the lower gas distribution chamber is sealed relative to the burner ring receptacle.
  • the burner ring holder can be disc-shaped. In this case, it has only a small extent in the vertical direction.
  • the burner ring receptacle in the middle has a gas supply for an internal burner located inside.
  • the internal burner is supplied with gas-air mixture via the central gas supply.
  • the internal burner is located in the center of the burner ring and is supplied with secondary air via the radial secondary air passage and the secondary air passage openings.
  • the burner ring rests on the burner ring receptacle.
  • Burner ring and burner ring recording are formed by two separate components that can be made for example of different materials.
  • expensive materials such as brass
  • a favorable aluminum alloy can be used for the other components of the burner top.
  • An alternative constructive embodiment provides to form the burner ring and the burner ring recording as a common component.
  • the number of components of the burner top is hereby minimized. If it is technically possible and permissible, the entire burner top can be made of an aluminum alloy.
  • the burner upper part 2 includes a burner ring 3 with an attached burner cover 4.
  • gas outlet openings 5 are incorporated, burn at which during operation of the gas burner gas flames. These gas outlet openings 5 are bounded above by the burner cover 4.
  • an inner region of the burner ring 3 is a separate internal burner 6, which is closed at the top by an inner burner cover 7.
  • the internal burner 6 also has gas outlet openings 8, at which burn gas flames during operation of the internal burner.
  • To the burner lower part 1 includes a nozzle-injector unit 9, in which the gas provided for combustion with air components (the so-called primary air) is mixed.
  • the nozzle-injector unit 9 serves to supply the gas outlet openings 5 located on the burner ring 3.
  • a further nozzle-injector unit 10 is provided for supplying the internal burner 6.
  • a voltage supply line 11 for an ignition electrode of the gas burner and a signal line 12 of a thermocouple, which is used for detecting a flame present on the burner, can also be seen.
  • FIG. 2 is the burner according to FIG. 1 shown in exploded view.
  • the lower gas distribution space 13 present in the lower burner part 1, in which the gas-air mixture coming from the nozzle-injector unit 9 can be seen, can be seen here is distributed.
  • the gas-air mixture enters the upper gas distribution space 14, which is formed in the burner ring 3.
  • the gas-air mixture is distributed uniformly over the circumference thereof and exits through the gas outlet openings 5, at which the gas flames burn.
  • the upper gas distribution space is closed at the top by the burner ring cover 4.
  • a gas supply 15 for the inner burner 6 is incorporated, which connects the nozzle-injector unit 10 with the inner burner 6.
  • a receiving opening 16 for the ignition electrode 17 and the thermocouple 18th is located in the burner base 1, located in the burner base 1, located in the burner base 1, located in the burner base 1, a receiving opening 16 for the ignition electrode 17 and the thermocouple 18th
  • FIG. 3 shows the burner base 1 in the assembled state.
  • the burner base 1 protrudes from below from a heat shield 19, which is located directly on a cooktop panel, not shown, out.
  • the heat shield 19 serves to protect the hob plate formed, for example, from the heat radiation of the gas burner.
  • the lower gas distribution chamber 13 of the burner base 1 is designed in the present embodiment Y-shaped, with three outer regions 21 branch off from a central region 20 of the lower gas distribution space 13.
  • the space located outside the burner lower part 1 between the outer regions 21 of the lower gas distribution chamber 13 serves as a radial secondary air passage 22.
  • secondary air can flow from the outside into the inner region of the burner.
  • the direction of flow of the secondary air has at least one radially inwardly directed radial component.
  • the secondary air usually flows from the outside obliquely inwards and upwards.
  • FIG. 4 shows the burner base 1 according to FIG. 3 with an attached burner ring receptacle 23.
  • the burner ring receptacle 23 is part of the burner upper part 2 and is designed in the present embodiment as a separate component. However, it is equally possible to carry out the burner ring holder 23 and the burner ring as a common component. It can be seen that the burner ring receptacle 23 has three secondary air passage openings 24, which communicate with the radial secondary air passages 22.
  • the secondary air can, starting from the space outside the gas burner via the radial secondary air passages 22, through the secondary air passage openings 24 in the Interior of the gas burner, specifically in the existing between the inner burner 6 and the burner ring 3 annulus (see FIG. 1 ) stream. In this way, the existing at the gas outlet openings 8 of the inner burner 6 flames are supplied from below with secondary air.
  • the burner ring receptacle 23 has three gas passage openings 25, which connect the lower gas distribution chamber 13 with the upper gas distribution chamber 14 in the burner ring 3.
  • the gas passage openings 25 correspond to the outer areas 21 of the lower gas distribution space 13. The remaining areas of the lower gas distribution space 13 are covered by the burner ring receptacle 23 upwards.
  • the gas passage openings 25 are offset in the circumferential direction and arranged radially outside the secondary air passage openings 24.
  • the burner lower part 1 and the burner ring receiver 23 thus define the flow path for the gas-air mixture, with which the burner ring 3 is supplied and the separate secondary air flow path, which is supplied to the internal burner 6.
  • Centering pins 26 serve to define the position of the burner ring 3 placed on the burner ring holder 23.
  • FIG. 5 shows the Brennerringage 23 from below. To recognize here are also the secondary air passage openings 24 and the gas passage openings 25.
  • a sealing surface 27 is provided for support on the upper side of the burner base 1 and follows the contour of the lower gas distribution chamber 13 in the burner lower part 1.
  • the sealing surface 27 is designed as a flat, uninterrupted sealing surface 27 , The same applies to the top of the burner base 1, which also forms a flat, uninterrupted sealing surface.

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

Claims (10)

  1. Brûleur à gaz comprenant une partie inférieure de brûleur (1) dans laquelle est réalisée une chambre inférieure de distribution de gaz (13) ouverte vers le haut, comprenant une partie supérieure de brûleur (2) pouvant être posée de manière lâche sur la partie inférieure de brûleur (1), laquelle partie supérieure de boîtier obture en partie la chambre inférieure de distribution de gaz (13), laquelle comprend un anneau de brûleur (3) dans lequel est réalisée une chambre supérieure de distribution de gaz (14) annulaire et laquelle présente au moins une ouverture de passage de gaz (25) correspondant à la chambre inférieure de distribution de gaz (13), laquelle ouverture de passage de gaz relie la chambre inférieure de distribution de gaz (13) à la chambre supérieure de distribution de gaz (14), la partie inférieure de brûleur (1) présentant au moins un passage d'air secondaire (22) radial pour l'alimentation en air secondaire dans une zone intérieure du brûleur à gaz, la zone intérieure du brûleur à gaz étant entourée par l'anneau de brûleur (3), la chambre inférieure de distribution de gaz (13) présentant une zone centrale (20) et au moins deux zones extérieures (21) s'étendant radialement vers l'extérieur depuis la zone centrale (20), les zones extérieures (21) étant reliées entre elles par l'intermédiaire de la zone centrale (20), la chambre inférieure de distribution de gaz (13) étant définie par un seul composant dans la partie inférieure de brûleur (1), et le passage d'air secondaire (22) radial étant formé sur un côté extérieur de la partie inférieure de brûleur (1) entre respectivement deux zones extérieures (21) de la chambre inférieure de distribution de gaz (13), la partie supérieure de brûleur (2) présentant au moins une ouverture de passage d'air secondaire (24), laquelle relie un espace présent dans la zone intérieure du brûleur à gaz au passage d'air secondaire (22) radial, la partie supérieure de brûleur (2) présentant un logement (23) d'anneau de brûleur qui repose sur la partie inférieure de brûleur (1) et dans lequel sont réalisées les ouvertures de passage de gaz (25) et les ouvertures de passage d'air secondaire (24), le logement (23) d'anneau de brûleur comprenant une surface d'étanchéité (27) plane, non interrompue et suivant un contour de la chambre inférieure de distribution de gaz (13), destinée à l'appui sur un côté supérieur de la partie inférieure de brûleur (1), et le côté supérieur de la partie inférieure de brûleur (1) formant également une surface d'étanchéité plane non interrompue.
  2. Brûleur à gaz selon la revendication 1, caractérisé en ce que dans la partie inférieure de brûleur (1), la zone centrale (20) de la chambre inférieure de distribution de gaz (13) et les zones extérieures (21) des chambres inférieures de distribution de gaz (13) sont ouvertes vers le haut et/ou en ce que la partie inférieure de brûleur (1) est réalisée de manière ouverte vers le haut de façon à ce que la totalité de la chambre inférieure de distribution de gaz (13) soit accessible verticalement depuis le haut.
  3. Brûleur à gaz selon la revendication 1 ou 2, caractérisé en ce que chaque ouverture de passage d'air secondaire (24) de la partie supérieure de brûleur (2) correspond à un passage d'air secondaire (22) radial.
  4. Brûleur à gaz selon la revendication 3, caractérisé en ce que l'ouverture de passage d'air secondaire (24), en vue dans le sens du flux, présente une longueur de maximum 10 mm, de préférence de maximum 7 mm, de manière particulièrement préférée de maximum 5 mm.
  5. Brûleur à gaz selon l'une quelconque des revendications 1 à 4, caractérisé en ce que chaque ouverture de passage de gaz (25) de la partie supérieure de brûleur (2) correspond à une zone extérieure (21) de la chambre inférieure de distribution de gaz (13).
  6. Brûleur à gaz selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'ouverture de passage de gaz (25), en vue dans le sens du flux, présente une longueur de maximum 10 mm, de préférence de maximum 7 mm.
  7. Brûleur à gaz selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les ouvertures de passage d'air secondaire (24) sont disposées radialement à l'intérieur des ouvertures de passage de gaz (25) et/ou en ce que les ouvertures de passage d'air secondaire (24), en direction circonférentielle, sont disposées de manière décalée par rapport aux ouvertures de passage de gaz (25).
  8. Brûleur à gaz selon la revendication 7, caractérisé en ce que le logement (23) d'anneau de brûleur présente au milieu une alimentation de gaz (15) pour un brûleur intérieur (6) se trouvant dans la zone intérieure.
  9. Brûleur à gaz selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'anneau de brûleur (3) repose sur le logement (23) d'anneau de brûleur.
  10. Brûleur à gaz selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'anneau de brûleur (3) et le logement (23) d'anneau de brûleur sont formés par un composant commun.
EP10150937.0A 2009-01-23 2010-01-18 Brûleur à gaz Active EP2211095B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10150937.0A EP2211095B1 (fr) 2009-01-23 2010-01-18 Brûleur à gaz

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09290054 2009-01-23
EP10150937.0A EP2211095B1 (fr) 2009-01-23 2010-01-18 Brûleur à gaz

Publications (3)

Publication Number Publication Date
EP2211095A2 EP2211095A2 (fr) 2010-07-28
EP2211095A3 EP2211095A3 (fr) 2013-02-20
EP2211095B1 true EP2211095B1 (fr) 2019-03-20

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EP10150937.0A Active EP2211095B1 (fr) 2009-01-23 2010-01-18 Brûleur à gaz

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US (1) US8689779B2 (fr)
EP (1) EP2211095B1 (fr)
CN (1) CN101799161B (fr)

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KR102395217B1 (ko) 2015-10-14 2022-05-10 삼성전자주식회사 가스버너장치 및 이를 포함하는 조리기기
CN105402729B (zh) * 2015-12-10 2018-05-25 宁波方太厨具有限公司 一种稳焰火盖
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CN107191974B (zh) * 2017-06-02 2023-06-30 中山市彬美电器有限公司 一种红外灶具燃烧器
CN113531590A (zh) * 2020-04-15 2021-10-22 宁波方太厨具有限公司 一种用于燃气灶的燃烧器
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Also Published As

Publication number Publication date
US8689779B2 (en) 2014-04-08
CN101799161B (zh) 2015-03-25
EP2211095A2 (fr) 2010-07-28
EP2211095A3 (fr) 2013-02-20
US20100186730A1 (en) 2010-07-29
CN101799161A (zh) 2010-08-11

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