GAS BURNER ASSEMBLY FOR A GAS COOKING APPLIANCE

Description

[0001] The present invention relates to a gas burner assembly for a gas cooking appliance, in particular for a gas cooking hob, according to the preamble of claim 1. Further, the present invention relates to a gas cooking appliance including at least one gas burner assembly. Moreover, the present invention relates to a gas cooking hob, including at least one gas burner assembly.

[0002] In a gas burner assembly with an atmospheric aeration usually the air and gas are mixed by a Venturi tube in a primary aeration phase. For the primary aeration phase about 60 % of air is required. A gas jet drags the air into a Venturi tube. The air and gas are mixed in a convex zone of the Venturi tube and completed in a throat of said Venturi tube. In conventional gas burner assemblies the primary air is fed either from the bottom or the top of the gas cooking appliance.

[0003] Current gas burner assemblies comprise a burner body, a burner crown, a burner cap and an external Venturi tube. In order to improve the efficiency of a gas cooking appliance, the distance between the gas burner assembly and a pan or pot is continuously reduced. However, this leads to a centralized temperature distribution.

[0004] EP 1 195 556 A1 discloses a gas burner assembly comprising a non-circular wall. Said non-circular wall includes a plurality of flame ports. The gas burner assembly includes a central portion and a number of peripheral portions. A Venturi tube extends between the central portion and each peripheral portion. The Venturi tubes are provided for mixing gas fuel and air.

[0005] FR 1 001 834 A discloses a gas burner including a Venturi tube and a cone. Said Venturi tube is provided for mixing gas fuel and incoming air. The mixture of gas and air from the Venturi tube impinges at the cone in order to avoid vortex.

[0006] It is an object of the present invention to provide a gas burner assembly for a gas cooking appliance, which allows an improved efficiency by low complexity.

[0007] The object is achieved by the gas burner assembly according to claim 1.

[0008] According to the present invention:

• an impingement cone is formed at a bottom side of the central portion of the upper burner part,
• the gas injector is arranged below the impingement cone and directed to said impingement cone, so that a gas jet from the gas injector impinges at the impingement cone and said gas jet with dragged atmospheric air is directed to the peripheral portions, and
• a mixture of gas and air is accelerated by the Venturi tubes to the peripheral portions.

[0009] The core of the present invention is the structure of the central portion and peripheral portions of the upper burner part on the one hand and the impingement cone above the gas injector on the other hand. The central portion and the peripheral portions allow a non-circular geometry of the burner, so that the circumference of the upper burner part is maximised in relation to its area. The gas jet from the gas injector impinges on the impingement cone. Then, the gas jet with dragged atmospheric air is directed to the peripheral portions.

[0010] For example, the gas burner assembly is controllable by the pressure of the gas jet.

[0011] Preferably, the gas burner assembly comprises a number of baffles arranged in the central portion and between two entrances of neighboured peripheral portions, so that the gas jet with dragged atmospheric air is directed into the peripheral portions.

[0012] In particular, at least one of the baffles includes an upper part and a lower part, wherein the upper part of the baffle is an integrated part of the upper burner part, while the lower part of the baffle is an integrated part of the lower burner part.

[0013] For example, the upper burner part may include a top wall and a circumferential side wall, wherein preferably said upper burner part is formed as a single-piece part.

[0014] Moreover, the upper burner part may include at least one inclined side wall enclosing at least partially the peripheral portions of said upper burner part, wherein preferably at least a part of the flame ports is arranged at said inclined side wall. Thus, the upper burner part combines a burner cap and a burner crown of a conventional gas burner assembly.

[0015] In particular, the inclined side wall is arranged between the circumferential side wall and the top wall, i.e. above the circumferential side wall and below the top wall, wherein preferably the flame ports are arranged in series at said inclined side wall.

[0016] Further, the lower burner part may also include a central portion and a number of peripheral portions extending radially and horizontally from said central portion, wherein preferably the base areas of the central portion and peripheral portions of the lower burner part are equal or marginally bigger than the central portion and peripheral portions, respectively, of the upper burner part.

[0017] An air inlet may be formed in the central portion of the lower burner part.

[0018] In this case, the lower burner part may include a crown enclosing said air inlet, wherein preferably said crown extends downwards.

[0019] Additionally, the gas burner assembly may comprise a support device for supporting the upper burner part and the lower burner part.

[0020] Further, the support device includes a number of pan support elements, wherein preferably the support device and the pan support elements form a single-piece part.

[0021] In particular, the gas burner assembly comprises a holding device for fastening the gas injector, a spark plug and/or a thermocouple, wherein preferably the holding device is attached at the bottom side of the support device.

[0022] For example, the peripheral portions of the upper burner part and/or the lower burner part are tongue-shaped and/or elongated along the radial and horizontal direction.

[0023] According to a preferred embodiment of the present invention, the upper burner part and/or the lower burner part include four tongue-shaped peripheral portions, so that the upper burner part and/or the lower burner part have a cloverleaf shaped base area. At last, the present invention relates to a gas cooking appliance, in particular a gas cooking hob, wherein the gas cooking appliance comprises at least one gas burner assembly mentioned above.

[0024] Novel and inventive features of the present invention are set forth in the appended claims.

[0025] The present invention will be described in further detail with reference to the drawings, in which

FIG 1

illustrates a schematic exploded perspective view of a gas burner assembly according to a preferred embodiment of the present invention,

FIG 2

illustrates a schematic perspective bottom view of the gas burner assembly according to the preferred embodiment of the present invention,

FIG 3

illustrates a schematic perspective top view of an upper burner part and a lower burner part of the gas burner assembly according to the preferred embodiment of the present invention,

FIG 4

illustrates a schematic perspective bottom view of the upper burner part of the gas burner assembly according to the preferred embodiment of the present invention,

FIG 5

illustrates a schematic bottom view of the lower burner part and the upper burner part of the gas burner assembly according to the preferred embodiment of the present invention,

FIG 6

illustrates a schematic partial sectional side view along the line A-A in FIG 5 of the upper burner part and the lower burner part of the gas burner assembly according to the preferred embodiment of the present invention, and

FIG 7

illustrates a schematic partial sectional side view along the line B-B in FIG 5 of the upper burner part and the lower burner part of the gas burner assembly according to the preferred embodiment of the present invention.

[0026] FIG 1 illustrates a schematic exploded perspective view of a gas burner assembly 10 according to a preferred embodiment of the present invention. The burner assembly 10 is provided for a gas cooking appliance, in particular for a gas cooking hob.

[0027] The gas burner assembly 10 comprises an upper burner part 12, a lower burner part 14, a support device 16 and a holding device 22. In this example, the support device 16 includes four pan support elements 18 extending upward, wherein the support device 16 and the pan support elements 18 form a single-piece part. Further, the gas burner assembly 10 comprises a gas injector 20, a spark plug 24 and a thermocouple 26. The gas injector 20, the spark plug 24 and the thermocouple 26 are attached or attachable at the holding device 22. In turn, the holding device 22 is attached or attachable at the bottom of the support device 16.

[0028] The upper burner part 12 is arranged above the lower burner part 14. The upper burner part 12, the lower burner part 14 and the gas injector 20 form a flat gas burner. The upper burner part 12 and the lower burner part 14 are arranged above the support device 16.

[0029] FIG 2 illustrates a schematic perspective bottom view of the gas burner assembly 10 according to the preferred embodiment of the present invention. FIG 2 clarifies the arrangement of the holding device 22 at the bottom of the support device 16. The holding device 22 is arranged below a central portion of the support device 16. The spark plug 24 and the thermocouple 26 penetrate the support device 16.

[0030] FIG 3 illustrates a schematic perspective top view of the upper burner part 12 and the lower burner part 14 of the gas burner assembly 10 according to the preferred embodiment of the present invention.

[0031] The upper burner part 12 includes a central portion and a number of peripheral portions. Said peripheral portions extend radially from the central portion. In this example, the upper burner part 12 includes four peripheral portions. The upper burner part 12 has a substantially flat structure. In this example, the peripheral portions are tongue-shaped. Thus, the upper burner part 12 has a substantially cloverleaf shaped base area. In this embodiment, the peripheral portions of the upper burner part 12 have the same shape and size. In general, the upper burner part 12 may include two or more peripheral portions having arbitrary shapes, wherein said peripheral portions may have the same shape and/or size or different shapes and/or sizes.

[0032] In a similar way, the lower burner part 14 includes a central portion and a number of peripheral portions. The central portion of the lower burner part 14 includes a crown 46 at its bottom side. The crown 46 is formed as a pipe section and extends downwards. The crown 46 is arranged below the central portions of the upper burner part 12. The crown 46 encloses an air inlet 48 for atmospheric air. Preferably, the base areas of the upper burner part 12 and the lower burner part 14 are substantially the same. In this example, the base area of the lower burner part 14 is marginally bigger than the base area of the upper burner part 12. Thus, the lower burner part 14 includes also four peripheral portions. Further, the lower burner part 14 has also a substantially flat structure. Moreover, the lower burner part 14 has also a cloverleaf shaped base area. In general, the lower burner part 14 may have a base area different from the base area of the upper burner part 12.

[0033] The upper burner part 12 includes a top wall 30 and a circumferential side wall 32. The top wall 30 of the central portion of the upper burner part 12 includes a recess 28 on its top side. In this example, the recess 28 is cone-shaped. Each peripheral portion of the upper burner part 12 includes an inclined side wall 34. Said inclined side wall 34 is interconnected between the top wall 30 and the circumferential side wall 32 of the corresponding peripheral portion of the upper burner part 12. The inclined side wall 34 is arranged below the top wall 30 and above the circumferential side wall 32.

[0034] A plurality of first flame ports 36 and second flame ports 38 is formed in the inclined side wall 34. The diameters of the first flame ports 36 are bigger than the diameters of the second flame ports 38. The flame ports 36 and 38 are arranged in series along the inclined side wall 34. In this example, two second flame ports 38 are arranged between two neighboured first flame ports 36 in each case.

[0035] FIG 4 illustrates a schematic perspective bottom view of the upper burner part 12 of the gas burner assembly 10 according to the preferred embodiment of the present invention.

[0036] The upper burner part 12 includes the central portion and the four peripheral portions extending radial from said central portion. In general, the upper burner part 12 may include two or more peripheral portions. The upper burner part 12 has the substantially flat structure. In this embodiment, the upper burner part 12 has the cloverleaf shaped base area. Alternatively, the upper burner part 12 may have a star-shaped, cross-shaped or they like shaped base area. In general, the upper burner part 12 has a base area, which allows a long as possible circumferential side wall 32. The central portion and the four peripheral portions allow such a relative long circumferential side wall 32 of the upper burner part 12 in relation to the base area of said upper burner part 12 and therefore a relative large number of flame ports 36 and 38. Said large number of flame ports 36 and 38 allows an improved temperature distribution above the gas burner assembly 10. Thus, the temperature distribution on a bottom of a pan or pot arranged above said gas burner assembly 10 is also improved. The plurality of flame ports 36 and 38 is formed in the inclined side walls 34 of the peripheral portions. The flame ports 36 and 38 are arranged in series along the inclined side walls 34.

[0037] The central portion of the upper burner part 12 includes an impingement cone 40. Said impingement cone 40 is formed at the bottom side of the top wall 30 in the central portion of the upper burner part 12. The peak of the impingement cone 40 extends downwards and is arranged in the centre of the upper burner part 12. In other words, the impingement cone 40 is an inverted cone. Further, the gas burner assembly 10 comprises four baffles 42 arranged in the central portion of said gas burner assembly 10. The upper burner part 12 includes four upper parts of said four baffles 42, wherein each upper part of the baffle 42 is formed as a corner of the circumferential side wall 32 and arranged between two entrances of neighboured peripheral portions.

[0038] The gas jet from the gas injector 20 flows upwards against the impingement cone 40 of the upper burner part 12, wherein said gas jet drags atmospheric air. The gas jet impinges at the impingement cone 40 of the upper burner part 12. Then, the baffles 42 divide the flow and direct a mixture of gas and air into the peripheral portions.

[0039] A Venturi tube 44 extends from the central portion to each of the peripheral portions. The Venturi tubes 44 extend in radial and horizontal directions. The mixture of gas and air is accelerated by a pressure drop in the Venturi tube 44. Then, the mixture of gas and air is directed to the flame ports 36 and 38.

[0040] FIG 5 illustrates a schematic bottom view of the lower burner part 14 and the upper burner part 12 of the gas burner assembly 10 according to the preferred embodiment of the present invention.

[0041] Each peripheral portion of the lower burner part 14 includes a base plate having substantially the same shape as the corresponding peripheral portion of the upper burner part 12. The base area of the peripheral portion of the lower burner part 14 is marginally bigger than the base area of the corresponding peripheral portion of the upper burner part 12.

[0042] The central portion of the lower burner part 14 includes four lower parts of the baffles 42. Each baffle 42 is formed by one lower part and one upper part. The lower parts of the four baffles 42 are integral parts of the lower burner part 14, while the upper parts of the four baffles 42 are integral parts of the upper burner part 12. Each lower part of the baffles 42 is arranged between two neighboured peripheral portions of the lower burner part 14.

[0043] The lower parts of the baffles 42 are enclosed by the crown 46. Said crown 46 is formed as a pipe section and extends downwards from the lower burner part 14. The crown 46 encloses the air inlet 48 for atmospheric air. The lower parts of the baffles 42 and the crown 46 form the central portion of the lower burner part 14. The crown 46 forms a vertical channel between the gas injector 20 and the central portion of the upper burner part 12. The impingement cone 40 of the upper burner part 12 is arranged above the centre of the crown 46 of the lower burner part 14. FIG 6 illustrates a schematic partial sectional side view along the line A-A in FIG 5 of the upper burner part 12 and the lower burner part 14 of the gas burner assembly 10 according to the preferred embodiment of the present invention. FIG 6 clarifies the structure of the interior between the upper burner part 12 and the lower burner part 14.

[0044] In the passages between the central portion and each of the peripheral portions the Venturi tube 44 is formed. The Venturi tubes 44 extend radially and horizontally. The Venturi tubes 44 effect a pressure drop from inside to outside, so that the mixture of gas and air is accelerated and finally directed to the circumferential side wall 32 and inclined side wall 34 with the flame ports 36 and 38.

[0045] FIG 7 illustrates a schematic partial sectional side view along the line B-B in FIG 5 of the upper burner part 12 and the lower burner part 14 of the gas burner assembly 10 according to the preferred embodiment of the present invention. FIG 7 clarifies the arrangement of the gas injector 20 below the impingement cone 40. Further, FIG 7 clarifies the arrangement of the baffles 42 in the central portion.

[0046] The gas injector 20 is attached at the holding device 22, while the impingement cone 40 is an integral part of the upper burner part 12. The holding device 22 is attached at the support device 16, which is not shown in FIG 7. The lower burner part 14 rests on the top side of said support device 16. In turn, the upper burner part 12 rests on the lower burner part 14.

[0047] The baffles 42 are formed by one lower part and one upper part in each case. The lower parts of the baffles 42 are integral parts of the lower burner part 14, while the upper parts of the baffles 42 are integral parts of the upper burner part 12. Each baffle 42 is arranged between two neighboured peripheral portions. The baffles 42 direct the mixture of gas and air into the peripheral portions and then to the flame ports 36 and 38.

[0048] The gas burner assembly 10 according to the present invention requires a small number of components. Preferably, the upper burner part 12 is formed as a single-piece part. The upper burner part 12 combines a burner cap and a burner crown of a conventional gas burner assembly, wherein the flame ports are usually integrated parts of the conventional burner crown. The Venturi tubes 44 are formed in the interior between the upper burner part 12 and the lower burner part 14.

List of reference numerals

[0049] 

10

gas burner assembly

12

upper burner part

14

lower burner part

16

support device

18

pan support element

20

gas injector

22

holding device

24

spark plug

26

thermocouple

28

recess

30

top wall

32

circumferential side wall

34

inclined side wall

36

first flame port

38

second flame port

40

impingement cone

42

baffle

44

Venturi tube

46

crown

48

air inlet

Claims

1. A gas burner assembly (10) for a gas cooking appliance, in particular for a gas cooking hob, wherein:

- the gas burner assembly (10) comprises an upper burner part (12), a lower burner part (14) and a gas injector (20),

- the upper burner part (12) is arranged above the lower burner part (14),

- the upper burner part (12) includes a central portion and a number of peripheral portions,

- the peripheral portions extends radially and horizontally from the central portion,

- a Venturi tube (44) extends between the central portion and each peripheral portion, and

- a plurality of flame ports (36, 38) is arranged at the circumference of the peripheral portions,

characterised in that
an impingement cone (40) is formed at a bottom side of the central portion of the upper burner part (12), wherein the gas injector (20) is arranged below the impingement cone (40) and directed to said impingement cone (40), so that a gas jet from the gas injector (20) impinges on the impingement cone (40) and said gas jet with dragged atmospheric air is directed to the peripheral portions, and wherein a mixture of gas and air is accelerated by the Venturi tube (44) to the peripheral portions.

2. The gas burner assembly according to claim 1,
characterised in that
the gas burner assembly (10) is controllable by the pressure of the gas jet.

3. The gas burner assembly according to claim 1 or 2,
characterised in that
the gas burner assembly (10) comprises a number of baffles (42) arranged in the central portion and between two entrances of neighboured peripheral portions, so that the gas jet with dragged atmospheric air is directed into the peripheral portions, wherein preferably at least one of the baffles (42) includes an upper part and a lower part, wherein the upper part of the baffle (42) is an integrated part of the upper burner part (12), while the lower part of the baffle (42) is an integrated part of the lower burner part (14).

4. The gas burner assembly according to any one of the preceding claims,
characterised in that
the upper burner part (12) includes a top wall (30) and a circumferential side wall (32), wherein preferably said upper burner part (12) is a single-piece part.

5. The gas burner assembly according to any one of the preceding claims,
characterised in that
the upper burner part (12) includes an inclined side wall (34) enclosing at least partially the peripheral portions, wherein preferably at least a part of the flame ports (36, 38) is arranged at said inclined side wall (34).

6. The gas burner assembly according to claim 4 and 5,
characterised in that
the inclined side wall (34) is arranged between the circumferential side wall (32) and the top wall (30), i.e. above the circumferential side wall (32) and below the top wall (30), wherein preferably the flame ports (36, 38) are arranged in series at said inclined side wall (34).

7. The gas burner assembly according to any one of the preceding claims,
characterised in that
the lower burner part (14) includes a central portion and a number of peripheral portions extending radially and horizontally from said central portion, wherein preferably the base areas of the central portion and peripheral portions of the lower burner part (14) are equal or marginally bigger than the central portion and peripheral portions, respectively, of the upper burner part (12).

8. The gas burner assembly according to any one of the preceding claims,
characterised in that
an air inlet (48) is formed in the central portion of the lower burner part (14).

9. The gas burner assembly according to claim 8,
characterised in that
the lower burner part (14) includes a crown (46) enclosing the air inlet (48), wherein preferably said crown (46) extends downwards.

10. The gas burner assembly according to any one of the preceding claims,
characterised in that
the gas burner assembly (10) comprises a support device (16) for supporting the upper burner part (12) and the lower burner part (14).

11. The gas burner assembly according to claim 10,
characterised in that
the support device (16) includes a number of pan support elements (18), wherein preferably the support device (16) and the pan support elements (18) form a single-piece part.

12. The gas burner assembly according to any one of the preceding claims,
characterised in that
the gas burner assembly (10) comprises a holding device (22) for fastening the gas injector (20), a spark plug (24) and/or a thermocouple (26), wherein preferably the holding device (22) is attached at the bottom side of the support device (16).

13. The gas burner assembly according to any one of the preceding claims,
characterised in that
the peripheral portions of the upper burner part (12) and/or the lower burner part (14) are tongue-shaped and/or elongated along the radial and horizontal direction.

14. The gas burner assembly according to any one of the preceding claims,
characterised in that
the upper burner part (12) and/or the lower burner part (14) include four tongue-shaped peripheral portions, so that the upper burner part (12) and/or the lower burner part (14) have a cloverleaf shaped base area.

15. A gas cooking appliance, in particular a gas cooking hob, comprising at least one gas burner assembly (10),
characterised in that
the gas cooking appliance comprises at least one gas burner assembly (10) according to any one of the claims 1 to 14.

Ansprüche

1. Gasbrenneranordnung (10) für einen Gaskocher, insbesondere für ein Gaskochfeld, wobei:

- die Gasbrenneranordnung (10) einen oberen Brennerteil (12), einen unteren Brennerteil (14) und eine Gasdüse (20) umfasst,

- der obere Brennerteil (12) über dem unteren Brennerteil (14) angeordnet ist,

- der obere Brennerteil (12) einen mittleren Abschnitt und eine Anzahl von umfangsseitigen Abschnitten umfasst,

- sich die umfangsseitigen Abschnitte radial und horizontal von dem mittleren Abschnitt erstrecken,

- sich ein Venturirohr (44) zwischen dem mittleren Abschnitt und jedem umfangsseitigen Abschnitt erstreckt und

- eine Vielzahl von Flammöffnungen (36, 38) am Umfang der umfangsseitigen Abschnitte angeordnet ist,

dadurch gekennzeichnet, dass
ein Aufprallkegel (40) auf einer Bodenseite des mittleren Abschnitts des oberen Brennerteils (12) ausgebildet ist, wobei die Gasdüse (20) unter dem Aufprallkegel (40) angeordnet und auf den Aufprallkegel (40) gerichtet ist, so dass ein Gasstrahl aus der Gasdüse (20) auf dem Aufprallkegel (40) aufprallt und der Gasstrahl mit mitgerissener atmosphärischer Luft auf die umfangsseitigen Abschnitten gerichtet ist, und wobei eine Mischung aus Gas und Luft durch das Venturirohr (44) zu den umfangsseitigen Abschnitten beschleunigt wird.

2. Gasbrenneranordnung nach Anspruch 1,
dadurch gekennzeichnet, dass
die Gasbrenneranordnung (10) durch den Druck des Gasstrahls steuerbar ist.

3. Gasbrenneranordnung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
die Gasbrenneranordnung (10) eine Anzahl von Prallplatten (42) umfasst, die in dem mittleren Abschnitt und zwischen zwei Eingängen von benachbarten umfangsseitigen Abschnitten angeordnet sind, so dass der Gasstrahl mit mitgerissener atmosphärischer Luft in die umfangsseitigen Abschnitte gerichtet ist, wobei vorzugsweise wenigstens eine der Prallplatten (42) einen oberen Teil und einen unteren Teil umfasst, wobei der obere Teil der Prallplatte (42) ein Bestandteil des oberen Brennerteils (12) ist, während der untere Teil der Prallplatte (42) ein Bestandteil des unteren Brennerteils (14) ist.

4. Gasbrenneranordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der obere Brennerteil (12) eine obere Wand (30) und eine umlaufende Seitenwand (32) umfasst, wobei vorzugsweise der obere Brennerteil (12) ein einstückiges Teil ist.

5. Gasbrenneranordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der obere Brennerteil (12) eine geneigte Seitenwand (34) umfasst, die die umfangsseitigen Abschnitte wenigstens zum Teil umschließt, wobei vorzugsweise wenigstens ein Teil der Flammöffnungen (36, 38) an der geneigten Seitenwand (34) angeordnet ist.

6. Gasbrenneranordnung nach Anspruch 4 und 5,
dadurch gekennzeichnet, dass
die geneigte Seitenwand (34) zwischen der umlaufenden Seitenwand (32) und der oberen Wand (30), d.h. über der umlaufenden Seitenwand (32) und unter der oberen Wand (30), angeordnet ist, wobei vorzugsweise die Flammöffnungen (36, 38) in Reihe an der geneigten Seitenwand (34) angeordnet sind.

7. Gasbrenneranordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der untere Brennerteil (14) einen mittleren Abschnitt und eine Anzahl von umfangsseitigen Abschnitten umfasst, die sich radial und horizontal von dem mittleren Abschnitt erstrecken, wobei vorzugsweise die Basisflächen des mittleren Abschnitts und der umfangsseitigen Abschnitte des unteren Brennerteils (14) gleich oder geringfügig größer als der mittlere Abschnitt beziehungsweise die umfangsseitigen Abschnitte des oberen Brennerteils (12) sind.

8. Gasbrenneranordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
ein Lufteinlass (48) in dem mittleren Abschnitt des unteren Brennerteils (14) ausgebildet ist.

9. Gasbrenneranordnung nach Anspruch 8,
dadurch gekennzeichnet, dass
der untere Brennerteil (14) einen Kranz (46) umfasst, der den Lufteinlass (48) umschließt, wobei sich vorzugsweise der Kranz (46) nach unten erstreckt.

10. Gasbrenneranordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Gasbrenneranordnung (10) eine Tragvorrichtung (16) zum Tragen des oberen Brennerteils (12) und des unteren Brennerteils (14) umfasst.

11. Gasbrenneranordnung nach Anspruch 10,
dadurch gekennzeichnet, dass
die Tragvorrichtung (16) eine Anzahl von Topftragelementen (18) umfasst, wobei vorzugsweise die Tragvorrichtung (16) und die Topftragelemente (18) ein einstückiges Teil bilden.

12. Gasbrenneranordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Gasbrenneranordnung (10) eine Haltevorrichtung (22) zum Befestigen der Gasdüse (20), eine Zündkerze (24) und/oder ein Thermoelement (26) umfasst, wobei vorzugsweise die Haltevorrichtung (22) auf der Bodenseite der Tragvorrichtung (16) angebracht ist.

13. Gasbrenneranordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die umfangsseitigen Abschnitte des oberen Brennerteils (12) und/oder des unteren Brennerteils (14) zungenförmig und/oder längserstreckt entlang der radialen und horizontalen Richtung sind.

14. Gasbrenneranordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der obere Brennerteil (12) und/oder der untere Brennerteil (14) vier zungenförmige umfangsseitige Abschnitte umfassen, so dass der obere Brennerteil (12) und/oder der untere Brennerteil (14) eine kleeblattförmige Basisfläche aufweisen.

15. Gaskocher, insbesondere Gaskochfeld, umfassend wenigstens eine Gasbrenneranordnung (10),
dadurch gekennzeichnet, dass
der Gaskocher wenigstens eine Gasbrenneranordnung (10) nach einem der Ansprüche 1 bis 14 umfasst.

Revendications

1. Ensemble de brûleur à gaz (10) pour un appareil de cuisson au gaz, en particulier pour une plaque de cuisson au gaz, dans lequel:

l'ensemble de brûleur à gaz (10) comprend une partie de brûleur supérieure (12), une partie de brûleur inférieure (14) et un injecteur de gaz (20),

la partie de brûleur supérieure (12) est agencée au-dessus de la partie de brûleur inférieure (14),

la partie de brûleur supérieure (12) comprend une partie centrale et un certain nombre de parties périphériques,

les parties périphériques s'étendent radialement et horizontalement à partir de la partie centrale,

un tube de Venturi (44) s'étend entre la partie centrale et chaque partie périphérique, et

une pluralité d'orifices de formation de flamme (36, 38) sont agencés à la circonférence des parties périphériques,

caractérisé en ce qu'un cône d'impact (40) est formé au niveau d'un côté inférieur de la partie centrale de la partie de brûleur supérieure (12), dans lequel l'injecteur de gaz (20) est agencé en dessous du cône d'impact (40) et est orienté vers ledit cône d'impact (40), de telle sorte qu'un jet de gaz en provenance de l'injecteur de gaz (20) frappe le cône d'impact (40) et que ledit jet de gaz accompagné d'air atmosphérique entraîné soit dirigé vers les parties périphériques, et dans lequel un mélange de gaz et d'air est accéléré par le tube de Venturi (44) jusqu'aux parties périphériques.

2. Ensemble de brûleur à gaz selon la revendication 1, caractérisé en ce que l'ensemble de brûleur à gaz (10) est commandé ou peut être commandé par la pression du jet de gaz.

3. Ensemble de brûleur à gaz selon la revendication 1 ou 2, caractérisé en ce que l'ensemble de brûleur à gaz (10) comprend un certain nombre de déflecteurs (42) agencés dans la partie centrale et entre deux entrées de parties périphériques voisines, de telle sorte que le jet de gaz accompagné d'air atmosphérique entraîné soit dirigé dans les parties périphériques, dans lequel de préférence au moins un des déflecteurs (42) comprend une partie supérieure et une partie inférieure, dans lequel la partie supérieure du déflecteur (42) est une partie intégrée de la partie de brûleur supérieure (12), alors que la partie inférieure du déflecteur (42) est une partie intégrée de la partie de brûleur inférieure (14).

4. Ensemble de brûleur à gaz selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie de brûleur supérieure (12) comprend une paroi supérieure (30) et une paroi latérale circonférentielle (32), dans lequel de préférence ladite partie de brûleur supérieure (12) est une partie d'une seule pièce.

5. Ensemble de brûleur à gaz selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie de brûleur supérieure (12) comprend une paroi latérale inclinée (34) qui entoure au moins partiellement les parties périphériques, dans lequel de préférence au moins une partie des orifices de formation de flamme (36, 38) sont agencés au niveau de ladite paroi latérale inclinée (34).

6. L'ensemble de brûleur à gaz selon la revendication 4 et 5, caractérisé en ce que la paroi latérale inclinée (34) est agencée entre la paroi latérale circonférentielle (32) et la paroi supérieure (30), c'est-à-dire au-dessus de la paroi latérale circonférentielle (32) et en dessous de la paroi supérieure (30), dans lequel de préférence les orifices de formation de flamme (36, 38) sont agencés en série au niveau de ladite paroi latérale inclinée (34).

7. Ensemble de brûleur à gaz selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie de brûleur inférieure (14) comprend une partie centrale et un certain nombre de parties périphériques qui s'étendent radialement et horizontalement à partir de ladite partie centrale, dans lequel de préférence les surfaces de base de la partie centrale et des parties périphériques de la partie de brûleur inférieure (14) sont identiques à ou marginalement plus grandes que la partie centrale et les parties périphériques, respectivement, de la partie de brûleur supérieure (12).

8. Ensemble de brûleur à gaz selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une entrée d'air (48) est formée dans la partie centrale de la partie de brûleur inférieure (14) .

9. Ensemble de brûleur à gaz selon la revendication 8, caractérisé en ce que la partie de brûleur inférieure (14) comprend une couronne (46) qui entoure l'entrée d'air (48), dans lequel de préférence ladite couronne (46) s'étend vers le bas.

10. Ensemble de brûleur à gaz selon l'une quelconque des revendications précédentes, caractérisé en ce que l'ensemble de brûleur à gaz (10) comprend un dispositif de support (16) pour supporter la partie de brûleur supérieure (12) et la partie de brûleur inférieure (14).

11. Ensemble de brûleur à gaz selon la revendication 10, caractérisé en ce que le dispositif de support (16) comprend un certain nombre d'éléments de support de casserole (18), dans lequel de préférence le dispositif de support (16) et les éléments de support de casserole (18) forment une partie d'une seule pièce.

12. Ensemble de brûleur à gaz selon l'une quelconque des revendications précédentes, caractérisé en ce que l'ensemble de brûleur à gaz (10) comprend un dispositif de maintien (22) pour attacher l'injecteur de gaz (20), une bougie d'allumage (24) et/ou un thermocouple (26), dans lequel de préférence le dispositif de maintien (22) est attaché au côté inférieur du dispositif de support (16).

13. Ensemble de brûleur à gaz selon l'une quelconque des revendications précédentes, caractérisé en ce que les parties périphériques de la partie de brûleur supérieure (12) et/ou de la partie de brûleur inférieure (14) sont en forme de languette et/ou allongées le long de la direction radiale et horizontale.

14. Ensemble de brûleur à gaz selon l'une quelconque des revendications précédentes, caractérisé en ce que la partie de brûleur supérieure (12) et/ou la partie de brûleur inférieure (14) comprend(-nnent) quatre parties périphériques en forme de languette, de telle sorte que la partie de brûleur supérieure (12) et/ou la partie de brûleur inférieure (14) présente(nt) une surface de base en forme de feuille de trèfle.

15. Appareil de cuisson au gaz, en particulier une plaque de cuisson au gaz, comprenant au moins un ensemble de brûleur à gaz (10), caractérisé en ce que l'appareil de cuisson au gaz comprend au moins un ensemble de brûleur à gaz (10) selon l'une quelconque des revendications 1 à 14.

Drawing