EP3679299B1 - Gas burner arrangement and household cooking appliance - Google Patents

Description

The present invention relates to a gas burner arrangement for a domestic cooking appliance and a domestic cooking appliance with such a gas burner arrangement.

Gas burners for household cooking appliances mostly comprise a burner base in which a mixing chamber can be provided, a nozzle holder which has a gas nozzle for injecting fuel gas into the mixing chamber, and a burner cover placed on the burner base which can have mixture outlet openings. When the fuel gas is injected into the mixing chamber, primary air is sucked in laterally between the gas nozzle and an inflow edge of the mixing chamber and mixed with the fuel gas. The fuel gas / primary air mixture formed in this way is fed to a mixture distribution chamber provided between the lower burner part and the burner cover and is distributed uniformly to the mixture outlet openings by this for flame formation. The primary air is usually supplied to the mixing chamber from below a hob plate on which the gas burner is mounted.

the US 2017/0108226 A1 and the WO 2016/170497 A1 each describe a generic gas burner with an internal burner and an external burner that encircles the internal burner in a ring shape.

the US 2006/051718 A1 shows generic gas burner with a first flame circle and a second flame circle. The flame circles are positioned one above the other. Against this background, it is an object of the present invention to provide an improved gas burner arrangement.

Accordingly, a gas burner arrangement for a domestic cooking appliance is proposed. The gas burner arrangement comprises a gas burner and a hob plate on which the gas burner is mounted, the gas burner having a first mixing chamber for mixing fuel gas with primary air, a second mixing chamber separate from the first mixing chamber for mixing fuel gas with primary air, at least one first primary air opening for supply the primary air to the first mixing chamber and at least one second primary air opening for supplying the primary air to the second mixing chamber, the at least one first primary air opening below and the at least one second Primary air opening is arranged above the hob plate, wherein the gas burner comprises a nozzle holder and a burner lower part, wherein the hob plate is arranged between the nozzle holder and the burner lower part, and wherein the at least one second primary air opening is passed through the burner lower part.

Because the second primary air opening is arranged above and not below the hob plate, primary air can be sucked in from above the hob plate. This can prevent the burner flame from going out in minimum fire mode in the event of pressure surges in an interior of a domestic cooking appliance with such a gas burner arrangement.

The fact that the first mixing chamber is separate from the second mixing chamber is to be understood as meaning that preferably no fluid connection is provided between the first mixing chamber and the second mixing chamber. The first mixing chamber and the second mixing chamber are, however, arranged in particular in a common burner housing of the gas burner. The hob plate comprises a front side and a rear side facing away from the front side. With regard to a direction of gravity, the front side is arranged above the rear side. The first primary air opening is set up to suck in the primary air from an interior of the household appliance. In contrast to this, the second primary air opening is set up to draw in the primary air not from the interior but from the surroundings of the domestic cooking appliance. The hob plate can, for example, be a steel plate, in particular a sheet steel, a glass ceramic plate or a plate made of tempered glass. The gas burner arrangement can comprise a multiplicity of gas burners. The gas burner preferably comprises a first flame circuit to which the first mixing chamber is assigned and a second flame circuit to which the second mixing chamber is assigned. The gas burner can therefore also be referred to as a two-circuit gas burner.

According to one embodiment, the first mixing chamber and the second mixing chamber extend through the hob plate.

The hob plate can have an opening through which the gas burner is passed. The gas burner is in particular attached to the opening.

The gas burner comprises a nozzle holder and a burner lower part, the hob plate being arranged between the nozzle holder and the burner lower part.

For example, the hob plate is clamped between the nozzle holder and the lower burner part. The nozzle holder can be screwed to the lower part of the burner, for example. The nozzle holder is in particular arranged below the hob plate and the lower burner part is arranged above the hob plate.

According to a further embodiment, the first mixing chamber and the second mixing chamber are provided in the lower burner part.

The lower part of the burner is, in particular, made in one piece. The lower burner part can be, for example, a die-cast aluminum component or a die-cast magnesium component. The lower burner part comprises a disk-shaped base section from which a first conical or cylindrical wall assigned to the first mixing chamber and a second conical or cylindrical wall assigned to the second mixing chamber extend. The first mixing chamber is in particular provided in the middle of the lower burner part. The second mixing chamber can be positioned off-center. In particular, the first mixing chamber is constructed to be rotationally symmetrical to an axis of symmetry of the gas burner.

According to a further embodiment, a first gas nozzle for injecting the fuel gas into the first mixing chamber and a second gas nozzle for injecting the fuel gas into the second mixing chamber are accommodated in the nozzle holder.

The first gas nozzle and the second gas nozzle are assigned to the nozzle holder. For example, the gas nozzles are screwed into the nozzle holder. For this purpose, corresponding bores can be provided in the nozzle holder, with the aid of which the fuel gas can also be supplied to the gas nozzles.

According to a further embodiment, the first gas nozzle is arranged at a distance from an inflow edge of the first mixing chamber and the second gas nozzle is arranged at a distance from an inflow edge of the second mixing chamber.

That is, the first gas nozzle is arranged outside the first mixing chamber and the second gas nozzle is arranged outside the second mixing chamber.

According to a further embodiment, the nozzle holder comprises a cup-shaped nozzle receiving section in which the second gas nozzle is received.

In the present case, “cup-shaped” is to be understood as meaning that the nozzle receiving section has a base and a wall running around the base. The wall is closed. This means that the wall has no openings or holes. An upper edge of the wall can be part of a support surface of the nozzle holder. The nozzle holder rests with the support surface on the back of the hob plate. A bore into which the second gas nozzle is screwed can be provided in the bottom of the nozzle receiving section.

According to a further embodiment, the second mixing chamber is received at least in sections in the nozzle receiving section.

That is, the second mixing chamber protrudes into the nozzle receiving portion. A cavity enclosed by the nozzle receiving section breaks through the support surface of the nozzle holder. The cavity is in fluid connection with the second primary air supply opening via the opening provided in the hob plate.

According to a further embodiment, the at least one first primary air opening is passed through the nozzle holder.

Two first primary air openings are preferably provided, which laterally supply the primary air to the first gas nozzle. However, only a first primary air opening can also be provided.

The at least one second primary air opening is passed through the lower burner part.

In particular, the second primary air opening can be designed as a bore provided in a base section of the lower burner part. The number of second primary air openings is arbitrary. For example, five second primary air openings can be provided.

According to a further embodiment, the gas burner comprises a first mixture distribution chamber, which is in fluid communication with the first mixing chamber, and one of the first mixture distribution chamber separate second mixture distribution chamber, which is in fluid communication with the second mixing chamber.

The fact that the first mixture distribution chamber is separated from the second mixture distribution chamber is to be understood as meaning that preferably no fluid connection is provided between the first mixture distribution chamber and the second mixture distribution chamber. However, the mixture distribution chambers can also be connected to one another with the aid of an optional opening provided in an intermediate element of the gas burner.

According to a further embodiment, the gas burner comprises a burner cover and an intermediate element arranged between the burner cover and the lower burner part.

The burner cover and the intermediate element can also be designed as an aluminum die-cast component or as a magnesium die-cast component. The nozzle holder, the burner base, the intermediate element and the burner cover form a burner housing of the gas burner. The nozzle holder, the burner base, the intermediate element and the burner cover are separate components.

According to a further embodiment, the first mixture distribution chamber is arranged between the burner cover and the intermediate element and the second mixture distribution chamber is arranged between the intermediate element and the lower burner part.

That is to say, the intermediate element spatially and preferably also fluidically separates the first mixture distribution chamber from the second mixture distribution chamber.

According to a further embodiment, the intermediate element comprises a plurality of first mixture outlet openings assigned to the first mixture distribution chamber and a plurality of second mixture outlet openings assigned to the second mixture distribution chamber.

In particular, the first mixture distribution chamber is designed to distribute the fuel gas / primary air mixture evenly to the first mixture outlet openings, and the second mixture distribution chamber is designed to distribute the fuel gas / primary air mixture uniformly to the second mixture outlet openings. The mixture outlet openings are each arranged uniformly distributed around a circumference of the intermediate element. The number of the respective mixture outlet openings is arbitrary. The first mixture outlet openings can form a first flame circle of the gas burner, and the second mixture outlet openings can form a second flame circle of the gas burner.

Furthermore, a domestic cooking appliance, in particular a gas stove, with such a gas burner arrangement is proposed.

The domestic cooking appliance preferably has such a gas burner arrangement with a plurality of gas burners. A gas control valve or gas control valve can be assigned to each gas burner. The gas control valve can be configured to have a To regulate the fuel gas volume flow to the first gas nozzle and / or to the second gas nozzle continuously or in steps. Depending on the position of a control knob of the gas control valve, fuel gas can be supplied to either only the first gas nozzle, only the second gas nozzle or both gas nozzles at the same time. The gas control valve can also be a so-called step valve.

The household cooking appliance can be a free-standing appliance or a built-in appliance. The household appliance is preferably a household gas stove. For example, the household cooking appliance can have four gas burners. The gas control valve is clamped to a main gas line of the domestic cooking appliance and is fluidically connected to the gas burner assigned to it via two gas supply lines, namely one for the first gas nozzle and one for the second gas nozzle. Furthermore, an ignition device, which can be integrated into the gas control valve, and an ignition element arranged directly on the gas burner, for example a spark plug, can be assigned to each gas burner. Furthermore, each gas burner can also have a thermocouple for flame monitoring. The thermocouple is electrically connected to the gas control valve of the respective gas burner.

Further possible implementations of the gas burner arrangement and / or the domestic cooking appliance also include combinations of features or embodiments described above or below with regard to the exemplary embodiments, which are not explicitly mentioned. The person skilled in the art will also add individual aspects as improvements or additions to the respective basic shape of the gas burner arrangement and / or the domestic cooking appliance.

• Fig. 1 zeigt eine schematische Ansicht einer Ausführungsform eines Haushaltsgargeräts;
• Fig. 2 zeigt eine schematische Explosionsansicht einer Ausführungsform eines Gasbrenners für das Haushaltsgargerät gemäß Fig. 1;
• Fig. 3 zeigt eine schematische Schnittansicht einer Gasbrenneranordnung mit einem Gasbrenner gemäß Fig. 1;
• Fig. 4 zeigt eine weitere schematische Schnittansicht der Gasbrenneranordnung gemäß Fig. 3;
• Fig. 5 zeigt eine schematische geschnittene Explosionsansicht der Gasbrenneranordnung gemäß Fig. 3;
• Fig. 6 zeigt eine weitere schematische geschnittene Explosionsansicht der Gasbrenneranordnung gemäß Fig. 3;
• Fig. 7 zeigt eine schematische perspektivische Ansicht einer Ausführungsform eines Düsenhalters für den Gasbrenner gemäß Fig. 2; und
• Fig. 8 zeigt eine schematische Schnittansicht des Düsenhalters gemäß Fig. 7.

Further advantageous configurations and aspects of the gas burner arrangement and / or the domestic cooking appliance are the subject matter of the subclaims and the exemplary embodiments of the gas burner arrangement and / or the domestic cooking appliance described below. In the following, the gas burner arrangement and / or the domestic cooking appliance are explained in more detail on the basis of preferred embodiments with reference to the accompanying figures.

• Fig. 1 shows a schematic view of an embodiment of a domestic cooking appliance;
• Fig. 2 shows a schematic exploded view of an embodiment of a gas burner for the domestic cooking appliance according to FIG Fig. 1 ;
• Fig. 3 FIG. 11 shows a schematic sectional view of a gas burner arrangement with a gas burner according to FIG Fig. 1 ;
• Fig. 4 FIG. 11 shows a further schematic sectional view of the gas burner arrangement according to FIG Fig. 3 ;
• Fig. 5 shows a schematic sectional exploded view of the gas burner arrangement according to FIG Fig. 3 ;
• Fig. 6 FIG. 11 shows a further schematic sectional exploded view of the gas burner arrangement according to FIG Fig. 3 ;
• Fig. 7 FIG. 11 shows a schematic perspective view of an embodiment of a nozzle holder for the gas burner according to FIG Fig. 2 ; and
• Fig. 8 FIG. 11 shows a schematic sectional view of the nozzle holder according to FIG Fig. 7 .

In the figures, elements that are the same or have the same function have been given the same reference symbols, unless otherwise stated.

the Fig. 1 shows a schematic view of an embodiment of a domestic cooking appliance 1. The domestic cooking appliance 1 is in particular a gas stove or a domestic gas stove. The household cooking appliance 1 can be a built-in appliance or a floor-standing appliance. The household cooking appliance 1 comprises several gas burners 2. The gas burners 2 can also be referred to as household appliance gas burners. The number of gas burners 2 is arbitrary. For example, four gas burners 2 can be provided. The gas burners 2 are arranged on a common hob plate 3. For example, the gas burners 2 can be attached to the hob plate 3. The gas burners 2 can each have a ring-shaped circumferential heat protection, which is designed to protect the hob plate 3 from the introduction of heat by the waste heat from the gas burners 2.

The hob plate 3 can be, for example, a sheet steel, a glass ceramic plate or a plate made of tempered glass. Each gas burner 2 is assigned a gas regulating valve or gas control valve 4, with the aid of which a fuel gas flow fed to a respective gas burner 2 is optionally switched on, switched off and, in particular, in particular infinitely variable, can be adjusted. Alternatively, the gas control valves 4 can also be set up to regulate the gas combustion stream supplied to the respective gas burner 2 in a stepped manner. That is, the gas control valves 4 can be designed as stepped gas control valves or as so-called step valves. The domestic cooking appliance 1 can furthermore comprise a door 5 provided on the front side. The door 5 can for example be an oven door. The door 5 can be pivoted about a pivot axis provided at a lower end of the door 5 for opening and closing. Alternatively, the door 5 can be arranged on a baking trolley that can be pulled out of the domestic cooking appliance 1.

the Fig. 2 shows a schematic perspective exploded view of an embodiment of a gas burner 2. The gas burner 2 comprises a nozzle holder 6, a burner lower part 7 arranged on the nozzle holder 6, an intermediate element 8 arranged on the burner lower part 7 and a burner cover 9 arranged on the intermediate element 8 arranged between the nozzle holder 6 and the intermediate element 8, and the intermediate element 8 is arranged between the burner lower part 7 and the burner cover 9.

The nozzle holder 6, the lower burner part 7, the intermediate element 8 and the burner cover 9 are each made of an aluminum alloy or a magnesium alloy, for example. For example, the nozzle holder 6, the lower burner part 7, the intermediate element 8 and the burner cover 9 can be aluminum die-cast components or magnesium die-cast components. The nozzle holder 6, the lower burner part 7, the intermediate element 8 and the burner cover 9 are separate components which together form a burner housing 10 of the gas burner 2.

the Fig. 3 and 4th each show a schematic sectional view of an embodiment of a gas burner arrangement 11 with such a gas burner 2 Fig 5 and 6th each show a schematic sectional exploded view of the gas burner arrangement 11. In the following, reference is made to FIG Figures 3 to 6 referenced at the same time.

The gas burner arrangement 11 comprises one or more gas burners 2 as well as the hob plate 3. The hob plate 3 comprises an upper side or front side 12 and an underside or rear side 13. When viewed in a direction of gravity g, the rear side 13 is arranged below the front side 12. The hob plate 3 comprises an opening 14 through which the gas burner 2 is passed. Such an opening 14 can be assigned to each gas burner 2. The opening 14 can have a circular geometry exhibit. The opening 14 can, however, also comprise any other geometry.

The nozzle holder 6 comprises, as in FIG Fig. 7 shown, a first support finger 15 and a second support finger 16. The support fingers 15, 16 are positioned at an angle to one another. The support fingers 15, 16 are part of a support surface 17 of the nozzle holder 6. With the support surface 17, the nozzle holder 6 rests on the rear side 13 of the hob plate 3. The second support finger 16 can have a plurality of receiving sections 18 to 21 in which an ignition element or a thermocouple can be received. A thermocouple and an ignition element are assigned to each gas burner 2.

The nozzle holder 6 comprises a base body 22 ( Fig. 8 ), in which a first gas nozzle 23 is received. A bore 24 is provided in the base body 22, which can be designed as a threaded bore, for example. The first gas nozzle 23 is screwed into the bore 24. The bore 24 is in fluid communication with a connection 25 of the nozzle holder 6. A gas supply line (not shown) can be connected to the connection 25. A fuel gas can thus be supplied to the first gas nozzle 23 via the connection 25 and the bore 24.

In the base body 22, a receiving section 26 is also provided, in which the lower burner part 7 can be received at least in sections. The receiving section 26 can be designed to be rotationally symmetrical to a central axis or axis of symmetry M of the gas burner 2. The first gas nozzle 23 is preferably also constructed to be rotationally symmetrical to the axis of symmetry M. The receiving section 26 can have a cylindrical geometry. The receiving section 26 can, however, also widen conically starting from the first gas nozzle 23 in the direction of the support surface 17. Two first primary air openings 27, 28 are also provided in the base body 22, with the aid of which primary air P can be supplied to the first gas nozzle 23.

The nozzle holder 6 furthermore comprises a flange 29 which rises above the support surface 17 and runs around the receiving section 26. The flange 29 is preferably of annular design. The flange 29 can extend at least in sections into the opening 14 of the hob plate 3 or extend through it.

The nozzle holder 6 furthermore comprises a pot-shaped nozzle receiving section 30 that is formed in one piece with the base body 22. In particular, the nozzle receiving section 30 is formed in one piece with the base body 22. A second gas nozzle 31 is received in the nozzle receiving section 30. The fact that the nozzle receiving section 30 is cup-shaped is to be understood as having a base 32 and a closed wall 33 running around the base 32. The fact that the wall 33 is closed is to be understood as meaning that it has no openings or bores.

The nozzle receiving section 30 is open in the direction of the support surface 17 or in the direction of the rear side 13 of the hob plate 3. The nozzle receiving section 30 encloses a cavity 34 in which the gas nozzle 31 is received. The cavity 34 breaks through the support surface 17. That is to say, an upper edge 35 of the wall 33 is part of the support surface 17. A bore 36 is provided on the base 32, which pierces the base 32. The second gas nozzle 31 is received in the bore 36. For example, the second gas nozzle 31 is screwed into the bore 36. A gas supply line (not shown) for supplying fuel gas to the second gas nozzle 31 can be connected to the bore 36.

Now returning to the Figures 3 to 6 The burner lower part 6 comprises a disk-shaped base section 37, which can be constructed rotationally symmetrical to the axis of symmetry M, and a flange 38 protruding from the base section 37 on the underside. A first mixing chamber 39 is provided in the center of the base section 37 and rotationally symmetrical to the axis of symmetry M. The first mixing chamber 39 can taper conically starting from the first gas nozzle 23 in the direction of the burner cover 9. The first mixing chamber 39 comprises a tubular wall 40 which is constructed rotationally symmetrical to the axis of symmetry M and is received in the receiving section 26 of the nozzle holder 6. The first mixing chamber 39 also has an inflow edge 41 provided on the wall 40.

Furthermore, a second mixing chamber 42 extends from the base section 37 in the direction of the nozzle receiving section 30 of the nozzle holder 6. The second mixing chamber 42 comprises a wall 43 and an inflow edge 44. The inflow edge 44 runs around the wall 43 in a ring. As the Fig. 3 and 4th show, the second mixing chamber 42 is received at least in sections in the nozzle receiving section 30. Here is the second Gas nozzle 31 is positioned outside of the second mixing chamber 42, and the first gas nozzle 23 is positioned outside of the first mixing chamber 39. In particular, the first gas nozzle 23 is arranged at a distance from the inflow edge 41 of the first mixing chamber 39, and the second gas nozzle 31 is positioned at a distance from the inflow edge 44 of the second mixing chamber 42.

In the base section 37 of the burner lower part 7, a plurality of second primary air openings 45 are also provided, which are in fluid connection with the cavity 34 of the nozzle receiving section 30. In particular, the second primary air openings 45 are in fluid communication with the cavity 34 of the nozzle receiving section 30 via the opening 14 of the hob plate 3. That is, the nozzle receiving section 30 can supply primary air P ( Fig. 3 ) are supplied. As the Fig. 2 shows, five such second primary air openings 45 can be provided. However, the number of second primary air openings 45 is arbitrary. In contrast to the first primary air openings 27, 28, the second primary air openings 45 are not positioned below but above the hob plate 3.

A flange 46, which is constructed to be rotationally symmetrical to the axis of symmetry M, extends from the top of the base section 37. The first mixing chamber 39 runs through the flange 46. The flange 46 has a stepped upper edge.

The intermediate element 8 is constructed to be rotationally symmetrical to the axis of symmetry M and comprises a disk-shaped base section 47. In the center of the base section 47, an opening 48 is provided which has a gradation corresponding to the flange 46. The flange 46 of the lower burner part 7 is received in the opening 48. In particular, the flange 46 is supported on the opening 48.

The intermediate element 8 comprises on the top side, that is to say facing the burner cover 9, a multiplicity of channel-shaped first mixture outlet openings 49. The number of first mixture outlet openings 49 is arbitrary. The first mixture outlet openings 49 are preferably arranged distributed uniformly around a circumference of the intermediate element 8. The first mixture outlet openings 49 are part of a first flame circle 50 of the gas burner 2.

On the underside, that is to say assigned to the lower burner part 7, the intermediate element 8 comprises a multiplicity of second mixture outlet openings 51. The number of second mixture outlet openings 51 is arbitrary. The second mixture outlet openings 51 are preferably arranged distributed uniformly over a circumference of the intermediate element 8. The second mixture outlet openings 51 are part of a second flame circle 52 ( Fig. 5 ) of the gas burner 2.

A first mixture distribution chamber 53, to which the first mixture outlet openings 49 are assigned, is provided between the burner cover 9 and the intermediate element 8. A second mixture distribution chamber 54, to which the second mixture outlet openings 51 are assigned, is provided between the intermediate element 8 and the lower burner part 7. The first mixture distribution chamber 53 is not in fluid connection with the second mixture distribution chamber 54. The mixture distribution chambers 53, 54 are separated from one another with the aid of the intermediate element 8. The mixture distribution chambers 53, 54 can, however, also be connected to one another with the aid of an optional opening 55 provided in the base section 47. The first mixture distribution chamber 53 is in fluid communication with the first mixing chamber 39, and the second mixture distribution chamber 54 is in fluid communication with the second mixing chamber 42.

The functionality of the gas burner arrangement 11 or the gas burner 2 is explained below with reference to FIG Fig. 3 explained. As explained above, the gas burner 2 comprises a first flame circuit 50 and a second flame circuit 52. The first flame circuit 50 is assigned to a maximum fire operation of the gas burner 2, for example. The second flame circuit 52 can be suitable for a minimal fire operation of the gas burner 2. In particular, both flame circles 50, 52 can be operated in maximum fire mode. When the gas burner 2 is in operation, the first gas nozzle 23 and the second gas nozzle 31 are supplied with the fuel gas B. The fuel gas B is supplied with the aid of the Fig. 8 bores 24, 36 shown.

The fuel gas B flows out of the first gas nozzle 23 and into the first mixing chamber 39. The primary air P is sucked in laterally through the first primary air openings 27, 28 and flows into the first mixing chamber 39 via the inflow edge 41. The outflowing fuel gas B generates a Venturi effect which sucks in the primary air P from below the hob plate 3 from an interior I of the domestic cooking appliance 1. In the first mixing chamber 39, the fuel gas B is mixed with the primary air P to form a fuel gas / primary air mixture and supplied to the first mixture distribution chamber 53.

From the first mixture distribution chamber 53, the fuel gas / primary air mixture is evenly distributed to the first mixture outlet openings 49 and flows out of these into an area U of the gas burner arrangement 11. When secondary air is supplied, the primary air / fuel gas mixture burns to form a first burner flame.

Similarly, the fuel gas B flows out of the second gas nozzle 31 and into the second mixing chamber 42. Due to the inflowing fuel gas B, primary air P is sucked in from above the hob plate 3 through the second primary air openings 45 and supplied to the nozzle receiving section 30. The primary air P is then sucked in via the inflow edge 44 into the second mixing chamber 42, in which it mixes with the fuel gas B to form the fuel gas / primary air mixture. The fuel gas / primary air mixture is fed from the second mixing chamber 42 to the second mixture distribution chamber 54 and from there distributed to the second mixture outlet openings 51. The fuel gas / primary air mixture then flows out of the gas burner 2 and burns in the surroundings U with the formation of a second burner flame.

Because the second primary air openings 45 suck in the primary air P from above the hob plate 3, i.e. from the environment U, and not like the first primary air openings 27, 28 from below the hob plate 3 or from the interior I of the domestic cooking appliance 1, in particular in Minimal fire operation of the gas burner 2 reliably prevents the gas burner 2 from going out, for example due to pressure surges that can be caused by opening or closing the door 5.

Reference symbols used:

1

Domestic cooking appliance

2

Gas burner

3

Hob plate

4th

Gas control valve

5

door

6th

Nozzle holder

7th

Burner base

8th

Intermediate element

9

Burner cover

10

Burner housing

11

Gas burner arrangement

12th

front

13th

back

14th

breakthrough

15th

Support finger

16

Support finger

17th

Support surface

18th

Receiving section

19th

Receiving section

20th

Receiving section

21

Receiving section

22nd

Base body

23

Gas nozzle

24

drilling

25th

connection

26th

Receiving section

27

Primary air opening

28

Primary air opening

29

flange

30th

Nozzle receiving section

31

Gas nozzle

32

floor

33

Wall

34

cavity

35

Top edge

36

drilling

37

Base section

38

flange

39

Mixing chamber

40

Wall

41

Leading edge

42

Mixing chamber

43

Wall

44

Leading edge

45

Primary air opening

46

flange

47

Base section

48

breakthrough

49

Mixture outlet opening

50

Flame circle

51

Mixture outlet opening

52

Flame circle

53

Mixture distribution chamber

54

Mixture distribution chamber

55

breakthrough

B.

Fuel gas

G

Direction of gravity

I.

inner space

M.

Axis of symmetry

P.

Primary air

U

Surroundings

Claims (13)

1. Gas burner arrangement (11) for a household cooking appliance (1), having a gas burner (2) and a hob plate (3) on which the gas burner (2) is mounted, wherein the gas burner (2) includes a first mixing chamber (39) for mixing combustion gas (B) with primary air (P), a second mixing chamber (42), separate from the first mixing chamber (39), for mixing combustion gas (B) with primary air (P), at least one first primary air opening (27, 28) for supplying primary air (P) to the first mixing chamber (39), and at least one second primary air opening (45) for supplying primary air (P) to the second mixing chamber (42), wherein the at least one first primary air opening (27, 28) is arranged below the hob plate (3) and the at least one second primary air opening (45) is arranged above the hob plate (3), wherein the gas burner (2) includes a nozzle holder (6) and a burner base (7), wherein the hob plate (3) is arranged between the nozzle holder (6) and the burner base (7), characterised in that the at least one second primary air opening (45) is guided through the burner base (7).
2. Gas burner arrangement according to claim 1, characterised in that the first mixing chamber (39) and the second mixing chamber (42) extend through the hob plate (3).
3. Gas burner arrangement according to claim 1 or 2, characterised in that the first mixing chamber (39) and the second mixing chamber (42) are provided in the burner base (7).
4. Gas burner arrangement according to one of claims 1 to 3, characterised in that a first gas nozzle (23) for injecting the combustion gas (B) into the first mixing chamber (39), and a second gas nozzle (31) for injecting the combustion gas (B) into the second mixing chamber (42) are received in the nozzle holder (6).
5. Gas burner arrangement according to claim 4, characterised in that the first gas nozzle (23) is arranged at a spacing from an inflow edge (41) of the first mixing chamber (39), and the second gas nozzle (31) is arranged at a spacing from an inflow edge (44) of the second mixing chamber (42).
6. Gas burner arrangement according to claim 4 or 5, characterised in that the nozzle holder (6) includes a pot-shaped nozzle receiving portion (30) in which the second gas nozzle (31) is received.
7. Gas burner arrangement according to claim 6, characterised in that the second mixing chamber (42) is at least in certain regions received in the nozzle receiving portion (30).
8. Gas burner arrangement according to one of claims 1 - 7, characterised in that the at least one first primary air opening (27, 28) is guided through the nozzle holder (6).
9. Gas burner arrangement according to one of claims 1 - 8, characterised in that the gas burner (2) includes a first mixture distribution chamber (53) that is in fluidic connection with the first mixing chamber (39), and a second mixture distribution chamber (54), separate from the first mixture distribution chamber (53), that is in fluidic connection with the second mixing chamber (42).
10. Gas burner arrangement according to claim 9, characterised in that the gas burner (2) includes a burner lid (9) and an intermediate element (8) that is arranged between the burner lid (9) and the burner base (7).
11. Gas burner arrangement according to claim 10, characterised in that the first mixture distribution chamber (53) is arranged between the burner lid (9) and the intermediate element (8), and the second mixture distribution chamber (54) is arranged between the intermediate element (8) and the burner base (7).
12. Gas burner arrangement according to claim 10 or 11, characterised in that the intermediate element (8) includes a plurality of first mixture outlet openings (49) that are associated with the first mixture distribution chamber (53), and a plurality of second mixture outlet openings (51) that are associated with the second mixture distribution chamber (54).
13. Household cooking appliance (1), in particular a gas cooker, having a gas burner arrangement (11) according to one of claims 1 - 12.

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