Distribution section for gas burner
By designing a slender channel in the gas burner as the distribution inlet for the gas mixture, the problem of uneven flame size in the non-circular burner is solved, and the improvement of flame distribution and uniformity of energy output is achieved.
Patent Information
- Application Number
- CN202380039382.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-05-09
- Filing Date
- 2023-05-09
- Publication Date
- 2024-12-20
AI Technical Summary
In the non-circular burners, the flame size is uneven, especially in star or rectangular burners, which leads to uneven distribution of flames and affects the cooking effect.
A distribution part of a gas burner is designed, including an outer wall, a bottom wall and a partition wall, forming a distribution chamber, with multiple outlet ports on the outer wall, and an elongated channel following the shape of the outer wall as a distribution inlet to ensure that The flow path of the gas mixture is vertically oriented, thus balancing the volume flow rate between outlet ports to form a uniform flame distribution.
Through the design of the elongated channel, the unevenness of the flow path is reduced, the flame distribution is improved, and the uniformity and energy output of all flame lines on the burner are ensured, which is suitable for non-circular cooking utensils.
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Figure CN119173722A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a distribution part of a gas burner for a gas stove, the distribution part having at least an outer wall, a bottom wall and a partition wall, which together define a distribution chamber, wherein the outer wall is pierced with a plurality of outlet ports associated with an outer crown, the partition wall fluidically separates the distribution chamber from a space in the partition wall associated with an inner crown, and the bottom wall is pierced with a distribution inlet leading to the distribution chamber.
[0002] Furthermore, the invention relates to a gas burner for a gas cooker having such a dispensing section. Background Art
[0003] There are gas burners, in particular gas burners for gas stoves, which have an inner crown and an outer crown. The two crowns are usually of different lengths. The outlet ports are usually more or less equidistant. Therefore, the two crowns usually differ in the number of outlet ports. In order to achieve a uniform flame size over the entire gas burner, the crowns are usually supplied with a burning gas mixture from separate corresponding nozzles via separate ducts and chambers.
[0004] The problem that arises is that the flame size within one crown may be different. This occurs in particular if the burner is not circular, such as a star burner, a rectangular burner, etc. Summary of the invention
[0005] It is an object of the present invention to provide a gas burner or a part for a gas burner having an improved flame distribution.
[0006] Therefore, a distribution part of a gas burner for a gas stove is provided. The distribution part has at least an outer wall, a bottom wall and a partition wall, which together define a distribution chamber, wherein the outer wall is pierced with a plurality of outlet ports associated with an outer crown, the partition wall fluidly separates the distribution chamber from a space within the partition wall associated with an inner crown, and the bottom wall is pierced with a distribution inlet leading to the distribution chamber, wherein the distribution inlet is at least one elongated channel following the shape of the outer wall.
[0007] In a typical distribution section, the inlet channel is located near the center of the distribution section and / or near a dividing wall.Then, the gas or gas mixture flowing into the distribution chamber is distributed more or less unevenly on its way from the center to the outer wall.
[0008] In contrast, in the distribution part according to the invention, the gas or gas mixture is mainly distributed in one or more elongated channels forming the distribution inlet. Since the at least one elongated channel follows the shape of the outer wall, the corresponding flow path from the distribution inlet to the outlet port is mainly vertically oriented. In other words, the difference in flow length due to different distances from the common distribution inlet is eliminated. Therefore, the volume flow rate between the outlet ports is balanced. This leads to an improved flame distribution.
[0009] The term "outlet ports associated with the outer crown" relates in particular to outlet ports which are arranged such that the flame of the gas or gas mixture flowing out of those outlet ports forms an outer flame line of two (or more) flame lines.
[0010] The term "space associated with the inner crown" relates in particular to a space within which a further distribution chamber and / or distribution portion etc. is arranged or can be arranged such that the flame emerging therefrom forms an inner flame line of two (or more) flame lines.
[0011] Gravity-related terms such as "upper", "top", "lower", "below", "bottom" etc. refer to the preferred use and / or orientation of the dispensing part in a gas cooker, wherein cooking utensils (such as pots) can preferably be located above the dispensing part.
[0012] According to one embodiment, the at least one elongated channel follows the shape of at least the outer wall where the plurality of outlet ports are located. The corresponding flow path of this embodiment is particularly short. This can reduce flow losses.
[0013] According to another embodiment, the outer wall has a polygonal shape, in particular a star shape. A polygonal outer wall is distinguished from a circular outer wall. The term "polygonal shape" refers in particular to the plan view towards the upper side or top side of the bottom wall. The polygonal outer wall may be suitable for non-circular cooking utensils, such as a type of casserole. The polygonal outer wall may widen or thicken the flame zone, thereby producing a uniform cooking in the corresponding cooking utensil. The polygonal outer wall may widen or thicken the flame zone, thereby producing a higher energy output.
[0014] According to another embodiment, the at least one elongated channel follows at least 75% of the inner length of the outer wall where the plurality of outlet ports are located. It may not always be possible to follow one or more complete sections of the outer wall where the outlet ports are located. This situation may include narrow corners and / or other design space limitations. However, for improved flame characteristics, it is generally beneficial that the elongated channel follows one or more sections of the outer wall where the outlet ports are located as much as possible.
[0015] According to another embodiment, the distance between the outside of the elongated channel and the inside of the outer wall is not longer than the lateral width of the elongated channel and / or the thickness of the outer wall and / or the thickness of the diagonal wall. For example, the distance can be measured in the diagonal wall top surface plane from the edge of the outside of the elongated channel to the edge of the inside of the outer wall. This embodiment provides a short distance between the elongated channel and the outer wall. This short distance can reduce the flow loss between the elongated channel and the outlet port. The lower these losses are, the lower the difference between the corresponding flow paths is, thereby balancing the corresponding flames.
[0016] According to another embodiment, the width and / or depth of the elongated channel is greater than the distance between the outside of the elongated channel and the inside of the outer wall and / or the thickness of the outer wall and / or the thickness of the bottom wall. This embodiment provides the short distance between the elongated channel and the outer wall. If the depth of the elongated channel is not greater than the thickness of the bottom wall, the elongated channel can be at least partially formed into a groove. If the depth of the elongated channel is greater than the thickness of the bottom wall, the elongated channel can be at least partially formed into a conduit, especially a conduit leading to another chamber. This width and / or depth can reduce the flow losses in the distribution inlet. The lower these losses are, the lower the difference between the corresponding flow paths along the elongated channel is, thereby balancing the corresponding flames.
[0017] According to another embodiment, the outside of the elongated channel is flush with the junction between the outer wall and the bottom wall and / or with the inner side of the outer wall. This embodiment provides a particularly short and smooth corresponding flow path from the distribution inlet to the outlet port. The junction can be a transition between the outer wall and the bottom wall. The junction can be chamfered and / or rounded. This embodiment supports a balanced flame.
[0018] According to another embodiment, the elongated channel is parallel to the inner side of the outer wall and / or inclined towards the inner side of the outer wall. Thus, the gas or gas mixture flow from the distribution inlet can be directed to the corresponding outlet port. Therefore, the flow loss difference is further reduced.
[0019] According to another embodiment, the outlet port extends downward from the top side of the outer wall to half or less than half of the height of the inner side of the outer wall. In other words, the outlet port extends downward from the top side of the outer wall by at least 50% of the distance and / or vertical difference from the top side of the outer wall to the top side of the bottom wall. This embodiment facilitates the flow of gas or gas mixture into the outlet port. The inner side height can be measured along the inner side of the outer wall from the bottom wall top surface plane of the distribution part to the outer wall top surface plane and / or the top wall bottom surface plane of the top wall.
[0020] According to another embodiment, the bottom surface of the outlet port is inclined, with its lower edge located at the inner side of the outer wall, and its higher edge located at the outer side of the outer wall.Therefore, the flow loss difference between the outlet ports can be further reduced.
[0021] According to another embodiment, the corresponding outlet axis of one of the outlet ports rotates from the thickness direction of the corresponding section of the outer wall toward or toward the radial direction of the distribution part. According to another embodiment, the corresponding outlet axis of a plurality of outlet ports rotates from the thickness direction of the corresponding section of the outer wall toward or toward the radial direction of the distribution part. According to another embodiment, the corresponding outlet axis of each outlet port rotates from the thickness direction of the corresponding section of the outer wall toward or toward the radial direction of the distribution part. The thickness direction of the outer wall may vary locally. The thickness direction of the outer wall may be the direction of the shortest distance from a specific point along the inner or outer side of the outer wall to the outer or inner side of the outer wall. The radial direction of the distribution part may be the direction from the center of the distribution part to a specific point along the inner or outer side of the outer wall. The center of the distribution part may and usually will be in the space within the partition wall. The outlet axis of the outlet port may be a line centered between the two sides of the outlet port. These three embodiments are particularly combinable. The common point of these three embodiments is that the outlet axis is at least roughly oriented toward the center of the distribution part. This leads to a further reduction in the difference in flow loss between the outlet ports. However, these embodiments do not necessarily require that the outlet axis or each outlet axis is consistent with the radial direction. In addition, the outlet axis can be oriented in the thickness direction and the radial direction at the same time. In other words, these embodiments are particularly beneficial in non-circumferentially oriented sections of the outer wall. Terms such as "thickness", "radial" and / or "circumferential" can be considered in a plan view towards the top surface of the bottom wall.
[0022] According to another embodiment, the mixing chamber is located below the bottom wall of the distribution chamber. The mixing chamber can provide a more evenly mixed gas mixture. In this embodiment, the bottom wall of the distribution chamber can optionally separate the distribution chamber and the mixing chamber, and / or the inlet channel leading to the distribution chamber can optionally fluidly connect the distribution chamber and the mixing chamber. In other words, the mixing chamber can supply the gas or gas mixture to the distribution inlet. As another option, the distribution chamber and the mixing chamber can be formed in one piece. Preferably, the outer wall of the distribution chamber, the outer wall of the mixing chamber, the bottom wall of the mixing chamber, the inner wall of the mixing chamber and the partition wall of the distribution chamber can be formed in one piece, thereby providing a rigid distribution part.
[0023] According to another embodiment, the bottom wall of the distribution chamber is a separately formed insert. A preferred variant of this embodiment comprises a sheet metal part or a cast part. According to a preferred variant of this embodiment, the depth of the elongated channel measures at least 75%, preferably 125%, of the thickness of the nearest outlet wall. Thus, a gas burner, in particular a gas burner with a low flow loss differential, can be easily installed.
[0024] According to another embodiment, the bottom wall of the distribution chamber is formed integrally with the outer wall and the partition wall.Therefore, there are fewer parts to be assembled together.
[0025] According to another embodiment, the dividing wall is adapted to at least partially surround a further distribution part associated with the inner crown, which further distribution part may be located in a space within the dividing wall.Thus, the distribution part may be part of a modular gas burner system.
[0026] According to another embodiment, the distribution part also has an inner bottom wall and an inner wall, wherein the distribution chamber is an outer distribution chamber that at least partially surrounds the inner distribution chamber, and the inner distribution chamber is limited by a partition wall, an inner bottom wall and an inner wall. That is, the distribution part may include at least two nested distribution chambers. Each distribution chamber may be dedicated to a crown. In this embodiment, the inner bottom wall may be penetrated with a corresponding distribution inlet leading to the inner distribution chamber. Therefore, the supply to the two distribution chambers can be arranged in parallel. In addition, in this embodiment, the inner wall may be penetrated with a plurality of outlet ports associated with the inner crown. Therefore, a similar structure for the inner crown can provide a similar flame. Preferably, the partition wall separates the outer distribution chamber from the inner distribution chamber fluid. Therefore, the airflow entering the distribution chamber is independently adjustable.
[0027] As another solution to the above-mentioned purpose, a gas burner for a gas stove is proposed, wherein the gas burner has a distribution part according to an embodiment of the present specification.
[0028] The terms "distribution chamber" and "mixing chamber" are chosen for easy distinction. However, they are generally not exclusive, i.e. there is no gas mixing in the distribution chamber, nor is there no gas distribution in the mixing chamber.
[0029] Other possible implementations or alternative solutions of the present invention also include combinations of features described above or below with respect to the embodiments (not explicitly mentioned herein). Those skilled in the art can also add separate or isolated aspects and features to the most basic form of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Further embodiments, features and advantages of the present invention will become apparent from the following description and the dependent claims, taken in conjunction with the accompanying drawings, in which:
[0031] Figure 1 A schematic top view of an embodiment of a gas stove is shown;
[0032] Figure 2 Shown is the Figure 1 A perspective exploded cross-sectional view of an embodiment of a gas burner of a gas stove;
[0033] Figure 3 Shown according to Figure 2 A perspective view of an embodiment of a distribution portion of a gas burner; and
[0034] Figure 4 Another perspective view shows Figure 3 allocation part.
[0035] In the drawings, like reference numbers indicate identical or functionally equivalent elements unless otherwise indicated. DETAILED DESCRIPTION
[0036] Figure 1 1 shows a schematic top view of an embodiment of a gas cooker or gas stove 1. The gas stove 1 may be a household appliance or a part of a household appliance. The gas stove 1 comprises a plurality of gas burners 2 to 5. The number of gas burners 2 to 5 is arbitrary. Figure 1 As shown, four gas burners 2 to 5 can be provided. The gas burners 2 to 5 protrude beyond the top plate 6 of the gas cooker 1. The top plate 6 can be a glass or glass ceramic plate. However, the top plate 6 can also be a steel plate.
[0037] The gas stove 1 has a plurality of knobs 7 to 10. Each knob 7 to 10 belongs to a gas valve (not shown). The number of knobs 7 to 10 is the same as the number of gas burners 2 to 5. Each knob 7 to 10 is assigned to a gas burner 2 to 5. By means of the knobs 7 to 10, the combustion gas flow from the main gas pipe to the assigned gas burners 2 to 5 can be controlled continuously or stepwise.
[0038] In addition, the gas stove 1 is optionally provided with a pot supporting structure (not shown) for bearing the weight of cooking utensils ultimately placed on the corresponding gas stoves 2 to 5 .
[0039] Steering Figures 2 to 4 , the following description relates only to the gas burner 2. However, the given description and features are applicable to each gas burner 2 to 5 mutatis mutandis.
[0040] The gas burner 2 has, for example, a holder assembly 11 , a burner base 12 , a distribution portion 13 and a cover 14 .
[0041] The holder assembly 11 comprises, for example, two nozzle-venturi arrangements 15. Each nozzle-venturi arrangement 15 comprises a (not shown) gas nozzle connected to a (not shown) gas pipe from a (not shown) gas valve corresponding to the knob 7. The two gas nozzles are arranged to inject burner gas into respective venturi tubes 16a and 16b. Each venturi tube 16a, 16b is connected to a respective port of a common holder part 17 in a gas-tight manner.
[0042] In this case, two ducts 18 a and 18 b are formed inside the holder portion 17 .
[0043] In this embodiment, the burner base 12 is a single part comprising two mixing chambers 19a and 19b. Each mixing chamber 19a and 19b has a respective mixing inlet 20a and 20b.
[0044] The holder portion 17 and the burner base 12 are formed such that the burner base 12 fits onto the holder portion 17 , preferably such that a gas-tight fluid communication is formed between each of the ducts 18a , 18b and a respective one of the mixing inlets 20a , 20b .
[0045] In this embodiment, the distribution portion 13 is arranged in an airtight manner and preferably fits on top of the burner base 12. The distribution portion 13 may be referred to as a diffuser or a diffusion portion.
[0046] The dispensing portion 13 has an outer wall 21, an outer bottom wall 22 and a partition wall 23. The outer wall 21, the outer bottom wall 22 and the partition wall 23 surround and together define an outer dispensing chamber 24. The outer dispensing chamber 24 is further surrounded and closed by a section of the cover 14.
[0047] A plurality of external outlet ports 25 are arranged in the outer wall 21. For example, these external outlet ports 25 are formed as notches or slits. The notches protrude downwardly from the top side 26 or upper surface of the outer wall 21 towards the top side 27 or upper surface of the bottom wall 22.
[0048] Figure 3 It is shown that on the outer side 28 or upper surface of the outer wall 21, the outer outlet ports 25 extend downwardly about 50% of the distance from the top side 26 of the outer wall 21 to the top side 27 of the bottom wall 22. In addition, on the inner side 29 or surface of the outer wall 21, the outer outlet ports 25 extend downwardly more than 75% of the distance from the top side 26 of the outer wall 21 to the top side 27 of the bottom wall 22. Thus, the bottom surface 42 of each outlet port slopes upwardly from the inner side of the outer dispensing chamber 24 to the outer side thereof.
[0049] Steering Figure 4 , the outer wall 21 has a polygonal shape when viewed in a plan view toward the top side 27 of the outer bottom wall 22. In the exemplary case of the first embodiment, the outer wall 21 has a star shape with five arms.
[0050] Furthermore, an outer dispensing inlet 30 is provided in the outer bottom wall 22. The outer dispensing inlet 30 connects the corresponding mixing chamber 19a with the outer dispensing chamber 24.
[0051] In operation, the gas injected from the corresponding nozzle is mixed with air and passes through the venturi 16a, the duct 18a, the mixing inlet 20a, the mixing chamber 19a, the outer distribution inlet 30, the outer distribution chamber 24 and the outer outlet port 25 in this order, all of which are in fluid communication with each other. Then, in operation, the gas mixture is burned outside the outer outlet port 25 forming the outer crown 31.
[0052] The outer dispensing inlet 30 has the form of an elongated channel 32. In the exemplary case of the first embodiment, the dispensing inlet 30 is a single elongated channel 32. However, there are variants in which a plurality of elongated channels 32 forming the outer dispensing inlet 30 are provided.
[0053] In the exemplary case of the first embodiment, the elongated channel 32 extends along its entire length through the outer bottom wall 22. However, there are variants in which the elongated channel 32 is formed as or comprises at least one groove or groove section.
[0054] The elongated channel 32 has an outer side 33 or surface. In the exemplary case of the first embodiment, the outer side 33 of the elongated channel 32 is flush with the inner side 29 of the outer wall 21 along almost the entire length of the elongated channel 32, except for its two terminal ends 46. That is, when viewed in said plan view toward the top side 27 of the outer bottom wall 22, the elongated channel 32 also has a star shape with five arms.
[0055] Since the elongated channels 32 repeat the shape of the outer wall 21 radially inwardly of the inner side 29 of the outer wall 21 in a partially parallel manner, the elongated channels 32 follow the shape of the outer wall 21. Therefore, in operation, the gas mixture flow from the outer distribution inlet 30 toward the outer outlet port 25 is not horizontal, but at least substantially vertical. In other words, the outer outlet port 25 flows vertically against the elongated channels 32 and / or is filled vertically from the elongated channels 32. When the flow behavior on all the outer outlet ports 25 is compared, this vertical flow leads to a well-balanced filling of the outer outlet port 25. That is, in the end, improved flame characteristics are achieved by the elongated channels 32 that follow the shape of the outer wall 21.
[0056] Since the inner side 29 of the outer wall 21 and the outer side 33 of the elongated channel 32 are parallel to each other, in operation a flow of the gas mixture is produced from the elongated channel 32 upwards along the outer wall 21. This effect supports said vertical filling of the outer outlet port 25.
[0057] The dividing wall 23 is a solid wall which fluidly separates the outer distribution chamber 24 from the space 34 or compartment enclosed by the dividing wall 23 .
[0058] In the case of the first embodiment, the dispensing portion 13 also has an inner bottom wall 35 and an inner wall 36. The partition wall 23, the inner bottom wall 35 and the inner wall 36 surround and together define an inner dispensing chamber 37. The inner dispensing chamber 37 is also surrounded and closed by a section of the cover 14.
[0059] In other words, in the exemplary case of the first embodiment, the space 34 is at least partially occupied or used by the inner distribution chamber 37 .
[0060] The inner dispensing chamber 37 has an inner dispensing inlet 38 formed by two through holes 39. The through holes 39 extend through the inner bottom wall 36.
[0061] The outlet ports from the inner distribution chamber 37 are formed by a plurality of inner outlet ports 40 provided in the inner wall 36. The inner outlet ports 40 are also formed as recesses.
[0062] In operation, the gas ejected from the corresponding nozzle is mixed with air and passes through another venturi 16b, another conduit 18b, another mixing inlet 20b, another mixing chamber 19b, an inner distribution inlet 38, an inner distribution chamber 37 and an inner outlet port 40, all of which are in fluid communication with each other. Then, in operation, the gas mixture is burned outside the inner outlet port 40 forming the inner crown 41.
[0063] Figure 4 An exemplary outlet axis 43 of one of the outer outlet ports 25 is shown, as well as a thickness direction 44 of the section of the outer wall 21 and a radial direction 45 of the same section of the outer wall 21. Figure 4 As can be seen in FIG. 4 , the outlet axis 43 is located between the thickness direction 44 and the radial direction 45 . Therefore, the flow of the gas or gas mixture is more balanced between the plurality of outer outlet ports 25 .
[0064] The above embodiments reflect Figures 1 to 4 The preferred embodiment shown. However, there are other embodiments not depicted in the figures.
[0065] For example, the inner dispensing chamber 37 is not necessarily a part of the dispensing portion 13. That is, the space 34 can also be used and / or available by a component formed separately from the dispensing portion 13.
[0066] For example, the holder portion 17, the burner base 12 and the distribution portion 13 do not necessarily have to be provided as three separately formed parts. In an alternative embodiment, the holder portion 17 and the burner base 1 are formed integrally. In another alternative embodiment, the burner base 12 and the distribution portion 13 are formed integrally. In another alternative embodiment, the holder portion 17, the burner base 12 and the distribution portion 13 are formed integrally. In particular, in embodiments in which the burner base 12 and the distribution portion 13 are formed integrally, at least one of the bottom walls 22, 35 can be formed separately and subsequently inserted.
[0067] For example, a "portion" or the like may be an individual or separately formed section, part, and / or an arrangement of a plurality of arrangements.
[0068] Although the invention has been described in terms of preferred embodiments, it will be apparent to those skilled in the art that modifications are possible in all embodiments.
[0069] Reference numerals:
[0070] 1 Gas stove
[0071] 2 gas burners
[0072] 3 Gas Burners
[0073] 4 gas burners
[0074] 5 Gas Burners
[0075] 6 Top Plate
[0076] 7 Knobs
[0077] 8 Knobs
[0078] 9 Knobs
[0079] 10 Knobs
[0080] 11Retainer assembly
[0081] 12 Burner Base
[0082] 13. Allocation section
[0083] 14 Cover
[0084] 15 Nozzle-Venturi Arrangement
[0085] 16a Venturi tube
[0086] 16b Venturi tube
[0087] 17 Retainer part
[0088] 18a catheter
[0089] 18b catheter
[0090] 19a Mixing chamber
[0091] 19b Mixing chamber
[0092] 20a Mixed inlet
[0093] 20b mixed entrance
[0094] 21 outer wall
[0095] 22 Outer bottom wall
[0096] 23 Separation Wall
[0097] 24 external distribution chamber
[0098] 25 external export ports
[0099] 26 Top side
[0100] 27 Top side
[0101] 28 Outer side
[0102] 29 Inside
[0103] 30 external assigned entrance
[0104] 31 Outer crown
[0105] 32 Slim Channel
[0106] 33 Outer side
[0107] 34 Space
[0108] 35 inner bottom wall
[0109] 36 Inner wall
[0110] 37 Inner distribution chamber
[0111] 38 Internal distribution entrance
[0112] 39 through holes
[0113] 40 internal exit port
[0114] 41 inner crown
[0115] 42 bottom surface
[0116] 43 Exit axis
[0117] 44thickness direction
[0118] 45 radial direction
[0119] 46Terminal
Claims
1. A distribution part (13) of a gas burner (2, 3, 4, 5) for a gas cooker (1), the distribution part (13) having at least an outer wall (21), a bottom wall (22) and a partition wall (23), which together define a distribution chamber (24), wherein: The outer wall (21) is pierced by a plurality of outlet ports (25) associated with an outer crown (31), The partition wall (23) fluidically separates the distribution chamber (24) from a space (34) in the partition wall (23) associated with the inner crown (41), and the bottom wall (22) is penetrated by a distribution inlet (30) leading to the distribution chamber (24), characterized in that The dispensing inlet (30) is at least one elongated channel (32) following the shape of the outer wall (21).
2. The dispensing portion (13) according to claim 1, wherein The at least one elongated channel (32) follows the shape of the outer wall (21) where at least a plurality of the outlet ports (25) are located.
3. The dispensing portion (13) according to claim 1 or 2, wherein: The outer wall (21) has a polygonal shape, in particular a star shape.
4. The dispensing portion (13) according to any one of claims 1 to 3, wherein: The at least one elongated channel (32) follows at least 75% of the length of the inner side (29) of the outer wall (21) where the plurality of outlet ports (25) are located.
5. The dispensing portion (13) according to any one of claims 1 to 4, wherein: The distance between the outer side (33) of the elongated channel (32) and the inner side (29) of the outer wall (21) is not longer than the transverse width of the elongated channel (32) and / or the thickness of the outer wall (21) and / or the thickness of the bottom wall (22).
6. The dispensing portion (13) according to any one of claims 1 to 5, wherein: The outer side (33) of the elongated channel (32) is flush with the junction between the outer wall (21) and the bottom wall (22) and / or with the inner side (29) of the outer wall (21).
7. A dispensing portion (13) according to any one of claims 1 to 6, wherein: The elongated channel (32) is oriented parallel to the inner side (29) of the outer wall (21) and / or is inclined towards the inner side (29).
8. A dispensing portion (13) according to any one of claims 1 to 7, wherein: The outlet port (25) extends downwardly from the top side (26) of the outer wall (21) for at least 50% of the distance from the top side (26) of the outer wall (21) to the top side (27) of the bottom wall (22).
9. A dispensing portion (13) according to any one of claims 1 to 8, wherein: The bottom surface (42) of the outlet port (25) is inclined, wherein its lower edge is located at the inner side (29) of the outer wall (21) and its upper edge is located at the outer side (28) of the outer wall (21).
10. A dispensing portion (13) according to any one of claims 1 to 9, wherein - a respective outlet axis (43) of one of the outlet ports (25), and / or - respective outlet axes (43) of the plurality of outlet ports (25), and / or The respective outlet axis (43) of each outlet port (25) is rotated from the thickness direction (44) of the respective section of the outer wall (21) towards or towards the radial direction (45) of the dispensing portion (13).
11. A dispensing portion (13) according to any one of claims 1 to 10, in, The mixing chambers (19a, 19b) are located below the bottom wall (22) of the distribution chamber (24). wherein the bottom wall (22) of the distribution chamber (24) separates the distribution chamber (24) from the mixing chambers (19a, 19b), and A dispensing inlet (30) leading to the dispensing chamber (24) fluidly connects the dispensing chamber (24) and the mixing chamber (19a).
12. The dispensing portion (13) according to claim 11, wherein The distribution chamber (24) and the mixing chamber (19a) are formed integrally.
13. A dispensing portion (13) according to any one of claims 1 to 12, wherein: The bottom wall (22) of the dispensing chamber (24) is a separately formed insert.
14. A dispensing portion (13) according to any one of claims 1 to 12, wherein: The bottom wall (22) of the distribution chamber (24) is formed integrally with the outer wall (21) and the partition wall (23).
15. A dispensing portion (13) according to any one of claims 1 to 14, It also has an inner bottom wall (35) and an inner wall (36), wherein: The distribution chamber (24) is an outer distribution chamber (24) at least partially surrounding an inner distribution chamber (37), wherein the inner distribution chamber (37) is defined by a partition wall (23), an inner bottom wall (35) and an inner wall (36), The inner bottom wall (36) is pierced with a respective dispensing inlet (38) leading to an inner dispensing chamber (37), and The inner wall (36) is pierced with a plurality of outlet ports (40) associated with the inner crown (41).
16. A gas burner (2, 3, 4, 5) for a gas cooker (1) having a dispensing portion (13) according to any one of claims 1 to 15.
