Multi-flame profile burner and cooktop comprising the same

Abstract

The utility model belongs to kitchen electrical equipment technical field, concretely provides a kind of multi-flame mode's combustor and the stove comprising it, multi-flame mode's combustor in it includes fire cover subassembly, the fire cover subassembly is formed with outer ring gas mixing cavity group and inner ring gas mixing cavity, the outer ring gas mixing cavity group includes multiple outer ring gas mixing cavities;Wherein, the fire cover subassembly includes outer ring area and inner ring area, the inner ring gas mixing cavity is formed in the inner ring area, the outer ring area includes first ring area and the second ring area in the radial inner side of first ring area, part of the multiple outer ring gas mixing cavities is formed in the first ring area, another part of the multiple outer ring gas mixing cavities is formed in the second ring area.Through such constitution, by multiple outer ring gas mixing cavities in outer ring gas mixing cavity group being placed in the outer ring area including double-ring structure, it is expected to produce more abundant flame mode by the combination of multiple outer ring gas mixing cavities.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, specifically to a multi-flame burner and a stove containing the burner. Background Technology

[0002] A cooktop typically includes one or more burners (such as two or three), which provide heat to a pot placed on it, enabling cooking methods such as stewing, stir-frying, and deep-frying. The burner is equipped with a gas supply assembly, which primarily supplies gas to the burner. Specifically, after the gas supply assembly delivers gas to the nozzle, the nozzle injects the gas into the injection channel, allowing the gas to mix with air. The ignition pin on the burner then ignites the gas-air mixture in the mixing chamber, producing a flame that provides heat to the pot. The gas supply assembly usually includes control valves, such as proportional valves, to adjust the burner's on / off status and heat level.

[0003] Currently, cooktops typically employ a dual-ring burner structure. For each ring, the mixing chamber is usually uniform, resulting in a relatively limited range of flame patterns. There is still room for improvement in cooktop design to enable burners to produce a wider variety of flame patterns to better suit users' cooking needs. Utility Model Content

[0004] The present invention aims to solve at least part of the above-mentioned technical problems and / or solve at least part of the above-mentioned technical problems, specifically, how to enable the burner of the stove to produce richer flame patterns.

[0005] In a first aspect, the present invention provides a multi-flame burner, the burner comprising a flame cap assembly having an outer annular mixing chamber group and an inner annular mixing chamber, the outer annular mixing chamber group comprising a plurality of outer annular mixing chambers; wherein, the flame cap assembly comprises an outer annular region and an inner annular region, the inner annular mixing chamber being formed in the inner annular region, the outer annular region comprising a first annular region and a second annular region located radially inside the first annular region, a portion of the plurality of outer annular mixing chambers being formed in the first annular region, and another portion of the plurality of outer annular mixing chambers being formed in the second annular region.

[0006] With this configuration, by placing multiple outer ring mixing chambers in the outer ring mixing chamber group within the outer ring region including the double-ring structure, it is expected that a richer variety of flame patterns can be generated through the combination of multiple outer ring mixing chambers.

[0007] It is understood that those skilled in the art can determine the specifications (such as radial width, depth, etc.) and relative positions between the first and second annular regions according to actual needs. For example, the first and second annular regions may be structures that directly divide the outer annular region into two via structures such as a gas separator ring, thereby making the two closely spaced, or the first and second annular regions may be two independent annular regions with a radial gap between them (such as providing a spacer annular region without a mixing chamber).

[0008] Furthermore, it is understood that those skilled in the art can determine the specific number of outer annular mixing chambers and their distribution in the first / second annular region according to actual needs. For example, in terms of number, multiple outer annular mixing chambers can be evenly or unevenly distributed in the first / second annular region, and the outer annular mixing chambers distributed in the first / second annular region can include one or more. Structurally, on the one hand, the structural form and relative position of the two sets of outer annular mixing chambers distributed in the first / second annular region can be flexibly selected; on the other hand, for outer annular mixing chambers located in the same annular region (taking multiple as an example), the structural form and relative position of the outer annular mixing chambers can also be flexibly selected. For example, the structural forms (such as circumferential dimensions) of the outer ring mixing chambers located in the same / different ring areas can be the same or different. Adjacent outer ring mixing chambers located in the same ring area can be closely arranged or spaced apart. Outer ring mixing chambers located in different ring areas that are roughly corresponding in position can be roughly aligned or staggered along the circumferential direction. For example, staggered distribution can include, but is not limited to, two outer ring mixing chambers overlapping in the circumferential direction (such as their projections on the side wall of the flame cap assembly being roughly aligned, one completely covering the other), partially overlapping, or being completely staggered along the circumferential direction.

[0009] In one possible implementation of the burner described above, the burner cap assembly includes a first gas distribution structure, which is an annular structure, and the outer annular region is divided by the first gas distribution structure to form a first annular region and a second annular region.

[0010] This configuration provides a possible way for the first / second ring region to be formed.

[0011] It should be understood that the ring structure here should be understood as a roughly ring structure. For example, the radial thickness, circumferential height, and local fine structures of the first partition structure can be flexibly selected according to actual needs. For example, the thickness of different parts along the circumference can be different. It can be a ring or a ring-like structure. For example, the ring may have facets, serrations, or other structures processed in some parts.

[0012] In one possible implementation of the burner described above, the plurality of outer annular mixing chambers include four, two of which are circumferentially disposed in the first annular region, and the other two of which are circumferentially disposed in the second annular region.

[0013] With this configuration, the burner can produce a variety of flame patterns by combining the four outer annular mixing chambers in a way that includes multiple chambers in both the radial and circumferential directions.

[0014] Specifically, the two outer ring mixing chambers located in the same ring area can be located in all or part of the ring area. For example, the ring area includes four equally divided sections, and two of the sections separated by a gap are used as outer ring mixing chambers.

[0015] In one possible implementation of the burner described above, the outer annular mixing chamber formed in the second annular region overlaps circumferentially with at least one of the two outer annular mixing chambers formed in the first annular region.

[0016] This configuration allows for an overlapping combination of outer annular mixing chambers located in different annular zones along the circumference, potentially resulting in more diverse flame patterns in the burner. Taking a pair of overlapping outer annular mixing chambers as an example, the central angles corresponding to the two outer annular mixing chambers can be the same or different, and they can completely or partially overlap. In the case of partial overlap, the ratio between the overlapping and non-overlapping portions of the two outer annular mixing chambers can be flexibly adjusted. For example, the central angle of the outer annular mixing chamber formed in the second annular zone is 180°, the central angle of the outer annular mixing chamber formed in the first annular zone is 120°, and the central angle of the overlapping portion between them is 90°.

[0017] In one possible implementation of the burner described above, the burner cap assembly includes a second gas distribution structure, wherein the first annular region and the second annular region are respectively divided by the second gas distribution structure into two circumferentially distributed outer annular mixing chambers.

[0018] With this configuration, it is possible to form an outer ring mixing chamber in the first / second ring zone through a second gas distribution structure such as a gas separator or a gas separator block.

[0019] It is understandable that, taking the two outer annular mixing chambers located in any one annular region as an example, they can be combined in the corresponding annular region in a manner that is either equally or unevenly divided. Ignoring the circumferential dimensions of the second gas distribution structure, for example, in the two outer annular mixing chambers formed in the first annular region, one may have a central angle of 90° (the other 270°), or both may have a central angle of 180°, etc.

[0020] In one possible implementation of the burner described above, two outer annular mixing chambers formed in the first annular region are symmetrically arranged; and / or two outer annular mixing chambers formed in the second annular region are symmetrically arranged.

[0021] If we still ignore the volume and structure of the second gas distribution structure itself, the axis of symmetry of the two symmetrically arranged outer ring mixing chambers is roughly the line connecting the two second gas distribution structures in the corresponding ring area.

[0022] In one possible implementation of the burner described above, the two outer annular mixing chambers of the first annular region are arranged approximately symmetrically along a first axis, and the two outer annular mixing chambers of the second annular region are arranged approximately symmetrically along a second axis, wherein the first axis and the second axis are perpendicular to each other.

[0023] For example, both the first and second axes are approximately collinear with the diameter of the flame cap assembly.

[0024] In one possible implementation of the burner described above, the burner includes a burner head assembly, the burner head assembly including: a burner head having a nozzle mounting area; and a nozzle group including a plurality of first nozzles corresponding to the outer annular mixing chamber group and a second nozzle corresponding to the inner annular mixing chamber; wherein the plurality of first nozzles are arranged around the second nozzle.

[0025] In a second aspect, the present invention provides a stove that includes a multi-flame burner as described in any of the preceding claims.

[0026] It is understandable that this stove has all the technical effects of any of the aforementioned burners, and will not be elaborated further here.

[0027] In one possible implementation of the above-mentioned stove, the stove includes an outer ring gas path group and an inner ring gas path. The outer ring gas path group includes multiple outer ring gas paths corresponding to multiple outer ring mixing chambers. Gas can reach the corresponding outer ring mixing chamber through the outer ring gas path, and gas can reach the inner ring mixing chamber through the inner ring gas path. Attached Figure Description

[0028] The present invention will now be described with reference to the accompanying drawings and the four outer ring mixing chambers, which together form four semi-circular ring chambers comprising the outer ring and the middle ring. (See the accompanying drawings.)

[0029] Figure 1 This diagram illustrates the structure (three-dimensional) of a multi-flame burner according to an embodiment of the present invention. Figure 1 ;

[0030] Figure 2 This diagram illustrates the structure (explosion) of a multi-flame burner according to an embodiment of the present invention. Figure 2 ;

[0031] Figure 3 This diagram shows the structure (front view) of a multi-flame burner according to an embodiment of the present invention. Figure 3 ;

[0032] Figure 4 A top view shows the structure (top view) of a multi-flame burner according to an embodiment of the present invention. Figure 4 ;

[0033] Figure 5 An explosion diagram of the burner cap seat in the burner cap assembly of a multi-flame burner according to an embodiment of the present invention is shown.

[0034] Figure 6 This diagram illustrates the structure of the first flame cap seat in a multi-flame burner according to an embodiment of the present invention.

[0035] Figure 7 This diagram shows an explosion of the first flame cap seat in a multi-flame burner according to an embodiment of the present invention.

[0036] Figure 8 This diagram shows a structural schematic of the first flame cap seat portion of the first flame cap seat in a multi-flame burner according to an embodiment of the present invention.

[0037] Figure 9 This diagram illustrates the structure of the second flame cap seat portion of the first flame cap seat in a multi-flame burner according to an embodiment of the present invention. Figure 1 The diagram shows the first guide section;

[0038] Figure 10 This diagram illustrates the structure of the second flame cap seat portion in a flame cap assembly of a multi-flame burner according to an embodiment of the present invention. Figure 2 The diagram shows the second guide section;

[0039] Figure 11 This diagram illustrates the structure of the burner assembly in a multi-flame burner according to an embodiment of the present invention. Figure 1 The figure includes the first flame cap seat (part of the second flame cap seat) and the second flame cap seat;

[0040] Figure 12 This diagram illustrates the structure (three-dimensional) of the burner assembly in a multi-flame burner according to an embodiment of the present invention. Figure 2 ;

[0041] Figure 13 This diagram shows the structure (top view) of the burner assembly in a multi-flame burner according to an embodiment of the present invention. Figure 3 The air path components are shown in the figure with dashed lines;

[0042] Figure 14 This diagram illustrates the structure of the burner assembly in a multi-flame burner according to an embodiment of the present invention. Figure 4 (Cut view); and

[0043] Figure 15 This diagram illustrates the structure of the burner assembly in a multi-flame burner according to an embodiment of the present invention. Figure 5 (Sectional view)

[0044] List of reference numerals in the attached diagram:

[0045] 100. Burner;

[0046] 1. Flame cap assembly;

[0047] 111. First Fire Cover Seat;

[0048] 1111, First flame cap base portion; 1112, Second flame cap base portion; 1113, First connecting structure; 1114, Second connecting structure;

[0049] 101. Outer Ring Road Area;

[0050] 1011, First Ring Zone; 1012, Second Ring Zone; 1013, First Gas Distribution Structure; 1014, Second Gas Distribution Structure;

[0051] 112. Second fire cover seat;

[0052] 1121. Installation structure;

[0053] 102. Inner Ring Road Area;

[0054] 121. First fire cap;

[0055] 122. Second fire cap;

[0056] 13. Protective components;

[0057] 131. First protective structure;

[0058] 132. Second protective structure;

[0059] 133. Protective guidance structure;

[0060] 141. First ejection channel; 142. Second ejection channel;

[0061] 151. Outer annular mixing chamber; 152. Inner annular mixing chamber;

[0062] 16. Flame-out structure;

[0063] 17. Guiding section; 171. First guiding part; 172. Second guiding part; 173. Guiding structure;

[0064] 2. Burner assembly;

[0065] 21. Stove head;

[0066] 211. Nozzle mounting area; 212. First channel substrate; 213. Second channel substrate;

[0067] 221. First nozzle; 222. Second nozzle;

[0068] 231. Outer ring air intake passage;

[0069] 2311. Section of the first outer ring road; 2312. Section of the second outer ring road;

[0070] 232. Inner ring air intake passage;

[0071] 2321. First inner ring road section; 2322. Second inner ring road section;

[0072] 24. Ignition needle;

[0073] 200. Pneumatic circuit components;

[0074] 201. Outer ring gas path; 202. Inner ring gas path. Detailed Implementation

[0075] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although this embodiment is described in conjunction with a specific outer ring mixing chamber assembly, it is obvious that those skilled in the art can flexibly adjust the number, structure, and relative positions of the outer ring mixing chambers, such as combining two outer ring mixing chambers, one being larger than a semicircular ring and the other smaller than a semicircular ring, or the outer ring including two outer ring mixing chambers while the inner ring includes only one circular ring mixing chamber, etc.

[0076] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0078] Furthermore, to better illustrate this utility model, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this utility model can be implemented even without certain specific details. In some examples, the principles of burners, which are well-known to those skilled in the art, are not described in detail in order to highlight the main points of this utility model.

[0079] The following will refer to Figures 1 to 15 This utility model is described by at least a portion thereof.

[0080] Main reference Figures 1 to 15In one possible implementation, the stove mainly includes a burner 100 and a gas circuit assembly 200. Typically, one or more burners are provided on the stove surface. In the case of multiple burners, the operating parameters such as the on / off state and firepower of each burner can be controlled independently, allowing multiple burners to cook the same / different ingredients of the same / different types simultaneously. The burner 100 includes a burner cap assembly 1 and a burner head assembly 2. The gas path assembly 200 includes an outer ring gas path 201 and an inner ring gas path 202. The burner cap assembly 1 is disposed on the burner head assembly 2, and the gas path assembly 200 can be connected to the burner head assembly 2. Based on this, after the gas reaches the burner head assembly 2 through the outer / inner ring gas path of the gas path assembly 200, it reaches the mixing chamber (including an outer ring mixing chamber 151 and an inner ring mixing chamber 152) through the ejector channels (including a first ejector channel 141 and a second ejector channel 142) of the burner cap assembly 1. The burner 100 is provided with an ignition needle 24 (ignition function) and a thermocouple (flameout protection function). By controlling the ignition of the ignition needle 24, the gas mixture of gas and air in the mixing chamber can be burned. The burner cap assembly 1 has flame outlet structures 16, such as flame outlet holes and flame outlet slits, at a position corresponding to the mixing chamber. The flame generated in the mixing chamber is released through the flame outlet structures 16, thus providing the cookware placed on the burner with the heat-carrying flame required for cooking. In this invention, the burner can produce a variety of flame patterns, and can be referred to as a multi-flame burner. The gas circuit assembly 200 typically includes a main on / off valve, an on / off valve, and a proportional valve (or motor valve). The main on / off valve is usually located on the main gas circuit of the gas circuit assembly and is mainly used to control the gas flow of the overall gas circuit. The on / off valve is mainly used to control the gas flow of a related gas circuit. The proportional valve is mainly used to adjust the gas flow of the corresponding gas circuit, thereby adjusting the burner's flame intensity. The motor valve has the same function as the proportional valve, but uses a motor drive to control the gas flow of the corresponding gas circuit, thereby adjusting the burner's flame intensity. The following description uses a burner of a stove as an example, combined with its structure and the gas circuit assembly configured thereon, to illustrate this invention.

[0081] In one possible implementation, the burner assembly 1 includes a burner seat and a burner. The burner seat includes a first burner seat 111 and a second burner seat 112. The first burner seat is generally annular, and the second burner seat is located radially inside the first burner seat 111. The first burner seat 111 includes an outer ring region 101, and the second burner seat 112 includes an inner ring region 102 located radially inside the outer ring region. The burner includes a first burner 121 (which may be referred to as an outer ring burner) and a second burner 122 (which may be referred to as an inner ring burner). The first burner 121 and the second burner 122 are respectively located at positions corresponding to the outer ring region and the inner ring region of the burner assembly. Based on this, the outer ring burner and the first burner seat are engaged at positions corresponding to the outer ring region to form an outer ring mixing chamber group containing multiple outer ring mixing chambers 151, and the inner ring burner and the second burner seat are engaged at positions corresponding to the inner ring region to form an inner ring mixing chamber 152.

[0082] In one possible implementation, a first burner cap seat 111 is disposed on a second burner cap seat 112, and the second burner cap seat 112 is disposed on the burner head assembly 2. In this example, the second burner cap seat 112 is generally cylindrical, and an inner ring region 102 is provided or formed at the upper end of the cylindrical structure (the side near the second burner cap). In this way, when the upper part of the cylindrical structure is inserted into the middle of the first burner cap seat, the inner ring burner cap and the second burner cap seat are engaged to form an inner ring mixing chamber 152.

[0083] In this example, the cylindrical structure has a mounting structure 1121, such as a screw hole, at its lower part. The support assembly can be fixed to the burner assembly by means of fasteners such as screws and the engagement of the screw holes. For example, there are two mounting structures 1121, so that the second burner cap seat can be mounted to the burner assembly by means of a pair of screws and screw holes.

[0084] Obviously, the structure and number of installation components can be flexibly adjusted according to actual needs. For example, the connection between the second burner cap and the burner head assembly can be achieved through plug-in, snap-fit, or any other reasonable method. In addition, the outer / inner ring burner cap and the first / second burner cap seats can be fixedly connected by fasteners such as screws, or they can be connected to each other by plug-in, snap-fit, or any other reasonable method.

[0085] In one possible implementation, the burner cap assembly 1 includes a protective component 13 located above the nozzle assembly of the burner head assembly 2. This protective component primarily creates a protective field to effectively block debris such as oil droplets, food residue, and water droplets from entering the nozzle assembly. The protective component 13 includes a first protective structure 131 disposed on the first burner cap seat 111, which primarily serves to block debris from entering the nozzle assembly over a large area. Exemplarily, the first burner cap seat includes a first annular portion and a second annular portion located radially inside the first annular portion. A first ejector channel 141 is disposed between the first and second annular portions, and the second annular portion constitutes the first protective structure 131, such that the first protective structure 131 can completely cover the nozzle assembly of the burner head assembly in the vertical direction. In this example, the generatrix of the portion of the second annular part near the outer edge (ignoring the thickness of the second annular part, the longitudinal section of the second annular part contains a pair of lines, any of which can be called the generatrix) can be an arc, a diagonal line, or a combination thereof, so as to guide debris such as oil droplets, food residue, and water droplets intercepted on the upper surface of the first protective structure to a position below the burner located radially outside the nozzle assembly.

[0086] In one possible implementation, the protective component 13 includes a second protective structure 132 disposed on the second burner cap seat 112, primarily used to further prevent debris from entering the nozzle assembly. Taking the aforementioned second burner cap seat as a roughly cylindrical structure as an example, if a third annular portion extends circumferentially near the lower part of the cylindrical structure, and the first burner cap seat is positioned above the third annular portion corresponding to the second annular portion, then the third annular portion constitutes the second protective structure 132. In this example, the first protective structure 131 completely covers the second protective structure 132. The second protective structure is located below the first protective structure and completely covers the nozzle assembly of the burner head assembly vertically, thus ensuring the reliability of the nozzle assembly through secondary protection. Specifically, when oil droplets, food scraps, water droplets, etc., fall from above the stove onto the nozzle assembly on the burner head, it may cause the first / second nozzles of the nozzle assembly to become clogged, affecting the reliability of the nozzles, such as the inability to properly expel gas.

[0087] In this example, the second protective structure is roughly a stepped surface. The vertical portion and / or the horizontal portion at the outer edge of the stepped surface can be adjusted from vertical / horizontal lines to diagonal lines, arcs, or combinations thereof, to better intercept debris reaching the stepped surface and drop it below the burner, outside the nozzle assembly. Clearly, besides a stepped surface, the second protective structure can also be a structure similar to the aforementioned first protective structure. In other words, those skilled in the art can determine the structural form of the first / second protective structure according to actual needs, so as to ensure the operational reliability of the burner assembly's nozzle assembly through secondary protection.

[0088] Obviously, the second / third annular portion as the first / second protective structure is merely an exemplary description. Those skilled in the art can determine the structural form, placement, and relative positions / fitting relationships of the first / second protective structure according to actual needs. This may include, but is not limited to:

[0089] Below the second annular portion is a structure that can sit on the third annular portion (such as a fourth annular portion), that is: the structure for connecting with the third annular portion and the first protective structure can be integrally formed or separately set.

[0090] The second annular portion is located within the third annular portion, and the second protective structure is a fourth annular portion situated below or on the outer edge of the third annular portion. That is, the structure used to connect with the second annular portion and the structure used for secondary protection can be integrally formed or separately installed.

[0091] The first and second flame cap holders can also be connected to each other using any other reasonable method such as screw connection, plug connection, or snap connection. That is, the structure used to achieve the mating connection of the first / second flame cap holders and the first / second protective structure can be integrated to a certain extent or set up relatively independently.

[0092] In one possible implementation, the protective component 13 includes a protective guiding structure 133. Taking the second burner cap seat as a roughly cylindrical structure as an example, the cylindrical structure has an inner ring area at its upper end. A structure such as a ring platform, capable of engaging (fastening) with the inner ring burner cap, is provided at a position corresponding to the inner ring area (e.g., radially outer side of the inner ring area). The protective guiding structure 133 is located above the first protective structure 131. The protective guiding structure is mainly used to guide the aforementioned oil droplets, food residue, water droplets, and other debris to the first protective structure, thereby ensuring that more debris can smoothly reach the bottom of the burner via the first protective structure. In this example, the protective guiding structure is located on the side wall of the cylindrical structure near the upper end, and the structure of the protective guiding structure is roughly a ring-shaped guiding surface. The generatrix of the guiding surface can be a diagonal line, an arc, or a combination thereof. Obviously, this is only an exemplary description of a protective guiding structure. Those skilled in the art can flexibly adjust the structural form, number, and setting position of the protective guiding structure according to actual needs. For example, the protective guiding structure can be a flange, or it can be set in the middle of the cylindrical structure or any other reasonable position. It can include, but is not limited to: the protective guiding structure can be set in a strip groove on the wall of the cylindrical structure; the cylindrical structure can be adjusted to a structure with a gradually changing radial dimension along the axial direction (such as a frustum) so that the wall of the cylindrical structure directly constitutes the protective guiding structure; the protective guiding structure includes multiple flanges distributed along the axial direction of the cylindrical structure.

[0093] In one possible implementation, the gas path assembly 200 includes an outer ring gas path group and an inner ring gas path 202. The outer ring gas path group includes four outer ring gas paths 201 capable of supplying fuel gas to the mixing chamber corresponding to the outer ring region, and the inner ring gas path capable of supplying fuel gas to the mixing chamber corresponding to the inner ring region. Figures 13 to 15 The air supply direction of the outer ring air passage 201 and the inner ring air passage 202 is shown only by dashed lines.

[0094] In one possible implementation, the mixing chamber includes an outer ring mixing chamber group and an inner ring mixing chamber 152. The outer ring mixing chamber group includes four outer ring mixing chambers 151, such as outer ring mixing chamber 151(a), outer ring mixing chamber 151(b), outer ring mixing chamber 151(c), and outer ring mixing chamber 151(d), respectively. The aforementioned four outer ring gas paths can supply fuel gas to the four outer ring mixing chambers in a one-to-one correspondence and relatively independent manner. The inner ring gas path can supply fuel gas to the inner ring mixing chamber. The outer ring region 101 includes a first ring region 1011 (which may be referred to as the outer ring) and a second ring region 1012 (which may be referred to as the middle ring) located radially inside the first ring region. For example, the outer ring region is radially divided into an outer first ring region and an inner second ring region via a first gas distribution structure 1013, which is generally annular in structure. Among them, the outer ring mixing chambers 151(a) and 151(b) are arranged circumferentially in the outer ring, and the outer ring mixing chambers 151(c) and 151(d) are arranged circumferentially in the middle ring.

[0095] In one possible implementation, a pair of second gas-distributing structures 1014 are respectively provided in the outer ring and the middle ring. These second gas-distributing structures can be any structure capable of splitting the mixing chamber, such as a sheet structure or a block structure. In this way, one ring region can be divided into two areas, thus forming two outer ring mixing chambers within one ring region.

[0096] Obviously, the two pairs of second gas distribution structures located in the outer and middle rings can be the same or different, and the two second gas distribution structures within the same pair can also be the same or different. Furthermore, the relative positions of the two pairs of second gas distribution structures in the outer and middle rings, as well as the relative positions of the two second gas distribution structures within the same pair, can be flexibly adjusted according to actual needs, thereby dividing the outer and middle rings into two outer ring mixing chambers with arbitrary combinations. In other words, the relative positions between the two pairs of outer ring mixing chambers in the outer and middle rings, and the relative positions between the two outer ring mixing chambers within the same pair, can be flexibly adjusted according to actual needs.

[0097] In one possible implementation, the outer ring mixing chamber is approximately a semi-circular ring structure. Specifically, the outer ring mixing chambers 151(a) and 151(b), which are approximately semi-circular ring structures, are approximately symmetrically distributed along the front-to-back direction to form an outer ring. Heat radiation can be reduced by closing the front outer ring mixing chamber or lowering its heat output. The outer ring mixing chambers 151(c) and 151(d), which are approximately semi-circular ring structures, are approximately symmetrically distributed along the left-to-right direction to form a middle ring. Thus, the outer ring mixing chambers 151(a), 151(b), 151(c), and 151(d) are approximately staggered along the circumference of the outer ring region. In this example, half of each outer ring mixing chamber in the middle ring overlaps circumferentially with one outer ring mixing chamber in the outer ring, and the other half overlaps circumferentially with another outer ring mixing chamber in the outer ring. Based on this, by uniformly and alternately distributing the outer ring mixing chambers corresponding to the outer and middle rings along the circumference of the outer ring region, it is expected that the burner can produce a richer flame state.

[0098] In one possible implementation, the flame outlet structure 16 is arranged on the flame cap assembly as follows: the inner ring flame cap has flame outlet structures at the top and near the top of the side, respectively, thereby enabling the formation of two ring flames based on the inner ring mixing chamber, such as a single ring flame 16(a) and a double ring flame 16(b), where the single ring flame is a slit flame and the double ring flame is a direct flame. The outer ring flame cap has two ring flames near the radially inner side and one ring flame near the radially outer side, such as a triple ring flame 16(c), a quadruple ring flame 16(d), and a quintuple ring flame 16(e). In this example, the outer ring flame cap has a structure such as a slope, fold, or curved surface that expands outward from bottom to top near the radially inner side. In this way, the two ring flames located on the radially inner side of the outer ring flame cap can differ in the radial and height directions, and the resulting flame expands outward in a circumferential direction. In this example, one of the two ring flames is a slit flame and the other is a direct flame. Similarly, the outer ring burner cap, located near the radially outer side, has a ring of flame positioned on a structure where the height of the radially outer side is lower than that of the radially inner side (e.g., a slope, curved surface, etc.). In this example, the outermost ring may be a direct flame. This allows for the formation of five rings of flame on the burner (including two rings in the inner ring region and three rings in the outer ring region). By controlling the amount of fuel gas corresponding to the four mixing chambers, the flame intensity of the two rings in the inner ring region can be adjusted, and the flame patterns of the three rings in the outer ring region can be flexibly combined along their circumference. Based on this, it is hoped that the burner can produce a richer variety of flame patterns.

[0099] Obviously, the above-mentioned five-ring flame is only an exemplary distribution of the flame outlets on the outer / inner ring flame cap. Those skilled in the art can flexibly adjust it according to actual needs, such as including but not limited to: reducing the three ring flames of the outer ring to two ring flames; adjusting the setting position and structural form of each ring flame, such as replacing the ring-seam flame with a straight flame, the width of different ring-seam flames can be the same or different, the specifications (pore diameter / density) of the flame outlets of different straight flames can be the same or different; for the same ring flame, the flame outlets in different parts along the circumference can be the same or different, such as some being ring-seam flames and some being straight flames; replacing one of the ring flames with an arc-shaped flame that is only set locally along the circumference.

[0100] In one possible implementation, the burner cap assembly 1 includes a guide section 17, which comprises a first guide portion 171 capable of guiding the gas mixture of combustion gas and air in the first ejector channel to the corresponding outer ring mixing chamber, and a second guide portion 172 capable of guiding air from the external environment to a position corresponding to the inner ring region. In this way, the quality of the gas mixture in the outer and inner ring mixing chambers can be ensured through the guide section. For example, it can ensure that the gas mixture in the first ejector channel can smoothly ascend to the outer ring mixing chamber, and that there is sufficient oxygen in the gas mixture in the inner ring mixing chamber. The burner cap assembly 1 includes a connecting structure through which the gas mixture of combustion gas and air in the first ejector channel can reach the corresponding outer ring mixing chamber. The structural form and location of the connecting structure can be flexibly selected according to actual needs.

[0101] In one possible implementation, the first flame cap portion 1111 is provided with a first connecting structure 1113 and a second connecting structure 1114 at positions corresponding to each outer annular mixing chamber. The mixed gas formed in the first ejector channel 141 can reach the corresponding outer annular mixing chamber under the guidance of the first guiding portion via the first connecting structure and the second connecting structure, respectively. In this example, the first connecting structure 1113 and the second connecting structure 1114 are generally located above the outlet of the first ejector channel in the first flame cap portion 1111. Exemplarily, the first connecting structure 1113 and the second connecting structure 1114 are generally arc-shaped holes (strip holes) extending circumferentially along the first / second annular region, and are symmetrically distributed and spaced above the outlet of the first ejector channel. Obviously, the structural form and distribution of the first / second connecting structures can be flexibly adjusted according to actual needs.

[0102] In one possible implementation, the bottom of the second flame cap portion 1112 is provided with a plurality of guide structures 173. The upper side of the guide structure (located inside the flame cap) can form a first guide portion 171, and the bottom side of the guide structure (located outside the flame cap) can form a second guide portion 172. In this example, the guide structure is generally an arched structure, such as four arched structures evenly distributed circumferentially at the bottom of the first and second ring regions. Taking the first ring region as an example, the four arched structures are divided into two pairs, with one pair of arched structures symmetrically arranged at the position corresponding to each first ejector channel. Similar to the first ring region, the second ring region has one pair of arched structures symmetrically arranged at the position corresponding to each first ejector channel. In this case, when forming the second guide portion, air flows sequentially through the two portions corresponding to the first and second ring regions. Therefore, it can be understood that the oxygen content in the mixed gas in the inner ring mixing chamber is guaranteed by the combination between the two radially partitioned portions.

[0103] Based on the above example, on the upper side of the guiding structure, each pair of arched structures (near the outlet of the first ejector channel) forms a pair of first guiding portions for the first ejector channel. The guiding directions of the pair of first guiding portions are approximately opposite. In this way, the mixed gas in the first ejector channel, guided by the two first guiding portions, enters two local areas on both sides of the outer annular mixing chamber via the first connecting structure and the second connecting structure, respectively. The first guiding portions can promote the mixed gas to reach the outer annular mixing chamber in a split, directional climbing manner, thereby ensuring the uniformity of the mixed gas in the outer annular mixing chamber.

[0104] Based on the above example, the bottom side of the guiding structure can be understood as each arched structure forming a second guiding section, or the bottom sides of four arched structures combined to form a second guiding section. In short, the constructed second guiding section allows the air circumferentially outside the burner assembly to mix with the combustion gas from the second nozzle within the second ejector channel, guided by the second guiding section, and further reach the inner annular mixing chamber. This ensures the amount of oxygen in the mixed gas within the inner annular mixing chamber.

[0105] Obviously, the above-described structural form of the guide section is merely an exemplary description, and those skilled in the art can flexibly adjust it according to their needs. For example, the structural form, number, and distribution of the guide structure on the flame cap assembly can be flexibly selected. The guide structure can be an inclined surface, an arc surface, or a combination thereof. The guide structure can include one or more, and multiple guide structures can be evenly or unevenly distributed in the outer ring area. Similarly, the structural form of the first / second guide portion, the number of components contained in each first / second guide portion, and the number of first / second guide portions contained in the guide section can be flexibly selected. The first / second guide portions can be independent structures or integrated structures to a certain extent. In this example, a portion of the upper surface of a guide structure forms the first guide portion, and the entire lower surface of a guide structure forms the second guide portion. Clearly, those skilled in the art can flexibly adjust the correspondence between the guide structures and the first / second guide portions, including but not limited to: the guide structures forming the first / second guide portions can share a common structure or be two independent structures; the guide structures can form the first / second guide portions on the upper / lower surfaces corresponding to the same or different portions, respectively.

[0106] In one possible implementation, the burner assembly 2 includes a burner head 21 and a nozzle group disposed on the burner head 21. In this embodiment, the nozzle group includes four first nozzles 221 (which may be referred to as the first nozzle group) corresponding to the four outer ring gas paths in the outer ring gas path group, and second nozzles 222 corresponding to the inner ring gas paths. The burner head 21 is provided with an air intake channel group, which includes an outer ring air intake channel group and an inner ring air intake channel 232. The outer ring air intake channel group includes four outer ring air intake channels 231 corresponding to the four outer ring gas paths in the outer ring gas path group. Based on this, the gas can reach the corresponding first nozzle 221 via the outer ring gas paths and outer ring air intake channels in the outer ring gas path group, and the gas can reach the second nozzle 222 via the inner ring gas path and inner ring air intake channels.

[0107] In one possible implementation, the first nozzle 221 and the second nozzle 223 of the nozzle assembly are centrally located at the burner head. For example, the burner head 21 has a nozzle mounting area 211 located near its upper part, and the first nozzle 221 and the second nozzle 222 are centrally located within this mounting area. The second nozzle 222 is positioned approximately vertically in the center of the mounting area, with four first nozzles 221 arranged around its outer perimeter. Because the second nozzle employs a vertically injected gas path, it simplifies the gas path corresponding to the inner annular mixing chamber and exhibits low resistance. This allows for the entrainment of more air into the second ejector channel during injection, resulting in more thorough mixing of the gas and air and thus optimizing combustion efficiency. In this example, the first nozzle 221 and the second nozzle 222 are approximately identical in size. The nozzle mounting area can be an axisymmetric structure, such as a pyramidal surface, conical surface, or frustum, with the center higher than the outer edge. The four first nozzles (viewed from the upstream to the downstream side of the gas path) are arranged in the nozzle mounting area in a manner that is approximately inclined outward from bottom to top. For example, the four first nozzles are distributed approximately evenly along the circumference.

[0108] In one possible implementation, the inner ring air intake channel 232 extends generally horizontally toward the center of the second nozzle on the burner head 21, and four outer ring air intake channels 231 are arranged around the inner ring air intake channel 232. In this example, the four outer ring air intake channels have approximately the same structure and are symmetrically arranged on the burner head, with the inner ring air intake channel located between two adjacent outer ring air intake channels.

[0109] In one possible implementation, the outer ring intake passage 231 includes a transverse portion as a first outer ring passage portion 2311 and a vertical portion as a second outer ring passage portion 2312, which are connected to each other along the combustion gas path. The upstream side of the transverse portion can connect to a corresponding outer ring gas path, and the downstream side of the vertical portion can connect to a corresponding first nozzle. The first burner cap 111 has a first ejector passage 141 at positions corresponding to the four first nozzles, and the second burner cap 112 has a second ejector passage 142 at positions corresponding to the second nozzles. The upstream side of the first ejector passage 141 is aligned with the corresponding first nozzle, and the downstream side of the first ejector passage communicates with the corresponding outer ring mixing chamber. The upstream side of the second ejector passage is aligned with the second nozzle, and the downstream side of the second ejector passage communicates with the inner ring mixing chamber. Taking the example that all four outer ring mixing chambers are approximately semi-circular structures, in this example, the downstream side of the first ejector passage communicates with the corresponding outer ring mixing chamber approximately at the middle position of the semi-circular structure along its circumference.

[0110] In one possible implementation, corresponding to the installation method of the first nozzle, the first ejector channel is an ejector channel that slopes upward from the inside out, such as the axes of the first ejector channel and the first nozzle being roughly aligned. Corresponding to the installation method of the second nozzle, the second ejector channel is an ejector channel that extends approximately vertically, such as the axes of the second ejector channel and the second nozzle being roughly aligned. For conventional nozzles installed parallel to the cooktop surface, due to the low gas density, there will be an upward offset (partial velocity) during horizontal ejection. This will cause the actual ejection direction of the gas to deviate from the expected direction (the axial direction of the ejector channel), thus affecting the gas ejection effect and consequently the combustion performance. In the preferred embodiment of this invention, by adjusting the first nozzle / first ejector channel corresponding to the outer ring mixing chamber to an upwardly inclined configuration, the amount of gas offset and dispersion during ejection can be reduced, thereby improving the ejection effect and combustion performance.

[0111] For example, the burner head 21 includes four first air intake channel bases 212 corresponding to four first nozzles 221 and second air intake channel bases 213 corresponding to second nozzles 222. In this example, the first air intake channel base is approximately a first protruding end extending circumferentially from the burner head, and the second air intake channel base 213 is a second protruding end disposed between two of the first protruding ends. Exemplarily, the structures of the first and second protruding ends are approximately the same, both being approximately cuboid block structures. The four first protruding ends are evenly distributed circumferentially, and the second protruding ends are approximately inserted in the middle of the two first protruding ends. The first outer ring channel portion of the outer ring air intake channel is disposed at the corresponding first protruding end, and the second outer ring channel portion of the outer ring air intake channel is located radially inner to the first protruding end.

[0112] In one possible implementation, the inner ring intake channel 232 includes a first inner ring channel portion 2321 and a second inner ring channel portion 2322. In this example, the first inner ring channel portion 2321 is disposed on the second intake channel base 213 and extends generally in the horizontal direction, while the second inner ring channel portion 2322 extends generally in the vertical direction.

[0113] In this example, the burner head is roughly hollow, and five pipes extend from the hollow area of ​​the burner head to form four second outer ring channel sections and one second inner ring channel section.

[0114] Obviously, those skilled in the art can determine the structural form of the first / second air intake channel and its formation method on the burner head according to actual needs. For example, it may include, but is not limited to: the first / second protruding end may be multiple separate cuboid structures as in this example, or it may be any other structural form such as a polygonal prism or an irregular structure; the first / second protruding end may be omitted and the corresponding first / second air intake channel may be directly processed on the burner head, such as processing the burner head into a prism structure at the position corresponding to the first / second air intake channel (which can also be understood as multiple first / second protruding ends being integrally formed), or the burner head may be any form of structure such as a cylinder, and a plane or other surface that is easy to cooperate with the outer ring / inner ring air passage may be processed at the position where the air intake channel needs to be processed; the structure of the second outer ring / inner ring channel part of the burner head forming the first / second air intake channel may be integrally formed with the first / second protruding end.

[0115] Obviously, the above-described burner head assembly is merely a preferred exemplary description. Those skilled in the art can flexibly adjust the structure of the nozzle assembly and its distribution on the burner head, the structure of the nozzle mounting area, and the structure of the outer / inner ring air intake channels and their distribution on the burner head according to actual needs. This includes, but is not limited to:

[0116] (1) The specifications of the first nozzle and the second nozzle in the nozzle group can be the same or different. The specifications of each first nozzle in multiple first nozzles can be the same or different. In addition, the first / second nozzle can be fixed to the furnace head in any reasonable way.

[0117] (2) Multiple first nozzles can be arranged around the second nozzle in a uniform or non-uniform manner. In addition, the five nozzles can also be arranged in the furnace head in any reasonable manner, such as being arranged in the circumferential direction (a certain reference radial dimension) or in any other reasonable manner, such as the line connecting the four nozzles being a rectangle, the four nozzles being collinear, or the four first nozzles being arranged in inner and outer rings around the outside of the second nozzle.

[0118] (3) The second nozzle can be installed on the burner head in a vertical direction or in any feasible manner, such as including but not limited to: directly communicating with the inner ring mixing chamber in a manner with an angle greater than 60° with the horizontal plane. Correspondingly, the inner ring air intake channel also needs to be adjusted accordingly; the second ejector channel corresponding to the second nozzle is also adjusted to an upward inclined structure. For example, the gas ejected from the second nozzle reaches the circumferential outer edge of the inner ring area or the outer ring area after passing through the inner ring air intake channel and the inclined second ejector channel, and then further communicates with the inner ring mixing chamber.

[0119] (4) The nozzle mounting area can be any structure that allows multiple nozzles to be set together, such as including but not limited to: machining one or more bosses on a plane (such as one of the bosses having a slope that can install two nozzles, etc.); the nozzle mounting area is a columnar structure, and the first / second nozzle can be set on the top and / or the side wall near the top of the columnar structure.

[0120] (5) The structure and distribution of the four outer ring air intake channels can be flexibly adjusted according to the requirements. For example, the structure of the four outer ring air intake channels can be the same or different, and they can be set in the burner head in a uniform or non-uniform manner. The four outer ring air intake channels can be any other reasonable structural form, such as including but not limited to: adjusting the horizontal part of the first outer ring channel to a structure that is inclined upward from the outside to the inside; adjusting the vertical part of the second outer ring channel to a structure that is inclined outward from the bottom to the top; adding a first transition section such as an arc section between the first outer ring channel and the second outer ring channel; adding a second transition section such as an inclined straight section or an arc section between the downstream side of the second outer ring channel and the corresponding first nozzle.

[0121] It can be seen that, in the preferred embodiment of the utility model, based on the stove comprising four outer ring gas paths and one inner ring gas path, by appropriately configuring the burner cap assembly and burner head assembly, it is expected that the burner can produce a richer variety of flame states while ensuring flame quality. Specifically, by configuring the outer ring mixing chamber group corresponding to the outer ring gas path group in the burner cap assembly, such as radial double ring, semi-ring mixing chamber, or semi-ring mixing chambers arranged radially in a staggered manner, and by controlling the valves of the corresponding outer ring gas paths, the burner can produce flame states such as multi-ring uniform flame, intermittent multi-zone flame, and eccentric flame. The reliability of the nozzle assembly can be ensured by the protective components. The quality of the mixed gas in the outer ring mixing chamber and the inner ring mixing chamber is ensured by the guide portion. By configuring the gas path and flame outlet structure of the inner ring zone, the flame quality of the inner ring zone can be guaranteed, and the cooking needs at low flame levels can be met by supplying gas through the outer ring gas path.

[0122] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A burner with multiple flame configurations, characterized in that, The burner includes a flame cap assembly, which forms an outer ring mixing chamber group and an inner ring mixing chamber, and the outer ring mixing chamber group includes multiple outer ring mixing chambers. The flame cap assembly includes an outer ring region and an inner ring region. The inner ring mixing chamber is formed in the inner ring region. The outer ring region includes a first ring region and a second ring region located radially inside the first ring region. A portion of the plurality of outer ring mixing chambers is formed in the first ring region, and another portion of the plurality of outer ring mixing chambers is formed in the second ring region.

2. The burner according to claim 1, characterized in that, The flame cap assembly includes a first gas distribution structure, which is an annular structure. The outer annular region is divided by the first gas distribution structure to form the first annular region and the second annular region.

3. The burner according to claim 1, characterized in that, The plurality of outer annular mixing chambers include four, two of which are arranged circumferentially in the first annular region, and the other two of which are arranged circumferentially in the second annular region.

4. The burner according to claim 3, characterized in that, The outer annular mixing chamber formed in the second annular region overlaps circumferentially with at least one of the two outer annular mixing chambers formed in the first annular region.

5. The burner according to claim 3, characterized in that, The flame cap assembly includes a second gas distribution structure, wherein the first annular region and the second annular region are respectively divided by the second gas distribution structure into two circumferentially distributed outer annular mixing chambers.

6. The burner according to claim 5, characterized in that, The two outer annular mixing chambers formed in the first annular region are symmetrically arranged; and / or The two outer ring mixing chambers formed in the second ring region are symmetrically arranged.

7. The burner according to claim 5, characterized in that, The two outer annular mixing chambers of the first annular region are arranged approximately symmetrically along the first axis, and the two outer annular mixing chambers of the second annular region are arranged approximately symmetrically along the second axis. The first axis and the second axis are perpendicular to each other.

8. The burner according to claim 1, characterized in that, The burner includes a burner head assembly, the burner head assembly comprising: The burner head has a nozzle mounting area; and The nozzle assembly includes a plurality of first nozzles corresponding to the outer annular mixing chamber assembly and a second nozzle corresponding to the inner annular mixing chamber assembly. The plurality of first nozzles are arranged around the second nozzle.

9. A stove, characterized in that, The stove includes a multi-flame burner as described in any one of claims 1 to 8.

10. The stove according to claim 9, characterized in that, The cooktop includes an outer ring gas path assembly and an inner ring gas path assembly. The outer ring gas path assembly includes multiple outer ring gas paths corresponding to multiple outer ring mixing chambers. The gas can reach the corresponding outer ring mixing chamber through the outer ring gas path, and the gas can reach the inner ring mixing chamber through the inner ring gas path.

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