Burner and hob comprising same

Abstract

The utility model belongs to kitchen electrical equipment technical field, specifically provides burner and the stove including it, the burner among them includes the fire cover subassembly, the fire cover subassembly forms with outer ring mixed gas cavity group and inner ring area, a plurality of outer ring mixed gas cavities set up in the outer ring area, wherein, the fire cover subassembly includes: a plurality of first injection channels corresponding with a plurality of outer ring mixed gas cavities, and gas can reach corresponding outer ring mixed gas cavity via the first injection channel, and second injection channel, and gas can reach corresponding inner ring mixed gas cavity via the second injection channel. Through such constitution, through the combination of a plurality of outer ring mixed gas cavities that are separately arranged in the outer ring area, the burner can produce more abundant flame form.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, specifically to a 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 cookware 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 point on the burner then ignites the gas-air mixture, producing a flame that provides heat to the cookware. 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, for the same ring flame in a cooktop, the mixing chamber is usually uniform along the circumference. This structural design results in a relatively simple flame pattern. There is still room for improvement in cooktop design to enable the burner 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 burner comprising a burner 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 burner cap assembly comprises an outer annular region and an inner annular region, the inner annular mixing chamber being formed in the inner annular mixing chamber, and the plurality of outer annular mixing chambers being disposed in the outer annular region; wherein the burner cap assembly comprises: a plurality of first ejector channels corresponding to the plurality of outer annular mixing chambers, through which gas can reach the corresponding outer annular mixing chamber; and a second ejector channel through which gas can reach the corresponding inner annular mixing chamber.

[0006] With this configuration, the gas (typically a mixture of fuel gas and air) is delivered to the corresponding outer / inner ring mixing chambers via the first / second ejector channels. Based on this, it is possible to generate more diverse flame patterns through the combination of multiple outer ring mixing chambers.

[0007] It is understandable that those skilled in the art can determine the number of outer ring mixing chambers and their distribution in the outer ring region according to actual needs.

[0008] It is understood that those skilled in the art can determine the structural orientation, ejection direction, relative positions between ejection channels, arrangement of the first / second ejection channels on the flame cap assembly, and communication methods between the first / second ejection channels and the outer / inner ring mixing chambers, etc., according to actual needs. For example, the ejection directions of the first ejection channels corresponding to each outer ring mixing chamber, and the ejection directions of the first and second ejection channels, may be the same or different. The communication positions and the number of communication points between each first ejection channel and its corresponding outer ring mixing chamber may be the same or different. For example, the first ejection channel can be connected to the outer ring mixing chamber at any reasonable position, such as near the middle or end.

[0009] In one possible implementation of the burner described above, the burner includes a burner head assembly comprising: a burner head having a nozzle mounting area; and a nozzle assembly including 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; wherein the plurality of first nozzles are arranged around the second nozzles, and the second nozzles are arranged substantially vertically on the burner head.

[0010] This configuration ensures the compactness of the burner assembly. Furthermore, by differentiating the ejector directions corresponding to the first and second ejectors passing through the outer / inner ring mixing chambers, it is expected that the outer and inner ring zones of the burner will provide differentiated flame qualities related to the ejector direction.

[0011] For example, the second nozzle uses a vertically injected gas path, which simplifies the gas path corresponding to the inner ring mixing chamber and has low resistance. As a result, more air can be drawn into the second ejector channel during ejection, allowing the gas and air to mix more thoroughly, thereby optimizing combustion efficiency.

[0012] In one possible implementation of the burner described above, the burner cap assembly includes a first gas distribution structure, the outer annular region is divided by the first gas distribution structure to form 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 is formed in the first annular region, another portion of the plurality of outer annular mixing chambers is formed in the second annular region, and the first ejector channel communicates with the corresponding outer annular mixing chamber at a position corresponding to the first annular region or the second annular region.

[0013] This configuration provides a possible way for the first / second ring region to be formed.

[0014] If the first gas distribution structure is roughly a ring structure, it should be noted that the ring structure here should be understood as roughly a ring structure. For example, the radial thickness, circumferential height, and local fine structure of the first partition structure can be flexibly selected according to actual needs. For example, the thickness of different local parts along the circumference can be different. For example, it can be a ring or a ring-like structure. For example, the local parts of the ring can be processed with arc surfaces, ridge surfaces, etc.

[0015] 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 zones according to actual needs. For example, the first and second annular zones may be structures that directly divide the outer annular zone into two via a first gas distribution structure such as a gas distribution ring, thereby making the two closely spaced, or the first and second annular zones may be two independent annular zones with a radial gap between them (such as providing a gap annular zone without a mixing chamber).

[0016] 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 / or the second annular region are divided by the second gas distribution structure into a plurality of circumferentially distributed outer annular mixing chambers.

[0017] This configuration allows for the creation of multiple outer annular mixing chambers in the outer annular region through the combination of the first and second gas distribution structures. Based on this, it is expected that the burner can produce a wider variety of flame patterns. It is understood that those skilled in the art can determine the number of outer annular mixing chambers in the first / second annular region, the proportional relationship between the outer annular mixing chambers within the same annular region, and the relative positions of the outer annular mixing chambers in different annular regions, etc., according to actual needs. For example, the second gas distribution structure can be a gas distribution plate, gas distribution block, or similar structure.

[0018] 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 chambers 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.

[0019] In one possible implementation of the burner described above, the burner cap assembly is provided with at least one communication structure at a position corresponding to the outer annular mixing chamber, and the first ejector channel is able to communicate with the corresponding outer annular mixing chamber via the at least one communication structure.

[0020] With this configuration, it is possible to achieve communication between the first ejector channel and the corresponding outer annular mixing chamber through a connecting structure.

[0021] It is understood that those skilled in the art can determine the structural form, number, and placement position of the connecting structures within the outer annular mixing channel, as well as the flow direction / path of the mixed gas after entering the outer annular mixing chamber via these structures, according to actual needs. For example, the flame cap holder has two connecting structures at positions corresponding to the first ejector channel, allowing the mixed gas to enter the corresponding outer annular mixing chamber in a multi-point release manner. The connecting structures can be any reasonable structural form, such as round holes, square holes, or multi-hole groups (comprising combinations of multiple small holes).

[0022] In one possible implementation of the above-mentioned burner, the outer annular mixing chamber includes a first outer annular mixing chamber, a second outer annular mixing chamber, a third outer annular mixing chamber, and a fourth outer annular mixing chamber, wherein the first outer annular mixing chamber and the second outer annular mixing chamber are arranged circumferentially in the first annular region, and the third outer annular mixing chamber and the fourth outer annular mixing chamber are arranged circumferentially in the second annular region.

[0023] 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.

[0024] 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.

[0025] In one possible implementation of the burner described above, the third outer annular mixing chamber and / or the fourth outer annular mixing chamber formed in the second annular region overlap with at least one of the first outer annular mixing chamber and the second outer annular mixing chamber formed in the first annular region in the circumferential direction.

[0026] This configuration allows for overlapping combinations of outer annular mixing chambers located in different annular zones, potentially resulting in more diverse flame patterns in the burner. Taking a pair of outer annular mixing chambers with overlapping portions along the circumference 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 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°.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] In one possible implementation of the above-mentioned burner, the two outer annular mixing chambers formed in the first annular region are arranged approximately symmetrically along a first axis, and the two outer annular mixing chambers formed in 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.

[0031] For example, both the first and second axes are approximately collinear with the diameter of the flame cap assembly.

[0032] In a second aspect, the present invention provides a stove that includes the burner described in any of the preceding claims.

[0033] It is understood that this stove has all the technical effects of the burner described in any of the foregoing items, and will not be repeated here. For example, the stove 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. 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

[0034] 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.)

[0035] Figure 1 This diagram illustrates the structure (three-dimensional) of a burner according to an embodiment of the present invention. Figure 1 ;

[0036] Figure 2 This diagram illustrates the structure (explosion) of a burner according to an embodiment of the present invention. Figure 2 ;

[0037] Figure 3 This diagram shows the structure (front view) of a burner according to an embodiment of the present invention. Figure 3 ;

[0038] Figure 4 A schematic diagram (top view) of the structure of a burner according to an embodiment of the present invention is shown. Figure 4 ;

[0039] Figure 5 This is an exploded schematic diagram of the burner cap assembly in a burner according to an embodiment of the present invention;

[0040] Figure 6 This diagram shows a structural schematic of the first burner cap seat in a burner according to an embodiment of the present invention.

[0041] Figure 7 This diagram illustrates the structure (three-dimensional) of the burner head assembly in an embodiment of the present invention. Figure 1 ;

[0042] Figure 8 This diagram shows the structure (top view) of the burner head assembly in an embodiment of the present invention. Figure 2 The air path components are shown in the figure with dashed lines;

[0043] Figure 9 This diagram shows a cross-sectional view of the burner head assembly in an embodiment of the present invention. Figure 3 ;as well as

[0044] Figure 10 This diagram shows a cross-sectional view of the burner head assembly in an embodiment of the present invention. Figure 4 .

[0045] List of reference numerals in the attached diagram:

[0046] 100. Burner;

[0047] 1. Flame cap assembly;

[0048] 111, First fire cover seat; 1111, 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 flame cover holder; 1121. Mounting structure;

[0052] 102. Inner Ring Road Area;

[0053] 121. First fire cap;

[0054] 122. Second fire cap;

[0055] 13. Protective structure;

[0056] 141. First ejection channel; 142. Second ejection channel;

[0057] 151. Outer annular mixing chamber; 152. Inner annular mixing chamber;

[0058] 16. Flame-out structure;

[0059] 2. Burner assembly;

[0060] 21. Stove head;

[0061] 211. Nozzle mounting area; 212. First channel substrate; 213. Second channel substrate;

[0062] 221. First nozzle; 222. Second nozzle;

[0063] 231. Outer ring air intake passage;

[0064] 2311. Section of the first outer ring road; 2312. Section of the second outer ring road;

[0065] 232. Inner ring air intake passage;

[0066] 2321. First inner ring road section; 2322. Second inner ring road section;

[0067] 24. Ignition needle;

[0068] 200. Pneumatic circuit components;

[0069] 201. Outer ring gas path; 202. Inner ring gas path. Detailed Implementation

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] The following will refer to Figures 1 to 10 This utility model is described by at least a portion thereof.

[0075] Main reference Figures 1 to 10 In 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. 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 line 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 specific gas line. The proportional valve is mainly used to adjust the gas flow of the corresponding gas line, thereby adjusting the burner's flame intensity. The motor valve has the same function as the proportional valve, but it uses a motor to control the gas flow of the corresponding gas line, thereby adjusting the burner's flame intensity. The following description uses a burner of a stove as an example, combining its structure and the gas circuit assembly configured thereon to illustrate this invention.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] In one possible implementation, a protective structure 13 is provided on the first and / or second burner cap seats of the burner cap assembly 1. The protective structure is located above the nozzle group of the burner head assembly 2 and is mainly used to create a protective field to effectively block debris such as oil droplets, food residue, and water droplets from entering the nozzle group. In this example, the protective structure is a flange set on the outer edge of the second burner cap seat. Obviously, the structural form, number, and setting position of the protective structure can be flexibly adjusted according to actual needs. For example, the flange can be a plane, a stepped surface, an arc surface, etc., and a protective structure such as an annular surface can also be set on the first burner cap seat to ensure the reliability of the nozzle group through double protection.

[0081] 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 8 to 10 The air supply direction of the outer ring air passage 201 and the inner ring air passage 202 is shown only by dashed lines.

[0082] 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 first outer ring mixing chamber 151(a), second outer ring mixing chamber 151(b), third outer ring mixing chamber 151(c), and fourth 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 by a first gas distribution structure 1013, which is generally annular in structure. The first outer ring mixing chamber 151(a) and the second outer ring mixing chamber 151(b) are arranged circumferentially on the outer ring, and the third outer ring mixing chamber 151(c) and the fourth outer ring mixing chamber 151(d) are arranged circumferentially on the middle ring.

[0083] In one possible implementation, a pair of second gas-distributing structures 1014 are respectively provided in the outer ring and the middle ring. That is, the outer ring and the middle ring are divided into an outer ring mixing chamber 151 by four (two pairs) second gas-distributing structures. For example, the second gas-distributing structure can be any structure that can realize the division of the mixing chamber, such as a sheet structure or a block structure. In this way, a ring area can be divided into two regions, thereby forming two outer ring mixing chambers within a ring area.

[0084] 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.

[0085] In one possible implementation, the outer ring mixing chambers are generally semi-circular in structure. Specifically, the first and second outer ring mixing chambers 151(a) and 151(b), which are also generally semi-circular in structure, are generally symmetrically distributed along the front-to-back direction to form an outer ring. This allows for reduced heat radiation and improved user experience by deactivating the first outer ring mixing chamber 151(a) or lowering its corresponding heat output parameters. The third, fourth, and fifth outer ring mixing chambers 151(c) and 151(d), which are also generally semi-circular in structure, are generally symmetrically distributed along the left-to-right direction to form a middle ring. Thus, the four outer ring mixing chambers are generally staggered along the circumference of the outer ring region. For example, 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.

[0086] 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.

[0087] 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.

[0088] In one possible implementation, the first burner cap 111 is provided with a connecting structure 1111 at a position corresponding to each outer annular mixing chamber, allowing the gas mixture of combustion gas and air in the first ejector channel to reach the corresponding outer annular mixing chamber via the connecting structure 1111. In this example, the connecting structure 1111 is a connecting hole approximately located in the middle of the outer annular mixing chamber. Obviously, the structural form, number, and arrangement of the connecting structures within the outer annular mixing chambers can be flexibly adjusted according to actual needs.

[0089] 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.

[0090] 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, and four first nozzles 221 are arranged around its outer edges. In this example, the first nozzles 221 and the second nozzles 222 are approximately identical in size. The 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 positioned approximately at an outward tilt from bottom to top within the mounting area. Exemplarily, the four first nozzles are distributed approximately evenly circumferentially.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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:

[0099] (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.

[0100] (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.

[0101] (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.

[0102] (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.

[0103] (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.

[0104] 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 making corresponding arrangements to 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 arranging the outer ring mixing chamber group corresponding to the outer ring gas path group in the burner cap assembly in ways such as radial double rings, semi-ring mixing chambers, or semi-ring mixing chambers arranged radially, 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. By setting the gas path and flame outlet structure of the inner ring zone, the flame quality of the inner ring zone can be guaranteed, and correspondingly, the cooking needs at low flame levels can be met by supplying gas through the outer ring gas path.

[0105] 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, 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, and the plurality of outer ring mixing chambers are disposed in the outer ring region; The flame cap assembly includes: Multiple first ejector channels corresponding to the plurality of outer annular mixing chambers allow gas to reach the corresponding outer annular mixing chamber via the first ejector channels; and The second ejector channel allows gas to reach the corresponding inner ring mixing chamber.

2. 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, and The second nozzle is disposed on the furnace head in a generally vertical direction.

3. The burner according to claim 1 or 2, characterized in that, The flame cap assembly includes a first gas distribution structure. The outer annular region is divided by the first gas distribution structure to form 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 is formed in the first annular region, and another portion of the plurality of outer annular mixing chambers is formed in the second annular region. The first ejector channel is connected to the corresponding outer ring mixing chamber at a position corresponding to the first ring region or the second ring region.

4. 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 / or the second annular region are divided by the second gas distribution structure into a plurality of circumferentially distributed outer annular mixing chambers.

5. The burner according to claim 3, characterized in that, The flame cap assembly has at least one communication structure at a position corresponding to the outer annular mixing chamber, and the first ejector channel can communicate with the corresponding outer annular mixing chamber via the at least one communication structure.

6. The burner according to claim 4, characterized in that, The outer annular mixing chamber includes a first outer annular mixing chamber, a second outer annular mixing chamber, a third outer annular mixing chamber, and a fourth outer annular mixing chamber. The first outer ring mixing chamber and the second outer ring mixing chamber are arranged circumferentially in the first ring area, and the third outer ring mixing chamber and the fourth outer ring mixing chamber are arranged circumferentially in the second ring area.

7. The burner according to claim 6, characterized in that, The third outer ring mixing chamber and / or the fourth outer ring mixing chamber formed in the second ring region have a circumferential overlap with at least one of the first outer ring mixing chamber and the second outer ring mixing chamber formed in the first ring region.

8. The burner according to claim 7, 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.

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

10. A stove, characterized in that, The stove includes the burner according to any one of claims 1 to 9.

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