Direct-injection high-power burners and cooktops containing them

Abstract

This utility model relates to the field of kitchen appliance technology, specifically to a direct-injection high-power burner and a stove including the same. The burner includes an inner ring region, comprising a first inner ring and a second inner ring located radially outside the first inner ring. The burner includes: a nozzle assembly, comprising a first inner ring nozzle; and an ejector channel assembly, comprising a first inner ring ejector channel. The burner has an open area corresponding to the first inner ring, through which gas flows via the first inner ring nozzle and the first inner ring ejector channel. The first inner ring ejector channel includes a first portion and a second portion along the gas intake direction, with the second portion arranged approximately vertically. This configuration allows for direct injection of gas in the second portion downstream of the first inner ring ejector channel in a vertical direction, thereby increasing the firepower in the central area of ​​the burner.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, specifically to a direct-injection high-power burner and a stove containing the same. Background Technology

[0002] A cooktop typically includes one or more burners, which provide heat to a pot placed on it, enabling cooking methods such as stewing, stir-frying, and deep-frying. The burner works by delivering gas through a gas path to the nozzle, where it passes through an injection channel to form a gas-air mixture. This mixture is then ignited, producing a heat-carrying flame through the flame outlet below the pot.

[0003] For any stove that provides high heat and intense flames in the inner ring of the burner, there is a common problem that the cooking quality is affected by insufficient heat. Taking stir-frying as an example, if the temperature of the bottom of the pot cannot rise quickly when the ingredients and seasonings (such as soy sauce) are put into the pot, it will affect the "wok hei" feeling of the dish to a certain extent. Utility Model Content

[0004] The present invention aims to at least partially solve the aforementioned technical problems and / or solve at least a portion of the aforementioned technical problems. Specifically, it aims to at least partially improve the firepower in the inner annular zone of the burner.

[0005] In a first aspect, the present invention provides a direct-injection high-power burner, the burner including an inner ring region, the inner ring region including a first inner ring and a second inner ring located radially outside the first inner ring, the burner including: a nozzle group including a first inner ring nozzle; an ejector channel group including a first inner ring ejector channel; the burner having an open region corresponding to the first inner ring, the combustion gas reaching the open region via the first inner ring nozzle and the first inner ring ejector channel; wherein, the first inner ring ejector channel includes a first portion and a second portion along the gas intake direction, the second portion being arranged substantially vertically.

[0006] This configuration allows for direct vertical injection of the second part downstream of the first inner ring ejector channel, thereby increasing the firepower in the central area of ​​the burner. This can be achieved by directly connecting the first and second parts (fixed connection or integral molding) or indirectly connecting them through an intermediate section. The first part can be similar to the second part, extending roughly vertically, or it can have a certain angle with the second part, such as a horizontal pipe section, an inclined pipe section, or any reasonable structural form such as a combination of these. For example, the second part includes a horizontal pipe section, and the inclined pipe section near the connection point with the second part can be a structural form that allows for smooth connection, such as an inclined pipe section or an arc-shaped pipe section.

[0007] It is understood that those skilled in the art can determine the construction method of the inner ring area, its first / second inner ring, and the open area according to actual needs. For example, the open area can be formed by a flame cap seat or by a flame cap and a flame cap seat working together.

[0008] It should be noted that the "open zone" mentioned here should be understood as follows: the burner does not have a specially designed mixing chamber with a predetermined flow path (such as spiral entry) at the position corresponding to the first inner ring. Therefore, a concentrated flame can be generated near the outlet of the first inner ring ejector channel. This may include, but is not limited to: the outlet of the first inner ring ejector channel being completely open; the necessary shielding structure being provided near the outlet of the first inner ring ejector channel; and the flame outlet structure being provided near the first inner ring ejector channel to construct a corresponding flame pattern.

[0009] In one possible implementation of the above-mentioned burner, the first part extends horizontally or is inclined upward along the gas intake direction, and the first inner ring nozzle and the gas injection port are coaxially arranged with the first part.

[0010] With this configuration, while ensuring the direct injection effect, the gas injection nozzle is not directly facing the cookware or other cooking utensils above, thus effectively preventing the first inner ring nozzle corresponding to the direct injection from becoming clogged.

[0011] In one possible implementation of the above-described burner, the burner includes: a burner cap seat; and a second inner ring burner cap, which forms at least one inner ring mixing chamber with the burner cap seat at a position corresponding to the second inner ring; wherein the second inner ring burner cap has the open area formed at a position corresponding to the first inner ring.

[0012] This configuration, through the differentiated arrangement of the first and second inner rings, enriches the flame pattern and firepower combination effect in the inner ring zone. Since the open zone is unobstructed above, the firepower parameters of the direct jet can be better guaranteed.

[0013] It is understood that those skilled in the art can determine the structural form of the second inner ring flame cap, the number of its components (the relative positions of the components), the structural form / number of the inner ring mixing chamber formed by it and the flame cap seat, and the connection relationship between it and the flame cap seat, etc., according to actual needs. Obviously, if required, the first inner ring flame cap can also be provided above the open area. For example, the outer edge of the first inner ring flame cap is a ring structure that slopes downward from the inside to the outside, and the middle part of the first inner ring flame cap, corresponding to the flame area, is a large circular hole (equivalent to an unobstructed open area).

[0014] In one possible implementation of the burner described above, the second inner ring burner cap is provided with an auxiliary flame outlet structure at a position corresponding to the open area.

[0015] With this configuration, it is possible to achieve a stable flame quality corresponding to the first inner ring.

[0016] Clearly, besides flame stabilization, the auxiliary flame outlet structure also contributes to the burner's current firepower and flame state to some extent. Furthermore, in addition to the auxiliary flame outlet structure, flame outlet structures such as holes and slits can be installed at any reasonable location on the second inner ring burner cap to ensure the flame pattern of the second inner ring.

[0017] In one possible implementation of the above-mentioned burner, the first inner ring ejector channel is fixedly connected or integrally formed to the burner cap seat.

[0018] This configuration provides a possible way for the first inner ring ejector channel to form the flame cap assembly.

[0019] In one possible implementation of the above-mentioned burner, the burner is provided with a first inner ring ejector channel mounting structure, and the first inner ring ejector channel is disposed on the burner head assembly through the first inner ring ejector channel mounting structure.

[0020] This configuration allows for adjustments to the burner's injection method corresponding to the first ring zone by changing the first inner ring injection channel. For example, by changing the structure of the first inner ring injection channel, and using a single mold for the burner (excluding the first inner ring injection channel), the combustion performance of the inner ring zone, such as flame shape and heat output, can be adjusted. Since the available injection paths for the first inner ring injection channel are varied, in cases where the stove includes multiple burners, using different injection paths for the first inner ring injection channel can potentially allow different burners to provide differentiated combustion performance in their inner ring zones. Furthermore, by using the first inner ring injection channel independently and mounting it on the burner assembly using a bracket or support structure, different types of burners can be created by changing the first inner ring injection channel. For instance, a stove could include two burners, one a direct-injection high-power burner, and the other a different type, such as an anti-dry-burning burner (with reserved space for an anti-dry-burning sensor).

[0021] In one possible implementation of the above-described burner, the burner includes an outer annular region, and the burner includes at least one outer annular mixing chamber at a position corresponding to the outer annular region. Accordingly, the nozzle assembly includes at least one outer annular nozzle corresponding to at least one outer annular mixing chamber, and the ejector channel assembly includes at least one outer annular ejector channel corresponding to at least one outer annular mixing chamber. The gas gas reaches the corresponding outer annular mixing chamber via the outer annular nozzle and the corresponding outer annular ejector channel.

[0022] This configuration allows for a richer variety of flame patterns to be created by combining the outer and inner ring zones. Furthermore, with the firepower of the inner ring zone increased, the combination of the outer and inner ring zones further optimizes the burner's performance.

[0023] In one possible implementation of the burner described above, the outer annular mixing chambers include a plurality of chambers, and the burner cap assembly includes a gas distribution structure, thereby enabling the burner cap assembly to construct a plurality of the outer annular mixing chambers.

[0024] With this configuration, it is possible to create a richer flame pattern in the outer ring area of ​​the burner by combining multiple outer ring mixing chambers.

[0025] It is understood that those skilled in the art can determine the structural form of the gas distribution structure, the number of its components, and the structural form, number, and relative positions of the outer ring mixing chambers between them, according to actual needs. It can be a single structure or a combination of multiple components (such as multiple components connected indirectly to each other), and its connection with the cover / outer ring burner can be fixed or integrally formed.

[0026] In one possible implementation of the above-mentioned burner, the gas distribution structure is an integrally formed structure; or the gas distribution structure includes a first gas distribution structure and a second gas distribution structure that cooperate with each other, wherein the first gas distribution structure is integrally formed with the burner cap seat of the burner cap assembly, and the second gas distribution structure is integrally formed with the outer ring burner cap of the burner cap assembly.

[0027] In the case of a one-piece molding, the burner cap base, the gas distribution structure, and the outer ring burner cap are fixedly connected, thus constructing multiple outer ring mixing chambers. When the gas distribution structure includes a first gas distribution structure and a second gas distribution structure integrally molded with the burner cap base / outer ring burner cap, multiple outer ring mixing chambers are constructed through the cooperation of the first and second gas distribution structures. In this case, the structure of the gas distribution structure is "distributed" by improving the structure of the burner cap base / outer ring burner cap. Compared to multiple discrete structural forms including gas distribution rings and gas distribution plates, the one-piece molding structure effectively avoids problems such as poor sealing due to loose connections, which can affect the flame quality of the corresponding outer ring mixing chambers.

[0028] Taking a structure comprising a first gas separator and a second gas separator as an example, it is understood that, provided the formation of the outer annular mixing chamber can be guaranteed, those skilled in the art can determine the structural form, relative position, and connection method of the first / second gas separator according to actual needs. For example, the axial dimensional ratio of the first / second gas separator, the configuration of structural elements in the radial range, and the position / number of connection points between them can be flexibly selected according to actual needs. For instance, the first / second gas separator has approximately the same axial dimension, and the two abut against each other (and are subsequently fixed together) approximately along the same plane.

[0029] In a second aspect, the present invention provides a stove that includes the direct-injection high-power burner described in any of the preceding claims.

[0030] It is understood that this stove has all the technical effects of the direct injection high-power burner described in any of the foregoing items, and will not be repeated here. Attached Figure Description

[0031] The present invention will be described below in conjunction with the structural form of the outer ring region including three outer ring mixing chambers (two semi-circular ring chambers and one circular ring chamber), the second inner ring of the inner ring region including one inner ring mixing chamber, and the gas distribution structure including a first gas distribution structure and a second gas distribution structure. (See attached figures.)

[0032] Figure 1 This diagram shows a structural schematic of a direct-injection high-power burner according to an embodiment of the present invention;

[0033] Figure 2 This diagram shows an explosion schematic of a direct-injection high-power burner according to an embodiment of the present invention;

[0034] Figure 3 This diagram shows a cross-sectional view of a direct-injection high-power burner according to an embodiment of the present invention;

[0035] Figure 4 This is an exploded schematic diagram of the burner cap assembly in a direct-injection high-power burner according to an embodiment of the present invention;

[0036] Figure 5 This diagram shows a structural schematic of the outer ring flame cap in a direct-injection high-power burner according to an embodiment of the present invention;

[0037] Figure 6 This diagram shows a structural schematic of the second inner ring flame cap in a direct-injection high-power burner according to an embodiment of the present invention;

[0038] Figure 7 A cross-sectional schematic diagram showing the structure of the second inner ring flame cap in a direct-injection high-power burner according to an embodiment of the present invention; and

[0039] Figure 8 This diagram illustrates the installation method of the first inner ring ejector channel in a direct-injection high-power burner according to another embodiment of the present invention.

[0040] List of reference numerals in the attached diagram:

[0041] 100. Burner (direct injection high-power burner);

[0042] 1. Flame cap assembly;

[0043] 11. Inner Ring Road; 111. First Ring Road; 112. Second Outer Ring Road;

[0044] 12. Outer Ring Road; 121. First Outer Ring Road; 122. Second Outer Ring Road;

[0045] 131. Open area; 132. Inner ring mixing chamber; 133 (A, B), outer ring mixing chamber;

[0046] 14. Fire cover seat;

[0047] 151. Second inner ring flame cap; 152. Outer ring flame cap;

[0048] 161. First gas distribution structure; 162. Second gas distribution structure;

[0049] 181. First inner ring ejection channel; 1811. First part; 1812. Second part;

[0050] 182. Second inner ring ejection channel; 183. Outer ring ejection channel;

[0051] 19. Flame-out structure; 191. Auxiliary flame-out structure;

[0052] 2. Burner head assembly; 21. Burner head; 221. First inner ring nozzle; 222. Second inner ring nozzle; 223. Outer ring nozzle; 23. First inner ring ejector channel installation structure. Detailed Implementation

[0053] 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, structural form, and relative position of the outer / inner ring mixing chambers, such as including but not limited to: the three outer ring mixing chambers in the outer ring region being located in the same ring region (the outer ring region includes only one ring region); the two outer ring mixing chambers in the second outer ring region being the same or different (e.g., one larger than a semicircular ring, the other smaller than a semicircular ring); the first outer ring including two outer ring mixing chambers while the second outer ring including only one outer ring mixing chamber; both the first and second outer rings including one or more outer ring mixing chambers; and the inner ring mixing chambers including multiple ones.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] The following will refer to Figures 1 to 8 This utility model is described by at least a portion thereof.

[0058] Main reference Figures 1 to 8In one possible implementation, the stove typically includes a burner 100 and a gas path assembly. One or more burners are usually mounted on the cooktop. In the case of multiple burners, the operating parameters such as the on / off state and heat output of each burner can be independently controlled, allowing multiple burners to simultaneously cook the same or different types of ingredients. For example, the stove includes two burners. The burner 100 mainly includes a burner cap assembly 1 and a burner head assembly 2. The burner cap assembly 1 is disposed on the burner head assembly 2, which includes multiple nozzles. The gas path assembly includes at least one gas path capable of supplying gas to the nozzles. In this invention, the gas path assembly includes multiple gas paths corresponding to multiple nozzles. Based on this, the gas, after passing through the gas path of the gas path assembly and the corresponding nozzles of the burner head assembly, reaches the burner cap assembly, combusts, and produces a flame carrying heat. For example, an ignition needle (ignition function) and a thermocouple (flameout protection function) are provided on the burner. By controlling the ignition needle, the mixture of gas and air can be combusted and a flame produced. Gas circuit components typically include main on / off valves, on / off valves, proportional valves (or motor valves), etc. The main on / off valve is usually located on the main gas line of the gas circuit component and is mainly used to control the gas flow of the entire gas circuit. The on / off valve is mainly used to control the gas flow of related gas lines. 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 drive the gas flow of the corresponding gas line, thereby adjusting the burner's flame intensity.

[0059] In one possible implementation, the burner cap assembly 1 includes an inner ring region 11 located generally in the middle of the burner and an outer ring region 12 located radially outside the inner ring region. The inner ring region includes a first inner ring 111 and a second inner ring 112 located outside the first inner ring. The outer ring region 12 includes a first outer ring 121 and a second outer ring 122 located outside the first outer ring 121. In this example, the burner is an open region 131 at the position corresponding to the first inner ring, and the burner includes an inner ring mixing chamber 132 at the position corresponding to the second inner ring 112. The first outer ring 121 of the outer ring region 12 includes an outer ring mixing chamber (as denoted as outer ring mixing chamber 133A), and the second outer ring 122 of the outer ring region 12 includes two generally symmetrically distributed outer ring mixing chambers (as denoted as outer ring mixing chambers 133B).

[0060] In one possible implementation, the burner cap assembly 1 includes a burner cap seat 14 and a burner cap. The burner cap includes a second inner ring burner cap 151 corresponding to the second inner ring (no burner cap is provided above the open area corresponding to the first inner ring) and an outer ring burner cap 152 corresponding to the outer ring area. The second inner ring burner cap 151 and the outer ring burner cap 152 are respectively engaged with the burner cap seat 14 at the positions corresponding to the second inner ring and the outer ring area to form the outer ring mixing chamber (133A, 133B) of the inner ring mixing chamber 132.

[0061] In one possible implementation, the burner cap assembly 1 includes a gas distribution structure. In this embodiment, the gas distribution structure is an integrally formed structure that can be fixedly connected to the burner cap seat. For example, in this example, the gas distribution structure includes a first gas distribution structure 161 and a second gas distribution structure 162 that can be connected. The first gas distribution structure 161 is integrally formed with the lower burner cap seat, and the second gas distribution structure 162 is integrally formed with the upper outer ring burner cap 152. Through the cooperation of the gas distribution structure with the burner cap seat and the outer ring burner cap, it is mainly used to divide the outer ring into a first outer ring and a second outer ring, and to divide the second outer ring 122 circumferentially into two semi-annular cavities. By having one of the two semi-annular cavities in an operating state, the burner can generate a localized flame at the position corresponding to the second outer ring, thereby heating a localized area in the circumferential direction. Alternatively, the two semi-annular cavities can be in different operating states, thereby providing differentiated control for different localized areas.

[0062] The first and second gas distribution structures can be fixedly connected at multiple points using fasteners such as screws. Mounting holes are provided at locations such as the annular structure used to separate the first / second outer ring and the plate / block structure used to separate the two semi-annular cavities. The first / second gas distribution structures are fixedly connected by fasteners fitting into these mounting holes. Clearly, the structural forms of the burner cap, burner cap seat, and the first / second gas distribution structures, as well as the fitting / fixing methods involved in forming the outer annular mixing chamber, can be flexibly adjusted according to actual needs.

[0063] In one possible implementation, the flame cap assembly 1 includes an ejector channel group, which includes a first inner ring ejector channel 181 corresponding to the first inner ring, a second inner ring ejector channel 182 corresponding to the second inner ring, and three outer ring ejector channels 183 corresponding to the outer ring area. The outlet of the first inner ring ejector channel 181 is aligned with the open area 131, the outlet of the second inner ring ejector channel 182 is connected to the inner ring mixing chamber 132, and the three outer ring ejector channels 183 are respectively connected to the three outer ring mixing chambers.

[0064] In this example, the first inner ring ejector channel 181, the second inner ring ejector channel 182, and the three outer ring ejector channels 183 are all integrally formed with the burner cap seat. The first inner ring ejector channel 181 and the second inner ring ejector channel 182 are centrally located. The installation directions of the gas injection ports of the first / second inner ring nozzles corresponding to the two are roughly the same. The structures of the three outer ring ejector channels are roughly the same. For example, the ejection direction is roughly a combination of horizontal and upward tilt (the gas ejected from the nozzle first enters the corresponding ejector channel roughly horizontally, and then climbs to the corresponding mixing chamber in an upward tilt). The first inner ring ejector channel 181 includes a lower first part 1811 and an upper second part 1812. Before climbing, the second inner ring ejector channel 182 is approximately parallel to the first part 1811 of the first inner ring ejector channel 181. The first part 1811 is a structure that is inclined upward along the air intake direction. The second part 1812 is connected to the first part 1811 by any reasonable means such as socketing, and the second part 1812 extends approximately vertically. In this way, by directly injecting the mixed gas through the flame outlet structure connected to the open area by the second part, which extends vertically (saving the kinetic energy loss caused by the change of the ejector path), and saves the kinetic energy loss caused by the mixing chamber, the firepower corresponding to the first inner ring flame can be improved. The inclined setting of the first part allows things such as overflowing liquid, oil stains, and food residue to flow out along the first part under the action of gravity, while also reducing the kinetic energy loss of the gas used for direct injection as it travels through the first part, thus ensuring the direct injection effect.

[0065] Obviously, the structural form of the ejector channel group is only an exemplary description. Those skilled in the art can determine the structural form, ejection direction, and relative position of each ejector channel according to actual needs. For example, the first inner ring ejector channel and the second inner ring ejector channel can be set up in a concentrated manner or discretely. Their structural form and ejection direction can be the same or different. Similarly, the structural form and ejection direction of the three outer ring ejector channels can be the same or different. For example, the second inner ring ejector channel and one of the outer ring ejector channels are set up in a concentrated manner, and the ejection direction is roughly horizontal.

[0066] The specific structural forms of the first and second parts, their matching methods (such as fixed connection or integral molding), and the specific structural form of the first inner ring ejection channel they form can be flexibly adjusted according to actual needs. For example, the first and second parts can be directly matched, or they can be indirectly matched to form the first inner ring ejection channel with the help of an intermediate structure such as another sleeve.

[0067] Main reference Figure 8In another possible implementation, the first inner ring ejector channel 181 is replaceably disposed on the burner head base 21 of the burner head assembly 2. As in this example, a separate first inner ring ejector channel mounting structure 23 is configured for the first inner ring ejector channel 181, and the first inner ring ejector channel 181 is disposed on the burner head base 21 via the first inner ring ejector channel mounting structure 23. In this way, by replacing the first inner ring ejector channel 181, it is possible to adjust the combustion performance of the burner, such as in the case where the stove includes multiple burners, the combustion properties of the multiple burners can be different.

[0068] In one possible implementation, the burner cap assembly 1 includes a flame outlet structure 19, which is primarily used to form a corresponding flame pattern. For example, in this example, the second inner ring burner cap 151 has flame outlet holes arranged in a generally annular structure (corresponding to the inner ring mixing chamber 132) near the upper side of the open area. The outer ring burner cap 152 has a flame outlet structure including flame outlet holes and flame outlet slits at the outer ring mixing chamber location. Thus, when the ignition needle is controlled, the mixed gas arriving at the open area via the first ejector channel can be directly delivered to the bottom of the cookware or other cooking utensils via the upper flame outlet structure. Furthermore, the vertically upward short-distance ejection can generate higher heat, thereby enabling the inner ring area of ​​the burner to provide higher heat. The flames generated by the first inner ring mixing chamber and each outer ring mixing chamber are released via the corresponding flame outlet structure, thus providing the heat-carrying flame pattern required for cooking to the cookware placed on the burner. In this way, by combining the outer ring zone with the inner ring zone containing differentiated ejectors, it is expected to improve the burner's firepower and enrich its flame patterns. For example, by adjusting the gas flow rate in the corresponding gas path, the firepower parameters of the flame in the corresponding zone can be adjusted.

[0069] In one possible implementation, the second inner ring flame cap 151 has a roughly trumpet-shaped structure that expands upwards in the area corresponding to the open zone. An auxiliary flame outlet structure 191 is provided in this area; for example, in this example, the auxiliary flame outlet structure is roughly a group of holes arranged circumferentially. The flame corresponding to the auxiliary flame outlet structure can stabilize the direct-injection flame corresponding to the first inner ring. Of course, in addition to stabilizing the flame, it also serves to some extent the construction of the flame shape of the second inner ring. Clearly, the specific structural form of the second inner ring flame cap 151, and the forms of the flame outlet structure 191 and the auxiliary flame outlet structure 191 provided thereon can be flexibly selected according to actual needs.

[0070] In one possible implementation, the burner assembly 2 includes a burner base 21 and a nozzle assembly disposed on the burner base 21. In this embodiment, the nozzle assembly includes a first inner ring nozzle 221 corresponding to the first inner ring, a second inner ring nozzle 222 corresponding to the second inner ring, and three outer ring nozzles 223 corresponding to the outer ring area. In this example, the burner base 21 is generally a support frame, and the first inner ring nozzle 221 and the second inner ring nozzle 222 are centrally located, with their gas injection ports angled upwards, such as at an angle less than 30° (e.g., 15°) to the horizontal direction. In this way, the gas ejected from the first inner ring nozzle is injected into the first inner ring ejector channel in a combination of upward and vertical injection, forming a mixed gas mixture capable of direct combustion in the open area, thereby generating a high-power direct-injection flame at the position of the first inner ring. The gas ejected from the second inner ring nozzle and the outer ring nozzles enters the mixing chamber through their respective ejector channels and then generates the desired flame shape through the ignition structure. For example, the burner body is provided with an air intake channel at the position corresponding to each nozzle. The gas in the corresponding gas path of the gas path assembly can reach the corresponding nozzle through the air intake channel. The gas ejected from the first inner ring nozzle generates a direct injection flame in the open area through the first inner ring ejector channel. The gas ejected from other nozzles generates a corresponding flame shape through the corresponding ejector channel, the mixing chamber, and the flame outlet structure.

[0071] Obviously, the structural form of the burner head base / each nozzle, the installation method and position of the nozzles on the burner head base, and the relative positions of the nozzles can be flexibly adjusted according to actual needs. For example, the structural forms of each nozzle can be the same or different, and their installation position on the burner head base, installation method, and gas injection direction can all be adjusted according to actual needs. In this example, the structural forms of each nozzle are roughly the same, but obviously, they can also be differentiated.

[0072] As can be seen, in the preferred embodiment of this utility model, for the first inner ring of the inner ring region, by setting the second part of the first inner ring ejector channel to extend approximately vertically and setting the downstream side of the first inner ring ejector channel to an open zone, the firepower of the first inner ring is improved, allowing the burner to provide a strong flame through direct injection. By setting the first part to an upwardly inclined structure, the gas injection port of the first inner ring nozzle is not directly facing the first inner ring, thus greatly reducing the possibility of blockage. For example, a burner cap can be eliminated in the open zone, thus significantly reducing resistance. Furthermore, liquid overflowing from the bottom of the pot can be discharged along the first part under the action of gravity. Based on this, through the differentiated combination of the first and second inner rings (open zone and inner ring mixing chamber), a richer variety of flame patterns can be produced while ensuring the firepower of the inner ring region.

[0073] Furthermore, by setting multiple outer ring mixing chambers in the outer ring zone, it is expected that the combination of the outer and inner ring zones will enhance the firepower in the inner ring center zone of the burner, enabling the burner to produce more diverse flame patterns, such as eccentric flames. Specifically, for the outer ring zone, the inclusion of first and second gas distribution structures integrally formed with the burner cap seat / outer ring burner cap ensures the reliable formation of each outer ring mixing chamber.

[0074] The technical solution of this utility model has been described in conjunction with 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 direct injection torch, characterized in that, The burner includes an inner ring region, which comprises a first inner ring and a second inner ring located radially outside the first inner ring. The burner includes: A nozzle assembly, the nozzle assembly including a first inner ring nozzle; An ejector channel group, wherein the ejector channel group includes a first inner ring ejector channel; The burner has an open zone at the position corresponding to the first inner ring, and the gas reaches the open zone through the first inner ring nozzle and the first inner ring ejector channel; The first inner ring ejector channel includes a first part and a second part along the gas intake direction, with the second part being arranged approximately vertically.

2. The burner of claim 1, wherein The first part extends horizontally or is inclined upwards along the gas intake direction. The first inner ring nozzle and the gas injection port are coaxially arranged with the first part.

3. The burner of claim 2, wherein The burner includes: Fire cap seat; and The second inner ring flame cap and the flame cap seat form at least one inner ring mixing chamber at a position corresponding to the second inner ring; The second inner ring fire cap has an open area formed at a position corresponding to the first inner ring.

4. The burner according to claim 3, characterized in that, The second inner ring flame cap is provided with an auxiliary flame outlet structure at the position corresponding to the open area.

5. The burner according to claim 3, characterized in that, The first inner ring ejector channel is fixedly connected or integrally formed on the flame cap seat.

6. The burner according to claim 3, characterized in that, The burner is provided with a first inner ring ejector channel mounting structure, and the first inner ring ejector channel is mounted on the burner head assembly through the first inner ring ejector channel mounting structure.

7. The burner according to claim 1, characterized in that, The burner includes an outer annular region, and the burner includes at least one outer annular mixing chamber at a location corresponding to the outer annular region. Accordingly, The nozzle assembly includes at least one outer ring nozzle corresponding to at least one outer ring mixing chamber, and the ejector channel assembly includes at least one outer ring ejector channel corresponding to at least one outer ring mixing chamber. The gas passes through the outer ring nozzle and the corresponding outer ring ejector channel to the corresponding outer ring mixing chamber.

8. The burner according to claim 7, characterized in that, The outer annular mixing chamber includes multiple chambers. The burner cap assembly includes a gas distribution structure, thereby enabling the burner cap assembly to construct multiple outer annular mixing chambers.

9. The burner according to claim 8, characterized in that, The gas distribution structure is a one-piece molded structure; or The gas distribution structure includes a first gas distribution structure and a second gas distribution structure that cooperate with each other. The first gas distribution structure is integrally formed with the flame cap seat of the flame cap assembly, and the second gas distribution structure is integrally formed with the outer ring flame cap of the flame cap assembly.

10. A stove, characterized in that, The stove includes the direct-injection high-power burner as described in any one of claims 1 to 9.

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