Outer ring fire cover, combustor and gas stove

Abstract

The utility model relates to the technical field of kitchen utensils, and discloses an outer ring fire cover, a combustor and a gas cooker. The gas cooker comprises a combustor, the combustor comprises an outer ring fire cover, the outer ring fire cover comprises an upper ring cover, a middle ring cover and a lower ring cover which are sequentially stacked from top to bottom, a main fire circular seam is formed between the outer ring circumferential surface of the upper ring cover and the inner ring circumferential surface of the middle ring cover, and a flame stabilizing circular seam is formed between the outer ring circumferential surface of the middle ring cover and the inner ring circumferential surface of the lower ring cover; the outer ring fire cover further comprises a plurality of locking assemblies, the locking assemblies are used for locking the upper ring cover, the middle ring cover and the lower ring cover, the multiple locking assemblies are arranged in the circumferential direction of the outer ring fire cover at intervals, and the main fire circular seam and the flame stabilizing circular seam are each divided into at least two sections which are correspondingly arranged. The outer ring fire cover is stable in combustion and low in manufacturing difficulty, the locking assembly can enable flame of the outer ring fire cover to have a partition area in the circumferential direction so as to avoid foot pieces of a pot frame, the foot pieces are prevented from being burnt, the smoke concentration is reduced, and potential safety hazards are reduced.

Description

Technical Field

[0001] This utility model relates to the field of kitchen utensils technology, and in particular to an outer ring burner cap, a burner, and a gas stove. Background Technology

[0002] Gas stoves are essential kitchen cooking appliances for daily household use. A gas stove includes a burner, which includes a burner cap. The burner cap has flame holes. The mixture of gas and air is discharged from the flame holes and burned. The combustion stability of the mixture at the flame holes affects the user experience.

[0003] Because the composition and pressure of collectively supplied gas are unstable, gas stoves are prone to unstable combustion during use. When the gas supply pressure is too high, the flow rate of the gas mixture out of the burner holes increases, leading to problems such as flame lift-off and unstable combustion, resulting in a poor user experience. Related technologies use two concentric rings of annular burner holes on the burner cap to ensure combustion stability. However, this design increases the overall manufacturing difficulty of the burner cap. Furthermore, the continuous circumferential flame from these holes can continuously scorch the pot rack's feet, generating excessive smoke and posing a safety hazard. Utility Model Content

[0004] One objective of this invention is to provide an outer ring flame cap that offers stable combustion, is easy to manufacture, and whose locking assembly allows the flame of the outer ring flame cap to have a circumferentially partitioned area to avoid the foot plates of the pot rack, thus preventing the foot plates from being burned, reducing smoke concentration, and reducing safety hazards.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The outer ring flame cap includes an upper ring cap, a middle ring cap, and a lower ring cap stacked from top to bottom. The outer circumferential surface of the upper ring cap and the inner circumferential surface of the middle ring cap form a main flame ring gap, and the outer circumferential surface of the middle ring cap and the inner circumferential surface of the lower ring cap form a flame stabilizing ring gap.

[0007] The outer ring flame cap includes a plurality of locking components, which are used to lock the upper ring cap, the middle ring cap and the lower ring cap. The plurality of locking components are arranged at intervals along the circumference of the outer ring flame cap and divide the main flame ring seam and the flame stabilizing ring seam into at least two corresponding segments.

[0008] As an optional solution, the locking component includes:

[0009] The upper locking part is connected to the outer circumferential surface of the upper ring cover or the inner circumferential surface of the middle ring cover, and the upper locking part is separated from the main fire ring seam;

[0010] The central locking part is connected to the outer circumferential surface of the central ring cover or the inner circumferential surface of the lower ring, and the central locking part is separated from the flame stabilizing ring seam.

[0011] As an alternative, the upper end of the upper locking part is connected to the outer circumferential surface of the upper ring cover, and the upper end of the middle locking part is connected to the outer circumferential surface of the middle ring cover;

[0012] The locking assembly further includes a fastener and a lower locking part connected to the lower ring cover. The lower end of the middle locking part is stacked on the lower locking part, and the lower end of the upper locking part is stacked on the middle locking part. The lower locking part, the middle locking part, and the upper locking part are connected by a fastener.

[0013] As an optional solution, a communicating cavity is formed between the lower end of the outer circumferential surface of the upper ring cover and the lower end of the inner circumferential surface of the lower ring cover, and both the main flame ring seam and the flame stabilizing ring seam are connected to the communicating cavity;

[0014] The locking assembly located within the communicating cavity has guide surfaces on both sides along the circumferential direction, and the guide surfaces are configured to guide gas to flow to both sides of the locking assembly along the circumferential direction.

[0015] As an alternative, both guide surfaces are inclined planes, and in an upward direction, the two guide surfaces extend away from each other.

[0016] The angle between the guide surface and the horizontal direction is β, where 15°≤β≤60°.

[0017] As an alternative, the outlet height of the flame stabilizing ring seam is lower than the outlet height of the main flame ring seam.

[0018] The second objective of this invention is to provide a burner that, by employing the aforementioned outer ring flame cap, achieves stable combustion, is easy to manufacture, and does not damage the pot frame.

[0019] To achieve this objective, the present invention adopts the following technical solution:

[0020] The burner includes a burner head, a gas distribution seat, and an outer ring flame cover. The gas distribution seat covers the burner head, and the outer ring flame cover covers the gas distribution seat. An outer ring mixing channel is provided inside the burner head, and a gas distribution channel is provided on the gas distribution seat. The outer ring mixing channel is connected to the gas distribution channel. The main flame ring slit and the flame stabilizing ring slit are both connected to the gas distribution channel.

[0021] As an optional solution, the upper side of the burner head is provided with a number of outer ring gas outlets arranged in a circumferential direction, the gas distribution seat is provided with a corresponding number of air inlets, each air inlet is provided above one of the outer ring gas outlets, and each locking component is provided above one of the air inlets.

[0022] The third objective of this utility model is to provide a gas stove that, by employing the aforementioned burner, achieves stable combustion, is easy to manufacture, and does not damage the pot rack.

[0023] To achieve this objective, the present invention adopts the following technical solution:

[0024] A gas stove, including at least one burner as claimed in the claim.

[0025] As an optional solution, the gas stove also includes a pot rack, which is arranged around the outer periphery of the outer ring burner cap. The pot rack includes a plurality of feet for supporting the pot, and each foot is disposed opposite to one of the locking components.

[0026] The beneficial effects of this utility model are:

[0027] The outer ring burner cap of this utility model consists of an upper ring cap, a middle ring cap, and a lower ring cap stacked from top to bottom to form a main flame ring seam and a flame stabilizing ring seam. The main flame ring seam and the flame stabilizing ring seam are the flame outlets of the outer ring burner cap. The ring-shaped flame outlets make the gas discharge more continuous and uniform, which is beneficial to improving the uniformity and stability of combustion. The upper ring cap, the middle ring cap, and the lower ring cap are locked together by a locking assembly, so that the main flame ring seam and the flame stabilizing ring seam are naturally assembled without additional processing, which greatly reduces the processing difficulty, reduces the number of process steps, and thus reduces the manufacturing cost of the outer ring burner cap. In addition, the locking part divides the main flame ring seam and the flame stabilizing ring seam into at least two corresponding sections, so that the flame of the outer ring burner cap has a circumferentially isolated area. When the burner is working, the isolated area does not produce flame, which can avoid the foot plates of the pot rack, prevent the foot plates from being burned, reduce the flue gas concentration, and reduce safety hazards.

[0028] The burner of this invention, by adopting the aforementioned outer ring flame cap, achieves stable combustion, is easy to manufacture, and will not damage the pot frame.

[0029] The gas stove of this utility model, by adopting the above-mentioned burner, has stable combustion, is easy to manufacture, and will not damage the pot rack. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the burner provided in a specific embodiment of the present invention;

[0031] Figure 2 This is an exploded view of the burner provided in a specific embodiment of this utility model;

[0032] Figure 3 This is a longitudinal sectional view of the burner provided in a specific embodiment of this utility model. Figure 1 ;

[0033] Figure 4 In one embodiment Figure 3 Enlarged view of point A in the image;

[0034] Figure 5 In another embodiment Figure 3 Enlarged view of point A in the image.

[0035] Figure 6 This is an exploded view of the outer ring flame cap provided in a specific embodiment of this utility model;

[0036] Figure 7 This is a schematic diagram of the structure of the burner and the pot frame when they are combined, according to a specific embodiment of this utility model;

[0037] Figure 8 This is a cross-sectional view of the burner at the locking assembly according to a specific embodiment of the present invention. Figure 2 ;

[0038] Figure 9 This is a cross-sectional view of the burner at the locking assembly in one embodiment;

[0039] Figure 10 This is a cross-sectional view of the burner at the locking assembly in another embodiment.

[0040] In the picture:

[0041] 100. Burner;

[0042] 10. Outer ring flame cap; 11. Upper ring cap; 12. Middle ring cap; 121. Spacer section; 13. Lower ring cap; 14. Main flame ring seam; 15. Flame stabilizing ring seam; 16. Locking assembly; 161. Upper locking part; 162. Middle locking part; 163. Lower locking part; 164. Guide surface; 165. Fastener; 17. Conical surface; 18. Connecting cavity;

[0043] 20. Inner ring flame cap; 21. Inner ring flame hole;

[0044] 30. Burner head; 31. Outer ring mixing channel; 311. Outer ring gas outlet; 32. Inner ring mixing channel;

[0045] 40. Gas distribution seat; 41. Gas distribution channel; 42. Air inlet;

[0046] 200. Pot frame; 210. Main body; 220. Foot piece. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0048] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0051] This embodiment provides an outer ring burner cap, a burner, and a gas stove, the gas stove including at least one burner 100. For example... Figures 1-3As shown, the burner 100 includes a burner head 30, a gas distribution seat 40, an inner ring burner cap 20, and an outer ring burner cap 10. The gas distribution seat 40 contains an outer ring mixing channel 31 and an inner ring mixing channel 32. The inlet of the outer ring mixing channel 31 connects to an outer ring nozzle, and the outer ring outlet 311 of the outer ring mixing channel 31 extends to the upper side of the burner head 30. The inlet of the inner ring mixing channel 32 connects to an inner ring nozzle, and the inner ring outlet of the inner ring mixing channel 32 also extends to the upper side of the burner head 30. The gas distribution seat 40 contains a gas distribution channel 41, which has an inlet 42. The gas distribution seat 40 covers the burner head 30 so that the inlet 42 is opposite to the outer ring outlet 311, thereby connecting the outer ring mixing channel 31 with the gas distribution channel 41. The outer ring burner cap 10 is annular and has a communicating cavity 18. The outer ring burner cap 10 also has a main flame ring seam 14 and a flame stabilizing ring seam 15, which are coaxially arranged and both communicate with the communicating cavity 18. The outer ring burner cap 10 covers the gas distribution seat 40, thereby connecting the communicating cavity 18 with the gas distribution channel 41. In other words, the outer ring mixing channel 31, the gas distribution channel 41, and the communicating cavity 18 are sequentially connected. The inner ring burner cap 20 covers the burner head 30, and the multiple inner ring flame holes 21 on the inner ring burner cap 20 are all connected with the inner ring gas outlet.

[0052] like Figure 3 As shown, the working principle of the burner 100 is as follows: the outer ring nozzle injects gas into the outer ring mixing channel 31. During this process, primary air is injected into the outer ring mixing channel 31. The primary air and gas mix in the outer ring mixing channel 31 and then enter the gas distribution channel 41. The mixed gas flows and mixes in the gas distribution channel 41 and then enters the connecting cavity 18. Finally, it is discharged from the main flame ring slit 14 and the flame stabilizing ring slit 15 and burned. At the same time, the inner ring nozzle injects gas into the inner ring mixing channel 32. During this process, primary air is injected into the outer ring mixing channel 31. The primary air and gas mix in the inner ring mixing channel 32 and then enter the inner ring burner cap 20. Finally, it is discharged from each inner ring burner hole 21 and burned.

[0053] In this embodiment, as Figure 2 As shown, four outer ring gas outlets 311 are provided and evenly distributed along the circumference of the burner head 30. Correspondingly, four air inlets 42 are provided on the gas distribution seat 40, each air inlet 42 corresponding to one outer ring gas outlet 311. That is to say, the mixed gas in the outer ring mixing channel 31 can enter the gas distribution channel 41 from four positions, which is conducive to the uniform distribution of gas along the circumference. In other embodiments, the number of outer ring gas outlets 311 and air inlets 42 can be flexibly set according to needs, and no specific limitation is made here.

[0054] like Figure 3 and Figure 4As shown, the height of the outlet of the flame stabilizing annular slit 15 is lower than the height of the outlet of the main flame annular slit 14. The width of the main flame annular slit 14 is D1, and the width of the flame stabilizing annular slit 15 is D2, where D1 > D2. In this embodiment, the outer ring flame cap 10, because both the main flame annular slit 14 and the flame stabilizing annular slit 15, which are used to exhaust gas for combustion, are constructed in annular shape, makes the exhaust of gas in the circumferential direction more continuous and uniform, which is beneficial to improving the uniformity and stability of combustion. Because the width of the main flame annular slit 14 is greater than the width of the flame stabilizing annular slit 15, the main flame at the main flame annular slit 14 is more robust and stable. Because the outlet of the flame stabilizing annular slit 15 is lower than the outlet of the main flame annular slit 14, the flame stabilizing flame at the flame stabilizing annular slit 15 is located at the root of the main flame and intersects with the main flame as much as possible. This not only expands the overall flame area but also stabilizes the main flame, thereby greatly reducing the flame lift-off phenomenon caused by instability in the gas supply composition and gas pressure. In this embodiment, the burner 100 and gas stove, by adopting the aforementioned outer ring burner cap 10, produce a uniform and stable flame during combustion, and can avoid flame lift-off problems.

[0055] like Figure 4 As shown, the upper side of the outer ring flame cap 10 has a conical surface 17. The cross-section of the conical surface 17 gradually decreases from bottom to top. A flame-stabilizing ring slit 15 is arranged around the outer periphery of the main flame ring slit 14, and both the outlets of the flame-stabilizing ring slit 15 and the main flame ring slit 14 extend to the conical surface 17. This arrangement ensures that the outlet of the flame-stabilizing ring slit 15 is lower than the outlet of the main flame ring slit 14, thereby ensuring that the ring slit fire at the flame-stabilizing ring slit 15 is located in the root region of the main flame.

[0056] like Figure 4 As shown, the main flame annular slit 14 extends obliquely outward in an upward direction, and the flame stabilizing annular slit 15 extends obliquely outward in an upward direction. This arrangement ensures that both the main flame of the main flame annular slit 14 and the annular flame of the flame stabilizing annular slit 15 are obliquely outward, thus guaranteeing a large flame area for the burner 100. It also ensures that the annular flame intersects with the main flame as much as possible, thereby guaranteeing a flame stabilizing effect on the main flame and improving the combustion stability of the burner 100. Optionally, in this embodiment, the extension direction of the main flame annular slit 14 is parallel to the oblique direction of the flame stabilizing annular slit 15. In other embodiments, the extension direction of the main flame annular slit 14 and the oblique direction of the flame stabilizing annular slit 15 may have a certain angle, which is not specifically limited here.

[0057] like Figure 4As shown, the width of the main flame ring slit 14 is 1.5mm ≤ D1 ≤ 3mm. Optionally, the dimension of D1 can be 1.5mm, 2mm, 2.5mm, 3mm, etc. The width of the flame stabilizing ring slit 15 is 0.5mm ≤ D2 ≤ 2mm. Optionally, the dimension of D2 can be 0.5mm, 1mm, 1.5mm, 2mm, etc. In this embodiment, the width D1 of the main flame ring slit 14 is 2mm, and the width D2 of the flame stabilizing ring slit 15 is 1mm.

[0058] like Figure 4 As shown, a spacer 121 is provided between the main flame ring slit 14 and the flame stabilizing ring slit 15. Along the arrangement direction of the outlets of the main flame ring slit 14 and the flame stabilizing ring slit 15 (i.e., the width direction of the main flame ring slit 14 and the width direction of the flame stabilizing ring slit 15), the width of the spacer 121 is D3, and the ratio of D3 to D2 is 0.8-1.2. This arrangement ensures that the distance between the flame stabilizing ring slit 15 and the main flame ring slit 14 is moderate. It avoids the problems of incomplete combustion and increased flue gas caused by secondary air competition due to the two slits being too close, and also avoids the problem of poor flame stabilization due to the flame stabilizing flame not intersecting with the main flame due to the distance being too far, thus ensuring the overall combustion completeness and stability of the burner 100. Optionally, the ratio of D3 to D2 can be 0.8, 0.9, 1, 1.1, 1.2, etc.

[0059] In some embodiments, such as Figure 4 As shown, along the direction of gas flow ( Figure 4 (As indicated by the dotted arrow in the diagram), the width of the main flame ring slit 14 remains constant, as does the width of the flame stabilizing ring slit 15. The depth of the main flame ring slit 14 is W1, and the depth of the flame stabilizing ring slit 15 is W2, where W1 is greater than W2. This structural arrangement increases the flow path of the combustion gas through the main flame ring slit 14, reducing the gas velocity at the outlet of the main flame ring slit 14. This fundamentally reduces flame lift-off from the main flame and improves the combustion stability of the burner 100.

[0060] In this embodiment, This size setting ensures that the width-to-depth ratio of the main flame ring slit 14 and the flame stabilizing ring slit 15 is consistent, so that the friction resistance of the gas mixture entering the main flame ring slit 14 and the flame stabilizing ring slit 15 is approximately equal. This results in the gas flow velocity at the outlet of the main flame ring slit 14 being more consistent with the gas flow velocity at the outlet of the flame stabilizing ring slit 15, thereby ensuring that the flame has a high combustion state.

[0061] In some embodiments, such as Figure 5 As shown, along the direction of gas flow ( Figure 5As indicated by the dashed arrow in the diagram, the width of the main flame annular slit 14 gradually increases. This further reduces the flow velocity of the mixed gas within the main flame annular slit 14, thereby reducing flame lift-off and improving combustion stability. Optionally, in this embodiment, the included angle between the two sidewalls of the main flame annular slit 14 is α, where 1° ≤ α ≤ 5°. Specifically, α can take values ​​of 1°, 2°, 3°, 4°, or 5°.

[0062] In order to form an outer ring flame cap 10 with the aforementioned main flame ring seam 14 and flame stabilizing ring seam 15, as follows: Figures 2-3 , Figures 7-8 As shown, the outer ring flame cover 10 consists of an upper ring cover 11, a middle ring cover 12, and a lower ring cover 13 stacked sequentially from top to bottom. The outer ring flame cover 10 also includes several locking components 16. A main flame ring seam 14 is formed between the upper end of the outer circumference of the upper ring cover 11 and the inner circumference of the middle ring cover 12. A flame stabilizing ring seam 15 is formed between the upper end of the outer circumference of the middle ring cover 12 and the upper end of the inner circumference of the lower ring cover 13. A connecting cavity 18 is formed between the lower end of the outer circumference of the upper ring cover 11 and the lower end of the inner circumference of the lower ring cover 13, thereby ensuring that both the main flame ring seam 14 and the flame stabilizing ring seam 15 are connected to the connecting cavity 18. The locking components 16 are used to lock the upper ring cover 11, the middle ring cover 12, and the lower ring cover 13. Several locking components 16 are spaced apart circumferentially along the outer ring flame cover 10, and each of the main flame ring seam 14 and the flame stabilizing ring seam 15 is divided into at least two corresponding segments. It should be noted that "separated into at least two corresponding segments" means that the multiple segments of the main fire ring slit 14 and the multiple segments of the flame stabilizing ring slit 15 are set in a one-to-one correspondence in the circumferential direction, thereby ensuring that the flame generated by the entire outer ring fire cover 10 is separated in the circumferential direction.

[0063] In this embodiment, the outer ring burner cap 10, with its upper ring cap 11, middle ring cap 12, and lower ring cap 13 locked together by a locking assembly 16, allows the main flame ring seam 14 and the flame stabilizing ring seam 15 to be naturally joined together without additional processing. This significantly reduces processing difficulty and steps, thereby lowering the manufacturing cost of the outer ring burner cap 10. Furthermore, the locking assembly divides the main flame ring seam 14 and the flame stabilizing ring seam 15 into at least two corresponding segments, creating a circumferentially isolated area for the flame of the outer ring burner cap 10. When the burner 100 is operating, this isolated area does not produce a flame, thus avoiding damage to the foot piece 220 of the pot rack 200 of the gas stove, reducing smoke concentration, and minimizing safety hazards. The burner 100 and gas stove of this embodiment, by employing the aforementioned outer ring burner cap 10, achieve stable combustion, have low manufacturing difficulty, and do not damage the pot rack 200.

[0064] In this embodiment, as Figure 7As shown, the pot support 200 of the gas stove is arranged around the outer periphery of the outer burner cap 10. Specifically, the pot support 200 includes a main body 210 and several feet 220. The main body 210 is arranged around the outer periphery of the outer burner cap 10, and the feet 220 are spaced apart circumferentially along the main body 210. The feet 220 protrude from the main body 210 and are used to support the pot. Each foot 220 is correspondingly positioned opposite a locking component 16. This ensures that when the gas stove is working, each foot 220 is protected from direct burns by the flame, reducing smoke generation and improving the safety of the gas stove.

[0065] In this embodiment, the pot rack 200 is provided with four foot pieces 220. Correspondingly, the outer ring fire cover 10 includes four locking components 16, which are respectively provided with the four foot pieces 220.

[0066] In this embodiment, as Figure 7 As shown, the locking assembly 16 includes an upper locking part 161 and a middle locking part 162. The upper locking part 161 is connected to the outer circumferential surface of the upper ring cover 11 and separates the main flame ring seam 14. The middle locking part 162 is connected to the outer circumferential surface of the middle ring cover 12 and separates the flame stabilizing ring seam 15. By providing the upper locking part 161 and the middle locking part 162, the separation of the main flame ring seam 14 and the flame stabilizing ring seam 15 can be achieved respectively. It is understood that when processing the upper locking part 161 and the middle locking part 162, assembly gaps can be reserved between the upper locking part 161 and the middle ring cover 12, and between the middle locking part 162 and the lower ring cover 13 to ensure smooth assembly. Specifically, the above assembly gaps are all no greater than 0.2 mm.

[0067] In other embodiments, the upper locking part 161 can be connected to the inner circumferential surface of the middle ring cover 12, and the middle locking part 162 can be connected to the inner circumferential surface of the lower ring cover 13, thus achieving separation of the main flame ring seam 14 and the flame stabilizing ring seam 15.

[0068] like Figure 6 , Figure 8 and Figure 9 As shown, the locking assembly 16 also includes a fastener 165 and a lower locking part 163. The lower locking part 163 is connected to the lower ring cover 13. The lower end of the middle locking part 162 overlaps the lower locking part 163, and the lower end of the upper locking part 161 overlaps the middle locking part 162. The lower locking part 163, the middle locking part 162, and the upper locking part 161 are connected by the fastener 165. In this way, the upper ring cover 11, the middle ring cover 12, and the outer ring cover can be locked together, ensuring the structural integrity of the entire outer ring cover 10.

[0069] In this embodiment, the upper locking portion 161 is fixedly connected to or integrally formed with the upper ring cover 11. Specifically, the upper end of the upper locking portion 161 is connected to the outer circumferential surface of the upper ring cover 11, and the lower end extends downward along the outer circumferential surface of the upper ring cover 11 into the communicating cavity 18. The middle locking portion 162 is fixedly connected to or integrally formed with the middle ring cover 12. Specifically, the middle locking portion 162 is L-shaped, with its upper end connected to the middle ring cover 12 and its lower end extending into the communicating cavity 18. The lower locking portion 163 is connected to or integrally formed with the lower ring cover 13. Specifically, the lower locking portion 163 is L-shaped, with its upper end connected to the inner circumferential surface of the lower ring cover 13 and its lower end located within the communicating cavity 18.

[0070] like Figure 8 As shown, the fastener 165 passes through the lower end of the lower locking part 163, the lower end of the middle locking part 162, and is threadedly connected to the lower end of the upper locking part 161 from bottom to top. This arrangement makes the structure simple and easy to assemble. Moreover, the fastener 165 is hidden inside the outer ring cover 10, which is not only aesthetically pleasing but also prevents users from arbitrarily disassembling the locking parts, thus improving the safety of use.

[0071] Preferably, such as Figure 2 , Figure 8 and Figure 9 As shown, the number of the outer ring gas outlet 311 on the upper side of the burner head 30, the number of the air inlet 42 on the gas distribution seat 40, and the number of the locking assembly 16 are the same. Each air inlet 42 is correspondingly positioned above an outer ring gas outlet 311, and each locking assembly 16 is correspondingly positioned above an air inlet 42. This structural arrangement allows the mixed gas at the outer ring gas outlet 311 to move upward and pass through the corresponding air inlet 42. Then, it is blocked by the portion of the locking assembly 16 located within the connecting cavity 18, causing it to be diverted. This allows it to quickly flow to both sides of the locking part in the circumferential direction. Simultaneously, the direction of the gas is changed due to the obstruction, which enhances the uniformity of the gas-air mixture, thereby improving combustion efficiency.

[0072] In some embodiments, such as Figure 10 As shown, the portion of the locking assembly 16 located within the communicating cavity 18 has guide surfaces 164 on both sides along the circumferential direction. The guide surfaces 164 are configured to guide the gas to flow towards both sides of the locking assembly 16 along the circumferential direction. This configuration not only promotes the diversion of the mixed gas but also avoids the generation of vortex dead zones at the top of the locking assembly 16, thereby reducing the kinetic energy loss of the mixed gas, improving the uniformity of gas distribution, and promoting complete combustion.

[0073] In this embodiment, both guide surfaces 164 are inclined planes, extending from bottom to top in a direction away from each other. The angle between the guide surfaces 164 and the horizontal direction is β, where 15°≤β≤60°. Specifically, the value of β can be 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, or 60°.

[0074] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, based on the concept of this utility model, there will be changes in the specific implementation methods and application scope. The content of this specification should not be construed as a limitation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An outer ring flame cap, characterized in that, It includes an upper ring cover (11), a middle ring cover (12) and a lower ring cover (13) stacked from top to bottom. The outer circumferential surface of the upper ring cover (11) and the inner circumferential surface of the middle ring cover (12) form a main flame ring seam (14), and the outer circumferential surface of the middle ring cover (12) and the inner circumferential surface of the lower ring cover (13) form a flame stabilizing ring seam (15). The outer ring flame cover includes a plurality of locking components (16), which are used to lock the upper ring cover (11), the middle ring cover (12) and the lower ring cover (13). The plurality of locking components (16) are arranged at intervals along the circumference of the outer ring flame cover, and the main flame ring seam (14) and the flame stabilizing ring seam (15) are respectively divided into at least two corresponding segments.

2. The outer ring flame cap as described in claim 1, characterized in that, The locking assembly (16) includes: The upper locking part (161) is connected to the outer circumferential surface of the upper ring cover (11) or the inner circumferential surface of the middle ring cover (12), and the upper locking part (161) separates the main fire ring seam (14); The central locking part (162) is connected to the outer circumferential surface of the central ring cover (12) or the inner circumferential surface of the lower ring cover (13), and the central locking part (162) separates the flame stabilizing ring seam (15).

3. The outer ring flame cap as described in claim 2, characterized in that, The upper end of the upper locking part (161) is connected to the outer circumferential surface of the upper ring cover (11), and the upper end of the middle locking part (162) is connected to the outer circumferential surface of the middle ring cover (12). The locking assembly (16) further includes a fastener (165) and a lower locking part (163) connected to the lower ring cover (13). The lower end of the middle locking part (162) is stacked on the lower locking part (163), and the lower end of the upper locking part (161) is stacked on the middle locking part (162). The lower locking part (163), the middle locking part (162), and the upper locking part (161) are connected by the fastener (165).

4. The outer ring flame cap as described in any one of claims 1-3, characterized in that, A connecting cavity (18) is formed between the lower end of the outer circumference of the upper ring cover (11) and the lower end of the inner circumference of the lower ring cover (13), and the main flame ring seam (14) and the flame stabilizing ring seam (15) are both connected to the connecting cavity (18). The locking assembly (16) located within the communicating cavity (18) has guide surfaces (164) on both sides of the circumferential direction, and the guide surfaces (164) are configured to guide gas to flow to both sides of the locking assembly (16) in the circumferential direction.

5. The outer ring flame cap as described in claim 4, characterized in that, Both of the guide surfaces (164) are inclined surfaces and extend in a direction away from each other in an upward direction; The angle between the guide surface (164) and the horizontal direction is β, where 15°≤β≤60°.

6. The outer ring flame cap as described in any one of claims 1-3, characterized in that, The height of the outlet of the flame stabilizing ring seam (15) is lower than the height of the outlet of the main fire ring seam (14).

7. A burner, characterized in that, The device includes a burner head (30), a gas distribution seat (40), and an outer ring flame cover as described in any one of claims 1-6. The gas distribution seat (40) covers the burner head (30), and the outer ring flame cover covers the gas distribution seat (40). An outer ring mixing channel (31) is provided inside the burner head (30), and a gas distribution channel (41) is provided on the gas distribution seat (40). The outer ring mixing channel (31) is connected to the gas distribution channel (41), and the main flame ring seam (14) and the flame stabilizing ring seam (15) are both connected to the gas distribution channel (41).

8. The burner as claimed in claim 7, characterized in that, The upper side of the burner head (30) is provided with a number of outer ring gas outlets (311) arranged in a circumferential direction. The gas distribution seat (40) is provided with a corresponding number of air inlets (42). Each air inlet (42) is provided above an outer ring gas outlet (311), and each locking component (16) is provided above an air inlet (42).

9. A gas stove, characterized in that, Includes at least one burner as described in claim 7 or 8.

10. The gas stove as described in claim 9, characterized in that, The gas stove also includes a pot rack (200), which is arranged around the outer periphery of the outer ring burner. The pot rack (200) includes a plurality of feet (210) for supporting the pot, and each foot (210) is arranged opposite to one of the locking components (16).

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