Outer ring burner cap, burner cap assembly and stove

Abstract

This utility model relates to the field of stove technology, specifically to an outer ring burner cap, a burner cap assembly, and a stove. The outer ring burner cap is equipped with a first mixing chamber, and its outer circumferential surface has multiple first flame outlet holes around its axis, all of which communicate with the first mixing chamber. Along the axial direction of the outer ring burner cap, the height of the inner edge of its upper surface is lower than the height of its outer edge. When applied to a burner cap assembly and a stove, this outer ring burner cap can concentrate the heat energy generated by the combustion flame of the central burner cap, forming a stable combustion zone and energy-concentrating zone. This helps maintain stable flame combustion, optimizes combustion, and prevents instability or extinguishing of the central flame, effectively improving combustion intensity and temperature, thereby increasing combustion efficiency and significantly enhancing the user's cooking experience.

Description

Technical Field

[0001] This utility model relates to the field of stove technology, specifically to an outer ring burner cap, a burner cap assembly, and a stove. Background Technology

[0002] As an essential kitchen appliance for daily life, high combustion thermal efficiency has become one of the development directions for gas stoves. Currently, the burners of gas stoves on the market generally have a combination structure of a central burner cap and an outer ring burner cap, with the central burner cap located in the middle and the outer ring burner cap located around the central burner cap. However, during use, this structure results in an unstable central flame at the central burner cap, leading to low combustion thermal efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide an outer ring burner cap, a burner cap assembly, and a stove, which can concentrate the heat energy gas generated by the combustion flame of the central burner cap, forming a stable combustion zone and energy-concentrating zone. This helps to maintain stable combustion of the flame, optimize combustion, and avoid problems such as instability or extinguishing of the central flame. It effectively improves the intensity and temperature of combustion, thereby improving combustion efficiency and greatly enhancing the user's cooking experience.

[0004] The embodiments of this utility model can be implemented as follows:

[0005] In the first aspect, this utility model provides an outer ring flame cap, which is equipped with a first mixing chamber. The outer circumferential surface of the outer ring flame cap is provided with a plurality of first flame outlet holes around its axis, and the plurality of first flame outlet holes are all connected to the first mixing chamber.

[0006] Along the axial direction of the outer ring flame cap, the height of the inner edge of the upper end face of the outer ring flame cap is lower than the height of its outer edge.

[0007] In an optional embodiment, the upper surface of the outer ring flame cap is a sloped surface, an arc-shaped surface, or a stepped surface.

[0008] In an optional embodiment, the height difference between the inner edge and the outer edge of the upper surface of the outer ring flame cap is 11-17 mm.

[0009] In an optional embodiment, the various positions on the outer peripheral surface of the outer ring flame cap are located on the same circumference, and the first flame outlet is inclined toward the upper end surface of the outer ring flame cap.

[0010] Secondly, this utility model provides a flame cap assembly, which includes a central flame cap and the aforementioned outer ring flame cap.

[0011] The outer ring flame cap is located around the center flame cap;

[0012] The center burner cap is equipped with a second mixing chamber, and multiple second flame outlet holes are opened around its axis on the outer circumference of the center burner cap. All of the multiple second flame outlet holes are connected to the second mixing chamber.

[0013] The upper surface of the central flame cap is lower than the outer edge of the upper surface of the outer ring flame cap, but higher than the inner edge of the upper surface of the outer ring flame cap.

[0014] In an optional embodiment, along the axial direction of the outer ring flame cap, the lower edge of the second flame outlet is higher than the inner edge of the upper end face of the outer ring flame cap, and the lower edge of the second flame outlet is lower than the outer edge of the upper end face of the outer ring flame cap.

[0015] In an optional embodiment, the height difference between the lower edge of the second flame outlet and the inner edge of the upper surface of the outer ring flame cap is 3-6 mm.

[0016] The height difference between the lower edge of the second flame outlet and the outer edge of the upper surface of the outer ring flame cap is 8-11mm.

[0017] Thirdly, this utility model provides a stove, which includes a stove body and a burner connected to the stove body;

[0018] The burner includes the burner head and the aforementioned burner cap assembly;

[0019] Both the central burner cap and the outer ring burner cap are connected to the burner head, with the outer ring burner cap located around the central burner cap.

[0020] In an optional embodiment, the stove also includes a pot rack, which is connected to the stove body or the burner and is located around the outer ring of the burner cap. The upper surface of the pot rack is provided with a plurality of support members for supporting the pot.

[0021] Along the axial direction of the outer ring fire cap, the height of the inner edge of the upper surface of the pot frame is lower than the height of its outer edge, and the outer edge of the upper surface of the outer ring fire cap is lower than the outer edge of the upper surface of the pot frame.

[0022] In an optional embodiment, the upper surface of the pot rack is a sloped surface, an arc-shaped surface, or a stepped surface, and the height difference between the outer edge of the upper surface of the outer ring fire cap and the upper surface of the pot rack is 5-8mm.

[0023] The beneficial effects of the outer ring burner cap, burner cap assembly, and stove provided in this embodiment of the utility model include:

[0024] The outer ring burner cap is equipped with a first mixing chamber. Multiple first flame outlet holes are formed on the outer circumference of the burner cap around its axis, and all of these holes communicate with the first mixing chamber. Specifically, along the axial direction of the outer ring burner cap, the height of the inner edge of its upper surface is lower than the height of its outer edge. This outer ring burner cap, when used in burner cap assemblies and cooktops, can concentrate the heat energy generated by the combustion flame of the central burner cap, forming a stable combustion and energy-concentrating zone. This helps maintain stable flame combustion, optimizes combustion, and prevents instability or extinguishing of the central flame, effectively increasing combustion intensity and temperature, thereby improving combustion efficiency and significantly enhancing the user's cooking experience. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a cross-sectional view of the outer ring flame cap provided in this embodiment;

[0027] Figure 2 This is a schematic diagram of the outer ring flame cap provided in this embodiment;

[0028] Figure 3 This is a schematic diagram of the stove provided in this embodiment;

[0029] Figure 4 This is a cross-sectional view of the stove provided in this embodiment;

[0030] Figure 5 This is a partial sectional view of the stove provided in this embodiment.

[0031] Icons: 100 - Outer ring burner cap; 111 - First mixing chamber; 112 - First flame outlet; 200 - Burner cap assembly; 210 - Center burner cap; 211 - Second mixing chamber; 212 - Second flame outlet; 400 - Stove; 410 - Stove body; 300 - Burner; 310 - Stove head; 420 - Pot rack; 430 - Support component. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model.

[0036] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0037] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0038] Please refer to Figure 1 and Figure 2 This embodiment provides an outer ring flame cap 100, which is provided with a first mixing chamber 111. The outer peripheral surface of the outer ring flame cap 100 is provided with a plurality of first flame outlet holes 112 around its axis, and the plurality of first flame outlet holes 112 are all connected to the first mixing chamber 111.

[0039] Along the axial direction of the outer ring flame cap 100, the height of the inner edge of the upper end face of the outer ring flame cap 100 is lower than the height of its outer edge.

[0040] Please refer to Figure 1 and Figure 2 and combined Figure 3 and Figure 4 The working principle of the outer ring flame cap 100 is as follows:

[0041] The outer ring flame cap 100 employs a design where the inner and outer edges of its upper surface are at different heights. Specifically, along the axial direction of the outer ring flame cap 100, the height of the inner edge of its upper surface is lower than the height of its outer edge. This design allows the inner edge of the upper surface of the outer ring flame cap 100 to be adjusted for height difference during use (e.g., the height difference between the inner and outer edges of the upper surface of the outer ring flame cap 100). Figure 1 As shown in the mark D1), this can concentrate the heat energy gas generated by the combustion flame of the central burner 210, forming a stable combustion zone and energy concentration zone. This helps to maintain stable combustion of the flame, optimize combustion, and avoid problems such as instability or extinguishing of the central flame. It effectively improves the intensity and temperature of combustion, thereby improving combustion efficiency and greatly enhancing the user's cooking experience.

[0042] When configuring the upper surface of the outer ring flame cap 100, since the heights of its inner and outer edges are not consistent, and the height of the inner edge of the upper surface of the outer ring flame cap 100 is lower than the height of its outer edge, in order to create a height difference between the inner and outer edges of the outer ring flame cap 100, the upper surface of the outer ring flame cap 100 can be shaped as a sloping surface, an arc surface, or a stepped surface, provided that the height of the inner edge of the upper surface of the outer ring flame cap 100 is lower than the height of its outer edge. Furthermore, when configuring the upper surface of the outer ring flame cap 100 as an arc surface, it can be a curved surface, a wavy surface, or a concave-convex surface, and its specific shape can be set according to actual needs.

[0043] Based on the above structure, when configuring the outer ring flame cap 100, since the height of the inner edge of the upper end face of the outer ring flame cap 100 is lower than the height of its outer edge, the height difference between the inner edge and the outer edge of the upper end face of the outer ring flame cap 100 can be 11-17mm. This arrangement allows the height difference between the inner edge and the outer edge of the upper end face of the outer ring flame cap 100 to be 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, or 17mm. The purpose of this design is to meet the usage requirements of various types of center burner caps 210 according to actual needs, thus broadening the applicability of the outer ring burner cap 100. Moreover, this design enhances the ability of the outer ring burner cap 100 to concentrate the heat energy generated by the combustion flame of the center burner cap 210 during use, thereby helping to form a stable combustion zone and energy concentration zone. This helps maintain stable flame combustion, optimizes combustion, and prevents problems such as instability or extinguishing of the center flame, effectively improving the intensity and temperature of combustion, thereby increasing combustion efficiency and greatly enhancing the user's cooking experience.

[0044] Based on the above structure, when configuring the first flame outlet 112, the method of setting multiple first flame outlets 112 around the axis of the outer ring flame cap 100 on its outer circumferential surface is adopted. In this embodiment, the positions of the outer circumferential surface of the outer ring flame cap 100 are located on the same circumference, and the first flame outlets 112 are inclined towards the upper end face of the outer ring flame cap 100. Through this configuration, the first flame outlets 112 of the outer ring flame cap 100 all emit gas towards the upper end face. In other embodiments of this embodiment, when configuring the outer ring flame cap 100, its diameter can be gradually increased from bottom to top along its axial direction.

[0045] Based on the aforementioned outer ring flame cap 100, please refer to Figures 1-5 This embodiment also provides a flame cap assembly 200, which includes a central flame cap 210 and the aforementioned outer ring flame cap 100; the outer ring flame cap 100 is disposed around the central flame cap 210.

[0046] The central flame cap 210 is equipped with a second mixing chamber 211. The outer peripheral surface of the central flame cap 210 is provided with a plurality of second flame outlet holes 212 around its axis. The plurality of second flame outlet holes 212 are all connected to the second mixing chamber 211.

[0047] The upper surface of the central flame cap 210 is lower than the outer edge of the upper surface of the outer ring flame cap 100, and higher than the inner edge of the upper surface of the outer ring flame cap 100.

[0048] The burner assembly 200 uses the aforementioned outer ring burner 100. Because the upper surface of the central burner 210 is lower than the outer edge of the upper surface of the outer ring burner 100, during use, the height difference between the inner and outer edges of the upper surface of the outer ring burner 100, and the height difference between the upper surface of the central burner 210 and the upper surface of the outer ring burner 100, allow the outer ring burner 100 to concentrate the heat energy generated by the combustion flame of the central burner 210, forming a stable combustion zone and energy-concentrating zone. This helps maintain stable combustion, optimizes combustion, and prevents instability or extinguishing of the central flame, effectively increasing combustion intensity and temperature, thereby improving combustion efficiency and significantly enhancing the user's cooking experience.

[0049] When configuring the second flame outlet 212 of the aforementioned center flame cap 210, in order to enable it to form a stable combustion zone and energy-concentrating zone through the outer ring flame cap 100 during the combustion process, which helps to maintain stable flame combustion, optimize combustion, avoid the problem of unstable or extinguished central flame, and effectively improve the intensity and temperature of combustion, thereby improving combustion efficiency, the lower edge of the second flame outlet 212 can be higher than the inner edge of the upper end face of the outer ring flame cap 100 along the axial direction of the outer ring flame cap 100, and the lower edge of the second flame outlet 212 can be lower than the outer edge of the upper end face of the outer ring flame cap 100.

[0050] Specifically, the height difference between the lower edge of the second flame outlet 212 and the inner edge of the upper surface of the outer ring flame cap 100 can be adjusted (e.g., Figure 5 (As indicated by the mark H1) is 3-6 mm, for example: 3 mm, 4 mm, 5 mm or 6 mm; the lower edge of the second flame outlet 212 and the outer edge of the upper end face of the outer ring flame cap 100 (as shown in the image) are 3-6 mm, for example: 3 mm, 4 mm, 5 mm or 6 mm; Figure 5 The height difference (as indicated by mark H2) is 8-11 mm, such as 8 mm, 9 mm, 10 mm, or 11 mm. It should be noted that the height difference setting can be selected according to the actual situation.

[0051] Based on the aforementioned flame cap assembly 200, please refer to... Figures 1-5 This embodiment also provides a stove 400, which includes a stove body 410 and a burner 300 connected to the stove body 410;

[0052] The burner 300 includes a burner head 310 and the aforementioned burner cap assembly 200; the central burner cap 210 and the outer ring burner cap 100 are both connected to the burner head 310, and the outer ring burner cap 100 is located around the central burner cap 210.

[0053] The stove 400, by adopting the aforementioned burner cap assembly 200, possesses all the advantages of the aforementioned burner cap assembly 200.

[0054] Based on the above structure, the stove 400 also includes a pot rack 420, which is connected to the stove body 410 or the burner 300. The pot rack 420 is located around the outer ring burner cap 100, and the upper surface of the pot rack 420 is provided with a plurality of support members 430 for supporting the pot. That is, by setting the pot rack 420, it can play a supporting role, which aims to improve the stability of the pot while supporting it, and at the same time, it can make a certain gap between the pot and the burner cap assembly 200 below, so as to improve the heating efficiency.

[0055] Furthermore, along the axial direction of the outer ring flame cap 100, the height of the inner edge of the upper surface of the pot rack 420 is lower than the height of its outer edge, and the outer edge of the upper surface of the outer ring flame cap 100 is lower than the outer edge of the upper surface of the pot rack 420. That is, through this arrangement, the height difference of the upper surface of the pot rack 420 (e.g., ...) can be used to... Figure 4 As shown in the mark D2), during use, the height difference between the inner and outer edges of the upper surface of the pot rack 420 can concentrate the heat energy generated by the combustion flames of the outer ring burner 100 and the central burner 210, forming a stable combustion zone and energy-concentrating zone. This helps maintain stable combustion, optimizes combustion, and avoids problems such as instability or extinguishing of the central flame, effectively improving the intensity and temperature of combustion, thereby increasing combustion efficiency and greatly enhancing the user's cooking experience.

[0056] It should be noted that the design of the pot rack 420, when the outer ring burner 100 and the central burner 210 are working simultaneously, can concentrate the heat energy generated by the combustion flames of the outer ring burner 100 and the central burner 210, forming a stable combustion zone and energy-concentrating zone. This helps maintain stable combustion and optimizes combustion. When the outer ring burner 100 is not working and the central burner 210 is working, the height difference between the inner and outer edges of the upper surface of the outer ring burner 100 can concentrate the heat energy generated by the combustion flame of the central burner 210, forming a stable combustion zone and energy-concentrating zone. This helps maintain stable combustion, optimizes combustion, and prevents the central flame from becoming unstable or extinguished. This effectively increases the intensity and temperature of combustion, thereby improving combustion efficiency and significantly enhancing the user's cooking experience.

[0057] When configuring the upper surface of the pot rack 420, it can be set as a sloped surface, an arc-shaped surface, or a stepped surface. When the upper surface is an arc-shaped surface, it can be a curved surface, a wavy surface, or a surface with concave and convex shapes, etc., and its specific shape can be set according to actual needs. Furthermore, to ensure that the height of the upper surface of the pot rack 420 is compatible with the height of the outer ring flame cap 100, the height difference between the outer edge of the upper surface of the outer ring flame cap 100 and the upper surface of the pot rack 420 (e.g., Figure 5 (As indicated by the mark H3) is 5-8mm, for example: 5 mm, 6 mm, 7 mm or 8 mm.

[0058] In summary, please refer to Figures 1-5 When the stove 400 is configured, its central burner 210, outer ring burner 100 and pot rack 420 are all arranged in a circular shape and are coaxially installed. The outer ring burner 100 is located outside the central burner 210, and the pot rack 420 is located outside the outer ring burner 100.

[0059] Furthermore, when configuring the center flame cap 210, the outer ring flame cap 100, and the pot rack 420, the outer ring flame cap 100 and the pot rack 420 are both designed with a height difference between the inner and outer edges of their upper surfaces. Specifically, the outer edge of the upper surface of the outer ring flame cap 100 is higher than its inner edge, and the outer edge of the upper surface of the pot rack 420 is higher than its inner edge.

[0060] Furthermore, the lower edge of the second flame outlet 212 is higher than the inner edge of the upper end face of the outer ring flame cover 100, and the lower edge of the second flame outlet 212 is lower than the outer edge of the upper end face of the outer ring flame cover 100; the height of the inner edge of the upper end face of the pot rack 420 is lower than the height of its outer edge, and the outer edge of the upper end face of the outer ring flame cover 100 is lower than the outer edge of the upper end face of the pot rack 420.

[0061] Furthermore, through the aforementioned structural design, the outer ring burner cap 100 can form a disc-shaped energy-concentrating structure around the central burner cap 210. That is, the outer ring burner cap 100 can concentrate the heat energy mass generated by the combustion at the central burner cap 210. At the same time, it avoids the problem of insufficient concentration of the combustion heat energy mass and unstable or extinguished flames when the user only uses the central flame during cooking, due to the distance from the disc-shaped pot rack 420. Moreover, the shape and structural design of the outer ring burner cap 100 makes the combustion flame of the central burner cap 210 form a stable combustion zone and energy-concentrating zone, which helps to maintain stable combustion, optimize combustion, and effectively improve the intensity and temperature of combustion, thereby improving combustion efficiency and greatly enhancing the user's cooking experience.

[0062] It should also be noted that the upper surface of the pot rack 420 is provided with multiple support members 430 for supporting the cooking pot. The upper end of the support member 430 is higher than the outer edge of the upper surface of the pot rack 420. In this way, the upper surface of the pot rack 420 and the bottom of the cooking pot are connected to form an exhaust port for combustion flue gas, ensuring the reasonable emission of combustion flue gas and achieving a balanced combustion effect.

[0063] Furthermore, based on the above structure, it can be seen that in this embodiment, the lower edge of the second flame outlet 212 is higher than the inner edge of the upper end face of the outer ring flame cap 100, and the lower edge of the second flame outlet 212 is lower than the outer edge of the upper end face of the outer ring flame cap 100; the height of the inner edge of the upper end face of the pot rack 420 is lower than the height of its outer edge, and the outer edge of the upper end face of the outer ring flame cap 100 is lower than the outer edge of the upper end face of the pot rack 420. This arrangement is beneficial to improving the combustion energy concentration and combustion stability.

[0064] Through the above technical solutions, when the outer ring flame cap 100 and the central flame cap 210 work simultaneously, both the outer ring flame and the central flame have corresponding disc-shaped structural devices. The outer ring flame cap 100 is an energy-concentrating structure corresponding to the central flame cap 210, while the pot frame 420 is an energy-concentrating structure corresponding to the outer ring flame cap 100. That is, both the outer ring flame cap 100 and the central flame cap 210 have corresponding energy-concentrating discs, which enables the combustion flame to form a stable combustion zone and an energy-concentrating zone. This greatly enhances the effect of concentrating the combustion heat energy gas mass generated by the overall combustion, further concentrating the combustion heat energy gas mass at the bottom of the pot, reducing the heat loss from radiation to the outside of the combustion heat energy, and suppressing the excessively fast flow rate of high-temperature flue gas, thereby reducing convective heat loss. The heat energy utilization rate is further improved, greatly enhancing the combustion effect and thus improving the combustion thermal efficiency.

[0065] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. An outer ring flame cap, characterized in that: The outer ring flame cap is equipped with a first mixing chamber, and the outer peripheral surface of the outer ring flame cap is provided with a plurality of first flame outlet holes around its axis, and the plurality of first flame outlet holes are all connected to the first mixing chamber. Specifically, along the axial direction of the outer ring flame cap, the height of the inner edge of the upper end face of the outer ring flame cap is lower than the height of its outer edge.

2. The outer ring flame cap according to claim 1, characterized in that: The upper surface of the outer ring fire cap is a sloping surface, an arc-shaped surface, or a stepped surface.

3. The outer ring flame cap according to claim 1, characterized in that: The height difference between the inner edge and the outer edge of the upper surface of the outer ring fire cap is 11-17mm.

4. The outer ring flame cap according to claim 1, characterized in that: The various positions on the outer peripheral surface of the outer ring flame cap are located on the same circumference, and the first flame outlet is inclined toward the upper end face of the outer ring flame cap.

5. A flame cap assembly, characterized in that: The flame cap assembly includes a central flame cap and an outer ring flame cap as described in any one of claims 1-4; The outer ring flame cap is disposed around the center flame cap; The central flame cap is equipped with a second mixing chamber, and the outer peripheral surface of the central flame cap is provided with a plurality of second flame outlet holes around its axis, and the plurality of second flame outlet holes are all connected to the second mixing chamber. The upper surface of the central flame cap is lower than the outer edge of the upper surface of the outer ring flame cap, but higher than the inner edge of the upper surface of the outer ring flame cap.

6. The flame cap assembly according to claim 5, characterized in that: Along the axial direction of the outer ring flame cap, the lower edge of the second flame outlet is higher than the inner edge of the upper end face of the outer ring flame cap, and the lower edge of the second flame outlet is lower than the outer edge of the upper end face of the outer ring flame cap.

7. The flame cap assembly according to claim 6, characterized in that: The height difference between the lower edge of the second flame outlet and the inner edge of the upper surface of the outer ring flame cap is 3-6mm. The height difference between the lower edge of the second flame outlet and the outer edge of the upper surface of the outer ring flame cap is 8-11 mm.

8. A stove, characterized in that: The stove includes a stove body and a burner connected to the stove body; The burner includes a burner head and a burner cap assembly as described in any one of claims 5-7; Both the central burner cap and the outer ring burner cap are connected to the furnace head, and the outer ring burner cap is located around the central burner cap.

9. The stove according to claim 8, characterized in that: The stove also includes a pot rack, which is connected to the main body of the stove or the burner, and the pot rack is located around the outer ring of the burner cap. The upper surface of the pot rack is provided with a plurality of support members for supporting the pot. Specifically, along the axial direction of the outer ring flame cap, the height of the inner edge of the upper end face of the pot frame is lower than the height of its outer edge, and the outer edge of the upper end face of the outer ring flame cap is lower than the outer edge of the upper end face of the pot frame.

10. The stove according to claim 9, characterized in that: The upper surface of the pot rack is a sloping surface, an arc surface, or a stepped surface, and the height difference between the outer edge of the upper surface of the outer ring fire cap and the upper surface of the pot rack is 5-8mm.

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