Fire cover, combustor and stove

Abstract

The utility model provides a fire cover, a burner and a stove. The fire cover comprises an alloy body, a first material layer and a second material layer. A gas mixing cavity is defined by the alloy body, and the alloy body is provided with a first outer surface located outside the gas mixing cavity. The first material layer is formed on the first outer surface, and the first material layer is provided with a second outer surface far away from the first outer surface. The second material layer is formed on the second outer surface, and at least part of the first material layer is exposed out of the second material layer. Wherein the first material layer is made of a corrosion-resistant material, and the second material layer is made of a high-temperature-resistant material. Thus, through the first material layer and the second material layer which are sequentially arranged outside the alloy body, the manufacturing cost of the fire cover can be reduced, and the corrosion resistance, the pollution resistance and the attractiveness of the fire cover can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of stoves, specifically to a burner cap, a burner, and a stove. Background Technology

[0002] Gas stoves have become an indispensable household appliance in people's daily lives.

[0003] Currently, burner caps in gas stoves are generally made of copper or stainless steel. Copper burner caps have good thermal conductivity, which allows them to transfer the heat generated by the flame to the bottom of the pot, improving the combustion efficiency of the gas stove. Stainless steel burner caps, on the other hand, have lower manufacturing costs, thus meeting the purchasing needs of more people.

[0004] However, copper flame caps are prone to oxidation when exposed to high temperatures, affecting their appearance. Stainless steel flame caps are also prone to developing surface rust after a period of use, significantly impacting their rust resistance and aesthetics. Utility Model Content

[0005] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a flame cover is provided, the technical solution of which is as follows.

[0006] The flame cap includes an alloy body, a first material layer, and a second material layer. The alloy body encloses a gas mixing chamber and has a first outer surface located outside the gas mixing chamber. The first material layer is formed on the first outer surface and has a second outer surface located away from the first outer surface. The second material layer is formed on the second outer surface, and at least a portion of the first material layer is exposed outside the second material layer. The first material layer is made of a corrosion-resistant material, and the second material layer is made of a high-temperature resistant material.

[0007] The flame cap of this utility model has an alloy body made of alloy material, which not only has low manufacturing cost, but also has high strength and toughness. The first material layer formed on the first outer surface of the alloy body can improve the corrosion resistance of the alloy body, while the second material layer can be formed on the second outer surface of the first material layer to improve the stain resistance of the flame cap. By sequentially setting the first material layer and the second material layer on the outside of the alloy body, the corrosion resistance, stain resistance and aesthetics of the flame cap can be effectively improved.

[0008] For example, the first material layer is constructed of copper. Thus, the first material layer made of copper not only has excellent corrosion resistance and high temperature resistance, but also greatly enhances the texture of the flame cap.

[0009] For example, the second material layer is constructed as a paint layer. In this way, the second material layer made of paint layer can not only protect the first material layer, but also effectively improve the stain resistance and aesthetics of the flame cap.

[0010] For example, the alloy body has an annular top wall, an inner side wall, and an outer side wall. The inner side wall is connected to the inner ring of the annular top wall, and the outer side wall is connected to the outer ring of the annular top wall. A first material layer is formed on the outer surface of the annular top wall, the outer surface of the inner side wall, and the outer surface of the outer side wall. Thus, the first material layer protects the parts of the alloy body that are in direct contact with the external environment from corrosion. This improves the corrosion resistance of the flame cap while reducing the amount of the first material layer used, thus improving the performance and reducing the manufacturing difficulty and cost of the flame cap.

[0011] For example, the annular top wall includes a protrusion, the height of which does not exceed the upper surface of the protrusion. The first material layer has a first portion and a second portion, the first portion corresponding to the upper surface of the protrusion, and the portion of the first material layer excluding the first portion forming the second portion. The second material layer is formed on the second portion. In this way, the upper surface of the protrusion can be provided with only the first material layer. Since the first material layer is made of precious metals such as copper alloy or titanium alloy, exposing the first material layer to the external environment not only ensures the corrosion resistance of the flame cap but also effectively improves the texture of the flame cap.

[0012] For example, the annular top wall is inclined, and its height decreases from one end near the outer wall to one end near the inner wall. A protrusion is formed at the end of the annular top wall near the outer wall. Alternatively, the height of the annular top wall increases from one end near the outer wall to one end near the inner wall, and a protrusion is formed at the end of the annular top wall near the inner wall. Thus, the protrusion can be formed at a high position in the vertical direction of the flame cap. Since the upper surface of the protrusion is only provided with a first material layer, and this first material layer is made of a precious metal such as a copper alloy or titanium alloy, by placing the protrusion at a high position in the flame cap, the texture of the flame cap and the user experience can be effectively improved.

[0013] For example, the upper surface of the annular top wall is recessed inward or protruded outward to form an arcuate surface, with the protrusion formed on the annular top wall. Thus, when the upper surface of the annular top wall is constructed as an arcuate surface, the protrusion can be formed at a high position in the vertical direction of the arcuate surface. Since the upper surface of the protrusion is only provided with a first material layer, and the first material layer is made of a precious metal such as a copper alloy or a titanium alloy, by setting the protrusion at a high position on the arcuate surface, the texture of the flame cover and the user experience can be effectively improved.

[0014] For example, the thickness of the first part is greater than the thickness of the second part. In this way, when machining the upper surface of the protrusion, the situation where the alloy body is exposed to the external environment due to the thinness of the first part can be avoided. This simplifies the manufacturing difficulty and processing steps of the flame cap, while also effectively improving the reliability and practicality of the flame cap.

[0015] For example, the protrusion has a width W1, which ranges from 1 mm to 10 mm; and / or, the protrusion has a height H1, which ranges from 0.2 mm to 2 mm. Thus, a protrusion having the aforementioned width and / or height ranges ensures sufficient operating space during machining of its upper surface, preventing damage to the annular top wall, inner side wall, or outer side wall of the alloy body due to insufficient width or height during machining, effectively improving the yield rate of the flame cap manufacturing.

[0016] For example, the upper surface of the protrusion is constructed as a plane, or the upper surface of the protrusion is recessed inward or protruded outward to construct an arc-shaped surface. In this way, the upper surface of the protrusion can be directly machined into a plane or an arc-shaped surface according to different machining methods, without additional machining steps, effectively simplifying the machining steps and processes of the flame cover.

[0017] For example, the alloy body is constructed of stainless steel. Thus, the stainless steel body has a relatively lower manufacturing cost compared to copper or titanium alloys. Using an alloy body made of stainless steel can effectively reduce the manufacturing cost of the flame cap, thereby meeting user needs and reducing their purchasing burden.

[0018] According to another aspect of this utility model, a burner is also provided, including a flame distribution seat, an injector tube, and a flame cap as described above, the flame cap being disposed on the flame distribution seat. Since the flame cap as described above has the aforementioned beneficial effects, the burner including the flame cap as described above also has the aforementioned beneficial effects, which will not be elaborated further here.

[0019] According to another aspect of this utility model, a stove is also provided, including a bottom shell, a panel, and a burner as described above. The bottom shell forms an installation cavity with an opening, the panel covers the opening, and the panel has a through hole through which the burner passes, with part of the burner located inside the installation cavity and part of the burner located outside the installation cavity. Since the burner described above has the aforementioned beneficial effects, the stove including the burner described above also has the aforementioned beneficial effects, which will not be elaborated further here.

[0020] The advantages and features of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the drawings,

[0022] Figure 1 A perspective view of the alloy body of a flame cap according to an exemplary embodiment of the present invention is shown;

[0023] Figure 2 A cross-sectional view of a flame cap according to an exemplary embodiment of the present invention is shown. Figure 1 ;

[0024] Figure 3 A cross-sectional view of a flame cap according to an exemplary embodiment of the present invention is shown. Figure 2 ;

[0025] Figure 4 A perspective view of a burner according to an exemplary embodiment of the present invention is shown;

[0026] Figure 5 A perspective view of a stove according to an exemplary embodiment of the present invention is shown.

[0027] The components indicated by the reference numerals in the figures are as follows:

[0028] 1. Burner cap; 11. Alloy body; 111. Mixing chamber; 112. Annular top wall; 113. Inner side wall; 114. Outer side wall; 115. Protrusion; 116. Flame outlet; 121. First material layer; 1211. First part; 1212. Second part; 122. Second material layer; 2. Burner; 21. Flame distribution base; 22. Injector tube; 3. Stove; 31. Bottom shell; 32. Panel; 321. Through hole. Detailed Implementation

[0029] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will understand that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0030] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0031] One embodiment of this utility model provides a flame cover 1, which reduces manufacturing costs while improving the flame cover's corrosion resistance, stain resistance, and aesthetics. The following will provide a detailed description of a flame cover 1 according to an embodiment of this utility model, with reference to the accompanying drawings.

[0032] like Figures 1 to 3 As shown, the flame cap 1 includes an alloy body 11, a first material layer 121, and a second material layer 122. The alloy body 11 encloses a gas mixing chamber 111 and has a first outer surface located outside the gas mixing chamber 111. The first material layer 121 is formed on the first outer surface and has a second outer surface away from the first outer surface. The second material layer 122 is formed on the second outer surface, and at least a portion of the first material layer 121 is exposed in the second material layer 122. The first material layer 121 is made of a corrosion-resistant material, and the second material layer 122 is made of a high-temperature resistant material.

[0033] Specifically, such as Figure 1 As shown, the alloy body 11 may have an annular mixing chamber 111, and multiple flame outlets 116 may be spaced along its circumference on the alloy body 11. The multiple flame outlets 116 may be connected to the mixing chamber 111 respectively. The gas can fill the mixing chamber 111 and be ignited and then sprayed outward through the multiple flame outlets 116.

[0034] Specifically, the alloy body 11 can be made of materials with low manufacturing costs and relatively stable performance at high temperatures. For example, stainless steel or cast iron, etc., this application does not make specific limitations in this regard.

[0035] Specifically, the first material layer 121 can be made of a rust-resistant material such as copper alloy or titanium alloy. The copper alloy or titanium alloy can be melted and sprayed onto the alloy body 11 using a high-pressure spraying method to form the first material layer 121. Of course, other methods can be used to form the first material layer 121 on the alloy body 11, and this application does not specifically limit this method. The aforementioned first material layer 121 can cover the first outer surface formed on the alloy body 11, thereby forming a protective structure on the outer side of the alloy body 11.

[0036] Specifically, the second material layer 122 can be made of a material with good high temperature resistance and stain resistance. The second material layer 122 can also be sprayed onto the second outer surface of the first material layer 121 by high-pressure spraying. This application does not specifically limit the connection method between the second material layer 122 and the first material layer 121.

[0037] The flame cap 1 of this utility model has an alloy body 11 made of alloy material, which not only has low manufacturing cost, but also has high strength and toughness. The first material layer 121 formed on the first outer surface of the alloy body 11 can improve the corrosion resistance of the alloy body 11, while the second material layer 122 can be formed on the second outer surface of the first material layer 121 to improve the stain resistance of the flame cap 1. By sequentially setting the first material layer 121 and the second material layer 122 on the outside of the alloy body 11, the corrosion resistance, stain resistance and aesthetics of the flame cap 1 can be effectively improved.

[0038] In some embodiments, the first material layer 121 is constructed as a copper layer. Thus, the first material layer 121 made of copper not only has excellent corrosion resistance and high temperature resistance, but also greatly enhances the texture of the flame cap 1.

[0039] In some embodiments, the second material layer 122 is constructed as a paint layer. Thus, the second material layer 122, made of paint, not only protects the first material layer 121, but also effectively improves the stain resistance and aesthetics of the flame cover 1.

[0040] Specifically, the second material layer 122 can be made of materials such as ceramic paint or silicone high-temperature resistant paint. Ceramic paint has excellent heat resistance and insulation properties, which can reflect the heat generated by the flame to the cookware, thereby improving the combustion efficiency of the burner cap 1. Furthermore, the second material layer 122 made of ceramic paint is hard and has excellent wear resistance and stain resistance. On the other hand, silicone high-temperature resistant paint not only has high temperature resistance and corrosion resistance, but also has strong adhesion at high temperatures, so as to adhere tightly to the second outer surface of the first material layer 121.

[0041] In some embodiments, such as Figures 1 to 3 As shown, the alloy body 11 has an annular top wall 112, an inner side wall 113, and an outer side wall 114. The inner side wall 113 is connected to the inner ring of the annular top wall 112, and the outer side wall 114 is connected to the outer ring of the annular top wall 112. A first material layer 121 is formed on the outer surface of the annular top wall 112, the outer surface of the inner side wall 113, and the outer surface of the outer side wall 114. In this way, the first material layer 121 can protect the parts of the alloy body 11 that are in direct contact with the external environment from corrosion. While improving the corrosion resistance of the flame cap 1, it also reduces the amount of the first material layer 121 used, improves the performance, and thus reduces the manufacturing difficulty and cost of the flame cap 1.

[0042] by Figure 2For example, the inner wall 113 and outer wall 114 of the alloy body 11 can be connected to the inner and outer rings of the annular top wall 112, respectively. It can be understood that the annular top wall 112, inner wall 113 and outer wall 114 of the alloy body 11 are in direct contact with the external environment. As a result, the above-mentioned parts are more prone to surface rust than other parts of the alloy body 11. Therefore, a first material layer 121 is formed on the surface of the above-mentioned parts to improve the overall corrosion resistance of the alloy body 11.

[0043] In some embodiments, such as Figure 2 and Figure 3 As shown, the annular top wall includes a protrusion 115, and the height of the annular top wall 112 does not exceed the upper surface of the protrusion 115. The first material layer 121 has a first portion 1211 and a second portion 1212. The first portion 1211 corresponds to the upper surface of the protrusion 115, and the portion of the first material layer 121 other than the first portion 1211 forms the second portion 1212. The second material layer 122 is formed on the second portion 1212. In this way, the upper surface of the protrusion 115 can be provided only with the first material layer 121. Since the first material layer 121 is made of precious metals such as copper alloy or titanium alloy, exposing the first material layer 121 to the external environment can not only ensure the corrosion resistance of the flame cap 1, but also effectively improve the texture of the flame cap 1.

[0044] Specifically, the annular top wall 112 can protrude vertically upward to form a protrusion 115. A first material layer 121 can be formed on the upper surface of the protrusion 115, while the other parts of the alloy body 11, excluding the upper surface of the protrusion 115, can sequentially have the first material layer 121 and the second material layer 122 formed on them. In other words, only the first material layer 121 can be provided on the upper surface of the protrusion 115, and the first material layer 121 can be exposed to the external environment.

[0045] In some embodiments, such as Figure 2 and Figure 3 As shown, the annular top wall 112 is inclined, and its height decreases from the end near the outer wall 114 to the end near the inner wall 113. A protrusion 115 is formed at the end of the annular top wall 112 near the outer wall 114. Alternatively, the height of the annular top wall 112 increases from the end near the outer wall 114 to the end near the inner wall 113, and the protrusion 115 is formed at the end of the annular top wall 112 near the inner wall 113. Thus, the protrusion 115 can be formed at a high position in the vertical direction of the flame cap 1. Since the upper surface of the protrusion 115 is only provided with a first material layer 121, and the first material layer 121 is made of precious metals such as copper alloy or titanium alloy, by placing the protrusion 115 at a high position of the flame cap 1, the texture of the flame cap 1 and the user experience can be effectively improved.

[0046] In some embodiments, the upper surface of the annular top wall 112 is recessed inward or protruded outward to form an arcuate surface, and a protrusion 115 is formed on the annular top wall 112. Thus, when the upper surface of the annular top wall 112 is constructed as an arcuate surface, the protrusion 115 can be formed at a high position in the vertical direction of the arcuate surface. Since the upper surface of the protrusion 115 is only provided with the first material layer 121, and the first material layer 121 is made of precious metals such as copper alloy or titanium alloy, by setting the protrusion 115 at a high position of the arcuate surface, the texture of the flame cover 1 and the user experience can be effectively improved.

[0047] Specifically, when the upper surface of the annular top wall 112 is recessed inward, a cavity can be formed, and a protrusion 115 can be formed at a high position in the vertical direction of the cavity. When the upper surface of the annular top wall 112 is convex outward, the protrusion 115 can be formed at a high position in the vertical direction of the convex area.

[0048] In some embodiments, such as Figure 2 and Figure 3 As shown, the thickness of the first part 1211 is greater than the thickness of the second part 1212. In this way, when machining the upper surface of the protrusion, the situation where the alloy body 11 is exposed to the external environment due to the thinness of the first part 1211 can be avoided. This simplifies the manufacturing difficulty and processing steps of the flame cover 1, and also effectively improves the reliability and practicality of the flame cover 1.

[0049] During the manufacturing process of the flame cap 1, after sequentially spraying a first material layer 121 and a second material layer 122 onto the alloy body 11, the second material layer 122 on the upper surface of the protrusion 115 is removed by machining, so that the first material layer 121 is exposed to the external environment. The machining method can be turning or milling, and this application does not specifically limit it.

[0050] The thickness of the first part 1211 located on the upper surface of the protrusion 115 can be greater than that of the second part 1212 in other parts besides the upper surface of the protrusion 115, thereby ensuring that the upper surface of the protrusion 115 has sufficient machining space.

[0051] In some embodiments, such as Figure 2 and Figure 3As shown, the protrusion 115 has a width W1, which ranges from 1 mm to 10 mm; and / or, the protrusion 115 has a height H1, which ranges from 0.2 mm to 2 mm. Thus, the protrusion 115 having the aforementioned width and / or height ranges ensures sufficient operating space during machining of its upper surface, preventing damage to the annular top wall 112, inner side wall 113, or outer side wall 114 of the alloy body 11 due to insufficient width or height during machining, effectively improving the yield of the flame cap 1.

[0052] Specifically, the width W1 ranges from 1 mm to 10 mm, for example, 1 mm, 3 mm, 5 mm, 7 mm, 10 mm, etc.

[0053] Specifically, the value of height H1 ranges from 0.2 mm to 2 mm, for example, 0.2 mm, 0.8 mm, 1 mm, 1.5 mm, 2 mm, etc.

[0054] In some embodiments, such as Figure 2 and Figure 3 As shown, the upper surface of the protrusion 115 is constructed as a plane, or the upper surface of the protrusion 115 is recessed inward or protruded outward to form an arc-shaped surface. In this way, the upper surface of the protrusion 115 can be directly machined into a plane or an arc-shaped surface according to different machining methods, without additional machining steps, effectively simplifying the machining steps and processes of the flame cover 1.

[0055] Specifically, when removing the second material layer 122 from the upper surface of the protrusion 115 by means of machining, different machining methods can be used to directly chisel out the upper surface of the protrusion 115 to form a flat or curved surface.

[0056] In some embodiments, the alloy body 11 is constructed as a stainless steel body. Thus, the stainless steel body has a relatively lower manufacturing cost compared to copper alloys or titanium alloys. Using a stainless steel alloy body 11 can effectively reduce the manufacturing cost of the flame cover 1, thereby meeting the user's purchasing needs and reducing the user's purchasing burden.

[0057] According to another aspect of this utility model, such as Figure 4 As shown, a burner 2 is also provided, including a flame distribution seat 21, an injector tube 22, and a flame cap 1 as described above, the flame cap 1 being disposed on the flame distribution seat 21. Since the flame cap 1 as described above has the aforementioned beneficial effects, the burner 2 including the flame cap 1 as described above also has the aforementioned beneficial effects, which will not be elaborated further here.

[0058] Specifically, the ejector tube 22 can be inserted into the burner seat 21, and one end of the ejector tube 22 can be connected to the gas source, while the other end of the ejector tube 22 can be located in the mixing chamber 111 of the burner cap 1. The burner seat 21 can evenly distribute the gas delivered by the ejector tube 22 to each combustion zone, and the burner cap 1, which is set on the burner seat 21, can evenly disperse the gas into multiple small flames using multiple flame outlet holes 116 on the burner cap 1 when the burner 2 is burning, thereby increasing the combustion area of ​​the burner 2 and improving the heating efficiency of the burner 2.

[0059] According to another aspect of this utility model, such as Figure 5 As shown, a stove 3 is also provided, including a bottom shell 31, a panel 32, and a burner 2 as described above. The bottom shell 31 forms an open mounting cavity, and the panel 32 covers the opening. The panel 32 has a through hole 321 through which the burner 2 passes, with part of the burner 2 located inside the mounting cavity and part of the burner 2 located outside the mounting cavity. Since the burner 2 described above has the aforementioned beneficial effects, the stove 3 including the burner 2 described above also has the aforementioned beneficial effects, which will not be elaborated further here.

[0060] Specifically, the panel 32 can be a glass panel 32 or a metal panel 32. The panel 32 can be covered on the bottom shell 31 to form a mounting cavity. Part of the burner 2 can be set in the mounting cavity, and part of the burner 2 can extend out of the mounting cavity through the through hole 321 to heat cookware and other items.

[0061] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0062] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0063] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0064] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0065] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flame cap, characterized in that, include: An alloy body, the alloy body enclosing a gas mixing cavity, and the alloy body having a first outer surface located outside the gas mixing cavity; A first material layer is formed on the first outer surface, and the first material layer has a second outer surface remote from the first outer surface; as well as A second material layer is formed on the second outer surface, and at least a portion of the first material layer is exposed outside the second material layer; The first material layer is made of a corrosion-resistant material, and the second material layer is made of a high-temperature resistant material.

2. The flame cap according to claim 1, characterized in that, The first material layer is constructed of copper.

3. The flame cap according to claim 1, characterized in that, The second material layer is a paint layer.

4. The flame cap according to claim 1, characterized in that, The alloy body has an annular top wall, an inner side wall, and an outer side wall. The inner side wall is connected to the inner ring of the annular top wall, and the outer side wall is connected to the outer ring of the annular top wall. The first material layer is formed on the outer surface of the annular top wall, the outer surface of the inner side wall, and the outer surface of the outer side wall.

5. The flame cap according to claim 4, characterized in that, The annular top wall includes a protrusion, the height of which does not exceed the upper surface of the protrusion. The first material layer has a first portion and a second portion, the first portion corresponding to the upper surface of the protrusion, and the portion of the first material layer other than the first portion forming the second portion, with the second material layer formed on the second portion.

6. The flame cap according to claim 5, characterized in that, The annular top wall is inclined, and the height of the annular top wall decreases from the end near the outer side wall to the end near the inner side wall. The protrusion is formed at the end of the annular top wall near the outer side wall. Alternatively, the height of the annular top wall increases from the end near the outer side wall to the end near the inner side wall. The protrusion is formed at the end of the annular top wall near the inner side wall.

7. The flame cap according to claim 5, characterized in that, The upper surface of the annular top wall is recessed inward or protruded outward to form an arc-shaped surface, and the protrusion is formed on the annular top wall.

8. The flame cap according to claim 5, characterized in that, The thickness of the first part is greater than the thickness of the second part.

9. The flame cap according to claim 5, characterized in that, The protrusion has a width W1, the width W1 being in the range of 1mm to 10mm; and / or, The protrusion has a height H1, which ranges from 0.2 mm to 2 mm.

10. The flame cap according to claim 5, characterized in that, The upper surface of the protrusion is constructed as a plane, or the upper surface of the protrusion is recessed inward or protruded outward to form an arc-shaped surface.

11. The flame cap according to claim 1, characterized in that, The alloy body is constructed of stainless steel.

12. A burner, characterized in that, It includes a ignition base, an ejector tube, and a flame cap as described in any one of claims 1 to 11, the flame cap being disposed on the ignition base.

13. A stove, characterized in that, The device includes a bottom shell, a panel, and a burner as described in claim 12, wherein the bottom shell forms a mounting cavity with an opening, the panel covers the opening, the panel has a through hole, the burner passes through the through hole, and a portion of the burner is located inside the mounting cavity and a portion of the burner is located outside the mounting cavity.

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