Fire cover assembly, combustor and gas stove

Abstract

The utility model relates to the technical field of combustors, and particularly discloses a fire cover assembly, a combustor and a gas stove, the fire cover assembly comprises an inner fire cover and an outer fire cover, the outer fire cover is arranged on the periphery of the inner fire cover, and the outer peripheral wall of the inner fire cover abuts against the inner peripheral wall of the outer fire cover; a plurality of first fire holes arranged in the circumferential direction of the inner fire cover at intervals are defined between the inner fire cover and the outer fire cover. According to the fire cover assembly, the inner fire cover and the outer fire cover abut against each other, the structure of the fire cover assembly is simplified, the first fire holes are formed between the inner fire cover and the outer fire cover, a blank heating area is prevented from being generated between the inner fire cover and the outer fire cover, the heating uniformity and the heating efficiency of a burner can be improved, and then the energy efficiency of a gas stove is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, and particularly relates to a burner cap assembly, a burner and a gas stove. Background Art

[0002] The gas stove releases gas through the burner holes arranged on the burner cap, and mixes with air to form a flame. The unreasonable design of the burner holes on the burner cap affects the distribution of the flame, and further affects the heating uniformity and combustion efficiency. Summary of the Utility Model

[0003] In view of this, an object of the utility model is to provide a burner cap assembly, which can improve the heating uniformity and heating efficiency.

[0004] Another object of the utility model is to provide a burner including the upper burner cap assembly.

[0005] A further object of the utility model is to provide a gas stove including the above burner.

[0006] The burner cap assembly according to the first aspect embodiment of the utility model includes: an inner burner cap and an outer burner cap. The outer burner cap is arranged on the periphery of the inner burner cap, and the outer peripheral wall of the inner burner cap abuts against the inner peripheral wall of the outer burner cap. A plurality of first burner holes are defined between the inner burner cap and the outer burner cap and are arranged at intervals in the circumferential direction of the inner burner cap.

[0007] In the burner cap assembly according to the embodiment of the utility model, the inner burner cap and the outer burner cap abut against each other, which simplifies the structure of the burner cap assembly. Moreover, the first burner holes are formed between the inner burner cap and the outer burner cap, avoiding the generation of blank heating areas between the inner burner cap and the outer burner cap, and can improve the heating uniformity and heating efficiency of the burner, thereby improving the energy efficiency of the gas stove.

[0008] In addition, the burner cap assembly according to the above embodiment of the utility model may further have the following additional technical features:

[0009] In some embodiments, one of the inner burner cap and the outer burner cap is supported by the other.

[0010] In some embodiments, one of the outer peripheral wall of the inner burner cap and the inner peripheral wall of the outer burner cap has a convex platform, and one of the outer peripheral wall of the inner burner cap and the inner peripheral wall of the outer burner cap abuts against the convex platform.

[0011] In some embodiments, the convex platform is located on the outer peripheral wall of the inner burner cap, and the side of the convex platform facing the outer burner cap gradually extends outwardly and obliquely from top to bottom, so that the outer burner cap is supported by the convex platform.

[0012] In some embodiments, the outer peripheral wall of the inner burner cap has a plurality of tooth portions circumferentially spaced apart therefrom, and a groove portion is formed between two adjacent tooth portions, and the groove portion and the inner peripheral wall of the outer burner cap define the first flame holes.

[0013] In some embodiments, a flame stabilizing groove is further defined between the outer peripheral wall of the inner burner cap and the inner peripheral wall of the outer burner cap, the flame stabilizing groove is an annular groove extending along the circumferential direction of the inner burner cap, and the flame stabilizing groove communicates with a plurality of the groove portions.

[0014] In some embodiments, the tooth portions include lower tooth portions and upper tooth portions arranged axially along the inner burner cap, a plurality of the lower tooth portions abut against the inner peripheral wall of the outer burner cap, a plurality of the upper tooth portions are spaced apart from the inner peripheral wall of the outer burner cap, and the flame stabilizing groove is located between a plurality of the upper tooth portions and the inner peripheral wall of the outer burner cap.

[0015] In some embodiments, the tooth tops of the tooth portions are configured to incline outwardly gradually from top to bottom.

[0016] In some embodiments, the tooth portions are configured to extend obliquely along the circumferential direction of the inner burner cap from top to bottom.

[0017] In some embodiments, the inner peripheral wall of the outer burner cap and the wall body opposite to the inner peripheral wall of the outer burner cap of the groove portion are both configured to extend outwardly gradually from top to bottom.

[0018] In some embodiments, the outer burner cap has at least one flame hole group, each flame hole group includes a plurality of second flame holes circumferentially spaced apart along the inner burner cap, and the second flame holes penetrate through both end faces of the outer burner cap.

[0019] In some embodiments, in each flame hole group, a flame transfer groove is provided between two adjacent second flame holes, and the flame transfer groove communicates with two adjacent second flame holes.

[0020] In some embodiments, the number of the flame hole groups is multiple, the multiple flame hole groups are arranged radially in the outer burner cap, and in the multiple flame hole groups, two adjacent second flame holes are arranged staggeredly in the radial direction.

[0021] In some embodiments, the second flame holes are configured to extend obliquely outwardly gradually from top to bottom along the axial direction of the outer burner cap.

[0022] A burner according to an embodiment of the second aspect of the present invention includes: a burner head assembly and the foregoing burner cap assembly, the burner head assembly has an inner ring channel and an outer ring channel; the burner cap assembly is mounted on the burner head assembly, the inner burner cap corresponds to the inner ring channel, and the outer burner cap corresponds to the outer ring channel.

[0023] The burner according to the embodiment of the present utility model can improve the heating uniformity and heating efficiency of the burner by providing the aforementioned burner cap assembly.

[0024] The gas stove according to the third aspect embodiment of the present utility model, the aforementioned burner.

[0025] The gas stove according to the embodiment of the present utility model can improve the heating energy efficiency of the gas stove by providing the aforementioned burner.

[0026] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of this application. Description of the Drawings

[0027] Figure 1 is a schematic diagram of the burner cap assembly according to the embodiment of the present utility model.

[0028] Figure 2 is Figure 1 a cross-sectional schematic diagram of.

[0029] Figure 3 is a cross-sectional schematic diagram of the burner cap assembly according to the embodiment of the present utility model.

[0030] Figure 4 is an exploded schematic diagram of the burner cap assembly according to the embodiment of the present utility model.

[0031] Figure 5 is a cross-sectional schematic diagram of the burner cap assembly according to another embodiment of the present utility model.

[0032] Figure 6 is Figure 5 an enlarged schematic diagram of the circled area A in.

[0033] Figure 7 is a schematic diagram of the inner burner cap according to the embodiment of the present utility model.

[0034] Figure 8 is a schematic diagram of the burner cap assembly in another direction according to the embodiment of the present utility model.

[0035] Figure 9 is a cross-sectional schematic diagram of the outer burner cap according to the embodiment of the present utility model.

[0036] Figure 10 is a schematic diagram of the burner according to the embodiment of the present utility model.

[0037] Figure 11 is a cross-sectional schematic diagram of the burner according to the embodiment of the present utility model.

[0038] Figure 12 is a cross-sectional schematic diagram of the burner in another direction according to the embodiment of the present utility model.

[0039] Reference numerals:

[0040] Burner 1000, burner cap assembly 100, inner burner cap 10, first flame holes 11, bosses 12, tooth parts 13, upper tooth parts 131, lower tooth parts 132, tooth tips 133, groove parts 14, outer burner cap 20, flame hole groups 21, second flame holes 211, flame transfer grooves 22, flame stabilizing grooves 30, burner head assembly 200, inner ring channel 210, outer ring channel 220. Detailed implementation manners

[0041] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0042] Combined with Figure 1 and Figure 2 , according to the burner cap assembly 100 of the embodiment of the present utility model, it includes an inner burner cap 10 and an outer burner cap 20. The outer burner cap 20 is arranged on the periphery of the inner burner cap 10, and the outer peripheral wall of the inner burner cap 10 abuts against the inner peripheral wall of the outer burner cap 20. A plurality of first flame holes 11 are defined between the inner burner cap 10 and the outer burner cap 20 and are circumferentially spaced apart on the inner burner cap 10.

[0043] Specifically, the burner cap assembly 100 can be used for the burner 1000 of a gas device. By providing flame holes on the burner cap assembly 100 to emit flames, the distribution of the flame holes affects the heat output and heating uniformity. By abutting the inner burner cap 10 and the outer burner cap 20 and defining a plurality of first flame holes 11 between the inner burner cap 10 and the outer burner cap 20, the burner 1000 can emit flames from the first flame holes 11 between the inner burner cap 10 and the outer burner cap 20, so that no blank heating area will be generated between the inner burner cap 10 and the outer burner cap 20, and the heating uniformity and heating efficiency of the burner 1000 can be improved.

[0044] Exemplarily, the first flame holes 11 can be inner flame holes. The outer burner cap 20 can be provided with second flame holes 211. The second flame holes 211 can surround the periphery of the first flame holes 11. The first flame holes 11 can form a central flame, and the second flame holes 211 can form a peripheral flame.

[0045] In the related art, the inner fire cover and the outer fire cover are independent structures, and inner fire holes are independently formed on the inner fire cover. A blank heating area will be generated between the inner fire cover and the outer fire cover, affecting the heating uniformity, and further affecting the heating effect and heating efficiency. Compared with the related art, the fire cover assembly 100 of the embodiment of the present utility model can optimize the flame distribution by defining the first fire holes 11 between the inner fire cover 10 and the outer fire cover 20, so that no heating blank area will be generated between the inner fire cover 10 and the outer fire cover 20, improving the heating energy efficiency and heating uniformity.

[0046] According to the fire cover assembly 100 of the embodiment of the present utility model, the inner fire cover 10 and the outer fire cover 20 are in abutment, simplifying the structure of the fire cover assembly 100, and the first fire holes 11 are formed between the inner fire cover 10 and the outer fire cover 20. On the one hand, it can avoid generating a blank heating area between the inner fire cover 10 and the outer fire cover 20, improving the heating uniformity and heating efficiency of the burner 1000, and further improving the energy efficiency of the gas stove. On the other hand, it can reduce the processing difficulty of the first fire holes 11, which is beneficial to improving the production efficiency.

[0047] Among them, a plurality of first fire holes 11 are defined between the inner fire cover 10 and the outer fire cover 20 and are arranged at intervals in the circumferential direction of the inner fire cover 10. For example, a plurality of grooves can be arranged at intervals on the outer peripheral wall of the inner fire cover 10, and the first fire holes 11 can be defined between the plurality of grooves and the inner peripheral wall of the outer fire cover 20; for another example, a plurality of grooves can be arranged at intervals on the inner peripheral wall of the outer fire cover 20, and the first fire holes 11 can be defined between the plurality of grooves and the outer peripheral wall of the inner fire cover 10; for still another example, a plurality of grooves are arranged at intervals on both the inner peripheral wall of the outer fire cover 20 and the outer peripheral wall of the inner fire cover 10, and the grooves of the outer fire cover 20 and the grooves of the inner fire cover 10 jointly define the first fire holes 11.

[0048] In addition, the outer peripheral wall of the inner fire cover 10 abuts against the inner peripheral wall of the outer fire cover 20, which can mean that the entire outer peripheral wall of the inner fire cover 10 in the up and down direction can abut against the inner peripheral wall of the outer fire cover 20; or, it can mean that a part of the outer peripheral wall of the inner fire cover 10 in the up and down direction abuts against the inner peripheral wall of the outer fire cover 20. For example, the position of the outer peripheral wall of the inner fire cover 10 near the lower part can abut against the inner peripheral wall of the outer fire cover 20, and there is a gap between the position of the outer peripheral wall of the inner fire cover 10 near the upper part and the inner peripheral wall of the outer fire cover 20, or the position of the outer peripheral wall of the inner fire cover 10 near the upper part abuts against the inner peripheral wall of the outer fire cover 20.

[0049] The inner fire cover 10 and the outer fire cover 20 can be connected by means of lapping. In other words, one of the inner fire cover 10 and the outer fire cover 20 can be supported by the other, or both the inner fire cover 10 and the outer fire cover 20 can be supported on the gas passage of the burner 1000.

[0050] In some embodiments of the present utility model, one of the inner fire cap 10 and the outer fire cap 20 is supported by the other. Specifically, the inner fire cap 10 can be supported by the outer fire cap 20, or the outer fire cap 20 is supported by the inner fire cap 10, which can simplify the structure of the fire cap assembly 100 and improve the assembly efficiency of the fire cap assembly 100. Exemplarily, a support portion can be provided on the outer peripheral surface of the inner fire cap 10, and the outer fire cap 20 can be sleeved on the inner fire cap 10 to realize the support of the inner fire cap 10 for the outer fire cap 20, or a support portion can be provided on the inner peripheral surface of the outer fire cap 20, and the inner fire cap 10 can be loaded into the outer fire cap 20 to realize the support of the outer fire cap 20 for the inner fire cap 10.

[0051] Combined with Figure 3 and Figure 4 , in some embodiments of the present utility model, one of the outer peripheral wall of the inner fire cap 10 and the inner peripheral wall of the outer fire cap 20 has a boss 12, and one of the outer peripheral wall of the inner fire cap 10 and the inner peripheral wall of the outer fire cap 20 abuts against the boss 12. Specifically, the outer peripheral wall of the inner fire cap 10 can have the boss 12, and the inner peripheral wall of the outer fire cap 20 abuts against the boss 12. The boss 12 can position and support the outer fire cap 20, which is convenient for the assembly of the fire cap assembly 100 and improves the structural stability; it can also be that the inner peripheral wall of the outer fire cap 20 has the boss 12, and the outer peripheral wall of the inner fire cap 10 abuts against the boss 12. The boss 12 can position and support the inner fire cap 10, which is convenient for the assembly of the fire cap assembly 100 and improves the structural stability.

[0052] Furthermore, combined with Figure 3 , the boss 12 is located on the outer peripheral wall of the inner fire cap 10 and the side of the boss 12 facing the outer fire cap 20 gradually extends outwardly and obliquely from top to bottom, so that the outer fire cap 20 is supported by the boss 12. Exemplarily, when assembling the fire cap assembly 100, the outer fire cap 20 can be sleeved onto the inner fire cap 10 in the direction from top to bottom. The boss 12 can position the installation of the outer fire cap 20 and can support the outer fire cap 20, thereby improving the assembly efficiency of the fire cap assembly 100 and the structural stability of the fire cap assembly 100. Among them, the inner peripheral surface of the outer fire cap 20 can also gradually incline outwardly from top to bottom. The cooperation between the boss 12 and the inner peripheral surface of the outer fire cap 20 can improve the support stability of the outer fire cap 20, and after the outer fire cap 20 is sleeved onto the inner fire cap 10, the outer fire cap 20 can limit the inner fire cap 10 and improve the structural stability of the inner fire cap 10.

[0053] Combined with Figure 1 and Figure 4 , in some embodiments of the present utility model, the outer peripheral wall of the inner fire cap 10 has a plurality of tooth portions 13 arranged at intervals in its circumferential direction, and a groove portion 14 is formed between two adjacent tooth portions 13. The groove portion 14 and the inner peripheral wall of the outer fire cap 20 define a first fire hole 11.

[0054] Specifically, a plurality of groove portions 14 and the inner peripheral wall of the outer burner cap 20 can define a plurality of first flame holes 11. The first flame holes 11 can be used to distribute gas. The gas passes through the plurality of first flame holes 11 to form a plurality of small flames above the burner cap assembly 100, improving the heating uniformity.

[0055] By providing the tooth portions 13 on the inner burner cap 10, and the groove portions 14 between the tooth portions 13 and the inner peripheral wall of the outer burner cap 20 define the first flame holes 11, the processing difficulty of the first flame holes 11 can be reduced, the structure of the burner cap assembly 100 can be simplified, and compared with independently forming the first flame holes 11 on the inner burner cap 10, it can avoid generating a blank heating area between the inner burner cap 10 and the outer burner cap 20, thereby improving the heating uniformity of the burner 1000.

[0056] Among them, the groove portions 14 can be set in different shapes. For example, the groove portions 14 can be rectangular grooves, U-shaped grooves, V-shaped grooves, etc.

[0057] Combined with Figure 5 and Figure 6 , further, an annular flame stabilizing groove 30 is defined between the outer peripheral wall of the inner burner cap 10 and the inner peripheral wall of the outer burner cap 20. The flame stabilizing groove 30 is an annular groove extending along the circumferential direction of the inner burner cap 10 and the flame stabilizing groove 30 communicates with the plurality of groove portions 14. A stable flame can be formed in the flame stabilizing groove 30. The stable flame can prevent the flame formed by the first flame holes 11 from deflecting, enabling the gas at the first flame holes 11 to burn fully and improving the combustion stability.

[0058] Combined with Figure 6 and Figure 7 , in some embodiments of the present utility model, the tooth portion 13 includes an upper tooth portion 131 and a lower tooth portion 132 arranged along the axial direction of the inner burner cap 10. A plurality of lower tooth portions 132 are in contact with the inner peripheral wall of the outer burner cap 20, and a plurality of upper tooth portions 131 are spaced apart from the inner peripheral wall of the outer burner cap 20 and the flame stabilizing groove 30 is located between the plurality of upper tooth portions 131 and the inner peripheral wall of the outer burner cap 20. Specifically, the lower tooth portion 132 can be used to position and support the outer burner cap 20, improving the installation efficiency of the burner cap assembly 100 and the structural stability after installation, and a flame stabilizing groove 30 can be formed between the upper tooth portion 131 and the inner peripheral wall of the outer burner cap 20, facilitating improving the combustion stability of the gas at the first flame holes 11.

[0059] Combined with Figure 7 , in some embodiments of the present utility model, the tooth top 133 of the tooth portion 13 is configured to be gradually inclined outward from top to bottom, and the groove portion 14 formed between adjacent tooth portions 13 is also configured to be gradually inclined outward from top to bottom. The groove portion 14 can guide the gas flow, thereby optimizing the flame shape formed by the first flame holes 11 to gather the flame formed by the first flame holes 11. It should be noted that the tooth top 133 is the highest point of the tooth portion 13, that is, the part of the tooth shape farthest from the axis of the inner burner cap 10.

[0060] Combined Figure 7 , in some embodiments of the present utility model, the tooth portion 13 is configured to: extend obliquely along the circumferential direction of the inner fire cover 10 from top to bottom, and the groove portion 14 formed between adjacent tooth portions 13 is also configured to extend obliquely along the circumferential direction of the inner fire cover 10 from top to bottom. The groove portion 14 can conduct the gas flow, optimize the flame shape formed by the first fire hole 11, enable the first fire hole 11 to form a swirling fire, and improve the heating uniformity and heating effect.

[0061] Combined Figure 6 , in some embodiments of the present utility model, the inner peripheral wall of the outer fire cover 20 and the wall body opposite to the inner peripheral wall of the outer fire cover 20 of the groove portion 14 are both configured to: gradually extend outward from top to bottom. Specifically, the inner peripheral wall of the outer fire cover 20 extends obliquely outward gradually along the direction from top to bottom, the wall body opposite to the inner peripheral wall of the outer fire cover 20 of the groove portion 14 extends obliquely outward gradually along the direction from top to bottom, and the groove portion 14 and the inner peripheral wall of the outer fire cover 20 define the first fire hole 11. The first fire hole 11 is configured to gradually incline outward along the direction from top to bottom. In other words, the first fire hole 11 is configured to gradually incline inward from bottom to top, which can gather the flame, reduce heat loss, and improve the heating efficiency of the burner 1000.

[0062] Combined with the foregoing, the first fire hole 11 is defined between the inner fire cover 10 and the outer fire cover 20, so that there will be no blank heating area between the inner fire cover 10 and the outer fire cover 20, and the first fire hole 11 is configured to gradually incline inward from bottom to top to form a gathered flame. The outer fire cover 20 may be provided with a second fire hole 211. The first fire hole 11 can form a central flame, and the second fire hole 211 can form a peripheral flame. The first fire hole 11 can not only avoid generating a blank heating area between the inner fire cover 10 and the outer fire cover 20, but also gather the central flame, thereby overall improving the heating coverage area above the fire cover assembly 100.

[0063] Combined Figure 1 and Figure 8 , in some embodiments of the present utility model, the outer fire cover 20 has at least one fire hole group 21. Each fire hole group 21 includes a plurality of second fire holes 211 spaced apart along the circumferential direction of the inner fire cover 10. The second fire holes 211 can be configured to distribute the gas below the outer fire cover 20, and the second fire holes 211 penetrate through both end faces of the outer fire cover 20.

[0064] Specifically, the second fire holes 211 penetrate through the upper and lower end faces of the fire cover. Combined Figure 5 , the second fire holes 211 penetrate through both end faces of the outer fire cover 20 along the up and down direction, which is convenient for the cooperation of the first fire hole 11 and the second fire holes 211 to form a central flame and a peripheral flame above the fire cover assembly 100 and improve the flame coverage area.

[0065] It should be noted that the aforementioned one set of flame holes 21 may include a plurality of second flame holes 211. Exemplarily, in combination with Figure 8 , the outer burner cap 20 may include three sets of flame holes 21. Among them, a circle of second flame holes 211 distributed along the circumference of the inner burner cap 10 constitutes one set of flame holes 21. Of course, the number of sets of flame holes 21 may also be one, two, four, etc., and can be specifically adjusted according to the specifications of the gas stove, etc. For example, it can be adjusted according to the fire power value of the gas stove.

[0066] In combination with Figure 5 and Figure 8 , in some embodiments of the present invention, in each set of flame holes 21, there is a flame transfer groove 22 between adjacent two second flame holes 211. The flame transfer groove 22 communicates with adjacent two second flame holes 211, and the flame transfer groove 22 can communicate the flames between adjacent two flame holes, so that the heat distribution above the outer burner cap 20 is uniform, and it helps the gas at the second flame holes 211 to burn fully.

[0067] In combination with Figure 8 , in some embodiments of the present invention, the number of sets of flame holes 21 is multiple, and the multiple sets of flame holes 21 are arranged radially on the outer burner cap 20, which can increase the area covered by the flame. Among the multiple sets of flame holes 21, adjacent two second flame holes 211 are arranged staggeredly in the radial direction. In other words, in the radial direction of the burner cap assembly 100, adjacent second flame holes 211 are arranged staggeredly to avoid excessive local heat concentration, and can improve the coverage range of the flame of the second flame holes 211 and improve the heating uniformity.

[0068] Optionally, in combination with Figure 8 , among the multiple sets of flame holes 21, the diameter of the second flame holes 211 far from the inner burner cap 10 is larger than the diameter of the second flame holes 211 close to the inner burner cap 10, so as to generate flames of different sizes at different positions of the second flame holes 211 in the radial direction. The diameter of the second flame holes 211 far from the inner burner cap 10 is larger, which can generate a larger fire power, and the diameter of the second flame holes 211 close to the inner burner cap 10 is smaller, which can generate a smaller fire power, facilitating the adjustment of the fire power according to different cooking requirements.

[0069] Optionally, among the multiple sets of flame holes 21, the distance between adjacent two second flame holes 211 in the outermost set of flame holes 21 is greater than the distance between adjacent two second flame holes 211 in the innermost set of flame holes 21. In the embodiment where there is a flame transfer groove 22 between adjacent two second flame holes 211, the extension length of the outermost flame transfer groove 22 is greater than the extension length of the innermost flame transfer groove 22.

[0070] Among them, the number of second flame holes 211 in the multiple sets of flame holes 21 may be equal or not equal, and can be specifically selected according to needs.

[0071] In addition, in combination with Figure 5 the upper end surface of the outer burner cap 20 can be configured to extend in a direction approaching the inner burner cap 10 along the direction from top to bottom. For example, the surface where the upper end surface of the outer burner cap 20 is located is a conical surface; for another example, the surface where the upper end surface of the outer burner cap 20 is located is a concave arc surface. By setting it like this, the shape of the flame can be optimized, a converging flame can be formed, heat loss can be reduced, the heating efficiency can be improved, and thus the energy efficiency of the gas stove can be enhanced.

[0072] Optionally, the extended surface of the upper end surface of the outer burner cap 20 and the extended surface of the upper end surface of the inner burner cap 10 are in smooth transition, which can further optimize the shape of the flame and improve the energy efficiency of the gas stove. Here, the "extended surface of the upper end surface of the outer burner cap 20" means extending and stretching according to the original trend on the basis of the upper end surface of the outer burner cap 20, and the "extended surface of the upper end surface of the inner burner cap 10" means extending and stretching according to the original trend on the basis of the upper end surface of the inner burner cap 10.

[0073] In combination with Figure 9 in some embodiments of the present utility model, the second fire holes 211 are configured to gradually extend outwardly and obliquely from top to bottom along the axial direction of the outer burner cap 20, so that the second fire holes 211 form a flame converging inwardly, avoiding heat loss and improving the heating efficiency of the burner 1000.

[0074] In combination with Figure 10 and Figure 11 the burner 1000 according to the embodiment of the present utility model includes: a burner head assembly 200 and the aforementioned burner cap assembly 100. The burner head assembly 200 has an inner ring channel 210 and an outer ring channel 220. The burner cap assembly 100 is installed on the burner head assembly 200. The inner burner cap 10 corresponds to the inner ring channel 210, and the inner ring channel 210 can supply gas to the inner burner cap 10. The outer burner cap 20 corresponds to the outer ring channel 220, and the outer ring channel 220 can supply gas to the outer burner cap 20.

[0075] In some specific embodiments of the present utility model, the inner burner cap 10 and the outer burner cap 20 are connected by a lapping method, and a plurality of first fire holes 11 arranged at circumferential intervals of the inner burner cap 10 are defined between the inner burner cap 10 and the outer burner cap 20, so that there is no blank area between the inner burner cap 10 and the outer burner cap 20, which is beneficial to improving the heating uniformity of the burner 1000 and further improving the heating efficiency of the burner 1000.

[0076] In combination with Figure 11 and Figure 12, Exemplarily, the inner burner cap 10 can be lapped on the inner ring channel 210. The outer burner cap 20 can be sleeved on the inner burner cap 10 and lapped on the outer ring channel 220. A boss 12 can be provided at a position near the lower part of the outer peripheral surface of the inner burner cap 10. The boss 12 abuts against the inner peripheral surface of the outer burner cap 20. The boss 12 can position and support the outer burner cap 20, and an annular flame stabilizing groove 30 is formed between the inner burner cap 10 and the outer burner cap 20, improving the combustion stability of the flame at the first flame holes 11.

[0077] The present utility model also provides a gas stove, including the aforementioned burner 1000. By providing the aforementioned burner 1000, the heating efficiency of the burner 1000 can be improved, and further the energy efficiency of the gas stove can be improved.

[0078] The various embodiments / implementation manners of the present utility model can be combined with each other without contradiction.

[0079] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model.

[0080] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0081] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0082] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0083] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0084] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A fire cover assembly (100), characterized in that: include: An inner fire cover (10) and an outer fire cover (20), wherein the outer fire cover (20) is arranged on the periphery of the inner fire cover (10) and the outer peripheral wall of the inner fire cover (10) abuts against the inner peripheral wall of the outer fire cover (20), and a plurality of first fire holes (11) are defined between the inner fire cover (10) and the outer fire cover (20) and are arranged at intervals in the circumferential direction of the inner fire cover (10).

2. The fire cover assembly (100) according to claim 1, characterized in that: One of the inner fire cover (10) and the outer fire cover (20) is supported on the other.

3. The fire cover assembly (100) according to claim 1, characterized in that: One of the outer peripheral wall of the inner fire cover (10) and the inner peripheral wall of the outer fire cover (20) has a boss (12), and one of the outer peripheral wall of the inner fire cover (10) and the inner peripheral wall of the outer fire cover (20) abuts against the boss (12).

4. The fire cover assembly (100) according to claim 3, characterized in that: The boss (12) is located on the outer peripheral wall of the inner fire cover (10), and the boss (12) extends gradually outwardly from top to bottom toward one side of the outer fire cover (20), so that the outer fire cover (20) is supported on the boss (12).

5. The fire cover assembly (100) according to any one of claims 1 to 4, characterized in that: The outer peripheral wall of the inner fire cover (10) has a plurality of teeth (13) arranged at intervals in the circumferential direction thereof, a groove (14) is formed between two adjacent teeth (13), and the groove (14) and the inner peripheral wall of the outer fire cover (20) define the first fire hole (11).

6. The fire cover assembly (100) according to claim 5, characterized in that: A flame stabilizing groove (30) is also defined between the outer circumferential wall of the inner fire cover (10) and the inner circumferential wall of the outer fire cover (20). The flame stabilizing groove (30) is an annular groove extending along the circumference of the inner fire cover (10) and is connected to the plurality of groove portions (14).

7. The fire cover assembly (100) according to claim 6, characterized in that: The tooth portion (13) includes a lower tooth portion (132) and an upper tooth portion (131) arranged along the axial direction of the inner fire cover (10), a plurality of the lower tooth portions (132) abut against the inner circumferential wall of the outer fire cover (20), a plurality of the upper tooth portions (131) are spaced apart from the inner circumferential wall of the outer fire cover (20), and the flame stabilizing groove (30) is located between the plurality of the upper tooth portions (131) and the inner circumferential wall of the outer fire cover (20).

8. The fire cover assembly (100) according to claim 5, characterized in that: The tooth top (133) of the tooth portion (13) is configured to gradually tilt outward from top to bottom; And / or, the tooth portion (13) is configured to extend obliquely from top to bottom along the circumference of the inner fire cover (10); And / or, the inner peripheral wall of the outer fire cover (20), the groove (14) and the wall body opposite to the inner peripheral wall of the outer fire cover (20) are configured to gradually extend outward from top to bottom.

9. The fire cover assembly (100) according to any one of claims 1 to 4, characterized in that: The outer fire cover (20) has at least one fire hole group (21), each of the fire hole groups (21) includes a plurality of second fire holes (211) spaced apart along the circumference of the inner fire cover (10), and the second fire holes (211) penetrate both end faces of the outer fire cover (20).

10. The fire cover assembly (100) according to claim 9, characterized in that: In each of the fire hole groups (21), a fire transfer groove (22) is provided between two adjacent second fire holes (211), and the fire transfer groove (22) communicates with the two adjacent second fire holes (211); And / or, the number of the fire hole groups (21) is plural, the plural fire hole groups (21) are arranged radially of the outer fire cover (20), and in the plural fire hole groups (21), two adjacent second fire holes (211) are arranged staggered in the radial direction; And / or, the second fire hole (211) is configured to extend gradually and obliquely outward from top to bottom along the axial direction of the outer fire cover (20).

11. A burner (1000), characterized in that: include: A furnace head assembly (200), wherein the furnace head assembly (200) has an inner ring channel (210) and an outer ring channel (220); The fire cover assembly (100) according to any one of claims 1 to 10, wherein the fire cover assembly (100) is installed on the burner head assembly (200), the inner fire cover (10) corresponds to the inner ring channel (210), and the outer fire cover (20) corresponds to the outer ring channel (220).

12. A gas stove, characterized in that: Comprising the burner (1000) as claimed in claim 11.

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