Combustor and gas stove

Abstract

The utility model relates to the technical field of kitchen utensils, and discloses a burner and a gas stove. The gas stove comprises a combustor, the combustor comprises a furnace end assembly and a fire cover, and a first channel, a second channel and a third channel which are not communicated with one another are arranged in the furnace end assembly; the burner cap is annular, a first annular cavity and a second annular cavity are formed in the burner cap, a plurality of first fire holes communicated with the first annular cavity and a plurality of second fire holes communicated with the second annular cavity are further formed in the burner cap, the burner cap covers the burner assembly, the first annular cavity is communicated with the first channel, and the second annular cavity is communicated with the second channel. A circular seam fire hole is formed between the surface of the fire cover and the side wall of the third channel and communicates with the third channel. The burner is few in parts, simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a burner and a gas stove. Background Art

[0002] The core component of a gas stove is the burner. As living standards continue to improve, users' demands for the types of fire produced by burners are also increasing. In related technologies, some burners have three circles of fire holes: inner, middle, and outer. These holes can produce different fire patterns when fired from different circles, thus meeting different usage needs.

[0003] In the prior art, burners with inner, middle, and outer rings of flame holes typically include a burner assembly, an inner ring flame cover, a middle ring flame cover, and an outer ring flame cover. Specifically, the burner assembly is provided with three independent channels, to which a combustion supply structure can supply gas. The inner, middle, and outer ring flame covers are separately mounted on the burner assembly, so that the flame holes on the inner, middle, and outer ring flame covers are connected to the three independent gas mixing channels. Such burners have numerous components, a complex structure, and high costs. Utility Model Content

[0004] The purpose of the utility model is to provide a burner with fewer parts, simple structure and low cost.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] Burner, including:

[0007] A burner head assembly is provided with a first channel, a second channel and a third channel which are not connected to each other;

[0008] The fire cover is annular in shape, and a first annular cavity and a second annular cavity are provided in the fire cover. There are also multiple first fire holes connected to the first annular cavity and multiple second fire holes connected to the second annular cavity. The fire cover is arranged on the burner head assembly, the first annular cavity is connected to the first channel, the second annular cavity is connected to the second channel, and an annular fire hole is formed between the surface of the fire cover and the side wall of the third channel, and the annular fire hole is connected to the third channel.

[0009] As an optional solution, the fire cover includes an outer ring surface, an upper side surface, an inner ring surface and a lower side surface connected in sequence, the first fire hole is opened on the outer ring surface, the second fire hole is opened on the upper side surface, the first annular cavity and the second annular cavity are opened on the lower side surface, and the annular fire hole is formed between the inner ring surface and the side wall of the third channel.

[0010] As an optional solution, the burner assembly includes an annular support surface, the outlet of the first channel and the outlet of the second channel extend to the annular support surface, and the lower side surface is supported on the annular support surface, so that the first channel communicates with the first annular cavity, and the second channel communicates with the second annular cavity;

[0011] The outlet end of the third channel is annular and located on the inner side of the annular support surface. The inner side wall of the third channel is opposite to the inner ring circumference and forms the annular fire hole.

[0012] As an optional solution, the inner ring circumference is constructed as a conical surface with a gradually increasing cross-section from top to bottom, the upper surface of the inner side wall is higher than the annular support surface, and is constructed as a cone with a gradually increasing cross-section from top to bottom, and the upper surface of the inner side wall is arranged opposite to the inner ring circumference.

[0013] As an optional solution, the upper side surface includes a first surface and a second surface connected to each other, the first surface is horizontally arranged and connects the outer ring surface and the second surface, the second surface is connected to the inner ring surface and is constructed as a conical surface with a cross-section gradually decreasing from top to bottom, and the second fire hole is arranged on the second surface.

[0014] As an optional solution, the burner head assembly includes:

[0015] A burner body, wherein a first air inlet channel, a second air inlet channel and a third air inlet channel which are not connected to each other are provided in the burner body;

[0016] A gas distribution seat is provided with a first gas mixing channel, a second gas mixing channel and a third gas mixing channel which are not connected to each other. The gas distribution seat cover is provided on the burner body, and the fire cover cover is provided on the gas distribution seat. The first gas mixing channel connects the first air inlet channel and the first annular cavity, the second gas mixing channel connects the second air inlet channel and the second annular cavity, and the third gas mixing channel connects the third air inlet channel and the annular seam fire hole.

[0017] Another object of the present invention is to provide a gas stove which, by adopting the above-mentioned burner, has fewer parts, a simple structure and low cost.

[0018] To achieve this purpose, the present invention adopts the following technical solutions:

[0019] A gas stove comprises at least one burner as described above.

[0020] As an optional solution, the gas stove further includes:

[0021] a first air pipe and a first flow valve, wherein the first air pipe is connected to the first channel, and the first flow valve is used to adjust the opening of the first air pipe;

[0022] a second air pipe and a second flow valve, wherein the second air pipe is connected to the second channel, and the second flow valve is used to adjust the opening of the second air pipe;

[0023] A third air pipe and a third flow valve, wherein the third air pipe is connected to the third channel, and the third flow valve is used to adjust the opening of the third air pipe.

[0024] As an optional solution, the gas stove further includes an operating component, which is configured for user operation, and the first flow valve, the second flow valve and the third flow valve are all communicatively connected to the operating component.

[0025] As an optional solution, the gas stove further includes:

[0026] a first air flap and a first nozzle, wherein the first air flap is installed at the inlet of the first channel, and the first air pipe is connected to the first air flap through the first nozzle;

[0027] a second air flap and a second nozzle, wherein the second air flap is installed at the inlet of the second channel, and the second air pipe is connected to the second air flap through the second nozzle;

[0028] A third air flap and a third nozzle, wherein the third air flap is installed at the inlet of the third channel, and the third air pipe is connected to the third air flap through the third nozzle.

[0029] The beneficial effects of the utility model are:

[0030] The burner of the present invention is provided with a first channel, a second channel and a third channel which are not connected to each other in the burner head assembly, and a first fire hole which is connected to the first channel and a second fire hole which is connected to the second channel are provided on the fire cover. At the same time, an annular fire hole which is connected to the third channel is formed between the fire cover and the burner head assembly. Therefore, when the gas burner is used, combustion can be carried out at any one, two or three of the first fire hole, the second fire hole and the annular fire hole, thereby meeting the demand for fire type change; since the annular fire hole is directly assembled by the burner head assembly and the fire cover itself, and the first fire hole and the second fire hole are provided on the fire cover at the same time, the number of parts of the burner is reduced while meeting the demand for fire type change, that is, the structure of the burner is simplified, and the manufacturing cost can be reduced.

[0031] The gas stove of the utility model adopts the burner, has fewer parts, a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a partial structural diagram of a gas stove provided by a specific embodiment of the present utility model;

[0033] Figure 2 This is an exploded view of a portion of the structure of a gas stove provided in a specific embodiment of the present utility model;

[0034] Figure 3 It is a cross-sectional view of a burner provided in a specific embodiment of the present utility model.

[0035] In the picture:

[0036] 10. Burner assembly; 11. Burner body; 111. Base; 112. First ejector tube; 113. Second ejector tube; 114. Third ejector tube; 116. First air inlet channel; 117. Second air inlet channel; 118. Third air inlet channel; 12. Gas distribution base; 121. First gas mixing channel; 122. Second gas mixing channel; 123. Third gas mixing channel; 124. Annular support surface; 125. Inner sidewall; 13. First channel; 14. Second channel; 15. Third channel;

[0037] 20. Fire cover; 21. First annular cavity; 22. Second annular cavity; 23. First fire hole; 24. Second fire hole; 25. Outer ring surface; 26. Upper side surface; 261. First surface; 262. Second surface; 27. Inner ring surface; 28. Lower side surface;

[0038] 30. Annular fire hole;

[0039] 41. First trachea; 42. Second trachea; 43. Third trachea;

[0040] 51. First flow valve; 52. Second flow valve; 53. Third flow valve;

[0041] 61. First air flap; 62. Second air flap; 63. Third air flap;

[0042] 71, first nozzle; 72, second nozzle; 73, third nozzle;

[0043] 80. Operation components. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0045] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0046] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0048] This embodiment provides a burner such as Figure 1-Figure 3 As shown, the burner includes a burner assembly 10 and a fire cover 20. The burner assembly 10 is provided with a first channel 13, a second channel 14, and a third channel 15 that are not connected to each other. The first channel 13, the second channel 14, and the third channel 15 are respectively used to pass the mixed gas to be burned (a mixture of fuel gas and air). The fire cover 20 is annular, and a first annular cavity 21 and a second annular cavity 22 are provided therein. A plurality of first fire holes 23 and a plurality of second fire holes 24 are also provided therein. The plurality of first fire holes 23 are all connected to the first annular cavity 21, and the plurality of second fire holes 24 are all connected to the second annular cavity 22. The fire cover 20 is placed on the burner assembly 10, so that the first annular cavity 21 is connected to the first channel 13, and the second annular cavity 22 is connected to the second channel 14. An annular gap fire hole 30 is formed between the surface of the fire cover 20 and the side wall of the third channel 15, and the annular gap fire hole 30 is connected to the third channel 15.

[0049] The burner of this embodiment can be used to burn at any one, two or three of the first fire hole 23, the second fire hole 24 and the annular fire hole 30, thereby meeting the demand for fire type change; because the annular fire hole 30 is directly assembled by the burner head assembly 10 and the fire cover 20 itself, and the first fire hole 23 and the second fire hole 24 are simultaneously provided on the fire cover 20, the number of parts of the burner is reduced while meeting the demand for fire type change, that is, the structure of the burner is simplified, and the manufacturing cost can be reduced.

[0050] In this embodiment, the burner head assembly 10 includes a burner head body 11 and a gas distribution seat 12. A first air inlet channel 116, a second air inlet channel 117, and a third air inlet channel 118 are provided in the burner head body 11. A first gas mixing channel 121, a second gas mixing channel 122, and a third gas mixing channel 123 are provided in the gas distribution seat 12. The gas distribution seat 12 is mounted on the burner head body 11, and the fire cover 20 is mounted on the gas distribution seat 12, so that the first gas mixing channel 121 connects the first air inlet channel 116 and the first annular cavity 21, the second gas mixing channel 122 connects the second air inlet channel 117 and the second annular cavity 22, and the third gas mixing channel 123 connects the third air inlet channel 118 and the annular fire hole 30. It should be noted that the first air inlet channel 116 and the first gas mixing channel 121 constitute the first channel 13. The second air inlet channel 117 and the second gas mixing channel 122 constitute the second channel 14. The third intake passage 118 and the third gas mixing passage 123 constitute the third passage 15 .

[0051] like Figure 1 and Figure 2 As shown, the burner body 11 includes a base 111 and a first ejector tube 112, a second ejector tube 113, and a third ejector tube 114, respectively connected to the base 111. The first ejector tube 112 and the first air passage within the base 111 form a first air inlet passage 116. The inlet of the first ejector tube 112 is also the inlet of the first air inlet passage 116, and the outlet of the first air inlet passage 116 extends to the upper surface of the base 111. The second ejector tube 113 and the second air passage within the base 111 form a second air inlet passage 117. The inlet of the second ejector tube 113 is also the inlet of the second air inlet passage 117, and the outlet of the second air inlet passage 117 extends to the upper surface of the base 111. The third ejector tube 114 and the third air passage within the base 111 form a third air inlet passage 118. The inlet of the third air inlet passage 118 extends to the upper surface of the base 111.

[0052] like Figure 2As shown, the gas distribution block 12 includes four coaxially arranged sidewalls, which are defined from the outside to the inside as the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall. A first gas mixing channel 121 is formed between the first and second sidewalls, a second gas mixing channel 122 is formed between the second and third sidewalls, and a third gas mixing channel 123 is formed between the third and fourth sidewalls. In this embodiment, the fourth sidewall serves as the inner sidewall 125 of the third channel 15.

[0053] like Figure 2 and Figure 3 As shown, the fire cover 20 is annular and includes an outer circumferential surface 25, an upper side surface 26, an inner circumferential surface 27, and a lower side surface 28, which are connected in sequence. First fire holes 23 are defined on the outer circumferential surface 25, second fire holes 24 are defined on the upper side surface 26, and first and second annular cavities 21 and 22 are defined on the lower side surface 28. When the fire cover 20 is placed on the gas distribution seat 12, the first annular cavity 21 communicates with the first channel 13, and the second annular cavity 22 communicates with the second channel 14. An annular gap fire hole 30 is formed between the inner circumferential surface 27 and the sidewall of the third channel 15. In this embodiment, a first fire hole ring consisting of a plurality of first fire holes 23, a second fire hole ring consisting of a plurality of second fire holes 24, and an annular gap fire hole 30 are coaxially arranged and arranged sequentially from the inside out. The first fire hole ring forms the outer ring of fire holes, the second fire hole ring forms the middle ring of fire holes, and the annular gap fire hole 30 forms the inner ring of fire holes.

[0054] In other embodiments (not shown), it may also be that: the first fire hole is opened on the inner ring circumference, the second fire hole is opened on the upper side surface, and an annular gap fire hole is formed between the outer ring circumference and the side wall of the third channel. In this embodiment, the fire hole ring formed by multiple first fire holes is the inner ring fire hole, the fire hole ring formed by multiple second fire holes is the middle ring fire hole, and the annular gap fire holes constitute the outer ring fire hole.

[0055] Specifically, if Figure 2 and Figure 3 As shown, the burner head assembly 10 includes an annular support surface 124, onto which the outlets of the first channel 13 and the second channel 14 extend. The lower side 28 of the fire cover 20 is supported on the annular support surface 124, allowing the first channel 13 to communicate with the first annular cavity 21, and the second channel 14 to communicate with the second annular cavity 22. The outlet end of the third channel 15 is annular and located inside the annular support surface 124. The inner sidewall 125 of the third channel 15 opposes the inner circumferential surface 27 and forms an annular fire hole 30. In this embodiment, the lower end face of the fire cover 20 is mounted on the gas distribution seat 12. The upper end faces of the first, second, and third side walls of the gas distribution seat 12 collectively form the annular support surface 124. The first gas mixing channel 121 communicates with the first annular cavity 21, and the second gas mixing channel 122 communicates with the second annular cavity 22.

[0056] like Figure 3 As shown, inner circumferential surface 27 is constructed as a tapered surface with a gradually increasing cross-section from top to bottom. The upper surface of inner sidewall 125 is higher than annular support surface 124 and is also constructed as a tapered surface with a gradually increasing cross-section from top to bottom. The upper surface of inner sidewall 125 is disposed opposite inner circumferential surface 27, forming an annular flame hole 30. The tapered upper surfaces of both inner circumferential surface 27 and inner sidewall 125 give an annular flame hole 30 an inclined extension trajectory and are located below the upper surface. This prevents overflow from the cookware from clogging the annular flame hole 30 during use of the burner.

[0057] like Figure 3 As shown, the upper side surface 26 includes a first surface 261 and a second surface 262 that are connected. The first surface 261 is horizontally arranged and connects the outer circumferential surface 25 and the second surface 262. The second surface 262 connects the inner circumferential surface 27 and is constructed as a tapered surface with a gradually decreasing cross-section from top to bottom. The second fire hole 24 is provided on the second surface 262. By configuring the second surface 262 as an inclined surface, it can guide the overflow of the pot downward, thereby preventing the overflow from directly entering the second fire hole 24 and causing blockage. In this embodiment, the second fire hole 24 is inclined from bottom to top toward the central axis of the fire cover 20. This arrangement can also help to gather the flames, increase the residence time of the high-temperature flue gas between the burner and the pot, and improve the energy efficiency of the burner.

[0058] This embodiment also provides a gas stove, comprising at least one of the aforementioned burners. The gas stove, by providing the aforementioned burners, has fewer parts, a simple structure, and low cost. Optionally, the gas stove may include one, two, three, or more of the aforementioned burners, without specific limitation herein.

[0059] like Figure 1 and Figure 3 As shown, the gas stove further includes a first gas pipe 41, a second gas pipe 42, and a third gas pipe 43. One end of the first gas pipe 41 is connected to a gas source or the main valve of the gas stove, and the other end is in communication with the first channel 13. The first gas pipe 41 is used to supply gas to the first channel 13. One end of the second gas pipe 42 is connected to a gas source or the main valve of the gas stove, and the other end is in communication with the second channel 14. The second gas pipe 42 is used to supply gas to the second channel 14. One end of the third gas pipe 43 is connected to a gas source or the main valve of the gas stove, and the other end is in communication with the third channel 15. The third gas pipe 43 is used to supply gas to the third channel 15.

[0060] Specifically, the gas stove also includes a first air flap 61 and a first nozzle 71. The first air flap 61 is mounted at the entrance of the first passage 13, which is also the entrance of the first ejection tube 112. The first air flap 61 is provided with a first mounting portion and a first ejection hole. The first gas pipe 41 is connected to the first mounting portion of the first air flap 61 via the first nozzle 71. When the first nozzle 71 sprays high-speed gas into the first ejection tube 112, the pressure inside the first ejection tube 112 decreases. Due to the pressure difference, external air enters the first ejection tube 112 and mixes with the gas. Similarly, the gas stove also includes a second air flap 62 and a second nozzle 72. The second air flap 62 is mounted at the entrance of the second passage 14, which is also the entrance of the second ejection tube 113. The second air flap 62 is provided with a second mounting portion and a second ejection hole. The second gas pipe 42 is connected to the second mounting portion of the second air flap 62 via the second nozzle 72. When the second nozzle 72 injects high-speed gas into the second ejector tube 113, the pressure inside the second ejector tube 113 decreases, and outside air, due to the pressure differential, enters the second ejector tube 113 and mixes with the gas. Similarly, the gas stove also includes a third air flap 63 and a third nozzle 73. The third air flap 63 is mounted at the entrance of the third channel 15, that is, at the entrance of the third ejector tube 114. The third air flap 63 is provided with a third mounting portion and a third ejection hole. The third gas pipe 43 is connected to the third mounting portion of the third air flap 63 via the third nozzle 73. When the third nozzle 73 injects high-speed gas into the third ejector tube 114, the pressure inside the third ejector tube 114 decreases, and outside air, due to the pressure differential, enters the third ejector tube 114 and mixes with the gas.

[0061] like Figure 1 As shown, the gas stove also includes a first flow valve 51, a second flow valve 52, and a third flow valve 53. The first flow valve 51 is used to adjust the opening of the first gas pipe 41. The second flow valve 52 is used to adjust the opening of the second gas pipe 42. The third flow valve 53 is used to adjust the opening of the third gas pipe 43. In other words, by controlling the openings of the first flow valve 51, the second flow valve 52, and the third flow valve 53, the amount of gas entering the first channel 13, the second channel 14, and the third channel 15 can be controlled accordingly, thereby controlling the size of the flames in the first fire hole 23, the second fire hole 24, and the annular fire hole 30, respectively, thereby meeting the requirements for different fire types. Optionally, in this embodiment, the first flow valve 51, the second flow valve 52, and the third flow valve 53 can all be solenoid valves, which are electrically connected to the control module of the gas stove.

[0062] In this embodiment, the gas stove further includes an operating assembly 80 configured for user operation. The first flow valve 51, the second flow valve 52, and the third flow valve 53 are all communicatively connected to the operating assembly 80. In this embodiment, the operating assembly 80 is electrically connected to the control module, thereby respectively establishing electrical connections with the first flow valve 51, the second flow valve 52, and the third flow valve 53. In other words, by operating the operating assembly 80, the user can control the opening of the first flow valve 51, the second flow valve 52, and the third flow valve 53, respectively, thereby improving the convenience of gas stove operation.

[0063] In some embodiments, the operating assembly 80 includes a position valve and a position detector. The position valve is connected to an air source, and the first, second, and third air pipes 41, 42, 43 are all connected to the position valve. The position valve is configured for user operation. The position detector is electrically connected to the control module and is capable of detecting the position of the valve disc of the position valve. The detector transmits the detected valve disc information to the control module, which then adjusts the opening of the first, second, and third flow valves 51, 52, 53 accordingly.

[0064] The following provides a way to change the burner fire type by operating the assembly 80:

[0065] When the position valve is rotated to its maximum position, the control module controls the first and second flow valves 51, 52 to their maximum openings, while the third flow valve 53 is adjusted to its minimum opening. At this point, the flames at the first and second fire holes 23, 24 are at their maximum, while the flame at the annular fire hole 30 is at its minimum. This is the high-fire operating state of the burner, and the flame from the annular fire hole 30 primarily serves to stabilize the flame at the second fire hole 24.

[0066] When the position valve is rotated, the openings of the first flow valve 51 and the second flow valve 52 gradually decrease, while the opening of the third flow valve 53 gradually increases. During this process, the flame at the first fire hole 23 gradually decreases to zero, the flame at the second fire hole 24 gradually decreases, and the flame at the annular fire hole 30 gradually increases.

[0067] As the position valve continues to rotate, the first flow valve 51 closes, the second flow valve 52 opens to its minimum opening, and the third flow valve 53 reaches its maximum opening. At this point, there is no flame at the first fire hole 23, the flame at the second fire hole 24 is at its minimum, and the flame at the annular fire hole 30 reaches its maximum. This is the burner's low-fire operating mode, and the flame at the second fire hole 24 stabilizes the flame at the annular fire hole 30.

[0068] When the position valve continues to be rotated, the opening of the second flow valve 52 remains unchanged, and the opening of the third flow valve 53 gradually decreases. At this time, the flame at the second fire hole 24 remains unchanged, and the flame at the annular fire hole 30 is reduced to the minimum. At this time, the burner is in the minimum fire working state.

[0069] Of course, in other embodiments, the operating component 80 can also be an operating panel, which is electrically connected to the control module. The user can select the desired flame state on the operating panel, and the control module adjusts the opening of the first flow valve 51, the second flow valve 52 and the third flow valve 53 accordingly.

[0070] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will, based on the concept of the present invention, vary the specific implementation methods and scope of application, and the contents of this specification should not be construed as limiting the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A burner, characterized in that include: A furnace head assembly (10) is provided with a first channel (13), a second channel (14) and a third channel (15) which are not connected to each other; The fire cover (20) is annular, and a first annular cavity (21) and a second annular cavity (22) are provided in the fire cover (20), and a plurality of first fire holes (23) communicating with the first annular cavity (21) and a plurality of second fire holes (24) communicating with the second annular cavity (22) are provided. The fire cover (20) is placed on the burner head assembly (10), and the first annular cavity (21) is communicated with the first channel (13), and the second annular cavity (22) is communicated with the second channel (14). An annular fire hole (30) is formed between the surface of the fire cover (20) and the side wall of the third channel (15), and the annular fire hole (30) is communicated with the third channel (15).

2. The burner according to claim 1, wherein The fire cover (20) includes an outer ring circumference (25), an upper side surface (26), an inner ring circumference (27) and a lower side surface (28) connected in sequence, the first fire hole (23) is opened on the outer ring circumference (25), the second fire hole (24) is opened on the upper side surface (26), the first annular cavity (21) and the second annular cavity (22) are opened on the lower side surface (28), and the annular fire hole (30) is formed between the inner ring circumference (27) and the side wall of the third channel (15).

3. The burner according to claim 2, characterized in that The burner assembly (10) comprises an annular support surface (124), the outlet of the first channel (13) and the outlet of the second channel (14) extend to the annular support surface (124), and the lower side surface (28) is supported on the annular support surface (124) so that the first channel (13) communicates with the first annular cavity (21), and the second channel (14) communicates with the second annular cavity (22); The outlet end of the third channel (15) is annular and located inside the annular support surface (124). The inner side wall (125) of the third channel (15) is opposite to the inner ring circumference (27) and forms the annular fire hole (30).

4. The burner according to claim 3, characterized in that The inner ring circumferential surface (27) is constructed as a conical surface with a cross section gradually increasing from top to bottom. The upper surface of the inner side wall (125) is higher than the annular support surface (124) and is constructed as a cone with a cross section gradually increasing from top to bottom. The upper surface of the inner side wall (125) is arranged opposite to the inner ring circumferential surface (27).

5. The burner according to claim 2, wherein The upper side surface (26) includes a first surface (261) and a second surface (262) connected to each other, the first surface (261) is horizontally arranged and connects the outer ring surface (25) and the second surface (262), the second surface (262) is connected to the inner ring surface (27), and is constructed as a conical surface with a cross-section gradually decreasing from top to bottom, and the second fire hole (24) is arranged on the second surface (262).

6. The burner according to any one of claims 1 to 5, characterized in that: The burner head assembly (10) comprises: A burner body (11), wherein a first air inlet channel (116), a second air inlet channel (117), and a third air inlet channel (118) which are not connected to each other are provided in the burner body (11); A gas distribution seat (12), wherein a first gas mixing channel (121), a second gas mixing channel (122) and a third gas mixing channel (123) which are not connected to each other are provided in the gas distribution seat (12), the gas distribution seat (12) is covered on the burner head body (11), and the fire cover (20) is covered on the gas distribution seat (12), the first gas mixing channel (121) is connected to the first gas inlet channel (116) and the first annular cavity (21), the second gas mixing channel (122) is connected to the second gas inlet channel (117) and the second annular cavity (22), and the third gas mixing channel (123) is connected to the third gas inlet channel (118) and the annular seam fire hole (30).

7. A gas stove, characterized in that: Comprising at least one burner according to any one of claims 1 to 6.

8. The gas stove according to claim 7, characterized in that: The gas stove also includes: a first air pipe (41) and a first flow valve (51), wherein the first air pipe (41) is in communication with the first channel (13), and the first flow valve (51) is used to adjust the opening of the first air pipe (41); a second air pipe (42) and a second flow valve (52), wherein the second air pipe (42) is in communication with the second channel (14), and the second flow valve (52) is used to adjust the opening of the second air pipe (42); A third air pipe (43) and a third flow valve (53), wherein the third air pipe (43) is communicated with the third channel (15), and the third flow valve (53) is used to adjust the opening of the third air pipe (43).

9. The gas stove according to claim 8, characterized in that: The gas stove further comprises an operating assembly (80), wherein the operating assembly (80) is configured for operation by a user, and the first flow valve (51), the second flow valve (52) and the third flow valve (53) are all communicatively connected to the operating assembly (80).

10. The gas stove according to claim 8, characterized in that: The gas stove also includes: a first air flap (61) and a first nozzle (71), wherein the first air flap (61) is installed at the inlet of the first channel (13), and the first air pipe (41) is connected to the first air flap (61) through the first nozzle (71); a second air flap (62) and a second nozzle (72), wherein the second air flap (62) is installed at the inlet of the second channel (14), and the second air pipe (42) is connected to the second air flap (62) through the second nozzle (72); A third air flap (63) and a third nozzle (73), wherein the third air flap (63) is installed at the inlet of the third channel (15), and the third air pipe (43) is connected to the third air flap (63) through the third nozzle (73).

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