Combustor and gas stove

Abstract

The burner comprises a fire cover structure, the fire cover structure comprises an inner fire cover and an outer fire cover, the outer fire cover comprises an outer fire cover body, an inner ring vent groove and an outer ring gas groove are sequentially formed in the lower side of the outer fire cover body from inside to outside, and at least two fire avoiding areas are arranged on the peripheral side of the outer fire cover body; the inner fire cover comprises an inner fire cover body, the inner fire cover body is arranged in the middle of the outer fire cover body, an inner ring gas groove communicated with the inner ring vent groove is formed in the lower side of the inner fire cover body, and a plurality of outer fire holes communicated with the outer ring gas groove are formed in the lower side of the inner fire cover body. A liquid containing groove located in the outer side of the inner fire cover body is formed in the middle of the outer fire cover body. The furnace end structure comprises a fire distributor and an injection pipe assembly, the fire distributor comprises a fire distributor body arranged on the lower side of the fire cover structure, and an inner ring fuel gas channel, a first outer ring fuel gas mixing cavity and a second outer ring fuel gas mixing cavity are sequentially formed in the fire distributor body from inside to outside.

Description

Technical Field

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

[0002] In order to meet the needs of high-power combustion, flame uniformity and power regulation, the existing stove burners adopt split, double-ring concentric structures for the outer ring fire cover and the inner ring fire cover. In order to supplement the secondary air of the middle ring fire, the usual method is to reserve a certain secondary air channel between the outer ring fire cover and the inner ring fire cover so that the secondary air can enter the channel through the bottom of the outer ring fire cover to supplement the secondary air inside the middle ring fire or the outer ring fire. The disadvantage of the prior art is that the liquid overflowing from the pot will accumulate in the secondary air channel, making the burner difficult to clean.

[0003] Existing burners generally use an ejector tube to mix gas and air to improve combustion efficiency. However, since the length of the ejector tube is limited by the overall volume of the burner and cannot be long enough, it is easy to cause uneven mixing between air and gas, resulting in reduced combustion efficiency.

[0004] Therefore, a burner is urgently needed to solve the above problems. Summary of the invention

[0005] The present invention aims to solve one of the problems existing in the prior art to at least a certain extent. To this end, the present invention provides a burner having the advantages of being easy to clean and having high combustion efficiency.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A burner, comprising:

[0008] A fire cover structure, comprising an inner fire cover and an outer fire cover, wherein the outer fire cover comprises an outer fire cover body, an inner ring ventilation groove and an outer ring gas groove are sequentially provided on the lower side of the outer fire cover body from the inside to the outside, at least two fire avoidance areas are arranged on the circumference of the outer fire cover body, and a plurality of outer fire holes connected with the outer ring gas groove are provided between two adjacent fire avoidance areas, the inner fire cover comprises an inner fire cover body, the inner fire cover body is arranged in the middle part of the outer fire cover body, an inner ring gas groove connected with the inner ring ventilation groove is provided on the lower side of the inner fire cover body, a plurality of inner fire holes corresponding to the inner ring gas groove are provided on the circumference of the inner fire cover body, the inner fire holes are arranged higher than the middle part of the inner fire cover body, a liquid storage groove located on the outside of the inner fire cover body is provided in the middle part of the outer fire cover body, a liquid outlet groove connected with the liquid storage groove and the outside of the fire cover structure is provided on the outer side of the outer fire cover body, and the outlet of the liquid outlet groove is located on the upper side of one of the fire avoidance areas;

[0009] A stove head structure includes an ignition divider and an ejector tube assembly, wherein the ignition divider includes an ignition divider body arranged on the lower side of the fire cover structure, and an inner ring gas channel, a first outer ring gas mixing chamber and a second outer ring gas mixing chamber are sequentially opened on the ignition divider body from the inside to the outside, and the ejector tube assembly includes an outer ring ejector tube and an inner ring ejector tube, the outer ring ejector tube is connected to the first outer ring gas mixing chamber, the first outer ring gas mixing chamber is connected to the second outer ring gas mixing chamber, the outer ring gas groove cover is arranged on the first outer ring gas mixing chamber and the second outer ring gas mixing chamber, the second outer ring gas mixing chamber is connected to the outer fire hole, the inner ring ejector tube is connected to the inner ring gas channel, and the inner ring gas channel is connected to the inner ring ventilation groove.

[0010] Optionally, it also includes a heat insulation ring, which is arranged between the outer fire cover body and the fire divider body.

[0011] Optionally, it also includes an ignition needle, a first ignition needle mounting hole is opened on the outer fire cover body, a shielding portion is provided on the upper side of the inner fire cover body, the ignition needle is installed in the first ignition needle mounting hole, the shielding portion is located above the ignition needle, and the vertical projection of the ignition needle is located within the vertical projection of the shielding portion, and an ignition hole connected to the inner ring gas groove is provided on the peripheral side of the inner fire cover body, the ignition hole is located below the shielding portion and is arranged corresponding to the ignition nozzle of the ignition needle.

[0012] Optionally, a first avoidance groove is recessed inwardly on the circumferential side of the inner ignition cover body, the ignition hole is formed on the groove wall of the first avoidance groove, and the ignition nozzle of the ignition needle extends into the first avoidance groove.

[0013] Optionally, a first outer ring fire transfer hole is further provided on the circumferential side of the outer fire cover body, the inner end of the first outer ring fire transfer hole is connected to the liquid storage tank and is located on the outside of the ignition needle, the outer end of the first outer ring fire transfer hole is connected to the outside of the fire cover structure and is located in one of the fire avoidance areas, and a second outer ring fire transfer hole connected to the outer ring gas groove is provided on the inner wall of the first outer ring fire transfer hole.

[0014] Optionally, the fire avoidance area where the outer end of the first outer ring fire transmission hole is located and the fire avoidance area where the outlet of the liquid outlet groove is located are two different fire avoidance areas.

[0015] Optionally, a reflux chamber located below the first outer ring gas mixing chamber is further provided on the ignition divider body, and the outer ring ejector tube is connected with the first outer ring gas mixing chamber through the reflux chamber, and the bottom surface of the reflux chamber is coplanar with the bottom surface of the outer ring ejector chamber of the outer ring ejector tube.

[0016] Optionally, a guide slope is further provided between the reflux cavity and the first outer ring gas mixing cavity, and the guide slope is inclined from bottom to top to form an angle β with a horizontal plane, 50°≤β≤70°.

[0017] Optionally, it also includes a liquid receiving pan, which is sleeved on the circumferential side of the ignition divider body, and a second avoidance groove recessed inward is provided on the outer circumferential side of the ignition divider body, the outer fire cover body is located on the upper side of the second avoidance groove, and a first connecting hole is provided on the lower side of the second avoidance groove. A first connecting portion is provided on the inner side of the liquid receiving pan, and the first connecting portion extends into the second avoidance groove. A second connecting hole corresponding to the first connecting hole is provided on the first connecting portion, and the liquid receiving pan and the ignition divider body are connected by screws passing through the first connecting hole and the second connecting hole.

[0018] Another aspect of the present invention provides a gas stove comprising the burner mentioned above.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] The burner provided by the present invention, on the one hand, by arranging at least two fire avoidance areas on the circumferential side of the outer fire cover body, secondary air can enter the inner fire cover through the area to help the inner ring fire burn and ensure the combustion efficiency of the inner ring fire, thereby solving the problem of arranging the secondary air intake channel of the inner ring fire between the inner fire cover and the outer fire cover in the prior art, which can avoid overflowing liquid from overflowing into the secondary air channel between the inner fire cover and the outer fire cover, causing the problem of the burner being difficult to clean. On the other hand, by arranging a liquid storage tank and a liquid outlet tank connected to the liquid storage tank on the upper side of the outer fire cover body, the overflow during cooking can be first collected in the liquid storage tank and then flow out of the fire cover structure through the liquid outlet tank, thereby making the burner easy to clean, and the liquid outlet tank is arranged in the fire avoidance area to avoid overflowing liquid from flowing into the outer fire hole. On the other hand, by arranging a first outer ring gas mixing chamber and a second outer ring gas mixing chamber which are interconnected on the ignition distributor body, the gas and air mixture of the outer ring fire can be mixed in the first outer ring gas mixing chamber successively to improve the mixing uniformity of the gas and air, thereby improving the combustion efficiency of the outer ring fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional assembly structure of the fire cover structure, the burner head structure and the ignition needle of the burner provided by the specific embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the fire cover structure of the burner provided by a specific embodiment of the present invention;

[0023] Figure 3 yes Figure 2 Exploded diagram of

[0024] Figure 4 yes Figure 2 A top view of

[0025] Figure 5 yes Figure 4 Sectional view at AA in the middle;

[0026] Figure 6 It is a schematic diagram of the assembly of the fire cover structure and the ignition needle of the burner provided by a specific embodiment of the present invention;

[0027] Figure 7 It is a schematic diagram of the assembly of the burner head structure and the ignition needle of the burner provided by the specific embodiment of the present invention;

[0028] Figure 8 yes Figure 7 A top view of

[0029] Fig. 9 yes Figure 8 Sectional view at the middle BB;

[0030] Fig.10 yes Figure 8 Sectional view at CC;

[0031] Fig.11 It is a schematic diagram of the assembly of a burner and a fire cover structure provided by a specific embodiment of the present invention;

[0032] Fig.12 yes Fig.11 A top view of

[0033] Fig.13 yes Fig.12 Sectional view at DD in the middle;

[0034] Fig.14 yes Fig.13 Enlarged view of point E in the middle;

[0035] Fig.15 It is a schematic diagram of the three-dimensional structure of a burner provided in a specific embodiment of the present invention.

[0036] In the figure:

[0037] 1. Fire cover structure; 11. External fire cover; 111. External fire cover body; 1111. Flanging; 112. External fire hole; 113. Liquid storage tank; 114. First ignition needle mounting hole; 115. Second external ring fire hole; 116. Liquid outlet tank; 117. First external ring fire hole; 12. Internal fire cover; 121. Internal fire cover body; 122. Internal fire hole; 123. First avoidance groove; 124. Ignition hole; 125. Shielding part; 101. Internal ring ventilation groove; 102. External ring gas groove; 103. Internal ring gas groove; 10. Fire avoidance area;

[0038] 2. Ignition needle;

[0039] 3. Burner structure; 31. Diverter; 311. Diverter body; 312. Second avoidance groove; 313. First connection hole; 314. Guide slope; 315. Reflux cavity; 316. Guide arc surface; 301. First outer ring gas mixing cavity; 302. Second outer ring gas mixing cavity; 303. Inner ring gas channel; 32. Ejector tube assembly; 321. Inner ring ejector tube; 322. Outer ring ejector tube; 3221. Outer ring ejector cavity;

[0040] 4. liquid receiving tray; 41. second connecting hole; 42. card slot;

[0041] 5. Pot support; 51. Block;

[0042] 6. Thermal insulation ring;

[0043] 7. Stove. DETAILED DESCRIPTION

[0044] The following examples illustrate the present invention, but the present invention is not limited to these examples. Modifications to the specific embodiments of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed by the present invention.

[0045] Please refer to Figure 1-Figure 15The present invention provides a burner, including a fire cover structure 1 and a burner head structure 3. The fire cover structure 1 includes an inner fire cover 12 and an outer fire cover 11, the outer fire cover 11 includes an outer fire cover body 111, the lower side of the outer fire cover body 111 is provided with an inner ring ventilation groove 101 and an outer ring gas groove 102 in sequence from the inside to the outside, at least two fire avoidance areas 10 are provided on the peripheral side of the outer fire cover body 111, and a plurality of outer fire holes 112 connected to the outer ring gas groove 102 are provided between two adjacent fire avoidance areas 10, the inner fire cover 12 includes an inner fire cover body 121, the inner fire cover body 121 is arranged in the middle of the outer fire cover body 111, and the inner fire cover body 121 is provided with a plurality of outer fire holes 112 connected to the outer ring gas groove 102. An inner ring gas groove 103 connected to the inner ring ventilation groove 101 is opened on the lower side, and a plurality of inner fire holes 122 corresponding to the inner ring gas groove 103 are opened on the circumferential side of the inner fire cover body 121, and the inner fire holes 122 are arranged higher than the middle part of the inner fire cover body 121, and a liquid storing groove 113 located on the outside of the inner fire cover body 121 is arranged in the middle part of the outer fire cover body 111, and a liquid outlet groove 116 connecting the liquid storing groove 113 and the outside of the fire cover structure 1 is opened on the outer side of the outer fire cover body 111, and the outlet of the liquid outlet groove 116 is located on the upper side of one of the fire avoidance areas 10. The burner head structure 3 includes an ignition distributor 31 and an ejector tube assembly 32. The ignition distributor 31 includes an ignition distributor body 311 arranged at the lower side of the fire cover structure 1. The ignition distributor body 311 is provided with an inner ring gas channel 303, a first outer ring gas mixing chamber 301 and a second outer ring gas mixing chamber 302 in sequence from the inside to the outside. The ejector tube assembly 32 includes an outer ring ejector tube 322 and an inner ring ejector tube 321. The outer ring ejector tube 322 is connected to the first outer ring gas mixing chamber 301, and the first outer ring gas mixing chamber 301 is connected to the second outer ring gas mixing chamber 302. The outer ring gas groove 102 is covered on the first outer ring gas mixing chamber 301. On the mixing chamber 301 and the second outer ring gas mixing chamber 302, the second outer ring gas mixing chamber 302 is connected to the outer fire hole 112, the inner ring ejector pipe 321 is connected to the inner ring gas channel 303, and the inner ring gas channel 303 is connected to the inner ring ventilation groove 101. Specifically, the gas and air mixture in the outer ring ejector pipe 322 is preliminarily mixed in the outer ring ejector pipe 322, and then enters the first outer ring gas mixing chamber 301 upward in the vertical direction, spirally flows in the first outer ring gas mixing chamber 301 to the second outer ring gas mixing chamber 302, and then flows out from the outer fire hole 112 for combustion.

[0046] The burner provided by the present invention, on the one hand, by setting at least two fire avoidance areas 10 on the circumferential side of the outer fire cover body 111, secondary air can enter the inner fire cover 12 through the area to help the inner ring fire burn and ensure the combustion efficiency of the inner ring fire, which solves the problem of setting the secondary air intake channel of the inner ring fire between the inner fire cover 12 and the outer fire cover 11 in the prior art, and can avoid overflowing liquid from overflowing into the secondary air channel between the inner fire cover 12 and the outer fire cover 11, causing the problem of the burner being difficult to clean. On the other hand, by setting a liquid storage tank 113 and a liquid outlet tank 116 connected to the liquid storage tank 113 on the upper side of the outer fire cover body 111, the overflow during cooking can be first collected in the liquid storage tank 113, and then flow out of the fire cover structure 1 through the liquid outlet tank 116, thereby making the burner easy to clean, and the liquid outlet tank 116 is set at the fire avoidance area 10 to avoid overflowing liquid from flowing into the outer fire hole 112. On the other hand, by arranging the first outer ring gas mixing chamber 301 and the second outer ring gas mixing chamber 302 which are interconnected on the ignition distributor body 311, the gas and air mixture of the outer ring fire can be mixed in the first outer ring gas mixing chamber 301 successively to improve the mixing uniformity of the gas and air, thereby improving the combustion efficiency of the outer ring fire.

[0047] Optionally, it also includes an insulation ring 6, which is arranged between the outer fire cover body 111 and the fire divider body 311, so as to reduce the heat transferred from the fire cover structure 1 to the burner structure 3, and then conducted to the bottom shell of the stove and other positions, thereby reducing the energy efficiency loss caused by the gas stove.

[0048] Optionally, an ignition needle 2 is further included, a first ignition needle mounting hole 114 is provided on the outer fire cover body 111, a shielding portion 125 is provided on the upper side of the inner fire cover body 121, the ignition needle 2 is installed in the first ignition needle mounting hole 114, the shielding portion 125 is located above the ignition needle 2, and the vertical projection of the ignition needle 2 is located within the vertical projection of the shielding portion 125, and the circumference of the inner fire cover body 121 is provided with an ignition hole 124 connected to the inner ring gas groove 103, the ignition hole 124 is located below the shielding portion 125 and is provided corresponding to the ignition nozzle of the ignition needle 2. By providing the shielding portion 125, the ignition needle 2 is shielded to prevent overflow from flowing to the ignition needle 2 during cooking.

[0049] Optionally, a first avoidance groove 123 is recessed inwardly on the circumferential side of the inner fire cover body 121, and the ignition hole 124 is opened on the groove wall of the first avoidance groove 123, and the ignition nozzle of the ignition needle 2 extends into the first avoidance groove 123, thereby improving the shielding effect of the ignition nozzle of the ignition needle 2, and further ensuring that overflow during the cooking process will not drip onto the ignition nozzle of the ignition needle 2.

[0050] Optionally, a first outer ring fire transfer hole 117 is further provided on the peripheral side of the outer fire cover body 111, the inner end of the first outer ring fire transfer hole 117 is connected to the liquid storage tank 113 and is located on the outside of the ignition needle 2, the outer end of the first outer ring fire transfer hole 117 is connected to the outside of the fire cover structure 1 and is located in one of the fire avoidance areas 10, and a second outer ring fire transfer hole 115 connected to the outer ring gas tank 102 is provided on the inner wall of the first outer ring fire transfer hole 117, so as to avoid the outer fire hole 112 and open the first outer ring fire transfer hole 117, which has a simple and compact structure and a good fire transfer effect.

[0051] Optionally, the inner end of the first outer ring fire transfer hole 117 is arranged higher than the bottom surface of the liquid storage tank 113 to prevent the overflow liquid accumulated in the liquid storage tank 113 from flowing to the first outer ring fire transfer hole 117 .

[0052] Optionally, the second outer ring fire transfer hole 115 is opened on the upper part of the first outer ring fire transfer hole 117. When too much overflow liquid in the liquid storage tank 113 flows to the first outer ring fire transfer hole 117, the overflow liquid can be prevented from overflowing into the second outer ring fire transfer hole 115 as much as possible.

[0053] Optionally, the first outer ring fire transfer holes 117 are arranged to be inclined downward from the inside to the outside, and the first outer ring fire transfer holes 117 can guide the overflow to the outside of the fire cover structure 1.

[0054] Optionally, the fire avoidance area 10 where the outer end of the first outer ring fire transfer hole 117 is located and the fire avoidance area 10 where the outlet of the liquid outlet groove 116 is located are two different fire avoidance areas 10 to prevent overflow from flowing out through the outlet of the liquid outlet groove 116 to flow to the first outer ring fire transfer hole 117.

[0055] Optionally, the inner fire cover 12 and the outer fire cover 11 are separately arranged to facilitate demolding of parts. A flange 1111 is arranged in the middle of the outer fire cover body 111. The flange 1111 is located on the peripheral side of the inner ring ventilation groove 101 and protrudes from the bottom surface of the liquid storage tank 113. The bottom side of the inner fire cover body 121 is abutted or connected to the flange 1111. By setting the flange 1111, the overflow in the liquid storage tank 113 will not flow out of the inner ring ventilation groove 101.

[0056] Optionally, a reflux chamber 315 located below the first outer ring gas mixing chamber 301 is further provided on the ignition divider body 311, and the outer ring ejector tube 322 is connected to the first outer ring gas mixing chamber 301 through the reflux chamber 315. The bottom surface of the reflux chamber 315 is coplanar with the bottom surface of the outer ring ejector chamber body 3221 of the outer ring ejector tube 322. By setting the reflux chamber 315, the mixture of gas and air is initially mixed in the outer ring ejector chamber and then collides with the inner wall of the reflux chamber 315, thereby slowing down the flow rate of the gas and air, further mixing the gas and air, and then flowing into the first outer ring gas mixing chamber 301 for further mixing, thereby improving the mixing uniformity of the gas and air.

[0057] Optionally, a guide slope 314 is further provided between the reflux chamber 315 and the first outer ring gas mixing chamber 301, and the guide slope 314 is inclined from bottom to top to form an angle β with the horizontal plane, 50°≤β≤70°, so as to further reduce the flow rate of the mixture of gas and air and improve the mixing uniformity of air and gas.

[0058] Optionally, the angle β between the guide slope 314 and the horizontal plane is 60°.

[0059] Optionally, a guide arc surface 316 is further provided between the guide slope surface 314 and the first outer ring gas mixing chamber 301, so that the mixture of gas and air can flow smoothly into the first outer ring gas mixing chamber 301 via the guide arc surface 316, and then the mixture of gas and air can flow spirally upward in the first outer ring gas mixing chamber 301 and the second outer ring gas mixing chamber 302.

[0060] Optionally, it also includes a liquid receiving tray 4, which is sleeved on the peripheral side of the fire divider body 311, and the outer peripheral side of the fire divider body 311 is provided with a second avoidance groove 312 that is recessed inward, the outer fire cover body 111 is located on the upper side of the second avoidance groove 312, and the lower side of the second avoidance groove 312 is provided with a first connecting hole 313, and the inner side of the liquid receiving tray 4 is provided with a first connecting portion, which extends into the second avoidance groove 312, and the first connecting portion is provided with a second connecting hole 41 corresponding to the first connecting hole 313, and the liquid receiving tray 4 and the fire divider body 311 are connected by screws passing through the first connecting hole 313 and the second connecting hole 41. In this way, the screw can be located in the second avoidance groove 312, and the outer fire cover body 111 blocks the screw to prevent overflow during cooking from flowing into the screw and causing the screw to rust.

[0061] Optionally, a second ignition needle mounting hole is further provided on the ignition distributor body 311 , the bottom of the ignition needle 2 is mounted in the second ignition needle mounting hole, and the upper part of the ignition needle 2 is mounted in the first ignition needle mounting hole 114 .

[0062] Another aspect of the present invention provides a gas stove comprising the burner mentioned above.

[0063] Optionally, a stove top 7 and a pot support 5 are further included. A burner mounting hole is provided on the stove top 7. The burner is installed in the burner mounting hole and extends from the stove top 7. A slot 42 is provided on the upper side of the liquid receiving pan 4. A block 51 is provided at the bottom of the pot support 5. The block 51 is clamped in the slot 42, thereby limiting the position of the pot support 5.

[0064] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A burner, characterized in that: include: A fire cover structure (1) comprises an inner fire cover (12) and an outer fire cover (11), wherein the outer fire cover (11) comprises an outer fire cover body (111), wherein the lower side of the outer fire cover body (111) is provided with an inner ring ventilation groove (101) and an outer ring gas groove (102) in sequence from the inside to the outside, wherein at least two fire avoidance areas (10) are provided on the circumference of the outer fire cover body (111), wherein a plurality of outer fire holes (112) connected to the outer ring gas groove (102) are provided between two adjacent fire avoidance areas (10), wherein the inner fire cover (12) comprises an inner fire cover body (121), wherein the inner fire cover body (121) is provided in the middle of the outer fire cover body (111), wherein the inner fire cover body (121) is provided at ... An inner ring gas groove (103) connected to the inner ring ventilation groove (101) is provided on the lower side, a plurality of inner fire holes (122) corresponding to the inner ring gas groove (103) are provided on the circumference of the inner fire cover body (121), the inner fire holes (122) are arranged higher than the middle part of the inner fire cover body (111), a liquid storage groove (113) located outside the inner fire cover body (121) is provided in the middle part of the outer fire cover body (111), a liquid outlet groove (116) connected to the liquid storage groove (113) and the outside of the fire cover structure (1) is provided on the outer side of the outer fire cover body (111), and the outlet of the liquid outlet groove (116) is located on the upper side of one of the fire avoidance areas (10); A burner head structure (3) comprises an ignition divider (31) and an ejector tube assembly (32), wherein the ignition divider (31) comprises an ignition divider body (311) arranged at the lower side of the fire cover structure (1), wherein the ignition divider body (311) is provided with an inner ring gas channel (303), a first outer ring gas mixing chamber (301) and a second outer ring gas mixing chamber (302) in sequence from the inside to the outside, and the ejector tube assembly (32) comprises an outer ring ejector tube (322) and an inner ring ejector tube (321), wherein the outer ring ejector tube (322) and the first outer ring gas mixing chamber (301) are connected to each other. The first outer ring gas mixing chamber (301) is connected to the second outer ring gas mixing chamber (302), the outer ring gas groove (102) is covered on the first outer ring gas mixing chamber (301) and the second outer ring gas mixing chamber (302), the second outer ring gas mixing chamber (302) is connected to the outer fire hole (112), the inner ring ejector pipe (321) is connected to the inner ring gas channel (303), and the inner ring gas channel (303) is connected to the inner ring ventilation groove (101).

2. The burner according to claim 1, characterized in that It also includes a heat insulation ring (6), which is arranged between the outer fire cover body (11) and the fire distributor body (311).

3. The burner according to claim 1, characterized in that It also includes an ignition needle (2), a first ignition needle mounting hole (114) is opened on the outer fire cover body (111), a shielding portion (125) is arranged on the upper side of the inner fire cover body (121), the ignition needle (2) is installed in the first ignition needle mounting hole (114), the shielding portion (125) is located above the ignition needle (2), and the vertical projection of the ignition needle (2) is located within the vertical projection of the shielding portion (125), and the circumferential side of the inner fire cover body (121) is provided with an ignition hole (124) connected to the inner ring gas groove (103), the ignition hole (124) is located below the shielding portion (125) and is arranged corresponding to the ignition nozzle of the ignition needle (2).

4. The burner according to claim 3, characterized in that A first avoidance groove (123) is provided inwardly on the peripheral side of the inner ignition cover body (121); the ignition hole (124) is provided on the groove wall of the first avoidance groove (123); and the ignition nozzle of the ignition needle (2) extends into the first avoidance groove (123).

5. The burner according to claim 3, characterized in that A first outer ring fire transfer hole (117) is also provided on the circumferential side of the outer fire cover body (111); the inner end of the first outer ring fire transfer hole (117) is connected to the liquid storage tank (113) and is located on the outside of the ignition needle (2); the outer end of the first outer ring fire transfer hole (117) is connected to the outside of the fire cover structure (1) and is located in one of the fire avoidance areas (10); and a second outer ring fire transfer hole (115) connected to the outer ring gas tank (102) is provided on the inner wall of the first outer ring fire transfer hole (117).

6. The burner according to claim 5, characterized in that The fire avoidance area (10) where the outer end of the first outer ring fire transmission hole (117) is located and the fire avoidance area (10) where the outlet of the liquid outlet groove (116) is located are two different fire avoidance areas (10).

7. The burner according to any one of claims 1 to 6, characterized in that: The igniter body (311) is also provided with a reflux chamber (315) located below the first outer ring gas mixing chamber (301); the outer ring ejector tube (322) is connected to the first outer ring gas mixing chamber (301) through the reflux chamber (315); the bottom surface of the reflux chamber (315) is coplanar with the bottom surface of the outer ring ejector chamber (3221) of the outer ring ejector tube (322).

8. The burner according to claim 7, characterized in that A guide slope (314) is also provided between the reflux chamber (315) and the first outer ring gas mixing chamber (301), and the guide slope (314) is inclined from bottom to top to form an angle β with the horizontal plane, 50°≤β≤70°.

9. The burner according to claim 1, characterized in that It also includes a liquid receiving tray (4), which is sleeved on the circumferential side of the ignition divider body (311), and a second avoidance groove (312) recessed inwardly is provided on the outer circumferential side of the ignition divider body (311), and the outer fire cover body (111) is located on the upper side of the second avoidance groove (312), and a first connecting hole (313) is provided on the lower side of the second avoidance groove (312), and a first connecting portion is provided on the inner side of the liquid receiving tray (4), and the first connecting portion extends into the second avoidance groove (312), and a second connecting hole (41) corresponding to the first connecting hole (313) is provided on the first connecting portion, and the liquid receiving tray (4) and the ignition divider body (311) are connected by screws passing through the first connecting hole (313) and the second connecting hole (41).

10. A gas stove, characterized in that: A burner comprising the burner according to any one of claims 1 to 9.

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