Outer fire cover, combustor and gas stove

Abstract

The invention discloses an outer fire cover, a combustor and a gas stove. The outer fire cover comprises an outer fire cover body, a first secondary air channel and a first inner ring gas channel which penetrate through the upper side and the lower side of the outer fire cover body are formed in the middle of the outer fire cover body, and an air outlet of the first secondary air channel is formed in the upper side of the outer fire cover body and located in the outer side of the first inner ring gas channel. An air inlet of the first secondary air channel is formed in the lower side of the outer fire cover body. The outer fire cover is simple and compact in structure, secondary air can be conveniently provided for a combustor, and the combustion efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and particularly to an outer burner cap, a burner and a gas stove. Background Art

[0002] In order to meet the requirements of high-firepower combustion, flame uniformity and firepower adjustment of existing cooktop burners, the outer burner cap and the inner burner cap adopt a split and double-ring concentric structure. In order to supplement the secondary air of the inner ring fire, the common method is to reserve a secondary air passage between the outer burner cap and the inner burner cap, and the secondary air enters the secondary air passage through the air inlet opened at the bottom of the outer burner cap for supplementing the secondary air inside the inner ring fire or the outer ring fire.

[0003] The height from the existing burner cap to the glass panel is more than 40 mm, and the height of the pot support is more than 62 mm. The overall effect is relatively prominent, affecting the aesthetics of the gas stove and the style matching of the whole machine and the home.

[0004] Therefore, there is an urgent need for an outer burner cap, a burner and a gas stove to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve at least one of the problems existing in the related art to a certain extent. For this purpose, the present invention provides an outer burner cap with a simple and compact structure, which is beneficial to providing secondary air for the burner and improving the combustion efficiency.

[0006] The above object is achieved by the following technical solutions:

[0007] An outer burner cap includes an outer burner cap body. A first secondary air passage and a first inner ring gas passage that penetrate the upper and lower sides of the outer burner cap body are provided in the middle of the outer burner cap body. The air outlet of the first secondary air passage is arranged on the upper side of the outer burner cap body and is located outside the first inner ring gas passage, and the air inlet of the first secondary air passage is arranged on the lower side of the outer burner cap body.

[0008] Optionally, the first secondary air passage includes:

[0009] An air inlet part, arranged in the vertical direction;

[0010] A first air transmission part, arranged in the horizontal direction, and the inner end of the first air transmission part is communicated with the air inlet part;

[0011] A second air transmission part, arranged in a horizontal ring shape on the outer peripheral side of the first inner ring gas passage, and the outer end of the first air transmission part is communicated with the second air transmission part;

[0012] An air outlet hole, opened on the upper side of the second air transmission part and communicated with the second air transmission part.

[0013] Optionally, the air inlet part is arranged in the middle of the outer fire cap body, the first inner ring gas channel is arranged on the outer peripheral side of the air inlet part, and the first gas transmission part penetrates through the first inner ring gas channel to connect the first gas transmission part and the second gas transmission part.

[0014] Optionally, a plurality of the first gas transmission parts are provided, and the plurality of the first gas transmission parts are evenly distributed on the outer peripheral side of the air inlet part, and the first inner ring gas channel is formed between two adjacent ones of the first gas transmission parts.

[0015] Optionally, a plurality of the air outlet holes are provided, and the plurality of the air outlet holes are evenly distributed on the upper side of the second gas transmission part.

[0016] Optionally, a first liquid storage groove located on the outer peripheral side of the first inner ring gas channel is arranged on the upper side of the outer fire cap body, a liquid blocking step protruding upward is arranged on the upper side of the inner end part of the first liquid storage groove, and the air outlet holes are formed in the liquid blocking step.

[0017] Optionally, a fire transmission hole and a first liquid guide groove are formed in the outer side wall of the first liquid storage groove, the fire transmission hole and the first liquid guide groove both communicate the first liquid storage groove with the outside of the outer fire cap body, the bottom end of the fire transmission hole is higher than the bottom end of the first liquid guide groove, at least two fire avoidance areas are arranged on the outer peripheral side of the outer fire cap body, a plurality of outer fire holes are arranged between two adjacent ones of the fire avoidance areas, the fire transmission hole and the first liquid guide groove are arranged at different fire avoidance areas, a first outer ring gas channel with an opening facing downward is formed on the lower side of the outer fire cap body, and the first outer ring gas channel is communicated with the outer fire holes.

[0018] Optionally, it further includes a shielding part, the shielding part is installed on the outer fire cap body and is located above the air outlet of the first secondary air channel, an air outlet gap is formed between the inner side of the shielding part and the outer fire cap body, and the air outlet gap communicates the air outlet of the first secondary air channel with the upper part of the shielding part.

[0019] Optionally, an assembly convex ring located on the outer peripheral side of the first inner ring gas channel is arranged on the upper side of the outer fire cap body, the assembly convex ring protrudes upward towards the outer fire cap body, the shielding part includes a first shielding part and a second shielding part, the first shielding part is arranged horizontally above the air outlet of the first secondary air channel, the second shielding part is connected to the outer side of the first shielding part and extends in the vertically downward direction, the lower end of the second shielding part is connected to or abuts against the upper side surface of the outer fire cap body, and the air outlet gap is formed between the inner end of the first shielding part and the assembly convex ring.

[0020] Optionally, the first shielding part is inclined downward from inside to outside.

[0021] On the other hand, the present invention provides a burner, including an inner fire cover and the above-mentioned outer fire cover. The inner fire cover includes an inner fire cover body installed in the middle of the outer fire cover body. A second inner ring gas channel communicating with the first inner ring gas channel is provided on the lower side of the inner fire cover body. Inner fire holes communicating with the second inner ring gas channel are provided on the circumferential side of the inner fire cover body. A brim is provided on the circumferential side of the upper end of the inner fire cover body, and the brim extends outward from above the air outlet gap to above the shielding member from inside to outside.

[0022] Optionally, a second liquid storage tank is further provided on the upper side of the inner fire cover body. A second liquid guide groove is provided on the outer side wall of the second liquid storage tank. The second liquid guide groove communicates the second liquid storage tank with the outside of the inner fire cover body, and the outer end of the second liquid storage tank is located above the shielding member.

[0023] On yet another aspect, the present invention provides a gas stove including the above-mentioned burner.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] For the outer fire cover provided by the present invention, by providing a first inner ring gas channel and a first secondary air channel in the middle of the outer fire cover body, and making the opening of the first secondary air channel be on the upper side of the outer fire cover body and located outside the first inner ring gas channel, and the air inlet of the first secondary air channel be on the lower side of the outer fire cover body, so that the first inner ring gas channel can provide the gas and secondary air required for the inner ring fire combustion for the inner fire cover installed on the upper side in the middle of the outer fire cover. Since the first secondary air inlet is opened on the lower side of the outer fire cover body, the secondary air can flow upward from the bottom of the burner to supplement the secondary air required for the inner ring fire combustion, thus solving the problems in the prior art that by providing a secondary air channel between the inner ring fire and the outer ring fire and opening a secondary air hole communicating with the secondary air channel on the bottom side of the outer fire cover, the overflow liquid during cooking drips into the secondary air channel, making it difficult to clean the burner and the burner being too high. In addition, since the air outlet of the first secondary air channel is located outside the first inner ring gas channel, the secondary air flowing out through the first secondary air channel can be used for both the inner ring fire combustion and the outer ring fire combustion, which can improve the combustion efficiency of both the outer ring fire and the inner ring fire at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of the outer fire cover provided by a specific embodiment of the present invention;

[0027] Figure 2 is Figure 1 the top view of

[0028] Figure 3 is Figure 2 The sectional view taken along line B-B in

[0029] Figure 4 is the three-dimensional assembly structure diagram of the outer fire cover and the inner fire cover of the burner provided by a specific embodiment of the present invention;

[0030] Figure 5 is Figure 4 the top view of

[0031] Figure 6 is Figure 5 The sectional view taken along line A-A in

[0032] Figure 7 is Figure 6 the enlarged view at C in

[0033] Figure 8 is Figure 4 the three-dimensional structure diagram after removing the shielding member in

[0034] Figure 9 is the three-dimensional structure diagram of the burner provided by a specific embodiment of the present invention;

[0035] Figure 10 of Figure 9 exploded view.

[0036] In the figure:

[0037] 10. First liquid storage tank; 11. Outer fire cover body; 12. Outer fire holes; 13. First primary and secondary air channels; 131. Intake part; 132. Second air transmission part; 133. Air outlet holes; 134. First air transmission part; 14. First outer ring gas channel; 15. First inner ring gas channel; 16. Flame transfer holes; 17. First liquid guide groove; 18. Fire avoidance area; 100. Air outlet gap; 101. Liquid retaining step; 102. Assembly convex ring;

[0038] 2. Shielding member; 21. First shielding part; 22. Second shielding part;

[0039] 3. Inner fire cover; 31. Inner fire cover body; 32. Inner fire holes; 33. Second liquid storage tank; 34. Second liquid guide groove; 35. Cap brim; 36. Third shielding part; 37. Second inner ring gas channel;

[0040] 4. Burner head; 41. Burner head body; 42. Second primary and secondary air channels; 43. Third inner ring gas channel; 44. Second outer ring gas channel;

[0041] 5. Ignition needle. Specific embodiments

[0042] The following embodiments are used to illustrate the present invention, but the present invention is not limited by these embodiments. Modifying the specific implementation manner of the present invention or equivalently replacing some technical features without departing from the spirit of the present invention's solution shall be covered within the scope of the technical solution claimed by the present invention.

[0043] Please refer to Figures 1 - 10 , the present invention provides an outer fire cap, which includes an outer fire cap body 11. A first secondary air passage 13 and a first inner ring gas passage 15 that penetrate the upper and lower sides of the outer fire cap body 11 are provided in the middle of the outer fire cap body 11. The air outlet of the first secondary air passage 13 is arranged on the upper side of the outer fire cap body 11 and is located outside the first inner ring gas passage 15, and the air inlet of the first secondary air passage 13 is arranged on the lower side of the outer fire cap body 11.

[0044] The outer fire cap provided by the present invention is provided with a first inner ring gas passage 15 and a first secondary air passage 13 in the middle of the outer fire cap body 11, and the opening of the first secondary air passage 13 is arranged on the upper side of the outer fire cap body 11 and is located outside the first inner ring gas passage 15, and the air inlet of the first secondary air passage 13 is arranged on the lower side of the outer fire cap body 11, so that the first inner ring gas passage 15 can provide the gas and secondary air required for the inner ring fire combustion for the inner fire cap 3 installed on the upper side of the middle of the outer fire cap. Since the first secondary air inlet is opened on the lower side of the outer fire cap body 11, the secondary air can flow upward from the bottom of the burner to supplement the secondary air required for the inner ring fire combustion, thereby solving the problems in the prior art that a secondary air passage is arranged between the inner ring fire and the outer ring fire, and a secondary air hole communicated with the secondary air passage is opened on the bottom side of the outer fire cap, resulting in the overflow liquid during cooking dripping into the secondary air passage, making it difficult to clean the burner and the burner having too high a height. In addition, since the air outlet of the first secondary air passage 13 is arranged outside the first inner ring gas passage 15, the secondary air flowing out through the first secondary air passage 13 can be used for both the inner ring fire combustion and the outer ring fire combustion, and can improve the combustion efficiency of both the outer ring fire and the inner ring fire at the same time.

[0045] Optionally, the first and second air passage 13 includes an air inlet portion 131, a first air transmission portion 134, a second air transmission portion 132, and an air outlet hole 133. The air inlet portion 131 is arranged in the vertical direction. The first air transmission portion 134 is arranged in the horizontal direction, and the inner end of the first air transmission portion 134 communicates with the air inlet portion 131. The second air transmission portion 132 is arranged in a horizontal direction around the outer peripheral side of the first inner-ring gas passage 15, and the outer end of the first air transmission portion 134 communicates with the second air transmission portion 132. The air outlet hole 133 is opened on the upper side of the second air transmission portion 132 and communicates with the second air transmission portion 132. After the secondary air enters through the air inlet portion 131, it sequentially passes through the first air transmission portion 134 and the second air transmission portion 132 and then flows out from the air outlet hole 133 to provide secondary air for the inner-ring flame and the outer-ring flame.

[0046] Optionally, the air inlet portion 131 is arranged in the middle of the outer burner cap body 11, the first inner-ring gas passage 15 is arranged on the outer peripheral side of the air inlet portion 131, and the first air transmission portion 134 passes through the first inner-ring gas passage 15 to communicate the first air transmission portion 134 and the second air transmission portion 132, so that the middle of the outer burner cap body 11 can both realize the transmission of the inner-ring gas and the transmission of the secondary air, with a simple and compact structure.

[0047] Optionally, there are a plurality of first air transmission portions 134, and the plurality of first air transmission portions 134 are evenly distributed on the outer peripheral side of the air inlet portion 131. A first inner-ring gas passage 15 is formed between two adjacent first air transmission portions 134. In this way, the secondary air can be evenly transmitted to the second air transmission portion 132 through the first air transmission portion 134, so that the secondary air can flow out of the air outlet hole 133 more evenly. At the same time, the inner-ring gas can also flow out of the plurality of first inner-ring gas passages 15 evenly to the inner flame holes 32 of the inner burner cap 3, facilitating the uniform combustion of the inner-ring flame.

[0048] Optionally, there are a plurality of air outlet holes 133, and the plurality of air outlet holes 133 are evenly distributed on the upper side of the second air transmission portion 132 to uniformly provide secondary air for the inner flame holes 32.

[0049] Optionally, a first liquid receiving groove 10 is arranged on the upper side of the outer burner cap body 11 and is located on the outer peripheral side of the first inner-ring gas passage. On the upper side of the inner end portion of the first liquid receiving groove 10, there is a liquid blocking step 101 protruding upward. The air outlet hole 133 is opened on the liquid blocking step 101. The first liquid receiving groove 10 can receive the overflow liquid during cooking, and the liquid blocking step 101 can prevent the accumulated liquid in the first liquid receiving groove 10 from flowing into the air outlet hole 133.

[0050] Optionally, a fire transfer hole 16 and a first liquid guide groove 17 are formed in the outer side wall of the first liquid storage tank 10. Both the fire transfer hole 16 and the first liquid guide groove 17 communicate the first liquid storage tank 10 with the outside of the outer fire cover body 11. The bottom end of the fire transfer hole 16 is higher than the bottom end of the first liquid guide groove 17. At least two fire avoidance areas 18 are provided on the outer peripheral side of the outer fire cover body 11. A plurality of outer fire holes 12 are provided between two adjacent fire avoidance areas 18. The fire transfer hole 16 and the first liquid guide groove 17 are arranged at different fire avoidance areas 18. By providing the fire transfer hole 16, the inner ring flame can be transmitted to the outer fire holes 12 formed in the outer fire cover body 11 through the fire transfer hole 16. By providing the first liquid guide groove 17, the accumulated liquid in the first liquid storage tank 10 can flow out of the outer side of the outer fire cover body 11 through the first liquid guide groove 17. The bottom end of the fire transfer hole 16 is set higher than the first liquid guide groove 17 so that the accumulated liquid in the first liquid storage tank 10 will not flow out through the fire transfer hole 16. By arranging the fire transfer hole 16 and the first liquid guide groove 17 at different fire avoidance areas 18, it is convenient for fire transfer and liquid guiding, and when the liquid flows out of the outer side of the outer fire cover body 11, the flame of the outer fire holes 12 will not be extinguished. In addition, during the normal combustion process of the burner, the setting of the fire avoidance area 18 enables part of the secondary air to enter the inner fire holes 32 through the fire avoidance area 18, thereby further improving the combustion efficiency of the inner ring flame. A first outer ring gas channel 14 with an opening facing downward is formed on the lower side of the outer fire cover body 11. The first outer ring gas channel 14 communicates with the outer fire holes 12.

[0051] Optionally, it further includes a shielding member 2. The shielding member 2 is installed on the outer fire cover body 11 and is located above the air outlet of the first secondary air channel 13. There is an air outlet gap 100 between the inner side of the shielding member 2 and the outer fire cover body 11. The air outlet gap 100 communicates the air outlet of the first secondary air channel 13 with the upper part of the shielding member 2. By providing the shielding member 2, it can shield the overflowing liquid from dripping onto the air outlet of the first secondary air channel 13, and at the same time enable the secondary air to flow out above the shielding member 2 through the air outlet gap 100 to provide secondary air for the inner ring fire and the outer ring fire.

[0052] Optionally, an assembly convex ring 102 is provided on the upper side of the outer fire cover body 11 and is located on the outer peripheral side of the first inner ring gas channel 15. The assembly convex ring 102 protrudes upward from the outer fire cover body 11. The shielding member 2 includes a first shielding portion 21 and a second shielding portion 22. The first shielding portion 21 is arranged horizontally above the air outlet of the first secondary air channel 13. The second shielding portion 22 is connected to the outer side of the first shielding portion 21 and extends in the vertically downward direction. The lower end of the second shielding portion 22 is connected to or abuts against the upper side surface of the outer fire cover body 11. There is an air outlet gap 100 between the inner end of the first shielding portion 21 and the assembly convex ring 102. The structure of the shielding member 2 is simple, the assembly is simple, and the stability is good.

[0053] Optionally, the first shielding portion 21 is inclined downward from inside to outside, so that the overflow liquid dripping onto the first shielding portion 21 can flow outward along the first shielding portion 21, avoiding the accumulation of overflow liquid on the first shielding portion 21.

[0054] On the other hand, the present invention provides a burner, including an inner fire cap 3 and the above-mentioned outer fire cap. The inner fire cap 3 includes an inner fire cap body 31 installed in the middle of the outer fire cap body 11. A second inner ring gas passage 37 communicating with the first inner ring gas passage 15 is opened on the lower side of the inner fire cap body 31. Inner fire holes 32 communicating with the second inner ring gas passage 37 are opened on the circumferential side of the inner fire cap body 31. A brim 35 is opened on the circumferential side of the upper end of the inner fire cap body 31. The brim 35 extends outward from above the air outlet gap 100 to above the shielding member 2 from inside to outside. The setting of the brim 35 can prevent the overflow liquid from flowing to the inner fire holes 32, and at the same time can also prevent the overflow liquid from flowing into the air outlet holes 133 through the air outlet gap 100, with a simple and compact structure.

[0055] Optionally, a second liquid receiving groove 33 is further provided on the upper side of the inner fire cap body 31. A second liquid guiding groove 34 is opened on the outer side wall of the second liquid receiving groove 33. The second liquid guiding groove 34 communicates the second liquid receiving groove 33 with the outside of the inner fire cap body 31. The outer end of the second liquid receiving groove 33 is located above the shielding member 2 or the second liquid receiving groove 33, so that the overflow liquid can be received in the first liquid receiving groove 10, and then flow out to the upper side surface of the shielding member 2 through the second liquid guiding groove 34, and then flow out through the shielding member 2 to the first liquid receiving groove 10, or directly flow out to the first liquid receiving groove 10 through the second liquid guiding groove 34.

[0056] Optionally, it further includes a burner head 4. The burner head 4 includes a burner head 4 body, and a second secondary air passage 42, a third inner ring gas passage 43, and a second outer ring gas passage 44 are successively opened in the burner head 4 body from inside to outside. The second secondary air passage 42 and the first secondary air passage 13 are connected from bottom to top to form a secondary air flow passage. Further, the second secondary air passage 42 is connected to the lower end of the air inlet portion 131. The third inner ring gas passage 43 is connected to the first inner ring gas passage 15 to form an inner ring gas flow passage, and the second outer ring gas passage 44 is connected to the first outer ring gas passage 14 to form an outer ring gas flow passage.

[0057] Optionally, it further includes an ignition needle 5. Ignition holes communicating with the first inner ring gas passage 15 are further provided on the circumferential side of the inner fire cap body 31. The ignition needle 5 is installed on the burner head 4 body and extends from above the outer fire cap body 11 to one side of the ignition hole.

[0058] Optionally, a third shielding portion 36 extending outward is further provided on the circumferential side of the brim 35. The third shielding portion 36 is located above the ignition hole and the ignition needle 5 for shielding the ignition hole and the ignition needle 5 from the overflow liquid.

[0059] In another aspect of the present invention, a gas stove includes the above burner.

[0060] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention.

Claims

1. An external fire cover, characterized in that: It comprises an outer fire cover body (11), wherein a first secondary air passage (13) and a first inner ring gas passage (15) which pass through the upper and lower sides of the outer fire cover body (11) are provided in the middle of the outer fire cover body (11); an air outlet of the first secondary air passage (13) is arranged on the upper side of the outer fire cover body (11) and is located on the outer side of the first inner ring gas passage (15); and an air inlet of the first secondary air passage (13) is arranged on the lower side of the outer fire cover body (11).

2. The outer fire cover according to claim 1, characterized in that: The first secondary air passage comprises: An air inlet (131) is arranged in a vertical direction; A first air transfer portion (134) is arranged in a horizontal direction, and an inner end of the first air transfer portion (134) is connected to the air inlet portion (131); A second gas transfer portion (132) is horizontally arranged on the outer peripheral side of the first inner ring gas channel (15), and an outer end of the first gas transfer portion (134) is connected to the second gas transfer portion (132); The air outlet hole (133) is disposed on the upper side of the second air transmission part (132) and is in communication with the second air transmission part (132).

3. The outer fire cover according to claim 2, characterized in that: The air intake portion (131) is arranged in the middle part of the outer fire cover body (11), the first inner ring gas channel (15) is arranged on the outer peripheral side of the air intake portion (131), and the first gas transfer portion (132) passes through the first inner ring gas channel (15) to connect the first gas transfer portion (134) and the second gas transfer portion (132).

4. The outer fire cover according to claim 3, characterized in that: A plurality of the first gas transfer parts (134) are provided, and the plurality of the first gas transfer parts (134) are evenly distributed on the outer peripheral side of the air inlet part (131), and the first inner ring gas channel (15) is formed between two adjacent first gas transfer parts (134).

5. The outer fire cover according to claim 2, characterized in that: A plurality of the air outlet holes (133) are provided, and the plurality of the air outlet holes (133) are evenly distributed on the upper side of the second air transfer portion (132).

6. The outer fire cover according to claim 2, characterized in that: A first liquid storage tank (10) located on the outer peripheral side of the first inner ring gas channel (15) is arranged on the upper side of the outer fire cover body (11), and a liquid blocking step (101) protruding upward is arranged on the upper side of the inner end of the first liquid storage tank (10), and the gas outlet (133) is opened on the liquid blocking step (101).

7. The outer fire cover according to claim 6, characterized in that: A fire transfer hole (16) and a first liquid guide groove (17) are provided on the outer wall of the first liquid storage tank (10), and the fire transfer hole (16) and the first liquid guide groove (17) are both connected to the first liquid storage tank (10) and the outer side of the outer fire cover body (11). The bottom end of the fire transfer hole (16) is higher than the bottom end of the first liquid guide groove (17). At least two fire avoidance areas (18) are provided on the outer peripheral side of the outer fire cover body (11), and a plurality of outer fire holes (12) are provided between two adjacent fire avoidance areas (18). The fire transfer hole (16) and the first liquid guide groove (17) are arranged in different fire avoidance areas (18). A first outer ring gas channel (14) with an opening facing downward is provided on the lower side of the outer fire cover body (11), and the first outer ring gas channel (14) is connected to the outer fire hole (12).

8. The outer fire cover according to any one of claims 2 to 7, characterized in that: It also includes a shielding member (2), which is installed on the outer fire cover body (1) and is located above the air outlet of the first secondary air channel (13), and there is an air outlet gap (100) between the inner side of the shielding member (2) and the outer fire cover body (11), and the air outlet gap (100) connects the air outlet of the first secondary air channel (13) and the upper part of the shielding member (2).

9. The outer fire cover according to claim 8, characterized in that: The upper side of the outer fire cover body (11) is provided with an assembly convex ring (102) located on the outer peripheral side of the first inner ring gas channel (15), and the assembly convex ring (102) is arranged to protrude upward of the outer fire cover body (11). The shielding member (2) includes a first shielding portion (21) and a second shielding portion (22). The first shielding portion (21) is arranged above the air outlet of the first secondary air channel (13) in the horizontal direction, and the second shielding portion (22) is connected to the outer side of the first shielding portion (21) and extends in the vertical downward direction. The lower end of the second shielding portion (22) is connected to or abuts against the upper side surface of the outer fire cover body (11), and the air outlet gap (100) is provided between the inner end of the first shielding portion (21) and the assembly convex ring (102).

10. The outer fire cover according to claim 9, characterized in that: The first shielding portion (21) is arranged to be inclined downward from the inside to the outside.

11. A burner, characterized in that: It comprises an inner fire cover (3) and an outer fire cover as claimed in any one of claims 8 to 10, wherein the inner fire cover (3) comprises an inner fire cover body (31) installed in the middle of the outer fire cover body (11), a second inner ring gas channel (37) connected to the first inner ring gas channel (15) is provided on the lower side of the inner fire cover body (31), an inner fire hole (32) connected to the second inner ring gas channel (37) is provided on the peripheral side of the inner fire cover body (31), a brim (35) is provided on the peripheral side of the upper end of the inner fire cover body (31), and the brim (35) extends from the inside to the outside from the top of the gas outlet gap (100) toward the outside to the top of the shielding member (2).

12. The burner according to claim 11, characterized in that A second liquid storage tank (33) is also provided on the upper side of the inner fire cover body (31), and a second liquid guide tank (34) is provided on the outer side wall of the second liquid storage tank (33). The second liquid guide tank (34) connects the second liquid storage tank (33) with the outer side of the inner fire cover body (31), and the outer end of the second liquid storage tank (33) is located above the shielding member (2).

13. A gas stove, characterized in that: Comprising the burner according to claim 11 or 12.

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