Burner burner and gas cooker

Abstract

The furnace end burner comprises a burner body, a first fire cover and a second fire cover, the first fire cover and the second fire cover are arranged on the upper side of the burner body, an ignition assembly used for ignition is arranged in the middle of the burner body, and an annular air cavity with an upward opening is formed in the periphery of the ignition assembly. The burner body is provided with an air inlet channel communicated with the annular air cavity, the first fire cover and the second fire cover are annular and can partially shield an opening of the annular air cavity, inner ring fire holes in the annular inner side of the annular air cavity are defined between the first fire cover and the burner body, and the first fire cover is located on the annular inner side of the second fire cover and provided with a fire leading groove. A middle ring fire hole is defined between the second fire cover and the first fire cover, an outer ring fire hole is formed in the second fire cover, and the inner ring fire hole, the middle ring fire hole, the outer ring fire hole and the ignition groove all communicate with the annular air cavity. The electric cooker can achieve high heating power and is convenient to cook.

Description

Technical Field

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

[0002] The stove top burner is an important part of the gas stove. The existing stove top burners usually adopt an inner and outer ring fire combustion heating structure. When in use, the inner and outer rings of the stove top burner respectively output gas for combustion and heating. The structure is relatively simple. Due to the limited heating area of ​​the inner and outer ring fire, the heating power is low and the structure needs to be improved. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a stove burner, which can achieve + technical effects.

[0004] The utility model also provides a gas cooker with the stove top burner.

[0005] According to the stove head burner described in the embodiment of the first aspect of the utility model, it includes a burner body, a first fire cover and a second fire cover, an ignition assembly is provided in the middle of the burner body, and the burner body is provided with an annular air cavity opening upward on the outer periphery of the ignition assembly, and the burner body is provided with an air intake passage connected to the annular air cavity, the first fire cover and the second fire cover are both annular and are both arranged on the upper side of the burner body, and the two can partially block the opening of the annular air cavity respectively, and an inner circle fire hole is defined between the first fire cover and the burner body, and the inner The ring fire hole is located on the inner side of the annular air cavity, the first fire cover is provided with an ignition groove, the first fire cover is located on the inner side of the ring of the second fire cover, a middle ring fire hole is defined between the second fire cover and the first fire cover, the second fire cover is provided with an outer ring fire hole, the inner ring fire hole, the ignition groove, the middle ring fire hole and the outer ring fire hole are all connected to the annular air cavity, the ignition assembly can ignite the gas output from the inner ring fire hole and ignite the gas output from the middle ring fire hole through the ignition groove, and the gas output from the outer ring fire hole can be ignited by the flame at the middle ring fire hole.

[0006] The stove head burner according to the embodiment of the utility model has at least the following beneficial effects: when in use, the gas is input into the annular air cavity through the air inlet channel, and then output through the inner circle fire hole, the ignition groove, the middle circle fire hole and the outer circle fire hole respectively, the ignition component ignites the gas output from the inner circle fire hole and ignites the gas output from the middle circle fire hole through the ignition groove, the gas output from the outer circle fire hole is ignited by the flame at the middle circle fire hole, thereby realizing the output combustion of the gas, and heating is carried out by using the flames at the inner, middle and outer circles and the ignition groove, the heating area is large, the heating power that can be achieved is high, and it is convenient to use for cooking.

[0007] According to some embodiments of the utility model, a plurality of the ignition grooves are provided and are spaced apart along the circumference of the first fire cover, and a plurality of the outer ring fire holes are provided and are spaced apart along the circumference of the second fire cover.

[0008] According to some embodiments of the present invention, the middle circle fire hole is annular, and the end of the ignition groove and the end of the outer circle fire hole are both connected to the middle circle fire hole.

[0009] According to some embodiments of the utility model, the burner body is provided with a supporting inner edge on the inner side of the annular air cavity, the burner body is provided with a supporting outer edge on the outer side of the annular air cavity, the inner side of the ring of the first fire cover is provided with supporting feet, the inner side of the ring of the first fire cover cooperates with the supporting inner edge through the supporting feet, the outer side of the ring of the first fire cover is suspended, the outer side of the ring of the second fire cover cooperates with the supporting outer edge, and the inner side of the ring of the second fire cover is suspended.

[0010] According to some embodiments of the present invention, the inner side of the ring of the first fire cover can block the air outlet of the inner circle fire hole in the up and down directions.

[0011] According to some embodiments of the present invention, first ribs are provided on both sides of the ignition groove along the width direction.

[0012] According to some embodiments of the utility model, the outer ring fire hole is in the shape of an elongated strip, and second ribs are provided on both sides of the outer ring fire hole along the width direction.

[0013] According to some embodiments of the utility model, the burner body is provided with a first blocking portion in the annular air cavity, the first blocking portion divides the annular air cavity into a first annular air cavity and a second annular air cavity which are interconnected, the first annular air cavity is connected to the inner circle fire hole, the second annular air cavity is connected to the outer circle fire hole, the bottom wall of the annular air cavity is inclined so that the bottom wall of the first annular air cavity is lower than the bottom wall of the second annular air cavity, the air inlet passage is connected to the bottom of the first annular air cavity at an angle upward, and the gas output by the air inlet passage can make a circular motion around the first annular air cavity.

[0014] According to some embodiments of the utility model, the first blocking portion is provided on the bottom wall of the annular air cavity and extends upwardly and protrudes, the first blocking portion is located below the first fire cover, and the inner side of the ring of the second fire cover is provided with a second blocking portion extending downwardly.

[0015] The gas cooker according to the embodiment of the second aspect of the utility model comprises the burner head according to the embodiment of the first aspect of the utility model.

[0016] The gas cooker according to the embodiment of the utility model has at least the following beneficial effects: by adopting the above-mentioned stove head burner, the heating area is larger, the heating power that can be achieved is higher, and it is convenient to use for cooking.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of a stove burner according to an embodiment of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the middle burner;

[0021] Figure 3 for Figure 1 One of the cross-sectional structural diagrams of the middle furnace burner;

[0022] Figure 4 for Figure 1 The second schematic diagram of the cross-sectional structure of the middle furnace burner;

[0023] Figure 5 for Figure 4 Enlarged schematic diagram of part A.

[0024] Reference numerals:

[0025] Burner body 100, annular air cavity 101, first annular air cavity 102, second annular air cavity 103, air inlet passage 104, ignition assembly 110, support inner edge 120, chamfer 121, support outer edge 130, first blocking portion 140;

[0026] The first fire cover 200, the inner ring fire hole 201, the ignition groove 202, the support foot 210, and the first convex rib 220;

[0027] The second fire cover 300 , the middle circle fire hole 301 , the outer circle fire hole 302 , the second convex rib 310 , and the second blocking portion 320 . DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that if it involves orientation descriptions, the orientations or positional relationships indicated, such as up, down, front, back, left, right, etc., are based on the orientations or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, if the words "some", "greater than", "less than", "exceed", "over", "under", "within" etc. appear, among which "some" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number, and "over", "under", "within" etc. are understood to include the number.

[0031] If the first and second are described, they are only used to distinguish the technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Reference Figure 1 , Figure 2 and Figure 3A stove burner comprises a burner body 100, a first fire cover 200 and a second fire cover 300. An ignition assembly 110 is arranged in the middle of the burner body 100. The burner body 100 is provided with an annular air cavity 101 opening upward on the outer periphery of the ignition assembly 110. The burner body 100 is provided with an air inlet passage 104 communicating with the annular air cavity 101. The first fire cover 200 and the second fire cover 300 are both annular and arranged on the upper side of the burner body 100. The two can partially cover the opening of the annular air cavity 101 respectively. An inner circle fire hole 201 is defined between the first fire cover 200 and the burner body 100. The inner circle fire hole 201 is located at On the inner side of the annular air cavity 101, an ignition groove 202 is provided on the first fire cover 200. The first fire cover 200 is located on the inner side of the ring of the second fire cover 300. A middle circle fire hole 301 is defined between the second fire cover 300 and the first fire cover 200. An outer circle fire hole 302 is provided on the second fire cover 300. The inner circle fire hole 201, the ignition groove 202, the middle circle fire hole 301 and the outer circle fire hole 302 are all connected to the annular air cavity 101. The ignition assembly 110 can ignite the gas output from the inner circle fire hole 201 and ignite the gas output from the middle circle fire hole 301 through the ignition groove 202. The gas output from the outer circle fire hole 302 can be ignited by the flame at the middle circle fire hole 301.

[0034] It is understandable that if Figure 1 , Figure 2 and Figure 3 As shown, the ignition assembly 110 can be an ignition needle or a long-open flame assembly, which is arranged in the middle of the burner body 100, and the outer periphery is an annular air cavity 101 opening upward. The first fire cover 200 and the second fire cover 300 are both annular and are both arranged on the upper side of the burner body 100. The two cooperate to jointly cover the upper opening of the annular air cavity 101. The first fire cover 200 is located on the inner side of the ring of the second fire cover 300. The structure of the burner for outputting gas combustion is, from the inside to the outside, an inner circle fire hole 201, an ignition groove 202, a middle circle fire hole 301, and an outer circle fire hole 302.

[0035] When in use, the gas is input into the annular air cavity 101 through the air inlet channel 104, and then output through the inner circle fire hole 201, the ignition groove 202, the middle circle fire hole 301 and the outer circle fire hole 302 respectively. The ignition component 110 ignites the gas output from the inner circle fire hole 201 and ignites the gas output from the middle circle fire hole 301 through the ignition groove 202. The gas output from the outer circle fire hole 302 is ignited by the flame at the middle circle fire hole 301 to achieve the output combustion of the gas. By using the flames at the inner, middle and outer circles and the ignition groove 202 for heating, the heating area is large and the heating power that can be achieved is high, which is convenient for cooking.

[0036] In actual application, the specific structures of the burner body 100, the first fire cover 200 and the second fire cover 300 can be set accordingly according to actual use needs, which will not be described in detail here, but will be explained in detail below.

[0037] In some embodiments, a plurality of ignition grooves 202 are provided and are spaced apart along the circumference of the first fire cover 200 , and a plurality of outer ring fire holes 302 are provided and are spaced apart along the circumference of the second fire cover 300 .

[0038] It is understandable that if Figure 1 and Figure 2 As shown, multiple ignition grooves 202 are evenly spaced and distributed along the circumference of the first fire cover 200 to form a radial shape, which is conducive to increasing the heating area and facilitating the ignition of each part of the middle circle fire hole 301, thereby improving the uniformity of the ignition position distribution; multiple outer circle fire holes 302 are evenly spaced and distributed along the circumference of the second fire cover 300 to form a radial shape, thereby increasing the heating area of ​​the outer circle and improving the heating power. In actual application, the specific number of ignition grooves 202 and outer circle fire holes 302 can be set accordingly according to actual use needs.

[0039] Furthermore, the middle circle fire hole 301 is annular, and the end of the ignition groove 202 and the end of the outer circle fire hole 302 are both connected to the middle circle fire hole 301 .

[0040] It is understandable that if Figures 1 to 4 As shown, the inner diameter of the second fire cover 300 is larger than the outer diameter of the first fire cover 200, so that an annular middle circle fire hole 301 is formed between the second fire cover 300 and the first fire cover 200, and the ignition groove 202 and the outer circle fire hole 302 are both long strip structures, and the ends of both are connected to the middle circle fire hole 301. Through the annular middle circle fire hole 301, it is beneficial to synchronously ignite the gas output by each outer circle fire hole 302, improve the uniformity of the ignition position distribution, and help reduce the waste of gas. In actual application, the specific shapes of the middle circle fire hole 301, the ignition groove 202 and the outer circle fire hole 302 can also be changed accordingly according to actual use needs.

[0041] Furthermore, the burner body 100 is provided with a supporting inner edge 120 on the inner side of the annular air cavity 101, and the burner body 100 is provided with a supporting outer edge 130 on the outer side of the annular air cavity 101. The inner side of the ring of the first fire cover 200 is provided with a supporting foot 210, and the inner side of the ring of the first fire cover 200 cooperates with the supporting inner edge 120 through the supporting foot 210, and the outer side of the ring of the first fire cover 200 is suspended, and the outer side of the ring of the second fire cover 300 cooperates with the supporting outer edge 130, and the inner side of the ring of the second fire cover 300 is suspended.

[0042] It is understandable that if Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the inner side wall of the annular cavity 101 is the support inner edge 120, and the outer side wall of the annular cavity 101 is the support outer edge 130. The inner side of the first fire cover 200 is provided with a plurality of support feet 210 extending downward, and the support feet 210 abut against the step of the support inner edge 120 to support the first fire cover 200, so that the outer side of the ring of the first fire cover 200 is suspended. The outer side of the ring of the second fire cover 300 cooperates with the step of the support outer edge 130 to support the second fire cover 300, so that the inner side of the ring of the second fire cover 300 is suspended, which is convenient for the installation of the first fire cover 200 and the second fire cover 300. Since there is no connection between the two fire covers, the two fire covers can be disassembled separately, which is convenient for maintenance and replacement. In actual application, the connection relationship between the first fire cover 200, the second fire cover 300 and the burner body 100 can be changed accordingly according to actual use needs.

[0043] In some embodiments, the inner side of the ring of the first fire cover 200 can block the air outlet of the inner circle fire hole 201 in the up and down directions.

[0044] It is understandable that if Figure 4 and Figure 5 As shown, there is an upwardly inclined air outlet gap between the first fire cover 200 and the supporting inner edge 120 to form an annular inner circle fire hole 201. The upper inner side of the supporting inner edge 120 is provided with a chamfer 121, so that the air outlet of the inner circle fire hole 201 is moved outward to the lower side of the inner side of the ring of the first fire cover 200, so that the inner side of the ring of the first fire cover 200 can block the air outlet of the inner circle fire hole 201 in the up and down directions, reducing the possibility of foreign matter such as water droplets and oil entering the annular air cavity 101 through the inner circle fire hole 201, which is convenient for use.

[0045] In actual application, in addition to the above structure, the inner diameter of the first fire cover 200 can be reduced so that the inner side of the ring of the first fire cover 200 can form a structure similar to an eaves, thereby blocking the air outlet of the inner circle fire hole 201 in the up and down directions to prevent foreign matter from entering. The specific setting can be based on actual use needs.

[0046] In some embodiments, both sides of the ignition groove 202 along the width direction are provided with first ribs 220. Figure 1 and Figure 2 As shown, each ignition groove 202 is provided with first convex ribs 220 on both sides along the width direction, and the first convex ribs 220 are raised relative to the surface of the first fire cover 200, so as to reduce the possibility of foreign matter entering the annular air cavity 101 through the ignition groove 202, and facilitate use. In actual application, the specific structure of the first convex ribs 220 can be set accordingly according to actual use needs.

[0047] In some embodiments, the outer ring fire hole 302 is in the shape of a long strip, and the outer ring fire hole 302 is provided with a second rib 310 on both sides along the width direction. Figure 1 and Figure 2 As shown, each outer ring fire hole 302 is provided with a second convex rib 310 on both sides along the width direction, and the second convex rib 310 is raised relative to the surface of the second fire cover 300, so as to reduce the possibility of foreign matter entering the annular air cavity 101 through the outer ring fire hole 302, and facilitate use. In actual application, the specific structure of the second convex rib 310 can be set accordingly according to actual use needs.

[0048] In some embodiments, the burner body 100 is provided with a first blocking portion 140 in the annular air cavity 101, and the first blocking portion 140 divides the annular air cavity 101 into a first annular air cavity 102 and a second annular air cavity 103 which are interconnected. The first annular air cavity 102 is connected to the inner ring fire hole 201, and the second annular air cavity 103 is connected to the outer ring fire hole 302. The bottom wall of the annular air cavity 101 is inclined so that the bottom wall of the first annular air cavity 102 is lower than the bottom wall of the second annular air cavity 103. The air inlet channel 104 is connected to the bottom of the first annular air cavity 102 at an angle upward, and the gas output by the air inlet channel 104 can make a circular motion around the first annular air cavity 102.

[0049] It is understandable that if Figures 1 to 4 As shown, after the gas output from the inner circle fire hole 201 is ignited, it takes a certain amount of time for the flame to move and ignite to the outer circle fire hole 302. If the gas in the annular air cavity 101 is simultaneously output from the inner circle fire hole 201, the middle circle fire hole 301 and the outer circle fire hole 302, although the gas at the inner circle fire hole 201 can be quickly ignited by the ignition assembly 110, a large amount of gas will accumulate around the outer circle fire hole 302 during the period when the flame is ignited to the outer circle fire hole 302. When the gas at the outer circle fire hole 302 is ignited, deflagration will occur. Especially for high-power burners, the gas output is very large. If the gas cannot be ignited in time, the deflagration generated during ignition is dangerous.

[0050] Reference Figure 2 , Figure 3 and Figure 4, the air inlet channel 104 inputs the gas into the first ring air cavity 102 in an obliquely upward direction, so that the gas and the premixed air can make a circular motion around the first ring air cavity 102, thereby improving the mixing effect of the gas and the air, which is beneficial to the full combustion of the gas and the uniform output of the gas; when the air inlet channel 104 just starts to input the gas into the annular air cavity 101, the gas is blocked by the first blocking portion 140, and it is difficult to flow directly and quickly toward the direction of the outer ring fire hole 302. Moreover, due to the inclination of the bottom wall of the annular air cavity 101, the gas moving in a circular motion around the first ring air cavity 102 has a certain centripetal tendency, which is equivalent to increasing the path for the gas to be transported to the outer ring fire hole 302, and increasing the time for transporting the gas to the outer ring fire hole 302, thereby delaying the gas output time of the outer ring fire hole 302, and coordinating with the time required for the flame to move and ignite, which is beneficial to the timely ignition of the gas output from the outer ring fire hole 302, which is beneficial to fully utilize the gas and reduce the possibility of explosion.

[0051] In actual application, the specific inclination of the bottom wall of the annular air cavity 101 and the air inlet passage 104 can be set accordingly according to actual use.

[0052] In some embodiments, the first blocking portion 140 is disposed on the bottom wall of the annular air cavity 101 and extends upwardly and protrudes. The first blocking portion 140 is located below the first fire cover 200 , and a second blocking portion 320 extending downwardly is disposed on the inner side of the ring of the second fire cover 300 .

[0053] It is understandable that if Figure 2 , Figure 3 and Figure 4 As shown, the first blocking portion 140 is located below the first fire cover 200, and the outer circle fire hole 302 and the middle circle fire hole 301 are both connected to the second ring air cavity 103. By setting the first blocking portion 140, the time for the gas to be transported to the middle circle fire hole 301 and the outer circle fire hole 302 is delayed, and the time required for the flame to move along the ignition groove 202 to ignite is coordinated, which is conducive to timely ignition of the gas output from the middle circle fire hole 301; and by setting the second blocking portion 320, the second blocking portion 320 blocks the direct transportation of the gas in the second ring air cavity 103 from the middle circle fire hole 301 to the outer circle fire hole 302, delaying the time for the gas in the second ring air cavity 103 to be transported from the middle circle fire hole 301 to the outer circle fire hole 302, further reducing the waste of gas output at the outer circle fire hole 302, which is conducive to its timely ignition and reducing the possibility of explosion.

[0054] In actual application, the specific structures of the first blocking portion 140 and the second blocking portion 320 can be set accordingly according to actual use requirements.

[0055] The gas cooker according to the second embodiment of the utility model comprises the stove top burner according to the first embodiment of the utility model.

[0056] According to the gas cooker of the embodiment of the utility model, by adopting the burner head burner, the heating area is large, the heating power can be high, and it is convenient for cooking. In actual application, the specific structure of the gas cooker can be set according to the actual use needs. Since other structures of the gas cooker of the embodiment of the utility model are known to ordinary technicians in the field, they are not described in detail here.

[0057] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A stove burner, characterized in that: include: A burner body, wherein an ignition assembly is provided in the middle of the burner body, an annular air cavity opening upward is provided on the outer periphery of the ignition assembly, and an air inlet passage communicating with the annular air cavity is provided on the burner body; A first fire cover, which is annular and disposed on the upper side of the burner body, and can partially cover the opening of the annular air cavity, an inner ring fire hole is defined between the first fire cover and the burner body, and the inner ring fire hole is located on the inner side of the annular air cavity, and an ignition groove is provided on the first fire cover; The second fire cover is annular and arranged on the upper side of the burner body, and can partially cover the opening of the annular air cavity. The first fire cover is located on the inner side of the ring of the second fire cover. A middle circle fire hole is defined between the second fire cover and the first fire cover. The second fire cover is provided with an outer circle fire hole. The inner circle fire hole, the ignition groove, the middle circle fire hole and the outer circle fire hole are all connected to the annular air cavity. The ignition assembly can ignite the gas output from the inner circle fire hole and ignite the gas output from the middle circle fire hole through the ignition groove. The gas output from the outer circle fire hole can be ignited by the flame at the middle circle fire hole.

2. The stove burner according to claim 1, characterized in that: The ignition grooves are provided in plurality and are distributed at intervals along the circumference of the first fire cover, and the outer ring fire holes are provided in plurality and are distributed at intervals along the circumference of the second fire cover.

3. The stove burner according to claim 2, characterized in that: The middle circle fire hole is annular, and the end of the ignition groove and the end of the outer circle fire hole are both connected to the middle circle fire hole.

4. The stove burner according to claim 3, characterized in that: The burner body is provided with a supporting inner edge on the inner side of the annular air cavity, and the burner body is provided with a supporting outer edge on the outer side of the annular air cavity. The inner side of the ring of the first fire cover is provided with supporting feet, and the inner side of the ring of the first fire cover cooperates with the supporting inner edge through the supporting feet, and the outer side of the ring of the first fire cover is suspended in the air, and the outer side of the ring of the second fire cover cooperates with the supporting outer edge, and the inner side of the ring of the second fire cover is suspended in the air.

5. The stove burner according to claim 1, characterized in that: The inner side of the ring of the first fire cover can block the air outlet of the inner circle fire hole in the up and down directions.

6. The stove burner according to claim 1, characterized in that: The first ribs are provided on both sides of the ignition groove along the width direction.

7. The stove burner according to claim 1, characterized in that: The outer ring fire holes are in the shape of long strips, and second convex ribs are arranged on both sides of the outer ring fire holes along the width direction.

8. The stove burner according to claim 1, characterized in that: The burner body is provided with a first blocking portion in the annular air cavity, and the first blocking portion divides the annular air cavity into a first annular air cavity and a second annular air cavity which are interconnected. The first annular air cavity is connected to the inner ring fire hole, and the second annular air cavity is connected to the outer ring fire hole. The bottom wall of the annular air cavity is inclined so that the bottom wall of the first annular air cavity is lower than the bottom wall of the second annular air cavity. The air inlet passage is connected to the bottom of the first annular air cavity at an angle upward, and the gas output by the air inlet passage can make a circular motion around the first annular air cavity.

9. The stove burner according to claim 8, characterized in that: The first blocking portion is arranged on the bottom wall of the annular air cavity and extends upwardly to bulge. The first blocking portion is located below the first fire cover. The inner side of the ring of the second fire cover is provided with a second blocking portion extending downwardly.

10. A gas cooker, characterized in that: It comprises a stove top burner according to any one of claims 1 to 9.

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