A burner with inwardly swirling flame

Abstract

The present invention discloses a burner with an internally swirling flame, which includes a burner head, a gas distributor, a flame stabilizer ring, an inner burner cap and an outer burner cap; the gas distributor and the inner burner cap are both installed on the burner head, and the inner gas chamber of the inner burner cap is communicated with the inner fire channel of the burner head; the outer burner cap is installed on the gas distributor, and a flame stabilizer ring is installed between one side of the outer burner cap close to the center of the outer burner cap and the gas distributor. The outer burner cap, the gas distributor and the flame stabilizer ring are nested with each other to form an outer gas chamber, and the outer gas chamber is communicated with the outer fire channel of the burner head; multiple groups of fire trough groups communicated with the outer gas chamber are annularly distributed on the outer burner cap, and each group of fire trough groups can spray gas towards the center of the outer burner cap to form an internally swirling long conical flame; a shielding part protrudes upward on the side of the flame stabilizer ring far from the outer gas chamber, and the shielding part can shield the lower half of the gas outlet side of the fire trough group. The present invention can meet the use requirements of non-flat pans, and greatly reduce the risk of the flame overflowing the secondary air airway opening of the gas distributor and burning when cooking with a non-flat pan.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen stoves, and particularly relates to a burner with inwardly swirling flames. Background Art

[0002] Currently, in order to achieve high energy efficiency, the pot support of the inwardly swirling gas stoves on the market is usually controlled at a relatively low height. When users cook with non-flat bottom pots, such as pointed bottom pots and round bottom pots, due to the concentrated inwardly swirling flames and the low height of the pot support, the distance between the pot and the burner is relatively close, resulting in insufficient combustion of the gas. The unburned gas not only increases the content of carbon monoxide in the dry flue gas, but also mixes with the air at the air supplement airway opening of the secondary air in the burner head. When ignited by the flame on the fire cover, it stably burns at the air supplement airway opening of the secondary air in the burner head, accelerating the aging of components such as the burner and the liquid receiving tray, and easily causing serious safety accidents. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a burner with inwardly swirling flames.

[0004] The present invention discloses a burner with inwardly swirling flames, including a burner head, a burner head cover, a flame stabilizer ring, an inner fire cover, and an outer fire cover;

[0005] The burner head cover and the inner fire cover are both installed on the burner head, and the inner gas chamber of the inner fire cover is connected to the inner fire channel of the burner head;

[0006] The outer fire cover is installed on the burner head cover. A flame stabilizer ring is installed between one side of the outer fire cover close to the center of the outer fire cover and the burner head cover. The outer fire cover, the burner head cover, and the flame stabilizer ring are nested with each other to form an outer gas chamber, and the outer gas chamber is connected to the outer fire channel of the burner head;

[0007] A plurality of groups of fire trough groups connected to the outer gas chamber are annularly arranged on the outer fire cover, and each group of fire trough groups can spray gas towards the center of the outer fire cover to form inwardly swirling long conical flames;

[0008] One side of the flame stabilizer ring away from the outer gas chamber bulges upward to form a shielding portion, and the shielding portion can shield the lower half of the gas outlet side of the fire trough group.

[0009] As a further improvement of the present invention, the burner head includes a burner head body;

[0010] The outer fire channel and the inner fire channel are provided in the burner head body, and a first ejector pipe connected to the inner fire channel and a second ejector pipe connected to the outer fire channel are respectively provided on the outer side of the burner head body;

[0011] A plurality of upwardly protruding portions are annularly provided on the top of the burner head body. Each of the protruding portions is provided with a through hole of the protruding portion communicating with the outer fire channel. The burner is nested on the plurality of protruding portions, and the inside of the burner communicates with the through holes of the plurality of protruding portions;

[0012] An inner ring groove communicating with the inner fire channel is provided at the central position of the top of the burner head body, and the inner fire cover is nested above the inner ring groove.

[0013] As a further improvement of the present invention, a plurality of burner through holes communicating with the through holes of the protruding portions are annularly arranged inside the burner;

[0014] Secondary air supply airway openings are provided between the inner side wall and the outer side wall of the burner corresponding to two adjacent burner through holes. The secondary air supply airway openings penetrate the outer side wall and the inner side wall of the burner; external air can enter the central area of the outer fire cover through the plurality of secondary air supply airway openings.

[0015] As a further improvement of the present invention, the inner fire cover is of an annular structure;

[0016] A plurality of inner fire cover fire groove holes are provided on the top of the inner fire cover. The plurality of inner fire cover fire groove holes can spray gas upward above the inner fire cover to form a flame in the vertical direction.

[0017] As a further improvement of the present invention, the setting height of the inner fire cover fire groove holes is not higher than the setting height of the fire groove group on the outer fire cover.

[0018] As a further improvement of the present invention, the outer fire cover is a ring-shaped cavity structure with a bottom opening formed by a top wall, a ring-shaped inner side wall and a ring-shaped outer side wall.

[0019] As a further improvement of the present invention, the outer end of the top wall is connected to the top of the ring-shaped outer side wall, and the outer end of the top wall extends a certain distance beyond the top of the ring-shaped outer side wall to form a clamping portion; the ring-shaped outer side wall is nested inside the outer side wall of the burner, and the clamping portion overlaps the top of the outer side wall of the burner below;

[0020] The inner end of the top wall is connected to the top of the ring-shaped inner side wall, and the ring-shaped inner side wall is an inner conical surface with a larger top diameter than its bottom diameter. A plurality of groups of the fire groove groups are annularly arranged on the inner conical surface.

[0021] As a further improvement of the present invention, a convex strip is annularly provided on the bottom of the flame stabilizing ring near the side of the outer gas chamber. The flame stabilizing ring is placed on the top of the inner side wall of the burner, and the convex strip is nested inside the inner side wall of the burner;

[0022] A gap is provided annularly between the shielding portion at the top of the flame stabilizing ring and the annular inner side wall to form a flame stabilizing groove.

[0023] As a further improvement of the present invention, each group of the fire groove groups includes at least two inner swirling fire groove holes extending upward from the bottom of the annular inner side wall;

[0024] Multiple inner swirling fire groove holes in each group of the fire groove groups are arranged in parallel, and each inner swirling fire groove hole extends along the width direction of the annular inner side wall.

[0025] As a further improvement of the present invention, multiple inner swirling fire groove holes are arranged at intervals and are arranged in a clockwise or counterclockwise rotation and inclination in the bottom projection of the outer fire cover.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] By providing multiple groups of fire groove groups communicated with the outer gas chamber annularly on the annular inner side wall of the outer fire cover, the present invention can make the flames of the inner swirling fire groove holes in each group of fire groove groups overlap to form a long conical flame. The interval between adjacent two groups of fire groove groups can sufficiently supplement the secondary air required for gas combustion; compared with the conventional flame, the superimposed long conical flame is relatively divergent and has a lower overall height, which can meet the use requirements of non-flat pans and greatly reduce the risk of flame overflowing the secondary air airway opening of the burner during cooking with non-flat pans.

[0028] By setting the height of the inner fire cover fire groove holes not higher than the height of the fire groove groups on the outer fire cover, the present invention makes the inner and outer fire covers arranged in layers, so that there is more air supplement between the inner and outer flames, making the combustion more complete and improving the combustion efficiency.

[0029] By providing a flame stabilizing ring between the outer fire cover and the burner, and providing a gap annularly between the shielding portion at the top of the flame stabilizing ring and the annular inner side wall to form a flame stabilizing groove, the present invention can improve the fire transfer efficiency of the outer fire cover and solve the problems of large air duct flow rate and unstable flame at the air outlet near the burner head of the burner. Description of the Drawings

[0030] Figure 1 It is a schematic diagram of the overall assembly structure of a burner with inwardly swirling flame disclosed in an embodiment of the present invention;

[0031] Figure 2 It is a schematic diagram of the overall assembly structure of a burner with inwardly swirling flame disclosed in an embodiment of the present invention from another angle;

[0032] Figure 3 It is a schematic side sectional view of the structure of a burner with inwardly swirling flame disclosed in an embodiment of the present invention;

[0033] Figure 4Schematic diagram of the flame stabilizing groove of a burner with inwardly swirling flame according to an embodiment of the present invention;

[0034] Figure 5 Schematic diagram of the burner head of a burner with inwardly swirling flame according to an embodiment of the present invention;

[0035] Figure 6 Schematic diagram of the internal structure of the burner head of a burner with inwardly swirling flame according to an embodiment of the present invention;

[0036] Figure 7 Schematic diagram of the flame divider of a burner with inwardly swirling flame according to an embodiment of the present invention;

[0037] Figure 8 Schematic diagram of the flame divider of a burner with inwardly swirling flame from another angle according to an embodiment of the present invention;

[0038] Figure 9 Schematic diagram of the inner fire cover of a burner with inwardly swirling flame according to an embodiment of the present invention;

[0039] Figure 10 Schematic diagram of the outer fire cover of a burner with inwardly swirling flame according to an embodiment of the present invention;

[0040] Figure 11 Schematic diagram of the outer fire cover of a burner with inwardly swirling flame from another angle according to an embodiment of the present invention;

[0041] Figure 12 Schematic diagram of the flame stabilizing ring of a burner with inwardly swirling flame according to an embodiment of the present invention.

[0042] In the figure:

[0043] 1. Burner head; 11. Burner head main body; 111. Protrusion; 1111. Protrusion through hole; 112. Inner ring groove; 1121. Inner ring groove through hole; 1122. Inner ring groove air supplement airway opening; 113. Inner fire channel; 114. Outer fire channel; 12. First injection pipe; 13. Second injection pipe; 2. Flame divider; 21. Flame divider through hole; 22. Secondary air supplement airway opening; 3. Flame stabilizing ring; 31. Shielding part; 4. Inner fire cover; 41. Inner fire cover main body; 42. Inner fire cover fire trough hole; 5. Outer fire cover; 51. Top wall; 52. Ring-shaped outer side wall; 53. Ring-shaped inner side wall; 6. Fire trough group; 61. Inwardly swirling fire trough hole; 7. Outer gas chamber; 8. Flame stabilizing groove. Detailed implementation manners

[0044] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0046] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0047] The following further describes the present invention in detail with reference to the accompanying drawings:

[0048] As Figures 1-3 shown, a burner with an internally swirling flame provided according to the present invention includes a burner head 1, a diffuser 2, a flame stabilizer ring 3, an inner burner cap 4, and an outer burner cap 5; the diffuser 2 and the inner burner cap 4 are both mounted on the burner head 1, and the inner gas chamber of the inner burner cap 4 is communicated with the inner fire passage 113 of the burner head 1; the outer burner cap 5 is a ring-shaped cavity structure with an open bottom formed by a top wall 51, a ring-shaped inner side wall 53, and a ring-shaped outer side wall 52. The bottom of the ring-shaped outer side wall 52 is nested on the top of the outer side wall of the diffuser 2, and the bottom of the ring-shaped inner side wall 53 is nested on the top of the inner side wall of the diffuser 2 through the flame stabilizer ring 3. The outer burner cap 5, the diffuser 2, and the flame stabilizer ring 3 are nested with each other to form an outer gas chamber 7, and the outer gas chamber 7 is communicated with the outer fire passage 114 of the burner head 1; a plurality of groups of fire trough groups 6 communicated with the outer gas chamber 7 are circumferentially distributed on the ring-shaped inner side wall 53, and each group of fire trough groups 6 can spray gas towards the center of the outer burner cap 5 to form an internally swirling long conical flame; a shielding portion 31 protrudes upward on the side of the flame stabilizer ring 3 away from the outer gas chamber 7, and the shielding portion 31 can shield the lower half of the gas outlet side of the fire trough group 6.

[0049] In this embodiment, by arranging multiple groups of fire trough groups 6 communicating with the outer gas chamber 7 in a circular distribution on the annular inner side wall 53 of the outer fire cap 5, and forming a shielding portion 31 protruding upward on the side of the flame stabilizing ring 3 away from the outer gas chamber 7, the lower half of the gas outlet side of the fire trough group 6 can be shielded by the shielding portion 31, so that the flames of the inner swirling fire trough holes 61 in each fire trough group 6 are superimposed to form a long conical flame.

[0050] Specifically:

[0051] As Figures 5-6 shown, in the above embodiment, preferably, the burner head 1 includes a burner head main body 11; an outer fire channel 114 and an inner fire channel 113 are provided inside the burner head main body 11, and a first ejector pipe 12 and a second ejector pipe 13 are provided outside the burner head main body 11. Among them, the first ejector pipe 12 communicates with the inner fire channel 113 to supply gas to the inner fire channel 113; the second ejector pipe 13 communicates with the outer fire channel 114 to supply gas to the outer fire channel 114; a plurality of fixing brackets are symmetrically arranged outside the burner head main body 11, and the plurality of fixing brackets can conveniently fix and install the burner head main body 11 on the gas stove.

[0052] In the above embodiment, preferably, a plurality of upwardly protruding portions 111 are annularly arranged on the top of the burner head main body 11. The number of the protruding portions 111 in the present invention is 4, and the 4 protruding portions 111 are evenly annularly distributed on the top of the burner head main body 11. The cross-sections of the 4 protruding portions are all fan-shaped. A protruding portion through hole 1111 communicating with the outer fire channel 114 is provided on each protruding portion 111. The protruding portion through hole 1111 is vertically arranged on the protruding portion 111, and the bottom of the protruding portion through hole 1111 communicates with the outer fire channel 114 inside the burner head 1.

[0053] In the above embodiment, preferably, an inner ring groove 112 is vertically provided upward at the central position of the top of the burner head main body 11. A plurality of inner fire trough through holes 1121 are vertically provided downward between the inner wall and the outer wall of the inner ring groove 112. Each inner fire trough through hole 1121 communicates with the inner fire channel 113 inside the burner head 1. An inner ring groove air supplement airway opening 1122 is provided between the inner wall and the outer wall of the inner ring groove 112 corresponding to two adjacent inner fire trough through holes 1121. The inner ring groove air supplement airway opening 1122 penetrates through the inner wall and the outer wall of the inner ring groove 112 in the horizontal direction; the inner fire cap 4 is nested and installed on the inner ring groove 112, and an inner gas chamber is formed between the inner ring groove 112 and the inner fire cap 4. The inner gas chamber communicates with the inner fire channel 113 inside the burner head 1 through a plurality of inner fire trough through holes 1121.

[0054] As Figures 7-8As shown in the above embodiments, preferably, the distributor 2 is in a ring-shaped structure. An outer ring groove of the distributor 2 is formed between the inner side wall and the outer side wall of the distributor 2. A plurality of distributor through holes 21 communicating with the through holes 1111 of the convex portions are annularly arranged on the outer ring groove of the distributor 2. The distributor through holes 21 are arranged in the vertical direction. A secondary air supply airway port 22 is provided on the side surface of the distributor 2 corresponding to the position between two adjacent distributor through holes 21. The secondary air supply airway port 22 penetrates through the outer side wall and the inner side wall of the distributor 2, and the secondary air supply airway port 22 is aligned with the inner ring groove air supply airway port 1122, so that external air can enter the central area of the outer burner cap 5 through a plurality of secondary air supply airway ports 22 and enter the central area of the inner burner cap 4 through a plurality of inner ring groove air supply airway ports 1122.

[0055] In the above embodiments, preferably, when the distributor 2 is installed on the burner head 1, the distributor 2 is nested on a plurality of convex portions 111 of the burner head 1, and a plurality of distributor through holes 21 in the distributor 2 communicate with the corresponding through holes 1111 of the convex portions. To ensure the reliable connection between the distributor 2 and the burner head 1, in this embodiment, the length of the inner side wall of the distributor 2 at the position corresponding to the distributor through hole 21 is lower than that of the outer side wall. After the distributor 2 is installed on the burner head 1, the outer side wall of the distributor 2 corresponding to the distributor through hole 21 is sleeved on the outside of the convex portion 111 of the burner head 1.

[0056] As Figure 9 shown in the above embodiments, preferably, the inner burner cap 4 includes an inner burner cap main body 41 and a plurality of inner burner cap slots 42. The inner burner cap main body 41 is a ring-shaped cavity structure with an open bottom. A plurality of inner burner cap slots 42 are evenly annularly arranged on the top of the inner burner cap main body 41, and a plurality of inner burner cap slots 42 can eject gas upward to form a flame in the vertical direction. During actual installation, the ring-shaped cavity structure inner burner cap main body 41 can be nested on the inner ring groove 112 to form an inner gas chamber, and the gas in the inner gas chamber can be discharged outward through a plurality of inner burner cap slots 42.

[0057] In the above embodiments, preferably, the installation height of the inner burner cap slots 42 is not higher than the installation height of the burner slot group 6 on the outer burner cap 5, so as to realize the upper and lower layered arrangement of the inner burner cap 4 and the outer burner cap 5.

[0058] As Figures 10-11 shown in the above embodiments, preferably, the outer end of the top wall 51 of the outer burner cap 5 is connected to the top of the ring-shaped outer side wall 52, and the outer end of the top wall 51 extends a certain distance beyond the top of the ring-shaped outer side wall 52 to form a clamping portion; the ring-shaped outer side wall 52 is nested inside the outer side wall of the distributor 2, and the lower part of the clamping portion is lapped on the top of the outer side wall of the distributor 2;

[0059] In the above embodiment, preferably, the inner end of the top wall 51 is connected to the top of the annular inner side wall 53, and the annular inner side wall 53 is an inner conical surface with a larger top diameter than its bottom diameter. A plurality of groups of fire groove groups 6 communicating with the outer gas chamber 7 are annularly arranged on the inner conical surface.

[0060] In the above embodiment, preferably, the bottom of the annular inner side wall 53 of the outer fire cap 5 is inclined upward in a stepped manner from one side close to the outer gas chamber 7 to the other side, and the bottom of the annular inner side wall 53 of the outer fire cap 5 on the side close to the outer gas chamber 7 is lower than the bottom of the annular inner side wall 53 on the side far from the outer gas chamber 7.

[0061] In the above embodiment, preferably, each group of fire groove groups 6 includes at least two inner swirling fire groove holes 61 extending upward from the bottom of the annular inner side wall 53. Among them, the multiple inner swirling fire groove holes 61 in each group of fire groove groups 6 are arranged in parallel, and each inner swirling fire groove hole 61 extends along the width direction of the annular inner side wall 53 to enable the gas in the outer gas chamber 7 to be sprayed to the center of the outer fire cap 5 through the inner swirling fire groove holes 61. In this embodiment, the number of inner swirling fire groove holes 61 in each group of fire groove groups 6 is preferably 2.

[0062] In the above embodiment, preferably, the multiple inner swirling fire groove holes 61 are arranged at intervals and are arranged in a clockwise or counterclockwise rotating inclination or spiral inclination in the bottom projection of the outer fire cap 5.

[0063] In the above embodiment, preferably, adjacent two groups of fire groove groups 6 are annularly arranged at uniform intervals, and an air clearance part can be formed between the adjacent two groups of fire groove groups 6 to sufficiently supplement the secondary air required for gas combustion.

[0064] As Figure 12 and Figure 4 shown, in the above embodiment, preferably, a convex strip is annularly arranged on the bottom of the flame stabilizing ring 3 on the side close to the outer gas chamber. The bottom of the flame stabilizing ring 3 is placed on the top of the inner side wall of the fuel divider 2, and the convex strip is nested inside the inner side wall of the fuel divider 2 close to the outer gas chamber 7; the shape of the top of the flame stabilizing ring 3 is adapted to the shape of the bottom of the annular inner side wall 53 of the outer fire cap 5, that is, the side of the top of the flame stabilizing ring 3 close to the outer gas chamber 7 is inclined upward in a stepped manner from one side to the other side to cooperate with the annular inner side wall 53, and the stepped part on the side of the top of the flame stabilizing ring 3 far from the outer gas chamber 7 constitutes a shielding part 31; the shielding part 31 can shield the lower half of the air outlet side of the fire groove group 6.

[0065] In the above embodiment, preferably, the side of the shielding part 31 close to the central area of the outer fire cap 1 is flush with the surface of the side of the annular inner side wall 53 close to the central area of the outer fire cap 1.

[0066] In the above embodiments, preferably, the bottom of the annular inner wall 53 is tightly and sealingly installed against the top of the flame stabilizing ring 3 on the side close to the outer gas chamber 7, and a gap is provided between the bottom of the annular inner wall 53 and the top of the flame stabilizing ring 3 on the side away from the outer gas chamber 7, that is, the shielding portion 31, to form a flame stabilizing groove 8, and the flame stabilizing groove 8 communicates with each group of flame grooves 6. The setting of the flame stabilizing groove 8 improves the flame transmission efficiency of the outer burner cover 5 and solves the problems of large air passage flow velocity and unstable flame at the air outlet of the sub-fire divider 2 near the burner head 1.

[0067] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A burner with inward swirling flame, characterized in that, It includes a burner head (1), a burner divider (2), a flame stabilizer ring (3), an inner burner cap (4) and an outer burner cap (5); The burner divider (2) and the inner burner cap (4) are both installed on the burner head (1), and the inner gas chamber of the inner burner cap (4) is communicated with the inner fire channel (113) of the burner head (1); The outer burner cap (5) is installed on the burner divider (2), and a flame stabilizer ring (3) is installed between one side of the outer burner cap (5) close to the center of the outer burner cap (5) and the burner divider (2). The outer burner cap (5), the burner divider (2) and the flame stabilizer ring (3) are nested with each other to form an outer gas chamber (7), and the outer gas chamber (7) is communicated with the outer fire channel (114) of the burner head (1); Multiple groups of fire trough groups (6) communicated with the outer gas chamber (7) are annularly distributed on the outer burner cap. Each group of the fire trough groups (6) can spray gas towards the center of the outer burner cap (5) to form an inward-rotating long conical flame; One side of the flame stabilizer ring (3) away from the outer gas chamber (7) protrudes upward to form a shielding part (31), and the shielding part (31) can shield the lower half of the gas outlet side of the fire trough group (6); The outer burner cap (5) is a ring-shaped cavity structure with an open bottom formed by a top wall (51), an annular inner side wall (53) and an annular outer side wall (52); A gap is annularly arranged between the shielding part (31) at the top of the flame stabilizer ring (3) and the annular inner side wall (53) to form a flame stabilizing groove (8); The inner burner cap (4) is a ring-shaped structure; A plurality of inner burner cap fire trough holes (42) are opened at the top of the inner burner cap (4), and the plurality of inner burner cap fire trough holes (42) can spray gas above the inner burner cap (4) to form a flame in the vertical direction.

2. The burner with inwardly swirling flame according to claim 1, characterized in that, The burner head (1) includes a burner head main body (11); The outer fire channel (114) and the inner fire channel (113) are arranged in the burner head main body (11). A first ejector pipe (12) communicated with the inner fire channel (113) and a second ejector pipe (13) communicated with the outer fire channel (114) are respectively arranged on the outer side of the burner head main body (11); A plurality of upwardly protruding parts (111) are annularly arranged at the top of the burner head main body (11). Each protruding part (111) is provided with a protruding part through hole (1111) communicated with the outer fire channel (114). The burner divider (2) is nested on the plurality of protruding parts (111), and the inside of the burner divider (2) is communicated with the plurality of protruding part through holes (1111); An inner ring groove (112) communicated with the inner fire channel (113) is arranged at the center position of the top of the burner head main body (11), and the inner burner cap (4) is nested above the inner ring groove (112).

3. The burner with inwardly swirling flame according to claim 2, characterized in that, A plurality of burner divider through holes (21) communicated with the protruding part through holes (1111) are annularly distributed inside the burner divider (2); A secondary air supply airway opening (22) is provided between the inner side wall and the outer side wall of the burner head (2) corresponding to two adjacent burner head through holes (21), and the secondary air supply airway opening (22) penetrates through the outer side wall and the inner side wall of the burner head (2); External air can enter the central area of the outer burner cap (5) through a plurality of the secondary air supply airway openings (22).

4. The burner with inwardly swirling flame according to claim 1, characterized in that, The installation height of the inner burner cap fire groove holes (42) is not higher than the installation height of the fire groove group (6) on the outer burner cap (5).

5. The burner with inwardly swirling flame according to claim 1, characterized in that, The outer end of the top wall (51) is connected to the top of the annular outer side wall (52), and the outer end of the top wall (51) extends a certain distance beyond the top of the annular outer side wall (52) to form a clamping portion; the annular outer side wall (52) is nested inside the outer side wall of the burner head (2), and the clamping portion is lapped on the top of the outer side wall of the burner head (2); The inner end of the top wall (51) is connected to the top of the annular inner side wall (53), and the annular inner side wall (53) is an inner conical surface with a larger top diameter than its bottom diameter, and multiple groups of the fire groove group (6) are annularly arranged on the inner conical surface.

6. The burner with inwardly swirling flame according to claim 5, characterized in that, A convex strip is annularly arranged on one side of the bottom of the flame stabilizing ring (3) close to the outer gas chamber (7), the flame stabilizing ring (3) is placed on the top of the inner side wall of the burner head (2), and the convex strip is nested inside the inner side wall of the burner head (2).

7. The burner with inwardly swirling flame according to claim 1, characterized in that, Each group of the fire groove group (6) includes at least two inner swirling fire groove holes (61) extending upward from the bottom of the annular inner side wall (53); A plurality of the inner swirling fire groove holes (61) in each group of the fire groove group (6) are arranged in parallel, and each inner swirling fire groove hole (61) extends along the width direction of the annular inner side wall (53).

8. The burner with inwardly swirling flame according to claim 7, characterized in that, The plurality of inner swirling fire groove holes (61) are arranged at intervals and are arranged in a clockwise or counterclockwise rotation and inclination in the bottom projection of the outer burner cap (5).

Images