CN220338459U - Burner with internal rotation flame - Google Patents

Abstract

The utility model discloses a burner with internal rotation of flame, which comprises a burner head, a distributor, a flame stabilizing ring, an inner flame cover and an outer flame cover; the distributor and the inner fire cover are both arranged on the furnace head, and an internal combustion air chamber of the inner fire cover is communicated with an internal fire channel of the furnace head; the outer fire cover is arranged on the distributor, a flame stabilizing ring is arranged between one side of the outer fire cover, which is close to the center of the outer fire cover, and the distributor, the flame stabilizing ring and the outer fire cover are mutually nested to form an outer gas chamber, and the outer gas chamber is communicated with an outer fire channel of the furnace end; the outer fire cover is annularly provided with a plurality of groups of fire groove groups communicated with the outer combustion chamber, and each group of fire groove groups can spray fuel gas to the center of the outer fire cover to form internal rotation long conical flame; one side of the flame stabilizing ring far away from the outer gas chamber is upwards protruded to form a shielding part, and the shielding part can shield the lower half part of the gas outlet side of the fire groove group. The utility model can meet the use requirement of the non-pan, and greatly reduces the risk of flame overflowing the secondary air gas port of the distributor to burn when the non-pan is used for cooking.

Description

Burner with internal rotation flame

Technical Field

The utility model relates to the technical field of kitchen stoves, in particular to a burner with internal rotation of flame.

Background

In order to achieve high energy efficiency, the internal rotation gas stove on the market generally controls the pot support to be at a lower height. When a user cooks with a non-pan, such as a sharp-bottomed pan or a round-bottomed pan, the internal rotation flame is concentrated, and the height of the pan support is low, so that the pan is relatively close to the burner, and insufficient gas combustion is caused. The insufficiently combusted fuel gas not only can cause the content of carbon monoxide in the dry flue gas to be increased, but also can be mixed with the air of the secondary air supplementing air port in the fire distributor, and after being ignited by flame on the fire cover, the insufficiently combusted fuel gas can be stably combusted at the secondary air supplementing air port of the fire distributor, so that the aging of parts such as a combustor, a liquid containing disc and the like is accelerated, and serious safety accidents are easily caused.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model provides a burner with internal rotation of flame.

The utility model discloses a burner with internal rotation of flame, which comprises a burner head, a distributor, a flame stabilizing ring, an inner flame cover and an outer flame cover;

the fire distributor and the inner fire cover are both arranged on the furnace head, and an inner combustion air chamber of the inner fire cover is communicated with an inner fire channel of the furnace end;

the outer fire cover is arranged on the distributor, a flame stabilizing ring is arranged between one side of the outer fire cover, which is close to the center of the outer fire cover, and the distributor, the outer fire cover, the distributor and the flame stabilizing ring are mutually nested to form an outer gas chamber, and the outer gas chamber is communicated with an outer fire channel of the furnace end;

a plurality of groups of fire groove groups communicated with the outer combustion chamber are annularly distributed on the outer fire cover, and each group of fire groove groups can spray fuel gas to the center of the outer fire cover to form an internal rotation long conical flame;

one side of the flame stabilizing ring, which is far away from the outer gas chamber, is upwards protruded to form a shielding part, and the shielding part can shield the lower half part of the gas outlet side of the fire groove group.

As a further improvement of the present utility model, the burner includes a burner main body;

the furnace end main body is internally provided with the outer fire channel and the inner fire channel, and the outer side of the furnace end main body is respectively provided with a first injection pipeline communicated with the inner fire channel and a second injection pipeline communicated with the outer fire channel;

the top of the furnace end main body is annularly provided with a plurality of protruding parts protruding upwards, each protruding part is provided with a protruding part through hole communicated with the external fire channel, the distributor is nested on the plurality of protruding parts, and the inside of the distributor is communicated with the plurality of protruding part through holes;

an inner ring groove communicated with the inner fire channel is arranged in the center of the top of the furnace end main body, and the inner fire cover is nested above the inner ring groove.

As a further improvement of the utility model, a plurality of distributor through holes communicated with the bulge through holes are distributed in the inner ring of the distributor;

a secondary air supplementing air port is arranged between the inner side wall of the distributor and the outer side wall of the distributor, which correspond to two adjacent distributor through holes, and penetrates through the outer side wall and the inner side wall of the distributor; external air may enter a central region of the outer fire cover through a plurality of the secondary air supplemental air passage ports.

As a further improvement of the utility model, the inner fire cover is of an annular structure;

the top of the inner fire cover is provided with a plurality of inner fire cover fire slots, and a plurality of inner fire cover fire slots can spray fuel gas above the inner fire cover to form flame in the vertical direction.

As a further improvement of the utility model, the arrangement height of the fire slot holes of the inner fire cover is not higher than the arrangement height of the fire slot groups on the outer fire cover.

As a further improvement of the utility model, the outer fire cover (5) is an annular cavity structure with an opening at the bottom, which is formed by a top wall (51), an annular inner side wall (53) and an annular outer side wall (52).

As a further improvement of the utility model, the outer end of the top wall is connected with the top of the annular outer side wall, and the outer end part of the top wall extends out of one end of the top of the annular outer side wall by a distance to form a clamping part; the annular outer side wall is nested in the outer side wall of the distributor, and the lower part of the clamping part is lapped on the top of the outer side wall of the distributor;

the inner end of the top wall is connected with the top of the annular inner side wall, the annular inner side wall is an inner conical surface with the top caliber larger than the bottom caliber, and a plurality of fire groove groups are annularly arranged on the inner conical surface.

As a further improvement of the utility model, a raised line is arranged on one side of the bottom of the flame stabilizing ring, which is close to the outer combustion chamber, and the flame stabilizing ring is arranged at the top of the inner side wall of the distributor, and the raised line is nested at the inner side of the inner side wall of the distributor;

a gap is arranged between the shielding part at the top of the flame stabilizing ring and the annular inner side wall in a ring mode to form a flame stabilizing groove.

As a further improvement of the utility model, each of said fire groove sets includes at least two internal rotation fire groove holes extending upward from the bottom of said annular inner sidewall;

and a plurality of internal rotation fire slotted holes in each fire slot group are arranged in parallel, and each internal rotation fire slotted hole extends along the width direction of the annular inner side wall.

As a further improvement of the utility model, a plurality of inner fire slotted holes are arranged at intervals, and the projections at the bottom of the outer fire cover are arranged in a clockwise or anticlockwise rotating and tilting mode.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the annular inner side wall of the outer fire cover is annularly provided with the plurality of fire groove groups communicated with the outer combustion chamber, so that flames of the inner rotary fire groove holes in each fire groove group can be overlapped to form long conical flames, and secondary air required by gas combustion can be sufficiently supplemented by the interval between two adjacent fire groove groups; compared with the conventional flame, the superimposed long conical flame has relatively divergent flame and lower overall height, can meet the use requirement of the non-pan, and greatly reduces the risk that the flame overflows the secondary air gas port of the distributor for combustion when the non-pan is used for cooking;

according to the utility model, the arrangement height of the fire slot holes of the inner fire cover is not higher than that of the fire slot groups on the outer fire cover, so that the inner fire cover and the outer fire cover are arranged in layers, more air is filled between the inner flame and the outer flame, combustion is more complete, and combustion efficiency is improved;

according to the utility model, the flame stabilizing ring is arranged between the outer flame cover and the distributor, and the gap is annularly arranged between the shielding part at the top of the flame stabilizing ring and the annular inner side wall to form the flame stabilizing groove, so that the flame transmission efficiency of the outer flame cover can be improved, and the problems of high flow velocity and unstable flame of the flame air passage of the distributor close to the gas outlet of the furnace end are solved.

Drawings

FIG. 1 is a schematic view of the general assembly of a burner with internal rotation of flame according to an embodiment of the present utility model;

FIG. 2 is a schematic view of another angular assembly of a burner with internal rotation of the flame according to an embodiment of the present utility model;

FIG. 3 is a side cross-sectional view of a burner with internal rotation of the flame in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic view of a flame stabilizing groove of a burner with internal rotation of flame according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a burner with internal rotation of flame according to an embodiment of the present utility model;

FIG. 6 is a schematic view showing the internal structure of a burner with internal rotation of flame according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a flame divider of a flame internal rotation burner according to an embodiment of the present utility model;

FIG. 8 is a schematic view of another angular distributor of a burner with internal rotation of the flame according to one embodiment of the present utility model;

FIG. 9 is a schematic view of the inner flame cover of a burner with internal rotation of flame according to an embodiment of the present utility model;

FIG. 10 is a schematic view of the outer flame cover of a burner with internal flame rotation according to an embodiment of the present utility model;

FIG. 11 is a schematic view of an alternative angle outer fire cover of a burner with internal flame rotation in accordance with an embodiment of the present utility model;

fig. 12 is a schematic view of a flame stabilizing ring of a burner with internal rotation of flame according to an embodiment of the present utility model.

In the figure:

1. a burner; 11. a burner main body; 111. a boss; 1111. a boss through hole; 112. an inner ring groove; 1121. an inner ring groove through hole; 1122. an air supplementing air passage opening of the inner ring groove; 113. an internal fire passage; 114. an external fire passage; 12. a first injection conduit; 13. a second injection conduit; 2. a fire divider; 21. a distributor through hole; 22. secondary air supplementing the air passage opening; 3. flame stabilizing ring; 31. a shielding part; 4. an inner fire cover; 41. an inner fire cover body; 42. the inner fire covers the fire slot; 5. an outer fire cover; 51. a top wall; 52. an annular outer sidewall; 53. an annular inner sidewall; 6. a fire trough group; 61. an internal rotation fire slot; 7. an outer combustion chamber; 8. a flame stabilizing groove.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model is described in further detail below with reference to the attached drawing figures:

as shown in fig. 1 to 3, the burner with internal rotation of flame provided by the utility model comprises a burner head 1, a distributor 2, a flame stabilizing ring 3, an inner fire cover 4 and an outer fire cover 5; the distributor 2 and the inner fire cover 4 are both arranged on the furnace end 1, and an internal combustion air chamber of the inner fire cover 4 is communicated with an inner fire channel 113 of the furnace end 1; the outer fire cover 5 is an annular cavity structure with an opening bottom and composed of a top wall 51, an annular inner side wall 53 and an annular outer side wall 52, the bottom of the annular outer side wall 52 is nested at the top of the outer side wall of the distributor 2, the bottom of the annular inner side wall 53 is nested at the top of the inner side wall of the distributor 2 through a flame stabilizing ring 3, the outer fire cover 5, the distributor 2 and the flame stabilizing ring 3 are nested with each other to form an outer gas chamber 7, and the outer gas chamber 7 is communicated with an outer fire channel 114 of the furnace end 1; a plurality of groups of fire groove groups 6 communicated with the outer combustion chamber 7 are annularly distributed on the annular inner side wall 53, and each group of fire groove groups 6 can spray fuel gas to the center of the outer fire cover 5 to form an internal rotation long conical flame; the side of the flame stabilizing ring 3 far away from the outer gas chamber 7 is upwards protruded to form a shielding part 31, and the shielding part 31 can shield the lower half part of the gas outlet side of the fire groove group 6.

In this embodiment, a plurality of groups of flame groove groups 6 communicated with the outer gas chamber 7 are annularly distributed on the annular inner side wall 53 of the outer flame cover 5, a shielding part 31 is formed by protruding upwards on one side of the flame stabilizing ring 3 far away from the outer gas chamber 7, and the lower half part of the gas outlet side of the flame groove groups 6 can be shielded by the shielding part 31, so that the flames of the inner rotary flame groove holes 61 in each group of flame groove groups 6 are overlapped to form long conical flames.

Specific:

as shown in fig. 5 to 6, in the above embodiment, preferably, the burner 1 includes a burner main body 11; an outer fire channel 114 and an inner fire channel 113 are arranged in the furnace end main body 11, a first injection pipeline 12 and a second injection pipeline 13 are arranged on the outer side of the furnace end main body 11, and the first injection pipeline 12 is communicated with the inner fire channel 113 so as to convey fuel gas into the inner fire channel 113; the second injection pipeline 13 is communicated with the external fire channel 114 so as to convey fuel gas in the external fire channel 114; a plurality of fixing brackets are symmetrically arranged on the outer side of the burner main body 11, and the burner main body 11 can be conveniently and fixedly arranged on the gas stove by the fixing brackets.

In the above embodiment, preferably, the top of the burner main body 11 is annularly provided with a plurality of protruding parts 111 protruding upwards, the number of protruding parts 111 in the utility model is 4, the 4 protruding parts 111 are evenly distributed around the top of the burner main body 11, the cross sections of the 4 protruding parts are all fan-shaped, each protruding part 111 is provided with a protruding part through hole 1111 communicated with the external fire channel 114, the protruding part through holes 1111 are vertically arranged on the protruding part 111, and the bottom of the protruding part through hole 1111 is communicated with the external fire channel 114 inside the burner 1.

In the above embodiment, preferably, the top center position of the burner main body 11 is vertically provided with the inner ring groove 112 upwards, a plurality of inner fire groove through holes 1121 are vertically provided downwards between the inner wall and the outer wall of the inner ring groove 112, each inner fire groove through hole 1121 is communicated with the inner fire channel 113 inside the burner 1, an inner ring groove air supplementing air passage 1122 is provided between the inner wall and the outer wall of the inner ring groove 112 corresponding to the two adjacent inner fire groove through holes 1121, and the inner ring groove air supplementing air passage 1122 penetrates through the inner wall and the outer wall of the inner ring groove 112 along the horizontal direction; the inner fire cover 4 is nested and installed on the inner ring groove 112, and an inner combustion air chamber is formed between the inner ring groove 112 and the inner fire cover 4 and is communicated with an inner fire channel 113 inside the burner 1 through a plurality of inner fire groove through holes 1121.

As shown in fig. 7 to 8, in the above embodiment, preferably, the distributor 2 is in a ring structure, an outer ring groove of the distributor is formed between the inner side wall and the outer side wall of the distributor 2, a plurality of distributor through holes 21 communicated with the boss through holes 1111 are annularly distributed on the outer ring groove of the distributor, the distributor through holes 21 are vertically arranged, a secondary air supplementing air passage 22 is arranged between two adjacent distributor through holes 21 corresponding to the side surface of the distributor 2, the secondary air supplementing air passage 22 penetrates through the outer side wall and the inner side wall of the distributor 2, and the secondary air supplementing air passage 22 is aligned with the inner ring groove air supplementing air passage 1122, so that external air can enter the central area of the outer fire cover 5 through the plurality of secondary air supplementing air passages 22 and enter the central area of the inner fire cover 4 through the plurality of inner ring groove air supplementing air passages 1122.

In the above embodiment, preferably, when the distributor 2 is installed on the burner 1, the distributor 2 is nested and installed on the plurality of bosses 111 of the burner 1, and the plurality of distributor through holes 21 in the distributor 2 are communicated with the corresponding boss through holes 1111, so as to ensure that the distributor 2 is reliably connected with the burner 1, in this embodiment, the inner side wall of the distributor 2 corresponding to the position of the distributor through hole 21 is lower than the outer side wall, and after the distributor 2 is installed on the burner 1, the outer side wall of the distributor 2 corresponding to the distributor through hole 21 is sleeved outside the boss 111 of the burner 1.

As shown in fig. 9, in the above embodiment, preferably, the inner fire cover 4 includes an inner fire cover main body 41 and a plurality of inner fire groove fire slots 42, wherein the inner fire cover main body 41 is an annular cavity structure with an opening at the bottom, the plurality of inner fire groove fire slots 42 are uniformly distributed on the top of the inner fire cover 41 main body, and the plurality of inner fire cover fire slots 42 can spray fuel gas above the inner fire cover 4 to form a flame in a vertical direction. In actual installation, the inner fire cover body 41 with an annular cavity structure can be nested on the inner ring groove 112 to form an inner combustion air chamber, and the fuel gas in the inner combustion air chamber can be discharged outwards through the plurality of inner fire groove holes 42.

In the above embodiment, it is preferable that the arrangement height of the inner fire cover fire slots 42 is not higher than the arrangement height of the fire slot groups 6 on the outer fire cover 5 to achieve the upper and lower layered arrangement of the inner fire cover 4 and the outer fire cover 5

As shown in fig. 10 to 11, in the above embodiment, preferably, the outer end of the top wall 51 of the outer fire cover 5 is connected to the top of the annular outer side wall 52, and the outer end portion of the top wall 51 extends out of the top end of the annular outer side wall 52 by a distance to form a snap-fit portion; the annular outer side wall 52 is nested inside the outer side wall of the distributor 2, and the lower part of the clamping part is lapped on the top of the outer side wall of the distributor 2;

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 top caliber larger than a bottom caliber thereof, and a plurality of groups of fire groove groups 6 communicated with the outer combustion chamber 7 are annularly arranged on the inner conical surface.

In the above embodiment, it is preferable that the bottom of the annular inner side wall 53 of the outer fire cover 5 is provided in a stepwise manner obliquely upward from one side of the annular inner side wall 53 near the outer gas chamber 7 to the other side, and the bottom of the side of the annular inner side wall 53 of the outer fire cover 5 near the outer gas chamber 7 is lower than the bottom of the side of the annular inner side wall 53 away from the outer gas chamber 7.

In the above embodiment, it is preferable that each of the fire groove groups 6 includes at least two inner fire groove holes 61 extending upward from the bottom of the annular inner side wall 53, wherein a plurality of the inner fire groove holes 61 in each of the fire groove groups 6 are arranged in parallel, and each of the inner fire groove holes 61 extends in the width direction of the annular inner side wall 53 so as to satisfy that the gas located in the outer gas chamber 7 is injected to the center of the outer fire cover 5 through the inner fire groove holes 61. The number of the inner rotary flame groove holes 61 in each flame groove group 6 in this embodiment is preferably 2.

In the above embodiment, it is preferable that the plurality of inner fire slots 61 are arranged at intervals and are arranged in a clockwise or counterclockwise rotation inclination or spiral inclination on the bottom projection of the outer fire cover 5.

In the above embodiment, preferably, the adjacent two fire groove groups 6 are uniformly distributed in a ring, so that a space avoiding part can be formed between the adjacent two fire groove groups 6, and secondary air required by gas combustion can be sufficiently supplemented.

As shown in fig. 12 and 4, in the above embodiment, preferably, a raised line is looped on one side of the bottom of the flame stabilizing ring 3 near the outer gas chamber, the bottom of the flame stabilizing ring 3 is disposed on the top of the inner side wall of the distributor 2, and the raised line is nested on the inner side wall of the distributor 2 near the inner side of the outer gas chamber 7; the shape of the top of the flame stabilizing ring 3 is matched with the shape of the bottom of the annular inner side wall 53 of the outer flame cover 5, namely, one side of the top of the flame stabilizing ring 3 close to the outer gas chamber 7 is obliquely upwards arranged in a step shape from the other side to be matched with the annular inner side wall 53, and a step part of one side of the top of the flame stabilizing ring 3 far away from the outer gas chamber 7 forms a shielding part 31; the shielding portion 31 may shield the lower half of the air outlet side of the fire groove group 6.

In the above embodiment, it is preferable that the side of the shielding portion 31 near the center region of the outer fire cover 1 is flush with the surface of the annular inner side wall 53 near the center region of the outer fire cover 1.

In the above embodiment, preferably, the bottom of the annular inner sidewall 53 and the top of the flame holding ring 3 are tightly and hermetically mounted on the side close to the outer gas chamber 7, a gap is formed between the bottom of the annular inner sidewall 53 and the top of the flame holding ring 3 on the side far from the outer gas chamber 7, i.e., the shielding portion 31, to form the flame holding groove 8, and the flame holding groove 8 is communicated with each group of flame holding groove groups 6. The arrangement of the flame stabilizing groove 8 improves the flame transmission efficiency of the outer flame cover 5, and solves the problems of large flow speed and unstable flame of the air passage of the flame at the position of the distributor 2 close to the air outlet of the furnace end 1.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The burner with internal rotation of flame is characterized by comprising a burner head (1), a distributor (2), a flame stabilizing ring (3), an inner flame cover (4) and an outer flame cover (5);

the fire distributor (2) and the inner fire cover (4) are both arranged on the furnace end (1), and an internal combustion air chamber of the inner fire cover (4) is communicated with an inner fire channel (113) of the furnace end (1);

the outer fire cover (5) is arranged on the distributor (2), a flame stabilizing ring (3) is arranged between one side, close to the center of the outer fire cover (5), of the outer fire cover (5) and the distributor (2), the outer fire cover (5), the distributor (2) and the flame stabilizing ring (3) are mutually nested to form an outer gas chamber (7), and the outer gas chamber (7) is communicated with an outer fire channel (114) of the furnace end (1);

a plurality of groups of fire groove groups (6) communicated with the outer combustion chamber (7) are annularly distributed on the outer fire cover, and each group of fire groove groups (6) can spray fuel gas to the center of the outer fire cover (5) to form an internal rotation long conical flame;

one side of the flame stabilizing ring (3) far away from the outer gas chamber (7) is upwards protruded to form a shielding part (31), and the shielding part (31) can shield the lower half part of the gas outlet side of the fire groove group (6).

2. Burner with internal rotation of flame according to claim 1, characterized in that said burner (1) comprises a burner body (11);

the furnace end main body (11) is internally provided with the external fire channel (114) and the internal fire channel (113), and the outer side of the furnace end main body (11) is respectively provided with a first injection pipeline (12) communicated with the internal fire channel (113) and a second injection pipeline (13) communicated with the external fire channel (114);

a plurality of protruding parts (111) protruding upwards are annularly arranged at the top of the furnace end main body (11), each protruding part (111) is provided with a protruding part through hole (1111) communicated with the external fire channel (114), the distributor (2) is nested on the plurality of protruding parts (111), and the inside of the distributor (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 of the top of the furnace end main body (11), and the inner fire cover (4) is nested above the inner ring groove (112).

3. Burner with internal rotation of flame according to claim 2, characterized in that the internal annulus of the distributor (2) is provided with a plurality of distributor through holes (21) communicating with the boss through holes (1111);

a secondary air supplementing air port (22) is arranged between two corresponding adjacent distributor through holes (21) of the inner side wall of the distributor (2) and the outer side wall of the distributor (2), and the secondary air supplementing air port (22) penetrates through the outer side wall and the inner side wall of the distributor (2);

external air can enter the central area of the outer fire cover (5) through a plurality of secondary air supplementing air ports (22).

4. Burner with internal rotation of flame according to claim 2, characterized in that the inner flame cover (4) is of annular structure;

a plurality of inner fire cover fire slots (42) are formed in the top of the inner fire cover (4), and the inner fire cover fire slots (42) can spray fuel gas above the inner fire cover (4) to form flame in the vertical direction.

5. Burner with internal rotation of flame according to claim 4, characterized in that the setting height of the inner flame cover flame slots (42) is not higher than the setting height of the flame slot groups (6) on the outer flame cover (5).

6. Burner with internal rotation of flame according to claim 1, characterized in that the outer flame cover (5) is an open-bottomed annular cavity structure consisting of a top wall (51), an annular inner side wall (53) and an annular outer side wall (52).

7. The burner of the internal rotation of flame according to claim 6, characterized in that the outer end of the top wall (51) is connected with the top of the annular outer side wall (52), and the outer end of the top wall (51) extends beyond the top end of the annular outer side wall (52) by a distance to form a clamping portion; the annular outer side wall (52) is nested in the outer side wall of the distributor (2), and the lower part of the clamping part is lapped on the top of the outer side wall of the distributor (2);

the inner end of the top wall (51) is connected with the top of the annular inner side wall (53), the annular inner side wall (53) is an inner conical surface with the top caliber larger than the bottom caliber, and a plurality of groups of fire groove groups (6) are annularly arranged on the inner conical surface.

8. The burner with internal rotation of flame according to claim 7, characterized in that a raised strip is annularly arranged at one side of the bottom of the flame stabilizing ring (3) close to the outer combustion chamber (7), the flame stabilizing ring (3) is arranged at the top of the inner side wall of the distributor (2), and the raised strip is nested at the inner side of the inner side wall of the distributor (2);

a gap is formed between the shielding part (31) at the top of the flame stabilizing ring (3) and the annular inner side wall (53) in a surrounding manner so as to form a flame stabilizing groove (8).

9. The burner of internal rotation of flames according to claim 6, wherein each of said groups of flame slots (6) comprises at least two internal rotation flame slots (61) extending upwards from the bottom of said annular inner side wall (53);

a plurality of internal rotation fire slotted holes (61) in each fire slot group (6) are arranged in parallel, and each internal rotation fire slotted hole (61) extends along the width direction of the annular inner side wall (53).

10. Burner with internal rotation of flame according to claim 9, characterized in that a plurality of said internal rotation flame slots (61) are arranged at intervals and are arranged with a clockwise or anticlockwise rotation inclination in the bottom projection of said external flame cover (5).