阅读说明：本技术 一种燃烧器 (A kind of burner ) 是由 程志刚 王元聪 徐洪辉 于 2019-11-18 设计创作，主要内容包括：本发明公开了一种燃烧器,在底座固定有至少两个外环燃气引射喷头；在底环座上设置两个对应的独立下凹腔及外环燃气混合腔,在每个独立下凹腔的外侧壁中部设有管道孔,外环燃气引射喷头对准在管道孔上；在每个独立下凹腔的内侧壁均固定有一个内镶嵌件；在内凸环壁的外壁面套有内环件,内环件的顶部延伸有环形凸檐,环形凸檐遮盖了部分外环燃气混合腔及遮盖了独立下凹腔的中部,未遮盖独立下凹腔的两端形成有上气孔,燃气进入独立下凹腔后分布至外环燃气混合腔,外环燃气混合腔的燃气通过限流通道进入环绕混合腔,最后在顶部的外环火孔组喷出燃烧；本产品通过至少设置两个独立下凹腔将燃气在外环燃气混合腔内分布更加饱满、均匀,燃烧火力分布均匀。(The invention discloses a burner.A base is fixed with at least two outer ring gas injection nozzles; the bottom ring seat is provided with two corresponding independent lower concave cavities and an outer ring gas mixing cavity, the middle part of the outer side wall of each independent lower concave cavity is provided with a pipeline hole, and the outer ring gas injection nozzle is aligned to the pipeline hole; an embedded insert is fixed on the inner side wall of each independent lower concave cavity; the outer wall surface of the inner convex ring wall is sleeved with an inner ring piece, the top of the inner ring piece extends to form an annular convex brim, the annular convex brim covers part of the outer ring gas mixing cavity and covers the middle part of the independent lower concave cavity, upper gas holes are formed at two ends which do not cover the independent lower concave cavity, gas enters the independent lower concave cavity and then is distributed to the outer ring gas mixing cavity, the gas in the outer ring gas mixing cavity enters the surrounding mixing cavity through a flow limiting channel, and finally the gas is sprayed and combusted at the outer ring fire hole group at the top; this product distributes more fully, evenly with the gas in outer ring gas mixing chamber through setting up two independent cavities down at least, and the firepower that burns distributes evenly.)

1. A combustor, including base, ignition needle, its characterized in that: at least two outer ring gas injection nozzles are fixed on the base; a bottom ring seat is fixed on the base, and a central burner is fixed in the middle of the bottom ring seat;

the top of the bottom ring seat is provided with an outward convex ring wall and an inward convex ring wall which extend upwards, a surrounding central upper air hole is formed between the outer ring wall and the inward convex ring wall of the central combustor, an annular outer ring gas mixing cavity is formed between the outward convex ring wall and the inward convex ring wall, the outer ring gas mixing cavity is provided with at least two independent lower concave cavities, and each independent lower concave cavity comprises an inner side wall, an outer side wall and a cavity bottom wall; a gas guide wall is arranged between the cavity bottom wall of the independent lower concave cavity and the outer convex annular wall; the inner side wall comprises an arc-shaped inner side wall in the middle and plane inner side walls at two ends;

a semi-circle-off boss is formed between the outer side wall of the independent lower concave cavity and the outer convex ring wall, and the outer side wall is arranged on the inner side of the semi-circle-off boss;

a bottom ring wall of the outer ring gas mixing cavity is formed between the plane inner side walls at two ends of two adjacent independent lower cavities, the bottom ring wall and the semi-circle-deficient boss are the remaining parts of the bottom wall of the outer ring gas mixing cavity which are not recessed, and the bottom ring wall and the semi-circle-deficient boss are convex relative to the independent lower cavities;

the middle part of the outer side wall of each independent lower concave cavity is provided with a pipeline hole vertical to the outer side wall, the outer ring gas injection nozzle is aligned to an outer orifice of the pipeline hole, and an air inlet gap is formed between the outer orifice of the pipeline hole and the outer ring gas injection nozzle;

an embedded insert is fixed on the inner side wall of each independent lower concave cavity, and an annular gas diversion throat part and an annular gas expansion part are formed between the embedded insert and the outer side wall of the inner orifice of the pipeline hole along the periphery;

the outer wall surface of the inner convex ring wall is sleeved with an inner ring piece, the inner ring piece is integrally arranged in the outer ring gas mixing cavity, the outer wall of the top of the inner ring piece transversely extends outwards to form an annular convex brim, the annular convex brim covers part of the outer ring gas mixing cavity and also covers the middle part of the independent lower concave cavity, and upper air holes are formed at two ends of the independent lower concave cavity which are not covered;

an outer ring fire cover is fixedly connected between the outer convex ring wall and the inner convex ring wall together, the outer ring fire cover is integrally formed, the outer ring fire cover comprises a top ring wall, the outer side of the top ring wall extends downwards to form a fire cover outer ring wall, the inner side of the top ring wall extends downwards to form a fire cover inner ring wall, a surrounding mixing cavity is formed between the fire cover outer ring wall and the fire cover inner ring wall, an outer ring fire hole group is arranged on the top ring wall, and the outer ring fire hole group is communicated with the surrounding mixing cavity; the outer ring wall of the fire cover is fixedly connected with the outer convex ring wall, and the inner ring wall of the fire cover is fixedly connected with the inner convex ring wall;

a flow limiting channel is formed between the edge of the annular convex brim and the top ring wall of the fire cover;

the gas enters the annular gas expansion part through the annular gas diversion throat part through the outer ring gas injection nozzle and the pipeline hole injection, then is fully distributed with the whole independent lower concave cavity, then is distributed to the outer ring gas mixing cavity through the independent lower concave cavity, the gas in the outer ring gas mixing cavity enters the surrounding mixing cavity through the flow limiting channel, and finally is sprayed out and combusted in the outer ring fire hole group at the top;

a gas flow-limiting gap is formed between the top of the semi-semicircular boss and the annular convex brim;

the opposite reverse side of the independent lower concave cavity is provided with a raised part, and the adjacent two raised parts and the bottom ring wall form a transverse air inlet gap part; the base is connected with the bottom ring base, then the air inlet gap portion becomes an air inlet hole, and external air enters from the air inlet hole and then rises from the central upper air hole to supplement oxygen for central combustion and outer ring combustion.

2. A burner as claimed in claim, wherein: the embedded inserts are fixedly connected to the bottom of the inner ring piece, an installation gap part is formed between the bottom of the inner ring piece and two adjacent embedded inserts, and when the embedded inserts are embedded into the independent lower concave cavity, the bottom of the inner ring piece with the installation gap part is fixedly connected with the inner side of the bottom ring wall;

the outer wall surface of the embedded insert is a conical outer wall surface, a flat circular plane is arranged in the middle of the conical outer wall surface, and the circular plane is concentrically aligned with the pipeline hole and is parallel to the wall surface of the outer side wall; an annular gas diversion throat part is formed between the circular plane and the wall surface of the outer side wall, and a conical gas expansion part is formed between the conical outer wall surface and the wall surface of the outer side wall; the gas guide wall of the independent lower concave cavity is arc-shaped; the protruding bellying that has along the middle part in the top of half semicircle boss, be formed with the gas between bellying and the evagination rampart and assemble the groove, be formed with gas current-limiting clearance between the top of bellying and the protruding eaves of annular.

3. A burner as claimed in claim, wherein: the inner ring piece comprises an inner convex ring wall, an outer convex ring wall and a bottom ring wall, and a surrounding groove is formed among the inner convex ring wall, the outer convex ring wall and the bottom ring wall; an annular convex brim extends from the outer side of the top of the outer convex ring wall; the inner side convex ring wall is sleeved on the outer wall surface of the inner convex ring wall.

4. A burner as claimed in claim, wherein: and gas wind-shielding sheets are fixed on two sides of the outer hole opening of the pipeline hole on the reverse side of the bottom ring seat, and positioning bayonets are arranged between the gas wind-shielding sheets on the two sides.

5. A burner as claimed in claim, wherein: the central burner comprises a central fire cover I, a central fire cover II, a double-layer gas mixing head and two central gas injection pipes; the double-layer gas mixing head comprises an outer annular wall, an inner annular wall and an annular bottom wall, an annular outer gas mixing cavity is arranged between the outer annular wall and the inner annular wall, and an inner gas mixing cavity is arranged at the center of the inner annular wall; the top of the first central fire cover is provided with a central combustion fire distribution hole group; the side wall of the central fire cover II is provided with a central side combustion fire distribution hole group, and a hollow short pipe extends downwards from the middle; the first central fire cover is stacked on the second central fire cover and fixedly connected with the second central fire cover; the outer wall of the central fire cover II is fixedly connected to the top of the corresponding outer ring wall, the hollow short pipe is inserted into the inner ring wall and is communicated with the inner gas mixing cavity, and the outer gas mixing cavity is communicated with the central side combustion fire distributing hole group; two central gas injection pipes are fixed at the outer bottom of the bottom ring seat and are respectively arranged at the two air inlet gap parts, one of the two central gas injection pipes is communicated with the inner gas mixing cavity, and the other central gas injection pipe is communicated with the outer gas mixing cavity.

6. A burner as claimed in claim, wherein: the two central gas injection pipes comprise a first gas injection pipe and a second gas injection pipe, the inner gas mixing cavity is communicated with the first gas injection pipe, and the outer gas mixing cavity is communicated with the second gas injection pipe; the central side combustion fire distribution hole group, the outer gas mixing cavity and the gas injection pipe II are communicated; the right-center combustion fire distribution hole group, the hollow short pipe, the internal combustion gas mixing cavity and the gas injection pipe I are communicated; the first gas injection pipe and the second gas injection pipe are fixed on the reverse side of the bottom ring seat, and part of pipe sections and injection orifices of the first gas injection pipe and the second gas injection pipe are arranged at the air inlet gap parts of the first gas injection pipe and the second gas injection pipe; a first central combustion injection nozzle and a second central combustion injection nozzle are fixed on the base; the first central combustion injection nozzle is aligned to an injection orifice of the first gas injection pipe, and an air supplement surrounding gap is formed between the injection orifice and the first central combustion injection nozzle; the second central combustion injection nozzle is aligned to an injection orifice of the second gas injection pipe, and an air supplement surrounding gap is formed between the injection orifice and the second central combustion injection nozzle.

7. A burner as claimed in claim, wherein: the middle of the air inlet gap part of the injection orifices of the first gas injection pipe and the second gas injection pipe extends downwards to form a gas windshield sheet with the left side, the right side and the rear side connected with each other, and the gas windshield sheet semi-surrounds the central combustion injection nozzle; a Venturi tube is concealed and fixed in the first gas injection tube and the second gas injection tube; a positioning bayonet is arranged between the left wall and the right wall of the gas windshield sheet; and positioning columns are fixed on the tops of the first central combustion injection nozzle and the second central combustion injection nozzle, and the positioning columns are inserted into the positioning bayonets for positioning after the base is connected with the bottom ring seat.

8. A burner as claimed in claim, wherein: the first gas injection pipe and the second gas injection pipe are arranged with the corresponding first central combustion injection nozzle and the second central combustion injection nozzle in an inclined manner, the inclined angles are consistent, and the inclined angle is any degree between 5 and 20 degrees; the first central combustion injection nozzle and the second central combustion injection nozzle respectively comprise a central nozzle seat and a central gas injection nozzle, a central gas input channel is arranged in the central nozzle seat, the central gas injection nozzle is fixedly connected to the outlet of the central gas input channel, and the inlet of the central gas input channel is used for a gas pipe to be connected with input gas; the central nozzle seat of the first central combustion injection nozzle is connected with a central gas inlet pipe.

9. A burner as claimed in claim, wherein: the outer ring gas injection nozzle comprises an outer ring nozzle seat and an outer ring gas injection nozzle, an outer ring gas input channel is arranged in the outer ring nozzle seat, the outer ring gas injection nozzle is fixedly connected to the outlet of the outer ring gas input channel, the inlet of the outer ring gas input channel is fixedly connected with an outer ring gas inlet pipe, and the two outer ring gas injection nozzles are connected and communicated through the outer ring gas inlet pipe; the outer ring gas injection nozzles are arranged in an upward inclining manner; the pipeline holes are arranged in an upward inclination mode, the upward inclination angle of the pipeline holes is consistent with that of the outer ring gas injection nozzle, and the upward inclination angle is any degree between 5 degrees and 20 degrees; the top of outer loop gas injection shower nozzle is fixed with the reference column, and the reference column inserts and fixes a position on the location bayonet socket after base and bottom ring seat are connected.

10. A burner as claimed in claim, wherein: a flame monitoring needle and an ignition needle are longitudinally fixed in the middle of the base in a penetrating manner; the outer annular wall of the double-layer gas mixing head extends to form an annular flange, a flame monitoring needle positioning semicircular notch and an ignition needle positioning semicircular notch are formed in the annular flange, and the flame monitoring needle positioning semicircular notch and the ignition needle positioning semicircular notch correspond to the flame monitoring needle and the ignition needle one to one.

Technical Field

The invention relates to a device of a small household appliance gas furnace, in particular to a burner.

Background

The outer ring of the existing gas furnace burning furnace end is only connected with an air inlet pipe and is connected to the bottom of one side of the furnace end, gas enters an outer ring mixing chamber and then flows around through the gas pressure of the gas, the gas rises after entering the outer ring mixing chamber, the head and tail gas pressure of the outer ring mixing chamber is inconsistent, the flame height of a burning ring surface is inconsistent, and the fire power distribution is uneven.

Disclosure of Invention

In order to solve the technical problem, the invention provides the combustor which is reasonable in structure, at least the outer ring is provided with double air inlets, and the outer ring can be uniformly distributed for gas combustion.

The technical scheme for solving the technical problems is as follows:

a combustor, including base, ignition needle, its characterized in that: at least two outer ring gas injection nozzles are fixed on the base; a bottom ring seat is fixed on the base, and a central burner is fixed in the middle of the bottom ring seat; the top of the bottom ring seat is provided with an outward convex ring wall and an inward convex ring wall which extend upwards, a surrounding central upper air hole is formed between the outer ring wall and the inward convex ring wall of the central combustor, an annular outer ring gas mixing cavity is formed between the outward convex ring wall and the inward convex ring wall, the outer ring gas mixing cavity is provided with at least two independent lower concave cavities, and each independent lower concave cavity comprises an inner side wall, an outer side wall and a cavity bottom wall; a gas guide wall is arranged between the cavity bottom wall of the independent lower concave cavity and the outer convex annular wall; the inner side wall comprises an arc-shaped inner side wall in the middle and plane inner side walls at two ends; a semi-circle-off boss is formed between the outer side wall of the independent lower concave cavity and the outer convex ring wall, and the outer side wall is arranged on the inner side of the semi-circle-off boss; a bottom ring wall of the outer ring gas mixing cavity is formed between the plane inner side walls at two ends of two adjacent independent lower cavities, the bottom ring wall and the semi-circle-deficient boss are the remaining parts of the bottom wall of the outer ring gas mixing cavity which are not recessed, and the bottom ring wall and the semi-circle-deficient boss are convex relative to the independent lower cavities; the middle part of the outer side wall of each independent lower concave cavity is provided with a pipeline hole vertical to the outer side wall, the outer ring gas injection nozzle is aligned to an outer orifice of the pipeline hole, and an air inlet gap is formed between the outer orifice of the pipeline hole and the outer ring gas injection nozzle; an embedded insert is fixed on the inner side wall of each independent lower concave cavity, and an annular gas diversion throat part and an annular gas expansion part are formed between the embedded insert and the outer side wall of the inner orifice of the pipeline hole along the periphery; the outer wall surface of the inner convex ring wall is sleeved with an inner ring piece, the inner ring piece is integrally arranged in the outer ring gas mixing cavity, the outer wall of the top of the inner ring piece transversely extends outwards to form an annular convex brim, the annular convex brim covers part of the outer ring gas mixing cavity and also covers the middle part of the independent lower concave cavity, and upper air holes are formed at two ends of the independent lower concave cavity which are not covered; an outer ring fire cover is fixedly connected between the outer convex ring wall and the inner convex ring wall together, the outer ring fire cover is integrally formed, the outer ring fire cover comprises a top ring wall, the outer side of the top ring wall extends downwards to form a fire cover outer ring wall, the inner side of the top ring wall extends downwards to form a fire cover inner ring wall, a surrounding mixing cavity is formed between the fire cover outer ring wall and the fire cover inner ring wall, an outer ring fire hole group is arranged on the top ring wall, and the outer ring fire hole group is communicated with the surrounding mixing cavity; the outer ring wall of the fire cover is fixedly connected with the outer convex ring wall, and the inner ring wall of the fire cover is fixedly connected with the inner convex ring wall; a flow limiting channel is formed between the edge of the annular convex brim and the top ring wall of the fire cover; the gas enters the annular gas expansion part through the annular gas diversion throat part through the outer ring gas injection nozzle and the pipeline hole injection, then is fully distributed with the whole independent lower concave cavity, then is distributed to the outer ring gas mixing cavity through the independent lower concave cavity, the gas in the outer ring gas mixing cavity enters the surrounding mixing cavity through the flow limiting channel, and finally is sprayed out and combusted in the outer ring fire hole group at the top; a gas flow-limiting gap is formed between the top of the semi-semicircular boss and the annular convex brim; the opposite reverse side of the independent lower concave cavity is provided with a raised part, and the adjacent two raised parts and the bottom ring wall form a transverse air inlet gap part; the base is connected with the bottom ring base, then the air inlet gap portion becomes an air inlet hole, and external air enters from the air inlet hole and then rises from the central upper air hole to supplement oxygen for central combustion and outer ring combustion.

The preferable technical scheme is further as follows: the embedded inserts are fixedly connected to the bottom of the inner ring piece, an installation gap part is formed between the bottom of the inner ring piece and two adjacent embedded inserts, and when the embedded inserts are embedded into the independent lower concave cavity, the bottom of the inner ring piece with the installation gap part is fixedly connected with the inner side of the bottom ring wall; the outer wall surface of the embedded insert is a conical outer wall surface, a flat circular plane is arranged in the middle of the conical outer wall surface, and the circular plane is concentrically aligned with the pipeline hole and is parallel to the wall surface of the outer side wall; an annular gas diversion throat part is formed between the circular plane and the wall surface of the outer side wall, and a conical gas expansion part is formed between the conical outer wall surface and the wall surface of the outer side wall; the gas guide wall of the independent lower concave cavity is arc-shaped; the protruding bellying that has along the middle part in the top of half semicircle boss, be formed with the gas between bellying and the evagination rampart and assemble the groove, be formed with gas current-limiting clearance between the top of bellying and the protruding eaves of annular.

The preferable technical scheme is further as follows: the inner ring piece comprises an inner convex ring wall, an outer convex ring wall and a bottom ring wall, and a surrounding groove is formed among the inner convex ring wall, the outer convex ring wall and the bottom ring wall; an annular convex brim extends from the outer side of the top of the outer convex ring wall; the inner side convex ring wall is sleeved on the outer wall surface of the inner convex ring wall.

The preferable technical scheme is further as follows: and gas wind-shielding sheets are fixed on two sides of the outer hole opening of the pipeline hole on the reverse side of the bottom ring seat, and positioning bayonets are arranged between the gas wind-shielding sheets on the two sides.

The preferable technical scheme is further as follows: the central burner comprises a central fire cover I, a central fire cover II, a double-layer gas mixing head and two central gas injection pipes; the double-layer gas mixing head comprises an outer annular wall, an inner annular wall and an annular bottom wall, an annular outer gas mixing cavity is arranged between the outer annular wall and the inner annular wall, and an inner gas mixing cavity is arranged at the center of the inner annular wall; the top of the first central fire cover is provided with a central combustion fire distribution hole group; the side wall of the central fire cover II is provided with a central side combustion fire distribution hole group, and a hollow short pipe extends downwards from the middle; the first central fire cover is stacked on the second central fire cover and fixedly connected with the second central fire cover; the outer wall of the central fire cover II is fixedly connected to the top of the corresponding outer ring wall, the hollow short pipe is inserted into the inner ring wall and is communicated with the inner gas mixing cavity, and the outer gas mixing cavity is communicated with the central side combustion fire distributing hole group; two central gas injection pipes are fixed at the outer bottom of the bottom ring seat and are respectively arranged at the two air inlet gap parts, one of the two central gas injection pipes is communicated with the inner gas mixing cavity, and the other central gas injection pipe is communicated with the outer gas mixing cavity.

The preferable technical scheme is further as follows: the two central gas injection pipes comprise a first gas injection pipe and a second gas injection pipe, the inner gas mixing cavity is communicated with the first gas injection pipe, and the outer gas mixing cavity is communicated with the second gas injection pipe; the central side combustion fire distribution hole group, the outer gas mixing cavity and the gas injection pipe II are communicated; the right-center combustion fire distribution hole group, the hollow short pipe, the internal combustion gas mixing cavity and the gas injection pipe I are communicated; the first gas injection pipe and the second gas injection pipe are fixed on the reverse side of the bottom ring seat, and part of pipe sections and injection orifices of the first gas injection pipe and the second gas injection pipe are arranged at the air inlet gap parts of the first gas injection pipe and the second gas injection pipe; a first central combustion injection nozzle and a second central combustion injection nozzle are fixed on the base; the first central combustion injection nozzle is aligned to an injection orifice of the first gas injection pipe, and an air supplement surrounding gap is formed between the injection orifice and the first central combustion injection nozzle; the second central combustion injection nozzle is aligned to an injection orifice of the second gas injection pipe, and an air supplement surrounding gap is formed between the injection orifice and the second central combustion injection nozzle.

The preferable technical scheme is further as follows: the middle of the air inlet gap part of the injection orifices of the first gas injection pipe and the second gas injection pipe extends downwards to form a gas windshield sheet with the left side, the right side and the rear side connected with each other, and the gas windshield sheet semi-surrounds the central combustion injection nozzle; a Venturi tube is concealed and fixed in the first gas injection tube and the second gas injection tube; a positioning bayonet is arranged between the left wall and the right wall of the gas windshield sheet; and positioning columns are fixed on the tops of the first central combustion injection nozzle and the second central combustion injection nozzle, and the positioning columns are inserted into the positioning bayonets for positioning after the base is connected with the bottom ring seat.

The preferable technical scheme is further as follows: the first gas injection pipe and the second gas injection pipe are arranged with the corresponding first central combustion injection nozzle and the second central combustion injection nozzle in an inclined manner, the inclined angles are consistent, and the inclined angle is any degree between 5 and 20 degrees; the first central combustion injection nozzle and the second central combustion injection nozzle respectively comprise a central nozzle seat and a central gas injection nozzle, a central gas input channel is arranged in the central nozzle seat, the central gas injection nozzle is fixedly connected to the outlet of the central gas input channel, and the inlet of the central gas input channel is used for a gas pipe to be connected with input gas; the central nozzle seat of the first central combustion injection nozzle is connected with a central gas inlet pipe.

The preferable technical scheme is further as follows: the outer ring gas injection nozzle comprises an outer ring nozzle seat and an outer ring gas injection nozzle, an outer ring gas input channel is arranged in the outer ring nozzle seat, the outer ring gas injection nozzle is fixedly connected to the outlet of the outer ring gas input channel, the inlet of the outer ring gas input channel is fixedly connected with an outer ring gas inlet pipe, and the two outer ring gas injection nozzles are connected and communicated through the outer ring gas inlet pipe; the outer ring gas injection nozzles are arranged in an upward inclining manner; the pipeline holes are arranged in an upward inclination mode, the upward inclination angle of the pipeline holes is consistent with that of the outer ring gas injection nozzle, and the upward inclination angle is any degree between 5 degrees and 20 degrees; a positioning column is fixed at the top of the outer ring gas injection spray head, and the positioning column is inserted into the positioning bayonet for positioning after the base is connected with the bottom ring seat; the outer ring gas inlet pipe can be communicated or not communicated with the central gas inlet pipe.

The preferable technical scheme is further as follows: a flame monitoring needle and an ignition needle are longitudinally fixed in the middle of the base in a penetrating manner; the outer annular wall of the double-layer gas mixing head extends to form an annular flange, a flame monitoring needle positioning semicircular notch and an ignition needle positioning semicircular notch are formed in the annular flange, and the flame monitoring needle positioning semicircular notch and the ignition needle positioning semicircular notch correspond to the flame monitoring needle and the ignition needle one to one.

The combustor has the beneficial effects that: the product is mainly characterized in that at least two independent lower concave cavities are arranged on an outer ring gas mixing cavity, a pipeline hole vertical to the outer side wall is arranged in the middle of the outer side wall of each independent lower concave cavity, an outer ring gas injection nozzle is aligned to the pipeline hole, and gas flows and disperses to the upper side, the left side and the right side of each independent lower concave cavity after entering; the outer wall surface of the inner convex ring wall is sleeved with an inner ring piece, the inner ring piece is integrally arranged in the outer ring gas mixing cavity, the outer wall of the top of the inner ring piece transversely extends outwards to form an annular convex brim, the annular convex brim covers part of the outer ring gas mixing cavity and also covers the middle part of the independent lower concave cavity, and upper air holes are formed at two ends of the independent lower concave cavity which are not covered; an outer ring fire cover is fixedly connected between the outer convex ring wall and the inner convex ring wall together, and a flow limiting channel is formed between the edge of the annular convex brim and the top ring wall of the fire cover; when the annular gas injection nozzle is used, gas is injected through the outer ring gas injection nozzle and the pipeline holes, enters the annular gas expansion part through the annular gas diversion throat part, is fully distributed with the whole independent lower concave cavity, is distributed to the outer ring gas mixing cavity through the independent lower concave cavity, enters the surrounding mixing cavity through the flow limiting channel, and is finally sprayed and combusted at the outer ring fire hole group at the top; the gas distribution of the product is fuller and more uniform, and the burning firepower is arranged uniformly.

Drawings

Fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 are perspective views of the product of the invention;

FIG. 6 is a top view of a product of the invention;

FIG. 7 is a perspective view of the product base of the present invention connected to a base ring;

FIG. 8 is a perspective view of the connection of the inner ring member and the base ring of the product of the present invention;

FIGS. 9 and 10 are sectional views of the product of the invention;

FIG. 11 is a cross-sectional view of a base ring mount of the product of the present invention;

FIG. 12 is a perspective view of a base ring mount of the product of the present invention;

FIG. 13 is an exploded view of the product of the present invention;

figures 14 and 15 are perspective views of an inner ring member of the product of the invention;

fig. 16 and 17 are perspective views of the bottom ring seat of the product of the invention.

The gas burner comprises a base 1, an outer ring gas injection nozzle 11, a bottom ring seat 2, a central burner 3, an outer convex ring wall 21, an inner convex ring wall 22, a central upper air hole 4, an outer ring gas mixing cavity 23, an independent lower concave cavity 24, an inner side wall 241, an outer side wall 242, a cavity bottom wall 243, a gas guide wall 244, an arc inner side wall 2411, a plane inner side wall 2412, a semi-circle-lacking boss 245, a bottom ring wall 246, a pipeline hole 25, an air inlet gap 26, an inner insert 5, an annular gas diversion throat 247, an annular gas expansion part 248, an inner ring 27, an annular convex brim 271, an upper air hole 28, an outer ring fire cover 29, a top ring wall 291, a fire cover outer ring 292, a fire cover inner ring wall 293, an outer ring fire hole group 2911, a surrounding mixing cavity 294, a flow-limiting channel 295, a gas gap 272, a bulge 6, an air inlet notch 61, a mounting notch 51, a conical outer wall surface 52, a circular plane 53, a bulge 1, a gas groove 2, An inner convex annular wall 2701, an outer convex annular wall 2702, a surrounding groove 270 of a bottom annular wall 2703, a gas wind shield 62, a first central fire cover 31, a second central fire cover 32, a double-layer gas mixing head 33, two central gas injection pipes 34, a first gas injection pipe 341, a second gas injection pipe 342, an outer annular wall 331, an inner annular wall 332, an annular bottom wall 333, an annular outer gas mixing cavity 334, an inner gas mixing cavity 335, a central combustion fire distribution hole group 311, a central side combustion fire distribution hole group 321, a hollow short pipe 322, an air supplementing surrounding gap 71, a first central combustion injection nozzle 7, a second central combustion injection nozzle 8, a positioning bayonet 63, a positioning column 64, a central nozzle seat 81, a central gas injection nozzle 82, a central gas input channel 83, a central gas inlet pipe 72, an outer ring nozzle seat 111, an outer ring gas injection nozzle 112, an outer ring gas input channel 113, an outer ring gas inlet pipe 114, a gas outlet pipe 81, a gas, The flame monitoring needle comprises a flame monitoring needle 101, an ignition needle 102, an annular flange 301, a flame monitoring needle locating semicircular notch 302 and an ignition needle locating semicircular notch 303.

Detailed Description

A combustor, including base 1, ignition needle, its characterized in that: at least two outer ring gas injection nozzles 11 are fixed on the base 1; a bottom ring seat 2 is fixed on the base 1, and a central burner 3 is fixed in the middle of the bottom ring seat 2; the top of the bottom ring seat 2 is provided with an outward convex ring wall 21 and an inward convex ring wall 22 which extend upwards, a surrounding central upper air hole 4 is formed between the outer ring wall of the central burner 3 and the inward convex ring wall 22, an annular outer ring gas mixing cavity 23 is formed between the outward convex ring wall 21 and the inward convex ring wall 22, the outer ring gas mixing cavity 23 is provided with at least two independent lower cavities 24, the two independent lower cavities 24 are symmetrically parallel, and each independent lower cavity 24 comprises an inner side wall 241, an outer side wall 242 and a cavity bottom wall 243; a gas guide wall 244 is arranged between the cavity bottom wall 243 of the independent lower concave cavity 24 and the outer convex annular wall 21, and the gas guide wall 244 is an arc-shaped gas guide wall or a plane slope gas guide wall; the inner side wall 241 comprises an arc-shaped inner side wall 2411 in the middle and plane inner side walls 2412 at two ends (the two ends of the arc-shaped inner side wall 2411 are the plane inner side walls 2412); a semicircular boss 245 (the top wall surface of the semicircular boss 245 can be a plane) is formed between the outer side wall 242 of the independent lower cavity 24 and the outer convex ring wall 21, and the outer side wall 242 is arranged on the inner side of the semicircular boss 245; a bottom annular wall 246 of the outer annular gas mixing cavity 23 is formed between the plane inner side walls 2412 at two ends of two adjacent independent lower cavities 24 (the surface of the bottom annular wall 246 is planar), the two bottom annular walls 246 are symmetrically parallel, the bottom annular wall 246 and the half-unfilled circular boss 245 are the remaining parts of the bottom wall of the outer annular gas mixing cavity 23 which are not sunken, and the bottom annular wall 246 and the half-unfilled circular boss 245 are convex relative to the independent lower cavities 24; the middle part of the outer side wall 242 of each independent lower concave cavity 24 is provided with a pipeline hole 25 perpendicular to the outer side wall 242, the outer ring gas injection nozzle 11 is aligned to an outer hole of the pipeline hole 25, an air inlet gap 26 is formed between the outer hole of the pipeline hole 25 and the outer ring gas injection nozzle 11, and the air inlet gap 26 is used for leading the gas and the air into the independent lower concave cavity 24 and the outer ring gas mixing cavity 23 together for mixing when the gas is injected; an embedded insert 5 is fixed on the inner side wall 241 of each independent lower cavity 24, and an annular gas flow splitting throat 247 and an annular gas expansion part 248 are formed between the embedded insert 5 and the outer side wall 242 of the inner orifice of the pipeline hole 25 along the periphery; the outer wall surface of the inner convex annular wall 22 is sleeved with an inner annular member 27, the inner annular member 27 is integrally arranged in the outer annular gas mixing cavity 23, the outer wall of the top of the inner annular member 27 transversely extends outwards to form an annular convex brim 271, the annular convex brim 271 covers part of the outer annular gas mixing cavity 23 and also covers the middle part of the independent lower concave cavity 24, upper air holes 28 are formed at two ends of the independent lower concave cavity 24 which are not covered, the four upper air holes 28 are distributed at four positions of 12 o 'clock, 3 o' clock, 6 o 'clock and 9 o' clock approximately, and main gas of the independent lower concave cavity 24 rises from the upper air holes 28 and flows and is distributed to the whole outer annular gas mixing cavity 23; an outer ring fire cover 29 is fixedly connected between the outer convex ring wall 21 and the inner convex ring wall 22, the outer ring fire cover 29 is integrally formed, the outer ring fire cover 29 comprises a top ring wall 291, a fire cover outer ring wall 292 extends downwards from the outer side of the top ring wall 291, a fire cover inner ring wall 293 extends downwards from the inner side of the top ring wall 291, a surrounding mixing cavity 294 is formed between the fire cover outer ring wall 292 and the fire cover inner ring wall 293, an outer ring fire hole group 2911 is arranged on the top ring wall 291, and the outer ring fire hole group 2911 is communicated with the surrounding mixing cavity 294; the outer ring wall 292 of the fire cover is fixedly connected with the outer convex ring wall 21, and the inner ring wall 293 of the fire cover is fixedly connected with the inner convex ring wall 22; a flow-limiting channel 295 for upward flow of fuel gas is formed between the edge of the annular convex brim 271 and the top ring wall 291 of the fire cover; the gas is injected through the outer ring gas injection nozzle 11 and the pipeline hole 25, enters the annular gas expansion part 248 through the annular gas diversion throat part 247, is fully distributed with the whole independent lower concave cavity 24, is distributed to the outer ring gas mixing cavity 23 through the independent lower concave cavity 24, enters the surrounding mixing cavity 294 through the flow limiting channel 295, and is finally sprayed and combusted at the top outer ring fire hole group 2911; a gas flow-limiting gap 272 is formed between the top of the semi-semicircular boss 245 and the annular convex brim 271; the opposite reverse side of the independent lower cavity 24 is provided with a bulge part 6, and the adjacent two bulge parts 6 and the bottom annular wall 246 form a transverse air inlet notch part 61; after the base 1 is connected with the bottom ring base 2, the air inlet gap part 61 becomes an air inlet hole, and the external air enters from the air inlet hole and then rises from the central upper air hole 4 to supplement oxygen for central combustion and outer ring combustion.

The outer ring gas injection nozzles 11 can also be three or four, the corresponding independent concave cavities 24 are also three or four, and the number of the outer ring gas injection nozzles 11 is the same as that of the independent concave cavities 24, and the structure of the outer ring gas injection nozzles is the same as that of the independent concave cavities 24.

The embedded pieces 5 are fixedly connected to the bottom of the inner ring piece 27, an installation gap part 51 is formed between the bottom of the inner ring piece 27 and two adjacent embedded pieces 5, and when the embedded pieces 5 are embedded into the independent lower cavity 24, the bottom of the inner ring piece 27 provided with the gap part 51 is fixedly connected with the inner side of the bottom ring wall 246; the outer wall surface of the embedded insert 5 is a conical outer wall surface 52, a flat circular plane 53 is arranged in the middle of the conical outer wall surface 52, the diameter of the circular plane 53 is larger than that of the inner orifice of the pipeline hole 25, and the circular plane 53 is concentrically aligned with the pipeline hole 25 and is parallel to the wall surface of the outer side wall 242; an annular gas diversion throat 247 is formed between the circular plane 53 and the wall surface of the outer side wall 242 (excluding the plane in which the circular plane 53 is directly aligned with the inner orifice of the duct hole 25), and a conical gas expansion part 248 is formed between the conical outer wall surface 52 and the wall surface of the outer side wall 242 (the conical surrounding space formed by the gas expansion part 248 widening from inner narrow to outer); the gas guide wall of the independent lower concave cavity 24 is arc-shaped; the middle part of the inner edge of the top of the semicircular boss 245 is protruded with a convex part 2451 (the convex part 2451 is in a semicircular shape), a gas convergence groove 2452 is formed between the convex part 2451 and the convex annular wall 21, a gas flow-limiting gap 272 is formed between the top of the convex part 2451 and the annular convex brim 271, and the gas flow-limiting gap 272 and the gas convergence groove 2452 are used for enabling the gas distribution of the independent concave cavity 24 to converge and be fully distributed on the top of the whole semicircular boss 245, so that the gas distribution of the outer annular gas mixing cavity 23 is uniform.

The inner ring 27 comprises an inner convex ring wall 2701, an outer convex ring wall 2702 and a bottom ring wall 2703, wherein a surrounding groove 2704 is formed among the inner convex ring wall 2701, the outer convex ring wall 2702 and the bottom ring wall 2703, and the surrounding groove 2704 is used for increasing the space surrounding the mixing cavity 294, so that the gas distribution surrounding the mixing cavity 294 is fuller and more uniform, and the combustion fire power is uniformly distributed; an annular convex brim 271 extends from the top of the outer convex ring wall 2702; the inner convex ring wall 2701 is sleeved on the outer wall surface of the inner convex ring wall 22.

Gas wind-shielding sheets 62 are fixed on two sides of the outer hole of the pipeline hole 25 on the reverse side of the bottom ring seat 2, and a positioning bayonet 63 is arranged between the gas wind-shielding sheets 62 on the two sides. The gas wind-blocking sheet 62 prevents the outside wind from blowing away the gas or prevents the gas from diffusing outward, so that the gas is intensively injected into the pipe hole 25, and the gas leakage is prevented.

The central burner 3 comprises a central fire cover I31, a central fire cover II 32, a double-layer gas mixing head 33 and two central gas injection pipes 34; the double-layer gas mixing head 33 comprises an outer annular wall 331, an inner annular wall 332 and an annular bottom wall 333, an annular outer gas mixing cavity 334 is arranged between the outer annular wall 331 and the inner annular wall 332, and an inner gas mixing cavity 335 is arranged at the center of the inner annular wall 332; the top of the central fire cover I31 is provided with a central combustion fire distribution hole group 311; the side wall of the second central fire cover 32 is provided with a central side combustion fire distribution hole group 321, and the middle part of the second central fire cover extends downwards to form a hollow short pipe 322; the first central fire cover 31 is stacked on the second central fire cover 32 and fixedly connected with the second central fire cover; the outer wall of the second central fire cover 32 is fixedly connected to the top of the corresponding outer annular wall 331, the hollow short pipe 322 is inserted into the inner annular wall 333 and is communicated with the inner wall surface of the inner gas mixing cavity 335, the inner gas mixing cavity 335 is communicated with the central combustion fire distribution hole group 311 through the hollow short pipe 322, and the outer gas mixing cavity 334 is communicated with the central side combustion fire distribution hole group 321; two central gas injection pipes 34 are fixed at the outer bottom of the bottom ring seat 2 and are respectively arranged at the two air inlet gap portions 61, one of the two central gas injection pipes 34 is communicated with the inner gas mixing cavity 335, and the other central gas injection pipe is communicated with the outer gas mixing cavity 334.

The two central gas injection pipes 34 comprise a first gas injection pipe 341 and a second gas injection pipe 342, the inner gas mixing cavity 335 is communicated with the first gas injection pipe 341, and the outer gas mixing cavity 334 is communicated with the second gas injection pipe 342; the central side combustion fire distribution hole group 321, the outer gas mixing cavity 334 and the second gas injection pipe 342 are communicated; the right-center combustion fire distribution hole group 311, the hollow short pipes 322, the internal combustion gas mixing cavity 335 and the first gas injection pipe 341 are communicated; the first gas injection pipe 341 and the second gas injection pipe 342 are fixed on the reverse side of the bottom ring seat 2, and partial pipe sections and injection orifices of the first gas injection pipe 341 and the second gas injection pipe 342 are arranged at the two air inlet gap parts 61 (namely, a central gas injection pipe is fixed on each of the two air inlet gap parts 61); a first central combustion injection nozzle 7 and a second central combustion injection nozzle 8 are fixed on the base 1; the first central combustion injection nozzle 7 is aligned to an injection orifice of the first gas injection pipe 341, and an air supplement surrounding gap 71 is formed between the injection orifice and the first central combustion injection nozzle 7; the second central combustion ejector nozzle 8 is aligned to the ejector orifice of the second fuel gas ejector pipe 342, and an air supplement surrounding gap 71 is formed between the ejector orifice and the second central combustion ejector nozzle 8. The air supplement surrounding gap 71 is used for introducing gas together with air for air-fuel mixing during gas injection.

The gas air baffles 62 with the left side, the right side and the rear side connected extend downwards in the middle of the air inlet gap 61 of the injection orifices of the first gas injection pipe 341 and the second gas injection pipe 342 (the advantages of preventing the outside air from blowing away the gas or preventing the gas from diffusing outwards, leading the gas to be intensively injected into the central gas injection pipe, preventing the gas from leaking and the like) and the gas air baffles 62 semi-surround the central combustion injection nozzle; venturi tubes are fixedly arranged in the first gas injection pipe 341 and the second gas injection pipe 342; a positioning bayonet 63 is arranged between the left wall and the right wall of the gas windshield 62; positioning columns 64 are fixed to the tops of the first central combustion injection nozzle 7 and the second central combustion injection nozzle 8, and the positioning columns 64 are inserted into the positioning bayonets 63 to be positioned after the base 1 is connected with the bottom ring base 2. The positioning bayonet 63 is arranged on the reverse side of the base ring seat.

The first gas injection pipe 341 and the second gas injection pipe 342 are arranged with the corresponding first central combustion injection nozzle 7 and the second central combustion injection nozzle 8 in an inclined manner, the inclined angles are consistent, and the inclined angle is any degree between 5 and 20 degrees; the first central combustion injection nozzle 7 and the second central combustion injection nozzle 8 respectively comprise a central nozzle seat 81 and a central gas injection nozzle 82, a central gas input channel 83 is arranged in the central nozzle seat 81, the central gas injection nozzle 82 is fixedly connected to the outlet of the central gas input channel 83, and the inlet of the central gas input channel 83 is used for a gas pipe to be connected with input gas; the central nozzle seat of the first central combustion injection nozzle 7 is connected with a central gas inlet pipe 72.

The outer ring gas injection nozzle 11 comprises an outer ring nozzle seat 111 and an outer ring gas injection nozzle 112, an outer ring gas input channel 113 is arranged in the outer ring nozzle seat 111, the outer ring gas injection nozzle 112 is fixedly connected to an outlet of the outer ring gas input channel 113, an inlet of the outer ring gas input channel 113 is fixedly connected with an outer ring gas inlet pipe 114, and the two outer ring gas injection nozzles 11 are connected and communicated through the outer ring gas inlet pipe 114; the outer ring gas injection nozzle 11 is arranged in an upward inclining manner; the pipeline holes 25 are arranged in an upward inclination manner and are consistent with the upward inclination angle of the outer ring gas injection nozzle 11, and the upward inclination angle is any degree between 5 and 20 degrees; a positioning column 64 is fixed at the top of the outer ring gas injection nozzle 11, and the positioning column 64 is inserted into the positioning bayonet 63 for positioning after the base 1 is connected with the bottom ring base 2; the outer ring gas inlet pipe 114 may or may not communicate with the center gas inlet pipe 72.

A flame monitoring needle 101 and an ignition needle 102 are longitudinally fixed in the middle of the base 1 in a penetrating manner; an annular flange 301 extends from the outer annular wall of the double-layer gas mixing head 33, a flame monitoring needle positioning semicircular notch 302 and an ignition needle positioning semicircular notch 303 are arranged on the annular flange 301, and the flame monitoring needle positioning semicircular notch 302 and the ignition needle positioning semicircular notch 303 correspond to the flame monitoring needle 101 and the ignition needle 102 one by one.

The outer wall surface of the embedded insert can be replaced by a pure flat wall surface instead of a conical outer wall surface, the outer side wall surface of the inner hole of the pipeline hole along the periphery can be replaced by a raised plane ring, and the plane ring extends to form the conical wall surface.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, and all technical solutions belonging to the principle of the present invention belong to the protection scope of the present invention. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.