Fan-shaped flame burner and fan-shaped flame burning equipment

Abstract

The utility model belongs to the technical field of kiln combustion equipment, and particularly relates to a fan-shaped flame combustor and fan-shaped flame combustion equipment. According to the fan-shaped flame burner, the main gas nozzle is provided with the gas lateral spraying holes which are arranged in an inclined mode in the radial outer side direction, so that main gas jet flow output by the gas lateral spraying holes is sprayed out in the lateral direction and then mixed with air to form fan-shaped flame sprayed in a long distance, and the mode that the main gas jet flow is sprayed out in the lateral direction and mixed with the air is adopted. The phenomenon that the heated material is impacted by the straight flame when the fuel gas adjusting range is low is well avoided, the problem that the flame adjusting range is small due to insufficient centrifugal force caused by low rotating airflow speed is solved, and the working stability and the use reliability of the fan-shaped flame are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of kiln combustion equipment, and in particular relates to a fan-shaped flame burner and fan-shaped flame combustion equipment. Background Art

[0002] In certain heating furnace applications, the heated material is close to the furnace wall and could be damaged by direct impact from the high-temperature flame. Therefore, the flame needs to meander and burn in the narrow space between the furnace wall and the material, which requires a combustion device that can generate a flat flame.

[0003] Traditional flat-flame burners produce a flat, disc-shaped flame. Their working mechanism relies on the enormous centrifugal force generated by the intense swirling airflow created by the mixture of air and gas. This centrifugal force, combined with the airflow attachment effect created by the curved flame path, causes the flame to extend and cling to the furnace wall, forming a disc-like shape.

[0004] However, flat-flame burners exhibit certain limitations in practical applications. For example, their adjustment range is relatively limited. When the speed (or momentum) of the swirling airflow drops below a critical value, the centrifugal force becomes insufficient to maintain the flame's attachment to the furnace wall, and the flame shifts to a direct beam, directly impacting the heated material. Therefore, under conditions of frequent load fluctuations, flat-flame burners often lack the stability and reliability to maintain a flat flame. Utility Model Content

[0005] The purpose of the utility model is to overcome the problems of the existing flat flame burners, such as the small flame adjustment range and the problem that when the rotating air flow speed is low, the flame is prone to insufficient centrifugal force, resulting in loss of wall adhesion ability and becoming a straight flame, so that the flame directly impacts the heated material. The utility model provides a fan flame burner and a fan flame combustion device, which are provided with gas side spray holes arranged at an angle along the radial outer side of the main gas nozzle, so that the main gas jet output by the gas side spray holes is sprayed sideways and then mixed with air to form a fan flame with a large adjustment ratio and a long spray distance.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A fan flame burner includes a flame stabilizing igniter and at least one main gas nozzle arranged outside the flame stabilizing igniter, the main gas nozzle extending outward from the flame stabilizing igniter in the axial direction, and the main gas nozzle is provided with gas side spray holes arranged at an angle along the radial outer side direction, the direction of the gas side spray holes is staggered in the circumferential direction with respect to the direction of flame generation of the main gas nozzle, and the gas side spray holes are arranged as at least a plurality of circular hole-shaped gas side spray holes and / or at least one flat gas side spray hole.

[0008] Compared with the prior art, the fan-shaped flame burner of the present invention is provided with gas side spray holes arranged at an angle along the radial outer side of the main gas nozzle, so that the main gas jet output by the gas side spray hole is mixed with air after being ejected laterally to form a fan-shaped flame ejected over a long distance. This method of mixing the main gas jet with air by ejecting it laterally can better avoid the phenomenon of direct flame impacting the heated material when the gas adjustment range is low, and avoids the problem of a small flame adjustment range caused by insufficient centrifugal force due to low rotating air flow speed, thereby ensuring the stable operation and reliable use of the fan-shaped flame.

[0009] Furthermore, the inclination angle of the gas side spray hole 41 relative to the radial direction of the main gas nozzle is 0° to 70°; through this arrangement, the fan-shaped flame formed by the gas side spray hole 41 is close to the side of the heated object, and the fan-shaped flame heating effect is better.

[0010] Furthermore, a plurality of side gas spray holes are provided, and the plurality of side gas spray holes are adjacently arranged and surround the outer periphery of the main gas nozzle; the angle between two side gas spray holes adjacently arranged in the circumferential direction of the main gas nozzle is 30° to 80°; through such an arrangement, a plurality of side gas spray holes are provided along the circumference, and can be distributed at a certain angle with the axis of the main gas nozzle as the center, thereby forming a fan-shaped flame with a larger angle range, and forming a complete fan-shaped flame with a larger heating area.

[0011] Furthermore, at least two side gas spray holes are provided along the axial direction of the corresponding main gas nozzle, and the angle between the two side gas spray holes adjacently arranged in the longitudinal direction of the main gas nozzle is 0° to 80°; through such an arrangement, multiple side gas spray holes are provided along the axial direction, so that the thickness and length of the flame can be set according to requirements.

[0012] Furthermore, the main gas nozzle is provided with a plurality of flame propagation holes arranged circumferentially between the gas lateral spray hole adjacent to the flame stabilizing igniter and the flame stabilizing igniter; through such an arrangement, the gas sprayed from the flame propagation hole is mixed with the air and, under the ignition action of the flame stabilizing igniter, forms a row of propagation flames which are transmitted to the gas lateral spray hole, thereby ensuring that the main gas jet sprayed from the gas lateral spray hole is ignited.

[0013] Furthermore, there are two main gas nozzles, which are symmetrically arranged on both sides below the flame stabilizing igniter. Through this arrangement, the main gas jets formed by the gas side spray holes at different angles of the two main gas nozzles respectively constitute a fan-shaped flame area with a certain angle coverage range. The main gas nozzles and their gas side spray holes form a symmetrical left-right layout, so that the heated object is heated symmetrically on both sides.

[0014] Furthermore, the flame-stabilizing igniter includes an ignition electrode and an ignition gas burner; the ignition gas burner includes an ignition gas nozzle and an air delivery portion arranged radially around the ignition gas nozzle, the air delivery portion includes an air-fuel premixing air disk and an air-fuel stabilizing flame air disk arranged in sequence along its gas delivery direction; the air-fuel premixing air disk is circumferentially provided with a plurality of premixing air holes arranged along the axial direction, the air-fuel stabilizing flame air disk is circumferentially provided with a plurality of flame-stabilizing air holes arranged along the axial direction, the flame-stabilizing air holes and the premixing air holes are relatively staggered in the axial direction, and the ignition gas burner is provided with a radially arranged premixing gas nozzle between the air-fuel premixing air disk and the air-fuel stabilizing flame air disk, the premixing gas nozzle The gas nozzle is used to deliver a premixed gas jet that mixes with the premixed air jet delivered by the premixing air hole to form a premixed air-fuel jet that is discharged through the flame-stabilizing air hole. The outer periphery of the ignition gas burner is located outside the air-fuel and flame-stabilizing air disk and is respectively provided with an ignition gas radial nozzle and an ignition gas angle nozzle. The ignition gas radial nozzle and the ignition gas angle nozzle are respectively used to deliver the ignition gas jet and the premixed air-fuel jet discharged through the flame-stabilizing air hole to mix to form a stable flame ignition zone when the igniter ignites. Through this arrangement, the flame-stabilizing igniter provides a duty flame for igniting the main gas nozzle and works synchronously with the main gas spray gun to ensure stable and reliable flame operation. At the same time, the flame-stabilizing igniter has a wide adjustment range, can adapt to various harsh operating environments, and can resist large furnace pressure changes and interference from the main flame.

[0015] Furthermore, the flame-stabilizing igniter also includes an ignition tube, the ignition electrode, the ignition gas burner and the air delivery part are arranged in the ignition tube, the air-fuel premixing air disk is connected to the outer periphery of the ignition gas burner, and a premixing air annular gap is formed between the outer end of the air-fuel premixing air disk and the ignition tube, and the premixing air annular gap is used to deliver the premixed air jet and the premixed gas jet delivered by the premixing gas nozzle to form a premixed air-fuel jet discharged through the flame-stabilizing air hole; through such an arrangement, annular gap-type premixed air jets are generated through the premixing air annular gap, and small streams of premixed air jets are generated by the premixing air hole, and the large flame-stabilizing air holes and small flame-stabilizing air holes of the flame-stabilizing air disk are combined to create premixed air-fuel jets with different gas concentrations between the air-fuel premixing air disk and the air-fuel flame-stabilizing air disk, thereby improving the stability and reliability of the stable flame ignition zone.

[0016] Furthermore, the flame-stabilizing air holes include small flame-stabilizing air holes located radially inward and large flame-stabilizing air holes located radially outward, and the small flame-stabilizing air holes and the large flame-stabilizing air holes are staggered relative to the premixed air annular gap and the premixed air holes, respectively. By such an arrangement, the travel and time of the premixed air holes and the premixed air annular gap in which the premixed air-fuel jet is discharged from the air-fuel flame-stabilizing air disk are effectively extended, so that the premixed air-fuel jet is better mixed with the premixed gas jet discharged from the premixed gas nozzle, and the flame stabilization and reliability of the flame ignition zone are better.

[0017] Furthermore, it also includes a gas delivery portion connected to the inner side of the ignition gas burner, and the gas delivery portion includes a gas output channel connected to the ignition gas burner and an air output channel connected to the air delivery portion.

[0018] The fan-shaped flame combustion equipment comprises a furnace wall and the fan-shaped flame burner installed in the furnace wall, the main gas nozzle extending outward from the wall surface of the furnace wall, and the furnace wall is provided with a combustion-supporting air nozzle corresponding to each gas nozzle on the outside of the fan-shaped flame burner, and the gas side nozzle hole is used to generate a main gas jet flowing through the combustion-supporting air nozzle and its outside; through such an arrangement, the main gas nozzle is provided with a gas side nozzle hole arranged at an angle along the radial outer side, and the furnace wall is provided with a combustion-supporting air nozzle on the path where each main gas nozzle generates the main gas jet, so that the main gas jet generated by the main gas nozzle along the lateral direction, after being transported for a distance, flows through the combustion-supporting air nozzle and its outside and mixes with the combustion-supporting air flow generated by the combustion-supporting air nozzle to form a fan-shaped flame with a longer distance spraying. This method of mixing the main gas jet ejected from the side with the combustion-supporting air flow can better avoid the phenomenon of direct flame impacting the heated material when the gas adjustment range is low, and avoids the problem of small flame adjustment range caused by insufficient centrifugal force due to low rotating air flow speed, thereby ensuring the stable operation and reliable use of the fan-shaped flame. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of a fan flame burner.

[0020] Figure 2 A side view of a fan flame burner.

[0021] Figure 3 A cross-sectional view of a fan flame burner.

[0022] Figure 4 A cross-sectional view of the main gas nozzle in a fan flame burner.

[0023] Figure 5 for Figure 4 Cross-sectional view along the BB direction.

[0024] Figure 6 This is a cross-sectional view along the AA direction in section 4.

[0025] Figure 7 Schematic diagram of the main gas nozzle.

[0026] Figure 8 Schematic diagram of fan flame combustion equipment.

[0027] Figure 9 Schematic diagram of the combustion state of a fan flame burner.

[0028] Figure 10 It is a side view of the fan flame burner in the combustion state.

[0029] Explanation of reference numerals: fan-shaped flame burner 1, furnace wall 2, flame stabilizing igniter 3, main gas nozzle 4, gas lateral nozzle hole 41, main gas delivery part 42, main gas inlet 421, mounting hole 21, combustion-supporting air nozzle 22, flame propagation hole 44, gas output part 45, ignition electrode 6, ignition gas burner 301, ion flame monitoring electrode 5, ignition gas nozzle 31, air delivery part 302, air-fuel premixing air disk 32, air-fuel stabilizing flame air disk 33, premixing air hole 321, premixing gas nozzle 311, ignition gas radial nozzle 312, ignition gas inclination nozzle 313, stable flame ignition area 34, ignition tube 35, premixing air annular gap 322, small flame stabilizing air hole 332, large flame stabilizing air hole 333, gas delivery part 36, gas output channel 361, air output channel 362, ignition gas inlet 363, ignition air inlet 364. DETAILED DESCRIPTION

[0030] The following describes specific embodiments of the present invention in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0031] Example 1:

[0032] See also Figures 1 to 10 The fan flame burner 1 of the present invention includes a flame stabilizing igniter 3 and at least one main gas nozzle 4 arranged outside the flame stabilizing igniter 3, the main gas nozzle 4 extending outward from the flame stabilizing igniter 3 in the axial direction, and the main gas nozzle 4 is provided with gas side spray holes 41 arranged at an angle along the radial outer side direction, the gas side spray holes 41 are staggered in the circumferential direction with respect to the direction of flame generation of the main gas nozzle 4, and the gas side spray holes 41 are at least provided with a plurality of circular hole-shaped gas side spray holes 41 and / or at least one flat gas side spray hole 41.

[0033] Compared with the prior art, the fan-shaped flame burner 1 of the present invention is provided with a gas lateral spray hole 41 arranged at an angle along the radial outer side direction of the main gas nozzle 4, so that the main gas jet output by the gas lateral spray hole 41 is ejected laterally and mixed with air to form a fan-shaped flame ejected over a long distance. This method of laterally ejecting the main gas jet and mixing it with air can better avoid the phenomenon of direct flame impacting the heated material when the gas adjustment range is low, and avoids the problem of a small flame adjustment range caused by insufficient centrifugal force due to the low rotating air flow speed, thereby ensuring the stable operation and reliability of the fan-shaped flame.

[0034] In one embodiment, see Figure 7 The gas side spray holes 41 are configured as a plurality of circular hole-shaped gas side spray holes 41 .

[0035] Alternatively (not shown), the gas side spray holes 41 are configured as one or more flat gas side spray holes 41 .

[0036] Alternatively (not shown), the gas side spray holes 41 are configured as a combination of circular gas side spray holes 41 and flat gas side spray holes 41 .

[0037] Alternatively (not shown), the gas side spray holes 41 are configured as a combination of a plurality of circular hole-shaped gas side spray holes 41 and other hole-shaped gas side spray holes 41 .

[0038] Alternatively (not shown), the gas side spray holes 41 are configured as a combination of one or more flat gas side spray holes 41 and other hole-shaped gas side spray holes 41 .

[0039] See also Figure 7 In one embodiment, the side gas injection holes 41 are inclined at an angle of 0° to 70° relative to the radial direction of the main gas nozzle 4. This arrangement allows the fan-shaped flames formed by the side gas injection holes 41 to be closer to the object being heated, resulting in a better heating effect. Furthermore, the side gas injection holes 41 are arranged at a certain angle to the surface of the furnace wall 2 to reduce thermal erosion of the furnace wall 2.

[0040] See also Figures 7 to 10 In one embodiment, a plurality of gas side spray holes 41 are provided. The plurality of gas side spray holes 41 are adjacently arranged and surround the outer circumference of the main gas nozzle 4. At least two gas side spray holes 41 are provided circumferentially, or in at least two rows. The angle between two adjacent gas side spray holes 41 arranged circumferentially of the main gas nozzle 4 is 30° to 80°. With this arrangement, a plurality of gas side spray holes 41 are provided circumferentially and can be distributed at a certain angle with the axis of the main gas nozzle 4 as the center, thereby forming a fan-shaped flame with a larger angle range, and forming a complete fan-shaped flame with a larger heating area.

[0041] See also Figure 1 、 Figure 2 and Figure 7 In one embodiment, at least one, at least two, or at least one row of side gas spray holes 41 are provided along the axial direction of the corresponding main gas nozzle 4, and the angle between two adjacent side gas spray holes 41 arranged in the longitudinal direction of the main gas nozzle 4 is 0° to 80°. By so configuring, a plurality of side gas spray holes 41 are provided along the axial direction, so that the thickness and length of the flame can be adjusted as required.

[0042] In one embodiment, at least two main gas nozzles 4 are provided and arranged around the periphery of the flame stabilizing igniter 3. The gas side spray holes 41 of at least two main gas nozzles 4 are arranged in a symmetrical direction. A main gas delivery portion 42 for delivering main gas is provided on the inner side of each main gas nozzle 4. The main gas delivery portion 42 is used to provide gas to the main gas nozzle 4 and the gas side spray holes 41. A main gas input port 421 is provided at one end of the main gas delivery portion 42.

[0043] See also Figure 1 、 Figure 2 、 Figures 8 to 10 In one embodiment, they are symmetrically arranged on both sides below the flame stabilizing igniter 3; through this arrangement, the main gas jets formed by the gas side nozzles 41 at different angles of the two main gas nozzles 4 respectively form a fan-shaped flame area with a certain angle coverage range, and the main gas nozzles 4 and their gas side nozzles 41 form a symmetrical left-right layout, so that the heated object is heated symmetrically on both sides.

[0044] See also Figure 7 In one embodiment, a conical gas output portion 45 is provided at the outer end of the main gas nozzle 4 , and the gas side spray holes 41 and the flame propagation holes 44 are provided on the gas output portion 45 .

[0045] See also Figures 2 to 6In one embodiment, the flame stabilizing igniter 3 includes an ignition electrode 6, an ignition gas burner 301 and an ion flame monitoring electrode 5; the ignition gas burner 301 includes an ignition gas nozzle 31 and an air conveying portion 302 arranged around the radial outer periphery of the ignition gas nozzle 31, the ignition electrode 6 and the ion flame monitoring electrode 5 are symmetrically arranged on both sides of the ignition gas nozzle 31 and pass through the air conveying portion 302, the air conveying portion 302 includes an air-fuel premixing air disk 32 and an air-fuel stabilizing flame air disk 33 arranged in sequence along its gas conveying direction, the air-fuel stabilizing flame air disk 33 is axially located outside the air-fuel premixing air disk 32; the air-fuel premixing air disk 32 is circumferentially provided with a plurality of premixing air holes 321 arranged along the axial direction, the air-fuel stabilizing flame air disk 33 is circumferentially provided with a plurality of flame stabilizing air holes arranged along the axial direction, the flame stabilizing air holes and the premixing air holes 321 are relatively staggered in the axial direction, the ignition The gas burner 301 is located between the air-fuel premixing air disk 32 and the air-fuel stabilizing flame air disk 33 and is provided with radially arranged premixed gas nozzles 311, and the premixed gas nozzles 311 are used to convey the premixed gas jet and mix with the premixed air jet conveyed by the premixing air hole 321 to form a premixed air-fuel jet discharged through the flame stabilizing air hole; the outer periphery of the ignition gas burner 301 is located outside the air-fuel stabilizing flame air disk 33 and is respectively provided with ignition gas radial nozzles 312 and ignition gas inclined nozzles 313, and the ignition gas radial nozzles 312 and ignition gas inclined nozzles 313 are respectively used to convey the ignition gas jet and mix with the premixed air-fuel jet discharged through the flame stabilizing air hole to form a stable flame ignition zone 34 when the igniter is ignited; through such an arrangement, the flame stabilizing flame igniter 3 is provided to provide a duty flame for igniting the main gas nozzle 4, and works synchronously with the main gas spray gun to ensure stable and reliable flame operation. At the same time, the flame stabilizing igniter 3 has a wide adjustment range, can adapt to various harsh use environments, and can resist large-scale furnace pressure changes and interference from the main flame.

[0046] See also Figures 2 to 6In one embodiment, the flame-stabilizing igniter 3 further includes an ignition tube 35, the ignition electrode 6, the ignition gas burner 301 and the air delivery part 302 are arranged in the ignition tube 35, the air-fuel premixing air disc 32 is connected to the outer periphery of the ignition gas burner 301, and a premixing air annular gap 322 is formed between the outer end of the air-fuel premixing air disc 32 and the ignition tube 35. The premixing air annular gap 322 is used to mix the premixed air jet delivered by the premixing gas nozzle 311 with the premixing gas jet delivered by the premixing gas nozzle 311 to form a premixed air-fuel jet discharged through the flame-stabilizing air hole; the flame-stabilizing air hole includes a small flame-stabilizing air hole located radially inward. Hole 332 and the flame-stabilizing large wind hole 333 located radially outward, the flame-stabilizing small wind hole 332 and the flame-stabilizing large wind hole 333 are staggered with the premixed air annular gap 322 and the premixed air hole 321 respectively; through such arrangement, annular gap type premixed air jet is generated through the premixed air annular gap 322, small stream premixed air jet is generated by the premixed air hole 321, and the flame-stabilizing large wind hole 333 and the flame-stabilizing small wind hole 332 of the flame-stabilizing air disk are staggered to produce premixed air-fuel jets with different gas concentrations between the air-fuel premixed air disk 32 and the air-fuel flame-stabilizing air disk 33, thereby improving the stability and reliability of the stable flame ignition zone 34.

[0047] See also Figures 2 to 6 In one embodiment, the flame-stabilizing air holes include a small flame-stabilizing air hole 332 located radially inward and a large flame-stabilizing air hole 333 located radially outward, and the small flame-stabilizing air hole 332 and the large flame-stabilizing air hole 333 are staggered relative to the premixed air annular gap 322 and the premixed air hole 321, respectively; through such an arrangement, the travel and time of the premixed air hole 321 and the premixed air annular gap 322 to generate the premixed air-fuel jet discharged from the air-fuel flame-stabilizing air disk 33 are effectively extended, so that the premixed air-fuel jet is better mixed with the premixed gas jet discharged from the premixed gas nozzle 311, and the flame stabilization and reliability of the stable flame ignition zone 34 are better.

[0048] See also Figures 2 to 6 In one embodiment, it further includes a gas delivery portion 36 connected to the inner side of the ignition gas burner 301, the gas delivery portion 36 including a gas output channel 361 communicating with the ignition gas burner 301 and an air output channel 362 communicating with the air delivery portion 302, and an ignition gas inlet 363 communicating with the gas output channel 361 and an ignition air inlet 364 communicating with the air output channel 362 are provided at the end of the gas delivery portion 36.

[0049] Example 2:

[0050] The main purpose of this embodiment is to provide a fan-shaped flame burning device using the fan-shaped flame burner 1 of embodiment 1, including a furnace wall 2 and the fan-shaped flame burner 1. The furnace wall 2 is provided with a mounting hole 21 for placing the burner 1. The burner 1 is installed in the mounting hole 21. The main gas nozzle 4 extends outward from the wall of the furnace wall 2. The furnace wall 2 is located outside the fan-shaped flame burner 1 and is provided with a combustion air nozzle 22 corresponding to each gas nozzle. The gas lateral nozzle 41 is used to generate a main gas jet flowing through the combustion air nozzle 22 and the outside of it.

[0051] Compared with the existing technology, the fan-shaped flame combustion equipment of the present invention is provided with a gas lateral spray hole 41 arranged at an angle along the radial outer side direction of the main gas nozzle 4, and the furnace wall 2 is provided with a combustion air nozzle 22 on the path of each main gas nozzle 4 generating the main gas jet, so that the main gas jet generated by the main gas nozzle 4 along the lateral direction is mixed with the combustion air flow generated by the combustion air nozzle 22 when it flows through the combustion air nozzle 22 and the outside after being transported for a distance, forming a fan-shaped flame sprayed over a longer distance. This method of mixing the main gas jet ejected laterally with the combustion air flow can better avoid the phenomenon of direct flame impacting the heated material when the gas adjustment range is low, and avoids the problem of small flame adjustment range caused by insufficient centrifugal force due to low rotating air flow speed, thereby ensuring the stable operation and reliable use of the fan-shaped flame.

[0052] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and any modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience of description only and do not constitute any limitation to the present invention.

Claims

1. Fan flame burner, characterized in that, The invention comprises a flame stabilizing igniter and at least one main gas nozzle arranged outside the flame stabilizing igniter, wherein the main gas nozzle extends out of the outside of the flame stabilizing igniter in the axial direction, and the main gas nozzle is provided with gas side spray holes arranged at an angle along the radial outer side direction, and the direction of the gas side spray holes is staggered in the circumferential direction with respect to the direction of generating flame of the main gas nozzle, and the gas side spray holes are provided with at least a plurality of circular hole-shaped gas side spray holes and / or at least one flat gas side spray hole.

2. The fan flame burner according to claim 1, characterized in that: The inclination angle of the gas side spray hole relative to the radial direction of the main gas nozzle is 0° to 70°.

3. The fan flame burner according to claim 1, characterized in that: A plurality of the gas side spray holes are provided, and the plurality of gas side spray holes are arranged adjacent to each other and surround the outer periphery of the main gas nozzle.

4. The fan flame burner according to claim 3, characterized in that: The included angle between two adjacent gas side spray holes arranged in the circumferential direction of the main gas nozzle is 30° to 80°.

5. The fan flame burner according to any one of claims 1 to 4, characterized in that: At least two side gas spray holes are provided along the axial direction of the corresponding main gas nozzle; The main gas nozzle is located between the gas lateral spray hole adjacent to the flame stabilizing igniter and the flame stabilizing igniter and is provided with a plurality of flame propagation holes arranged along the circumferential direction.

6. The fan flame burner according to claim 5, characterized in that: The included angle between two gas side spray holes adjacently arranged in the length direction of the main gas nozzle is 0° to 80°.

7. The fan flame burner according to any one of claims 1 to 4, characterized in that: There are two main gas nozzles, which are symmetrically arranged on both sides below the flame stabilizing igniter.

8. The fan flame burner according to any one of claims 1 to 4, characterized in that: The flame stabilizing igniter includes an ignition electrode and an ignition gas burner; the ignition gas burner includes an ignition gas nozzle and an air delivery portion arranged around the radial outer periphery of the ignition gas nozzle, the air delivery portion includes an air-fuel premixing air disk and an air-fuel flame stabilizing air disk arranged in sequence along its gas delivery direction; The air-fuel premixing air disk is provided with a plurality of premixing air holes arranged along the axial direction on the circumference thereof, and the air-fuel stabilizing flame air disk is provided with a plurality of flame stabilizing air holes arranged along the axial direction on the circumference thereof, and the flame stabilizing air holes and the premixing air holes are relatively staggered in the axial direction; the ignition gas burner is provided with a radially arranged premixing gas nozzle between the air-fuel premixing air disk and the air-fuel stabilizing flame air disk, and the premixing gas nozzle is used to deliver a premixed gas jet to mix with the premixed air jet delivered by the premixing air holes to form a premixed air-fuel jet discharged through the flame stabilizing air holes; The outer periphery of the ignition gas burner is located outside the air-fuel stabilizing flame wind disk and is respectively provided with an ignition gas radial nozzle and an ignition gas inclined nozzle. The ignition gas radial nozzle and the ignition gas inclined nozzle are respectively used to transport the ignition gas jet and the premixed air-fuel jet discharged through the flame stabilizing air hole to mix with each other to form a stable flame ignition zone when the igniter is ignited.

9. The fan flame burner according to claim 8, characterized in that: The flame stabilizing igniter further comprises an ignition tube, wherein the ignition electrode, the ignition gas burner and the air delivery portion are arranged in the ignition tube, the air-fuel premixing air disk is connected to the outer periphery of the ignition gas burner, and a premixing air annular gap is formed between the outer end of the air-fuel premixing air disk and the ignition tube, and the premixing air annular gap is used to mix the premixed air jet delivered by the premixing gas nozzle with the premixing gas jet delivered by the premixing gas nozzle to form a premixed air-fuel jet discharged through the flame stabilizing air hole; The flame stabilizing air holes include small flame stabilizing air holes located radially inward and large flame stabilizing air holes located radially outward, and the small flame stabilizing air holes and large flame stabilizing air holes are staggered relative to the premixed air annular gap and the premixed air holes respectively; It also includes a gas delivery portion connected to the inner side of the ignition gas burner, and the gas delivery portion includes a gas output channel communicated with the ignition gas burner and an air output channel communicated with the air delivery portion.

10. Fan-shaped flame combustion equipment, characterized in that, It comprises a furnace wall and the fan-shaped flame burner according to any one of claims 1 to 9 installed in the furnace wall, the main gas nozzle extends outward from the wall surface of the furnace wall, the furnace wall is located outside the fan-shaped flame burner and is respectively provided with a combustion air nozzle corresponding to each gas nozzle, and the gas lateral nozzle hole is used to generate a main gas jet flowing through the combustion air nozzle and the outside of it.

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