Burner array and combustion apparatus

Abstract

Disclosed in the present application are a burner array and a combustion apparatus. The burner array comprises: a burner array body, wherein an air flow channel is formed inside the burner array body; a combustion head, which comprises a flame distribution plate arranged at an air outlet of the air flow channel, wherein the flame distribution plate is provided with a plurality of combustion flame ports in communication with the air flow channel, the side edge of the flame distribution plate is provided with flanges at positions that correspond to at least some of the combustion flame ports, and at least some of the flanges each have a gap formed between same and the side edge of a corresponding combustion flame port; and a metal mesh, which is arranged on the combustion head and corresponding to the plurality of combustion flame ports, wherein part of the side edge of the metal mesh is located at the bottom sides of the flanges.

Description

Fire briquette and combustion equipment

[0001] This application claims priority to Chinese patent application No. 202323209410.0, filed on November 23, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of gas equipment, and in particular to a fire grate and combustion equipment. Background Art

[0003] In the related technologies, in order to reduce the nitrogen oxide content in the exhaust gas of gas water heaters, full premixed combustion technology, rich-lean combustion technology and water-cooled combustion technology are often used. However, due to the high cost and production technology requirements of these technologies, the selling price is also high, the market acceptance is low, which is not conducive to the widespread application of the products. In addition to the above-mentioned related low-nitrogen technologies, low-nitrogen burners with fire holes made of metal mesh are currently also used in products. The fire grate of this type of burner uses metal mesh to make fire holes, but because the combustion area of ​​the metal mesh fire holes increases, when the fan wind speed fluctuates, flame separation and fire failure are often prone to occur, resulting in unstable combustion, poor flue gas emissions, combustion resonance, high noise and other problems. Technical issues

[0004] The main purpose of this application is to propose a fire grate that aims to improve combustion stability, reduce combustion noise, reduce nitrogen oxide emissions, and achieve low-nitrogen combustion. Technical Solutions

[0005] To achieve the above-mentioned purpose, the fire grate proposed in this application includes a fire grate body, a combustion head and a metal mesh.

[0006] In one embodiment, an air flow channel is formed inside the fire bar body.

[0007] In one embodiment, the combustion head includes a fire dividing plate arranged at the air outlet of the air flow channel, the fire dividing plate is provided with a plurality of combustion ports connected to the air flow channel, the side edge of the fire dividing plate is provided with a flange at a position corresponding to at least part of the combustion ports, and a gap is formed between at least part of the flange and the corresponding side edge of the combustion port.

[0008] In one embodiment, a metal mesh is provided on the combustion head and is arranged opposite to the plurality of combustion ports, and a portion of the side edge of the metal mesh is located on the bottom side of the flange.

[0009] In one embodiment, the plurality of combustion ports are arranged at intervals along the length direction of the fire dividing plate, and the two opposite side edges of the fire dividing plate along its width direction are provided with flanges corresponding to the position of each combustion port, and a gap is formed between each flange and the side edge of the corresponding combustion port.

[0010] In one embodiment, the plurality of combustion ports include a first combustion port and a second combustion port, and the two opposite side edges of the fire dividing plate along its width direction are provided with the flange corresponding to the position of each of the first combustion ports, and the gap is formed between each of the flanges and the corresponding side edge of the first combustion port.

[0011] In one embodiment, the first combustion ports and the second combustion ports are arranged alternately and at intervals along the length direction of the fire dividing plate; or, at least two first combustion ports are arranged between any two adjacent second combustion ports.

[0012] In one embodiment, in the length direction of the fire dividing plate, the fire dividing plate has a middle area and two end areas respectively located at both ends of the middle area, and the opening area of ​​a single combustion port located in the end area is smaller than the opening area of ​​a single combustion port located in the middle area.

[0013] In one embodiment, the fire dividing plate includes a plurality of longitudinal ribs arranged at intervals along its length direction, each of the longitudinal ribs extends along the width direction of the fire dividing plate, and the combustion port is formed between any two adjacent longitudinal ribs. The arrangement density of the longitudinal ribs located in the end area is greater than the arrangement density of the longitudinal ribs located in the middle area.

[0014] In one embodiment, the plurality of combustion ports located in the middle area of ​​the fire dividing plate are arranged to form at least one row of ports, and each row of ports includes a third combustion port and a fourth combustion port alternately arranged along the length direction of the fire dividing plate, and the opening area of ​​the third combustion port is larger than the opening area of ​​the fourth combustion port.

[0015] In one embodiment, at least two rows of the burner rows are provided in the middle area of ​​the fire dividing plate, and the at least two rows of the burner rows include a first burner row and a second burner row adjacent to each other in the width direction of the fire dividing plate, and the first burner row and the second burner row both include a third combustion burner and a fourth combustion burner alternately arranged along the length direction of the fire dividing plate, and the third combustion burner in the first burner row is arranged opposite to the fourth combustion burner in the second burner row.

[0016] In one embodiment, the fire dividing plate includes a plurality of transverse ribs arranged along its length direction, each of the transverse ribs extends along the length direction of the fire dividing plate, and any two adjacent transverse ribs are staggered in the width direction of the fire dividing plate, and the third combustion port and the fourth combustion port adjacent to each other in the width direction of the fire dividing plate are separated by the transverse ribs.

[0017] In one embodiment, at least a portion of the side edges of the combustion port are provided with protrusions and / or grooves.

[0018] In one embodiment, the combustion head also includes two side panels respectively arranged on both sides of the width direction of the fire dividing plate, and the two side panels are bent and extended relative to the fire dividing plate toward the air flow channel, and a main air outlet channel is formed between the two adjacent side panels, and the main air outlet channel connects the air flow channel with the multiple combustion flames. A side air outlet channel connected to the air flow channel is formed between the side of each side panel facing away from the other side panel and the fire bar body, and the side air outlet channel is open on the side facing away from the air flow channel to form a flame stabilizing port.

[0019] In one embodiment, a first diversion port is formed between a side of each side plate facing away from the fire dividing plate and the fire bar body, and the first diversion port connects the air flow channel with the side air outlet channel.

[0020] In one embodiment, each of the side plates is provided with a second diversion port, and the second diversion port connects the main air outlet channel with the side air outlet channel.

[0021] In one embodiment, a plurality of lateral bulges are provided at intervals along the length direction of the fire bar body at a portion opposite to each of the side panels, and the air flow channel is formed between each of the lateral bulges and the adjacent side panel; the plurality of lateral bulges opposite to the same side panel include two end lateral bulges respectively located at both ends, and a middle lateral bulge located between the two end lateral bulges; the first diversion port is formed between the side of each side panel facing away from the fire dividing plate and each of the middle lateral bulges; the second diversion port is provided at a portion of each side panel opposite to the end lateral bulge and the middle lateral bulge.

[0022] The present application also provides a combustion device, comprising the fire bar as described above. Beneficial effects

[0023] The technical solution of this application utilizes a fire divider plate in conjunction with a metal mesh, utilizing the fine mesh of the metal mesh to disperse the combustion ports on the fire divider plate into a number of tiny holes. This increases the burner area of ​​the fire grate compared to the linear holes of traditional fire grates. Furthermore, the dispersed holes avoid the problem of locally high temperatures in the linear holes, resulting in a more uniform temperature across the combustion surface of the fire grate, reduced heat intensity, and the elimination of localized high temperatures. This effectively suppresses the formation of nitrogen oxides (NOx), thereby achieving low-NOx combustion. Furthermore, the metal mesh prevents flashback and explosions. The side edges of the fire divider plate are provided with flanges corresponding to at least some of the combustion ports, with a gap formed between at least some of the flanges and the corresponding side edges of the combustion ports. Part of the side edge of the metal mesh is located at the bottom of the flange. The gap between the flange and the side edge of the combustion port increases the perimeter of the contact profile between the flame and the fire divider plate, ensuring more stable combustion and reducing combustion noise. The flanged edges of the fire divider are precisely designed to cover any uneven areas on the metal mesh, ensuring a more consistent and stable combustion area across each fire row. Furthermore, the notched flange design minimizes the impact of the flange on the combustion area, ensuring sufficient combustion surface area and preventing excessive reduction in the combustion area caused by a through flange, which could lead to increased CO and NOx levels in the flue gas. This multifaceted effect improves combustion stability, reduces combustion noise, and reduces nitrogen oxide emissions, achieving low-NOx combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] FIG1 is a schematic structural diagram of an embodiment of a fire bar of the present application;

[0026] Figure 2 is a front view of the fire bar in Figure 1;

[0027] FIG3 is a schematic diagram of the exploded structure of the fire bar in FIG1 ;

[0028] FIG4 is a schematic cross-sectional view of the fire bar in FIG1 ;

[0029] FIG5 is a partial enlarged schematic diagram of point A in FIG4 ;

[0030] Figure 6 is a schematic diagram of the assembly structure of the combustion head and the metal mesh;

[0031] FIG7 is a top view of an embodiment of a combustion head;

[0032] FIG8 is a partial enlarged view of point B in FIG7;

[0033] FIG9 is a top view of another embodiment of a combustion head;

[0034] FIG. 10 is a side view of an embodiment of a burner head.

[0035] Description of Figure Numbers:

[0036] Reference number name Reference number name 100 fire bar 211b second combustion burner 10 fire bar body 211c third combustion burner 101 air flow channel 211d fourth combustion burner 102 air inlet 212 flange 103 air outlet 213 notch 11 lateral convex 214 longitudinal rib 11a end lateral convex 215 transverse rib 11b middle lateral convex 216 protrusion 20 combustion head 22 side plate 21 fire dividing plate 221 second diverter port 21a middle area 201 main air outlet channel 21b end area 202 side air outlet channel 211 combustion burner 203 first diverter port 211a first combustion burner 30 metal mesh

[0037] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Modes for Carrying Out the Invention

[0038] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0041] The present application proposes a fire grate 100, which aims to improve the combustion stability of the fire grate 100 and the combustion equipment having the fire grate 100 by optimizing the structure of the fire grate 100, reduce combustion noise, reduce nitrogen oxide emissions, and achieve low-nitrogen combustion.

[0042] Referring to Figures 1 to 4, in one embodiment of the present application, the fire grate 100 includes a fire grate body 10, a combustion head 20, and a metal mesh 30. The fire grate body 10 has an airflow channel 101 formed therein; the combustion head 20 includes a fire dividing plate 21 disposed at the air outlet 103 of the airflow channel 101, the fire dividing plate 21 having a plurality of combustion ports 211 in communication with the airflow channel 101, and a flange 212 disposed at a position corresponding to at least some of the combustion ports 211 on the side edge of the fire dividing plate 21, with a gap 213 formed between at least some of the flange 212 and the corresponding side edge of the combustion port 211; the metal mesh 30 is disposed on the combustion head 20 and is arranged opposite to the plurality of combustion ports 211, with part of the side edge of the metal mesh 30 located at the bottom side of the flange 212.

[0043] Referring to Figures 3 and 4 , the fire bar body 10 is the main structure of the fire bar 100. An airflow channel 101 is formed within the fire bar body 10. The airflow channel 101 includes an air inlet 102 located on the side of the fire bar body 10 and an air outlet 103 located on the top of the fire bar body 10. The fire bar body 10 may include two half shells that fit together to form the airflow channel 101. The airflow channel 101 may include an ejection channel connected to the air inlet 102, a diversion channel connected to the air outlet 103, and a curved channel connecting the ejection channel and the diversion channel. The half shells can be formed by stamping the corresponding cavity channels from sheet metal, and then the two half shells can be welded together to secure them. The burner head 20 is typically a sheet metal component mounted on the top of the fire bar body 10. It includes a fire divider plate 21 positioned opposite the air outlet 103 of the airflow channel 101. The fire divider plate 21 is provided with multiple combustion ports 211, and the metal mesh 30 is positioned opposite the multiple combustion ports 211. The shapes of the combustion ports 211 include, but are not limited to, square, circular, trapezoidal, or other special shapes. The fire divider plate 21 may include, but is not limited to, a plurality of longitudinal ribs 214 and transverse ribs 215 spaced along its length. The longitudinal and transverse ribs 214 and 215 intersect and enclose the combustion ports 211. An external gas source (such as gas and air) enters the airflow channel 101 through the air inlet 102 of the fire bar body 10. The gas is thoroughly mixed within the airflow channel 101 to form a mixed gas. The mixed gas then flows from the air outlet 103 to the metal mesh 30 and the fire divider plate 21, where it ignites at the combustion ports 211 of the fire divider plate 21, forming a combustion flame.

[0044] Nitrogen oxides (NOx) in gas water heaters are primarily generated by high combustion temperatures. Traditional fire grates typically utilize a single-strip fire hole structure. This structure, however, suffers from a small fire hole area, high fire hole intensity, and poor flue gas performance during instantaneous combustion, resulting in high NOx levels and failing to meet low-NOx emission requirements. In this embodiment, a fire distributor plate 21 with combustion ports 211 is paired with a metal mesh 30 with several fine meshes. The fine mesh of the metal mesh 30 disperses the relatively large opening area of ​​the combustion ports 211 into several small fire holes. Compared to the strip-shaped fire holes of traditional fire grates 100, this increases the burner area of ​​the fire grates 100. Furthermore, the dispersed fire holes avoid the problem of locally high temperatures in the strip-shaped fire holes, resulting in a more uniform temperature across the combustion surface of the fire grates 100. This reduces the heat intensity of the fire holes, eliminates localized high temperatures, and effectively suppresses the generation of nitrogen oxides (NOx), thereby achieving low-NOx combustion. Furthermore, the metal mesh 30 prevents flashback, which can cause explosions and other safety hazards.

[0045] The metal mesh 30 can be located above or below the fire dividing plate 21. In actual application, since the flame burns above the fire dividing plate 21, the requirements for heat resistance and strength of the metal mesh 30 located above the fire dividing plate 21 will be higher than those for heat resistance and strength of the metal mesh 30 located below the fire dividing plate 21. Taking factors such as cost into consideration, the metal mesh 30 can be located below the fire dividing plate 21. The metal mesh 30 and the fire dividing plate 21 can be assembled and fixed by methods including but not limited to welding, riveting, etc. The number of layers of the metal mesh 30 can be single-layer or multi-layer. The mesh number of the metal mesh 30 can be set according to actual needs. For example, the mesh number range of the metal mesh 30 can be selected between 20 mesh and 40 mesh, which can be 20 mesh, 30 mesh, 40 mesh, etc. Exemplarily, the mesh number of the metal mesh 30 can be 30 mesh.

[0046] It should be noted that flanges 212 are provided on the side edge of the fire-dividing plate 21 at locations corresponding to at least some of the combustion ports 211. That is, flanges 212 are provided on the side edge of the fire-dividing plate 21 at locations corresponding to at least one of the combustion ports 211. For example, flanges 212 may be provided on the side edge of the fire-dividing plate 21 at locations corresponding to each of the combustion ports 211. Alternatively, flanges 212 may be provided on the side edge of the fire-dividing plate 21 at locations corresponding to some of the combustion ports 211, while flanges 212 may not be provided on locations corresponding to other portions of the combustion ports 211. Furthermore, the fire-dividing plate 21 may have flanges 212 on one side of its width, or on both sides of its width. A notch 213 is formed between at least some of the flanges 212 and the side edge of the corresponding combustion port 211. That is, a notch 213 is formed between at least one flange 212 on the side edge of the fire-dividing plate 21 and the side edge of the corresponding combustion port 211. For example, when flanges 212 are provided at positions on the side edges of the fire-dividing plate 21 corresponding to the plurality of combustion ports 211, a notch 213 may be formed between each flange 212 and the side edge of the corresponding combustion port 211, or a portion of the flanges 212 may form a notch 213 with the side edge of the corresponding combustion port 211, while another portion of the flanges 212 may be integrally connected to the side edge of the corresponding combustion port 211 without forming a notch 213. Furthermore, a notch 213 may be formed between the flange 212 and one of the side edges of the corresponding combustion port 211, or a notch 213 may be formed between the flange 212 and each of the two opposite edges of the corresponding combustion port 211.

[0047] For example, as shown in FIG7 , a flange 212 is provided on the side edge of the fire-dividing plate 21 corresponding to one of the combustion ports 211. The flange 212 is located within the area enclosed by the combustion ports 211. In the longitudinal direction of the fire-dividing plate 21, the flange 212 is smaller than the dimension between the two opposite side edges of the combustion port 211, so that a gap 213 is formed between each end of the flange 212 and the two side edges of the combustion port 211. Of course, one end of the flange 212 can also extend to connect with one side edge of the combustion port 211, while a gap 213 is formed between the other end of the flange 212 and the other side edge of the combustion port 211. In actual application, the combustion port 211 with the flange 212 can be directly stamped out on the fire-dividing plate 21 made of sheet metal through a stamping process, and a certain gap 213 is left between the flange 212 and the side edge of the combustion port 211, which is simple and convenient to manufacture.

[0048] The fire grate 100 of the present invention comprises a fire grate body 10, a combustion head 20, and a metal mesh 30. An airflow channel 101 is formed within the fire grate body 10. The combustion head 20 includes a fire distributor 21 positioned at the air outlet 103 of the airflow channel 101. The fire distributor 21 is provided with multiple combustion ports 211 communicating with the airflow channel 101. The metal mesh 30 is positioned within the combustion head 20 and covers the multiple combustion ports 211. The fine mesh of the metal mesh 30 disperses the relatively large combustion ports 211 into a plurality of smaller holes. Compared to the strip-shaped holes in conventional fire grate 100, this increases the burner area of ​​the fire grate 100. Furthermore, the dispersed holes avoid the problem of locally high temperatures in strip-shaped holes, resulting in a more uniform temperature across the combustion surface of the fire grate 100. This reduces the heat intensity of the holes, eliminates localized high temperatures, and effectively suppresses the formation of nitrogen oxides (NOx), thereby achieving low-NOx combustion. Furthermore, the metal mesh 30 prevents explosions and other safety hazards caused by flashback. Furthermore, a flange 212 is provided on the side edge of the fire-dividing plate 21 at a position corresponding to at least a portion of the combustion ports 211. A notch 213 is formed between at least a portion of the flange 212 and the corresponding side edge of the combustion ports 211. Part of the side edge of the metal mesh 30 is located on the bottom side of the flange 212. By leaving the notch 213 between the flange 212 and the side edge of the combustion ports 211, the perimeter of the contact profile between the flame and the fire-dividing plate 21 is increased, making the flame combustion more stable and reducing combustion noise. Furthermore, the side edges of the metal mesh 30 are typically uneven, and this unevenness is more pronounced when the metal mesh 30 is provided with multiple layers. Without the flange 212, after the combustion head 20 and the metal mesh 30 are assembled, the side edges may have large gaps in some areas and small gaps in others, resulting in poor consistency. The flange 212 design allows portions of the side edge of the metal mesh 30 to be located at the bottom of the flange 212. This means that the portion of the side edge of the fire divider 211 provided with the flange 212 can precisely cover the uneven portion of the side edge of the metal mesh 30, thereby ensuring more consistent combustion areas within each fire row 100. Furthermore, the flange 212 design with notches 213 can also reduce the impact of the flange 212 on the combustion area, ensuring sufficient combustion area and preventing excessive reduction in combustion area caused by the flange 212, which could lead to increased CO and NOx levels in the flue gas. This, through the combined effects of various factors, can improve combustion stability, reduce combustion noise, and reduce nitrogen oxide emissions, achieving low-nitrogen combustion.

[0049] As shown in Figure 7, in one embodiment, a plurality of the combustion ports 211 are arranged at intervals along the length direction of the fire dividing plate 21, and the fire dividing plate 21 is provided with the flange 212 at the position corresponding to each of the combustion ports 211 on two opposite side edges along the width direction thereof, and a notch 213 is formed between each of the flanges 212 and the side edge of the corresponding combustion port 211.

[0050] In this embodiment, multiple combustion ports 211 are spaced apart along the length of the fire divider plate 21, which can divert gas flow and ensure thorough mixing of air and gas for combustion. The multiple combustion ports 211 can be arranged in a single, double, or multiple rows, with each row comprising multiple combustion ports 211 spaced apart along the length of the fire divider plate 21. Flanges 212 are provided on two opposing side edges along the width of the fire divider plate 21, corresponding to the positions of the combustion ports 211. A notch 213 is formed between each flange 212 and the side edge of the corresponding combustion port 211. This allows the inner edge profile of each combustion port 211 to be lengthened, thereby maximizing the circumference of the contact profile between the flame and the fire divider plate 21, further improving combustion stability and reducing combustion noise. Furthermore, a notch 213 is provided between each flange 212 and the side edge of the corresponding combustion port 211, minimizing the impact of the flange 212 on the combustion area and ensuring sufficient combustion area. In addition, the uneven positions on both sides of the metal mesh 30 in the length direction of the fire dividing plate 21 are covered by multiple flanges 212 as much as possible, thereby further improving the consistency of the combustion area of ​​the fire grate 100.

[0051] As shown in Figure 9, in another embodiment, the plurality of combustion ports 211 include a first combustion port 211a and a second combustion port 211b, and the two opposite side edges of the fire dividing plate 21 along its width direction are provided with the flange 212 corresponding to the position of each first combustion port 211a, and the notch 213 is formed between each flange 212 and the corresponding side edge of the first combustion port 211a; the first combustion ports 211a and the second combustion ports 211b are arranged alternately and at intervals along the length direction of the fire dividing plate 21; or, at least two first combustion ports 211a are arranged between any two adjacent second combustion ports 211b.

[0052] In this embodiment, the fire-dividing plate 21 is provided with a first combustion port 211a and a second combustion port 211b. A flange 212 is provided at the side edge of the fire-dividing plate 21 corresponding to the first combustion port 211a, and a flange 212 may or may not be provided at the side edge corresponding to the second combustion port 211b. The shapes of the first combustion port 211a and the second combustion port 211b may be the same or different. For example, the first combustion port 211a may be a square port, and the second combustion port 211b may be a strip port extending along the width of the fire-dividing plate 21. Furthermore, the areas of the first combustion port 211a and the second combustion port 211b may be the same or different. For example, when the area of ​​the first combustion port 211a is larger than the area of ​​the second combustion port 211b, a flange 212 is provided at the side edge of the fire-dividing plate 21 corresponding to the first combustion port 211a. In order to prevent the flange 212 from excessively blocking the second combustion port 211b, the flange 212 may not be provided at the position corresponding to the second combustion port 211b. In this way, the inner edge profile of the first combustion port 211a can be lengthened, thereby increasing the circumference of the contact profile between the flame and the fire-dividing plate 21, further improving combustion stability and reducing combustion noise. Not providing the flange 212 at the second combustion port 211b can prevent the flange 212 from excessively blocking the second combustion port 211b, which is beneficial to ensuring the overall combustion area of ​​the fire bar 100. For another example, when the areas of the first combustion port 211a and the second combustion port 211b are the same, a flange 212 is provided at the position corresponding to the first combustion port 211a, while no flange 212 is provided at the position corresponding to the second combustion port 211b. In this way, a portion of the combustion area of ​​the first combustion port 211a can be blocked, so that the actual combustion area of ​​the first combustion port 211a is smaller than the actual combustion area of ​​the second combustion port 211b, thereby forming a combustion port 211 with two different combustion areas on the fire dividing plate 21, which is conducive to achieving the cooperation between large and small flames to form a stable flame effect.

[0053] In practical applications, the first combustion ports 211a and the second combustion ports 211b can be arranged in various ways. For example, the first combustion ports 211a and the second combustion ports 211b can be arranged alternately and spaced apart along the length of the fire dividing plate 21. The side edge of the fire dividing plate 21 is provided with flanges 212 at positions corresponding to the first combustion ports 211a, while the positions corresponding to the second combustion ports 211b are not provided with flanges 212. In this way, when the combustion areas of the first combustion port 211a and the second combustion port 211b are different, for example, the combustion area of ​​the first combustion port 211a is larger than the combustion area of ​​the second combustion port 211b, a plurality of combustion units alternating between large and small can be formed in the length direction of the fire dividing plate 21, and the flame on the fire dividing plate 21 can be divided into a large and a small flame. Due to the different sizes of the flames, the boundary conditions of the wind speed when the fire is out of flame are also different. When a flame tends to leave the flame, the surrounding flames can be pulled to form a stable flame, so that the fire bar 100 has a wider range of adaptability to the fan wind speed.

[0054] For another example, at least two first combustion ports 211a can be arranged between any two adjacent second combustion ports 211b. Among them, the side edge of the fire-dividing plate 21 is provided with a flange 212 at the position corresponding to the first combustion port 211a, and the position corresponding to the second combustion port 211b is not provided with a flange 212. Such an arrangement can also separate the fire-dividing plate 21 into combustion units with different areas, thereby improving combustion stability. For example, as shown in Figure 9, four first combustion ports 211a are arranged between any two adjacent second combustion ports 211b, and the four first combustion ports 211a are arranged in an array into two rows and two columns. Each first combustion port 211a is provided with a flange 212 near the side edge of the fire-dividing plate 21, and a gap 213 is left between each flange 212 and the side edge of the corresponding first combustion port 211a.

[0055] The airflow at both ends of the fire bar 100 collides with the boundary wall and flows upward rapidly, that is, the gas flow rate in the two end areas 21b of the fire dividing plate 21 is faster than the gas flow rate in the middle area 21a. The problem of flameout is easy to occur in the two end areas 21b, which is not conducive to combustion stability.

[0056] To address the above-mentioned problem, as shown in FIG6 , in one embodiment, the fire-dividing plate 21 has a middle region 21a and two end regions 21b located at both ends of the middle region 21a along its length. The opening area of ​​a single combustion port 211 located in the end regions 21b is smaller than the opening area of ​​a single combustion port 211 located in the middle region 21a. This makes the opening area of ​​a single combustion port 211 located in the end regions 21b smaller, which helps increase the airflow resistance in the end regions 21b, thereby balancing the gas flow rate and flow velocity of the entire fire-dividing plate 21, avoiding excessively fast gas flow velocity in the two end regions 21b and causing flameout, thereby further achieving a stable combustion effect.

[0057] As shown in Figure 6, in one embodiment, the fire dividing plate 21 includes a plurality of longitudinal ribs 214 arranged at intervals along its length direction, and each of the longitudinal ribs 214 extends along the width direction of the fire dividing plate 21. The combustion port 211 is formed between any two adjacent longitudinal ribs 214, and the arrangement density of the longitudinal ribs 214 located in the end area 21b is greater than the arrangement density of the longitudinal ribs 214 located in the middle area 21a.

[0058] In this embodiment, a plurality of longitudinal ribs 214 arranged at intervals cooperate with each other to form a plurality of combustion ports 211, making the structure of the combustion ports 211 simpler and easier to manufacture. The arrangement density of the longitudinal ribs 214 located in the end regions 21b is greater than the arrangement density of the longitudinal ribs 214 located in the middle region 21a, that is, within a unit area, the number of longitudinal ribs 214 arranged in the end regions 21b is greater, so that the opening area of ​​a single combustion port 211 located in the end regions 21b is smaller than the opening area of ​​a single combustion port 211 located in the middle region 21a, thereby enabling the end regions 21b to increase the airflow resistance through more longitudinal ribs 214, thereby balancing the gas flow and flow rate of the entire fire distribution plate 21, avoiding the occurrence of flameout due to excessive gas flow rate in the two end regions 21b, and further achieving the effect of stabilizing combustion.

[0059] As shown in Figures 6 and 7, in one embodiment, the plurality of combustion ports 211 located in the middle area 21a of the fire dividing plate 21 are arranged to form at least one row of ports, and each row of ports includes a third combustion port 211c and a fourth combustion port 211d alternately arranged along the length direction of the fire dividing plate 21, and the opening area of ​​the third combustion port 211c is larger than the opening area of ​​the fourth combustion port 211d.

[0060] In this embodiment, the plurality of combustion ports 211 located in the middle area 21a of the fire dividing plate 21 can be arranged to form a single row, double row or multiple rows of burner ports. Taking the single row of burner ports as an example, the burner port row includes a plurality of third combustion ports 211c and fourth combustion ports 211d alternately arranged along the length direction of the fire dividing plate 21, and the opening area of ​​the third combustion port 211c is larger than the opening area of ​​the fourth combustion port 211d. In this way, a plurality of combustion units alternately arranged one large and one small can be formed in the length direction of the fire dividing plate 21, and the flame on the fire dividing plate 21 can be divided into a large and a small flame. Due to the different sizes of the flames, the boundary conditions of the wind speed when the flame is out of the flame are also different. When a flame has a tendency to leave the flame, the surrounding flames can be pulled to form a stable flame, so that the fire row 100 has a wider range of adaptability to the wind speed of the fan.

[0061] As shown in Figure 7, in one embodiment, the middle area 21a of the fire dividing plate 21 is provided with at least two rows of the burner rows, and the at least two rows of burner rows include a first burner row and a second burner row adjacent to each other in the width direction of the fire dividing plate 21, and the first burner row and the second burner row both include a third combustion burner 211c and a fourth combustion burner 211d alternately arranged along the length direction of the fire dividing plate 21, and the third combustion burner 211c in the first burner row is arranged opposite to the fourth combustion burner 211d in the second burner row.

[0062] In this embodiment, taking two rows of burner ports as an example, namely the first burner port row and the second burner port row, the first burner port row can be arranged in the length direction of the fire dividing plate 21 according to the rule of the third combustion burner port 211c, the fourth combustion burner port 211d, the third combustion burner port 211c, the fourth combustion burner port 211d..., and the second burner port row can be arranged in the length direction of the fire dividing plate 21 according to the rule of the fourth combustion burner port 211d, the third combustion burner port 211c, the fourth combustion burner port 211d, the third combustion burner port 211c..., so that in the width direction of the fire dividing plate 21, the third combustion burner port 211c in the first burner port row and the fourth combustion burner port 211d in the second burner port row are arranged relative to each other. In this way, not only can a number of combustion units arranged alternately one large and one small be formed in the length direction of the fire dividing plate 21, but also a number of combustion units arranged alternately one large and one small can be formed in the width direction of the fire dividing plate 21, so that the flame on the fire dividing plate 21 can be divided into a large and a small flame along its length and width directions, thereby forming a better flame stabilization effect, further improving combustion stability, and reducing combustion noise.

[0063] As shown in Figure 7, in one embodiment, the fire dividing plate 21 includes a plurality of transverse ribs 215 arranged along its length direction, each of the transverse ribs 215 extends along the length direction of the fire dividing plate 21, and any two adjacent transverse ribs 215 are staggered in the width direction of the fire dividing plate 21, and the third combustion port 211c and the fourth combustion port 211d adjacent to each other in the width direction of the fire dividing plate 21 are separated by the transverse ribs 215.

[0064] In this embodiment, any two adjacent transverse ribs 215 of the fire divider 21 are staggered, meaning that the centerlines of any two adjacent transverse ribs 215 are not co-located. This allows the transverse ribs 215 to separate the third and fourth combustion ports 211c, 211d, which are adjacently located along the width of the fire divider 21. Furthermore, the staggered arrangement of the transverse ribs 215 also creates a staggered arrangement between the third and fourth combustion ports 211c, 211d within the same row of ports. This creates a plurality of combustion units on the fire divider 21, each one large and one small, staggered and spaced apart. This arrangement divides the flame on the fire divider 21 into a large and a small flame, with the large and small flames staggered and separated. If a flame threatens to escape, surrounding flames can pull it back, resulting in a better flame stabilization effect and further expanding the adaptability of the fire bar 100 to fan speeds.

[0065] Of course, in other embodiments, the center lines of the multiple transverse ribs 215 on the fire-dividing plate 21 can also be set to be on the same straight line. In this case, it is only necessary to design the shape of the combustion port 211 on the fire-dividing plate 21 to achieve the effect of dividing the flame on the fire-dividing plate 21 into a large and a small flame, thereby forming stable combustion. For example, as shown in Figure 9, in one embodiment, the multiple combustion ports 211 on the fire-dividing plate 21 include a first combustion unit and a second combustion unit alternately arranged along the length direction of the fire-dividing plate 21, wherein the first combustion unit includes four first combustion ports 211a arranged in an array, and the four first combustion ports 211a are separated from each other by cross-arranged transverse ribs 215 and longitudinal ribs 214, and the second combustion unit includes a single second combustion port 211b. At this time, the center lines of the multiple transverse ribs 215 are on the same straight line. The combustion area of ​​the first combustion unit is larger than the combustion area of ​​the second combustion unit.

[0066] As shown in Figures 7 and 9, in some embodiments, at least a portion of the side edges of the combustion port 211 are provided with protrusions 216 and / or grooves. Providing the protrusions 216 and / or grooves on the side edges of the combustion port 211 can, on the one hand, increase the contact surface between the flame and the surrounding air, thereby ensuring more complete combustion; on the other hand, it can further extend the inner edge profile of the combustion port 211, thereby increasing the circumference of the contact profile between the flame and the fire-distributing plate 21, thereby making the flame more stable.

[0067] Typically, two adjacent combustion ports 211 are separated by transverse ribs 215 or longitudinal ribs 214. In other words, the transverse ribs 215 or longitudinal ribs 214 constitute part of the side edge of the combustion port 211. Considering that the widths of the transverse ribs 215 and longitudinal ribs 214 are generally narrow, in order to avoid significantly affecting their structural strength by providing grooves, protrusions 216 may be optionally provided on the edges of the transverse ribs 215 and / or longitudinal ribs 214. This ensures structural strength while extending the inner edge profile of the combustion port 211. Furthermore, when a portion of the combustion port 211 is provided with a flange 212, the flange 212 can also be considered as part of the side edge of the combustion port 211, and a protrusion 216 may also be provided on the flange 212. The shape of the protrusion 216 can be designed as a hemispherical, tooth-like, or other shape as needed.

[0068] For example, as shown in Figure 7, in one embodiment, the fire-dividing plate 21 is provided with alternating third combustion ports 211c and fourth combustion ports 211d along its length. Each third combustion port 211c has protrusions 216 on opposite sides thereof. For example, as shown in Figure 9, in another embodiment, the fire-dividing plate 21 is provided with first and second combustion ports 211a and 211b, respectively. The second combustion ports 211b extend along the width of the fire-dividing plate 21, and each of the two long sides of the second combustion port 211b has two protrusions 216. Of course, the arrangement of the protrusions 216 is not limited to this; each combustion port 211 may also have a protrusion 216 on its side edge. Furthermore, the number of protrusions 216 within a single combustion port 211 may be one, two, or more. When the number of protrusions 216 within a single combustion port 211 is even, the even number of protrusions 216 may be arranged symmetrically or asymmetrically.

[0069] On the basis of any of the above embodiments, please refer to Figures 3 to 5. In one embodiment, the combustion head 20 also includes two side panels 22 respectively arranged on both sides of the width direction of the fire dividing plate 21, and the two side panels 22 are bent and extended relative to the fire dividing plate 21 toward the air flow channel 101. A main air outlet channel 201 is formed between the two adjacent side panels 22. The main air outlet channel 201 connects the air flow channel 101 with the multiple combustion flames 211. A side air outlet channel 202 connected to the air flow channel 101 is formed between the side of each side panel 22 facing away from the other side panel 22 and the fire bar body 10. The side air outlet channel 202 is open on the side facing away from the air flow channel 101 to form a flame stabilizing port.

[0070] In this embodiment, the two side panels 22 and the fire dividing plate 21 can be integrally bent and formed by a sheet metal plate, or can also be connected and fixed by welding, riveting, etc. In order to simplify the manufacturing process, in one embodiment, the combustion head 20 is a sheet metal part, which is integrally bent to form the fire dividing plate 21 and the two side panels 22, and then the corresponding combustion flames 211 are punched out on the fire dividing plate 21. During assembly, the combustion head 20 is placed in the air outlet 103 of the fire bar body 10, and then the two side panels 22 are respectively welded and fixed to the two half shells of the fire bar body 10. Through the cooperation between the combustion head 20 and the fire bar body 10, the area of ​​the air outlet 103 of the fire bar body 10 can be divided into a main air outlet channel 201 and side air outlet channels 202 located on both sides of the main air outlet channel 201. In this way, the gas and air are fully mixed in the airflow channel 101 of the fire bar body 10 to form a mixed gas. The mixed gas is then transported to the position of the combustion head 20 for diversion. Part of the mixed gas is transported through the main gas outlet channel 201 to the combustion port 211 of the fire distributor 21 to burn and form the main flame. The other part of the mixed gas is output through the side gas outlet channels 202 on both sides and burns at the flame stabilization port to form side flames. The side flames on both sides can stabilize the main flame on the fire distributor 21, further improving combustion stability.

[0071] As shown in Figures 2 and 5, in one embodiment, multiple lateral bumps 11 can be spaced apart along the length of the fire bar body 10 at locations opposite each side panel 22. These bumps 11 can be formed by stamping outward from the inside of the fire bar body 10. A side air outlet channel 202 is formed between each lateral bump 11 and the side panel 22. Furthermore, a recessed portion, recessed toward the side panel 22, is formed between any two adjacent lateral bumps 11. This recess can abut against the side panel 22, forming a welding point for welding the side panel 22 to the fire bar body 10.

[0072] As shown in Figure 5, in one embodiment, a first diversion opening 203 is formed between the side of each side panel 22 facing away from the fire dividing plate 21 and the fire bar body 10. The first diversion opening 203 connects the airflow channel 101 with the side air outlet channel 202. In this embodiment, a certain gap is formed between the side of the side panel 22 facing away from the fire dividing plate 21 (i.e., the bottom side of the side panel 22) and the fire bar body 10. This gap is the first diversion opening 203. During the upward transport of the mixed gas in the airflow channel 101, some of the gas can enter the side air outlet channel 202 through the first diversion opening 203, and then be transported to the flame stabilization port through the side air outlet channel 202 to burn and form a side flame, thereby stabilizing the main flame on the fire dividing plate 21. In one embodiment, a guide slope is provided at a position corresponding to the first diversion port 203 of the fire bar body 10. The guide slope extends from the first diversion port 203 toward the side air outlet channel 202 and is tilted upward. In this way, the airflow entering the first diversion port 203 can be better guided upward to the flame stabilizing port; and the guide slope can also guide the airflow from the first diversion port 203 to the side wall of the fire bar body 10, and then the airflow can flow upward along the side wall to the flame stabilizing port, thereby avoiding the airflow speed through the side air outlet channel 202 being too fast, which is beneficial to further improve the flame stabilizing effect.

[0073] As shown in Figure 5, in one embodiment, each of the side panels 22 is provided with a second diverter port 221, which connects the main gas outlet channel 201 with the side gas outlet channel 202. In this embodiment, each side panel 22 is provided with a second diverter port 221. After the mixed gas in the airflow channel 101 is transported upward to the main gas outlet channel 201 between the two side panels 22, a portion of the mixed gas can continue to be transported upward to the combustion port 211 for combustion, and another portion can enter the side gas outlet channel 202 through the second diverter port 221, and then be transported to the flame stabilization port through the side gas outlet channel 202 for combustion to form a side flame, thereby having a flame stabilization effect on the main flame on the fire-dividing plate 21.

[0074] Among them, the number of second diversion ports 221 on each side panel 22 can be set according to actual needs, and can be single or multiple. In one embodiment, each side panel 22 is provided with a plurality of second diversion ports 221 at intervals along its length direction. For example, a plurality of lateral bulges 11 are provided at intervals along its length direction at positions opposite to the fire bar body 10 and each side panel 22, and a side air outlet channel 202 is formed between each lateral bulge 11 and the side panel 22. Then, a single or multiple second diversion ports 221 can be provided at positions corresponding to the lateral bulges 11 on each side panel 22. Among them, the shape of the second diversion ports 221 includes but is not limited to circular, square, long strip, triangular, trapezoidal or other special-shaped structures. When a plurality of second diversion ports 221 are provided on the side panel 22, the shapes of the plurality of second diversion ports 221 can be the same or different. For example, as shown in Figure 10, each side panel 22 is provided with multiple second diversion openings 221 along its length. The second diversion openings 221 on both sides are strip-shaped openings extending along the length of the side panel 22, while the second diversion openings 221 in the middle are circular openings. In one embodiment, each side panel 22 is provided with a single strip-shaped second diversion opening 221 at positions corresponding to the side air outlet channels 202 at both ends of the length of the fire bar body 10, and each side panel 22 is provided with three circular second diversion openings 221 arranged side by side at positions corresponding to the side air outlet channels 202 at other central positions.

[0075] In one embodiment, as shown in Figure 5, in one embodiment, a first diversion port 203 is formed between the side of each side panel 22 facing away from the fire dividing plate 21 and the fire bar body 10, and each side panel 22 is provided with a second diversion port 221, and the second diversion port 221 connects the main air outlet channel 201 with the side air outlet channel 202.

[0076] In this embodiment, during the upward flow of the mixed gas within the airflow channel 101, some of the gas can enter the side outlet channel 202 via the first diversion port 203, while another portion can enter the side outlet channel 202 via the second diversion port 221. This creates a graded gas outlet effect on the side of the fire grate 100, ensuring that gas flows out and burns (side flames) on the sides of the fire grate 100 under varying load conditions. This not only stabilizes the main flame, but also increases the amount of gas flowing to the sides, fully utilizing the space on the sides of the fire grate 100 and increasing the total combustion area, thereby lowering the amount of nitrogen oxides (NOx) in the combustion exhaust gas. NOx in typical gas water heaters is primarily generated by high combustion temperatures. The side flames share some of the gas from the main flame, reducing the heat intensity of the fire holes in the main flame area, lowering the temperature in the main flame area and effectively suppressing NOx formation.

[0077] As shown in Figures 2 to 5, in one embodiment, a plurality of lateral bulges 11 are provided at intervals along the length direction of the fire bar body 10 at a portion opposite to each of the side panels 22, and the air flow channel 101 is formed between each of the lateral bulges 11 and the adjacent side panel 22; the plurality of lateral bulges 11 opposite to the same side panel 22 include two end lateral bulges 11a respectively located at both ends, and a middle lateral bulge 11b located between the two end lateral bulges 11a; the first diversion port 203 is formed between the side of each side panel 22 facing away from the fire dividing plate 21 and each of the middle lateral bulges 11b; the second diversion port 221 is provided at a portion of each side panel 22 opposite to the end lateral bulge 11a and the middle lateral bulge 11b.

[0078] In this embodiment, due to the structural limitations of the fire bar body 10, the height of the end lateral convex bumps 11a is lower than the height of the middle lateral convex bumps 11b. In order to better match the airflow of the lateral convex bumps 11a at different locations, a first diversion port 203 is formed between the side of each side plate 22 facing away from the fire dividing plate 21 and each middle lateral convex bump 11b, and a second diversion port 221 is provided at the location opposite to each middle lateral convex bump 11b, thereby forming a secondary diversion effect at the location where the middle lateral convex bump 11b is located. However, no first diversion port 203 is formed between the side of each side plate 22 facing away from the fire dividing plate 21 and each end lateral convex bump 11a, and only a second diversion port 221 is provided at the location opposite to each side lateral convex bump 11a, that is, only a primary diversion is achieved at the location where the end lateral convex bump 11a is located. In one embodiment, the second diversion openings 221 corresponding to each end lateral protrusion 11a are configured as strip-shaped openings, which are simple in structure and easy to manufacture. In another embodiment, the second diversion openings 221 corresponding to each central lateral protrusion 11b are configured as circular openings, which are simple in structure and easy to manufacture, and allow for easy adjustment of the opening area and number as needed to achieve airflow regulation. For example, each side plate 22 may have three circular second diversion openings 221 arranged side by side in the area corresponding to each central lateral protrusion 11b.

[0079] The present application also proposes a combustion device, which includes a fire bar 100. The specific structure of the fire bar 100 refers to the above embodiment. Since the combustion device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0080] As an example, the combustion device may be a burner, such as an atmospheric burner, a rich-lean burner, a water-cooled burner or other types of burners.

[0081] As an example, the combustion equipment may also be a gas water heater, boiler or other equipment.

[0082] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A fire briquette, wherein: The fire row comprises: The fire bar body has an air flow channel formed inside; The combustion head comprises a fire dividing plate arranged at the air outlet of the air flow channel, the fire dividing plate is provided with a plurality of combustion burners connected with the air flow channel, the side edge of the fire dividing plate is provided with flanges at positions corresponding to at least part of the combustion burners, and a gap is formed between at least part of the flanges and the corresponding side edges of the combustion burners; and A metal mesh is arranged on the combustion head and is arranged opposite to the plurality of combustion burners, and a part of the side edge of the metal mesh is located on the bottom side of the flange.

2. The fire bar according to claim 1, wherein: The plurality of combustion ports are arranged at intervals along the length direction of the fire dividing plate, and the two opposite side edges of the fire dividing plate along its width direction are provided with flanges corresponding to the position of each combustion port, and a gap is formed between each flange and the side edge of the corresponding combustion port.

3. The fire bar according to claim 1 or 2, wherein: The plurality of combustion ports include a first combustion port and a second combustion port, the fire dividing plate is provided with flanges at two opposite side edges along the width direction thereof corresponding to the position of each of the first combustion ports, and a notch is formed between each flange and the side edge of the corresponding first combustion port; The first combustion ports and the second combustion ports are arranged alternately and at intervals along the length direction of the fire dividing plate; or, at least two of the first combustion ports are arranged between any two adjacent second combustion ports.

4. The fire bar according to any one of claims 1 to 3, wherein: In the length direction of the fire dividing plate, the fire dividing plate has a middle area and two end areas respectively located at both ends of the middle area, and the opening area of ​​a single combustion port located in the end area is smaller than the opening area of ​​a single combustion port located in the middle area.

5. The fire bar according to claim 4, wherein: The fire dividing plate includes a plurality of longitudinal ribs arranged at intervals along its length direction, each of the longitudinal ribs extending along the width direction of the fire dividing plate, and the combustion port is formed between any two adjacent longitudinal ribs. The arrangement density of the longitudinal ribs located in the end area is greater than the arrangement density of the longitudinal ribs located in the middle area.

6. The fire bar according to any one of claims 1 to 5, wherein: The multiple combustion ports located in the middle area of ​​the fire dividing plate are arranged to form at least one row of ports, and each row of ports includes third combustion ports and fourth combustion ports alternately arranged along the length direction of the fire dividing plate, and the opening area of ​​the third combustion port is larger than the opening area of ​​the fourth combustion port.

7. The fire bar according to claim 6, wherein: At least two rows of burner ports are arranged in the middle area of ​​the fire dividing plate, and the at least two rows of burner ports include a first burner port row and a second burner port row adjacent to each other in the width direction of the fire dividing plate, and the first burner port row and the second burner port row both include third combustion burner ports and fourth combustion burner ports alternately arranged along the length direction of the fire dividing plate, and the third combustion burner port in the first burner port row is arranged opposite to the fourth combustion burner port in the second burner port row.

8. The fire bar according to claim 7, wherein: The fire dividing plate includes a plurality of transverse ribs arranged along its length direction, each of the transverse ribs extending along the length direction of the fire dividing plate, any two adjacent transverse ribs are staggered in the width direction of the fire dividing plate, and the third combustion port and the fourth combustion port adjacent to each other in the width direction of the fire dividing plate are separated by the transverse ribs.

9. The fire bar according to any one of claims 1 to 8, wherein: At least part of the side edges of the combustion burner are provided with protrusions and / or grooves.

10. The fire bar according to any one of claims 1 to 9, wherein: The combustion head also includes two side panels respectively arranged on both sides of the width direction of the fire dividing plate, and the two side panels are bent and extended relative to the fire dividing plate toward the airflow channel, and a main air outlet channel is formed between the two adjacent side panels, and the main air outlet channel connects the airflow channel with the multiple combustion flames. A side air outlet channel connected to the airflow channel is formed between the side of each side panel facing away from the other side panel and the fire bar body, and the side air outlet channel facing away from the airflow channel is open to form a flame stabilizing port.

11. The fire bar according to claim 10, wherein: A first diversion opening is formed between a side of each side plate facing away from the fire distribution plate and the fire bar body, and the first diversion opening connects the air flow channel with the side air outlet channel; And / or, each of the side plates is provided with a second diversion port, and the second diversion port connects the main air outlet channel with the side air outlet channel.

12. The fire bar of claim 11, wherein: A plurality of lateral bulges are provided at intervals along the length direction of the fire bar body at a position opposite to each of the side panels, and the air flow channel is formed between each of the lateral bulges and the adjacent side panel; the plurality of lateral bulges opposite to the same side panel include two end lateral bulges respectively located at both ends, and a middle lateral bulge located between the two end lateral bulges; the first diversion port is formed between the side of each side panel away from the fire dividing plate and each of the middle lateral bulges; the second diversion port is provided at a position of each side panel opposite to the end lateral bulge and the middle lateral bulge.

13. A combustion device, wherein: The combustion device comprises a fire bar as claimed in any one of claims 1 to 12.

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