Array micro-premixed combustor

Abstract

The present application provides an array type micro-premix burner, which comprises a premixing assembly, a gas supply part and a combustion chamber assembly; the premixing assembly comprises a shell and a premixing pipe array, the premixing pipe array comprises a first mounting plate, a partition plate and at least one fuel premixing pipe with an open end, the first mounting plate and the partition plate are connected with the fuel premixing pipe respectively, and the partition plate is located at the middle part of the fuel premixing pipe; the gas supply part is provided with at least one fuel gas inlet which is communicated with a fuel cavity; the combustion chamber assembly is connected with the premixing assembly and cooperates with at least a part of the premixing assembly to form an open-end combustion chamber, and the open end of the fuel premixing pipe is communicated with the combustion chamber. The array type micro-premix burner can effectively prevent the backfire phenomenon during the combustion of hydrogen-rich / pure hydrogen fuel, improve the working stability of the micro-premix burner, improve the hydrogen / air mixing uniformity of the micro-premix burner nozzle, effectively reduce the NOx emission, and improve the safety and low emission of the hydrogen-rich / pure hydrogen fuel combustion.

Description

Technical Field

[0001] This invention relates to the field of burner technology, and more specifically, to an array-type micro-premixed burner. Background Technology

[0002] Gas turbines are highly efficient and clean power machines, and are currently the most efficient heat-to-work conversion power generation equipment. To meet the demands for lower nitrogen oxide emissions and reduced carbon emissions, the development of gas turbines is trending towards low emissions, high parameters, and flexible fuel operation. One effective method to achieve low carbon emissions is to use hydrogen-rich fuels for combustion. Using hydrogen-rich fuels can increase the peak temperature of the gas combustion gas, enabling gas turbines to operate at higher parameters. However, higher gas combustion gas temperatures increase NOx emissions and pose a risk of backfire. Therefore, the widely used swirl-lean premixed combustion technology is no longer fully adapted to these new demands, necessitating the development of new combustion organization technologies specifically for hydrogen-rich fuels.

[0003] Although some premixed burners already exist in the existing technology, the combustion methods used in the existing technology may not achieve free mixing of fuels, increasing the local equivalence ratio at the outlet and causing high NOx emissions; or the internal overall mixing structure is large, which poses an extremely high safety risk if backfire occurs when burning hydrogen-rich or pure hydrogen fuels.

[0004] Therefore, existing technologies suffer from poor combustion emissions and unstable flames due to uneven mixing during the micro-premixed combustion of pure hydrogen fuel. Summary of the Invention

[0005] The main objective of this invention is to provide an array-type micro-premixed burner to solve the problems of uneven mixing leading to poor combustion emissions and unstable flames in the micro-premixed combustion of pure hydrogen fuel in the prior art.

[0006] To achieve the above objectives, according to one aspect of the present invention, an array-type micro-premixed burner is provided, comprising:

[0007] A premixing assembly includes a housing and a premixing tube array. The housing is a cylindrical structure open at both ends, and a first chamber is formed inside the cylindrical structure. The premixing tube array includes a first mounting plate, a partition plate, and at least one fuel premixing tube open at one end. The first mounting plate and the partition plate are respectively connected to the fuel premixing tube. At least a portion of the premixing tube array is capable of being accommodated in the first chamber. The partition plate is located in the middle of the fuel premixing tube and can be sealed to the inner wall of the housing, thereby dividing the first chamber into an air chamber and a fuel chamber. The first mounting plate is located near the opening of the fuel premixing tube, connected to the housing, and seals the air chamber. The housing is provided with at least one air inlet communicating with the air chamber. The fuel premixing tube is provided with a first hole array and a second hole array, the first hole array being located in the air chamber and the second hole array being located in the fuel chamber.

[0008] An air supply unit is connected to one end of the housing and is capable of sealing the fuel chamber. The air supply unit is provided with at least one fuel inlet that communicates with the fuel chamber.

[0009] A combustion chamber assembly, which is connected to the premixing assembly and together with at least a portion of the premixing assembly forms a combustion chamber with one end open, wherein the opening of the fuel premixing pipe communicates with the combustion chamber, and at least a portion of the combustion chamber assembly is made of a transparent material.

[0010] Furthermore, the premixed array includes 9 fuel premixed tubes, which form a 3*3 premixed array.

[0011] Furthermore, the nine fuel premixing pipes are arranged in a uniformly distributed square pattern.

[0012] Furthermore, the volume of the air chamber is larger than the volume of the fuel chamber.

[0013] Furthermore, both the first aperture array and the second aperture array include a plurality of through holes uniformly distributed on the sidewall of the fuel premixing pipe.

[0014] Furthermore, both the first aperture array and the second aperture array include multiple layers of through holes uniformly distributed on the sidewall of the fuel premixing pipe, with the through holes in the same layer spaced 90 degrees apart from each other and uniformly distributed circumferentially in the fuel premixing pipe.

[0015] Furthermore, the combustion chamber assembly includes:

[0016] The bracket is provided in multiple ways, and each bracket is provided with two snap-fit ​​slots;

[0017] The sidewalls are multiple in number, and the two ends of each sidewall are respectively engaged in the engaging grooves, and are connected end to end in sequence.

[0018] A second mounting plate is connected to the first mounting plate. The second mounting plate is provided with an opening for the premixed fuel in the fuel premixing pipe to pass through. The side of the second mounting plate away from the first mounting plate is provided with a square-shaped mounting groove. The mounting groove is configured to accommodate and fix the end of the bracket and the side wall.

[0019] Furthermore, the sidewall is made of high-transparency quartz glass.

[0020] Furthermore, the first chamber has a circular cross-section, and the fuel premixing pipe also has a circular cross-section.

[0021] Furthermore, a sealing portion is provided on the partition plate.

[0022] Furthermore, the open end of the fuel premixing pipe protrudes from the surface of the first mounting plate.

[0023] Furthermore, the premixing component is connected to the combustion component via a flange, and the premixing component is connected to the gas supply unit via a flange.

[0024] By applying the technical solution of this invention, an array-type premixed tube array is set up, and an air jet crossflow fuel mixing mode is adopted, which improves the uniformity of hydrogen / air fuel mixture, avoids the formation of local high-temperature zones, effectively reduces NOx emissions, and avoids fuel diffusion to the air side, thus mitigating the risk of explosion. The array-type nozzle can effectively increase the average flow velocity at the outlet of the hydrogen-rich / pure hydrogen fuel-air mixture, preventing hydrogen flame backfire that could burn out the burner. By setting up a first and second orifice array, the collision effect of the gas is effectively enhanced, forming high turbulence intensity and stronger vortices inside the fuel premixing tube, which can effectively promote the mixing uniformity and mixing efficiency of hydrogen-rich / pure hydrogen fuel. Furthermore, all jet micro-orifices are symmetrically arranged, forming a symmetrical and stable flow field inside the premixed tube array, ensuring that local high temperatures do not damage the burner during combustion and preventing flame flickering. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0026] Figure 1 A schematic diagram of the array-type micro-premixed burner according to the present invention is shown;

[0027] Figure 2A cross-sectional view of the array-type micro-premixed burner according to the present invention is shown;

[0028] Figure 3 A schematic diagram of the premixed tube array of the array-type micro premixed burner according to the present invention is shown;

[0029] Figure 4 It shows Figure 3 A sectional view along section AA;

[0030] Figure 5 A top view of the premixed tube array of the array-type micro premixed burner according to the present invention is shown;

[0031] Figure 6 A schematic diagram of the housing structure of the array-type micro-premixed burner according to the present invention is shown;

[0032] Figure 7 It shows Figure 6 A sectional view along section BB.

[0033] Figure 8 A schematic diagram of the gas supply section of the array-type micro-premixed burner according to the present invention is shown;

[0034] Figure 9 It shows Figure 8 A sectional view along section CC;

[0035] Figure 10 A schematic diagram of the structure of the second mounting plate of the array-type micro-premixed burner according to the present invention is shown;

[0036] Figure 11 It shows Figure 9 A sectional view along section DD.

[0037] The above figures include the following reference numerals:

[0038] 10. Premixing assembly; 11. Housing; 111. First chamber; 1111. Air chamber; 1112. Fuel chamber; 112. Third mounting plate; 113. Fourth mounting plate; 114. Air inlet; 12. Premixing tube array; 121. First mounting plate; 122. Separator plate; 123. Fuel premixing tube; 1231. First perforation array; 1232. Second perforation array; 20. Air supply section; 21. Fuel inlet; 22. Fifth mounting plate; 30. Combustion chamber assembly; 31. Bracket; 32. Side wall; 33. Second mounting plate; 331. Mounting groove 331. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0042] To address the issues of uneven mixing leading to poor combustion emissions and unstable flames in the micro-premixed combustion of pure hydrogen fuel in existing technologies, this application provides an array-type micro-premixed burner.

[0043] like Figures 1 to 11As shown, the first embodiment of this application provides an array-type micro-premixed burner, including a premixing component 10, an air supply section 20, and a combustion chamber assembly 30. The premixing component 10 includes a housing 11 and a premixing tube array 12. The housing 11 is a cylindrical structure open at both ends, and a first chamber 111 is formed inside the cylindrical structure. At least a portion of the premixing tube array 12 can be accommodated within the first chamber 111. The premixing tube array 12 includes a first mounting plate 121, a partition plate 122, and at least one fuel premixing tube 123 open at one end. The first mounting plate 121 and the partition plate 122 are respectively connected to the fuel premixing tube 123. The partition plate 122 is located in the middle of the fuel premixing tube 123 and can be sealed to the inner wall of the housing 11, thereby dividing the first chamber 111 into an air chamber 1111 and a fuel chamber 1112 located on both sides of the partition plate 122. The first mounting plate 121 is located on the side near the opening of the fuel premixing pipe 123. The first mounting plate 121 is connected to the housing 11, thereby sealing the air chamber 1111. The housing 11 is provided with at least one air inlet 114 communicating with the air chamber 1111, so that fresh air or oxygen from outside can enter the air chamber 1111 through the air inlet 114.

[0044] The air inlets 114 can be four in number, evenly distributed around the outer periphery of the housing 11. The fuel premixing pipe 123 has a first aperture array 1231 and a second aperture array 1232. The first aperture array 1231 is located within the air cavity 1111, and the second aperture array 1232 is located within the fuel cavity 1112. This allows the gases in the air cavity 1111 and the fuel cavity 1112 to enter the fuel premixing pipe 123 for mixing, respectively, through the first aperture array 1231 and the second aperture array 1232. The gas supply unit 20 is connected to the end of the housing 11 away from the first mounting plate 121 and can close the fuel cavity 1112. The gas supply unit 20 has at least one fuel inlet 21 communicating with the fuel cavity 1112, allowing gaseous fuel to enter the fuel cavity 1112 through the fuel inlet 21.

[0045] Combustion chamber assembly 30 is connected to premix assembly 10 and together with at least a portion of premix assembly 10 forms a combustion chamber with one end open. The opening of fuel premix pipe 123 is connected to the combustion chamber. At least a portion of combustion chamber assembly 30 is made of transparent material.

[0046] Furthermore, the premixed tube array 12 is machined and welded from 316 stainless steel, which is more corrosion-resistant at high temperatures, to improve the strength and service life of the premixed tube array 12. The premixed tube array 12 includes 9 fuel premixed tubes 123, which form a 3*3 premixed tube array 12 and are located at the center of the first chamber 111; this arrangement is more conducive to stabilizing the flow field structure inside the burner.

[0047] Specifically, the nine fuel premixing pipes 123 are arranged in a square with even distribution, which makes it easier to improve the consistency of processing.

[0048] To further improve the mixing effect of fuel and air, the air chamber 1111 and the fuel chamber 1112 are set separately. The fuel chamber 1112 is connected to the fuel inlet 21 and fuel is introduced into it. This helps to reduce nitrogen oxide emissions, maintain a uniform temperature distribution inside the combustion chamber, and improve the service life of the burner.

[0049] The partition plate 122 is also provided with a sealing part to prevent backfire and explosion under extreme operating conditions; preferably, the sealing part can be a sealing ring, such as a rubber ring. The open end of the fuel premixing pipe 123 is located in the combustion chamber. Preferably, the open end of the fuel premixing pipe 123 protrudes from the surface of the first mounting plate 121, thereby forming a raised lip structure, which is used to stabilize the combustion at the root of the hydrogen-rich / pure hydrogen fuel flame, anchoring the flame near the lip and preventing local flameout that could cause the flame to be blown out.

[0050] In one specific embodiment of this application, both the first aperture array 1231 and the second aperture array 1232 include a plurality of through holes uniformly distributed on the sidewall of the fuel premixing tube 123. Preferably, both the first aperture array 1231 and the second aperture array 1232 include multiple layers of through holes uniformly distributed on the sidewall of the fuel premixing tube 123, with the through holes in the same layer spaced 90 degrees apart from each other and uniformly distributed circumferentially on the fuel premixing tube 123. For example, the first aperture array 1231 may be designed with 12 symmetrically distributed air jet microholes on each individual fuel premixing tube 123, and the second aperture array 1232 may be designed with 16 symmetrically distributed hydrogen-rich / pure hydrogen fuel jet microholes on each individual fuel premixing tube 123; thereby enhancing the turbulence intensity and vortex intensity inside the mixing channel and promoting the mixing of air and hydrogen-rich / pure hydrogen fuel.

[0051] The gas chamber is installed outside the fuel premixing pipe 123 and can form a stable gas pressure to provide a stable and continuous supply of fuel and air to the inside of the fuel premixing pipe 123. The through holes located on the side wall of the fuel premixing pipe 123 are arranged symmetrically to ensure the symmetry of the internal flow field, thereby ensuring that there will be no uneven gas supply.

[0052] The combustion chamber assembly 30 includes a bracket 31, a sidewall 32, and a second mounting plate 33. Multiple brackets and sidewalls 32 are provided. The bracket 31 has two snap-fit ​​grooves, and both ends of the sidewalls 32 are snapped into these grooves, connected end-to-end. The second mounting plate 33 is connected to a first mounting plate 121. The second mounting plate 33 has an opening to allow premixed fuel from the fuel premixing pipe 123 to pass through. On the side of the second mounting plate 33 away from the first mounting plate 121, there are square-distributed mounting grooves 331 configured to accommodate and fix the ends of the bracket 31 and the sidewalls. Preferably, the first mounting plate 121 and the second mounting plate 33 can be flanges.

[0053] To facilitate multi-parameter laser diagnostics, sidewall 32 is made of high-transparency quartz glass. During multi-parameter laser diagnostics, the high-transparency quartz glass ensures the penetration of pulsed laser light and the capture of diagnostic signals such as component composition.

[0054] In one specific embodiment, four supports 31 and four side walls 32 are provided. The side walls 32 have a rectangular structure, and the four side walls 32 are connected at their ends to form a combustion chamber with a rectangular cross-section. During use, the bottoms of the supports 31 and the side walls 32 are respectively inserted into the mounting slots 331 of the second mounting plate 33, thereby providing a stable thermal atmosphere for the combustion of pure hydrogen fuel.

[0055] Furthermore, the housing 11 also includes a third mounting plate 112 and a fourth mounting plate 113 located at both ends of the cylindrical structure. The third mounting plate 112 is used for fixed connection with the first mounting plate 121, and is also used for fixed connection with the air supply unit 20. Preferably, bolt holes are evenly distributed on the third mounting plate 112 and the fourth mounting plate 113, and fixed connections between the housing 11 and the premixed tube array 12, and between the housing 11 and the air supply unit 20, are achieved through bolt connections. Preferably, the third mounting plate 112 and the fourth mounting plate 113 can be flanges.

[0056] The gas supply unit 20 includes a fifth mounting plate 22 and a fuel inlet 21, wherein the fuel inlet 21 is located at the center of the fifth mounting plate 22. The fifth mounting plate 22 is fixedly connected to the fourth mounting plate 113, thereby sealing the fuel chamber 1112. Arranging the fuel inlet 21 at the center ensures that the fuel enters evenly into each individual fuel premixing tube 123 of the premixing tube array 12.

[0057] In one specific embodiment of this application, the premixed tube array 12 is composed of nine fuel premixed tubes 123. The open ends of the fuel premixed tubes 123 form nine nozzles, arranged in a 3x3 square pattern. The first connecting plate is 5mm thick, the wall thickness of the fuel premixed tube 123 is 1.5mm, the bottom thickness is 1mm, the internal depth of the fuel premixed tube 123 is 69mm, and the overall length is 70mm. The nozzle lip protrusion height is 2mm, the inner diameter of a single nozzle is 3mm, and the center-to-center distance between two nozzles is 10mm. A partition plate 122 is located in the middle of the premixed tube array 12. A rubber ring is installed on the partition plate 122. The partition plate 122 is 5mm thick. Each individual fuel premixed tube 123 on the upper part of the partition plate 122 is designed with 12 symmetrically distributed air jet micro-holes. The upper length of the partition plate 122 is 35mm, meaning the length of the air cavity 1111 is 35mm. The lower part is designed with 16 symmetrically distributed micro-jet holes for hydrogen-rich / pure hydrogen fuel. The lower part of the sealing section is 23mm long, which enhances the turbulence intensity and vortex intensity inside the mixing channel and promotes the mixing of air and hydrogen-rich / pure hydrogen fuel. The first connecting plate is a 120mm diameter metal disk with 6 m8 threaded holes distributed in a circle with a radius of 47mm along the upper edge of the metal disk.

[0058] The housing 11 is installed outside the premixed tube array 12, and a stable gas pressure can be formed inside to provide a stable and continuous supply of air and fuel to the array mixing channel, ensuring that there is no uneven gas supply. The interior of the housing 11 is a cylindrical cavity with a diameter of 50 mm and a height of 85 mm, and a wall thickness of 5 mm. The third connecting plate is a metal outer disk with a diameter of 120 mm, and six m8 threaded holes are distributed in a circle with a radius of 47 mm along the upper edge of the metal outer disk.

[0059] The gas supply unit 20 is installed directly below the housing 11 and is used to introduce hydrogen-rich / pure hydrogen fuel into the lower half of the gas chamber, ensuring that the fuel gas can enter each mixing channel evenly. The fifth connecting plate is a 120mm diameter metal outer disk with six m8 threaded holes distributed in a circle with a radius of 47mm along the upper edge of the metal outer disk.

[0060] The optical window bracket 31 is 80mm high, and the high-transparency quartz glass measures 46mm*3mm*80mm.

[0061] The array-type micro-premixed burner provided in this application improves the uniformity of hydrogen / air fuel mixing by setting up an array of premixing tubes and adopting an air jet crossflow fuel mixing mode, avoiding local high-temperature zones, effectively reducing NOx emissions, and preventing fuel diffusion to the air side, thus avoiding the risk of explosion. The array nozzles can effectively increase the average flow velocity at the outlet of the hydrogen-rich / pure hydrogen fuel-air mixture, preventing hydrogen flame backfire that could burn out the burner. By setting up a first and second orifice array, the collision effect of the gas is effectively enhanced, forming high turbulence intensity and stronger vortices inside the fuel premixing tube, which can effectively promote the uniformity and mixing efficiency of hydrogen-rich / pure hydrogen fuel. Furthermore, all the jet micro-holes are symmetrically arranged, forming a symmetrical and stable flow field inside the premixing tube array, ensuring that local high temperatures do not damage the burner during combustion and preventing flame flickering.

[0062] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0063] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0064] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An array-type micro-premixed burner, characterized in that, include: A premixing assembly includes a housing and a premixing tube array. The housing is a cylindrical structure open at both ends, and a first chamber is formed inside the cylindrical structure. The premixing tube array includes a first mounting plate, a partition plate, and at least one fuel premixing tube open at one end. The first mounting plate and the partition plate are respectively connected to the fuel premixing tube. At least a portion of the premixing tube array is capable of being accommodated in the first chamber. The partition plate is located in the middle of the fuel premixing tube and can be sealed to the inner wall of the housing, thereby dividing the first chamber into an air chamber and a fuel chamber. The first mounting plate is located near the opening of the fuel premixing tube, connected to the housing, and seals the air chamber. The housing is provided with at least one air inlet communicating with the air chamber. The fuel premixing tube is provided with a first hole array and a second hole array, the first hole array being located in the air chamber and the second hole array being located in the fuel chamber. An air supply unit is connected to one end of the housing and is capable of sealing the fuel chamber. The air supply unit is provided with at least one fuel inlet that communicates with the fuel chamber. A combustion chamber assembly, which is connected to the premixing assembly and together with at least a portion of the premixing assembly forms a combustion chamber with one end open, wherein the opening of the fuel premixing pipe communicates with the combustion chamber, and at least a portion of the combustion chamber assembly is made of a transparent material; The partition plate is provided with a sealing part. Both the first pore array and the second pore array include multiple layers of through holes evenly distributed on the side wall of the fuel premixing tube. The through holes located in the same layer are evenly distributed around the circumference of the fuel premixing tube at 90-degree intervals. Each individual fuel premixing tube in the second pore array is provided with 16 symmetrically distributed jet micropores.

2. The array-type micro-premixed burner according to claim 1, characterized in that, The premixed array includes nine fuel premixed tubes, which form a 3*3 premixed array.

3. The array-type micro-premixed burner according to claim 2, characterized in that, The nine fuel premixing pipes are arranged in a square with uniform distribution.

4. The array-type micro-premixed burner according to claim 1, characterized in that, The volume of the air chamber is larger than the volume of the fuel chamber.

5. The array-type micro-premixed burner according to claim 1, characterized in that, Both the first aperture array and the second aperture array include multiple through holes uniformly distributed on the sidewall of the fuel premixing pipe.

6. The array-type micro-premixed burner according to claim 1, characterized in that, The combustion chamber assembly includes: The bracket is provided in multiple ways, and each bracket is provided with two snap-fit ​​slots; The sidewalls are multiple in number, and the two ends of each sidewall are respectively engaged in the engaging grooves, and are connected end to end in sequence. A second mounting plate is connected to the first mounting plate. The second mounting plate is provided with an opening for the premixed fuel in the fuel premixing pipe to pass through. The side of the second mounting plate away from the first mounting plate is provided with a square-shaped mounting groove. The mounting groove is configured to accommodate and fix the end of the bracket and the side wall.

7. The array-type micro-premixed burner according to claim 6, characterized in that, The sidewall is made of high-transparency quartz glass.

8. The array-type micro-premixed burner according to claim 1, characterized in that, The first chamber has a circular cross-section, and the fuel premixing pipe has a circular cross-section.

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