Pre-mixing type combustor structure with low nitrogen emission

Abstract

The utility model belongs to the technical field of combustors, and particularly relates to a low-nitrogen-emission premixing type combustor structure which comprises a shell, an air inlet mechanism, an air adjusting mechanism, a combustion mechanism, a fire stabilizing mechanism, a premixing mechanism and a control cabinet. The air adjusting mechanism comprises an air adjusting driving assembly and an air adjusting assembly. The combustion mechanism comprises an ignition assembly and a combustion assembly. The premixing mechanism comprises a combustion chamber, a smoke mixing disc and a mixing disc fixing pipe. According to the pre-mixing type combustor structure with low nitrogen emission, through the design of the pre-mixing mechanism, fuel gas, air and part of smoke can be fully mixed before combustion, and combustion sufficiency is guaranteed; a combustion chamber, a flue gas mixing disc and a mixing disc fixing pipe in the premixing mechanism are matched with one another, so that flue gas can participate in mixing, the combustion temperature is effectively reduced, and generation of thermal nitrogen oxides is inhibited and reduced; the premixing mechanism is arranged at the combustion mechanism, a mixer does not need to be specially arranged for the combustor, and the size is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of burner technology, and in particular relates to a premixed burner structure with low nitrogen emissions. Background Technology

[0002] Burners, as devices that inject fuel and air in a specific manner for mixing (or mixed injection) and combustion, are widely used in various fields such as industry and civil applications. Currently, some premixed combustion methods have several shortcomings. For example, the fuel gas is only partially mixed with air before combustion, requiring secondary air replenishment during combustion, which leads to incomplete combustion.

[0003] In some existing cylindrical fully premixed burners, the fuel gas and air are fully mixed before entering the cylinder. This necessitates that heating systems using this burner require a dedicated mixer, resulting in an increase in burner volume and the geometric volume occupied by the fuel gas and air mixture. Utility Model Content

[0004] The purpose of this invention is to provide a premixed burner structure with low nitrogen emissions, aiming to solve the technical problems of incomplete combustion and increased burner volume in the prior art.

[0005] To achieve the above objectives, the present invention provides a low-NOx emission premixed burner structure, comprising a shell, an air inlet mechanism, an air regulating mechanism, a combustion mechanism, a flame stabilization mechanism, a premixing mechanism, and a control cabinet. The air inlet mechanism is connected to the shell, the air regulating mechanism is connected to the shell and disposed above the air inlet mechanism, the combustion mechanism is disposed within the flame stabilization mechanism and connected to the shell, and the premixing mechanism is connected to the combustion mechanism; both the air regulating mechanism and the combustion mechanism are electrically connected to the control cabinet.

[0006] The air regulating mechanism includes an air regulating drive component and an air regulating component. The air regulating drive component is connected to the housing and the air regulating component respectively, and drives the air regulating component to rotate. The air regulating component is rotatably connected to the housing.

[0007] The combustion mechanism includes an ignition component and a combustion component. The ignition component is connected to the premixing mechanism, and the combustion component is connected to the flame stabilization mechanism and the premixing mechanism, respectively.

[0008] The premixing mechanism is disposed within the flame stabilizing mechanism and is connected to the combustion assembly.

[0009] As an optional embodiment of this utility model, the premixing mechanism includes a combustion chamber, a flue gas mixing disc, and a mixing disc fixing pipe. The combustion chamber is cylindrical and fixedly connected to the flue gas mixing disc. The flue gas mixing disc is fixedly connected to the mixing disc fixing pipe, and the mixing disc fixing pipe is fixedly connected to the combustion assembly. The flue gas mixing disc is provided with multiple smoke inlet holes. The mixing disc fixing pipe is provided with a smoke inlet channel in the middle, and the smoke inlet channel is connected to the combustion assembly.

[0010] As an optional solution of this utility model, the air inlet mechanism includes an air inlet plate and air plate bolts. The air plate bolts are fixedly inserted through the air inlet plate and fixedly connected to the housing. An air inlet filter is fixedly connected to the air inlet plate.

[0011] As an optional solution of this utility model, the air-regulating drive assembly includes an air-regulating drive motor and an air-regulating motor frame. The air-regulating drive motor is fixedly connected to the air-regulating motor frame, and the air-regulating motor frame is fixedly connected to the housing and electrically connected to the control cabinet.

[0012] As an optional embodiment of this utility model, the air regulating assembly includes an air regulating drive shaft, an active air plate, an air regulating rotating frame, an air regulating driven shaft, and a driven air plate. One end of the air regulating drive shaft is fixedly connected to the air regulating drive motor, and the other end is rotatably connected to the housing and fixedly connected to the air regulating rotating frame. The active air plate is fixedly connected to the outside of the air regulating drive shaft. The air regulating rotating frame is fixedly connected to the air regulating drive shaft and the air regulating driven shaft respectively. The air regulating driven shaft is rotatably connected to the housing, and the driven air plate is fixedly connected to the outside of the air regulating driven shaft.

[0013] As an optional embodiment of this utility model, the ignition assembly includes a first igniter and a second igniter, which are arranged in parallel and at intervals and are both fixedly connected to the flue gas mixing plate; both the first igniter and the second igniter are electrically connected to the control cabinet.

[0014] As an optional embodiment of this utility model, the combustion assembly includes a gas diversion fixing pipe, a gas diversion pipe, and a combustion pipe. The combustion pipe is fixedly connected to the flame stabilization mechanism. Multiple gas diversion pipes are provided and are uniformly fixedly connected to the outside of the gas diversion fixing pipe in a ring shape. The number of combustion pipes corresponds to the number of gas diversion pipes and is fixedly connected to the gas diversion pipe.

[0015] As an optional solution of this utility model, the flame stabilizing mechanism includes a flame stabilizing fixing plate, an outer flame stabilizing cover, and an inner flame stabilizing cover. The flame stabilizing fixing plate is fixedly connected to the housing, the outer flame stabilizing cover is fixedly connected to the flame stabilizing fixing plate, and the inner flame stabilizing cover is fixedly connected inside the outer flame stabilizing cover. The gas diversion fixing pipe is fixedly connected to the inner side of the inner flame stabilizing cover.

[0016] The premixed burner structure with low nitrogen emissions provided in this embodiment of the present invention has at least one of the following technical effects:

[0017] The premixed burner structure for low-NOx emissions provided in this application, through the design of the premixing mechanism, enables the fuel gas, air, and a portion of the flue gas to be fully mixed before combustion, ensuring complete combustion. The combustion chamber, flue gas mixing disc, and mixing disc fixing pipe in the premixing mechanism work together, and the flue gas inlet on the flue gas mixing disc and the flue gas inlet channel in the middle of the mixing disc fixing pipe enable the flue gas to participate in the mixing, effectively reducing the combustion temperature and suppressing the generation of thermal NOxes, thereby achieving low NOx emissions. By setting the premixing mechanism at the combustion mechanism, there is no need to configure a mixer specifically for the burner, reducing the volume. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A perspective view of the structure of a premixed burner with low nitrogen emissions provided in an embodiment of this utility model.

[0020] Figure 2 The view of the low-NOx premixed burner structure provided in this embodiment of the utility model, omitting the control cabinet.

[0021] Figure 3 A perspective view of the air adjustment mechanism of the premixed burner structure with low nitrogen emissions provided in an embodiment of this utility model.

[0022] Figure 4 A perspective view of the combustion mechanism, flame stabilization mechanism, and premixing mechanism of the premixed burner structure with low nitrogen emissions provided in this embodiment of the utility model.

[0023] Figure 5 A perspective view of the combustion mechanism and premixing mechanism of the premixed burner structure with low nitrogen emission provided in the embodiment of this utility model.

[0024] Figure 6 A perspective view of the combustion mechanism and premixing mechanism of the premixed burner structure with low nitrogen emission provided in the embodiment of this utility model.

[0025] Figure 7A perspective view of the combustion mechanism and premixing mechanism of the premixed burner structure with low nitrogen emission provided in the embodiment of this utility model.

[0026] The following are the labeling elements in the figure:

[0027] 1. Housing; 2. Air intake mechanism; 3. Air regulating mechanism; 4. Combustion mechanism; 5. Flame stabilization mechanism; 6. Premixing mechanism; 7. Control cabinet;

[0028] 21. Air inlet panel; 22. Air inlet panel bolts; 23. Air inlet filter;

[0029] 31. Airflow control drive assembly; 32. Airflow control assembly;

[0030] 41. Ignition assembly; 42. Combustion assembly;

[0031] 51. Flame stabilizing plate; 52. Outer flame stabilizing cover; 53. Inner flame stabilizing cover;

[0032] 61. Combustion chamber; 62. Flue gas mixing disc; 63. Mixing disc fixing pipe;

[0033] 311. Variable air drive motor; 312. Variable air motor frame;

[0034] 321. Air regulating drive shaft; 322. Driven air vane; 323. Air regulating rotating frame; 324. Air regulating driven shaft; 325. Driven air vane;

[0035] 411. First igniter; 412. Second igniter;

[0036] 421. Gas diversion fixed pipe; 422. Gas diversion pipe; 423. Combustion pipe;

[0037] 621. Smoke inlet;

[0038] 631. Smoke inlet passage. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0040] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0043] In one embodiment of this utility model, such as Figures 1-7 As shown, a premixed burner structure for low-NOx emissions is provided, including a housing 1, an air inlet mechanism 2, an air regulating mechanism 3, a combustion mechanism 4, a flame stabilization mechanism 5, a premixing mechanism 6, and a control cabinet 7. The air inlet mechanism 2 is connected to the housing 1, the air regulating mechanism 3 is connected to the housing 1 and positioned above the air inlet mechanism 2, the combustion mechanism 4 is located within the flame stabilization mechanism 5 and is connected to the housing 1, and the premixing mechanism 6 is connected to the combustion mechanism 4. Both the air regulating mechanism 3 and the combustion mechanism 4 are electrically connected to the control cabinet 7.

[0044] The air regulating mechanism 3 includes an air regulating drive component 31 and an air regulating component 32. The air regulating drive component 31 is connected to the housing 1 and the air regulating component 32 respectively, and drives the air regulating component 32 to rotate. The air regulating component 32 is rotatably connected to the housing 1.

[0045] The combustion mechanism 4 includes an ignition assembly 41 and a combustion assembly 42. The ignition assembly 41 is connected to the premixing mechanism 6, and the combustion assembly 42 is connected to the flame stabilization mechanism 5 and the premixing mechanism 6, respectively.

[0046] The premixing mechanism 6 is located inside the flame stabilizing mechanism 5 and is connected to the combustion assembly 42.

[0047] The premixed burner structure for low-NOx emissions provided in this application, through the design of the premixing mechanism 6, ensures that the fuel gas, air, and part of the flue gas can be fully mixed before combustion, guaranteeing complete combustion. The combustion chamber 61, flue gas mixing disc 62, and mixing disc fixing pipe 63 in the premixing mechanism 6 cooperate with each other. The flue gas inlet 621 on the flue gas mixing disc 62 and the flue gas inlet channel 631 in the middle of the mixing disc fixing pipe 63 enable the flue gas to participate in the mixing, effectively reducing the combustion temperature and inhibiting the generation of thermal nitrogen oxides, thereby achieving low-NOx emissions. By setting the premixing mechanism 6 at the combustion mechanism 4, there is no need to configure a mixer specifically for the burner, reducing the volume.

[0048] In another embodiment of this utility model, the premixing mechanism 6 includes a combustion chamber 61, a flue gas mixing disc 62, and a mixing disc fixing pipe 63. The combustion chamber 61 is cylindrical and fixedly connected to the flue gas mixing disc 62. The flue gas mixing disc 62 is fixedly connected to the mixing disc fixing pipe 63, and the mixing disc fixing pipe 63 is fixedly connected to the combustion assembly 42. The flue gas mixing disc 62 is provided with multiple smoke inlet holes 621. The mixing disc fixing pipe 63 is provided with a smoke inlet channel 631 in the middle, which is connected to the combustion assembly 42. When the premixing mechanism 6 is working, part of the flue gas generated by combustion enters the disc through the multiple smoke inlet holes 621 on the flue gas mixing disc 62. Then, the flue gas enters the combustion assembly 42, which is connected to the smoke inlet channel 631 in the middle of the mixing disc fixing pipe 63. At the same time, fuel gas and air also enter the combustion assembly 42. In the combustion assembly 42, the flue gas is fully mixed with fuel gas and air to form a premixed gas. These premixed gases provide the conditions for subsequent combustion in the combustion tube 423. The mixing of flue gas reduces the temperature of the mixed gas and inhibits the formation of thermal nitrogen oxides during combustion, which helps to achieve low nitrogen emissions.

[0049] In another embodiment of this utility model, the air intake mechanism 2 includes an air intake plate 21 and an air intake bolt 22. The air intake bolt 22 is fixedly inserted through the air intake plate 21 and fixedly connected to the housing 1. An air intake filter 23 is fixedly connected to the air intake plate 21. Air enters the housing 1 through the air intake filter 23.

[0050] In another embodiment of this utility model, the air-regulating drive assembly 31 includes an air-regulating drive motor 311 and an air-regulating motor frame 312. The air-regulating drive motor 311 is fixedly connected to the air-regulating motor frame 312, and the air-regulating motor frame 312 is fixedly connected to the housing 1 and electrically connected to the control cabinet 7. Further, the air-regulating assembly 32 includes an air-regulating drive shaft 321, an active air vane 322, an air-regulating rotating frame 323, an air-regulating driven shaft 324, and a driven air vane 325. One end of the air-regulating drive shaft 321 is fixedly connected to the air-regulating drive motor 311, and the other end is rotatably connected to the housing 1 and fixedly connected to the air-regulating rotating frame 323. The active air vane 322 is fixedly connected to the outside of the air-regulating drive shaft 321. The air-regulating rotating frame 323 is fixedly connected to the air-regulating drive shaft 321 and the air-regulating driven shaft 324 respectively. The air-regulating driven shaft 324 is rotatably connected to the housing 1, and the driven air vane 325 is fixedly connected to the outside of the air-regulating driven shaft 324.

[0051] Control cabinet 7 issues a command, energizing the air-regulating drive motor 311. Since the air-regulating drive motor 311 is fixedly connected to the air-regulating motor frame 312, which in turn is fixed to the housing 1, it provides stable support for the motor's operation. The power of the air-regulating drive motor 311 is transmitted to the air-regulating drive shaft 321 through a fixed connection, causing it to rotate. When the air-regulating drive shaft 321 rotates, the outer fixedly connected active air vane 322 rotates accordingly, changing its angle with the airflow direction. Simultaneously, the air-regulating rotating frame 323, fixedly connected to the air-regulating drive shaft 321, drives the air-regulating driven shaft 324 to rotate, causing the driven air vane 325 fixed to the outside of the air-regulating driven shaft 324 to rotate synchronously, further adjusting the airflow area of ​​the air intake channel. After the angles of the active air deflector 322 and the driven air deflector 325 are changed, the obstruction encountered by the air entering through the air intake mechanism 2 changes, thereby achieving precise adjustment of the air intake volume to meet the combustion requirements of the burner under different operating conditions and ensure the stability and efficiency of combustion.

[0052] In another embodiment of this utility model, the ignition assembly 41 includes a first igniter 411 and a second igniter 412. The first igniter 411 and the second igniter 412 are arranged in parallel and spaced apart, and are both fixedly connected to the flue gas mixing plate 62. Both the first igniter 411 and the second igniter 412 are electrically connected to the control cabinet 7. After receiving the ignition command from the control cabinet 7, the internal circuit system of the first igniter 411 and the second igniter 412 starts to work, generating a high-voltage electric spark. Since the two igniters are fixed in parallel and spaced apart on the flue gas mixing plate 62, the high-voltage electric spark can be generated in the mixed gas area of ​​gas, air, and flue gas in the premixing mechanism 6. When the mixed gas encounters the electric spark, it is quickly ignited to form an initial flame. The parallel and spaced design of the dual igniters ensures smooth ignition. If one igniter fails and cannot generate an electric spark normally, the other igniter can still work normally, ensuring that the burner can still be successfully ignited and started, improving the reliability of ignition and avoiding the situation where the burner cannot work normally due to the failure of a single igniter.

[0053] In another embodiment of the present invention, the combustion assembly 42 includes a gas diversion fixing pipe 421, a gas diversion pipe 422, and a combustion pipe 423. The combustion pipe 423 is fixedly connected to the flame stabilizing mechanism 5. Multiple gas diversion pipes 422 are provided and are uniformly fixedly connected to the outside of the gas diversion fixing pipe 421 in a ring shape. The number of combustion pipes 423 corresponds to the number of gas diversion pipes 422 and is fixedly connected to the gas diversion pipes 422.

[0054] The gas is delivered to the combustion assembly 42 via the housing 1, first entering the gas distribution pipe 421 fixed within the flame stabilization mechanism 5. Since the gas distribution pipes 422 are uniformly fixed in a ring shape on the outside of the gas distribution pipe 421, the gas, under pressure, is evenly distributed from the gas distribution pipe 421 into each gas distribution pipe 422, ensuring a relatively balanced distribution of gas along different paths and providing a foundation for subsequent stable combustion. Each gas distribution pipe 422 is connected to a corresponding combustion pipe 423, and the distributed gas enters its respective combustion pipe 423. The combustion pipe 423 serves as the combustion site, and its structural design ensures stable gas flow within it while creating conditions for mixing the gas with the premixed gas. Under the action of the electric spark generated by the ignition assembly 41, the gas in the combustion pipe 423, along with the gas, air, and flue gas delivered by the premixing mechanism 6, is ignited. The mixture burns completely, producing a high-temperature flame. Since the gas has been evenly distributed before entering the combustion tube 423, and the combustion tube 423 cooperates with the flame stabilization mechanism 5, it can ensure stable flame combustion, thereby achieving efficient operation of the combustion assembly 42 and meeting the burner's usage requirements.

[0055] In another embodiment of this utility model, the flame stabilizing mechanism 5 includes a flame stabilizing fixing plate 51, an outer flame stabilizing cover 52 and an inner flame stabilizing cover 53. The flame stabilizing fixing plate 51 is fixedly connected to the housing 1, the outer flame stabilizing cover 52 is fixedly connected to the flame stabilizing fixing plate 51, and the inner flame stabilizing cover 53 is fixedly connected inside the outer flame stabilizing cover 52. The gas diversion fixing pipe 421 is fixedly connected to the inner side of the inner flame stabilizing cover 53.

[0056] The flame stabilizing plate 51 is securely fixed to the burner housing 1 using bolts and other connectors, providing a stable mounting base for the entire flame stabilizing mechanism 5. The outer flame stabilizing cover 52 is installed on the flame stabilizing plate 51, forming the first layer of protection, providing initial protection and support for the inner flame stabilizing cover 53 and the internal combustion assembly 42. The inner flame stabilizing cover 53 is fixed inside the outer flame stabilizing cover 52, further reducing the space occupied by the flame, while providing a precise installation position for the gas diversion fixing pipe 421. The gas diversion fixing pipe 421 is fixed inside the inner flame stabilizing cover 53, ensuring the relative position stability of the gas diversion pipe 422 and the combustion pipe 423, allowing for uniform gas distribution and stable combustion. When the gas in the combustion assembly 42 is ignited, a flame is generated within the combustion pipe 423. At this time, the enclosed space formed by the inner flame stabilizing cover 53, the outer flame stabilizing cover 52, and the flame stabilizing plate 51 effectively blocks external airflow interference to the flame. The presence of the inner flame stabilizer 53 restricts the direction of flame diffusion, allowing the flame to burn in a relatively stable space; the outer flame stabilizer 52 enhances the stability and anti-interference capability of the entire flame stabilization mechanism 5, further ensuring that the flame will not be deflected or extinguished due to the influence of external airflow, thereby improving the stability and efficiency of combustion and ensuring the stable operation of the burner.

[0057] The premixed burner structure for low-NOx emissions provided in this application, through the design of the premixing mechanism 6, ensures that the fuel gas, air, and part of the flue gas can be fully mixed before combustion, guaranteeing complete combustion. The combustion chamber 61, flue gas mixing disc 62, and mixing disc fixing pipe 63 in the premixing mechanism 6 cooperate with each other. The flue gas inlet 621 on the flue gas mixing disc 62 and the flue gas inlet channel 631 in the middle of the mixing disc fixing pipe 63 enable the flue gas to participate in the mixing, effectively reducing the combustion temperature and inhibiting the generation of thermal nitrogen oxides, thereby achieving low-NOx emissions. By setting the premixing mechanism 6 at the combustion mechanism 4, there is no need to configure a mixer specifically for the burner, reducing the volume.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A premixed burner structure with low nitrogen emissions, characterized in that, The device includes a housing, an air inlet mechanism, an air regulating mechanism, a combustion mechanism, a flame stabilization mechanism, a premixing mechanism, and a control cabinet. The air inlet mechanism is connected to the housing, the air regulating mechanism is connected to the housing and positioned above the air inlet mechanism, the combustion mechanism is located inside the flame stabilization mechanism and connected to the housing, and the premixing mechanism is connected to the combustion mechanism. Both the air regulating mechanism and the combustion mechanism are electrically connected to the control cabinet. The air regulating mechanism includes an air regulating drive component and an air regulating component. The air regulating drive component is connected to the housing and the air regulating component respectively, and drives the air regulating component to rotate. The air regulating component is rotatably connected to the housing. The combustion mechanism includes an ignition component and a combustion component. The ignition component is connected to the premixing mechanism, and the combustion component is connected to the flame stabilization mechanism and the premixing mechanism, respectively. The premixing mechanism is disposed within the flame stabilizing mechanism and is connected to the combustion assembly.

2. The premixed burner structure with low nitrogen emissions according to claim 1, characterized in that, The premixing mechanism includes a combustion chamber, a flue gas mixing disc, and a mixing disc fixing pipe. The combustion chamber is cylindrical and fixedly connected to the flue gas mixing disc. The flue gas mixing disc is fixedly connected to the mixing disc fixing pipe, and the mixing disc fixing pipe is fixedly connected to the combustion assembly. The flue gas mixing disc has multiple smoke inlet holes. The mixing disc fixing pipe has a smoke inlet channel in the middle, and the smoke inlet channel is connected to the combustion assembly.

3. The premixed burner structure with low nitrogen emissions according to claim 1, characterized in that, The air intake mechanism includes an air intake plate and air intake plate bolts. The air intake plate bolts are fixedly inserted through the air intake plate and fixedly connected to the housing. An air intake filter screen is fixedly connected to the air intake plate.

4. The premixed burner structure with low nitrogen emissions according to claim 1, characterized in that, The air-regulating drive assembly includes an air-regulating drive motor and an air-regulating motor frame. The air-regulating drive motor is fixedly connected to the air-regulating motor frame, and the air-regulating motor frame is fixedly connected to the housing and electrically connected to the control cabinet.

5. The premixed burner structure with low nitrogen emissions according to claim 4, characterized in that, The air conditioning assembly includes an air conditioning drive shaft, an active air plate, an air conditioning rotating frame, an air conditioning driven shaft, and a driven air plate. One end of the air conditioning drive shaft is fixedly connected to the air conditioning drive motor, and the other end is rotatably connected to the housing and fixedly connected to the air conditioning rotating frame. The active air plate is fixedly connected to the outside of the air conditioning drive shaft. The air conditioning rotating frame is fixedly connected to the air conditioning drive shaft and the air conditioning driven shaft respectively. The air conditioning driven shaft is rotatably connected to the housing, and the driven air plate is fixedly connected to the outside of the air conditioning driven shaft.

6. The premixed burner structure with low nitrogen emissions according to claim 2, characterized in that, The ignition assembly includes a first igniter and a second igniter, which are arranged in parallel and spaced apart, and are both fixedly connected to the flue gas mixing plate; both the first igniter and the second igniter are electrically connected to the control cabinet.

7. The premixed burner structure with low nitrogen emissions according to claim 1, characterized in that, The combustion assembly includes a gas splitting fixed pipe, a gas splitting pipe, and a combustion pipe. The combustion pipe is fixedly connected to the flame stabilization mechanism. Multiple gas splitting pipes are provided and are uniformly and annularly fixedly connected to the outside of the gas splitting fixed pipe. The number of combustion pipes corresponds to the number of gas splitting pipes and is fixedly connected to the gas splitting pipe.

8. The premixed burner structure with low nitrogen emissions according to claim 7, characterized in that, The flame stabilizing mechanism includes a flame stabilizing fixing plate, an outer flame stabilizing cover, and an inner flame stabilizing cover. The flame stabilizing fixing plate is fixedly connected to the housing, the outer flame stabilizing cover is fixedly connected to the flame stabilizing fixing plate, and the inner flame stabilizing cover is fixedly connected inside the outer flame stabilizing cover. The gas diversion fixing pipe is fixedly connected to the inner side of the inner flame stabilizing cover.

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