Air inlet adjusting device and combustor

Abstract

The utility model relates to an air inlet adjusting device and a burner, and belongs to the technical field of burner equipment.The air inlet adjusting device comprises a box body assembly, a first air inlet, a second air inlet and a second air outlet, the cover body assembly is arranged on the box body assembly, a first air passing channel is formed between the cover body assembly and the box body assembly, the air inlet, the first air passing channel and the first air outlet are sequentially communicated, and the cover body assembly is provided with an air passing hole, a second air passing channel and a second air outlet; the first air passing channel, the air passing hole, the second air passing channel, the second air outlet and the first air outlet are sequentially communicated; and the adjusting assembly is arranged on the cover body assembly, and the air passing area of the air passing hole is increased or decreased along with movement of the adjusting assembly relative to the cover body assembly. According to the air inlet adjusting device, when the adjusting assembly moves relative to the cover body assembly, the air inlet area of the air passing hole can be changed to change the airflow flow, and the airflow flow can be adjusted according to different working conditions of the combustor.

Description

Technical Field

[0001] The utility model relates to the technical field of burner equipment, in particular to an air inlet regulating device and a burner. Background Art

[0002] Insufficient airflow such as combustion-supporting air delivered to the burner by the air inlet device will lead to incomplete combustion of the compounds in the burner and increase the production of flue gas containing nitrogen and ammonia, increasing the burden on environmental protection; however, excessive airflow such as combustion-supporting air delivered to the burner will easily cause the flame of the burner to extinguish due to excessive wind pressure, so the air volume adjustment of the air inlet device is very important. However, the existing air inlet device does not have the function of adjusting the air volume delivered to the burner, which brings inconvenience to users. Utility Model Content

[0003] Based on this, it is necessary to provide an air inlet regulating device and a burner to address the problem that the existing air inlet device does not have the function of regulating the air volume.

[0004] 1. An air inlet regulating device, comprising: a box assembly, wherein the box assembly is provided with an air inlet and a first air outlet; a cover assembly, wherein the cover assembly is arranged on the box assembly, the cover assembly extends toward the first air outlet, a first air passage is formed between the cover assembly and the box assembly, the air inlet, the first air passage and the first air outlet are connected in sequence, the cover assembly is provided with an air hole, a second air passage and a second air outlet, the first air passage, the air hole, the second air passage, the second air outlet and the first air outlet are connected in sequence; an regulating assembly, wherein the regulating assembly is arranged on the cover assembly, the regulating assembly can move relative to the cover assembly, and the air passage area of ​​the air hole increases or decreases as the regulating assembly moves relative to the cover assembly.

[0005] The first aspect of the present application discloses an air inlet regulating device. Through the arrangement of the first air passage and the second air passage, the airflow entering from the air inlet can be split into two streams, which are guided through the first air passage and the second air passage respectively and then delivered to the burner from the first air outlet. The airflow is delivered smoothly and evenly, effectively reducing the turbulence phenomenon. When the regulating component moves relative to the cover component, the air inlet area of ​​the air hole can be changed, so that the airflow flow delivered from the first air passage to the second air passage changes accordingly. The airflow flow can be adjusted according to different working conditions of the burner, and the airflow flow delivered to the burner can be more flexibly controlled, which optimizes the situation where insufficient airflow such as combustion-supporting air causes incomplete combustion or excessive airflow causes flame extinguishing. The air inlet regulating device provides stable, efficient and controllable guarantees for the air inlet of the burner, and is highly practical. In addition, the overall structure is simple, the assembly is relatively convenient, and the production cost is low.

[0006] In one embodiment, when the adjusting component moves relative to the cover body component in a direction close to the first air outlet, the air passing area of ​​the air hole increases, and when the adjusting component moves relative to the cover body component in a direction away from the first air outlet, the air passing area of ​​the air hole decreases. By moving the adjusting component relative to the cover body component in a direction close to or away from the first air outlet, the degree of sealing of the air hole by the adjusting component can be changed, resulting in a change in the air passing area of ​​the air hole, so that the staff can control the movement of the adjusting component according to different working conditions of the burner to adjust the air flow rate delivered to the burner. The air intake adjustment method is relatively simple, which reduces the operation intensity and saves operation time, effectively improves the control efficiency, and ensures that the flame of the burner can burn stably.

[0007] In one embodiment, the air hole and / or the second air outlet are located in the box assembly. Since the second air outlet is located in the box assembly, the airflow output from the second air outlet is mixed with the airflow transported from the first air passage toward the first air outlet, so that the gas transport is more uniform.

[0008] In one embodiment, the extension direction of the first air passage toward the first air outlet is the same as the extension direction of the second air passage toward the second air outlet. Since the extension direction of the first air passage toward the first air outlet is the same as the extension direction of the second air passage toward the second air outlet, the two air flows guided through the first air passage and the second air passage can be output from the same end of the box assembly, and the structure is more compact, the layout is more reasonable and compact, and the space utilization rate is high while ensuring normal air flow.

[0009] In one embodiment, the number of the air holes is multiple, and the multiple air holes are arranged in sequence along the circumference of the adjustment component. The multiple air holes are arranged so that the airflow from the first air passage is more efficiently transported to the second air passage. The multiple air holes are arranged in sequence along the circumference of the adjustment component, and when the adjustment component moves relative to the cover component, the airflow area of ​​the multiple air holes can be changed at the same time, and the airflow flow rate can be adjusted more efficiently by operating the movement of the adjustment component.

[0010] In one embodiment, the adjustment assembly includes a movable plate and a movable rod, the movable plate is sleeved on the cover assembly and is located in the first air passage, the movable rod is connected to the movable plate, a portion of the movable rod passes through the cover assembly and extends to the outside of the box assembly, and the movable rod can drive the movable plate to move relative to the cover assembly. By sleeved the movable plate on the cover assembly, the movable plate moves along the length direction of the cover assembly, which reduces the degree of freedom of the movable plate, and the movement of the movable plate is more accurate, so that the movable plate can accurately change the degree of closure of the air hole. By partially extending the movable rod through the cover assembly to the outside of the box assembly, the staff adjusts the airflow by controlling the movement of the portion of the movable rod located outside the box assembly, and the air intake adjustment method is simpler, safer and more reliable.

[0011] In one embodiment, the movable rod comprises a movable rod body, an adjustment seat and a hand grip, wherein the adjustment seat is arranged on the cover assembly, one end of the movable rod body is connected to the movable plate, and the other end of the movable rod body passes through the cover assembly and the adjustment seat in sequence and is connected to the hand grip. By passing the movable rod body through the adjustment seat, the radial force of the cover assembly on the movable rod body is reduced, and the service life of the movable rod body can be effectively improved. The hand grip is arranged to provide the staff with a suitable position for holding the movable rod, so that the staff can save more effort when using it.

[0012] In one embodiment, there are multiple moving rods, all of which are connected to the movable plate, and all of which can drive the movable plate to move relative to the cover assembly. Since multiple moving rods are connected to the movable plate, the movable plate can move more smoothly and stably, with high reliability, effectively improving work efficiency.

[0013] In one embodiment, the cover assembly includes a cover plate and an air guide column, the cover plate is arranged on the box assembly, the air guide column is arranged on the cover plate and is located on the side of the cover plate facing the first air passage, the air guide column extends toward the first air outlet, the air guide column is provided with the air hole, the second air passage and the second air outlet, and the second air outlet and the first air outlet are arranged oppositely. The air guide column extends toward the first air outlet, the structure distribution is reasonable and compact, and the space occupied is small. The air guide column is arranged toward the first air outlet through the second air outlet and the first air outlet, so that the airflow of the second air outlet can be quickly transported to the first air outlet, and the airflow transportation efficiency is high.

[0014] In one embodiment, the box assembly includes a first shell, a second shell and a third shell, the first shell and the third shell are arranged on the second shell and are respectively located on both sides of the second shell, the first shell is provided with the air inlet, the first shell, the second shell, the third shell and the cover assembly are enclosed to form the first air passage, and the third shell is provided with the first air outlet. With the first shell and the third shell respectively located on both sides of the second shell, the box assembly structure has better integrity, ensuring the smoothness and stability of airflow delivery. In addition, the box assembly has good overall coordination, high appearance quality, and good user experience. This design makes the structure of the box assembly relatively simple and easy to assemble.

[0015] In one embodiment, a reinforcing connector is also included, and the reinforcing connector includes a first gasket, a second gasket and a third gasket, wherein the first gasket is sandwiched between the cover assembly and the first shell, the second gasket is sandwiched between the first shell and the second shell, and the third gasket is sandwiched between the second shell and the third shell. The arrangement of the first gasket, the second gasket and the third gasket can reduce the contact wear at the assembly points of the cover assembly, the first shell, the second shell and the third shell, respectively, improve the wear resistance and increase the service life of the product. Moreover, the connection strength can be enhanced to prevent the airflow from leaking from the gaps at the assembly points of the cover assembly, the first shell, the second shell and the third shell, thereby reducing wind loss.

[0016] In one embodiment, a support block is further included, and the support block is provided on the box assembly, and a plurality of mounting holes for assembly are provided on the support block. By providing a plurality of mounting holes for assembly on the support block, for example, the mounting holes are used to connect the box assembly with an external wind source assembly, the assembly of the box assembly is simple, convenient and has good firmness. Moreover, the bottom of the support block is a plane so that the box assembly can be stably placed on the ground.

[0017] A burner comprises: a burner body; and the above-mentioned air inlet regulating device, wherein the air inlet regulating device is arranged on the burner body.

[0018] The second aspect of the present application discloses a burner, which is arranged on the burner body through an air inlet regulating device. The staff can flexibly control the air flow rate delivered to the burner body through the air inlet regulating device, thereby optimizing the situation where insufficient airflow such as combustion-supporting air causes incomplete combustion or excessive airflow causes flame extinction, and the user experience is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional diagram of the air inlet adjustment device;

[0020] Figure 2is a cross-sectional view of the air inlet adjustment device;

[0021] Figure 3 is a first exploded view of the air inlet adjustment device;

[0022] Figure 4 is a second exploded view of the air inlet adjustment device;

[0023] Figure 5 A perspective view of the adjustment assembly;

[0024] Figure 6 is a three-dimensional diagram of the box assembly;

[0025] Figure 7 This is an exploded view of the box assembly;

[0026] Figure 8 A three-dimensional diagram of the cover assembly.

[0027] The corresponding relationship between the reference numerals and the component names is as follows:

[0028] 1 box assembly, 11 first shell, 12 second shell, 13 third shell, 101 air inlet, 102 first air outlet, 103 first air passage;

[0029] 2 cover body assembly, 21 cover plate, 22 wind guide column, 201 wind hole, 202 second wind channel, 203 second air outlet;

[0030] 3 adjustment assembly, 31 movable plate, 32 moving rod, 321 moving rod body, 322 adjustment seat, 323 hand grip;

[0031] 41 a first gasket, 42 a second gasket, 43 a third gasket;

[0032] 5 support blocks. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0035] Example 1

[0036] like Figure 1-4As shown, this embodiment discloses an air inlet regulating device, comprising: a box assembly 1, wherein the box assembly 1 is provided with an air inlet 101 and a first air outlet 102; a cover assembly 2, wherein the cover assembly 2 is arranged on the box assembly 1, the cover assembly 2 extends toward the first air outlet 102, a first air passage 103 is formed between the cover assembly 2 and the box assembly 1, the air inlet 101, the first air passage 103 and the first air outlet 102 are connected in sequence, and the cover assembly 2 is provided with There are an air hole 201, a second air channel 202 and a second air outlet 203, the first air channel 103, the air hole 201, the second air channel 202, the second air outlet 203 and the first air outlet 102 are connected in sequence; an adjusting component 3, the adjusting component 3 is arranged on the cover body component 2, the adjusting component 3 can move relative to the cover body component 2, and the air flow area of ​​the air hole 201 increases or decreases as the adjusting component 3 moves relative to the cover body component 2.

[0037] The first aspect of the present application discloses an air inlet regulating device. Through the arrangement of the first air passage 103 and the second air passage 202, the airflow entering from the air inlet 101 can be split into two streams, which are respectively guided through the first air passage 103 and the second air passage 202 and then delivered to the burner from the first air outlet 102. The delivery of the airflow is smooth and uniform, and the turbulence phenomenon is effectively reduced. When the regulating component 3 moves relative to the cover component 2, the air inlet area of ​​the air hole 201 can be changed, so that the airflow flow delivered from the first air passage 103 to the second air passage 202 changes accordingly. The airflow flow can be adjusted according to different working conditions of the burner, and the airflow flow delivered to the burner can be more flexibly controlled, which optimizes the situation where insufficient combustion or flame extinguishing due to insufficient airflow such as combustion-supporting air is caused. The air inlet regulating device provides stable, efficient and controllable guarantee for the air inlet of the burner, and has strong practicality. In addition, the overall structure is simple, the assembly is relatively convenient, and the production cost is low.

[0038] like Figure 2As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: when the adjusting component 3 moves relative to the cover body component 2 in a direction close to the first air outlet 102, the air passing area of ​​the air hole 201 increases, and when the adjusting component 3 moves relative to the cover body component 2 in a direction away from the first air outlet 102, the air passing area of ​​the air hole 201 decreases. By moving the adjusting component 3 relative to the cover body component 2 in a direction close to or away from the first air outlet 102, the degree of closure of the air hole 201 by the adjusting component 3 can be changed, resulting in a change in the air passing area of ​​the air hole 201, so that the staff can control the movement of the adjusting component 3 according to different working conditions of the burner to adjust the air flow rate delivered to the burner. The air intake adjustment method is relatively simple, which reduces the operation intensity and saves the operation time, effectively improves the control efficiency, and ensures that the flame of the burner can burn stably.

[0039] like Figure 2 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the air hole 201 and / or the second air outlet 203 are located in the box assembly 1. Since the second air outlet 203 is located in the box assembly 1, the airflow output from the second air outlet 203 is mixed with the airflow transported from the first air passage 103 toward the first air outlet 102, so that the gas transport is more uniform.

[0040] like Figure 2 As shown, in addition to the features of the above embodiment, this embodiment further defines that: the extension direction of the first air passage 103 toward the first air outlet 102 is the same as the extension direction of the second air passage 202 toward the second air outlet 203. Since the extension direction of the first air passage 103 toward the first air outlet 102 is the same as the extension direction of the second air passage 202 toward the second air outlet 203, the two air flows guided through the first air passage 103 and the second air passage 202 can be output from the same end of the box assembly 1, and the structure is more miniaturized, the layout is more reasonable and compact, and the space utilization rate is high while ensuring normal airflow.

[0041] like Figure 2 and Figure 3 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the number of the air holes 201 is multiple, and the multiple air holes 201 are arranged in sequence along the circumference of the adjustment component 3. The arrangement of the multiple air holes 201 makes it more efficient to transport the airflow from the first air passage 103 to the second air passage 202. The multiple air holes 201 are arranged in sequence along the circumference of the adjustment component 3. When the adjustment component 3 moves relative to the cover body component 2, the air passing areas of the multiple air holes 201 can be changed at the same time, and the movement of the adjustment component 3 to adjust the airflow rate is more efficient.

[0042] like Figure 5 As shown, in addition to the features of the above embodiment, this embodiment further defines that: the adjustment component 3 includes a movable plate 31 and a moving rod 32, the movable plate 31 is sleeved on the cover assembly 2 and is located in the first air passage 103, the moving rod 32 is connected to the movable plate 31, and a portion of the moving rod 32 passes through the cover assembly 2 and extends to the outside of the box assembly 1, and the moving rod 32 can drive the movable plate 31 to move relative to the cover assembly 2. By sleeved on the cover assembly 2, the movable plate 31 moves along the length direction of the cover assembly 2, reducing the degree of freedom of the movable plate 31, and the movement of the movable plate 31 is more accurate, so that the movable plate 31 can accurately change the degree of closure of the air hole 201. By partially extending the moving rod 32 through the cover assembly 2 to the outside of the box assembly 1, the staff adjusts the air flow by controlling the movement of the portion of the moving rod 32 located outside the box assembly 1, and the air intake adjustment method is simpler, safer and more reliable.

[0043] like Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the moving rod 32 includes a moving rod body 321, an adjustment seat 322 and a hand grip 323, the adjustment seat 322 is arranged on the cover assembly 2, one end of the moving rod body 321 is connected to the movable plate 31, and the other end of the moving rod body 321 passes through the cover assembly 2 and the adjustment seat 322 in sequence and is connected to the hand grip 323. By passing the moving rod body 321 through the adjustment seat 322, the radial force of the cover assembly 2 on the moving rod body 321 is reduced, and the service life of the moving rod body 321 can be effectively improved. The hand grip 323 is provided to provide a suitable position for the staff to hold the moving rod 32, so that the staff can save more effort when using it.

[0044] like Figure 5 As shown, in addition to the features of the above embodiment, this embodiment further defines that: the number of the moving rods 32 is multiple, the multiple moving rods 32 are all connected to the movable plate 31, and the multiple moving rods 32 can drive the movable plate 31 to move relative to the cover assembly 2. By connecting the multiple moving rods 32 to the movable plate 31, the movable plate 31 can move more smoothly and stably, with high reliability, and effectively improve the working efficiency.

[0045] like Figure 8As shown, in addition to the features of the above embodiment, this embodiment further defines that: the cover assembly 2 includes a cover plate 21 and an air guide column 22, the cover plate 21 is arranged on the box assembly 1, the air guide column 22 is arranged on the cover plate 21 and is located on the side of the cover plate 21 facing the first air passage 103, the air guide column 22 extends toward the first air outlet 102, the air guide column 22 is provided with the air hole 201, the second air passage 202 and the second air outlet 203, and the second air outlet 203 and the first air outlet 102 are arranged oppositely. The air guide column 22 extends toward the first air outlet 102, the structure distribution is reasonable and compact, and the space occupied is small. The air guide column 22 is arranged toward the first air outlet 102 through the second air outlet 203 and the first air outlet 102, so that the airflow of the second air outlet 203 can be quickly transported to the first air outlet 102, and the airflow transportation efficiency is high.

[0046] like Figure 6 and Figure 7 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the box assembly 1 includes a first shell 11, a second shell 12 and a third shell 13, the first shell 11 and the third shell 13 are arranged on the second shell 12 and are respectively located on both sides of the second shell 12, the first shell 11 is provided with the air inlet 101, the first shell 11, the second shell 12, the third shell 13 and the cover assembly 2 are enclosed to form the first air passage 103, and the third shell 13 is provided with the first air outlet 102. With the first shell 11 and the third shell 13 respectively located on both sides of the second shell 12, the structural integrity of the box assembly 1 is better, ensuring the smoothness and stability of the air flow. Moreover, the overall coordination of the box assembly 1 is good, the appearance quality is high, and the user experience is good. This design makes the structure of the box assembly 1 relatively simple, and the assembly is simple and convenient.

[0047] like Figure 4As shown, in addition to the features of the above embodiment, this embodiment is further defined as follows: it also includes a reinforcing connector, the reinforcing connector includes a first gasket 41, a second gasket 42 and a third gasket 43, the first gasket 41 is sandwiched between the cover assembly 2 and the first shell 11, the second gasket 42 is sandwiched between the first shell 11 and the second shell 12, and the third gasket 43 is sandwiched between the second shell 12 and the third shell 13. The arrangement of the first gasket 41, the second gasket 42 and the third gasket 43 can reduce the contact wear of the assembly of the cover assembly 2, the first shell 11, the second shell 12 and the third shell 13, respectively, improve the wear resistance, and increase the service life of the product. In addition, it can enhance the connection strength, avoid airflow leakage from the gap at the assembly of the cover assembly 2, the first shell 11, the second shell 12 and the third shell 13, thereby reducing wind loss.

[0048] like Figure 1 As shown, in addition to the features of the above embodiment, this embodiment is further defined as follows: it also includes a support block 5, the support block 5 is arranged on the box assembly 1, and the support block 5 is provided with a plurality of mounting holes for assembly. By providing a plurality of mounting holes for assembly on the support block 5, for example, the mounting holes are used to connect the box assembly 1 with an external wind source assembly, the assembly of the box assembly 1 is simple and convenient and has good firmness. Moreover, the bottom of the support block 5 is a plane so that the box assembly 1 can be stably placed on the ground.

[0049] Example 2

[0050] This embodiment discloses a burner, comprising: a burner body; and the above-mentioned air inlet regulating device, wherein the air inlet regulating device is arranged on the burner body.

[0051] The second aspect of the present application discloses a burner, which is arranged on the burner body through an air inlet regulating device. The staff can flexibly control the air flow rate delivered to the burner body through the air inlet regulating device, thereby optimizing the situation where insufficient airflow such as combustion-supporting air causes incomplete combustion or excessive airflow causes flame extinction, and the user experience is good.

[0052] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An air inlet adjustment device, characterized in that: include: A box assembly (1), wherein the box assembly (1) is provided with an air inlet (101) and a first air outlet (102); A cover assembly (2), wherein the cover assembly (2) is arranged on the box assembly (1), the cover assembly (2) extends toward the first air outlet (102), a first air passage (103) is formed between the cover assembly (2) and the box assembly (1), the air inlet (101), the first air passage (103) and the first air outlet (102) are sequentially connected, the cover assembly (2) is provided with an air hole (201), a second air passage (202) and a second air outlet (203), the first air passage (103), the air hole (201), the second air passage (202), the second air outlet (203) and the first air outlet (102) are sequentially connected; An adjusting component (3), wherein the adjusting component (3) is arranged on the cover body component (2), and the adjusting component (3) can move relative to the cover body component (2), and the air flow area of ​​the air hole (201) increases or decreases as the adjusting component (3) moves relative to the cover body component (2).

2. The air inlet adjustment device according to claim 1, characterized in that: When the adjusting component (3) moves relative to the cover component (2) in a direction close to the first air outlet (102), the air passing area of ​​the air hole (201) increases; when the adjusting component (3) moves relative to the cover component (2) in a direction away from the first air outlet (102), the air passing area of ​​the air hole (201) decreases; And / or the air hole (201) and / or the second air outlet (203) are located inside the box assembly (1).

3. The air inlet adjustment device according to claim 1, characterized in that: An extension direction of the first air passage (103) toward the first air outlet (102) is the same as an extension direction of the second air passage (202) toward the second air outlet (203); And / or the number of the air holes (201) is multiple, and the multiple air holes (201) are arranged in sequence and at intervals along the circumference of the adjustment component (3).

4. The air inlet adjustment device according to claim 1, characterized in that: The adjustment component (3) comprises a movable plate (31) and a movable rod (32); the movable plate (31) is sleeved on the cover component (2) and is located in the first air passage (103); the movable rod (32) is connected to the movable plate (31); a portion of the movable rod (32) passes through the cover component (2) and extends to the outside of the box component (1); the movable rod (32) can drive the movable plate (31) to move relative to the cover component (2).

5. The air inlet adjustment device according to claim 4, characterized in that: The movable rod (32) comprises a movable rod body (321), an adjustment seat (322) and a hand grip (323); the adjustment seat (322) is arranged on the cover assembly (2); one end of the movable rod body (321) is connected to the movable plate (31); the other end of the movable rod body (321) passes through the cover assembly (2) and the adjustment seat (322) in sequence and is then connected to the hand grip (323); And / or there are multiple movable rods (32), all of which are connected to the movable plate (31), and all of which can drive the movable plate (31) to move relative to the cover assembly (2).

6. The air inlet adjustment device according to claim 1, characterized in that: The cover body assembly (2) comprises a cover plate (21) and an air guide column (22); the cover plate (21) is arranged on the box body assembly (1); the air guide column (22) is arranged on the cover plate (21) and is located on a side of the cover plate (21) facing the first air passage (103); the air guide column (22) extends toward the first air outlet (102); the air guide column (22) is provided with the air hole (201), the second air passage (202) and the second air outlet (203); the second air outlet (203) and the first air outlet (102) are arranged relative to each other.

7. The air inlet adjustment device according to claim 1, characterized in that: The box assembly (1) comprises a first shell (11), a second shell (12) and a third shell (13); the first shell (11) and the third shell (13) are arranged on the second shell (12) and are respectively located on both sides of the second shell (12); the first shell (11) is provided with the air inlet (101); the first shell (11), the second shell (12), the third shell (13) and the cover assembly (2) are enclosed to form the first air passage (103); the third shell (13) is provided with the first air outlet (102).

8. The air inlet adjustment device according to claim 7, characterized in that: It also includes a reinforcing connector, which includes a first gasket (41), a second gasket (42) and a third gasket (43), wherein the first gasket (41) is clamped between the cover assembly (2) and the first shell (11), the second gasket (42) is clamped between the first shell (11) and the second shell (12), and the third gasket (43) is clamped between the second shell (12) and the third shell (13).

9. The air inlet adjustment device according to claim 1, characterized in that: It also comprises a support block (5), wherein the support block (5) is arranged on the box assembly (1), and the support block (5) is provided with a plurality of mounting holes for assembly.

10. A burner, characterized in that: include: Burner body; The air inlet regulating device according to any one of claims 1 to 9, wherein the air inlet regulating device is arranged on the burner body.

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