Low-nitrogen combustor capable of automatically adjusting air volume

Abstract

The utility model discloses a low-nitrogen combustor capable of automatically adjusting the air volume, and relates to the field of low-nitrogen combustors, the low-nitrogen combustor comprises a combustor body, a base plate, an air inlet pipe, a fixing box, an adjusting assembly and a rectifying assembly, a motor drives a transmission rod to rotate through cooperation of a worm and a worm gear, and the transmission rod drives a gear ring to rotate through a transmission gear; the gear ring drives the transmission gear at one end of the rotating rod to rotate, then the adjusting plate is driven to rotate, the air inlet amount is adjusted, manual adjustment is not needed, convenience and rapidness are achieved, and through arrangement of the partition plates in the inserting cylinder, air inlet turbulence is eliminated, it is guaranteed that entering airflow is evenly distributed, and combustion stability is improved; and the threaded sleeve is reversely rotated to drive the external threaded cylinder to move, so that the external threaded cylinder is controlled to extrude the insertion cylinder, the insertion cylinder is conveniently pulled out to clean and maintain a partition plate in the insertion cylinder, and carbon deposition caused by long-term use, airflow resistance increase and influence on the efficiency of the combustor are avoided.

Description

Technical Field

[0001] This utility model relates to the field of low-NOx burner technology, and in particular to a low-NOx burner with automatic air volume adjustment. Background Technology

[0002] A low-NOx burner is a combustion device designed to reduce nitrogen oxide emissions. Nitrogen oxides are a class of harmful gases, mainly generated by the reaction of nitrogen and oxygen at high temperatures during combustion. They have a negative impact on the environment and human health. Low-NOx burners achieve environmental protection by optimizing the combustion process, lowering the combustion temperature, and reducing the generation of nitrogen oxides.

[0003] When using a low-NOx burner, the amount of air entering through the air inlet is controlled, thereby controlling the ratio of fuel to air inside the burner, reducing the use of excess air, lowering the combustion temperature, and thus reducing the generation of nitrogen oxides, which plays an environmental protection role.

[0004] When using existing low-NOx burners, if there is a fuel switch or a change in fuel supply, the air volume needs to be adjusted to maintain the optimal air-fuel ratio. However, existing low-NOx burners usually require manual adjustment by workers, which is inconvenient to use. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides a low-NOx burner with automatic air volume adjustment.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a low-NOx burner with automatic air volume adjustment, comprising a burner body, a base plate fixedly connected to the top of the burner body, an air inlet pipe fixedly connected to the top of the base plate, a fixed box fixedly connected to the outer surface of the air inlet pipe, an adjustment component disposed inside the fixed box, and a rectifier component disposed on the outer surface of the air inlet pipe.

[0009] The adjustment assembly includes several rotating rods interspersed inside the air inlet pipe. A fixed plate is movably connected to one end of the rotating rod near the inside of the air inlet pipe. An adjustment plate is fixedly connected to the outer surface of the rotating rod. A transmission gear is fixedly connected to the other end of the rotating rod away from the air inlet pipe. A gear ring that meshes with the transmission gear is movably connected to the outer surface of the air inlet pipe.

[0010] The rectifier assembly includes a baffle fixedly installed on the outer surface of the air inlet pipe. A tube is inserted inside the air inlet pipe, and several partitions are provided inside the tube. External threaded cylinders are movably connected to the outer surface of the air inlet pipe above and below the tube. Threaded sleeves are meshed on the outer surfaces of the two external threaded cylinders.

[0011] In a preferred embodiment of the low-NOx burner with automatic airflow adjustment described in this utility model, a motor is fixedly connected inside the fixed box, a worm gear is fixedly connected to the output end of the motor, a transmission rod is movably connected between the outer surface of the air inlet pipe and the inner wall of the fixed box, a transmission gear is fixedly connected to the outer surface of the transmission rod near the gear ring, a worm wheel is fixedly connected to the outer surface of the transmission rod, and the worm gear and the worm wheel are meshed together.

[0012] As a preferred embodiment of the low-NOx burner with automatic air volume adjustment described in this utility model, the inner side of the toothed ring is provided with an annular protrusion, and the outer surface of the air inlet pipe is provided with an annular groove that cooperates with the annular protrusion. The toothed ring rotates on the outer surface of the air inlet pipe through the cooperation of the annular protrusion and the annular groove.

[0013] In a preferred embodiment of the low-NOx burner with automatic air volume adjustment described in this utility model, when the adjustment plate is in a horizontal state, the mutual abutment between several adjustment plates can seal the inner wall of the air inlet pipe.

[0014] As a preferred embodiment of the low-NOx burner with automatic air volume adjustment described in this utility model, the bottom of the air inlet pipe is provided with an inlet, the inner wall of the inlet is provided with a limiting protrusion, and the outer surface of the insert is provided with a groove that cooperates with the limiting protrusion.

[0015] As a preferred embodiment of the low-NOx burner with automatic air volume adjustment described in this utility model, the outer surface of the air inlet pipe is provided with a groove for the movement of the external threaded cylinder, the inner wall of the groove is fixedly connected with a limiting strip, the end of the external threaded cylinder near the insert is provided with an opening that cooperates with the limiting strip, and the end of the external threaded cylinder near the insert is provided with a flexible strip.

[0016] (III) Beneficial Effects

[0017] This invention provides a low-NOx burner with automatic airflow adjustment. It has the following beneficial effects:

[0018] 1. The worm gear is controlled by a motor to rotate. The worm gear and worm wheel work together to drive the transmission rod to rotate. The transmission gear on the outer surface of the transmission rod drives the gear ring to rotate. The gear ring drives the transmission gear at one end of the rotating rod to rotate. In turn, the rotation of the rotating rod drives the adjustment plate to rotate. This controls the size of the gap in the air inlet pipe opened by the adjustment plate, thereby adjusting the air intake volume. No manual adjustment is required, making it convenient and quick.

[0019] 2. By setting up internal baffles in the insert, intake turbulence is eliminated, ensuring uniform distribution of incoming airflow and improving combustion stability. By rotating the threaded sleeve in the opposite direction to drive the external threaded cylinder to move, the compression of the insert by the external threaded cylinder is controlled, thereby facilitating the removal of the insert to clean and maintain the internal baffles, avoiding carbon buildup caused by long-term use, which increases airflow resistance and affects burner efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the air inlet pipe of this utility model.

[0023] Figure 3 This is a schematic diagram of the structure of the adjustment component of this utility model.

[0024] Figure 4 This is an exploded structural diagram of the rectifier component of this utility model.

[0025] In the diagram, 1. Burner body; 2. Air inlet pipe; 3. Fixing box; 4. Base plate; 5. Adjustment assembly; 501. Adjustment plate; 502. Fixing plate; 503. Rotating rod; 504. Transmission gear; 505. Motor; 506. Worm gear; 507. Transmission rod; 508. Worm wheel; 509. Gear ring; 6. Rectifier assembly; 601. Stop block; 602. Limiting strip; 603. Partition plate; 604. Insert sleeve; 605. External threaded sleeve; 606. Threaded sleeve. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Example 1

[0028] Reference Figure 1 , Figure 2 and Figure 3 This is the first embodiment of the present invention. This embodiment provides a low-NOx burner with automatic air volume adjustment, including a burner body 1, a base plate 4 fixedly connected to the top of the burner body 1, an air inlet pipe 2 fixedly connected to the top of the base plate 4, a fixing box 3 fixedly connected to the outer surface of the air inlet pipe 2, an adjustment component 5 disposed inside the fixing box 3, and a rectifier component 6 disposed on the outer surface of the air inlet pipe 2.

[0029] The adjustment assembly 5 includes several rotating rods 503 that are interspersed inside the air inlet pipe 2. A fixed plate 502 is movably connected to one end of the rotating rod 503 near the inside of the air inlet pipe 2. An adjustment plate 501 is fixedly connected to the outer surface of the rotating rod 503. A transmission gear 504 is fixedly connected to the other end of the rotating rod 503 away from the air inlet pipe 2. A gear ring 509 that cooperates with the transmission gear 504 is movably connected to the outer surface of the air inlet pipe 2.

[0030] Specifically, a motor 505 is fixedly connected inside the fixed box 3. A worm gear 506 is fixedly connected to the output end of the motor 505. A transmission rod 507 is movably connected between the outer surface of the air inlet pipe 2 and the inner wall of the fixed box 3. A transmission gear 504 is fixedly connected to the outer surface of the end of the transmission rod 507 near the gear ring 509. A worm wheel 508 is fixedly connected to the outer surface of the transmission rod 507. The worm gear 506 and the worm wheel 508 are meshed together. By utilizing the unidirectional transmission characteristic of the worm wheel 508 and the worm gear 506, the adjusting plate 501 is locked, preventing the adjusting plate 501 from rotating due to strong winds.

[0031] Specifically, the inner side of the toothed ring 509 is provided with an annular protrusion, and the outer surface of the air inlet pipe 2 is provided with an annular groove that cooperates with the annular protrusion. The toothed ring 509 rotates on the outer surface of the air inlet pipe 2 through the cooperation of the annular protrusion and the annular groove. The cooperation of the annular protrusion and the annular groove realizes the limiting of the toothed ring 509, prevents the toothed ring 509 from tilting, and ensures the stability of the rotation of the toothed ring 509.

[0032] Specifically, when the regulating plate 501 is in a horizontal state, the mutual abutment between several regulating plates 501 can seal the inner wall of the air inlet pipe 2. By limiting the size of the regulating plate 501, it is ensured that the regulating plate 501 can completely seal the air inlet pipe.

[0033] Furthermore, the worm gear 506 is rotated by the motor 505. The worm gear 506, in conjunction with the worm wheel 508, drives the transmission rod 507 to rotate. The transmission gear 504 on the outer surface of the transmission rod 507 drives the gear ring 509 to rotate. In turn, the gear ring 509 drives the transmission gear 504 at one end of the rotating rod 503 to rotate. The rotation of the rotating rod 503 then drives the adjusting plate 501 to rotate, thereby controlling the size of the gap in the air inlet pipe 2 opened by the adjusting plate 501 and adjusting the air intake volume. This eliminates the need for manual adjustment, making it convenient and quick.

[0034] Example 2

[0035] Reference Figure 1 , Figure 2 and Figure 4 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The rectifier assembly 6 includes a baffle 601 fixedly installed on the outer surface of the air inlet pipe 2. An insert 604 is inserted inside the air inlet pipe 2. Several partitions 603 are provided inside the insert 604. External threaded cylinders 605 are movably connected to the outer surface of the air inlet pipe 2 above and below the insert 604. Threaded sleeves 606 are meshed with the outer surfaces of the two external threaded cylinders 605.

[0036] Specifically, the bottom of the air inlet pipe 2 is provided with an inlet, the inner wall of the inlet is provided with a limiting protrusion, and the outer surface of the insert 604 is provided with a groove that matches the limiting protrusion. Through the cooperation of the inlet, the limiting protrusion and the groove, the insertion of the limiting insert 604 is realized, ensuring that the insert 604 can be inserted into the air inlet pipe at the correct angle, and avoiding the insertion 604 tilting, which would affect the air intake.

[0037] Specifically, the outer surface of the air inlet pipe 2 is provided with a groove for the movement of the external threaded cylinder 605. A limiting strip 602 is fixedly connected to the inner wall of the groove. The end of the external threaded cylinder 605 near the insert 604 is provided with an opening that cooperates with the limiting strip 602. A flexible strip is provided at the end of the external threaded cylinder 605 near the insert 604. By cooperating with the opening on the outer surface of the external threaded cylinder 605, the external threaded cylinder 605 is limited, preventing the external threaded cylinder 605 from rotating with the rotation of the threaded sleeve 606. The flexible strip improves the sealing performance of the contact between the external threaded cylinder 605 and the insert 604, preventing air leakage.

[0038] Furthermore, the internal baffle 603 of the insert 604 eliminates intake turbulence and ensures uniform airflow distribution, thereby reducing flame pulsation and improving combustion stability. After use, the threaded sleeve 606 is rotated in the reverse direction, causing the external threaded cylinder 605 to move. This releases the external threaded cylinder 605 from the compression of the insert 604, allowing the insert 604 to be removed from its limiting position and thus extracted from the air inlet pipe 2. This facilitates cleaning and maintenance of the internal baffle 603 of the insert 604, preventing buildup from long-term use. Carbon increases airflow resistance. To avoid affecting burner efficiency, the upper threaded sleeve 606 is limited by the cooperation of the fixed box 3 and the stop block 601, preventing it from moving vertically. The lower threaded sleeve 606 is limited by the cooperation of the base plate 4 and the stop block 601. This prevents the threaded sleeve 606 from moving longitudinally and causing the outer threaded cylinder 605 to move. Several baffles 603 form a honeycomb structure inside the insert 604, which helps the air to flow in evenly after passing through the honeycomb gaps.

[0039] Working Principle: When using the low-NOx burner, the airflow is adjusted according to the type and amount of fuel used. Motor 505 controls the rotation of worm gear 506. The worm gear 506, in conjunction with worm wheel 508, drives transmission rod 507. Transmission gear 504 on the outer surface of transmission rod 507 drives gear ring 509, which in turn drives transmission gear 504 at one end of rotating rod 503. This rotation of rotating rod 503 then drives adjusting plate 501, thus controlling the opening size of the air inlet pipe 2 and adjusting the airflow. No manual adjustment is required, making it convenient and quick. Air enters through the baffle 603 inside the insert 604. The airflow enters the burner, and through the internal baffle 603 of the insert 604, intake turbulence is eliminated, ensuring uniform distribution of the incoming airflow, thereby reducing flame pulsation and improving combustion stability. After the burner is used, the threaded sleeve 606 is rotated in the reverse direction, which drives the external threaded cylinder 605 to move. This releases the external threaded cylinder 605 from the compression of the insert 604, thus removing the compression limit from the insert 604. This allows the insert 604 to be pulled out from the inside of the air inlet pipe 2, facilitating the cleaning and maintenance of the baffle 603 inside the insert 604. This prevents carbon buildup caused by long-term use, which increases airflow resistance and affects burner efficiency, ultimately completing the use of the low-NOx burner.

[0040] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A low-NOx burner with automatic airflow regulation, comprising a burner body (1), characterized in that: A base plate (4) is fixedly connected to the top of the burner body (1), an air inlet pipe (2) is fixedly connected to the top of the base plate (4), a fixed box (3) is fixedly connected to the outer surface of the air inlet pipe (2), an adjustment component (5) is provided inside the fixed box (3), and a rectifier component (6) is provided on the outer surface of the air inlet pipe (2). The adjustment assembly (5) includes several rotating rods (503) interspersed inside the air inlet pipe (2). A fixed plate (502) is movably connected to one end of the rotating rod (503) near the inside of the air inlet pipe (2). An adjustment plate (501) is fixedly connected to the outer surface of the rotating rod (503). A transmission gear (504) is fixedly connected to one end of the rotating rod (503) away from the air inlet pipe (2). A gear ring (509) that cooperates with the transmission gear (504) is movably connected to the outer surface of the air inlet pipe (2). The rectifier assembly (6) includes a stop block (601) fixedly installed on the outer surface of the air inlet pipe (2). A tube (604) is inserted inside the air inlet pipe (2). Several partitions (603) are provided inside the tube (604). External threaded cylinders (605) are movably connected to the outer surface of the air inlet pipe (2) above and below the tube (604). Threaded sleeves (606) are meshed on the outer surfaces of the two external threaded cylinders (605).

2. The low-NOx burner with automatic airflow adjustment according to claim 1, characterized in that: A motor (505) is fixedly connected inside the fixed box (3). A worm gear (506) is fixedly connected to the output end of the motor (505). A transmission rod (507) is movably connected between the outer surface of the air inlet pipe (2) and the inner wall of the fixed box (3). The same transmission gear (504) is fixedly connected to the outer surface of the end of the transmission rod (507) near the gear ring (509). A worm wheel (508) is fixedly connected to the outer surface of the transmission rod (507). The worm gear (506) and the worm wheel (508) are meshed together.

3. A low NOx burner with automatic air flow adjustment according to claim 2, characterized in that: The inner side of the toothed ring (509) is provided with an annular protrusion, and the outer surface of the air inlet pipe (2) is provided with an annular groove that cooperates with the annular protrusion. The toothed ring (509) rotates on the outer surface of the air inlet pipe (2) through the cooperation of the annular protrusion and the annular groove.

4. A low-NOx burner with automatic airflow adjustment according to claim 3, characterized in that: When the adjustment plate (501) is in a horizontal state, the several adjustment plates (501) abut against each other to seal the inner wall of the air inlet pipe (2).

5. A low-NOx burner with automatic airflow adjustment according to claim 4, characterized in that: The bottom of the air inlet pipe (2) is provided with an inlet, the inner wall of the inlet is provided with a limiting protrusion, and the outer surface of the insert (604) is provided with a groove that matches the limiting protrusion.

6. A low-NOx burner with automatic airflow adjustment according to claim 5, characterized in that: The outer surface of the air inlet pipe (2) is provided with a groove for the movement of the external threaded cylinder (605). A limiting strip (602) is fixedly connected to the inner wall of the groove. An opening that cooperates with the limiting strip (602) is provided at one end of the external threaded cylinder (605) near the insert (604). A flexible strip is provided at one end of the external threaded cylinder (605) near the insert (604).

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