A porous media recuperative low-nitrogen burner nozzle

Abstract

This utility model discloses a porous media regenerative low-NOx burner nozzle, including a wind box. A tube is disposed on the front side of the wind box, and the back side of the tube is fixedly connected to the front side of the wind box via a first bolt. A heat-conducting pipe is disposed on the outer arc surface of the tube, and a heat-conducting grid is disposed at the bottom of the front side of the wind box. Both ends of the heat-conducting pipe are fixedly connected to the front side of the heat-conducting grid. This utility model provides a porous media regenerative low-NOx burner nozzle that effectively utilizes the high-temperature flue gas generated during combustion to preheat the air entering the wind box. The preheated air temperature is significantly increased, promoting fuel-air mixing and combustion efficiency, and avoiding incomplete combustion caused by low inlet air temperature. This not only improves thermal energy utilization and reduces fuel consumption but also helps reduce the generation of nitrogen oxides, meeting the environmental protection requirements of energy conservation and emission reduction, and is suitable for high-temperature equipment such as industrial furnaces and kilns.

Description

Technical Field

[0001] This utility model relates to the field of burner technology, specifically to a porous medium regenerative low-NOx burner nozzle. Background Technology

[0002] The patent application with publication number CN110671699A includes a cylindrical cavity, a burner control assembly, and a transmission assembly, with the burner control assembly and transmission assembly located inside the cylindrical cavity. The burner control assembly includes a flame manifold and a track sleeve. The track sleeve is located at the right end inside the flame manifold. A stepping gear rod is located at the right end outside the flame manifold, and a stepping screw is located at the left end of the stepping gear rod. A stepping nut fixed to the cylindrical cavity is threadedly connected to the outside of the stepping screw. The transmission assembly includes a power gear, a transmission rod, a cross coupling, and an adjusting rod. The advantages are: this invention can adjust the flame direction and flame length of the flame manifold nozzle by controlling the rotation and movement of the flame manifold, ultimately adjusting the flame of the flame manifold nozzle to the optimal state matching the furnace, thereby effectively reducing the FGR flue gas recirculation flow and achieving energy saving and emission reduction.

[0003] In the aforementioned patents or prior art, there is a possibility that the combustion process may result in incomplete combustion due to low intake air temperature, thus producing excessive exhaust gas. Utility Model Content

[0004] The purpose of this invention is to provide a porous medium regenerative low-NOx burner nozzle to solve the problem of low intake temperature and incomplete combustion mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a porous medium regenerative low-NOx burner nozzle, comprising a wind box, a tube body being provided on the front side of the wind box, the back side of the tube body being fixedly connected to the front side of the wind box by a first bolt, a heat-conducting pipe being provided on the outer arc surface of the tube body, a heat-conducting grid being provided at the bottom of the front side of the wind box, and the two ends of the heat-conducting pipe being fixedly connected to the front side of the heat-conducting grid.

[0006] Furthermore, the outer arc surface of the tube body is provided with four heat-conducting fins arranged in a ring array. One end of each of the four heat-conducting fins penetrates the tube body and extends into the interior. A perforated plate is provided inside the tube body. One end of each of the four heat-conducting fins is fixedly connected to the outer arc surface of the perforated plate. A second conical tube is provided on the front side of the perforated plate.

[0007] Furthermore, a motor is provided on one side of the air box, and one side of the motor is fixedly connected to one side of the air box by a second bolt. The drive shaft of the motor passes through one side of the air box and extends into the interior, and an impeller is fixedly connected to one end of the drive shaft.

[0008] Furthermore, a fuel pipe is provided on the back side of the perforated plate, one end of which is fixedly connected to a nozzle, and an ignition electrode is provided on the top of the fuel pipe, one end of which penetrates the back side of the perforated plate and extends to the outside.

[0009] Furthermore, a first tapered tube is provided on the back of the perforated plate, and the top, bottom and sides of the first tapered tube are fixedly connected to the inner wall of the air box.

[0010] Furthermore, a feed pipe is provided on the other side of the air box, one end of which penetrates through the other side of the air box and extends into the interior, and one end of the feed pipe is fixedly connected to the other end of the fuel pipe.

[0011] Furthermore, a switch is provided on the top of one side of the bellows, a temperature control panel is provided on the top of the back of the bellows, and a windproof plate is provided on the front of the second conical tube.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the porous medium regenerative low-NOx burner nozzle is reasonable and has the following advantages: (1) The burner nozzle utilizes multiple heat-conducting structures, including heat-conducting pipes, heat-conducting grids, and heat-conducting plates, to effectively preheat the air entering the air box using the high-temperature flue gas generated during combustion. The preheated air temperature is significantly increased, promoting fuel-air mixing and combustion efficiency, and avoiding incomplete combustion caused by low inlet air temperature. This not only improves thermal energy utilization and reduces fuel consumption but also helps reduce nitrogen oxide generation, meeting the environmental protection requirements of energy conservation and emission reduction, and is suitable for high-temperature equipment such as industrial furnaces and kilns; (2) The nozzle is internally equipped with a perforated plate, a first conical tube, and a second conical tube, which can pressurize and mix air and fuel in stages to form a uniform and stable gas mixture. The ignition electrode works in conjunction with the nozzle to ensure reliable ignition and stable flame. The wind deflector further enhances the flame's anti-interference ability and prevents the flame from flickering or going out due to external airflow. The overall structure is compact and firmly connected, making it suitable for harsh working conditions such as high temperature and high pressure. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the overall structure of this utility model; Figure 4 This is a schematic diagram of the heat-conducting sheet structure of this utility model; Figure 5 This is a schematic diagram of the heat pipe structure of this utility model.

[0014] In the diagram: 1. Bellows; 2. Impeller; 3. First conical tube; 4. Fuel pipe; 5. Ignition electrode; 6. Wind deflector; 7. Heat-conducting plate; 8. Tube body; 9. Second conical tube; 10. Perforated plate; 11. Nozzle; 12. Heat-conducting pipe; 13. Heat-conducting grid; 14. Temperature control panel; 15. Switch; 16. Motor; 17. First bolt; 18. Feed pipe; 19. Second bolt. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 The present invention provides a technical solution as follows: Example 1: In this embodiment, a porous medium regenerative low-NOx burner nozzle includes a wind box 1. A tube body 8 is provided on the front side of the wind box 1. The back side of the tube body 8 is fixedly connected to the front side of the wind box 1 by a first bolt 17. A heat-conducting pipe 12 is provided on the outer arc surface of the tube body 8. A heat-conducting grid 13 is provided at the bottom of the front side of the wind box 1. The two ends of the heat-conducting pipe 12 are fixedly connected to the front side of the heat-conducting grid 13.

[0017] In this embodiment, four heat-conducting plates 7 are arranged in a ring array on the outer arc surface of the tube body 8. One end of each heat-conducting plate 7 penetrates the tube body 8 and extends into the interior. A perforated plate 10 is arranged inside the tube body 8. One end of each heat-conducting plate 7 is fixedly connected to the outer arc surface of the perforated plate 10. A second conical tube 9 is arranged on the front side of the perforated plate 10.

[0018] In this embodiment, a motor 16 is provided on one side of the air box 1. One side of the motor 16 is fixedly connected to one side of the air box 1 by a second bolt 19. The drive shaft of the motor 16 passes through one side of the air box 1 and extends into the interior. One end of the drive shaft of the motor 16 is fixedly connected to an impeller 2.

[0019] In this embodiment, a fuel pipe 4 is provided on the back side of the perforated plate 10. One end of the fuel pipe 4 is fixedly connected to a nozzle 11. An ignition electrode 5 is provided on the top of the fuel pipe 4. One end of the ignition electrode 5 passes through the back side of the perforated plate 10 and extends to the outside.

[0020] In this embodiment, a first tapered tube 3 is provided on the back of the perforated plate 10, and the top, bottom and sides of the first tapered tube 3 are fixedly connected to the inner wall of the bellows 1.

[0021] In this embodiment, a feed pipe 18 is provided on the other side of the air box 1. One end of the feed pipe 18 passes through the other side of the air box 1 and extends into the interior. One end of the feed pipe 18 is fixedly connected to the other end of the fuel pipe 4.

[0022] In this embodiment, a switch 15 is provided on the top of one side of the bellows 1, a temperature control panel 14 is provided on the top of the back of the bellows 1, and a windproof plate 6 is provided on the front of the second conical tube 9.

[0023] Working principle: In use, first turn on switch 15 to make motor 16 work and drive impeller 2 to rotate, so that external air can enter the air box 1 through heat conduction grid 13. Then it is pressurized through first conical tube 3. Fuel goes through feed pipe 18 to fuel pipe 4 and finally sprays out from nozzle 11. Under the pressure of high-pressure air, it enters the porous plate 10 with fine pores and is accelerated to mix. Finally, the mixed gas is sprayed out from second conical tube and ignited by ignition electrode 5. The flame is continuously sprayed to heat the target object. During this process, affected by the flame temperature, heat conduction plate 7 and heat conduction pipe 12 are heated and transfer heat to the porous plate 10 and heat conduction grid 13 to help heat up the auxiliary gas to ensure complete combustion.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A porous media regenerative low-NOx burner nozzle, comprising a windbox (1), characterized in that: The front of the air box (1) is provided with a tube body (8), and the back of the tube body (8) is fixedly connected to the stop surface of the air box (1) by a first bolt (17). A heat-conducting pipe (12) is provided on the outer arc surface of the tube body (8), and a heat-conducting grid (13) is provided at the bottom of the front of the air box (1). The two ends of the heat-conducting pipe (12) are fixedly connected to the front of the heat-conducting grid (13).

2. The porous media regenerative low-NOx burner nozzle according to claim 1, characterized in that: The outer arc surface of the tube body (8) is provided with four heat-conducting plates (7) arranged in a ring array. One end of each of the four heat-conducting plates (7) penetrates the tube body (8) and extends into the interior. A perforated plate (10) is provided inside the tube body (8). One end of each of the four heat-conducting plates (7) is fixedly connected to the outer arc surface of the perforated plate (10). A second conical tube (9) is provided on the front side of the perforated plate (10).

3. The porous media regenerative low-NOx burner nozzle according to claim 1, characterized in that: A motor (16) is provided on one side of the wind box (1). One side of the motor (16) is fixedly connected to one side of the wind box (1) by a second bolt (19). The drive shaft of the motor (16) passes through one side of the wind box (1) and extends into the interior. One end of the drive shaft of the motor (16) is fixedly connected to an impeller (2).

4. The porous media regenerative low-NOx burner nozzle according to claim 2, characterized in that: A fuel pipe (4) is provided on the back side of the porous plate (10). One end of the fuel pipe (4) is fixedly connected to a nozzle (11). An ignition electrode (5) is provided on the top of the fuel pipe (4). One end of the ignition electrode (5) penetrates the back side of the porous plate (10) and extends to the outside.

5. A porous media regenerative low-NOx burner nozzle according to claim 2, characterized in that: The back of the perforated plate (10) is provided with a first tapered tube (3), the top, bottom and sides of the first tapered tube (3) are fixedly connected to the inner wall of the bellows (1).

6. The porous media regenerative low-NOx burner nozzle according to claim 1, characterized in that: A feed pipe (18) is provided on the other side of the air box (1). One end of the feed pipe (18) passes through the other side of the air box (1) and extends into the interior. One end of the feed pipe (18) is fixedly connected to the other end of the fuel pipe (4).

7. A porous media regenerative low-NOx burner nozzle according to claim 2, characterized in that: A switch (15) is provided on the top of one side of the bellows (1), a temperature control panel (14) is provided on the top of the back of the bellows (1), and a windproof plate (6) is provided on the front of the second conical tube (9).

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