Flameless burner
By using air ring tubes, fuel ring tubes and shunt tubes in flameless burners for multi-angle injection, and using blade rotation to achieve efficient mixing, the problem of low fuel and air mixing efficiency is solved, and the fuel is fully burned and pollution reduction is achieved.
Patent Information
- Application Number
- CN202421481984.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-26
AI Technical Summary
Some flameless burners have low mixing time during the mixing process, and are limited by the overall length of the burner, resulting in a lack of effective mixing time during the mixing process, low mixing efficiency and insufficient combustion.
A flameless burner is designed, using an air ring tube and a fuel ring tube to combine multiple shunt tubes for multi-angle injection, and efficient mixing of air and fuel is achieved through the rotation of the blades. After the fuel and air are processed by the mixing member and the preheating line component, the fuel and air are ignited by an electric heating wire at the combustion nozzle to produce a flameless blue flame.
By improving the mixing efficiency of air and fuel, sufficient combustion of fuel is achieved, the generation of open flames and chimney effects are avoided, and pollution emissions are reduced.
Smart Images
Figure CN222760882U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of burners, and more specifically, to a flameless burner. Background Art
[0002] The flameless burner uses premixed combustion technology to premix air and fuel before burning, avoiding the open flame combustion process of traditional flame burners. During the premixed combustion process, the mixing ratio and speed of fuel and air are carefully controlled, so that the fuel is fully mixed and burned in the combustion chamber, producing a flameless blue flame. However, some flameless burners lack effective mixing time during the mixing process because the fuel and air enter from the same side during the transportation process and are limited by the overall length of the burner, resulting in low mixing efficiency and insufficient combustion. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a flameless burner, including a combustion-supporting pipe and a combustion nozzle located at the front section of the combustion-supporting pipe, an outer cover is provided on the outside of the combustion-supporting pipe, an air pipe component extending to the inside of the combustion-supporting pipe is provided inside the outer cover, a mixing element is provided on one side of the air pipe component inside the combustion-supporting pipe, a preheating pipeline component is provided on the side of the mixing element away from the air pipe component, the preheating pipeline component extends toward the combustion nozzle, fuel and air enter into the interior of the combustion-supporting pipe from the air pipe component, and are successively transported to the combustion nozzle through the mixing element and the preheating pipeline component, and an electric heating wire is installed at the combustion nozzle.
[0004] In a preferred embodiment, the air pipe component includes a fuel ring tube sleeved on the outside of the combustion-supporting pipe and an air ring tube located inside the combustion-supporting pipe, a plurality of first shunt pipes parallel to the extension direction of the combustion-supporting pipe are installed on the air ring tube, the first shunt pipes face one side of the combustion nozzle, a plurality of second shunt pipes penetrating the combustion-supporting pipe and extending to the inside of the combustion-supporting pipe are installed on the fuel ring tube, and the first shunt pipes and the second shunt pipes are arranged vertically;
[0005] An air input pipe penetrating the combustion-supporting pipeline and the outer cover is installed on the air ring pipe, and a fuel input pipe penetrating the outer cover is installed on the fuel ring pipe.
[0006] In a preferred embodiment, the mixing element includes a first partition and a second partition fixed on the inner wall of the combustion-supporting pipe, a plurality of first diversion tubes and a second diversion tube are respectively located on both sides of the first partition, a plurality of second diversion tubes are located between the first partition and the second partition, and the ends of the plurality of first diversion tubes are inserted into the first partition.
[0007] In a preferred embodiment, a rotating shaft passes through the first partition plate, and a plurality of blades are installed on the outer wall of the rotating shaft. The extending direction of the blades is parallel to the extending direction of the rotating shaft, and a groove for the end of the second diversion pipe to pass through is opened at the edge of the blade.
[0008] In a preferred embodiment, the second partition is funnel-shaped, a bearing is installed at the end of the rotating shaft close to the second partition, a plurality of connecting rods are connected between the outer wall of the bearing and the second partition, and the other end of the rotating shaft extends to the other side of the first partition and is connected to a drive motor.
[0009] In a preferred embodiment, a through hole is opened in the middle of the second partition, and the preheating pipeline component includes a spiral pipeline connected to the through hole, the other end of the spiral pipeline is connected to the combustion nozzle, and a fixing ring fixed to the inner wall of the combustion-supporting pipeline is sleeved on the outside of the spiral pipeline, and a plurality of heating tubes are installed on the fixing ring.
[0010] Technical effects and advantages of the utility model:
[0011] The utility model utilizes an air ring tube and a fuel ring tube in conjunction with a plurality of first shunt tubes and a second shunt tube to inject air and fuel at multiple angles, and utilizes the rotation of blades to achieve mixing, which can greatly improve the mixing efficiency and mixing efficiency of air and fuel, enable them to burn fully, avoid the generation of open flames during the combustion process, and prevent the occurrence of a chimney effect, thereby reducing pollution emissions. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 It is a schematic diagram of the internal structure of the utility model;
[0014] Figure 3 This is a schematic diagram of the internal structure of the utility model from another angle.
[0015] Explanation of the reference numerals: 1 combustion nozzle, 2 combustion-supporting pipe, 3 outer cover, 4 air pipe component, 41, fuel ring pipe, 411 second branch pipe, 412 fuel input pipe, 42 air ring pipe, 421 first branch pipe, 422 air input pipe, 5 mixing element, 51 first baffle, 52 second baffle, 53 rotating shaft, 54 blades, 55 grooves, 56 bearings, 57 connecting rod, 6 preheating pipeline component, 61 spiral pipeline, 62 fixing ring, 63 heating pipe, 7 electric heating wire, 8 driving motor, 9 through hole. DETAILED DESCRIPTION
[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.
[0017] like Figure 1-3 A flameless burner shown includes a combustion-supporting pipe 2 and a combustion nozzle 1 located at the front section of the combustion-supporting pipe 2, an outer cover 3 is sleeved on the outside of the combustion-supporting pipe 2, an air pipe component 4 extending to the inside of the combustion-supporting pipe 2 is arranged inside the outer cover 3, a mixing element 5 located on one side of the air pipe component 4 is arranged inside the combustion-supporting pipe 2, a preheating pipeline component 6 is arranged on the side of the mixing element 5 away from the air pipe component 4, the preheating pipeline component 6 extends to the side of the combustion nozzle 1, fuel and air enter the inside of the combustion-supporting pipe 2 from the air pipe component 4, and are transported to the combustion nozzle 1 through the mixing element 5 and the preheating pipeline component 6 in turn, and an electric heating wire 7 is installed at the combustion nozzle 1;
[0018] Based on the above, when in use, air and fuel are transported from the air pipe component 4 to the interior of the combustion-supporting pipe 2, mixed through the mixing element 5, and then transported to the preheating pipeline component 6. After being preheated by the preheating pipeline component 6, they are ejected and burned at the combustion nozzle 1, so that the fuel is fully burned after mixing, producing a flameless blue flame.
[0019] The air pipe component 4 includes a fuel ring pipe 41 sleeved on the outside of the combustion-supporting pipe 2 and an air ring pipe 42 located inside the combustion-supporting pipe 2, a plurality of first shunt pipes 421 parallel to the extension direction of the combustion-supporting pipe 2 are installed on the air ring pipe 42, the first shunt pipes 421 face the combustion nozzle 1, and a plurality of second shunt pipes 411 penetrating the combustion-supporting pipe 2 and extending to the inside of the combustion-supporting pipe 2 are installed on the fuel ring pipe 41, and the first shunt pipes 421 and the second shunt pipes 411 are arranged vertically;
[0020] An air inlet pipe 422 penetrating the combustion-supporting pipe 2 and the outer cover 3 is installed on the air ring pipe 42 , and a fuel inlet pipe 412 penetrating the outer cover 3 is installed on the fuel ring pipe 41 .
[0021] Based on the above, the air used for combustion and combustion support is transported from the air input pipe 422 to the air ring pipe 42 in the combustion-supporting pipe 2, and then enters the interior of the combustion-supporting pipe 2 through several first branch pipes 421 on the air ring pipe 42, while the fuel part is transported from the fuel input pipe 412 to the fuel ring pipe 41 in the outer cover 3, and then enters the interior of the combustion-supporting pipe 2 from several second branch pipes 411 on the fuel ring pipe 41.
[0022] The mixing element 5 includes a first partition plate 51 and a second partition plate 52 fixed on the inner wall of the combustion-supporting pipe 2, a plurality of first shunt pipes 421 and a second shunt pipe 411 are respectively located on both sides of the first partition plate 51, a plurality of second shunt pipes 411 are located between the first partition plate 51 and the second partition plate 52, and the ends of the plurality of first shunt pipes 421 are plugged into the first partition plate 51;
[0023] Based on the above, the first partition 51 and the second partition 52 separate a space inside the combustion-supporting pipe 2, and the space is used to provide a place for mixing the air and fuel input into the combustion-supporting pipe 2. The end of the first diverter pipe 421 is inserted into the first partition 51, and the second diverter pipe 411 is located between the first partition 51 and the second partition 52. The first diverter pipe 421 transports air to between the first partition 51 and the second partition 52, and the second diverter pipe 411 transports fuel to between the first partition 51 and the second partition 52.
[0024] A rotating shaft 53 passes through the first partition plate 51, and a plurality of blades 54 are installed on the outer wall of the rotating shaft 53. The extending direction of the blades 54 is parallel to the extending direction of the rotating shaft 53, and a groove 55 for the end of the second shunt pipe 411 to pass through is opened at the edge of the blade 54;
[0025] The second partition 52 is funnel-shaped, and a bearing 56 is installed at the end of the rotating shaft 53 close to one side of the second partition 52. A plurality of connecting rods 57 are connected between the outer wall of the bearing 56 and the second partition 52. The other end of the rotating shaft 53 extends to the other side of the first partition 51 and is connected to a driving motor 8.
[0026] Based on the above, one end of the rotating shaft 53 is connected to the driving motor 8 and the other end is installed on the second partition 52 through the bearing 56 and the connecting rod 57. When the air and fuel are transported to the area between the first partition 51 and the second partition 52, the driving motor 8 drives the rotating shaft 53 to rotate to drive the plurality of blades 54. The blades 54 mix the air and fuel during the rotation process.
[0027] Furthermore, the first diverter pipe 421 is located on one side of several blades 54, while the second diverter pipe 411 is directly facing the side of the blade 54, and the blade 54 has a groove 55 for the end of the second diverter pipe 411 to pass through. When air and fuel are transported, both will collide with the rotating blades 54 and the collision angles are different, and the rotation of the blades 54 is used to mix the two evenly.
[0028] On the basis of the above, the air ring tube 42 and the fuel ring tube 41 are used in conjunction with multiple first branch tubes 421 and second branch tubes 411 to inject air and fuel at multiple angles, and the mixing is achieved by rotating the blades 54. This can greatly improve the mixing efficiency and mixing efficiency of the air and fuel, so that they can be fully burned, avoid the generation of open flames during the combustion process, and prevent the chimney effect, thereby reducing pollution emissions.
[0029] A through hole 9 is provided in the middle of the second partition plate 52, and the preheating pipeline component 6 includes a spiral pipeline 61 connected to the through hole 9, and the other end of the spiral pipeline 61 is connected to the combustion nozzle 1. A fixing ring 62 fixed to the inner wall of the combustion-supporting pipeline 2 is sleeved on the outside of the spiral pipeline 61, and a plurality of heating pipes 63 are installed on the fixing ring 62;
[0030] Based on the above, when air and fuel are continuously transported to the combustion-supporting pipe 2, the mixed fuel and air are driven by pressure to enter the spiral pipe 61 from the through hole 9 on the second partition plate 52, and the spiral pipe 61 is used to increase the time they stay in the combustion-supporting pipe 2, and the heating pipe 63 is used to heat the area outside the spiral pipe to achieve preheating of the fuel and air, so that they are easier to ignite when entering the combustion nozzle 1, and their combustion rate is improved;
[0031] Furthermore, during operation, the temperature of the electric heating wire 7 increases, and when the mixed fuel and air are transported from the spiral pipe to the combustion nozzle 1, they are ignited by the high-temperature electric heating wire 7, generating a flameless blue flame that is ejected from the combustion nozzle 1.
[0032] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.
Claims
1. A flameless burner, characterized in that: It includes a combustion-supporting pipeline and a combustion nozzle located at the front section of the combustion-supporting pipeline, an outer cover is provided on the outside of the combustion-supporting pipeline, an air pipe component extending to the inside of the combustion-supporting pipeline is provided inside the outer cover, a mixing element is provided on one side of the air pipe component inside the combustion-supporting pipeline, a preheating pipeline component is provided on the side of the mixing element away from the air pipe component, the preheating pipeline component extends toward the combustion nozzle, fuel and air enter into the interior of the combustion-supporting pipeline from the air pipe component, and are transported to the combustion nozzle through the mixing element and the preheating pipeline component in turn, and an electric heating wire is installed at the combustion nozzle.
2. A flameless burner according to claim 1, characterized in that: The air pipe component includes a fuel ring tube sleeved on the outside of the combustion-supporting pipe and an air ring tube located inside the combustion-supporting pipe, a plurality of first flow dividers parallel to the extension direction of the combustion-supporting pipe are installed on the air ring tube, the first flow dividers face the combustion nozzle, and a plurality of second flow dividers are installed on the fuel ring tube, penetrating the combustion-supporting pipe and extending to the inside of the combustion-supporting pipe, and the first flow dividers and the second flow dividers are arranged vertically; An air input pipe penetrating the combustion-supporting pipeline and the outer cover is installed on the air ring pipe, and a fuel input pipe penetrating the outer cover is installed on the fuel ring pipe.
3. A flameless burner according to claim 2, characterized in that: The mixing element includes a first partition and a second partition fixed on the inner wall of the combustion-supporting pipe, a plurality of first diversion tubes and a second diversion tube are respectively located on both sides of the first partition, a plurality of second diversion tubes are located between the first partition and the second partition, and the ends of the plurality of first diversion tubes are plugged into the first partition.
4. A flameless burner according to claim 3, characterized in that: A rotating shaft passes through the first partition plate, and a plurality of blades are installed on the outer wall of the rotating shaft. The extending direction of the blades is parallel to the extending direction of the rotating shaft, and a groove for the end of the second diverter pipe to pass through is opened at the edge of the blade.
5. A flameless burner according to claim 4, characterized in that: The second partition is funnel-shaped, with a bearing installed at the end of the rotating shaft close to the second partition, and a plurality of connecting rods connected between the outer wall of the bearing and the second partition. The other end of the rotating shaft extends to the other side of the first partition and is connected to a driving motor.
6. A flameless burner according to claim 3, characterized in that: A through hole is opened in the middle of the second partition, and the preheating pipeline component includes a spiral pipeline connected to the through hole. The other end of the spiral pipeline is connected to the combustion nozzle. A fixing ring fixed to the inner wall of the combustion-supporting pipeline is sleeved on the outside of the spiral pipeline, and a plurality of heating tubes are installed on the fixing ring.