Infrared burner

Abstract

The invention relates to the technical field of cookers, in particular to an infrared burner which comprises a burner body, a combustion chamber is arranged in the burner body, a porous infrared combustion plate is correspondingly arranged at the top of the combustion chamber, a main injection pipe is arranged on one side of the burner body, and a flow guide assembly is arranged in the combustion chamber. The flow guide assembly limits rising of fuel gas on the side, close to the main injection pipe, of the combustion chamber, and meanwhile the flow guide assembly can guide the fuel gas to the side, away from the main injection pipe, of the combustion chamber. In addition, the fuel gas guided to the other side of the combustion chamber rises to the porous infrared combustion plate through the gas passing channel; secondly, the gas passing unit arranged on the flow guide assembly can guide the fuel gas located below the flow guide assembly to the position above the flow guide assembly, and the fuel gas relatively enriched below the flow guide assembly is guided to the space above the flow guide assembly; through the synergistic effect of the flow guide assembly and the gas passing unit, gas can be evenly distributed in the combustion chamber, and it is guaranteed that fire of the infrared combustion plate is evenly emitted.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking utensils, and specifically to an infrared burner. Background Art

[0002] With the continuous development of energy utilization and combustion technology, infrared burners have been widely used in many fields such as industrial heating, household stoves, and outdoor cooking utensils due to their many advantages such as high efficiency, energy conservation, and environmental protection.

[0003] The working principle of an infrared burner is mainly to introduce gas through an ejector tube, mix it with air, and the mixed gas burns on the surface of a porous infrared combustion plate to generate infrared radiation, thereby achieving efficient heat transfer.

[0004] Traditional infrared burners usually include main components such as a main ejector tube, a gas chamber, and a porous infrared combustion plate. The function of the main ejector tube is to transport gas to the gas chamber. In the gas chamber, after the gas is fully mixed with air, it burns through the porous infrared combustion plate.

[0005] However, there are some obvious problems in the actual use of existing infrared burners. Among them, the design and working mode of the main ejector tube have a crucial impact on the combustion effect. When the output end of the main ejector tube outputs gas, due to factors such as its structure and air flow characteristics, the gas rises prematurely. This premature rise causes the gas to fail to diffuse evenly to the other side of the gas chamber in an ideal manner.

[0006] In the gas chamber, the uniform distribution of gas is the key to ensuring consistent firepower of the porous infrared combustion plate. However, due to the premature rise and uneven diffusion of the gas, the distribution of gas in the gas chamber is uneven. The gas concentration on the side close to the output end of the main ejector tube is relatively high, while the gas concentration on the other side of the gas chamber is relatively low.

[0007] When the mixed gas burns through the porous infrared combustion plate, the difference in gas concentration directly leads to different combustion intensities in different regions of the porous infrared combustion plate. The region with a high gas concentration has a stronger firepower, while the region with a low gas concentration has a weaker firepower, and thus the firepower of the porous infrared combustion plate is inconsistent. This inconsistent firepower not only affects the heating effect and efficiency of the burner, but may also cause uneven heating of the object being heated, affecting product quality and user experience. For example, in a stove, there will be a phenomenon that some areas of the cookware are heated too fast while some areas are heated insufficiently.

[0008] The present invention is studied and proposed in view of the deficiencies of the prior art. Summary of the Invention

[0009] When the existing main injection pipe of the infrared burner outputs gas as mentioned above, due to factors such as its structure and air flow characteristics, the gas rises prematurely, resulting in uneven distribution of gas in the gas chamber. The gas concentration on the side close to the output end of the main injection pipe is relatively high, while the gas concentration on the other side of the gas chamber is relatively low.

[0010] The technical solution adopted by the present invention to solve its technical problems is as follows: An infrared burner, comprising a burner head body. A combustion chamber is provided inside the burner head body. A porous infrared combustion plate is correspondingly arranged at the top of the combustion chamber. A main injection pipe communicating with the combustion chamber is provided on one side of the burner head body. A flow guiding component is arranged inside the combustion chamber. The flow guiding component is located above the output end of the main injection pipe and below the porous infrared combustion plate. The flow guiding component is arranged at an interval from the porous infrared combustion plate. A certain distance is formed between the tail end of the flow guiding component and the side of the combustion chamber away from the main injection pipe to form a gas passing channel. The flow guiding component can limit the rise of the gas on the side of the combustion chamber close to the main injection pipe, and guide the gas on the side of the combustion chamber close to the main injection pipe to flow to the side of the combustion chamber away from the main injection pipe, and guide it to the porous infrared combustion plate through the gas passing channel; The flow guiding component is provided with a gas passing unit, and the gas passing unit can guide the gas located below the flow guiding component to the porous infrared combustion plate.

[0011] An infrared burner as described above, wherein the flow guiding component comprises a flow guiding plate.

[0012] An infrared burner as described above, wherein the flow guiding plate is arranged parallel to the bottom wall of the combustion chamber.

[0013] An infrared burner as described above, wherein the combustion chamber comprises an annular air passage and a flow dividing column, and the flow dividing column is located in the middle area of the annular air passage.

[0014] An infrared burner as described above, wherein the output end of the main injection pipe extends into the annular air passage, and the central axis of the main injection pipe intersects with the center of the flow dividing column.

[0015] An infrared burner as described above, wherein the flow guiding component comprises a flow guiding plate, and the shape of the flow guiding plate is arc-shaped, which comprises a first arc segment and a second arc segment respectively arranged inside both sides of the annular air passage, and the first arc segment and the second arc segment are respectively abutted against the outer wall of the flow dividing column.

[0016] An infrared burner as described above, wherein a first flow disturbing plate bent downward is provided at the tail end of the first arc segment, and a second flow disturbing plate bent downward is provided at the tail end of the second arc segment.

[0017] An infrared burner as described above, an assembly through hole is provided in the shunt column, and a central burner cap assembly is assembled in the assembly through hole. The central burner cap assembly includes a central gas supply channel and a burner cap detachably connected to the top thereof.

[0018] An infrared burner as described above, the burner cap is threadedly connected to the top of the central gas supply channel.

[0019] An infrared burner as described above, the gas passing unit includes a plurality of air holes provided on the diversion assembly; and / or, the gas passing unit includes a gas passing airway formed by a certain distance between the outer wall of the diversion assembly and the inner wall of the combustion chamber.

[0020] The beneficial effects of the present invention are as follows: An infrared burner of the present invention relates to the technical field of cooking utensils. It includes a burner head body. A combustion chamber is provided inside the burner head body. A porous infrared combustion plate is correspondingly arranged at the top of the combustion chamber. A main injection pipe is provided on one side of the burner head body. A diversion assembly is arranged inside the combustion chamber. When the main injection pipe conveys gas into the combustion chamber, the diversion assembly restricts the rise of the gas on the side of the combustion chamber close to the main injection pipe. At the same time, the diversion assembly guides the gas to the side of the combustion chamber away from the main injection pipe; and, the gas guided to the other side of the combustion chamber rises to the porous infrared combustion plate through this gas passing channel; secondly, the gas passing unit provided on the diversion assembly can guide the gas located below the diversion assembly to above the diversion assembly, guiding the relatively concentrated gas below the diversion assembly to the upper space; through the synergistic effect of the diversion assembly and the gas passing unit, the gas can be evenly distributed in the combustion chamber, ensuring the uniform flame output of the porous infrared combustion plate.

[0021] The following will further describe the present invention in conjunction with the drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the infrared burner of Embodiment 1 of the present invention; Figure 2 It is one of the exploded schematic diagrams of the infrared burner of Embodiment 1 of the present invention; Figure 3 It is the other exploded schematic diagram of the infrared burner of Embodiment 1 of the present invention; Figure 4 It is a top view schematic diagram of the infrared burner of Embodiment 1 of the present invention; Figure 5 It is Figure 4 A sectional view along line A-A; Figure 6 It is Figure 4 A sectional view along line B-B (infrared burner of Embodiment 1); Figure 7 Top view schematic diagram of the infrared burner hidden upper cover and the porous infrared combustion plate of Embodiment 1 of the present invention; Figure 8 Third exploded schematic diagram of the infrared burner of Embodiment 1 of the present invention; Figure 9 First exploded schematic diagram of the infrared burner of Embodiment 2 of the present invention; Figure 10 Second exploded schematic diagram of the infrared burner of Embodiment 2 of the present invention; Figure 11 is Figure 4 Cross-sectional schematic diagram along line B-B (infrared burner of Embodiment 2); Figure 12 Top view schematic diagram of the infrared burner hidden upper cover and the porous infrared combustion plate of Embodiment 2 of the present invention; Figure 13 Structural schematic diagram of the flow guide plate of Embodiment 2 of the present invention. Detailed implementation manners

[0023] The following will describe in detail the embodiments of the present invention with reference to the accompanying drawings.

[0024] Embodiment 1: As Figures 1 to 8 shown, an infrared burner of this embodiment includes a burner head body 1. A combustion chamber 3 is provided inside the burner head body 1. A porous infrared combustion plate 4 is correspondingly arranged at the top of the combustion chamber 3. A main injection pipe 11 communicating with the combustion chamber 3 is provided on one side of the burner head body 1. A flow guide assembly 5 is arranged inside the combustion chamber 3. The flow guide assembly 5 is located above the output end of the main injection pipe 11 and below the porous infrared combustion plate 4. The flow guide assembly 5 is arranged at an interval from the porous infrared combustion plate 4. There is a certain distance between the tail end of the flow guide assembly 5 and the side of the combustion chamber 3 away from the main injection pipe 11 to form an air passage 12. When the gas transported by the main injection pipe 11 enters the combustion chamber 3, the flow guide assembly 5 can restrict the rise of the gas on the side of the combustion chamber 3 close to the main injection pipe 11, and guide the gas on the side of the combustion chamber 3 close to the main injection pipe 11 to flow to the side of the combustion chamber 3 away from the main injection pipe 11, and guide it to the porous infrared combustion plate 4 through the air passage 12, so that the gas is evenly distributed in the combustion chamber 3; and, the flow guide assembly 5 is provided with an air passage unit, and the air passage unit can guide the gas located below the flow guide assembly 5 to the porous infrared combustion plate 4, further making the gas evenly distributed in the combustion chamber 3, avoiding the situation that the gas is concentrated on the side of the combustion chamber 3 close to the main injection pipe 11, and ensuring the uniform flameout of the porous infrared combustion plate 4.

[0025] Specifically, when the main ejector tube conveys fuel gas into the combustion chamber, the fuel gas will first reach the side of the combustion chamber close to the main ejector tube. In this embodiment, the flow guiding assembly is located between the output end of the main ejector tube and the porous infrared combustion plate. Its existence restricts the upward movement of the fuel gas on the side of the combustion chamber close to the main ejector tube, just like setting a "barrier" for the fuel gas to prevent it from moving upward prematurely. At the same time, the flow guiding assembly will guide this part of the fuel gas to the side of the combustion chamber far from the main ejector tube, which makes use of the structure and shape of the flow guiding assembly itself, enabling the fuel gas to flow along a specific path.

[0026] Moreover, an air passage is formed between the tail end of the flow guiding assembly and the side of the combustion chamber far from the main ejector tube. The fuel gas guided to the other side of the combustion chamber rises to the porous infrared combustion plate through this air passage. In this way, the fuel gas that was originally likely to concentrate near the main ejector tube can be more evenly distributed at the top of the entire combustion chamber, providing a uniform fuel gas supply for the porous infrared combustion plate.

[0027] Furthermore, the air passage units provided on the flow guiding assembly can guide the fuel gas located below the flow guiding assembly to above the flow guiding assembly, guiding the relatively concentrated fuel gas below the flow guiding assembly to the upper space to fill the possible fuel gas voids here. The guided fuel gas cooperates with the fuel gas rising through the air passage, further enabling the fuel gas to be more evenly distributed in the entire space of the combustion chamber, especially in the area below the porous infrared combustion plate, and finally enabling the fuel gas to reach each part of the porous infrared combustion plate evenly.

[0028] Through the synergistic effect of the flow guiding assembly and the air passage units, the fuel gas can be evenly distributed in the combustion chamber, avoiding the situation where the fuel gas concentrates on the side of the combustion chamber close to the main ejector tube. This enables each area of the porous infrared combustion plate to obtain a uniform fuel gas supply, thus ensuring uniform flame output of the porous infrared combustion plate. Whether it is a household stove, a cartridge stove, or an outdoor cooking utensil and other devices, it can make the object to be heated receive more uniform heat, improving the heating effect and product quality.

[0029] Furthermore, the uniform distribution of the fuel gas means more complete combustion. When the fuel gas burns evenly on the porous infrared combustion plate, it can mix more effectively with oxygen, reducing the occurrence of incomplete combustion, thereby improving the combustion efficiency and reducing energy consumption.

[0030] As Figures 1 to 8 shown, the flow guiding assembly 5 of this embodiment includes a flow guiding plate.

[0031] Specifically, after the gas enters the gas chamber from the main ejector tube, the deflector will change the originally relatively disordered flow path of the gas. Under normal circumstances, when the gas enters the gas chamber, it may directly impact upward, while the deflector will direct the gas in a specific direction. For example, it guides the gas to flow first to the side of the gas chamber away from the main ejector tube, so that the gas can spread more widely in the gas chamber and avoid the gas concentrating in a certain local area.

[0032] Specifically, the deflector can form a constraint on the gas, enabling the gas to form a relatively stable air flow around it. The stable air flow helps the gas to mix better with the air because in a stable flow state, the gas and air have more sufficient time and space to come into contact and mix, thereby providing a better quality gas mixture for the subsequent combustion process and achieving more complete combustion.

[0033] Furthermore, since the deflector makes the gas evenly distributed, the gas can be ejected and burned more evenly when passing through the combustion component, so that the firepower of the burner is more uniform. And the stable air flow and uniform pressure distribution make the combustion process more stable, reducing the occurrence of unstable phenomena such as flame flickering and flameout.

[0034] As Figures 1 to 8 shown, the deflector of this embodiment is arranged parallel to the bottom wall of the combustion chamber 3.

[0035] When the deflector is arranged parallel to the bottom wall of the combustion chamber, the gas entering the combustion chamber from the main ejector tube will flow horizontally under the guidance of the deflector. Due to the parallel structure, the gas will not generate additional upward or downward component forces due to the inclination of the deflector, so that it can spread more smoothly to the side of the combustion chamber away from the main ejector tube, forming a relatively uniform horizontal distribution at the bottom of the combustion chamber.

[0036] During the horizontal flow of the gas, a relatively stable gas flow layer will be formed between the deflector and the bottom wall of the combustion chamber. This gas flow layer will form a layered effect with the air or gas in the upper space, which is conducive to the gas and air mixing more orderly in the subsequent mixing process. As the gas flows horizontally, the subsequently entering gas will continuously replenish, further maintaining this layered flow state.

[0037] Moreover, the parallel deflector plays a certain role in hindering the upward flow of the gas. It makes the gas not rise too quickly to the upper part of the combustion chamber, but after fully spreading and mixing at the bottom, it then rises to below the porous infrared combustion plate at a relatively uniform speed through the gas passage or other means, so as to ensure that the gas has a good mixing state and uniform distribution when reaching the combustion plate.

[0038] By guiding the horizontal flow of the gas and controlling the rising speed, the gas can be more widely diffused at the bottom of the combustion chamber, avoiding the concentration of the gas near the main ejector tube or in a certain local area. This makes the distribution of the gas more uniform at the entire bottom of the combustion chamber. Then, when rising to the porous infrared combustion plate, more uniform combustion can be achieved, improving the flame uniformity of the burner.

[0039] Since the gas has more sufficient time to mix with air at the bottom of the combustion chamber and can reach the combustion plate evenly, the contact between the gas and oxygen is more sufficient, thereby achieving more complete combustion. This improves the energy utilization efficiency, reduces the waste of gas, and lowers the operating cost.

[0040] The stable stratified flow and uniform gas distribution contribute to maintaining the stability of the combustion process, reducing problems such as flame pulsation and discontinuous combustion caused by uneven gas distribution, enabling the burner to work continuously and stably, and improving the reliability and safety of the equipment.

[0041] In some other embodiments, the deflector is inclined with respect to the bottom wall of the combustion chamber 3. The gas entering the combustion chamber from the main ejector tube will flow in a specific direction under the guidance of the deflector. If the deflector is inclined downward away from the main ejector tube, the gas will accelerate and diffuse further away from the main ejector tube at the bottom of the combustion chamber under the action of gravity and the guiding effect of the deflector; if the deflector is inclined upward, it will guide the gas to flow upward faster, changing the original natural diffusion path of the gas in the combustion chamber.

[0042] Preferably, the inclined deflector will cause disturbances during the gas flow. When the gas flows along the inclined surface, a relative velocity difference will be formed with the surrounding air, thereby triggering turbulence. This turbulence can enhance the mixing effect between the gas and air, enabling the gas and air to be fully mixed in a shorter time, creating better conditions for subsequent combustion.

[0043] By means of the inclined deflector, the time and concentration of the gas reaching different regions of the combustion chamber can be controlled. For example, by inclining the deflector so that the gas flows more to the edge region of the combustion chamber, the combustion area can be expanded, making the combustion in the entire combustion chamber more uniform and avoiding local overheating or incomplete combustion.

[0044] Since the inclined deflector promotes the full mixing of the gas and air, the combustion reaction can proceed more completely. More gas molecules can come into full contact with oxygen molecules and react, releasing more energy, thereby improving the thermal efficiency of the burner and reducing energy consumption.

[0045] Preferably, according to the actual usage requirements, the inclination angle and direction of the deflector can be adjusted to flexibly change the distribution of the gas in the combustion chamber, and then adjust the combustion area.

[0046] You can choose the appropriate design according to actual needs.

[0047] like Figures 1 to 8 As shown, the combustion chamber 3 of the present embodiment includes an annular gas channel 31 and a diverter column 32, wherein the diverter column 32 is located in the middle area of the annular gas channel 31. When the gas transported by the main injector pipe 11 enters the annular gas channel 31 and flows to the diverter column 32 located in the middle area of the annular gas channel 31, the diverter column plays a role of blocking and diverting. When the gas passes through the diverter column 32, it will flow to both sides thereof, and the guide plate guides these dispersed gas flows, so that the gas can maintain a relatively stable flow direction and speed distribution in the process of flowing along the annular gas channel 31, which avoids local turbulence, backflow or aggregation of the gas in the annular gas channel, so that the gas can circulate in the annular gas channel 31 in a relatively orderly manner, and finally realize the uniform distribution of the gas in the entire annular gas channel 31. Because the annular gas channel 31 is a part of the combustion chamber 3, when the gas is evenly distributed in the annular gas channel 31, the uniform distribution in the combustion chamber 3 is also achieved.

[0048] Specifically, the structure of the annular air duct 31 allows the gas to circulate therein, increasing the contact time and contact area between the gas and the air, which enables the gas and air to be mixed more fully, creating good conditions for the subsequent combustion process and making the combustion more complete, thereby improving combustion efficiency and reducing energy waste.

[0049] The shape of the annular gas passage 31 helps to form a stable combustion flame. The gas circulates continuously in the annular gas passage, and the flame can be maintained in this relatively stable space, avoiding unstable phenomena such as flickering and extinguishing of the flame, thereby ensuring the reliability and safety of the combustion process.

[0050] The annular structure can provide a larger airflow channel in a limited space. Compared with straight or other shaped air ducts, the annular air duct can be arranged more compactly in the equipment, saving space and making the structure of the entire combustion chamber more compact, which is conducive to the miniaturization design of the equipment.

[0051] The ring itself is a structure with relatively superior mechanical properties. When subjected to internal pressure and external loads, the ring-shaped airway can disperse stress more evenly and reduce local stress concentration, thereby improving the structural strength and stability of the airway and reducing the risk of deformation or damage to the airway.

[0052] When the gas flows in the annular gas duct, the heat can be distributed more evenly in the annular space, which helps to avoid the problem of local overheating in the combustion chamber, makes the temperature field of the entire combustion chamber more uniform, improves the thermal stability of the combustion chamber, and also reduces the damage to equipment components caused by local high temperature, thereby extending the service life of the equipment.

[0053] Furthermore, the smooth curve shape of the annular air duct can keep the fuel gas in a relatively smooth streamline during the flow process, reduce the vortex and turbulent flow phenomena during the flow process, thereby reducing the flow resistance. This means that less energy consumption is required for the fuel gas to flow in the air duct, improving the fluid delivery efficiency of the entire system.

[0054] As Figures 1 to 8 shown, the output end of the main ejector tube 11 of this embodiment extends into the annular air duct 31, and the central axis of the main ejector tube 11 intersects the center of the shunt column 32, so as to shorten the length of the main ejector tube 11, facilitate the assembly of the infrared burner, with high adaptability, and can also avoid the situation where the too long main ejector tube 11 hinders the fuel gas distribution in the fuel gas chamber.

[0055] Specifically, when the fuel gas flows into the main ejector tube 11, due to the certain flow rate of the fuel gas, according to Bernoulli's principle, a low-pressure area will be formed at the outlet of the main ejector tube 11. This low-pressure area will attract the surrounding air to enter and mix with the fuel gas to form combustible fuel gas.

[0056] The output end of the main ejector tube 11 extends into the annular air duct 31, and the central axis intersects the center of the shunt column 32. When the fuel gas is output from the main ejector tube 11 to the annular air duct 31, the shunt column 32 will shunt the fuel gas, and the fuel gas will evenly diffuse around along the annular air duct 31, making the fuel gas more evenly distributed in the annular air duct 31.

[0057] This design avoids the situation of too long main ejector tube 11, makes the length of the main ejector tube 11 more reasonable, and the shorter main ejector tube 11 occupies less space. During the assembly process of the infrared burner, it is easier to install and position, reducing the assembly difficulty and improving the assembly efficiency; and it can better match and combine with other components of the infrared burner. Since the position and length of the main ejector tube 11 are optimized, it can closely cooperate with components such as the annular air duct 31 and the shunt column 32, making the structure of the entire burner more compact and reasonable, and improving the overall adaptability and stability of the burner.

[0058] Furthermore, the too long main ejector tube 11 may form an obstacle in the fuel gas chamber, affecting the normal distribution of the fuel gas, resulting in uneven distribution of the fuel gas in the fuel gas chamber. Reasonably arranging the output end of the main ejector tube 11 in the annular air duct 31 can avoid this obstructive situation, enabling the fuel gas to enter the annular air duct 31 more smoothly and being evenly distributed in the combustion area under the action of the shunt column 32, providing more uniform fuel gas for combustion, thereby improving the combustion efficiency and stability.

[0059] As Figures 1 to 8As shown, an assembly part is provided at the top of the output end of the main ejector tube 11 of this embodiment. The assembly part is provided with a first mounting hole 13, and the flow guiding assembly 5 is provided with a second mounting hole 53 corresponding to the first mounting hole 13. The corresponding relationship between these two holes is the basis for accurately connecting the main ejector tube 11 and the flow guiding assembly 5. During the assembly process, by aligning the two holes, the relative positions of the main ejector tube 11 and the flow guiding assembly 5 can be quickly determined, ensuring their correct layout in space.

[0060] After the first mounting hole 13 and the second mounting hole 53 are aligned, connecting parts such as bolts and screws can be used to pass through these two holes to firmly connect the main ejector tube 11 and the flow guiding assembly 5 together. This mechanical connection method utilizes the frictional force and fastening force between the connecting part and the hole wall to ensure that the main ejector tube 11 and the flow guiding assembly 5 will not undergo relative displacement or loosening during the working process.

[0061] Specifically, the settings of the first mounting hole 13 and the second mounting hole 53 provide a clear positioning reference for the assembly work. Workers do not need to spend a lot of time adjusting the positions of the main ejector tube 11 and the flow guiding assembly 5 during assembly. They only need to align the two holes and install the connecting parts, which greatly shortens the assembly time and improves the production efficiency.

[0062] This design makes the assembly process simpler and more intuitive. Even inexperienced workers can easily complete the connection of the main ejector tube 11 and the flow guiding assembly 5 according to the specified steps, reducing the requirements for the skill level of workers.

[0063] The main ejector tube 11 and the flow guiding assembly 5 are firmly connected through the connecting parts, enhancing the stability of the entire burner structure. During the working process of the burner, it can withstand the pressure and vibration generated by the gas flow and combustion, reducing the probability of failures caused by component loosening and improving the reliability and service life of the equipment.

[0064] When the burner needs to be maintained or components need to be replaced, due to the connection method through the mounting holes, only the connecting parts need to be disassembled to easily separate the main ejector tube 11 and the flow guiding assembly 5, facilitating the inspection, cleaning or replacement of each component, and reducing the maintenance cost and difficulty.

[0065] As Figures 1 to 8 shown, the shape of the flow guiding plate of this embodiment is arc-shaped, which includes a first arc segment 54 and a second arc segment 55 respectively arranged on both sides inside the annular air duct 31, and the first arc segment 54 and the second arc segment 55 are respectively abutted against the outer wall of the flow dividing column 32.

[0066] Specifically, in the annular air passage 31, the fuel-air gas mixture usually flows at a certain velocity and in a certain direction. Due to the characteristics of the annular structure, the airflow in the annular air passage will present a non-uniform distribution state, and there may be differences in the airflow velocity and pressure near the inner wall and the outer wall.

[0067] When using the arc-shaped flow guide plate, its first arc segment 54 and second arc segment 55 are respectively arranged on both sides inside the annular air passage 31. When the fuel gas mixture enters the annular air passage 31, the arc-shaped flow guide plate can guide the airflow to flow along its arc surface. According to the principle of fluid mechanics, the arc surface can change the direction and velocity distribution of the airflow, making the airflow more evenly distributed across the cross-section of the annular air passage 31.

[0068] Moreover, the first arc segment 54 and the second arc segment 55 respectively abut against the outer wall of the flow dividing column 32. The flow dividing column 32 plays a role in further dividing and stabilizing the airflow. The flow guide plate guides the airflow to the vicinity of the flow dividing column 32, and the flow dividing column 32 will divide and adjust the airflow again, enabling the fuel gas mixture to flow more orderly towards the combustion area.

[0069] In the annular air passage 31, the pressure of the airflow will change during the flowing process. The presence of the arc-shaped flow guide plate can change the flow path and velocity of the airflow, thereby affecting the pressure distribution of the airflow.

[0070] Through the cooperation of the first arc segment 54 and the second arc segment 55 with the flow dividing column 32, a relatively stable pressure field can be formed inside the annular air passage 31. When the airflow encounters the arc-shaped flow guide plate and the flow dividing column 32, local pressure changes will occur, and these changes interact with each other, ultimately making the pressure inside the annular air passage 31 more uniform, avoiding the situation of too high or too low local pressure, and ensuring the stable flow of the airflow.

[0071] The uniform airflow distribution makes the fuel-air mixing more sufficient, and can ensure that there is an appropriate mixing ratio at each position in the combustion area. This helps to improve the completeness of combustion, enables more fuel gas to participate in the combustion reaction, thereby improving the combustion efficiency of the infrared burner and reducing energy waste.

[0072] Furthermore, the first arc segment 54 and the second arc segment 55 respectively abut against the outer wall of the flow dividing column 32. This design increases the contact area and connection stability between the flow guide plate and the flow dividing column 32. During the operation of the burner, it can withstand the impact and vibration of the airflow, reduce the relative displacement and looseness between components, and extend the service life of the burner.

[0073] Moreover, the cooperation of the arc-shaped flow guide plate with the annular air passage 31 and the flow dividing column 32 makes the structure of the entire burner more compact and reasonable. This optimized structural layout is not only beneficial to the flow of the airflow, but also convenient for the installation and maintenance of the burner.

[0074] As Figures 1 to 8 shown, the flow guide plate of this embodiment further includes an assembly section 56. The first arc section 54 and the second arc section 55 are respectively located on both sides of the assembly section 56. One end of the assembly section 56 abuts against the inner wall of the combustion chamber 3, and the other end of the assembly section 56 abuts against the flow dividing column 32.

[0075] The assembly section 56 abuts against the inner wall of the combustion chamber 3 and the flow dividing column 32 respectively, increasing the connection strength between the flow guide plate and the combustion chamber 3 and the flow dividing column 32. This tight connection can effectively resist the vibration and impact force generated during the combustion process, reduce the looseness and wear between components, and extend the service life of the burner.

[0076] Moreover, the design of the assembly section 56 enables the flow guide plate, the combustion chamber 3 and the flow dividing column 32 to form an integral structural system. This optimized structural layout not only facilitates the flow of air, but also makes the internal structure of the burner more compact, saves space, and is convenient for the installation and maintenance of the burner.

[0077] As Figures 1 to 8 shown, an assembly through hole 321 is provided in the flow dividing column 32 of this embodiment. The assembly through hole 321 is equipped with a central burner cap assembly 2. The central burner cap assembly 2 includes a central gas supply channel 21 and a burner cap 22 detachably connected to the top thereof.

[0078] Specifically, the central gas supply channel 21 serves as a gas transmission channel, delivering gas from the gas supply source to the burner cap 22. When the gas enters the central gas supply channel 21, it will flow upward along the channel to provide fuel for combustion.

[0079] The burner cap 22 is detachably connected to the top of the central gas supply channel 21, facilitating the replacement and maintenance of the burner cap 22. When the burner cap 22 is blocked, damaged, etc., it can be disassembled for cleaning or replacement without affecting the normal use of the central gas supply channel 21 and other components.

[0080] Preferably, the cooperation between the central burner cap assembly 2 and the surrounding annular air duct 31 can achieve multiple combustion modes. The flame generated by the central burner cap 22 can complement the flame at the porous infrared combustion plate 4 to fill the flame in the middle area of the porous infrared combustion plate 4, forming a more powerful and more uniform combustion area. This helps to improve the combustion efficiency, enable the gas to burn more fully, and reduce energy waste.

[0081] As Figures 1 to 8As shown, the fire cover 22 of this embodiment is connected to the top of the central gas supply channel 21 by threads, and threaded connection is a common and reliable mechanical connection method. When the fire cover 22 is connected to the top of the central gas supply channel 21 by threads, the mutual engagement between the threads forms a tight fit. During the gas supply process, the gas will flow from the central gas supply channel 21 to the fire cover 22 at a certain pressure. This pressure will impact the fire cover 22, and the friction and locking force of the threaded connection can resist the impact of the gas, ensuring that the fire cover 22 and the central gas supply channel 21 maintain a relatively fixed position, preventing the fire cover 22 from deflecting.

[0082] The threaded connection can also play a certain sealing role. When the fire cover 22 is tightly connected to the central gas supply channel 21, the possibility of gas leakage is reduced. At the same time, this tight connection helps to maintain the stable pressure of the gas in the channel, so that the gas can be evenly ejected from each fire hole of the fire cover 22, providing good conditions for stable combustion.

[0083] Since the fire cover 22 is fixed on the top of the central air supply channel 21 and will not deviate, the gas can be ejected from the fire outlet of the fire cover 22 according to the designed path and method, which can ensure that the gas is evenly distributed around the fire cover 22 and fully mixed with the air. When the gas-air mixture is ignited, a stable and uniform flame can be formed, thereby improving the combustion efficiency.

[0084] The stability of the position of the fire cover 22 avoids airflow disturbance caused by deviation. If the fire cover 22 deviates, the ejection direction and speed of the gas will change, causing instability and disturbance of the airflow. The threaded connection ensures the accuracy of the position of the fire cover 22, reduces airflow disturbance, and makes the combustion process more stable.

[0085] During the combustion process, the instability of the airflow will cause the vibration of the burner components, thereby generating noise. The fire cover 22 is fixed by threaded connection to ensure the stable spraying of the gas and the smooth flow of the airflow, thereby reducing the vibration caused by the airflow disturbance and the noise generated during the combustion process.

[0086] like Figures 1 to 8 As shown, the air passing unit of this embodiment includes a plurality of air holes 51 arranged on the guide component 5; and / or, the air passing unit includes an air passing air channel 52 formed with a certain distance between the outer wall of the guide component 5 and the inner wall of the combustion chamber 3, so as to supplement the gas in the space above the guide component 5 through the air passing unit, so as to further ensure that the gas can be evenly distributed in the gas chamber.

[0087] In the combustion chamber, due to the progress of the combustion reaction, the gas in the space above the diversion assembly is continuously consumed, resulting in a relatively low pressure in this area. The air holes on the diversion assembly connect the upper and lower spaces of the diversion assembly. According to the principle that fluid flows from a high-pressure area to a low-pressure area, the gas will enter the space above the diversion assembly through the air holes under the action of the pressure difference.

[0088] Multiple air holes are evenly distributed on the diversion assembly, enabling the gas to enter the upper space simultaneously from multiple positions. This dispersed replenishment method helps the gas to be more evenly distributed in this space, avoiding the situation of too high or too low local gas concentration.

[0089] Preferably, multiple said air holes can be arranged in a single-row array, double-row array or multi-row array along the circumference of the diversion plate, or can also be arranged in regular arrangements such as annular array, U-shaped array, etc., or can be arranged randomly, and a suitable design can be selected according to actual needs.

[0090] Furthermore, after the gas enters the combustion chamber, a part of it will flow upward through the said air holes 51 and / or the gas passage 52 because the gas has a certain pressure and flow rate when entering the combustion chamber, and the gas passage 52 provides an additional flow path for the gas.

[0091] The gas rising through the said gas passage 52 will be mixed with the gas that sequentially enters the space above the diversion assembly from the annular air passage 31 and the gas passage 12. This mixing process further promotes the uniform distribution of the gas in the entire gas chamber, enabling the gas to come into contact with air more fully and creating good conditions for the subsequent combustion reaction.

[0092] A suitable gas passage unit method can be selected according to actual needs, which will not be elaborated here.

[0093] As Figures 1 to 8 shown, the inner wall of the combustion chamber 3 of this embodiment is provided with a guiding inclined surface 12 that gradually inclines away from the center of the combustion chamber 3 from top to bottom. The guiding inclined surface 12 is located below the diversion assembly 5, and the guiding inclined surface 12 can guide the gas to the air holes 51 and / or the gas passage 52.

[0094] When the gas enters the combustion chamber, since the gas will flow to both sides when passing through the flow dividing column 32, most of the gas will flow to both sides of the annular air passage 31, and a small part of the gas will flow to the inner wall of the combustion chamber 3 and flow to the guiding inclined surface. After the gas contacts the guiding inclined surface, its flow direction will be guided by the inclined surface. According to the principle of fluid mechanics, when a fluid encounters an inclined surface, it will change its flow path along the inclined direction of the surface. Therefore, the gas will flow along the inclined direction of the guiding inclined surface towards the air holes 51 and / or the gas passage 52 to replenish the gas in the space above the diversion assembly 5.

[0095] Preferably, under the action of the guiding inclined plane, when the gas flows on the inclined plane, due to the gradually decreasing space, the pressure will gradually increase. This pressure change promotes the gas to flow more smoothly into the air holes 51 and / or the air passing air channels 52.

[0096] The guiding inclined plane can accurately guide the gas to the air holes 51 and / or the air passing air channels 52, avoiding the disordered flow and diffusion of the gas in the combustion chamber. This enables more gas to effectively enter the air holes 51 and / or the air passing air channels 52, and then supplement the space above the diversion assembly, improving the gas transportation efficiency and ensuring that there is sufficient gas to participate in the combustion reaction.

[0097] Under the guidance of the guiding inclined plane, the gas can reach the target position more directly, reducing the energy loss during the flow process.

[0098] As Figures 1 to 8 shown, the number of the guiding inclined planes 12 in this embodiment is two, and they are respectively arranged on both sides of the main injection pipe 11.

[0099] Specifically, when the guiding inclined planes are arranged on both sides of the main injection pipe, the gas ejected from the main injection pipe will diffuse in the combustion chamber space, and the guiding inclined planes on both sides will respectively guide the diffused gas. Compared with a single inclined plane, the two guiding inclined planes increase the guiding area for the gas, and more gas can come into contact with the guiding inclined planes and be guided, thereby improving the efficiency of guiding the gas to the air holes 51 and / or the air passing air channels 52.

[0100] Embodiment 2: As Figures 9 to 13 shown, the difference between this embodiment and Embodiment 1 is that the tail end of the first arc segment 54 of this embodiment is provided with a first spoiler 541 bent downward, and the tail end of the second arc segment 55 is provided with a second spoiler 551 bent downward.

[0101] When the gas flows in the annular air channel, it will be guided by the first arc segment and the second arc segment, changing the originally possibly disordered flow direction, enabling the gas to flow more orderly along the arc trajectory, converging or diverging to specific areas of the annular air channel, and preliminarily adjusting the distribution of the gas.

[0102] When the gas flows through the arc section to the end, the first spoiler and the second spoiler start to take effect. In normal air flow, a relatively stable laminar flow state will be formed, while the downward-bent first spoiler and second spoiler will disrupt this laminar flow state. When the gas flows to the spoiler, the spoiler will block the flow of a part of the gas, causing the gas to generate vortices and turbulence. These vortices and turbulence will mix with the surrounding gas. Under this mixing effect, the gas can be more fully diffused and exchanged, thus achieving the uniform distribution of the gas.

[0103] Specifically, in fluid mechanics, when the gas flows in the annular air duct, the gas near the wall will form a relatively stable laminar boundary layer. The gas velocity in this laminar boundary layer is relatively low, and the mixing degree with the surrounding gas is poor. The downward-bent structure of the first spoiler and the second spoiler can directly insert into the laminar boundary layer. When the gas flows to the spoiler, the spoiler will hinder the normal flow of the gas, causing the originally stable laminar boundary layer to be disrupted. The gas in the disrupted laminar boundary layer will interact with the surrounding air flow to form a turbulent region.

[0104] The presence of the spoiler changes the flow direction and velocity distribution of the gas. When the gas bypasses the spoiler, a low-pressure area will be formed behind the spoiler, and the surrounding gas will quickly fill this low-pressure area, thus generating vortices. These vortices will continuously collide and mix with the surrounding gas, further intensifying the turbulence degree of the gas. As the gas continues to flow, these vortices and turbulence will gradually spread to a larger area, making the gas mixing in the entire flow field more sufficient.

[0105] By generating vortices and turbulence, the first spoiler and the second spoiler enable the gas to contact the air more fully. The larger the contact area between the gas and the air, the easier the combustion reaction will be, and the reaction speed will also increase. This means that more gas can react with oxygen in a short time, releasing more energy, thus improving the combustion efficiency.

[0106] Through the action of the deflector and the spoiler, the gas distribution becomes more uniform, so that the gas can contact and mix with the surrounding air more fully. Uniform mixing can ensure that the gas in each local area can burn under the appropriate air ratio, thus making the combustion reaction more complete, releasing more energy, and improving the combustion efficiency.

[0107] Such as Figures 9 to 13As shown in the figure, at least one first ventilation hole 542 is provided on the first spoiler 541 of this embodiment, and at least one second ventilation hole 552 is provided on the second spoiler 551. When the gas flows in the annular air passage and encounters the first spoiler 541 and the second spoiler 551, part of the gas will pass through the first ventilation hole 542 and the second ventilation hole 552. These ventilation holes play a role in shunting, dispersing the gas that originally concentrated on impacting the spoiler. During the process of the gas passing through the ventilation holes, the flow velocity of the gas will change, and the pressure will also be reduced to a certain extent. This shunting and pressure reduction effect can prevent the formation of a high-pressure area in front of the spoiler due to excessive gas accumulation, enabling the gas to flow around the spoiler more smoothly.

[0108] The gas passing through the ventilation holes will form a cross-flow with the gas behind the spoiler. At the outlet of the ventilation hole, the gas flowing out at a high speed will produce a strong shearing effect with the surrounding gas, thereby forming small-scale vortices and turbulence. These small-scale vortices and turbulence will further promote the mixing of the gas. The uneven gas concentration that may exist in front of the spoiler is improved through the secondary mixing effect of the ventilation holes, making the distribution of the gas in the entire flow field more uniform.

[0109] Preferably, the ventilation holes at different positions can guide the gas to flow in different directions, thereby adjusting the air flow distribution in the entire annular air passage; for example, setting more or larger ventilation holes in a specific area of the spoiler can make more gas flow to this area to balance the gas flow rate and pressure in different areas, ensuring the uniform and stable air flow in the entire annular air passage.

[0110] Preferably, the secondary mixing effect brought by the ventilation holes makes the mixing of the gas and air more sufficient. A more uniform mixing means that the gas molecules and oxygen molecules can contact more frequently, thereby increasing the rate and completeness of the combustion reaction. More gas can burn fully in the combustion chamber, releasing more energy, and thus improving the combustion efficiency.

[0111] Since the ventilation holes adjust the air flow distribution, the temperature field and concentration field in the combustion chamber become more uniform. This uniform environment is conducive to the stable progress of the combustion reaction, avoiding the situation of incomplete combustion or over-combustion in local areas, and further improving the combustion efficiency.

[0112] The shunting and pressure reduction effects reduce the pressure in front of the spoiler and the impact force borne by the spoiler. This can not only extend the service life of the spoiler, but also reduce the vibration and damage caused by excessive force on the spoiler, reducing the equipment maintenance cost and failure risk.

[0113] By adjusting the air flow distribution, the ventilation holes make the flow of the fuel gas in the annular air passage more stable, reducing the impact and wear of the air flow on the air passage wall. This helps to protect the air passage structure and improve the reliability and stability of the entire combustion device.

[0114] Preferably, as Figures 9 to 13 shown, at least one third ventilation hole 543 is provided at the connection between the first arc segment 54 and the first spoiler 541 of this embodiment, and at least one fourth ventilation hole 553 is provided at the connection between the second arc segment 55 and the second spoiler 551.

[0115] Specifically, when the air flow passes through the connection between the arc segment and the spoiler, due to the change in the flow direction and the blockage of the spoiler, a certain low-pressure area will be formed in this area. The existence of the third ventilation hole 543 and the fourth ventilation hole 553 allows part of the fuel gas to supplement the low-pressure area from the inside of the arc segment through these ventilation holes. This can not only balance the pressure in this area, but also guide the air flow to flow in the designed direction, avoiding the phenomena of air flow disorder and backflow.

[0116] The fuel gas flowing out from the third ventilation hole 543 and the fourth ventilation hole 553 will form a strong mixture with the mainstream fuel gas near the connection. Due to the special position of the ventilation holes, the mixture here can strengthen the key area where air flow unevenness is likely to occur at the connection between the arc segment and the spoiler. Through this local mixture, the possible differences in fuel gas concentration and velocity in this area are improved, making the fuel gas distribution more uniform across the cross-section of the entire annular air passage.

[0117] When the fuel gas passes through the third ventilation hole 543 and the fourth ventilation hole 553, its flow rate and pressure will change. According to Bernoulli's principle, the aperture and shape design of the ventilation holes can control the flow rate and energy of the fuel gas flowing out. Appropriate adjustment of the flow rate and energy can affect the flow characteristics of the mainstream fuel gas, such as increasing the turbulence degree of the mainstream fuel gas, thereby further promoting the mixture of the fuel gas and air and improving the combustion efficiency.

[0118] By strengthening the local mixture and adjusting the air flow energy, the mixture of the fuel gas and air in the combustion chamber becomes more sufficient. A more uniform mixture state is conducive to the full contact between fuel gas molecules and oxygen molecules, thereby accelerating the speed of the combustion reaction, enabling more fuel gas to be completely burned in the combustion chamber, releasing more energy, and thus improving the combustion efficiency.

[0119] Preferably, the first arc segment 54 and the first spoiler 541 are arranged perpendicular to each other, and the second arc segment 55 and the second spoiler 55 are arranged perpendicular to each other.

[0120] Since the spoiler is perpendicular to the arc section, when the air flow encounters the spoiler, it will be forced to change its flow direction, from the original direction along the arc section to spreading to both sides or other directions. This turning and spreading increase the turbulence degree of the air flow, enabling better mixing of the fuel gas and air.

[0121] The vertically arranged spoiler will form a unique pressure distribution around it. On the windward side of the spoiler, the air flow is blocked and the pressure rises; while on the leeward side, a low-pressure area is formed by the air flow. This pressure difference will prompt the air flow to form a complex flow pattern around the arc section and the spoiler, further enhancing the mixing effect of the air flow. At the same time, the adjustment of this pressure distribution also helps to balance the pressure in the entire annular air duct, enabling the air flow to flow more stably.

[0122] When the air flow flows along the arc section, a boundary layer will be formed on the wall surface. The vertically arranged spoiler can break the boundary layer at an appropriate position, causing it to separate in advance. After the boundary layer separates, the air flow will form vortices and turbulence, increasing the contact area and mixing opportunity between the fuel gas and air. By controlling the separation position and degree of the boundary layer, the mixing effect and flow characteristics of the air flow can be optimized.

[0123] The vertically arranged spoiler significantly increases the turbulence intensity of the air flow, enabling the fuel gas and air to be fully stirred and mixed in the annular air duct. Turbulence can break the laminar state of the fuel gas and air, promoting the diffusion and exchange between molecules, thus making the mixing more uniform. More uniform mixing is beneficial to improving the combustion efficiency, enabling the fuel gas to react more fully with oxygen and release more energy.

[0124] After the air flow encounters the spoiler, it spreads in different directions, increasing the contact area between the fuel gas and air. A larger contact area means that more fuel gas molecules and oxygen molecules can collide with each other, increasing the rate and completeness of the combustion reaction.

[0125] The design in which the first arc section is perpendicular to the first spoiler and the second arc section is perpendicular to the second spoiler is relatively simple and easy to manufacture and install. This simple structure can reduce the manufacturing cost and installation difficulty of the equipment.

[0126] The vertically arranged structure makes the surfaces of the spoiler and the arc section easy to clean and overhaul. After the equipment has been running for some time, the staff can conveniently inspect and maintain these components to ensure the normal operation of the equipment.

[0127] In some other embodiments, the spoiler and the arc section are at a certain inclination angle. When the air flow flowing along the arc section encounters the inclined spoiler, the air flow will generate an oblique flow component under the guidance of the spoiler, which not only increases the turbulence degree of the air flow, but also enables the air flow to deviate in a specific direction, thereby achieving fine control of the air flow mixing and flow direction.

[0128] The inclined setting can flexibly adjust the mixing effect and flow direction of the air flow. At the same time, the inclined setting may reduce the resistance of the spoiler to the air flow and reduce energy loss.

[0129] Alternatively, the spoiler itself is designed in a curved shape. The curved spoiler can cooperate with the arc section to form a more complex air flow channel.

[0130] The curved spoiler can enable the air flow to flow along its curved surface, generating a more complex flow pattern. The air flow will be affected by centrifugal force and pressure gradient on the curved surface, thereby increasing the turbulence degree and mixing effect of the air flow.

[0131] Adopting such a design can achieve efficient air flow mixing in a smaller space. The curved spoiler can more effectively guide the air flow, reduce the dead corners and recirculation areas of the air flow, and improve the mixing efficiency.

[0132] The appropriate design can be selected according to actual requirements.

[0133] The above only further illustrates the technical content of the present invention with examples to make it easier for readers to understand, but it does not mean that the implementation modes of the present invention are limited to this. Any technical extension or re-creation based on the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. An infrared burner, characterized in that: It includes a burner body (1), within which there is a combustion chamber (3). A porous infrared combustion plate (4) is correspondingly arranged at the top of the combustion chamber (3). A main injection pipe (11) communicating with the combustion chamber (3) is provided on one side of the burner body (1). A flow guiding assembly (5) is arranged within the combustion chamber (3). The flow guiding assembly (5) is located above the output end of the main injection pipe (11) and below the porous infrared combustion plate (4). The flow guiding assembly (5) is spaced apart from the porous infrared combustion plate (4). There is a certain distance between the tail end of the flow guiding assembly (5) and the side of the combustion chamber (3) away from the main injection pipe (11) to form an air passing channel (12). The flow guiding assembly (5) can restrict the upward movement of the gas on the side of the combustion chamber (3) close to the main injection pipe (11), and guide the gas on the side of the combustion chamber (3) close to the main injection pipe (11) to flow towards the side of the combustion chamber (3) away from the main injection pipe (11), and guide it to the porous infrared combustion plate (4) through the air passing channel (12). The flow guiding assembly (5) is provided with an air passing unit, and the air passing unit can guide the gas located below the flow guiding assembly (5) to the porous infrared combustion plate (4).

2. The infrared burner according to claim 1, wherein: The flow guiding assembly (5) includes a flow guiding plate (50).

3. The infrared burner according to claim 2, characterized in that: The flow guiding plate (50) is arranged parallel to the bottom wall of the combustion chamber (3).

4. An infrared burner according to claim 1, characterized in that: The combustion chamber (3) includes an annular air passage (31) and a flow dividing column (32). The flow dividing column (32) is located in the middle area of the annular air passage (31).

5. The infrared burner according to claim 4, characterized in that: The output end of the main injection pipe (11) extends into the annular air passage (31), and the central axis of the main injection pipe (11) intersects with the center of the flow dividing column (32).

6. The infrared burner according to claim 4, wherein: The flow guiding assembly (5) includes a flow guiding plate (50). The shape of the flow guiding plate (50) is arc-shaped, which includes a first arc segment (54) and a second arc segment (55) respectively arranged on both sides inside the annular air passage (31), and the first arc segment (54) and the second arc segment (55) are respectively in contact with the outer wall of the flow dividing column (32).

7. An infrared burner according to claim 6, characterized in that: A first spoiler (541) bent downward is provided at the tail end of the first arc segment (54), and a second spoiler (551) bent downward is provided at the tail end of the second arc segment (55).

8. The infrared burner according to claim 4, characterized in that: An assembly through hole (321) is arranged within the flow dividing column (32). A central burner cap assembly (2) is assembled in the assembly through hole (321). The central burner cap assembly (2) includes a central gas supply channel (21) and a burner cap (22) detachably connected to the top thereof.

9. The infrared burner according to claim 8, wherein: The burner cap (22) is threadedly connected to the top of the central gas supply channel (21).

10. The infrared burner according to claim 1, wherein: The air passing unit includes a plurality of air holes (51) provided on the flow guiding assembly (5); and / or, the air passing unit includes an air passing airway (52) formed by having a certain distance between the outer wall of the flow guiding assembly (5) and the inner wall of the combustion chamber (3).

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