A full premix low-nitrogen intelligent burner

Abstract

The present application relates to the field of combustion equipment, disclose a kind of full premixing low nitrogen intelligent combustor, including end combustion mechanism is located on the gathering bucket pipe, for forming the ignition end structure of multiple pass output;Low nitrogen output mechanism is located on the front volute, cooperate static guide disc, combustion end pipe and gas end for the nitrogen gas required for combustion mixing;Reciprocating mixing mechanism is located on the front volute, cooperate static guide disc for the oxygen-rich gas required for intermittent delivery gas fuel combustion. Through the mechanical linkage of reciprocating mixing mechanism and one-way control mechanism, the high-frequency pulse type precision pumping of oxygen-rich gas is realized, in the operation of equipment, the continuous circumferential motion of rotating cam is smoothly and accurately converted into the linear reciprocating displacement of piston push rod by traction connecting rod, and the stroke trajectory of the entire mechanical transmission chain is smoothly and non-interferingly developed.

Description

Technical Field

[0001] This invention relates to the field of combustion equipment technology, specifically to a fully premixed low-NOx intelligent burner. Background Technology

[0002] With the increasingly stringent requirements of modern industry for energy conservation and emission reduction, fully premixed combustion technology has been widely used in the field of thermal energy equipment such as boilers and heating furnaces because it can provide a uniform mixture of fuel and oxidant, thereby improving combustion efficiency and reducing pollutant emissions.

[0003] However, in the gas premixing stage, most existing technologies rely on static mixers or simple fan swirls for physical agitation. This passive or single steady-state fluid mixing method is difficult to completely break down the laminar boundaries between gases of different densities. Especially under variable load conditions, the conventional stable gas supply mode is prone to gas stratification and local concentration enrichment within the pipeline. There is a lack of a dynamic excitation mixing method that can actively introduce high-frequency pulse kinetic energy and forcibly tear apart the gas boundaries, resulting in limited premixing homogeneity and directly affecting the completeness of subsequent combustion. Secondly, in terms of nitrogen oxide suppression, traditional low-NOx burners usually adopt a single flue gas recirculation overall air staged combustion technology. This crude mixing method often mixes inert gases into the main gas flow all at once, and excessive mixing can easily lead to flame instability, flameout, or even flameout. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a fully premixed low-NOx intelligent burner, which solves the problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fully premixed low-NOx intelligent burner, comprising:

[0006] The front-mounted volute is used to fix the structure of the fully premixed low-NOx intelligent burner.

[0007] The concentrating hopper is located on the front volute and is used to transport the gaseous fuel required for combustion;

[0008] The intake premixing mechanism is located on the front volute and is used to input and mix the pre-input gaseous fuel;

[0009] The emission control mechanism is located on the central bucket pipe and is used to form a synchronous gas fuel delivery control structure;

[0010] The end combustion mechanism is located on the converging bucket tube and is used to form a multi-path output ignition end structure;

[0011] The low-NOx output mechanism is located on the front volute and works with the stationary guide plate, combustion end pipe and gas delivery end to provide the nitrogen required for combustion mixing.

[0012] The reciprocating mixing mechanism is located on the front volute and works with the stationary guide plate to intermittently deliver the oxygen-enriched gas required for the combustion of gaseous fuels.

[0013] The unidirectional control mechanism is located on the reciprocating mixing mechanism, and works with the air inlet bend and the air delivery bend to form an intelligent unidirectional delivery pipeline structure during reciprocating suction.

[0014] Preferably, the concentrating tube is fixed to the side output end of the front volute, while the intake premixing mechanism is located inside the front volute, the emission control mechanism is located inside the concentrating tube, the end combustion mechanism is located at the output end of the concentrating tube, the low-NOx output mechanism is mounted on the front volute and the end combustion mechanism, the reciprocating mixing mechanism is located on the front volute, and there are two sets of unidirectional control mechanisms, which are arranged in opposite directions at the input and output ends of the reciprocating mixing mechanism.

[0015] Preferably, the intake premixing mechanism includes a stationary guide plate and an exhaust side duct. The stationary guide plate is fixed inside the front volute, and an electrically driven premixing impeller rotates inside the stationary guide plate. The exhaust side duct is fixed at the input port of the stationary guide plate, and an intake pipe is provided at the input port of the exhaust side duct. An electrically driven rotating closed baffle is provided on the intake pipe.

[0016] Preferably, the emission control mechanism includes a side frame and a guide V-shaped plate. The side frame is fixed to the side of the concentrating bucket tube, and the side frame has parallel opposing sealing shelves that rotate on it. The opposing sealing shelves extend into the concentrating bucket tube. One end of the rotation axis of the opposing sealing shelves is fixed with a synchronous connecting rod, and the parallel synchronous connecting rods are relatively parallel to each other. The outer ends of the synchronous connecting rods are hinged to a parallel connecting rod. The guide V-shaped plate is fixed to the inner center of the concentrating bucket tube and is placed between the two sets of opposing sealing shelves.

[0017] Preferably, the end combustion mechanism includes a combustion end tube, which is fixed to the output end of the concentrating bucket tube, and an ignition end tube is fixed inside the combustion end tube. The combustion end tube is also provided with ignition end tubes arranged in a ring around it.

[0018] Preferably, the low-NOx output mechanism includes a nitrogen transfer pipe and a nitrogen transfer pipe. The nitrogen transfer pipe is fixed to the side of the combustion end pipe and is connected to the gas supply end input end, while the nitrogen transfer pipe is fixed to the side of the stationary guide plate and its input end is connected to the output end of the nitrogen transfer pipe side.

[0019] Preferably, the reciprocating mixing mechanism includes a top seat and a piston push rod. The top seat is fixed to the top of the front volute, and a transfer sealing cylinder is fixed on the top seat. The transfer sealing cylinder is a cylindrical structure with one side opening. An electrically controlled rotating cam is provided on the top seat, and a traction connecting rod is hinged to the outer end of the rotating cam. A piston sealing block structure is provided at one end of the piston push rod and is embedded in the transfer sealing cylinder for sliding. The outer end of the piston push rod is hinged to the end of the traction connecting rod away from the rotating cam. The intake bend is fixed to the side input port of the transfer sealing cylinder, and the output bend is fixed to the side output port of the transfer sealing cylinder. The intake bend and the output bend are close to each other.

[0020] Preferably, the one-way control mechanism includes a one-way conveying cylinder, which is fixed on the air inlet bend and the air outlet bend, and the two sets of one-way conveying cylinders are installed in completely opposite directions. A sealing ball seat is embedded and slidably inserted in the one-way conveying cylinder, and a reset snap ring is connected between the sealing ball seat and the inner wall of the one-way conveying cylinder.

[0021] Preferably, the nitrogen transfer pipe is equipped with a premixing valve with an electronically controlled switch.

[0022] Preferably, a diffusion cone is fixed at one end of the gas delivery bend that extends into the stationary guide plate. The diffusion cone consists of a set of cones and a side frame. The oxygen-enriched gas output from the gas delivery bend will first contact the cones of the diffusion cone.

[0023] This invention provides a fully premixed, low-NOx intelligent burner. It has the following beneficial effects:

[0024] 1. This invention achieves high-frequency pulsed precision pumping of oxygen-enriched gas through the mechanical linkage of a reciprocating mixing mechanism and a unidirectional control mechanism. During equipment operation, the continuous circular motion of the rotating cam is smoothly and precisely converted into the linear reciprocating motion of the piston push rod via the traction linkage. The entire mechanical transmission chain unfolds smoothly and without interference, ensuring the absolute stability of high-frequency operation. Simultaneously, the alternating vacuum negative pressure and positive pressure thrust generated by the piston sliding directly force the unidirectional control mechanism in the air intake and delivery pipelines to respond, driving the sealing ball seat to overcome the spring force of the return spring and adaptively open and close.

[0025] 2. By utilizing the specific spatial structure of the intake premixing mechanism and the diffusion cone, the device achieves deep homogeneous mixing of multiple airflows with different properties within a limited space. In the initial stage, the gaseous fuel undergoes physical trimming of the flow channel cross-section by a controlled rotating closed baffle, achieving precise quantitative throttling operation without interfering with the main flow pattern.

[0026] 3. This invention utilizes a porous, nested tube structure to achieve efficient physical segmentation and array-style jet reshaping of the main airflow. The wide-range mixed airflow entering the combustion end tube is forced and uniformly squeezed into the surrounding ignition end tubes under the pressure stabilizing and buffering effect of the internal cavity. This physical guiding action transforms the large air mass, which is prone to pulsating backfire, into a more efficient flow. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the main structure of the present invention. Figure 1 ;

[0028] Figure 2 This is a three-dimensional schematic diagram of the main structure of the present invention. Figure 2 ;

[0029] Figure 3 This is a three-dimensional schematic diagram of the main structure of the present invention. Figure 3 ;

[0030] Figure 4 This is a schematic diagram of the internal structure of the main body of the present invention. Figure 1 ;

[0031] Figure 5 This is a schematic diagram of the internal structure of the main body of the present invention. Figure 2 ;

[0032] Figure 6 This is a schematic diagram of the installation state of the emission control mechanism of the present invention;

[0033] Figure 7 This is a schematic diagram of the installation state of the reciprocating mixing mechanism of the present invention. Figure 1 ;

[0034] Figure 8 This is a schematic diagram of the installation state of the reciprocating mixing mechanism of the present invention. Figure 2 ;

[0035] Figure 9 This is a schematic diagram of the installation state of the reciprocating mixing mechanism of the present invention. Figure 3 ;

[0036] Figure 10 This is the reciprocating mixing mechanism structure of the present invention;

[0037] Figure 11 This is a cross-sectional schematic diagram of the unidirectional control mechanism structure of the present invention.

[0038] The components include: 1. Front volute; 2. Concentrating bucket tube; 3. Intake premixing mechanism; 4. Emission control mechanism; 5. End combustion mechanism; 6. Low-NOx output mechanism; 7. Reciprocating mixing mechanism; 8. One-way control mechanism; 31. Stationary guide plate; 32. Premixing impeller; 33. Exhaust side duct; 34. Intake pipe; 35. Enclosed partition; 41. Side frame; 42. Opposite sealing shelf; 43. Synchronous connecting rod; 44. Parallel connecting rod; 45. 51. Guide V-shaped plate; 52. Combustion end pipe; 53. Gas delivery end; 54. Ignition end pipe; 65. Nitrogen transfer pipe; 66. Nitrogen transfer pipe; 67. Premix valve; 78. Top seat; 79. Transfer sealing cylinder; 70. Rotating cam; 71. Traction connecting rod; 72. Piston push rod; 73. Inlet bend; 74. Gas delivery bend; 75. Diffusion cone; 86. One-way delivery cylinder; 87. Sealing ball seat; 88. Reset snap ring. Detailed Implementation

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see the appendix Figure 1 - Appendix Figure 4 This invention provides a fully premixed low-NOx intelligent burner, comprising: a front volute 1 for fixing the structure of the fully premixed low-NOx intelligent burner;

[0041] Please see the appendix Figure 2 - Appendix Figure 3 The concentrating tube 2 is located on the front volute 1 and is used to transport the gaseous fuel required for combustion. The concentrating tube 2 is fixed to the side output end of the front volute 1.

[0042] Please see the appendix Figure 3 - Appendix Figure 6 The intake premixing mechanism 3 is located on the front volute 1 and is used to input and mix the pre-input gaseous fuel, while the intake premixing mechanism 3 is set inside the front volute 1.

[0043] Please see the appendix Figure 3 - Appendix Figure 6The intake premixing mechanism 3 includes a stationary guide plate 31 and an exhaust side duct 33. The stationary guide plate 31 is fixed inside the front volute 1, and an electrically controlled premixing impeller 32 rotates inside the stationary guide plate 31. The exhaust side duct 33 is fixed to the input port of the stationary guide plate 31, and an intake pipe 34 is provided at the input port of the exhaust side duct 33. An electrically controlled rotating closed baffle 35 is provided on the intake pipe 34. When a large amount of external gaseous fuel flows in through the intake pipe 34, the closed baffle 35 responds to the electronic control command and rotates at a specific axial angle. The solid plate surface of the closed baffle 35 forms a shape within the inner cavity of the intake pipe 34. A rigid, inclined flow barrier is formed, forcing the straight-moving gaseous fuel to impact the plate surface and undergo severe throttling and flow restriction. By changing the plate surface inclination angle, the cross-section of the gas passage is precisely reduced, achieving dynamic determination of the total fuel flow. The throttled gaseous fuel then penetrates the exhaust side passage 33 and rushes into the constrained space of the stationary guide plate 31 at a specific tangential angle. At the same time, the premixed impeller 32 maintains extremely high rotational speed inside the stationary guide plate 31. The high-speed sweeping blades of the premixed impeller 32 exert violent mechanical shearing force on the gaseous fuel rushing into the stationary guide plate 31, forcibly dragging it into the high-speed rotating centrifugal vortex.

[0044] Please see the appendix Figure 3 - Appendix Figure 6 The emission control mechanism 4 is located on the central bucket pipe 2 and is used to form a synchronous gas fuel delivery control structure. The emission control mechanism 4 is set inside the central bucket pipe 2.

[0045] Please see the appendix Figure 3 - Appendix Figure 6The emission control mechanism 4 includes a side frame 41 and a guide V-shaped plate 45. The side frame 41 is fixed to the side of the concentrating tube 2, and parallel opposing sealing shelves 42 are rotatably distributed on the side frame 41. The opposing sealing shelves 42 extend into the concentrating tube 2. A synchronous connecting rod 43 is fixed to one end of the rotation axis of the opposing sealing shelves 42, and the parallel synchronous connecting rods 43 are relatively parallel to each other. The outer ends of the synchronous connecting rods 43 are hinged to a parallel connecting rod 44. The guide V-shaped plate 45 is fixed to the inner center of the concentrating tube 2 and is placed between the two sets of opposing sealing shelves 42. When the mixed airflow approaches the area where the side frame 41 is located, the high-energy airflow first impacts the tip of the guide V-shaped plate 45. At the sharp end, the guide V-shaped plate 45 acts like a splitter, forcibly cutting the thick airflow column from the center, forcing the airflow to slide smoothly along its inclined sidewalls to both sides, eliminating the disorderly congestion of airflow in the center of the pipe. At this time, the power traction parallel link 44 performs a linear pulling action. The linear displacement of the parallel link 44 directly forces all the hinged synchronous links 43 to deflect synchronously at the same angle. The synchronous link 43 then transmits this deflection torque to the rotation shaft of the opposing sealing shelf 42, driving the two sets of opposing sealing shelves 42 to move closer and flip towards the guide V-shaped plate 45 under the support of the side frame 41. The plate surface of the opposing sealing shelf 42 gradually approaches the inclined surface of the guide V-shaped plate 45.

[0046] Please see the appendix Figure 1 - Appendix Figure 4 The end combustion mechanism 5 is located on the concentrating bucket tube 2 and is used to form a multi-path output ignition end structure. The end combustion mechanism 5 is set at the output end of the concentrating bucket tube 2.

[0047] Please see the appendix Figure 1 - Appendix Figure 4 The end combustion mechanism 5 includes a combustion end pipe 51, which is fixed to the output end of the concentrating bucket pipe 2. An ignition end pipe 53 is fixed inside the combustion end pipe 51. The combustion end pipe 51 is also equipped with a series of ignition end pipes 53 arranged in a ring. After the mixed gas with a precisely determined flow rate is poured into the internal cavity of the combustion end pipe 51, it encounters a large number of ignition end pipes 53 arranged in a tight ring. The wide internal cavity of the combustion end pipe 51 acts as a pressure stabilizing buffer and distribution area for high-pressure gas, forcing the high-energy airflow to reduce its forward speed and diffuse laterally in all directions, ensuring that the gas pressure in each area inside reaches absolute equilibrium. Under the continuous accumulation of high pressure, the evenly distributed high-pressure mixed gas is squeezed into the ignition end pipes 53. The diameter of the ignition end pipes 53 once again exerts a violent compression on the gas that has entered and concentrates it for ignition.

[0048] Please see the appendix Figure 4 - Appendix Figure 5The low-NOx output mechanism 6 is located on the front volute 1 and works with the stationary guide plate 31, the combustion end pipe 51 and the gas supply end 52 to burn the nitrogen required for the mixture. The low-NOx output mechanism 6 is mounted on the front volute 1 and the end combustion mechanism 5.

[0049] Please see the appendix Figure 4 - Appendix Figure 5 The low-NOx output mechanism 6 includes a nitrogen transfer pipe 61 and a nitrogen transfer pipe 62. The nitrogen transfer pipe 61 is fixed to the side of the combustion end pipe 51 and is connected to the input end of the gas delivery end 52. The nitrogen transfer pipe 62 is fixed to the side of the stationary guide plate 31 and its input end is connected to the output end of the side of the nitrogen transfer pipe 61. The high-pressure nitrogen flow that is rushing rapidly along the nitrogen transfer pipe 62 is about to enter the front-end mixing area when it encounters the forced interception and dynamic control of the premixing valve 63. The precision mechanical valve core inside the premixing valve 63 responds to the electronic control signal in real time and performs a reciprocating lifting and cutting action with a very small stroke in the valve body channel. When the valve core operates at high frequency, its rigid blocking surface directly interferes with the flow cross section of the nitrogen transfer pipe 62. The premixing valve 63 applies periodic throttling and shearing to the originally continuous and smooth high-pressure nitrogen flow through the high-speed change of the valve core opening.

[0050] Please see the appendix Figure 4 - Appendix Figure 5 A premixing valve 63 with an electronically controlled switch is installed on the nitrogen transfer pipe 62.

[0051] Please see the appendix Figure 3 - Appendix Figure 10 The reciprocating mixing mechanism 7 is located on the front volute 1 and works with the stationary guide plate 31 to intermittently deliver the oxygen-enriched gas required for the combustion of gaseous fuel. The reciprocating mixing mechanism 7 is set on the front volute 1.

[0052] Please see the appendix Figure 7 - Appendix Figure 10The reciprocating mixing mechanism 7 includes a top seat 71 and a piston push rod 75. The top seat 71 is fixed to the top of the front volute 1, and a transfer sealing cylinder 72 is fixed on the top seat 71. The transfer sealing cylinder 72 is a cylindrical structure with one side opening. An electrically controlled rotating cam 73 is provided on the top seat 71, and a traction connecting rod 74 is hinged to the outer end of the rotating cam 73. One end of the piston push rod 75 is provided with a piston sealing block structure, which is embedded in the transfer sealing cylinder 72 and slides. The outer end of the piston push rod 75 is hinged to the end of the traction connecting rod 74 away from the rotating cam 73. An intake bend 76 is fixed to the side input port of the transfer sealing cylinder 72, and an output bend 77 is fixed to the side output port of the transfer sealing cylinder 72. The intake bend 76 and the output bend 77 are close to each other. Under the stable rigid support of the top seat 71, the driving force forces the rotation. Cam 73 performs high-speed, uninterrupted eccentric rotary motion. The special eccentric profile of cam 73 periodically expands outward and contracts inward during rotation, forcibly converting the pure circumferential torsional torque into a radial push-pull vector force. This vector force acts directly on the hinged traction rod 74, forcing the traction rod 74 to undergo a combined displacement of swaying and longitudinal extension. The traction rod 74 then transfers all of its push-pull kinetic energy to the piston push rod 75. The piston push rod 75, bearing the transmitted kinetic energy, carries the piston sealing block and performs high-frequency reciprocating sliding within the cavity of the intermediate sealing cylinder 72. When the volume of the intermediate sealing cylinder 72 increases sharply due to the outward retraction of the piston push rod 75, the internal air is pulled to form a strong vacuum suction field. When cam 73 passes the extreme point, the traction rod 74 exerts force in the opposite direction, and the piston push rod 75 violently plunges into the depths of the intermediate sealing cylinder 72, instantly compressing the inhaled gas.

[0053] Please see the appendix Figure 7 -Appendix Figure 10 The gas delivery bend 77 extends into the stationary guide plate 31, where a diffusion cone 78 is fixed. The diffusion cone 78 consists of a set of cones and a side frame. The oxygen-enriched gas output from the gas delivery bend 77 first contacts the cones of the diffusion cone 78. The inlet bend 76 and the gas delivery bend 77, relying on their parallel pipeline layout, respectively act as the swallowing throat and the jet carrier of the oxygen-enriched gas. When a strong suction force is generated inside, the external oxygen-enriched gas flows in completely along the flow channel of the inlet bend 76, filling the gas storage. The space was then instantly filled with high pressure, and the oxygen-enriched gas was forcibly squeezed into the gas delivery bend 77. It accelerated along the inner wall of the bend and rushed straight to the end. When the high-pressure oxygen-enriched column reached the end of the gas delivery bend 77, it violently impacted the tip of the diffuser cone 78. The diffuser cone 78 used the gradually changing geometric slope of the cone from sharp to wide to forcibly cut the originally dense and thick direct airflow like a wedge separator. The high-pressure airflow was forced to spread out laterally in all directions along the slope of the cone.

[0054] Please see the appendix Figure 5 -Appendix Figure 11The one-way control mechanism 8 is located on the reciprocating mixing mechanism 7. It works with the air inlet bend 76 and the air delivery bend 77 to form an intelligent one-way delivery pipeline structure during reciprocating suction. There are two sets of one-way control mechanisms 8, which are set in opposite directions at the input and output ends of the reciprocating mixing mechanism 7.

[0055] Please see the appendix Figure 11 The one-way control mechanism 8 includes a one-way conveying cylinder 81, which is fixed to the inlet bend 76 and the outlet bend 77. The two sets of one-way conveying cylinders 81 are installed in completely opposite directions. A sliding sealing ball seat 82 is embedded in the one-way conveying cylinder 81, and a reset snap ring 83 is connected between the sealing ball seat 82 and the inner wall of the one-way conveying cylinder 81. When a forward thrust is generated inside the flow channel, the high-energy airflow rushes into the force-bearing end cavity of the one-way conveying cylinder 81. This fluid pressure is directly applied to the spherical contour of the sealing ball seat 82. Under the strong pressure, the sealing ball seat 82... The original supporting force applied by the rear reset spring 83 slides and retracts along the smooth inner wall of the one-way conveying cylinder 81. As the sealing ball seat 82 moves out of position, the originally blocked annular flow channel inside the one-way conveying cylinder 81 is instantly and completely opened, allowing gas to penetrate the spring gap at high speed. Conversely, when the external air pressure drops suddenly and encounters a strong impact from the reverse airflow, the reset spring 83 releases the huge elastic potential energy it has accumulated, forcefully pushing the sealing ball seat 82 back to its original position. At the same time, the pressure of the reverse airflow acts on the back of the sealing ball seat 82, forming an absolute resultant force with the thrust of the reset spring 83.

[0056] Based on the above technical solution, this embodiment of the invention also provides a working principle of a fully premixed low-NOx intelligent burner, including the following: When the equipment starts up, the reciprocating mixing mechanism 7 loaded on the front volute 1 first engages in airflow suction and pumping operations. The electronic control mechanism applies a rotational driving force to the rotating cam 73, forcing the rotating cam 73 to perform continuous eccentric circular rotation. As the rotation trajectory of the rotating cam 73 changes, its outer hinge end generates a periodic radial displacement. This displacement change applies alternating pushing and pulling forces to the traction link 74. The traction link 74 then acts as a kinetic energy transfer medium, converting the eccentric rotational torque it bears into linear pushing and pulling kinetic energy, which directly acts on the outer end of the piston push rod 75. The piston push rod 75, which bears this kinetic energy... The piston sealing block structure at its end performs high-frequency reciprocating linear sliding within the inner cavity of the transfer sealing cylinder 72, thereby alternately creating two fluid environments: vacuum negative pressure and positive pressure compression inside the transfer sealing cylinder 72. When a vacuum negative pressure suction force is formed inside the transfer sealing cylinder 72 due to the outward pulling stroke of the piston push rod 75, the two sets of one-way control mechanisms 8 mounted on the inlet bend 76 and the outlet bend 77 respond synchronously. The one-way conveying cylinder 81 at the end of the inlet bend 76 is first subjected to negative pressure traction. This suction force overcomes the original elastic force resistance applied by the return spring 83 inside the one-way conveying cylinder 81, forcibly pulling the sealing ball seat 82 away from its original closed position, and causing it to slide and retract within the inner wall of the one-way conveying cylinder 81, thereby completely opening the input path of the oxygen-enriched gas. External oxygen-enriched gas then surges into the inner cavity of the transfer sealing cylinder 72 through the ducted inlet bend 76. Simultaneously, the one-way control mechanism 8 at the end of the gas delivery bend 77, due to the one-way delivery cylinder 81 being installed in the opposite direction to the inlet end, experiences negative pressure suction, causing the sealing ball seat 82 at that end to tightly press against the gas delivery channel under the support of the reset spring 83, effectively preventing gas backflow. Immediately afterward, the rotating cam 73 crosses the dead center, the traction connecting rod 74 changes the direction of force, and forcefully pushes the piston rod 75 inward. The piston rod 75 penetrates deeply into the transfer sealing cylinder 72, forcibly compressing the previously inhaled oxygen-enriched gas, instantly transforming the interior of the transfer sealing cylinder 72 into a high-pressure pump-out state. Under this positive pressure impact, the sealing ball seat 82 at the end of the inlet bend 76 is subjected to… The pressure return mechanism, along with the reset snap ring 83, seals off the air intake. Meanwhile, the one-way control mechanism 8 at the end of the gas delivery bend 77 is opened by the high-pressure airflow. The internal sealing ball seat 82 presses against the reset snap ring 83 and slides to allow the high-pressure oxygen-enriched gas to rush into the gas delivery bend 77 and penetrate at high speed into the depths of the stationary guide plate 31. When the oxygen-enriched gas reaches the output end of the gas delivery bend 77, the airflow directly impacts the conical structure inside the diffuser cone 78. The cone of the diffuser cone 78, with its gradually expanding geometric slope, forcibly disperses the originally linear high-pressure oxygen-enriched gas flow. With the guidance of the side frame, the oxygen-enriched gas is evenly sprayed into the stationary guide plate 31 in a radial diffusion pattern, providing a broad contact area for subsequent deep premixing.While the oxygen-enriched gas is being pulsed and diffused, the gaseous fuel supply process is simultaneously unfolding in the intake premixing mechanism 3. The raw gaseous fuel continuously flows in through the intake pipe 34. At this time, an electronic control command applies a rotational adjustment action to the sealing baffle 35 inside the intake pipe 34. The sealing baffle 35 tilts at a specific angle according to a preset command, precisely cutting the flow cross-section of the intake pipe 34 by changing its blocking area, thereby strictly throttling and controlling the initial flow of the incoming gaseous fuel. The compliant gaseous fuel, quantitatively screened by the sealing baffle 35, passes through the exhaust side channel 33 and flows unimpeded into the inner cavity of the stationary guide plate 31, directly colliding with the oxygen-enriched gas sprayed from the diffusion cone 78. Within the collection space of the stationary guide plate 31, the electric... The premixing impeller 32, driven by the control system, maintains continuous rotation at extremely high speeds. The blades of the high-speed rotating impeller 32 exert violent physical shearing and entrainment forces on the gaseous fuel and oxygen-enriched gas injected into the stationary guide plate 31. The powerful centrifugal force and vortex effect generated by the blade rotation forcibly tear and intertwine the two gases of different densities, breaking the original laminar flow state and creating an extremely chaotic turbulent mixing field. This forces the gaseous fuel molecules and oxygen-enriched gas molecules to undergo deep and uniform premixing. While the premixing impeller 32 performs powerful stirring, the low-NOx output mechanism 6 intervenes and initiates the denitrification and cooling gas ratio replenishment. An externally supplied nitrogen source is pressurized and injected into the nitrogen transfer pipe 61 through the gas delivery end 52. Subsequently, the airflow is split, with one stream containing nitrogen... The airflow is precisely redirected and merges into the nitrogen transfer pipe 62, directly approaching the premixing valve 63. Following the electronically controlled opening command, the premixing valve 63 performs secondary flow control on this nitrogen flow, then releases it into the side of the stationary guide plate 31. This measured amount of nitrogen is immediately drawn into the violent vortex generated by the premixing impeller 32, undergoing a three-phase deep crushing and mixing with the mixing gaseous fuel and oxygen-enriched gas. The forced incorporation of nitrogen significantly dilutes the unit calorific value of the mixed gas, locking in the basic gas source ratio for suppressing the generation of thermal nitrogen oxides at the end. The homogeneous ternary mixed gaseous fuel, oxygen-enriched gas, and nitrogen, after undergoing extreme agitation and pressurization by the premixing impeller 32, is propelled at extremely high velocity by the powerful dynamic pressure generated by the blades, breaking through the confinement of the front volute 1 and directly flowing into the focusing pipe 2. Inside the conveying channel, as this high-pressure, high-speed mixed airflow surges forward within the concentrating pipe 2, it impacts the guiding V-shaped plate 45 standing at the center of the channel. The guiding V-shaped plate 45, with its flow-breaking physical structure at its tip, forcibly cleaves the robust mixed airflow column from the center like a sharp blade, forcing the airflow to smoothly flow along the inclined surfaces of the V-shaped plate, effectively eliminating the accumulation, stagnation, and turbulence dead zones that easily occur in the center of the pipe. The mixed gas, after being regulated and diverted by the guiding V-shaped plate 45, continues forward towards the throttling area of ​​the emission control mechanism 4. At this point, an external control source applies linear push-pull kinetic energy to the parallel connecting rod 44. During this movement, the parallel connecting rod 44 causes the parallel synchronous connecting rod 43, which is hinged to it, to deflect at an angle.Because the synchronizing linkage 43 is arranged in a relatively parallel manner, its deflection action is synchronously and consistently converted into torque force against the rotating shaft, thereby forcibly driving the two sets of opposing sealing shelves 42 extending into the concentrating tube 2 to perform relative flipping and opening actions. When the opposing sealing shelves 42 flip inward and move closer together, the flow gap between them and the guide V-shaped plate 45 and the inner wall of the concentrating tube 2 is extremely compressed, applying a tight mechanical jam to the flowing mixed gas, thereby reducing the gas flow rate; when the parallel linkage 44 is pulled in the opposite direction, the opposing sealing shelves 42 flip outward and open, the flow gap is completely released, and the flow rate of the mixed gas increases dramatically. Through the synchronous transmission of this mechanical linkage, transient, stepless adjustment of the gas flow rate sent to the combustion terminal is achieved, and the flow rate is precisely determined by the emission control mechanism 4. The mixed airflow eventually penetrates the output defense line of the concentrating tube 2 and flows entirely into the core component of the end combustion mechanism 5, the combustion end tube 51. Simultaneously, another stream of pure nitrogen, diverted at the nitrogen transfer tube 61, also penetrates into the side cavity of the combustion end tube 51. This unmixed pure nitrogen forms a diffuse inert gas protective curtain inside the combustion end tube 51, further enveloping and diluting the newly arrived mixed airflow. Subsequently, under the internal pressure of the combustion end tube 51, all fluids fully penetrate and fill the ignition end tubes 53 surrounding and distributed within the combustion end tube 51. These surrounding ignition end tubes 53 further divide the large airflow into multiple small jet streams, which then converge at the terminal ports of the ignition end tubes 53, unleashing a high-energy ignition action that instantly detonates and ignites the multiple jet streams.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully premixed low-NOx intelligent burner, characterized in that, include: The front volute (1) is used to fix the structure of the fully premixed low-NOx intelligent burner; The concentrator tube (2) is located on the front volute (1) and is used to transport the gaseous fuel required for combustion. The intake premixing mechanism (3) is located on the front volute (1) and is used to input and mix the pre-input gaseous fuel; The emission control mechanism (4) is located on the central bucket pipe (2) and is used to form a synchronous gas fuel delivery control structure; The end combustion mechanism (5) is located on the concentrating bucket tube (2) and is used to form a multi-path output ignition end structure; The low-NOx output mechanism (6) is located on the front volute (1) and works with the stationary guide plate (31), combustion end pipe (51) and gas delivery end (52) to burn the nitrogen required for mixing. The reciprocating mixing mechanism (7) is located on the front volute (1) and works with the stationary guide plate (31) to intermittently deliver the oxygen-enriched gas required for the combustion of gaseous fuel; The one-way control mechanism (8) is located on the reciprocating mixing mechanism (7) and works with the inlet bend (76) and the outlet bend (77) to form an intelligent one-way delivery pipeline structure during reciprocating suction.

2. The fully premixed low-NOx intelligent burner according to claim 1, characterized in that, The concentrating tube (2) is fixed to the side output end of the front volute (1), while the intake premixing mechanism (3) is set inside the front volute (1), the emission control mechanism (4) is set inside the concentrating tube (2), the end combustion mechanism (5) is set at the output end of the concentrating tube (2), the low nitrogen output mechanism (6) is mounted on the front volute (1) and the end combustion mechanism (5), the reciprocating mixing mechanism (7) is set on the front volute (1), and there are two sets of one-way control mechanisms (8), which are set opposite to each other at the input end and the output end of the reciprocating mixing mechanism (7).

3. The fully premixed low-NOx intelligent burner according to claim 1, characterized in that, The intake premixing mechanism (3) includes a stationary guide plate (31) and an exhaust side channel (33). The stationary guide plate (31) is fixed inside the front volute (1), and an electrically driven premixing impeller (32) rotates inside the stationary guide plate (31). The exhaust side channel (33) is fixed at the input port of the stationary guide plate (31), and an intake pipe (34) is provided at the input port of the exhaust side channel (33). An electrically driven rotating closed baffle (35) is provided on the intake pipe (34).

4. The fully premixed low-NOx intelligent burner according to claim 1, characterized in that, The emission control mechanism (4) includes a side frame (41) and a guide V-shaped plate (45). The side frame (41) is fixed to the side of the concentrating tube (2), and there are parallel opposing sealing shelves (42) rotating on the side frame (41). The opposing sealing shelves (42) extend into the concentrating tube (2). One end of the rotation axis of the opposing sealing shelves (42) is fixed with a synchronous connecting rod (43), and the parallel synchronous connecting rods (43) are relatively parallel to each other. The outer ends of the synchronous connecting rods (43) are hinged to a parallel connecting rod (44). The guide V-shaped plate (45) is fixed in the center of the concentrating tube (2) and is placed between the two sets of opposing sealing shelves (42).

5. The fully premixed low-NOx intelligent burner according to claim 1, characterized in that, The end combustion mechanism (5) includes a combustion end tube (51), which is fixed at the output end of the concentrating bucket tube (2). An ignition end tube (53) is fixed inside the combustion end tube (51), and the ignition end tube (53) is arranged in a circumferential distribution inside the combustion end tube (51).

6. The fully premixed low-NOx intelligent burner according to claim 1, characterized in that, The low-NOx output mechanism (6) includes a nitrogen transfer pipe (61) and a nitrogen transfer pipe (62). The nitrogen transfer pipe (61) is fixed on the side of the combustion end pipe (51) and connected to the input end of the gas delivery end (52). The nitrogen transfer pipe (62) is fixed on the side of the stationary guide plate (31) and its input end is connected to the output end of the side of the nitrogen transfer pipe (61).

7. The fully premixed low-NOx intelligent burner according to claim 1, characterized in that, The reciprocating mixing mechanism (7) includes a top seat (71) and a piston push rod (75). The top seat (71) is fixed to the top of the front volute (1), and a transfer sealing cylinder (72) is fixed on the top seat (71). The transfer sealing cylinder (72) is a cylindrical structure with an opening on one side. An electrically controlled rotating cam (73) is provided on the top seat (71), and a traction connecting rod (74) is hinged to the outer end of the rotating cam (73). (75) One end is provided with a piston sealing block structure and is embedded in the transfer sealing cylinder (72) for sliding. The outer end of the piston push rod (75) is hinged to the end of the traction connecting rod (74) away from the rotating cam (73). The intake bend (76) is fixed at the side input port of the transfer sealing cylinder (72), and the delivery bend (77) is fixed at the side output port of the transfer sealing cylinder (72). The intake bend (76) and the delivery bend (77) are close to each other.

8. The fully premixed low-NOx intelligent burner according to claim 1, characterized in that, The one-way control mechanism (8) includes a one-way conveying cylinder (81), which is fixed on the air inlet bend (76) and the air delivery bend (77). The installation directions of the two sets of one-way conveying cylinders (81) are completely opposite. A sealing ball seat (82) is embedded and slidably inserted in the one-way conveying cylinder (81), and a reset snap ring (83) is connected between the sealing ball seat (82) and the inner wall of the one-way conveying cylinder (81).

9. A fully premixed low-NOx intelligent burner according to claim 6, characterized in that, The nitrogen transfer pipe (62) is equipped with a premixing valve (63) with an electronically controlled switch.

10. A fully premixed low-NOx intelligent burner according to claim 7, characterized in that, The gas delivery bend (77) extends into the stationary guide plate (31) and is fixed with a diffusion cone (78). The diffusion cone (78) consists of a set of cones and a side frame. The oxygen-enriched gas output from the gas delivery bend (77) will first contact the cones of the diffusion cone (78).

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