Component-based concealed afterburner

Abstract

The present invention relates to the field of aviation technology, and provides a component-capable stealth afterburner combustion chamber, comprising: a combustion chamber, a diffuser arranged in the combustion chamber, a support plate and an inner cone, a mixer and a drive assembly, wherein the inner wall surface of the combustion chamber is provided with an accommodating cavity; the diffuser is arranged on the top surface of the support plate, and forms a first flow channel with the top surface of the combustion chamber; the inner cone is arranged on the bottom surface of the support plate, and forms a second flow channel with the bottom surface of the diffuser; the first flow channel and the second flow channel are respectively connected to the inlet of the combustion chamber; the drive assembly is connected to the mixer, and is used to drive the mixer to be connected to the end of the diffuser away from the inlet of the combustion chamber, or to drive the mixer to be accommodated in the accommodating cavity, so as to reduce flow resistance, prevent the mixer from being in a high-temperature environment for a long time, extend the life of the mixer, and enhance its reliability.

Description

Technical Field

[0001] The present invention relates to the field of aviation technology, and in particular to a component-capable stealth afterburner combustion chamber. Background Art

[0002] Aircraft engines are the core power source of modern aircraft, and their performance directly impacts the aircraft's flight performance and efficiency. As a key component of an aircraft engine, the combustion chamber's primary function is to provide significant additional thrust in a short period of time to support demanding maneuvers such as takeoff, climb, and supersonic flight. Despite the combustion chamber's crucial role in enhancing engine performance, traditional combustion chamber designs still have several limitations.

[0003] In the existing combustion chamber design, in the turbojet mode, components such as the mixer and outer nozzle rod are not used and are directly exposed to the high-temperature airflow, which increases the flow resistance and affects the service life of the components. Summary of the Invention

[0004] The present invention provides a component-capable afterburner combustion chamber, which is used to solve the problem in the prior art that in turbojet mode, the mixer is not applicable and is directly exposed to high-temperature airflow for a long time, which increases flow resistance and affects service life and reliability.

[0005] The present invention provides a component-capable afterburner combustion chamber, comprising: a combustion chamber, an inner wall surface of the combustion chamber being provided with an accommodating cavity; a diffuser, a support plate and an inner cone arranged in the combustion chamber, the diffuser being arranged on the top surface of the support plate and forming a first flow channel with the top surface of the combustion chamber; the inner cone being arranged on the bottom surface of the support plate and forming a second flow channel with the bottom surface of the diffuser; the first flow channel and the second flow channel being respectively connected to the inlet of the combustion chamber; a mixer and a drive assembly, the drive assembly being connected to the mixer and being used to drive the mixer to be connected to the end of the diffuser away from the inlet of the combustion chamber, or to drive the mixer to be accommodated in the accommodating cavity.

[0006] According to the present invention, a component is provided that can be used as a hidden afterburner combustion chamber. The drive assembly includes a drive motor, a connecting rod and a controller. The drive end of the drive motor is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the mixer; the controller is electrically connected to the drive motor and is used to control the drive motor to drive the connecting rod to drive the mixer to move.

[0007] According to the present invention, a component is provided for a hidden afterburner combustion chamber, comprising an outer culvert spray rod, a through hole being provided at the bottom of the accommodating cavity, and the outer culvert spray rod being retractable into the accommodating cavity or inserted into the through hole to spray oil into the combustion chamber.

[0008] According to the present invention, a component can be provided with a hidden afterburner combustion chamber, the bottom of the accommodating cavity is provided with an opening, and a cover plate is provided at the opening. The cover plate is connected to the controller, and after the mixer and the outer culvert injection rod are placed in the target position, the cover plate covers the opening.

[0009] According to a component provided by the present invention, a stealth afterburner combustion chamber is provided, wherein the diffuser, the support plate and the inner cone are integrally formed parts.

[0010] According to the present invention, a component is provided with a hidden afterburner combustion chamber, a cooling channel is provided in the support plate, a cooling port is provided in the inner cone, an air outlet is provided on the support plate, the cooling port and the air outlet are respectively connected to the cooling channel, and the cooling port is used to connect with the outlet of the cooling device.

[0011] According to a component provided by the present invention, a stealth afterburner combustion chamber is provided, wherein the diffuser is provided with an oil inlet, and the side wall of the support plate is provided with an oil injection port, and the oil inlet is communicated with the oil injection port.

[0012] According to the present invention, a component can be used as a hidden afterburner combustion chamber. The side wall of the support plate is provided with a first groove, and the first groove extends along the height direction of the support plate. The axis of the first groove is perpendicular to the axis of the combustion chamber inlet, and the fuel injection port is provided on the side wall of the first groove.

[0013] According to a component provided by the present invention, a hidden afterburner combustion chamber is provided, and a second groove is provided on the top surface of the inner cone, and the first groove is communicated with the second groove.

[0014] According to a component provided by the present invention, a stealth afterburner combustion chamber is connected to the diffuser on a first side of the mixer, and the mixer is arranged to be inclined downward along the first side of the mixer toward the second side of the mixer; and / or, a first drainage channel is provided on the top surface of the mixer, and a second drainage channel is provided on the bottom surface of the mixer, and the first drainage channel and the second drainage channel are both extended along the extension direction of the mixer.

[0015] The component provided by the present invention can implicitly boost the combustion chamber by connecting the drive assembly to the mixer. When external combustion is required, the drive assembly drives the mixer to leave the accommodating cavity and connect to the end of the diffuser away from the combustion chamber inlet; when external combustion is not required, the drive assembly drives the mixer to be stored in the accommodating cavity, thereby reducing flow resistance, preventing the mixer from being in a high-temperature environment for a long time, extending the life of the mixer, and enhancing its reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a structural diagram of the mixer and the outer spray rod provided by the present invention being accommodated in the accommodating cavity;

[0018] Figure 2 This is a structural diagram of the mixer and the outer culvert spray rod provided by the present invention installed in the combustion chamber;

[0019] Figure 3 This is a schematic structural diagram of an integrated assembly of a mixer provided by the present invention installed on an inner cone for bleed air cooling and a support plate diffuser and injection stabilizer;

[0020] Figure 4 It is a schematic structural diagram of the integrated assembly of the bleed air cooled inner cone and the support plate diffuser injection stabilizer provided by the present invention;

[0021] Reference numerals:

[0022] 10. Combustion chamber; 11. Accommodation chamber;

[0023] 20. The integrated assembly of the inner cone and support plate diffuser for bleed air cooling and the fuel injection stabilizer;

[0024] 21. Diffuser; 211. Oil inlet; 22. Support plate; 221. Oil injection port; 222. First groove; 23. Inner cone; 231. Cooling port; 232. Second groove; 233. First drainage portion; 234. Second drainage portion;

[0025] 30. Mixer; 40. Oil pipe; 60. External fuel injection rod. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the embodiments of the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0030] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0031] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will appreciate the applicability of other processes and / or the use of other materials.

[0032] The following combination Figures 1-4 The components of the present invention may be described as a hidden afterburner.

[0033] The component provided in the embodiment of the present invention can be a hidden afterburner combustion chamber, comprising a combustion chamber 10, an integrated assembly 20 of an inner cone for bleed air cooling and a support plate diffuser injection stabilizer, a mixer 30 and a drive assembly. An accommodating cavity 11 is provided on the inner wall surface of the combustion chamber 10. Figure 1 and Figure 2 As shown, the top inner wall of the combustion chamber 10 is provided with a boss, and the boss is provided with a receiving cavity 11. The integrated assembly 20 of the inner cone and support plate diffuser fuel injection stabilizer for bleed air cooling includes a diffuser 21, a support plate 22, and an inner cone 23. The diffuser 21, support plate 22 and inner cone 23 are arranged in the combustion chamber 10. Figure 4 As shown, the diffuser 21 is disposed on the top surface of the support plate 22. The direction in which the diffuser 21 extends aligns with the flow direction of the airflow within the combustion chamber 10, forming a first flow channel with the top surface of the combustion chamber 10. The diffuser 21 decelerates the high-speed intake airflow while increasing its pressure, thereby providing suitable airflow conditions for the subsequent combustion process. In one embodiment, the diffuser 21 comprises a first diffuser plate, a second diffuser plate, and a third diffuser plate, which are sequentially connected. The first diffuser plate is connected to the inner wall of the combustion chamber 10 and is located at the inlet of the combustion chamber 10. The bottom surface of the third diffuser plate is connected to the top surface of the support plate 22. The second diffuser plate is tilted upward from the first diffuser plate toward the third diffuser plate, thereby decelerating the intake airflow. An inner cone 23 is disposed on the bottom surface of the support plate 22. The inner cone 23 extends aligns with the flow direction of the airflow within the combustion chamber 10, forming a second flow channel with the bottom surface of the diffuser 21. It should be noted that the width of the diffuser 21 is greater than that of the support plate 22, and the width of the inner cone 23 is also greater than that of the support plate 22. This means that the airflow within the second flow channel can flow along both sides of the width of the support plate 22. The width of the support plate 22 is perpendicular to the direction of fluid flow. The first and second flow channels are each connected to the inlet of the combustion chamber 10, allowing the airflow to be effectively distributed between the two channels.

[0034] The airflow passing through the inlet of the combustion chamber 10 is divided into two parts: one part of the airflow enters the first flow channel, and after being decelerated and pressurized by the diffuser 21, provides high-pressure airflow for the combustion chamber 10; the other part of the airflow enters the second flow channel and is guided into the combustion chamber 10 by the inner cone 23. The inner cone 23 helps to enhance the mixing of air and fuel, thereby improving combustion efficiency.

[0035] Mixer 30 is located downstream of diffuser 21 to promote mixing of fuel and air, thereby optimizing the combustion process. In turbojet mode, since there is no need for external combustion, mixer 30 increases flow resistance. This exposure to high-temperature airflow can affect mixer 30's lifespan and reliability.

[0036] Based on this, the embodiment of the present invention uses the driving assembly 0 to drive the mixer 30 to move and adjust the position of the mixer 30. Specifically, the driving assembly is connected to the mixer 30, such as by gear transmission, hydraulic drive, electric drive, etc. When external combustion is not required (such as turbojet mode), the driving assembly drives the mixer 30 to be stored in the accommodating chamber 11 according to the preset path, such as Figure 1 As shown, the mixer 30 is prevented from being in a high temperature environment for a long time, and the flow resistance can also be reduced. In the non-turbojet mode, that is, when external combustion is required, the control component drives the mixer 30 to move along a preset path to the end of the diffuser 21 away from the inlet of the combustion chamber 10, and connects with the diffuser 21, as shown in FIG. Figure 2 As shown, it is used to promote mixing of fuel and air. In one embodiment, a matching portion is provided on the side of the diffuser 21 away from the inlet of the combustion chamber 10, and a snap-fit ​​portion is provided at the end of the mixer 30. When the mixer 30 moves to the end of the diffuser 21, the snap-fit ​​portion snaps into the matching portion, connecting the mixer 30 to the diffuser 21. In another embodiment, the connection can also be achieved by adsorption.

[0037] It should be noted that the accommodating chamber 11 is provided with an opening, and a cover is provided at the opening. When the mixer 30 needs to be moved, the cover is opened so that the mixer 30 can move in and out of the opening; after the movement is completed, the cover is closed at the opening to prevent the airflow in the combustion chamber 10 from entering the accommodating chamber 11.

[0038] The component provided in the embodiment of the present invention can implicitly boost the combustion chamber by connecting the drive assembly to the mixer 30. When external combustion is required, the drive assembly drives the mixer 30 to leave the accommodating chamber 11 and connect it to the end of the diffuser 21 away from the inlet of the combustion chamber 10; when external combustion is not required, the drive assembly drives the mixer 30 to be stored in the accommodating chamber 11, thereby reducing flow resistance, preventing the mixer 30 from being in a high-temperature environment for a long time, extending the life of the device, and enhancing its reliability.

[0039] In one embodiment, the drive assembly includes a drive motor, a connecting rod and a controller, wherein the drive end of the drive motor is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the mixer 30. The controller is electrically connected to the drive motor, and the controller inputs a control signal to the drive motor, and the drive motor drives the connecting rod to drive the mixer 30 to move to the end of the diffuser 21 away from the inlet of the combustion chamber 10, or to accommodate it in the accommodating chamber 11. The position of the drive assembly can be set according to the position of the diffuser 21. In one embodiment, the drive motor can move in the accommodating chamber 11 along the flow direction of the airflow in the combustion chamber 10 to adjust the position of the mixer 30 in the accommodating chamber 11, or to adapt the mixer 30 to the diffuser 21 after the mixer 30 is moved out of the accommodating chamber 11. It should be noted that after the mixer 30 is connected to the diffuser 21, the end of the connecting rod can be separated from the mixer 30 to avoid increasing resistance due to the presence of the connecting rod. If the connecting rod and the mixer 30 are connected by magnetic adsorption, they can be separated under the action of an external force.

[0040] In this embodiment of the present invention, the combustion chamber 10 is also equipped with an external fuel injection rod 60 for injecting fuel into the combustion chamber 10 when external fuel injection is required. A through-hole is provided at the bottom of the accommodating chamber 11. When external fuel injection is required, the external fuel injection rod 60 is sealedly inserted into the through-hole to inject fuel into the combustion chamber 10. In this case, the mixer 30 is located at the downstream end of the diffuser 21 to mix the airflow in the first flow channel with the fuel sprayed by the external fuel injection rod 60. When the external fuel injection rod 60 is no longer needed, it can be stored in the accommodating chamber 11 to reduce flow resistance and prevent it from being exposed to high temperatures for a long time.

[0041] In one embodiment, a driver is connected to the outer cannula spray rod 60 and can drive the outer cannula spray rod 60 to move up and down along the axis of the through-hole, so that the outer cannula spray rod 60 is inserted into the through-hole or stored in the accommodating cavity 11. It should be noted that when the outer cannula spray rod 60 is stored in the accommodating cavity 11, a blocking member can be used to block the through-hole, ensuring that the accommodating cavity 11 does not affect the airflow of the combustion chamber 10 in the absence of the outer cannula spray rod 60, while also preventing the airflow in the combustion chamber 10 from entering the accommodating cavity 11. Both the driver and the blocking member can be electrically connected to a controller, and control signals input by the controller provide precise control of the outer cannula spray rod 60 and the blocking member.

[0042] In another embodiment, the end of the outer culvert spray rod 60 is connected to the reel via a cable. The reel is connected to a controller for controlling the operation of the reel. When the outer culvert spray rod 60 needs to be stored in the accommodating chamber 11, the controller controls the reel to wind the cable. As the cable winds, the outer culvert spray rod 60 gradually enters the accommodating chamber 11 and is finally completely stored in the accommodating chamber 11. After the outer culvert spray rod 60 is stored in the accommodating chamber 11, a sealing member can be used for sealing. The controller controls the reel to rotate in the opposite direction, and the outer culvert spray rod 60 can be inserted into the through hole. It should be noted that when the outer culvert spray rod 60 is stored in the accommodating chamber, the position can be adjusted according to actual conditions, such as placing the outer culvert spray rod flat in the accommodating chamber 11.

[0043] Furthermore, the cover is connected to the controller. After the mixer 30 and the outer nozzle rod 60 move to the target position, the controller outputs a control signal to control the cover to move to the opening and seal the opening to prevent the airflow in the combustion chamber 10 from entering the accommodating cavity 11.

[0044] The embodiment of the present invention accommodates the mixer 30 and the outer nozzle rod 60 into the accommodating cavity. Compared with the prior art, it can greatly improve the flow capacity of the afterburner in the turbojet mode and reduce the flow resistance by about 2% according to model calculation.

[0045] The diffuser 21, support plate 22, and inner cone 23 in this embodiment of the present invention are integrally formed. Compared to the prior art, where the diffuser 21, support plate 22, and inner cone 23 are separately provided, this not only improves the compactness and strength of the structure, but also reduces interference between components and airflow separation, minimizing flow losses within the combustion chamber 10 and thus improving overall engine performance and reliability.

[0046] In the embodiment of the present invention, a cooling channel is provided in the support plate 22, and a cooling port 231 is provided on the inner cone 23. The cooling port 231 is connected to the inlet of the cooling channel to ensure that the cooling gas can smoothly enter the cooling channel. An air outlet is provided on the support plate 22, and the air outlet is connected to the outlet of the cooling channel to form a complete cooling circuit. The cooling port 231 is used to connect to the outlet of a cooling device, such as a nuclear-powered fan. The cooling gas is introduced by the nuclear-powered fan, and the cooling gas enters the cooling channel through the cooling port 231 to cool the support plate 22. After flowing through the cooling channel, the cooling gas is ejected from the air outlet, which not only achieves the purpose of cooling the support plate 22, but also increases the oxygen content around the support plate 22, which helps to improve the combustion effect.

[0047] Furthermore, there are multiple cooling ports 231, such as Figure 4As shown, the number of cooling ports 231 is two, but may also be three, six, or other numbers. The number of cooling channels is less than or equal to the number of cooling ports 231, and each cooling channel is connected to at least one cooling port 231. There are also multiple air outlets, each connected to an air outlet. Cooling gas can enter the cooling channels through the multiple cooling ports 231 for cooling, improving the cooling effect and also increasing the oxygen content around the support plate 22, making it more uniform.

[0048] The injection of cooling gas helps match the fuel concentration and increase the oxygen content around the fuel jet, thereby solving the oil-gas matching problem of aviation kerosene combustion in this low-oxygen, high-temperature environment. The cooling gas in the embodiment of the present invention not only improves the cooling effect, but also improves the penetration of the fuel jet. This structure enables the fuel to burn in a more optimal oxygen environment, improves combustion efficiency, reduces the emission of unburned hydrocarbons and nitrogen oxides, and further enhances the performance and environmental friendliness of the engine. In addition, the present invention can ensure that the support plate 22 and other high-temperature components are effectively cooled under extreme operating conditions by precisely controlling the flow rate and temperature of the cooling gas, thereby extending the service life of the engine and improving the overall reliability and safety of the engine.

[0049] Existing technologies typically use an external duct to cool components within the core. However, at high core flow rates, the pressure of the external duct is lower than that of the internal duct, making this cooling method ineffective. The present invention utilizes a core fan duct cooling mode, which can meet the requirements of any pressure differential between the internal and external ducts, thus adapting to the cooling needs of various operating conditions.

[0050] In the embodiment of the present invention, the diffuser 21 is provided with an oil inlet 211, and an oil injection port 221 is provided on the sidewall of the support plate 22. The oil inlet 211 is connected to the oil supply device via an oil pipe 40. The oil pipe 40 is inserted into the oil inlet 211 and communicates with the oil injection port 221. Under the action of the oil supply pressure, the fuel is injected into the combustion chamber 10 through the oil injection port 221 and rapidly atomized and burned by the airflow within the combustion chamber 10. It should be noted that an oil passage through which the oil supply pipe 40 passes is provided within the support plate 22. The oil passage is used to transport the fuel from the oil inlet 211 to the oil injection port 221. At least one cooling channel may be provided near the oil passage to cool the oil passage and the oil pipe 40 within it, thereby preventing deformation of the oil pipe 40 or coking of the fuel due to high temperatures.

[0051] In one embodiment, the air outlet is arranged near the fuel injection port 221. If the air outlet is arranged opposite to the fuel injection port 221, the cooled cooling air can directly contact the fuel sprayed from the fuel injection port 221, which helps to improve the atomization effect and combustion efficiency of the fuel, thereby improving the overall combustion effect.

[0052] like Figure 3 and Figure 4 As shown, the sidewall of the support plate 22 is provided with a first groove 222. The first groove 222 extends along the height of the support plate 22, with the axis of the first groove 222 perpendicular to the axis of the inlet of the combustion chamber 10. A fuel injection port 221 is provided on the sidewall of the first groove 222. Fuel ejected from the fuel injection port 221 forms a stable fuel-air mixture within the first groove 222, thereby stabilizing the flame. The first groove 222 also guides airflow and enhances mixing, further optimizing the combustion process. Furthermore, it helps reduce airflow disturbances within the combustion chamber 10, improving combustion stability and overall engine performance. In this case, an air outlet can be provided on the sidewall of the first groove 222, for example, with the air outlet positioned opposite the fuel injection port 221. In one embodiment, the first groove 222 is provided on opposite sides of the support plate 22, i.e., two first grooves 222 are provided on opposite sides of the support plate 22 along the flow direction of the airflow within the combustion chamber 10.

[0053] Furthermore, the top surface of the inner cone 23 is provided with a second groove 232. The first groove 222 is connected to the second groove 232, thereby forming a vortex backflow between the inner cone 23 and the support plate 22, which helps stabilize the flame and improve combustion efficiency. The connection between the first groove 222 and the second groove 232 allows the fuel to mix more thoroughly with the airflow after injection, thereby improving the completeness of fuel combustion, reducing airflow losses, and further improving the operating performance and reliability of the combustion chamber 10. In one embodiment, the top surface of the inner cone 23 is provided with two second grooves 232, which are located on opposite sides of the support plate 22 along the airflow direction, and each second groove 232 is connected to the corresponding first groove 222.

[0054] Furthermore, the bottom surface of the diffuser 21 is provided with a third groove (not shown). The third groove communicates with the first groove 222. Specifically, the third groove, first groove 222, and second groove 232 are sequentially connected. This creates a vortex recirculation between the diffuser 21, support plate 22, and inner cone 23, helping to stabilize the flame. In one embodiment, the bottom surface of the diffuser 21 is provided with two third grooves, located on opposite sides of the support plate 22 along the airflow direction, and each third groove communicates with a corresponding first groove 222.

[0055] When the first side of the mixer 30 is connected to the diffuser 21 , the mixer 30 is tilted downward along the first side toward the second side of the mixer 30 , which helps to mix the airflow in the first flow channel and the second flow channel.

[0056] Furthermore, the top surface of the mixer 30 is provided with a first diversion channel, which extends along the direction of the mixer 30 and is designed to guide the airflow within the first channel so that it can flow smoothly into the second end of the mixer 30. The bottom surface of the mixer 30 is provided with at least one second diversion channel, which also extends along the direction of the mixer 30. Multiple second diversion channels are spaced apart along the width of the mixer 30. The airflow within the second channel can be effectively guided and distributed to the multiple second diversion channels, so that it can be mixed with the airflow within the first diversion channel at the end of the mixer 30. When the external culvert spray bar 60 is spraying fuel, the airflow and fuel can be quickly mixed.

[0057] The first diversion flow channel is located between two adjacent first diversion flow channels. The airflow in the first flow channel flows along the first diversion flow channel, and the airflow in the second flow channel flows along the second diversion flow channel. At the end of the mixer 30, the two airflows meet and mix, thereby achieving efficient power enhancement and combustion optimization.

[0058] Inner cone 23 in this embodiment of the present invention includes a first guide portion 233 and a second guide portion 234. The first end of first guide portion 233 is connected to combustion chamber 10 and is located below the inlet of combustion chamber 10. The second end of first guide portion 233 is connected to one end of second guide portion 234, and the other end of second guide portion 234 is connected to the bottom inner wall surface of combustion chamber 10. A second groove 232 can be provided on the top surface of first guide portion 233.

[0059] In one embodiment, the second flow guide portion 234 has an arc-shaped structure. This arc-shaped structure can better guide the airflow, reduce airflow losses at turns, and improve airflow guidance efficiency. Arc-shaped structures generally have higher structural strength, can withstand high-temperature and high-pressure operating environments, and improve the durability of the inner cone 23. The arc-shaped design helps reduce airflow turbulence and separation, thereby reducing flow losses and improving the overall performance of the combustion chamber 10.

[0060] The first guide portion 233 includes a first guide plate and a second guide plate. The first end of the first guide plate is connected to the inner wall of the combustion chamber 10 and is located below the inlet of the combustion chamber 10. The top surface of the second guide plate is connected to the bottom surface of the support plate 22. One end of the second guide plate is connected to the second end of the first guide plate, and the other end of the second guide plate is connected to the second guide portion 234. In one embodiment, the first end of the first guide plate is tilted upward toward the second guide plate.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A component capable of concealing an afterburner, characterized in that: include: A combustion chamber, wherein the inner wall surface of the combustion chamber is provided with an accommodating cavity; A diffuser, a support plate, and an inner cone are provided in the combustion chamber, wherein the diffuser is provided on the top surface of the support plate and forms a first flow channel with the top surface of the combustion chamber; the inner cone is provided on the bottom surface of the support plate and forms a second flow channel with the bottom surface of the diffuser; The first flow channel and the second flow channel are respectively communicated with the inlet of the combustion chamber; A mixer and a drive assembly, wherein the drive assembly is connected to the mixer and is used to drive the mixer to be connected to the end of the diffuser away from the combustion chamber inlet, or to drive the mixer to be accommodated in the accommodating cavity.

2. The component of claim 1, wherein the recessive afterburner is characterized in that: The driving assembly includes a driving motor, a connecting rod and a controller. The driving end of the driving motor is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the mixer. The controller is electrically connected to the driving motor and is used to control the driving motor to drive the connecting rod to drive the mixer to move.

3. The component-type stealth afterburner according to claim 2, characterized in that: It comprises an outer culvert spray rod, a through hole is provided at the bottom of the accommodating cavity, and the outer culvert spray rod can be received in the accommodating cavity or inserted into the through hole to spray oil into the combustion chamber.

4. The component-type stealth afterburner according to claim 3, characterized in that: An opening is provided at the bottom of the accommodating chamber, and a cover plate is provided at the opening. The cover plate is connected to the controller. After the mixer and the outer culvert spray rod are placed at the target position, the cover plate covers the opening.

5. The component-type stealth afterburner according to claim 1, characterized in that: The diffuser, the support plate and the inner cone are integrally formed parts.

6. The component-type stealth afterburner according to claim 1, characterized in that: A cooling channel is provided in the support plate, a cooling port is provided in the inner cone, and an air outlet is provided on the support plate. The cooling port and the air outlet are respectively communicated with the cooling channel, and the cooling port is used to communicate with the outlet of the cooling device.

7. The component-type stealth afterburner according to claim 1, characterized in that: The diffuser is provided with an oil inlet, and the side wall of the support plate is provided with an oil injection port, and the oil inlet is communicated with the oil injection port.

8. The component-type stealth afterburner according to claim 7, characterized in that: The side wall of the support plate is provided with a first groove, which extends along the height direction of the support plate. The axis of the first groove is perpendicular to the axis of the combustion chamber inlet, and the fuel injection port is provided on the side wall of the first groove.

9. The component-type stealth afterburner according to claim 8, characterized in that: A second groove is provided on the top surface of the inner cone, and the first groove is communicated with the second groove.

10. The component-type stealth afterburner according to claim 1, characterized in that: The diffuser is connected to a first side of the mixer, and the mixer is arranged to be tilted downward along the first side of the mixer toward the second side of the mixer; And / or, a first drainage channel is provided on the top surface of the mixer, and a second drainage channel is provided on the bottom surface of the mixer, and both the first drainage channel and the second drainage channel are extended along the extension direction of the mixer.

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