Afterburner with implicit component

Abstract

The invention relates to the technical field of aviation, and provides a component implicit afterburner which comprises a combustion chamber, a diffuser, a supporting plate, an inner cone, a mixer and a driving assembly, and the diffuser, the supporting plate, the inner cone, the mixer and the driving assembly are arranged in the combustion chamber; the diffuser is arranged on the top face of the supporting plate, and the diffuser and the top face of the combustion chamber form a first flow channel. 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 communicated with an inlet of the combustion chamber; the driving assembly is connected with the mixer and used for driving the mixer to be connected with the end, away from the inlet of the combustion chamber, of the diffuser or driving the mixer to be contained in the containing cavity, flow resistance is reduced, the mixer is prevented from being in a high-temperature environment for a long time, the service life of the mixer is prolonged, and reliability of the mixer is enhanced.

Description

Technical Field

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

[0002] Aircraft engines are the core power source of modern aircraft, and their performance indicators are directly related to the flight performance and efficiency of aircraft. As a key component of aircraft engines, the main function of the combustion chamber is to provide significant additional thrust in a short period of time to support high-demand operations such as takeoff, climb or supersonic flight. Although the combustion chamber plays an important role in improving engine performance, the traditional combustion chamber design still has several limitations.

[0003] In the existing combustion chamber design, in the turbojet mode, components such as the mixer and the 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 of concealed afterburner combustion chamber, so as to solve the problem in the prior art that in turbojet mode, a mixer is not applicable, is directly exposed to high-temperature airflow for a long time, 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 a containing 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 driving assembly, the driving assembly being connected to the mixer, and being used for driving the mixer to be connected to the end of the diffuser away from the inlet of the combustion chamber, or driving the mixer to be accommodated in the containing cavity.

[0006] According to a component provided by the present invention, a hidden afterburner combustion chamber is provided, wherein the driving assembly includes a driving motor, a connecting rod and a controller, wherein 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.

[0007] A component provided according to the present invention can implicitly boost a combustion chamber, including an outer culvert injection rod, a through hole is provided at the bottom of the accommodating cavity, and the outer culvert injection rod can be received in the accommodating cavity, or inserted in the through hole to spray oil into the combustion chamber.

[0008] According to a component provided by the present invention, a hidden afterburner combustion chamber is provided, the bottom of the accommodating cavity is provided with an opening, 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 at the target position, the cover plate covers the opening.

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

[0010] According to a component provided by the present invention, a hidden afterburner combustion chamber is provided, 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 hidden afterburner combustion chamber is provided, the diffuser is provided with an oil inlet, 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 a component provided by the present invention, a hidden afterburner combustion chamber is provided, the side wall of the support plate is provided with a first groove, the first groove is extended 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 connected to the second groove.

[0014] A component provided according to the present invention may be a hidden afterburner combustion chamber, wherein a first side of the mixer is connected to the diffuser, 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 both the first drainage channel and the second drainage channel are 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 driving component to the mixer. When external combustion is required, the driving component drives the mixer to leave the accommodating chamber and connect with the end of the diffuser away from the combustion chamber inlet; when external combustion is not required, the driving component drives the mixer to be accommodated in the accommodating chamber, 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, the following briefly introduces 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 creative work.

[0017] Figure 1 It is a schematic diagram of the structure in which the mixer and the outer culvert spray rod provided by the present invention are accommodated in the accommodating chamber; Figure 2 It is a structural schematic diagram of the mixer and the outer culvert spray rod provided by the present invention installed in the combustion chamber; Figure 3 It is a schematic diagram of the structure of an integrated assembly of the mixer provided by the present invention installed on the inner cone of the bleed air cooling and the support plate diffuser injection stabilizer; Figure 4 It is a schematic structural diagram of an integrated assembly of an inner cone for bleed air cooling and a support plate diffuser injection stabilizer provided by the present invention; Reference numerals: 10. Combustion chamber; 11. Accommodation chamber; 20. The integrated assembly of the inner cone and support plate diffuser for bleed air cooling and the fuel injection stabilizer; 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; 30. Mixer; 40. Oil pipe; 50. Drive assembly; 60. External fuel injection rod. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0020] 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" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] Embodiments of the present invention are described in detail below, 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 should not be construed as limiting the present invention.

[0023] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific processes and examples of materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0024] Combine the following Figure 1-Figure 4 The components of the present invention may be described as implicit afterburners.

[0025] The component provided in the embodiment of the present invention can be a hidden afterburner combustion chamber, including 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 50. An accommodating cavity 11 is provided on the inner wall surface of the combustion chamber 10. Figure 1 and Figure 2As shown, a boss is provided on the inner wall surface of the top of the combustion chamber 10, and a receiving cavity 11 is provided in the boss. The integrated assembly 20 of the inner cone and support plate diffuser injection stabilizer for bleed air cooling includes a diffuser 21, a support plate 22, and an inner cone 23. The diffuser 21, the support plate 22, and the inner cone 23 are arranged in the combustion chamber 10. Figure 4 As shown, the diffuser 21 is arranged on the top surface of the support plate 22, and the extension direction of the diffuser 21 is consistent with the flow direction of the airflow in the combustion chamber 10, and forms a first flow channel with the top surface of the combustion chamber 10. The diffuser 21 decelerates the high-speed intake airflow and increases the pressure of the airflow, thereby providing suitable airflow conditions for the subsequent combustion process. In one embodiment, the diffuser 21 includes a first diffuser plate, a second diffuser plate and a third diffuser plate, and the first diffuser plate, the second diffuser plate and the third diffuser plate are connected in sequence. 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 arranged upwardly tilted along the direction from the first diffuser plate to the third diffuser plate, thereby achieving deceleration of the intake airflow. The inner cone 23 is arranged on the bottom surface of the support plate 22, and the extension direction of the inner cone 23 is consistent with the flow direction of the airflow in the combustion chamber 10, and forms 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 the width of the support plate 22, and the width of the inner cone 23 is greater than the width of the support plate 22, that is, the airflow in the second flow channel can flow through both sides of the width direction of the support plate 22. The width direction of the support plate 22 is perpendicular to the flow direction of the fluid. The first flow channel and the second flow channel are respectively connected to the inlet of the combustion chamber 10, so that the airflow can be effectively distributed to the two flow channels.

[0026] 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.

[0027] The mixer 30 is arranged downstream of the diffuser 21 to promote the mixing of fuel and air, thereby optimizing the combustion process. In the turbojet mode, since there is no need for external combustion, the mixer 30 increases the flow resistance. At this time, the mixer 30 is exposed to the high-temperature airflow for a long time, which will affect its life and reliability.

[0028] Based on this, the embodiment of the present invention uses the driving assembly 50 to drive the mixer 30 to move and adjust the position of the mixer 30. Specifically, the driving assembly 50 is connected to the mixer 30, such as by gear transmission, hydraulic drive, electric drive, etc. In the case where external combustion is not required (such as turbojet mode), the driving assembly 50 drives the mixer 30 to be stored in the accommodating chamber 11 according to a preset path, such as Figure 1As 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 the 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 clamping portion is provided at the end of the mixer 30. When the mixer 30 moves to the end of the diffuser 21, the clamping portion is clamped in the matching portion to achieve the connection between the mixer 30 and the diffuser 21. In another embodiment, the connection can also be achieved by adsorption.

[0029] 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 to allow the mixer 30 to 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.

[0030] The component provided in the embodiment of the present invention can implicitly boost the combustion chamber by connecting the drive assembly 50 to the mixer 30. When external combustion is required, the drive assembly 50 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 50 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 mixer, and enhancing its reliability.

[0031] In one embodiment, the drive assembly 50 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 the storage chamber 11. The position of the drive assembly 50 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 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 the 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 external force.

[0032] In the embodiment of the present invention, the combustion chamber 10 is further provided with an outer culvert injection rod 60, which is used to inject fuel into the combustion chamber 10 when outer culvert injection is required. A through hole is provided at the bottom of the accommodating chamber 11. When outer culvert injection is required, the outer culvert injection rod 60 is sealed and inserted into the through hole to inject fuel into the combustion chamber 10. At this time, the mixer 30 is provided at the end downstream of the diffuser 21, and the airflow in the first flow channel can be mixed with the fuel sprayed by the outer culvert injection rod 60. When the outer culvert injection rod 60 is not needed, the outer culvert injection rod 60 can be stored in the accommodating chamber 11 to reduce flow resistance and prevent the outer culvert injection rod 60 from being exposed to a high temperature environment for a long time.

[0033] In one embodiment, the driving member is connected to the outer culvert spray rod 60, and the driving member can drive the outer culvert spray rod 60 to move up and down along the axis of the through hole, so that the outer culvert spray rod 60 is inserted into the through hole, or is received in the accommodating chamber 11. It should be noted that when the outer culvert spray rod 60 is received in the accommodating chamber 11, the through hole can be blocked by a blocking member to ensure that the accommodating chamber 11 does not affect the airflow of the combustion chamber 10 in the absence of the outer culvert spray rod 60, and prevent the airflow in the combustion chamber 10 from entering the accommodating chamber 11. Both the driving member and the blocking member can be electrically connected to the controller, and the outer culvert spray rod 60 and the blocking member can be precisely controlled by the control signal input by the controller.

[0034] In another embodiment, the end of the outer culvert spray rod 60 is connected to the roller via a cable. The roller is connected to a controller for controlling the operation of the roller. When the outer culvert spray rod 60 needs to be stored in the accommodating chamber 11, the controller controls the roller to wind the cable. As the cable is wound, 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 roller 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.

[0035] Furthermore, the cover plate is connected to the controller. After the mixer 30 and the outer fuel injection rod 60 move to the target position, the controller outputs a control signal to control the cover plate to move to the opening to seal the opening to prevent the airflow in the combustion chamber 10 from entering the accommodating cavity 11.

[0036] The embodiment of the present invention accommodates the mixer 30 and the outer fuel injection rod 60 in the accommodating chamber. Compared with the prior art, the flow capacity of the afterburner combustion chamber in the turbojet mode can be greatly improved, and the flow resistance can be reduced by about 2% according to model calculation.

[0037] The diffuser 21, the support plate 22 and the inner cone 23 in the embodiment of the present invention are integrally formed. Compared with the prior art in which the diffuser 21, the support plate 22 and the inner cone 23 are separately provided, not only the compactness and strength of the structure are improved, but also the interference between the components and the airflow separation phenomenon are reduced, and the flow loss in the combustion chamber 10 is reduced, thereby improving the performance and reliability of the overall engine.

[0038] 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. Among them, the cooling port 231 is used to be connected to the outlet of a cooling device, such as a nuclear power fan. The cooling gas is introduced by the nuclear power 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.

[0039] Furthermore, there are multiple cooling openings 231, such as Figure 4 As shown, the number of cooling ports 231 is 2, and may also be 3, 6, etc. 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. The number of air outlets is also multiple, and each cooling channel is connected to an air outlet. The cooling gas can enter the cooling channel through the multiple cooling ports 231 for cooling, thereby improving the cooling effect, and at the same time, the oxygen content around the support plate 22 can be increased and made more uniform.

[0040] The injection of cooling gas helps to 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 and 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 the combustion efficiency, reduces the emission of unburned hydrocarbons and nitrogen oxides, and further improves 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 working 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.

[0041] In the prior art, the outer duct airflow is usually used to cool the components in the hot core flow. However, under the condition of high flow rate of the hot core flow, the pressure of the outer duct airflow is less than that of the inner duct, so this cooling method cannot be used. The present invention adopts the core fan duct air cooling mode, which can meet the needs of any pressure difference between the inner and outer ducts and is suitable for the cooling needs of different working conditions.

[0042] The diffuser 21 in the embodiment of the present invention is provided with an oil inlet 211, and the side wall of the support plate 22 is provided with an oil injection port 221. The oil inlet 211 is connected to the oil supply device through 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 sprayed toward the combustion chamber 10 through the oil injection port 221, and is rapidly atomized and burned under the action of the airflow in the combustion chamber 10. It should be noted that an oil passage through which the oil supply pipe 40 passes is provided in the support plate 22, and 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 can be provided near the oil passage, and the oil passage and the oil pipe 40 inside can be cooled to prevent the oil pipe 40 from being deformed or the fuel from being coked due to high temperature.

[0043] In one embodiment, the air outlet is arranged close to 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.

[0044] like Figure 3 and Figure 4 As shown, the side wall of the support plate 22 is provided with a first groove 222, and the first groove 222 is extended along the height direction of the support plate 22, and the axis of the first groove 222 is perpendicular to the axis of the inlet of the combustion chamber 10. The fuel injection port 221 is provided on the side wall of the first groove 222, and the fuel injected by the fuel injection port 221 can form a stable oil-gas mixture in the first groove 222, thereby achieving the effect of stabilizing the flame. The first groove 222 can also play the role of guiding the airflow and enhancing the mixing, further optimizing the combustion process. In addition, it also helps to reduce the airflow disturbance in the combustion chamber 10, improve the stability of combustion and the overall performance of the engine. At this time, the air outlet can be provided on the side wall of the first groove 222, such as, the air outlet is arranged opposite to the fuel injection port 221. In one embodiment, the first grooves 222 are provided on opposite sides of the support plate 22, that is, along the flow direction of the airflow in the combustion chamber 10, the two first grooves 222 are respectively provided on opposite sides of the support plate 22.

[0045] Furthermore, the top surface of the inner cone 23 is also provided with a second groove 232, and the first groove 222 is connected to the second groove 232, so that a vortex backflow is formed between the inner cone 23 and the support plate 22, which helps to stabilize the flame and improve the combustion efficiency. The first groove 222 is connected to the second groove 232, and the fuel can be more fully mixed with the airflow after injection, thereby improving the completeness of fuel combustion; it can also reduce the flow loss of the airflow; and further improve the working 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, and the two second grooves 232 are respectively arranged on opposite sides of the support plate 22 along the airflow flow direction, and each second groove 232 is connected to the corresponding first groove 222.

[0046] Furthermore, the bottom surface of the diffuser 21 is further provided with a third groove (not shown in the figure), and the third groove is connected to the first groove 222, that is, the third groove, the first groove 222 and the second groove 232 are connected in sequence, so that a vortex reflow is formed between the diffuser 21, the support plate 22 and the inner cone 23, which is helpful to stabilize the flame. In one embodiment, the bottom surface of the diffuser 21 is provided with two third grooves, and the two third grooves are arranged on opposite sides of the support plate 22 along the airflow direction, and each third groove is connected to the corresponding first groove 222.

[0047] When the first side of the mixer 30 is connected to the diffuser 21 , the mixer 30 is tilted downward along the first side of the mixer 30 toward the second side of the mixer 30 , which helps to mix the airflows in the first flow channel and the second flow channel.

[0048] Furthermore, the top surface of the mixer 30 is provided with a first drainage channel, which is extended along the extension direction of the mixer 30, and is intended to guide the airflow in 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 a second drainage channel, which is also extended along the extension direction of the mixer 30. A plurality of second drainage channels are arranged at intervals along the width direction of the mixer 30, and the airflow in the second channel can be effectively guided and distributed to the plurality of second drainage channels so as to be mixed with the airflow in the first drainage channel at the end of the mixer 30. When the outer culvert spray rod 60 sprays oil, the airflow can be quickly mixed with the fuel.

[0049] 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.

[0050] The inner cone 23 in the embodiment of the present invention includes a first guide portion 233 and a second guide portion 234. The first end of the first guide portion 233 is connected to the combustion chamber 10 and is located below the inlet of the combustion chamber 10. The second end of the first guide portion 233 is connected to one end of the second guide portion 234, and the other end of the second guide portion 234 is connected to the bottom inner wall surface of the combustion chamber 10. The second groove 232 can be provided on the top surface of the first guide portion 233.

[0051] In one embodiment, the second guide portion 234 is an arc-shaped structure, which can better guide the airflow, reduce the loss of the airflow at the bend, and improve the airflow guidance efficiency. The arc-shaped structure usually has a higher structural strength, can withstand high temperature and high pressure working environment, and improve the durability of the inner cone 23. The arc-shaped design helps to reduce the turbulence and separation of the airflow, thereby reducing flow losses and improving the performance of the overall combustion chamber 10.

[0052] The first guide portion 233 includes a first guide plate and a second guide plate, wherein the first end of the first guide plate is connected to the inner wall surface 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 direction of the second guide plate.

[0053] 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 embodiments of the present invention.

Claims

1. A component capable of concealed afterburner combustion chamber, characterized in that: include: A combustion chamber, wherein the inner wall surface of the combustion chamber is provided with a receiving cavity; A diffuser, a support plate and an inner cone are arranged in the combustion chamber, wherein 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 communicated with the inlet of the combustion chamber; A mixer and a driving assembly, wherein the driving 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 can be a concealed afterburner, 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 of claim 2 can be a concealed afterburner, 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 in the through hole to spray oil into the combustion chamber.

4. The component of claim 3 can be a hidden afterburner combustion chamber, 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 of claim 1 can be a concealed afterburner, characterized in that: The diffuser, the support plate and the inner cone are an integrally formed part.

6. The component of claim 1 can be a concealed afterburner, characterized in that: 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 communicated with the cooling channel, and the cooling port is used to communicate with the outlet of the cooling device.

7. The component of claim 1 can be a concealed afterburner, 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 of claim 7 can be a concealed afterburner, characterized in that: The side wall of the support plate is provided with a first groove, the first groove is extended 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 of claim 8 can be a concealed afterburner, characterized in that: A second groove is disposed on the top surface of the inner cone, and the first groove is communicated with the second groove.

10. The component of claim 1 can be a concealed afterburner, characterized in that: The diffuser is connected to the 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 disposed on the top surface of the mixer, and a second drainage channel is disposed 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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