A high power-to-weight ratio micro turbojet engine with an integrated starting system

Abstract

The present application relates to an integrated starter system for a micro turbojet engine with a high power-to-weight ratio, comprising a starter generator, a turbojet engine, a main oil circuit, and a branch oil circuit. The starter generator comprises a first housing and a rotor, with both ends of the rotor rotatably connected to the first housing via a first bearing and a second end. The turbojet engine comprises a second housing and a main shaft, with both ends of the main shaft rotatably connected to the second housing via a third bearing and a fourth bearing. The rotor is connected to the first end of the main shaft via a coupling. The first output port of the main oil circuit is connected to the fourth bearing. The branch oil circuit is connected to the second output port of the main oil circuit, the third output port of the branch oil circuit is connected to the first bearing, the fourth output port of the branch oil circuit is connected to the third bearing, and the fifth output port of the branch oil circuit is connected to the fourth bearing. The present application can increase the service life of the bearings to meet the needs of long-term continuous high-power power generation of micro turbojet engines with higher speeds.

Description

Technical Field

[0001] The present application belongs to the technical field of turbojet engines, and specifically relates to an integrated starting system for a micro turbojet engine with a high power-to-weight ratio. Background Art

[0002] In recent years, with the widespread adoption of drones and small aircraft in both the civilian and military sectors, demand for micro-turbojet engines, a common power system, has continued to increase. Civilian drones are widely used in agriculture, environmental monitoring, logistics, and other fields. At the same time, modern unmanned aerial vehicles (UAVs) emphasize high concealment, maneuverability, and the ability to perform diverse combat missions, all of which place higher demands on the performance and stability of their power systems.

[0003] Currently, the integrated starting systems of micro turbojet engines on the market are generally limited by speed and are only used for small and medium-sized turbojet engines with relatively low speeds. Due to the influence of bearings, they are generally unable to meet the needs of long-term continuous high-power power generation for micro turbojet engines with higher speeds. Summary of the Invention

[0004] The present application provides an integrated starting and starting system for a micro turbojet engine with a high power-to-weight ratio, which aims to at least to some extent solve the need for micro turbojet engines with higher speeds to meet their demand for long-term continuous high-power power generation.

[0005] This application is implemented through the following technical solutions:

[0006] A starting and generating integrated system for a high power-to-weight ratio micro turbojet engine comprises: a starting and generating apparatus comprising a first housing and a rotor, the rotor having a first end and a second end, the first end of the rotor being rotatably connected to the first housing via a first bearing, and the second end of the rotor being rotatably passed through the first housing via a second bearing; a turbojet engine comprising a second housing and a main shaft, the main shaft having a first end and a second end, the first end of the main shaft being rotatably connected to the second housing via a third bearing, the second end of the main shaft being rotatably connected to the second housing via a fourth bearing, and the second end of the rotor being connected to the first end of the main shaft via a coupling; a main oil circuit having a first output port and a second output port, the first output port being connected to the fourth bearing; a branch oil circuit having a third output port, a fourth output port and a fifth output port, the branch oil circuit being connected to the second output port, the third output port being connected to the first bearing, the fourth output port being connected to the third bearing, and the fifth output port being connected to the fourth bearing.

[0007] The present application provides an integrated starting system for a high power-to-weight ratio micro turbojet engine. Since the starting generator includes a first housing and a rotor, the rotor has a first end and a second end, the first end of the rotor is rotatably connected to the first housing through a first bearing, and the second end of the rotor is rotatably passed through the first housing through a second bearing. Therefore, the rotor can rotate in the first housing through the first bearing and the second bearing; since the turbojet engine includes a second housing and a main shaft, the main shaft has a first end and a second end, the first end of the main shaft is rotatably connected to the second housing through a third bearing, the second end of the main shaft is rotatably connected to the second housing through a fourth bearing, and the second end of the rotor is connected to the first end of the main shaft through a coupling; therefore, under the drive of the rotor, the main shaft rotates synchronously to start the engine. Since the main oil circuit has a first output port and a second output port, and the first output port is connected to the fourth bearing, the lubricating oil can be delivered to the fourth bearing through the first output port to lubricate the fourth bearing; since the branch oil circuit has a third output port, a fourth output port and a fifth output port, and the branch oil circuit is connected to the second output port, the lubricating oil can be delivered to the branch oil circuit through the second output port. Since the third output port is connected to the first bearing, the fourth output port is connected to the third bearing, and the fifth output port is connected to the fourth bearing, the lubricating oil can enter the first bearing, the third bearing and the fourth bearing, thereby increasing the service life of the bearings to meet the needs of long-term continuous high-power power generation of micro turbojet engines with higher speeds.

[0008] In some embodiments, the power generation system further includes: a heat dissipation fan, disposed between the first shell and the second shell and connected to the second end of the rotor, with an output end of the heat dissipation fan facing the second bearing.

[0009] In some embodiments, the power generation system further includes a heat dissipation assembly, which includes: a heat-conducting sleeve, which is sleeved on the outer wall of the first shell; a plurality of first heat sinks, which are connected to the outer peripheral surface of the heat-conducting sleeve along the circumference of the heat-conducting sleeve; a plurality of second heat sinks, which are arranged in a one-to-one correspondence with the first heat sinks, and the second heat sinks are slidably connected to the corresponding first heat sinks; a temperature sensor, which is arranged on one of the first heat sinks; wherein, when the temperature sensor confirms that the temperature of the first heat sink does not exceed the set temperature, the second heat sink is stacked on the corresponding first heat sink, and the heat dissipation assembly is in the first mode; when the temperature sensor confirms that the temperature of the first heat sink exceeds the set temperature, at least a portion of the second heat sink extends out of the corresponding first heat sink, and the heat dissipation assembly is in the second mode.

[0010] In some embodiments, the first heat sink has a first side and a second side opposite to each other, the first side of the first heat sink is connected to the outer peripheral surface of the thermal sleeve, and the second side of the first heat sink is provided with a notch; at least a portion of the second heat sink is provided in the first heat sink, and the second heat sink can protrude from the second side of the first heat sink through the notch.

[0011] In some embodiments, the heat dissipation assembly further includes: a pressure pump connected to the first shell; a plurality of oil pipes arranged at circumferential intervals around the thermal sleeve, one end of the oil pipe being connected to the pressure pump, and the other end of the oil pipe being connected to the interior of the thermal sleeve, and the interior of the thermal sleeve being connected to the interior of the plurality of first heat sinks.

[0012] In some embodiments, the first heat sink and the second heat sink are both arc-shaped, and the first heat sink and the second heat sink are coaxial with the thermal sleeve.

[0013] In some embodiments, the heat dissipation assembly further includes: a slider, which is arranged in a one-to-one correspondence with the second heat sink, and the slider is connected to the side of the second heat sink; a fixing sleeve, which is connected to the end of the slider, and the side of the fixing sleeve is provided with an opening; a rotating shaft, which is rotatably connected to the fixing sleeve; and a toggle plate, one side of which is connected to the rotating shaft, and the other side passes through the opening to protrude from the fixing sleeve.

[0014] In some embodiments, the slider is elastically connected to the corresponding second heat sink.

[0015] In some embodiments, the heat dissipation assembly further includes: a counterweight block, connected to the toggle plate and located on the side of the second heat sink facing the thermal sleeve; a fixed block, arranged in one-to-one correspondence with the second heat sink, and along the axial direction of the thermal sleeve, the fixed block and the fixed sleeve are respectively connected to the two ends of the slider; a pull rope, one end of which is connected to the fixed block and the other end is connected to the toggle plate.

[0016] In some embodiments, when the heat dissipation assembly switches between the first mode and the second mode, the second heat sink moves back and forth on the adjacent first heat sink; the heat dissipation assembly also includes a plurality of brush bars connected to the inner side of the slider, and the plurality of brush bars are located on the same side of the pull rope and abut against the pull rope, so that the plurality of brush bars clean the adjacent first heat sink during the process of switching the heat dissipation assembly between the first mode and the second mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A cross-sectional view of the structure of a starting and launching integrated system for a micro turbojet engine with a high power-to-weight ratio in one or more embodiments of the present application is shown;

[0019] Figure 2 Shown Figure 1 A structural cross-sectional view of the generator 10;

[0020] Figure 3 A schematic structural diagram of an induction motor having a heat dissipation assembly 70 in some embodiments is shown;

[0021] Figure 4 Shown Figure 3 A structural diagram from another perspective;

[0022] Figure 5 Shown Figure 3 and Figure 4 A schematic structural diagram of the heat dissipation assembly 70;

[0023] Figure 6 Shown Figure 3 Explosion diagram of

[0024] Figure 7 A schematic diagram showing the switching of the heat dissipation component between the first mode and the second mode is shown;

[0025] Figure 8 A schematic diagram showing the connection between the pressure pump 750 and a plurality of oil delivery pipes 760 is shown;

[0026] Figure 9 shows a partial schematic diagram of the heat dissipation assembly 70;

[0027] Figure 10 Shown Figure 10 A magnified schematic diagram of .

[0028] Description of reference numerals:

[0029] Starter-10;

[0030] First housing 110, rotor 120; first bearing 130; second bearing 140; 150-stator; 160-skin.

[0031] Engine-20;

[0032] Second housing 210; main shaft 220; third bearing 230; fourth bearing 240;

[0033] Main oil line-30;

[0034] Branch oil line-40;

[0035] Coupling-50;

[0036] Cooling fan-60;

[0037] Heat dissipation component-70;

[0038] Thermal sleeve 710; first heat sink 720; second heat sink 730; temperature sensor 740; pressure pump 750; oil pipe 760; support 761; slider 770; fixing sleeve 780; rotating shaft 790; toggle plate 7100; counterweight 7110; fixing block 7120; pull rope 7130; brush strip 7140. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to understand the present application more clearly, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of this application.

[0040] Figure 1 A cross-sectional view of the structure of a high power-to-weight ratio micro turbojet engine integrated system in one or more embodiments of the present application is shown. Figure 2 Shown Figure 1 The structural cross-sectional view of the generator 10 in FIG. Figure 1 as well as Figure 2The present application provides a high power-to-weight ratio micro-turbojet engine integrated starter system comprising a generator 10 and an engine 20. The generator 10 comprises a first housing 110 and a rotor 120. The rotor 120 has a first end and a second end. The first end of the rotor 120 is rotatably connected to the first housing 110 via a first bearing 130. The second end of the rotor 120 is rotatably passed through the first housing 110 via a second bearing 140. The turbojet engine 20 comprises a second housing 210 and a main shaft 220. The main shaft 220 has a first end and a second end. The first end of the main shaft 220 is rotatably passed through the third bearing 230. 0 is rotatably connected to the second housing 210, the second end of the main shaft 220 is rotatably connected to the second housing 210 via the fourth bearing 240, and the second end of the rotor 120 is connected to the first end of the main shaft 220 via the coupling 50; the main oil circuit 30 has a first output port and a second output port, and the first output port is connected to the fourth bearing 240; the branch oil circuit 40 has a third output port, a fourth output port and a fifth output port, and the branch oil circuit 40 is connected to the second output port, the third output port is connected to the first bearing 130, the fourth output port is connected to the third bearing 230, and the fifth output port is connected to the fourth bearing 240.

[0041] The present application provides a starter-generator integrated system for a high power-to-weight ratio micro turbojet engine. Since the starter-generator 10 includes a first housing 110 and a rotor 120, the rotor 120 has a first end and a second end, the first end of the rotor 120 is rotatably connected to the first housing 110 through a first bearing 130, and the second end of the rotor 120 is rotatably passed through the first housing 110 through a second bearing 140. Therefore, the rotor 120 can rotate within the first housing 110 through the first bearing 130 and the second bearing 140; since the turbojet engine 20 includes a second housing 210 and a main shaft 220, the main shaft 220 has a first end and a second end, the first end of the main shaft 220 is rotatably connected to the second housing 210 through a third bearing 230, the second end of the main shaft 220 is rotatably connected to the second housing 210 through a fourth bearing 240, and the second end of the rotor 120 is connected to the first end of the main shaft 220 through a coupling 50; therefore, under the drive of the rotor 120, the main shaft 220 rotates synchronously to start the engine 20. Since the main oil passage 30 has a first output port and a second output port, the first output port is connected to the fourth bearing 240, Figure 1 In the direction of the arrow shown, the lubricating oil can be delivered to the fourth bearing 240 through the first output port to lubricate the fourth bearing 240; since the branch oil circuit 40 has a third output port, a fourth output port and a fifth output port, the branch oil circuit 40 is connected to the second output port, and the lubricating oil can be delivered to the branch oil circuit 40 through the second output port. Since the third output port is connected to the first bearing 130, the fourth output port is connected to the third bearing 230, and the fifth output port is connected to the fourth bearing 240, Figure 1In the direction of the arrow shown, the lubricating oil can enter the first bearing 130, the third bearing 230 and the fourth bearing 240, thereby increasing the service life of the bearings to meet the needs of long-term continuous high-power power generation of the micro turbojet engine 20 with a higher speed.

[0042] The first bearing 130 , the second bearing 140 , the third bearing 230 and the fourth bearing 240 in this application all use high-speed turbojet bearings to meet the requirements of high torque and high power generation, and can generate high power for a long time.

[0043] Combine Figure 2 In addition to the first housing 110 and rotor 120, the generator 10 also includes a stator 150 and a fairing 160. This is conventional technology and will not be described in detail in this application. Furthermore, the second end of the rotor 120 can be connected to the first end of the main shaft 220 via a coupling 50 to achieve torque transmission. The main oil circuit 30 and the branch oil circuit 40 can be connected by means of the internal structure of the second housing 210.

[0044] Combine Figure 1 as well as Figure 2 In some embodiments, the power generation system further includes a heat dissipation fan 60, which is an axial flow fan. The heat dissipation fan 60 is disposed between the first housing 110 and the second housing 210 and connected to the second end of the rotor 120. The output end of the heat dissipation fan 60 is directed toward the second bearing 140 to dissipate heat from the second bearing 140. In other embodiments, the branch oil circuit 40 may further include a fifth output port, which is connected to the second bearing 140 to dissipate heat from the second bearing 140 and thereby increase the service life of the second bearing 140.

[0045] It should be noted that, while the power generation system includes the heat dissipation fan 60 , the fifth output port of the branch oil circuit 40 is connected to the second bearing 140 to further improve the heat dissipation effect of the second bearing 140 and increase the service life of the second bearing 140 .

[0046] The invention of the present application adopts the internal lubricating oil circuit system of the turbojet engine to dissipate heat / lubricate the starter generator. The starter generator adopts a mixed cooling method of air cooling + oil cooling to dissipate heat for the starter generator. The heat dissipation fan is placed behind the rotor of the starter generator, making full use of the negative pressure working condition at the front end of the micro turbojet engine inlet duct, making the flow smoother and more sufficient than the traditional heat dissipation method.

[0047] As the duration of continuous power generation increases, the service life of the generator 10 increases. The heat dissipation of the generator 10 is also the key to its stable operation. However, the heat dissipation method of the existing generator 10 relies on a fixed heat sink structure, usually using a vertical heat sink. This type of heat sink has many disadvantages:

[0048] On the one hand, upright heat sinks are often designed to be longer and larger to increase the contact area with air and improve heat dissipation efficiency. This makes the entire heat sink bulky and heavy, which greatly complicates the movement and transportation of the generator and increases manpower and material costs.

[0049] On the other hand, fixed heat sinks cannot flexibly adjust the heat dissipation area according to the actual temperature changes during generator operation. In the high-temperature operating environment of generator 10, the fixed heat dissipation area cannot meet the demand for rapid heat dissipation, resulting in delayed heat dissipation. When the generator temperature is lower, the oversized heat sink will continue to dissipate heat, resulting in energy waste. At the same time, an oversized heat sink may also interfere with the surrounding environment and personnel, such as taking up too much space, affecting equipment layout, and possibly causing accidental injuries to personnel due to the sharp edges of the heat sink.

[0050] Based on this, the present application provides a flexible heat dissipation component 70, which can dissipate heat from the generator 10 while flexibly adjusting the heating area according to the temperature of the generator 10 and reducing the impact on the staff.

[0051] Figure 3 Schematic diagram of the structure of the inspiration motor with the heat dissipation component 70 in some embodiments is shown. Figure 4 Shown Figure 3 A structural diagram from another perspective, Figure 5 Shown Figure 3 and Figure 4 A schematic structural diagram of the heat dissipation component 70, Figure 6 Shown Figure 3 Explosion diagram, Figure 7 Schematic diagram showing the switching of the heat dissipation component between the first mode and the second mode. Figure 3-Figure 7 The heat dissipation assembly 70 of the power generation system of the present application includes a thermally conductive sleeve 710, a first heat dissipation fin 720, a second heat dissipation fin 730 and a temperature sensor 740, wherein the thermally conductive sleeve 710 is sleeved on the outer wall of the first shell 110; a plurality of first heat dissipation fins 720 are connected to the outer peripheral surface of the thermally conductive sleeve 710 along the circumference of the thermally conductive sleeve 710; the second heat dissipation fins 730 and the first heat dissipation fins 720 are arranged in a one-to-one correspondence, and the second heat dissipation fins 730 are slidably connected to the corresponding first heat dissipation fins 720; the temperature sensor 740 is arranged on one of the first heat dissipation fins 720; wherein, when the temperature sensor 740 confirms that the temperature of the first heat dissipation fin 720 does not exceed the set temperature, the second heat dissipation fin 730 is stacked on the corresponding first heat dissipation fin 720, and the heat dissipation assembly 70 is in the first mode; when the temperature sensor 740 confirms that the temperature of the first heat dissipation fin 720 exceeds the set temperature, at least a portion of the second heat dissipation fin 730 extends out of the corresponding first heat dissipation fin 720, and the heat dissipation assembly 70 is in the second mode.

[0052] In specific implementation, when the generator 10 is working at high temperature, the heat is dissipated outward through the first heat sink 720 and the second heat sink 730 on the outer wall of the first shell 110. The first heat sink 720 and the second heat sink 730 of the present application are both arc-shaped and coaxially arranged with the heat conductive sleeve 710. Compared with traditional upright heat sinks, the first heat sink 720 and the second heat sink 730 can bend inward through the arc, thereby achieving a larger contact area with the air without extending too much outward and occupying too much space.

[0053] The temperature sensor 740 monitors the temperature of the first heat sink 720. When the temperature sensor 740 determines that the temperature of the first heat sink 720 exceeds a set temperature, the heat dissipation assembly 70 enters a second mode. The second heat sink 730 is pushed out from within the first heat sink 720, so that at least a portion of the second heat sink 730 extends beyond the corresponding first heat sink 720. The second heat sink 730 acts as an external extension of the first heat sink 720. This automatically expands the heat dissipation surface area of ​​the first heat sink 720 in high-temperature operating environments, dissipating heat more rapidly and improving the heat dissipation efficiency of the generator 10. If the temperature sensor 740 determines that the temperature of the first heat sink 720 does not exceed the set temperature, the second heat sink 730 is not pushed out, maintaining a static heat dissipation state, thereby reducing interference with the surrounding environment and personnel.

[0054] The present application uses a separate and retractable heat dissipation method of the second heat sink 730 and the first heat sink 720, which can ensure the heat dissipation effect without additionally lengthening the length of the first heat sink 720, thereby avoiding the problem of the heat sink being large and long, heavy, and difficult for workers to move and transport. In addition, the reason for the retraction of the second heat sink 730 is: when the heat is quickly dissipated after the second heat sink 730 is extended, the second heat sink 730 needs to return to the inside of the first heat sink 720 to absorb the high heat of the first heat sink 720, and then the second heat sink 730 is pushed out again to play a role in heat dissipation after absorbing heat. If the second heat sink 730 remains in the pushed-out state and stationary, it will cause the inside of the first heat sink 720 and the second heat sink 730 to be unable to contact each other, and the heat of the first heat sink 720 cannot be effectively conducted by the second heat sink 730, that is, the second heat sink 730 cannot efficiently share the heat dissipation function with the first heat sink 720. Therefore, the second heat sink 730 is continuously extended and retracted to achieve a balance between the second heat sink 730 absorbing heat and dissipating heat together with the first heat sink 720 to ensure stable and continuous heat dissipation.

[0055] In some embodiments, the first heat sink 720 has a first side and a second side that oppose each other. The first side of the first heat sink 720 is connected to the outer circumference of the thermal sleeve 710, and the second side of the first heat sink 720 is provided with a notch. The second heat sink 730 is at least partially disposed within the first heat sink 720, and the second heat sink 730 can protrude from the second side of the first heat sink 720 through the notch. In other words, based on real-time temperature data monitored by the temperature sensor 740, the second heat sink 730 can be retracted within the first heat sink 720 through the notch, or protrude from the first heat sink 720, ensuring that the heat dissipation assembly 70 can effectively dissipate heat from the generator 10 in both the first and second modes.

[0056] In some embodiments, the heat dissipation assembly 70 further includes a pressure pump 750 and a plurality of oil delivery pipes 760. Figure 8 FIG. 7 shows a schematic diagram of the connection between the pressure pump 750 and a plurality of oil delivery pipes 760. Figure 8 A pressure pump 750 is connected to the first housing 110. A plurality of oil delivery pipes 760 are spaced apart around the circumference of the thermal sleeve 710. One end of each oil delivery pipe 760 is connected to the pressure pump 750, while the other end of each oil delivery pipe 760 communicates with the interior of the thermal sleeve 710. The interior of the thermal sleeve 710 is then connected to the interiors of the plurality of first heat sinks 720. The pressure pump 750 includes a built-in processor for communicating with the temperature sensor 740. Specifically, the temperature sensor 740 transmits the monitored temperature information to the pressure pump 750 in real time, and is processed by the processor inside the pressure pump 750. When the temperature information received by the processor is greater than the threshold, the processor sends an instruction to start the pressure pump 750. After the pressure pump 750 is started, the hydraulic oil inside is continuously pressed outward through the oil pipe 760 into the thermal sleeve 710, and is dispersed from the inner wall of the thermal sleeve 710 to the inside of each first heat sink 720 on the outer wall of the thermal sleeve 710, thereby pushing out the second heat sink 730 inside the first heat sink 720 through the hydraulic oil, thereby realizing the continuous pushing out and retraction of the second heat sink 730.

[0057] Combine Figure 8 In some embodiments, the oil pipe 760 has a support portion 761, which is supported on the outer circumference of at least one of the first shell 110 or the heat-conducting sleeve 710, so as to limit the shape of the oil pipe 760 through the support portion 761, thereby ensuring that the oil pipe 760 is not easily deformed and allowing the heat dissipation assembly 70 to operate normally.

[0058] In the above embodiment, if heat is dissipated only by natural convection or forced convection between the heat sink and the air, there will be some disadvantages:

[0059] On the one hand, when the heat sink is exposed to the air for a long time, a large amount of particles such as dust and fibers will gradually adhere to its surface. These particles will not only cover the surface of the heat sink, reducing the contact area between the heat sink and the air and affecting the heat exchange efficiency, but some easily meltable substances will melt and adhere to the heat sink after falling on it, further hindering the dissipation of heat and significantly reducing the cooling effect.

[0060] On the other hand, during the heat dissipation process, the air flow between the heat sinks is insufficient and inefficient. Due to the fixed structure of the heat sinks, the direction and speed of air flow between the heat sinks are difficult to effectively control, which can easily lead to local air stagnation and prevent the timely discharge of heat. Especially in the case of some heat sinks arranged relatively closely, it is difficult for air to form an effective flow in the gaps between the heat sinks, which greatly reduces the heat dissipation effect. In addition, the heat dissipation assembly 70 lacks a coordinated design for heat sink surface cleaning and air flow optimization, and cannot fundamentally solve the problem of low heat dissipation efficiency under long-term high-power operation.

[0061] Figure 9 shows a partial schematic diagram of the heat dissipation assembly 70, Figure 10 Shown Figure 9 A magnified schematic diagram of the combined Figure 9 as well as Figure 10 Based on the above analysis, the heat dissipation assembly 70 provided in the present application also includes a slider 770, a fixing sleeve 780, a rotating shaft 790 and a toggle plate 7100. The slider 770 and the second heat sink 730 are arranged in a one-to-one correspondence. The slider 770 is connected to the side of the second heat sink 730 protruding from the first heat sink 720. The fixing sleeve 780 is connected to the end of the slider 770, and an opening is provided on the side of the fixing sleeve 780; the rotating shaft 790 is rotatably connected to the fixing sleeve 780; one side of the toggle plate 7100 is connected to the rotating shaft 790, and the other side is through the opening to protrude from the fixing sleeve 780. When the second heat sink 730 reciprocates and expands, the slider 770 and the rotating shaft 790 drive the toggle plate 7100 to move synchronously, and the toggle plate 7100 to toggle the air, thereby toggling the air in the gap between each first heat sink 720 and the second heat sink 730 to be discharged outward, thereby improving the heat dissipation efficiency of the gap between the first heat sink 720 and the second heat sink 720, thereby improving the heat dissipation effect.

[0062] Combine Figure 9 as well as Figure 10In some embodiments, the heat dissipation assembly 70 further includes a counterweight block 7110 and a fixed block 7120. The counterweight block 7110 is connected to the toggle plate 7100 and is located on the side of the second heat sink 730 facing the heat conduction sleeve 710. The fixed block 7120 and the second heat sink 730 are arranged in a one-to-one correspondence. Along the axial direction of the heat conduction sleeve 710, the fixed block 7120 and the fixed sleeve 780 are respectively connected to the two ends of the slider 770. One end of the pull rope 7130 is connected to the fixed block 7120, and the other end is connected to the toggle plate 7100. By configuring the block 7110, the toggle plate 7100 can fan the inside of the first heat sink 720 and the second heat sink 730, thereby toggling the air in the gap between each of the first heat sink 720 and the second heat sink 730 to be discharged outward, thereby improving the heat dissipation efficiency of the gap between the first heat sink 720 and the second heat sink 730, and will not toggle the hot air back, ensuring the unidirectional flow of air, so that the air that is difficult to dissipate between each arc-shaped first heat sink 720 and the second heat sink 730 can be quickly discharged, thereby further improving the heat dissipation effect.

[0063] In some embodiments, the fixed block 7120 is further connected to the other end of the oil delivery pipe 760 to provide a more stable connection to the oil delivery pipe 760. The end of the slide away from the fixed block 7120 is provided with an arcuate groove, and the fixed sleeve 780 is also an arcuate sleeve, which is fixedly embedded in the arcuate groove. The rotating shaft 790 can be directly rotatably connected to the fixed sleeve 780 or rotatably connected to the fixed sleeve 780 via a bearing, which is not limited in this application.

[0064] In some embodiments, when the heat dissipation assembly 70 switches between the first mode and the second mode, the second heat sink 730 moves back and forth on the adjacent first heat sink 720; the heat dissipation assembly 70 also includes a plurality of brush strips 7140714 connected to the inner side of the slider 770, and the plurality of brush strips 7140714 are located on the same side of the pull rope 7130 and abut against the pull rope 7130, so that when the heat dissipation assembly 70 switches between the first mode and the second mode, the plurality of brush strips 7140714 clean the adjacent first heat sink 720. When the second heat sink 730 is pushed back and forth to extend and retract, the second heat sink 730 moves back and forth with the slider 770, and the slider 770 drives the brush bar 7140714 to brush the surface of the other adjacent first heat sink 720, pushing away the particles attached to the first heat sink 720 when it is exposed to the air for a long time to dissipate heat; at the same time, when the second heat sink 730 extends and reciprocates, the first heat sink 720 will clean the surface of the second heat sink 730, thereby avoiding some easily meltable substances falling on the first heat sink 720 and the second heat sink 730 to melt and adhere, affecting the heat dissipation effect of the second heat sink 730 and the first heat sink 720.

[0065] In some embodiments, the slider 770 is elastically connected to the corresponding second heat sink 730. Specifically, the side of the second heat sink 730 that protrudes from the first heat sink 720 is connected to the slider 770 via an elastic portion. This arrangement allows the slider 770 to vibrate as the second heat sink 730 drives the slider 770 and the paddle 7100 back and forth, leveraging its elasticity to further enhance the brushing effect of the brush strips 7140 and 714, and the air flow generated by the paddle 7100.

[0066] In addition, when the toggle plate 7100 is toggled, the pull rope 7130 can be pulled to swing, and the pull rope 7130 can push the brush bar 7140714. When the brush bar 7140714 is pushed and deformed, the stains attached to its surface due to cleaning will fall off with the deformation, and the vibration of the push will be used to shake it off, thereby reducing the problem of residue adhesion, improving the cleaning effect, and having good practicality.

[0067] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0068] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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, and therefore should not be understood as a limitation on the present application.

[0069] In this application, unless otherwise specified or limited, the terms "connect," "fix," etc. should be understood broadly. For example, "fix" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0070] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0071] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A high power-to-weight ratio micro turbojet engine with an integrated starting system, characterized in that: include: The generator comprises a first housing and a rotor, wherein the rotor has a first end and a second end, the first end of the rotor being rotatably connected to the first housing via a first bearing, and the second end of the rotor being rotatably passed through the first housing via a second bearing; A turbojet engine comprising a second housing and a main shaft, the main shaft having a first end and a second end, the first end of the main shaft being rotatably connected to the second housing via a third bearing, the second end of the main shaft being rotatably connected to the second housing via a fourth bearing, and the second end of the rotor being connected to the first end of the main shaft via a coupling; A main oil circuit having a first output port and a second output port, wherein the first output port is connected to the fourth bearing; a branch oil circuit having a third output port, a fourth output port, and a fifth output port, wherein the branch oil circuit is connected to the second output port, the third output port is connected to the first bearing, the fourth output port is connected to the third bearing, and the fifth output port is connected to the fourth bearing; Also included is a heat dissipation component, the heat dissipation component comprising: a heat-conducting sleeve, sleeved on the outer wall of the first shell; a plurality of first heat sinks connected to the outer peripheral surface of the heat conductive sleeve along the circumference of the heat conductive sleeve; A plurality of second heat sinks are provided corresponding to the first heat sinks one by one, and the second heat sinks are slidably connected to the corresponding first heat sinks; A temperature sensor is provided on one of the first heat sinks; wherein, When the temperature sensor confirms that the temperature of the first heat sink does not exceed the set temperature, the second heat sink is stacked on the corresponding first heat sink, and the heat dissipation assembly is in the first mode; When the temperature sensor confirms that the temperature of the first heat sink exceeds a set temperature, at least a portion of the second heat sink extends out of the corresponding first heat sink, and the heat dissipation assembly is in the second mode.

2. The high power-to-weight ratio micro turbojet engine starting and starting integrated system according to claim 1, characterized in that: Also includes: A heat dissipation fan is provided between the first shell and the second shell and connected to the second end of the rotor, and an output end of the heat dissipation fan faces the second bearing.

3. The high power-to-weight ratio micro turbojet engine starting and starting integrated system according to claim 1, characterized in that: The first heat sink has a first side and a second side opposite to each other, the first side of the first heat sink is connected to the outer peripheral surface of the heat conductive sleeve, and the second side of the first heat sink is provided with a notch; At least a portion of the second heat sink is disposed within the first heat sink, and the second heat sink can protrude from the second side of the first heat sink through the notch.

4. The high power-to-weight ratio micro turbojet engine starting and starting integrated system according to claim 3, characterized in that: The heat dissipation component further includes: a pressure pump connected to the first housing; A plurality of oil delivery pipes are arranged at intervals around the circumference of the heat-conducting sleeve, one end of the oil delivery pipe is connected to the pressure pump, and the other end of the oil delivery pipe is connected to the interior of the heat-conducting sleeve, and the interior of the heat-conducting sleeve is connected to the interior of the plurality of first heat sinks.

5. The high power-to-weight ratio micro turbojet engine starting and starting integrated system according to claim 1, characterized in that: The first heat sink and the second heat sink are both arc-shaped, and the first heat sink and the second heat sink are coaxial with the heat-conducting sleeve.

6. The high power-to-weight ratio micro turbojet engine starting and starting integrated system according to claim 1, characterized in that: The heat dissipation component further includes: a slider, provided in one-to-one correspondence with the second heat sink, the slider being connected to a side portion of the second heat sink; A fixing sleeve connected to the end of the slider, wherein the side of the fixing sleeve is provided with an opening; A rotating shaft, rotatably connected to the fixed sleeve; A toggle plate has one side connected to the rotating shaft and the other side passing through the opening to protrude from the fixing sleeve.

7. The high power-to-weight ratio micro turbojet engine starting and starting integrated system according to claim 6, characterized in that: The slider is elastically connected to the corresponding second heat sink.

8. The high power-to-weight ratio micro turbojet engine starting and starting integrated system according to claim 6, characterized in that: The heat dissipation component further includes: a counterweight block connected to the toggle plate and located on a side of the second heat sink facing the heat-conducting sleeve; A fixed block is provided in one-to-one correspondence with the second heat sink, and along the axial direction of the heat-conducting sleeve, the fixed block and the fixed sleeve are respectively connected to two ends of the slider; A pull rope has one end connected to the fixed block and the other end connected to the toggle plate.

9. A high power-to-weight ratio micro turbojet engine integrated starting system according to any one of claim 8, characterized in that: When the heat dissipation assembly switches between the first mode and the second mode, the second heat dissipation fin reciprocates on the adjacent first heat dissipation fin; The heat dissipation assembly further includes a plurality of brush strips connected to the inner side of the slider, wherein the plurality of brush strips are located on the same side of the pull rope and abut against the pull rope so that the plurality of brush strips clean the adjacent first heat sink during the switching of the heat dissipation assembly between the first mode and the second mode.

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