Unmanned aerial vehicle thermal management device

Abstract

The unmanned aerial vehicle heat management device comprises an air inlet pipe and a heat exchange module, the air inlet pipe comprises a pipe part and a bell mouth bend pipe, the bell mouth bend pipe has a first bend pipe end and an air outlet end, one end of the pipe part is connected with the first bend pipe end, the air outlet end is connected with the heat exchange module, the pipe part is located on one side of the heat exchange module, a plane parallel to the height direction of the unmanned aerial vehicle heat management device is defined as a plane, and the first bend pipe end and the air outlet end both face the plane. The application can improve the compactness of the unmanned aerial vehicle heat management device as a whole and reduce the occupied area.

Description

Technical Field

[0001] This application relates to the field of thermal management technology, and in particular to a thermal management device for unmanned aerial vehicles (UAVs). Background Technology

[0002] A drone thermal management device is a device used to cool the drone's charging equipment.

[0003] The related technology of the UAV thermal management device includes a fan, a heat exchange tube, an air inlet duct and a heat exchange module. One end of the heat exchange tube is connected to the air inlet of the fan and the other end of the heat exchange tube is connected to the air inlet duct. The heat exchange module is located at least partially inside the heat exchange tube. The heat exchange module cools or heats the air inside the heat exchange tube. The fan, heat exchange tube and air inlet duct are distributed in the same straight line direction.

[0004] Because current technologies involve fans, heat exchange tubes, and air inlet ducts distributed along the same straight line, the thermal management device for UAVs occupies a large area. In some special operating conditions, the thermal management device for UAVs needs to occupy as little area as possible. Therefore, how to reduce the footprint of the thermal management device for UAVs has become an urgent technical problem to be solved. Summary of the Invention

[0005] One objective of this application is to provide a thermal management device for unmanned aerial vehicles (UAVs) that can reduce the footprint of the UAV thermal management device.

[0006] The UAV thermal management device provided in this application includes an air inlet pipe and a heat exchange module. The air inlet pipe includes a pipe section and a diffuser bend. The diffuser bend has a first bend end and an air outlet end. One end of the pipe section is connected to the first bend end, and the air outlet end is connected to the heat exchange module. The pipe section is located on one side of the heat exchange module. A plane is defined as a surface parallel to the height direction of the UAV thermal management device. Both the first bend end and the air outlet end face the plane.

[0007] In this application, by having both the first bend end and the air outlet end facing the same plane, the pipe section and the heat exchange module are brought close together, thereby reducing the footprint of the UAV thermal management device. Attached Figure Description

[0008] Figure 1 This is a perspective view of the thermal management device for the unmanned aerial vehicle (UAV) of this application.

[0009] Figure 2 yes Figure 1 A 3D view of the other side of the thermal management device for the Chinese unmanned aerial vehicle.

[0010] Figure 3 yes Figure 1 A 3D view showing the centrifugal fan hidden behind the image.

[0011] Figure 4 yes Figure 3 A 3D view of the central air intake duct.

[0012] Figure 5 yes Figure 4 A three-dimensional sectional view of the central air inlet duct and a sectional view of the air inlet duct.

[0013] Figure 6 yes Figure 3 An exploded view of the first heat exchange tube body, used to show the air heat exchange components and evaporator inside the first heat exchange tube body.

[0014] Figure 7 yes Figure 6 A three-dimensional view on the other side of the middle.

[0015] Figure 8 yes Figure 6 A three-dimensional view of the first heat exchange tube.

[0016] Figure 9 yes Figure 8 A three-dimensional view of the other side of the first heat exchange tube.

[0017] Figure 10 yes Figure 6 A 3D view of the intermediate cooling pipe and the flow pipe.

[0018] Figure 11 yes Figure 10 A three-dimensional sectional view of the intermediate cooling pipe and the flow pipe.

[0019] Figure 12 yes Figure 1 A 3D view of the area behind the hidden blocking cover.

[0020] Figure 13 yes Figure 12 A 3D view of the central cooling component.

[0021] Figure 14 yes Figure 12 A 3D view of the intermediate condenser, air shroud, and condenser fan.

[0022] Figure 15 yes Figure 12 A 3D view on the other side.

[0023] Figure 16 yes Figure 15 A three-dimensional view of the centrifugal fan, extension tube, electric heater, and second heat exchange tube.

[0024] Figure 17 yes Figure 16 A three-dimensional sectional view.

[0025] Figure 18 yes Figure 16 Exploded view.

[0026] Figure 19 yes Figure 18 A perspective view of the second shell section.

[0027] Figure 20 yes Figure 18 Enlarged view of circle A in the middle.

[0028] Figure 21 yes Figure 1 The three-dimensional sectional view in the image is used to show the direction of airflow.

[0029] Figure 22 yes Figure 3 A three-dimensional sectional view. Detailed Implementation

[0030] The exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can be combined with each other.

[0031] like Figures 1 to 22 The image shows a drone thermal management device conforming to this application, which includes: a mounting plate 1, a circulation pipe assembly 2, and a heat exchange module 3 for heat exchange of circulating air in the circulation pipe assembly 2. The circulation pipe assembly 2 includes a fan 21, an air inlet pipe 22, and a heat exchange pipe 5. The circulation pipe assembly 2 has a circulation pipe inlet end 2232 and a circulation pipe outlet end 62. Both the circulation pipe inlet end 2232 and the circulation pipe outlet end 62 are connected to the drone charging device. The fan 21 draws air from the drone charging device into the heat exchange pipe 5 through the circulation pipe inlet end 2232. The heat exchange module 3 in the heat exchange pipe 5 performs heat exchange, and finally blows the air out of the circulation pipe outlet end 62 towards the drone charging device to achieve cooling or heating of the drone charging device.

[0032] In some implementations, the drone charging device has a sealed enclosure. Air is drawn in from the inner cavity of the sealed enclosure, and then cooled or heated air is blown back into the sealed enclosure, realizing air circulation at the drone charging device, cooling the drone charging device, and reducing the impact of external dust on the drone charging device.

[0033] In some embodiments, the drone charging device can also be exposed to the outside world. The air inlet 2232 and the air outlet 62 of the circulation pipe are both facing the drone charging device. The hot air around the drone charging device enters the heat exchange module 3 through the air inlet 2232 of the circulation pipe for heat exchange, and then blows it to the surface of the drone charging device through the air outlet 62 of the circulation pipe to cool the drone charging device.

[0034] Reference Figure 1 as well as Figure 2The UAV thermal management device has a longitudinal direction X, a lateral direction Y, and a vertical direction Z. The longitudinal direction X is parallel to the length direction of the mounting plate 1, the lateral direction Y is parallel to the width direction of the mounting plate 1, and the vertical direction Z is parallel to the thickness direction of the mounting plate 1.

[0035] Reference Figure 3 , Figure 4 as well as Figure 5 The air inlet pipe 22 has a circulation pipe inlet end 2232 and an outlet end 2222. The air inlet pipe 22 includes a pipe section 221, a diffuser bend 222 and an inlet bend 223. The continuous curve formed by the blowing direction B is located in the same plane, making the arrangement of the pipe section 221, the diffuser bend 222 and the inlet bend 223 more compact, further improving the modularity of the UAV thermal management device. The inlet bend 223 has a circulation pipe inlet end 2232 and a second bend end 2231. The mounting plate 1 has a first opening 13. The circulation pipe inlet end 2232 is fixedly connected to the mounting plate 1, and the circulation pipe inlet end 2232 is connected to the first opening 13. The circulation pipe inlet end 2232 is used to draw in air near the UAV charging device. The inlet bend 223 extends from the mounting plate 1 in the vertical direction Z and then bends and extends in the horizontal direction Y. The length direction of the pipe section 221 is parallel to the transverse direction Y. The pipe section 221 has a first pipe end 2211 and a second pipe end 2212. The first pipe end 2211 is sealed to the second bend end 2231. The inside of the pipe section 221 is connected to the inside of the inlet bend 223.

[0036] Reference Figure 3 , Figure 4 as well as Figure 5 The diffuser bend 222 has a first bend end 2221 and an air outlet end 2222. The first bend end 2221 is fixedly connected to the second pipe section end 2212. The air outlet end 2222 is located on the side of the pipe section 221 away from the mounting plate 1. The first bend end 2221 and the air outlet end 2222 both face the same plane, and this plane is perpendicular to the transverse direction Y. In some embodiments, the first bend end 2221 and the air outlet end 2222 are located in the same plane, and this plane is perpendicular to the transverse direction Y. The air outlet end 2222 is connected to the heat exchange module 3. The connection allows the heat exchange module 3 and the pipe section 221 to be distributed along the vertical direction Z, and the pipe section 221 to be adjacent to the heat exchange module 3, so that the air inlet pipe 22 and the heat exchange module 3 are compactly arranged, thereby reducing the overall size of the UAV thermal management device. In some embodiments, the plane where the first bend end 2221 is located and the plane where the air outlet end 2222 is located are arranged in parallel, or the arrangement of the first bend end 2221 and the air outlet end 2222 only needs to ensure that the pipe section 221 is adjacent to the heat exchange module 3 and that the pipe section 221 is parallel to the heat exchange pipe 5.

[0037] Reference Figure 4 as well as Figure 5 The flow surface of the air inlet end 2232 of the circulation pipe is oblong, the flow surface of the second bend end 2231 is rectangular, the flow surfaces of the pipe section 221 and the diffuser bend 222 are both rectangular, and the flow areas of the inlet bend 223, the pipe section 221 and the diffuser bend 222 gradually increase along the blowing direction B. The flow area of ​​the first pipe section end 2211 is smaller than the flow area of ​​the second pipe section end 2212, the flow area of ​​the first bend end 2221 is smaller than the flow area of ​​the outlet end 2222, and the flow area of ​​the air inlet end 2232 of the circulation pipe is smaller than the flow area of ​​the second bend end 2231. In some embodiments, it is sufficient that the flow area of ​​the first pipe section end 2211 is smaller than the flow area of ​​the second pipe section end 2212, the flow area of ​​the first bend end 2221 is smaller than the flow area of ​​the outlet end 2222, and the flow area of ​​the air inlet end 2232 of the circulation pipe is smaller than the flow area of ​​the second bend end 2231.

[0038] When the air inlet duct 22 is bent, the air is unevenly distributed at the diffuser bend 222 when it passes through the diffuser bend 222. The following technical solution is used to improve this.

[0039] The diffuser bend 222 has a guide plate 4, which includes a first straight plate 41, a first bent plate 42, a second straight plate 43, and a second bent plate 44. These plates are sequentially distributed along the airflow direction B within the diffuser bend 222. The width of each plate is parallel to the longitudinal direction X. A portion of the first straight plate 41 is connected to the pipe... The inner wall of part 221 is fixedly connected, and the other part of the first straight plate 41, the first bent plate 42, the second straight plate 43 and the second bent plate 44 are all fixedly connected to the inner wall of the diffuser bend 222. The first straight plate 41 divides the flow surface of the diffuser bend 222 evenly, so that the air enters the diffuser bend 222 evenly at the air inlet at the first bend end 2221 and the air is evenly discharged from the diffuser bend 222 at the air outlet 2222, so that the air duct in the air inlet pipe 22 is more evenly distributed.

[0040] In some embodiments, the diffuser bend 222 has at least two guide vanes 4, for example, see reference. Figure 4 as well as Figure 5 The diffuser bend 222 has three guide plates 4. The three first straight plates 41 are evenly distributed along the vertical direction Z, and the three first straight plates 41 evenly divide the flow surface of the pipe section 221. The three second bent plates 44 evenly divide the flow surface of the air outlet 2222. The guide plates 4 extend along the extension direction of the diffuser bend 222.

[0041] Reference Figure 4 as well as Figure 5 The guide plate 4 is an integral piece. Since the flow surface of the second bend end 2231 is rectangular, and the flow surfaces of the pipe section 221 and the diffuser bend 222 are also rectangular, the guide plate 4 can be more conveniently connected and fixed to the inner wall of the pipe section 221 and the diffuser bend 222.

[0042] After the air enters the diffuser bend 222 through the pipe section 221, the air is evenly distributed by the three guide plates 4 and blown towards the air outlet 2222 along the extension direction of the guide plates 4, making the air duct distribution in the diffuser bend 222 more uniform, improving the heat exchange efficiency of the heat exchange module 3 to the diffuser bend 222, and further saving energy consumption.

[0043] Reference Figure 3 as well as Figure 6 The length direction of the heat exchange tube 5 is parallel to the transverse direction Y. The heat exchange tube 5 includes a first heat exchange tube body 51 and a second heat exchange tube body 52. ​​The length directions of the first heat exchange tube body 51 and the second heat exchange tube body 52 are both parallel to the transverse direction Y. The heat exchange tube 5 and the tube section 221 are arranged parallel to each other. The air blowing direction D in the heat exchange tube 5 is parallel to the air blowing direction C in the tube section 221. The heat exchange tube 5 and the tube section 221 are arranged adjacent to each other. The first heat exchange tube body 51 and the second heat exchange tube body 52 are distributed sequentially along the air blowing direction B. One end of the first heat exchange tube body 51 is fixedly connected to one end of the second heat exchange tube body 52. ​​The other end of the first heat exchange tube body 51 is fixedly connected to the air outlet 2222. The heat exchange tube 5 is connected to the diffuser bend 222. The heat exchange module 3 includes an air heat exchange component 31, a cooling component 32 and an electric heater 33. The air heat exchange component 31 includes a cooling pipe 311, a flow pipe 312 and a heat exchange fan 313.

[0044] Reference Figure 6 as well as Figure 7 The first heat exchange tube body 51 has a first through hole 511 and a second through hole 512. The first through hole 511 and the second through hole 512 are distributed along the longitudinal direction X. The cooling tube 311 and the flow tube 312 are located between the first through hole 511 and the second through hole 512. The two ends of the cooling tube 311 are respectively connected to the first through hole 511 and the second through hole 512.

[0045] The first heat exchange tube body 51 has a disassembly through hole 513 and a baffle plate 514. The disassembly through hole 513 is located on the side of the air heat exchange assembly 31 away from the mounting plate 1. The baffle plate 514 is fixedly connected to or limited by the first heat exchange tube body 51. Specifically, the baffle plate 514 and the first heat exchange tube body 51 are connected together by bolts.

[0046] During installation, the cooling pipe 311 and the flow pipe 312 are simply installed into the heat exchange pipe 5 through the disassembly through hole 513, so that both ends of the cooling pipe 311 are connected to the first through hole 511 and the second through hole 512 respectively, which facilitates the installation of the air heat exchange component 31.

[0047] Reference Figure 8 as well as Figure 9 The first heat exchange tube body 51 has three baffles 515 on its inner wall distributed along the longitudinal direction X. The length direction of the baffles 515 is parallel to the vertical direction Z. The three baffles 515 are distributed along the transverse direction Y and along the air blowing direction B. The three baffles 515 are, in sequence, the first baffle 5151, the second baffle 5152, and the third baffle 5153. The second baffle 5152 and the third baffle 5153 are located on both sides of the first through hole 511 or the second through hole 512, respectively. A filter screen is held between the first baffle 5151 and the second baffle 5152. The cooling tube 311 and the flow tube 312 are both held by the second baffle 5152 and the third baffle 5153. The second baffle 5152 and the third baffle 5153 restrict the movement of the cooling tube 311 and the flow tube 312 along the transverse direction Y, thereby positioning the cooling tube 311 and the flow tube 312 and facilitating installation.

[0048] Reference Figure 10 as well as Figure 11 The length direction of the flow pipe 312 is parallel to the transverse direction Y, and the length direction of the cooling pipe 311 is parallel to the longitudinal direction X. The cooling pipe 311 and the flow pipe 312 are distributed along the vertical direction Z. In some embodiments, the cooling pipe 311 and the flow pipe 312 are arranged intersectingly, such as... Figure 10 In the middle, the cooling pipe 311 and the flow pipe 312 are arranged perpendicularly.

[0049] Reference Figure 10 as well as Figure 11 The cooling pipe 311 includes multiple partitions 3112 and multiple first seals 3111. The flow pipe 312 includes multiple second seals 3121. The multiple partitions 3112 are evenly distributed along the vertical direction Z. The first seals 3111 and the second seals 3121 are alternately distributed along the vertical direction Z. The length direction of the first seal 3111 is parallel to the longitudinal direction X. The length direction of the second seal 3121 is parallel to the transverse direction Y. Along the vertical direction Z, there is a partition 3112 between each adjacent first seal 3111 and second seal 3121. There are two first seals 3111 or two second seals 3121 between each two adjacent partitions 3112. The multiple partitions 3112, the multiple first seals 3111, and the multiple second seals 3121 are a single piece.

[0050] Reference Figure 10 as well as Figure 11A cooling channel 3113 is formed between two adjacent partitions 3112 and the first seal 3111, and a flow channel 3122 is formed between two adjacent partitions 3112 and the second seal 3121. The cooling channel 3113 and the flow channel 3122 are located in different planes and are perpendicular to each other. The cooling channel 3113 and the flow channel 3122 are not in fluid communication. The cooling channel 3113 is connected to both the first through hole 511 and the second through hole 512, and the flow channel 3122 is connected to the diffuser bend 222. In some other embodiments, both the cooling pipe 311 and the flow pipe 312 have fins. Both the cooling pipe 311 and the flow pipe 312 are located between the second baffle 5152 and the third baffle 5153.

[0051] The cooling pipe 311 and the flow pipe 312 are formed by multiple thin partitions 3112, multiple first seals 3111, and multiple second seals 3121. On the one hand, the cooling channel 3113 and the flow channel 3122 are separated by only a thin partition 3112, which reduces the distance between the cooling channel 3113 and the flow channel 3122, thereby increasing the heat exchange effect between the cooling channel 3113 and the flow channel 3122. On the other hand, the superposition of multiple thin partitions 3112, multiple first seals 3111, and multiple second seals 3121 facilitates the processing and formation of the cooling channel 3113 and the flow channel 3122.

[0052] Reference Figure 8 as well as Figure 9 The first heat exchange tube body 51 has an extension tube 516, which is aligned with the first through hole 511. (Refer to...) Figure 7 as well as Figure 9 The heat exchange fan 313 is fixedly connected to the extension tube 516, and the heat exchange fan 313 is located on the side of the extension tube 516 away from the first heat exchange tube body 51.

[0053] By extending the tube 516, the distance between the heat exchange fan 313 and the multiple baffles 3112, the multiple first seals 3111, and the multiple second seals 3121 can be increased, making it easier for the heat exchange fan 313 to extract outside air from the cooling channel 3113, accelerating the flow rate of outside air in the cooling channel 3113, and improving the heat exchange efficiency between the cooling channel 3113 and the flow channel 3122.

[0054] During normal use, the fan 21 and heat exchange fan 313 start, allowing the heat inside the drone charging device to enter the air inlet pipe 22 through the air inlet end 2232 of the circulation pipe. The heat is then evenly distributed by the guide plate 4 inside the air inlet pipe 22, reducing the situation where the airflow in the air inlet pipe 22 is concentrated in one place due to the curved design of the air inlet pipe 22. This makes the airflow distribution in the air inlet pipe 22 more uniform and improves the heat exchange efficiency. The heat exchange fan 313 allows the outside air of the drone charging device to enter the cooling pipe 311. The cooling pipe 311 exchanges the heat in the circulation pipe 312 to cool the drone charging device. When the outside temperature is too high, the air heat exchange component 31 stops operating, and the cooling component 32 provides cooling.

[0055] In some embodiments, the difference from the above-described embodiments is that: the air heat exchange assembly 31 includes a cooling pipe 311 and a heat exchange fan 313; the first heat exchange tube body 51 does not have a first through hole 511 and a second through hole 512; the length direction of the cooling pipe 311 is parallel to the longitudinal direction X; the cooling pipe 311 passes through the first heat exchange tube body 51 in the longitudinal direction; the cooling pipe 311 is fixedly connected to the first heat exchange tube body 51; both ends of the cooling pipe 311 are exposed to the outside of the UAV thermal management device; the heat exchange fan 313 is fixedly connected to the first heat exchange tube body 51; the heat exchange fan 313 is aligned with one end of the cooling pipe 311; in use, only the heat exchange fan 313 needs to be started, and the heat exchange fan 313 accelerates the airflow between the cooling pipe 311 and the outside of the UAV thermal management device, realizing the exchange of heat between the circulating air in the first heat exchange tube body 51 and the cooling pipe 311.

[0056] In some embodiments, the difference from the above-described embodiments is that the air heat exchange assembly 31 includes a plurality of cooling pipes 311 and a plurality of flow pipes 312. The length direction of the plurality of cooling pipes 311 is parallel to the longitudinal direction X, and the length direction of the plurality of flow pipes 312 is parallel to the transverse direction Y and the vertical direction Z. The cooling pipes 311 and the flow pipes 312 are stacked alternately and integrally formed. The cooling pipes 311 have a cooling channel 3113 inside, and the flow pipes 312 have a flow channel 3122 inside. The cooling channel 3113 is connected to the first through hole 511 and the second through hole 512. The flow channel 3122 is connected to the air outlet 2222 and the first heat exchange tube body 51.

[0057] Reference Figure 2 as well as Figure 12The refrigeration assembly 32 includes an evaporator 321, a condenser 322, a throttling device 325, and a compressor 324. The evaporator 321 is arranged parallel to the vertical direction Z and is located inside the first heat exchange tube body 51. The air inlet surface of the evaporator 321 is the windward surface, which is parallel to the vertical direction Z. The windward surface of the evaporator 321 is perpendicular to the airflow direction B inside the heat exchange tube 5. The evaporator 321 is fixedly connected to or limited by the first heat exchange tube body 51. Specifically, the evaporator 321 can be installed inside the first heat exchange tube body 51 by bolts. The compressor 324 is fixedly connected to the mounting plate 1. Along the longitudinal direction X, the compressor 324 and the electronic expansion valve 323 are both located inside the evaporator. Between the evaporator 321 and the condenser 322, the compressor 324 is closer to the condenser 322 than the evaporator 321. The condenser 322 is arranged parallel to the longitudinal direction X. Along the vertical direction Z, the first through hole 511 is located on the side of the condenser 322 away from the mounting plate 1. When the air heat exchange assembly 31 is cooling, since the first through hole 511 is located on the side of the condenser 322 away from the mounting plate 1, the airflow direction of the condenser 322 and the heat exchange fan 313 is staggered, which can reduce the influence of the condenser 322 on the air intake rate of the heat exchange fan 313. The condenser 322, the electronic expansion valve 323 and the compressor 324 are all located on the side of the first through hole 511 away from the second through hole 512.

[0058] Reference Figure 12 as well as Figure 13 The compressor 324 has a first outlet 3241 and a first inlet 3242, the condenser 322 has a second inlet 3221 and a second outlet 3222, the evaporator 321 has a third inlet 3211 and a third outlet 3212, and the throttling element 325 includes an electronic expansion valve 323, which has a fourth inlet 3231 and a fourth outlet 3232. The first outlet 3241 is connected to the second inlet 3221 through a pipe, the second outlet 3222 is connected to the fourth inlet 3231 through a pipe, the fourth outlet 3232 is connected to the third inlet 3211 through a pipe, and the third outlet 3212 is connected to the first inlet 3242 through a pipe.

[0059] Reference Figure 12 as well as Figure 14The condenser 322 has a condenser fan 3223 and a fan shield 3224. Along the vertical direction Z, the fan shield 3224 is located between the mounting plate 1 and the condenser 322. The fan shield 3224 is fixedly connected to the condenser 322 and the mounting plate 1. The mounting plate 1 has a third through hole 11, which communicates with the inside of the fan shield 3224. The condenser fan 3223 is located inside the fan shield 3224 and is aligned with the third through hole 11. The condenser fan 3223 is fixedly connected to the mounting plate 1. In use, when the refrigeration component 32 is working, the condenser fan 3223 can cool the condenser 322. When the refrigeration component 32 is not working, the condenser fan 3223 can quickly extract the air drawn into the condenser 322 by the heat exchange fan 313.

[0060] Reference Figure 15 as well as Figure 16 The second heat exchange tube body 52 has an extension tube 521. The second heat exchange tube body 52 and the extension tube 521 are arranged sequentially along the air blowing direction B. The extension tube 521 is connected to the second heat exchange tube body 52. ​​The extension tube 521 has an extension tube inlet end 522 and an extension tube outlet end 523. The extension tube inlet end 522 is integrally formed with the second heat exchange tube body 52. ​​The flow area of ​​the extension tube outlet end 523 is smaller than the flow area of ​​the extension tube inlet end 522. The electric heater 33 is located inside the second heat exchange tube body 52 and is fixedly connected to the second heat exchange tube body 52. ​​The cooling tube 311, the evaporator 321 and the electric heater 33 are distributed sequentially along the air blowing direction B.

[0061] Reference Figure 15 as well as Figure 16 The fan 21 includes a centrifugal fan 6; in some embodiments, the fan 21 may also include an axial fan; the centrifugal fan 6 has a fan inlet end 61 and a circulation pipe outlet end 62, the centrifugal fan 6 includes a first housing part 63, a second housing part 64 and a fan blade 65, the first housing part 63 has a fan inlet end 61, and the fan inlet end 61 and the extension pipe outlet end 523 are integrally formed.

[0062] Reference Figure 18 as well as Figure 19 The second housing portion 64 has a mounting through hole 641, a first support surface 642 and a second support surface 643, the first support surface 642 and the second support surface 643 are connected to each other, and the first support surface 642 and the second support surface 643 are both located around the mounting through hole 641.

[0063] Reference Figure 16 as well as Figure 17The centrifugal fan 6 has an inclined volute, and its thickness direction is inclined relative to the transverse direction Y. The inclined direction F of the volute intersects with the transverse direction Y. There is a gap between the fan inlet 61 and the electric heater 33. The circulation pipe outlet 62 is adjacent to the circulation pipe inlet 2232. The orthographic projection of the fan inlet 61 on the mounting plate 1 is at least partially located within the orthographic projection of the circulation pipe outlet 62 on the mounting plate 1. Alternatively, in some embodiments, the orthographic projection of the fan inlet 61 on the mounting plate 1 is located on the side of the circulation pipe outlet 62 on the mounting plate 1 that is away from the heat exchange tube 5. The first support surface 642 is inclined. The first support surface 642 is inclined in the direction E of parallel to the inclination direction F of the centrifugal fan 6. The second support surface 643 is perpendicular to the first support surface 642. The first support surface 642 and the second support surface 643 are used to support the first housing part 63, and both the first support surface 642 and the second support surface 643 are in contact with the first housing part 63. The first housing part 63 covers the mounting through hole 641. The fan blade 65 is located inside the second housing part 64, and the second housing part 64 is rotatably connected to the fan blade 65. The first housing part 63 and the second housing part 64 are fixedly connected or limited connected. Specifically, the first housing part 63 and the second housing part 64 are connected by bolts.

[0064] By tilting the centrifugal fan 6, the air inlet 61 of the centrifugal fan 6 is positioned far away from the electric heater 33. This improves the suction effect of the centrifugal fan 6 on the circulating air in the heat exchange tube 5, and also lengthens the path of the circulating air through the electric heater 33, thus improving the heating effect of the electric heater 33 on the circulating air. The tilted centrifugal fan 6 also allows the air outlet 62 of the circulating pipe to be adjacent to the air inlet 2232 of the circulating pipe, facilitating connection between the UAV thermal management device and the air inlet and outlet of the UAV charging device, thereby improving the modularity and integration of the UAV thermal management device. Furthermore, the tilted centrifugal fan 6 allows the first housing part 63 to be placed on the first support surface 642 and the second support surface 643 when installing the first housing part 63 onto the second housing part 64, and then connected to the second housing part 64 with bolts, facilitating the installation of the two housing parts.

[0065] Reference Figure 16 as well as Figure 17The second housing part 64 has an air-gathering duct 644, which has a circulation pipe outlet end 62 and an air-gathering duct inlet end 645. The air-gathering duct inlet end 645 is connected to the second housing part 64, and the flow area of ​​the air-gathering duct inlet end 645 is larger than the flow area of ​​the circulation pipe outlet end 62. Because the flow area of ​​the air-gathering duct inlet end 645 is larger than the flow area of ​​the circulation pipe outlet end 62, the air speed blown out from the centrifugal fan 6 is increased, which improves the cooling or heating effect on the drone charging device. The mounting plate 1 has a second opening 14, and the first opening 13 and the second opening 14 are distributed along the transverse direction Y and are arranged adjacent to each other. The circulation pipe outlet end 62 is fixed to the mounting plate 1. The circulation pipe outlet 62 is connected to the second opening 14. The circulation pipe outlet 62 and the circulation pipe inlet 2232 both face the same plane, which is perpendicular to the vertical direction Z. The circulation pipe outlet 62 and the circulation pipe inlet 2232 are both located on the side of the first heat exchange tube body 51 facing the mounting plate 1. Specifically, the circulation pipe outlet 62 and the circulation pipe inlet 2232 both face the mounting plate 1, and the circulation pipe outlet 62 and the circulation pipe inlet 2232 are both located on the same plane. Along the transverse direction Y, the circulation pipe outlet 62 and the circulation pipe inlet 2232 are arranged adjacent to each other. In some embodiments, the circulation pipe outlet 62 and the circulation pipe inlet 2232 are located in the same plane.

[0066] Reference Figure 18 as well as Figure 20 The first housing portion 63 has a positioning insert 631, the positioning insert 631 has a hook portion 632, the second housing portion 64 has a fixing block 646, the fixing block 646 has a positioning through hole 647, the positioning through hole 647 is for the hook portion 632 and the positioning insert 631 to pass through, the hook portion 632 has a blocking wall 633, the positioning insert 631 is at least partially located in the positioning through hole 647, along the inclined direction of the second housing portion 64, the hook portion 632 is located on the side of the fixing block 646 away from the first housing portion 63, and the blocking wall 633 is in contact with the fixing block 646.

[0067] Reference Figure 15 The mounting plate 1 has a support plate 12, which is inclined and parallel to the inclination direction F of the centrifugal fan 6. The support plate 12 is located on the side of the second housing part 64 away from the first housing part 63, and the support plate 12 is fixedly connected to the second housing part 64. Since the centrifugal fan 6 is inclined, the connection between the centrifugal fan 6 and the mounting plate 1 is prone to deformation. The support plate 12 supports the centrifugal fan 6, reducing the deformation of the connection between the centrifugal fan 6 and the mounting plate 1 caused by the inclined setting.

[0068] The above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. The understanding of this application should be based on those skilled in the art. Although this specification has described this application in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to this application. All technical solutions and improvements that do not depart from the spirit and scope of this application should be covered within the scope of the claims of this application.

Claims

1. A thermal management device for unmanned aerial vehicles (UAVs), characterized in that, The device includes an air inlet pipe and a heat exchange module. The air inlet pipe includes a pipe section and a diffuser bend. The diffuser bend has a first bend end and an air outlet end. One end of the pipe section is connected to the first bend end, and the air outlet end is connected to the heat exchange module. The pipe section is located on one side of the heat exchange module. A plane is defined as a surface parallel to the height direction of the UAV thermal management device. Both the first bend end and the air outlet end face the plane. The pipe section has a first pipe section end and a second pipe section end. The flow area of ​​the first pipe section end is smaller than the flow area of ​​the second pipe section end. The second pipe section end is connected to the first bend end. The flow area of ​​the first bend end is smaller than the flow area of ​​the air outlet end. The diffuser bend has a guide plate inside, which extends along the extension direction of the diffuser bend. The guide plate includes a first straight plate, a first curved plate, a second straight plate, and a second curved plate. The first straight plate, the first curved plate, the second straight plate, and the second curved plate are arranged sequentially along the extension direction of the air inlet pipe. The first straight plate is connected to the first curved plate, the first curved plate is connected to the second straight plate, and the second straight plate is connected to the second curved plate.

2. The UAV thermal management device as described in claim 1, characterized in that: The flow surface of the second pipe end is rectangular, and the flow surface of the diffuser bend is rectangular.

3. The UAV thermal management device as described in claim 1, characterized in that: The air inlet pipe includes an inlet bend, which has a circulation pipe inlet end and a second bend end. The second bend end is connected to the first pipe end, and the circulation pipe inlet end is located on the side of the pipe away from the heat exchange module.

4. The UAV thermal management device as described in claim 3, characterized in that: The UAV thermal management device includes a heat exchange tube connected to the air outlet. The heat exchange module is at least partially located inside the heat exchange tube. The continuous curve formed by the air blowing direction is located in the same plane. The air blowing direction inside the tube is parallel to the air blowing direction inside the heat exchange tube.

5. The UAV thermal management device as described in claim 4, characterized in that: The UAV thermal management device includes a fan with an air inlet and a circulation pipe outlet. The heat exchange pipe is connected to the air inlet and the first bend end. The heat exchange module is located at least partially inside the heat exchange pipe.

6. The UAV thermal management device as described in claim 5, characterized in that: The UAV thermal management device includes a mounting plate. The air inlet and air outlet of the circulation pipe are both connected to the mounting plate. The mounting plate has a first opening and a second opening. The first opening is connected to the air inlet of the circulation pipe, and the second opening is connected to the air outlet of the circulation pipe.

7. The UAV thermal management device as described in claim 6, characterized in that: The fan includes a centrifugal fan, which is inclined and has an air inlet and an air outlet of the circulation pipe. The orthographic projection of the fan inlet end on the mounting plate is at least partially located within the orthographic projection of the circulation pipe outlet end on the mounting plate. Alternatively, the orthographic projection of the fan inlet end on the mounting plate is located on the side of the orthographic projection of the circulation pipe outlet end on the mounting plate that is away from the heat exchange pipe.

8. The UAV thermal management device as described in claim 7, characterized in that: The mounting plate has a support plate, which is at least partially located on the side of the fan away from the heat exchange tube, and the support plate is connected to the centrifugal fan.

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