Liquid curtain type unmanned aerial vehicle-mounted radar heat dissipation device

Abstract

The invention discloses a liquid curtain type unmanned aerial vehicle-mounted laser radar heat dissipation device, and particularly relates to the technical field of laser radars, the liquid curtain type unmanned aerial vehicle-mounted laser radar heat dissipation device comprises a radar body, a fluid heat dissipation structure is fixedly mounted at the upper end of the radar body, and a rear heat dissipation structure communicating with an inner cavity of the fluid heat dissipation structure is fixedly mounted at the rear end of the fluid heat dissipation structure; the left end and the right end of the rear heat dissipation structure and the left end and the right end of the fluid heat dissipation structure are jointly and fixedly provided with side heat dissipation structures communicating with an inner cavity of the rear heat dissipation structure. According to the liquid curtain type unmanned aerial vehicle-mounted laser radar heat dissipation device, through cooperation of the fluid heat dissipation structure and the rear heat dissipation structure, low-temperature cooling liquid is fed into the rear heat dissipation structure and exchanges heat with the radar body from the rear portion, and heat in the radar body is exchanged into the cooling liquid in the heat exchange process; and synchronously, heat exchange is performed on the radar body from two sides under the action of the side heat dissipation structure, so that the temperature of the radar body is ensured to be within a rated range, and the influence of temperature change on radar performance is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lidar, and particularly to a liquid curtain type unmanned aerial vehicle (UAV) borne lidar heat dissipation device. Background Art

[0002] The UAV borne lidar can calculate the physical information of an object, such as distance, azimuth, height, etc., by emitting laser and receiving the reflected signal, form point data with three-dimensional space information, and then generate three-dimensional point cloud data to realize functions such as target object recognition, parameter measurement, and motion tracking. As a high-precision measurement device, it is widely used in fields such as aerial photography, reconnaissance, and surveying and mapping.

[0003] Since the lidar pod is usually of a closed structure, the heat generated during the operation of the lidar is difficult to be evenly dissipated, resulting in a decline in the performance of the lidar. In addition, the increase in the number of laser emission lines leads to a dense arrangement of lasers at the emission end, an increase in power consumption, and further an increase in heat generation, affecting the stability of internal components and thus causing accuracy fluctuations.

[0004] Due to relying on air flow, the air-cooled heat dissipation system is difficult to achieve uniform distribution and rapid conduction of heat. Especially in power devices with high heat flux density, it is difficult for the air-cooled radiator to solve the problem of uneven heat dissipation between multiple heat sources, easily causing local overheating and affecting the performance and lifespan of the lidar; Moreover, the efficiency of air-cooled heat dissipation is limited by the thermal conductivity of the material. Compared with other heat dissipation methods such as liquid cooling, the heat transfer efficiency of air-cooling is lower. In a high-temperature environment, the problem of low air-cooled heat dissipation efficiency is more obvious, resulting in an increase in heat dissipation dead zones and affecting the heat dissipation performance of the entire system. Summary of the Invention

[0005] The main purpose of the present invention is to provide a liquid curtain type UAV borne lidar heat dissipation device, which can effectively solve the problems of uneven heat dissipation of the existing lidar, low heat transfer efficiency, and large performance fluctuations affecting accuracy.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A liquid curtain type UAV borne lidar heat dissipation device, including a radar body, a fluid heat dissipation structure is fixedly installed at the upper end of the radar body, a rear heat dissipation structure communicated with its inner cavity is fixedly installed at the rear end of the fluid heat dissipation structure, side heat dissipation structures communicated with the inner cavity of the rear heat dissipation structure are fixedly installed together at the left and right ends of the rear heat dissipation structure and the left and right ends of the fluid heat dissipation structure, and both sides of the side heat dissipation structures are closely attached to the left and right ends of the radar body, and the front end of the rear heat dissipation structure and the rear end of the radar body. The fluid cooling structure includes a coolant storage box fixedly connected to the front end of the rear cooling structure. The inner surface of the coolant storage box is linearly and fixedly connected with a plurality of hollow copper plates. The upper ends of the plurality of hollow copper plates all penetrate through the inner cavity of the coolant storage box and extend to the upper end of the coolant storage box. A plurality of convex blocks are linearly and fixedly connected to the left and right ends of the plurality of coolant storage boxes.

[0007] Preferably, the rear cooling structure includes a rear support box fixedly connected to the rear end of the coolant storage box. The inner surface of the rear support box is fixedly connected with a heat exchange component II. The upper end and the lower end of the heat exchange component II are respectively fixedly connected with a distribution box and a return water box. A cold water tank communicating with its right end and the inner cavity of the distribution box is opened in the upper part of the left end of the rear support box. A warm water tank communicating with its right end and the inner cavity of the return water box is opened in the lower part of the left end of the rear support box. Both the distribution box and the return water box are communicated with the heat exchange component II.

[0008] Preferably, the heat exchange component II includes a contact block fixedly connected to the lower end of the distribution box and the upper end of the return water box. The left and right sides of the inner surface of the contact block are symmetrically and fixedly connected with support plates. A plurality of heat exchange components are linearly and fixedly connected to the inner surface of the contact block. A second communication pipe communicating with the distribution box and the adjacent support plate is opened at the upper ends of the two heat exchange components. A notch communicating with the return water box is opened at the rear part of the lower end of the contact block.

[0009] Preferably, the heat exchange component includes an I-shaped plate. A first communication pipe communicating with its right end and the adjacent second communication pipe is opened at the left end of the horizontal part of the I-shaped plate. A plurality of water spraying holes communicating with the front part of the upper end of the horizontal part of the I-shaped plate are linearly opened on the inner surface of the first communication pipe. Check valves are fixedly installed on both the left and right sides of the first communication pipe. A plurality of groups of flow disturbing plates are arranged at intervals along the water spraying holes on the side of the I-shaped plate close to the radar body. An overflow port communicating with the rear end is opened at the upper front part of the vertical part of the I-shaped plate. A shielding cover is fixedly connected to the position corresponding to the overflow port at the upper rear part of the vertical part of the I-shaped plate.

[0010] Preferably, the flow disturbing plate includes a J-shaped flow disturbing plate and an arc-shaped flow disturbing plate installed at the front end of the I-shaped plate and symmetrically distributed about the center of the water spraying hole. The arc-shaped parts of the two J-shaped flow disturbing plates face each other and the openings are upward. An arc-shaped flow disturbing plate is fixedly connected to the upper side of the end of each of the two J-shaped flow disturbing plates far from the adjacent water spraying hole. The opening of the arc-shaped flow disturbing plate is downward.

[0011] Preferably, a pump body installation groove is formed at the upper end of the rear support box, a multi-chamber circulation pump is fixedly installed on the inner surface of the pump body installation groove, a warm water pipe communicating with the inner cavity thereof is fixedly connected to the rear end of the warm water tank, a cold water pipe communicating with the inner cavity thereof is fixedly connected to the rear end of the cold water tank, both the warm water pipe and the cold water pipe are communicated with the inner cavity of the coolant storage box through the multi-chamber circulation pump, the inlet of the warm water pipe is located at the lower part of the coolant storage box, and the outlet of the cold water pipe is located at the upper side of the coolant storage box.

[0012] Preferably, the side heat dissipation structure includes a side support box fixedly connected to one side of the rear support box, a partition plate is fixedly connected to the inner surface of the side support box, communication ports are symmetrically formed at the upper and lower ends of the side support box close to the rear support box, distribution pipes communicating with the adjacent communication ports are symmetrically fixedly connected to the inner surface of the side support box up and down, one ends of the two distribution pipes far away from the radar body penetrate through the partition plate and extend to the side of the partition plate far away from the radar body and are fixedly connected with water distribution pipes, a plurality of heat exchange components I are linearly distributed and fixedly connected to the inner surface of the partition plate, a water curtain component is fixedly connected to the side of the partition plate far away from the radar body, and an isolation net is jointly fixedly connected to the lower part of the inner surface of the side support box and one end of the partition plate far away from the radar body.

[0013] Preferably, the water curtain component includes a wedge-shaped block fixedly connected to one end of the partition plate far away from the radar body, the wedge-shaped block is trapezoidal, a baffle is fixedly connected to the junction of the upper inclined surface and the vertical surface thereof, a water blocking groove is formed at the upper end of the baffle, a plurality of overflow holes communicating with the rear end of the baffle are formed in the middle and lower part of the inner surface of the water blocking groove far away from the radar body, and the inclined surface part of the wedge-shaped block is located below the outlet of the water distribution pipe.

[0014] Preferably, the heat exchange component I includes a flat copper pipe attached to the radar body, inclined pipes symmetrically fixedly connected to the upper and lower ends of the flat copper pipe and inclined towards each other, the two inclined pipes are V-shaped in spatial distribution, and one ends thereof far away from the flat copper pipe are jointly fixedly connected with a heat exchange pipe located below the overflow hole, a plurality of outer spiral grooves are annularly distributed on the outer surface of the heat exchange pipe, and a plurality of inner spiral grooves are annularly distributed on the inner surface of the heat exchange pipe.

[0015] Preferably, a limiting ring is fixedly connected to the upper part of the inner surface of the flat copper pipe, a check valve baffle slidably connected to the inner surface of the flat copper pipe is arranged above the limiting ring, four limiting columns slidably connected to the limiting ring are fixedly connected to the lower end of the check valve baffle in a rectangular distribution, and spring rubber rings fixedly connected to the lower end of the limiting ring are fixedly connected to the lower parts of the outer surfaces of the four limiting columns.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention cools down the coolant through the action of the fluid heat dissipation structure, and synchronously sends the low-temperature coolant into the rear heat dissipation structure through the cooperation of the fluid heat dissipation structure and the rear heat dissipation structure, and exchanges heat with the radar body from the rear, and exchanges the heat in the radar body into the coolant during the heat exchange process; synchronously, the coolant is distributed into the side heat dissipation structure through the cooperation of the side heat dissipation structure and the rear heat dissipation structure, and the radar body is exchanged with heat from both sides through the action of the side heat dissipation structure, thereby realizing uniform exchange of heat in the radar body, ensuring that the temperature of the radar body is within the rated range, and reducing the influence of temperature changes on radar performance.

[0017] The present invention promotes the coolant to enter the heat exchange component 2 through the cooperation of the multi-cavity circulation pump, the warm water pipe and the cold water pipe, and evenly distributes it to each heat exchange component by using the connecting pipe 2. The spoiler arranged in the heat exchange component promotes the coolant to flow slowly in the I-shaped plate and exchange heat with the contact block, so that the heat in the radar body is introduced into the coolant, and finally flows into the return water box through the overflow port and the shielding cover, and returns to the warm water pipe through the return water box, and is sent back to the coolant storage box for cooling by the action of the warm water pipe and the multi-cavity circulation pump, thereby achieving uniform heat dissipation of the radar body and reducing performance fluctuations caused by uneven heat dissipation.

[0018] The present invention provides cooling liquid to the distribution pipe through a cold water tank and a connecting port, and sends the low-temperature cooling liquid into the water curtain component through the action of a water uniforming pipe, and forms a water curtain through the water curtain component to dissipate heat for the heat exchange component 1, keep the heat exchange component 1 in a low-temperature state, and exchange heat with the radar body through the contact between the flat copper tube and the radar body, so as to keep the radar body in a low-temperature state, and the water curtain action makes several heat exchange components 1 maintain a uniform low temperature, thereby ensuring the uniformity of temperature, keeping the radar body in a low-temperature state, and reducing performance degradation caused by continuous high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the fluid heat dissipation structure of the present invention; Figure 3 It is a structural schematic diagram of the rear heat dissipation structure of the present invention; Figure 4 It is a schematic diagram of the positional relationship between the contact block, the distribution box, and the water return box of the present invention; Figure 5 It is a schematic diagram of the connection relationship between the heat exchange component and the support plate of the present invention; Figure 6 It is a structural schematic diagram of the heat exchange component of the present invention; Figure 7 It is a schematic diagram of the corresponding relationship between the overflow port and the shielding cover of the present invention; Figure 8 It is a schematic diagram of the connection relationship between the connecting port and the cold water tank and the warm water tank of the present invention; Figure 9 It is a structural schematic diagram of the side heat dissipation structure of the present invention; Figure 10 It is a structural schematic diagram of a heat exchange component 1 of the present invention; Figure 11 It is a schematic diagram of the explosion effect of the heat exchange component 1 of the present invention; Figure 12 It is a schematic structural diagram of the water curtain assembly of the present invention.

[0020] In the figure: 1. Radar body; 2. Side heat dissipation structure; 21. Side support box; 211. Partition plate; 22. Distribution pipe; 23. Communication port; 24. Water distribution pipe; 25. Heat exchange component 1; 251. Flat copper tube; 252. Non-return baffle; 2521. Limiting column; 2522. Spring rubber ring; 2523. Limiting ring; 253. Oblique tube; 254. Heat exchange tube; 2541. External spiral groove; 2542. Internal spiral groove; 28. Isolation net; 29. ​​Water curtain component; 291. Wedge block; 292. Block; 293. Water blocking groove; 294. Overflow hole; 3. Fluid heat dissipation structure; 31. Coolant storage box; 3 2. Hollow copper plate; 33. Bump; 4. Rear heat dissipation structure; 41. Rear support box; 42. Cold water tank; 421. Cold water pipe; 43. Warm water tank; 431. Warm water pipe; 44. Pump body mounting groove; 45. Heat exchange component 2; 451. Contact block; 452. Heat exchange component; 4521. I-shaped plate; 4522. Connecting pipe 1; 4523. Water spray hole; 4524. Check valve; 4525. J-shaped spoiler; 4526. Arc spoiler; 4527. Overflow port; 4528. Shielding cover; 453. Support plate; 454. Connecting pipe 2; 46. Distribution box; 47. Return water box; 48. Multi-cavity circulation pump. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] Embodiment 1, as Figure 1 As shown, a liquid curtain type unmanned aerial vehicle laser radar heat dissipation device comprises a radar body 1, a fluid heat dissipation structure 3 is fixedly installed on the upper end of the radar body 1, a rear heat dissipation structure 4 connected with the inner cavity of the fluid heat dissipation structure 3 is fixedly installed at the rear end of the fluid heat dissipation structure 3, and a side heat dissipation structure 2 connected with the inner cavity of the rear heat dissipation structure 4 is fixedly installed at the left and right ends of the rear heat dissipation structure 4 and the left and right ends of the fluid heat dissipation structure 3, and the side heat dissipation structures 2 on both sides are tightly fitted with the left and right ends of the radar body 1, and the front end of the rear heat dissipation structure 4 is tightly fitted with the rear end of the radar body 1; The above-mentioned radar body 1 is a conventional lidar, which is a conventional device in the prior art and is only used to demonstrate the installation effect in the present invention. The specific structure and operating principle thereof will no longer be shown and described in detail.

[0023] Further, to cool the coolant and ensure that it remains at a low temperature during circulation in the lateral heat dissipation structure 2 and the rear heat dissipation structure 4, refer to Figure 2 , the fluid heat dissipation structure 3 includes a coolant storage box 31 fixedly connected to the front end of the rear heat dissipation structure 4. A number of hollow copper plates 32 are fixedly connected to the inner surface of the coolant storage box 31 in a linear distribution. The upper ends of the a number of hollow copper plates 32 all penetrate through the inner cavity of the coolant storage box 31 and extend to the upper end of the coolant storage box 31. A number of bumps 33 are fixedly connected to the left and right ends of the a number of coolant storage boxes 31 in a linear distribution.

[0024] The coolant is located in the coolant storage box 31 and will exchange heat with the hollow copper plates 32. During the heat exchange process, due to the molecular thermal effect, heat will be transferred upward along the hollow copper plates 32 to the cooler top. The upper part of the hollow copper plates 32 is located in the external space, and the air flow will exchange heat with the hollow copper plates 32, causing its temperature to decrease, and cooling the coolant in the coolant storage box 31 in a cycle; Synchronously, the cooled low-temperature coolant will move downward to the bottom of the coolant storage box 31, and at the same time, the movement during the flight of the drone is used to accelerate the movement of the coolant, thereby realizing thermal stratification.

[0025] During the operation of this embodiment, first, the coolant is cooled by the action of the fluid heat dissipation structure 3. Synchronously, the low-temperature coolant is sent into the rear heat dissipation structure 4 through the cooperation of the fluid heat dissipation structure 3 and the rear heat dissipation structure 4 and exchanges heat with the radar body 1 from the rear. During the heat exchange process, the heat in the radar body 1 is exchanged into the coolant; synchronously, the coolant is distributed into the lateral heat dissipation structure 2 through the cooperation of the lateral heat dissipation structure 2 and the rear heat dissipation structure 4, and the radar body 1 is exchanged heat from both sides through the action of the lateral heat dissipation structure 2, thereby realizing uniform heat exchange in the radar body 1, ensuring that the temperature of the radar body 1 is within the rated range, and reducing the influence of temperature changes on the radar performance.

[0026] Embodiment 2: Based on Embodiment 1, this embodiment promotes the coolant to enter the heat exchange component 2 45 through the cooperation of the multi-cavity circulation pump 48, the warm water pipe 431 and the cold water pipe 421, and uses the connecting pipe 2 454 to evenly distribute it to each heat exchange component 452. The spoiler provided in the heat exchange component 452 promotes the coolant to flow slowly in the I-plate 4521 and exchange heat with the contact block 451, thereby introducing the heat in the radar body 1 into the coolant, and finally flows into the return water box 47 through the overflow port 4527 and the shielding cover 4528, and flows back to the warm water pipe 431 through the return water box 47, and is sent back to the coolant storage box 31 for cooling by the action of the warm water pipe 431 and the multi-cavity circulation pump 48, thereby achieving uniform heat dissipation of the radar body 1 and reducing performance fluctuations caused by uneven heat dissipation.

[0027] Specifically, in order to use the coolant to dissipate heat from the rear of the radar body 1, refer to Figure 3 The rear heat dissipation structure 4 includes a rear support box 41 fixedly connected to the rear end of the coolant storage box 31, a heat exchange component 45 is fixedly connected to the inner surface of the rear support box 41, a distribution box 46 and a return water box 47 are fixedly connected to the upper and lower ends of the heat exchange component 45 respectively, a cold water tank 42 is provided at the upper left end of the rear support box 41, which is connected to the right end thereof and to the inner cavity of the distribution box 46, a warm water tank 43 is provided at the lower left end of the rear support box 41, which is connected to the right end thereof and to the inner cavity of the return water box 47, and both the distribution box 46 and the return water box 47 are connected to the heat exchange component 45.

[0028] Further, in order to drive the coolant to circulate in the side heat dissipation structure 2 and the rear heat dissipation structure 4, refer to Figure 2 and Figure 4 A pump body mounting groove 44 is opened at the upper end of the rear support box 41, and a multi-cavity circulation pump 48 is fixedly installed on the inner surface of the pump body mounting groove 44. The rear end of the warm water tank 43 is fixedly connected with a warm water pipe 431 communicating with its inner cavity, and the rear end of the cold water tank 42 is fixedly connected with a cold water pipe 421 communicating with its inner cavity. The warm water pipe 431 and the cold water pipe 421 are both connected with the inner cavity of the coolant storage box 31 through the multi-cavity circulation pump 48. The inlet of the warm water pipe 431 is located at the lower part of the coolant storage box 31, and the outlet of the cold water pipe 421 is located on the upper side of the coolant storage box 31.

[0029] It should be specially explained that the above-mentioned multi-chamber circulation pump 48 is a conventional circulation pump. This structure is mainly used for multi-input and multi-output liquid transportation needs and has been widely used in the prior art. In the present invention, it is only used to realize the function of driving the circulation of the coolant, and its internal structure, operating principle, wiring, and control method are no longer described in detail.

[0030] Through the action of the multi-chamber circulation pump 48 and the cold water pipe 421, the low-temperature coolant at the lower part of the coolant storage box 31 is sent into the cold water tank 42, and is distributed into the distribution box 46 via the cold water tank 42. The coolant is distributed into the heat exchange component II 45 through the distribution box 46, and low-temperature exchange is carried out between the heat exchange component II 45 and the radar body 1. The heat-exchanged coolant will be discharged into the return water box 47, and is connected to the warm water pipe 431 through the warm water tank 43 communicated with the return water box 47. Finally, the multi-chamber circulation pump 48 pumps the coolant back to the upper side of the coolant storage box 31.

[0031] Further, to evenly distribute the coolant for heat exchange with the radar body 1, refer to Figure 4 and Figure 5 The heat exchange component II 45 includes a contact block 451 fixedly connected to the lower end of the distribution box 46 and the upper end of the return water box 47. The front part of the contact block 451 is a heat-conducting copper plate. Symmetrically fixed to the left and right sides of the inner surface of the contact block 451 are support plates 453. A number of heat exchange components 452 are linearly distributed and fixedly connected to the inner surface of the contact block 451. At the upper ends of both heat exchange components 452, there are communicated pipes II 454 that are communicated with the distribution box 46 and adjacent support plates 453. At the rear part of the lower end of the contact block 451, there is a notch communicated with the return water box 47.

[0032] The coolant entering the distribution box 46 will enter each heat exchange component 452 through the communicated pipe II 454. This low-temperature coolant will be evenly distributed into each heat exchange component 452. Thus, the coolant temperature in each heat exchange component 452 is relatively uniform, avoiding uneven heat dissipation caused thereby and reducing performance fluctuations caused by local overheating.

[0033] Further, to ensure that the coolant conducts sufficient heat exchange with the radar body 1 through the contact block 451, refer to Figure 6 and Figure 7 The heat exchange component 452 includes an I-shaped plate 4521. At the left end of the horizontal part of the I-shaped plate 4521, there is a communicated pipe I 4522 that is communicated with its right end and adjacent communicated pipes II 454. Linearly distributed on the inner surface of the communicated pipe I 4522 are a number of spray holes 4523 that are communicated with the front part of the upper end of the horizontal part of the I-shaped plate 4521. Check valves 4524 are fixedly installed on both the left and right sides of the communicated pipe I 4522. On the side of the I-shaped plate 4521 close to the radar body 1, a number of groups of spoiler plates are arranged at intervals along the spray holes 4523. At the upper part of the front end of the vertical part of the I-shaped plate 4521, there is an overflow port 4527 that is communicated with the rear end. At the position corresponding to the overflow port 4527 at the upper part of the rear end of the vertical part of the I-shaped plate 4521, a shielding cover 4528 is fixedly connected.

[0034] Further, to extend the heat exchange cycle of the coolant with the contact block 451, refer to Figure 6, the spoiler includes a J-shaped spoiler 4525 and an arc-shaped spoiler 4526 which are installed at the front end of the I-shaped plate 4521 and symmetrically distributed about the center of the water spray holes 4523. The arc-shaped parts of the two J-shaped spoilers 4525 face each other and open upward. An arc-shaped spoiler 4526 is fixedly connected to the upper side of each end of the two J-shaped spoilers 4525 away from the adjacent water spray holes 4523, and the arc-shaped spoiler 4526 opens downward.

[0035] The coolant will enter the first connecting pipe 4522 through the second connecting pipe 454. The check valve 4524 in the first connecting pipe 4522 realizes check by means of a spring. Thus, under a certain pressure, the coolant in the second connecting pipe 454 will not enter the first connecting pipe 4522. Instead, when the coolant in the distribution box 46 and the second connecting pipe 454 is under a certain pressure, it will enter the first connecting pipe 4522, thereby realizing the uniform distribution of the coolant to each heat exchange component 452 vertically distributed.

[0036] Furthermore, the coolant will be sprayed into the I-shaped plate 4521 from the water spray holes 4523, gradually fill the I-shaped plate 4521, and finally overflow to the rear of the contact block 451 through the overflow port 4527. Taking the water spray holes 4523 between the two arc-shaped spoilers 4526 as the center point, when the adjacent three water spray holes 4523 spray the coolant outward: The coolant on both sides will first impact between the two J-shaped spoilers 4525, and flow upward through the guiding and splitting effects of the J-shaped spoilers 4525. A part will flow upward between the two J-shaped spoilers 4525, and the other part will move to both sides and flow into the lower part of the arc-shaped spoilers 4526, flow downward in a swirl through the guiding effect of the arc-shaped spoilers 4526, and continue to move obliquely upward under the guiding effect of the upper arc surface of the J-shaped spoilers 4525; Thus, through the action of multiple arc-shaped spoilers 4526 and J-shaped spoilers 4525, the residence time of the coolant in the I-shaped plate 4521 and the heat exchange cycle are prolonged. At the same time, the movement speed of the flowing coolant molecules will also increase, and the heat exchange efficiency will relatively increase, thereby improving the heat dissipation efficiency.

[0037] The coolant after heat exchange will flow into the lower return water box 47 from the overflow port 4527 and the shielding cover 4528. The shielding cover 4528 is to prevent the high-temperature coolant flowing down from the upper overflow port 4527 from splashing into the lower I-shaped plate 4521.

[0038] Embodiment 3. On the basis of Embodiment 2, this embodiment further provides coolant into the distribution pipe 22 through the cold water tank 42 and the communication port 23, and sends the low-temperature coolant into the water curtain assembly 29 through the action of the water distribution pipe 24, and forms a water curtain through the water curtain assembly 29 to dissipate heat from the first heat exchange assembly 25, keeping the first heat exchange assembly 25 in a low-temperature state, and exchanging heat with the radar body 1 through the contact between the flat copper pipe 251 and the radar body 1, prompting the radar body 1 to maintain a low-temperature state. Through the water curtain effect, several first heat exchange assemblies 25 are kept uniformly at a low temperature, thereby ensuring the temperature uniformity and keeping the radar body 1 in a low-temperature state, reducing the performance attenuation caused by continuous high temperature.

[0039] Specifically, to realize the heat exchange between the low-temperature coolant and the side wall of the radar body 1, refer to Figure 8 and Figure 9 , the side heat dissipation structure 2 includes a side support box 21 fixedly connected to one side of the rear support box 41. The inner surface of the side support box 21 is fixedly connected with a partition plate 211. The side support box 21 is symmetrically provided with communication ports 23 at the upper and lower ends near the rear support box 41. The inner surface of the side support box 21 is symmetrically and fixedly connected with distribution pipes 22 communicating with the adjacent communication ports 23. One ends of the two distribution pipes 22 far from the radar body 1 penetrate through the partition plate 211 and extend to the side of the partition plate 211 far from the radar body 1 and are fixedly connected with a water distribution pipe 24. The inner surface of the partition plate 211 is linearly distributed and fixedly connected with several first heat exchange assemblies 25. A water curtain assembly 29 is fixedly connected to the side of the partition plate 211 far from the radar body 1. The lower part of the inner surface of the side support box 21 and the end of the partition plate 211 far from the radar body 1 are jointly fixedly connected with a separation net 28.

[0040] The partition plate 211 is used to separate two spaces. One is used for the first heat exchange assembly 25 to fit with the radar body 1, and the other is used for the water curtain assembly 29 to form a water curtain to exchange heat with the first heat exchange assembly 25 to keep the first heat exchange assembly 25 at a low temperature, thereby continuously dissipating heat from the radar body 1. The coolant enters the distribution pipe 22 and the water distribution pipe 24 through the upper communication port 23 and then drips downward. The heat-exchanged coolant passes through the separation net 28 and enters the lower water distribution pipe 24, and finally enters the warm water tank 43 through the distribution pipe 22 and the communication port 23 for circulation.

[0041] Further, to realize the heat exchange with the side wall of the radar body 1, refer to Figure 10 and Figure 11, the first heat exchange component 25 includes a flat copper tube 251 attached to the radar body 1. Symmetrically fixed to the upper and lower ends of the flat copper tube 251 are inclined tubes 253 that are inclined towards each other. The two inclined tubes 253 are distributed in a V shape in space, and their ends far from the flat copper tube 251 are jointly fixed to a heat exchange tube 254 located below the overflow hole 294. A number of outer spiral grooves 2541 are annularly distributed on the outer surface of the heat exchange tube 254, and a number of inner spiral grooves 2542 are annularly distributed on the inner surface of the heat exchange tube 254.

[0042] Furthermore, to promote the one-way circulation of the coolant in the flat copper tube 251, refer to Figure 11 , a limiting ring 2523 is fixedly connected to the upper part of the inner surface of the flat copper tube 251. A check baffle 252 that is slidably connected to the inner surface of the flat copper tube 251 is arranged above the limiting ring 2523. Four limiting columns 2521 that are slidably connected to the limiting ring 2523 are fixedly connected to the lower end of the check baffle 252 in a rectangular distribution. Spring rubber rings 2522 that are fixedly connected to the lower end of the limiting ring 2523 are fixedly connected to the lower parts of the outer surfaces of the four limiting columns 2521.

[0043] One side of the flat copper tube 251 is a flat hollow copper tube filled with some coolant. It is in close contact with the radar body 1. The flat pipe has a larger contact area, and thus a larger heat exchange area. Its upper and lower inclined tubes 253 are used for the internal coolant circulation. The evaporated coolant in the heat exchange pushes open the check baffle 252 and moves upward, and enters the upper inclined tube 253. At this time, the coolant dripping from the upper water distribution pipe 24 will exchange heat with the inclined tube 253, causing these coolants to condense and return to the flat copper tube 251 along the heat exchange tube 254 and the lower inclined tube 253; Furthermore, the flat copper tube 251, the inclined tubes 253, and the heat exchange tube 254 are all made of copper, and their heat exchange efficiency is relatively high. Heat in the copper tube tends to move towards the low-temperature part, thereby using the temperature difference to promote the cyclic transfer of heat in the copper tube.

[0044] The outer spiral grooves 2541 and inner spiral grooves 2542 provided on the inner and outer surfaces of the heat exchange tube 254 can increase the contact area between the water distribution pipe 24 and the coolants inside and outside, thereby accelerating the heat exchange efficiency.

[0045] Furthermore, to promote the coolant to form a water curtain to cool the first heat exchange component 25 and the coolant inside it, refer to Figure 12 , the water curtain component 29 includes a wedge-shaped block 291 fixedly connected to one end of the partition plate 211 away from the radar body 1. The wedge-shaped block 291 is trapezoidal, and a stop block 292 is fixedly connected to the intersection of its upper inclined surface and the vertical surface. A water blocking groove 293 is opened at the upper end of the stop block 292. A number of overflow holes 294 that communicate with the rear end of the stop block 292 are opened in the middle and lower part of the inner surface of the water blocking groove 293 away from the radar body 1. The inclined surface part of the wedge-shaped block 291 is located below the outlet of the water distribution pipe 24.

[0046] The coolant sprayed downward by the water distribution pipe 24 will flow above the wedge-shaped block 291 and exchange heat with the inclined pipe 253 in the groove formed by the wedge-shaped block 291 and the stop block 292, gradually extending upward and overflowing into the water blocking groove 293. There is a height difference between the bottom of the water blocking groove 293 and the overflow hole 294, and the coolant will overflow from the overflow hole 294 and form a water curtain moving downward, pouring on the surface of the heat exchange pipe 254 and exchanging heat with the coolant on its surface and inside, promoting the heat exchange pipe 254 to be in a low-temperature state and guiding the heat on the flat copper pipe 251 to transfer to the heat exchange pipe 254.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A liquid curtain type unmanned aerial vehicle laser radar heat dissipation device, comprising a radar body (1), characterized in that: A fluid heat dissipation structure (3) is fixedly mounted on the upper end of the radar body (1); a rear heat dissipation structure (4) in communication with the inner cavity of the fluid heat dissipation structure (3) is fixedly mounted on the rear end of the fluid heat dissipation structure (3); left and right ends of the rear heat dissipation structure (4) and left and right ends of the fluid heat dissipation structure (3) are jointly fixedly mounted with side heat dissipation structures (2) in communication with the inner cavity of the rear heat dissipation structure (4); the side heat dissipation structures (2) on both sides are tightly fitted to the left and right ends of the radar body (1), and the front end of the rear heat dissipation structure (4) is tightly fitted to the rear end of the radar body (1); The fluid heat dissipation structure (3) comprises a coolant storage box (31) fixedly connected to the front end of the rear heat dissipation structure (4); a plurality of hollow copper plates (32) are linearly distributed and fixedly connected to the inner surface of the coolant storage box (31); the upper ends of the plurality of hollow copper plates (32) extend through the inner cavity of the coolant storage box (31) to the upper end of the coolant storage box (31); and a plurality of protrusions (33) are linearly distributed and fixedly connected to the left and right ends of the plurality of coolant storage boxes (31).

2. According to claim 1, a liquid curtain type unmanned aerial vehicle laser radar heat dissipation device is characterized in that: The rear heat dissipation structure (4) comprises a rear support box (41) fixedly connected to the rear end of the coolant storage box (31); a heat exchange component 2 (45) is fixedly connected to the inner surface of the rear support box (41); a distribution box (46) and a return water box (47) are fixedly connected to the upper and lower ends of the heat exchange component 2 (45), respectively; a cold water tank (42) is provided at the upper left end of the rear support box (41) and is connected to the right end thereof and to the inner cavity of the distribution box (46); a warm water tank (43) is provided at the lower left end of the rear support box (41) and is connected to the right end thereof and to the inner cavity of the return water box (47); and both the distribution box (46) and the return water box (47) are connected to the heat exchange component 2 (45).

3. The liquid curtain type unmanned aerial vehicle laser radar heat dissipation device according to claim 2 is characterized in that: The second heat exchange component (45) comprises a contact block (451) fixedly connected to the lower end of the distribution box (46) and the upper end of the return water box (47); support plates (453) are symmetrically fixedly connected to the left and right sides of the inner surface of the contact block (451); a plurality of heat exchange components (452) are linearly distributed and fixedly connected to the inner surface of the contact block (451); the upper ends of the two heat exchange components (452) are each provided with a second connecting pipe (454) connected to the distribution box (46) and connected to the adjacent support plate (453); and the rear portion of the lower end of the contact block (451) is provided with a notch connected to the return water box (47).

4. The liquid curtain type unmanned aerial vehicle laser radar heat dissipation device according to claim 3 is characterized in that: The heat exchange component (452) comprises an I-shaped plate (4521), a connecting pipe 1 (4522) communicating with the right end and the adjacent connecting pipe 2 (454) is provided at the left end of the horizontal portion of the I-shaped plate (4521), a plurality of water spray holes (4523) communicating with the front portion of the upper end of the horizontal portion of the I-shaped plate (4521) are provided on the inner surface of the connecting pipe 1 (4522) in a linear distribution, a check valve (4524) is fixedly installed on both the left and right sides of the connecting pipe 1 (4522), a plurality of groups of spoilers are arranged at intervals along the water spray holes (4523) on a side of the I-shaped plate (4521) close to the radar body (1), an overflow port (4527) communicating with the rear end is provided at the upper front end of the vertical portion of the I-shaped plate (4521), and a shielding cover (4528) is fixedly connected to the upper rear end of the vertical portion of the I-shaped plate (4521) at a position corresponding to the overflow port (4527).

5. The liquid curtain type unmanned aerial vehicle laser radar heat dissipation device according to claim 4, characterized in that: The spoiler comprises a J-shaped spoiler (4525) and an arc-shaped spoiler (4526) which are installed at the front end of the I-shaped plate (4521) and are symmetrically distributed along the center of the water spray hole (4523). The arc-shaped parts of the two J-shaped spoilers (4525) are opposite to each other and open upward. The upper sides of the ends of the two J-shaped spoilers (4525) away from the adjacent water spray holes (4523) are fixedly connected with the arc-shaped spoiler (4526), ​​and the arc-shaped spoiler (4526) opens downward.

6. The liquid curtain type unmanned aerial vehicle laser radar heat dissipation device according to claim 2, characterized in that: A pump body mounting groove (44) is provided at the upper end of the rear support box (41); a multi-cavity circulation pump (48) is fixedly mounted on the inner surface of the pump body mounting groove (44); a warm water pipe (431) communicating with the inner cavity of the warm water tank (43) is fixedly connected to the rear end of the warm water tank (43); a cold water pipe (421) communicating with the inner cavity of the cold water tank (42) is fixedly connected to the rear end of the cold water tank (42); the warm water pipe (431) and the cold water pipe (421) are both connected to the inner cavity of the coolant storage box (31) through the multi-cavity circulation pump (48); an inlet of the warm water pipe (431) is located at the lower part of the coolant storage box (31); and an outlet of the cold water pipe (421) is located at the upper side of the coolant storage box (31).

7. The liquid curtain type unmanned aerial vehicle laser radar heat dissipation device according to claim 1, characterized in that: The side heat dissipation structure (2) comprises a side support box (21) fixedly connected to one side of the rear support box (41); a partition plate (211) is fixedly connected to the inner surface of the side support box (21); a communication opening (23) is symmetrically provided at one end of the side support box (21) close to the rear support box (41); distribution pipes (22) connected to adjacent communication openings (23) are fixedly connected to the inner surface of the side support box (21) symmetrically at one end; two distribution pipes (22) are connected at one end away from the radar body (1). They all penetrate the partition plate (211) and extend to a side of the partition plate (211) away from the radar body (1) and are fixedly connected to a water distribution pipe (24); a plurality of heat exchange components (25) are linearly distributed and fixedly connected to the inner surface of the partition plate (211); a water curtain component (29) is fixedly connected to the side of the partition plate (211) away from the radar body (1); and an isolation net (28) is fixedly connected to the lower portion of the inner surface of the side support box (21) and the end of the partition plate (211) away from the radar body (1).

8. The liquid curtain type unmanned aerial vehicle laser radar heat dissipation device according to claim 7, characterized in that: The water curtain assembly (29) comprises a wedge-shaped block (291) fixedly connected to one end of the partition plate (211) away from the radar body (1); the wedge-shaped block (291) is trapezoidal, and a stopper (292) is fixedly connected to the junction of the upper inclined surface and the vertical surface thereof; a water blocking groove (293) is provided at the upper end of the stopper (292); a plurality of overflow holes (294) connected to the rear end of the stopper (292) are provided at the middle and lower part of the inner surface of the water blocking groove (293) on the side away from the radar body (1); and the inclined surface portion of the wedge-shaped block (291) is located below the outlet of the water uniforming pipe (24).

9. The liquid curtain type unmanned aerial vehicle laser radar heat dissipation device according to claim 8, characterized in that: The heat exchange component 1 (25) comprises a flat copper tube (251) fitted with the radar body (1), the upper and lower ends of the flat copper tube (251) are symmetrically fixedly connected with mutually inclined tubes (253), the two inclined tubes (253) are V-shaped in spatial distribution, and the ends away from the flat copper tube (251) are commonly fixedly connected with a heat exchange tube (254) located below the overflow hole (294), the outer surface of the heat exchange tube (254) is provided with a plurality of outer spiral grooves (2541) distributed in an annular manner, and the inner surface of the heat exchange tube (254) is provided with a plurality of inner spiral grooves (2542) distributed in an annular manner.

10. The liquid curtain type unmanned aerial vehicle laser radar heat dissipation device according to claim 9, characterized in that: The upper portion of the inner surface of the flat copper tube (251) is fixedly connected to a limit ring (2523); the upper end of the limit ring (2523) is provided with a non-return baffle (252) slidably connected to the inner surface of the flat copper tube (251); the lower end of the non-return baffle (252) is rectangularly distributed and fixedly connected to four limit posts (2521) slidably connected to the limit ring (2523); the lower portions of the outer surfaces of the four limit posts (2521) are all fixedly connected to spring rubber rings (2522) fixedly connected to the lower end of the limit ring (2523).

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