Skin cooling system and vehicle

Abstract

The present application relates to the technical field of cooling equipment, and provides a skin cooling system and a vehicle.The skin cooling system comprises a ring-shaped cooler, the ring-shaped cooler is used for being sleeved on the outside of a vehicle body, the ring-shaped cooler and a heat source form a circulation loop, and the ring-shaped cooler is used for cooling medium in the heat source;the outer surface of the ring-shaped cooler is provided with a plurality of protrusions, the height of each protrusion can be adjusted to adjust the cooling capacity of the ring-shaped cooler.The skin cooling system can utilize the characteristic that the protrusions can disturb the flow, adjust the height of the protrusions, and then adjust the cooling capacity of the ring-shaped cooler, so that the cooling capacity of the ring-shaped cooler can be adaptively adjusted according to the specific working condition of the vehicle without setting a frequency conversion speed regulating device or a temperature regulating device, the structure of the cooling system is simplified, and the cost of the cooling system is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooling equipment, in particular to a skin cooling system and a vehicle. BACKGROUND

[0002] The cooling system is an important functional guarantee system for dissipating the heat of a moving platform such as a vehicle or an aircraft to the environment. The traditional cooling system introduces external cooling working medium into the interior of the cooling system through pipelines, and then cools the heat source through a cooler. This kind of cooling system occupies a large amount of effective space inside the vehicle, and the pipelines are complex.

[0003] In view of the above problems, relevant scholars have proposed external cooling technology to release internal space, achieve heat exchange by means of external water flow flushing, and do not need equipment driving, which has high reliability. However, the external cooling technology also has other problems, such as: in order to meet the variable working condition cooling load adjustment requirement, a variable frequency speed regulation device needs to be set to change the working medium flow of the intermediate circuit, which leads to a relatively complex composition of the cooling system; on the other hand, in order to meet the requirement of part of sensitive heat source for the inlet temperature of the intermediate circuit cooling water, a temperature regulation device needs to be set in the cooling system, which leads to a complex operation parameter regulation process. Therefore, it is urgent to provide an external cooling system with simple structure and simple operation process. SUMMARY

[0004] The present application provides a skin cooling system and a vehicle to solve the defects of the prior art that the external cooling system has a complex structure and a complex operation process.

[0005] The present application provides a skin cooling system, comprising a ring-shaped cooler, the ring-shaped cooler is used for being sleeved on the outside of a vehicle body, the ring-shaped cooler is used for forming a circulation loop with a heat source of the vehicle body, and the ring-shaped cooler is used for cooling a medium in the heat source; an outer surface of the ring-shaped cooler is provided with a plurality of protrusions, the height of each protrusion can be adjusted to adjust the cooling capacity of the ring-shaped cooler.

[0006] According to the skin cooling system provided by the present application, the outer surface of the ring-shaped cooler has thermal conductivity, and the protrusions have elasticity; wherein the height of the protrusion increases when the protrusion is at a temperature rise, and the height of the protrusion decreases when the protrusion is at a temperature drop.

[0007] According to the skin cooling system provided by the present application, the protrusions have cavities, the cavities are provided with a first phase change working medium, the first phase change working medium has an expansion state and a contraction state; the height of the protrusion increases when the first phase change working medium is in the expansion state, and the height of the protrusion decreases when the first phase change working medium is in the contraction state.

[0008] According to the skin cooling system provided by the application, the first phase-change working medium expands when the first phase-change working medium is in the heat absorption state, and the first phase-change working medium shrinks when the first phase-change working medium is in the heat release state.

[0009] According to the skin cooling system provided by the application, the protrusion is provided with a cavity, the cavity is provided with a telescopic column, one end of the telescopic column is connected with the outer surface of the annular cooler, and the other end of the telescopic column is connected with the protrusion; the telescopic column has an elongated state and a shortened state, the height of the protrusion increases when the telescopic column is in the elongated state, and the height of the protrusion decreases when the telescopic column is in the shortened state.

[0010] According to the skin cooling system provided by the application, the telescopic column is a thermal sensitive telescopic column, the telescopic column is elongated when the temperature of the telescopic column increases, and the telescopic column is shortened when the temperature of the telescopic column decreases.

[0011] According to the skin cooling system provided by the application, the protrusion is a hemispherical structure, and the first phase-change working medium is arranged in the hemispherical structure.

[0012] According to the skin cooling system provided by the application, the protrusion is a wedge-shaped structure, the telescopic column is arranged in the wedge-shaped structure, and one end of the telescopic column is connected with the tip of the wedge-shaped structure.

[0013] According to the skin cooling system provided by the application, the annular cooler comprises an annular pipeline, a first pipeline and a second pipeline, the annular pipeline comprises an inner wall and an outer wall, the inner wall is used for sleeving the aircraft, the outer wall is provided with a plurality of protrusions, an annular flow channel is formed between the inner wall and the outer wall, and the annular flow channel is filled with a second phase-change working medium; the first end of the first pipeline is used for communicating with the heat source, the second end of the first pipeline communicates with the annular flow channel; the first end of the second pipeline communicates with the annular flow channel, and the second end of the second pipeline communicates with the heat source; wherein the second phase-change working medium can absorb the heat of the medium in the heat source, so that the medium is condensed from a gaseous state to a liquid state.

[0014] The application further provides an aircraft, which comprises an aircraft body and the skin cooling system as described above, and the skin cooling system is sleeved on the outside of the aircraft body.

[0015] The skin cooling system provided by this invention features a protrusion on the outer surface of the annular cooler, the height of which is adjustable. This protrusion can turbulentize the incoming airflow, and by adjusting the height of the protrusion, the cooling capacity of the annular cooler can be adjusted. This eliminates the need for variable frequency speed control or temperature control equipment, allowing the cooling capacity of the annular cooler to be adaptively adjusted according to the specific operating conditions of the aircraft. This simplifies the structure of the cooling system and reduces its cost. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the skin cooling system provided by the present invention;

[0018] Figure 2 yes Figure 1 One of the structural schematic diagrams of the annular cooler shown in the image;

[0019] Figure 3 yes Figure 2 The diagram shows the structure of the protrusion.

[0020] Figure 4 yes Figure 2 The diagram shows the state changes of the protrusion.

[0021] Figure 5 yes Figure 1 The second schematic diagram of the annular cooler shown in the image;

[0022] Figure 6 yes Figure 5 The diagram shows the structure of the protrusion.

[0023] Figure 7 yes Figure 5 The diagram shows the state changes of the protrusion.

[0024] Figure 8 This is one of the flowcharts of the skin cooling system provided by the present invention;

[0025] Figure 9 This is the second flowchart of the skin cooling system provided by the present invention;

[0026] Figure label:

[0027] 10: Annular cooler; 11: Annular pipe; 12: Hemispherical structure; 13: First phase change working medium; 14: Wedge-shaped structure; 15: Telescopic column; 20: First pipeline; 30: Second pipeline; 100: Vehicle body; 101: Heat source; 111: Inner wall; 112: Outer wall; 121: Cavity. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0029] The terms "first" and "second" in the specification and claims of this invention may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0030] The following is combined with Figures 1-9 The skin cooling system and aircraft of the present invention are described.

[0031] like Figure 1 As shown, in an embodiment of the present invention, the skin cooling system includes an annular cooler 10. The annular cooler 10 is used to be fitted onto the outside of the vehicle body 100. The annular cooler 10 and the heat source 101 form a circulation loop. The annular cooler 10 is used to cool the medium in the heat source 101. The outer surface of the annular cooler 10 is provided with a plurality of protrusions, the height of each protrusion being adjustable to adjust the cooling capacity of the annular cooler 10.

[0032] Specifically, the annular cooler 10 is fitted onto the exterior of the vehicle body 100. The inner wall of the annular cooler 10 is attached to the outer surface of the vehicle body 100, and the outer wall of the annular cooler 10 is in contact with the incoming flow. The medium with a higher temperature in the heat source 101 enters the annular cooler 10, transferring heat to the annular cooler 10. The incoming flow washes over the annular cooler 10, cooling it and thus lowering the temperature of the medium. The cooled medium flows back into the heat source 101 to cool the heat source 101. The medium, after being reheated, re-enters the annular cooler 10, thereby continuously cooling the medium in the heat source 101.

[0033] Further, the outer wall of the annular cooler 10 is provided with a plurality of protrusions, the protrusions can disturb the airflow, in the embodiment, the height of the protrusions can be adjusted, when the height of the protrusions increases, the disturbance of the airflow by the protrusions increases, the contact area between the airflow and the protrusions increases, the cooling capacity of the annular cooler 10 increases, thereby further reducing the temperature of the medium; when the height of the protrusions decreases, the disturbance of the airflow by the protrusions decreases, the contact area between the airflow and the protrusions decreases, the cooling capacity of the annular cooler 10 decreases.

[0034] Specifically, when the heat load in the heat source 101 increases, or the temperature of the medium flowing back to the heat source 101 increases, after the medium enters the annular cooler 10, the temperature of the medium is high, the outer surface of the annular cooler 10 cannot release heat in time, the heat conducted to the protrusions increases, the height of the protrusions heated increases, the disturbance of the airflow by the protrusions increases, the cooling capacity of the annular cooler 10 increases, and the temperature of the medium flowing back to the heat source 101 further decreases; when the heat load in the heat source 101 decreases, or the temperature of the medium flowing back to the heat source 101 decreases, after the medium enters the annular cooler 10, the outer surface of the annular cooler 10 releases heat quickly under the scouring of the airflow, the temperature of the outer surface of the annular cooler 10 decreases, the temperature of the protrusions also decreases, so that the height of the protrusions decreases, the disturbance of the airflow by the protrusions decreases, the cooling capacity of the annular cooler 10 decreases, and the temperature of the medium flowing back to the heat source 101 increases.

[0035] Optionally, in an embodiment of the present application, the protrusions are elastic, and the protrusions are provided with phase change working medium, when the phase change working medium in the protrusions absorbs heat and expands in volume, the protrusions are driven to increase in volume and height; when the phase change working medium in the protrusions releases heat and shrinks in volume, the protrusions are driven to decrease in volume and height.

[0036] Optionally, in another embodiment of the present application, the protrusions are elastic, and the protrusions are provided with heat-sensitive material, when the heat-sensitive material increases in temperature, the heat-sensitive material elongates, driving the height of the protrusions to increase; when the heat-sensitive material decreases in temperature, the heat-sensitive material shortens, driving the height of the protrusions to decrease.

[0037] The skin cooling system provided by the embodiment of the present application can adjust the cooling capacity of the annular cooler by designing protrusions on the outer surface of the annular cooler and adjusting the height of the protrusions, and can adjust the cooling capacity of the annular cooler by utilizing the characteristic that the protrusions can disturb the airflow, without the need of frequency conversion speed regulation equipment or temperature regulation equipment, so that the cooling capacity of the annular cooler can be adaptively adjusted according to the specific working condition of the aircraft, the structure of the cooling system is simplified, and the cost of the cooling system is reduced.

[0038] As Figure 2As shown, in the embodiment of the present application, the annular cooler 10 comprises an annular duct 11, a first pipe 20 and a second pipe 30. The annular duct 11 comprises an inner wall 111 and an outer wall 112, the inner wall 111 is used to be sleeved with the aircraft body 100, the outer wall 112 is provided with a plurality of protrusions, an annular flow channel is formed between the inner wall 111 and the outer wall 112, and the annular flow channel is filled with a second phase change working medium. The second phase change working medium can absorb the heat of the medium in the heat source 101 to condense the medium from a gaseous state to a liquid state. The first end of the first pipe 20 is used to communicate with the heat source 101, and the second end of the first pipe 20 communicates with the annular flow channel. The first end of the second pipe 30 communicates with the annular flow channel, and the second end of the second pipe 30 communicates with the heat source 101.

[0039] Specifically, the medium in the gaseous state in the heat source 101 enters the annular duct 11 through the first pipe 20, the second phase change working medium absorbs the heat of the medium to condense the medium from a gaseous state to a liquid state, and the second phase change working medium conducts the heat to the outer wall 112 of the annular duct 11, which is washed and absorbed by the flow. The liquid medium flows back to the heat source 101 through the second pipe 30 to continue to cool the heat source 101.

[0040] Further, in the embodiment of the present application, the outer surface of the annular cooler 10 has thermal conductivity, and the protrusions have elasticity. When the protrusions are at a temperature rise, the height of the protrusions increases, and when the protrusions are at a temperature drop, the height of the protrusions decreases.

[0041] Specifically, in the present embodiment, the outer wall 112 of the annular duct 11 has thermal conductivity, when the heat load in the heat source 101 increases or the temperature of the medium flowing back to the heat source 101 increases, after the medium enters the annular duct 11, the outer wall of the annular duct 11 cannot dissipate heat in time, the heat conducted to the protrusions increases, the height of the protrusions increases after being heated, the disturbance of the protrusions to the flow is improved, thereby improving the cooling capacity of the annular cooler 10, and the temperature of the medium flowing back to the heat source 101 decreases.

[0042] When the heat load in the heat source 101 decreases or the temperature of the medium flowing back to the heat source 101 decreases, after the medium enters the annular duct 11, the outer wall 112 of the annular duct 11 dissipates heat faster, the temperature of the outer wall 112 of the annular duct 11 decreases, and the temperature of the protrusions also decreases, so that the height of the protrusions decreases, thereby reducing the contact area of the protrusions with the flow, thereby reducing the cooling capacity of the annular cooler 10, and the temperature of the medium flowing back to the heat source 101 increases.

[0043] As Figure 3As shown in the figure, in one embodiment of the present application, the protrusion has a cavity 121, which is filled with a first phase change working medium 13 having thermal conductivity. The first phase change working medium 13 has an expanded state and a contracted state. When the first phase change working medium 13 is in the expanded state, the height of the protrusion increases; when the first phase change working medium 13 is in the contracted state, the height of the protrusion decreases.

[0044] Specifically, as shown in the figure, wherein (b) is a schematic view of the protrusion and the first phase change working medium 13 in the reference state; (a) is a schematic view of the protrusion and the first phase change working medium 13 in the expanded state; (c) is a schematic view of the protrusion and the first phase change working medium 13 in the contracted state. Figure 4 As shown in the figure, when the heat load in the heat source 101 increases or the temperature of the medium flowing back into the heat source 101 rises, after the medium enters the annular pipeline 11, the outer wall 112 of the annular pipeline 11 cannot release the heat in the annular pipeline 11 in time, thereby causing the temperature of the outer wall 112 of the annular pipeline 11 to rise, and the heat conducted into the protrusion through the outer wall 112 of the annular pipeline 11 increases, as shown in the figure (a), the first phase change working medium 13 expands in volume continuously under the heat, causing the volume of the protrusion to expand, the height of the protrusion to increase, and the disturbance of the protrusion to the flow to increase, thereby improving the cooling capacity of the annular cooler 10, reducing the temperature of the outer wall 112 of the annular pipeline 11 and the temperature of the second phase change working medium, and finally reaching an equilibrium state, so that the cooling capacity of the annular cooler 10 meets the heat load dissipation capacity of the heat source 101.

[0045] Figure 8 As shown in the figure, when the heat load in the heat source 101 decreases or the temperature of the medium flowing back into the heat source 101 decreases, the heat released through the outer wall 112 of the annular pipeline 11 is higher than the designed heat load of the heat source 101, which will cause the temperature of the second phase change working medium in the annular pipeline 11 to decrease, thereby causing the temperature of the outer wall 112 of the annular pipeline 11 to decrease, and the heat conducted into the protrusion through the outer wall 112 of the annular pipeline 11 to decrease, as shown in the figure (c), the volume of the first phase change working medium 13 in the protrusion changes from the reference state to the contracted state, the volume of the first phase change working medium 13 dispersed in the cavity 121 of the protrusion contracts, causing the wall of the protrusion to contract, the height of the protrusion to decrease continuously, the disturbance of the protrusion to the flow to weaken, and the cooling capacity of the annular cooler 10 to decrease, thereby causing the temperature of the second phase change working medium in the annular pipeline 11 and the temperature of the outer wall 112 of the annular pipeline 11 to rise slightly, and finally reaching an equilibrium state, so that the cooling capacity of the annular cooler 10 meets the heat load dissipation capacity of the heat source 101. Figure 4

[0046] As shown in the figure, when the heat load in the heat source 101 decreases or the temperature of the medium flowing back into the heat source 101 decreases, the heat released through the outer wall 112 of the annular pipeline 11 is higher than the designed heat load of the heat source 101, which will cause the temperature of the second phase change working medium in the annular pipeline 11 to decrease, thereby causing the temperature of the outer wall 112 of the annular pipeline 11 to decrease, and the heat conducted into the protrusion through the outer wall 112 of the annular pipeline 11 to decrease, as shown in the figure (c), the volume of the first phase change working medium 13 in the protrusion changes from the reference state to the contracted state, the volume of the first phase change working medium 13 dispersed in the cavity 121 of the protrusion contracts, causing the wall of the protrusion to contract, the height of the protrusion to decrease continuously, the disturbance of the protrusion to the flow to weaken, and the cooling capacity of the annular cooler 10 to decrease, thereby causing the temperature of the second phase change working medium in the annular pipeline 11 and the temperature of the outer wall 112 of the annular pipeline 11 to rise slightly, and finally reaching an equilibrium state, so that the cooling capacity of the annular cooler 10 meets the heat load dissipation capacity of the heat source 101. Figure 9 Figure 4

[0047] ​​​​Furthermore, in an embodiment of the present invention, when the first phase change working fluid 13 is in an endothermic state, the first phase change working fluid expands; when the first phase change working fluid 13 is in an exothermic state, the first phase change working fluid contracts.

[0048] Specifically, the first phase change working medium 13 can be a solid-gas phase change material or a liquid-gas phase change material. When the temperature of the outer wall 112 of the annular pipe 11 rises, the first phase change working medium 13 absorbs heat and changes from a solid or liquid state to a gaseous state, expanding in volume; when the temperature of the outer wall 112 of the annular pipe 11 decreases, the first phase change working medium 13 releases heat and changes from a gaseous state to a liquid or solid state, shrinking in volume.

[0049] Optionally, in embodiments of the present invention, the first phase change working medium 13 and the second phase change working medium can be room temperature phase change materials such as high thermal conductivity phase change silicone grease, polyethylene glycol or polyoxymethylene.

[0050] Furthermore, in the above embodiments, the protrusion is a hemispherical structure 12, and a first phase change working fluid is disposed within the hemispherical structure 12. Specifically, the cavity 121 within the protrusion is also hemispherical, and the first phase change working fluid 13 is filled within the hemispherical cavity. Compared to protrusions of other shapes, the hemispherical protrusion has a larger surface area. When the hemispherical protrusion expands or contracts, its contact area with the incoming flow changes significantly, which has a greater impact on the cooling capacity of the annular cooler 10. This allows the cooling capacity of the annular cooler 10 to be adaptively adjusted according to the operating conditions of the aircraft.

[0051] like Figure 5 As shown, in another embodiment of the present invention, the protrusion has a cavity 121, and a telescopic column 15 is provided in the cavity 121. One end of the telescopic column 15 is connected to the outer surface of the annular cooler 10, and the other end of the telescopic column 15 is connected to the protrusion. The telescopic column 15 has an extended state and a shortened state. When the telescopic column 15 is in the extended state, the height of the protrusion increases, and when the telescopic column 15 is in the shortened state, the height of the protrusion decreases.

[0052] Specifically, such as Figure 7 As shown, (b) is a schematic diagram of the protrusion and telescopic column 15 in the reference state; (a) is a schematic diagram of the protrusion and telescopic column in the extended state; and (c) is a schematic diagram of the protrusion and telescopic column 15 in the shortened state.

[0053] like Figure 8 As shown, when the heat load in the heat source 101 increases or the temperature of the medium flowing back into the heat source 101 rises, after the medium enters the annular pipe 11, the outer wall 112 of the annular pipe 11 cannot release the heat in the annular pipe 11 in time, which in turn causes the temperature of the outer wall 112 of the annular pipe 11 to rise, resulting in an increase in the heat conducted through the outer wall 112 of the annular pipe 11 to the protrusion, such as... Figure 7(a) as shown, the length of the telescopic column 15 is constantly lengthened by the heat, which drives the height of the protrusion to increase, the disturbance of the flow by the protrusion is enhanced, the cooling capacity of the annular cooler 10 is improved, the temperature of the outer wall 112 of the annular pipe 11 and the second phase-change working medium is reduced, and finally the balance state is reached, and the cooling capacity of the annular cooler 10 meets the heat load leading-out capacity of the heat source 101.

[0054] As shown in Figure 9 when the heat load of the heat source is reduced or the temperature of the medium flowing back to the heat source 101 is reduced, the heat released by the outer wall 112 of the annular pipe 11 is higher than the design heat load of the heat source 101, which will cause the temperature of the second phase-change working medium in the annular pipe 11 to be reduced, and then the temperature of the outer wall 112 of the annular pipe 11 is reduced, and the heat conducted to the protrusion through the outer wall 112 of the annular pipe 11 is reduced, as shown in Figure 7 (c), the length of the telescopic column 15 in the protrusion changes from the reference state to the shortened state, which drives the height of the protrusion to be constantly reduced, the disturbance of the flow by the protrusion is weakened, the cooling capacity of the annular cooler 10 is reduced, the temperature of the second phase-change working medium in the annular pipe 11 and the outer wall 112 of the annular pipe 11 is slightly increased, and finally the balance state is reached, and the cooling capacity of the annular cooler 10 meets the heat load leading-out capacity of the heat source 101.

[0055] Further, in the above-mentioned embodiment, the telescopic column 15 is a heat-sensitive telescopic column, which is lengthened when the temperature of the telescopic column 15 is increased, and is shortened when the temperature of the telescopic column 15 is reduced.

[0056] As shown in Figure 6 in the embodiment of the present application, the protrusion is a sharp wedge structure 14, and the telescopic column 15 is arranged in the sharp wedge structure 14, one end of the telescopic column 15 is connected with the tip of the sharp wedge structure 14.

[0057] Specifically, in the present embodiment, when the temperature of the outer wall 112 of the annular pipe 11 is increased, the temperature of the telescopic column 15 is increased, and the length of the telescopic column 15 is constantly lengthened, which drives the height of the protrusion to be increased, since the protrusion is a sharp wedge structure 14, in the process of the height of the protrusion being increased, the surface area of the protrusion is gradually increased, the contact area of the protrusion with the flow is increased, and then the cooling capacity of the annular cooler 10 is improved; when the temperature of the outer wall 112 of the annular pipe 11 is reduced, the temperature of the telescopic column 15 is reduced, and the length of the telescopic column 15 is constantly shortened, which drives the height of the protrusion to be reduced, in the process of the height of the protrusion being reduced, the surface area of the protrusion is gradually reduced, the contact area of the protrusion with the flow is reduced, and then the cooling capacity of the annular cooler 10 is reduced.

[0058] The embodiment of the present application also provides a vehicle, which comprises a vehicle body 100 and a skin cooling system.

[0059] Specifically, the annular cooler 10 is arranged outside the vehicle body 100, the inner wall of the annular cooler 10 is attached to the outer surface of the vehicle body 100, and the outer wall of the annular cooler 10 is in contact with the airflow. The medium with a high temperature in the heat source 101 enters the annular cooler 10, transfers heat to the annular cooler 10, and is cooled by the airflow flushing the annular cooler 10, so that the temperature of the medium is reduced. The medium after cooling flows back to the heat source 101, and the medium after being heated again continues to enter the annular cooler 10, so that the medium in the heat source 101 is continuously cooled.

[0060] Further, the outer wall of the annular cooler 10 is provided with a plurality of protrusions, which can disturb the airflow. In the embodiment, the height of the protrusions can be adjusted. When the height of the protrusions increases, the disturbance effect of the protrusions on the airflow increases, the contact area between the airflow and the protrusions increases, and the cooling capacity of the annular cooler 10 increases, so that the temperature of the medium is further reduced. When the height of the protrusions decreases, the disturbance effect of the protrusions on the airflow decreases, the contact area between the airflow and the protrusions decreases, and the cooling capacity of the annular cooler 10 decreases.

[0061] Specifically, when the heat load in the heat source 101 increases or the temperature of the medium flowing back to the heat source 101 increases, the temperature of the medium entering the annular cooler 10 is high, the outer surface of the annular cooler 10 cannot release heat in time, the heat conducted to the protrusions increases, the height of the protrusions increases, the disturbance effect of the protrusions on the airflow increases, the cooling capacity of the annular cooler 10 increases, and the temperature of the medium flowing back to the heat source 101 further decreases. When the heat load in the heat source 101 decreases or the temperature of the medium flowing back to the heat source 101 decreases, the outer surface of the annular cooler 10 releases heat quickly under the flushing of the airflow, the temperature of the outer surface of the annular cooler 10 decreases, the temperature of the protrusions decreases, the height of the protrusions decreases, the disturbance effect of the protrusions decreases, the cooling capacity of the annular cooler 10 decreases, and the temperature of the medium flowing back to the heat source 101 increases.

[0062] The vehicle provided by the embodiment of the present application has the skin cooling system arranged outside the vehicle body, the skin cooling system can adjust its cooling capacity, the cooling capacity can be adaptively adjusted according to the specific working condition of the vehicle without the frequency conversion speed regulation device or the temperature regulation device, the structure of the cooling system in the vehicle is simplified, and the cost of the vehicle is reduced.

[0063] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; and although the present application has been described in detail with reference to the foregoing embodiments, it should be appreciated by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A skin cooling system characterized by, The application relates to a skin cooling system for an aircraft, comprising: a ring-shaped cooler, which is arranged outside the aircraft body and is used to form a circulation loop with a heat source of the aircraft body and to cool a medium in the heat source; an outer surface of the ring-shaped cooler is provided with a plurality of protrusions, a height of each protrusion can be adjusted to adjust the cooling capacity of the ring-shaped cooler; the outer surface of the ring-shaped cooler has heat conductivity, and the protrusions have elasticity; when the temperature of the protrusions is increased, the height of the protrusions is increased, and when the temperature of the protrusions is decreased, the height of the protrusions is decreased; the protrusions have cavities, the cavities are provided with first phase-change working medium, the first phase-change working medium has an expansion state and a contraction state; when the first phase-change working medium is in the expansion state, the height of the protrusions is increased, and when the first phase-change working medium is in the contraction state, the height of the protrusions is decreased; when the first phase-change working medium is in a heat absorption state, the first phase-change working medium is expanded, and when the first phase-change working medium is in a heat release state, the first phase-change working medium is contracted; the ring-shaped cooler comprises a ring-shaped pipeline, the ring-shaped pipeline comprises an inner wall and an outer wall, the inner wall is used to be connected with the aircraft, the outer wall is provided with a plurality of protrusions, and an annular flow channel is formed between the inner wall and the outer wall and filled with second phase-change working medium.

2. The skin cooling system of claim 1, wherein, The protrusions are in a semispherical structure, and the semispherical structure is provided with the first phase-change working medium.

3. The skin cooling system of claim 1, wherein, The ring-shaped cooler further comprises: a first pipeline, a first end of the first pipeline is used to communicate with the heat source, and a second end of the first pipeline communicates with the annular flow channel; a second pipeline, a first end of the second pipeline communicates with the annular flow channel, and a second end of the second pipeline communicates with the heat source; wherein the second phase-change working medium can absorb heat of the medium in the heat source to condense the medium from a gaseous state to a liquid state.

4. A vehicle, characterized by The application relates to a skin cooling system for an aircraft, comprising: an aircraft body and the skin cooling system according to any one of claims 1-3, which is arranged outside the aircraft body.

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