A thermal management system with infrared stealth and heat dissipation functions

Abstract

The present invention discloses a thermal management system with infrared stealth and heat dissipation functions, comprising a control and driving module, a heat exchange module, a cooling module, a stealth module covered on the outside of a heat source device, and a louver heat absorption module arranged on the stealth module, wherein the louver heat absorption module is arranged toward the heat dissipation outlet of the heat source device; the control and driving module and the heat exchange module are arranged away from the heat source device, the cooling module is filled with a circulating refrigerant, and the circulating refrigerant is driven by the control and driving module, passes through the heat exchange module and the cooling module, and enters the stealth module and the louver heat absorption module, controls the outer surface temperature of the stealth module to adapt to the ambient temperature, and absorbs the heat radiated from the heat dissipation outlet of the heat source device; the thermal management system with infrared stealth and heat dissipation functions of the present invention solves the internal heat dissipation problem of heat source equipment that needs to be stealth in the prior art, while ensuring the infrared stealth function of the heat source equipment.

Description

Technical Field

[0001] The present invention belongs to the field of infrared stealth technology, and more particularly relates to a thermal management system with both infrared stealth and heat dissipation functions. Background Art

[0002] With the rapid development of detection and reconnaissance technology, in order to counter infrared detection, various detection technologies are being applied to the current battlefield. Infrared stealth technology is to weaken the infrared thermal characteristic signal of the target by certain means, making it equivalent to the environmental background, thereby reducing the probability of enemy detectors detecting it, and then reducing the threat of infrared guided weapons to the target, and increasing the target's survival probability. There are two main technical ways to achieve target infrared stealth: reducing the target surface temperature and adjusting the surface emissivity.

[0003] Lowering the target's surface temperature and adjusting its surface emissivity both achieve low detectability by modifying the structural design and applying infrared physics principles to attenuate the energy absorbed by the target's infrared radiation. Operating equipment, due to differences in its own thermal inertia and surface material radiation properties compared to the background, respond differently to environmental changes (such as solar radiation and air temperature changes), resulting in significant differences in the infrared radiation characteristics of the target and background. Furthermore, a target remains in a heat source state for a considerable period of time after maneuvering or cessation of movement. The temperature difference between the heat source target and the background can reach as high as 100 degrees Celsius, easily becoming a significant indicator of exposure. Therefore, controlling the surface temperature of the heat source target, reducing the temperature difference between the target and the background, and reducing the heat source target's infrared radiation are key methods of infrared stealth.

[0004] To control the surface temperature of a heat source, a common method is to add multiple layers of insulation material to the target surface to create a thermal infrared camouflage barrier. This blocks a significant amount of heat from reaching the target surface, reducing the target's infrared signature. This approach requires significant space and increases the device's outer diameter. Furthermore, the surface temperature of the heat source device cannot adapt to environmental changes, resulting in a lack of environmental responsiveness. Furthermore, the surface temperature of the heat source itself varies widely, making it less uniform. Furthermore, this surface temperature control method makes it difficult to dissipate heat where it is needed, potentially leading to severe localized overheating and even device damage.

[0005] To solve the above problems, the commonly used methods are to use air ducts to change the direction of heat conduction and conduct the heat to the bottom of the heat source device, or to change the heat dissipation structure and the direction of the heat dissipation duct, and use air convection to transfer the heat from the heat source device to the surrounding air in a direction that is difficult to detect, thereby reducing the surface temperature of the heat source device. However, these methods can only be used locally on the heat source target and cannot completely cover the heat source surface. In addition, these heat dissipation methods all have the problem of insufficient heat dissipation inside the heat source device, resulting in a still very high temperature inside the heat source device, affecting the normal operation of the target. In particular, when the ambient temperature is very high, the components inside the heat source device cannot operate normally. Moreover, when the heat is conducted to the bottom of the target, the infrared characteristics of the bottom of the heat source device will be obvious, and the overall temperature uniformity of the target will be poor. Summary of the Invention

[0006] The purpose of the present invention is to provide a thermal management system with infrared stealth and heat dissipation functions, so as to solve the internal heat dissipation problem of heat source equipment that needs to be stealthed in the prior art, while ensuring that the heat source equipment realizes the infrared stealth function.

[0007] The technical solution of the present invention is a thermal management system with infrared stealth and heat dissipation functions, comprising a control and drive module, a heat exchange module, a cooling conduction module, a stealth module covered on the outside of a heat source device, and a louver heat absorption module provided on the stealth module, wherein the louver heat absorption module is arranged toward a heat dissipation outlet of the heat source device; the control and drive module and the heat exchange module are arranged away from the heat source device, the cooling conduction module is filled with a circulating refrigerant, the circulating refrigerant is driven by the control and drive module, passes through the heat exchange module and the cooling conduction module, and enters the stealth module and the louver heat absorption module, controls the outer surface temperature of the stealth module to adapt to the ambient temperature, and absorbs the heat radiated from the heat dissipation outlet of the heat source device;

[0008] The stealth module includes a shell covering the outside of the heat source device, a heat insulation component placed on the inner surface of the shell, and a first heat exchange tube arranged between the heat insulation component and the inner surface of the shell. The first heat exchange tube is connected to the cooling module. The refrigerant circulating in the first heat exchange tube absorbs the heat radiated from the heat source device to the shell.

[0009] The shell is provided with a shell heat dissipation port connected to the heat dissipation port of the heat source equipment. The louver heat absorption module includes a louver assembly arranged at the position of the shell heat dissipation port and a second heat exchange tube fixed on the louver assembly. The second heat exchange tube is connected to the cooling module; the refrigerant circulating in the second heat exchange tube absorbs the heat radiated outward from the heat source equipment from the position of the louver assembly.

[0010] Preferably, the louver assembly includes a plurality of louvers arranged in an inclined shape, and the louvers extend inward from the outer surface of the shell. The second heat exchange tube can be detachably fixed on each louver, and the second heat exchange tube is evenly distributed on the surface of the louver in a coiled shape, and each second heat exchange tube is connected in series or in parallel.

[0011] Preferably, the louver is arranged in an inclined downward shape, with the inner end lower than the outer end, and the second heat exchange tube is arranged on the upper surface of the louver.

[0012] Preferably, the louver is arranged in an inclined downward shape, with the inner end lower than the outer end, and the second heat exchange tube is arranged on the lower surface of the louver.

[0013] Preferably, the louver is arranged in an upwardly inclined shape, with the inner end higher than the outer end, and the second heat exchange tube is arranged on the lower surface of the louver.

[0014] Preferably, a second heat exchange tube shielding strip is further provided on the side of the louver plate on which the second heat exchange tube is provided, and the second heat exchange tube shielding strip is provided at the outer end position of the louver plate.

[0015] Preferably, the second heat exchange tube shielding strip is integrally formed with the louver plate, the louver plate is made of one of copper, aluminum and alloy, and the second heat exchange tube and the first heat exchange tube are both made of one of copper, aluminum and alloy.

[0016] Preferably, the circulating refrigerant is ethylene glycol coolant or methylene glycol coolant, the heat exchange module includes a sealed heat exchanger and a fan for dissipating heat from the heat exchanger, and the ethylene glycol coolant or methylene glycol coolant is filled in the heat exchanger; the cooling module includes a plurality of heat-insulating pipes, which connect the heat exchanger, the second heat exchange tube and the first heat exchange tube, and the first heat exchange tube and the second heat exchange tube are connected in parallel or in series.

[0017] Preferably, the control and drive module includes a circulation pump, a flow control valve and a control unit. The inlet and outlet of the circulation pump are respectively connected to the insulated conduit. The flow control valve is arranged on the outlet side of the circulation pump. The control unit includes a controller, an ambient temperature sensor and several louver temperature sensors respectively arranged on the louver and a shell temperature sensor fixed on the outer surface of the shell. The louver temperature sensor is arranged in the middle of the louver. The controller controls the flow of the flow control valve.

[0018] Preferably, the insulation component is an insulation board, which is made of insulation material, and the insulation material is one of aerogel insulation material, rubber-plastic insulation material, and foamed polyurethane; insulation boards of appropriate size are fixed on each inner surface of the shell; the outer plate is made of copper, aluminum and alloy.

[0019] The technical solution of the present invention is a thermal management system with infrared stealth and heat dissipation functions, which has the beneficial effects of: a stealth module is arranged outside the heat source device, a shell heat dissipation port connected to the heat source device heat dissipation port is arranged on the stealth module, and a louver heat absorption module is arranged at the shell heat dissipation port position, the louver heat absorption module includes a louver arranged on the heat source device and a second heat exchange tube arranged on the louver, so that the hot air inside the heat source device is convected outward and discharged outward through the louver position, and when the hot air reaches the louver position, the circulating refrigerant in the second heat exchange tube absorbs the heat in the hot air in time, which is equivalent to moving the heat convection position into the heat source device, and the heat in the air discharged outward through the louver position has been absorbed, which effectively ensures the heat dissipation of the heat source device, and also effectively avoids the problem of heat in the heat source device being radiated into the air from other positions, that is, while ensuring the heat dissipation of the heat source device, ensuring that the outer surface temperature of the stealth module is adapted to the ambient temperature, ensuring the low infrared detectability of the stealth module, and realizing the stealth of the heat source device placed inside the stealth module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a thermal management system that has both infrared stealth and heat dissipation functions in this technical solution.

[0021] Figure 2 This is the appearance diagram of the location of the louver heat absorption module set on the heat source equipment.

[0022] Figure 3 This is a structural diagram of the louver heat absorption module in this technical solution.

[0023] Figure 4 for Figure 3 , which is a schematic diagram of the first embodiment of the louver heat absorption module in this technical solution.

[0024] Figure 5 This is a schematic diagram of the second embodiment of the louver heat absorption module in this technical solution.

[0025] Figure 6 This is a schematic diagram of the third embodiment of the louver heat absorption module in this technical solution.

[0026] Figure 7 This is a schematic diagram of the installation of the second heat exchange tube in this technical solution. DETAILED DESCRIPTION

[0027] To facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention is further described in conjunction with specific embodiments and the accompanying drawings.

[0028] When a heat source device (requiring a stealth device) is in operation, or for a considerable period of time after operation, its interior will be at a relatively high temperature, and the internal heat will radiate outward. Even if the heat source device is wrapped with insulation material, a small amount of heat from the interior of the heat source device will still radiate outward through the insulation material, or cause the temperature of different locations on the outer surface of the insulation material to be inconsistent. If there is a large temperature difference between the outer surface temperature of the insulation material and the ambient temperature, it will be detected by the infrared detection equipment and become an obvious exposure sign. Alternatively, if the temperature of different locations on the insulation material is uneven, and there is a large temperature difference in some areas, it will also be detected by the infrared detection equipment, and the heat source device will be exposed.

[0029] At the same time, wrapping the heat source equipment with insulation materials is not conducive to the heat dissipation inside the heat source equipment. Some important components or high-heating structural components inside the heat source equipment need to be cooled in time, otherwise they will be damaged or burned out by high temperatures, such as engines, motors, pumps, control motherboards, control chips, etc. To solve this problem, heat source equipment heat dissipation ports are generally set on the heat source equipment to ensure normal heat dissipation of the heat source equipment, ensure the normal operation of the heat source equipment, and extend the service life of the heat source equipment.

[0030] Generally, before the heat source device 100 is started, its outer surface temperature is mainly determined by the ambient temperature, that is, before the heat source device 100 is started, its surface temperature is adapted to the ambient temperature, and the temperature of the stealth module covered on the outside of the heat source device is also mainly determined and controlled by the ambient temperature and adapted to the ambient temperature. After the heat source device 100 is started, its internal components are in operation, generating heat, and its internal temperature remains at a certain high temperature for a considerable period of time after the heat source device 100 stops working. In order to ensure that the internal components of the heat source device 100 operate normally and avoid the problem of shutdown failure or damage of the internal components of the heat source device 100 due to high temperature, a heat source device heat dissipation port is provided on the heat source device 100 to achieve heat dissipation of the heat source device. According to the principle of heat transfer, the internal heat of the heat source device 100 will inevitably radiate outwards through the surface of the heat source device 100, and will also inevitably be convected outwards through the heat source device heat dissipation port 103 on the heat source device 100. This will cause the outer surface temperature of the heat source device 100 to rise, or cause local high temperature at the heat source device's heat dissipation outlet, making the heat source device 100 easily detectable by infrared detection equipment. To solve this problem, the present invention proposes a thermal management system that has both infrared stealth and heat dissipation functions.

[0031] like Figure 1As shown, the present invention provides a thermal management system that combines infrared stealth with heat dissipation. The system comprises a control and drive module 5, a heat exchange module 2, a cooling module 8, a stealth module 20 positioned externally of a heat source device 100 (the device to be cloaked), and a louvered heat absorption module 1 mounted on the stealth module 20. The louvered heat absorption module 1 is positioned toward the heat source device's heat dissipation outlet. The control and drive module 5 and heat exchange module 2 are positioned away from the heat source device 100, and the cooling module 8 is filled with circulating refrigerant. The circulating refrigerant is driven by the control and drive module 5, passes through the heat exchange module 2 and the cooling module 8, and enters the stealth module 20 and the louver heat absorption module 1. According to the ambient temperature, the circulating refrigerant in the stealth module 20 absorbs the heat radiated from the heat source device to the stealth module 20, and controls the outer surface temperature of the stealth module 20 to adapt to the ambient temperature, while the circulating refrigerant in the louver heat absorption module 1 absorbs the heat radiated from the heat source device to the position of the louver heat absorption module 1, preventing the heat emitted from the heat source device from the heat source device directly into the air, thereby avoiding exposure of the heat source device.

[0032] Based on the above technical solution, the heat generated in the heat source device 100 is first discharged outward from the heat source device heat dissipation vent 103 on the heat source device 100 through air convection. When the hot air flows to the louver heat absorption module 1, the heat on the louver heat absorption module 1 is promptly absorbed by the louver heat absorption module 1. Therefore, the setting of the louver heat absorption module 1, on the one hand, realizes the timely absorption of the heat generated inside the heat source device 100, and realizes and ensures the internal heat dissipation of the heat source device; on the other hand, it absorbs the heat in the convective air passing through the position of the louver heat absorption module 1, and moves the original hot air convection position of the heat source device to the position of the louver heat absorption module 1, avoiding air convection outside the heat source device, avoiding local high temperature around the heat source device, and being detected by the infrared detector, avoiding indirect exposure of the heat source device; on the other hand, through timely internal heat dissipation and absorption of heat in the hot air, the internal temperature of the heat source device is controlled, the internal temperature of the heat source device is avoided from being too high, excessive heat is avoided from being radiated outward by the heat source device, and the outer surface of the stealth module covered outside the heat source device is avoided from heating up, and the outer surface temperature of the stealth module 20 is controlled and ensured to be adapted to the ambient temperature, thereby ensuring the infrared stealth function of the heat source device.

[0033] Based on the above technical solution, the control and drive module 5 and the heat exchange module 2 are positioned away from the heat source device 100. Specifically, they are positioned at a considerable distance from the louvered heat absorption module 1, preventing them from affecting the concealment of the heat source device 100 and indirectly exposing the location of the heat source device 100. Furthermore, the control and drive module 5 and the heat exchange module 2 have conventional device structures. While they generate heat during operation, the heat is relatively low, with a low temperature difference from the ambient temperature. Furthermore, as is common in most conventional mechanical equipment, they are not particularly revealing.

[0034] In the present technical solution, the thermal management system with infrared stealth and heat dissipation functions is independently controlled and does not start or stop at the same time as the heat source equipment. The louver heat absorption module 1 can work continuously and can continue to work for a considerable period of time when the heat source equipment 100 is running or after it is shut down. The circulating refrigerant temperature or the circulating refrigerant delivery volume is controlled according to the ambient temperature to achieve precise control of the surface temperature of the heat source equipment and realize that the external temperature of the heat source equipment changes with the ambient temperature. That is, the thermal management system with infrared stealth and heat dissipation functions has environmental followability.

[0035] In this technical solution, if Figure 1 The stealth module 20 includes a housing 23 that covers the heat source device 100, a heat insulation assembly 21 disposed on the inner surface of the housing 23, and a first heat exchange tube 22 disposed between the heat insulation assembly 21 and the inner surface of the housing 23. The first heat exchange tube 22 is connected to the cooling module 8. The refrigerant circulating in the first heat exchange tube 22 absorbs the heat radiated from the heat source device 100 to the housing 23.

[0036] Based on the above technical solution, a shell 23 is provided on the outside of the heat source device 100, and one side is convenient for the installation of the first heat exchange tube 22 and the heat insulation component 21, and at the same time, a layer can be formed between the heat insulation component 21 and the shell 23 to prevent the heat from passing through the heat insulation component 21 from quickly diffusing into the air, thereby prolonging the contact time between the hot air and the first heat exchange tube 22, and improving the heat exchange effect and heat exchange rate between the first heat exchange tube 22 and the shell 23. The refrigerant circulating in the first heat exchange tube 22 absorbs the heat radiated from the heat source device 100 to the shell 23, ensuring that the outer surface temperature of the shell 23 is adapted to the ambient temperature, achieving low infrared detectability of the shell 23, and realizing the stealth of the heat source located inside the shell. That is, the setting of the stealth module 20 of this technical solution achieves full coverage of the outside of the heat source device 100 through the stealth module 20, thereby realizing the stealth of the heat source device. In this technical solution, if Figure 1 The housing 23 is provided with a heat dissipation port 102 that communicates with the heat source device's heat dissipation port 103. The louvered heat absorption module 1 includes a louver assembly positioned at the heat source device's heat dissipation port 103 of the heat source device 100 and a second heat exchange tube 12 secured to the louver assembly. The second heat exchange tube 12 communicates with the cooling module 8. Refrigerant circulating within the second heat exchange tube 12 absorbs heat from the heat source device 100 that is transported outward from the louver assembly. While dissipating heat from the heat source device, this prevents heat from the heat source device from directly entering the air, potentially causing localized high temperatures near the heat source device and affecting its stealth. Specifically, through the configuration of the louvered heat absorption module 1 and the stealth module 20, the louvered heat absorption module 1 ensures heat dissipation from the heat source device. Simultaneously, by controlling the outer surface temperature of the stealth module 20 to match the ambient temperature, the heat source device is rendered invisible.

[0037] Based on the above technical solution, the design of the housing heat dissipation port 102 connected to the heat source device heat dissipation port 103, and the design of the shutter assembly at the location of the housing heat dissipation port 102, ensure the heat dissipation performance and capacity of the heat source device. The shutter assembly also provides a shielding function, effectively shielding the internal components of the heat source device. When observing from the outside of the heat source device, only the shutter plates of the shutter assembly are visible, thereby improving the stealth capability of the heat source device.

[0038] Based on the above technical solution, by setting a second heat exchange tube 12 on the louver assembly, when the hot air inside the heat source device flows to the heat dissipation port 102 of the outer shell, the circulating refrigerant circulating in the second heat exchange tube 12 immediately absorbs the heat in the hot air, that is, in the process of the hot air flowing outward through the louver assembly, the heat in the hot air is gradually absorbed, and the temperature of the hot air gradually decreases. When it flows out of the louver assembly, the temperature of the hot air has dropped to a state that is compatible with the ambient temperature. When it continues to be discharged outward, there will be no problem of local temperature rise causing the heat source device to be exposed. At the same time, the second heat exchange tube 12 on the louver assembly absorbs the heat in the heat source device, reduces the internal temperature of the heat source device, avoids damage to the internal components of the heat source device due to high temperature, and avoids the heat in the heat source device from radiating outward through the outer surface of the heat source device, thereby controlling the outer surface temperature of the heat source device to adapt to the ambient temperature, and avoiding the problem of the heat source device being exposed due to excessive temperature difference between the outer surface temperature of the heat source device and the ambient temperature.

[0039] Based on the above technical solution, the present technical solution achieves normal convection between the air inside the heat source device and the external environment by providing the shutter assembly and the second heat exchange tube 12 on the shutter assembly, ensuring heat dissipation within the heat source device. Furthermore, through continuous and normal convection of hot air at various locations within the heat source device, uniform heat dissipation is achieved at various locations within the heat source device, achieving good heat dissipation. In the present technical solution, the provision of the shutter assembly and the second heat exchange tube 12 on the shutter assembly enables internal convection at various locations within the heat source device, and external convection between the interior of the heat source device and the exterior, resulting in high heat dissipation efficiency and good heat dissipation.

[0040] Based on the above technical solution, the heat source device 100 generates heat during operation and remains in a high-temperature state for a period of time after it stops working. At this time, the heat source device radiates heat outward, and the heat radiates into the housing 23 of the stealth module 20 and the first heat exchange tube 22. The refrigerant circulating in the first heat exchange tube absorbs the radiated heat, ensuring that the outer surface temperature of the housing 3 is adapted to the ambient temperature, thereby ensuring the stealth of the heat source device. At the same time, by providing a housing heat dissipation port 102 connected to the heat source device heat dissipation port 103 and providing a louvered heat absorption module 1 at the location of the housing heat dissipation port 102, the louvered heat absorption module 1 absorbs the heat dissipated by the heat source device through the heat source device heat dissipation port 103 to the location of the housing heat dissipation port 102, ensuring normal heat dissipation of the heat source device and ensuring the stealth of the heat source device. The configuration of this technical solution enables the thermal management system to adapt to specific environments.

[0041] In this technical solution, the shutter assembly includes a number of louvers arranged in an inclined shape, which extend inward from the outer surface of the shell. The second heat exchange tube 12 can be detachably fixed on each louver 11, and the second heat exchange tube 12 is evenly distributed on the surface of the louver 11 in a coiled shape, and each second heat exchange tube 12 is connected in series or in parallel.

[0042] Based on the above technical solution, the louver plate 11 structure is simple, low-cost, and provides excellent heat dissipation and airflow. The louver plate 11 also helps guide the airflow, increasing the contact time between the airflow and the second heat exchange tube 12, improving the heat exchange effect, and ensuring that all heat in the hot air output from the heat source device is absorbed.

[0043] Based on the above technical solution, it is best if each second heat exchange tube 12 is connected in parallel, which is convenient for replacement or maintenance. At the same time, it is more conducive to the precise control of the temperature of each louver 11 position, avoiding the problem that the circulating refrigerant process is too long when connected in series, resulting in the temperature of the rear outer plate being difficult to meet the requirements, and can effectively ensure that the outer surface temperature of each heat source equipment is controlled within 4°C of the ambient temperature.

[0044] In this technical solution, second heat exchange tube shielding strips 13 are also provided on the side of the louver 11 where the second heat exchange tube 12 is located. Second heat exchange tube shielding strips 13 are located at the outer ends of the louver 11. The provision of second heat exchange tube shielding strips 13 blocks the second heat exchange tube 12 between the two louvers, preventing it from being observed from outside the heat source equipment and preventing it from being exposed due to the heat absorption and temperature rise of the refrigerant circulating within it.

[0045] In this technical solution, the second heat exchange tube shielding strip 13 is integrally formed with the louver 11 to ensure its strength. The louver 11 is made of one of copper, aluminum and alloy, and the second heat exchange tube and the first heat exchange tube are both made of one of copper, aluminum and alloy. The louver and the shell are both made of one of copper, aluminum and alloy, and can quickly exchange heat with the second heat exchange tube. When the temperature of the louver 11 rises, the refrigerant can exchange heat with the louver in time, control the temperature of the louver 11 to adapt to the ambient temperature, and absorb the heat in the hot air convected at the louver position. The second heat exchange tube 12 and the first heat exchange tube 22 are both made of copper tubes or aluminum tubes. Copper tubes or aluminum tubes have good thermal conductivity, ensuring the heat exchange effect of the second heat exchange tube.

[0046] In this technical solution, if Figure 7 As shown, the second heat exchange tube 12 and the first heat exchange tube 22 are fixed to the inner surface of the louver plate 11 and the shell 23 by tube clamps 15 and rivets 14 respectively, which is convenient and fast to install and easy to replace and repair.

[0047] In this technical solution, the circulating refrigerant is ethylene glycol coolant or methylene glycol coolant, which is low in cost, non-toxic, easy to control, and has a good heat absorption effect. The heat exchange module 2 includes a sealed heat exchanger 3 and a fan 4 for dissipating heat from the heat exchanger 3. The ethylene glycol coolant or methylene glycol coolant is filled in the heat exchanger 3; the cooling module 8 includes a plurality of heat-insulating pipes, which connect the heat exchanger 3, the second heat exchange tube 12, and the first heat exchange tube 22. The first heat exchange tube and the second heat exchange tube are connected in parallel or in series. The use of heat-insulating pipes to transport the circulating refrigerant can, on the one hand, avoid exposure of the heat source device 100 when the heat-insulating pipes transport the circulating refrigerant, and on the other hand, avoid cooling loss during the transportation of the circulating refrigerant.

[0048] In this technical solution, the control and drive module includes a circulation pump 7, a flow control valve 6, and a control unit. The inlet and outlet of the circulation pump 7 are connected to insulated conduits, and the flow control valve 6 is located on the outlet side of the circulation pump 7. The control unit includes a controller, an ambient temperature sensor, several louver temperature sensors installed on the louvers 11, and a housing temperature sensor fixed to the outer surface of the housing. The louver temperature sensor is located in the middle of the louvers and measures the outer surface temperature of the housing. The controller controls the flow rate of the flow control valve 6.

[0049] Based on the above technical solution, the ambient temperature sensor, the housing temperature sensor, and the louver temperature sensor are used to detect the ambient temperature, the housing outer surface temperature, and the temperature at the center of the louver, respectively, and each sends a temperature signal to the controller. Based on the temperature signals sent by the ambient temperature sensor, the housing outer surface temperature sensor, and the louver temperature sensor, the controller obtains the temperature difference between the center of the louver (the temperature of the hot air convecting outward after the heat has been absorbed by the refrigerant) and the ambient temperature, as well as the stable difference between the housing outer surface temperature and the ambient temperature, and controls the flow rate of the flow control valve 6 in real time. In other words, the amount of refrigerant circulating in the second heat exchange tube 12 or the first heat exchange tube is controlled. Generally, the more refrigerant circulating in the second heat exchange tube or the first heat exchange tube, the better the heat absorption capacity.

[0050] Generally, it is necessary to ensure that the temperature difference between the outer end of the louver and the outer surface of the shell and the ambient temperature is within 4°C. The louver temperature sensor is set in the middle position of the louver. The temperature measured here is the temperature of the heat in the hot air convected from the heat source equipment to the outside after passing through the refrigerant absorption part. At this time, when the hot air temperature is higher than the ambient temperature and close to 4°C, the controller controls the flow control valve 6 to increase the flow rate, increase the amount of refrigerant circulating in the second heat exchange tube 12, and increase the heat exchange capacity of the second heat exchange tube 12, so that the refrigerant circulating in the second heat exchange tube quickly absorbs the hot air and cools it down, so that the heat in the hot air is quickly absorbed, so that the air convected to the outside adapts to the ambient temperature. When the temperature obtained by the louver temperature sensor is lower than the ambient temperature and close to 4°C, the controller controls the flow control valve 6 to decrease the flow rate, reduce the amount of refrigerant circulating in the second heat exchange tube 12, temporarily reduce the heat absorption of the refrigerant in the second heat exchange tube, and avoid the temperature difference from continuing to increase. The outer shell temperature control method is consistent with the aforementioned louver temperature control method. In the latter, when the first heat exchange tube and the second heat exchange tube are connected in series or in parallel, the circulating refrigerant in the first heat exchange tube and the second heat exchange tube is synchronously controlled.

[0051] In this technical solution, the heat insulation component 21 is a heat insulation board made of a heat insulation material, which is one of aerogel insulation material, rubber-plastic insulation material, and foamed polyurethane; heat insulation boards of appropriate size are fixed on each inner surface of the shell. The exterior of the heat source device 100 is covered with a heat insulation board. The setting of the heat insulation board 101 can isolate the temperature of the heat source device 100, prevent the heat in the heat source device from quickly radiating outward through the heat insulation board, and add the heat insulation board so that the heat in the heat source device is mainly convected outward from the louver position, ensuring that the louver position absorbs heat, which is conducive to controlling the surface temperature of the heat source device, ensuring that the outer surface temperature of the heat source device is adapted to the ambient temperature, and ensuring the infrared stealth function of the heat source device.

[0052] In this technical solution, if Figure 4The louver 11 is arranged in an inclined downward shape, with the inner end 19 lower than the outer end 18, and the second heat exchange tube 12 is arranged on the upper surface of the louver 11. In this technical solution, the second heat exchange tube is easy to fix. The second heat exchange tube is placed on the upper surface of the louver 11 and is not prone to falling off.

[0053] In this technical solution, if Figure 5 The louver 11b is tilted downward, with the inner end 19b lower than the outer end 18b. The second heat exchange tube 12b is located on the lower surface of the louver 11b. In this technical solution, the second heat exchange tube 12b gradually rises near the outer end 18b. Based on the upward movement of hot air, the hot air more actively contacts the second heat exchange tube 12b, ensuring that the refrigerant in the second heat exchange tube 12b absorbs heat.

[0054] In this technical solution, if Figure 6 The louver 11c is tilted upward, with the inner end 19c higher than the outer end 18c. The second heat exchange tube 12c is arranged on the lower surface of the louver 11c. In this technical solution, the second heat exchange tube 12c is gradually lowered near the outer end 18c. According to the upward state of the hot air, the hot air is more actively in contact with the second heat exchange tube 12c, ensuring that the refrigerant in the second heat exchange tube 12c absorbs the heat. It has been verified that this Figure 6 The arrangement of the middle louver plate 11c and the second heat exchange tube 12c optimizes the refrigerant heat absorption effect.

[0055] The technical solution of the present invention is described above in conjunction with the embodiments and drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A thermal management system with infrared stealth and heat dissipation functions, characterized in that: The heat dissipation device comprises a control and drive module, a heat exchange module, a cooling module, a stealth module arranged outside the heat source device, and a louver heat absorption module arranged on the stealth module, wherein the louver heat absorption module is arranged toward the heat dissipation outlet of the heat source device; the control and drive module and the heat exchange module are arranged away from the heat source device, and the cooling module is filled with a circulating refrigerant, which is driven by the control and drive module, passes through the heat exchange module and the cooling module, and enters the stealth module and the louver heat absorption module, controls the outer surface temperature of the stealth module to adapt to the ambient temperature, and absorbs the heat radiated from the heat dissipation outlet of the heat source device; The stealth module includes a shell covering the outside of the heat source device, a heat insulation component placed on the inner surface of the shell, and a first heat exchange tube arranged between the heat insulation component and the inner surface of the shell. The first heat exchange tube is connected to the cooling module. The refrigerant circulating in the first heat exchange tube absorbs the heat radiated from the heat source device to the shell. The shell is provided with a shell heat dissipation port connected to the heat dissipation port of the heat source equipment. The louver heat absorption module includes a louver assembly arranged at the position of the shell heat dissipation port and a second heat exchange tube fixed on the louver assembly. The second heat exchange tube is connected to the cooling module; the refrigerant circulating in the second heat exchange tube absorbs the heat radiated outward from the heat source equipment from the position of the louver assembly.

2. The thermal management system with infrared stealth and heat dissipation functions according to claim 1, characterized in that: The shutter assembly includes a plurality of louvers arranged in an inclined shape, and the louvers extend inward from the outer surface of the shell. The second heat exchange tube can be detachably fixed on each louver, and the second heat exchange tube is evenly distributed on the surface of the louver in a coiled shape. The second heat exchange tubes are connected in series or in parallel.

3. The thermal management system with infrared stealth and heat dissipation functions according to claim 2, characterized in that: The louver plate is arranged in an inclined downward shape, with the inner end lower than the outer end, and the second heat exchange tube is arranged on the upper surface of the louver plate.

4. The thermal management system with infrared stealth and heat dissipation functions according to claim 2, characterized in that: The louver plate is arranged in an inclined downward shape, with the inner end lower than the outer end, and the second heat exchange tube is arranged on the lower surface of the louver plate.

5. The thermal management system with infrared stealth and heat dissipation functions according to claim 2, characterized in that: The louver plate is arranged in an upwardly inclined shape, with the inner end higher than the outer end, and the second heat exchange tube is arranged on the lower surface of the louver plate.

6. The thermal management system with infrared stealth and heat dissipation functions according to claim 3, 4 or 5, characterized in that: A second heat exchange tube shielding strip is also provided on the side of the louver plate where the second heat exchange tube is provided. The second heat exchange tube shielding strip is provided at the outer end of the louver plate.

7. The thermal management system with infrared stealth and heat dissipation functions according to claim 6, characterized in that: The second heat exchange tube shielding strip is integrally formed with the louver plate, the louver plate is made of one of copper, aluminum and an alloy, and the second heat exchange tube and the first heat exchange tube are both made of one of copper, aluminum and an alloy.

8. The thermal management system with infrared stealth and heat dissipation functions according to claim 1, characterized in that: The circulating refrigerant is ethylene glycol coolant or methylene glycol coolant, the heat exchange module includes a sealed heat exchanger and a fan for dissipating heat from the heat exchanger, and the ethylene glycol coolant or methylene glycol coolant is filled in the heat exchanger; the cooling module includes a plurality of heat-insulating pipes, which connect the heat exchanger, the second heat exchange tube and the first heat exchange tube, and the first heat exchange tube and the second heat exchange tube are connected in parallel or in series.

9. The thermal management system with infrared stealth and heat dissipation functions according to claim 1, characterized in that: The control and drive module includes a circulation pump, a flow control valve and a control unit. The inlet and outlet of the circulation pump are respectively connected to the insulated conduit. The flow control valve is arranged on the outlet side of the circulation pump. The control unit includes a controller, an ambient temperature sensor and several louver temperature sensors respectively arranged on the louver and a shell temperature sensor fixed on the outer surface of the shell. The louver temperature sensor is arranged in the middle of the louver. The controller controls the flow of the flow control valve.

10. The thermal management system with infrared stealth and heat dissipation functions according to claim 1, characterized in that: The thermal insulation component is a thermal insulation board, which is made of thermal insulation material. The thermal insulation material is one of aerogel thermal insulation material, rubber and plastic thermal insulation material, and foamed polyurethane; thermal insulation boards of appropriate size are fixed on each inner surface of the shell.

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