Liquid cooling and air cooling heat dissipation phased array radar

Abstract

The invention discloses a liquid cooling and air cooling heat dissipation phased array radar which comprises a main frame, and a heat dissipation structure, a TR assembly and an antenna array which are fixed in the main frame, and the TR assembly and the antenna array are distributed at two sides of the heat dissipation structure. The heat dissipation structure comprises a hollow flat plate shell, a plurality of partition plates and a plurality of core pipes, the partition plates are arranged in the hollow flat plate shell at intervals, the core pipes are arranged in the hollow flat plate shell in a penetrating mode, the core pipes and the partition plates are arranged in parallel at intervals, and airflow channels are formed between the core pipes and the adjacent partition plates; a plurality of air guide holes are formed in the plate face of the hollow flat plate shell along the airflow channel, a plurality of venturi sections are arranged in the airflow channel, and the venturi sections and the air guide holes are oppositely arranged, so that a negative pressure area corresponding to the venturi sections is formed in the airflow channel; the circulating pump, the refrigerating component and the core pipe are connected in series to form a liquid cooling loop, and the air filter and the air suction fan are connected to the two ends of the airflow channel respectively.

Description

Technical Field

[0001] The present invention relates to the technical field of radar antennas, and in particular to a phased array radar with liquid cooling and air cooling. Background Art

[0002] At present, phased array radars are widely used in security defense, civil aviation, meteorology, and 5G communications. The main form is a planar array, and each array element can control its current phase, and electronic scanning is achieved by controlling the phase difference between array elements. Because phased array radars consume a lot of power and generate a lot of heat during operation, if the heat is not dissipated in time, it is easy to cause the radar system to shut down due to high temperature.

[0003] For example, the Chinese invention patent application with application publication number CN112635952A and application publication date 2021.04.09 discloses a liquid-cooled phased array antenna and a cooling method thereof, which specifically includes: an antenna disk, a TR assembly, an RF coaxial connector and a liquid cooling system; the liquid cooling system includes a liquid cooling source, a liquid inlet pipeline, a liquid cooling plate and a liquid return pipeline connected in sequence; the liquid cooling source is used to provide the coolant required for cooling and heat exchange; the liquid inlet pipeline and the liquid return pipeline respectively realize the injection of coolant into the liquid cooling plate and the return of coolant. The antenna disk, the TR assembly, and the RF coaxial connector are all installed on the liquid cooling plate, and a plurality of array-distributed antenna radiating units are provided on the antenna disk, the antenna radiating unit is provided with a second RF channel, and the TR assembly is provided with a third RF channel. The two ends of the RF coaxial connector realize signal connection with the antenna radiating unit and the TR assembly through the second RF channel and the third RF channel.

[0004] The liquid-cooled phased array antenna in the prior art cools and dissipates heat through the coolant in the liquid cooling plate, but the heat dissipation area is mainly concentrated on the plate surface contacting the liquid cooling plate, and cannot produce a reliable cooling effect on the space far away from the liquid cooling plate. Therefore, only a local heat dissipation effect is produced on the contact part between the TR component, the antenna plate and the liquid cooling plate, and the full-space and high-efficiency heat dissipation purpose of the phased array radar cannot be achieved. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides a phased array radar with liquid cooling and air cooling, which solves the problem that the heat dissipation area of ​​the existing liquid-cooled phased array antenna is mainly concentrated on the plate surface contacting the liquid cooling plate, and cannot produce a reliable cooling effect on the space far away from the liquid cooling plate. It only produces a local heat dissipation effect on the contact parts between the TR component, the antenna disk and the liquid cooling plate, and cannot achieve full-space and high-efficiency heat dissipation of the phased array radar.

[0007] (II) Technical solution

[0008] The present invention provides the following technical solutions:

[0009] The phased array radar with liquid cooling and air cooling comprises a main frame, a heat dissipation structure, a TR component and an antenna array. An accommodation space is provided inside the main frame. The heat dissipation structure, the TR component and the antenna array are fixedly installed in the accommodation space, and the TR component and the antenna array are respectively arranged on both sides of the heat dissipation structure.

[0010] The heat dissipation structure comprises a hollow flat shell, a plurality of partitions and a plurality of core tubes, wherein the plurality of partitions are arranged in the hollow flat shell at intervals, the core tube is arranged through the hollow flat shell, the core tube is arranged parallel to the partitions at intervals, and an air flow channel is formed between the core tube and the adjacent partitions;

[0011] The plate surface of the hollow flat shell is provided with a plurality of air guide holes along the air flow channel, and a plurality of Venturi sections are arranged inside the air flow channel, and the Venturi sections are arranged opposite to the air guide holes to form a negative pressure zone in the air flow channel corresponding to the Venturi sections;

[0012] It also includes a circulation pump, a refrigeration component, an air filter and an intake fan. The circulation pump, the refrigeration component, the air filter and the intake fan are all installed on the outside of the main frame. The circulation pump, the refrigeration component and the core tube are connected in series to form a liquid cooling circuit. The air filter and the intake fan are respectively connected to the two ends of the air flow channel.

[0013] Preferably, the Venturi section is arranged on the inner side of the plate surface of the hollow flat shell, and the Venturi section is a bulge that smoothly protrudes toward the core tube, and the air guide holes are correspondingly arranged in the middle of the Venturi section in the length direction of the air flow channel.

[0014] Preferably, the air flow channel is further provided with an expanded diameter section between adjacent venturi sections, and the ratio of the length of the expanded diameter section to the length of the venturi section is any ratio between 1 and 5.

[0015] Preferably, the minimum distance between the Venturi section and the core tube is any size between 3 mm and 20 mm, and the maximum distance between the expanded diameter section and the core tube is any size between 10 mm and 50 mm.

[0016] Preferably, a heat conducting plate is fixedly connected between the core tube and the plate surface of the hollow flat shell, and the heat conducting plate is extended and arranged parallel to the length direction of the core tube to form two symmetrically distributed airflow channels on both sides of the core tube and the heat conducting plate.

[0017] Preferably, gas diversion boxes are also installed on the two end panels of the hollow flat shell, and the internal divisions of the gas diversion box form a plurality of cavity units, and the plurality of cavity units are respectively connected with the air flow channels in sequence. An air inlet is provided on the side of the gas diversion box away from the hollow flat shell, and the air inlet is used to communicate with the air filter or the intake fan.

[0018] Preferably, the core tube is a serpentine core tube, and a connecting bend section is provided on the outside of the hollow flat shell. A first joint is provided at one end of the core tube, and a second joint is provided at the other end of the core tube, and the first joint and the second joint are both located on the outside of the hollow flat shell.

[0019] Preferably, the heat dissipation structure further includes a liquid supply pipeline and a liquid return pipeline, the circulation pump and the refrigeration component are respectively connected in series to the liquid supply pipeline, and the liquid supply pipeline is respectively connected to the first joints of the plurality of core tubes;

[0020] The liquid return pipeline is connected to the second joints of the plurality of core tubes respectively, and the liquid supply pipeline, the plurality of core tubes and the liquid return pipeline are connected in sequence to form the liquid cooling circuit.

[0021] Preferably, the refrigeration component is a semiconductor refrigerator or a compression refrigerator, and the heat exchange liquid in the liquid cooling circuit is any one of thermal conductive silicone oil, high-purity water, and ethylene glycol solution.

[0022] Preferably, a stainless steel sintered mesh, a polypropylene fiber filter element and a PP cotton filter element are installed inside the air filter, and the stainless steel sintered mesh, the polypropylene fiber filter element and the PP cotton filter element are stacked in sequence from outside to inside.

[0023] (III) Beneficial effects

[0024] Compared with the prior art, the present invention provides a phased array radar with liquid cooling and air cooling, which has the following beneficial effects:

[0025] The liquid-cooled and air-cooled phased array radar adopts the design form of main frame, heat dissipation structure, TR component, antenna array, circulation pump, refrigeration component, air filter and air intake fan. The heat dissipation structure, TR component and antenna array are all fixed in the accommodation space of the main frame. The main frame serves as the installation basis of the heat dissipation structure, TR component and antenna array, providing stable and reliable support for the main structure. In addition, the TR component and antenna array are arranged on both sides of the heat dissipation structure, making full use of the heat dissipation space on both sides of the heat dissipation structure, ensuring that the heat generated by the TR component and the antenna array can be taken away at the same time, effectively avoiding the accumulation of heat inside the phased array radar.

[0026] Among them, the heat dissipation structure includes a hollow flat plate housing, a plurality of partition plates, and a plurality of core tubes. The plurality of partition plates are arranged at intervals in the hollow flat plate housing, and the core tubes are arranged through the hollow flat plate housing. The core tubes are arranged in parallel and at intervals with the partition plates, and an air flow channel is formed between the core tubes and the adjacent partition plates. Heat exchange liquid can flow inside the core tubes, and air can flow in the air flow channel between the core tubes and the partition plates, which is equivalent to combining two cooling media inside the heat dissipation structure. The liquid cooling area is not limited to the plate surface of the hollow flat plate housing, and the air in the air flow channel is also assisted in cooling through the tube wall of the core tube, achieving the purpose of air cooling by using low-temperature air.

[0027] Since a plurality of air guide holes are provided on the plate surface of the hollow flat plate housing along the air flow channel, and a plurality of Venturi sections are arranged inside the air flow channel, and the Venturi sections are arranged opposite to the air guide holes. According to Bernoulli's principle, when air flows through the Venturi section, the flow rate increases, and a significant air pressure difference is formed on both sides inside and outside the air guide hole, so that the heat in the heat dissipation space outside the hollow flat plate housing can be sucked away by the cold air. Compared with the way of direct blowing and cooling by cold air, a pressure difference field and a temperature difference field are formed between the heat dissipation space outside the hollow flat plate housing and the air flow channel, ensuring that the hot air can spontaneously enter the air flow channel for efficient air cooling. When the hot air enters the narrow space of the air flow channel, the core tube generates a rapid liquid cooling effect, and combined with the thermal expansion and contraction phenomenon, it further strengthens the intake amount of hot air and the heat dissipation effect, avoiding the local heat dissipation effect on the contact parts of the TR component, antenna array and liquid cooling plate, and achieving the purpose of full-space and high-efficiency heat dissipation of the phased array radar.

[0028] In addition, the phased array radar further includes a circulation pump, a refrigeration component, an air filter, and an air suction fan. The circulation pump, the refrigeration component and the core tube are connected in series to form a liquid cooling loop, and the air filter and the air suction fan are respectively connected to both ends of the air flow channel. The circulation pump and the refrigeration component are connected in series with the core tube. The heat exchange liquid after absorbing heat through the heat dissipation structure is cooled by the refrigeration component, and the circulation pump circulates and inputs the low-temperature heat exchange liquid into the core tube, ensuring the stability of the liquid cooling heat dissipation effect. The air filter and the air suction fan are respectively connected to both ends of the air flow channel. The air filter is used to dehumidify and dust-remove and purify the outside air to prevent the accumulation of condensed water in the air flow channel from affecting the smoothness of air flow. The air suction fan is used to discharge the air inhaled into the air flow channel, thus ensuring the air flow rate therein and the air pressure difference at the air guide hole. Description of the Drawings

[0029] Figure 1 It is an exploded view of the phased array radar with liquid cooling and air cooling heat dissipation in the specific embodiment of the phased array radar with liquid cooling and air cooling heat dissipation of the present invention;

[0030] Figure 2 It is a three-dimensional schematic diagram of the heat dissipation structure in the specific embodiment of the phased array radar with liquid cooling and air cooling heat dissipation of the present invention;

[0031] Figure 3 A partial cross-sectional view of the heat dissipation structure of a specific embodiment of a phased array radar with liquid cooling and air cooling according to the present invention;

[0032] Figure 4 This is a connection diagram of the heat dissipation structure, the circulation pump, and the refrigeration components in a specific embodiment of the liquid-cooled and air-cooled phased array radar of the present invention.

[0033] In the figure: 1-main frame, 10-accommodating space, 2-heat dissipation structure, 20-hollow flat shell, 200-air guide hole, 21-partition, 22-core tube, 220-connecting elbow section, 221-first joint, 222-second joint, 23-air flow channel, 231-Venturi section, 232-expanded diameter section, 24-heat conduction plate, 25-gas diverter box, 250-cavity unit, 251-air inlet, 26-liquid supply pipeline, 27-return liquid pipeline, 3-TR assembly, 4-antenna array, 5-circulation pump, 6-refrigeration component, 7-air filter, 8-intake fan. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The liquid-cooled and air-cooled phased array radar of the present invention is as follows: Figures 1 to 4 As shown, the phased array radar with liquid cooling and air cooling includes a main frame 1, a heat dissipation structure 2, a TR component 3 and an antenna array 4. An accommodating space 10 is provided inside the main frame 1. The heat dissipation structure 2, the TR component 3 and the antenna array 4 are all fixedly installed in the accommodating space 10, and the TR component 3 and the antenna array 4 are respectively arranged on both sides of the heat dissipation structure 2; the heat dissipation structure 2 includes a hollow flat shell 20, a plurality of partitions 21 and a plurality of core tubes 22, the plurality of partitions 21 are arranged in the hollow flat shell 20 at intervals, the core tube 22 is penetrated in the hollow flat shell 20, the core tube 22 and the partition 21 are arranged in parallel and at intervals, and an air flow channel 23 is formed between the core tube 22 and the adjacent partition 21.

[0036] A plurality of air guide holes 200 are provided on the plate surface of the hollow flat shell 20 along the air flow channel 23, and a plurality of Venturi sections 231 are provided inside the air flow channel 23, and the Venturi sections 231 are arranged relative to the air guide holes 200 to form a negative pressure area corresponding to the Venturi sections 231 in the air flow channel 23; the hollow flat shell 20 also includes a circulating pump 5, a refrigeration component 6, an air filter 7 and an air intake fan 8, which are all installed on the outside of the main frame 1, and the circulating pump 5, the refrigeration component 6 and the core tube 22 are connected in series to form a liquid cooling circuit, and the air filter 7 and the air intake fan 8 are respectively connected to the two ends of the air flow channel 23.

[0037] The liquid-cooled and air-cooled phased array radar adopts the design form of a main frame 1, a heat dissipation structure 2, a TR component 3, an antenna array 4, a circulating pump 5, a refrigeration component 6, an air filter 7, and an air intake fan 8. The heat dissipation structure 2, the TR component 3, and the antenna array 4 are all fixed in the accommodation space 10 of the main frame 1. The main frame 1 serves as the installation basis of the heat dissipation structure 2, the TR component 3, and the antenna array 4, providing a stable and reliable support for the main structure. In addition, the TR component 3 and the antenna array 4 are respectively arranged on both sides of the heat dissipation structure 2, making full use of the heat dissipation space on both sides of the heat dissipation structure 2, ensuring that the heat generated by the TR component 3 and the antenna array 4 can be taken away at the same time, effectively avoiding the accumulation of heat inside the phased array radar.

[0038] The heat dissipation structure 2 includes a hollow flat shell 20, a plurality of partitions 21 and a plurality of core tubes 22. The plurality of partitions 21 are arranged at intervals in the hollow flat shell 20. The core tube 22 is arranged in parallel with the partitions 21, and an airflow channel 23 is formed between the core tube 22 and the adjacent partitions 21. The heat exchange liquid can be circulated inside the core tube 22, and the airflow channel 23 between the core tube 22 and the partition 21 can be circulated by air, which is equivalent to combining two cooling media inside the heat dissipation structure 2. The liquid cooling area is not limited to the plate surface of the hollow flat shell 20, but also plays an auxiliary cooling role for the air in the airflow channel 23 through the tube wall of the core tube 22, so as to achieve the purpose of air cooling and heat dissipation using low-temperature air.

[0039] Since a plurality of air guide holes 200 are provided on the plate surface of the hollow flat shell 20 along the air flow channel 23, a plurality of venturi sections 231 are provided inside the air flow channel 23, and the venturi sections 231 are arranged opposite to the air guide holes 200. According to the Bernoulli principle, when the air flows through the venturi sections 231, the flow velocity increases, and a significant pressure difference is formed on the inner and outer sides of the air guide holes 200, so that the heat in the heat dissipation space outside the hollow flat shell 20 can be sucked away by the cold air. Compared with the direct cooling method of cold air, a pressure difference field and a temperature difference field are formed between the heat dissipation space outside the hollow flat shell 20 and the air flow channel 23, ensuring that the hot air can spontaneously enter the air flow channel 23 for efficient air cooling and heat dissipation. When the hot air enters the narrow space of the air flow channel 23, the core tube 22 produces a rapid liquid cooling effect. Combined with the thermal expansion and contraction phenomenon, the hot air intake and heat dissipation effect are further enhanced, avoiding local heat dissipation effects on the contact parts of the TR component 3, the antenna array 4 and the liquid cooling plate, thereby achieving the purpose of full-space and high-efficiency heat dissipation of the phased array radar.

[0040] In addition, the phased array radar further includes a circulation pump 5, a refrigeration component 6, an air filter 7 and an air intake fan 8. The circulation pump 5, the refrigeration component 6 and the core tube 22 are connected in series to form a liquid cooling circuit. The air filter 7 and the air intake fan 8 are respectively connected to the two ends of the air flow channel 23. The circulation pump 5 and the refrigeration component 6 are connected in series with the core tube 22. The heat exchange liquid after absorbing heat by the heat dissipation structure 2 is cooled by the refrigeration component 6. The circulation pump 5 circulates the low-temperature heat exchange liquid into the core tube 22, thereby ensuring the stability of the liquid cooling heat dissipation effect. The air filter 7 and the air intake fan 8 are respectively connected to the two ends of the air flow channel 23. The air filter 7 is used to dehumidify and dedust the outside air to prevent the accumulation of condensed water in the air flow channel 23 and affect the smoothness of the air flow. The air intake fan 8 is used to discharge the air sucked into the air flow channel 23, thereby ensuring the air flow rate therein and the air pressure difference at the air guide hole 200.

[0041] In this embodiment, the Venturi section 231 is arranged on the inner side of the plate surface of the hollow flat shell 20, and the Venturi section 231 is a smoothly protruding bulge in the direction close to the core tube 22, and the air guide hole 200 is arranged in the middle of the Venturi section 231 in the length direction of the air flow channel 23. The Venturi section 231 is designed as a smoothly protruding bulge, which reduces the flow resistance of the air in the air flow channel 23, and the air guide hole 200 is located in the middle of the Venturi section 231 in the length direction of the air flow channel 23, where the air flow rate is large and the pressure difference is more obvious, so that the hot air in the outer heat dissipation space can be effectively sucked in.

[0042] Specifically, the airflow channel 23 is further provided with an expanded diameter section 232 between adjacent venturi sections 231, and the ratio of the length of the expanded diameter section 232 to the length of the venturi section 231 is any ratio between 1 and 5. As a further preferred embodiment, the ratio of the length of the expanded diameter section 232 to the length of the venturi section 231 is 4, and the expanded diameter section 232 is a relatively closed space compared to the venturi section 231. Moreover, the minimum distance between the venturi section 231 and the core tube 22 is any size between 3 mm and 20 mm, and the maximum distance between the expanded diameter section 232 and the core tube 22 is any size between 10 mm and 50 mm. The expanded diameter section 232 has a large cross-sectional area and a long length, thereby ensuring the air flow rate inside the airflow channel 23.

[0043] In other embodiments, in order to meet different usage requirements, the ratio of the length of the expanded diameter section to the length of the venturi section can also be any other ratio between 1 and 5. Accordingly, the minimum distance between the venturi section and the core tube can also be 3 mm, 6 mm, 10 mm, 15 mm, 20 mm, or any other size between 3 mm and 20 mm, and the maximum distance between the expanded diameter section and the core tube can also be 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, or any other size between 10 mm and 50 mm.

[0044] Among them, a heat conducting plate 24 is fixedly connected between the core tube 22 and the plate surface of the hollow flat shell 20, and the heat conducting plate is extended and arranged parallel to the length direction of the core tube 22 to form two symmetrically distributed airflow channels 23 on both sides of the core tube 22 and the heat conducting plate 24. The heat conducting plate 24 plays a role of fixed support for the core tube 22. On the one hand, the heat conducting plate 24 is connected to the tube wall of the core tube 22 and the plate surface of the hollow flat shell 20, which improves the heat dissipation effect of the plate surface on both sides of the hollow flat shell 20. On the other hand, the heat conducting plate 24 divides the space between the core tube 22 and the hollow flat shell 20 to form two parallel distributed airflow channels 23, which increases the heat exchange contact area of ​​the internal air, thereby ensuring the actual air cooling effect.

[0045] Moreover, gas diversion boxes 25 are installed on both end panels of the hollow flat shell 20, and the internal partitions of the gas diversion box 25 form a plurality of cavity units 250, and the plurality of cavity units 250 are respectively connected with the air flow channel 23 in sequence, and an air inlet 251 is provided on the side of the gas diversion box 25 away from the hollow flat shell 20, and the air inlet 251 is used to communicate with the air filter 7 or the air intake fan 8. The plurality of cavity units 250 of the plurality of gas diversion boxes 25 evenly distribute the intake and exhaust volumes to each air flow channel 23, thereby ensuring the heat dissipation uniformity of the two-side plane space of the entire heat dissipation structure 2.

[0046] In this embodiment, the core tube 22 is a serpentine core tube, and the core tube 22 is located outside the hollow flat shell 20 and is provided with a connecting elbow section 220, one end of the core tube 22 is provided with a first joint 221, and the other end of the core tube 22 is provided with a second joint 222, and the first joint 221 and the second joint 222 are both located outside the hollow flat shell 20. Figure 4 As shown, the heat dissipation structure 2 also includes a liquid supply pipeline 26 and a liquid return pipeline 27. The circulation pump 5 and the refrigeration component 6 are respectively connected in series to the liquid supply pipeline 26, and the liquid supply pipeline 26 is respectively connected to the first joints 221 of the multiple core tubes 22; the liquid return pipeline 27 is respectively connected to the second joints 222 of the multiple core tubes 22, and the liquid supply pipeline 26, the multiple core tubes 22 and the liquid return pipeline 27 are connected to form a liquid cooling circuit.

[0047] In addition, the refrigeration component 6 is a semiconductor refrigerator or a compression refrigerator, and the heat exchange liquid in the liquid cooling circuit is any one of thermal conductive silicone oil, high-purity water, and ethylene glycol solution. Thermal conductive silicone oil, high-purity water, or ethylene glycol solution has high specific heat capacity, good fluidity, and is not easily affected by temperature. In this embodiment, a stainless steel sintered mesh, a polypropylene fiber filter element, and a PP cotton filter element are installed inside the air filter 7, and the stainless steel sintered mesh, the polypropylene fiber filter element, and the PP cotton filter element are stacked from the outside to the inside. The filtration accuracy of the stainless steel tube filter is 40μm to 200μm, and the stainless steel sintered mesh plays a role in structural support and coarse filtration; the polypropylene fiber filter element is made of high-efficiency electrostatic fiber of polypropylene, and its filtration accuracy is 1μm to 60μm, which is mainly used to absorb tiny dust, mist droplets, water vapor, etc. in the outside air; the filtration accuracy of the PP cotton filter element is 0.1μm to 2μm, which achieves the purpose of multi-stage fine filtration of air, while ensuring the air passing efficiency and air intake.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A phased array radar with liquid cooling and air cooling, characterized in that: It includes a main frame, a heat dissipation structure, a TR component and an antenna array. The main frame is provided with an accommodation space inside. The heat dissipation structure, the TR component and the antenna array are fixedly installed in the accommodation space, and the TR component and the antenna array are respectively arranged on both sides of the heat dissipation structure. The heat dissipation structure comprises a hollow flat shell, a plurality of partitions and a plurality of core tubes, wherein the plurality of partitions are arranged in the hollow flat shell at intervals, the core tube is arranged through the hollow flat shell, the core tube is arranged parallel to the partitions at intervals, and an air flow channel is formed between the core tube and the adjacent partitions; The plate surface of the hollow flat shell is provided with a plurality of air guide holes along the air flow channel, and a plurality of Venturi sections are arranged inside the air flow channel, and the Venturi sections are arranged opposite to the air guide holes to form a negative pressure zone in the air flow channel corresponding to the Venturi sections; It also includes a circulation pump, a refrigeration component, an air filter and an intake fan. The circulation pump, the refrigeration component, the air filter and the intake fan are all installed on the outside of the main frame. The circulation pump, the refrigeration component and the core tube are connected in series to form a liquid cooling circuit. The air filter and the intake fan are respectively connected to the two ends of the air flow channel.

2. The liquid-cooled and air-cooled phased array radar according to claim 1, characterized in that: The Venturi section is arranged on the inner side of the plate surface of the hollow flat shell, and the Venturi section is a bulge that smoothly protrudes toward the core tube, and the air guide holes are arranged correspondingly in the middle of the Venturi section in the length direction of the air flow channel.

3. The liquid-cooled and air-cooled phased array radar according to claim 2, characterized in that: The airflow channel is further provided with an expanded diameter section between adjacent venturi sections, and the ratio of the length of the expanded diameter section to the length of the venturi section is any ratio between 1 and 5.

4. The liquid-cooled and air-cooled phased array radar according to claim 2, characterized in that: The minimum distance between the Venturi section and the core tube is any size between 3 mm and 20 mm, and the maximum distance between the expanded diameter section and the core tube is any size between 10 mm and 50 mm.

5. The liquid-cooled and air-cooled phased array radar according to claim 1, characterized in that: A heat conducting plate is fixedly connected between the core tube and the plate surface of the hollow flat shell, and the heat conducting plate is extended and arranged parallel to the length direction of the core tube to form two symmetrically distributed air flow channels on both sides of the core tube and the heat conducting plate.

6. The liquid-cooled and air-cooled phased array radar according to claim 1, characterized in that: Gas diversion boxes are also installed on the two end plates of the hollow flat shell. The interior of the gas diversion box is divided into multiple cavity units, and the multiple cavity units are connected with the air flow channels in sequence respectively. An air inlet is opened on the side of the gas diversion box away from the hollow flat shell, and the air inlet is used to communicate with the air filter or the intake fan.

7. The liquid-cooled and air-cooled phased array radar according to claim 1, characterized in that: The core tube is a serpentine core tube, and a connecting elbow section is arranged on the outside of the hollow flat shell. A first joint is arranged at one end of the core tube, and a second joint is arranged at the other end of the core tube, and the first joint and the second joint are both arranged on the outside of the hollow flat shell.

8. The liquid-cooled and air-cooled phased array radar according to claim 1, characterized in that: The heat dissipation structure further includes a liquid supply pipeline and a liquid return pipeline, the circulation pump and the refrigeration component are respectively connected in series to the liquid supply pipeline, and the liquid supply pipeline is respectively connected to the first joints of the plurality of core tubes; The liquid return pipeline is connected to the second joints of the plurality of core tubes respectively, and the liquid supply pipeline, the plurality of core tubes and the liquid return pipeline are connected in sequence to form the liquid cooling circuit.

9. The liquid-cooled and air-cooled phased array radar according to claim 1, characterized in that: The refrigeration component is a semiconductor refrigerator or a compression refrigerator, and the heat exchange liquid in the liquid cooling circuit is any one of thermal conductive silicone oil, high-purity water, and ethylene glycol solution.

10. The liquid-cooled and air-cooled phased array radar according to claim 1, characterized in that: A stainless steel sintered mesh, a polypropylene fiber filter element and a PP cotton filter element are installed inside the air filter. The stainless steel sintered mesh, the polypropylene fiber filter element and the PP cotton filter element are stacked in sequence from outside to inside.

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