Air internal circulation closed radar heat dissipation case

Abstract

The utility model discloses a closed type radar heat dissipation case with air internal circulation. The closed type radar heat dissipation case comprises a closed type case body, an air internal circulation system arranged in the closed type case body and an external air cooling heat dissipation device arranged outside the closed type case body. The air internal circulation system is composed of an internal hollow air channel, a first internal radiator, a second internal radiator and an internal fan. The first internal radiator and the second internal radiator are vertically attached to the two sides of the sealed case body respectively, the hollow air duct is transversely arranged between the two parallel internal radiators, a vertical through hole is formed in the middle of the hollow air duct, and the internal radiators are fixedly arranged in a manner of communicating with the hollow air duct; and the internal fan is fixedly arranged in the hollow air duct. The LED lamp is simple in structure, low in cost, small in size, light in weight and capable of greatly improving the heat dissipation effect on the premise that the design difficulty and the use cost are not greatly increased.

Description

Technical Field

[0001] This utility model relates to the field of chassis heat dissipation technology, and in particular to a closed radar heat dissipation chassis with internal air circulation. Background Technology

[0002] Currently, radar is an electronic device that uses electromagnetic waves to detect targets. During operation, radar components inevitably generate heat. For high-power-density radars, specialized heat dissipation methods are essential. Typically, the casing temperature of heat-generating components inside the radar housing needs to be controlled below 90°C. Small radars used on land typically employ forced air cooling, and the following are some common methods.

[0003] 1. The radar chassis is designed with an open structure, allowing the internal air to communicate with the external environment. Cooling fans are installed on the heat-generating components to dissipate heat throughout the chassis and then into the external environment, achieving individual heat dissipation for each component.

[0004] This method suffers from poor sealing of the radar enclosure and components, making the internal components and electronic parts susceptible to mold, moisture, salt spray, and dust. Furthermore, it only provides heat dissipation for individual components, not for the entire radar system.

[0005] 2. The radar chassis is designed with an open structure, allowing the internal air to communicate with the external environment. Fans are installed on the chassis walls to blow cool air from the external environment into the chassis, achieving overall heat dissipation within the chassis.

[0006] This method can achieve overall radar heat dissipation and improve the heat dissipation effect, but it also has the disadvantage of poor sealing. Furthermore, due to the presence of the fan, it is easier for rainwater, sand, dust and other debris to be sucked in, which can damage the internal components of the radar chassis. The solution is to set up a labyrinth structure at the air inlet and outlet, but this will significantly reduce the heat dissipation effect.

[0007] 3. Design the radar chassis as a sealed structure, and use heat pipes, heat spreaders or other high-efficiency heat conduction devices to conduct heat from inside the radar chassis to the outside of the chassis. Arrange a forced air cooling device on the outside of the chassis to quickly diffuse the conducted heat to the external environment.

[0008] This method balances heat dissipation and sealing, but it is complex in structure and cumbersome in design, and it will significantly increase the weight of the radar and the cost of use. Utility Model Content

[0009] The purpose of this invention is to provide a sealed radar cooling enclosure with internal air circulation, which can meet both the sealing requirements and heat dissipation needs of the radar enclosure, while also being low in cost and simple in structure.

[0010] The technical solution adopted in this utility model is as follows:

[0011] A sealed radar heat dissipation enclosure with internal air circulation includes a sealed enclosure body, an internal air circulation system disposed within the sealed enclosure body, and an external air-cooling heat dissipation device disposed outside the sealed enclosure body.

[0012] The internal air circulation system consists of an internal hollow air duct, a first internal heat sink, a second internal heat sink, and an internal fan. The first and second internal heat sinks are vertically attached to both sides of the sealed chassis body. The hollow air duct is horizontally arranged between the two parallel internal heat sinks. A vertical through hole is provided in the middle of the hollow air duct, and the internal heat sinks are connected and fixedly installed in the hollow air duct. The internal fan is fixedly installed in the hollow air duct.

[0013] The external air-cooled heat dissipation device consists of a first external heat sink and a second external heat sink; the first external heat sink and the second external heat sink are respectively attached to the first internal heat sink and the second internal heat sink on the two side walls of the sealed chassis body, and are used to absorb the heat on the chassis.

[0014] The internal fan comprises multiple fans, which are respectively installed in the hollow air duct and evenly distributed on both sides of the through hole.

[0015] It also includes an external fan, which is used to continuously blow ambient air into the external radiator to cool it down.

[0016] The external radiator and / or internal radiator are organ pipe type radiators.

[0017] The aforementioned organ tube radiator is also equipped with fins.

[0018] The sealed chassis body includes an antenna radome, a housing, and a rear cover. The housing plays a major role in support, installation, positioning, and protection. It is an integrated front-to-back through-type structure with sealed side walls. The antenna radome is made of non-metallic wave-transparent material, which serves to seal and protect the antenna while allowing it to transmit and receive electromagnetic waves.

[0019] The first internal heat sink, the second internal heat sink, the first external heat sink, and the second external heat sink are respectively integrated and fitted together, serving as the side wall of the sealed chassis, further increasing the heat dissipation of the device.

[0020] This invention utilizes a sealed chassis to create a completely enclosed structure for the internal components, protecting them from mold, moisture, salt spray, and dust. Simultaneously, forced air cooling significantly improves the chassis's heat dissipation. An internal air circulation system keeps the air inside the radar chassis circulating, with the flowing air evenly passing over the exposed surfaces of each heat-generating component. This increases the rate of heat diffusion, ensuring uniform heat dissipation and preventing heat accumulation. It also increases the heat exchange area and speed between the internal air and the external environment, significantly improving the overall heat dissipation of the radar. Both the internal and external heat sinks are bellows-type radiators, with the fins inside fully contacting the air for efficient heat exchange. The internal and external heat sinks are mounted in groups on the chassis wall, transferring heat through solid-state heat conduction, resulting in high heat transfer efficiency. The components used are simple in structure, low in cost, and compact in size and weight, significantly improving heat dissipation without substantially increasing design complexity or operating costs. The sealed chassis, internal devices, internal air circulation system, and external air-cooling device can all function as independent systems and can be combined in any way to meet different needs, demonstrating a high level of versatility, standardization, and modularity. The heat sinks and fans used in the internal air circulation system and external air-cooling device are of a uniform type, ensuring high interchangeability and convenient maintenance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the external structure of the front side of the sealed air-cooled chassis of the present invention;

[0023] Figure 2 This is a schematic diagram of the external structure of the rear side of the sealed air-cooled chassis of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0025] Figure 4 This is a plan view of the internal structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal air circulation of the chassis of the present invention;

[0027] Figure 6This is a schematic diagram of the external and internal heat sink structures described in this invention;

[0028] Figure 7 This is a cross-sectional view of the chassis and heat sink of the present invention;

[0029] Figure 8 for Figure 7 A magnified view of a portion of point A in the middle;

[0030] Figure 9 This is a comparison chart showing the heat dissipation effect between natural air cooling and the embodiment of the present invention. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figure 1 , 2 As shown in Figure 3, this utility model includes a sealed chassis body, an internal air circulation system disposed within the sealed chassis body, and an external air-cooling heat dissipation device disposed outside the sealed chassis body. The sealed chassis includes an radome 101, a housing 102, and a rear cover 103. The housing 102 plays a major supporting, mounting, positioning, and protective role, and is an integral front-to-back through-type structure with sealed side walls. The radome 101 is made of non-metallic wave-transparent material, serving a sealing and protective function, while allowing the antenna 8 to transmit and receive electromagnetic waves to pass through. The rear cover 103 serves a sealing and protective function. The radome 101 is installed in front of the housing 102, and the rear cover 103 is installed behind the housing 102. Together, the three form a sealed enclosure, isolating the interior of the enclosure from the exterior and protecting the internal components from mold, moisture, salt spray corrosion, and dust damage.

[0033] In actual use, the sealed chassis also houses internal components, including antenna 8, component 4 (first component), component 5 (second component), component 6 (third component), and component 7 (fourth component). Antenna 8 serves to transmit and receive electromagnetic waves and also acts as the mounting base for components 4 (first component), 5 (second component), 6 (third component), and 7 (fourth component). The location of antenna 8 is shown in [reference needed]. Figure 3 , Figure 7 Components 1-4, Component 2-5, Component 3-6, and Component 4-7 are the main functional components of the radar and also the main heat-generating components. Under normal circumstances, the housing temperature of these components should be controlled below 90℃ during operation.

[0034] The internal air circulation system comprises an internal hollow air duct 301, a first internal heat sink 302, a second internal heat sink 303, and an internal fan. The first and second internal heat sinks are vertically fitted to both sides of the sealed chassis body. The hollow air duct is horizontally positioned between the two parallel internal heat sinks, with a vertical through hole in the middle. The internal heat sinks are connected and fixedly mounted to the hollow air duct. The internal fan is fixedly mounted within the hollow air duct. In actual use, multiple internal fans are used, each positioned within the hollow air duct and evenly distributed on both sides of the through hole. In this embodiment, the internal fans include a first internal fan 304 and a second internal fan 305. The internal hollow air duct 301 is a through-channel with an opening in the middle for air to enter, and its two ends are connected to the first internal heat sink 302 and the second internal heat sink 303. The first internal heat sink 302 and the second internal heat sink 303 have openings in the middle connected to the internal hollow air duct 301, and their two ends are open channels for air to flow out. The internal hollow air duct 301, the first internal radiator 302, and the second internal radiator 303 together form an "I"-shaped air duct structure. The first internal fan 304 and the second internal fan 305 are installed in the internal hollow air duct 301, which plays the role of exhaust and air supply, and provides power for the internal air circulation.

[0035] It also includes an external fan, which continuously blows ambient air into the external heat sink to cool it down. Specifically, the external air-cooling device consists of a first external heat sink 201 and a second external heat sink 202. The first external heat sink 201 and the second external heat sink 202 are respectively attached to the first internal heat sink 302 and the second internal heat sink 303 on the two side walls of the sealed chassis body to absorb heat from the chassis 102. In actual use, a thermally conductive silicone layer is also provided at the contact points of the three components to further increase the efficiency of heat exchange. The first external fan 203 and the second external fan 204 continuously blow cool air into the first external heat sink 201 and the second external heat sink 202, dissipating the heat emanating from inside the sealed chassis into the environment, thus achieving a cooling and temperature control effect.

[0036] In actual use, the external and / or internal radiators described in this application are bellows-type radiators. The bellows-type radiators are further provided with fins. In this embodiment, the first external radiator 201, the second external radiator 202, the first internal radiator 302, and the second internal radiator 303 are bellows-type radiators. The structures of the first external radiator 201 and the second internal radiator 303 are described below. Figure 6 Both are attached to the same side wall of the casing 102, and heat can be transferred through thermal conduction. See the structural form for details. Figure 7 , Figure 8The second external heat sink 202 has the same structure as the first external heat sink 201, and the first internal heat sink 302 has the same structure as the second internal heat sink 303. The second external heat sink 202 and the first internal heat sink 302 are attached to the other side wall of the casing 102.

[0037] The internal radiator is an organ-tube type, with an opening in the middle connecting to the internal hollow air duct, allowing air to enter the duct, and openings at both ends for air outflow. The organ-tube type radiator serves multiple functions simultaneously: airflow, heat exchange, and installation. The fins of the internal radiator are in full contact with the air inside the chassis, absorbing heat from the internal air. The sidewalls of the internal radiator are fitted flush with the sidewalls of the chassis, transferring the heat absorbed by the fins to the chassis. The internal hollow air duct and the internal radiator together form an "I"-shaped airflow system. The internal fan is a small-power fan installed in the internal hollow air duct, providing power for the internal air circulation.

[0038] Inside the sealed chassis, air is evenly blown over the heating elements, absorbing their heat. The air then enters the internal hollow air duct through the central opening, is pressurized by an internal fan, and enters the internal heat sink. After releasing heat and cooling in the heat sink, the air re-enters the chassis through openings at both ends of the heat sink to continue absorbing heat from the heating elements, entering the next cycle. The internal and external heat sinks are mounted in pairs on the side walls of the chassis, allowing heat transfer via thermal conduction. The heat absorbed by the internal heat sink is transferred through the chassis to the external heat sink, and finally, ambient air is blown into the external heat sink by the external fan to remove the heat. The radome is made of non-metallic, wave-transparent material, allowing the antenna to transmit and receive electromagnetic waves. The chassis is a one-piece machined structure, open at the front and back with sealed walls, providing mounting positions for the radome, rear cover, and antenna.

[0039] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These descriptions are not exhaustive of all embodiments of the present invention, but are merely illustrative of one specific embodiment.

[0040] During operation, see the diagram illustrating the air circulation inside the sealed chassis. Figure 5Air enters through the opening in the middle of the internal hollow air duct 301, is pressurized by the first internal fan 304 and the second internal fan 305, and then enters the first internal heat sink 302 and the second internal heat sink 303. It then exits from both ends of the first internal heat sink 302 and the second internal heat sink 303, passing through device 4, device 5, device 6, and device 7 before re-entering the internal hollow air duct 301, forming a complete air circulation. During this process, the air absorbs heat and rises in temperature as it flows through device 4, device 5, device 6, and device 7, and carries the heat away. As it passes through the first internal heat sink 302 and the second internal heat sink 303, it releases heat and cools down, transferring the heat to the heat sinks. This cycle continues continuously, cooling the heat-generating devices.

[0041] The air inside the sealed chassis exchanges heat with the external environment through the first internal heat sink 302 and the second external heat sink 202, and the second internal heat sink 303 and the first external heat sink 201. The heat inside the sealed chassis is conducted to the external environment through the air inside the sealed chassis, the first internal heat sink 302 and the second internal heat sink 303, the chassis 102, the first external heat sink 201 and the second external heat sink 202, and the air outside the sealed chassis, thereby achieving cooling of the air inside the sealed chassis.

[0042] To quantify the heat dissipation effect of the embodiments of the present invention, simulations were performed on the heat dissipation effect of a naturally air-cooled chassis and the heat dissipation effect of the embodiments of the present invention.

[0043] In this embodiment of the invention, the power of the first external fan 203 and the second external fan 204 is 10.08W, the power of the first internal fan 304 and the second internal fan 305 is 0.96W, and the total power of the fans is 22.08W.

[0044] Component 1 (4) has a heating power of 100W, Component 2 (5) has a heating power of 50W, Component 3 (6) has a heating power of 30W, and Component 4 (7) has a heating power of 20W. The total heating power is 200W.

[0045] Steady-state simulations were performed at ambient temperatures of 25℃, 35℃, 45℃, 55℃, and 65℃.

[0046] The highest temperatures of the heat-generating components in the naturally air-cooled chassis were 83℃, 94℃, 105℃, 116℃, and 127℃, respectively, with maximum temperature rises of 58℃, 59℃, 60℃, 61℃, and 62℃.

[0047] In the embodiments of the present invention, the highest temperatures of the heating devices are 52°C, 62°C, 73°C, 83°C, and 95°C, and the maximum temperature rises are 27°C, 27°C, 28°C, 28°C, and 30°C, respectively.

[0048] For a comparison of the heat dissipation effects of natural air cooling and the embodiments of the present invention, please refer to [link / reference]. Figure 9 Compared to natural air cooling, the embodiments of the present invention can reduce the maximum temperature rise of the heat-generating device by more than 50%.

[0049] The air-circulating sealed radar cooling chassis of this invention has a compact structure, simple form, good maintainability, and high modularity. It can achieve the function of sealing and protecting the internal components of the radar chassis, and can significantly improve the heat dissipation effect without significantly increasing the cost, and can achieve uniform heat dissipation of the internal components of the radar chassis.

[0050] In the description of this invention, it should be noted that for directional terms, such as "center," "lateral," and "vertical," the appropriate terms may be used.

[0051] The directions and positional relationships indicated by symbols such as "direction", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

[0052] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0053] Note that the above description is merely a preferred embodiment and application of the technical principles of the present invention. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the specific embodiments described herein, and may include many other effective embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. An air internally circulating, closed radar heat sink cabinet, characterized by: The sealed case body, the air internal circulation system arranged in the sealed case body and the external air cooling heat dissipation device arranged outside the sealed case body are comprised. The air internal circulation system is composed of an internal hollow air duct, a first internal heat sink, a second internal heat sink and an internal fan. The first internal heat sink and the second internal heat sink are respectively vertically adhered to the two sides of the sealed case body.

2. The air-in-cycling closed radar heat-dissipation cabinet according to claim 1, characterized in that: The hollow air duct is horizontally arranged between the two parallel internal heat sinks.

3. The air-internal-circulation closed radar heat-dissipation cabinet according to claim 1, characterized in that: The internal fan is fixedly arranged in the hollow air duct.

4. An air internally circulating closed radar heat sink cabinet according to any one of claims 1-3, characterized in that: The external air cooling heat dissipation device is composed of a first external heat sink and a second external heat sink.

5. The air-internal-circulation closed radar heat-dissipation cabinet according to claim 4, characterized in that: The first external heat sink and the second external heat sink are respectively adhered to the two side walls outside the sealed case body corresponding to the first internal heat sink and the second internal heat sink.

6. The air-internal-circulation closed radar heat-dissipation cabinet according to claim 5, characterized in that: The internal fan includes a plurality of fans.

7. The air-internal-circulation closed radar heat-dissipation cabinet according to claim 6, characterized in that: The external fan is used to continuously blow ambient air into the external heat sink to cool the external heat sink. The external heat sink and / or the internal heat sink is an organ pipe type heat sink. The organ pipe type heat sink is further provided with fins. The sealed case body includes a radome, a case and a rear cover. The case plays a main supporting, mounting, positioning and protecting role. The case is an integrated front and rear through mechanism. The side wall is a closed structure. The radome is made of non-metal wave-transparent material. The radome plays a sealing and protecting role and can allow the antenna to transmit and receive electromagnetic waves. The first internal heat sink, the second internal heat sink, the first external heat sink and the second external heat sink are respectively integrally arranged corresponding to the side wall of the sealed case. The sealed case body is further increased in heat dissipation.

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