An airborne antenna heat dissipation device and an airborne antenna

Abstract

The application belongs to the field of radar antenna, and particularly relates to an airborne antenna heat dissipation device and an airborne antenna. The airborne antenna heat dissipation device comprises a base, an airflow channel arranged in the base, a first air inlet and a first air outlet on the base, a radiator installed on the base, a fan module installed in the base and horizontally arranged between the first air inlet and the first air outlet, the fan module having a second air inlet and a second air outlet, a first movable plate movably arranged at the second air inlet, a second movable plate movably arranged at the second air outlet, and a third movable plate movably arranged at a first airflow gap. The airborne antenna heat dissipation device can automatically switch the heat dissipation air duct in various states, ensures the heat dissipation requirement of the whole machine, and has high reliability. The airborne antenna comprises any one of the above airborne antenna heat dissipation devices.

Description

Technical Field

[0001] This invention relates to the field of radar antennas, and in particular to an airborne antenna heat dissipation device and an airborne antenna. Background Technology

[0002] Large-aperture airborne phased array antennas generate a lot of heat, and natural heat dissipation is insufficient to meet the cooling requirements, necessitating auxiliary cooling measures. Airborne phased array equipment is located outside the cabin, where heat dissipation is somewhat limited. Liquid cooling is highly efficient, but it is difficult to obtain airworthiness certification in the civil aviation field. Air cooling requires air inlets and outlets to form an airflow duct; if the fan is not protected, the high-speed airflow during high-speed flight can easily cause the fan to spin at high speed, resulting in fan damage and posing a significant flight safety hazard. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes an airborne antenna heat dissipation device and an airborne antenna. The technical solution adopted is as follows.

[0004] An airborne antenna heat dissipation device, comprising

[0005] The base has an internal airflow channel and a first air inlet and a first air outlet that communicate with the airflow channel.

[0006] A radiator, which is mounted on the base and located in the airflow channel;

[0007] A fan module is installed in the base and is horizontally spaced between the first air inlet and the first air outlet. The fan module has a second air inlet and a second air outlet. The second air inlet communicates with the first air inlet, and the second air outlet communicates with the second air outlet. A first airflow gap exists between the fan module and the airflow channel.

[0008] A first movable plate is movably disposed at the second air inlet. The first movable plate can open or close the second air inlet. A second airflow gap exists between the first movable plate and the airflow channel.

[0009] The second movable plate is movably disposed at the second air outlet, and the second movable plate can open or close the second air outlet.

[0010] A third movable plate is movably disposed at the first airflow gap, and the third movable plate is capable of opening or closing the first airflow gap.

[0011] The airborne antenna heat dissipation device of this invention has at least the following beneficial effects: When the aircraft is stationary, the first, second, and third movable plates are all in a vertical position due to gravity. The fan module is in operation, and the air blown by the fan module will lift the vertically positioned second movable plate to a certain angle. The vertically positioned third movable plate will block the airflow from passing through the first airflow gap. The gas entering the airflow channel from the first air inlet will flow through the second airflow gap and enter the fan module. The fan module will blow the gas onto the heat sink, thereby cooling the heat sink. Heat is carried away. When the aircraft is in flight, the fan module is not working, so the second movable plate at the second air outlet is in a vertical position, thus closing the second air outlet. The airflow blowing in from the first air inlet blows the first movable plate to close the second air inlet. At the same time, the airflow blowing in from the first air inlet also blows the third movable plate to open the first airflow gap. Therefore, the airflow entering from the first air inlet will flow through the first airflow gap and finally blow onto the heat sink. This allows the airborne antenna to dissipate heat whether the aircraft is stationary or in flight, ensuring the overall heat dissipation requirements of the aircraft and high reliability.

[0012] According to other embodiments of the airborne antenna heat dissipation device of the present invention, the fan module includes a housing and a plurality of fans. The housing is mounted on the base, and each of the fans is fixed side by side inside the housing. A second air inlet is formed on one side of the housing, and a second air outlet is formed on the other side of the housing.

[0013] According to other embodiments of the airborne antenna heat dissipation device of the present invention, the second air inlet has an inclined structure.

[0014] According to other embodiments of the airborne antenna heat dissipation device of the present invention, the airflow channel is provided with an inclined guide surface, the guide surface is located above the second air outlet, and the guide surface is used to guide the airflow blown out of the second air outlet to the heat sink.

[0015] According to other embodiments of the airborne antenna heat dissipation device of the present invention, the first air inlet is configured as an arc-shaped structure surrounding the first movable plate.

[0016] According to other embodiments of the airborne antenna heat dissipation device of the present invention, a grille is provided at the first air inlet.

[0017] According to other embodiments of the airborne antenna heat dissipation device of the present invention, the first air outlet is configured as an arc-shaped structure surrounding the air outlet side of the heat sink.

[0018] According to other embodiments of the airborne antenna heat dissipation device of the present invention, a grille is provided at the first air outlet.

[0019] According to other embodiments of the present invention, the airborne antenna heat dissipation device includes a plurality of spaced-apart heat dissipation teeth.

[0020] An airborne antenna, comprising the airborne antenna heat dissipation device described in any one of the above.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the airflow channel in one embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram showing the positional relationship between the fan module and the first movable plate, the second movable plate, and the third movable plate in one embodiment of the present invention.

[0026] Figure labels: 100, base; 101, airflow channel; 102, first air inlet; 103, first air outlet; 104, airflow guide surface; 200, heat sink; 201, heat dissipation fins; 300, fan module; 301, housing; 302, fan; 400, first movable plate; 500, second movable plate; 600, third movable plate. Detailed Implementation

[0027] The following will describe the concept and technical effects of the present invention clearly and completely with reference to embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention.

[0028] In the description of the embodiments of the present invention, if directional descriptions are involved, such as "up", "down", "front", "back", "left", "right" etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings, it is only for the convenience of describing the present invention and simplifying the description, and is 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 therefore should not be construed as a limitation of the present invention.

[0029] In the description of the embodiments of the present invention, if a feature is referred to as "setting," "fixing," "connecting," or "installing" on another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, connected, or installed on the other feature. In the description of the embodiments of the present invention, if "several" is involved, it means one or more; if "multiple" is involved, it means two or more; if "greater than," "less than," or "exceeds," it should be understood as excluding the stated number; if "above," "below," or "within," it should be understood as including the stated number. If "first" or "second" is involved, it should be understood as used to distinguish technical features, and not as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0030] Large-aperture airborne phased array antennas generate a lot of heat, and natural cooling is insufficient to meet the requirements, necessitating auxiliary cooling measures. Airborne phased array equipment is located outside the cabin, where heat dissipation is somewhat limited. Liquid cooling is highly efficient, but it is difficult to obtain airworthiness certification in the civil aviation field. Air cooling requires air inlets and outlets to form an airflow duct; if the fan is not protected, the high-speed airflow during high-speed flight can easily cause the fan to spin at high speed, resulting in fan damage and posing a significant flight safety hazard.

[0031] See Figures 1 to 3 This invention provides an airborne antenna heat dissipation device, including a base 100, a heat sink 200, a fan module 300, a first movable plate 400, a second movable plate 500, and a third movable plate 600. The base 100 has an internal airflow channel 101, and the base 100 has a first air inlet 102 and a first air outlet 103 communicating with the airflow channel 101. The heat sink 200 is mounted on the base 100 and located between the first air inlet 102 and the first air outlet 103. The fan module 300 is mounted in the base 100 and transversely spaced between the first air inlet 102 and the heat sink 200. The fan module 300 has a second air inlet and a third movable plate 600. The second air outlet is connected to the first air inlet 102 and faces the radiator 200. There is a first airflow gap between the fan module 300 and the airflow channel 101. The first movable plate 400 is movably disposed at the second air inlet and can open or close the second air inlet. There is a second airflow gap between the first movable plate 400 and the airflow channel 101. The second movable plate 500 is movably disposed at the second air outlet and can open or close the second air outlet. The third movable plate 600 is movably disposed at the first airflow gap and can open or close the first airflow gap.

[0032] When the aircraft is stationary, the first movable plate 400, the second movable plate 500, and the third movable plate 600 are all in a vertical position due to gravity. The fan module 300 is in operation. The air blown by the fan module 300 will lift the vertically positioned second movable plate 500 to a certain angle. The air entering the airflow channel 101 from the first air inlet 102 flows through the second airflow gap into the fan module 300. The fan module 300 will blow the drawn-in air onto the radiator 200, thereby carrying away the heat from the radiator 200. The vertically positioned third movable plate 600 will block the airflow from the first airflow gap. When the aircraft is in flight, the fan module 300 is not working, so the second movable plate 500 at the second air outlet is in a vertical position, closing the second air outlet. The airflow blowing in from the first air inlet 102 blows the first movable plate 400 to close the second air inlet. At the same time, the airflow blowing in from the first air inlet 102 also blows the third movable plate 600 to open the first airflow gap. Therefore, the airflow entering from the first air inlet 102 will flow through the first airflow gap and finally blow onto the radiator 200. In this way, heat dissipation can be achieved whether the aircraft is stationary or in flight, ensuring the overall heat dissipation requirements and high overall reliability.

[0033] In some embodiments, a first air inlet 102 is provided on one side of the base 100 and a first air outlet 103 is provided on the other side. The airflow channel 101 is a chamber structure set inside the base 100, which connects the first air inlet 102 and the first air outlet 103.

[0034] The base 100 has a mounting slot near the first air inlet 102. The fan module 300 is fixed in the mounting slot. The second air inlet of the fan module 300 faces the first air inlet 102 of the base 100, and the second air outlet of the fan module 300 faces the first air outlet 103 of the base 100.

[0035] The radiator 200 is mounted on the base 100. The radiator 200 has a plurality of spaced heat dissipation teeth 201. Each heat dissipation tooth 201 on the radiator 200 extends into the airflow channel 101 of the base 100. The heat dissipation teeth 201 are located between the second air outlet and the first air outlet 103. A heat dissipation channel is formed between two adjacent heat dissipation teeth 201. The extension direction of the heat dissipation channel is the same as the direction of airflow from the second air outlet to the first air outlet 103.

[0036] In some embodiments, the fan module 300 includes a housing 301 and a plurality of fans 302. The housing 301 is mounted on the base 100. A second air inlet is formed on one side of the housing 301 and a second air outlet is formed on the other side of the housing 301. Each fan 302 is fixed side by side inside the housing 301.

[0037] Specifically, the housing 301 is horizontally positioned between the first air inlet 102 and the heat sink 200. Multiple fans 302 are installed side by side inside the housing 301. During operation, the simultaneous blowing of multiple fans 302 results in higher heat dissipation efficiency. A certain distance is maintained between the bottom of the housing 301 and the airflow channel 101 to form a gap for gas to flow through; this gap is the first airflow gap.

[0038] The third movable plate 600 is rotatably installed at the bottom of the box 301, thereby controlling the opening and closing state of the first airflow gap.

[0039] In some embodiments, the top of the first movable plate 400 is rotatably mounted inside the base 100 via a pivot. The first movable plate 400 is located between the first air inlet 102 and the second air inlet. When the aircraft is in flight, the airflow entering the first air inlet 102 will blow the first movable plate 400 to rotate, thereby closing the second air inlet on the housing 301.

[0040] Of course, the top of the first movable plate 400 can also be rotatably mounted on the side of the box 301 where the second air inlet is located.

[0041] When the first movable plate 400 is rotatably installed between the first air inlet 102 and the second air inlet, the first movable plate 400 and the inner wall of the airflow channel 101 are separated by a certain gap, which is the second airflow gap. When the first movable plate 400 is in a vertical state, the airflow entering from the first air inlet 102 will pass through the second airflow gap and enter the second air inlet of the fan module 300.

[0042] To enable the first movable plate 400 to quickly switch the opening and closing state of the second air inlet, in some embodiments, the second air inlet is designed as an inclined structure. When the aircraft is stationary, the first movable plate 400 is in a vertical state under the action of gravity. At this time, there is an opening between the first movable plate 400 and the inclined second air inlet, which facilitates airflow into the fan module 300. When the aircraft is in flight, the airflow entering from the first air inlet 102 will blow the first movable plate 400 to cover the inclined second air inlet, thereby closing the second air inlet of the fan module 300.

[0043] In some embodiments, the airflow channel 101 is provided with an inclined guide surface 104, which is located above the second air outlet and is used to guide the airflow from the fan module 300 to the heat sink 200.

[0044] Specifically, the interior of the airflow channel 101 is designed with an inclined plane structure at the top of the second air outlet. The air blown out from the second air outlet of the fan module 300 can flow into the heat dissipation denticle 201 after passing through the guide surface 104, thus carrying away the heat in the heat dissipation denticle 201.

[0045] In addition, the guide surface 104 also serves to limit the upward tilt angle of the second movable plate 500 when the fan module 300 blows air.

[0046] After the second movable plate 500 is flipped up, it will fit against the airflow guide surface 104. At this time, the second movable plate 500 will guide the airflow blown out by the fan module 300 to the heat sink 200.

[0047] To increase the air intake area of ​​the first air inlet 102, in some embodiments, the first air inlet 102 is configured as an arc-shaped structure surrounding the first movable plate 400. This results in a wider air intake area.

[0048] In some other embodiments, a grille is provided at the first air inlet 102. When the airflow enters the first air inlet 102, it is diverted by the grille, resulting in more uniform airflow.

[0049] In some embodiments, the first air outlet 103 is configured as an arc-shaped structure surrounding the air outlet side of the radiator 200, thus providing a larger air outlet area.

[0050] In some embodiments, a grille is provided at the first air outlet 103, so that the air flowing out of the first air outlet 103 is more evenly distributed after passing through the grille.

[0051] The present invention also provides an airborne antenna, including any of the above-mentioned airborne antenna heat dissipation devices.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An airborne antenna heat dissipation device, characterized by: The application relates to a heat dissipation device for an onboard antenna. The heat dissipation device comprises a base, a heat sink, a fan module, a first movable plate, a second movable plate and a third movable plate. The base is internally provided with an airflow channel, and is externally provided with a first air inlet and a first air outlet which are communicated with the airflow channel. The heat sink is installed on the base and located between the first air inlet and the first air outlet. The fan module is installed in the base and horizontally separated between the first air inlet and the heat sink. The fan module has a second air inlet and a second air outlet. The second air inlet is communicated with the first air inlet.

2. The airborne antenna heat sink device of claim 1, wherein: The second air outlet is directed to the heat sink.

3. The airborne antenna heat sink device of claim 2, wherein: The fan module has a first airflow gap with the airflow channel.

4. The airborne antenna heat sink device of claim 1, wherein: The first movable plate is movably arranged at the second air inlet.

5. The airborne antenna heat sink device of claim 1, wherein: The first movable plate can open or close the second air inlet.

6. The airborne antenna heat sink device of claim 5, wherein: The first movable plate has a second airflow gap with the airflow channel.

7. The airborne antenna heat sink device of claim 1, wherein: The second movable plate is movably arranged at the second air outlet.

8. The airborne antenna heat sink device of claim 7, wherein: The second movable plate can open or close the second air outlet.

9. The airborne antenna heat sink device of claim 1, wherein: The third movable plate is movably arranged at the first airflow gap.

10. An antenna on board, characterized by: The third movable plate can open or close the first airflow gap. The fan module comprises a box body and a plurality of fans. The box body is installed on the base. Each fan is fixed in the box body. One side of the box body forms the second air inlet. The other side of the box body forms the second air outlet. The second air inlet is in an inclined structure. The airflow channel is internally provided with an inclined flow guide surface. The flow guide surface is located above the second air outlet. The flow guide surface is used for guiding the airflow blown out of the second air outlet to the heat sink. The first air inlet is in an arc structure surrounding the first movable plate. The first air inlet is provided with a grille. The first air outlet is in an arc structure surrounding the air outlet side of the heat sink. The first air outlet is provided with a grille. The heat sink comprises a plurality of spaced heat dissipation teeth. The heat dissipation device for the onboard antenna is provided in any one of claims 1 to 9.

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