Array surface front end efficient air cooling heat dissipation structure

By designing an efficient air-cooled heat dissipation structure at the front end of the array, and using hollow interlayer composites and integrated static pressure chambers to send and return air chambers, the problem of difficulty in liquid delivery of array antennas and radomes and the existing air-cooled heat dissipation structures reaching the heat exchange limit is solved, and the effect of significantly improving air-cooled heat dissipation efficiency and reducing the working temperature of the radomes is achieved.

CN120016117APending Publication Date: 2025-05-16CHINA SHIPBUILDING IND CORP NO 723 RESEARCH INSTITUTE
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510166316.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-14
Publication Date
2025-05-16

AI Technical Summary

Technical Problem

Due to the difficulty of liquid dissipation, the array antenna and radome at the front end of the array have reached the limit of heat exchange, making it difficult to effectively dissipate heat.

Method used

A high-efficiency air-cooled heat dissipation structure at the front end of the array is designed, including the array frame, air supply port, air outlet, air supply chamber, return air chamber, array antenna and radome. The radon electrical performance area uses hollow interlayer composite materials, and air inlet and outlet openings are provided on both sides of the electrical performance area, so that the cooling air can circulate directly inside it. At the same time, the air supply chamber and return air chamber integrate static pressure chamber and air duct functions to ensure that the cooling air flows as much as possible from the antenna array.

Benefits of technology

It significantly improves the air-cooled heat dissipation efficiency, avoids the cooling air idling, fully utilizes the heat-carrying ability of the cooling air, reduces the working temperature of the radome, and extends the service life of the equipment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure HDA0005272565310000011
    Figure HDA0005272565310000011
  • Figure HDA0005272565310000012
    Figure HDA0005272565310000012
  • Figure HDA0005272565310000021
    Figure HDA0005272565310000021
Patent Text Reader

Abstract

The invention relates to an array surface front end efficient air cooling heat dissipation structure which comprises an array surface frame, an air supply opening, an air outlet pipe combination, an air supply cavity, an air return cavity, an array antenna and an antenna cover. The integrated air supply and return channel is arranged at the front end of the array surface, cooling air is provided for the array antenna and the antenna housing, idling of the cooling air is avoided, and the heat carrying capacity is fully exerted; a hollow interlayer wave-transmitting material is adopted in an electrical property area of the antenna housing, and an air inlet and an air outlet are formed in a transition part of the electrical property area and a non-electrical property area, so that cooling air directly circulates in the antenna housing, heat accumulation in the antenna housing is avoided, and the air-cooling heat dissipation efficiency is remarkably improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention belongs to the field of cooling electronic equipment, and in particular relates to a high-efficiency air-cooling heat dissipation structure at the front end of an array. Background Art

[0002] With the increase in the size and output power of radar arrays, the heat consumption and heat flux density of electronic modules continue to rise. Electronic modules with high heat consumption or high heat flux density have gradually adopted liquid cooling cold plates or liquid cooling + conduction cooling for efficient heat dissipation. However, the array antenna and antenna cover at the front of the array are difficult to pass liquid, and the existing air-cooled heat dissipation structure has basically reached the heat exchange limit. At present, the temperature rise of the array antenna and antenna cover is mainly controlled by further reducing the air supply temperature and increasing the air supply volume. In particular, the antenna cover, whose heat consumption mainly comes from the RF signal loss in the electrical performance area and the solar radiation on the outer surface, has a large heat consumption. When the operating temperature of the antenna cover is too high, it will not only affect its own stable and reliable operation, but also further increase the RF signal loss; when its operating temperature exceeds its tolerance temperature limit, the antenna cover will carbonize and cause the electrical performance indicators of the radar equipment to deteriorate rapidly.

[0003] At present, the radome mainly adopts a skin honeycomb sandwich structure, with a skin thermal conductivity of 0.4W / m·K and a core thermal conductivity of 0.02W / m·K. The overall thermal conductivity of the radome is low, and the heat generated by the RF signal loss is difficult to efficiently conduct to the outer surface of the radome. Summary of the invention

[0004] The purpose of the present invention is to provide a high-efficiency air-cooling and heat dissipation structure at the front end of the array to solve the problem that the array antenna and antenna cover at the front end of the array have difficulty in passing liquid, and the existing air-cooling and heat dissipation structure has basically reached the heat exchange limit, so as to provide cooling air for the array antenna and antenna cover at the front end of the array, avoid idling, and give full play to the heat carrying capacity of the cooling air.

[0005] The technical solution for achieving the purpose of the present invention is: a high-efficiency air-cooled heat dissipation structure at the front end of an array, including an array frame, an air supply port, an air outlet, an air supply cavity, an air return cavity, an array antenna, and an antenna cover. The array antenna is arranged on the array frame, and the antenna cover is arranged on the array antenna. An air duct is arranged between the antenna cover and the array antenna, and the air supply port and the air outlet of the air duct are arranged on opposite sides of the array frame.

[0006] Preferably, the electrical performance area of ​​the antenna cover is provided with a hollow interlayer, and the air inlet and the air outlet of the hollow interlayer are respectively connected to the air duct.

[0007] Preferably, an air supply cavity and an air return cavity are respectively provided at the connection between the air duct and the hollow interlayer.

[0008] Preferably, transition air ducts are provided between the air supply port and the air supply cavity, and between the air return cavity and the air outlet.

[0009] Preferably, the transition air duct is trumpet-shaped, thereby forming an air duct with a gradually varying cross-section.

[0010] Preferably, the air supply cavity is arranged in a three-way form, with the inlet connected to the transition air duct, and the cooling air is respectively delivered to the air inlet of the hollow interlayer of the antenna cover; the return air cavity is arranged in a three-way form, with the inlet respectively aligned with the array antenna and the air outlet of the hollow interlayer of the antenna cover, and the outlet is connected to the transition air duct.

[0011] Preferably, the air supply cavity and the air return cavity are made of wave-transparent materials.

[0012] Compared with the prior art, the present invention has the following significant advantages:

[0013] 1) The electrical performance area of ​​the radome is made of hollow sandwich composite materials, and air inlets and outlets are set on both sides of the electrical performance area to allow cooling air to flow directly inside it, significantly improving the air cooling and heat dissipation efficiency.

[0014] 2) The air supply cavity and the air return cavity integrate the static pressure cavity and the air duct function. The height of the air outlet to the array antenna is less than the antenna height, ensuring that the cooling air flows through the antenna array as much as possible, avoiding the idling of the cooling air and reducing the ineffective heat-carrying circulation of the cooling air.

[0015] 3) Transition air ducts are designed on both sides of the array frame to form a gradient cross-section air duct while completing the structural strengthening and weight reduction design to achieve structural and functional integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the explosion of the front end (radome) of the array of the present invention;

[0017] Figure 2 is a cross-sectional view of the front end (radome) of the array of the present invention;

[0018] Figure 3 It is a schematic diagram of the explosion of the front end of the array (honeycomb sandwich antenna cover) of the present invention;

[0019] Figure 4 It is a cross-sectional view of the front end of the array (honeycomb sandwich antenna cover) of the present invention;

[0020] Figure 5 It is a temperature cloud diagram of the inner and outer surfaces of the antenna cover at the front end (radome) of the array of the present invention;

[0021] Figure 6 It is a surface temperature cloud diagram of the array antenna at the front end (radome) of the array of the present invention;

[0022] Figure 7 It is a temperature cloud diagram of the inner and outer surfaces of the antenna cover at the front end (honeycomb sandwich antenna cover) of the array of the present invention;

[0023] Figure 8It is a cloud diagram of the surface temperature of the array antenna at the front end (honeycomb sandwich antenna cover) of the present invention.

[0024] in:

[0025] 1- array frame, 2- air supply port, 3- air outlet, 4- air supply cavity, 5- air return cavity, 6- array antenna, 7- radome, 8- honeycomb sandwich radome;

[0026] 1-1- Transition air duct;

[0027] 7-1-radiome electrical performance area, 7-2-hollow interlayer air inlet, 7-3-hollow interlayer air outlet;

[0028] 8-1-Electrical performance area of ​​honeycomb sandwich antenna cover. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0030] like Figure 1 , 2 As shown, a high-efficiency air-cooling and heat dissipation structure at the front end of an array includes an array frame 1, an air supply port 2, an air outlet, an air supply cavity 4, a return air cavity 5, an array antenna 6, and an antenna cover 7.

[0031] The array frame 1 is the main supporting structure at the front end of the array, and serves to install the air supply port 2, the air outlet port 3, the air supply cavity 4, the air return cavity 5, the array antenna 6, and the antenna cover 7; specifically, the array antenna 6 is arranged on the array frame 1, and the antenna cover 7 is arranged on the array antenna 6. An air duct is provided between the antenna cover 7 and the array antenna 6, and the air supply port 2 and the air outlet port 3 of the air duct are arranged on opposite sides of the array frame 1.

[0032] In a further embodiment, the antenna cover 7 is provided with a hollow interlayer; the air inlet 7-2 of the hollow interlayer and the air outlet 7-3 of the hollow interlayer are respectively connected to the air duct. The connection between the air duct and the hollow interlayer is provided with an air supply cavity 4 and an air return cavity 5 respectively.

[0033] In a further embodiment, a transition duct 1-1 is provided between the air supply port 2 and the air supply cavity 4 and between the return air cavity 5 and the air outlet. The transition duct 1-1 is trumpet-shaped, and while forming a gradient cross-section duct, it completes the structural strengthening and weight reduction design to achieve structural and functional integration.

[0034] The air supply cavity 4 is set in a three-way form, and the inlet is connected to the transition air duct 1-1, and the cooling air is respectively sent to the air inlet 7-2 of the hollow interlayer of the antenna cover 7. The return air cavity 5 is set in a three-way form, and the inlet is respectively aligned with the array antenna 6 and the air outlet 7-3 of the hollow interlayer of the antenna cover, and the outlet is connected to the transition air duct 1-1. The array antenna 6 is installed in the array frame 1 through the cable adapter plate. The heat loss mainly comes from the RF signal loss, and the heat loss cannot be ignored. However, its array arrangement has a large heat exchange area. When designing the heat dissipation, it is ensured that the cooling air flows through the antenna array as much as possible.

[0035] like Figure 3 , 4 As shown, when the electrical performance area of ​​the antenna cover adopts a honeycomb sandwich structure, the openings of the air supply cavity 4 and the return air cavity 5 at the front end of the array to the electrical performance area 7-1 of the honeycomb clamp antenna cover are arranged close to the antenna cover 7, ensuring that the cooling air flows as close to the surface of the electrical performance area 7-1 of the honeycomb clamp antenna cover as possible, but its heat exchange area is much smaller than that of the electrical performance area 7-1 of the antenna cover in which the cooling air can flow. Under the same working conditions, the operating temperature of the honeycomb sandwich antenna cover 7 will be higher.

[0036] In the present invention, an integrated supply and return air channel is set at the front end of the array to provide cooling air for the array antenna 6 and the antenna cover 7, avoid idling of the cooling air, and give full play to the heat carrying capacity; air inlets 7-2 and hollow interlayer air outlets 7-3 are set on both sides of the electrical performance area 7-1 of the antenna cover to allow cooling air to flow directly inside it, avoid heat accumulation inside the antenna cover 7, and significantly improve the air cooling and heat dissipation efficiency.

[0037] The array antenna is installed in the array frame via a cable adapter plate. The heat loss mainly comes from the RF signal loss, which cannot be ignored. However, the array arrangement itself has a large heat exchange area. When designing the heat dissipation, it is necessary to ensure that the cooling air flows through the antenna array as much as possible.

[0038] The heat loss of the radome mainly comes from the RF signal loss in the electrical performance area and the solar radiation on the outer surface. The electrical performance area of ​​the radome is made of hollow sandwich composite materials, and air inlets and outlets are set on both sides of the electrical performance area to allow cooling air to flow directly inside it, significantly improving the efficiency of air cooling and heat dissipation; at the same time, considering the strength design requirements of the radome, a reinforcement layer is laid at the transition between the electrical performance area and the non-electrical performance area.

[0039] By setting up an integrated supply and return air channel at the front end of the array, cooling air is provided for the array antenna and antenna cover, avoiding idling of the cooling air and giving full play to the heat carrying capacity; hollow sandwich wave-transparent material is used in the electrical performance area of ​​the antenna cover, and inlet and outlet are set at the transition between the electrical performance area and the non-electrical performance area, so that cooling air can flow directly inside it, avoiding heat accumulation inside the antenna cover and significantly improving the air cooling efficiency.

[0040] like Figures 5 to 8The following are the thermal simulation temperature cloud diagrams of the front end of the array under the two antenna covers under the same heat consumption and environmental conditions. Among them, the heat consumption of the array antenna is 1851.4W, the heat consumption of the antenna cover electrical performance area is 2822.4W, and the solar radiation intensity is 1120W / m 2 ; The air supply temperature at the front end of the array is 23℃ and the air volume is 1200m 3 / h.

[0041] The simulation results are as follows:

[0042] 1 The maximum inner surface temperature of the electrical performance zone 7-1 of the antenna cover is 68.2℃, and the maximum outer surface temperature is 77.2℃. The maximum inner surface temperature of the electrical performance zone 7-1 of the honeycomb clamp antenna cover is 169.0℃, and the maximum outer surface temperature is 208.1℃, indicating that the heat dissipation effect of the internal ventilation of the antenna cover is significant.

[0043] The internal ventilation of the antenna cover 7 reduces the cooling air volume passing through the array antenna 6, and the maximum temperature of the array antenna 6 changes from 72.0℃ in the case of the honeycomb sandwich antenna cover 8 to 75.4℃. According to the temperature index requirements, simulation optimization can be performed by adjusting the opening sizes of the air supply cavity 4, the return air cavity 5 to the electrical performance area 7-1 of the antenna cover and the array antenna 6.

[0044] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-efficiency air-cooling heat dissipation structure at the front end of the array, characterized in that: The invention comprises an array frame (1), an air supply port (2), an air outlet (3), an air supply cavity (4), an air return cavity (5), an array antenna (6), and an antenna cover (7); the array antenna (6) is arranged on the array frame (1); the antenna cover (7) is arranged on the array antenna (6); an air duct is arranged between the antenna cover (7) and the array antenna (6); the air supply port (2) and the air outlet (3) of the air duct are arranged on opposite sides of the array frame (1).

2. The high-efficiency air-cooling heat dissipation structure at the front end of the array according to claim 1 is characterized in that: The electrical performance area of ​​the antenna cover (7) is provided with a hollow interlayer, and the hollow interlayer air inlet (7-2) and the hollow interlayer air outlet (7-3) are respectively connected to the air duct.

3. The high-efficiency air-cooling heat dissipation structure at the front end of the array according to claim 2 is characterized in that: An air supply cavity (4) and an air return cavity (5) are respectively provided at the connection between the air duct and the hollow interlayer.

4. The high-efficiency air-cooling heat dissipation structure at the front end of the array according to claim 1 is characterized in that: A transition air duct (1-1) is provided between the air supply port (2) and the air supply cavity (4), and between the air return cavity (5) and the air outlet (3).

5. The high-efficiency air-cooling heat dissipation structure at the front end of the array according to claim 4 is characterized in that: The transition air duct (1-1) is trumpet-shaped, thereby forming an air duct with a gradually changing cross-section.

6. The high-efficiency air-cooling heat dissipation structure at the front end of the array according to claim 4, characterized in that: The air supply chamber (4) is arranged in a three-way form, with its inlet connected to the transition air duct (1-1), and the cooling air is respectively delivered to the air inlet (7-2) of the hollow interlayer of the antenna cover (7) and the air duct between the antenna cover (7) and the array antenna (6); the return air chamber (5) is arranged in a three-way form, with its inlet respectively aligned with the array antenna (6) and the air outlet (7-3) of the hollow interlayer of the antenna cover, and its outlet connected to the transition air duct (1-1).

7. The high-efficiency air-cooling heat dissipation structure at the front end of the array according to claim 3 is characterized in that: The air supply cavity (4) and the air return cavity (5) are made of wave-transmitting materials.