Airborne antenna equipment heat dissipation system

Abstract

The invention discloses an airborne antenna equipment heat dissipation system, and relates to the technical field of avionics equipment heat dissipation, the airborne antenna equipment heat dissipation system comprises a fairing arranged on a skin and an antenna cover which forms a closed space with the fairing and the skin in an enclosing manner, a bearing disc which is in heat conduction with the fairing is arranged in the closed space, and an antenna is fixedly mounted on the bearing disc and is in heat conduction with the bearing disc; the leeside of the fairing is provided with an air inlet and an air outlet, one end of the antenna with the cooling fan faces the windward side of the fairing, the air inlet corresponds to the side wall of the antenna parallel to the course, and the air outlet corresponds to the other end of the antenna away from the cooling fan; heat dissipation fins are arranged on the bearing disc, and air flow of the air inlet enters the closed space through the heat dissipation fins. The antenna device can effectively solve the problem of heat dissipation failure caused by air duct blockage, freezing and the like due to entry of foreign matters, heat conduction and heat dissipation are carried out on the antenna through the bearing disc and the fairing, and the heat dissipation efficiency of the antenna device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of avionics heat dissipation, in particular to an airborne antenna device heat dissipation system. BACKGROUND

[0002] With the continuous enhancement of the communication function of the airborne antenna device, the heat dissipation demand of the skin-out antenna device is also increasing. Therefore, how to efficiently and reliably dissipate heat for the outboard antenna has become a problem that must be considered in the installation design of the outboard antenna.

[0003] The current outboard antenna heat dissipation mainly adopts air cooling heat dissipation, which introduces high-speed airflow for heat dissipation through the air duct opened on the antenna cover. However, the air duct opened on the windward surface is prone to cause problems such as foreign matter blockage, icing, whistling and poor reliability. At the same time, air cooling heat dissipation is mainly carried out inside the antenna cover, and the space inside the antenna cover is closed, so the heat dissipation efficiency is limited and cannot meet the heat dissipation requirements of the existing airborne antenna device.

[0004] Therefore, how to improve the heat dissipation efficiency and reliability of the antenna device is a technical problem to be solved by those skilled in the art. SUMMARY

[0005] The purpose of the present application is to provide an airborne antenna device heat dissipation system, which can effectively solve the heat dissipation failure problem caused by foreign matter entering and causing air duct blockage, icing and the like, and utilize the heat dissipation of the support tray and the fairing to heat and dissipate heat for the antenna, thereby improving the heat dissipation efficiency of the antenna device.

[0006] To achieve the above-mentioned purpose, the present application provides an airborne antenna device heat dissipation system, which comprises a fairing arranged on a skin and an antenna cover formed by the fairing, the skin and the antenna cover, wherein the antenna cover is provided with a support tray in thermal contact with the fairing, and an antenna is fixedly installed on the support tray and in thermal contact with the support tray.

[0007] The back surface of the fairing is provided with an air inlet and an air outlet, one end of a heat dissipation fan of the antenna faces the windward surface of the fairing, the air inlet corresponds to the side wall of the antenna parallel to the heading, and the air outlet corresponds to the other end of the antenna away from the heat dissipation fan.

[0008] The support tray is provided with heat dissipation fins, and the airflow of the air inlet enters the closed space through the heat dissipation fins.

[0009] Optionally, in the first state, the heat dissipation fan stops working, and the heat of the antenna is transferred to the fairing by the support tray.

[0010] In the second state, the heat dissipation fan is started, air flows into the closed space through the heat dissipation fins, and is discharged from the air outlet after flowing through the inside of the antenna; and / or, in the second state, the heat dissipation fan is started, air flows into the closed space through the heat dissipation fins, and is discharged from the air outlet after flowing through the periphery of the antenna.

[0011] Optionally, the number of air inlets is one or more, and the air inlets are located at the end of the leeward surface close to the windward surface, and the air outlet is located in the middle of the leeward surface.

[0012] Optionally, the contact surface of the antenna and the supporting tray is provided with a heat-conducting medium.

[0013] Optionally, the supporting tray and the fairing are designed as a whole.

[0014] Optionally, the supporting tray and the fairing are designed separately, the supporting tray and the fairing have a continuous contact surface, and the contact surface of the supporting tray and the fairing is provided with a heat-conducting medium.

[0015] Optionally, the heat dissipation fins are also provided at one end of the supporting tray corresponding to the heat dissipation fan, and the air duct formed by the heat dissipation fan in the antenna is parallel to the heading and parallel to the corresponding heat dissipation fins.

[0016] Optionally, the air inlets and the air outlet are constructed as a grid structure.

[0017] Optionally, the outer wall of the fairing is smoothly connected to the radome.

[0018] Optionally, the antenna is detachably mounted on the supporting tray, the upper wall of the antenna and the radome have a space for air flow, and the space is communicated with the air inlets and the air outlet through the closed space.

[0019] With respect to the above background, the present application cancels the design of setting the air inlet on the windward surface, but sets the air inlet on the leeward surface of the fairing, avoids the direct entry of foreign matter, rainwater and the like into the antenna device, and prevents the heat dissipation failure problem caused by the blockage and icing of foreign matter. At the same time, in order to ensure that the antenna device has good heat dissipation efficiency, the present application conducts heat of the antenna to the fairing through the supporting tray, the fairing can realize natural convection heat dissipation with the external low-temperature environment, and thus the heat dissipation efficiency of the antenna device is improved. In addition, the air inlet of the antenna device corresponds to both sides of the middle part of the antenna, and the airflow of the air inlet can enter the closed space through the heat dissipation fins on the supporting tray, so the airflow of the air inlet can also carry away part of the heat on the supporting tray, and under the action of the heat dissipation fan, the airflow moves from the air inlet to the heat dissipation fan, and after flowing through the inside of the antenna, the airflow is discharged from the air outlet, so that the airflow has a long flow path, the heat dissipation effect of the airflow on the supporting tray and the antenna is improved, and thus the heat dissipation efficiency of the antenna device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0021] Figure 1 The internal structure schematic diagram of the airborne antenna device heat dissipation system provided by the embodiments of the present application;

[0022] Figure 2 The external structure schematic diagram of the airborne antenna device heat dissipation system provided by the embodiments of the present application;

[0023] Figure 3 The top view of the airborne antenna device heat dissipation system hidden behind the antenna cover provided by the embodiments of the present application.

[0024] In the figure: 1-antenna; 2-fairing; 3-supporting tray; 4-antenna cover;

[0025] 11-heat dissipation fan;

[0026] 21-air inlet; 22-air outlet;

[0027] 31-heat dissipation fin. DETAILED DESCRIPTION

[0028] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0029] It should be noted that, in the present embodiment, the directions or positional relationships indicated by "upper", "lower", "front", "rear" and the like are based on the directions or positional relationships shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, "first", "second", "third", "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0030] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0031] As shown in Figures 1 to 3 In the present embodiment, an airborne antenna device heat dissipation system is provided, which comprises a fairing 2, a radome 4 and an antenna 1. The fairing 2 and the radome 4 together enclose a closed space with a skin for accommodating the antenna 1. The antenna 1 is arranged in the closed space, which can protect the antenna 1 from external environment (such as rain, dust).

[0032] A supporting tray 3 is arranged in the closed space and is in thermal conduction with the fairing 2, and the antenna 1 is fixedly installed on the supporting tray 3. The supporting tray 3 can provide a stable mounting platform for the antenna 1, and can also conduct heat with the antenna 1, so as to quickly conduct the heat generated by the antenna 1 during operation to the fairing 2, and realize heat exchange with the external environment through the fairing 2, thereby ensuring the heat dissipation effect of the antenna 1.

[0033] The supporting tray 3 is the main bearing structure of the antenna 1, and the mounting surface and the fixing hole position of the antenna 1 can be arranged on the supporting tray 3. The antenna 1 can be detachably mounted on the supporting tray 3 through screws, and different models of the antenna 1 can be supported in situ replacement, which has good compatibility, simple and fast disassembly and replacement, and quick maintenance work.

[0034] The air inlet 21 and the air outlet 22 are arranged on the leeward surface of the fairing 2. In the embodiment, the windward surface of the fairing 2 refers to the surface of the fairing 2 that can be directly impacted by the airflow when only considering the airflow parallel to the heading direction; and the leeward surface of the fairing 2 refers to the surface other than the windward surface, for example, the leeward surface includes the side surface of the fairing 2 parallel to the heading direction and the side surface behind the side surface. The air inlet 21 on the leeward surface will not be impacted by the high-speed airflow during sailing, and can effectively prevent foreign matters, rainwater and the like from entering the air inlet 21 at high speed, thereby avoiding the air inlet 21 from being blocked. It should be noted that the antenna 1 itself has the heat dissipation fan 11, and under the action of the heat dissipation fan 11, the airflow in the closed space flows in a direction, for example, the external air enters the closed space through the air inlet 21, then enters the antenna 1 through the heat dissipation fan 11, and finally is discharged through the air outlet.

[0035] In some embodiments, one end of the heat dissipation fan 11 of the antenna 1 faces the windward surface of the fairing 2, so that the arrangement direction of the antenna 1 as a whole is the same as the heading direction, and the air inlet 21 corresponds to the side wall of the antenna 1 parallel to the heading direction; wherein, since the antenna 1 is located in the above-mentioned closed space, the contour of the fairing 2 is larger than the contour of the antenna 1, that is, as shown in the top view of FIG. 1, the boundary of the antenna 1 is completely within the range of the fairing 2, and the air inlet 21 is arranged on the fairing 2, so that the air inlet 21 is spaced apart from the outer wall of the antenna 1, and the airflow can enter the closed space through the air inlet 21. Figure 3

[0036] The air outlet 22 corresponds to the end of the antenna 1 away from the heat dissipation fan 11, and when the airflow is discharged from the inside of the antenna 1, the airflow can be directly discharged out of the closed space through the air outlet 22, thereby taking away the heat generated by the antenna 1 during operation. It can be seen that the directional airflow path formed under the action of the heat dissipation fan 11 is: the air inlet 21-closed space-heat dissipation fan 11-antenna 1 inside-air outlet 22.

[0037] In addition, the heat dissipation fins 31 are arranged on the supporting plate 3, for example, the heat dissipation fins 31 are arranged on both sides of the antenna 1 and correspond to the air inlets 21 on both sides of the fairing 2, and the design of the heat dissipation fins 31 can increase the heat dissipation area of the antenna 1 and the supporting plate 3 and improve the heat dissipation efficiency; at the same time, when the airflow enters the closed space through the air inlet 21, the airflow can first flow through the heat dissipation fins 31, and the airflow can take away part of the heat on the supporting plate 3, thereby further improving the heat dissipation efficiency of the antenna 1.

[0038] ​In summary of the above embodiments, the application cancels the design of setting the air inlet 21 on the windward surface, and sets the air inlet 21 on the leeward surface of the fairing 2, so as to avoid the foreign matters, rain and the like directly entering the closed structure, and prevent the heat dissipation failure problem caused by the foreign matter blockage and icing. Meanwhile, in order to ensure that the antenna 1 device has good heat dissipation efficiency, the application conducts the heat of the antenna 1 to the fairing 2 through the supporting tray 3, the fairing 2 can realize natural convection heat dissipation with the external low-temperature environment, and thus the heat dissipation efficiency of the antenna 1 is improved. In addition, the air inlet 21 corresponds to the middle two sides of the antenna 1, and the airflow of the air inlet 21 can enter the closed space through the heat dissipation fins 31 on the supporting tray 3, so that the airflow of the air inlet 21 can also take away part of the heat on the supporting tray 3, and under the action of the heat dissipation fan 11, the airflow moves from the air inlet 21 to the heat dissipation fan 11, and is discharged from the air outlet 22 after flowing through the inside of the antenna 1, so that the airflow has a long flow path, the heat dissipation effect of the airflow on the supporting tray 3 and the antenna 1 is improved, and thus the heat dissipation efficiency of the antenna 1 is improved.

[0039] As can be seen, the application has at least two heat dissipation modes, one is that the heat of the antenna 1 is transmitted to the fairing 2 through heat conduction, and the heat is dissipated through the convection of the fairing 2 and the external environment; the other is that the directional heat dissipation path is generated through the heat dissipation fan 11, and the heat dissipation is realized.

[0040] For the above two modes, when flying at high altitude, the external environment temperature is low, at this time, the heat dissipation fan 11 can be closed, the heat generated by the antenna 1 is transmitted to the fairing 2 through the supporting tray 3, and only the natural heat dissipation of the fairing 2 and the external environment can ensure that the antenna 1 is in a safe working temperature; and since the heat dissipation fan 11 does not work, noise will not be generated due to the rotation of the heat dissipation fan 11, and the service life of the heat dissipation fan 11 is significantly improved. Meanwhile, the air inlet 21 of the application is located on the leeward surface of the fairing 2, when the heat dissipation fan 11 does not work, the high-speed airflow will not act on the heat dissipation fan 11, and the forced rotation of the heat dissipation fan 11 can be effectively avoided, which can effectively avoid the serious shortening of the fan life caused by the forced rotation of the heat dissipation fan 11.

[0041] When working on the ground, since the heat exchange efficiency of the fairing 2 and the external environment is reduced, the heat dissipation fan 11 can be started, so that the airflow enters the closed space through the air inlet 21, and then flows through the inside of the antenna 1 and is discharged from the air outlet, which also has the effect of improving the heat dissipation efficiency of the antenna 1. It should be pointed out that when working on the ground, the fairing 2 still has the function of natural heat dissipation, at this time, the above two heat dissipation modes can be carried out simultaneously.

[0042] When the heat dissipation fan 11 is started, part of the airflow under the negative pressure of the heat dissipation fan 11 can flow from the air inlet 21 to the heat dissipation fan 11 and into the antenna 1; another part of the airflow will not enter the antenna 1, but will directly flow from the air inlet 21 to the air outlet 22 and be discharged to the external environment. When the airflow directly flows from the air inlet 21 to the air outlet 22, the airflow will flow around the antenna 1, including but not limited to the two sides of the antenna 1. This part of the flowing airflow can also improve the heat dissipation efficiency of the antenna 1 to a certain extent.

[0043] And since the air inlet 21 of the present application is arranged on the leeward surface of the fairing 2, the howling caused by the interaction between the air inlet 21 and the high-speed airflow during navigation can be effectively avoided.

[0044] In the present application, the number of air inlets 21 is one or more, and the air inlets 21 are located on the leeward surface near the windward surface, that is, the air inlets 21 are located as close as possible to the windward surface on the leeward surface, but not on the windward surface; for example, the air inlets 21 are arranged on the side of the fairing 2 parallel to the heading, which intersects with the windward surface. Among them, the air outlet 22 is located in the middle of the leeward surface, so that the air inlets 21 are as far away from the air outlet as possible. When there are multiple air inlets 21, taking two air inlets 21 as an example, the two air inlets 21 are respectively located on the two ends of the leeward surface near the windward surface, and the distance between the air outlet 22 and the two air inlets 21 is the same. At this time, the distance between the air outlet 22 and the air inlets 21 is kept in the maximum state, which can prolong the path length of the airflow flowing from the air inlets 21 to the air outlet 22, thereby reducing or even avoiding the airflow from being discharged through the air outlet after entering the closed space through the air inlets 21 without passing through the heat dissipation fan 11 and the interior of the antenna 1. When the number of air inlets is greater than two, the air inlets 21 located on the same side of the fairing 2 can be arranged in the vertical direction, or can be arranged from the end of the leeward surface to the rear side, that is, multiple air inlets 21 can be arranged on the side of the fairing 2 parallel to the heading, or can be arranged on the leeward surface behind the side, as long as the air inlets 21 are located on the leeward surface.

[0045] In addition, in order to ensure the heat conduction effect between the antenna 1 and the support tray 3, a heat-conducting medium of a specific material can be arranged on the contact surface between the antenna 1 and the support tray 3. The specific material of the heat-conducting medium can be silicone grease or metal-based heat-conducting glue, etc.

[0046] In some embodiments, the support tray 3 can be designed integrally with the fairing 2. The integral design eliminates the assembly error between the fairing 2 and the support tray 3, ensures the connection cavity, and ensures the geometric consistency of the support tray 3 and the fairing 2 through overall machining, thereby optimizing the positioning accuracy of the antenna 1. In addition, the integral design can avoid the interface thermal resistance problem in the traditional split structure, and ensure the heat conduction efficiency of the support tray 3 and the fairing 2.

[0047] Of course, the support tray 3 can also be designed separately from the fairing 2, which allows the support tray 3 to be processed or replaced independently of the fairing 2, thereby reducing maintenance costs. In order to ensure the heat conduction efficiency and effect of the support tray 3 and the fairing 2, the support tray 3 and the fairing 2 can be provided with a continuous contact surface. Further, the outer wall of the support tray 3 and the inner wall of the fairing 2 can form an annular contact surface, and a heat conduction medium can be arranged on the contact surface to ensure the heat conduction efficiency and effect of the two. When the separate design is adopted, the support tray 3 can be made of a material different from that of the fairing 2 (for example, a combination of high-thermal-conductivity copper alloy and lightweight aluminum alloy), which can meet the requirements of heat dissipation and weight reduction.

[0048] Please refer to Figure 1 and Figure 3 The heat dissipation fins 31 can also be arranged on the support tray 3 and correspond to one end of the heat dissipation fan 11, wherein the air duct of the heat dissipation fan 11 is parallel to the heading direction and parallel to the corresponding heat dissipation fin 31. The heat dissipation fin 31 corresponding to the heat dissipation fan 11 can improve the heat exchange efficiency at the heat dissipation fan 11, and the heat exchange after the heat dissipation fin 31 corresponding to the heat dissipation fan 11 can more easily enter the air duct of the heat dissipation fan 11, so that it is more easily discharged into the external environment through the air outlet 22.

[0049] In addition, the air inlet 21 and the air outlet 22 can be constructed as a grid structure, which can effectively prevent blockage caused by foreign matter entering the air inlet 21, thereby ensuring reliable and stable operation of the heat dissipation system. In addition to the air inlet function, the air inlet 21 can also be used as a pressure relief port for balancing the air pressure inside and outside the enclosed space.

[0050] The outer wall of the fairing 2 is smoothly connected to the radome 4, and the cooperation between the fairing 2 and the radome 4 can provide the antenna 1 with aerodynamic shaping function, thereby reducing the overall wind resistance.

[0051] In some embodiments, in order to ensure the overall heat dissipation effect of the antenna 1 and to ensure that each side of the antenna 1 has a certain heat exchange capacity, a certain gap can be provided between the upper wall of the antenna 1 and the radome 4, and the gap is communicated with the air inlet 21 and the air outlet 22 through the enclosed space. When the airflow enters the enclosed space through the air inlet 21, part of the airflow will flow towards the air outlet 22 on both sides of the antenna 1, and the other part of the airflow will flow in the gap between the upper wall of the antenna 1 and the radome 4, thereby ensuring that each side of the antenna 1 has a certain heat exchange capacity.

[0052] It should be noted that in the present specification, relational terms such as first and second are used only to distinguish one entity from another, and do not necessarily require or imply any actual such relationship or order between these entities.

[0053] The principles and implementations of the present application are described in detail with specific examples in this paper, and the above examples are only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A heat dissipation system for an airborne antenna device, characterized in that, It includes a fairing (2) disposed on the skin and an antenna cover (4) that encloses the fairing (2) and the skin to form a closed space. The closed space is provided with a support tray (3) that conducts heat with the fairing (2). The antenna (1) is fixedly installed on the support tray (3) and conducts heat with the support tray (3). The leeward side of the fairing (2) is provided with an air inlet (21) and an air outlet (22). The antenna has a cooling fan (11) at one end facing the windward side of the fairing (2). The air inlet (21) corresponds to the side wall of the antenna (1) parallel to the heading. The air outlet (22) corresponds to the other end of the antenna (1) away from the cooling fan (11). The tray (3) is provided with heat dissipation fins (31), and the airflow from the air inlet (21) enters the enclosed space through the heat dissipation fins (31).

2. The airborne antenna equipment heat dissipation system according to claim 1, characterized in that, In the first state, the cooling fan (11) stops working, and the heat of the antenna (1) is transferred to the shroud (2) by the support tray (3). In the second state, the cooling fan (11) is started, and the airflow enters the enclosed space through the cooling fins (31), flows through the inside of the antenna (1), and is discharged through the air outlet (22); and / or, in the second state, the cooling fan (11) is started, and the airflow enters the enclosed space through the cooling fins (31), flows through the periphery of the antenna (1), and is discharged through the air outlet (22).

3. The airborne antenna equipment heat dissipation system according to claim 1, characterized in that, The number of air inlets (21) is one or more, the air inlets (21) are located at the end of the leeward side near the windward side, and the air outlets (22) are located in the middle of the leeward side.

4. The airborne antenna equipment heat dissipation system according to claim 1, characterized in that, The contact surface between the antenna (1) and the support tray (3) is provided with a heat-conducting medium.

5. The airborne antenna equipment heat dissipation system according to claim 1, characterized in that, The support tray (3) is integrated with the fairing (2).

6. The heat dissipation system for airborne antenna equipment according to claim 1, characterized in that, The support tray (3) and the fairing (2) are designed separately. The support tray (3) and the fairing (2) have a continuous contact surface. The contact surface between the support tray (3) and the fairing (2) is provided with a heat-conducting medium.

7. The airborne antenna equipment heat dissipation system according to claim 1, characterized in that, The heat dissipation fins (31) are also provided at one end of the support tray (3) corresponding to the heat dissipation fan (11), and the air duct formed by the heat dissipation fan (11) in the antenna (1) is parallel to the heading.

8. The airborne antenna equipment heat dissipation system according to claim 1, characterized in that, The air inlet (21) and the air outlet (22) are constructed as a grille structure.

9. The heat dissipation system for airborne antenna equipment according to claim 1, characterized in that, The outer wall of the fairing (2) is smoothly connected to the antenna cover (4).

10. The airborne antenna equipment heat dissipation system according to claim 1, characterized in that, The antenna (1) is detachably mounted on the support tray (3). The upper wall of the antenna (1) and the antenna cover (4) have a gap for air flow. The gap is connected to the air inlet (21) and the air outlet (22) through the enclosed space.

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