An air cooling device for radar environmental control

Abstract

The present invention relates to an air cooling device for radar environmental control, and relates to the field of air cooling devices. The heat exchanger core includes a plurality of fins and heat transfer tubes, each fin includes a fin body and a plurality of branches, the fin bodies of the plurality of fins are parallel to each other and arranged at intervals, one end of the branch is fixedly connected to the fin body, and the other end extends obliquely in the air inlet direction, and the plurality of branches are arranged at intervals along the length direction of the fin body and staggered on both sides of the fin body. The beneficial effect of the present invention is that the fin adopts a branch-like structure, preferably 3D printing is adopted, and the fin has a larger heat transfer area under the same heat exchanger core volume due to the branches, so that the heat exchange capacity of the heat exchanger core can be enhanced, and the structure can be more compact and lightweight. In addition, the branch-like structure can fully contact with the air, help the condensation of water in the air, thereby reducing the air dryness of the air outlet, which is beneficial to the working environment of the electronic equipment.

Description

Technical Field

[0001] The invention relates to the field of air cooling devices, and in particular to an air cooling device for radar environmental control. Background Art

[0002] When air cooling is used for electronic equipment in radar cabins and cabinets, the heat of the electronic equipment is dissipated into the air, and an air cooling device is required for secondary heat exchange to take away the internal heat, such as air conditioning, gas-liquid heat exchanger, etc.

[0003] The gas-liquid heat exchanger exchanges heat with the air through low-temperature coolant to achieve the purpose of reducing the temperature inside the shelter and cabinet. At present, the gas-liquid heat exchanger of the radar system generally uses antifreeze as the liquid cooling medium, and the heat exchanger fins are generally straight fins, corrugated fins, etc. The overall heat exchange effect is limited, and the space occupied is large under the same heat exchange effect. Optimizing the fin design of the heat exchanger and using high-efficiency heat transfer cooling medium are powerful ways to improve the heat exchange effect and increase the compactness of the heat exchanger. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to improve the heat exchange effect of the heat exchanger.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: an air cooling device for radar environmental control, including a heat exchanger core, the heat exchanger core including multiple fins and multiple heat transfer tubes, each of the fins including a fin body and multiple branches, the fin bodies of the multiple fins are parallel to each other and arranged at intervals, one end of the branch is fixedly connected to the fin body, and the other end extends obliquely toward the air inlet direction, the multiple branches are arranged at intervals along the length direction of the fin body and are staggered on both sides of the fin body, and the multiple heat transfer tubes pass through the multiple fins.

[0006] The beneficial effects of the present invention are as follows: the heat transfer tube is used for cooling medium to flow, and the low-temperature cooling medium exchanges heat with the air between the fins to cool the air. The fins adopt a branch-like structure, preferably formed by 3D printing. Since the fins are provided with branches, the fins have a larger heat transfer area under the same heat exchanger core volume, thereby enhancing the heat exchange capacity of the heat exchanger core and making the structure more compact and lightweight. In addition, the branch-like structure can fully contact with the air, helping the condensation of water in the air, thereby reducing the air dryness at the outlet, which is beneficial to the working environment of the electronic equipment.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the fin body is in a zigzag plate shape.

[0009] The beneficial effect of adopting the above further solution is: further increasing the path for air to move along the fins, thereby improving the heat exchange effect.

[0010] Furthermore, the branches between adjacent fins are arranged in a staggered manner.

[0011] The beneficial effect of adopting the above further solution is: while increasing the air heat exchange effect, it prevents the branches of adjacent fins from hindering the flow of air.

[0012] Furthermore, the plurality of heat transfer tubes are parallel to each other and arranged at intervals, and are perpendicular to the air inlet direction.

[0013] Furthermore, it also includes a box body, which has an air outlet and an air inlet, and the heat exchanger core is fixed in the box body and located between the air outlet and the air inlet.

[0014] The beneficial effect of adopting the above further solution is that air enters from the air inlet, passes through the heat exchanger core to cool down, and is discharged from the air outlet.

[0015] Furthermore, the box body is provided with a liquid inlet and a liquid outlet, and the heat exchanger core also includes a liquid distributor and a liquid collector, the liquid inlet is connected to the liquid distributor, the inlets of all the heat transfer tubes are connected to the liquid distributor, the outlets of all the heat transfer tubes are connected to the liquid collector, and the liquid collector is connected to the liquid outlet.

[0016] The beneficial effect of adopting the above further scheme is that the low-temperature cooling medium enters each liquid distribution tube from the liquid inlet through the liquid distribution tube, exchanges heat with the air between the fins, the cooling medium temperature increases, returns to the collecting tube, and finally flows out from the liquid outlet.

[0017] Furthermore, the air outlet and the air inlet are respectively arranged at two ends of the same side wall of the box body.

[0018] The beneficial effects of adopting the above further scheme are: the air flow route in the box is similar to a C shape, the box structure is compact, the air cooling device is easy to arrange, and compared with the scheme in which the air outlet and the air inlet are arranged on opposite side walls of the box, this scheme can extend the residence time of the air in the box and ensure the heat exchange effect.

[0019] Furthermore, the cooling medium in the heat transfer tube is supercritical carbon dioxide.

[0020] The beneficial effect of adopting the above further scheme is that the heat transfer tube uses supercritical carbon dioxide to undergo phase change when heated to increase the heat exchange efficiency. Carbon dioxide has a small liquid-vapor density ratio, good cooling stability, is non-flammable and non-explosive, non-toxic and non-corrosive, and is an ideal two-phase heat exchange medium. Using supercritical carbon dioxide as a cooling medium to dissipate heat from air can also enhance the heat exchange efficiency of the heat exchanger core and reduce the volume and weight of the heat exchanger core.

[0021] Furthermore, it also includes a fan assembly, which is fixedly connected to the box body and is located in the air outlet.

[0022] The beneficial effect of adopting the above further scheme is that the fan assembly provides driving force for the air, sucks the hot air in through the air inlet, and then passes through the fins and heat transfer tubes of the heat exchanger core to exchange heat with the low-temperature cooling medium in the heat transfer tube, thereby achieving the purpose of reducing the air temperature at the air outlet.

[0023] Furthermore, the fan assembly includes a plurality of fans, and the plurality of fans are arranged side by side.

[0024] The beneficial effect of adopting the above further solution is that during design, an appropriate number of fans can be selected according to the required air volume and air outlet size, and the adjustment flexibility is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of the structure of the air cooling device for radar environmental control of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the air cooling device for radar environmental control of the present invention;

[0027] Figure 3 It is a cross-sectional view of an air cooling device for radar environmental control of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the heat exchanger core of the present invention;

[0029] Figure 5 It is a schematic diagram of the fin structure of the present invention.

[0030] Figure 3 and Figure 5 The arrows in the diagram indicate the direction of air flow.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Rear cover; 2. Frame; 3. Air outlet; 4. Air inlet; 5. Liquid inlet; 6. Liquid outlet; 7. Liquid distribution pipe; 8. Liquid collecting pipe; 9. Heat exchanger core; 10. First fan; 11. Second fan; 12. Third fan; 13. Fin; 131. Fin body; 132 Branch; 14. Heat transfer tube. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] like Figures 1 to 5As shown, this embodiment provides an air cooling device for radar environmental control, including a heat exchanger core 9, the heat exchanger core 9 includes a plurality of fins 13 and a plurality of heat transfer tubes 14, each of the fins 13 includes a fin body 131 and a plurality of branches 132, the fin bodies 131 of the plurality of fins 13 are parallel to each other and arranged at intervals, one end of the branch 132 is fixedly connected to the fin body 131, and the other end extends obliquely toward the air inlet direction, the plurality of branches 132 are arranged at intervals along the length direction of the fin body 131 and are staggered on both sides of the fin body 131, and the plurality of heat transfer tubes 14 pass through the plurality of fins 13.

[0035] The heat transfer tube 14 is used for the cooling medium to flow, and the low-temperature cooling medium exchanges heat with the air between the fins 13 to cool the air. The fins 13 adopt a branch-like structure, preferably formed by 3D printing. Since the fins 13 are provided with branches 132, the fins 13 have a larger heat transfer area under the same volume of the heat exchanger core 9, thereby enhancing the heat exchange capacity of the heat exchanger core and making the structure more compact and lightweight. In addition, the branch-like structure allows the air to flow along the fin body 131. When a part of the air flows to the angle between the branch 132 and the fin body 131, a part of the air is blocked and fully contacts the branch 132 and the fin body 131, and then is blown out by the new air from the rear, and continues to flow forward with the other part of the air, thereby increasing the surface area of ​​the fin 13 and extending the contact time between the air and the fin 13. The fins 13 can also help condense water in the air. After the air containing water vapor collides with the fins 13 with a lower temperature, it condenses on the surface of the fins 13 and can fall along the fins 13, thereby reducing the dryness of the air at the air outlet, which is beneficial to the working environment of the electronic equipment.

[0036] Among them, Figure 5 As shown in the figure, the cross-sectional shape of the fin 13 is shown, that is, the trajectory formed by moving the cross-sectional shape in a straight line in a direction perpendicular to the cross-sectional shape is the outer contour of the fin 13 structure.

[0037] Among them, branch 132 can be as follows Figure 5 The cross section shown is a straight plate, or a plate with an arc-shaped, wavy or broken-line cross section.

[0038] The fin body 131 may be in the shape of a flat plate, a wavy plate, a broken line plate, or the like.

[0039] Based on any of the above solutions, preferably, the fin body 131 is in a zigzag plate shape.

[0040] The zigzag fin body 131 further increases the path for air to move along the fin 13. The air moves along the zigzag channel formed between the two fins 13. The air will be slightly blocked by the zigzag fin body 131 at the bend, causing the air to reverse direction and collide with the fin body 131 at the bend, thereby improving the heat exchange effect and also improving the dehumidification effect.

[0041] Based on any of the above solutions, the branches 132 between adjacent fins 13 are arranged in a staggered manner. Figure 5 As shown, along the channel between two adjacent fins 13, all branches 132 on opposite sides of the two adjacent fins 13 are arranged at intervals and staggered in sequence on both sides of the channel.

[0042] The air alternately enters the angle formed by the branches 132 of two adjacent fins 13 , thereby increasing the air heat exchange effect while preventing the branches 132 of the adjacent fins 13 from obstructing the flow of air.

[0043] Based on any of the above solutions, the plurality of heat transfer tubes 14 are arranged parallel to each other and at intervals, and are perpendicular to the air inlet direction.

[0044] On the basis of any of the above schemes, it further includes a box body, the box body has an air outlet 3 and an air inlet 4, and the heat exchanger core 9 is fixed in the box body and located between the air outlet 3 and the air inlet 4.

[0045] The air enters from the air inlet 4 , passes through the heat exchanger core 9 for heat exchange and cooling, and is then discharged from the air outlet 3 .

[0046] In one specific embodiment, the box body includes a rear cover plate 1 and a frame 2. The rear side of the frame 2 is open and closed by the rear cover plate 1 detachably connected thereto. The frame 2 has an air outlet 3 and an air inlet 4. The heat exchanger core 9 is fixed in the frame 2.

[0047] On the basis of any of the above schemes, each heat transfer tube 14 can be independently connected to the circulation pipeline of the cooling medium system, or, preferably, the box body is provided with a liquid inlet 5 and a liquid outlet 6, and the heat exchanger core 9 also includes a liquid distributor 7 and a liquid collector 8, the liquid inlet 5 is connected to the liquid distributor 7, the inlets of all the heat transfer tubes 14 are connected to the liquid distributor 7, the outlets of all the heat transfer tubes 14 are connected to the liquid collector 8, and the liquid collector 8 is connected to the liquid outlet 6.

[0048] The low-temperature cooling medium enters each liquid distributor 7 from the liquid inlet 5 through the liquid distributor 7, exchanges heat with the air between the fins 13, and the cooling medium temperature rises, returns to the liquid collector 8, and finally flows out from the liquid outlet 6. All heat transfer tubes 14 are connected to the circulation pipeline of the cooling medium system through the liquid inlet 5 and the liquid outlet 6.

[0049] On the basis of any of the above solutions, the air outlet 3 and the air inlet 4 are respectively arranged at two ends of the same side wall of the box body.

[0050] like Figures 1 to 3 As shown, the side wall of the box body provided with the air outlet 3 and the air inlet 4 is called the front side wall, and the side wall opposite to the front side wall is called the rear side wall, the heat exchanger core 9 is fixed inside the air inlet 4, and there is a space for air circulation between the heat exchanger core 9 and the rear side wall of the box body, and the air enters from the air inlet 4, passes through the heat exchanger core 9, moves along the rear side wall of the box body toward the air outlet 3, and then is discharged from the air outlet 3. As a result, the air flow route in the box body is similar to a C shape, the box body structure is compact, the air cooling device is convenient to arrange, and compared with the solution where the air outlet 3 and the air inlet 4 are set on the opposite side walls of the box body, this solution can prolong the air residence time in the box body and ensure the heat exchange effect.

[0051] Based on any of the above solutions, the cooling medium in the heat transfer tube 14 is supercritical carbon dioxide.

[0052] The heat transfer tube 14 increases the heat exchange efficiency by utilizing the phase change of supercritical carbon dioxide when heated. Carbon dioxide has a small liquid-vapor density ratio, good cooling stability, is non-flammable and non-explosive, non-toxic and non-corrosive, and is an ideal two-phase heat exchange medium. Using supercritical carbon dioxide as a cooling medium to dissipate heat from air can also enhance the heat exchange efficiency of the heat exchanger core 9 and reduce the volume and weight of the heat exchanger core 9.

[0053] On the basis of any of the above solutions, it also includes a fan assembly, which is fixedly connected to the box body and is located in the air outlet 3.

[0054] The fan assembly provides driving force for the air, sucking the hot air in through the air inlet 4, and then passing through the fins 13 of the heat exchanger core 9 and the heat transfer tube 14 to exchange heat with the low-temperature cooling medium in the heat transfer tube 14, thereby achieving the purpose of reducing the air temperature at the air outlet 3.

[0055] Based on any of the above solutions, the fan assembly includes multiple fans, and the multiple fans are arranged side by side.

[0056] During design, the appropriate number of fans can be selected according to the required air volume and the size of the air outlet 3, with high adjustment flexibility.

[0057] In one specific embodiment, Figure 2 As shown, the fan assembly includes a first fan 10, a second fan 11 and a third fan 12 which are arranged vertically side by side, and the fan assembly has a compact structure.

[0058] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air cooling device for radar environmental control, comprising a heat exchanger core (9), characterized in that: The heat exchanger core (9) comprises a plurality of fins (13) and a plurality of heat transfer tubes (14); each of the fins (13) comprises a fin body (131) and a plurality of branches (132); the fin bodies (131) of the plurality of fins (13) are parallel to each other and arranged at intervals; one end of the branch (132) is fixedly connected to the fin body (131), and the other end extends obliquely in the air inlet direction; the plurality of branches (132) are arranged at intervals along the length direction of the fin body (131) and are staggered on both sides of the fin body (131); the plurality of heat transfer tubes (14) pass through the plurality of fins (13); the fin body (131) is in the shape of a zigzag plate, and air moves along the zigzag channel formed between two fins (13).

2. The air cooling device for radar environment control according to claim 1, characterized in that: The branches (132) between adjacent fins (13) are arranged in a staggered manner.

3. The air cooling device for radar environment control according to claim 1, characterized in that: The plurality of heat transfer tubes (14) are arranged parallel to each other and at intervals, and are perpendicular to the air inlet direction.

4. An air cooling device for radar environmental control according to any one of claims 1 to 3, characterized in that: It also comprises a box body, the box body having an air outlet (3) and an air inlet (4), and the heat exchanger core (9) is fixed in the box body and located between the air outlet (3) and the air inlet (4).

5. The air cooling device for radar environment control according to claim 4, characterized in that: The box body is provided with a liquid inlet (5) and a liquid outlet (6), and the heat exchanger core (9) also includes a liquid distributor (7) and a liquid collector (8), the liquid inlet (5) is connected to the liquid distributor (7), the inlets of all the heat transfer tubes (14) are connected to the liquid distributor (7), the outlets of all the heat transfer tubes (14) are connected to the liquid collector (8), and the liquid collector (8) is connected to the liquid outlet (6).

6. The air cooling device for radar environment control according to claim 4, characterized in that: The air outlet (3) and the air inlet (4) are respectively arranged at two ends of the same side wall of the box body.

7. The air cooling device for radar environment control according to claim 3, characterized in that: The cooling medium in the heat transfer tube (14) is supercritical carbon dioxide.

8. The air cooling device for radar environment control according to claim 4, characterized in that: It also comprises a fan assembly, which is fixedly connected to the box body and is located in the air outlet (3).

9. The air cooling device for radar environment control according to claim 8, characterized in that: The fan assembly includes a plurality of fans, and the plurality of fans are arranged side by side.

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