Aluminum ammonia channel heat pipe, heat dissipation assembly and satellite
By setting support members at intervals along the outside of the tube main body in the aluminum ammonia channel heat pipe and filling low-density thermal conductivity components, the weight increase caused by redundant materials is solved, and an efficient thermal conductivity and lightweight design is achieved, which is suitable for satellite aerospace applications.
Patent Information
- Application Number
- CN202411624631.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2024-12-31
AI Technical Summary
In order to ensure structural strength and heat transfer capacity during the processing process, existing aluminum ammonia channel heat pipes usually retain more redundant materials outside the heat pipes, resulting in waste of materials and increased weight, affecting product convenience and production costs.
A support member is arranged along the outer side of the tube main body to connect the second heat conducting plate and the tube main body to form a gap, and fill the low-density filling member of the thermally conductive structure in the gap to reduce the weight of the heat pipe without affecting the thermal conductivity effect.
It effectively reduces the weight of the heat pipe, ensures the thermal conductivity, meets the satellite heat dissipation needs, reduces production costs, and improves the integrity and strength of the heat pipe.
Smart Images
Figure CN119223053A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of satellite thermal control technology, and in particular to an aluminum-ammonia channel heat pipe, a heat dissipation component and a satellite. Background Art
[0002] In the current existing technology, aluminum-ammonia groove heat pipes usually retain more material on the outside of the heat pipe during processing to ensure their structural strength and heat transfer capacity. However, although such a design improves the durability and heat transfer performance of the heat pipe, it also leads to material waste, especially increasing the thickness in some unnecessary areas. In fact, the demand for heat transfer capacity in actual applications is not as great as expected, and over-design has led to an increase in the overall weight of the heat pipe, which not only affects the convenience of product use, but also increases production costs. Summary of the invention
[0003] In view of this, the present application provides an aluminum-ammonia channel heat pipe, a heat dissipation component and a satellite, the purpose of which is to solve the above technical problems to a certain extent.
[0004] In a first aspect, the present application provides an aluminum-ammonia channel heat pipe, the aluminum-ammonia channel heat pipe comprising:
[0005] A pipe body having an axial direction;
[0006] A first heat conducting plate, the first heat conducting plate is connected to the outer side of the tube body, and the first heat conducting plate is used to fit a heating device in the satellite;
[0007] A second heat conducting plate, the second heat conducting plate and the first heat conducting plate are opposite to each other, and the second heat conducting plate is used to fit a cold source;
[0008] Among them, the aluminum-ammonia channel heat pipe also includes a plurality of supporting members, which connect the second heat conduction plate and the outer side of the pipe body. The plurality of supporting members are arranged at intervals along the outer side of the pipe body to form gaps between adjacent supporting members.
[0009] On the basis of the above technical solution, preferably, the tube body, the first heat conducting plate, the second heat conducting plate and the plurality of supporting members are an integrally formed structure, wherein the number of the supporting members is two.
[0010] Based on any of the above technical solutions, preferably, when viewed along the axial direction, an extension direction of the support member is perpendicular to the axial direction.
[0011] Based on any of the above technical solutions, preferably, when viewed along the axial direction, the shape of the gap is a rectangle.
[0012] Based on any of the above technical solutions, preferably, a size of the supporting member in the axial direction is the same as a size of the second heat conducting plate in the axial direction.
[0013] Based on any of the above technical solutions, preferably, the support member extends continuously in the axial direction, or the support member includes a plurality of support portions spaced apart in the axial direction.
[0014] Based on any of the above technical solutions, preferably, the aluminum-ammonia channel heat pipe also includes a filling component, the filling component is filled in the gap, the filling component is configured as a heat-conducting structure, and the density of the filling component is less than the density of the pipe body, the density of the supporting member and any one of the density of the second heat-conducting plate.
[0015] In a second aspect, the present application provides a heat dissipation component, which includes the aluminum-ammonia channel heat pipe as described above.
[0016] In a third aspect, the present application provides a satellite, wherein the satellite includes the aluminum-ammonia channel heat pipe as described above and / or the satellite includes the heat dissipation assembly as described above.
[0017] Based on any of the above technical solutions, preferably, the cold source includes a cabin of the satellite, and the cabin separates the internal space of the satellite from the external space of the satellite.
[0018] According to the aluminum-ammonia groove heat pipe provided in the present application, compared with the prior art, redundant solid materials are no longer used to connect the second heat conducting plate and the tube body. Instead, support members arranged at intervals along the outer side of the tube body are used to connect the second heat conducting plate and the tube body, thereby forming a gap between adjacent support members.
[0019] According to the aluminum-ammonia groove heat pipe provided by the present application, the formation of the above gap can effectively reduce the weight of the aluminum-ammonia groove heat pipe provided by the present application, and in actual application, the formation of the gap does not substantially affect the heat conduction effect between the second heat conduction plate and the pipe body. Therefore, compared with the prior art, while ensuring the heat conduction effect, the aluminum-ammonia groove heat pipe provided according to the embodiment of the present application achieves effective weight reduction.
[0020] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic diagram showing an example of an aluminum-ammonia channel heat pipe provided according to an embodiment of the present application;
[0023] Figure 2 A schematic diagram showing another example of an aluminum-ammonia channel heat pipe provided according to an embodiment of the present application;
[0024] Figure 3 A schematic diagram showing another example of an aluminum-ammonia channel heat pipe provided according to an embodiment of the present application is shown.
[0025] Reference numerals:
[0026] 10 - pipe body; 20 - first heat conducting plate; 30 - second heat conducting plate; 40 - supporting member; 50 - gap. DETAILED DESCRIPTION
[0027] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.
[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0029] In the description of this application, 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 this application can be understood according to specific circumstances.
[0030] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0031] According to a first aspect of an embodiment of the present application, an aluminum-ammonia slot heat pipe is provided. The structure and working principle of the aluminum-ammonia slot heat pipe will be described in detail below with reference to the accompanying drawings.
[0032] According to the aluminum-ammonia channel heat pipe provided in the embodiment of the present application, the aluminum-ammonia channel heat pipe includes a pipe body 10, a first heat conducting plate 20, a second heat conducting plate 30, and a plurality of supporting members 40. In the embodiment, the pipe body 10 has an axial direction, the first heat conducting plate 20 is connected to the outer side of the pipe body 10, the first heat conducting plate 20 is used to fit the heating device in the satellite, the second heat conducting plate 30 is opposite to the first heat conducting plate 20, and the second heat conducting plate 30 is used to fit the cold source.
[0033] In the embodiment, the support members 40 connect the second heat conducting plate 30 and the outer side of the pipe body 10 , and the plurality of support members 40 are disposed at intervals along the outer side of the pipe body 10 to form gaps 50 between adjacent support members 40 .
[0034] In this way, the aluminum-ammonia groove heat pipe provided according to the embodiment of the present application, compared with the prior art, no longer uses redundant solid materials to connect the second heat conducting plate 30 and the pipe body 10, but instead uses support members 40 arranged at intervals along the outer side of the pipe body 10 to connect the second heat conducting plate 30 and the pipe body 10, thereby forming a gap 50 between adjacent support members 40.
[0035] According to the aluminum-ammonia groove heat pipe provided in the embodiment of the present application, the formation of the above gap 50 can effectively reduce the weight of the aluminum-ammonia groove heat pipe provided in the embodiment of the present application, and in actual application, the formation of the gap 50 does not substantially affect the heat conduction effect between the second heat conduction plate 30 and the pipe body 10. Therefore, compared with the prior art, while ensuring the heat conduction effect, the aluminum-ammonia groove heat pipe provided in the embodiment of the present application achieves effective weight reduction.
[0036] In the embodiment, as mentioned in the above description, before the present application is proposed, a solid redundant material is usually provided between the second heat conducting plate 30 and the outer side of the pipe body 10 as in the prior art, and this design is expected to achieve the effect of ensuring the connection strength between the second heat conducting plate 30 and the pipe body 10 and the heat conduction effect between the second heat conducting plate 30 and the pipe body 10. However, the inventors of the present application found that the heat conduction effect between the second heat conducting plate 30 and the pipe body 10 does not show a completely positive correlation with the amount of the connecting material between the two. In fact, most of the redundant materials do not play an effective role in heat conduction, and the strength they can provide is also quite limited.
[0037] However, due to the particularity of the application environment of the aluminum-ammonia slot heat pipe, the improvement of the structure of the aluminum-ammonia slot heat pipe always tends to meet its reliability requirements, which leads to a design method that over-meets the reliability requirements. In other words, due to the use of aluminum-ammonia slot heat pipes in satellites, once they fail, they cannot be maintained in time, so their reliability is given priority, and even over-considered, resulting in the emergence of physical redundant materials in the prior art.
[0038] Based on this, the inventor of the present application changed the improvement ideas and optimized the structure of the aluminum-ammonia groove heat pipe so that it has the characteristics of lightweight while having sufficient reliability. By utilizing this lightweight feature, when the satellite used by the aluminum-ammonia groove heat pipe is transported into space by a ship-borne rocket, the transportation requirements are effectively reduced.
[0039] According to the aluminum-ammonia groove heat pipe provided in the embodiment of the present application, the pipe body 10, the first heat conducting plate 20, the second heat conducting plate 30 and the plurality of support members 40 are an integrally formed structure, wherein the number of the support members 40 is two.
[0040] In an embodiment, the aluminum-ammonia slot heat pipe is formed of an aluminum alloy. In an embodiment, the pipe body 10, the first heat conducting plate 20, the second heat conducting plate 30 and the plurality of supporting members 40 are an integrally formed structure, so as to increase the integrity and strength of the aluminum-ammonia slot heat pipe provided according to an embodiment of the present application, while also being able to improve the thermal conductivity efficiency between the various parts of the aluminum-ammonia slot heat pipe provided according to an embodiment of the present application.
[0041] As an example, in an embodiment, the aluminum-ammonia channel heat pipe can be extruded integrally in a preset mold by, for example, an aluminum extrusion process. Therefore, in order to meet the feasibility of the processing technology of extruding integrally in a preset mold, the number of the support members 40 can be two (more support members 40 will make the mold difficult to manufacture). Specifically, the support member 40 presents a rectangular plate-like structure in actual structure.
[0042] According to the aluminum-ammonia channel heat pipe provided in the embodiment of the present application, when viewed along the axial direction, the extension direction of the support member 40 is perpendicular to the axial direction. In the embodiment, according to the aluminum-ammonia channel heat pipe provided in the embodiment of the present application, the support member 40 extends from the outer side of the pipe body 10 to the second guide portion in an extension direction perpendicular to the axial direction, thereby, the heat transfer path from the outer side of the pipe body 10 to the second heat conducting plate 30 through the support member 40 is shorter, and the heat transfer capacity of the support member 40 can be improved.
[0043] However, in other examples not shown, the support member 40 may also be inclined relative to the direction perpendicular to the axial direction, so that the gap 50 is trapezoidal or substantially trapezoidal. Alternatively, when viewed along the axial direction, even the ends of adjacent support members 40 are connected together, so that the gap 50 is triangular or substantially triangular.
[0044] In the embodiment, as an example, according to the aluminum-ammonia channel heat pipe provided in the embodiment of the present application, when viewed along the axial direction, the shape of the gap 50 is a rectangle.
[0045] According to the aluminum-ammonia slot heat pipe provided in the embodiment of the present application, the axial size of the support member 40 is the same as the axial size of the second heat conduction plate 30. Thus, according to the aluminum-ammonia slot heat pipe provided in the embodiment of the present application, the support member 40 can fully support the second heat conduction plate 30 along the axial direction and fully conduct heat.
[0046] According to the aluminum-ammonia channel heat pipe provided in the embodiment of the present application, the support member 40 extends continuously in the axial direction. Similar to the beneficial effects mentioned in the above description, this continuous extension method can also fully support the second heat conducting plate 30 along the axial direction and fully conduct heat. As an alternative, the support member 40 includes a plurality of support portions spaced apart in the axial direction, and these support portions can be relatively short rectangular plate structures. The spaced support portions make the material of the support member 40 less, thereby achieving further weight reduction.
[0047] According to the aluminum-ammonia groove heat pipe provided in the embodiment of the present application, the aluminum-ammonia groove heat pipe further includes a filling member, which is filled in the gap 50, and the filling member is configured as a heat-conducting structure, and the density of the filling member is less than the density of the pipe body 10, the density of the support member 40, and the density of the second heat-conducting plate 30. In the embodiment, the gap 50 is filled with a filling member with a lower density, and the thermal conductivity is further improved while achieving weight reduction. However, as an alternative, in other examples, such as the present application Figures 1 to 3 In the example of FIG. 5 , no filling member is provided in the gap 50 .
[0048] In an embodiment, a plurality of grooves may be provided along the axial direction on the inner side of the pipe body 10 to increase the contact area with the medium flowing inside the pipe body 10 . The shapes of the grooves may be, for example, rectangular grooves, trapezoidal grooves or ω-shaped grooves.
[0049] The aluminum-ammonia slot heat pipe provided according to the embodiment of the present application is mainly used in the aerospace field, has high reliability and stability, and can work normally in extreme space environments. The aluminum-ammonia slot heat pipe provided according to the embodiment of the present application provides effective heat dissipation for single-machine equipment inside the satellite, ensuring that various precision instruments maintain a stable operating temperature under conditions of high vacuum, drastic temperature differences and no air flow. Through the efficient thermal conductivity of the heat pipe, the excess heat generated by the equipment can be quickly transferred to the outside of the satellite to avoid local overheating and improve the overall operating efficiency and service life of the satellite. In addition, the slot heat pipe is also light in weight and compact in structure, which is suitable for the stringent design requirements of spacecraft.
[0050] In addition, the inventors of the present application realized that the heat transfer capacity of the heat pipe in aerospace equipment such as satellites does not need to be too strong. Therefore, under the premise of ensuring that the heat pipe has sufficient heat transfer capacity, the focus is on how to further reduce the weight of the heat pipe. Based on this goal, opening schemes of different shapes are compared, including triangles, circles, rectangles and other irregular shapes. In the embodiment, the rectangular openings not only perform best in weight reduction, but also maintain the strength and heat transfer performance of the heat pipe. This design greatly reduces the weight of the heat pipe while meeting the structural safety and heat dissipation requirements, and has significant practical value.
[0051] Regarding the design of mechanical strength, 6063 aluminum alloy material, which is commonly used in aluminum-ammonia groove heat pipes, was selected. This material has good lightweight properties while meeting the strength requirements.
[0052] When considering the shape of the openings, there are trapezoidal holes and triangular holes for the same two support members 40. Although these two designs can increase the thickness of the support member 40, thereby increasing the strength, they also inevitably lead to an increase in the weight of the heat pipe, affecting the lightweight design. The two support columns brought about by the rectangular opening design have a standardized shape, which can well meet the mechanical strength requirements and effectively control the weight. At the same time, the rectangular opening makes the heat transfer path shorter, further improving the heat transfer capacity. In addition, this opening method also simplifies the processing technology, reduces the manufacturing difficulty, and improves the production feasibility.
[0053] In the embodiment, the section of the heat pipe without the rectangular hole is specifically used to fit closely to the heat source surface inside the satellite to absorb the heat generated by the electronic unit to the maximum extent; while the side with the hole is used to fit to the cold source surface to effectively transfer the heat. The heat transfer path starts from the heating components of the electronic unit inside the satellite, and the heat is transferred to the cabin through the heat pipe. The exterior of the cabin is coated with a white coating to enhance the heat radiation capacity, and finally the heat is radiated to outer space.
[0054] After detailed heat transfer calculation and experimental verification, the results show that the heat transfer capacity of the entire heat dissipation process can fully meet the working requirements of the satellite. Regarding the rectangular hole part, although the thermal conductivity of the opening area is slightly worse than that of the solid part, due to its close proximity to the cold source surface, the actual effect on heat transfer is very weak. The observable effect is that the time of the heat dissipation process is slightly increased. However, compared with the significant weight reduction effect brought by the rectangular hole design, this slight extension of the heat transfer time can be ignored. Therefore, considering the weight and heat transfer efficiency, the design scheme of opening the hole to form a gap 50 is very reasonable and effective.
[0055] According to a second aspect of an embodiment of the present application, a heat dissipation component is provided, and the heat dissipation component may include the above aluminum-ammonia groove heat pipe.
[0056] According to a third aspect of an embodiment of the present application, a satellite is provided, the satellite comprising the above aluminum-ammonia channel heat pipe and / or the satellite comprising the above heat dissipation assembly. In an embodiment, the cold source comprises a cabin of the satellite, the cabin separating the interior space of the satellite from the exterior space of the satellite.
[0057] The above are only preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. All equivalent structural changes made by using the contents of the present application specification and drawings under the innovative concept of the present application, or directly / indirectly applied in other related technical fields are included in the protection scope of the present application.
Claims
1. An aluminum-ammonia channel heat pipe, characterized in that: The aluminum-ammonia channel heat pipe comprises: A pipe body having an axial direction; A first heat conducting plate, the first heat conducting plate is connected to the outer side of the tube body, and the first heat conducting plate is used to fit a heating device in the satellite; A second heat conducting plate, the second heat conducting plate and the first heat conducting plate are opposite to each other, and the second heat conducting plate is used to fit a cold source; Among them, the aluminum-ammonia channel heat pipe also includes a plurality of supporting members, which connect the second heat conduction plate and the outer side of the pipe body. The plurality of supporting members are arranged at intervals along the outer side of the pipe body to form gaps between adjacent supporting members.
2. The aluminum-ammonia channel heat pipe according to claim 1, characterized in that: The tube body, the first heat conducting plate, the second heat conducting plate, and the plurality of supporting members are an integrally formed structure, wherein the number of the supporting members is two.
3. The aluminum-ammonia channel heat pipe according to claim 2, characterized in that: When viewed along the axial direction, the extending direction of the support member is perpendicular to the axial direction.
4. The aluminum-ammonia channel special pipe according to claim 3 is characterized in that: When viewed along the axial direction, the gap has a rectangular shape.
5. The aluminum-ammonia channel heat pipe according to claim 1, characterized in that: A dimension of the supporting member in the axial direction is the same as a dimension of the second heat conducting plate in the axial direction.
6. The aluminum-ammonia channel heat pipe according to claim 1, characterized in that: The support member extends continuously in the axial direction, or the support member includes a plurality of support portions spaced apart in the axial direction.
7. The aluminum-ammonia channel heat pipe according to claim 1, characterized in that: The aluminum-ammonia channel heat pipe also includes a filling component, which is filled in the gap and is configured as a heat-conducting structure. The density of the filling component is less than any one of the density of the pipe body, the density of the supporting component and the density of the second heat-conducting plate.
8. A heat dissipation component, characterized in that: The heat dissipation assembly includes an aluminum-ammonia channel heat pipe as described in any one of claims 1 to 7.
9. A satellite, characterized in that: The satellite comprises the aluminum-ammonia channel heat pipe according to any one of claims 1 to 7 and / or the satellite comprises the heat dissipation assembly according to claim 8.
10. The satellite according to claim 9, characterized in that The cold source includes a cabin of the satellite, and the cabin separates an internal space of the satellite and an external space of the satellite.