Composite structure temperature control structure and temperature control method

Abstract

This invention discloses a temperature control structure and method for composite material structural components, relating to the field of composite material heat dissipation technology. It includes an inner metal structural component, an outer metal structural component, a heat-conducting column, and a heat exchange tube. The inner metal structural component is disposed on the outer side wall or at an angle of the inner structure. A composite material layer is disposed on the outer side of the inner metal structural component. The outer metal structural component is disposed on the outer side wall or at an angle of the composite material layer. The heat-conducting column penetrates the composite material layer and connects to the inner and outer metal structural components. The heat exchange tube is integrated within the outer metal structural component. By using the heat-conducting column and heat exchange tube, the limitation of thermal insulation in composite materials is overcome, achieving efficient heat conduction and even distribution from the inside to the outside.

Description

Technical Field

[0001] This invention relates to the field of composite material heat dissipation technology, and in particular to a temperature control structure and temperature control method for composite material structural components. Background Technology

[0002] Composite materials, with their excellent properties such as lightweight and high strength, have been widely used in many fields, including aerospace, automotive manufacturing, and electronic equipment. However, the poor thermal conductivity of composite materials makes them prone to thermal insulation during practical use. When the external ambient temperature changes, especially when it rises, external heat dissipation measures such as air cooling and water cooling have negligible impact on the internal temperature of composite structural components. This leads to a significant temperature difference between the inside and outside of the composite structural component, resulting in uneven temperature distribution. This uneven temperature distribution can further cause thermal deformation of the structure. Summary of the Invention

[0003] The purpose of this invention is to provide a temperature control structure and method for composite material structural components to solve the above-mentioned technical problems.

[0004] The technical solution adopted in this invention is as follows: A temperature control structure for a composite material structure includes an inner metal structure, an outer metal structure, a heat-conducting column, and a heat exchange tube. The inner metal structure is disposed on the outer side wall or at an angle of the inner structure. A composite material layer is disposed on the outer side of the inner metal structure. The outer metal structure is disposed on the outer side wall or at an angle of the composite material layer. The heat-conducting column penetrates the composite material layer and is connected to the inner metal structure and the outer metal structure. The heat exchange tube is integrated within the outer metal structure.

[0005] Preferably, the heat exchange tube includes a heat pipe and a cold pipe, the cold pipe is disposed close to the heat source, and the cold pipe is connected to the heat pipe by a flexible hose.

[0006] Preferably, one end of the heat-conducting column is connected to the inner wall of the outer metal structure, and the other end of the heat-conducting column is connected to the outer wall of the inner metal structure.

[0007] Preferably, one end of the heat-conducting pillar is connected to the inner wall of the outer metal structure, and the other end of the heat-conducting pillar penetrates through the inner metal structure.

[0008] As a further preferred embodiment, a heat-conducting groove is formed on the inner wall of the inner metal structure, the heat-conducting groove is filled with heat-conducting adhesive, and the other end of the heat-conducting column is disposed in the heat-conducting groove.

[0009] As a further preferred embodiment, the interior of the heat-conducting column is hollow, and the interior of the heat-conducting column is filled with a heat-conducting body made of shape memory alloy and high thermal conductivity ceramic composite.

[0010] As a further preferred embodiment, the inner wall of the outer metal structure is provided with a first conductive electromagnetic shielding coating, and the outer wall of the inner metal structure is provided with a second conductive electromagnetic shielding coating.

[0011] As a further preferred embodiment, the device also includes a conductive core, which is disposed inside the heat-conducting column. One end of the conductive core is connected to the first conductive electromagnetic shielding coating, and the other end of the conductive core passes through the heat-conducting column and is connected to the second conductive electromagnetic shielding coating.

[0012] As a further preferred embodiment, the interior of the heat-conducting column is hollow and filled with a low-melting-point metal with reversible phase transformation.

[0013] A method for temperature control of composite material structural components, comprising a temperature control structure for composite material structural components, wherein the control method includes: S1. Refrigerant is injected into the heat pipe and cold pipe respectively through a water chiller; the refrigerant in the cold pipe exchanges heat with the heat source, carrying away some of the heat from the heat source before entering the heat pipe, while the refrigerant in the heat pipe enters the cold pipe after flowing a certain distance. Then the refrigerant in the cold pipe and the heat pipe will flow alternately to achieve thermal balance and ensure consistent temperature throughout the entire process, avoiding a situation where the temperature at the inlet end of the cold pipe is low and the temperature at the outlet end is high. S2. When the temperature of the heat source exceeds the threshold, the low-melting-point metal in the heat-conducting column will dissolve into a liquid state, increasing the heat transfer efficiency. When the temperature of the heat source is below the threshold, the low-melting-point metal is solid.

[0014] The above technical solution has the following advantages or beneficial effects: (1) In this invention, by setting up heat-conducting columns and heat exchange tubes, the limitation of thermal insulation of composite materials is overcome, and efficient heat conduction and balanced distribution from the inside to the outside are achieved.

[0015] (2) In this invention, the heat conduction efficiency is automatically adjusted according to the temperature by the heat conductor, which can quickly enhance the heat dissipation capacity under high temperature conditions, and ensure that the composite material structural parts can dissipate heat in a timely manner under various working conditions, so as to meet the heat dissipation needs of different working environments.

[0016] (3) In this invention, the addition of a conductive electromagnetic shielding coating and a conductive core to the temperature control structure not only solves the temperature control problem, but also significantly enhances the electromagnetic shielding performance of the composite material structure, which can effectively prevent external electromagnetic leakage.

[0017] (4) In this invention, by setting a low melting point metal or heat conductor inside the heat-conducting column, the state of the column can be adjusted according to the change of the heat source temperature, thereby changing the heat conduction efficiency and reasonably controlling the internal and external temperatures to be consistent. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the temperature control structure of the composite material structural component in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of the inner metal structural component when it is applied at the included angle position of the internal structure in Embodiment 2 of the present invention; Figure 3 This is a schematic diagram of the structure when the inner metal structural component is applied to the side wall of the internal structure in Embodiment 2 of the present invention; Figure 2 and Figure 3 The internal metal structural components, external metal structural components, heat-conducting pillars, heat pipes, cold pipes, internal structures, composite material layers, and other structures are related to... Figure 1 The same as in [the previous sentence].

[0019] In the diagram: 1. Inner metal structural component; 2. Outer metal structural component; 3. Heat-conducting column; 4. Heat pipe; 5. Cold pipe; 6. Heat-conducting groove; 7. Heat-conducting adhesive; 8. Heat conductor; 9. Conductive core; 10. Internal structure; 11. Composite material layer. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Example 1 See Figure 1 As shown, a temperature control structure for a composite material structure includes an inner metal structure 1, an outer metal structure 2, a heat-conducting column 3, and a heat exchange tube. The inner metal structure 1 is located on the outer wall or at an angle of the inner structure 10. A composite material layer 11 is provided on the outer side of the inner metal structure 1. The outer metal structure 2 is located on the outer wall or at an angle of the composite material layer 11. The heat-conducting column 3 penetrates the composite material layer 11 and connects to the inner metal structure 1 and the outer metal structure 2. The heat exchange tube is integrated within the outer metal structure 2. In this embodiment, both the inner metal structure 1 and the outer metal structure 2 have thermal conductivity. The inner metal structure 1 directly conducts the heat generated by the inner structure 10 to the heat-conducting column 3, and the heat is then conducted away by the refrigerant in the outer metal structure 2 and the heat exchange tube. This structure overcomes the limitations of thermal insulation in composite materials, achieving effective heat conduction from the inside to the outside and ensuring consistent internal and external temperatures.

[0024] The heat exchanger includes a heat pipe 4 and a cold pipe 5. The cold pipe 5 is positioned close to the heat source, and the cold pipe 5 and the heat pipe 4 are connected by a flexible hose. One end of the heat-conducting column 3 is connected to the inner wall of the outer metal structure 2, and the other end of the heat-conducting column 3 is connected to the outer wall of the inner metal structure 1. In this embodiment, the heat-conducting column 3 penetrates the composite material layer 11 and can serve as a channel for heat conduction. When heat is conducted to the outer metal structure 2, because the cold pipe 5 is closer to the heat source, it carries away some heat and flows into the heat pipe 4. Since the heat pipe 4 and the cold pipe 5 are connected, the refrigerant in the heat pipe 4 will also flow for a distance before flowing back into the cold pipe 5. The two are in thermal equilibrium during the total stroke, which prevents the temperature on the inflow side of the cold pipe 5 from being much lower than the outflow side or the temperature on the cold pipe 5 from being much lower than the temperature on the heat pipe 4, thus preventing a chaotic temperature field in the structure.

[0025] Example 2 See Figure 1-3As shown, based on Embodiment 1, Embodiment 2 further discloses that one end of the heat-conducting column 3 is connected to the inner wall of the outer metal structure 2, and the other end of the heat-conducting column 3 penetrates through the inner metal structure 1. A heat-conducting groove 6 is formed on the inner wall of the inner metal structure 1, and the heat-conducting groove 6 is filled with heat-conducting adhesive 7. The other end of the heat-conducting column 3 is disposed within the heat-conducting groove 6. By setting the heat-conducting groove 6 and the heat-conducting adhesive 7, and inserting the other end of the heat-conducting column 3 into the heat-conducting adhesive 7, the heat conduction effect can be further enhanced.

[0026] Furthermore, as a preferred embodiment, the heat-conducting column 3 is hollow inside, and its interior is filled with a heat-conducting body 8 made of a composite of shape memory alloy and high thermal conductivity ceramic. When the temperature exceeds a preset threshold, the heat-conducting body 8 expands and deforms, completely filling the interior of the heat-conducting column 3, and conducts heat simultaneously with the heat-conducting column 3. In this way, when the heat pipe 4 cannot dissipate heat in time, the heat-conducting body 8 absorbs heat and undergoes a phase change, which can achieve instantaneous heat storage and avoid the problem of deformation of the internal structure 10 caused by a sudden increase in local temperature. When the temperature is below the preset threshold, the heat-conducting body 8 will contract, and at this time the heat-conducting body 8 will no longer be in contact with the outer metal structure 2.

[0027] In another embodiment, the interior of the heat-conducting pillar is hollow and filled with a low-melting-point metal with reversible phase change. The state of the low-melting-point metal changes with temperature; for example, it melts into a liquid state when the temperature is above a preset threshold, thus improving thermal conductivity, and it remains liquid when the temperature is below the preset threshold. This allows for adjustment of thermal conductivity based on temperature variations.

[0028] Furthermore, as a preferred embodiment, a first conductive electromagnetic shielding coating is provided on the inner wall of the outer metal structural component 2, and a second conductive electromagnetic shielding coating is provided on the outer wall of the inner metal structural component 1. A conductive core 9 is provided inside the heat-conducting column 3, one end of which is connected to the first conductive electromagnetic shielding coating, and the other end of which passes through the heat-conducting column 3 and is connected to the second conductive electromagnetic shielding coating. Through the arrangement of the first conductive electromagnetic shielding coating, the second conductive electromagnetic shielding coating, and the conductive core 9, an electromagnetic shielding circuit can be formed, which can enhance the electromagnetic shielding performance of the composite material structural component and prevent the leakage of electromagnetic radiation generated by the internal structure 10 (such as electronic components).

[0029] Based on the above embodiment 2, the present invention also discloses a temperature control method for composite material structural components, the control method comprising: S1. Refrigerant is injected into heat pipe 4 and cold pipe 5 respectively through a water chiller. The refrigerant in cold pipe 5 exchanges heat with the heat source, carrying away some of the heat from the heat source before entering heat pipe 4. The refrigerant in heat pipe 4 flows a certain distance before entering cold pipe 5. Then, the refrigerant in cold pipe 5 and heat pipe 4 flow alternately to achieve thermal balance and ensure consistent temperature throughout the entire process, avoiding a situation where the inlet temperature of cold pipe 5 is low and the outlet temperature is high. When the temperature of the heat source exceeds the threshold, the low melting point metal in the heat-conducting column 3 will dissolve into a liquid state, increasing the heat transfer efficiency. When the temperature of the heat source is below the threshold, the low melting point metal remains solid.

[0030] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A temperature control structure for a composite material structural component, characterized in that, It includes an inner metal structural component, an outer metal structural component, a heat-conducting column, and a heat exchange tube. The inner metal structural component is located on the outer side wall or at an angle of the inner structure. A composite material layer is provided on the outer side of the inner metal structural component. The outer metal structural component is located on the outer side wall or at an angle of the composite material layer. The heat-conducting column penetrates the composite material layer and is connected to the inner metal structural component and the outer metal structural component. The heat exchange tube is integrated inside the outer metal structural component.

2. The temperature control structure for composite material structural components as described in claim 1, characterized in that, The heat exchange tube includes a heat pipe and a cold pipe, with the cold pipe positioned close to the heat source and connected to the heat pipe via a flexible hose.

3. The temperature control structure for composite material structural components as described in claim 1, characterized in that, One end of the heat-conducting column is connected to the inner wall of the outer metal structure, and the other end of the heat-conducting column is connected to the outer wall of the inner metal structure.

4. The temperature control structure for composite material structural components as described in claim 1, characterized in that, One end of the heat-conducting column is connected to the inner wall of the outer metal structure, and the other end of the heat-conducting column penetrates the inner metal structure.

5. The temperature control structure for composite material structural components as described in claim 4, characterized in that, A heat-conducting groove is formed on the inner wall of the inner metal structure, and the heat-conducting groove is filled with heat-conducting adhesive. The other end of the heat-conducting column is disposed in the heat-conducting groove.

6. The temperature control structure for composite material structural components as described in claim 4, characterized in that, The interior of the heat-conducting column is hollow and filled with a heat-conducting material made of shape memory alloy and high thermal conductivity ceramic composite.

7. The temperature control structure for composite material structural components as described in claim 6, characterized in that, The inner wall of the outer metal structure is provided with a first conductive electromagnetic shielding coating, and the outer wall of the inner metal structure is provided with a second conductive electromagnetic shielding coating.

8. The temperature control structure for composite material structural components as described in claim 7, characterized in that, It also includes a conductive core, which is disposed inside the heat-conducting column. One end of the conductive core is connected to the first conductive electromagnetic shielding coating, and the other end of the conductive core passes through the heat-conducting column and is connected to the second conductive electromagnetic shielding coating.

9. The temperature control structure for composite material structural components as described in claim 4, characterized in that, The interior of the heat-conducting column is hollow and filled with a low-melting-point metal with reversible phase transformation.

10. A method for temperature control of composite material structural components, comprising the temperature control structure for composite material structural components as described in claim 9, characterized in that, The control method includes: S1. Refrigerant is injected into the heat pipe and cold pipe respectively through a water chiller; the refrigerant in the cold pipe exchanges heat with the heat source, carrying away some of the heat from the heat source before entering the heat pipe, while the refrigerant in the heat pipe enters the cold pipe after flowing a certain distance. Then the refrigerant in the cold pipe and the heat pipe will flow alternately to achieve thermal balance and ensure consistent temperature throughout the entire process, avoiding a situation where the temperature at the inlet end of the cold pipe is low and the temperature at the outlet end is high. S2. When the temperature of the heat source exceeds the threshold, the low-melting-point metal in the heat-conducting column will dissolve into a liquid state, increasing the heat transfer efficiency. When the temperature of the heat source is below the threshold, the low-melting-point metal is solid.

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