3D uniform temperature plate with capillary lap joint structure
By designing capillary overlap structure columns and flow channels, surface-to-surface contact between the heat pipe and the flat plate is achieved, solving the problem of unstable overlap between the heat pipe and the flat plate in existing 3D vapor chambers, and improving stability and heat transfer efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN FRD SCI & TECH
- Filing Date
- 2025-03-28
- Publication Date
- 2026-05-29
AI Technical Summary
In existing 3D vapor chambers, the capillary overlap stability between the heat pipe and the flat plate is poor, mainly due to the unstable contact between the line and the surface caused by the cut of the heat pipe nozzle.
The system employs a capillary overlap structure column and a heat pipe plug-in connection, combined with a flow guide groove design, to achieve face-to-face contact between the heat pipe and the capillary structure layer, avoiding heat pipe end cutting operations and enhancing stability.
It improves the stability of the overlap between the heat pipe and the flat plate, ensures smooth airflow exchange, reduces maintenance complexity, and improves heat transfer efficiency.
Smart Images
Figure CN224302852U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of temperature equalization plate technology, and in particular to a 3D temperature equalization plate with a capillary overlap structure. Background Technology
[0002] A 3D vapor chamber is a type of vapor chamber that uses a flat vapor chamber to connect heat pipes and allows their internal cavities to be connected. The capillary connection between the heat pipes and the flat plate directly affects the performance of the product.
[0003] like Figure 2 As shown, the current connection between the heat pipe 100 and the flat plate (including the upper shell 200 and the lower shell 300) is mainly a line-to-surface connection. This is primarily manifested in the following: to ensure airflow interaction between the heat pipe 100 and the inner cavity of the flat plate after insertion, a portion of material needs to be removed from the opening of the heat pipe 100 to form a cut 101 (e.g., ...). Figure 1 As shown), the heat pipe is designed to allow steam to flow. However, the cut at the end of the heat pipe reduces the area of capillary overlap between the heat pipe and the flat plate, making the capillary overlap between the heat pipe and the flat plate a line-to-surface contact. The reliability of the line-to-surface connection is low, resulting in poor overlap stability.
[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a 3D heat spreader with a capillary overlap structure to address the above-mentioned deficiencies of the prior art, thereby improving the overlap stability between the heat pipe and the plate.
[0006] The technical solution adopted by this utility model to solve the technical problem is as follows:
[0007] A 3D heat spreader with a capillary overlap structure, comprising:
[0008] Upper shell; the upper shell is provided with multiple mounting holes, which are used to mate with heat pipes;
[0009] The lower shell is used to fasten with the upper shell and enclose it to form an accommodating space.
[0010] A capillary layer is disposed on the lower shell and located within the receiving space;
[0011] A capillary overlap structure column is located within the receiving space and is attached to the capillary structure layer; the heat pipe passes through the mounting hole and is sleeved on the capillary overlap structure column;
[0012] At least one flow channel is disposed on the capillary overlap structure column and extends axially to connect the heat pipe to the receiving space.
[0013] The 3D heat exchange plate with a capillary overlap structure is wherein the capillary overlap structure column cooperates with the mounting hole to be inserted into or removed from the receiving space through the mounting hole.
[0014] The 3D temperature distribution plate with a capillary overlap structure, wherein the capillary overlap structure columns include:
[0015] The upper column is detachably inserted into the heat pipe;
[0016] The lower column is disposed at the axial end of the upper column and located outside the heat pipe; the lower column is in contact with the capillary structure layer; the outer diameter of the lower column is larger than the outer diameter of the upper column.
[0017] The 3D temperature equalization plate with capillary overlap structure, wherein the upper column and the lower column are integrally formed.
[0018] The 3D heat spreader with a capillary overlap structure, wherein the outer diameter of the lower column is greater than or equal to the outer diameter of the heat pipe.
[0019] The 3D heat spreader with capillary overlap structure further includes:
[0020] A limiting sleeve is disposed on the upper shell and located outside the receiving space; the limiting sleeve is coaxially arranged with the mounting hole and sleeved on the heat pipe.
[0021] The 3D heat spreader with capillary overlap structure, wherein the limiting sleeve and the upper shell are integrally formed.
[0022] The 3D heat spreader with capillary overlap structure has four flow channels, which are evenly distributed along the circumference of the capillary overlap structure column.
[0023] The 3D heat spreader with capillary overlap structure further includes:
[0024] Multiple support columns are disposed on the lower shell and support the upper shell.
[0025] Beneficial effects: In this application, the capillary connection between the heat pipe and the capillary structure layer is achieved through the insertion and cooperation of the capillary overlap structure column and the heat pipe; and by setting the flow guide groove on the capillary overlap structure column, the cutting operation at the end of the heat pipe is avoided, so that the capillary overlap between the heat pipe and the plate part is optimized from the existing line-to-surface contact to surface-to-surface contact, thereby improving the stability of the overlap between the heat pipe and the plate part in the 3D heat spreader. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of a heat pipe in the prior art;
[0027] Figure 2 This is a schematic diagram of the assembly structure of the heat pipe and the flat plate in the prior art;
[0028] Figure 3 This is a schematic diagram of the assembly structure of the heat pipe and the flat plate in this utility model;
[0029] Figure 4 This is a schematic diagram of the assembly structure of the heat pipe and the capillary overlap support column in this utility model;
[0030] Figure 5 This is an exploded structural diagram of the flat plate portion in this utility model;
[0031] Figure 6 These are schematic diagrams of the heat pipe, the capillary overlap structure column, and the lower shell described in this utility model.
[0032] Figure 7 This is a schematic diagram of the flat plate portion in this utility model. Detailed Implementation
[0033] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.
[0034] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0035] This application provides a 3D heat spreader with a capillary overlap structure, such as Figure 3 and Figure 4 As shown, the 3D heat spreader with capillary overlap structure includes: an upper shell 1, a lower shell 2, and a capillary structure layer 3 (e.g., ...). Figure 5 and Figure 7 (as shown), capillary overlap structure column 5 and at least one guide channel 6 (as shown) Figure 4 and Figure 6 As shown); the upper shell 1 is provided with a plurality of mounting holes 10 (as shown). Figure 5 As shown), the mounting holes 10 are used to mate with the heat pipes 4; the lower shell 2 is used to fasten with the upper shell 1, and together they form a receiving space 20 (as shown). Figure 7 (As shown); the capillary structure layer 3 is disposed on the lower shell 2 and located within the receiving space 20; the capillary overlap structure column 5 is located within the receiving space 20 and is attached to the capillary structure layer 3; the heat pipe 4 passes through the mounting hole 10 and is sleeved on the capillary overlap structure column 5; the flow guide groove 6 is disposed on the capillary overlap structure column 5 and extends axially to connect the heat pipe 4 with the receiving space 20.
[0036] Specifically, the upper shell 1 and the lower shell 2 are interlocked to form a receiving space 20; after the upper shell 1 and the lower shell 2 are interlocked, they form a flat portion of a 3D heat spreader, which is then fitted with the heat pipe 4. The mounting hole 10 is used to engage with the heat pipe 4, allowing the heat pipe 4 to be inserted into the receiving space 20; the capillary structure layer 3 is disposed on the inner surface of the lower shell 2 and is used to adhere to the capillary overlap structure column 5; thus, when the capillary overlap structure column 5 is placed in the receiving space 20 and adheres to the capillary structure layer 3, and one end of the heat pipe 4 is placed in the receiving space 20 and inserted into the capillary overlap structure column 5, the heat pipe 4 can be capillarily connected to the capillary structure layer 3 through the capillary overlap structure column 5.
[0037] Furthermore, since the capillary overlap structure column 5 is provided with the flow guide groove 6, when the heat pipe 4 is inserted into the capillary overlap structure column 5, the airflow in the receiving space 20 can enter the heat pipe 4 through the flow guide groove 6 and exchange airflow with the heat pipe 4. This means that the port of the heat pipe 4 inserted into the receiving space 20 does not need to be cut. Thus, the contact between the heat pipe 4 and the capillary structure layer 3 through the capillary overlap structure column 5 is a surface-to-surface contact, which improves the stability of the overlap between the heat pipe 4 and the flat plate in the 3D heat spreader.
[0038] As can be seen, in this application, the capillary connection between the heat pipe 4 and the capillary structure layer 3 is achieved through the insertion and cooperation of the capillary overlap structure column 5 and the heat pipe 4; and by setting the flow guide groove 6 on the capillary overlap structure column 5, the cutting operation at the port of the heat pipe 4 is avoided, so that the capillary overlap between the heat pipe 4 and the plate part is optimized from the existing line-to-surface contact to surface-to-surface contact, thereby achieving the purpose of improving the stability of the overlap between the heat pipe 4 and the plate part in the 3D heat spreader.
[0039] It should be noted that a capillary layer is provided on the inner wall of the heat pipe 4; when the heat pipe 4 is inserted into the capillary overlap structure column 5 and the capillary overlap structure column 5 is attached to the capillary structure layer 3, the capillary connection between the heat pipe 4 and the capillary structure layer 3 can be realized.
[0040] In one embodiment of this application, the capillary overlap structure column 5 cooperates with the mounting hole 10 to be inserted into or removed from the receiving space 20 through the mounting hole 10.
[0041] Specifically, the capillary overlap structure column 5 can mate with the mounting hole 10 and be inserted into the receiving space 20 through the mounting hole 10, or the capillary overlap structure column 5 can be removed from the mounting hole 10 through the receiving space 20. When assembling the 3D heat spreader with the capillary overlap structure, the upper shell 1 and the lower shell 2 are first fastened together to form the receiving space 20. Then, the heat pipe 4 is sleeved onto the capillary overlap structure column 5, and the capillary overlap structure column 5 is inserted into the receiving space 20 through the mounting hole 10 until the capillary overlap structure column 5 is in contact with the capillary structure layer 3, thus achieving capillary connection between the heat pipe 4 and the flat plate. The installation method of assembling the capillary overlap structure column 5 with the heat pipe 4 and then inserting it into the receiving space 20 through the mounting hole 10 allows the heat pipe 4 and the capillary overlap structure column 5 to make more precise contact with other parts of the 3D heat spreader, thereby improving thermal efficiency.
[0042] Similarly, when the heat pipe 4 needs to be repaired or replaced during use, force can be applied to the heat pipe 4 to pull the heat pipe 4 along with the capillary overlap structure column 5 out of the mounting hole 10, thereby disassembling and replacing the heat pipe 4 without having to disassemble the entire flat plate structure of the 3D heat spreader. This design facilitates later maintenance and replacement, reducing complexity and cost.
[0043] like Figure 4 and Figure 6 As shown, the capillary overlap structure column 5 includes an upper column 51 and a lower column 52; the upper column 51 is detachably inserted into the heat pipe 4; the lower column 52 is disposed at the axial end of the upper column 51 and located outside the heat pipe 4; the lower column 52 is in contact with the capillary structure layer 3; the outer diameter of the lower column 52 is larger than the outer diameter of the upper column 51.
[0044] Specifically, the upper column 51 and the lower column 52 are coaxially distributed and connected to each other; a certain difference is formed between the outer diameter of the lower column 52 and the outer diameter of the upper column 51, so that the joint between the upper column 51 and the lower column 52 can form a step-like structure. When the capillary overlap structure is inserted into the heat pipe 4, only the upper column 51 can be inserted into the heat pipe 4, while the axial end face of the lower column 52 near the upper column 51 can contact the axial end face of the heat pipe 4, thereby limiting the heat pipe 4, increasing the contact area between the heat pipe 4 and the capillary overlap structure column 5, and improving the stability of the insertion assembly between the heat pipe 4 and the capillary overlap structure column 5.
[0045] The flow guide 6 extends from the axial end face of the lower column 52 near the lower shell 2 towards the axial end face of the upper column 51 near the upper shell 1, that is, the flow guide 6 sequentially penetrates the lower column 52 and the upper column 51 along the axial direction. When the heat pipe 4 is inserted into the capillary overlap structure column 5, the lower column 52 separates the heat pipe 4 from the capillary structure layer 3, allowing the airflow in the receiving space 20 to enter the heat pipe 4 through the flow guide 6, thus eliminating the need to cut the port of the heat pipe 4.
[0046] In one embodiment of this application, the upper column 51 and the lower column 52 are integrally formed, thereby improving the structural stability of the capillary overlap structure column 5 itself.
[0047] In one embodiment of this application, the outer diameter of the lower column 52 is greater than or equal to the outer diameter of the heat pipe 4.
[0048] Specifically, when the outer diameter of the lower column 52 is equal to the outer diameter of the heat pipe 4, the difference in outer diameter between the lower column 52 and the upper column 51 is sufficient to block and limit the lower column 52, thereby avoiding cutting operations at the port of the heat pipe 4; when the heat pipe 4 is inserted into the capillary overlap structure column 5, it can form a unified whole in appearance, and be assembled in the accommodating space 20 through the mounting hole 10.
[0049] When the outer diameter of the lower column 52 is larger than the outer diameter of the heat pipe 4, the lower column 52 can not only satisfy the function of blocking and limiting the heat pipe 4, but also be thicker than the heat pipe 4 in overall appearance. Therefore, when it is necessary to separate the heat pipe 4 from the capillary overlap structure column 5, it is easier to separate the heat pipe 4 from the capillary overlap structure column 5 by applying force to the heat pipe 4 and the lower column 52 respectively.
[0050] like Figure 3 and Figure 5As shown, the 3D heat spreader with capillary overlap structure also includes a limiting sleeve 7; the limiting sleeve 7 is disposed on the upper shell 1 and located outside the receiving space 20; the limiting sleeve 7 is coaxially arranged with the mounting hole 10 and sleeved on the heat pipe 4.
[0051] Specifically, the limiting sleeve 7 is located outside the upper shell 1 and is fixedly connected to the upper shell 1; the inner diameter of the limiting sleeve 7 is matched with the heat pipe 4 and the capillary overlap structure column 5, so that the whole formed by the capillary overlap structure column 5 and the heat pipe 4 after insertion can pass through the limiting sleeve 7 and be inserted into the receiving space 20 after passing through the mounting hole 10.
[0052] The limiting sleeve 7 protrudes from the outer surface of the upper shell 1, thereby partially overlapping with the heat pipe 4, reducing the skewing of the heat pipe 4 after assembly in the mounting hole 10, and enhancing the stability of the heat pipe 4 in the accommodating space 20.
[0053] In one embodiment of this application, the limiting sleeve 7 and the upper shell 1 are integrally formed, thereby improving the stability of the connection between the limiting sleeve 7 and the upper shell 1, and further enhancing the limiting effect of the limiting sleeve 7 on the heat pipe 4.
[0054] In one embodiment of this application, there are four flow guide channels 6, which are evenly distributed along the circumferential direction of the capillary overlap structure column 5.
[0055] Specifically, if there is only one guide channel 6, the steam flow may be too concentrated, causing local overheating or uneven flow, affecting the overall heat transfer efficiency of the heat pipe 4. In this embodiment, four guide channels 6 are provided on the capillary overlap structure column 5, and the four guide channels 6 are evenly distributed along the circumference of the capillary overlap structure column 5, effectively dispersing the steam flow, avoiding local overheating, ensuring a more uniform heat load distribution throughout the heat pipe 4, and avoiding overly complex structural design while ensuring stable fluid flow, thereby improving the overall heat pipe 4 management effect without reducing heat transfer efficiency.
[0056] like Figure 5 and Figure 6 As shown, the 3D heat exchange plate with capillary overlap structure also includes multiple support columns 8, which are disposed on the lower shell 2 and support the upper shell 1. The support columns 8 are used to support the lower shell 2 and the upper shell 1 respectively within the receiving space 20, thereby reducing the deformation of the flat plate structure formed after the upper shell 1 and the lower shell 2 are fastened together, thus ensuring heat exchange efficiency.
[0057] In summary, this application provides a 3D heat spreader with a capillary overlap structure, comprising: an upper shell; the upper shell having a plurality of mounting holes for engaging with heat pipes; a lower shell; the lower shell for fastening with the upper shell and forming an accommodating space; a capillary structure layer disposed on the lower shell and located within the accommodating space; a capillary overlap structure column located within the accommodating space and abutting the capillary structure layer; the heat pipe passing through the mounting holes and fitted onto the capillary overlap structure column; and at least one flow channel disposed on the capillary overlap structure column and extending axially to connect the heat pipe with the accommodating space. In this application, the capillary connection between the heat pipe and the capillary structure layer is achieved through the insertion and cooperation of the capillary overlap structure column and the heat pipe; and by setting the flow guide groove on the capillary overlap structure column, the cutting operation at the end of the heat pipe is avoided, so that the capillary overlap between the heat pipe and the plate part is optimized from the existing line-to-surface contact to surface-to-surface contact, thereby improving the stability of the overlap between the heat pipe and the plate part in the 3D heat spreader.
[0058] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A 3D heat spreader with a capillary overlap structure, characterized in that, It includes: Upper shell; the upper shell is provided with multiple mounting holes, which are used to mate with heat pipes; The lower shell is used to fasten with the upper shell and enclose it to form an accommodating space. A capillary layer is disposed on the lower shell and located within the receiving space; A capillary overlap structure column is located within the receiving space and is attached to the capillary structure layer; the heat pipe passes through the mounting hole and is sleeved on the capillary overlap structure column; At least one flow channel is disposed on the capillary overlap structure column and extends axially to connect the heat pipe to the receiving space; A limiting sleeve is disposed on the upper shell and located outside the receiving space; the limiting sleeve is coaxially arranged with the mounting hole and sleeved on the heat pipe; the limiting sleeve is used to reduce the skewness of the heat pipe after it is assembled in the mounting hole; The capillary overlap structural column includes: The upper column is detachably inserted into the heat pipe; A lower column is disposed at the axial end of the upper column and located outside the heat pipe; the lower column is in contact with the capillary structure layer; the outer diameter of the lower column is larger than the outer diameter of the upper column; the outer diameter of the lower column is larger than the outer diameter of the heat pipe. The capillary overlap structure column mates with the mounting hole, and the inner diameter of the limiting sleeve mates with the heat pipe and the capillary overlap structure column. The entire structure formed by the capillary overlap structure column and the heat pipe after insertion can pass through the limiting sleeve and be inserted into the receiving space through the mounting hole or taken out of the receiving space.
2. The 3D heat spreader with capillary overlap structure according to claim 1, characterized in that, The upper column and the lower column are integrally formed.
3. The 3D heat spreader with capillary overlap structure according to claim 1, characterized in that, The limiting sleeve and the upper shell are integrally formed.
4. The 3D heat spreader with capillary overlap structure according to claim 1, characterized in that, There are four flow channels, which are evenly distributed along the circumference of the capillary overlap structure column.
5. The 3D heat spreader with capillary overlap structure according to claim 1, characterized in that, It also includes: Multiple support columns are disposed on the lower shell and support the upper shell.