A 3d vapor chamber having plate-shaped fins

Abstract

The application discloses a 3D uniform temperature plate with a plate-shaped fin, which comprises a lower shell, an upper cover buckled on the lower shell, a plurality of flow guide openings arranged on the upper cover in the length direction, the flow guide openings being arranged along the width direction of the upper cover, at least one plate-shaped fin, a cavity in the plate-shaped fin, the plate-shaped fin being arranged at the flow guide opening and shielding the flow guide opening, so that the cavity is communicated with the flow guide opening, and a capillary structure layer distributed on the inner wall of the upper cover and the plate-shaped fin. In the application, the plate-shaped fin is a plate-shaped plane structure, compared with a heat pipe in the prior art, the capillary structure layer on the inner wall of the plate-shaped fin has a larger capillary volume, has a larger heat exchange area, has a larger liquid storage capacity of the capillary structure, can carry more condensate backflow, and thus improves the overall backflow capacity, and the purpose of improving the heat exchange efficiency of the 3D uniform temperature plate is achieved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a 3D heat exchanger with plate-shaped fins. Background Technology

[0002] 3D vapor chambers, unlike ordinary flat vapor chambers, incorporate a through-flow steam chamber in the normal direction. Compared to externally welded heat pipes or other heat-conducting elements, 3D vapor chambers directly conduct heat to the heat dissipation area via steam, reducing thermal resistance between components and significantly minimizing temperature gradient changes along the heat transfer path. Figure 1 As shown, the current 3D vapor chamber is a flat vapor chamber with a tubular vapor chamber (i.e., heat pipe 100) added to it to provide evaporation and recirculation of the working fluid. However, the diameter of each heat pipe is small, and the capillary volume of the evaporation chamber and recirculation of the working fluid provided by each heat pipe is small, resulting in a low overall heat exchange efficiency of the 3D vapor chamber.

[0003] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a 3D heat exchange plate with plate-shaped fins to address the above-mentioned deficiencies of the prior art, thereby improving the heat exchange efficiency of the heat exchange plate.

[0005] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0006] A 3D heat spreader with plate-like fins, comprising:

[0007] Lower shell;

[0008] The upper cover is fastened to the lower shell; the upper cover has multiple flow guides along its length and the flow guides extend along the width of the upper cover.

[0009] At least one plate-shaped fin; the plate-shaped fin has a cavity; the plate-shaped fin is disposed at the flow guide and blocks the flow guide, so that the cavity communicates with the flow guide;

[0010] A capillary layer is distributed on the inner wall of the upper cover and the plate-shaped fins.

[0011] The 3D heat spreader with plate-shaped fins, wherein the plate-shaped fins and the upper cover are integrally formed by bending a flat plate.

[0012] The 3D heat spreader with plate-shaped fins, wherein the capillary layer on the upper cover and the capillary layer on the plate-shaped fins are integrally sintered and formed.

[0013] The 3D heat spreader with plate-shaped fins, wherein the plate comprises:

[0014] Tablet body;

[0015] The raised ribs are disposed on one side of the plate body and arranged in a closed loop around the circumference of the plate body so that they adhere to each other when the plate body is bent and forms the plate-shaped fins.

[0016] The 3D heat spreader with plate-shaped fins, wherein the plate further includes:

[0017] At least one isolation rib is disposed on the plate body and is located on the same side as the protruding rib; the isolation rib is located within the closed-loop structure, and both ends of the isolation rib are respectively connected to the protruding rib to form a bending area at the isolation rib.

[0018] The 3D heat spreader with plate-shaped fins further includes:

[0019] At least one support unit; the support unit includes two support components, which are disposed on the plate body and located on the same side as the rib; the two support components are distributed on both sides of the isolation rib and correspond to each other to support the cavity.

[0020] The 3D heat spreader with plate-shaped fins, wherein the support assembly includes:

[0021] Multiple support columns are arranged in an array, and there is a gap between each pair of adjacent support columns.

[0022] The 3D heat spreader with plate-shaped fins further includes:

[0023] Multiple positioning elements are disposed on the inner sidewall of the lower shell and arranged sequentially along the circumference of the lower shell;

[0024] The rib has a mounting hole corresponding to the positioning member, and the mounting hole is assembled with the positioning member through a connector.

[0025] The 3D heat spreader with plate-shaped fins further includes:

[0026] Multiple supports are disposed inside the lower shell and support the upper cover.

[0027] Beneficial effects: In this application, since the plate-shaped fins are plate-shaped planar structures, compared with heat pipes in the prior art, the capillary structure layer on the inner wall of the plate-shaped fins in this application has a larger capillary volume and a larger heat exchange area, which makes the liquid storage capacity of the capillary structure greater and can carry more condensate reflux, thereby improving the overall reflux capacity and achieving the purpose of improving the heat exchange efficiency of the 3D heat exchange plate. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a 3D vapor chamber in the prior art;

[0029] Figure 2 This is a schematic diagram of the structure of the 3D heat spreader with single-plate fins in this utility model;

[0030] Figure 3 This is a reference diagram showing the flat plate in its unbent state as described in this utility model.

[0031] Figure 4 This is a schematic diagram of the structure of the 3D heat spreader with double-plate-shaped fins in this utility model;

[0032] Figure 5 This is a schematic diagram of the lower shell structure described in this utility model;

[0033] Figure 6 This is a schematic diagram of the structure in which the cavity and the receiving cavity are connected through the flow guide port in this utility model;

[0034] Figure 7 This is a partial cross-sectional structural diagram of the plate-shaped fins described in this utility model. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] This application provides a 3D heat spreader with plate-like fins, such as... Figure 2 and Figure 4 As shown, the 3D vapor chamber with plate-like fins includes: a lower shell 1, an upper cover 2, at least one plate-like fin 3, and a capillary layer; the lower shell 1 has a vapor chamber and an upwardly arranged opening; the upper cover 2 is fastened to the lower shell 1 and covers the opening. Figure 6As shown, the upper cover 2 has a plurality of flow guide ports 21 along its length direction, and the flow guide ports 21 extend along the width direction of the upper cover 2; the plate-shaped fins 3 have cavities 31; the plate-shaped fins 3 are disposed at the flow guide ports 21 and block the flow guide ports 21 so that the cavity 31 communicates with the flow guide ports 21; the capillary structure layer is distributed on the inner walls of the upper cover 2 and the plate-shaped fins 3.

[0038] Specifically, the plate-shaped fins 3 have cavities 31, and the plate-shaped fins 3 block the flow guide 21. The combination of the plate-shaped fins 3 and the upper cover 2 allows a continuous airflow channel to be formed between the receiving cavity 30 formed by the upper cover 2 and the lower shell 1, the flow guide 21, and the cavity 31. The capillary structure layer is distributed throughout the inner wall of the upper cover 2 and the inner wall of the plate-shaped fins 3. The communication between the receiving cavity 30, the flow guide 21, and the cavity 31 allows for the return of the working fluid, thereby achieving heat exchange in the 3D heat exchanger.

[0039] In existing technologies, the capillary volume on the inner wall of heat pipes is small due to limitations in pipe diameter and size, resulting in limited reflux capacity. Under high heat flux density, flow saturation is easily achieved, affecting heat exchange performance. However, in this application, because the plate-shaped fins 3 have a plate-shaped planar structure, compared to existing heat pipes, the capillary structure layer on the inner wall of the plate-shaped fins 3 has a larger capillary volume and a larger heat exchange area. This results in a greater liquid storage capacity of the capillary structure, allowing it to handle more condensate reflux, thereby improving the overall reflux capacity and achieving the goal of improving the heat exchange efficiency of the 3D vapor chamber.

[0040] In one embodiment of this application, the plate-shaped fins 3 and the upper cover 2 are made of a flat plate 10 (such as...). Figure 3 (As shown) Integrated bending and forming structure.

[0041] Specifically, the plate-shaped fins 3 and the upper cover 2 are integrally formed and are integrally bent from the flat plate 10. After the flat plate 10 is stretched, it is folded along the normal direction, and blank areas are reserved at both ends to cover the opening; the bent part of the flat plate 10 forms a "U"-shaped structure, thereby forming the plate-shaped fins 3. Therefore, the width of the plate-shaped fins 3 extends along the width of the upper cover 2 as a whole, so that the capillary volume along the width direction of the upper cover 2 can reach its maximum.

[0042] The plate-shaped fin 3 can be one or more. For example... Figure 2 As shown, a single-plate fin can be obtained by stretching the plate 10 only once along the normal direction; a double-plate fin can be obtained by stretching the plate 10 twice along the normal direction (e.g., ...). Figure 4(As shown). It is understood that, regardless of whether it is a single-plate fin, a double-plate fin, or even a multi-plate fin 3, a certain blank area needs to be reserved at both ends of the length direction of the plate 10 so as to cooperate with the lower shell 1 to cover the opening and form the closed receiving cavity 30; and, when it is a double-plate fin or a multi-plate fin 3, there is a gap between two adjacent plate fins 3.

[0043] In one embodiment of this application, the capillary layer on the upper cover 2 and the capillary layer on the plate-shaped fin 3 are integrally sintered and formed.

[0044] Specifically, after stretching the plate 10, the capillary structure layer is sintered on the plate 10, and then the plate 10 is bent. The capillaries in the plate-shaped fins 3 extending in the normal direction are sintered synchronously with the capillaries in the upper cover 2. The capillary connection has high reliability and further improves the working fluid recirculation capability of the 3D heat spreader.

[0045] One embodiment of this application, such as Figure 3 As shown, the plate 10 includes a plate body 101 and a rib 102; the rib 102 is disposed on one side of the plate body 101 and is arranged in a closed loop around the circumference of the plate body 101 so that they are bonded together when the plate body 101 is bent and forms the plate-shaped fins 3.

[0046] Specifically, the rib 102 is arranged along the edge of the plate body 101 and surrounds the plate body 101 in a closed-loop structure. The plate body 101 provides the main structure of the upper cover 2 and the plate-shaped fin 3. The rib 102 is arranged to protrude from the surface of the plate body 101. When the plate body 101 is bent in the normal direction at a suitable position, the rib 102 is located on the inner side. The two plate structures opposite to each other at the bend can be glued together by the protruding rib 102, thereby sealing both sides of the plate-shaped fin 3 in the width direction. This allows a sealed cavity 31 to be formed inside the plate-shaped fin 3, ensuring airflow between the plate-shaped fin 3 and the receiving cavity 30.

[0047] like Figure 7 As shown, when the flat plate body 101 is bent, the corresponding portion of the protruding rib 102 also bends. Due to the protruding and supporting effect of the protruding rib 102, the flat plate bodies 101 arranged opposite each other at the bend will not be completely fitted together. Therefore, in addition to bonding the two sides of the plate-shaped fin 3 in the width direction to seal the cavity 31, the protruding rib 102 can also support the two plate-shaped structures of the plate-shaped fin 3 to ensure the volume of the cavity 31.

[0048] One embodiment of this application, such as Figure 3 As shown, the plate 10 further includes at least one isolation rib 5; the isolation rib 5 is disposed on the plate body 101 and is located on the same side as the protruding rib 102; the isolation rib 5 is located within the closed-loop structure, and both ends of the isolation rib 5 are respectively connected to the protruding rib 102 to form a bending area at the isolation rib 5.

[0049] Specifically, when only one plate-shaped fin 3 is manufactured, there is one isolation rib 5; when two plate-shaped fins 3 are manufactured, there are two isolation ribs 5; the number of isolation ribs 5 is equal to the number of plate-shaped fins 3. The isolation rib 5 is located at the bent portion of the plate-shaped fin 3 on the side away from the upper cover 2 (i.e., the top of the plate-shaped fin 3), that is, the isolation rib 5 is used to form a bent area, ensuring that the bent area has a certain width, and forming the top of the plate-shaped fin 3, thereby improving the strength of the top of the plate-shaped fin 3.

[0050] like Figure 3 As shown, the 3D heat spreader with plate-shaped fins 3 further includes at least one support unit 6; the support unit 6 includes two support components, which are disposed on the plate body 101 and located on the same side as the rib 102; the two support components are distributed on both sides of the isolation rib 5 and correspond to each other to support the cavity 31.

[0051] Specifically, when there is only one plate-shaped fin 3, there is one support unit 6; when there are two plate-shaped fins 3, there are two support units 6; the number of support units 6 is equal to the number of plate-shaped fins 3. The support components are arranged in pairs and separated by the isolation ribs 5, so that when the two sides of the flat plate body 101 corresponding to the isolation ribs 5 are bent in the normal direction, the two support components can correspond to each other and support each other, thereby supporting the cavity 31 and ensuring the volume of the cavity 31.

[0052] Since the plate-shaped fins 3 are relatively thin plate-shaped structures, the isolation ribs 5 and the support components are provided on the plate body 101 so that the plate-shaped fins 3 formed after the plate body 101 is bent can be supported by the isolation ribs 5 and the support components, ensuring the stability of the plate-shaped structure of the plate-shaped fins 3, while ensuring the volume of the cavity 31, thereby ensuring the heat exchange effect of the 3D heat exchange plate.

[0053] The support assembly includes multiple support columns 61 arranged in an array, with a gap between each pair of adjacent support columns 61. The support columns 61 of the two support assemblies in the support unit 6 correspond one-to-one, so that after the flat plate body 101 is bent to form the plate-shaped fin 3, the corresponding two support columns 61 can abut against each other, thereby supporting the internal space of the plate-shaped fin 3. Simultaneously, the gap between each pair of adjacent support columns 61 allows for airflow between the cavity 31 and the receiving cavity 30.

[0054] One embodiment of this application, such as Figure 5 As shown, the 3D heat spreader with plate-shaped fins 3 further includes multiple positioning elements 7; the positioning elements 7 are disposed on the inner sidewall of the lower shell 1 and arranged sequentially along the circumference of the lower shell 1; as shown... Figure 3 As shown, the rib 102 is provided with a mounting hole 8 corresponding to the positioning member 7, and the mounting hole 8 is assembled with the positioning member 7 through a connector.

[0055] Specifically, the outer edge of the upper cover 2 is connected to the lower shell 1 by welding. The positioning member 7 is used to install the connector, so that the upper cover 2 can be positioned on the lower shell 1, thereby ensuring the stability of the assembly between the upper cover 2 and the lower shell 1. In addition to providing an adhesive sealing function inside the plate-shaped fins 3, the rib 102 can also improve the strength of the flat plate body 101. When the mounting hole 8 is provided on the rib 102 and the mounting hole 8 is assembled with the positioning member through the connector, the flat plate body 101 corresponding to the mounting hole 8 is not easily deformed, that is, the upper cover 2 is not easily deformed, thereby ensuring the sealing of the receiving cavity 30.

[0056] like Figure 5 As shown, the 3D heat spreader with plate-shaped fins 3 also includes multiple supports 9. The supports 9 are disposed inside the lower shell 1 and support the upper cover 2 to prevent the upper cover 2 from collapsing and deforming, thereby ensuring the stability of the internal space of the accommodating cavity 30.

[0057] In summary, this application provides a 3D vapor chamber with plate-shaped fins, comprising: a lower shell; an upper cover fastened to the lower shell; the upper cover having multiple flow guides along its length, the flow guides extending along the width of the upper cover; at least one plate-shaped fin; the plate-shaped fin having a cavity; the plate-shaped fin being disposed at the flow guide and blocking the flow guide, so that the cavity communicates with the flow guide; and a capillary structure layer distributed on the inner walls of the upper cover and the plate-shaped fin. In this application, because the plate-shaped fin is a plate-shaped planar structure, compared to heat pipes in the prior art, the capillary structure layer on the inner wall of the plate-shaped fin has a larger capillary volume and a larger heat exchange area, resulting in a greater liquid storage capacity of the capillary structure and the ability to carry more condensate backflow, thereby improving the overall backflow capacity and achieving the goal of improving the heat exchange efficiency of the 3D vapor chamber.

[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 plate-shaped fins, characterized in that, It includes: Lower shell; The upper cover is fastened to the lower shell; The upper cover has multiple flow guides along its length, and the flow guides extend along the width of the upper cover. At least one plate-shaped fin; the plate-shaped fin has a cavity; the plate-shaped fin is disposed at the flow guide and blocks the flow guide, so that the cavity communicates with the flow guide; A capillary layer is distributed on the inner wall of the upper cover and the plate-shaped fins; At least one support unit; The support unit includes two support components; The plate-shaped fins and the upper cover are integrally bent from a flat plate; The flat plate includes: Tablet body; The ribs are provided on one side of the plate body and arranged in a closed loop around the circumference of the plate body to bond with each other when the plate body is bent and forms the plate-shaped fins, and to support the two plate-shaped structures of the plate-shaped fins to ensure the volume of the cavity. The flat panel also includes: At least one isolation rib is disposed on the plate body and is located on the same side as the protruding rib; the isolation rib is located within the closed-loop structure, and both ends of the isolation rib are respectively connected to the protruding rib to form a bending area at the isolation rib; the support assembly is disposed on the plate body and is located on the same side as the protruding rib; two support assemblies are distributed on both sides of the isolation rib and correspond to each other to support the cavity; The support components include: Multiple support columns are arranged in an array, and there is a gap between each pair of adjacent support columns; the support columns of the two support components in the support unit correspond one-to-one, so that when the flat plate body is bent to form the plate-shaped fin, the corresponding two support columns can abut against each other, thereby supporting the internal space of the plate-shaped fin.

2. The 3D heat spreader with plate-shaped fins according to claim 1, characterized in that, The capillary layer on the top cover and the capillary layer on the plate-shaped fins are integrally sintered and formed.

3. The 3D heat spreader with plate-shaped fins according to claim 1, characterized in that, It also includes: Multiple positioning elements are disposed on the inner sidewall of the lower shell and arranged sequentially along the circumference of the lower shell; The rib has a mounting hole corresponding to the positioning member, and the mounting hole is assembled with the positioning member through a connector.

4. The 3D heat spreader with plate-shaped fins according to claim 1, characterized in that, It also includes: Multiple supports are disposed inside the lower shell and support the upper cover.

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