TWI696801B - Complex vapor chamber structure - Google Patents

Abstract

A complex vapor chamber structure includes a main body and at least one tubular body. The main body has a first chamber, a first opening and a second opening. A first capillary structure is disposed in the first chamber. A working fluid is filled in the first chamber. The first and second openings pass through one face of the main body to communicate with the first chamber. The tubular body has a first end, a second end and a passage. The first and second ends are respectively correspondingly inserted in the first and second openings, whereby the passage of the tubular body communicates with the first chamber via the first and second ends to form a loop for vapor-liquid circulation.

Description

Composite temperature-equalizing plate structure

The invention relates to a temperature equalizing plate structure, in particular to a composite temperature equalizing plate structure which can greatly improve the heat dissipation efficiency.

As current electronic devices are gradually becoming thinner and thinner, the size of each component must be reduced accordingly. However, the heat generated by the reduction in size of electronic devices has become a major obstacle to improving the performance of electronic devices and systems. Therefore, in order to effectively solve the heat dissipation problem of components in electronic devices, the industry has proposed a Vapor chamber and a heat pipe with better thermal conductivity to effectively solve the current heat dissipation problem.

Vapor chamber includes a rectangular-shaped shell and a capillary structure on the wall surface of the inner chamber of the shell, and the interior of the shell is filled with working liquid, and one side of the shell (that is, the evaporation area) It is attached to a heating element (such as central processor, north-south bridge crystal, transistor, etc.) to absorb the heat generated by the heating element, so that the liquid working liquid is evaporated and converted into a vapor state in the evaporation area of the casing. Conducting heat to the condensation area of the shell, the vaporous working liquid is condensed into a liquid state after being cooled in the condensation area, and the liquid working liquid flows back to the evaporation area through gravity or capillary structure to continue the vapor-liquid circulation to effectively achieve The effect of uniform temperature heat dissipation.

The principle and theoretical structure of the heat pipe is the same as that of the temperature equalizing plate. A capillary structure is provided on the inner wall of the heat pipe, and then the heat pipe is evacuated and filled with working liquid, and finally closed to form a heat pipe structure. When the working liquid is heated and evaporated by the evaporation part, it diffuses to the condensing end, and the working liquid Since the evaporation part is in a vapor state, it gradually cools, condenses, and turns into a liquid state when it diffuses from the evaporation part to the condensation end, and then returns to the evaporation part through the capillary structure.

Comparing the temperature equalization plate and the heat pipe, only the heat conduction method is different. The heat conduction method of the temperature equalization plate is two-dimensional, which is the surface heat conduction method. However, the heat pipe heat conduction method is the one-dimensional heat conduction method (ie, remote heat dissipation). Therefore, today's electronic components are only used with a single heat pipe or temperature equalization plate, so some people use the temperature equalization plate and the heat pipe together. When the working liquid inside the temperature equalization plate is heated and evaporated, it is converted into a vapor state. Liquid, except that a part of the working liquid will flow toward the top side of the temperature equalization plate, the other part of the working liquid will flow to a condensing end of the heat pipe and be converted into a liquid working liquid, and then return to the capillary force of the heat pipe capillary structure. Vapor-liquid circulation is achieved in the temperature equalization plate. However, although the conventional temperature equalization plate combined with the heat pipe can have the effect of uniform temperature heat dissipation and remote heat dissipation, relatively, when the liquid working liquid returns from the condensation end of the heat pipe to the average During the process inside the warm plate, the flow path is relatively elongated, which also increases the heat dissipation time, resulting in poor heat dissipation efficiency.

Secondly, in order to effectively solve the above-mentioned problems, the main purpose of the present invention is to provide a composite temperature equalizing plate structure that greatly improves the overall heat dissipation efficiency.

To achieve the above object, the present invention provides a composite temperature-equalizing plate structure, which includes a body and at least one tube; the body has a first chamber and a first opening and a second opening, the first cavity The chamber has a first capillary structure and is filled with a working liquid. The first and second openings penetrate one side of the body and communicate with the first chamber. The tube body has a first end, a second end and a channel The first and second ends respectively plug into the first and second openings, and the channel communicates with the first chamber through the first and second ends.

Through the design of the structure of the present invention, when at least one heat source is attached to the body, first, the first plate of the body (ie, the evaporation area) will absorb the heat generated by the heat source to work in the liquid state in the first chamber The liquid evaporates and is converted into a vaporous working liquid. A part of the vaporous working liquid diffuses and conducts heat to the second plate (ie, the condensation zone) of the body, where the vaporous working liquid is condensed after cooling. Liquid state, the liquid working liquid drops to the first capillary structure and flows back to the first plate body to continue the vapor-liquid circulation, so as to effectively achieve the effect of uniform temperature heat dissipation. In addition, another part of the vapor-state working liquid passes the The structure design of the channel of the tube body and the first chamber of the body communicating with each other diffuses into the channel of the tube body to condense, and condenses into the channel to transform into a liquid working liquid. In this way, the composite temperature equalization of the present invention The plate structure has both two-dimensional and three-dimensional heat conduction modes, which can achieve a loop vapor-liquid circulation inside the first chamber of the body and the channel of the tube body, which can greatly improve the overall heat dissipation efficiency.

2: Composite temperature-average plate structure

20: Ontology

20a: the first plate

20b: second plate

200: first chamber

201: the first opening

202: second opening

21: The first capillary structure

22: Working fluid

3: tube body

30: first end

300: first extension

301: the first gap

31: Second end

310: second extension

311: Second notch

32: channel

4: First flange

5: second flange

6: cooling fin set

Fig. 1 is an exploded perspective view of the first embodiment of the composite temperature equalizing plate structure of the present invention; Fig. 2 is a perspective assembled view of the first embodiment of the composite temperature equalizing plate structure of the present invention; Partial perspective sectional view of the second embodiment of the composite temperature equalizing plate structure of the invention; FIG. 4 is a perspective exploded view of the third embodiment of the composite temperature equalizing plate structure of the invention; FIG. 5 is a composite temperature equalizing plate of the invention A three-dimensional assembly diagram of the third embodiment of the structure; FIG. 6 is a schematic diagram of the implementation of the third embodiment of the composite temperature equalizing plate structure of the present invention.

The above objects, structural and functional characteristics of the present invention will be described based on the preferred embodiments of the accompanying drawings.

Please refer to Figures 1, 2, and 3, which are a three-dimensional exploded view, a three-dimensional assembly view, and a partial three-dimensional cross-sectional view of the composite temperature equalizing plate structure of the present invention. As shown in the figure, a composite temperature equalizing plate structure 2 includes: A body 20 and at least one tube 3; The body 20 is covered by a first plate body 20a and a second plate body 20b and defines a first chamber 200 together. In the structural aspect of the present invention, the body 20 can be selected as a uniform temperature A hot plate or a hot plate or other equivalents can achieve the same effect in this case.

A first opening 201 and a second opening 202 are formed through the second plate body 20b, and the first and second openings 201 and 202 communicate with the first chamber 200 and are inside the first chamber 200 A first capillary structure 21 is provided and a working liquid 22 is filled inside.

The tube 3 has a first end 30 and a second end 31, and a channel 32 is formed inside the tube 3, and the first and second ends 30, 31 respectively correspond to the first opening of the body 20 201 and the second opening 202, so that the channel 32 of the tube body 3 communicates with the first chamber 200 of the body 20 through the first and second ends 30, 31, and is obvious from the first and second figures It can be seen that the tube 3 inserted on the body 20 has a structural form similar to a "ㄩ" shape or a "U" shape when viewed from above.

The material of the body 20 and the tube 3 is selected from copper, aluminum, iron, stainless steel, titanium, or titanium alloy. The body 20 and the tube 3 can be made of the same material or mixed together.

In addition, in the structural aspect of the present invention, the tube body 3 is selected to be a round heat pipe, a flat heat pipe, a D-type heat pipe, a flat plate heat pipe, or other equivalents, which can achieve the same in this case Of effect.

The inner wall of the channel 32 may be further provided with a second capillary structure (not shown), or the inner wall of the channel 32 is not provided with the second capillary structure (as shown in FIG. 2), in this embodiment It is assumed that the inner wall of the channel 32 does not have a second capillary structure as an illustrative embodiment and is not limited thereto.

The aforementioned first and second capillary structures 21 are preferably powder sintered bodies, but it is not limited to this. In specific implementation, any one of a mesh body, a fiber body, a groove, and a braided body can also be selected. The first and second capillary structures 21 may be the same structure, different structures or composite capillaries, and the first and second capillary structures 21 are formed by electrochemical deposition or electroforming or 3D printing or printing.

In addition, a plating layer (not shown in the figure) may be directly provided on the inner walls of the body 20 and the tube body 3, or alternatively, the plating layer may be further provided on the first and second capillary structures 21 as a lifting interior The structure of vapor-liquid circulation efficiency is used, and the plating layer is either hydrophilic or hydrophobic.

Please refer to FIG. 1, the composite temperature equalizing plate structure 2 further has at least a first flange 4 and a second flange 5, and the first and second flanges 4 and 5 are correspondingly provided on the second plate On the first and second openings 201 and 202 of the body 20b, the first and second ends 30 and 31 of the tube body 3 are correspondingly connected to the first and second flanges 4 and 5, respectively.

Please refer to FIG. 3, which is a partial perspective cross-sectional view of a second embodiment of the present invention. As shown in the figure, the first and second ends 30, 31 of the tube 3 further extend outward to form a first extension 300, respectively And a second extension portion 310, and the first and second extension portions 300, 310 extend into the first chamber 200 of the body 20, and at least at the first and second extension portions 300, 310 respectively A first notch 301 and at least one second notch 311, the first and second notches 301, 311 and the first chamber 200 of the body 20 communicate with each other, and the first and second extensions 301, 311 are optional The bottom side of the first chamber 200 is abutted (as shown in FIG. 3) or not (not shown in the figure) (that is, it is provided on one side of the first capillary structure 21).

Therefore, through the design of the structure of the present invention, when at least one heat source (not shown) and the body 20 are attached to each other, first, the first plate 20a (ie, the evaporation area) of the body 20 will adsorb the heat source The generated heat evaporates and converts the liquid working liquid 22 in the first chamber 200 into a vaporous working liquid 22, and a part of the vaporous working liquid 22 diffuses to conduct heat to the second plate body 20b of the body 20 (ie, condensation Zone), where the vaporous working liquid 22 is cooled and condensed into a liquid state, the liquid working liquid 22 drops the first capillary structure 21 back to the first plate body 20a to continue the vapor-liquid circulation, into In order to effectively achieve the effect of uniform temperature heat dissipation.

In addition, another part of the vaporous working liquid 22 is diffused into the channel 32 of the tube 3 for cooling by the structure design of the channel 32 of the tube 3 and the first chamber 200 of the body 20 communicating with each other Condensate, and condense in the channel 32 to transform into a liquid working liquid 22, so that the composite temperature equalizing plate structure 2 of the present invention has two-dimensional and three-dimensional heat conduction modes, which can reach the first chamber of the body 20 A loop vapor-liquid circulation is formed inside the channel 32 of the pipe 200 and the tube 3, which can greatly improve the overall heat dissipation efficiency.

Please refer to Figures 4, 5, and 6 which are a three-dimensional exploded view and a three-dimensional assembly diagram and an implementation schematic diagram of the third embodiment of the composite temperature equalizing plate structure of the present invention. As shown in the figure, the difference from the foregoing first embodiment lies in Two tubes 3 can be provided on the body 20, and the number and location of the tubes 3 are not limited. The tube 3 is set and adjusted according to the user's needs, and the tube 3 can also be According to the matching structure and height of the plurality of heat dissipation fin groups 6 (as shown in FIG. 6) for deployment, the aforementioned effects can also be achieved.

As mentioned above, the present invention has the following advantages over conventional ones: 1. Greatly improve the heat dissipation efficiency.

The present invention has been described in detail above, but the above is only one of the preferred embodiments of the present invention. When the scope of the present invention cannot be limited, that is, all changes and modifications made in accordance with the scope of the application of the present invention Etc., should still be covered by the patent of the present invention.

2: Composite temperature-average plate structure

20: Ontology

20a: the first plate

20b: second plate

201: the first opening

202: second opening

3: tube body

30: first end

31: Second end

4: First flange

5: second flange

Claims (13)

A composite temperature equalizing plate structure includes: a body having a first chamber and a first opening and a second opening, the first chamber has a first capillary structure and is filled with a working liquid, the first One and two openings penetrate one side of the body and communicate with the first chamber; and at least one tube body has a first end and a second end and a channel, and the first and second ends respectively plug into the aforementioned The first and second openings communicate with the first chamber through the first and second ends. The composite temperature equalizing plate structure according to claim 1, wherein a second capillary structure is further provided on the inner wall of the channel. The composite temperature-equalizing plate structure according to claim 1, wherein the system is formed by a corresponding cover of a first plate body and a second plate body, and the first chamber is formed by the first and second plates The body is jointly defined and formed, and the first and second openings pass through the second plate body. The composite temperature equalizing plate structure according to claim 1, further comprising at least a first flange and a second flange corresponding to the first and second openings, and the first and second ends of the tube body Corresponding to the first and second flanges. The composite temperature equalizing plate structure according to claim 1, wherein the first and second ends of the tube body further have a first extension portion and a second extension portion, respectively, and the first and second extension portions are extended and inserted In the first cavity of the body, the first and second extensions are selectively abutting or not abutting the bottom side of the first cavity. The composite temperature-equalizing plate structure according to claim 5, wherein the first and second extensions further define at least one first gap and at least one second gap, the first and second gaps and the first cavity respectively The rooms are connected. The composite temperature equalizing plate structure according to claim 1, wherein the body is a temperature equalizing plate or a hot plate. The composite temperature equalizing plate structure according to claim 1, wherein the tube system is a circular heat pipe or a flat heat pipe or a D-type heat pipe or a flat plate heat pipe. The composite temperature equalizing plate structure according to claim 1, wherein the tube body is in a "ㄩ" shape or a "U" shape when viewed from above. The composite temperature-equalizing plate structure according to claim 2, wherein the first and second capillary structures are selected as either powder sintered body or mesh body or fiber body or groove or braided body, the first 2. The second capillary structure can be selected as the same structure or different structures or composite capillary. The composite temperature equalizing plate structure according to claim 2, wherein the first and second capillary structures are formed by electrochemical deposition or electroforming or 3D printing or printing. The composite temperature-equalizing plate structure according to claim 1, further comprising a plating layer formed on the inner walls of the body and the pipe body. The composite temperature-equalizing plate structure according to claim 1, wherein the material of the body and the tube is selected from any one of copper, aluminum, iron, stainless steel, titanium, or titanium alloy. The body and the tube may be Use the same material or mix and match.

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