Three-dimensional heat transfer device
By configuring heat pipes of different shapes and numbers, airflow is guided to the main heat dissipation area, solving the problem of insufficient heat dissipation efficiency of three-dimensional heat transfer devices and achieving more efficient heat exchange and heat dissipation effects.
Patent Information
- Application Number
- CN202520192651.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-02-07
AI Technical Summary
Existing three-dimensional heat transfer devices have insufficient heat dissipation efficiency, especially as the fins are further away from the heat source, and the overall system space and airflow conditions limit the improvement of heat transfer efficiency.
By configuring heat pipes of different shapes and numbers, airflow is guided to the main heat dissipation area, and the cross-sectional differences of various heat pipes are used to guide airflow to high-temperature areas, thereby improving heat exchange efficiency.
It effectively improves the heat dissipation efficiency of the three-dimensional heat transfer device, especially the heat exchange effect in high-temperature areas, shortens the circulation path of the cooling fluid, and enhances the overall heat dissipation performance.
Smart Images
Figure CN223885508U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a heat transfer device, in particular to a three-dimensional heat transfer device. BACKGROUND
[0002] The technical principle of the vapor chamber is similar to that of the heat pipe, but there is a difference in the conduction mode. The heat pipe is one-dimensional linear heat conduction, while the heat in the vacuum cavity vapor chamber is conducted in a two-dimensional plane, so the efficiency is higher. Specifically, the vapor chamber mainly includes a cavity, and the cavity has a hollow chamber inside, and the hollow chamber is used to fill a working fluid. The heated part of the cavity is called the evaporation zone. The part of the cavity dissipating heat is called the condensation zone. The working fluid absorbs heat in the evaporation zone and expands rapidly throughout the cavity. In the condensation zone, the heat is released and condensed into a liquid state. Then the liquid working medium returns to the evaporation zone to form a cooling cycle.
[0003] Generally speaking, most of the vapor chambers and heat pipes are independent of each other, resulting in that, in terms of the vapor chamber or the heat pipe alone, it is only a plane or a straight line individual heat transfer, rather than a whole three-dimensional heat transfer, so that the heat dissipation effect has not been fully played. Currently, manufacturers have integrated the vapor chamber and the heat pipe to manufacture a three-dimensional heat transfer device. However, the heat transfer efficiency of the current three-dimensional heat transfer device is still insufficient, which is limited by the server height, the overall system space, and the wind flow conditions. In addition, the farther the fins are from the heat source, the lower the heat dissipation efficiency of the fins, which will also lead to insufficient heat transfer efficiency of the three-dimensional heat transfer device. That is, the more fins are not the better, but should focus on improving the heat dissipation efficiency of the fins. Therefore, how to further improve the heat dissipation efficiency of the three-dimensional heat transfer device is one of the problems that researchers should solve. SUMMARY
[0004] The utility model discloses a three-dimensional heat transfer device, through the configuration heat pipe's shape, quantity and position guide wind flow to main heat dissipation area to carry out efficient heat dissipation, and then can further improve the heat dissipation efficiency of the fin of three-dimensional heat transfer device.
[0005] The three-dimensional heat transfer device disclosed by an embodiment of the utility model is suitable for being thermally coupled to a heat source and includes a heat-conducting shell, at least one first heat pipe, and at least one second heat pipe. The heat-conducting shell has an airtight chamber and a thermal contact surface. The thermal contact surface faces away from the airtight chamber and is thermally coupled to the heat source. The at least one first heat pipe is arranged in the heat-conducting shell and communicates with the airtight chamber. The at least one second heat pipe is arranged in the heat-conducting shell and communicates with the airtight chamber. The cross section of the at least one first heat pipe relative to the heat-conducting shell is different from the cross section of the at least one heat pipe relative to the heat-conducting shell, so as to guide air flow to a main heat dissipation area of the corresponding thermal contact surface through the at least one first heat pipe and the at least one second heat pipe.
[0006] The three-dimensional heat transfer device, wherein the heat conductive shell comprises a first shell member and a second shell member, the second shell member is arranged on the first shell member so that the first shell member and the second shell member jointly form the air-tight chamber, the at least one first heat pipe and the at least one second heat pipe are connected to the second shell member of the heat conductive shell.
[0007] The three-dimensional heat transfer device, wherein the cross-sectional size of the at least one first heat pipe relative to the second shell member is different from the cross-sectional size of the at least one second heat pipe relative to the second shell member.
[0008] The three-dimensional heat transfer device, wherein the cross-sectional area of the at least one first heat pipe is less than or equal to 80% of the cross-sectional area of the at least one second heat pipe.
[0009] The three-dimensional heat transfer device, wherein the cross-sectional shape of the at least one first heat pipe relative to the second shell member is different from the cross-sectional shape of the at least one second heat pipe relative to the second shell member.
[0010] The three-dimensional heat transfer device, wherein the at least one first heat pipe and the at least one second heat pipe are both elliptical, and the flatness of the cross-section of the at least one first heat pipe is different from the flatness of the cross-section of the at least one second heat pipe.
[0011] The three-dimensional heat transfer device, wherein the cross-sectional shape of the at least one first heat pipe and the at least one second heat pipe is airfoil, ellipse or gear hobbing.
[0012] The three-dimensional heat transfer device, further comprising at least one third heat pipe arranged on the second shell member and communicating with the air-tight chamber, the cross-section of the at least one third heat pipe relative to the second shell member is different from the cross-section of the at least one first heat pipe relative to the second shell member and the cross-section of the at least one second heat pipe relative to the second shell member.
[0013] The three-dimensional heat transfer device, wherein the at least one third heat pipe is located in the main heat dissipation area corresponding to the heat contact surface, the number of the at least one first heat pipe and the at least one second heat pipe is plural, and the at least one first heat pipe and the at least one second heat pipe are respectively located on opposite sides of the at least one third heat pipe, and the second heat pipes located on the same side of the at least one third heat pipe are between the first heat pipes and the at least one third heat pipe.
[0014] The three-dimensional heat transfer device, wherein the flatness of the first heat pipes is greater than the flatness of the second heat pipes, and the flatness of the second heat pipes is greater than the flatness of the at least one third heat pipe.
[0015] The stereoscopic heat transfer device further comprises a plurality of fourth heat pipes and a plurality of fifth heat pipes, the number of the at least one third heat pipe is a plurality, the first heat pipes to the fifth heat pipes are sequentially arranged, and the sizes of the cross sections of the first heat pipes to the fifth heat pipes sequentially increase.
[0016] The utility model discloses still provide a kind of stereoscopic heat transfer device, wherein, it is suitable for heat coupling in a heat source, this stereoscopic heat transfer device includes:
[0017] A heat-conducting shell has an airtight chamber and a thermal contact surface, the thermal contact surface faces away from the airtight chamber and is thermally coupled to the heat source.
[0018] At least one first heat pipe is arranged in the heat-conducting shell and communicates with the airtight chamber.
[0019] At least one second heat pipe is arranged in the heat-conducting shell and communicates with the airtight chamber.
[0020] The cross section of the at least one first heat pipe relative to the heat-conducting shell is the same as the cross section of the at least one second heat pipe relative to the heat-conducting shell, so as to guide airflow to a main heat dissipation area through the at least one first heat pipe and the at least one second heat pipe.
[0021] The stereoscopic heat transfer device further comprises a first shell member and a second shell member, the second shell member is arranged in the first shell member, so that the first shell member and the second shell member jointly form the airtight chamber, and the at least one first heat pipe and the at least one second heat pipe are connected to the second shell member of the heat-conducting shell.
[0022] The at least one first heat pipe and the at least one second heat pipe are both elliptical, and the flatness of the cross section of the at least one first heat pipe is the same as the flatness of the cross section of the at least one second heat pipe.
[0023] The stereoscopic heat transfer device further comprises at least one third heat pipe arranged in the second shell member and communicating with the airtight chamber, the cross section of the at least one third heat pipe relative to the second shell member is the same as the cross section of the at least one first heat pipe relative to the second shell member and the cross section of the at least one second heat pipe relative to the second shell member.
[0024] The at least one third heat pipe is located in the main heat dissipation area corresponding to the thermal contact surface, the number of the at least one first heat pipe and the at least one second heat pipe is a plurality, and they are respectively located on opposite sides of the at least one third heat pipe, and the second heat pipes located on the same side of the at least one third heat pipe are between the first heat pipes and the at least one third heat pipe.
[0025] The stereoscopic heat transfer device, wherein the flatness of the first heat pipes, the flatness of the second heat pipes and the flatness of the at least one third heat pipe are the same.
[0026] The stereoscopic heat transfer device, wherein the stereoscopic heat transfer device further comprises a plurality of fourth heat pipes and a plurality of fifth heat pipes, the number of the at least one third heat pipe is plural, and the first heat pipes to the fifth heat pipes are arranged in sequence.
[0027] The stereoscopic heat transfer device, wherein the cross section of the at least one first heat pipe, the at least one second heat pipe and the at least one third heat pipe is in the shape of an airfoil, an ellipse, a circle or a gear hob.
[0028] The stereoscopic heat transfer device according to the above-mentioned embodiments, because the cross sections of the heat pipes relative to the heat conduction shell are different, and the air flow is guided by the heat pipes to the main heat dissipation area of the corresponding heat contact surface, so that the air flow can flow more efficiently through the area with higher temperature in the stereoscopic heat transfer device, thereby improving the efficiency of heat exchange. In this way, the heat dissipation efficiency of the stereoscopic heat transfer device can be improved.
[0029] The above description of the present application and the following description of the embodiments are used to demonstrate and explain the principles of the present application, and provide further explanation of the scope of the patent application of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0030] Figure 1 It is a stereoscopic schematic diagram of the stereoscopic heat transfer device according to the first embodiment of the present application.
[0031] Figure 2 It is a stereoscopic schematic diagram of the stereoscopic heat transfer device according to the first embodiment of the present application. Figure 1
[0032] Figure 3 It is a sectional view schematic diagram of the heat pipe of the stereoscopic heat transfer device according to the first embodiment of the present application. Figure 1
[0033] Figure 4 It is a stereoscopic schematic diagram of the stereoscopic heat transfer device according to the second embodiment of the present application.
[0034] Figure 5 It is a sectional view schematic diagram of the heat pipe of the stereoscopic heat transfer device according to the second embodiment of the present application. Figure 4
[0035] Figure 6 It is a stereoscopic schematic diagram of the stereoscopic heat transfer device according to the third embodiment of the present application.
[0036] Figure 7 It is a sectional view schematic diagram of the heat pipe of the stereoscopic heat transfer device according to the third embodiment of the present application. Figure 6
[0037] Figure 8 Fig. 1 is a perspective view of a heat pipe of a three-dimensional heat transfer device according to a first embodiment of the present application.
[0038] Figure 9 Fig. 1 is a perspective view of a heat pipe of a three-dimensional heat transfer device according to a first embodiment of the present application. Figure 8 Fig. 1 is a perspective view of a heat pipe of a three-dimensional heat transfer device according to a first embodiment of the present application.
[0039] In the drawings:
[0040] 10, 10A, 10D, 10E: three-dimensional heat transfer device
[0041] 11: heat conducting shell
[0042] 111: first shell member
[0043] 112: second shell member
[0044] 113: thermal contact surface
[0045] 12, 12A, 12D, 12E: first heat pipe
[0046] 121, 121A, 121D, 121E: cross section
[0047] 13, 13A, 13D, 13E: second heat pipe
[0048] 131, 131A, 131D, 131E: cross section
[0049] 14, 14A, 14D, 14E: third heat pipe
[0050] 141, 141A, 141D, 141E: cross section
[0051] 15D: fourth heat pipe
[0052] 151D: cross section
[0053] 16D: fifth heat pipe
[0054] 161D: cross section
[0055] M: main heat dissipation area
[0056] S: air-tight chamber
[0057] R1, R2, R3: major axis
[0058] r1, r2, r3: minor axis DETAILED DESCRIPTION
[0059] Reference will now be made to Figures 1 to 3 . Figure 1 Fig. 1 is a perspective view of a heat pipe of a three-dimensional heat transfer device according to a first embodiment of the present application. Figure 2 Fig. 1 is a perspective view of a heat pipe of a three-dimensional heat transfer device according to a first embodiment of the present application. Figure 1exploded view of a stereoscopic heat transfer device. Figure 3 for Figure 1 cross-sectional view of a heat pipe of a stereoscopic heat transfer device.
[0060] The stereoscopic heat transfer device 10 of the present embodiment is adapted to be thermally coupled to a heat source (not shown). By thermal coupling is meant thermal contact or connection through another thermally conductive medium. The stereoscopic heat transfer device 10 includes a thermally conductive housing 11, a plurality of first heat pipes 12, a plurality of second heat pipes 13, and a third heat pipe 14. The thermally conductive housing 11 includes a first housing member 111 and a second housing member 112. The second housing member 112 is fitted to the first housing member 111 so that the first housing member 111 and the second housing member 112 together form a gas-tight chamber S. In addition, the thermally conductive housing 11 has a thermal contact surface 113. The thermal contact surface 113 faces away from the gas-tight chamber S and is adapted to be thermally coupled to the heat source.
[0061] The first heat pipes 12, the second heat pipes 13, and the third heat pipe 14 are, for example, arranged in parallel to the second housing member 112 and communicate with the gas-tight chamber S. The first heat pipes 12 and the second heat pipes 13 are respectively located on opposite sides of the third heat pipe 14, and the second heat pipes 13 located on the same side of the third heat pipe 14 are interposed between the first heat pipes 12 and the third heat pipe 14.
[0062] The cross sections 121 of the first heat pipes 12 with respect to the second housing member 112, the cross sections 131 of the second heat pipes 13 with respect to the second housing member 112, and the cross section 141 of the third heat pipe 14 with respect to the second housing member 112 are, for example, different. For example, the shapes of the cross sections 121 of the first heat pipes 12 and the shapes of the cross sections 131 of the second heat pipes 13 are elliptical, and the shape of the cross section 141 of the third heat pipe 14 is circular.
[0063] Each of the cross sections 121 of the first heat pipes 12, each of the cross sections 131 of the second heat pipes 13, and the cross section 141 of the third heat pipe 14 has a major axis R1, R2, R3 and a minor axis r1, r2, r3. For example, the ratio of the major axis R1 to the minor axis r1 in each of the cross sections 121 of the first heat pipes 12 is greater than the ratio of the major axis R2 to the minor axis r2 in each of the cross sections 131 of the second heat pipes 13, and the ratio of the major axis R2 to the minor axis r2 in each of the cross sections 131 of the second heat pipes 13 is greater than the ratio of the major axis R3 to the minor axis r3 in the cross section 141 of the third heat pipe 14. That is, the degree of flatness of the cross sections 121 of the first heat pipes 12 is, for example, greater than the degree of flatness of the cross sections 131 of the second heat pipes 13, and the degree of flatness of the cross sections 131 of the second heat pipes 13 is, for example, greater than the degree of flatness of the cross section 141 of the third heat pipe 14.
[0064] The air flow can be guided by the first heat pipes 12, the second heat pipes 13 and the third heat pipe 14 to a main heat dissipation area M, for example, corresponding to the heat contact surface 113. The so-called corresponding means that the main heat dissipation area M is located within the range of the heat contact surface 113 projected to the second shell 112. The main heat dissipation area M, for example, corresponds to the region with higher temperature of the heat source, and the third heat pipe 14 is located in the main heat dissipation area M to dissipate heat for the main heat dissipation area M.
[0065] In the embodiment, the flatness of the cross section 121 of the first heat pipe 12, the flatness of the cross section 131 of the second heat pipe 13 and the flatness of the cross section 141 of the third heat pipe 14 are different. The advantage of the difference in the shape of the heat pipes 12-14 is that the direction of the air flow (not shown) flowing through the heat pipes 12-14 can be changed. For example, when the air flow flows through the main heat dissipation area M, a turbulent air flow direction is easily generated to improve the efficiency of heat exchange. In this way, the heat dissipation efficiency of the three-dimensional heat transfer device 10 can be improved.
[0066] In the embodiment, the three-dimensional heat transfer device 10 can also include a plurality of fins (not shown). The fins, for example, are arranged along the extension direction of the heat pipes 12, 13 and 14, but are not limited thereto. By providing the fins and by the shape, number and position of the heat pipes 12, 13 and 14 to guide the air flow to the main heat dissipation area M, the heat source can be effectively dissipated. In this way, the heat dissipation efficiency of the fins of the three-dimensional heat transfer device 10 can be further improved.
[0067] In the embodiment, the number of the first heat pipes 12 and the number of the second heat pipes 13 are multiple, and the number of the third heat pipe 14 is only single, but not limited thereto. In other embodiments, the number of the first heat pipes and the number of the second heat pipes can also be only single, and the number of the third heat pipes can also be multiple.
[0068] In the embodiment, the shape of the cross section 121 of the first heat pipe 12 and the shape of the cross section 131 of the second heat pipe 13 are elliptical, and the shape of the cross section 141 of the third heat pipe 14 is circular, but not limited thereto. In other embodiments, the shape of the cross section of the first heat pipe, the shape of the cross section of the second heat pipe and the shape of the cross section of the third heat pipe can also be airfoils or hobbing.
[0069] In the embodiment, the main heat dissipation area M corresponds to the heat contact surface 113, but not limited thereto. In other embodiments, the main heat dissipation area can also not correspond to the heat contact surface.
[0070] In the first embodiment, the cross sections 121 of the first heat pipes 12 relative to the second housing 112, the cross sections 131 of the second heat pipes 13 relative to the second housing 112, and the cross section 141 of the third heat pipe 14 relative to the second housing 112 are different, but are not limited thereto. In other embodiments, please refer to Figure 4 With Figure 5 . Figure 4 A perspective view of a three-dimensional heat transfer device according to a second embodiment of the present application. Figure 5 As Figure 4 a cross-sectional view of a heat pipe of the three-dimensional heat transfer device.
[0071] The three-dimensional heat transfer device 10A of the present embodiment is similar to the three-dimensional heat transfer device 10 of the first embodiment, and thus the differences between the present embodiment and the first embodiment will be described below, and the same parts will not be described again. In the present embodiment, the three-dimensional heat transfer device 10A includes a heat-conducting housing 11, a plurality of first heat pipes 12A, a plurality of second heat pipes 13A, and a third heat pipe 14A. The heat-conducting housing 11 includes a first housing 111 and a second housing 112. The second housing 112 is arranged on the first housing 111.
[0072] The first heat pipes 12A, the second heat pipes 13A, and the third heat pipe 14A are arranged on the second housing 112. The first heat pipes 12A and the second heat pipes 13A are respectively located on opposite sides of the third heat pipe 14A, and the second heat pipes 13A located on the same side of the third heat pipe 14A are interposed between the first heat pipes 12A and the third heat pipe 14A.
[0073] The cross sections 121A of the first heat pipes 12A relative to the second housing 112, the cross sections 131A of the second heat pipes 13A relative to the second housing 112, and the cross section 141A of the third heat pipe 14A relative to the second housing 112 are, for example, the same. For example, the shapes of the cross sections 121A of the first heat pipes 12A, the shapes of the cross sections 131A of the second heat pipes 13A, and the shape of the cross section 141A of the third heat pipe 14A are, for example, airfoils.
[0074] In the present embodiment, the shapes of the cross sections 121A of the first heat pipes 12A, the shapes of the cross sections 131A of the second heat pipes 13A, and the shape of the cross section 141A of the third heat pipe 14A are airfoils, which is advantageous in that when the airflow flows through the main heat dissipation area M, the heat exchange efficiency can be more effectively improved by the airfoil-shaped heat pipes 12A-14A. In this way, the heat dissipation efficiency of the three-dimensional heat transfer device 10A can be improved.
[0075] The air flow can be guided to a main heat dissipation area M of the corresponding heat contact surface 113 by the first heat pipes 12A, the second heat pipes 13A and the third heat pipes 14A. The main heat dissipation area M is, for example, a region with a higher temperature among the corresponding heat sources, and the third heat pipes 14A are located in the main heat dissipation area M to dissipate heat for the main heat dissipation area M.
[0076] Please refer to Figure 6 and Figure 7 . Figure 6 A schematic diagram of a three-dimensional heat transfer device according to a third embodiment of the present application. Figure 7 A schematic diagram of a cross section of a heat pipe of the three-dimensional heat transfer device. Figure 6
[0077] The three-dimensional heat transfer device 10D of the present embodiment is similar to the three-dimensional heat transfer device 10 of the first embodiment, and thus the differences between the present embodiment and the first embodiment will be described below, and the same parts will not be described again. In the present embodiment, the three-dimensional heat transfer device 10D includes a heat-conductive housing 11, a plurality of first heat pipes 12D, a plurality of second heat pipes 13D, a plurality of third heat pipes 14D, a plurality of fourth heat pipes 15D and a plurality of fifth heat pipes 16D. The heat-conductive housing 11 includes a first housing member 111 and a second housing member 112. The second housing member 112 is arranged on the first housing member 111.
[0078] The first heat pipes 12D to the fifth heat pipes 16D are arranged on the second housing member 112 in order. The sizes of the cross sections 121D of the first heat pipes 12D with respect to the second housing member 112 to the sizes of the cross sections 161D of the fifth heat pipes 16D with respect to the second housing member 112 are, for example, different.
[0079] For example, the cross sections 121D of the first heat pipes 12 to the cross sections 161D of the fifth heat pipes 16 gradually increase in order, and the cross-sectional area of the cross section 121D of the first heat pipes 12 is, for example, equal to or less than 20% of the cross-sectional area of the cross section 131D of the second heat pipes 13, the cross-sectional area of the cross section 131D of the second heat pipes 13 is, for example, equal to or less than 80% of the cross-sectional area of the cross section 141D of the third heat pipes 14, the cross-sectional area of the cross section 141D of the third heat pipes 14 is, for example, equal to or less than 80% of the cross-sectional area of the cross section 151D of the fourth heat pipes 15, and the cross-sectional area of the cross section 151D of the fourth heat pipes 15 is, for example, equal to or less than 80% of the cross-sectional area of the cross section 161D of the fifth heat pipes 16. In this way, the heat dissipation efficiency of the three-dimensional heat transfer device 10D can be improved.
[0080] The air flow can be guided by the first heat pipes 12D to the fifth heat pipes 16D to a main heat dissipation area M of the corresponding heat contact surface 113. The main heat dissipation area M is, for example, a region of the corresponding heat source with a higher temperature, and part of the third heat pipes 14D is located in the main heat dissipation area M to dissipate heat for the main heat dissipation area M.
[0081] In the present embodiment, the cross sections of the first heat pipes 12D to the fifth heat pipes 16D gradually increase in sequence, but this is not limited. In other embodiments, the cross sections of the first heat pipes to the fifth heat pipes can also increase from the opposite ends of the second shell piece towards the center of the second shell piece.
[0082] In the first embodiment, the cross sections 121 of the first heat pipes 12 relative to the second shell piece 112, the cross sections 131 of the second heat pipes 13 relative to the second shell piece 112, and the cross sections 141 of the third heat pipes 14 relative to the second shell piece 112 are different, but this is not limited. In other embodiments, please refer to Figure 8 and Figure 9 . Figure 8 A schematic perspective view of a three-dimensional heat transfer device according to a fourth embodiment of the present application. Figure 9 A schematic perspective view of a three-dimensional heat transfer device according to a fourth embodiment of the present application. Figure 8 A schematic cross-sectional view of a heat pipe of a three-dimensional heat transfer device according to a fourth embodiment of the present application.
[0083] The three-dimensional heat transfer device 10E of the present embodiment is similar to the three-dimensional heat transfer device 10 of the first embodiment, and therefore the differences between the present embodiment and the first embodiment will be described below, and the same parts will not be described again. In the present embodiment, the three-dimensional heat transfer device 10E includes a heat-conducting shell 11, a plurality of first heat pipes 12E, a plurality of second heat pipes 13E, and a third heat pipe 14E. The heat-conducting shell 11 includes a first shell piece 111 and a second shell piece 112. The second shell piece 112 is arranged on the first shell piece 111.
[0084] The first heat pipes 12E, the second heat pipes 13E, and the third heat pipe 14E are arranged on the second shell piece 112. The first heat pipes 12E and the second heat pipes 13E are respectively located on opposite sides of the third heat pipe 14E, and the second heat pipes 13E located on the same side of the third heat pipe 14E are interposed between the first heat pipes 12E and the third heat pipe 14E.
[0085] The cross sections 121E of the first heat pipes 12E relative to the second shell piece 112, the cross sections 131E of the second heat pipes 13E relative to the second shell piece 112, and the cross sections 141E of the third heat pipe 14E relative to the second shell piece 112 are, for example, the same. For example, the shapes of the cross sections 121E of the first heat pipes 12E, the shapes of the cross sections 131E of the second heat pipes 13E, and the shapes of the cross sections 141E of the third heat pipe 14E are, for example, circular.
[0086] The air flow is guided by the first heat pipes 12E, the second heat pipes 13E and the third heat pipes 14E to a main heat dissipation area M of the corresponding heat contact surface 113. The main heat dissipation area M is, for example, a region with higher temperature among the heat sources, and some of the third heat pipes 14E are located in the main heat dissipation area M to dissipate heat for the main heat dissipation area M.
[0087] In addition, since the second heat pipes 13E and the third heat pipes 14E are densely arranged in the main heat dissipation area M and around the main heat dissipation area M, that is, the heat pipes in the region with higher temperature in the three-dimensional heat transfer device 10E are arranged with higher density, the cooling fluid can be in heat exchange with the heat pipes in the region with higher temperature in the air-tight chamber S and densely, and the cooling fluid flowing to the region with lower temperature for heat exchange is reduced, so as to shorten the cooling circulation path of the cooling fluid (not shown) in the three-dimensional heat transfer device 10E, and thus the heat dissipation efficiency of the three-dimensional heat transfer device 10E can be improved.
[0088] According to the three-dimensional heat transfer device of the above-mentioned embodiments, since the cross sections of the heat pipes relative to the heat-conducting shell are different, and the air flow is guided by the heat pipes to the main heat dissipation area of the corresponding heat contact surface, the air flow can flow through the region with higher temperature in the three-dimensional heat transfer device more efficiently, and thus the heat exchange efficiency is improved. In this way, the heat dissipation efficiency of the three-dimensional heat transfer device can be improved.
[0089] Although the utility model has been disclosed as above with the above-mentioned embodiments, it is not used to limit the utility model, and any person skilled in the relevant art can make some changes and decorations without departing from the spirit and scope of the utility model, and thus the patent protection scope of the utility model should be defined by the protection scope of the claims attached to the present application.
Claims
1. A three-dimensional heat transfer device, characterized by, A three-dimensional heat transfer device adapted to be thermally coupled to a heat source, the three-dimensional heat transfer device comprising: a thermally conductive shell having a gas-tight chamber and a thermal contact surface opposite to the gas-tight chamber and thermally coupled to the heat source; at least one first heat pipe disposed in the thermally conductive shell and communicating with the gas-tight chamber; and at least one second heat pipe disposed in the thermally conductive shell and communicating with the gas-tight chamber; wherein a cross-sectional area of the at least one first heat pipe relative to the thermally conductive shell is different from a cross-sectional area of the at least one second heat pipe relative to the thermally conductive shell, so as to direct airflow through the at least one first heat pipe and the at least one second heat pipe to a main heat dissipation zone.
2. The three-dimensional heat transfer device of claim 1, wherein The thermally conductive shell comprises a first shell member and a second shell member, the second shell member is arranged on the first shell member so that the first shell member and the second shell member jointly form the gas-tight chamber, the at least one first heat pipe and the at least one second heat pipe are connected to the second shell member of the thermally conductive shell.
3. The three-dimensional heat transfer device of claim 2, wherein A size of a cross-section of the at least one first heat pipe relative to the second shell member is different from a size of a cross-section of the at least one second heat pipe relative to the second shell member.
4. The three-dimensional heat transfer device of claim 3, wherein A cross-sectional area of the at least one first heat pipe is less than or equal to 80% of a cross-sectional area of the at least one second heat pipe.
5. The three-dimensional heat transfer device of claim 2, wherein A shape of a cross-section of the at least one first heat pipe relative to the second shell member is different from a shape of a cross-section of the at least one second heat pipe relative to the second shell member.
6. The three-dimensional heat transfer device of claim 5, wherein The at least one first heat pipe and the at least one second heat pipe are both elliptical, and a flatness of a cross-section of the at least one first heat pipe is different from a flatness of a cross-section of the at least one second heat pipe.
7. The three-dimensional heat transfer device of claim 5, wherein The at least one first heat pipe and the at least one second heat pipe have a cross-sectional shape of an airfoil, an ellipse, or a gear hob.
8. The three-dimensional heat transfer device of claim 2, wherein Further comprising at least one third heat pipe disposed in the second shell member and communicating with the gas-tight chamber, a cross-section of the at least one third heat pipe relative to the second shell member is different from a cross-section of the at least one first heat pipe relative to the second shell member and a cross-section of the at least one second heat pipe relative to the second shell member.
9. The three-dimensional heat transfer device of claim 8, wherein The at least one third heat pipe is located in the main heat dissipation zone corresponding to the thermal contact surface, the at least one first heat pipe and the at least one second heat pipe are multiple in number and are respectively located on opposite sides of the at least one third heat pipe, and the second heat pipes located on the same side of the at least one third heat pipe are interposed between the first heat pipes and the at least one third heat pipe.
10. The three-dimensional heat transfer device of claim 9, wherein The flatness of the first heat pipes is greater than the flatness of the second heat pipes, and the flatness of the second heat pipes is greater than the flatness of the at least one third heat pipe.
11. The three-dimensional heat transfer device of claim 9, wherein Further comprising multiple fourth heat pipes and multiple fifth heat pipes, the at least one third heat pipe is multiple in number, the first heat pipes to the fifth heat pipes are sequentially arranged, and the sizes of the cross-sections of the first heat pipes to the fifth heat pipes sequentially increase.
12. A stereoscopic heat transfer device, characterized by, A three-dimensional heat transfer device adapted to be thermally coupled to a heat source, the three-dimensional heat transfer device comprising: a thermally conductive shell having a gas-tight chamber and a thermal contact surface opposite to the gas-tight chamber and thermally coupled to the heat source; at least one first heat pipe disposed in the thermally conductive shell and communicating with the gas-tight chamber; and at least one second heat pipe disposed in the thermally conductive shell and communicating with the gas-tight chamber; The cross section of the at least one first heat pipe relative to the heat conducting shell is the same as the cross section of the at least one second heat pipe relative to the heat conducting shell, so as to guide air flow to a main heat dissipation area through the at least one first heat pipe and the at least one second heat pipe.
13. The three-dimensional heat transfer device of claim 12, wherein, The heat conducting shell comprises a first shell member and a second shell member, the second shell member is arranged on the first shell member, so that the first shell member and the second shell member jointly form the air-tight chamber, the at least one first heat pipe and the at least one second heat pipe are connected to the second shell member of the heat conducting shell.
14. The three-dimensional heat transfer device of claim 12, wherein, The at least one first heat pipe and the at least one second heat pipe are both elliptical, and the flatness of the cross section of the at least one first heat pipe is the same as the flatness of the cross section of the at least one second heat pipe.
15. The three-dimensional heat transfer device of claim 13, wherein, Further comprising at least one third heat pipe arranged on the second shell member and communicating with the air-tight chamber, the cross section of the at least one third heat pipe relative to the second shell member is the same as the cross section of the at least one first heat pipe relative to the second shell member and the cross section of the at least one second heat pipe relative to the second shell member.
16. The three-dimensional heat transfer device of claim 15, wherein, The at least one third heat pipe is located in the main heat dissipation area corresponding to the heat contact surface, the number of the at least one first heat pipe and the at least one second heat pipe is multiple, and they are respectively located on opposite sides of the at least one third heat pipe, and the second heat pipes located on the same side of the at least one third heat pipe are between the first heat pipes and the at least one third heat pipe.
17. The three-dimensional heat transfer device of claim 15, wherein, The flatness of the first heat pipes, the flatness of the second heat pipes and the flatness of the at least one third heat pipe are the same.
18. The three-dimensional heat transfer device of claim 15, wherein, Further comprising multiple fourth heat pipes and multiple fifth heat pipes, the number of the at least one third heat pipe is multiple, and the first heat pipes to the fifth heat pipes are sequentially arranged.
19. The three-dimensional heat transfer device of claim 15, wherein, The shape of the cross section of the at least one first heat pipe, the at least one second heat pipe and the at least one third heat pipe is wing, ellipse, circle or gear hobbing.