TWI738267B - A dual heat transfer structure - Google Patents

Abstract

A dual heat transfer structure, comprising: at least a heat pipe and at least a vapor chamber; the heat pipe having a first end, an extension portion, and a second end, the first and second ends disposed at the two ends of the extension portion; the vapor chamber being concavely bent with its two ends being joined together and selectively compasses, encircles, encloses, or surrounds one of the first and second ends and extension portion. The dual heat transfer structure of the present invention is a complex structure that can both transfer heat with a large area and to the distal end of the structure.

Description

Compound heat dissipation structure

A composite heat dissipation structure, in particular, refers to a composite heat dissipation structure that integrates large-area heat absorption and axial distal heat transfer and heat dissipation composite heat transfer effects.

The uniform temperature plate and the heat pipe system are common heat transfer elements. The uniform temperature plate is a large-area surface-to-surface heat conduction method for rapid temperature diffusion. It is mainly through contact with the heat source through one side and a heat dissipation element on the other side. Such as radiating fins, whereby the heat generated by the heat source is transferred to the radiating fins and then through heat exchange with the air to dissipate heat.

The working principle of the heat pipe is roughly the same as that of the uniform temperature plate. The same is the work of conducting heat through the heat exchange of the two-phase flow. The difference between the heat pipe and the uniform temperature plate is that the heat pipe belongs to a kind of axial heat conduction. The heat transfer from one end of the heat pipe to the other end is a remote heat conduction method.

The current industry has combined the heat equalizing plate with the heat pipe to achieve the effect of large area and remote heat conduction at the same time. The most common method is to coat the heat pipe in the airtight chamber of the equalizing plate or the airtight cavity of the heat pipe. The chamber is connected with the airtight chamber of the uniform temperature plate, thereby achieving the effect of combining the uniform temperature plate and the heat pipe.

The above-mentioned conventional method of combining the temperature equalizing plate and the heat pipe is cumbersome in the manufacturing process, and the vacuum degree is not easy to control, and it is easy to produce defective products due to the loss of vacuum. Insert one end of a heat pipe into the chamber of the uniform temperature plate. The vacuum is not easy to control, and the vacuum is easy to leak. The chamber of the uniform temperature plate also has a serious impact on the heat transfer efficiency due to the insufficiency of the two changes of gas and liquid caused by the insertion of the heat pipe, and its function and type need to be customized and therefore cannot be universal, causing great inconvenience and trouble in use. Therefore, how to improve the deficiencies caused by the conventional technology is the primary improvement goal of the current industry.

Therefore, in order to effectively solve the above-mentioned problems, the main purpose of the present invention is to provide a composite heat dissipation structure that simultaneously integrates the large-area heat conduction of the uniform temperature plate and the axial distal end heat conduction of the heat pipe.

To achieve the above objective, the present invention provides a composite heat dissipation structure, which includes: at least one heat pipe, at least one temperature equalizing plate; the heat pipe has a first end, an extension portion and a second end, the first One and two ends are provided at both ends of the extension; the temperature equalizing plate is curled in a ring shape to selectively wrap or snare or loop or surround any one of the first and second ends and the extension, and uniform temperature The two ends of the board are connected (connected) around.

The composite heat dissipation structure of the present invention can solve the problem of poor vacuum air tightness in the conventional manufacturing technology, and simultaneously obtain the characteristics of uniform temperature of both the temperature equalization plate and the heat pipe and the characteristics of remote heat conduction.

1: Heat pipe

1a: The first heat pipe

1b: second heat pipe

1c: third heat pipe

1d: Fourth heat pipe

11: first end

12: Extension

13: second end

14: Vacuum chamber

15: Capillary layer

16: working fluid

2: Homogeneous temperature board

2a: first side

2b: second side

2c: Heat absorption part

21: Airtight chamber

22: Capillary structure

23: working fluid

24: Lips

3: heat source

4: cooling fins

5: The first radiator

51: cooling fins

6: Second radiator

Figure 1 is a perspective exploded view of the first embodiment of the composite heat dissipation structure of the present invention; Figure 2 is a combined cross-sectional view of the first embodiment of the composite heat dissipation structure of the present invention; Figure 3 is the composite heat dissipation structure of the present invention 3D exploded view of the second embodiment of the integrated heat dissipation structure; Figure 4 is a three-dimensional assembly view of the third embodiment of the composite heat dissipation structure of the present invention; Figure 5 is the fourth embodiment of the composite heat dissipation structure of the present invention Combined cross-sectional view; Figure 6 is a perspective view of the fifth embodiment of the composite heat dissipation structure of the present invention; Figure 7 is a schematic diagram of the sixth embodiment of the composite heat dissipation structure of the present invention; Figure 8 is the composite heat dissipation structure of the present invention A schematic diagram of a seventh embodiment of a type heat dissipation structure.

The above-mentioned objects and 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 and 2, which are three-dimensional exploded and combined cross-sectional views of the first embodiment of the composite heat dissipation structure of the present invention. As shown in the figure, the composite heat dissipation structure includes: at least one heat pipe 1, at least one The heat equalizing plate 2; the heat pipe 1 has a first end 11 and an extension portion 12 and a second end 13, the first and second ends 11, 13 are provided at both ends of the extension portion 12, the heat pipe 1 has a vacuum chamber 14, and the vacuum chamber 14 is independently arranged and provided with at least one capillary layer 15 and a working fluid 16.

The temperature equalizing plate 2 is curled in a ring shape to selectively wrap or snare or ring or surround any one of the first and second ends 11, 13 and the extension 12, and the two ends of the equalizing plate 2 are circumferentially connected ( Convergence).

The temperature equalizing plate 2 has an airtight chamber 21 filled with a working fluid 23, and the inner wall of the chamber 21 is provided with at least one capillary structure 22, the upper and lower parts of the temperature equalizing plate 2 The outer side surface has a first side 2a and a second side 2b. The airtight chamber 21 has a lip 24 on the outer edge. The two sides 2b are located on the inner surface of the uniform temperature plate 2 after curling, the second side 2b is attached to the outer peripheral surface of the heat pipe 1, and the first side 2a is in contact with a heat source 3 to conduct heat.

Please refer to Figure 3, which is a perspective exploded view of the second embodiment of the composite heat dissipation structure of the present invention. As shown in the figure, part of the structure of this embodiment is the same as that of the foregoing first embodiment, so it will not be repeated here, but The difference between this embodiment and the aforementioned first embodiment is that the first side 2a of the uniform temperature plate 2 is provided with at least one heat absorbing portion 2c and at least one heat source 3 to contact and conduct heat sources, or the first side 2a is provided with multiple The heat absorption part 2c is not limited to being in contact with a plurality of heat sources 3 to conduct heat at the same time.

In addition, the remaining parts of the heat absorption portion 2c of the first side 2a of the uniform temperature plate 2 that are not in contact with the heat source 3 are provided with a plurality of heat dissipation fins 4, which can improve the heat dissipation performance; the second side 2b is covered or trapped or It is arranged around or attached to the outer edge of the heat pipe 1 and is attached to at least a part of the heat pipe 1 to conduct heat conduction.

Please refer to FIG. 4, which is a three-dimensional assembly diagram of the third embodiment of the composite heat dissipation structure of the present invention. As shown in the figure, part of the structure of this embodiment is the same as that of the foregoing first embodiment, so it will not be repeated here. The difference between this embodiment and the aforementioned first embodiment is that this embodiment has a first heat pipe 1a, a second heat pipe 1b, a third heat pipe 1c, and a fourth heat pipe 1d. The four heat pipes 1a, 1b, 1c, and 1d are horizontally arranged side by side (or they can be stacked vertically with each other), and the uniform temperature plate 2 is simultaneously covered or trapped or ringed or surrounded by the first, second, third, and fourth heat pipes 1a, 1b, 1c, 1d outer edges, the first, second, third, and fourth heat pipes 1a, 1b, 1c, 1d are in flat shape (or other geometric shapes) at one end in contact with the uniform temperature plate 2. In addition, the first, second, third, and fourth heat pipes The one, two, three, and four heat pipes 1a, 1b, 1c, 1d are not in contact with the temperature equalizing plate 2 at the other end extending in series with a plurality of radiating fins 4, so that heat can be quickly conducted to the distal end for heat dissipation.

Please refer to Figure 5, which is a three-dimensional combined cross-sectional view of the fourth embodiment of the composite heat dissipation structure of the present invention. As shown in the figure, part of the structure of this embodiment is the same as that of the foregoing first embodiment, so it will not be repeated here. The difference between this embodiment and the aforementioned first embodiment is that the temperature equalizing plate 2 of this embodiment is in the shape of a flat plate curled tube. The capillary structure 22 is also connected, so that the vapor-liquid circulation of the temperature equalizing plate 2 is annularly diffused.

Please refer to Figure 6, which is a three-dimensional assembly view of the fifth embodiment of the composite heat dissipation structure of the present invention. As shown in the figure, part of the structure of this embodiment is the same as that of the foregoing first embodiment, so it will not be repeated here. The difference between this embodiment and the foregoing first embodiment is that the heat pipe 1 in this embodiment is a flat-plate heat pipe, and the uniform temperature plate 2 is wrapped around the outer edge of one end of the heat pipe 1. The other end is connected in series with multiple heat sinks Fins or a radiator or a water-cooling module or a water drain. This embodiment uses the heat dissipation fin 4 as an illustrative embodiment and is not limited to it, so as to quickly take the heat away to the far end for heat dissipation.

Please refer to Figure 7, which is a schematic diagram of the sixth embodiment of the composite heat dissipation structure of the present invention. As shown in the figure, part of the structure of this embodiment is the same as that of the foregoing first embodiment, so it will not be repeated here, but this embodiment The difference between this example and the aforementioned first embodiment is that there is a first radiator 5 between the temperature equalizing plate 2 and the heat pipe 1 in this embodiment, and the inner edge of the equalizing plate 2 simultaneously covers the first heat sink. On the side of the heat sink 5 and the heat pipe 1, the first heat sink 5 has a combination of a plurality of heat dissipation fins 51.

In this embodiment, after a ring-shaped body is arranged around the temperature equalizing plate 2 and at the same time, a plurality of heat pipes 1 and the first radiator 5 (fins) are arranged horizontally on the inner edge of the equalizing plate 2 curled into the ring body, and The first radiator 5 is stacked above the heat pipes 1, and the heat pipes 1 and the first radiator 5 are wrapped by the heat equalizing plate 2 at the same time.

Please refer to Figure 8, which is a schematic diagram of the seventh embodiment of the composite heat dissipation structure of the present invention. As shown in the figure, part of the structure of this embodiment is the same as that of the aforementioned sixth embodiment, so it will not be repeated here, but this embodiment The difference between this example and the aforementioned sixth embodiment is that a second heat sink 6 (fin) is additionally provided on one side of the outer edge surface of the temperature equalizing plate 2 in this embodiment.

The first and second ends 11, 13 of the heat pipe 1 in the foregoing embodiments are flat, elliptical, or square, so that they can be easily attached to the temperature equalizing plate 2 or the heat dissipation element to provide a larger gap between the two The contact area, and the rest of the heat pipe 1, that is, the extension part, can be of any shape or the tube diameter is larger than the tube diameter of the first and second ends 11, 13 to increase the efficiency of vapor-liquid circulation and diffusion, and in each embodiment The capillary structure 22 or the capillary layer 15 can be a sintered powder or a mesh body or a woven body or a fiber body or a groove, and are arranged in a single-layer or multi-layer or integrated state. Layers are expressed but not limited.

The design of the present invention that the uniform temperature plate is wrapped or looped or surrounded or combined with the heat pipe can provide a large area and remote heat conduction effect at the same time. Depend on The uniform temperature plate contacts with a single or multiple heat sources to absorb heat, and then the uniform temperature plate transfers the heat to the surface of one end of the heat pipe in a large area or at the same time to the radiator, and absorbs the heat transferred by the uniform temperature plate. The radiator (fin) transfers the heat to the other end of the far end for remote heat conduction to bring the heat to the far end for heat dissipation, and the radiator (fin) instantly dissipates heat to prevent heat accumulation, thereby greatly improving the heat dissipation efficiency. .

1: Heat pipe

11: first end

12: Extension

13: second end

2: Homogeneous temperature board

2a: first side

2b: second side

24: Lips

Claims (11)

A composite heat dissipation structure includes: at least one heat pipe with a first end, an extension part and a second end, the first and second ends are arranged at both ends of the extension part; at least one temperature equalizing plate, A ring-shaped crimp is selectively wrapped on any one of the aforementioned first and second ends and the extension, and the two ends of the temperature equalizing plate are circumferentially connected. The composite heat dissipation structure according to claim 1, wherein the temperature equalizing plate has an airtight chamber, the wall surface is provided with a capillary structure, and the inside of the airtight chamber is filled with a working fluid, the temperature equalizing plate, The bottom has a first side and a second side. The outer edge of the airtight chamber has a lip. After the temperature equalizing plate is curled, the lips of the two ends are connected to each other. The second side is located where the temperature equalizing plate is curled. Inside, the second side is attached to the outer edge of the heat pipe. The composite heat dissipation structure according to claim 2, wherein the first side of the uniform temperature plate is a heat absorption side that contacts at least one heat source to conduct the heat source, and the second side is a heat dissipation side and can conduct heat at the same time Conduct heat conduction to the attached heat pipe, and the remaining parts of the first side that are not in contact with the heat source are provided with a plurality of radiating fins. The composite heat dissipation structure described in claim 1, wherein there is a first heat pipe, a second heat pipe, and a third heat pipe. At the same time, the outer edges of the first, second, and third heat pipes are covered, and one end of the first, second, and third heat pipes in contact with the uniform temperature plate is flat. The composite heat dissipation structure according to claim 1, wherein the temperature equalizing plate has an airtight chamber, the wall surface is provided with a capillary structure, and the inside of the airtight chamber is filled with a working fluid, and the temperature equalizing plate is a The flat plate is crimped and tubular, and the two ends of the temperature equalizing plate are connected, that is, the airtight chamber is annularly connected and arranged. The composite heat dissipation structure according to claim 1, wherein the heat pipe is a flat-plate heat pipe, the uniform temperature plate is curled and wrapped around the outer edge of one end of the heat pipe, and the other end of the heat pipe is arranged in series Multiple cooling fins or a radiator or a water cooling module. The composite heat dissipation structure according to claim 1, wherein the heat pipe has a vacuum chamber, and the vacuum chamber is independently arranged. The composite heat dissipation structure according to claim 1, wherein the first and second ends are flat or elliptical or square or have any geometry. The composite heat dissipation structure according to claim 1, wherein there is a first radiator between the uniform temperature plate and the heat pipe, and the inner edge of the uniform temperature plate simultaneously covers one side of the first radiator And one side of the heat pipe. The composite heat dissipation structure according to claim 9, wherein the first heat sink has a plurality of heat dissipation fins. The composite heat dissipation structure according to claim 9, wherein the outer edge surface of the temperature equalizing plate further has a second heat sink.

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