TWI598560B - Anti-gravity-type heat pipe device - Google Patents

Description

Anti-gravity heat pipe device

The present invention relates to a heat pipe, and more particularly to a heat pipe device having an anti-gravity function.

Nowadays, the performance requirements for electronic devices are getting higher and higher, and the higher the efficiency, the higher the heat generated, and the heat sink with better heat dissipation efficiency is required.

Regarding the heat pipe that plays the role of rapid heat transfer in the radiator, the working fluid or/and steam is transferred back and forth between the two ends of the heat pipe. Among them, based on the influence of gravity, the principle of raising the hot air and lowering the cold air, therefore, the steam must flow from bottom to top; also based on the influence of gravity, so that the water can only go from the upper (high) down (low Flow), therefore, the working fluid must flow from top to bottom.

However, an electronic device using a heat pipe is not necessarily used, installed, or placed in accordance with the set direction of the heat pipe. For example, the original setting is that the heat source is located at the lower end of the heat pipe. Taking a smart mobile phone or a tablet as an example, since the screen can automatically rotate in the direction of gravity, the user often uses it horizontally or reversely, so that the heat pipe in the electronic device is turned into a heat source and is located at the upper end of the heat pipe. At this time, the steam will be difficult to flow from top to bottom against gravity, and the condensed water will also be difficult to flow from bottom to top against gravity, and the heat transfer efficiency of the heat pipe will be greatly reduced to affect heat dissipation.

Therefore, how to improve the above-mentioned defects is a major issue that the inventors of the present invention are trying to solve.

It is an object of the present invention to provide a heat pipe device having a chamber partitioned by liquid and gas, which uses a gas pressure to push the liquid to flow, and even if the evaporation end is located at the upper end of the heat pipe, it can work normally, and the effect of not restricting the direction of use is achieved.

In order to achieve the above object, the present invention provides a heat pipe device comprising: an outer tube which is a hollow tube and defines a length direction; and at least a first capillary structure along which the outer tube is received and positioned At least one steam passage is formed between the at least one first capillary structure and the outer tube.

The present invention further provides a heat pipe device comprising: an outer tube, which is a hollow tube and defines a length direction; at least one first capillary structure, received along the length direction and positioned in the outer tube, the at least one first Between the capillary structure and the outer tube, at least one steam passage is formed along the length direction; and at least one inner tube is wrapped around the at least one first capillary structure, and the two ends of the at least one first capillary structure respectively pass through the at least one first capillary structure An inner tube is exposed at both ends and communicates with the at least one steam passage.

Compared with the prior art, the present invention has the following effects: it can be used normally against gravity even if it is used upside down, thereby achieving a non-directional effect without restricting the direction of use.

1‧‧‧External management

11‧‧‧ first inner end

12‧‧‧ second inner end

2‧‧‧First capillary structure

21, 22‧‧‧ end

3‧‧‧Steam channel

4‧‧‧Inside

41, 42‧‧ ‧ gap

5‧‧‧Second capillary structure

51, 52‧‧‧ recess

7‧‧‧ Third capillary structure

D‧‧‧ Length direction

H‧‧‧heat source

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a longitudinal section of a first embodiment of the present invention.

Figure 2 is a cross-sectional view showing the present invention in cross section according to Figure 1.

Figure 3 is a cross-sectional view showing a second embodiment of the present invention in a cross-sectional view.

Figure 4 is a cross-sectional view showing a third embodiment of the present invention in cross section.

Figure 5 is a cross-sectional view showing a fourth embodiment of the present invention in a longitudinal section.

Figure 6 is a schematic view showing the flow of steam and water according to Figure 5 of the present invention.

Figure 7 is a cross-sectional view showing a fifth embodiment of the present invention in a longitudinal section.

Figure 8 is a schematic view showing the flow of steam and water according to Figure 7 of the present invention.

Figure 9 is a cross-sectional view showing a sixth embodiment of the present invention in a longitudinal section.

The detailed description and technical content of the present invention are set forth below with reference to the accompanying drawings.

The invention provides an anti-gravity heat pipe device, which can force steam to flow from top to bottom, and pushes the condensed water after heat exchange to flow from bottom to top, thereby being suitable for an electronic device with undirectional or non-directionality. . 1 to 2 show a first embodiment of the present invention. As shown in FIG. 3, FIG. 4 and FIG. 5, respectively, the second, third and fourth embodiments of the present invention are shown in FIG. 7 and FIG. The fifth and sixth embodiments of the present invention are respectively shown in FIG. 6 and FIG. 8 , which are schematic diagrams showing the flow of steam and water according to the fourth and fifth embodiments of the present invention.

The heat pipe device of the first embodiment of the present invention, as shown in FIG. 1 and FIG. 2, includes an outer tube 1 and at least one first capillary structure 2. The number of the first capillary structures 2 is not limited, and in the present embodiment, The root first capillary structure 2 will be described as an example. The outer tube 1 is a hollow tube and has one end and the other end opposite to each other, and one end direction D is defined by one end to the other end (or from the other end to the end) of the outer tube 1.

The first capillary structure 2 is received in the longitudinal direction D and positioned in the outer tube 1. The manner of positioning is not limited. In the present embodiment, the following description will be taken as an example: the outer tube 1 has one opposite to each other. a first inner end 11 and a second inner end 12, the two ends of the first capillary structure 2 are respectively abutted on the first inner end 11 and the second inner end 12 and are positioned in the outer tube 1 so as to utilize the first The capillary structure 2 rapidly transfers water between the ends of the outer tube 1.

Further, at least one steam passage 3 is formed between the first capillary structure 2 and the outer tube 1 in the longitudinal direction D, so that the heat pipe device of the first embodiment of the invention is combined. The number of the steam passages 3 is not limited. In the present embodiment, since the outer peripheral edge of the first capillary structure 2 and the inner wall of the outer tube 1 are spaced apart from each other (see FIG. 2), and A capillary structure 2 is positioned at the center of the outer tube 1 as long as it does not contact the inner wall of the outer tube 1, and therefore, only one steam passage 3 is formed between the first capillary structure 2 and the outer tube 1. However, in the embodiment not shown in the drawings, if the first capillary structure 2 is manufactured in an elliptical column shape instead of the cylindrical shape shown in Fig. 2, the hollow inner portion of the outer tube 1 can be separated from the two steam passages. (not shown).

The first capillary structure 2 is a solid capillary structure, but is not limited to a solid capillary structure. In the present embodiment, the powder is wound around the capillary structure (as shown in the figures) or tightly bundled. A metal mesh capillary structure (not shown) will be described as an example.

The heat pipe device of the second embodiment of the present invention as shown in FIG. 3 is substantially the same as the first embodiment described above, and the difference is only partially contacting the inner wall of the outer tube 1 at the outer periphery of the first capillary structure 2 of the second embodiment. .

As shown in FIG. 4, the heat pipe device of the third embodiment of the present invention is substantially the same as the first embodiment described above, and the difference is that only the number of the first capillary structures 2 of the third embodiment is a plurality and spaced apart from each other, and each first capillary The outer periphery of the structure 2 and the inner wall of the outer tube 1 are also spaced apart from each other without contact.

The heat pipe apparatus of the fourth embodiment of the present invention as shown in Fig. 5 is substantially the same as that of the first embodiment described above, and the difference further includes an inner tube 4 only in the fourth embodiment. The inner tube 4 is wrapped around the first capillary structure 2, and the two ends 21, 22 of the first capillary structure 2 are exposed from the two ends of the inner tube respectively, and the manner of exposure is not limited. The following description will be described by way of example: at least one notch 41, 42 is respectively formed at both ends of the inner tube 4, and the two end portions 21, 22 of the first capillary structure 2 are respectively passed through the notch 41 and the inner tube 4 at one end of the inner tube 4. The notch 42 at the other end is exposed, and the exposed end portions 21, 22 are communicated with the steam passage 3.

As shown in FIG. 6, when the heat pipe device according to the fourth embodiment of the present invention has the upper end portion as the evaporation end, the lower end portion of the heat pipe device is the condensation end, and therefore, the upper end portion of the heat pipe device of the present invention is on either side (for example: The top side, see Fig. 6; or the side around the top side, not shown) is attached to the heat source H. When the working fluid in the heat pipe device evaporates due to the heat of the heat source H, only the steam passage 3 is allowed to flow through the steam, thereby forcing the steam to flow from the top to the bottom via the steam passage 3 (dashed arrows, inevitably with the general steam) The direction of flow from the bottom to the top is opposite; when the steam flows to the condensation end, it will condense into water, and the water is pushed by the steam and the water absorption of the first capillary structure 2 to pass from the bottom to the top through the first capillary structure. 2 Return to the evaporation end (the hollow dotted arrow, opposite to the direction of gravity where the general water must flow from top to bottom), and then be heated to become steam, and thus circulate.

The evaporation end and the condensation end of the heat pipe device of the present invention are not limited to the arrangement shown in FIG. 6, and may of course be reversed in use, that is, the upper end portion of the heat pipe device may be changed to the condensation end, and the lower end portion may be evaporated. end.

As shown in FIG. 7 and FIG. 8 , the heat pipe device of the fifth embodiment of the present invention is substantially the same as the first embodiment described above, and the difference only includes an inner tube 4 and different first capillary structures 2, and preferably Two second capillary structures 5 are included.

The inner tube 4 is wrapped around the first capillary structure 2, and both ends of the first capillary structure 2 can be exposed through the two ends of the inner tube 4, and the manner of exposure is not limited. In the embodiment, the first capillary is used. The description is made by taking an example in which both end portions 21, 22 of the structure 2 are exposed outside the ends of the inner tube 4, that is, the length of the first capillary structure 2 is larger than the length of the inner tube 4.

The second capillary structures 5 are respectively disposed (filled) in the first inner end 11 of the outer tube 1 and in the second inner end 12, and the two ends of the first capillary structure 2 are respectively connected and positioned on the second second capillary structure 5 The manner of connecting and positioning is not limited. In the present embodiment, the following description will be taken as an example: each second capillary structure 5 has a certain thickness to facilitate opening a recess 51 at one end thereof. 52, the two end portions 21, 22 of the first capillary structure 2 are respectively inserted into the concave portions 51, 52 of each of the second capillary structures 5 to be positioned (the first The two ends 21, 22 of a capillary structure 2 can be completely joined to the second capillary structure 5), the first capillary structure 2 is connected to the second capillary structure 5 to communicate, and the water can be second from one end. The capillary structure 5 flows through the first capillary structure 2 to the second capillary structure 5 at the other end. At this time, the steam passage 3 is formed between the inner tube 4 and the outer tube 1 and between the second and second capillary structures 5, and the two end portions 21 and 22 of the first capillary structure 2 are respectively passed through the second and second capillary structures. 5 is in communication with the steam passage 3.

As shown in Fig. 8, the heat pipe apparatus according to the fifth embodiment of the present invention has an upper end portion as an evaporation end and a lower end portion as a condensation end. When the working fluid in the heat pipe device evaporates due to the heat of the heat source H, only the steam channel 3 is allowed to flow through the steam, thereby forcing the steam to flow from the top to the bottom via the steam passage 3 (dashed arrow); when the steam flow When it reaches the condensation end, it will condense into water, and the water will be pushed by the steam and the water absorption of the first and second capillary structures 2, 5, from the lower second capillary structure 5, from the bottom to the top via the first capillary structure. 2 Returning to the evaporation end (hollow dashed arrow) where the second capillary structure 5 at the upper end is located, and then heated to become steam, thus circulating.

The heat pipe apparatus of the sixth embodiment of the present invention as shown in Fig. 9 is substantially the same as that of the foregoing fifth embodiment, and the difference further includes a third capillary structure 7 only in the sixth embodiment. The third capillary structure 7 is disposed on the inner wall of the outer tube 1 and is connected between the second second capillary structures 5 to assist the first capillary structure 2 (also connected between the second and second capillary structures 5) in the outer tube 1. Water is transferred between the ends to enhance the speed of water transfer.

In addition, the fourth to sixth embodiments of the present invention can also be configured such that the outer peripheral edge of the first capillary structure 2 and the inner wall of the outer tube 1 are spaced apart from each other as in the first, second, and third embodiments (see FIG. 2, but not necessarily in the middle of the outer tube 1); or let the outer periphery of the first capillary structure 2 only partially contact the inner wall of the outer tube 1 (see Fig. 3); or let the first capillary structure 2 and The inner tubes 4 are all numerous, and the inner tubes 4 are wrapped around the first capillary structures 2, and the inner tubes 4 are also spaced apart from each other without contact (see Fig. 4). As to what kind of capillary structure each of the second capillary structure 5 and the third capillary structure 7 is, it may be the same or different from the first capillary structure 2.

In summary, the present invention has the following effects as compared with the prior art: it can prevent the flow of steam from top to bottom and the flow of water from bottom to top against gravity even if the heat pipe device of the present invention is used upside down. The non-directional effect is achieved without limiting the direction of use, and is fully applicable to many electronic devices that do not use directionality. In other words, the heat pipe device of the present invention can be used in the forward direction (the heat source H is located at the lower end of the heat pipe device, not shown) or can be used in reverse (the heat source H is located at the upper end of the heat pipe device, as shown in Figs. 6 and 8). Therefore, the heat pipe device of the present invention does not use directionality.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structural changes of the present invention and the contents of the drawings are all included in the present invention. Within the scope of the rights, it is given to Chen Ming.

1‧‧‧External management

11‧‧‧ first inner end

12‧‧‧ second inner end

2‧‧‧First capillary structure

3‧‧‧Steam channel

D‧‧‧ Length direction

Claims (18)

A heat pipe device comprising: an outer tube defining a length direction; at least one first capillary structure received along the length direction and positioned in the outer tube, two of the at least one first capillary structure The ends are respectively abutted at the inner ends of the outer tube, and at least one steam passage is formed between the at least one first capillary structure and the outer tube; and at least one inner tube surrounds the at least one first capillary structure The two ends of the inner capillary tube are respectively exposed with at least one notch, and the two ends of the first capillary structure are respectively exposed through the at least one notch at one end of the inner tube and the at least one notch at the other end of the inner tube. The steam passages are connected. The heat pipe device of claim 1, wherein the outer tube has a first inner end and a second inner end opposite to each other, and the two ends of the at least one first capillary structure respectively abut the outer tube The first inner end and the second inner end are positioned. The heat pipe device of claim 1 or 2, wherein the at least one steam passage is formed between the at least one inner tube and the outer tube along the length direction. The heat pipe device according to claim 1 or 2, wherein an outer circumference of the at least one inner tube and an inner wall of the outer tube are spaced apart from each other. The heat pipe device of claim 1 or 2, wherein an outer circumference of the at least one inner tube is in partial contact with an inner wall of the outer tube. The heat pipe device of claim 1 or 2, wherein the at least one first capillary structure is a solid capillary structure. The heat pipe device according to claim 6, wherein the at least one first capillary structure is a powder-wound capillary structure or a metal mesh capillary structure wound tightly in a bundle. The heat pipe device according to claim 1 or 2, wherein the first capillary structure is a plurality of settings. A heat pipe device comprising: an outer tube which is a hollow tube and defines a length direction; at least one first capillary structure is received in the outer tube along the length direction; and second second capillary structures are respectively disposed outside the outer tube In the inner ends of the tube, the at least one first capillary structure is only connected at its two ends and positioned to the second second capillary structure; and at least one inner tube is wrapped around the at least one first capillary structure, the at least The two ends of the inner tube are respectively connected to the two second capillary structures, and the at least one inner tube, the second second capillary structure and the outer tube are formed with at least one steam passage along the length direction, and the at least one steam passage Then it is only in direct communication with the two second capillary structures. The heat pipe device of claim 9, wherein the outer tube has a first inner end and a second inner end opposite to each other, and the second second capillary structures are respectively disposed in the first inner end and the second inner portion Inside. The heat pipe device of claim 9, wherein each of the second capillary structures is provided with at least one recess, and the two ends of the at least one first capillary structure are respectively inserted into the at least one of the second capillary structures. Positioned by a recess. The heat pipe device of claim 9, wherein the two second capillary structures and the at least one first capillary structure are the same or different capillary structures. The heat pipe device of claim 9, further comprising a third capillary structure disposed on an inner wall of the outer tube and connected between the second capillary structures. The heat pipe apparatus according to any one of claims 9 to 13, wherein an outer circumference of the at least one inner tube and an inner wall of the outer tube are spaced apart from each other. The heat pipe device of any of claims 9-13, wherein the outer periphery of the at least one inner tube is in partial contact with the inner wall of the outer tube. The heat pipe device of any of claims 9-13, wherein the at least one first capillary structure is a solid capillary structure. The heat pipe device of claim 16, wherein the at least one first capillary structure is a powder-wound capillary structure or a metal mesh capillary structure that is tightly wound in a bundle. The heat pipe device according to any one of claims 9 to 13, wherein the first capillary structure and the inner tube therein are arranged in a plurality, and each of the inner tubes is wrapped around each of the first capillary structures.