TWI707117B - Heat pipe, heat pipe assembly and assemble method thereof - Google Patents

Abstract

A heat pipe includes a main body section and a pivot section. The pivot section connects with the main body section and the pivot section and the main body section form a hollow pipe body together. The pivot section has an annular surface and at least one concave part. The concave part locates in the annular surface.

Description

Heat pipe, heat pipe group and its assembling method

The invention relates to a heat pipe, a heat pipe group and an assembling method thereof, in particular to a rotating heat pipe, a heat pipe group and an assembling method thereof.

With the evolution of technology in the electronic field, the performance of electronic components has continued to increase, and the increase in performance has also increased the heat generated by the electronic components. If the heat cannot be effectively removed from the electronic components, the temperature of the electronic components will increase due to the accumulation of heat. When the temperature of the electronic components is too high, it will cause the electronic components to crash or even burn out. Therefore, a portable electronic device such as a portable computer is usually equipped with a heat dissipating module in a host base equipped with a central processing unit. However, the limited space of the host base is gradually insufficient to meet the increasing heat dissipation requirements of electronic components. Therefore, in order to provide additional heat dissipation paths for electronic components, manufacturers have installed heat pipe groups between the display and the host base to transfer the heat generated by the electronic components to the display to assist in heat dissipation.

In detail, the heat pipe group includes a first heat pipe and a second heat pipe. The first heat pipe is arranged on the main base and is in thermal contact with the heat source in the main base. The second heat pipe has a slot, and the slot is inserted into the first heat pipe so that the second heat pipe can be rotatably connected to the first heat pipe. The second heat pipe is in thermal contact with the heat conducting shell of the display, so as to transfer the heat generated by the heat source to the heat conducting shell of the display through the heat pipe group. In addition, a lubricant is generally applied to the junction of the first heat pipe and the second heat pipe, so that the second heat pipe rotates more smoothly relative to the first heat pipe. However, because the slot is not easy to observe, the amount of lubricant added is not easy to control when adding lubricant to the slot. If the amount of lubricant added is too small, the smoothness of the rotation of the second heat pipe and the first heat pipe is insufficient. If the amount of lubricant added is too much, when the first heat pipe is inserted, an air resistance will be formed in the slot to push the first heat pipe outward. As a result, the assembly quality of the first heat pipe and the second heat pipe will be poor and the problem of lubricant leakage will occur.

The present invention is to provide a heat pipe, a heat pipe group and an assembling method thereof, so as to ensure the assembly quality of the heat pipe group and avoid the problem of lubricant leakage.

The heat pipe disclosed in an embodiment of the present invention includes a body section and a pivot section. The pivot section is connected to the main body section and forms a hollow tube body together with the main body section. Wherein, the pivot section has an annular surface and at least one recessed portion, and the recessed portion is located on the annular surface.

The heat pipe set disclosed in another embodiment of the present invention includes a first heat pipe and a second heat pipe. The first heat pipe has a pivot groove. The second heat pipe includes a body section and a pivot section. The pivot section is connected to the main body section and forms a hollow tube body together with the main body section. The pivot section is rotatably located in the pivot groove. Wherein, the pivotal section has an annular surface and at least one recess. At least one recess is located on the annular surface.

The assembling method of the heat pipe group disclosed in another embodiment of the present invention includes the following steps. Apply a lubricant to the recess of one of the pivoted sections of one of the heat pipes. Insert the pivot section of one heat pipe into the pivot groove of the other heat pipe. One of the heat pipes is rotated relative to the other heat pipe, so that the lubricant is spread on the wall surface of the other heat pipe to form the pivot groove.

According to the heat pipes, heat pipe groups and their assembling methods of the above embodiments, the lubrication can be controlled by adjusting the design value of the recesses by filling the recesses of the second heat pipes instead of the pivot grooves of the first heat pipes with lubricant The filling amount of the agent. In this way, the problem of poor assembly quality of the heat pipe assembly and lubricant leakage caused by excessive lubricant filling can be avoided, or insufficient lubricant filling can affect the smoothness of the heat pipe assembly rotation.

The above description of the content of the present invention and the description of the following embodiments are used to demonstrate and explain the principle of the present invention and provide a further explanation of the scope of the patent application of the present invention.

Please refer to Figure 1 to Figure 3. FIG. 1 is a three-dimensional schematic diagram of the heat pipe set in an electronic device according to the first embodiment of the present invention. Fig. 2 is an exploded schematic diagram of the heat pipe assembly of Fig. 1. FIG. 3 is a partial enlarged schematic diagram of the second heat pipe of FIG. 2.

The heat pipe group 10 of this embodiment is installed in an electronic device 20. The electronic device 20 is, for example, a notebook computer, a tablet computer or a foldable mobile phone. In this embodiment, the electronic device 20 is a notebook computer as an example, and includes a host base 22 and a display 26. The main base 22 is equipped with a heat source 24. The heat source 24 is, for example, a central processing unit, a south bridge chip, a north bridge chip, or a display card chip. The display 26 has a display panel to display images. The display 26 is pivoted to the main base 22 so that the display 26 can rotate relative to the main base 22.

The heat pipe group 10 includes a first heat pipe 100 and a second heat pipe 200. The first heat pipe 100 is installed on the main base 22 of the electronic device 20 and is in thermal contact with the heat source 24 of the main base 22. The first heat pipe 100 has a pivot groove 110. The second heat pipe 200 is installed on the display 26 and includes a body section 210 and a pivot section 220. The body section 210 has a flat tube shape and thermally contacts the thermally conductive housing of the display 26. The pivot section 220 is connected to the main body section 210 and forms a hollow tube body together with the main body section 210. The internal space of the hollow tube is used for cooling fluid for cooling circulation. The pivot section 220 is inserted into the pivot groove 110 of the first heat pipe 100 and is rotatably located in the pivot groove 110. In this way, when the display 26 rotates relative to the host base 22, the second heat pipe 200 can rotate relative to the first heat pipe 100 as the display 26 moves.

In this embodiment, the maximum width D1 of the first heat pipe 100 is greater than the diameter D2 of the pivot section 220 of the second heat pipe 200. For example, the maximum width D1 of the first heat pipe 100 is 8 mm, and the aperture H of the pivot groove 110 is 4 mm. The diameter D2 of the pivot section 220 of the second heat pipe 200 matches the hole diameter H of the pivot groove 110 and is also 4 mm.

In this embodiment, the pivot section 220 has an annular surface 221 and a plurality of recesses 222. These recesses 222 are, for example, grooves and are located on the annular surface 221. The long sides L of the recesses 222 are parallel to the central axis A of the pivot section 220 and extend from an end of the pivot section 220 away from the body section 210 toward the body section 210. These recesses 222 are used to accommodate paste lubricants, for example.

In this embodiment, the number of recesses 222 is multiple, but it is not limited thereto. In other embodiments, the number of recesses may be only a single one.

The assembling method of the heat pipe group 10 of this embodiment will be described below. First, please refer to Figure 4 to Figure 8. 4 to 8 are schematic diagrams of the assembly process of the heat pipe group. As shown in FIG. 4, a lubricant 30 is filled into the recess 222 of the pivotal section 220 of the second heat pipe 200. Then, as shown in FIGS. 5 and 6, the pivotal section 220 of the second heat pipe 200 is inserted into the pivotal groove 110 of the first heat pipe 100, and the wall surface forming the pivotal groove 110 is partially caused by the recess 222 The lubricant 30 inside is in contact with the lubricant 30 and is coated with the lubricant 30, but another part is still not coated with the lubricant 30 because it is not in contact with the lubricant 30 in the recess 222. Next, as shown in FIGS. 7 and 8, the second heat pipe 200 is rotated relative to the first heat pipe 100 along the direction A, so that the lubricant 30 is applied to the wall surface of the first heat pipe 100 to form the pivot groove 110.

Since the filling amount of the lubricant 30 is proportional to the size of the recess 222, the filling amount of the lubricant 30 can be controlled by adjusting the design value of the size of the recess 222. In this way, the problem of poor assembly quality of the heat pipe assembly 10 and leakage of the lubricant 30 caused by the excessive filling amount of the lubricant 30 can be avoided, or the insufficient filling amount of the lubricant 30 will affect the smoothness of the rotation of the heat pipe assembly 10.

In the above embodiment, the long side L of the recess 222 is parallel to the central axis A of the pivoting section 220, but it is not limited to this. Please refer to FIG. 9 and FIG. 10. FIG. 9 is a partial enlarged view of the second heat pipe according to the second embodiment of the present invention. Fig. 10 is a partial enlarged schematic view of the second heat pipe according to the third embodiment of the present invention.

As shown in FIG. 9, the second heat pipe 200a of the present embodiment includes a body section 210 and a pivot section 220a. The structure of the main body section 210 is similar to the structure of the main body section 210 of the above-mentioned first embodiment, so it will not be repeated. The pivot section 220a has an annular surface 221 and a plurality of recesses 222a. These recesses 222 a are, for example, grooves and are located on the annular surface 221. The recesses 222a surround the central axis A of the pivotal section 220a.

As shown in FIG. 10, the second heat pipe 200b of this embodiment includes a body section 210 and a pivot section 220b. The structure of the main body section 210 is similar to the structure of the main body section 210 of the above-mentioned first embodiment, so it will not be repeated. The pivot section 220b has an annular surface 221 and a recess 222b. The recess 222b is, for example, a groove and is located on the annular surface 221. The recess 222b has a spiral shape and surrounds the central axis A of the pivot section 220b.

According to the heat pipes, heat pipe groups and their assembling methods of the above embodiments, the lubrication can be controlled by adjusting the design value of the recesses by filling the recesses of the second heat pipes instead of the pivot grooves of the first heat pipes with lubricant The filling amount of the agent. In this way, the problem of poor assembly quality of the heat pipe assembly and lubricant leakage caused by excessive lubricant filling can be avoided, or insufficient lubricant filling can affect the smoothness of the heat pipe assembly rotation.

Although the present invention is disclosed in the foregoing embodiments as described above, it is not intended to limit the present invention. Anyone familiar with similar art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, this The scope of patent protection for inventions shall be determined by the scope of patent applications attached to this specification.

10: Heat pipe group 20: Electronic device 22: Main unit 24: Heat source 26: display 30: Lubricant 100: The first heat pipe 110: pivot slot 200, 200a, 200b: second heat pipe 210: body segment 220, 220a, 220b: pivot section 221: ring surface 222, 222a, 222b: recessed part A: Central axis D1: width D2: diameter H: Aperture L: Long side

FIG. 1 is a three-dimensional schematic diagram of the heat pipe set in an electronic device according to the first embodiment of the present invention. Fig. 2 is an exploded schematic diagram of the heat pipe assembly of Fig. 1. FIG. 3 is a partial enlarged schematic diagram of the second heat pipe of FIG. 2. 4 to 8 are schematic diagrams of the assembly process of the heat pipe group. Fig. 9 is a partial enlarged schematic view of the second heat pipe according to the second embodiment of the present invention. Fig. 10 is a partial enlarged schematic view of the second heat pipe according to the third embodiment of the present invention.

10: Heat pipe group

100: The first heat pipe

110: pivot slot

200: second heat pipe

210: body segment

220: pivot section

221: ring surface

222: Depressed part

D1: width

D2: diameter

H: Aperture

Claims (10)

A heat pipe, including: A body section; and a pivoting section connected to the body section and forming a hollow tube with the body section; wherein the pivoting section has an annular surface and at least one recessed portion, the at least one recessed portion Located on the annular surface. The heat pipe according to the first item of the scope of patent application, wherein the long side of the at least one recess is parallel to the central axis of the pivot section. In the heat pipe described in item 2 of the scope of patent application, the at least one recessed portion extends from an end of the pivotal section away from the body section toward the body section. In the heat pipe described in item 2 of the scope of patent application, the number of the at least one recessed portion is multiple. According to the heat pipe described in claim 1, wherein the at least one recessed portion surrounds the central axis of the pivotal section. A heat pipe group including: A first heat pipe having a pivot groove; and a second heat pipe, including: a body section; and a pivot section, connected to the body section and forming a hollow tube body together with the body section, the pivot The connecting section is rotatably located in the pivoting groove; wherein the pivoting section has an annular surface and at least one recessed portion, and the at least one recessed portion is located on the annular surface. The heat pipe assembly described in item 6 of the scope of patent application, wherein the long side of the at least one recess is parallel to the central axis of the pivotal section. According to the heat pipe set described in item 7 of the scope of patent application, the at least one recessed portion extends from an end of the pivotal section away from the main body section toward the main body section. According to the heat pipe set described in item 7 of the scope of patent application, the number of the at least one recessed portion is multiple. A method for assembling heat pipe groups, including: Apply a lubricant to the recess of one of the pivot sections of one of the heat pipes; insert the pivot section of one of the heat pipes into the pivot groove of the other heat pipe; and make the one of the heat pipes opposite to the other heat pipe Rotate to make the lubricant smear on the wall surface of the pivot groove formed by the other heat pipe.

Images