Apparatus for machining angled grooves on inner circumferential surface of heat pipe and method for machining angled grooves on inner circumferential surface of heat pipe using same

Abstract

The present invention relates to an apparatus for machining angled grooves on the inner circumferential surface of a heat pipe and a method for machining angled grooves on the inner circumferential surface of a heat pipe using the apparatus, the apparatus for machining angled grooves on the inner circumferential surface of a heat pipe, which transfers fluid from a high to low temperature section, comprising: a fixing part for fixing in place the heat pipe having a screw thread machined therein; a rotary shaft one end of which is rotatably attached to the fixing part and which is inserted into the heat pipe; a rotary shaft rotation means, connected to the other end of the rotary shaft, for rotating the rotary shaft; and a machining part, mounted on the rotary shaft and sliding along the rotary shaft lengthwise as same rotates, for machining the angled grooves by deforming the ends of the screw thread machined on the inner circumferential surface of the heat pipe.

Description

Device for machining an indented groove on the inner surface of a heat pipe and a method for machining an indented groove on the inner surface of a heat pipe using the same

[0001] The present invention relates to an apparatus for machining an angled groove on the inner surface of a heat pipe and a method for machining an angled groove on the inner surface of a heat pipe using the same. More specifically, the invention relates to an apparatus for machining an angled groove on the inner surface of a heat pipe for forming an angled groove on the inner surface of a heat pipe and a method for machining an angled groove on the inner surface of a heat pipe using the same.

[0002] Referring to the prior art described in Korean Registered Patent No. 10-0394309 (registered on July 29, 2003), the conventional heat pipe is configured such that when one end of a heat pipe in which a working fluid such as methyl alcohol, acetone, or water (distilled water) is injected into a metal pipe in which a fine metal mesh is attached to the inner wall of the metal pipe, or a combination of the two methods is formed, the working fluid evaporates at the end, and the evaporated working fluid moves in a gaseous state through the hollow part of the heat pipe to the other end that is not heated, transferring the latent heat of evaporation to the outside surroundings of the heat pipe to condense, and the condensed fluid returns to the heated part, i.e., the end, through the metal mesh or grooves by capillary action and evaporates again, continuous heat transfer is achieved.

[0003] Conventionally, heat pipes using such a fine metal mesh have been the most widely used, but since the fine metal mesh must be bonded to the inner wall of the entire pipe, it is difficult to manufacture when the heat pipe is thin or long, and consequently, there is a problem that manufacturing costs increase.

[0004] The present invention was created to solve the above-mentioned problems, and aims to provide an apparatus for machining an concave groove on the inner surface of a heat pipe that can easily machine a concave groove capable of trapping steam on the inner surface of a heat pipe regardless of the diameter and length of the heat pipe, and a method for machining an concave groove on the inner surface of a heat pipe using the same.

[0005] To achieve the above objective, the present invention provides a device for machining an angled groove on the inner surface of a heat pipe for transferring fluid from a high-temperature section to a low-temperature section, comprising: a fixing part for fixing the heat pipe having internal screw threads; a rotating shaft inserted into the interior of the heat pipe, one end of which is rotatably mounted on the fixing part; a rotating shaft rotation means connected to the other end of the rotating shaft and rotating the rotating shaft; and a machining part mounted on the rotating shaft, which slides along the longitudinal direction of the rotating shaft when the rotating shaft rotates, thereby deforming the end of the screw threads machined on the inner surface of the heat pipe to form the angled groove.

[0006] In the device for machining an inner circumferential groove of a heat pipe according to the present invention, a spiral groove may be formed in the longitudinal direction on the circumferential surface of the rotation axis, a through hole may be formed in the longitudinal direction of the machining part at the center of the machining part, and a spiral corresponding to the spiral groove may be machined in the through hole.

[0007] The above-mentioned processing part may have a cylindrical shape, and one end of the processing part may protrude roundly from the outside to the inside.

[0008] One side of the fixed part may be provided with a mounting end for mounting the rotating shaft, and a mounting groove for mounting the rotating shaft may be formed in the mounting end, and a bearing may be provided inside the mounting groove.

[0009] When the rotation axis rotates in one direction by the rotation axis rotation means, the processing part moves from the other end of the rotation axis to the one end, deforming the end of the screw thread to process into the concave groove.

[0010] In addition, the present invention provides a method for machining an angled groove on the inner surface of a heat pipe, wherein the heat pipe, having internal screw threads machined therein, is fixed to a fixed part; a rotating shaft assembly step in which a rotating shaft is inserted into the heat pipe and the inserted rotating shaft is assembled to the fixed part; a machining part assembly step in which a machined part is assembled to the rotating shaft to machine the screw threads into the angled groove; and a machined part movement and angled groove machining step in which the machined part slides into the interior of the heat pipe by the rotation of the rotating shaft, thereby deforming the end of the screw threads to form the angled groove.

[0011] According to the device for machining an angled groove on the inner surface of a heat pipe and the method for machining an angled groove on the inner surface of a heat pipe using the same, since the machining part moves inside the heat pipe by the rotation of a rotation axis, an angled groove capable of trapping steam can be easily machined on the inner surface of a heat pipe regardless of the diameter and length of the heat pipe.

[0012] In addition, manufacturing costs can be reduced by not attaching separate components, such as metal mesh, to the inner surface of the heat pipe.

[0013] FIG. 1 is a schematic diagram illustrating a device for machining an inner circumferential groove of a heat pipe according to an embodiment of the present invention.

[0014] Figure 2 is a drawing showing a state in which a heat pipe with internal threads is fixed to a fixed part shown in Figure 1.

[0015] Figure 3 is a drawing showing the state in which a rotating shaft is mounted on the fixed part shown in Figure 2.

[0016] FIG. 4 is a drawing showing the state in which a processing part and a rotation axis rotation means are mounted on the rotation axis shown in FIG. 3.

[0017] Figure 5 is an enlarged drawing showing the state in which the screw threads formed inside the heat pipe by the processing part shown in Figure 4 are processed into a groove.

[0018] FIG. 6 is a flowchart illustrating the sequence of a method for machining a recessed groove on the inner surface of a heat pipe according to another embodiment of the present invention.

[0019] Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0020] Referring to FIG. 1, the inner surface concave groove processing device (100) of a heat pipe according to an embodiment of the present invention is for processing a concave groove (12) capable of storing steam in a heat pipe (10) that transfers fluid from a high-temperature part to a low-temperature part, and includes a fixed part (110), a rotating shaft (120), a rotating shaft rotation means (130), and a processing part (140).

[0021] Referring to FIGS. 1 and 2, the fixing part (110) serves to fix the heat pipe (10), and it is preferable that the heat pipe (10) fixed to the fixing part (110) be fixed to the fixing part (110) after having a screw thread (11) machined on its inner surface. It is preferable that the fixing part (110) for fixing the heat pipe (10) be equipped with a clamp (111) for fixing the heat pipe (10), and since the fixing structure for fixing the heat pipe (10) using the clamp (111) is general, a detailed description thereof will be omitted.

[0022] It is preferable to use a tap tool, an internal diameter screw cutter, a rotary brush, laser processing, etc., to machine the screw threads (11) on the inner surface of the heat pipe (10) fixed to the above-mentioned fixed part (110).

[0023] Referring to FIGS. 1 and 3, a rotating shaft (120) is inserted into the interior of the heat pipe (10) fixed to the fixed part (110), and one end thereof penetrates the heat pipe (10), and the one end of the rotating shaft (120) that penetrates the heat pipe (10) is rotatably mounted to the fixed part (110).

[0024] One side of the fixed part (110) is provided with a mounting end (112) to which one end of the rotating shaft (120) is mounted, and a mounting groove (112a) to which one end of the rotating shaft (120) is mounted is formed in the mounting end (112), and a bearing (B) is provided inside the mounting groove (112a) to be in close contact with the one end of the rotating shaft (120) inserted into the mounting groove (112a).

[0025] Referring to FIGS. 1 and 4, a rotation shaft rotation means (130) is connected to the other end of the rotation shaft (120), and the rotation shaft rotation means (130) provides power to rotate the rotation shaft (120). The other end of the rotation shaft (120) is connected to the rotation shaft rotation means (130), and one end of the rotation shaft (120) is inserted into the mounting groove (112a) and then comes into close contact with the bearing (B), so that the rotation shaft (120) rotates smoothly by the rotational force provided by the rotation shaft rotation means (130).

[0026] A processing part (140) is mounted on the rotating shaft (120) which is rotated by the rotating shaft rotation means (130), and the processing part (140) slides along the longitudinal direction of the rotating shaft (120) when the rotating shaft (120) rotates, thereby deforming the end of the screw thread (11) processed on the inner circumference of the heat pipe (10) to process the recessed groove (12) in which steam is stored on the inner circumference of the heat pipe (10).

[0027] A spiral groove (121) is formed along the longitudinal direction of the rotation axis (120) on the circumferential surface of the rotation axis (120), and a through hole (141) through which the rotation axis (120) passes is formed along the longitudinal direction of the processing part (140) in the center of the processing part (140) through which the rotation axis (120) slides when the rotation axis (120) rotates.

[0028] Referring to FIGS. 1, 4 and 5, it is preferable that a spiral (not shown) corresponding to the spiral groove (121) formed on the circumferential surface of the rotation shaft (120) is formed on the inner circumferential surface of the through hole (141). When the rotation shaft (120) is rotated by the rotation shaft rotation means (130) by the spiral groove (121) formed on the rotation shaft (120) and the spiral (not shown) formed on the processing part (140), the processing part (140) slides along the longitudinal direction of the rotation shaft (120) and presses the end of the screw thread (11) to process the screw thread (11) into the groove (12).

[0029] The processing part (140) mounted on the rotation shaft (120) has a cylindrical shape, and one end of the processing part (140) protrudes roundly from the outside to the inside, and it is preferable that the one end of the processing part (140) be positioned in the direction in which the processing part (140) moves. Since one end of the processing part (140) is formed roundly and the processing part (140) moves toward the end having a rounded shape, it is smoothly inserted into the interior of the heat pipe (10).

[0030] It is preferable that the circumferential diameter of the above-mentioned processing part (140) is larger than the inner diameter of the screw thread (11) machined on the inner circumferential surface of the heat pipe (10) and smaller than the inner diameter of the heat pipe (10). It is preferable that a plurality of the above-mentioned processing parts (140) having various circumferential diameters be interchangeably mounted on the rotation shaft (120), and as a result of the above-mentioned processing parts (140) having various circumferential diameters being interchangeably mounted on the rotation shaft (120), the screw thread (11) machined on the inner circumferential surface of the heat pipe (10) having various diameters, which is fixed to the above-mentioned fixing part (110), is machined into a groove (12).

[0031] Referring to FIG. 6, a method for machining an inner circumferential groove of a heat pipe according to another embodiment of the present invention includes a heat pipe fixing step (S100), a rotation axis assembly step (S200), a machined part assembly step (S300), and a machined part movement and groove machining step (S400).

[0032] Referring to FIGS. 1, 2 and 6, the heat pipe fixing step (S100) is a step of fixing a heat pipe (10) having internal threads (11) machined therein to a fixing part (110). The machining of the internal threads (11) on the inner surface of the heat pipe (10) fixed to the fixing part (110) is performed using a tap tool, an internal thread cutter, a rotary brush, laser processing, etc., and the fixing structure of the fixing part (110) that fixes the heat pipe (10) is general, so a detailed description thereof will be omitted.

[0033] Referring to FIGS. 1, FIGS. 3 and FIGS. 6, after the heat pipe fixing step (S100), a rotation shaft assembly step (S200) is performed, and the rotation shaft assembly step (S200) is a step of inserting a rotation shaft (120) into the heat pipe (10) and then assembling the inserted rotation shaft (120) to the fixing part (110).

[0034] A rotating shaft (120) is inserted into the interior of the heat pipe (10) fixed to the fixed part (110), and one end thereof penetrates the heat pipe (10) and is rotatably mounted to the fixed part (110).

[0035] One side of the fixed part (110) is provided with a mounting end (112) to which one end of the rotating shaft (120) is mounted, and a mounting groove (112a) to which one end of the rotating shaft (120) is mounted is formed in the mounting end (112), and a bearing (B) is provided inside the mounting groove (112a) to be in close contact with the one end of the rotating shaft (120) inserted into the mounting groove (112a).

[0036] A rotation shaft rotation means (130) is connected to the other end of the rotation shaft (120), and the rotation shaft rotation means (130) provides power to rotate the rotation shaft (120). The other end of the rotation shaft (120) is connected to the rotation shaft rotation means (130), and after one end of the rotation shaft (120) is inserted into the mounting groove (112a) and comes into close contact with the bearing (B), the rotation shaft (120) rotates smoothly by the rotational force provided by the rotation shaft rotation means (130).

[0037] Referring to FIGS. 1, FIGS. 4, FIGS. 5 and FIGS. 6, after the rotational shaft assembly step (S200), a processing part assembly step (S300) is performed, and the processing part assembly step (S300) is a step of assembling a processing part (140) that processes the screw thread (11) into the groove (12) on the rotational shaft (120).

[0038] It is preferable that a spiral groove (121) is formed along the longitudinal direction of the rotational shaft (120) on the circumferential surface of the rotational shaft (120), and a through hole (141) through which the rotational shaft (120) passes is formed along the longitudinal direction of the processing part (140) in the center of the processing part (140) which slides along the longitudinal direction of the rotational shaft (120) when the rotational shaft (120) rotates, and a spiral (not shown) corresponding to the spiral groove (121) formed on the circumferential surface of the rotational shaft (120) is formed on the inner surface of the through hole (141).

[0039] After the above processing part assembly step (S300), the processing part movement and concave groove processing step (S400) is performed, and the processing part movement and concave groove processing step (S400) is a step in which the processing part (140) slides into the interior of the heat pipe (10) by the rotation of the rotation axis (120) and deforms the end of the screw thread (11) to process the concave groove (12).

[0040] When the rotation shaft (120) is rotated by the rotation shaft rotation means (130) by means of the spiral groove (121) formed on the rotation shaft (120) and the spiral (not shown) formed on the processing part (140), the processing part (140) slides along the longitudinal direction of the rotation shaft (120) and presses the end of the screw thread (11) to process the screw thread (11) into the groove (12).

[0041] It is preferable that the circumferential diameter of the above-mentioned processing part (140) is larger than the inner diameter of the screw thread (11) machined on the inner circumferential surface of the heat pipe (10) and smaller than the inner diameter of the heat pipe (10). It is preferable that a plurality of the above-mentioned processing parts (140) having various circumferential diameters be interchangeably mounted on the rotation shaft (120), and as a result of the above-mentioned processing parts (140) having various circumferential diameters being interchangeably mounted on the rotation shaft (120), the screw thread (11) machined on the inner circumferential surface of the heat pipe (10) having various diameters, which is fixed to the above-mentioned fixing part (110), is machined into a groove (12).

[0042] As the above processing part (140) moves inside the heat pipe (10) by the rotation of the rotation axis (120), a groove (12) capable of trapping steam can be easily processed on the inner surface of the heat pipe (10) regardless of the diameter and length of the heat pipe (10).

[0043] In addition, manufacturing costs can be reduced by not attaching a separate component, such as a metal mesh, to the inner surface of the heat pipe (10).

[0044] The present invention has been described with reference to embodiments illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

[0045] The present invention can be used in a heat pipe.

Claims

1. An apparatus for machining an indentation groove on the inner surface of a heat pipe that transfers fluid from a high-temperature section to a low-temperature section, wherein A fixing part for fixing the heat pipe having internal screw threads; A rotating shaft, one end of which is rotatably mounted on the above-mentioned fixed part and inserted into the interior of the heat pipe; A rotating shaft rotation means connected to the other end of the above rotating shaft and rotating the above rotating shaft; and A device for machining an inner circumferential groove of a heat pipe, comprising a machining part that is mounted on the aforementioned rotating shaft and, when the rotating shaft rotates, slides along the longitudinal direction of the rotating shaft to deform the end of the screw thread machined on the inner circumferential surface of the heat pipe to machine it into the aforementioned groove.

2. In Claim 1, A spiral groove is formed along the longitudinal direction on the circumferential surface of the above-mentioned rotation axis, and A through hole is formed in the center of the above-mentioned processing part along the longitudinal direction of the above-mentioned processing part, and A device for machining an inner circumferential groove of a heat pipe, characterized in that a spiral corresponding to the spiral groove is machined in the through hole.

3. In Claim 2, The above-mentioned processing part has a cylindrical shape, and A device for machining an inner circumferential groove of a heat pipe, characterized in that one end of the above-mentioned processing part protrudes roundly from the outside to the inside.

4. In Claim 1, One side of the above fixed part is provided with a mounting end on which the above rotating shaft is mounted, and A mounting groove is formed in the above-mentioned mounting portion for mounting the above-mentioned rotating shaft, and A device for machining an inner circumferential groove of a heat pipe, characterized in that a bearing is provided inside the mounting groove.

5. In Claim 1, A device for machining an inner circumferential groove of a heat pipe, characterized in that when the rotation axis is rotated in one direction by the rotation axis rotation means, the machining part moves from the other end side of the rotation axis to the one end side, deforming the end of the screw thread to machine the groove.

6. A method for machining an angled groove on the inner surface of a heat pipe to form an angled groove on the inner surface of a heat pipe that transfers fluid from a high-temperature section to a low-temperature section, A heat pipe fixing step of fixing the heat pipe, which has internal screw threads, to a fixing part; A rotational shaft assembly step of inserting a rotational shaft into the heat pipe and assembling the inserted rotational shaft to the fixed part; A machining part assembly step of assembling a machining part that machines the screw thread into the groove on the above-mentioned rotating shaft; and A method for machining an inner circumferential groove of a heat pipe, comprising a machining part movement and a machining step of forming an indentation groove by deforming the end of the screw thread while the machining part slides into the interior of the heat pipe by the rotation of the above-mentioned rotation axis.

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