TWI805889B - Heat-dissipating tube - Google Patents

Abstract

A heat-dissipating tube is provided to solve the problem where the curvature of the conventional heat-dissipating tube is too large which tends to cause deformation. The heat-dissipating tube includes a tube body having a first end and a second end. The tube body includes at least one bending section between the first and second ends. A plurality of grooves forms on the outer periphery of the at least one bending section. The outer periphery of the at least one bending section has a circumferential length. Each of the plurality of grooves has a length not fully overlapped with the circumferential length.

Description

Heat pipe

The invention relates to a conduit, in particular to an easily bendable heat dissipation conduit.

With the rapid development of the information industry, the data processing speed of computer devices is also faster, and the heat generated by it is getting higher and higher, causing the temperature of the components to rise. Heat dissipation is performed by using a heat dissipation pipe, which can be a heat pipe of a heat dissipation system or a pipe fitting of a water cooling system, which have been widely used in the field of heat dissipation of electronic components. The known heat dissipation conduit has a pipe body, and a working fluid is injected into the pipe body; in this way, the pipe body can be used to connect a heat source and a heat dissipation body, and conduct the heat generated by the heat source to the heat dissipation body, thereby achieving The role of heat dissipation.

However, in the above-mentioned conventional heat pipe, since the heat source and the heat sink are arranged at different positions, and other components are installed in the path between the heat source and the heat sink, the conventional heat pipe must consider space Due to the limitation of use, therefore, it is necessary to bend the known heat dissipation pipe to a required angle to avoid other components, so as to be suitable for various installation occasions; Bending the heat pipe to the desired shape with tools and instruments, if the bending angle is too large, it will easily lead to deformation of the heat pipe, or even damage to the heat pipe.

In view of this, it is necessary to improve the conventional heat dissipation duct.

In order to solve the above problems, the purpose of the present invention is to provide a heat dissipation pipe, which can be easily bent at a large angle and is not easily deformed.

Another object of the present invention is to provide a heat dissipation pipe which can reduce the manufacturing cost.

Another object of the present invention is to provide a heat dissipation pipe which can improve the convenience of manufacture.

Another object of the present invention is to provide a heat dissipation duct which can improve heat dissipation efficiency.

Directionality or similar terms used throughout the present invention, such as "front", "rear", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer" , "side", etc., mainly refer to the directions of the attached drawings, and each direction or its approximate terms are only used to assist in explaining and understanding the various embodiments of the present invention, and are not intended to limit the present invention.

The elements and components described throughout the present invention use the quantifier "a" or "an" only for convenience and to provide the usual meaning of the scope of the present invention; in the present invention, it should be interpreted as including one or at least one, and singular The notion of also includes the plural unless it is obvious that it means otherwise.

Approximate terms such as "combination", "combination" or "assembly" mentioned throughout the present invention mainly include forms that can be separated without destroying the components after connection, or that the components cannot be separated after connection, etc., which are common knowledge in the art. One can be selected according to the material of the components to be connected or assembly requirements.

The heat dissipation pipe of the present invention includes: a pipe body having a first end and a second end, the pipe body has at least one curved section located between the first end and the second end, the outer wall of the curved section has A circumference length, the outer wall of the curved section has grooves occupying a partial circle of the outer wall The circumference length part has a forming arc length, and the forming arc length is 1/8~3/4 times of the circumference length.

Accordingly, in the heat dissipation pipe of the present invention, the pipe body has at least one curved section, and the outer wall of the curved section has several grooves, and each of the grooves can have a sufficient length, and the manufacturer can use the number of grooves A groove bends the tube body at a large angle, so that the tube body can be easily bent to the desired shape or angle without deformation, so that the heat dissipation pipe can be matched with various installation spaces, and can be It has the effect of improving manufacturing convenience and installation convenience.

Wherein, the curved section has a curved inner side and a curved outer side oppositely, and the plurality of grooves are located on the curved inner side. In this way, the structure is simple and easy to manufacture, and has the effect of reducing manufacturing cost.

Wherein, there are several curved sections, and the bending directions of at least two curved sections may be different. In this way, it can be applied to different installation spaces, and has the effect of improving the convenience of installation.

Wherein, there may be a tube wall thickness between the outer wall and the inner wall of the curved section, the groove may have a maximum groove depth, and the maximum groove depth may be greater than or equal to 1/4 times the tube wall thickness, and the tube The difference between the wall thickness and the maximum groove depth may be greater than or equal to 0.1 mm. In this way, the pipe body can be easily bent by the grooves, which has the effect of improving the convenience of manufacture.

Wherein, the groove may have a width, and there may be a distance between any two adjacent grooves, and the distance may be less than or equal to the width. In this way, the plurality of grooves can be formed conveniently to simplify the manufacturing steps, which has the effect of reducing the manufacturing cost.

Wherein, at least one of the several widths may be greater than or equal to twice the spacing. In this way, the pipe body can be easily bent by the grooves, which has the effect of improving the convenience of manufacture.

Wherein, the distance gradually expands from the outer wall of the curved section toward the inner wall. In this way, the spacing can be formed into a trapezoidal shape with a narrow top and a wide bottom, which makes it easier for the pipe body to make larger angles. Degree of bending effect.

Wherein, the groove may have a width, and there may be a distance between any two adjacent grooves, and at least one of the several distances may be greater than or equal to twice the width. In this way, the bending section can not be bent excessively, which has the effect of preventing the pipe body from breaking.

Wherein, a working fluid may be further included, and the working fluid is filled in the tube body. In this way, the heat dissipation pipe of the present invention can be applied to the pipe fittings of the water cooling system, which has the effect of improving the convenience of use.

Wherein, the working fluid may be a non-conductive liquid. In this way, even if the working fluid leaks, the system circuit will not be short-circuited.

Wherein, a capillary structure may be further included, the capillary structure is located in the tube body, and the first end and the second end of the tube body are closed. In this way, the heat dissipation pipe of the present invention can be applied to the heat pipe of the heat dissipation system, which has the effect of improving the convenience of use.

Wherein, the capillary structure system may be a porous mesh structure, micro-grooves or sintered powder and other structures. In this way, the flow of the working fluid due to capillary phenomenon can be increased, which has the effect of improving good heat dissipation performance.

Wherein, the bending angle of the pipe body is greater than or equal to 90 degrees. In this way, the system has the effect of being able to meet the configuration requirements of various installation spaces.

Wherein, the bottoms of the several grooves are arc-shaped. In this way, when the pipe body is bent, the situation that the pipe body is easily broken due to the formation of sharp bottoms of the several grooves can be avoided, which has the effect of preventing the leakage of the working fluid.

Wherein, the groove may have two opposite wall sides, and there is an included angle between the wall side and the adjacent outer wall, and the included angle may be greater than or equal to 90 degrees. In this way, it has the effect that the pipe body can be easily bent at a larger angle.

〔this invention〕

1: tube body

1a: first end

1b: second end

11: Bending section

11a: outer wall

11b: inner wall

1c: the first tube

1d: the second tube

1e: the third tube

111: curved inside

112: curved outside

12: Groove

12a: Wall edge

2: capillary structure

3: Working fluid

D: maximum groove depth

G: Spacing

H: heat source

R1: circumference length

R2: length of forming arc

P: pump

Q: cooling unit

S: heat absorbing unit

T: Tube wall thickness

W: width

θ: included angle

[Fig. 1] An unbent perspective view of the first embodiment of the present invention.

[Fig. 2a] A sectional view along line A-A of Fig. 1.

[Fig. 2b] A sectional view of the capillary structure and working fluid inside the first embodiment of the present invention.

[Fig. 3] A sectional view along line B-B in Fig. 2b.

[Figure 4a] An enlarged view as shown in Figure C of Figure 2b.

[Fig. 4b] An enlarged cross-sectional schematic diagram of another aspect of Fig. 2b C.

[Fig. 5] An enlarged cross-sectional schematic view of another aspect of the first embodiment of the present invention.

[FIG. 6] A plan view of the first embodiment of the present invention forming a curve.

[FIG. 7] An unbent plan view of the second embodiment of the present invention.

[FIG. 8] A plan view showing a second embodiment of the present invention forming a curve.

[Fig. 9] A structural diagram of the heat dissipation conduit of the present invention applied to the pipe fittings of the water cooling system.

In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and easy to understand, the preferred embodiments of the present invention are specifically cited below, together with the accompanying drawings, as follows in detail: Please refer to Figures 1 and 2a Shown, it is the first embodiment of the heat dissipation pipe of the present invention, wherein, Figures 1 and 2a show the unbent state of the heat dissipation pipe, and the heat dissipation pipe includes a pipe body 1 . Please also refer to Figure 2b, the heat dissipation pipe of the present invention can be applied to the heat pipe of the heat dissipation system or the pipe fitting of the water cooling system. When the heat dissipation pipe of the present invention is applied to the heat pipe of the heat dissipation system, the pipe body 1 can have a capillary structure 2 inside And a working fluid 3, when the heat dissipation conduit of the present invention is applied to the pipe fittings of the water cooling system, the inside of the pipe body 1 may only have the working fluid 3, and the heat pipe of the heat dissipation system is used as an example for illustration below, but it is not limited to this .

Please refer to Figure 1, the pipe body 1 has a first end 1a and a second end 1b, the first end 1a and the second end 1b can be closed as shown in Figure 2b, the pipe body 1 can be made of materials with high thermal conductivity such as copper or aluminum, and the cross-section of the pipe body 1 can be any geometric shape such as a circle, a flat tube, or a polygon. The present invention is not limited here. The cross-section of the pipe body 1 of the embodiment can preferably be a perfect circle, so as to facilitate molding and simplify the manufacturing steps.

Please refer to Figures 2a, 2b, and 6, the pipe body 1 has at least one curved section 11, and the curved section 11 is located between the first end 1a and the second end 1b; in this embodiment, the curved There is one segment 11 , and the curved segment 11 may have a curved inner side 111 and a curved outer side 112 as shown in FIG. 6 . In detail, the outer wall 11a of the curved section 11 has several grooves 12, the several grooves 12 are arranged at intervals and do not communicate with each other, the several grooves 12 may be located on the curved inner side 111, the several grooves 12 The present invention does not limit the forming method, for example, it can be formed by stamping; the pipe body 1 can be bent into an L shape, a U shape or an N shape through the plurality of grooves 12 arbitrarily. The geometric shape, especially for the shape with a bending angle greater than or equal to 90 degrees, in this embodiment, the pipe body 1 is bent into a U shape for illustration. Preferably, the bottoms of the several grooves 12 may be in an arc shape; in this way, when the pipe body 1 is bent, it is possible to avoid the situation that the pipe body 1 is easily broken due to the sharp shape of the bottoms of the several grooves 12 , thereby preventing the working fluid 3 from leaking.

Please refer to Figures 3 and 6, the outer wall 11a has a circumferential length R1, the groove 12 has a forming arc length R2 on the outer wall 11a, the forming arc length R2 does not completely overlap the circumferential length R1, the forming The arc length R2 can be smaller than the circumferential length R1, and its non-overlapping part is located on the curved outer side 112 of the curved section 11, that is, the forming arc length R2 and the circumferential length R1 are only partially overlapped, so that the plurality of grooves 12 is formed so that it is not surrounded by the entire circumference of the curved section 11; preferably, the length R2 of the forming arc can be 1/8 to 3/4 times the length R1 of the circumference; thus, the groove 12 is Can have enough length, make this pipe body 1 can be easily bent into required shape, can improve To improve manufacturing convenience, at the same time, it can also avoid the bending outer side 112 of the bending section 11 from being broken due to too long forming arc length R2, or prevent the tube body 1 from being difficult to bend due to too short forming arc length R2. Again, the depth of each of these grooves 12 gradually decreases to zero (as shown in Fig. 3) near two ends, and the two ends of each of these grooves 12 can also be arc-shaped (as shown in Fig. 1 As shown in the figure), it can effectively avoid the stress concentration effect caused by the wrong or improper force application during the bending process of the pipe body 1, so that the pipe body 1 is prone to cracks around the groove 12.

Please refer to FIG. 4a, and it is further explained that there may be a tube wall thickness T between the outer wall 11a and the inner wall 11b of the curved section 11, and the groove 12 may have a maximum groove depth D and a width W, And there may be a distance G between any two adjacent grooves 12; the maximum groove depth D is preferably greater than or equal to 1/4 times of the tube wall thickness T, and the tube wall thickness T and the maximum groove depth D The difference is preferably greater than or equal to 0.1 mm, so as to prevent the plurality of grooves 12 from being too shallow so that the tube body 1 is not easy to bend, and to avoid the plurality of grooves 12 being too deep to cause the tube body 1 to be easily broken. Improve manufacturing convenience. In addition, the distance G is preferably smaller than or equal to the width W (as shown in FIG. 4b ), so as to facilitate the formation of the plurality of grooves 12 and simplify the manufacturing steps. Wherein, the distance G can also be gradually expanded from the outer wall 11a toward the inner wall 11b as shown in Figure 5, so that the distance G can form a trapezoidal shape with a narrow top and a wide bottom; It is easier to bend at a larger angle. In addition, the groove 12 may have two opposite wall sides 12a, and there may be an included angle θ between the wall side 12a and the adjacent outer wall 11a, and the included angle θ may be equal to 90 degrees as shown in Figures 4a and 4b, Or greater than 90 degrees as shown in Figure 5; like this, the pipe body 1 can also be easily bent at a larger angle.

Wherein, at least one of the intervals G of the several intervals G may be greater than or equal to twice the width W as shown in FIG. Preferably, at least one of the gaps G can be located in the middle of the curved section 11, so as to prevent the pipe body 1 from being broken due to excessive bending of the curved section 11. Alternatively, at least one of the widths W of the plurality of widths W may be greater than or equal to the distance G as shown in Figure 4b. 2 times, and the at least one of the widths W can be located in the middle of the curved section 11 in the range of ±45 degrees; preferably, the at least one of the widths W can be located in the middle of the curved section 11, so that the pipe body 1 can Easy to bend.

Please refer to Figure 2b, the capillary structure 2 is located in the tube body 1, and the capillary structure 2 can be a porous mesh structure, micro-grooves or sintered powder to increase the flow of the working fluid due to capillary phenomena , so as to help the condensed working fluid to re-accumulate and flow back, so as to re-absorb the heat of the heat source, thereby improving the good heat dissipation performance.

The working fluid 3 is filled in the tube body 1 and contacts the capillary structure 2. The working fluid 3 can penetrate into the capillary structure 2 and flow by capillary action. The working fluid 3 can be water, alcohol or other low boiling point Liquid; preferably, the working fluid 3 can be a non-conductive liquid, so that even if the working fluid 3 leaks, the system circuit will not be short-circuited. The working fluid 3 can absorb heat from the liquid state and evaporate into a gaseous state, and then use the gas-liquid phase change mechanism of the working fluid 3 to achieve heat transfer; Dissipate after forming a gaseous state, and prevent the interior from being compressed into the space after the working fluid 3 forms a gaseous state due to air occupation, thereby affecting the heat dissipation efficiency.

Please refer to Figure 6, according to the aforementioned structure, the heat dissipation conduit can be used to directly or indirectly connect a heat source (not shown in the figure) to dissipate heat from the heat source. The heat source can be, for example, a mobile phone, Central processing units of computers or other electrical products, or electronic components such as chips that generate heat due to operation on circuit boards. Wherein, since the pipe body 1 has the curved section 11, and the several grooves 12 of the curved section 11 can be located on the inside of the bend 111, the manufacturer can make the pipe body 1 larger by using the several grooves 12. The angle of bending makes the tube body 1 easy to be bent to the desired shape or angle without deformation; in this way, the customer can choose the appropriate heat dissipation pipe, so that the heat dissipation pipe can be assembled corresponding to the position of the heat source , Alignment and adjustment of the height difference, so that the heat dissipation pipe can be easily installed in a narrow space, and can be matched with various installation spaces.

Please refer to Figures 7 and 8, which are the second embodiment of the heat dissipation duct of the present invention, wherein Figure 7 shows the unbent state of the heat dissipation duct, and the number of the curved sections 11 is several, and there are at least two The bending directions of the bending sections 11 are different. In the present embodiment, the number of the bending sections 11 is described as two. The bending directions of the two bending sections 11 are different, so that the pipe body 1 can be bent into an S shape. The grooves of the two bending sections 11 The groove 12 can form a local alignment on the outer wall 11a as shown in Figure 8; and in other embodiments, the pipe body 1 can also be bent into other shapes, so that the grooves 12 of the two curved sections 11 can form a local alignment Or not, the present invention is not limited, thereby being applicable to different installation spaces.

Please refer to Figure 9, in addition, when the heat dissipation pipe of the present invention is applied to the pipe fittings of the water cooling system, the pipe body 1 can be easily bent to a desired shape or angle through the several grooves 12, so that the pipe The body 1 can communicate with a pump P and a heat-absorbing unit S through a first pipe part 1c, and the heat-absorbing unit S can be attached to a heat source H of an electronic device, for example; the pipe body 1 can also be connected by a second pipe part 1d communicates with the pump P and the heat dissipation unit Q, and then connects the heat absorption unit S with the heat dissipation unit Q through a third pipe portion 1e; the pump P and the pipe body 1 have the working fluid 3 (marked in the first Figure 2b). Accordingly, the working fluid 3 in the tube body 1 and located at the heat absorbing unit S can absorb heat energy to increase its temperature, and is guided to the heat dissipation unit Q by the operation of the pump P, so that it passes through the heat dissipation unit Q It is cooled down in time, and then directed to the heat-absorbing unit S again after cooling down; so that the heat source H can effectively cool down in such a continuous cycle.

To sum up, the heat dissipation pipe of the present invention utilizes that the pipe body has at least one curved section, and the outer wall of the curved section has several grooves, and the manufacturer can make the pipe body larger by using the several grooves. The angle of bending makes the pipe body easy to be bent to the desired shape or angle without deformation, so that the heat dissipation pipe can be matched with various installation spaces, which can improve the convenience of manufacturing and installation effect.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention Invention, any person who is familiar with this skill does not depart from the spirit and scope of the present invention, and relative to the above-mentioned embodiments, various changes and modifications still belong to the technical category protected by the present invention, so the protection scope of the present invention should be regarded as the attached application Those defined by the scope of the patent shall prevail.

1: tube body

1a: first end

1b: second end

11: Bending section

11a: outer wall

11b: inner wall

12: Groove

2: capillary structure

3: Working fluid

Claims (15)

A heat dissipation conduit, comprising: a pipe body with a first end and a second end, the pipe body has at least one curved section located between the first end and the second end, the outer wall of the curved section has a circumference Length, the outer wall of the curved section has several grooves, and the groove occupies a part of the outer wall's partial circumference length and has a forming arc length, and the forming arc length is 1/8~3/4 times of the circumference length. The heat dissipation pipe according to claim 1, wherein the curved section has a curved inner side and a curved outer side opposite to each other, and the plurality of grooves are located on the curved inner side. The heat dissipation pipe according to claim 1, wherein there are several curved sections, and at least two curved sections have different bending directions. The heat dissipation pipe according to any one of claims 1 to 3, wherein, there is a pipe wall thickness between the outer wall and the inner wall of the curved section, and the groove has a maximum groove depth, and the maximum groove depth is greater than or equal to the 1/4 times the pipe wall thickness, and the difference between the pipe wall thickness and the maximum groove depth is greater than or equal to 0.1mm. The heat dissipation pipe according to any one of claims 1 to 3, wherein the groove has a width, and there is a distance between any two adjacent grooves, and the distance is less than or equal to the width. The heat dissipation pipe according to claim 5, wherein at least one of the plurality of widths is greater than or equal to twice the distance. The heat dissipation duct according to claim 5, wherein the distance is gradually expanded from the outer wall of the curved section toward the inner wall. The heat dissipation pipe according to any one of claims 1 to 3, wherein the groove has a width, and there is a distance between any two adjacent grooves, at least one of the distances is greater than or equal to the twice the width. The heat dissipation duct according to any one of claims 1 to 3, which further includes a Working fluid, the working fluid is filled in the tube body. The heat dissipation conduit according to item 9 of claim, wherein the working fluid is a non-conductive liquid. The heat dissipation pipe according to claim 9, further comprising a capillary structure, the capillary structure is located in the tube body, and the first end and the second end of the tube body are closed. As the heat dissipation conduit according to claim 11, wherein the capillary structure is a structure such as a porous mesh structure, micro-grooves or sintered powder. The heat dissipation pipe according to any one of claims 1 to 3, wherein the bending angle of the pipe body is greater than or equal to 90 degrees. The heat dissipation pipe according to any one of claims 1 to 3, wherein the bottoms of the plurality of grooves are arc-shaped. According to any one of claims 1 to 3, the groove has two opposite walls, and there is an angle between the walls and the adjacent outer wall, and the angle is greater than or equal to 90 degrees.

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