Fin radiating tube

Abstract

The utility model relates to the technical field of heat dissipation devices, and particularly discloses a finned heat dissipation pipe, a plurality of heat dissipation fins are arranged on a heat dissipation pipe body, when a heat exchange medium is introduced into the heat dissipation pipe body, heat can be conducted to the heat dissipation fins through the heat dissipation pipe body and then conducted to air through the heat dissipation fins, and therefore heat exchange efficiency is improved. Through auxiliary heat dissipation of the plurality of heat dissipation fins, rapid heat dissipation can be realized; moreover, the radiating pipe body can be expanded and shaped, the expanded and shaped radiating pipe body is in interference fit with the radiating fins, locking pieces such as lantern rings and bolts do not need to be additionally arranged, the radiating fins can be firmly fixed to the outer side of the radiating pipe body by expanding the outer diameter of the radiating pipe body, the assembling efficiency can be improved, the structure is simplified, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation devices, in particular to a fin heat dissipation tube. Background Art

[0002] Finned heat pipes are the most widely used heat exchange device in gas-liquid heat exchangers. They typically consist of a heat pipe and multiple stacked fins fixed to the outside of the pipe. The pipe has heat exchange channels within it, and when the pipe exchanges heat, the fins improve heat dissipation efficiency.

[0003] The fin heat dissipation tube of prior art, such as Figure 1 and Figure 2 As shown, the fin heat dissipation tube includes a central tube and a plurality of tapered fins 41 sleeved on the outside of the central tube. The tapered fins 41 are arranged on the outside of the central tube by being staggered in both directions. Moreover, the tapered fins 41 on the far left and the far right are pressed by collars 42, and then bolts 43 are passed through the collars 42 to fix the collars 42 to the central tube. This fixing method requires additional collars 42 and bolts 43 for fixing, resulting in a complex structure, low assembly efficiency and high cost.

[0004] Therefore, the existing technology still needs to be improved and developed. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a finned heat pipe to solve the problems of the prior art finned heat pipe such as complex structure, low assembly efficiency and high cost.

[0006] A fin heat sink comprises a heat sink body and heat sink fins. The heat sink fins are provided in plurality and arranged in sequence along the axial direction of the heat sink body. The heat sink body can be expanded and shaped. The expanded and shaped heat sink body is interference-fitted with the heat sink fins.

[0007] Specifically, the middle portion of the heat dissipation pipe body has an axial heat exchange channel, and high-pressure gas or high-pressure liquid can be introduced into the heat exchange channel to expand and shape the heat dissipation pipe body.

[0008] Specifically, the heat dissipation fin includes a contact portion and a heat conducting portion connected to one end of the contact portion. The contact portion is provided with an axially extending straight hole. The inner wall of the straight hole is fully fitted with the outer wall of the heat dissipation tube body.

[0009] Specifically, the length of the contact portion along the axial direction is not less than 5 mm, a heat dissipation gap is formed between two adjacent heat dissipation fins, and the distance of the heat dissipation gap is not less than 5 mm.

[0010] Specifically, the thickness of the contact portion is 0.2-0.4 mm.

[0011] Specifically, the heat dissipation pipe body and the contact portion are both in a circular tube-shaped structure, and the heat conduction portion is in a circular sheet-shaped structure.

[0012] Specifically, two adjacent heat dissipation fins are in contact with each other.

[0013] Specifically, a bell-mouth structure is provided at the connection between the contact portion and the heat-conducting portion, and one end of the contact portion of the heat dissipating fin abuts against the bell-mouth structure of the adjacent heat dissipating fin.

[0014] Beneficial effects of the utility model:

[0015] The finned heat pipe of the present invention is provided with a plurality of heat dissipation fins on the heat dissipation pipe body. When a heat exchange medium is introduced into the heat dissipation pipe body, the heat can be conducted to the heat dissipation fins through the heat dissipation pipe body, and then conducted to the air through the heat dissipation fins. Through the auxiliary heat dissipation of the plurality of heat dissipation fins, rapid heat dissipation can be achieved. Moreover, the heat dissipation pipe body can be expanded and shaped. The heat dissipation pipe body and the heat dissipation fins have an interference fit after expansion and do not need to be provided with additional locking parts such as collars and bolts. The heat dissipation fins can be firmly fixed to the outside of the heat dissipation pipe body by expanding the outer diameter of the heat dissipation pipe body, thereby improving assembly efficiency, simplifying the structure and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional view of a tapered fin of the prior art;

[0017] Figure 2 It is a partial cross-sectional view of a fin heat dissipation tube in the prior art;

[0018] Figure 3 This is a cross-sectional view of the finned heat dissipation tube of the present invention;

[0019] Figure 4 for Figure 3 Enlarged view of part A;

[0020] Figure 5 This is a right side view of the heat dissipation fin of the present invention;

[0021] Figure 6 It is a cross-sectional view of the heat dissipation fin of the present invention.

[0022] The reference numerals are: heat pipe body 10 , heat dissipation fins 20 , heat exchange channel 11 , contact portion 21 , straight hole 211 , heat conduction portion 22 , bell mouth structure 23 , heat dissipation spacer 30 , tapered fins 41 , collar 42 , bolt 43 . DETAILED DESCRIPTION

[0023] The present invention provides a finned heat pipe. To make the purpose, technical solution, and effects of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are only intended to explain the present invention and are not intended to limit the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0025] like Figures 3 to 6 This embodiment discloses a fin heat pipe, including a heat pipe body 10 and heat fins 20. The heat pipe body 10 has multiple heat fins 20 and is arranged in sequence along the axial direction of the heat pipe body 10. The heat pipe body 10 can be expanded and shaped. The expanded and shaped heat pipe body 10 is interference fit with the heat fins 20.

[0026] The finned heat pipe of this embodiment is provided with a plurality of heat dissipation fins 20 on the heat dissipation pipe body 10. When a heat exchange medium is introduced into the heat dissipation pipe body 10, the heat of the heat exchange medium can be conducted to the heat dissipation fins 20 through the heat dissipation pipe body 10, and then conducted to the air through the heat dissipation fins 20. Through the auxiliary heat dissipation of the plurality of heat dissipation fins 20, rapid heat dissipation can be achieved.

[0027] Moreover, the heat pipe body 10 of this embodiment can be expanded and shaped, and the heat pipe body 10 after expansion and shaping is interference fit with the heat dissipation fins 20, without the need for additional settings such as Figure 1 and Figure 2 The locking parts such as the collar 42 and the bolt 43 shown in the figure can expand the outer diameter of the heat pipe body 10 by expansion, so that the heat fins 20 can be firmly fixed on the outside of the heat pipe body 10, which can improve assembly efficiency, simplify the structure and reduce costs.

[0028] Furthermore, the heat exchange channel 11 is provided in the middle of the heat pipe body 10 in the axial direction. During installation, the heat fins 20 are first sequentially sleeved on the outside of the heat pipe body 10, and then one end of the heat exchange channel 11 is blocked with a plug. High-pressure gas or high-pressure liquid is then introduced into the other end of the heat exchange channel 11 to expand and shape the heat pipe body 10. Since the outer diameter of the heat pipe body 10 increases after expansion and shaping, the heat fins 20 are fixed by interference fit, and the heat fins 20 will not loosen. Fixing the heat fins 20 by expansion means is simple to operate and has high production efficiency.

[0029] In the prior art, for example Figure 1and Figure 2 The tapered fins 41 used have a small contact area with the central tube, which results in a low efficiency of the central tube transferring heat to the tapered fins 41. As a result, the heat dissipation performance of the fin heat dissipation tube with this structure is poor. Figure 4 and Figure 5 The heat dissipation fin 20 of this embodiment includes a contact portion 21 and a heat conducting portion 22 connected to one end of the contact portion 21. The contact portion 21 is provided with an axially extending straight hole 211. The inner wall surface of the straight hole 211 is fully aligned with the outer wall surface of the heat dissipation tube body 10. By providing the straight hole 211 and making the inner wall surface of the straight hole 211 fully aligned with the outer wall surface of the heat dissipation tube body 10, the contact portion 21 and the heat dissipation tube body 10 have a larger contact area. Therefore, the heat of the heat exchange medium in the heat exchange channel 11 can be quickly transferred to the heat dissipation fin 20 through the heat dissipation tube body 10, thereby further improving the heat dissipation efficiency.

[0030] Furthermore, the axial length of the contact portion 21 is not less than 5 mm. By using a longer contact portion 21, the contact area between the contact portion 21 and the heat pipe body 10 can be further increased, thereby improving the heat dissipation efficiency. In addition, a heat dissipation gap 30 is formed between two adjacent heat dissipation fins 20. The distance of the heat dissipation gap 30 is not less than 5 mm. By setting a longer heat dissipation gap 30, it is avoided that the heat dissipation space between the two heat guides is too small due to the two heat dissipation fins 20 being too close.

[0031] Furthermore, the thickness of the contact portion 21 is 0.2-0.4 mm. Within this thickness, the structural strength and heat dissipation efficiency of the contact portion 21 are ensured while reducing material costs.

[0032] Furthermore, in this embodiment, the heat pipe body 10 and the contact portion 21 are both tubular structures, and the heat conducting portion 22 is a disc-shaped structure. Before the heat pipe body 10 expands, its outer diameter can be set to 25 mm, and the inner diameter of the straight hole 211 of the contact portion 21 is set to 25.3±0.1 mm. Before the heat pipe body 10 expands, since the inner diameter of the straight hole 211 of the contact portion 21 is larger than the outer diameter of the heat pipe body 10, the heat fin 20 can be axially sleeved on the outside of the heat pipe body 10; after the heat pipe body 10 expands, the outer diameter of the heat pipe body 10 expands by about 0.3 mm, so that the heat pipe body 10 and the straight hole 211 are interference fit, thereby fixing the heat fin 20.

[0033] For further information, please refer to Figure 4 In order to make the structure of the fin heat sink more compact, two adjacent heat sinks 20 are in contact with each other, and all the heat sinks 20 are in contact in sequence. When the heat sink 20 at any position is not firmly attached to the heat sink body 10, the heat sink fins 20 on the left and right sides of the axial direction are used to limit it, which can prevent it from loosening. The structure is ingenious.

[0034] For further information, please refer to Figure 4 A bell-mouth structure 23 is provided at the connection between the contact portion 21 and the heat-conducting portion 22. By providing the bell-mouth structure 23, the heat dissipating fin 20 is easily inserted into the heat dissipating pipe body 10; moreover, one end of the contact portion 21 of the heat dissipating fin 20 abuts against the bell-mouth structure 23 of the adjacent heat dissipating fin 20, so that the two adjacent heat dissipating fins 20 are more firmly matched.

[0035] It should be noted that the heat pipe body 10 used in this embodiment is a round tube, but is not limited to a round tube. A square tube (including a square tube, a hexagonal square tube, etc.) can also be used. Correspondingly, the heat dissipation fins 20 are designed to match the square tube structure. These equivalent variations or replacements are all included in the scope defined by the claims of the invention of this utility model.

[0036] In addition, the length, thickness, inner diameter and other dimensions of the contact portion 21 are merely a preferred embodiment and are not limited to the above dimensions. In actual production, the dimensions can be adjusted accordingly according to the application scenario.

[0037] The above specifically describes the preferred embodiments of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A finned heat pipe, comprising a heat pipe body (10) and heat dissipation fins (20), characterized in that: The heat dissipation fins (20) are provided in plurality and are sequentially arranged along the axial direction of the heat dissipation tube body (10); the heat dissipation tube body (10) can be expanded and shaped; the expanded and shaped heat dissipation tube body (10) and the heat dissipation fins (20) are interference-fitted.

2. The finned heat pipe according to claim 1, characterized in that: The middle part of the heat dissipation pipe body (10) is provided with an axial heat exchange channel (11), and high-pressure gas or high-pressure liquid can be introduced into the heat exchange channel (11) to expand and shape the heat dissipation pipe body (10).

3. The finned heat pipe according to claim 1, characterized in that: The heat dissipation fin (20) comprises a contact portion (21) and a heat conducting portion (22) connected to one end of the contact portion (21); the contact portion (21) is provided with an axially extending straight hole (211); the inner wall surface of the straight hole (211) is fully fitted with the outer wall surface of the heat dissipation tube body (10).

4. The finned heat pipe according to claim 3, characterized in that: The length of the contact portion (21) along the axial direction is not less than 5 mm, a heat dissipation gap (30) is formed between two adjacent heat dissipation fins (20), and the distance of the heat dissipation gap (30) is not less than 5 mm.

5. The finned heat pipe according to claim 3, characterized in that: The thickness of the contact portion (21) is 0.2-0.4 mm.

6. The finned heat pipe according to claim 3, characterized in that: The heat dissipation pipe body (10) and the contact portion (21) both have a circular tube-shaped structure, and the heat conduction portion (22) has a circular sheet-shaped structure.

7. The finned heat pipe according to claim 3, characterized in that: Two adjacent heat dissipation fins (20) are in contact with each other.

8. The finned heat pipe according to claim 7, characterized in that: A bell-mouth structure (23) is provided at the connection between the contact portion (21) and the heat-conducting portion (22), and one end of the contact portion (21) of the heat dissipation fin (20) abuts against the bell-mouth structure (23) of the adjacent heat dissipation fin (20).

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