Heat sink, heat sink module, and method of assembling a heat sink
By setting grooves on the heat sink and using rollers to deform and hold the heat pipe section, combined with fin design, the problem of low connection efficiency between the heat pipe and the heat sink is solved, achieving efficient heat conduction and dissipation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHAMP TECH OPTICAL (FOSHAN) CORP
- Filing Date
- 2024-11-27
- Publication Date
- 2026-05-29
Smart Images
Figure CN122107825A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of heat dissipation technology, and in particular to heat sinks, heat dissipation modules, and methods for assembling heat sinks. Background Technology
[0002] The connection methods between heat pipes and heat sinks in a radiator include soldering and non-soldering. When heat pipes and heat sinks are connected by soldering, solder paste needs to be applied between the heat pipes and heat sinks to increase the contact cross-section, which in turn increases the contact thermal resistance and reduces the heat dissipation efficiency of the radiator. When heat pipes and heat sinks are connected by non-soldering, the heat conduction efficiency between the heat pipes is low, resulting in low heat dissipation efficiency of the radiator. Summary of the Invention
[0003] This application provides a heat sink with high heat dissipation efficiency to solve the above-mentioned problems.
[0004] A heat sink includes a heat sink plate, a heat pipe assembly, and first fins. The heat sink plate includes a first mounting surface, a second mounting surface, and a side surface, the side surface connecting the first mounting surface and the second mounting surface. The heat sink plate has a first groove formed by a recess in the first mounting surface, the first groove penetrating the side surface. The heat pipe assembly includes multiple heat pipes, each heat pipe including a first mounting section and an extension section. The first mounting sections of the multiple heat pipes are located in the first groove, any two adjacent first mounting sections are in contact with each other, and the extension section extends from the first mounting section in a direction away from the side surface. The first fins are disposed on the second mounting surface.
[0005] In one possible embodiment of this application, the heat sink is further provided with a through hole, which communicates with the first groove; the first fin includes a body portion and a protrusion, the body portion is in contact with the first mounting surface, the protrusion is received in the through hole, and a portion of the first fin is received in the through hole and in contact with the first mounting section.
[0006] In one possible embodiment of this application, the heat sink further includes a first sidewall, a second sidewall, and a bottom wall, which together form the first groove; any two adjacent first mounting sections are in contact with each other, one of the first mounting sections located on both sides is in contact with the first sidewall, and the other first mounting section located on both sides is in contact with the second sidewall.
[0007] In one possible embodiment of this application, both the first sidewall and the second sidewall extend along a second direction, and the bottom wall is perpendicular to the first direction; the cross-section of the first groove along the second direction includes a first dimension and a second dimension that are parallel to each other, the two ends of the first dimension coincide with the first mounting surface, the two ends of the second dimension coincide with the first sidewall and the second sidewall, and the first dimension is smaller than the second dimension.
[0008] In one possible embodiment of this application, the first groove has a trapezoidal cross-section perpendicular to the second direction, and the first direction and the second direction are perpendicular to each other.
[0009] In one possible embodiment of this application, the radiator further includes a heat sink component; a second groove is also provided on the heat sink plate, the second groove being formed by the recess of the second mounting surface, the second groove communicating with the through hole; the heat sink component is housed in the second groove and exposed to the through hole, and the heat sink component connects the first mounting section and the body portion.
[0010] In one possible embodiment of this application, the radiator further includes a second fin, each heat pipe further includes a second mounting section, the extension section connects the first mounting section and the second mounting section, and the second fin connects to the second mounting section.
[0011] In one possible embodiment of this application, the first mounting surface and the opposing surfaces of the first mounting section are on the same plane.
[0012] A heat dissipation module includes a working element and a heat sink; wherein the working element and the heat sink are connected.
[0013] A method for assembling a heat sink includes: providing a heat sink plate, including a first mounting surface, a second mounting surface, and a side surface, the side surface connecting the first mounting surface and the second mounting surface; the heat sink plate having a first groove formed by the first mounting surface being recessed along a first direction, the first groove penetrating the side surface; mounting a first fin on the second mounting surface; providing a plurality of heat pipes, each heat pipe including a first mounting segment; placing the first mounting segments of the plurality of heat pipes side by side in the first groove; providing a first roller and a second roller, the radius of the first roller being smaller than the radius of the second roller; using the first roller and the second roller to roll the first mounting segment to deform the first mounting segment and hold it in the first groove; wherein, during the rolling process, the rotation axis of the first roller can float along the first direction, and the rotation axis of the second roller is fixed.
[0014] The heat sink provided in this application embodiment holds the first mounting sections of multiple heat pipes in the first groove of the heat sink plate. Two adjacent first mounting sections can contact each other, and heat can be conducted between the two adjacent first mounting sections, which is beneficial to improving the heat conduction efficiency of the heat pipe group, thereby improving the heat dissipation efficiency of the heat sink. The fact that two adjacent first mounting sections can contact each other is beneficial to increasing the heat conduction efficiency per unit area, thereby further improving the heat dissipation efficiency of the heat sink. In addition, the first mounting section of the heat pipe can directly contact the working element, which is beneficial to reducing the contact thermal resistance, thereby further improving the heat dissipation efficiency of the heat sink. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of the heat dissipation module provided in an embodiment of this application.
[0016] Figure 2 for Figure 1 A schematic diagram of the heat sink structure.
[0017] Figure 3 for Figure 2 The exploded view of the radiator shown.
[0018] Figure 4 for Figure 2 The exploded view of the radiator shown is taken from another angle.
[0019] Figure 5 for Figure 2 The diagram shows a cross-sectional view of the heat sink along the VV direction.
[0020] Figure 6 for Figure 3 The diagram shows the structure of the heat sink, heat sink components, and the first fin.
[0021] Figure 7 To be Figure 6 The diagram shows the heat sink, heat sink components, and first fins assembled together, along with a schematic diagram of the heat pipe assembly.
[0022] Figure 8 To be Figure 7 The diagram shows a heat pipe assembly being rolled in the first groove of a heat sink.
[0023] Figure 9 This is a schematic diagram of the heat pipe assembly being pressed by the first and second rollers in an embodiment of this application.
[0024] Figure 10 This is a schematic diagram showing the deformation of the first mounting section of the first heat pipe located in the first groove during the rolling process, as provided in an embodiment of this application.
[0025] Figure 11This is a schematic diagram showing the deformation of the first mounting section of the first heat pipe during the rolling process, as provided in an embodiment of this application. Detailed Implementation
[0026] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this application; the described embodiments are merely some, not all, of the embodiments described in this application.
[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes all and any combination of one or more of the associated listed items.
[0028] In the various embodiments of this application, for ease of description and not limitation, the term "connection" used in the patent application specification and claims is not limited to physical or mechanical connections, whether direct or indirect. Terms such as "upper," "lower," "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship also changes accordingly.
[0029] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the heat dissipation module 200 provided in an embodiment of this application. The heat dissipation module 200 includes a heat sink 100 and a working element 210. The working element 210 is connected to the heat sink 100 and can be fixed to the heat sink 100 by a nut 220. The working element 210 generates heat during operation, and the heat sink 100 is used to quickly dissipate the heat generated by the working element 210 to maintain the working environment of the working element 210 within a suitable temperature range.
[0030] Please see Figure 2 , Figure 2 for Figure 1The diagram shows the structure of the heat sink 100. The heat sink 100 may include a heat sink 10, a heat pipe assembly 20, a first fin 30, and a second fin 40. One end of the heat pipe assembly 20 and the first fin 30 are fixed to the heat sink 10, and the second fin 40 and the other end of the heat pipe assembly 20 are fixed. The working element 210 and the heat pipe assembly 20 are fixed to one end of the heat sink 10. When the working element 210 generates heat, the heat can be transferred to the first fin 30 through the heat sink 10, and the heat can also be transferred towards the second fin 40 through the heat pipe assembly 20. The heat is mainly dissipated through the first fin 30 and the second fin 40.
[0031] Please see Figure 3 and Figure 4 , Figure 3 for Figure 2 The exploded view of the radiator 100 shown. Figure 4 for Figure 2 The exploded view of the heat sink 100 shown is taken from another angle. The heat sink 10 is generally rectangular and includes a first mounting surface 11 and a second mounting surface 12 disposed opposite to each other. The first mounting surface 11 and the second mounting surface 12 are generally planar. The heat sink 10 also includes a side surface 13 that connects the first mounting surface 11 and the second mounting surface 12.
[0032] For ease of explanation, the first direction L1, the second direction L2, and the third direction L3 intersect each other. The first mounting surface 11 and the second mounting surface 12 are arranged along the first direction L1, and the side surface 13 is parallel to the third direction L3. In this embodiment, the first direction L1, the second direction L2, and the third direction L3 can be perpendicular to each other. It is understood that in other embodiments, the shape of the heat sink 10 is not limited to a rectangle, but can also be other regular or irregular shapes, in which case the first direction L1, the second direction L2, and the third direction L3 can be adjusted accordingly.
[0033] The heat sink 10 has a first groove 14, which is formed by the first mounting surface 11 recessed towards the first direction L1. The first groove 14 also extends through the side surface 13 along the second direction L2. The heat sink 10 also includes a first side wall 141, a second side wall 142, and a bottom wall 143, which surround and form the first groove 14. The first side wall 141 and the second side wall 142 both extend along the second direction L2, and the bottom wall 143 is perpendicular to the first direction L1.
[0034] The heat pipe assembly 20 includes a plurality of heat pipes 21, with at least two heat pipes 21, and in this embodiment, eight heat pipes 21. Each heat pipe 21 includes a first mounting section 211, an extension section 212, and a second mounting section 213, wherein the extension section 212 connects the first mounting section 211 and the second mounting section 213.
[0035] Multiple first mounting segments 211 are located in the first groove 14 and arranged along the third direction L3. Any two adjacent first mounting segments 211 are in contact with each other. One of the first mounting segments 211 located on both sides is in contact with the first sidewall 141, and the other first mounting segment 211 located on both sides is in contact with the second sidewall 142. The multiple first mounting segments 211 are in close contact with the heat sink 10, so that the multiple first mounting segments 211 are engaged in the first groove 14. The multiple first mounting segments 211 are also in contact with the bottom wall 143.
[0036] The surfaces of the multiple first mounting segments 211 facing away from the bottom wall 143 and the first mounting surface 11 are on the same plane. The first mounting surface 11 and the surfaces of the first mounting segments 211 facing away from the bottom wall 143 are used to connect with the working element 210. When the working element 210 generates heat, the heat can be quickly transferred to the heat sink 10 through the heat pipe 21, thereby increasing the rate of heat conduction.
[0037] Please see Figure 5 , Figure 5 for Figure 2 The diagram shows a cross-sectional view of the heat sink 100 along the VV direction. The first groove 14 has a cross-section perpendicular to the second direction L2, which includes a first dimension D1 and a second dimension D2 that are parallel to each other. The two ends of the first dimension D1 coincide with the first mounting surface 11, and the two ends of the second dimension D2 coincide with the first sidewall 141 and the second sidewall 142. The first dimension D1 is smaller than the second dimension D2.
[0038] Specifically, in this embodiment, the first groove 14 has a trapezoidal cross section perpendicular to the second direction L2. The opening size of the first groove 14 is small and the internal size is large. The first groove 14 is used to accommodate and fix the first mounting segment 211 to prevent the first mounting segment 211 from detaching from the first groove 14.
[0039] The extension segment 212 extends from the first mounting segment 211 toward the side 13 away from the heat sink 10. Adjacent extension segments 212 are spaced apart, which increases the heat dissipation area and improves the heat dissipation efficiency of the heat sink 100 to some extent.
[0040] The second mounting section 213 is used to connect with the second fin 40. The second fin 40 can be mounted on both opposite surfaces of the second mounting section 213. The distance between two adjacent second mounting sections 213 is greater than the distance between two adjacent extension sections 212, which helps to increase the area used to set the second fin 40, thereby further improving the heat dissipation efficiency of the radiator 100.
[0041] The first fin 30 is mounted on the second mounting surface 12 of the heat sink 10. The heat transferred by the heat sink 10 can be transferred to the first fin 30 for heat dissipation.
[0042] The heat sink 10 may also have through holes 15, which penetrate the bottom wall 143 and the second mounting surface 12 along the first direction L1, and are connected to the first groove 14. The number of through holes 15 is not limited; in this embodiment, there are two through holes 15.
[0043] The first fin 30 includes a body portion 31 and a protrusion 32. The protrusion 32 is located on the surface of the body portion 31, and the body portion 31 contacts the second mounting surface 12. The protrusion 32 is recessed into the through hole 15. The protrusion 32 contacts the first mounting section 211, meaning that the heat pipe 21 can directly transfer heat to the first fin 30, reducing the heat transfer interface and thus reducing contact thermal resistance, thereby improving the heat dissipation efficiency of the radiator 100.
[0044] The radiator 100 may further include a heat sink 50. A second groove 16 may also be formed on the heat sink 10, the second groove 16 being recessed from the second mounting surface 12, and the second groove 16 communicating with the through hole 15. The heat sink 50 is housed in the second groove 16 and exposed in the through hole 15. The heat sink 50 connects the first mounting section 211 and the body portion 31, and is used to quickly transfer and disperse heat to the first fins 30 to improve the heat dissipation efficiency of the radiator 100.
[0045] Please see Figure 6 , Figure 7 and Figure 8 The heat sink 100 can be assembled in the following manner: Step S1: Please refer to Figure 6 First, assemble the first fin 30, the heat sink 10, and the heat sink 50. The heat sink 50 is housed in the second groove 16 and is located between the first fin 30 and the heat sink 10.
[0046] Step S2: Please refer to Figure 7 and Figure 8The first mounting sections 211 of the plurality of heat pipes 21 are arranged side by side in the first groove 14 of the heat sink 10; a first roller 61 and a second roller 62 are provided, the radius of the first roller 61 being smaller than the radius of the second roller 62, and the first roller 61 and the second roller 62 are used to roll the first mounting section 211 so that the first mounting section 211 is deformed and held in the first groove 14; wherein, during the rolling process, the rotation axis of the first roller 61 can float along the first direction L1, and the rotation axis of the second roller 62 is fixed.
[0047] Please refer to the following: Figure 9 The specific steps of the rolling process may include: firstly, using the first roller 61 to pre-press the first heat pipe 21, so that the first mounting section 211 undergoes a certain deformation and comes into contact with the first sidewall 141 and the second sidewall 142. Then, the first roller 61 and the second roller 62 simultaneously reciprocate along the second direction L2.
[0048] During the rolling process, the first roller 61 is mainly used to roll the first mounting section 211 to deform the first mounting section 211. The first roller 61 can float up and down during the rolling process to facilitate the slow deformation of the first mounting section 211, so as to prevent the heat pipe 21 from being damaged due to excessive stress in the first mounting section 211. The second roller 62 is mainly used to flatten the multiple first mounting sections 211 so that the surface of the deformed heat pipe 21 can remain flush.
[0049] During the rolling process, the surface of the first roller 61 is closer to the first mounting surface 11 than the surface of the second roller 62, so that the first roller 61 exerts a stronger force on the first mounting section 211, thereby causing the first mounting section 211 to deform.
[0050] Please see Figure 10 and Figure 11 The height of the first groove 14 along the first direction L1 is a, and the height of the first mounting segment 211 along the first direction L1 before being pressed into the first groove 14 is b, which satisfies that b > a. This is beneficial for the first mounting segment 211 to contact the bottom wall 143 after being pressed into the first groove 14, and at the same time, the surface of the first mounting segment 211 can be on the same plane as the first mounting surface 11.
[0051] The first groove 14 has a first dimension D1 along the first direction L1. Before the first mounting segment 211 is pressed into the first groove 14, the width of the first mounting segment 211 along the third direction L3 is c, satisfying: D1 > n × c, where n is the number of heat pipes 21. After the first mounting segment 211 is placed in the first groove 14, there is a gap between the first mounting segment 211 and the first sidewall 141 and the second sidewall 142. After the rolling step, the first mounting segment 211 deforms and comes into contact with the first sidewall 141 and the second sidewall 142.
[0052] Before each first mounting segment 211 is pressed into the first groove 14, the first mounting surface 11 has an arc surface 2112, which is used to contact the first roller 61 and the second roller 62. This allows the first mounting segment 211 to deform along the third direction L3 and be held in the first groove 14 after the first roller 61 and the second roller 62 roll the first mounting segment 211.
[0053] The radiator 100 provided in this application embodiment holds the first mounting sections 211 of a plurality of heat pipes 21 in the first groove 14 of the heat sink 10. Two adjacent first mounting sections 211 can contact each other, and heat can be conducted between the two adjacent first mounting sections 211, which is beneficial to improving the heat conduction efficiency of the heat pipe group 20, thereby improving the heat dissipation efficiency of the radiator 100. The fact that two adjacent first mounting sections 211 can contact each other is beneficial to increasing the heat conduction efficiency per unit area, thereby further improving the heat dissipation efficiency of the radiator 100. In addition, the first mounting sections 211 of the heat pipes 21 can directly contact the working element 210, which is beneficial to reducing the contact thermal resistance, thereby further improving the heat dissipation efficiency of the radiator 100.
[0054] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.
Claims
1. A radiator, characterized in that, include: A heat sink includes a first mounting surface, a second mounting surface, and a side surface. The side surface connects the first mounting surface and the second mounting surface. The heat sink has a first groove formed by a recess in the first mounting surface and extends through the side surface. A heat pipe assembly includes multiple heat pipes, each heat pipe including a first mounting section and an extension section. The first mounting section of the multiple heat pipes is located in a first groove, any two adjacent first mounting sections are in contact with each other, and the extension section extends from the first mounting section in a direction away from the side. as well as The first fin is disposed on the second mounting surface.
2. The radiator according to claim 1, characterized in that, The heat sink also has a through hole, which communicates with the first groove; the first fin includes a body and a protrusion, the body is in contact with the first mounting surface, the protrusion is received in the through hole, and a portion of the first fin is received in the through hole and in contact with the first mounting section.
3. The radiator according to claim 1, characterized in that, The heat sink further includes a first sidewall, a second sidewall, and a bottom wall, which together form the first groove; any two adjacent first mounting sections are in contact with each other, one of the first mounting sections on both sides is in contact with the first sidewall, and the other first mounting section on both sides is in contact with the second sidewall.
4. The radiator according to claim 3, characterized in that, Both the first sidewall and the second sidewall extend along the second direction, and the bottom wall is perpendicular to the first direction; the first groove has a cross section perpendicular to the second direction, which includes a first dimension and a second dimension that are parallel to each other, the two ends of the first dimension coincide with the first mounting surface, the two ends of the second dimension coincide with the first sidewall and the second sidewall, and the first dimension is smaller than the second dimension.
5. The radiator according to claim 4, characterized in that, The first groove has a trapezoidal cross-section perpendicular to the second direction, and the first direction and the second direction are perpendicular to each other.
6. The radiator according to any one of claims 2-5, characterized in that, The radiator also includes a heat dissipation pipe; a second groove is also provided on the heat dissipation plate, the second groove is formed by the recess of the second mounting surface, the second groove is connected to the through hole; the heat dissipation pipe is housed in the second groove and exposed in the through hole, the heat dissipation pipe connects the first mounting section and the main body.
7. The radiator according to any one of claims 1-5, characterized in that, The radiator further includes a second fin, and each heat pipe further includes a second mounting section, the extension section connecting the first mounting section and the second mounting section, and the second fin connecting the second mounting section.
8. The radiator according to any one of claims 1-5, characterized in that, The surfaces of the first mounting surface and the first mounting section that are opposite to each other are on the same plane.
9. A heat dissipation module, characterized in that, include: Working elements; as well as The heat sink as described in any one of claims 1-8; The working element and the heat sink are connected.
10. A method for assembling a radiator, characterized in that, include: A heat sink is provided, including a first mounting surface, a second mounting surface and a side surface, the side surface connecting the first mounting surface and the second mounting surface, the heat sink having a first groove, the first groove being formed by the first mounting surface being recessed along a first direction, and the first groove penetrating the side surface; The first fin is mounted on the second mounting surface; A plurality of heat pipes are provided, each heat pipe including a first mounting section, and the first mounting sections of the plurality of heat pipes are arranged side by side in the first groove; as well as A first roller and a second roller are provided, wherein the radius of the first roller is smaller than the radius of the second roller. The first roller and the second roller are used to roll the first mounting section so that the first mounting section is deformed and held in the first groove. During the rolling process, the rotation axis of the first roller can float along the first direction, while the rotation axis of the second roller is fixed.