Micro-channel phase change composite heat sink
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WIZION COMM TECH (SHANGHAI) CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-12
AI Technical Summary
Existing microchannel phase change composite heat sinks lack an installation structure for the phase change material, which makes the phase change material prone to displacement and affects heat dissipation performance. Furthermore, the flow channel structure design is insufficient, resulting in a small contact area between the liquid and the microchannel heat sink, leading to low heat dissipation performance and poor practicality.
A plug-in structure for phase change material with mounting groove and plug was designed. Combined with the plug-in cooperation of positioning block and guide block, rapid installation and positioning are achieved through bolt connection, which increases the flow channel contact area and optimizes the heat dissipation hole design.
It enables rapid installation and positioning of phase change materials, avoids misalignment, improves heat dissipation efficiency and practicality, facilitates disassembly and maintenance, and enhances the overall heat dissipation performance of the radiator.
Smart Images
Figure CN224353656U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of communication technology, specifically to a microchannel phase change composite heat sink. Background Technology
[0002] Microchannel phase change composite heat sinks are high-efficiency heat dissipation devices that combine the advantages of microchannel heat dissipation and phase change materials (PCMs) heat storage. Their substrates typically use thermally conductive metals such as copper or aluminum, with micron-level channels etched (width / depth often 50-500 μm). Heat is carried away by forced convection of a liquid working fluid (such as water or ethylene glycol). Phase change materials (such as paraffin or fatty acids) are embedded in the channel gaps or on the surface, utilizing the latent heat of solid-liquid phase change to absorb peak heat loads. This composite structure combines the high heat flux density heat dissipation capacity of microchannels (up to 1000 W / cm² or more) with the thermal buffering characteristics of phase change materials, enabling the heat source temperature fluctuation to be controlled within ±2℃. Commonly used in high-heat-dissipation scenarios such as chips and new energy batteries, it can improve heat dissipation efficiency by 30%–50% in compact spaces and reduce the system's reliance on active cooling.
[0003] Chinese Utility Model Patent Publication No. CN221631937U discloses a small phase change thermal storage composite heat sink. The specification of this small phase change thermal storage composite heat sink states that the thermal storage material is sealed inside a copper tube / plate, preventing it from flowing to other places and affecting the normal operation of components. Copper has a much higher thermal conductivity than the thermal storage material, allowing heat from the heat source to quickly diffuse to the distant thermal storage material, thereby reducing the thermal resistance between the chip and the thermal storage material. The thermal storage material does not adhere to components, facilitating machine disassembly and maintenance. When used in conjunction with a heat sink, it can reduce the chip's temperature rise rate. However, this small phase change thermal storage composite heat sink lacks a design for the installation structure of the phase change material. During use, the phase change material is prone to displacement, affecting the overall heat dissipation performance. Furthermore, the lack of a flow channel structure results in a small contact area between the liquid and the microchannel heat sink, leading to low heat dissipation performance and poor practicality, making it unsuitable for widespread use. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to provide a microchannel phase change composite heat sink, which can effectively solve the problems of existing technologies that do not have a designed installation structure for phase change materials, which makes the phase change materials prone to displacement during use, affecting the overall heat dissipation performance, and the lack of a flow channel structure, resulting in a small contact area between the liquid and the microchannel heat sink, low heat dissipation performance, poor practicality, and inconvenience for widespread use.
[0005] The technical solution adopted by this utility model is: a microchannel phase change composite heat sink, including a shell and a phase change material disposed at the top of the shell. A microchannel heat sink is disposed on the side of the phase change material away from the shell. A guide block is fixedly installed on the side of the microchannel heat sink away from the phase change material. A multi-pore heat sink is disposed on the side of the microchannel heat sink away from the phase change material. A guide groove, a threaded hole, and a guide groove are formed on the outer wall of the multi-pore heat sink. A guide block is fixedly installed on the inner wall of the shell. A threaded hole is formed on the side of the shell near the phase change material. A bolt that matches the threaded hole and the threaded hole is threadedly connected to the side of the multi-pore heat sink away from the microchannel heat sink. A heat dissipation hole is formed on the side of the multi-pore heat sink away from the microchannel heat sink. A heat dissipation hole, a flow channel, a flow channel, a flow channel, and a flow channel are formed on the side of the microchannel heat sink near the multi-pore heat sink.
[0006] Preferably, the housing has an installation groove on the side near the phase change material, an insert block is fixedly installed on the inner wall of the installation groove, and a slot is provided on the outer wall of the phase change material. The phase change material is adapted to the installation groove, and the insert block and the slot are plugged in for installation.
[0007] Using the above technical solution, workers insert the phase change material into the installation slot and simultaneously insert the plug into the slot, which enables rapid installation of the phase change material. During use, it prevents the phase change material from shifting and affecting the overall heat dissipation performance, making it highly practical.
[0008] Preferably, the shell has a positioning groove one on the side near the phase change material, the microchannel heat sink plate has a positioning block one fixedly installed on the side near the phase change material, the microchannel heat sink plate has a positioning groove two on its outer edge, and the inner wall of the shell has a positioning block two fixedly installed. The positioning block one and the positioning groove one are plugged into each other, and the positioning block two and the positioning groove two are plugged into each other.
[0009] Using the above technical solution, the staff inserts positioning block one into the interior of positioning slot one, and simultaneously inserts positioning block two into the interior of positioning slot two, which enables the rapid installation of the microchannel heat sink and facilitates quick assembly and disassembly during use or assembly.
[0010] Preferably, the first guide block and the first guide groove are connected by an insertion joint, and the second guide block and the second guide groove are connected by an insertion joint.
[0011] With the above technical solution, the staff inserts guide block one into guide groove one and guide block two into guide groove two, which can realize the rapid positioning of the multi-gap heat sink. Without complicated calibration operations, the relative position of the multi-gap heat sink and the shell can be ensured to be accurate, improving installation efficiency, reducing labor and time costs, and making it highly practical.
[0012] Preferably, the bolt extends through the second threaded hole into the interior of the first threaded hole, and the second threaded hole has the same diameter as the first threaded hole.
[0013] With the above technical solution, after the multi-gap heat sink is quickly positioned, the staff can insert the bolt through the second threaded hole and extend it into the first threaded hole to install the multi-gap heat sink. After long-term use, it is convenient to inspect or replace it.
[0014] Preferably, both heat dissipation holes one and two are provided with a plurality of the same type, and the plurality of heat dissipation holes one and two are distributed at equal intervals, with each heat dissipation hole one corresponding to the other one by one.
[0015] The above technical solution, through the design of heat dissipation hole one and heat dissipation hole two, can improve the overall heat dissipation efficiency. The design of multiple heat dissipation holes one and heat dissipation hole two further improves the overall heat dissipation efficiency, making it highly practical.
[0016] Preferably, the cross-section of the second flow channel is S-shaped, and the first, second, third and fourth flow channels are interconnected.
[0017] The above technical solution, through the cooperation of flow channel one, flow channel two, flow channel three and flow channel four, increases the contact area of the liquid, thereby improving the overall heat dissipation efficiency and making it highly practical.
[0018] Compared with the prior art, this utility model provides a microchannel phase change composite heat sink, which has the following beneficial effects:
[0019] 1. This microchannel phase change composite heat sink achieves rapid installation of the phase change material through the cooperation of the phase change material with the mounting groove and the plug and slot. During use, it avoids the phase change material from shifting, which would affect the overall heat dissipation performance. It is highly practical. The microchannel heat sink plate can be quickly installed through the cooperation of positioning block one with positioning groove one and positioning block two with positioning groove two. It is easy to quickly disassemble and assemble during use or assembly. The multi-gap heat sink plate can be quickly positioned through the cooperation of guide block one with guide groove one and guide block two with guide groove two. The multi-gap heat sink plate can be installed through the cooperation of bolts, threaded hole two and threaded hole one. After long-term use, it is easy to inspect or replace it.
[0020] 2. This microchannel phase change composite heat sink increases the contact area between the liquid and the microchannel heat sink plate through the cooperation of channel one, channel two, channel three and channel four, thereby improving the overall heat dissipation efficiency and making it highly practical. The design of heat dissipation hole one and heat dissipation hole two can improve the overall heat dissipation efficiency. The design of multiple heat dissipation holes one and heat dissipation hole two further improves the overall heat dissipation efficiency and makes it highly practical. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;
[0023] Figure 3 This is a schematic diagram of the phase change material installation structure of this utility model;
[0024] Figure 4 This is a schematic diagram of the installation structure of the microchannel heat sink of this utility model;
[0025] Figure 5 This is a schematic diagram of the installation structure of the multi-gap heat dissipation plate of this utility model.
[0026] The components are as follows: 1. Shell; 2. Phase change material; 3. Mounting groove; 4. Insert block; 5. Slot; 6. Positioning groove one; 7. Microchannel heat sink; 8. Positioning block one; 9. Positioning groove two; 10. Positioning block two; 11. Guide block one; 12. Multi-gap heat sink; 13. Guide groove two; 14. Guide block two; 15. Threaded hole one; 16. Threaded hole two; 17. Guide groove one; 18. Bolt; 19. Heat dissipation hole one; 20. Heat dissipation hole two; 21. Flow channel one; 22. Flow channel two; 23. Flow channel three; 24. Flow channel four. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Example 1:
[0029] like Figure 1-5As shown, this utility model provides a microchannel phase change composite heat sink, including a shell 1 and a phase change material 2 disposed at the top of the shell 1. A microchannel heat sink 7 is disposed on the side of the phase change material 2 away from the shell 1. A guide block 11 is fixedly installed on the side of the microchannel heat sink 7 away from the phase change material 2. A multi-pore heat sink 12 is disposed on the side of the microchannel heat sink 7 away from the phase change material 2. The outer wall of the multi-pore heat sink 12 is provided with a guide groove 13, a threaded hole 16, and a guide groove 17. The inner wall of the shell 1... A guide block 14 is fixedly installed. A threaded hole 15 is opened on the side of the housing 1 near the phase change material 2. A bolt 18 that matches the threaded hole 16 and the threaded hole 15 is threadedly connected to the side of the multi-gap heat sink 12 away from the microchannel heat sink 7. A heat dissipation hole 19 is opened on the side of the multi-gap heat sink 12 away from the microchannel heat sink 7. A heat dissipation hole 20, a flow channel 21, a flow channel 22, a flow channel 3, and a flow channel 4 are opened on the side of the microchannel heat sink 7 near the multi-gap heat sink 12.
[0030] Specifically, the housing 1 has a mounting groove 3 on the side near the phase change material 2. An insert 4 is fixedly installed on the inner wall of the mounting groove 3, and a slot 5 is provided on the outer wall of the phase change material 2. The phase change material 2 is compatible with the mounting groove 3, and the insert 4 and slot 5 are plugged into each other. The advantage is that workers can quickly install the phase change material 2 by inserting it into the mounting groove 3 and simultaneously inserting the insert 4 into the slot 5. During use, this prevents the phase change material 2 from shifting, which would affect the overall heat dissipation performance, making it highly practical.
[0031] Specifically, a positioning groove 6 is provided on the side of the shell 1 near the phase change material 2, a positioning block 8 is fixedly installed on the side of the microfluidic heat sink 7 near the phase change material 2, a positioning groove 9 is provided on the outer edge of the microfluidic heat sink 7, and a positioning block 10 is fixedly installed on the inner wall of the shell 1. Positioning block 8 and positioning groove 6 are connected by an insertion joint, and positioning block 10 and positioning groove 9 are also connected by an insertion joint. The advantage is that the operator can quickly install the microfluidic heat sink 7 by inserting positioning block 8 into the positioning groove 6 and simultaneously inserting positioning block 10 into the positioning groove 9, which facilitates quick assembly and disassembly during use or assembly.
[0032] Specifically, guide block 11 and guide groove 17 are installed by insertion, and guide block 2 14 and guide groove 2 13 are installed by insertion. The advantage is that by inserting guide block 11 into guide groove 17 and guide block 2 14 into guide groove 2 13, the multi-gap heat sink 12 can be quickly positioned without complex calibration operations. This ensures accurate relative positioning between the multi-gap heat sink 12 and the housing 1, improving installation efficiency, reducing labor and time costs, and making it highly practical.
[0033] Example 2:
[0034] like Figure 2-5 As shown, as an improvement on the previous embodiment, to further improve the overall heat dissipation efficiency, specifically, multiple identical heat dissipation holes 19 and 20 are provided, and the multiple heat dissipation holes 19 and 20 are distributed at equal intervals, with one-to-one correspondence between heat dissipation holes 19 and 20. The advantage is that the design of heat dissipation holes 19 and 20 improves the overall heat dissipation efficiency, and the design of multiple heat dissipation holes 19 and 20 further enhances the overall heat dissipation efficiency, making it highly practical.
[0035] Specifically, the cross-section of flow channel 22 is S-shaped, and flow channels 1 (21), 2 (22), 3 (23), and 4 (24) are interconnected. The advantage is that the cooperation of flow channels 1 (21), 2 (22), 3 (23), and 4 (24) increases the contact area of the liquid, thereby improving the overall heat dissipation efficiency and making it highly practical.
[0036] Specifically, bolt 18 extends through threaded hole 16 into threaded hole 15, and threaded hole 16 has the same diameter as threaded hole 15. The advantage is that after quickly positioning the multi-gap heat sink 12, the operator can easily install the multi-gap heat sink 12 by extending bolt 18 through threaded hole 16 into threaded hole 15. This also facilitates maintenance or replacement after prolonged use.
[0037] Working Principle: During installation, the operator inserts the phase change material 2 into the mounting slot 3 and the insert block 4 into the slot 5, enabling rapid installation of the phase change material 2. This prevents the phase change material 2 from shifting during use, thus avoiding impact on overall heat dissipation performance and demonstrating high practicality. Subsequently, the operator inserts positioning block 1 8 into positioning slot 1 6 and positioning block 2 10 into positioning slot 2 9, enabling rapid installation of the microchannel heat sink 7. This facilitates quick assembly and disassembly during use or assembly. Then, the operator inserts guide block 1 11 into guide slot 17 and guide block 2 14 into guide slot 2 13, enabling rapid positioning of the multi-gap heat sink 12. This eliminates the need for complex calibration operations, ensuring accurate relative positioning between the multi-gap heat sink 12 and the housing 1, improving installation efficiency, reducing labor and time costs, and enhancing practicality. The multi-gap heat sink 12 is highly efficient. After quickly positioning the multi-gap heat sink 12, the operator inserts the bolt 18 through the threaded hole 16 and extends it into the threaded hole 15, thus enabling the installation of the multi-gap heat sink 12. After long-term use, it is easy to inspect or replace. During use, the phase change material 2 absorbs and stores the heat emitted by the environment. The heat emitted when the equipment is turned on is absorbed, and when the equipment is stopped, the internal heat decreases, and the phase change material 2 releases heat. This cycle repeats to achieve the purpose of cooling. The design of the heat dissipation hole 19 and the heat dissipation hole 20 can improve the overall heat dissipation efficiency. The design of multiple heat dissipation holes 19 and 20 further improves the overall heat dissipation efficiency, making it highly practical. The cooperation of the flow channels 1 21, 2 22, 3 23 and 4 24 increases the contact area of the liquid, thereby improving the overall heat dissipation efficiency, making it highly practical.
[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A microchannel phase change composite heat sink, comprising a housing (1) and a phase change material (2) disposed at the top of the housing (1), characterized in that: A microchannel heat sink (7) is provided on the side of the phase change material (2) away from the shell (1). A guide block (11) is fixedly installed on the side of the microchannel heat sink (7) away from the phase change material (2). A multi-pore heat sink (12) is provided on the side of the microchannel heat sink (7) away from the phase change material (2). A guide groove (13), a threaded hole (16), and a guide groove (17) are provided on the outer wall of the multi-pore heat sink (12). A guide block (14) is fixedly installed on the inner wall of the shell (1). The shell (1) is close to the phase change material. One side of the material (2) is provided with a threaded hole (15). The side of the multi-hole heat sink (12) away from the micro-channel heat sink (7) is threaded with a bolt (18) that is compatible with the threaded hole (26) and the threaded hole (15). The side of the multi-hole heat sink (12) away from the micro-channel heat sink (7) is provided with a heat dissipation hole (19). The side of the micro-channel heat sink (7) close to the multi-hole heat sink (12) is provided with a heat dissipation hole (20), a flow channel (21), a flow channel (22), a flow channel (23), and a flow channel (24).
2. The microchannel phase change composite heat sink according to claim 1, characterized in that: The housing (1) has an installation groove (3) on the side close to the phase change material (2). An insert (4) is fixedly installed on the inner wall of the installation groove (3). A slot (5) is provided on the outer wall of the phase change material (2). The phase change material (2) is compatible with the installation groove (3). The insert (4) and the slot (5) are plugged in.
3. The microchannel phase change composite heat sink according to claim 1, characterized in that: The shell (1) has a positioning groove 1 (6) on the side near the phase change material (2), the microchannel heat sink (7) has a positioning block 1 (8) fixedly installed on the side near the phase change material (2), the microchannel heat sink (7) has a positioning groove 2 (9) on the outer edge, and the inner wall of the shell (1) has a positioning block 2 (10) fixedly installed. The positioning block 1 (8) and the positioning groove 1 (6) are connected by insertion, and the positioning block 2 (10) and the positioning groove 2 (9) are connected by insertion.
4. The microchannel phase change composite heat sink according to claim 1, characterized in that: The first guide block (11) and the first guide groove (17) are connected by a plug-in joint, and the second guide block (14) and the second guide groove (13) are connected by a plug-in joint.
5. A microchannel phase change composite heat sink according to claim 1, characterized in that: The bolt (18) extends through the second threaded hole (16) into the interior of the first threaded hole (15), and the second threaded hole (16) has the same diameter as the first threaded hole (15).
6. The microchannel phase change composite heat sink according to claim 1, characterized in that: The first heat dissipation hole (19) and the second heat dissipation hole (20) are provided with a plurality of the same type. The plurality of the first heat dissipation hole (19) and the second heat dissipation hole (20) are distributed at equal intervals, and the first heat dissipation hole (19) and the second heat dissipation hole (20) correspond one-to-one.
7. A microchannel phase change composite heat sink according to claim 1, characterized in that: The cross-section of the second flow channel (22) is S-shaped, and the first flow channel (21), the second flow channel (22), the third flow channel (23) and the fourth flow channel (24) are connected.