A phase change heat sink with a heat exchanger plate
By using a heat spreader made of graphite aluminum and a symmetrical insert post design, combined with an aluminum alloy shell, the problems of low heat dissipation efficiency and displacement in existing technologies are solved, achieving efficient heat diffusion and positioning fixation, and improving heat exchange efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WIZION COMM TECH (SHANGHAI) CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-03
AI Technical Summary
In existing technologies, the heat sink of a single vapor chamber is inefficient in scenarios with high power density and uneven heat flux density, and is prone to displacement due to thermal expansion and contraction, which affects its use.
The heat spreader body is made of graphite aluminum, combined with two layers of phase change material and symmetrically distributed sleeves and posts to form a multi-level heat dissipation path. The aluminum alloy shell provides rigid support to ensure uniform heat conduction and fixed positioning.
It achieves efficient heat diffusion and fixed positioning, avoiding displacement caused by thermal expansion and contraction, and improving heat exchange efficiency and heat dissipation capacity.
Smart Images
Figure CN224460346U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radiator technology, specifically a phase change radiator with a heat exchange plate. Background Technology
[0002] As the power density of electronic devices such as high-performance chips, new energy vehicle batteries, and data center servers continues to increase, heat dissipation efficiency has become a key factor restricting the performance, lifespan, and safety of equipment. Traditional heat dissipation technologies such as metal heat sinks and fan cooling have gradually revealed many problems when facing scenarios with high power density and uneven heat flux. Therefore, the research and development of efficient heat dissipation technologies has become a key focus of the industry. Among them, phase change materials and vapor chambers have received widespread attention due to their unique thermal management advantages.
[0003] Chinese Utility Model Patent Publication No. CN202406450U discloses a radiator with a heat spreader plate. The specification of the radiator with a heat spreader plate discloses that the connection between the heat dissipation structure, the metal base plate and the metal top cover plate is sealed by welding or ultrasonic metal welding, which has a good sealing effect and can ensure the vacuum degree inside the heat spreader plate. However, the radiator with a heat spreader plate only has a single heat spreader plate, which can easily lead to slow heat dissipation. In addition, the lack of a heat spreader plate alignment structure makes it easy for the heat spreader plate to shift due to thermal expansion and contraction, thus affecting normal use. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to provide a heat sink with phase change and heat spreader, which can effectively solve the problems in the prior art.
[0005] The technical solution adopted by this utility model is: a phase change heat sink with a heat exchange plate, including an outer shell and a heat exchange plate body. A placement groove is opened at the inner edge of the outer shell, and a plug is fixedly installed at the inner edge of the outer shell. A first phase change material is placed in the outer shell through the placement groove. The heat exchange plate body is placed at the end of the first phase change material away from the outer shell. A second phase change material is placed at the end of the heat exchange plate body away from the outer shell. A sleeve is fixedly installed at the end of the heat exchange plate body near the placement groove. The sleeve and the plug are plugged in.
[0006] Preferably, a connecting sleeve is fixedly installed on both the inner and outer edges of the outer shell, and a first conduit and a second conduit are provided at the ends of the first phase change material and the second phase change material near the connecting sleeve. The first conduit and the second conduit pass through the connecting sleeve and extend to the outer edge of the outer shell.
[0007] The above technical solution fixes the connecting sleeve to the inner and outer edges of the outer shell, providing a through channel for the first and second conduits to form a circulation path for the phase change material. The connecting sleeve also protects the first and second conduits, preventing them from bending and being damaged when they come into contact with the outer shell.
[0008] Preferably, the heat exchange plate body is located between the first phase change material and the second phase change material, and the heat exchange plate body is a graphite aluminum heat exchange plate.
[0009] Through the above technical solution, the design of graphite aluminum material allows the heat spreader to have both the high thermal conductivity of graphite and the lightweight properties of aluminum. It can quickly diffuse the local high temperature generated by the heat source to the entire plate. Moreover, it is located between two layers of phase change material. When one side of the phase change material absorbs heat, the heat spreader quickly conducts the heat to the other side of the phase change material. By utilizing the latent heat of phase change of both sides of the phase change material to absorb heat simultaneously, the heat dissipation capacity is expanded.
[0010] Preferably, the sleeve and the post are adapted to each other, and two identical sleeves and posts are provided, which are symmetrically distributed about the center line of the outer shell.
[0011] The above technical solution, through the design of two sets of symmetrically distributed sleeves and posts, enables the heat spreader body to be quickly positioned during placement, fixing the heat spreader body in the placement groove and avoiding displacement caused by thermal expansion and contraction.
[0012] Preferably, a through groove is provided on the side of the heat spreader away from the outer shell, and the through grooves are provided in multiple identical and equally spaced manner.
[0013] Through the above technical solution, the equally spaced through grooves on the heat exchange plate can increase the contact area between the plate and the phase change material, improve the heat exchange efficiency, and guide the flow direction of the phase change material after melting, thus avoiding uneven phase change caused by local heat accumulation.
[0014] Preferably, the outer shell is an aluminum alloy shell, and the first phase change material, the heat spreader body, and the second phase change material are all located at the inner end of the outer shell.
[0015] The above technical solution, with its aluminum alloy shell, provides low density and good thermal conductivity, offering rigid support for internal components and serving as a heat dissipation surface for direct heat exchange with the outside air. The layered design of the first phase change material, the heat spreader body, and the second phase change material creates a multi-level heat dissipation path.
[0016] Preferably, the first phase change material and the second phase change material have the same structure.
[0017] By employing the above technical solution, and by designing that the first phase change material and the second phase change material have the same structure, it is possible to ensure that the heat absorption and heat release processes are synchronized, thus avoiding heat conduction imbalance caused by the difference in phase change temperature.
[0018] Compared with the prior art, this utility model provides a heat sink with phase change and heat exchange plate, which has the following beneficial effects:
[0019] 1. The heat sink with phase change and heat spreader plate, through the design of graphite aluminum material, can make the heat spreader plate body have the high thermal conductivity of graphite and the lightweight characteristics of aluminum. It can quickly diffuse the local high temperature generated by the heat source to the entire plate body. Moreover, it is located between two phase change materials. When one phase change material absorbs heat, the heat spreader plate body quickly conducts heat to the other phase change material. It utilizes the latent heat of phase change of both phase change materials to absorb heat simultaneously, thereby expanding the heat dissipation capacity.
[0020] 2. The phase change heat exchanger with a heat exchange plate, through the design of two sets of symmetrically distributed sleeves and posts, can quickly position the heat exchange plate body during placement, fixing the heat exchange plate body in the placement slot and avoiding displacement caused by thermal expansion and contraction. The equally spaced through slots on the heat exchange plate body can increase the contact area between the plate body and the phase change material, thereby improving the heat exchange efficiency. 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 mounting structure of the outer shell and connecting sleeve of this utility model. Figure 1 ;
[0023] Figure 3 This is a schematic diagram of the mounting structure of the outer shell and connecting sleeve of this utility model. Figure 2 ;
[0024] Figure 4 This is a schematic diagram showing the disassembled structure of the outer shell and the heat spreader body of this utility model. Figure 1 ;
[0025] Figure 5 This is a schematic diagram showing the disassembled structure of the outer shell and the heat spreader body of this utility model. Figure 2 ;
[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the first and second phase change materials of this utility model. Figure 1 ;
[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the first and second phase change materials of this utility model. Figure 2 .
[0028] The components are: 1. Outer shell; 2. Connecting sleeve; 3. Placement slot; 4. Insertion post; 5. First phase change material; 6. First conduit; 7. Heat spreader body; 8. Insertion sleeve; 9. Through slot; 10. Second phase change material; 11. Second conduit. Detailed Implementation
[0029] 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.
[0030] Example 1: As Figure 1-7 As shown, the present invention provides a phase change heat sink with a heat exchanger plate, including an outer shell 1 and a heat exchanger plate body 7. A placement groove 3 is provided on the inner edge of the outer shell 1, and a plug 4 is fixedly installed on the inner edge of the outer shell 1. A first phase change material 5 is placed on the outer shell 1 through the placement groove 3. The heat exchanger plate body 7 is placed on the end of the first phase change material 5 away from the outer shell 1. A second phase change material 10 is placed on the end of the heat exchanger plate body 7 away from the outer shell 1. A plug sleeve 8 is fixedly installed on the end of the heat exchanger plate body 7 near the placement groove 3. The plug sleeve 8 and the plug 4 are plugged in.
[0031] Specifically, connecting sleeves 2 are fixedly installed on both the inner and outer edges of the outer shell 1. A first conduit 6 and a second conduit 11 are provided at the ends of the first phase change material 5 and the second phase change material 10 near the connecting sleeve 2. The first conduit 6 and the second conduit 11 pass through the connecting sleeve 2 and extend to the outer edge of the outer shell 1. The advantage is that fixing the connecting sleeve 2 to the inner and outer edges of the outer shell 1 provides a through channel for the first conduit 6 and the second conduit 11, forming a circulation path for the phase change material. Furthermore, the connecting sleeve 2 can protect the first conduit 6 and the second conduit 11, preventing them from easily bending when in contact with the outer shell 1, thus avoiding damage.
[0032] Specifically, the heat spreader body 7 is located between the first phase change material 5 and the second phase change material 10. The heat spreader body 7 is a graphite aluminum heat spreader. The advantage is that the design of graphite aluminum material allows the heat spreader body 7 to have both the high thermal conductivity of graphite and the lightweight properties of aluminum. It can quickly diffuse the local high temperature generated by the heat source to the entire plate. Moreover, it is located between the two phase change materials. When one phase change material absorbs heat, the heat spreader body 7 quickly conducts the heat to the other phase change material. It utilizes the latent heat of phase change of both phase change materials to absorb heat simultaneously, thereby expanding the heat dissipation capacity.
[0033] Specifically, the sleeve 8 and the post 4 are adapted to each other. There are two identical sleeves 8 and posts 4. The two sleeves 8 and posts 4 are symmetrically distributed about the center line of the outer shell 1. The advantage is that the design of two sets of symmetrically distributed sleeves 8 and posts 4 can enable the heat spreader body 7 to be quickly positioned when placed, fixing the heat spreader body 7 in the placement groove 3 and avoiding displacement caused by thermal expansion and contraction.
[0034] Example 2: Figure 2-7 As shown, this is an improvement on the previous embodiment.
[0035] Specifically, a through groove 9 is provided on the side of the heat spreader body 7 away from the outer shell 1. There are multiple through grooves 9 of the same size and they are evenly distributed. The advantage is that the evenly spaced through grooves 9 on the heat spreader body 7 can increase the contact area between the plate and the phase change material, enhance the heat exchange efficiency, and guide the flow direction of the phase change material after melting, avoiding uneven phase change caused by local heat accumulation.
[0036] Specifically, the outer shell 1 is an aluminum alloy shell, and the first phase change material 5, the heat spreader body 7, and the second phase change material 10 are all located at the inner end of the outer shell 1. The advantage is that by designing the outer shell 1 as an aluminum alloy shell, it can have the characteristics of low density and good thermal conductivity, which can provide rigid support for the internal components and can also serve as a heat dissipation surface to directly exchange heat with the outside air. At the same time, the layered design of the first phase change material 5, the heat spreader body 7, and the second phase change material 10 can form a multi-level heat dissipation path.
[0037] Specifically, the first phase change material 5 and the second phase change material 10 have the same structure. The advantage is that by designing the first phase change material 5 and the second phase change material 10 to have the same structure, the heat absorption and heat release processes can be synchronized, avoiding the imbalance of heat conduction caused by the difference in phase change temperature.
[0038] Working Principle: During use, the connecting sleeve 2 is fixed to the inner and outer edges of the outer shell 1, providing a through channel for the first conduit 6 and the second conduit 11, forming a circulation path for the phase change material. The connecting sleeve 2 also protects the first and second conduits 6 and 11, preventing them from bending and being damaged when in contact with the outer shell 1. The graphite-aluminum design allows the heat spreader body 7 to combine the high thermal conductivity of graphite with the lightweight properties of aluminum, rapidly dissipating the localized high temperature generated by the heat source to the entire plate. Located between two layers of phase change material, when one side of the phase change material absorbs heat, the heat spreader body 7 quickly transfers the heat to the other side, utilizing the latent heat of phase change of both sides to expand the heat dissipation capacity. The design of two symmetrically distributed sleeves 8 and posts 4 allows the heat spreader body 7 to... When placed, the main body 7 can quickly position the heat exchange plate 7 within the placement slot 3, preventing displacement caused by thermal expansion and contraction. The equally spaced through slots 9 on the heat exchange plate 7 can increase the contact area between the plate and the phase change material, enhance heat exchange efficiency, and guide the flow direction of the melted phase change material, avoiding uneven phase change caused by local heat accumulation. The aluminum alloy shell 1 has the characteristics of low density and good thermal conductivity, providing rigid support for internal components and serving as a heat dissipation surface for direct heat exchange with the outside air. At the same time, the layered design of the first phase change material 5, the heat exchange plate 7, and the second phase change material 10 can form a multi-level heat dissipation path. The identical structure of the first phase change material 5 and the second phase change material 10 ensures that the heat absorption and release processes are synchronized, avoiding heat conduction imbalance caused by phase change temperature differences.
[0039] 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 heat sink for a phase change heat spreader comprising an outer housing (1) and a heat spreader body (7), characterised in that: The outer shell (1) has a placement groove (3) at its inner edge. A plug (4) is fixedly installed at the inner edge of the outer shell (1). The outer shell (1) has a first phase change material (5) placed in the placement groove (3). A heat spreader body (7) is placed at the end of the first phase change material (5) away from the outer shell (1). A second phase change material (10) is placed at the end of the heat spreader body (7) away from the outer shell (1). A sleeve (8) is fixedly installed at the end of the heat spreader body (7) near the placement groove (3). The sleeve (8) and the plug (4) are plugged in.
2. A phase change heat equalizing plate heat spreader according to claim 1, wherein: The outer shell (1) is fixedly equipped with connecting sleeves (2) on both its inner and outer edges. The first phase change material (5) and the second phase change material (10) are provided with a first conduit (6) and a second conduit (11) at one end near the connecting sleeve (2). The first conduit (6) and the second conduit (11) pass through the connecting sleeve (2) and extend to the outer edge of the outer shell (1).
3. A phase change thermal equalizing panel heat spreader according to claim 1, wherein: The heat exchange plate body (7) is located between the first phase change material (5) and the second phase change material (10), and the heat exchange plate body (7) is a graphite aluminum heat exchange plate.
4. A phase change thermal equalizing panel heat spreader according to claim 1, wherein: The sleeve (8) is adapted to the post (4). There are two identical sleeves (8) and posts (4). The two sleeves (8) and posts (4) are symmetrically distributed about the center line of the outer shell (1).
5. A phase change thermal equalizing panel heat spreader according to claim 1, wherein: The heat exchange plate body (7) has a through groove (9) on the side away from the outer shell (1), and there are multiple identical through grooves (9) that are evenly distributed.
6. A phase change thermal equalizing panel heat spreader according to claim 1, wherein: The outer shell (1) is an aluminum alloy shell, and the first phase change material (5), the heat spreader body (7), and the second phase change material (10) are all located at the inner end of the outer shell (1).
7. A phase change thermal equalizing panel heat spreader according to claim 1, wherein: The first phase change material (5) and the second phase change material (10) have the same structure.