Heat dissipation structure

Abstract

This invention relates to the field of heat dissipation and provides a heat dissipation structure. The heat dissipation structure includes a cold plate thermally coupled to an object to be cooled. A cooling channel is formed within the cold plate, and a turbulence-inducing support is disposed within the cooling channel. A connecting assembly is also included, through which the cold plate is mounted to the object to be cooled. This heat dissipation structure, by incorporating turbulence-inducing supports within the cooling channel, significantly improves the pressure resistance and structural strength of the ultra-thin cold plate, while also disrupting the fluid boundary layer and enhancing turbulence, thus significantly improving heat exchange efficiency and preventing deformation of the thin cold plate under pressure. It achieves on-demand enhanced heat exchange without increasing flow resistance, solving the problem of balancing heat exchange and pressure drop in turbulence-inducing structures. Furthermore, by employing liquid cooling heat exchange, it avoids the high energy consumption and noise issues associated with air cooling, enabling highly efficient heat exchange within a limited space.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation, and provides a heat dissipation structure. Background Technology

[0002] The statements herein are provided only as background information in connection with this application and do not necessarily constitute prior art.

[0003] With the rapid development of technology, various intelligent products are emerging in an endless stream, and the demand for high-performance computing is also increasing. As storage hard drives become smaller, their power consumption requirements are also increasing, leading to increasingly serious heat dissipation problems. Related technologies mainly use air cooling or liquid cooling for heat dissipation. However, air cooling requires high-speed fans to dissipate the generated heat, but this method increases the power consumption of the fans themselves and the noise generated during system operation. In liquid cooling, the installation stability between the cold plate and the object being cooled is poor, affecting heat transfer efficiency. Summary of the Invention

[0004] This invention provides a heat dissipation structure to address the shortcomings of air cooling, which has high energy consumption and noise, and liquid cooling, which has poor heat transfer efficiency and stability, in related technologies.

[0005] This invention provides a heat dissipation structure, comprising: A cold plate is thermally coupled to the object to be cooled, and a cooling channel is formed inside the cold plate, with a turbulence support component provided inside the cooling channel; A connecting assembly is used to mount the cold plate to the object to be cooled.

[0006] According to one embodiment of the present invention, the turbulence support includes protrusions that are spaced apart in the cooling channel.

[0007] According to one embodiment of the present invention, the turbulence support includes a baffle, the extension direction of which is angularly positioned relative to the flow direction of the cooling medium in the cooling channel.

[0008] According to one embodiment of the present invention, the turbulence support includes: The protrusions are spaced apart in the cooling channel; A baffle, wherein the extending direction of the baffle is set at an angle to the flow direction of the cooling medium in the cooling channel.

[0009] According to one embodiment of the present invention, the turbulence support is arranged non-uniformly in the cooling channel, and the arrangement density of the turbulence support gradually increases along the flow direction of the cooling medium.

[0010] According to one embodiment of the present invention, the connecting assembly includes a support portion disposed on the outside of the cold plate, the support portion being configured as a guide rail for providing guidance and limiting during the assembly of the object to be cooled.

[0011] According to one embodiment of the present invention, a heat-conducting element is provided between the cold plate and the object to be cooled, and the heat-conducting element is provided on both sides of the cold plate so that the two adjacent objects to be cooled can be cooled respectively on both sides of a single cold plate.

[0012] According to one embodiment of the present invention, the thermal conductivity of the heat-conducting element is 5 W / Km, the thickness of the heat-conducting element is 0.5 mm, and when the cold plate is installed on the object to be cooled, the compressed thickness of the heat-conducting element after being compressed is 0.25 mm.

[0013] According to one embodiment of the present invention, the thickness of the cold plate is 1.5 mm, the wall thickness of the cold plate is 0.5 mm, and the width of the cooling channel is 0.5 mm.

[0014] According to one embodiment of the present invention, it further includes a water distributor, wherein an inflow channel and an outflow channel are formed inside the water distributor, and the cooling channel is in fluid communication with the inflow channel and the outflow channel; The inflow channel of the water distributor is configured as a variable diameter pipe, and the cross-sectional area of ​​the inflow channel gradually decreases along the flow direction of the cooling medium to compensate for friction loss.

[0015] According to one embodiment of the present invention, the inflow channel is provided with a throttling orifice at the branch inlet connected to the cold plate, and the orifice diameter gradually increases along the flow direction of the cooling medium.

[0016] The heat dissipation structure provided by the embodiments of the present invention, by incorporating turbulence support members within the cooling channel, significantly improves the pressure resistance and structural strength of the ultra-thin cold plate, while also disrupting the fluid boundary layer and enhancing turbulence, thereby significantly improving heat exchange efficiency and preventing deformation of the thin cold plate under pressure. It achieves on-demand enhanced heat exchange without increasing flow resistance, solving the problem of balancing heat exchange and pressure drop in turbulence-driven structures. Furthermore, by employing liquid cooling heat exchange, it avoids the high energy consumption and noise issues associated with air cooling, enabling highly efficient heat exchange within a limited space. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic perspective view of the heat dissipation structure provided by the present invention applied to the front window hard drive of a server mounted on the chassis.

[0019] Figure 2 This is a schematic three-dimensional diagram of the heat dissipation structure provided by the present invention applied to the front window hard drive of a server.

[0020] Figure 3 This is a schematic perspective view of the heat dissipation structure provided by the present invention.

[0021] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0022] Figure 5 It is a schematic 3D diagram of the hard drive and chassis installation structure.

[0023] Figure 6 It is a schematic 3D diagram of the hard drive installation slot.

[0024] Figure 7 This is a schematic perspective view of the cold plate and heat-conducting component provided by the present invention.

[0025] Figure 8 This is a schematic cross-sectional view of the first type of cold plate provided by the present invention.

[0026] Figure 9 This is a schematic cross-sectional view of the second type of cold plate provided by the present invention.

[0027] Figure 10 This is a schematic cross-sectional view of the third type of cold plate provided by the present invention.

[0028] Figure 11 This is a schematic perspective view of the water distributor provided by the present invention.

[0029] Figure 12 This is a schematic cross-sectional view of the water distributor provided by the present invention.

[0030] Figure label: 10. Chassis; 20. Mounting slot; 100. Cold plate; 102. Item to be cooled; 104. Cooling channel; 106. Baffle support; 108. Connecting assembly; 110. Protrusion; 112. Baffle; 114. Support; 116. Heat-conducting component; 118. Water distributor; 120. Inflow channel; 122. Outflow channel. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] The specific terms used in this specification are for illustrative purposes only and are not intended to limit the illustrated embodiments. For example, expressions such as "same" and "identical" not only indicate a strictly identical state, but also indicate a state with tolerances or differences in the degree of functionality. For example, expressions indicating relative or absolute arrangement such as "in a certain direction," "along a certain direction," "side by side," "perpendicular," "centered on," "concentric," or "coaxial" not only strictly indicate such an arrangement, but also indicate a state of relative displacement by tolerances or angles or distances with the same degree of functionality.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "multiple" means two or more. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified. In the description of the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, B1 and / or B2 can represent: B1 existing alone, B1 and B2 existing simultaneously, and B2 existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] like Figures 1 to 12 As shown, an embodiment of the present invention provides a heat dissipation structure, including: The cold plate 100 is thermally coupled to the object to be cooled 102. A cooling channel 104 is formed inside the cold plate 100, and a turbulence support 106 is provided inside the cooling channel 104. The cold plate 100 is mounted on the object to be cooled 102 via the connecting component 108.

[0037] According to the heat dissipation structure provided in the embodiments of the present invention, by providing a turbulence support 106 within the cooling channel 104, the pressure resistance and structural strength of the ultra-thin cold plate 100 are significantly improved, and the fluid boundary layer is disrupted, enhancing turbulence and significantly improving heat exchange efficiency, while preventing the thin cold plate 100 from deforming under pressure. On-demand enhanced heat exchange is achieved without increasing flow resistance, solving the problem of balancing heat exchange and pressure drop in turbulence-driven structures. Furthermore, by employing liquid cooling heat exchange, the high energy consumption and noise issues caused by air cooling are avoided, enabling highly efficient heat exchange within a limited space.

[0038] Please continue reading Figures 1 to 12 The heat dissipation structure provided in this embodiment of the invention is mainly used for liquid cooling of the hard drive in the front window of the server. The heat dissipation structure is composed of a cold plate 100, a turbulence support 106 and a connecting component 108, which can achieve efficient heat dissipation without changing the existing hard drive structure.

[0039] Of course, this heat dissipation structure can also be used to dissipate heat from other objects 102, such as the chassis 10, switches, routers, hard drive racks, etc. in a server.

[0040] See also Figures 1 to 3 The following description uses the heat dissipation structure provided in the embodiment of the present invention applied to the front window hard drive of a server as an example.

[0041] In this embodiment of the invention, the cold plate 100 can be a flat heat exchange component and is thermally coupled to the object to be cooled 102. It should be noted that the thermal coupling connection mentioned here means that heat exchange can be formed between the cold plate 100 and the object to be cooled 102. Specifically, the heat exchange between the cold plate 100 and the object to be cooled 102 can be at least one of heat conduction, heat convection, and heat radiation. In this embodiment of the invention, the cold plate 100 is arranged next to the hard drive to be cooled, that is, heat exchange between the cold plate 100 and the object to be cooled 102 is achieved through heat conduction. Cooling channels 104 for the flow of cooling medium are formed inside the cold plate 100. The cooling medium mentioned here can be water or other cooling media, such as aqueous solutions of ethylene glycol or propylene glycol.

[0042] The cold plate 100 can be made entirely of stainless steel. Its overall thickness, wall thickness, and channel width can be configured according to the dimensions of the hard drive installation space to meet ultra-thin installation requirements. The cooling channel 104 extends along the length of the cold plate 100. The cooling medium flows in from one end of the cold plate 100 and flows out from the other end, exchanging heat with the heat transferred from the hard drive to the cold plate 100. It should be noted that the "one end" and "the other end" of the cold plate 100 mentioned here can be either ends located on the same side of the cold plate 100 or end plates located on opposite sides. In this embodiment of the invention, to reduce the overall structural size of the cold plate 100, the inflow and outflow of the cooling medium are both located at the ends on the same side of the cold plate 100.

[0043] The turbulence support 106 is integrally located inside the cooling channel 104. It can be integrally formed with the cold plate 100 or installed in the cooling channel 104 through other connection methods, such as bonding or snap-fitting. The turbulence support 106 simultaneously supports the cold plate 100, improves its pressure resistance, enhances fluid turbulence, and improves heat exchange efficiency.

[0044] The turbulence support 106 may include protrusions 110 and / or baffles 112. The protrusions 110 are spaced apart within the cooling channel 104, and the baffles 112 extend along the flow direction of the cooling medium. The turbulence support 106 may also be arranged uniformly or non-uniformly within the cooling channel 104. When the turbulence support 106 is installed in the cooling channel 104 in a uniform arrangement, the spacing between any two adjacent turbulence support 106 is equal along the flow direction of the cooling medium. When the turbulence support 106 is installed in the cooling channel 104 in a non-uniform arrangement, the arrangement density of the turbulence support 106 gradually increases along the flow direction of the cooling medium. Alternatively, a higher density arrangement may be used in the area of ​​the cooling channel 104 corresponding to the hard drive to match the heat distribution of the hard drive and enhance heat transfer, while the arrangement density in the area of ​​the cooling channel 104 not corresponding to the hard drive may be relatively reduced.

[0045] The connecting assembly 108 is used to reliably install the cold plate 100 on the side of the hard drive to be cooled. The connecting assembly 108 includes a support part 114 disposed on the outside of the cold plate 100. The support part 114 can be a guide rail structure or other forms. When the support part 114 is in the form of a guide rail structure, the support part 114 can provide guidance and limit during the assembly process of the hard drive and the cold plate 100, so that the cold plate 100 and the hard drive maintain a stable relative position and ensure the heat dissipation and contact effect.

[0046] According to one embodiment of the present invention, the turbulence support 106 includes protrusions 110, which are spaced apart in the cooling channel 104.

[0047] like Figure 8 As shown, in one embodiment of the present invention, the flow-disrupting support 106 may include a protrusion 110. The protrusion 110 may be an elongated boss structure extending along the depth direction of the cooling channel 104, integrally stamped with the cold plate 100 body. Multiple protrusions 110 are arranged in a matrix between the bottom and top surfaces of the cooling channel 104 along the flow direction of the cooling medium and the channel width direction perpendicular to the flow direction. The two ends of the protrusion 110 are fixedly connected to the upper and lower inner walls of the cooling channel 104, respectively, forming an integral support structure within the channel. The elongated boss structure mentioned here may be a straight elongated shape, a wavy elongated shape, etc.

[0048] When dealing with a server with 12 hard drives on the front panel, the protrusions 110 within the cooling channel 104 of a single cold plate 100 can be 8 mm long, 0.5 mm wide, and have the same height as the inner cavity of the cooling channel 104. The distance between two adjacent protrusions 110 along the water flow direction can be 2 mm, and the distance along the channel width direction can be 1 mm. When dealing with a server with 16 hard drives on the front panel, the protrusions 110 within the cooling channel 104 of a single cold plate 100 can be 10 mm long, 0.5 mm wide, and have the same height as the inner cavity of the cooling channel 104. The distance between adjacent protrusions 110 along the water flow direction can be 1.5 mm, and the distance along the channel width direction can be 0.8 mm.

[0049] In this embodiment of the invention, the cross-section of the protrusion 110 can be rectangular, and its extension direction can be inclined at a 15° angle with the mainstream flow direction of the cooling medium, so that when the cooling medium flows through the protrusion 110, a vortex turbulence is formed on the back flow side of the protrusion 110; the cooling medium flows into the cooling channel 104 from the water inlet at the top of the cold plate 100, flows through the spaced protrusions 110, and flows out from the water outlet at the bottom of the cold plate 100, completing the heat exchange cycle.

[0050] In this embodiment, by providing spaced protrusions 110 within the cooling channel 104, the ultra-thin cold plate 100 is provided with stable internal support, significantly improving its structural strength and pressure resistance. It can withstand relatively large cooling water pressure without deformation, bulging, or leakage, thus solving the problem of insufficient structural strength of the ultra-thin cold plate 100. On the other hand, the protrusions 110 break the laminar boundary layer of the cooling water flow, forming continuous vortex turbulence within the channel, thereby improving the heat exchange efficiency between the cold plate 100 and the cooling water and effectively solving the heat dissipation problem under high power consumption conditions of the hard drive.

[0051] This embodiment addresses the heat distribution characteristics of hard drives by specifically designing the size, spacing, and tilt angle of the protrusions 110. This achieves an optimal balance between turbulence and flow resistance while increasing the pressure drop in the flow channel, avoiding the problem of significantly increased water pump power consumption caused by conventional turbulence structures. At the same time, the one-piece elongated protrusions 110 can be directly processed by stamping without complex milling processes, greatly reducing the processing difficulty and manufacturing cost of the ultra-thin cold plate 100, and adapting to the needs of mass production.

[0052] In addition, the matrix-style spacing of the protrusions 110 ensures a uniform flow rate distribution of cooling water within the flow channel, avoiding heat exchange dead zones caused by excessively low local flow rates. This ensures uniform temperature distribution on the surface of the cold plate 100, reduces the temperature difference between two adjacent hard drives, and guarantees the stability and consistency of the multi-hard drive array operation.

[0053] According to one embodiment of the present invention, the turbulence support 106 includes a baffle 112, the extension direction of the baffle 112 being angled to the flow direction of the cooling medium in the cooling channel 104.

[0054] like Figure 9 As shown, in one embodiment of the present invention, the turbulence support 106 may include a baffle 112. The baffle 112 may be a long strip straight plate structure, integrally stamped with the body of the cold plate 100. The extension direction of the baffle 112 is perpendicular or approximately perpendicular to the mainstream flow direction of the cooling medium in the cooling channel 104. The two ends of the baffle 112 are respectively fixedly connected to the upper and lower inner walls of the cooling channel 104 to form a longitudinal flow guiding support structure in the channel.

[0055] For a server with 12 hard drives on the front panel, three parallel baffles 112 can be installed in the cooling channel 104 of a single cold plate 100. For a server with 16 hard drives on the front panel, four parallel baffles 112 can be installed in the cooling channel 104 of a single cold plate 100. By installing the baffles 112, the structural strength of the cold plate 100 can be improved, and the flow time of the cooling medium in the cooling channel 104 can be extended, thereby increasing the heat exchange time between the cooling medium and the hard drives and facilitating efficient heat dissipation of the hard drives.

[0056] Specifically, after the cooling water flows into the cooling channel 104 from the inlet of the cold plate 100, it achieves sufficient heat exchange with the hard disk under the guidance of the baffle 112, and finally flows out from the outlet at the bottom of the cold plate 100. The two ends of the baffle 112 extend to the downstream side of the inlet of the cold plate 100 and the upstream side of the outlet, respectively, forming a flow guide and support for the entire process.

[0057] This embodiment extends the heat exchange time and distance of the cooling channel 104 by setting a baffle 112 arranged at an angle to the water flow direction. This effectively avoids the problem of the cooling water flow having a short heat exchange time in the channel, ensuring that the cooling water can evenly cover the entire heat exchange surface of the cold plate 100. This solves the problems of insufficient heat exchange in the edge area of ​​the conventional cold plate 100 and excessively high temperature at the corners of the hard drive.

[0058] In this embodiment, the baffle 112 adopts an extension design that is completely perpendicular to the water flow direction. While providing full-process structural support for the ultra-thin cold plate 100 and improving the pressure resistance of the cold plate 100, it does not increase the friction resistance of the cooling water flow, significantly reducing the power consumption of the cooling water circulation pump and meeting the energy-saving and consumption-reducing needs of data centers.

[0059] When there are multiple baffles 112, any two adjacent baffles 112 can be set to be parallel to each other along the flow direction of the cooling medium. This makes the internal flow channel layout of the cold plate 100 regular and can be formed in one step by stamping process. The processing accuracy is easy to control, which solves the problems of high processing difficulty and low yield of conventional complex flow channel structures.

[0060] According to one embodiment of the present invention, the turbulence support 106 includes: The protrusions 110 are spaced apart in the cooling channel 104; The baffle 112 extends at an angle to the flow direction of the cooling medium in the cooling channel 104.

[0061] like Figure 10As shown, in one embodiment of the present invention, the turbulence support 106 adopts a combination structure of protrusion 110 and baffle 112. The baffle 112 can be a long strip straight plate structure, integrally stamped with the body of the cold plate 100. The extension direction of the baffle 112 is perpendicular or approximately perpendicular to the mainstream flow direction of the cooling medium in the cooling channel 104. Multiple baffles 112 are arranged in parallel and spaced apart in the cooling channel 104, which can increase the stroke of the cooling channel 104. The protrusion 110 can be a long strip boss structure, integrally stamped with the body of the cold plate 100. Multiple protrusions 110 are arranged in a matrix and spaced apart inside the cooling channel 104. The two ends of the protrusion 110 are fixedly connected to the upper and lower inner walls of the sub-channel, respectively.

[0062] For a server with 12 hard drives on the front panel, three parallel baffles 112 can be installed in the cooling channel 104 of a single cold plate 100, and 12 protrusions 110 are arranged inside the cooling channel 104. For a server with 16 hard drives on the front panel, four parallel baffles 112 can be installed in the cooling channel 104 of a single cold plate 100, and 15 protrusions 110 are arranged inside the cooling channel 104.

[0063] Specifically, after the cooling water flows into the cooling channel 104 from the inlet of the cold plate 100, the flow time of the cooling water in the cooling channel 104 can be extended by the baffle 112. During the flow of the cooling water, the cooling water breaks the laminar boundary layer of the cooling water flow by contacting the protrusions 110, and forms a continuous vortex turbulence in the channel, which improves the heat exchange efficiency between the cold plate 100 and the cooling water, and finally flows out from the outlet of the cold plate 100. That is, the extension length of the baffle 112 covers the entire flow of the cooling channel 104, and the protrusions 110 are arranged at equal intervals along the water flow direction in the cooling channel 104.

[0064] This embodiment achieves the dual effects of extending cooling time and enhancing turbulent heat transfer through the combination structure of baffle 112 and protrusion 110: baffle 112 solves the problems of flow channel deviation and uneven heat transfer, while protrusion 110 solves the problems of laminar boundary layer thickness and low heat transfer efficiency. The combination of the two improves the overall heat transfer performance of cold plate 100, while also ensuring the structural strength of cold plate 100, which can meet the heat dissipation requirements of hard drives with high power consumption and ultra-thin installation space.

[0065] This embodiment, targeting the heat dissipation characteristics of the hard drive, also features a targeted combination design for the number of flow diversions in the baffle 112 and the arrangement density of the protrusions 110. Without changing the thickness of the cold plate 100 or increasing the installation space, it achieves a balance between heat exchange efficiency, structural strength, and flow resistance. This solves the technical contradiction in the prior art where enhanced heat exchange inevitably leads to a significant increase in flow resistance. While improving heat exchange efficiency, the pressure drop increase is far lower than that of conventional turbulence structures.

[0066] The combined structure of the protrusion 110 and the baffle 112 provided in this embodiment extends the cooling channel 104 through the baffle 112 and forms uniform turbulence in the cooling channel 104 through the protrusion 110, making the temperature distribution on the surface of the cold plate 100 more uniform. This solves the problem of local overheating of a single hard drive in a multi-hard drive array, and ensures that when 12 or 16 hard drives are running at full load, the operating temperature of all hard drives is controlled within the rated operating temperature range, thereby improving the operational stability and service life of the server storage system.

[0067] In addition, both the baffle 112 and the protrusion 110 can be integrally stamped with the cold plate 100, without the need for secondary processing. This reduces processing difficulty, increases yield, and ensures good structural consistency, making it suitable for mass production needs. It solves the problems of high processing cost and poor mass production consistency of conventional complex flow channel cold plates 100.

[0068] According to one embodiment of the present invention, the turbulence support 106 is arranged non-uniformly in the cooling channel 104, and the arrangement density of the turbulence support 106 gradually increases along the flow direction of the cooling medium.

[0069] In one embodiment of the present invention, the turbulence support 106 is arranged in a non-uniform manner within the cooling channel 104, specifically including at least one of two arrangement methods: The first arrangement: along the flow direction of the cooling medium, the arrangement density of the turbulence support 106 gradually increases. For a cooling scenario with 12 hard drives, cooling water flows in from the inlet and out from the outlet of the cold plate 100. Along the water flow direction, the turbulence support 106 in the cooling channel 104 is divided into three areas: inlet section, middle section, and outlet section. For example, the arrangement density of the turbulence support 106 in the inlet section is 2 per square centimeter, the arrangement density in the middle section is 4 per square centimeter, and the arrangement density in the outlet section is 6 per square centimeter. For a cooling scenario with 16 hard drives, the arrangement density in the inlet section is 3 per square centimeter, in the middle section is 5 per square centimeter, and in the outlet section is 7 per square centimeter.

[0070] The second arrangement: The cooling channel 104 is divided into a first region and a second region. The first region is the area where the cooling channel 104 faces the heat-generating core area of ​​the hard drive to be cooled, and the second region is the area where the cooling channel 104 faces the non-heat-generating area of ​​the hard drive. The airflow-damping support members 106 are arranged at a first density in the first region and at a second density in the second region, with the first density being greater than the second density. Specifically, the area where the hard drive's controller chip and storage particles are located is the heat-generating core area, and the airflow-damping support members 106 are arranged at a density of 6 per square centimeter in the first region of the cooling channel 104. The side mounting and fixing area of ​​the hard drive is the non-heat-generating area, and the airflow-damping support members 106 are arranged at a density of 2 per square centimeter in the second region of the cooling channel 104.

[0071] The turbulence support 106 is at least one of the aforementioned protrusions 110 and baffles 112. For example, when a combination structure of protrusions 110 and baffles 112 is adopted, the density of protrusions 110 in the first region is three times that in the second region, and the spacing of baffles 112 in the first region is half that in the second region, further enhancing the heat exchange effect of the heat-generating core region.

[0072] This embodiment employs a non-uniform arrangement design with gradually increasing density along the water flow direction, precisely matching the heat exchange characteristics of the cooling water: the cooling water temperature is low at the inlet, with a large temperature difference between it and the hard drive, resulting in ample heat exchange potential. The low-density arrangement reduces the inlet resistance of the flow channel. As the cooling water temperature increases closer to the outlet, the temperature difference between it and the hard drive decreases, leading to a decline in heat exchange capacity. A high-density arrangement is used to enhance turbulence, break the boundary layer, and compensate for the attenuation of heat exchange capacity. Ultimately, this achieves uniform heat exchange efficiency throughout the entire flow of the cold plate 100. Under the premise that the total pressure drop of the flow channel only increases slightly, the overall heat exchange capacity of the cold plate 100 is improved, solving the problems of insufficient heat exchange at the outlet section of conventional uniform flow channels and excessively high temperatures at the tail of the hard drive.

[0073] This embodiment addresses the heat distribution characteristics of hard drives by dividing the cooling channel 104 into a first region corresponding to the core heat-generating area and a second region corresponding to the non-heat-generating area. In the core heat-generating area, a high-density turbulence support 106 is used to enhance heat exchange, while a low-density arrangement is used in the non-heat-generating area to reduce flow resistance. This achieves precise heat dissipation with heat exchange on demand, reducing the peak temperature of the hard drive's main control chip. At the same time, it avoids the problems of excessive flow resistance and increased water pump power consumption caused by indiscriminately enhanced heat exchange, perfectly meeting the policy requirements for energy conservation and emission reduction in data centers.

[0074] The non-uniform arrangement design in this embodiment enhances the heat exchange effect in the target area while reducing the overall flow resistance through low-density areas. This makes the flow distribution of multiple parallel cold plates 100 more uniform, which is better than the flow deviation of conventional uniform flow channels. It ensures the consistency of heat dissipation of all hard drives in the multi-hard drive array and avoids overheating problems caused by insufficient flow to some hard drives.

[0075] According to one embodiment of the present invention, the connecting assembly 108 includes a support portion 114 disposed on the outside of the cold plate 100. The support portion 114 is configured as a guide rail for providing guidance and limiting during the assembly of the object to be cooled 102.

[0076] In one embodiment of the present invention, the connecting component 108 includes a support portion 114. The support portion 114 can be a guide rail-shaped structure integrally stamped on the outer walls of the left and right sides of the cold plate 100 and is arranged along the height direction of the cold plate 100. The cross-section of the guide rail-shaped support portion 114 is one of L-shaped, C-shaped or dovetail-shaped, which is fully adapted to the sliding groove structure of the hard disk mounting slot 20 in the server chassis 10.

[0077] For a cooling scenario with 12 hard drives, guide rail-shaped support parts 114 are provided on both the left and right sides of the 11 cold plates 100, and the guide rail-shaped support parts 114 are integrally stamped with the body of the cold plate 100; for a cooling scenario with 16 hard drives, guide rail-shaped support parts 114 are provided on both the left and right sides of the 15 cold plates 100, and the guide rail-shaped support parts 114 can also be integrally stamped with the body of the cold plate 100.

[0078] During the assembly of the hard drive and the cold plate 100, the guide rail-shaped support 114 is embedded in the sliding groove of the hard drive mounting slot 20 of the server chassis 10, providing precise guidance along the insertion direction for the insertion and installation of the cold plate 100. At the same time, after the cold plate 100 is inserted into place, the cooperation between the sliding groove and the guide rail achieves the lateral and longitudinal positioning of the cold plate 100, so that the heat-conducting component 116 of the cold plate 100 and the heat-generating surface of the hard drive are precisely aligned and attached. The end of the guide rail-shaped support 114 is provided with a positioning protrusion, which cooperates with the positioning groove in the sliding groove of the chassis 10 to achieve axial positioning after the cold plate 100 is inserted into place, ensuring that the contact position between the cold plate 100 and the hard drive is completely consistent every time it is installed.

[0079] This embodiment achieves independent modular installation of the cold plate 100 through the guide rail-shaped support part 114 integrally set on the outer side of the cold plate 100. It does not rely on the integrated structure of the hard drive cage and can be directly adapted to the standard hard drive installation slot 20 of the existing server chassis 10. It does not require major modifications to the original hard drive components of the server and can effectively match the usage scenarios without changing the original components of the hard drive. It solves the problems of existing liquid cooling cold plates 100 requiring customized hard drive cages, high modification costs, and poor adaptability.

[0080] In addition, the guide rail-shaped support 114 in this embodiment simultaneously realizes three major functions: installation guidance, multi-dimensional positioning, and positioning calibration. During the assembly process of the hard drive and the cold plate 100, it can guide the cold plate 100 to be accurately inserted into the installation position, ensuring that the heat-conducting parts 116 on both sides of the cold plate 100 are completely aligned and in contact with the heating surfaces of the two adjacent hard drives. The contact area deviation is small, avoiding the problem of insufficient heat-conducting contact area and reduced heat dissipation effect caused by misalignment, and ensuring the consistency and stability of heat dissipation performance.

[0081] Meanwhile, the integral molding of the guide rail-shaped support 114 and the cold plate 100 eliminates the need for additional mounting fasteners, simplifying the installation process of the cold plate 100. The cold plate 100 can be plugged in and removed without tools, greatly improving the maintenance efficiency of the server hard drive and the cold plate 100. At the same time, the cooperative structure of the guide rail and the slide can effectively offset the vibration during server operation, prevent relative displacement between the cold plate 100 and the hard drive, ensure the continuous and stable contact of the heat conduction component 116, and solve the problem of increased contact thermal resistance and reduced heat dissipation performance caused by server vibration.

[0082] See also Figure 1 , Figure 5 and Figure 6 It is understood that when the heat dissipation structure provided in this embodiment of the invention is applied to the front window hard drive of the server, it will not affect the structure of the chassis 10, the hard drive mounting slot 20, etc. At the same time, the clearance area of ​​the heat dissipation structure on the chassis 10 is fully available for the hard drive to be flexibly plugged and unplugged in the mounting slot 20 to meet the power supply and signal connection of the hard drive.

[0083] The guide rail-shaped support 114 structure of this embodiment can be fully adapted to the standard hard drive mounting slot 20, with strong versatility. It can be directly applied to multi-hard drive heat dissipation scenarios of servers of different brands and models without the need for major structural modifications for different models, and has great engineering promotion value.

[0084] According to one embodiment of the present invention, a heat-conducting element 116 is provided between the cold plate 100 and the object to be cooled 102. The heat-conducting element 116 is provided on both sides of the cold plate 100 so that the two adjacent objects to be cooled 102 can be cooled respectively on both sides of a single cold plate 100.

[0085] In one embodiment of the present invention, a heat-conducting component 116 is provided between the cold plate 100 and the hard drive to be cooled. The heat-conducting component 116 can be a highly thermally conductive flexible heat-conducting pad, which is respectively bonded to the left outer wall and the right outer wall of the cold plate 100 by adhesive backing. This allows the left side of a single cold plate 100 to be in contact with the heating surface of the adjacent hard drive on the left through the heat-conducting component 116, and the right side to be in contact with the heating surface of the adjacent hard drive on the right through the heat-conducting component 116, so that a single cold plate 100 can simultaneously cool two adjacent hard drives on the left and right.

[0086] For a scenario with 12 hard drives, 11 cold plates 100 are arranged side by side, with installation gaps between adjacent cold plates 100. The middle 9 cold plates 100 have heat-conducting components 116 on both sides, allowing each cold plate 100 to cool two hard drives simultaneously. The outermost cold plate 100 has heat-conducting components 116 on only the side facing the hard drive, cooling the outermost hard drive. This achieves full coverage cooling for all 12 hard drives with 11 cold plates 100. For a scenario with 16 hard drives, 15 cold plates 100 are arranged side by side, with heat-conducting components 116 on both sides of the middle 13 cold plates 100. The outermost cold plate 100 has heat-conducting components 116 on only the side facing the hard drive, achieving full coverage cooling for all 16 hard drives with 15 cold plates 100.

[0087] The dimensions of the heat-conducting component 116 are perfectly matched with the contact area between the cold plate 100 and the heat-generating surface of the hard drive. The heat-conducting component 116 completely covers the heat-generating core area where the main control chip and storage particles of the hard drive are located. The edge of the heat-conducting component 116 can also extend 2 mm beyond the edge of the heat-generating core area to ensure no heat exchange dead zones.

[0088] This embodiment achieves simultaneous cooling of two adjacent hard drives by setting heat-conducting components 116 on both sides of the cold plate 100, which greatly improves the space utilization of the cold plate 100. Within the limited installation space of the server front window, it achieves high-density arrangement and full-coverage heat dissipation of 12 / 16 hard drives, solves the core requirement of liquid cooling of multiple hard drives without changing the original hard drive structure, and at the same time greatly reduces the hardware cost and installation complexity of the heat dissipation system.

[0089] Meanwhile, the dual-sided heat-conducting component 116 design in this embodiment makes full use of both heat exchange surfaces of the cold plate 100, improving the utilization rate of the heat exchange area of ​​the cold plate 100 and effectively increasing the heat dissipation capacity within the same installation space. At the same time, the dual-sided heat-conducting component 116 makes the heat load evenly distributed on the left and right sides of the cold plate 100, avoiding thermal deformation and warping caused by heating on one side of the cold plate 100, ensuring the flatness of the fit between the cold plate 100 and the hard drive, reducing the contact thermal resistance, and further improving the heat dissipation efficiency.

[0090] The arrangement of N+1 cold plates 100 cooling N hard drives in this embodiment creates a compact structure where the hard drives and cold plates 100 alternate side by side. This eliminates the need to increase the installation spacing of the hard drives, fully adapts to the installation dimensions of existing server hard drives, and requires no structural modifications to the chassis 10 or the hard drive cage. The modification cost is extremely low, and existing air-cooled servers can be directly upgraded to liquid cooling. This solves the industry pain point that existing liquid cooling solutions require significant structural modifications to the server and have high upgrade costs.

[0091] The design of the dual-sided heat-conducting components 116 allows each hard drive to be in contact with the cold plate 100 on both the left and right sides, forming a double-sided heat dissipation structure. Compared with traditional single-sided heat dissipation, the operating temperature of the hard drive can be significantly reduced, extending the service life of the hard drive. At the same time, it can support the stable operation of high-capacity hard drives with higher power consumption, and adapt to the heat dissipation needs of future high-capacity and high-power storage hard drives.

[0092] According to one embodiment of the present invention, the thermal conductivity of the heat-conducting element 116 is 5 W / Km, the thickness of the heat-conducting element 116 is 0.5 mm, and when the cold plate 100 is installed on the object to be cooled 102, the compressed thickness of the heat-conducting element 116 after being compressed is 0.25 mm.

[0093] In one embodiment of the present invention, the heat-conducting component 116 is a silicon-based flexible heat-conducting pad with a nominal thermal conductivity of 5 W / Km. The initial uncompressed thickness of the heat-conducting component 116 is 0.5 mm. After the cold plate 100 and the hard drive are installed, the heat-conducting component 116 is elastically compressed by the pressure of the hard drive and the cold plate 100. The stable thickness after compression is 0.25 mm, and the compression amount is 50% of the initial thickness.

[0094] The heat-conducting component 116 has excellent compression resilience. Under 50% compression, its compressive stress does not exceed the preset compressive stress, avoiding the problem of hard drive PCB board deformation and component damage caused by excessive compressive stress. The operating temperature of the heat-conducting component 116 can completely cover the operating temperature range of the hard drive. At the highest operating temperature of the hard drive under full load, the thermal conductivity does not decrease, ensuring long-term stable thermal performance. Both sides of the heat-conducting component 116 are coated with pressure-sensitive adhesive with low oil yield, which can be stably bonded to the surface of the cold plate 100, preventing the heat-conducting component 116 from shifting or falling off during hard drive insertion and removal.

[0095] For heat dissipation scenarios with 12 or 16 hard drives, the dimensions of the heat-conducting component 116 are matched with the heat exchange surface of the cold plate 100, allowing the heat-conducting component 116 to completely cover the heat-generating core area of ​​the hard drive. The heat-conducting component 116 can effectively fill the microscopic gap between the heat-generating surface of the hard drive and the surface of the cold plate 100, eliminating the interfacial air layer and reducing contact thermal resistance.

[0096] This embodiment features a precise and customized design for the thermal conductivity, initial thickness, and compressed thickness of the heat-conducting component 116, taking into account the installation gap and heat generation characteristics of the hard drive: a thermal conductivity of 5 watts / Km ensures thermal performance while avoiding the significant cost increase associated with ultra-high thermal conductivity heat-conducting pads; the design of an initial thickness of 0.5 mm and a compressed thickness of 0.25 mm can adapt to the installation gap between the hard drive and the cold plate 100, completely filling the microscopic unevenness between the interfaces, reducing the interface contact thermal resistance, and solving the problems of insufficient compression and high contact thermal resistance of conventional heat-conducting pads.

[0097] In this embodiment, the thermal conductive element 116 adopts a 50% compression design, which ensures complete and tight contact between the thermal pad and the hard drive and cold plate 100, eliminating the interfacial air layer, and avoids the problems of thermal pad creep and stress relaxation caused by excessive compression. During the long-term operation of the server, the compression thickness deviation of the thermal pad is small, and the contact thermal resistance does not increase significantly, ensuring the long-term stability of heat dissipation performance and solving the problem of heat dissipation performance degradation caused by creep after long-term use of conventional thermal pads.

[0098] The design of the thermal conductive component 116 in this embodiment balances thermal conductivity, mechanical performance, and cost. While meeting the heat dissipation requirements of the hard drive, the cost of the thermal conductive component 116 is reduced accordingly, making it suitable for mass production and large-scale liquid cooling upgrades for servers. At the same time, the low compressive stress design avoids damage to the hard drive PCB board and components, ensuring the safe operation of the hard drive.

[0099] The parameters of the heat-conducting component 116 in this embodiment are matched with the thickness setting of the cold plate 100. Without changing the original hard drive installation spacing, the heat-conducting component 116 and the cold plate 100 are compactly installed. This can meet the application scenarios without changing the original hard drive structure and solve the problem that existing liquid cooling solutions require increasing the hard drive installation spacing and changing the original structure.

[0100] According to one embodiment of the present invention, the thickness of the cold plate 100 is 1.5 mm, the wall thickness of the cold plate 100 is 0.5 mm, and the width of the cooling channel 104 is 0.5 mm.

[0101] In one embodiment of the present invention, the cold plate 100 can be made of 304 stainless steel by integral stamping and welding or etching process. The overall thickness of the cold plate 100 is 1.5 mm, the thickness of the upper and lower outer walls of the cold plate 100 is 0.5 mm, the inner cavity height of the internal cooling channel 104 is 0.5 mm, and the width of a single channel of the cooling channel 104 is 0.5 mm.

[0102] The cold plate 100 can be formed by stamping and laser welding two stainless steel plates. The welded cold plate 100 can meet the pressure resistance requirements of the server liquid cooling system. The inner and outer surfaces of the cold plate 100 can also be passivated, which has excellent corrosion resistance and can be in contact with cooling water for a long time without rusting or scaling.

[0103] The cold plate 100 in this embodiment adopts an ultra-thin overall thickness of 1.5 mm, which can be adapted to the narrow installation gap of the hard drive in the front window of the server. No changes need to be made to the original installation spacing or structural components of the hard drive. This solves the pain point that the existing liquid cooling cold plate 100 is too thick and cannot be adapted to the standard hard drive installation space. It realizes the direct liquid cooling upgrade of the standard server hard drive bay with extremely low modification cost.

[0104] This embodiment achieves a balance between structural strength, heat exchange area, and flow capacity within an ultra-thin thickness of 1.5 mm by designing parameters such as upper and lower wall thickness of 0.5 mm and flow channel width of 0.5 mm. The 0.5 mm wall thickness ensures the structural strength and pressure resistance of the cold plate 100, allowing it to withstand working water pressure without deformation or leakage. The 0.5 mm flow channel width maximizes the heat exchange area inside the cold plate 100 while ensuring the flow capacity of the cooling water. The flow channel pressure drop is controlled within a reasonable range, avoiding the risk of blockage and excessive pressure drop caused by an excessively narrow flow channel.

[0105] The parameter design of the ultra-thin cold plate 100 in this embodiment significantly reduces the thermal resistance of the cold plate 100. The path for heat to be transferred from the hard drive surface to the cooling water flow is small, and the thermal resistance is low, which greatly improves the heat transfer efficiency. This allows the heat from the hard drive to be quickly transferred to the cooling water, thereby improving the heat dissipation performance.

[0106] The cold plate 100 in this embodiment adopts a standardized size design and can be mass-produced through mature stamping and welding processes. At the same time, the stainless steel cold plate 100 has excellent corrosion resistance and fatigue resistance, and its service life can meet the requirements of long-term stable operation of the server.

[0107] According to one embodiment of the present invention, it further includes a water distributor 118, which has an inflow channel 120 and an outflow channel 122 formed inside, and the cooling channel 104 is in fluid communication with the inflow channel 120 and the outflow channel 122. The inflow channel 120 of the water distributor 118 is configured as a variable diameter pipe, and the cross-sectional area of ​​the inflow channel 120 gradually decreases along the flow direction of the cooling medium to compensate for friction loss.

[0108] like Figure 12 As shown, in one embodiment of the present invention, a water distributor 118 is also included. The water distributor 118 can be machined from aluminum alloy and can be divided into upper and lower parts. The interior of the water distributor 118 is separated by a partition to form independent inflow channels 120 and outflow channels 122. The inflow channels 120 are in fluid communication with the inlets of the cooling channels 104 of all cold plates 100, and the outflow channels 122 are in fluid communication with the outlets of the cooling channels 104 of all cold plates 100, so that all cold plates 100 form a parallel connection structure.

[0109] For a cooling scenario with 12 hard drives, the inflow channel 120 of the water distributor 118 is connected to the inlet of each of the 11 cold plates 100, and the outflow channel 122 is connected to the outlet of each of the 11 cold plates 100. For a cooling scenario with 16 hard drives, the inflow channel 120 of the water distributor 118 is connected to the inlet of each of the 15 cold plates 100, and the outflow channel 122 is connected to the outlet of each of the 15 cold plates 100.

[0110] The inflow channel 120 of the water distributor 118 is configured as a tapered reducing pipe, with the flow cross-sectional area of ​​the inflow channel 120 gradually decreasing along the flow direction of the cooling medium. For example, in the 12-plate configuration, the inner diameter of the total inlet end of the inflow channel 120 can be 10 mm. Along the water flow direction, the inner diameter of the inflow channel 120 can decrease by 0.5 mm after passing through each branch interface of the cold plate 100, and the inner diameter can decrease to 5 mm at the end of the inflow channel 120. In the 16-plate configuration, the inner diameter of the total inlet end of the inflow channel 120 can be 12 mm. The inner diameter can decrease by 0.5 mm after passing through each branch interface, and the inner diameter at the end can decrease to 4.5 mm. The central axis of the inflow channel 120 is perpendicular to the central axis of the inlet of the cold plate 100. After the cooling water enters the inflow channel 120 from the total inlet, it flows along the reducing pipe and is simultaneously distributed to the branch interfaces of each cold plate 100, entering the cooling channel 104 of the cold plate 100.

[0111] This embodiment achieves parallel connection of 11 or 15 cold plates 100 through water distributor 118. Only one set of main inlet and main outlet water pipes is needed to realize the cooling water circulation of all cold plates 100, which greatly simplifies the internal piping layout of the server, reduces the number of pipe joints, reduces the leakage risk of the liquid cooling system, and makes installation and maintenance more convenient.

[0112] In this embodiment, the inflow channel 120 adopts a variable diameter design with a gradually decreasing cross-sectional area along the flow direction. By gradually reducing the cross-sectional area of ​​the downstream channel, the static pressure of the fluid in the downstream channel is gradually increased, compensating for the friction loss along the inflow channel 120. This makes the inlet static pressure of each cold plate 100 branch interface on the inflow channel 120 tend to be consistent, which can control the flow deviation of 11 / 15 parallel cold plates 100 within the threshold. This solves the pain points of conventional equal diameter water distributors 118, such as large near-end flow, small far-end flow, and uneven flow distribution of each cold plate 100, ensuring uniform heat dissipation of all hard drives.

[0113] The variable diameter water distributor 118 design in this embodiment achieves uniform flow distribution of multiple branch cooling plates 100 without adding an additional throttling structure or increasing the overall system pressure drop. Compared with the conventional equal diameter water distributor 118 and throttling orifice scheme, the overall system pressure drop is reduced, the power consumption of the cooling water circulation pump is reduced, and the energy-saving effect of the liquid cooling system is further improved, which is in line with the energy-saving and emission-reduction requirements of data centers.

[0114] In this embodiment, the water distributor 118 can use an integrally molded partition to separate the inlet and outlet water channels without additional sealing structures, thus avoiding the risk of cross-flow of inlet and outlet water and ensuring high structural reliability. At the same time, the branch interfaces of the water distributor 118 can be connected to the inlet and outlet of the cold plate 100 by welding or quick-connect couplings, which provides high connection strength and good sealing performance. Under a certain working water pressure, it can still ensure no leakage, meeting the long-term stable operation requirements of the server liquid cooling system.

[0115] According to one embodiment of the present invention, the inflow channel 120 is provided with a throttling orifice at the branch inlet connected to the cold plate 100, and the orifice diameter gradually increases along the flow direction of the cooling medium.

[0116] In one embodiment of the present invention, the inflow channel 120 of the water distributor 118 is provided with a throttling hole at the branch inlet connected to each cold plate 100. The throttling hole can be a through hole that penetrates the inner wall of the inflow channel 120 and the branch interface, and the diameter of the throttling hole gradually increases along the flow direction of the cooling medium.

[0117] For a parallel configuration of 11 cold plates with 12 hard drives, along the direction of cooling water flow, the orifice diameter of the first branch inlet (closest to the main inlet) can be 1.0 mm, the orifice diameter of the second branch inlet can be 1.1 mm, and so on, with the orifice diameter of each subsequent branch increasing by 0.1 mm, and the orifice diameter of the eleventh branch inlet (farthest from the main inlet) can be 2.0 mm. For a parallel configuration of 15 cold plates with 16 hard drives, along the direction of water flow, the orifice diameter of the first branch inlet can be 0.8 mm, the orifice diameter of each subsequent branch can increase by 0.1 mm, and the orifice diameter of the fifteenth branch inlet can be 2.2 mm.

[0118] In addition, the edge of the throttling orifice can be rounded, with a radius of 0.1 mm, to avoid eddies at the edge of the throttling orifice and increase local resistance. The length of the throttling orifice can be 1 mm, consistent with the wall thickness of the inflow channel 120. The center line of the throttling orifice coincides with the center line of the water inlet of the cold plate 100, so that the cooling water enters the cooling channel 104 of the cold plate 100 directly after passing through the throttling orifice.

[0119] This embodiment limits the flow of the near-end branch and compensates for the flow of the far-end branch by setting a throttling orifice with a gradually increasing diameter along the flow direction at the branch inlet. This, together with the variable-diameter inflow channel 120, forms a dual flow balancing mechanism, which reduces the flow deviation of the 11 / 15 parallel cold plates 100 and achieves extremely uniform flow distribution. This eliminates the problem of insufficient flow of the far-end cold plate 100 and overheating of the corresponding hard drive, and ensures that the operating temperature deviation of all 12 / 16 hard drives is balanced when running at full load.

[0120] Compared with conventional fixed-diameter throttling orifice designs, the throttling orifice in this embodiment adopts a gradually increasing orifice diameter design along the flow direction, matching the static pressure differences at the inlet of each branch. The orifice diameter of the near-end branch is small and the throttling resistance is large, which offsets the excessively high inlet static pressure at the near end. The orifice diameter of the far-end branch is large and the throttling resistance is small, which compensates for the static pressure loss at the far end. Without changing the variable-diameter flow channel design, it achieves fine adjustment of flow distribution. The orifice diameter gradient can be flexibly adjusted according to different parallel schemes of cold plates 100, making it highly adaptable.

[0121] The combined design of the throttling orifice and the variable diameter inflow channel 120 in this embodiment improves the flow balancing effect compared to a single variable diameter channel or a single throttling orifice solution. While ensuring uniform flow distribution, it does not significantly increase the power consumption of the water pump, thus balancing heat dissipation uniformity and system energy saving.

[0122] The throttling orifice structure of this embodiment can be formed in one step during the machining of the water distributor 118 without additional assembly processes. The machining accuracy is easy to control, the cost is low, and there are no moving parts, so the structure has high reliability. It can run for a long time without clogging or performance degradation, ensuring the long-term stable operation of the liquid cooling system.

[0123] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat dissipation structure, characterized in that, include: A cold plate is thermally coupled to the object to be cooled, and a cooling channel is formed inside the cold plate, with a turbulence support component provided inside the cooling channel; A connecting assembly is used to mount the cold plate to the object to be cooled.

2. The heat dissipating structure according to claim 1, wherein The turbulence support includes protrusions that are spaced apart in the cooling channel.

3. The heat dissipating structure according to claim 1, wherein The turbulence support includes a baffle, the extension direction of which is angled to the flow direction of the cooling medium in the cooling channel.

4. The heat dissipating structure according to claim 3, wherein The turbulence support includes: The protrusions are spaced apart in the cooling channel; A baffle, wherein the extending direction of the baffle is set at an angle to the flow direction of the cooling medium in the cooling channel.

5. The heat dissipating structure according to any one of claims 2 to 4, characterized in that, The turbulence-disrupting supports are arranged non-uniformly within the cooling channel, and their density gradually increases along the flow direction of the cooling medium.

6. The heat dissipating structure according to any one of claims 1 to 4, wherein The connecting component includes a support portion disposed on the outside of the cold plate. The support portion is configured as a guide rail to provide guidance and positioning during the assembly of the object to be cooled.

7. The heat dissipating structure according to any one of claims 1 to 4, wherein A heat-conducting component is provided between the cold plate and the object to be cooled. The heat-conducting component is disposed on both sides of the cold plate so that the two sides of a single cold plate can respectively cool two adjacent objects to be cooled.

8. The heat dissipating structure according to claim 7, wherein The thermal conductivity of the heat-conducting component is 5 W / Km, and the thickness of the heat-conducting component is 0.5 mm. When the cold plate is installed on the object to be cooled, the compressed thickness of the heat-conducting component after being compressed is 0.25 mm.

9. The heat dissipating structure according to any one of claims 1 to 4, wherein, The thickness of the cold plate is 1.5 mm, the wall thickness of the cold plate is 0.5 mm, and the width of the cooling channel is 0.5 mm.

10. The heat dissipating structure according to any one of claims 1 to 4, wherein It also includes a water distributor, which has an inflow channel and an outflow channel inside, and the cooling channel is in fluid communication with the inflow channel and the outflow channel; The inflow channel of the water distributor is configured as a variable diameter pipe, and the cross-sectional area of ​​the inflow channel gradually decreases along the flow direction of the cooling medium to compensate for friction loss.

11. The heat dissipation structure according to claim 10, characterized in that, The inflow channel is provided with a throttling orifice at the branch inlet connected to the cold plate, and the orifice diameter gradually increases along the flow direction of the cooling medium.

Images