Liquid cooling heat dissipation device of multi-hard-disk system

Abstract

The invention provides a liquid cooling heat dissipation device for a multi-hard-disk system, and the device comprises a case which is internally provided with a plurality of hard disk installation positions; the at least one cold plate is fixed in the case, and a cooling liquid flow channel is arranged in the cold plate; the branch liquid cooling plate assembly comprises an inlet branch liquid cooling plate and an outlet branch liquid cooling plate which are respectively communicated with two ends of the flow channel of the cold plate and are used for guiding cooling liquid to flow into and out of the cold plate; and a plurality of hard disk cartridges, each of the hard disk cartridges is detachably installed in the case, and each of the hard disk cartridges contains at least one hard disk. The heat dissipation problem of the high-density hard disk system is effectively solved, compared with a traditional air cooling scheme, the high-heat load can be better dealt with, and it is ensured that the hard disk can still keep good performance and stability under the high-load working condition.

Description

Technical Field

[0001] The present disclosure relates to the technical field of hard disk heat dissipation, and in particular to a liquid cooling device for a multi-hard disk system. Background Art

[0002] With the rapid development of information technology, the demand for data storage has exploded. Multi-hard disk systems, such as high-density mechanical hard disk (HDD) storage and servers, have been widely used in data centers, enterprise-level storage and other fields due to their large capacity and high reliability. However, these systems face increasingly severe heat dissipation challenges during operation.

[0003] Traditional air-cooling solutions mainly rely on fans to force air flow to remove the heat generated by the hard disk. However, with the advancement of hard disk technology, the capacity of HDDs continues to increase, and the width from the head to the target data track becomes smaller, which significantly increases the sensitivity of the hard disk to external acoustic and vibration sources. The increase in system component density further compresses the distance between the fan and the HDD, resulting in an increase in the impact of fan vibration and noise on the performance of mechanical hard disks. In order to cope with higher heat loads, the fan speed has to be further increased, which not only increases energy consumption, but may also cause more serious vibration and noise problems, adversely affecting hard disk performance.

[0004] Therefore, traditional air-cooling solutions have many deficiencies when dealing with the heat dissipation needs of multi-hard disk systems, and it is difficult to meet the performance requirements of higher-capacity mechanical hard disks in the future. Summary of the invention

[0005] The purpose of the present disclosure is to provide a liquid cooling device for a multi-hard disk system, aiming to solve the heat dissipation problem in the multi-hard disk system.

[0006] The present invention provides a liquid cooling device for a multi-hard disk system, comprising: a chassis, wherein a plurality of hard disk mounting positions are provided inside; at least one cold plate, fixed inside the chassis, wherein a cooling liquid flow channel is provided inside the cold plate; a liquid separation cold plate assembly, comprising an inlet liquid separation cold plate and an outlet liquid separation cold plate, which are respectively connected to two ends of the flow channel of the cold plate and are used to guide the cooling liquid to flow into and out of the cold plate; and a plurality of hard disk boxes, wherein each of the hard disk boxes is detachably installed in the chassis, and each of the hard disk boxes accommodates at least one hard disk.

[0007] In an embodiment of the first aspect, the path of the coolant flow channel is a parallel flow channel or an S-shaped flow channel, and the inlet liquid separation cold plate and the outlet liquid separation cold plate are both arranged perpendicular to the extension direction of the cold plate.

[0008] In an embodiment of the first aspect, a plurality of partition plates arranged in parallel are provided inside the cold plate; wherein, when the path of the coolant flow channel is the parallel flow channel, a plurality of openings extending in the same direction are provided on each partition plate; when the path of the coolant flow channel is the S-shaped flow channel, one opening is provided on each partition plate, and the openings on each partition plate are arranged in a staggered manner with respect to the openings of adjacent partition plates.

[0009] In an embodiment of the first aspect, a plurality of cold plates are provided inside the chassis, and the cold plates are arranged in a horizontal or vertical direction, dividing the chassis into a plurality of independent heat dissipation areas, and the size of each heat dissipation area is adapted to the installation method of the hard disk box; the hard disk box is installed in one of the following ways: plugging and unplugging back and forth along the horizontal direction of the cold plate; plugging and unplugging up and down along the vertical direction of the cold plate.

[0010] In an embodiment of the first aspect, the hard disk box is adapted to multiple specifications of hard disks, including 3.5-inch HDD, 2.5-inch HDD, 2.5-inch SSD, E1 and E3 specification hard disks, and compatibility heat dissipation is achieved by adjusting the spacing of the cold plates and the size of the hard disk box.

[0011] In an embodiment of the first aspect, it further includes: a first thermal interface, disposed between the hard disk and the inner surface of the hard disk box; a second thermal interface, disposed between the outer surface of the hard disk box and the cold plate; wherein, the hard disk box transfers the heat of the hard disk to the cold plate in sequence through the first thermal interface and the second thermal interface, and the heat is exported by the liquid-cooled cold plate assembly through the coolant circulation device.

[0012] In an embodiment of the first aspect, the first thermal interface and / or the second thermal interface includes one or a combination of the following materials: silicone grease, graphene sheet, phase change material, and metal shrapnel; wherein, the metal shrapnel is elastically contacted with the hard disk box or the cold plate to compensate for assembly tolerances.

[0013] In an embodiment of the first aspect, the coolant circulation device includes a temperature sensor and a flow regulating valve. The temperature sensor is disposed at the outlet liquid-cooled cold plate of the cold plate for real-time monitoring of the coolant temperature; the flow regulating valve dynamically adjusts the coolant flow rate according to the temperature feedback to achieve the matching of the heat dissipation power and the hard disk heat load.

[0014] In an embodiment of the first aspect, the hard disk box is provided with an independent power interface, and the power interface is connected to the redundant power bus inside the chassis and supports hot plugging and unplugging operations; an electrical isolation module is provided inside the chassis for cutting off the local circuit when the hard disk box is plugged and unplugged to maintain the power supply continuity of other hard disk boxes.

[0015] In an embodiment of the first aspect, the hard disk enclosure has a fully enclosed structure that covers the upper surface, lower surface, and side walls of the hard disk, and the outer surface of the hard disk enclosure conducts heat to the cold plate through surface contact or line contact.

[0016] As described above, the liquid cooling and heat dissipation device for a multi-hard disk system provided by the present disclosure has at least the following technical effects:

[0017] (1) The hard disk liquid cooling device of the present invention effectively solves the heat dissipation problem of high-density hard disk systems. Compared with traditional air cooling solutions, it can better handle high heat loads and ensure that the hard disk can still maintain good performance and stability under high-load working conditions.

[0018] (2) The liquid cooling device replaces the fan in traditional air cooling, thereby reducing the vibration and noise generated by the fan operation, reducing the negative impact of these factors on the performance of mechanical hard disks, and improving the accuracy and reliability of data reading and writing.

[0019] (3) The present invention provides an effective heat dissipation solution for current and future higher-capacity mechanical hard disks, meets the needs of data centers and enterprise-level storage for large-capacity storage devices, and promotes the development of hard disk technology.

[0020] (4) The hard disk is installed and removed from the front end, without the need to remove the entire device from the cabinet, greatly simplifying the maintenance process, reducing the complexity and workload of maintenance, and improving the maintenance efficiency.

[0021] (5) During the maintenance process, the entire device does not need to be powered off and can operate continuously, ensuring the high availability of the system and the continuity of the business, and reducing the downtime caused by maintenance.

[0022] (6) The design of using a hard disk enclosure to fully enclose the hard disk avoids surface wear of the hard disk during maintenance plugging and unplugging, extends the service life of the hard disk, and reduces the maintenance cost of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It shows a schematic structural diagram of the liquid cooling and heat dissipation device for a multi-hard disk system according to an embodiment of the present application.

[0024] Figure 2 It shows a schematic structural diagram of the liquid cooling and heat dissipation device for a multi-hard disk system according to another embodiment of the present application.

[0025] Figure 3 It shows a schematic structural diagram of the parallel flow channel according to an embodiment of the present application.

[0026] Figure 4 It shows a schematic structural diagram of the S-shaped flow channel according to an embodiment of the present application.

[0027] Figure 5 Schematic diagram of a hard disk enclosure structure for accommodating multiple hard disks according to an embodiment of the present application.

[0028] Figure 6 Schematic diagram of a hard disk enclosure structure for accommodating a single hard disk according to an embodiment of the present application.

[0029] Figure 7 Front view of the hard disk enclosure according to an embodiment of the present application.

[0030] Figure 8 Front view of an example of the liquid cooling heat dissipation device of the present application.

[0031] Figure 9 Schematic diagram of the first heat conduction interface between the hard disk enclosure and the hard disk according to an embodiment of the present application.

[0032] Figure 10 Schematic diagram of the second heat conduction interface between the hard disk cold plates according to an embodiment of the present application.

[0033] Element marking description

[0034] Chassis 11 Cold plate 12 Liquid-separating cold plate assembly 13 Inlet liquid-separating plate 131 Outlet liquid-separating plate 132 Hard disk box 14 Hard disk 15 Partition board 16 First thermal interface 17 Second thermal interface 18 Detailed implementation manners

[0035] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0036] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0037] As a core component of data centers and enterprise-level storage systems, the capacity of hard disk drives (HDDs) has been continuously increasing to meet the growing data storage needs. However, the increase in HDD capacity has led to higher requirements for the positioning accuracy of the magnetic heads. Even the slightest vibration can cause the magnetic heads to deviate from the tracks, affecting the data read / write speed and accuracy. The increase in the density of system components has restricted the air flow between the fans and the hard disks, reducing the heat dissipation efficiency. At the same time, the vibrations and noises generated by the fan operation are more likely to be transmitted to the hard disks, interfering with their normal operation. The increase in the fan speed not only consumes more electrical energy but also may generate greater vibrations and noises due to high-speed rotation, further deteriorating the working environment of the hard disks.

[0038] To address the above problems, the present invention proposes a liquid cooling heat dissipation device for a multi-hard disk system. The technical solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings in the embodiments of the present application.

[0039] As Figure 1 、 Figure 2 shown, a liquid cooling heat dissipation device for a multi-hard disk system of the present application is presented, which includes: a chassis 11, at least one cold plate 12, a liquid distribution cold plate assembly 13, and a plurality of hard disk enclosures 14.

[0040] The chassis 11 is internally provided with a plurality of hard disk mounting positions.

[0041] Specifically, the size and shape of the chassis 11 are designed according to specific application requirements to accommodate different numbers and sizes of the hard disk enclosures 14. The chassis 11 generally adopts a standard 19-inch rack-mounted design, facilitating installation and deployment in data centers or server rooms. The chassis 11 is made of high-strength metal materials, such as cold-rolled steel plates or aluminum alloys, to ensure its structural strength and durability. The surface of the chassis 11 is treated by powder coating or anodizing, having good corrosion resistance and appearance quality. The chassis 11 is internally provided with dedicated heat dissipation channels and ventilation holes to ensure the flow of the coolant in the cold plate 12 and the dissipation of heat. The heat dissipation design of the chassis 11 takes into account air flow and heat distribution to optimize the heat dissipation effect.

[0042] The cold plate 12 is fixed inside the chassis 11, and a coolant flow channel is provided inside the cold plate 12.

[0043] Specifically, the cold plate 12 is made of a material with good thermal conductivity, such as copper or aluminum, to ensure efficient heat conduction. The surface of the cold plate 12 is specially treated, such as anodizing or coating treatment, to improve its corrosion resistance and thermal conductivity. The cold plate 12 is fixed inside the chassis 11 through bolts, buckles or other fixing devices to ensure its stable position and prevent displacement due to vibration or other external forces.

[0044] The cold plate 12 is internally provided with coolant flow channels for guiding the coolant to flow within the cold plate 12 to carry away the heat generated by the hard disk 15. In some embodiments, the design of the coolant flow channels can be parallel flow channels or S-shaped flow channels, specifically depending on the heat dissipation requirements and system design. The parallel flow channels are composed of multiple parallel straight flow channels, and the coolant flows uniformly within the cold plate 12 along the flow channels. The S-shaped flow channels are composed of multiple continuous S-shaped curved flow channels, increasing the flow path length of the coolant and improving the heat exchange efficiency.

[0045] In some embodiments, a plurality of partition plates 16 are arranged in parallel inside the cold plate 12; wherein, when the path of the coolant flow channel is the parallel flow channel, a plurality of openings extending in the same direction are provided on each partition plate 16; when the path of the coolant flow channel is the S-shaped flow channel, one opening is provided on each partition plate 16, and the openings on each partition plate 16 are arranged in a staggered manner relative to the openings of the adjacent partition plates 16.

[0046] Specifically, the partition plates 16 inside the cold plate 12 are arranged in parallel, and a certain distance is maintained between each partition plate 16 to form the coolant flow channels. This layout ensures that the flow path of the coolant within the cold plate 12 is uniform and controllable.

[0047] As Figure 3 shown, when the path of the coolant flow channel is the parallel flow channel, a plurality of openings extending in the same direction are provided on each partition plate 16. These openings form parallel coolant flow channels between the adjacent partition plates 16, ensuring that the coolant flows along a parallel path within the cold plate 12. The design of the parallel flow channels enables the coolant to flow uniformly through each area of the cold plate 12, improving the heat dissipation efficiency.

[0048] As Figure 4 shown, when the path of the coolant flow channel is the S-shaped flow channel, one opening is provided on each partition plate 16, and the openings on each partition plate 16 are arranged in a staggered manner relative to the openings of the adjacent partition plates 16. This staggered arrangement enables the coolant to form an S-shaped flow path within the cold plate 12, increasing the flow path length of the coolant. The design of the S-shaped flow channels improves the heat exchange efficiency, ensuring that each area of the cold plate 12 can dissipate heat effectively.

[0049] Furthermore, in order to enhance the heat exchange efficiency of the coolant, a flow disturbance structure is also provided on the partition plate 16, and the flow disturbance structure is a raised fin or a sunken groove. Among them, the fin is usually a raised thin plate structure, which can be vertically or obliquely arranged on the inner wall of the partition plate 16. The groove is a sunken groove structure, which can be arranged along the flow channel direction or perpendicular to the flow channel direction.

[0050] The turbulator structures can be arranged on the partition plate 16 uniformly or non-uniformly. Uniformly arranged turbulator structures can ensure consistent heat exchange effect of the coolant throughout the flow channel, while non-uniformly arranged turbulator structures can be optimized according to the heat load distribution in the flow channel to improve the heat exchange efficiency in specific areas. The arrangement direction of the turbulator structures can be the same as or perpendicular to the flow direction of the coolant. Turbulator structures in the same direction as the flow direction can reduce the flow resistance of the coolant, while turbulator structures perpendicular to the flow direction can increase the contact area between the coolant and the inner wall of the flow channel, improving the heat exchange efficiency.

[0051] The liquid separation cold plate assembly 13 includes an inlet liquid separation plate 131 and an outlet liquid separation plate 132, which are respectively communicated with two ends of the flow channel of the cold plate 12 and are used to guide the coolant to flow into and out of the cold plate.

[0052] Specifically, the inlet liquid separation plate 131 and the outlet liquid separation plate 131 are arranged perpendicular to the extension direction of the cold plate 12 to ensure that the coolant can be evenly distributed to each flow channel and evenly converge when flowing out. The coolant enters from the inlet liquid separation plate 131, flows through the cold plate 12 through the flow channel, and finally converges to the outlet liquid separation plate 132 and flows out, and heat is exported through the coolant circulation device.

[0053] A plurality of hard disk boxes 14, each of the hard disk boxes 14 is detachably installed in the chassis 11, and each of the hard disk boxes 14 houses at least one hard disk 15.

[0054] In some embodiments, the hard disk box 14 is of a fully enclosed structure, covering the upper surface, lower surface and side walls of the hard disk 15, and the outer surface of the hard disk box 14 conducts heat with the cold plate 12 in a surface contact or line contact manner.

[0055] Specifically, as Figures 5-7 shown, the hard disk box 14 adopts a fully enclosed structure, covering the upper surface, lower surface and side walls of the hard disk 15 to ensure comprehensive protection of the hard disk 15 during operation and maintenance. The design of the fully enclosed structure can effectively prevent the hard disk 15 from being physically damaged by the outside world during the plugging process, and at the same time reduce the influence of dust and foreign objects on the hard disk 15. The outer shell of the hard disk box 14 is made of a material with good heat conduction performance, such as aluminum alloy or magnesium alloy, to ensure efficient heat conduction.

[0056] Following Figure 5 , a schematic structural diagram of a multi-in-one hard disk box is shown, in which multiple hard disks are integrated in one of the hard disk boxes 14, which is suitable for high-density storage requirements. Following Figure 6 , a schematic structural diagram of a single hard disk box is shown, and each of the hard disk boxes 14 houses only one hard disk 15, which is convenient for flexible management and maintenance.

[0057] In some embodiments, a plurality of the cold plates 12 are provided in the chassis 11. The cold plates 12 are arranged in a horizontal or vertical direction, dividing the chassis 11 into a plurality of independent heat dissipation areas, and the size of each heat dissipation area is adapted to the installation method of the hard disk box 14; the hard disk box 14 is installed in one of the following ways: plugging and unplugging back and forth along the horizontal direction of the cold plate 12; plugging and unplugging up and down along the vertical direction of the cold plate 12.

[0058] Exemplarily, taking the chassis 11 with a width of 19 inches and a height of 4RU as an example, the installation of the cold plate 12 is as Figure 8 shown. From the front view, the cold plate 12 divides the system into 20 areas, and each area can accommodate a set of the hard disk boxes 14.

[0059] Exemplarily, following Figure 1 , it shows the installation method of plugging and unplugging the hard disk box back and forth along the horizontal direction; following Figure 2 , it shows the installation method of plugging and unplugging the hard disk box up and down along the vertical direction.

[0060] In this implementation, the cold plate layout in the chassis and the installation method of the hard disk box not only improve the heat dissipation efficiency, but also ensure the convenience of the installation and maintenance process of the hard disk box. The horizontal or vertical arrangement of the cold plates can be optimized according to specific application requirements, while the installation methods of plugging and unplugging back and forth or up and down provide more flexibility for maintenance personnel.

[0061] In some embodiments, the hard disk box 14 is provided with an independent power interface, and the power interface is connected to the redundant power bus in the chassis 11 and supports hot plugging and unplugging operations; an electrical isolation module is provided in the chassis 11 to cut off the local circuit when the hard disk box 14 is plugged and unplugged, maintaining the power supply continuity of other hard disk boxes 14.

[0062] Specifically, the hard disk box 14 is provided with an independent power interface, which is used to connect to the redundant power bus in the chassis 11 to ensure that the hard disk box 14 can be independently powered. The power interface is automatically connected and powered when the hard disk box 14 is inserted into the chassis 11, ensuring that the hard disk box 14 can start working immediately; when the hard disk box 14 is pulled out, the power interface is automatically powered off to ensure safe operation and prevent equipment damage or data loss caused by hot plugging.

[0063] The chassis 11 is provided with a redundant power bus, which is connected to the independent power interfaces of a plurality of the hard disk boxes 14 to ensure that each hard disk box 14 can obtain a stable power supply. The redundant power bus adopts a dual power module or a power system with a backup battery to ensure that when the main power module fails, the backup power module can immediately take over the power supply to ensure the continuous operation of the system.

[0064] In addition, an electrical isolation module is provided inside the chassis 11. This module is used to cut off the local circuit when the hard disk box 14 is plugged in or unplugged, ensuring that the plugging and unplugging operations of the hard disk box 14 do not affect the power supply of other hard disk boxes 14. The electrical isolation module uses an optocoupler, a relay or other isolation devices to achieve circuit isolation and switching, ensuring that when the hard disk box 14 is plugged in or unplugged, the local circuit can be quickly cut off while other circuits maintain normal power supply.

[0065] In this implementation manner, the independent power interface of the hard disk box, the redundant power bus and the electrical isolation module jointly ensure the safety of the hot plug operation of the hard disk box and the continuous operation of the system, improving the reliability and maintenance efficiency of the multi-hard disk system.

[0066] In some embodiments, the hard disk box 14 is adapted to multiple specifications of hard disks, including 3.5-inch HDD, 2.5-inch HDD, 2.5-inch SSD, E1 and E3 specification hard disks, and realizes compatible heat dissipation by adjusting the spacing of the cold plate 12 and the size of the hard disk box 14.

[0067] In some embodiments, it further includes: a first thermal interface 17 and a second thermal interface 18; wherein, as Figure 9 shown, the first thermal interface 17 is disposed between the hard disk 15 and the inner surface of the hard disk box 14. As Figure 10 shown, the second thermal interface 18 is disposed between the outer surface of the hard disk box 14 and the cold plate 12; the hard disk box 14 transfers the heat of the hard disk 15 to the cold plate 12 in sequence through the first thermal interface 17 and the second thermal interface 18, and the liquid-cooled plate assembly 13 exports it through the coolant circulation device.

[0068] Exemplarily, the first thermal interface 17 and / or the second thermal interface 18 includes one or a combination of the following materials: silicone grease, graphene sheets, phase change materials, and metal shrapnel; wherein, the metal shrapnel elastically contacts the hard disk box 14 or the cold plate 12 to compensate for the assembly tolerance.

[0069] Specifically, silicone grease has good thermal conductivity and filling properties, and can effectively fill the tiny gaps between the hard disk 15 and the inner surface of the hard disk box 14 to ensure efficient heat transfer. Graphene sheets have an extremely high thermal conductivity coefficient and can quickly transfer heat from the hard disk 15 to the hard disk box 14. Phase change materials undergo phase changes within a specific temperature range and can absorb and release a large amount of heat, thereby playing a role in regulating temperature. Metal shrapnel can compensate for the assembly tolerance between the hard disk box 14 and the cold plate 12 through elastic contact, ensuring close contact of the thermal interface and improving the thermal conductivity efficiency.

[0070] To achieve efficient heat dissipation control and system optimization, in some embodiments, the coolant circulation device includes a temperature sensor and a flow regulating valve. The temperature sensor is disposed at the outlet liquid distribution plate 132 of the cold plate 12 for real-time monitoring of the coolant temperature. The flow regulating valve dynamically adjusts the coolant flow rate according to the temperature feedback to achieve the matching of the heat dissipation power and the heat load of the hard disk 15.

[0071] Specifically, the temperature sensor typically uses a negative temperature coefficient (NTC) thermistor, whose resistance decreases as the temperature rises, capable of converting the temperature change into an electrical signal. In this way, the temperature sensor can accurately measure the coolant temperature and feed the data back to the control system.

[0072] The flow regulating valve can automatically adjust the coolant flow rate according to the real-time temperature data to achieve the precise matching of the heat dissipation power and the hard disk heat load.

[0073] Through the collaborative work of the temperature sensor and the flow regulating valve, the coolant circulation device can achieve efficient heat dissipation control. The temperature sensor monitors the temperature change of the coolant in real time and feeds the data back to the control system. The control system dynamically adjusts the opening degree of the flow regulating valve according to these data, thereby changing the coolant flow rate. This closed-loop control mechanism ensures that the heat dissipation system can be optimized according to the actual heat load of the hard disk, avoiding overcooling or overheating phenomena, and improving the overall efficiency of the system.

[0074] The above embodiments merely illustrate the principles and effects of the present application and are not intended to limit the present application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in the present application should still be covered by the claims of the present application.

[0075] The above embodiments merely illustrate the principles and effects of the present application and are not intended to limit the present application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in the present application should still be covered by the claims of the present application.

Claims

1. A liquid cooling device for a multi-hard disk system, characterized in that: include: The chassis has multiple hard disk installation positions inside; At least one cold plate, fixed inside the chassis, wherein a coolant flow channel is provided inside the cold plate; The liquid separation cold plate assembly comprises an inlet liquid separation cold plate and an outlet liquid separation cold plate, which are respectively connected to two ends of the flow channel of the cold plate and are used to guide the coolant to flow into and out of the cold plate; A plurality of hard disk boxes are provided, each of which is detachably mounted in the chassis, and each of which accommodates at least one hard disk.

2. The liquid cooling device for a multi-hard disk system according to claim 1, characterized in that: The paths of the coolant flow channels are parallel channels or S-shaped channels, and the inlet liquid-dividing cold plate and the outlet liquid-dividing cold plate are both arranged perpendicular to the extension direction of the cold plate.

3. The liquid cooling device for a multi-hard disk system according to claim 2, characterized in that: The cold plate is provided with a plurality of parallel partitions inside; wherein, When the path of the coolant flow channel is the parallel flow channel, each partition is provided with a plurality of openings extending in the same direction; When the path of the coolant flow channel is the S-shaped flow channel, each partition is provided with an opening, and the opening on each partition is staggered relative to the opening of the adjacent partition.

4. The liquid cooling device for a multi-hard disk system according to claim 1, characterized in that: The chassis is provided with a plurality of cold plates, which are arranged in a horizontal or vertical direction to divide the chassis into a plurality of independent heat dissipation areas, and the size of each heat dissipation area is adapted to the installation method of the hard disk box; the hard disk box is installed in one of the following ways: Inserting and removing the cold plate in a horizontal direction forward and backward; The cold plate is plugged in and out vertically.

5. The liquid cooling device for a multi-hard disk system according to claim 4, characterized in that: The hard disk box is adapted to hard disks of various specifications, including 3.5-inch HDD, 2.5-inch HDD, 2.5-inch SSD, E1 and E3 specification hard disks, and compatible heat dissipation is achieved by adjusting the spacing of the cold plates and the size of the hard disk box.

6. The liquid cooling device for a multi-hard disk system according to claim 1, characterized in that: Also includes: A first heat-conducting interface is provided between the hard disk and the inner surface of the hard disk box; A second heat-conducting interface is disposed between the outer surface of the hard disk enclosure and the cold plate; The hard disk box sequentially transfers the heat of the hard disk to the cold plate through the first heat-conducting interface and the second heat-conducting interface, and the heat is discharged by the liquid-separated cold plate assembly through the coolant circulation device.

7. The liquid cooling device for a multi-hard disk system according to claim 6, characterized in that: The first thermally conductive interface and / or the second thermally conductive interface comprises one or a combination of the following materials: Silicone grease, graphene sheet, phase change material and metal shrapnel; wherein the metal shrapnel is in elastic contact with the hard disk box or the cold plate to compensate for assembly tolerance.

8. The liquid cooling device according to claim 6, characterized in that: The coolant circulation device comprises a temperature sensor and a flow regulating valve, wherein the temperature sensor is arranged at the outlet of the cold plate and is used to monitor the coolant temperature in real time; The flow regulating valve dynamically adjusts the flow rate of the coolant according to temperature feedback to achieve matching of the heat dissipation power with the heat load of the hard disk.

9. The liquid cooling device for a multi-hard disk system according to claim 1, characterized in that: The hard disk box is provided with an independent power supply interface, which is connected to a redundant power supply bus in the chassis and supports hot-swap operation; An electrical isolation module is provided in the chassis to cut off a local circuit when the hard disk enclosure is plugged in or out, thereby maintaining the power supply continuity of other hard disk enclosures.

10. The liquid cooling device for a multi-hard disk system according to claim 1, characterized in that: The hard disk box is a fully wrapped structure, covering the upper surface, lower surface and side wall of the hard disk, and the outer surface of the hard disk box conducts heat with the cold plate through surface contact or line contact.

Images