Cold plate type radiator and cooling system

Abstract

The utility model discloses a cold plate type radiator which comprises a first cover plate, a second cover plate and a cooling liquid conveying device, a groove is formed in the second cover plate, and the first cover plate and the second cover plate are connected to enable the groove to form a heat exchange cavity. The first cover plate is provided with a liquid inlet and a liquid outlet which are communicated with the heat exchange cavity, the cooling liquid conveying device is connected with the liquid inlet and used for conveying cooling liquid into the heat exchange cavity from the liquid inlet and enabling the cooling liquid to flow out from the liquid outlet, and the cold plate type radiator further comprises a porous metal piece. A plurality of heat exchange ribs located in the heat exchange cavity are arranged on the second cover plate at intervals, and the porous metal piece is filled in the interval, so that cooling liquid from the liquid inlet flows out from the liquid outlet through the porous metal piece. The utility model further discloses a cooling system.

Description

A cold plate type radiator and cooling system Technical Field

[0001] This utility model relates to the field of liquid cooling technology, specifically to a cold plate radiator and cooling system. Background Technology

[0002] Currently, the main liquid cooling technologies for servers are cold plate type and immersion type. However, the existing cold plate type heat sink is still not ideal for local heat dissipation of servers.

[0003] Therefore, developing a cold plate heat sink, optimizing the cooling channel structure, improving the heat exchange effect of the cold plate heat sink, thereby improving the local heat dissipation effect of the server, and providing a cooling system using the cold plate heat sink are urgent problems to be solved in this field. Summary of the Invention

[0004] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, this utility model provides a cold plate radiator and a cooling system.

[0005] To achieve the above objectives, as a first aspect of this application, this application discloses a cold plate radiator, which includes a first cover plate, a second cover plate, and a coolant transfer device. The second cover plate has a groove, and the first cover plate and the second cover plate are connected so that the groove forms a heat exchange cavity. The first cover plate has an inlet and an outlet communicating with the heat exchange cavity. The coolant transfer device is connected to the inlet and is used to send coolant from the inlet into the heat exchange cavity and out of the outlet. The cold plate radiator also includes a porous metal component. The second cover plate has a plurality of heat exchange ribs spaced apart in the heat exchange cavity, and the porous metal component fills the gaps so that coolant from the inlet flows out of the outlet through the porous metal component.

[0006] Furthermore, the multiple heat exchange fins are arranged in multiple rows and / or columns along the coolant transport direction.

[0007] Furthermore, the height of the heat exchange rib is consistent with the height of the heat exchange cavity.

[0008] Furthermore, the porous metal component includes foamed metal, which has flow holes and a porosity of not less than 70%.

[0009] Furthermore, the porous metal component includes multiple transverse filling blocks and multiple longitudinal filling blocks. The heat exchange rib has two opposing long side surfaces and two opposing short side surfaces. The long side of the heat exchange rib is aligned with the coolant transport direction. The multiple transverse filling blocks fill the gaps between the long side surfaces of adjacent heat exchange ribs, and the multiple longitudinal filling blocks fill the gaps between the short side surfaces of adjacent heat exchange ribs.

[0010] Furthermore, the groove of the second cover plate includes two first grooves and one second groove. The two first grooves are respectively disposed at both ends of the second groove along the coolant transport direction. The first grooves are connected to the second groove, and the two first grooves are respectively connected to the inlet or the outlet.

[0011] Along the coolant transport direction, the opening area of ​​the first groove near the inlet or outlet is smaller than the opening area away from the inlet or outlet, and the opening area of ​​the second groove is the same along the coolant transport direction.

[0012] The heat exchange chamber includes two flow guiding chambers and one cooling chamber. The first groove corresponds to the flow guiding chamber, and the cooling chamber corresponds to the second groove.

[0013] Furthermore, the second cover plate is provided with multiple guide ribs located in the guide cavity.

[0014] The multiple flow guide ribs are arranged at circumferential intervals around the liquid inlet or the liquid outlet, with the liquid inlet or the liquid outlet as the base point, to form multiple flow guide channels along different radial directions of the liquid inlet or the liquid outlet.

[0015] The spacing between adjacent guide ribs near the inlet or outlet is smaller than the spacing between adjacent guide ribs away from the inlet or outlet.

[0016] Furthermore, the coolant transmission device includes a power transmission body and a coolant outlet pipe. The power transmission body has a first inlet and a first outlet at its two ends, respectively. The coolant outlet pipe is connected to the power transmission body through the first outlet. The power transmission body is used to make the coolant flowing in from the first inlet flow out from the first outlet.

[0017] As a second aspect of this application, a cooling system is disclosed, the cooling system comprising a liquid-cooled cabinet and a plurality of servers, the plurality of servers being housed in the liquid-cooled cabinet, the liquid-cooled cabinet being used to contain coolant so that the plurality of servers are immersed in coolant, characterized in that the cooling system further comprises a plurality of the aforementioned cold plate heat sinks, the outer side of the second cover plate of the cold plate heat sink being in close contact with the server, and a coolant transfer device being used to transfer the coolant in the liquid-cooled cabinet into the heat exchange chamber to cool the server.

[0018] Furthermore, the liquid-cooled cabinet is provided with an inlet pipe and an outlet pipe, the inlet of the cold plate radiator is located near the inlet pipe, and the outlet is located near the outlet pipe.

[0019] This technical solution provides a cold plate heat sink that, by setting multiple spaced heat exchange fins on the second cover plate and filling the spaces between adjacent heat exchange fins with porous metal parts, allows the coolant to flow fully through the complex micropore structure inside the porous metal parts when flowing through the heat exchange chamber. This significantly increases the heat exchange contact area and flow path length between the coolant and the cold plate, thereby improving the overall heat exchange efficiency. Simultaneously, the porous metal parts have good thermal conductivity and capillary action, effectively promoting rapid heat diffusion and uniform distribution, further enhancing heat dissipation capacity. Furthermore, this structural design is simple and compact, which is beneficial for improving the local heat dissipation effect of the server.

[0020] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Figure 1 is a perspective view of one embodiment of the cold plate heat sink provided in this application;

[0023] Figure 2 is a perspective view of one embodiment of the cold plate heat sink provided in this application;

[0024] Figure 3 is a perspective view of one embodiment of the cold plate heat sink provided in this application;

[0025] Figure 4 is a perspective view of one embodiment of the second cover plate provided in this application;

[0026] Figure 5 is a perspective view of one embodiment of the second cover plate provided in this application;

[0027] Figure 6 is a perspective view of one embodiment of the cooling system provided in this application.

[0028] Explanation of reference numerals in the attached figures

[0029] 1: Plate-type radiator; 2: First cover plate; 3: Second cover plate; 4: Coolant transfer device;

[0030] 5: Porous metal component; 2a: Liquid inlet; 2b: Liquid outlet; 30: Heat exchange chamber; 31: Flow guide rib; 32: Heat exchange rib; 40: First inlet; 41: Liquid outlet pipe; 50: Horizontal packing block; 51: Vertical packing block;

[0031] 301: First groove; 302: Second groove;

[0032] 10: Cooling system; 11: Liquid cooling cabinet; 12: Server; 10a: Liquid inlet pipe; 10b: Liquid outlet pipe. Detailed Implementation

[0033] The embodiments of this utility model 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 are intended to explain this utility model and should not be construed as limiting it.

[0034] The terms "an embodiment," "example," or "example" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this application. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0035] The inventors of this application have discovered that existing water-cooled plate technology only solves the local heat dissipation problem at the location of high-power chips. For other heat-generating components in the server, it is still necessary to combine it with air cooling in the data center to remove overall heat. At the same time, there is a risk of non-insulating coolant leakage. Due to the large internal space of the server, the flow rate of the coolant in existing immersion technology is often low when flowing through server components, which cannot meet the local heat dissipation requirements of high-performance, high-thermal-power design chips. That is, the heat dissipation power per unit volume needs to be improved. Current solutions include adding guide plates and bypass suppression near the chip to increase the local velocity and enhance heat transfer. However, this is a passive heat dissipation method, and the heat transfer enhancement effect is not obvious. It also has the disadvantages of complex modification and poor compatibility with server structure.

[0036] To achieve the above objectives, as a first aspect of this application, a cold plate radiator 1 is disclosed. As shown in FIG1, the cold plate radiator 1 includes a first cover plate 2, a second cover plate 3, and a coolant transfer device 4. The second cover plate 3 has a groove, and the first cover plate 2 and the second cover plate 3 are connected so that the groove forms a heat exchange cavity 30. The first cover plate 2 has an inlet 2a and an outlet 2b communicating with the heat exchange cavity 30. The coolant transfer device 4 is connected to the inlet 2a and is used to send coolant from the inlet 2a into the heat exchange cavity 30 and out of the outlet 2b. The cold plate radiator 1 also includes a porous metal part 5. The second cover plate 3 is provided with a plurality of heat exchange ribs 32 located in the heat exchange cavity 30 at intervals. The porous metal part 5 fills the intervals so that the coolant from the inlet 2a flows out of the outlet 2b through the porous metal part 5.

[0037] This technical solution provides a cold plate heat sink 1, in which a first cover plate 2 and a second cover plate 3 are bonded together to form a sealed heat exchange cavity 30. Multiple spaced heat exchange ribs 32 are arranged on the second cover plate 3, and porous metal parts 5 are filled between adjacent heat exchange ribs 32. This allows the coolant to flow fully through the complex micropore structure inside the porous metal parts 5 when flowing through the heat exchange cavity 30, thereby significantly increasing the heat exchange contact area and flow path length between the coolant and the cold plate, and improving the overall heat exchange efficiency. Simultaneously, the porous metal parts 5 have good thermal conductivity and capillary action, which can effectively promote the rapid diffusion and uniform distribution of heat, further enhancing heat dissipation capacity. Furthermore, this structural design is simple and compact, which is beneficial for improving the local heat dissipation effect of the server 12.

[0038] This application does not impose any special restrictions on the material of the second cover plate 3. Preferably, the bottom outer surface of the second cover plate 3 is in contact with the chip surface of the server 12 using an interface thermally conductive material to form a thermally conductive and heat-exchange interface, such as copper.

[0039] This application does not impose any special limitation on the arrangement of the heat exchange ribs 32, as long as there is a gap between them. The gap setting of the heat exchange ribs 32 can increase the turbulence effect and form more fluid channels. As an optional implementation, multiple heat exchange ribs 32 are arranged in multiple rows and / or multiple columns along the coolant transport direction, as shown in Figures 1, 3, 4 and 5. The uniform gap can make the coolant flow more evenly distributed, thereby making the heat exchange effect more uniform and consistent in various regions of the second substrate.

[0040] The heat exchange rib 32 of this application can be of any shape, for example, it can be a columnar heat exchange rib 32 or a plate-shaped heat exchange rib 32.

[0041] This application does not impose any special limitation on the height of the heat exchange ribs 32. As an optional implementation, the height of the heat exchange ribs 32 is the same as the height of the heat exchange chamber 30. In this way, the coolant can only pass through the channel formed between adjacent heat exchange ribs 32, and cannot pass through the gap channel between the first cover plate 2 and the heat exchange ribs 32. This can control the flow rate of the coolant and further increase the flow resistance between the coolant and the heat exchange ribs 32, increase turbulence, and enhance the heat exchange effect.

[0042] This application does not specifically limit the porous metal component 5. Preferably, the porous metal component 5 includes foamed metal, preferably foamed copper. The foamed metal has flow holes and a porosity of not less than 70%. Due to the high thermal conductivity of foamed copper and the strong fluid mixing ability between the microporous skeletons, it can effectively disrupt the heat transfer boundary layer and increase the turbulence of the liquid, thereby enhancing heat transfer. Based on the design of heat transfer and pressure drop, open-cell foamed copper material with a porosity of not less than 70% is selected as the material for the foamed copper block. By designing foamed copper with different porosities, the contradictory relationship between heat transfer efficiency and pressure loss can be adjusted, that is, meeting the heat transfer requirements while further reducing pressure loss. Through verification, compared with the traditional rectangular flow channel heat sink, the overall heat transfer performance is significantly improved.

[0043] This application does not impose any special limitations on how the porous metal component 5 is filled. As an optional embodiment, the porous metal component 5 includes multiple transverse filling blocks 50 and multiple longitudinal filling blocks 51. The heat exchange ribs 32 have two opposing long side surfaces and two opposing short side surfaces. The long side of the heat exchange ribs 32 is aligned with the coolant transport direction. The multiple transverse filling blocks 50 fill the gaps between the long side surfaces of adjacent heat exchange ribs 32, and the multiple longitudinal filling blocks 51 fill the gaps between the short side surfaces of adjacent heat exchange ribs 32. This allows the coolant to flow into the porous structure of the porous metal component 5 between the gaps between each heat exchange rib 32, defining the flow path of the coolant and increasing the heat exchange between the coolant and the porous metal component 5.

[0044] This application does not specifically limit the structure of how the groove forms the heat exchange cavity 30. In some embodiments, as shown in Figures 1, 3 to 5, the groove of the second cover plate 3 includes two first grooves 301 and one second groove 302. The two first grooves 301 are respectively disposed at both ends of the second groove 302 along the coolant transmission direction. The first grooves 301 and the second groove 302 are connected. The two first grooves 301 are respectively connected to the inlet 2a or the outlet 2b. Along the coolant transmission direction, the opening area of ​​the first groove 301 near the inlet 2a or the outlet 2b is smaller than the opening area away from the inlet 2a or the outlet 2b. This allows the coolant flow rate that has just entered or is about to flow out of the heat exchange cavity 30 to be evenly dispersed by the gradually expanding or shrinking opening area, avoiding uneven temperature caused by excessive flow rate in the middle and insufficient flow rate at the edges. Along the coolant transport direction, the opening area of ​​the second groove 302 is consistent. The heat exchange chamber 30 includes two guide chambers and one cooling chamber. The first groove 301 corresponds to the guide chamber, and the cooling chamber corresponds to the second groove 302. The coolant enters the guide chamber, is uniformly guided, and then flows into the cooling chamber.

[0045] The second cover plate 3 is provided with multiple flow guide ribs 31 located in the flow guide cavity. The multiple flow guide ribs 31 are arranged circumferentially around the liquid inlet 2a or the liquid outlet 2b as the base point to form multiple flow guide channels along different radial directions of the liquid inlet 2a or the liquid outlet 2b. The interval between adjacent flow guide ribs 31 near the liquid inlet 2a or the liquid outlet 2b is smaller than the interval between adjacent flow guide ribs 31 far away from the liquid inlet 2a or the liquid outlet 2b.

[0046] After the coolant enters the heat exchange chamber 30 through the inlet 2a, the flow direction of the coolant from the first cover plate 2 to the second cover plate 3 is adjusted to a uniform distribution along the surface of the second cover plate 3 due to the diversion effect of the guide ribs 31, thus ensuring uniform flow distribution. Subsequently, it comes into contact with the heat exchange ribs 32 arranged in a forked pattern and the foam copper blocks filled between the ribs.

[0047] In some embodiments, the coolant transmission device 4 includes a power transmission body and a coolant outlet pipe 41. The power transmission body has a first inlet 40 and a first outlet at its two ends, respectively. The coolant outlet pipe 41 is connected to the power transmission body through the first outlet. The power transmission body is used to make the coolant flowing in from the first inlet 40 flow out from the first outlet.

[0048] As a second aspect of this application, a cooling system 10 is disclosed, as shown in FIG6. The cooling system 10 includes a liquid-cooled cabinet 11 and a plurality of servers 12. The plurality of servers 12 are housed in the liquid-cooled cabinet 11, which is used to contain coolant so that the plurality of servers 12 are immersed in the coolant. The cooling system 10 is characterized in that it further includes a plurality of the aforementioned cold plate heat sinks 1. The outer side of the second cover plate 3 of the cold plate heat sink 1 is attached to the server 12. The coolant transfer device 4 is used to transfer the coolant in the liquid-cooled cabinet 11 into the heat exchange chamber 30 to cool the server 12.

[0049] In some embodiments, the outer side of the second cover plate 3 of the cold plate heat sink 1 is attached to the server 12. The first inlet 40 of the coolant transfer device 4 is immersed in the liquid cooling cabinet 11. Coolant is drawn into the liquid transfer device from the liquid cooling cabinet 11 and then transported to the inlet 2a of the cold plate heat sink 1. After flowing through the heat exchange chamber 30, the high-temperature coolant is cooled by heat exchange for the chips of the server 12 and then flows out from the outlet 2b into the liquid cooling cabinet 11. Finally, the high-temperature coolant is carried away by the coolant flow in the liquid cooling cabinet 11. The type of coolant can be insulating liquids such as fluorinated liquid, synthetic oil, and silicone oil.

[0050] In some embodiments, as a preferred option, the liquid-cooled cabinet 11 is provided with an inlet pipe 10a and an outlet pipe 10b, as shown in FIG6. The inlet 2a of the plate radiator 1 is located near the inlet pipe 10a, and the outlet 2b is located near the outlet pipe 10b. The first inlet 40 of the coolant transfer device 4 is arranged upstream of the overall coolant in the liquid-cooled cabinet 11 to draw in low-temperature cold fluid. The outlet 2b of the plate radiator is arranged downstream of the overall coolant flow in the liquid-cooled cabinet 11, away from the location of high-heat-generating elements.

[0051] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A cold plate radiator, the cold plate radiator (1) comprising a first cover plate (2), a second cover plate (3), and a coolant transfer device (4), wherein the second cover plate has a groove, the first cover plate and the second cover plate are connected such that the groove forms a heat exchange cavity (30), the first cover plate (2) has an inlet (2a) and an outlet (2b) communicating with the heat exchange cavity (30), and the coolant transfer device (4) is connected to the inlet (2a) for conveying coolant from the inlet (2a) into the heat exchange cavity (30) and out from the outlet (2b), characterized in that, The cold plate radiator (1) also includes a porous metal part (5). The second cover plate (3) is provided with a plurality of heat exchange ribs (32) located in the heat exchange chamber (30) at intervals. The porous metal part (5) fills the intervals so that the coolant from the inlet (2a) flows out from the outlet (2b) through the porous metal part (5).

2. The cold plate heat sink according to claim 1, characterized in that, The heat exchange ribs (32) are arranged in multiple rows and / or columns along the coolant transport direction.

3. The cold plate heat sink according to claim 2, characterized in that, The height of the heat exchange rib (32) is the same as the height of the heat exchange cavity (30).

4. The cold plate heat sink according to claim 1, characterized in that, The porous metal part (5) includes foamed metal, which has flow holes and a porosity of not less than 70%.

5. The cold plate heat sink according to claim 4, characterized in that, The porous metal part (5) includes a plurality of transverse filler blocks (50) and a plurality of longitudinal filler blocks (51). The heat exchange rib (32) has two opposite long side surfaces and two opposite short side surfaces. The long side of the heat exchange rib (32) is aligned with the coolant transmission direction. The plurality of transverse filler blocks (50) fill the gaps between the long side surfaces of adjacent heat exchange ribs (32), and the plurality of longitudinal filler blocks (51) fill the gaps between the short side surfaces of adjacent heat exchange ribs (32).

6. The cold plate heat sink according to claim 1, characterized in that, The groove of the second cover plate (3) includes two first grooves and one second groove. The two first grooves are respectively disposed at both ends of the second groove along the coolant transmission direction. The first grooves are connected to the second groove. The two first grooves are respectively connected to the inlet (2a) or the outlet (2b). Along the coolant transmission direction, the opening area of ​​the first groove near the inlet (2a) or the outlet (2b) is smaller than the opening area away from the inlet (2a) or the outlet (2b). Along the coolant transmission direction, the opening areas of the second groove are consistent. The heat exchange chamber (30) includes two guide chambers and one cooling chamber. The first groove corresponds to the guide chamber, and the cooling chamber corresponds to the second groove.

7. The cold plate heat sink according to claim 6, characterized in that, The second cover plate (3) is provided with a plurality of flow guide ribs (31) located in the flow guide cavity. The plurality of flow guide ribs (31) are arranged circumferentially around the liquid inlet (2a) or the liquid outlet (2b) as the base point to form a plurality of flow guide channels along different radial directions of the liquid inlet (2a) or the liquid outlet (2b). The interval between adjacent flow guide ribs (31) near the liquid inlet (2a) or the liquid outlet (2b) is smaller than the interval between adjacent flow guide ribs (31) far away from the liquid inlet (2a) or the liquid outlet (2b).

8. The cold plate heat sink according to any one of claims 1 to 7, characterized in that, The coolant transmission device (4) includes a power transmission body and a liquid outlet pipe (41). The power transmission body has a first inlet (40) and a first outlet at both ends. The liquid outlet pipe (41) is connected to the power transmission body through the first outlet. The power transmission body is used to make the coolant flowing in from the first inlet flow out from the first outlet.

9. A cooling system comprising a liquid-cooled cabinet and a plurality of servers, the plurality of servers being housed within the liquid-cooled cabinet, the liquid-cooled cabinet being configured to contain coolant such that the plurality of servers are immersed in the coolant, characterized in that, The cooling system further includes a plurality of cold plate heat sinks as described in any one of claims 1 to 8, wherein the outer side of the second cover plate of the cold plate heat sink is in contact with the server, and the coolant transfer device is used to transfer the coolant in the liquid-cooled cabinet into the heat exchange chamber to cool the server.

10. The cooling system according to claim 9, characterized in that, The liquid-cooled cabinet is provided with a liquid inlet pipe and a liquid outlet pipe. The liquid inlet of the cold plate radiator is located near the liquid inlet pipe, and the liquid outlet is located near the liquid outlet pipe.

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