Hybrid liquid cooling plate

Abstract

The utility model discloses a mixed type liquid cooling plate. The mixed type liquid cooling plate comprises a first substrate, a second substrate and an expansion part, the first substrate is provided with a plurality of first flow channels, the second substrate and the first substrate are in sealed connection to seal and cover the first flow channels, the first substrate or the second substrate is provided with a liquid inlet and a liquid outlet, and the adjacent first flow channels are communicated end to end through a connecting flow channel, so that cooling liquid sequentially flows into the first flow channels from the liquid inlet. The expansion part is arranged in the first flow channel close to the liquid outlet, and the expansion part is used for increasing the heat exchange speed of the mixed liquid cooling plate and the cooling liquid so as to reduce the temperature difference between the side, close to the liquid inlet, of the mixed liquid cooling plate and the side, close to the liquid outlet, of the mixed liquid cooling plate. According to the mixed liquid cooling plate, the heat dissipation efficiency can be improved, it can be ensured that heat dissipation of the liquid cooling plate is more uniform, and therefore it is ensured that temperature distribution on equipment is more balanced, the use performance of the equipment is ensured, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of radiator technology, and in particular to a hybrid liquid cooling plate. Background Technology

[0002] With the continuous improvement of electronic technology and power density, traditional air cooling methods can no longer meet the heat dissipation requirements of these devices. Liquid cooling plates are heat dissipation devices that use liquid as a heat conduction medium. Connected to the equipment, the liquid cooling plate can efficiently remove the heat generated by the equipment, maintaining it within the ideal operating temperature range and preventing overheating from affecting equipment performance and lifespan. Therefore, liquid cooling plates are widely used in high-power-density equipment requiring precise temperature control.

[0003] Liquid enters the flow channel of the liquid cooling plate through the inlet and flows out through the outlet. As the liquid flows through the channel, it exchanges heat with the liquid cooling plate to reduce the equipment's temperature. In existing technologies, the flow channels on the liquid cooling plate are formed using a simple stamping process, and all channels on the plate have the same structure. The liquid absorbs heat and its temperature rises during flow, with the temperature of the liquid closer to the outlet being higher. This results in uneven temperature distribution on the equipment, particularly near the outlet, affecting its performance and lifespan.

[0004] Therefore, existing liquid cooling plates need further improvement. Summary of the Invention

[0005] The purpose of this invention is to provide a hybrid liquid cooling plate that not only improves heat dissipation efficiency but also ensures more uniform heat dissipation, thereby ensuring a more balanced temperature distribution on the equipment, and thus ensuring the performance of the equipment and extending its service life.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A hybrid liquid cooling plate, comprising:

[0008] A first substrate, wherein a plurality of first flow channels are disposed on the first substrate;

[0009] The second substrate is sealed to the first substrate to cover the first flow channel. The first substrate or the second substrate is provided with an inlet for coolant to flow into the first flow channel and an outlet for coolant to flow out of the first channel. Adjacent first flow channels are connected end to end by connecting channels so that the coolant flows into multiple first flow channels sequentially from the inlet.

[0010] An extension section is provided in the first flow channel near the liquid outlet. The extension section is used to increase the rate of heat exchange between the hybrid liquid cooling plate and the coolant, so as to reduce the temperature difference between the side of the hybrid liquid cooling plate near the liquid inlet and the side of the hybrid liquid cooling plate near the liquid outlet.

[0011] Preferably, the width of the first flow channel near the liquid inlet is smaller than the width of the first flow channel near the liquid outlet.

[0012] Preferably, the extension portion is provided with a plurality of through holes for the coolant to flow through, thereby increasing the contact area between the extension portion and the coolant.

[0013] Preferably, the number of the extensions is one or more, and when the number of the extensions is multiple, the multiple extensions are distributed at intervals.

[0014] Preferably, the first flow channel is provided with a plurality of disturbance parts, which are distributed at intervals in the first flow channel.

[0015] Preferably, the plurality of said disturbance portions are spaced apart in the direction of coolant flow; and / or,

[0016] The plurality of disturbances are spaced apart in a direction perpendicular to the flow of the coolant.

[0017] Preferably, the first flow channel is formed by stamping, and the first flow channel protrudes in the direction away from the second substrate;

[0018] The inlet is connected to the first channel through an inlet flow channel, and the outlet is connected to the first channel through an outlet flow channel.

[0019] Preferably, the first substrate and the second substrate are connected by soldering; and / or,

[0020] The extension portion is connected to at least one of the first substrate and the second substrate by welding.

[0021] Preferably, the hybrid liquid cooling plate is provided with a plurality of mounting portions, which are used to install the hybrid liquid cooling plate onto the equipment.

[0022] Preferably, the side of the second substrate facing away from the first substrate is disposed in close contact with the device; or,

[0023] A thermally conductive material is disposed on the side of the second substrate facing away from the first substrate, and the thermally conductive material is disposed in close contact with the device.

[0024] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0025] This invention relates to a hybrid liquid-cooled plate. By incorporating an extension section within the first flow channel, the extension section increases the contact surface with the coolant, thereby increasing the rate of heat exchange between the liquid-cooled plate and the coolant. This improves the heat dissipation efficiency of the liquid-cooled plate, accelerating temperature reduction in the equipment and ensuring its performance and extending its lifespan. Furthermore, by placing the extension section within the first flow channel near the outlet, the temperature difference between the side of the hybrid liquid-cooled plate near the inlet and the side near the outlet is reduced. In other words, the temperature difference between the areas near the inlet and outlet is minimized, ensuring a more uniform temperature distribution within the equipment and further enhancing its performance and lifespan. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the hybrid liquid cooling plate according to an embodiment of the present invention.

[0027] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0028] Figure 3 This is an exploded view of the hybrid liquid cooling plate according to an embodiment of the present invention.

[0029] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle.

[0030] Figure 5 This is a schematic diagram of the structure of the first substrate and the extension portion in the embodiment of the utility model.

[0031] In the figure: 100, liquid cooling plate; 1, first substrate; 11, first flow channel; 111, disturbance part; 12, connecting flow channel; 13, liquid inlet flow channel; 14, liquid outlet flow channel; 15, groove; 2, second substrate; 21, liquid inlet; 22, liquid outlet; 23, mounting part; 3, expansion part; 31, through hole. Detailed Implementation

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0033] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0034] Reference Figures 1 to 5 This invention provides a hybrid liquid cooling plate 100, which is installed on a device to absorb heat generated by the device, thereby reducing the device's temperature. The liquid cooling plate 100 may include a first substrate 1, a second substrate 2, and an extension portion 3. The first substrate 1 and the second substrate 2 are disposed opposite each other and sealed together. The extension portion 3 is disposed and sealed between the first substrate 1 and the second substrate 2. In use, the second substrate 2 faces the device. Preferably, both the first substrate 1 and the second substrate 2 can be made of a material with good thermal conductivity to improve the heat dissipation performance of the liquid cooling plate 100.

[0035] The side of the second substrate 2 facing away from the first substrate 1 can be attached to the device, allowing heat from the device to be directly transferred to the liquid cooling plate 100. The side of the second substrate 2 facing away from the first substrate 1 can also be provided with a thermally conductive material (not shown). This material can be attached to the device and may be, for example, a thermally conductive pad or thermally conductive gel. The thermally conductive material not only has better thermal conductivity, allowing heat from the device to be quickly transferred to the liquid cooling plate 100, but it also allows for a tighter connection with the device and the liquid cooling plate 100, increasing the contact area between the thermally conductive material and the device and the liquid cooling plate 100, thereby improving the cooling effect. Simultaneously, the thermally conductive material also has a buffering effect, reducing or completely eliminating noise generated by vibration between the liquid cooling plate 100 and the device.

[0036] Specifically, the first substrate 1 can be quadrilateral in shape, or it can be other shapes, depending on actual needs. The first substrate 1 is provided with a plurality of first flow channels 11, which are located on the side of the first substrate 1 facing the second substrate 2, and are used for the passage of coolant.

[0037] Multiple first flow channels 11 can be arranged in a serpentine pattern, in parallel, or otherwise. In this embodiment, multiple first flow channels 11 are arranged in parallel. This allows for the provision of more first flow channels 11 while keeping the area of ​​the first substrate 1 constant. This extends the total length of the first flow channels 11 and increases their surface area, thereby extending the flow path of the coolant in the first flow channels 11 and increasing the contact area between the coolant and the first flow channels 11. Consequently, the cooling effect and efficiency of the coolant can be improved.

[0038] The first flow channel 11 can be formed by methods such as embedding, CNC machining, die casting, or stamping. In this embodiment, the first flow channel 11 can be formed by stamping, and the first flow channel 11 protrudes in the direction away from the second substrate 2. That is to say, the first flow channel 11 and the first substrate 1 are integrally formed, which facilitates the formation of the first substrate 1 and the first flow channel 11.

[0039] The first substrate 1 may also be provided with a plurality of grooves 15. The grooves 15 are preferably spaced around the perimeter of the first substrate 1. The grooves 15 can increase the structural strength of the first substrate 1 and prevent the first substrate 1 from deforming. The grooves 15 can be formed by stamping. The grooves 15 protrude in the direction away from the second substrate 2. The grooves 15 can be stamped together with the first flow channel 11.

[0040] The shape of the second substrate 2 can be the same as or similar to that of the first substrate 1, or it can be set to other shapes according to actual needs. In this embodiment, the shape of the second substrate 2 is the same as that of the first substrate 1, that is, the second substrate 2 is quadrilateral in shape. The second substrate 2 and the first substrate 1 are sealed together to cover the first flow channel 11, that is, the second substrate 2 and the side of the first substrate 1 where the first flow channel 11 is provided are sealed together. The first substrate 1 and the second substrate 2 can be connected by welding, or other methods can be used for connection. The first substrate 1 or the second substrate 2 is provided with an inlet 21 for coolant to flow into the first flow channel 11 and an outlet 22 for coolant to flow out of the first channel, that is, the first substrate 1 can be provided with an inlet 21 and an outlet 22, and the second substrate 2 can also be provided with an inlet 21 and an outlet 22. In this embodiment, the inlet 21 and the outlet 22 are provided on the second substrate 2. Adjacent first flow channels 11 can be connected end-to-end via connecting flow channels 12, allowing coolant to flow sequentially into multiple first flow channels 11 from the inlet 21 and finally flow out from the outlet 22. The inlet 21 can be connected to the first flow channel 11 via an inlet flow channel 13, and the outlet 22 can be connected to the first flow channel 11 via an outlet flow channel 14. Both the inlet flow channel 13 and the outlet flow channel 14 can be disposed on the first substrate 1. In this embodiment, the first flow channel 11, connecting flow channel 12, inlet flow channel 13, outlet flow channel 14, and groove 15 can all be formed by stamping, and preferably, the first flow channel 11, connecting flow channel 12, inlet flow channel 13, outlet flow channel 14, and groove 15 are stamped simultaneously.

[0041] The hybrid liquid cooling plate 100 may also be provided with a plurality of mounting portions 23, such as riveting posts, which are used to mount the hybrid liquid cooling plate 100 to the device. In this embodiment, the mounting portions 23 may be provided on the side of the second substrate 2 facing the device, and the mounting portions 23 may be provided around the perimeter of the second substrate 2.

[0042] The side of the second substrate 2 facing the first substrate 1 is preferably flat, which makes the connection between the second substrate 2 and the first substrate 1 tighter and provides a better sealing effect. In some embodiments, a second flow channel (not shown) may also be provided on the side of the second substrate 2 facing the first substrate 1. The second flow channel can be provided correspondingly to the first flow channel 11. The second flow channel and the first flow channel 11 together form a channel for the coolant to pass through. The second flow channel not only increases the size of the channel and the flow rate of the coolant, but also increases the contact area between the coolant and the second substrate 2, further improving the cooling effect.

[0043] The extension section 3 is preferably made of a material with good thermal conductivity. The extension section 3 can be disposed in the first flow channel 11 near the liquid outlet 22. The extension section 3 has a larger surface area, which is equivalent to increasing the contact area between the liquid cooling plate 100 and the coolant. The extension section 3 is used to increase the rate of heat exchange between the hybrid liquid cooling plate 100 and the coolant, so as to reduce the temperature difference between the side of the hybrid liquid cooling plate 100 near the liquid inlet 21 and the side of the hybrid liquid cooling plate 100 near the liquid outlet 22. As an example, six first flow channels 11 are provided on the first substrate 1, and the extension sections 3 are provided in two flow channels near the liquid outlet 22.

[0044] In other words, the coolant has a low temperature and good heat dissipation near the outlet 22. However, as the coolant absorbs heat, the temperature difference between the coolant and the liquid cooling plate 100 decreases, resulting in a poorer cooling effect. By providing the extension section 3, the contact area with the coolant can be increased, thereby compensating for the poorer cooling effect caused by the smaller temperature difference between the coolant and the liquid cooling plate 100. This reduces the temperature difference at different locations on the liquid cooling plate 100, ensuring a more balanced temperature distribution on the equipment, further ensuring the equipment's performance and extending its service life.

[0045] The extension portion 3 can be connected to at least one of the first substrate 1 and the second substrate 2 by welding. In this embodiment, both sides of the extension portion 3 can be connected to the first substrate 1 and the second substrate 2 by welding, respectively. In some embodiments, the extension portion 3 can also be connected only to the first substrate 1, for example by welding, gluing, or other methods, and the second substrate 2 can be spaced apart from or pressed against the extension portion 3.

[0046] As a preferred embodiment, the extension portion 3 may be provided with multiple through holes 31 for coolant to flow through. The sidewalls of the through holes 31 have surfaces that contact the coolant, thereby increasing the contact area between the extension portion 3 and the coolant, further improving the cooling effect of the extension portion 3, and thus improving the cooling effect of the liquid cooling plate 100. The shape of the through holes 31 may be circular, square, or other shapes, and the through holes 31 may extend along straight lines, curves, or other directions.

[0047] The number of expansion sections 3 can be one or more. Multiple expansion sections 3 result in a larger contact area with the coolant, leading to better cooling. When there are multiple expansion sections 3, they can be spaced apart. Multiple expansion sections 3 can be distributed in different first flow channels 11, or multiple expansion sections 3 can be arranged in the same first flow channel 11, depending on actual needs. When multiple expansion sections 3 are arranged in the same first flow channel 11, their spaced distribution agitates the coolant, changing the flow state from laminar to turbulent. The turbulent flow effectively breaks the temperature gradient, making the heat exchange between the coolant and the liquid cooling plate 100 more uniform. This allows heat to be transferred more effectively from the equipment to the coolant, improving heat dissipation efficiency.

[0048] In this application, by providing an extension section 3 in the first flow channel 11, the extension section 3 increases the contact surface with the coolant, thereby increasing the speed of heat exchange between the liquid cooling plate 100 and the coolant. This improves the heat dissipation efficiency of the liquid cooling plate 100, accelerating the temperature reduction of the equipment and ensuring its performance and extending its service life. Furthermore, by placing the extension section 3 in the first flow channel 11 near the outlet 22, the temperature difference between the side of the mixed-type liquid cooling plate 100 near the inlet 21 and the side near the outlet 22 can be reduced. In other words, the temperature difference between the parts of the equipment near the inlet 21 and the parts near the outlet 22 can be reduced, ensuring a more balanced temperature distribution on the equipment and further ensuring its performance and extending its service life.

[0049] In one specific embodiment, the width of the first flow channel 11 near the liquid inlet 21 is smaller than the width of the first flow channel 11 near the liquid outlet 22. This results in a lower flow velocity of the coolant in the first flow channel 11 near the liquid inlet 21 than in the first flow channel 11 near the liquid outlet 22. Consequently, the coolant spends more time flowing in the first flow channel 11 near the liquid outlet 22, allowing for a longer heat exchange between the coolant and the liquid cooling plate 100. This further compensates for the reduced cooling effect caused by the smaller temperature difference between the coolant and the liquid cooling plate 100, thereby reducing the temperature difference at different locations on the liquid cooling plate 100. This ensures a more balanced temperature distribution on the equipment, further enhancing the equipment's performance and extending its service life.

[0050] As a preferred embodiment, the first flow channel 11 may be provided with multiple disturbance parts 111. The disturbance parts 111 may protrude from the bottom of the first flow channel 11 toward the second substrate 2, and the multiple disturbance parts 111 may be distributed at intervals in the first flow channel 11. More preferably, each first flow channel 11 may be provided with multiple disturbance parts 111. The multiple disturbance parts 111 can not only increase the contact area with the coolant, thereby improving the cooling effect of the liquid cooling plate 100, but also have a stirring effect on the coolant, changing the flow state of the coolant from laminar to turbulent. The turbulent flow characteristics can effectively break the temperature gradient, making the heat exchange between the coolant and the liquid cooling plate 100 more uniform. In this way, heat can be transferred from the equipment to the coolant more effectively, improving the heat dissipation efficiency. The design of the disturbance parts 111 can also make the coolant more uniformly distributed in the first flow channel 11, avoiding insufficient cooling in some areas, thereby ensuring that the liquid cooling plate 100 can uniformly dissipate heat to the entire equipment. In addition, the disturbance part 111 can help the coolant remove deposits that may accumulate in the first flow channel 11 during the flow process by changing the flow state of the coolant, thereby reducing the deposition of solid particles on the surface of the liquid cooling plate 100, thus slowing down the aging of the equipment and improving the long-term stability and efficiency of the system.

[0051] Multiple disturbance parts 111 can be spaced apart in the direction of coolant flow, or spaced apart perpendicular to the direction of coolant flow. That is, multiple disturbance parts 111 can be arranged in multiple rows or columns in the first flow channel 11 to change the flow state of the coolant. The arrangement of the disturbance parts 111 can also be adjusted according to actual needs.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A hybrid liquid-cooled plate, characterized in that, include: A first substrate, wherein a plurality of first flow channels are disposed on the first substrate; The second substrate is sealed to the first substrate to cover the first flow channel. The first substrate or the second substrate is provided with an inlet for coolant to flow into the first flow channel and an outlet for coolant to flow out of the first channel. Adjacent first flow channels are connected end to end by connecting channels so that the coolant flows into multiple first flow channels sequentially from the inlet. An extension section is provided in the first flow channel near the liquid outlet. The extension section is used to increase the rate of heat exchange between the hybrid liquid cooling plate and the coolant, so as to reduce the temperature difference between the side of the hybrid liquid cooling plate near the liquid inlet and the side of the hybrid liquid cooling plate near the liquid outlet.

2. The hybrid liquid cooling plate according to claim 1, characterized in that, The width of the first flow channel near the liquid inlet is smaller than the width of the first flow channel near the liquid outlet.

3. The hybrid liquid cooling plate according to claim 1, characterized in that, The extension section is provided with multiple through holes for the coolant to flow through, thereby increasing the contact area between the extension section and the coolant.

4. The hybrid liquid cooling plate according to claim 1, characterized in that, The number of the extensions can be one or more, and when the number of the extensions is multiple, the multiple extensions are distributed at intervals.

5. The hybrid liquid cooling plate according to claim 1, characterized in that, The first flow channel is provided with a plurality of disturbance parts, which are distributed at intervals in the first flow channel.

6. The hybrid liquid-cooled plate according to claim 5, characterized in that, The plurality of said disturbance portions are spaced apart in the direction of coolant flow; and / or, The plurality of disturbances are spaced apart in a direction perpendicular to the flow of the coolant.

7. The hybrid liquid-cooled plate according to claim 1, characterized in that, The first flow channel is formed by stamping, and the first flow channel protrudes in the direction away from the second substrate; The inlet is connected to the first channel through an inlet flow channel, and the outlet is connected to the first channel through an outlet flow channel.

8. The hybrid liquid cooling plate according to claim 1, characterized in that, The first substrate and the second substrate are connected by soldering; and / or, The extension portion is connected to at least one of the first substrate and the second substrate by welding.

9. The hybrid liquid cooling plate according to claim 1, characterized in that, The hybrid liquid cooling plate is provided with several mounting parts, which are used to install the hybrid liquid cooling plate onto the equipment.

10. The hybrid liquid-cooled plate according to claim 9, characterized in that, The side of the second substrate facing away from the first substrate is disposed in close contact with the device; or, A thermally conductive material is disposed on the side of the second substrate facing away from the first substrate, and the thermally conductive material is disposed in close contact with the device.

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