Split type liquid cooling plate

Abstract

The application provides a split liquid cooling plate and relates to the technical field of liquid cooling heat dissipation.The application is characterized in that a flow guide tooth and a main heat dissipation tooth are arranged in a cold liquid flow passage between a liquid cooling plate and an upper cover plate, the cold liquid is forced to flow by the flow guide tooth, the cold liquid can flow into each main heat dissipation tooth uniformly, the flow of the cold liquid in each main heat dissipation tooth is adjusted, the cold liquid flows uniformly in each main heat dissipation tooth, and the heat dissipation efficiency of each main heat dissipation tooth is balanced.Therefore, the edge flow phenomenon in the split liquid cooling plate can be slowed down, the cold liquid flows uniformly in the split liquid cooling plate, and the heat dissipation efficiency of the split liquid cooling plate is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid cooling heat dissipation, and particularly relates to a split type liquid cooling plate. BACKGROUND

[0002] With the continuous increase of the power of electronic chips, the heat flux density of electronic chips is continuously increased, and the heat is concentrated on the surface of the CPU. The traditional air cooling cannot meet the heat dissipation demand of the CPU. The liquid cooling technology is widely applied due to the characteristics of fast heat dissipation speed, small noise, stable heat dissipation effect and the like. As a core component of the liquid cooling technology, the working principle of the liquid cooling plate is that the cooling liquid is introduced into the inside of the liquid cooling plate through the external cooling liquid pipe, and the cooling liquid carries away the heat concentrated on the surface of the CPU in the liquid cooling plate through the forced convection.

[0003] However, the liquid cooling plate still has the problem of low heat dissipation efficiency. For example, the cooling liquid flow speed of the heat dissipation fin between the liquid inlet and the liquid outlet of the liquid cooling plate is fast, and the cooling liquid flow speed of the heat dissipation fin far away from the liquid inlet and the liquid outlet is slow, and there is a large imbalance. In severe cases, the edge side far away from the liquid inlet and the liquid outlet has no flow phenomenon, which leads to low heat dissipation efficiency of the liquid cooling plate. SUMMARY

[0004] The present application provides a split type liquid cooling plate, which can slow down the no flow phenomenon in the split type liquid cooling plate, realize the uniform flow of the cooling liquid in the split type liquid cooling plate, and improve the heat dissipation efficiency of the split type liquid cooling plate.

[0005] In a first aspect, the present application provides a split type liquid cooling plate, comprising: a liquid cooling plate, and an upper cover plate welded with the liquid cooling plate; a cooling liquid flow passage is formed between the liquid cooling plate and the upper cover plate, and a main heat dissipation fin located between a liquid inlet and a liquid outlet of the cooling liquid flow passage, and a flow guide fin located between the liquid inlet and the main heat dissipation fin are arranged in the cooling liquid flow passage; the flow guide fin is arranged in a diverging manner from the water nozzle edge of the liquid inlet to each main heat dissipation fin, and forcibly divides the cooling liquid flowing from the liquid inlet; the cooling liquid flows from the liquid inlet, passes through the flow guide passage between each flow guide fin, and then flows into the main heat dissipation passage between each main heat dissipation fin, so as to realize the flow division of the cooling liquid between each main heat dissipation fin.

[0006] In a possible implementation manner, the liquid outlet of the liquid inlet extends into the cooling liquid flow passage and is staggered with the water nozzle end of the flow guide fin.

[0007] In a possible implementation manner, the liquid inlet and the liquid outlet are arranged on the upper cover plate; or the liquid inlet and the liquid outlet are arranged on the liquid cooling plate; or the liquid inlet is arranged on the upper cover plate, and the liquid outlet is arranged on the liquid cooling plate; or the liquid inlet is arranged on the liquid cooling plate, and the liquid outlet is arranged on the upper cover plate.

[0008] In a possible implementation, the liquid inlet and the liquid outlet are centrally arranged; a flow of the cold liquid through the parallel channels in the central region is a first flow, constituting a strong flow area; the central region is a region formed by the plurality of main heat dissipation teeth in the cold liquid flow passage region close to the liquid inlet and the liquid outlet; a flow of the cold liquid through the parallel channels in the edge region is a second flow, constituting a weak flow area; the edge region is a region formed by the plurality of main heat dissipation teeth in the cold liquid flow passage region away from the liquid inlet and the liquid outlet; the second flow is greater than the first flow, the heat generating element is mounted on the lower surface of the liquid cooling plate, and the position corresponding to the strong flow area; the tooth density of the flow guide tooth corresponding to the strong flow area is less than the tooth density of the flow guide tooth corresponding to the weak flow area.

[0009] In a possible implementation, the liquid inlet end of the plurality of flow guide teeth forms a water nozzle, and the water nozzle angle of the flow guide tooth corresponding to the strong flow area is greater than the water nozzle angle of the flow guide tooth corresponding to the weak flow area.

[0010] In a possible implementation, the main heat dissipation tooth end of the plurality of flow guide teeth forms a first plane; the first end of the plurality of main heat dissipation teeth forms a second plane along the cold liquid flow direction; the first plane is parallel to the second plane, and a region between the first plane and the second plane is a first mixing flow area; the first mixing flow area is used for micro-uniform flow adjustment of the cold liquid after forced flow splitting of the flow guide tooth.

[0011] In a possible implementation, the liquid inlet end of the flow guide tooth forms a V-shaped structure, the tip of the V-shaped structure points to the center of the liquid inlet; the main heat dissipation tooth end of the flow guide tooth forms a one-sided inclined structure inclined from the strong flow area to the weak flow area; and the inclined surface of the main heat dissipation tooth end of the flow guide tooth forms a first plane.

[0012] In a possible implementation, the flow guide tooth is mounted on the inner surface of the liquid cooling plate, the upper cover plate side of the flow guide tooth forms a third plane; the third plane is parallel to the inner surface of the upper cover plate, a region between the third plane and the inner surface of the upper cover plate is a second mixing flow area, and the second mixing flow area is used for micro-uniform flow adjustment of the cold liquid in the forced flow splitting process.

[0013] In a possible implementation, the flow guide tooth is mounted on the inner surface of the upper cover plate, the liquid cooling plate side of the flow guide tooth forms a fourth plane, the fourth plane is parallel to the inner surface of the liquid cooling plate, a region between the fourth plane and the inner surface of the liquid cooling plate is a third mixing flow area, and the third mixing flow area is used for micro-uniform flow adjustment of the cold liquid in the forced flow splitting process.

[0014] In a possible implementation, the outer side of the flow guide tooth away from the liquid inlet is provided with a short tooth; the height of the short tooth is less than the height of the flow guide tooth.

[0015] In a possible implementation, the flow guide fins are also arranged in the region between the main heat dissipation fins and the liquid outlet, and are arranged in a cluster shape to gather the cold liquid flowing out of the parallel channels between the main heat dissipation fins to the liquid outlet.

[0016] The application provides a split liquid cooling plate. The application is characterized in that flow guide fins and main heat dissipation fins are arranged in the cold liquid flow passage between the liquid cooling plate and the upper cover plate. The cold liquid is forced to flow through the flow guide fins arranged in a diverging manner, so that the cold liquid can flow uniformly between the main heat dissipation fins, the flow rate of the cold liquid in each main heat dissipation fin is adjusted, the cold liquid is uniformly distributed between the main heat dissipation fins, and the heat dissipation efficiency of the main heat dissipation fins is balanced. In this way, the edge overflow phenomenon in the split liquid cooling plate can be alleviated, the cold liquid in the split liquid cooling plate is uniformly distributed, and the heat dissipation efficiency of the split liquid cooling plate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0018] Figure 1 is a top view of a split liquid cooling plate provided by an embodiment of the application;

[0019] Figure 2 is a side view of a split liquid cooling plate provided by an embodiment of the application;

[0020] Figure 3 is a cross-sectional view of a split liquid cooling plate along A-A' provided by an embodiment of the application;

[0021] Figure 4 is a cross-sectional view of a split liquid cooling plate along B-B' provided by an embodiment of the application;

[0022] Figure 5 is a cross-sectional view of another split liquid cooling plate along A-A' provided by an embodiment of the application;

[0023] Figure 6 is a local enlarged view of a flow guide fin on the inner surface of a liquid cooling plate provided by an embodiment of the application;

[0024] Figure 7 is a bottom view of a split liquid cooling plate provided by an embodiment of the application;

[0025] Figure 8 is a cross-sectional view of a split liquid cooling plate along C-C' provided by an embodiment of the application;

[0026] Figure 9 is a split type liquid cooling plate provided by an embodiment of the present application along the D-D' cross-sectional view. DETAILED DESCRIPTION

[0027] In the following description, specific details are set forth, such as particular system configurations, techniques, etc., in order to provide a thorough understanding of embodiments of the application. However, persons having ordinary skill in the art will appreciate that embodiments of the application can be practiced without these specific details. In other instances, well-known methods, procedures, components, circuits, and networks have not been described in detail so as not to unnecessarily obscure aspects of the application.

[0028] In the description of the present application, unless otherwise specified, " / " means the meaning of "or", for example, A / B can mean A or B. "And / or" in this article is only a description of the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist together, and B exists alone. In addition, "at least one" means two or more. "First", "second", and the like do not limit the quantity and execution order, and "first", "second", and the like do not necessarily mean different.

[0029] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Rather, the use of the words "exemplary" or "for example" is intended to present concepts in a concrete manner. It is to be understood that the examples that are described are not intended to limit the application.

[0030] In addition, the terms "include" and "have" and any variation thereof mentioned in the description of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, but can optionally include other steps or modules that are not listed, or can optionally include other steps or modules inherent to the process, method, product or device.

[0031] In order to make the purpose, technical solutions and advantages of the present application clearer, specific embodiments will be described below with reference to the accompanying drawings of the present application.

[0032] As described in the background, in the cold liquid flow passage of the split type liquid cooling plate, due to the different distances of the heat dissipation fins from the liquid inlet and the liquid outlet, there is an imbalance problem between the heat dissipation fins, which leads to low heat dissipation efficiency of the split type liquid cooling plate.

[0033] To solve the above technical problems, as shown inFigure 1 and Figure 2 As shown, an embodiment of the present invention provides a split-type liquid cooling plate. The split-type liquid cooling plate includes: a liquid cooling plate, and an upper cover plate welded to the liquid cooling plate.

[0034] The liquid cooling plate and the upper cover plate form a cold liquid flow zone. The cold liquid flow zone is provided with main heat dissipation teeth located between the liquid inlet and the liquid outlet of the cold liquid flow zone, and guide teeth located between the liquid inlet and the main heat dissipation teeth.

[0035] The guide teeth are arranged along the edge of the water nozzle of the liquid inlet to each main heat dissipation tooth, which forces the cold liquid flowing in from the liquid inlet to be diverted. The cold liquid flows in from the liquid inlet, passes through the guide channel between each guide tooth, and then flows into the main heat dissipation channel between each main heat dissipation tooth, thereby realizing the diversion of the cold liquid between each main heat dissipation tooth.

[0036] In some embodiments, the outlet of the liquid inlet extends into the cold liquid flow area and intersects with the nozzle end of the guide teeth.

[0037] For example, the liquid inlet and the liquid outlet are disposed on the upper cover plate. The liquid outlet of the liquid inlet extends out of the inner surface of the upper cover plate and sinks to a position close to the inner surface of the liquid cooling plate. This can shorten the impact distance of the liquid after it flows out of the liquid inlet, reduce the impact of the liquid on the liquid cooling plate, and reduce liquid splashing and bubbles.

[0038] In another example, the liquid inlet and the liquid outlet are disposed on the liquid cooling plate. The liquid outlet extends out of the inner surface of the liquid cooling plate and sinks to a position close to the inner surface of the upper cover plate. This can shorten the impact distance of the liquid after it flows out of the liquid inlet, reduce the impact of the liquid on the liquid cooling plate, and reduce liquid splashing and bubbles.

[0039] In another example, the liquid inlet is located on the upper cover plate, and the liquid outlet is located on the liquid cooling plate.

[0040] In another example, the liquid inlet is disposed on the liquid cooling plate, and the liquid outlet is disposed on the upper cover plate.

[0041] It should be noted that the positions of the liquid inlet and outlet can be adjusted according to the specific installation requirements of the split liquid cooling plate, which will not be elaborated here.

[0042] For example, such as Figure 3 As shown, multiple guide teeth are provided between the main heat dissipation teeth and the liquid inlet. They are arranged in a divergent and radial pattern from the edge of the water nozzle of the liquid inlet to each main heat dissipation tooth, which forces the cold liquid flowing into the liquid inlet to be diverted to each main heat dissipation tooth.

[0043] Another example, such as Figure 3As shown, the guide teeth are also disposed in the area between the main heat dissipation teeth and the liquid outlet, and are arranged in a clustered manner to gather the cold liquid flowing out from the parallel channels between the main heat dissipation teeth to the liquid outlet, thereby realizing the cold liquid guidance.

[0044] For example, guide teeth can be installed on the liquid cooling plate to force the coolant to flow separately. Figure 3 This is a cross-sectional view of the split liquid cooling plate along line A-A'. (See diagram below.) Figure 3 As shown, within the coolant flow zone, multiple guide teeth are provided on the inner surface of the liquid cooling plate along the liquid inlet to each main heat dissipation tooth, forcibly guiding the coolant flowing in from the liquid inlet to each main heat dissipation tooth. Alternatively, within the coolant flow zone, multiple guide teeth are provided on the inner surface of the liquid cooling plate along each main heat dissipation tooth to the liquid outlet, forcibly converging the coolant flowing out from each main heat dissipation tooth to the liquid outlet.

[0045] As another example, the guide teeth can also be installed on the upper cover plate to force the coolant to flow separately. Figure 4 This is a cross-sectional view of the split liquid cooling plate along line B-B'. (See diagram below.) Figure 4 As shown, within the coolant flow zone, multiple guide teeth are provided on the inner surface of the upper cover plate along the liquid inlet to each main heat dissipation tooth, forcibly guiding the coolant flowing in from the liquid inlet to each main heat dissipation tooth. Alternatively, within the coolant flow zone, multiple guide teeth are provided on the inner surface of the upper cover plate along each main heat dissipation tooth to the liquid outlet, forcibly converging the coolant flowing out from each main heat dissipation tooth to the liquid outlet.

[0046] This invention provides a split-type liquid cooling plate. Guide teeth and main heat dissipation teeth are respectively arranged in the liquid flow area between the liquid cooling plate and the upper cover plate. The divergent guide teeth force the liquid to flow separately, allowing the liquid to flow evenly between the main heat dissipation teeth. The liquid flow rate of each main heat dissipation tooth can be regulated, achieving uniform flow of liquid among the main heat dissipation teeth and balancing the heat dissipation efficiency. This can alleviate the phenomenon of insufficient flow at the inner edge of the split-type liquid cooling plate, achieve uniform liquid flow within the split-type liquid cooling plate, and improve the heat dissipation efficiency of the split-type liquid cooling plate.

[0047] Optional, such as Figure 3 As shown, the inlet and outlet can be centered.

[0048] Correspondingly, the flow of the coolant through the parallel channels in the central region is the first flow, forming a strong flow zone; the central region is the area formed by multiple main heat dissipation teeth near the inlet and outlet within the coolant flow zone; the flow of the coolant through the parallel channels in the edge region is the second flow, forming a weak flow zone; the edge region is the area formed by multiple main heat dissipation teeth away from the inlet and outlet within the coolant flow zone.

[0049] The second flow is greater than the first flow, and the tooth density of the guide flow tooth corresponding to the strong flow area is less than the tooth density of the guide flow tooth corresponding to the weak flow area.

[0050] In this way, the heat generating element is installed at the position corresponding to the strong flow area on the lower surface of the liquid cooling plate, that is, the central area of the lower surface of the liquid cooling plate. The central area of the lower surface of the liquid cooling plate is the core heat generating area, the second flow is greater than the first flow, and the core heat generating area corresponding to the strong flow area can have a higher cold liquid flow rate, so that the core heat generating area with the most heat can be cooled by the strong flow. While balancing the cold liquid in the strong flow area and the weak flow area, the cooling efficiency of the strong flow area is ensured, the heat generating element is better cooled, and the cooling efficiency of the split liquid cooling plate is improved.

[0051] In the present application, the tooth density of the guide flow tooth in the strong flow area is set to be less than the tooth density of the guide flow tooth in the weak flow area, so that more cold liquid flows through the strong flow area, the flow rate is faster, and the flow is shorter, realizing the concentrated cooling of the strong flow area.

[0052] In some embodiments, the inlet end of the plurality of guide flow teeth forms a water nozzle, and the water nozzle angle of the guide flow tooth corresponding to the strong flow area is greater than the water nozzle angle of the guide flow tooth corresponding to the weak flow area.

[0053] In order to realize that the tooth density of the guide flow tooth corresponding to the strong flow area is less than the tooth density of the guide flow tooth corresponding to the weak flow area, the water nozzle angle of the guide flow tooth is designed in the present application, so that the water nozzle angle of the guide flow tooth in the strong flow area is greater than the water nozzle angle of the guide flow tooth in the weak flow area. In this way, the cold liquid flow resistance in the strong flow area can be reduced, and the strong flow area can flow with the maximum flow and the fastest flow rate.

[0054] Exemplarily, Figure 5 is another split liquid cooling plate provided by an embodiment of the present application along the A-A' sectional view; Figure 6 is a partial enlarged view of the guide flow tooth on the inner surface of the liquid cooling plate. As shown in Figure 5 and Figure 6 As shown, the water nozzle angle of the guide flow tooth corresponding to the strong flow area is greater than the water nozzle angle of the guide flow tooth corresponding to the weak flow area, so that more cold liquid flows through the strong flow area, the flow is larger, and the flow rate is faster. The cooling demand of the strong flow area is guaranteed, the core heat generating area where the heat generating element is installed is concentratedly cooled, and the cooling efficiency of the liquid cooling plate is improved.

[0055] As a possible implementation manner, the guide flow teeth corresponding to the weak flow area are uniformly arranged. Exemplarily, the water nozzle angles between the guide flow teeth corresponding to the weak flow area are the same, so that the cold liquid flow into each main cooling tooth in the weak flow area is the same, realizing the uniform flow of the cold liquid between the main cooling teeth in the weak flow area, avoiding the imbalance and over-flow of the cold liquid in the weak flow area, and improving the cooling efficiency of the weak flow area.

[0056] Exemplarily, as shown in Figure 6As shown in the drawings, the spacing between the two adjacent guide vanes in the weak flow area is the same, and the angle of the water nozzle is the same, so that the cold liquid flow into each part of the weak flow area is the same, ensuring the balance of the cold liquid in the weak flow area and improving the heat dissipation efficiency of the weak flow area.

[0057] Optionally, the liquid inlet and the liquid outlet can also be arranged on one side of the liquid cooling plate, close to the edge of the liquid cooling plate. The cold liquid flow of each main heat dissipation fin between the liquid inlet and the liquid outlet is the same, forming a strong flow area. The area close to the other side of the liquid cooling plate outside the strong flow area is a weak flow area. The cold liquid flow of the weak flow area is greater than that of the strong flow area.

[0058] Optionally, the liquid inlet and the liquid outlet can also be arranged in a staggered manner. The cold liquid flows through the main heat dissipation fins between the liquid inlet and the liquid outlet in the same flow, which is the first flow, forming a strong flow area. The two sides of the strong flow area along the cold liquid flow direction are weak flow areas, and the cold liquid flow of the weak flow area is greater than that of the strong flow area.

[0059] In this way, the liquid inlet and the liquid outlet can also be arranged in a staggered manner. On the one hand, the same flow design between the main heat dissipation fins in the strong flow area is realized, the cold liquid flows in the same flow, the cold liquid in the strong flow area is evenly distributed, the imbalance in the strong flow area is avoided, and the heat dissipation efficiency of the strong flow area is improved. On the other hand, the liquid inlet and the liquid outlet can also be arranged in a staggered manner, increasing the coverage area of the strong flow area, i.e. increasing the area of the core heat dissipation area, and improving the heat dissipation efficiency of the split type liquid cooling plate.

[0060] Optionally, the present application also designs the spacing area between the guide vanes and the main heat dissipation fins, and the spacing area between the guide vanes and the upper and lower surfaces, realizes the micro-uniform flow of the cold liquid, and ensures the heat dissipation effect.

[0061] As shown in the drawings, Figure 5 and Figure 6 As shown in the drawings, the main heat dissipation fins of the plurality of guide vanes form a first plane; along the cold liquid flow direction, the first ends of the plurality of main heat dissipation fins form a second plane; the first plane is parallel to the second plane, and the area between the first plane and the second plane is a first mixing area; the first mixing area is used for micro-uniform flow adjustment of the cold liquid forced to flow by the guide vanes.

[0062] In this way, there is a certain distance gap between the first plane formed by the guide vanes and the second plane formed by the main heat dissipation fins, which constitutes a first mixing area. The cold liquid forced to flow by the guide vanes is micro-uniformly flowed, the cold liquid is mixed uniformly, the temperature imbalance of the cold liquid between the guide vanes is avoided, and the overall heat dissipation efficiency of the liquid cooling plate is improved.

[0063] As a possible implementation manner, the structure of the guide vanes is improved, the flow resistance generated by the guide vanes is reduced, the cold liquid flow rate is improved, and the heat dissipation efficiency is ensured.

[0064] As shown in the drawings,Figure 6 As shown, the inlet end of the guide tooth has a V-shaped structure, with the tip of the V-shape pointing towards the center of the inlet. This V-shaped structure of the guide tooth reduces the fluid resistance of the guide tooth to the cold liquid during forced liquid separation, ensuring the flow rate of the cold liquid.

[0065] In another example, the main heat dissipation tooth end of the guide tooth has a single-sided inclined structure that slopes from the strong flow region to the weak flow region; the inclined surface of the main heat dissipation tooth end of the guide tooth forms a first plane.

[0066] In this way, the single-sided inclined structure of the guide teeth can guide the coolant, reduce fluid resistance, and ensure the direction and velocity of coolant flow. Furthermore, the inclined surface at the tail end of the guide teeth forms the first plane, directing the coolant to the main heat dissipation teeth in the weak flow zone, reducing coolant fluid resistance. This ensures both the direction and velocity of coolant flow, as well as coolant mixing, avoiding coolant imbalance and improving the overall heat dissipation efficiency of the liquid cooling plate.

[0067] For example, Figure 7 This is a bottom view of a split liquid cooling plate. Figure 8 This is a cross-sectional view of a split liquid cooling plate along line C-C'. (Example) Figure 6 , Figure 7 and Figure 8 As shown, the guide teeth can be installed on the inner surface of the liquid cooling plate, and the upper cover side of the guide teeth forms a third plane; the third plane is parallel to the inner surface of the upper cover plate, and the area between the third plane and the inner surface of the upper cover plate is a second mixing zone, which is used to perform micro-uniform flow adjustment of the coolant during the forced flow splitting process.

[0068] Thus, the present invention can construct a second mixing zone between the third plane and the inner surface of the upper cover plate, perform micro-uniform flow of the coolant during the flow process, make the coolant mix evenly, avoid uneven coolant temperature between the guide teeth, and improve the overall heat dissipation efficiency of the liquid cooling plate.

[0069] As another example, the guide teeth can also be installed on the inner surface of the upper cover plate. The liquid cooling plate side of the guide teeth forms a fourth plane, which is parallel to the inner surface of the liquid cooling plate. The area between the fourth plane and the inner surface of the liquid cooling plate is a third mixing zone, which is used to perform micro-flow equalization adjustment of the coolant during the forced flow separation process.

[0070] Thus, the present invention can construct a second mixing zone between the fourth plane and the inner surface of the liquid cooling plate, perform micro-uniform flow of the coolant during the flow process, make the coolant mix evenly, avoid uneven coolant temperature between the guide teeth, and improve the overall heat dissipation efficiency of the liquid cooling plate.

[0071] Optional, Figure 9 This is a cross-sectional view of the split liquid cooling plate along line D-D'. (See attached image.) Figure 6 ,Figure 8 and Figure 9 As shown, short teeth are provided on the outer side of the guide teeth away from the liquid inlet; the height of the short teeth is less than the height of the guide teeth. In this way, the heat dissipation short teeth can increase the contact area between the coolant and the liquid cooling plate, thereby enhancing the heat dissipation of the liquid cooling plate.

[0072] Furthermore, the height of the heat dissipation dwarf teeth is less than the height of the flow guide teeth. While enhancing the heat dissipation of the liquid cooling plate, no heat dissipation dwarf teeth are set in the high flow area. This balances the flow resistance between the weak and strong flow areas, which not only enhances the heat dissipation in the weak flow area of ​​the liquid cooling plate, i.e., the edge area of ​​the liquid cooling plate, but also ensures the flow rate of the coolant in the strong flow area, thus ensuring the heat dissipation efficiency in the strong flow area and improving the overall heat dissipation of the split liquid cooling plate.

[0073] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A split liquid cold plate, comprising: Comprise: Liquid cooling plate, and upper cover plate welded with the liquid cooling plate; The liquid cooling plate and the upper cover plate form a cold liquid flow passage, and the cold liquid flow passage is provided with a main heat dissipation tooth located between the liquid inlet and the liquid outlet of the cold liquid flow passage, and a flow guide tooth located between the liquid inlet and the main heat dissipation tooth; The flow guide tooth is arranged divergently from the water nozzle edge of the liquid inlet to each main heat dissipation tooth, and the cold liquid flowing from the liquid inlet is forced to flow; the cold liquid flows from the liquid inlet, passes through the flow guide channel between each flow guide tooth, and then flows into the main heat dissipation channel between each main heat dissipation tooth, so that the cold liquid is divided in the main heat dissipation tooth; The flow guide tooth is installed on the inner surface of the liquid cooling plate, and the upper cover plate side of the flow guide tooth is a third plane; the third plane is parallel to the inner surface of the upper cover plate, and the area between the third plane and the inner surface of the upper cover plate is a second mixing flow area, which is used for micro-uniform flow adjustment of the cold liquid in the forced flow process.

2. The split liquid cold plate of claim 1, wherein, The liquid outlet of the liquid inlet extends into the cold liquid flow passage and is staggered with the water nozzle end of the flow guide tooth.

3. The split liquid cold plate of claim 1, wherein, The liquid inlet and the liquid outlet are arranged on the upper cover plate; Or, the liquid inlet and the liquid outlet are arranged on the liquid cooling plate; Or, the liquid inlet is arranged on the upper cover plate, and the liquid outlet is arranged on the liquid cooling plate; Or, the liquid inlet is arranged on the liquid cooling plate, and the liquid outlet is arranged on the upper cover plate.

4. The split liquid cold plate of any of claims 1-3, wherein, The liquid inlet and the liquid outlet are arranged centrally; The flow process of the cold liquid flowing through the parallel channels in the central area is a first flow process, which constitutes a strong flow area; the central area is an area formed by a plurality of main heat dissipation teeth in the cold liquid flow passage close to the liquid inlet and the liquid outlet; The flow process of the cold liquid flowing through the parallel channels in the edge area is a second flow process, which constitutes a weak flow area; the edge area is an area formed by a plurality of main heat dissipation teeth in the cold liquid flow passage away from the liquid inlet and the liquid outlet; Wherein, the second flow process is greater than the first flow process, the heat generating element is installed on the lower surface of the liquid cooling plate, and the tooth density of the flow guide tooth corresponding to the strong flow area is less than the tooth density of the flow guide tooth corresponding to the weak flow area.

5. The split liquid cold plate of claim 4, wherein, The water nozzle angle of the flow guide tooth corresponding to the strong flow area is greater than the water nozzle angle of the flow guide tooth corresponding to the weak flow area.

6. The split liquid cold plate of claim 1, wherein, The main heat dissipation tooth end of the plurality of flow guide teeth forms a first plane; along the cold liquid flow direction, the first end of the plurality of main heat dissipation teeth forms a second plane; the first plane is parallel to the second plane, and the area between the first plane and the second plane is a first mixing flow area; the first mixing flow area is used for micro-uniform flow adjustment of the cold liquid after forced flow of the flow guide tooth.

7. The split liquid cold plate of claim 6, wherein, The liquid inlet end of the flow guide tooth is in a V-shaped structure, and the tip of the V-shaped structure points to the center of the liquid inlet; The main heat dissipation tooth end of the flow guide tooth is in a one-sided inclined structure inclined from the strong flow area to the weak flow area; the inclined surface of the main heat dissipation tooth end of the flow guide tooth constitutes a first plane.

8. The split liquid cold plate of claim 1, wherein, The outer side of the flow guide tooth away from the liquid inlet is provided with a short tooth; the height of the short tooth is less than the height of the flow guide tooth.

9. A split-type liquid cooling plate, characterized in that, Comprise: Liquid cooling plate, and upper cover plate welded with the liquid cooling plate; The liquid cooling plate and the upper cover plate form a cold liquid flow passage, and the cold liquid flow passage is provided with main heat dissipation teeth located between the liquid inlet and the liquid outlet of the cold liquid flow passage and flow guide teeth located between the liquid inlet and the main heat dissipation teeth; The flow guide teeth are arranged in a diverging manner from the water nozzle edge of the liquid inlet to each main heat dissipation tooth, and the cold liquid flowing into the liquid inlet is forced to flow; the cold liquid flows into each main heat dissipation tooth through the flow guide channel between the flow guide teeth, and then flows into the main heat dissipation channel between the main heat dissipation teeth, so that the cold liquid is divided in the main heat dissipation teeth. The flow guide teeth are installed on the inner surface of the upper cover plate, the liquid cooling plate side of the flow guide teeth is a fourth plane, the fourth plane is parallel to the inner surface of the liquid cooling plate, and the area between the fourth plane and the inner surface of the liquid cooling plate is a third mixing flow area, which is used for micro-uniform flow adjustment of the cold liquid in the forced flow process.

10. The split liquid cold plate of claim 9, wherein, The liquid outlet of the liquid inlet extends into the cold liquid flow passage and is staggered with the water nozzle end of the flow guide teeth.

11. The split liquid cold plate of claim 9, wherein, The liquid inlet and the liquid outlet are arranged on the upper cover plate. Alternatively, the liquid inlet and the liquid outlet are arranged on the liquid cooling plate. Alternatively, the liquid inlet is arranged on the upper cover plate, and the liquid outlet is arranged on the liquid cooling plate. Alternatively, the liquid inlet is arranged on the liquid cooling plate, and the liquid outlet is arranged on the upper cover plate.

12. The split liquid cold plate of any of claims 9-11, wherein, The liquid inlet and the liquid outlet are arranged centrally. The flow process of the cold liquid flowing through the parallel channels in the central area is a first flow process, constituting a strong flow area; the central area is an area formed by a plurality of main heat dissipation teeth close to the liquid inlet and the liquid outlet in the cold liquid flow passage; The flow process of the cold liquid flowing through the parallel channels in the edge area is a second flow process, constituting a weak flow area; the edge area is an area formed by a plurality of main heat dissipation teeth away from the liquid inlet and the liquid outlet in the cold liquid flow passage; Wherein, the second flow process is greater than the first flow process, the heat generating element is installed on the lower surface of the liquid cooling plate, and the tooth density of the flow guide tooth corresponding to the strong flow area is less than the tooth density of the flow guide tooth corresponding to the weak flow area.

13. The split liquid cold plate of claim 12, wherein, The water nozzle angle of the flow guide tooth corresponding to the strong flow area is greater than the water nozzle angle of the flow guide tooth corresponding to the weak flow area.

14. The split liquid cold plate of claim 9, wherein, The main heat dissipation tooth end of the plurality of flow guide teeth forms a first plane; along the cold liquid flow direction, the first end of the plurality of main heat dissipation teeth forms a second plane; the first plane is parallel to the second plane, and the area between the first plane and the second plane is a first mixing flow area; the first mixing flow area is used for micro-uniform flow adjustment of the cold liquid after the forced flow of the flow guide teeth.

15. The split liquid cold plate of claim 14, wherein, The liquid inlet end of the flow guide tooth is in a V-shaped structure, and the tip of the V-shaped structure points to the center of the liquid inlet; The main heat dissipation tooth end of the flow guide tooth is in a one-sided inclined structure inclined from the strong flow area to the weak flow area; the inclined surface of the main heat dissipation tooth end of the flow guide tooth forms a first plane.

16. The split liquid cold plate of claim 9, wherein, The outer side of the flow guide tooth away from the liquid inlet is provided with a short tooth; the height of the short tooth is less than the height of the flow guide tooth.

Images