Porous sheet type cold plate

Abstract

A porous sheet type cold plate disclosed by the present invention comprises a liquid cooling pipe layer and a liquid cooling plate, the two sides of the liquid cooling plate are respectively provided with a heat dissipation layer and a heat insulation layer, the liquid cooling pipe layer, the heat dissipation layer and the heat insulation layer are respectively connected with the liquid cooling plate through bolts, the liquid cooling pipe layer comprises a liquid cooling pipe, and the two ends of the liquid cooling pipe are provided with a cooling liquid inlet and a cooling liquid outlet. And the cooling liquid inlet and the cooling liquid outlet are respectively communicated with two ends of the liquid cooling pipe. The liquid cooling pipe and the heat dissipation layer are connected to the liquid cooling plate through bolts, and the heat dissipation layer and the heat insulation layer are connected through bolts. And a cooling working medium is connected with the cooling liquid inlet and the cooling liquid outlet through pipelines, circularly flows in the pipelines of the liquid cooling pipes, and exchanges heat with the heat dissipation layer.

Description

Technical Field

[0001] The invention belongs to the technical field of liquid cooling equipment, and in particular relates to a porous thin-sheet cold plate. Background Art

[0002] Most of the current data centers use air cooling, which has low heat dissipation efficiency and has severely limited the performance improvement of the equipment. At the same time, with the development of power electronics technology towards high speed, multi-function, large capacity and small size, especially the extensive and in-depth application of large-scale and ultra-large-scale integrated circuits, the power of chips has become higher and higher. Air cooling can no longer meet the heat dissipation needs of data centers. The use of cold plate heat dissipation has become a better choice for solving the heat dissipation of data centers. It is foreseeable that cold plate heat dissipation will be used more in the future. However, there is still room for improvement in the heat dissipation efficiency and weight of cold plate heat dissipation. Existing liquid-cooled cooling equipment has low heat dissipation efficiency, heavy weight, difficulty in processing, and high production cost. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and provide a porous thin-sheet cold plate that can improve the heat dissipation efficiency of the cold plate, reduce the weight and reduce the difficulty of processing.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a porous thin-sheet cold plate, comprising a liquid-cooling tube layer and a liquid-cooling plate, a heat dissipation layer and a heat insulation layer are respectively arranged on both sides of the liquid-cooling plate, the liquid-cooling tube layer, the heat dissipation layer and the heat insulation layer are respectively connected to the liquid-cooling plate by bolts, the liquid-cooling tube layer comprises a liquid-cooling tube, and a coolant inlet and a coolant outlet are arranged at both ends of the liquid-cooling tube, and the coolant inlet and the coolant outlet are respectively connected to the two ends of the liquid-cooling tube; the liquid-cooling tube and the heat dissipation layer are connected to the liquid-cooling plate by bolts, and the heat dissipation layer and the heat insulation layer are connected by bolts; the cooling medium is connected to the coolant inlet and the coolant outlet through a pipeline, circulates in the pipeline of the liquid-cooling tube, and exchanges heat with the heat dissipation layer.

[0005] Preferably, the liquid cooling tube is a bent structure in an "S" shape, and the bent parts of the liquid cooling tube are connected to form a liquid cooling tube connecting plate. The liquid cooling plate connecting plate is provided with liquid cooling plate fixing screw holes, and the bolts pass through the liquid cooling plate fixing screw holes to connect to the heat dissipation layer.

[0006] Preferably, the number of the liquid cooling tube connecting plates is 5.

[0007] Preferably, the heat dissipation layer is a plate-shaped structure made of heat-conducting metal Al, Cu or an alloy of Al and Cu, and the heat dissipation layer is in close contact with the liquid cooling tube layer.

[0008] Preferably, a series of long heat dissipation layer gaps are arranged on the heat dissipation layer, and the heat dissipation layer gaps are parallel to each other, which can reduce the weight and provide channels for air convection.

[0009] Preferably, a first heat dissipation fixing screw hole is provided on the heat dissipation layer, the long side of the heat dissipation layer protrudes outward to form a heat dissipation layer protrusion, and a second heat dissipation fixing screw hole is provided on the heat dissipation layer protrusion. The first heat dissipation fixing screw hole corresponds to the liquid cooling plate fixing screw hole, and the bolt passes through the second heat dissipation fixing screw hole to be connected to the insulation layer.

[0010] Preferably, the structure of the heat insulation layer is the same as that of the heat dissipation layer, and they are arranged in parallel.

[0011] Preferably, the structure of the liquid cooling plate is the same as that of the heat dissipation layer.

[0012] The beneficial effects of the present invention are:

[0013] 1. The porous thin-sheet cold plate provided by the present invention can further improve the heat dissipation efficiency of cold plate liquid cooling, reduce weight and reduce processing difficulty. By simplifying the internal coolant channel, adding through holes to enhance heat convection or cooperating with air cooling, the purpose of improving the heat dissipation efficiency of the cold plate, reducing weight and reducing processing difficulty can be achieved, further expanding the advantages of cold plate liquid cooling.

[0014] 2. The present invention is composed of a cooling tube layer, a heat dissipation layer and a heat insulation layer. Compared with the traditional integrated cold plate, it is more convenient in processing, transportation, installation, maintenance and upkeep, which is reflected in but not limited to: the heat dissipation layer and the heat insulation layer are thinner, and a large number of supporting and connecting parts are removed from the cooling tube layer, making the overall weight lighter; it is easier to process the cooling medium pipeline; it can be disassembled for transportation; after damage, only the corresponding part needs to be replaced, and the entire part does not need to be scrapped;

[0015] 3. The present invention further improves the heat dissipation efficiency of the cold plate liquid cooling. At the same time, the design of dividing the upper and lower surfaces of the cold plate into a heat dissipation layer and a heat insulation layer further improves the cooling efficiency and reduces the consumption of cooling resources by irrelevant heat sources in the environment.

[0016] 4. The strip-shaped gaps added on the heat dissipation layer and the heat insulation layer of the present invention cooperate with the gaps between the pipes in the cooling tube layer to enhance the heat convection between the heat dissipation area - the cold plate - the external air; and auxiliary air cooling equipment can also be combined to improve the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a porous thin-sheet cold plate of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the liquid cooling tube layer of the present invention;

[0019] Figure 3 It is a schematic diagram of the heat dissipation layer structure of the present invention;

[0020] Figure 4 It is a schematic structural diagram of the heat insulation layer of the present invention.

[0021] Explanation of the accompanying drawings: 1. liquid cooling tube layer; 2. liquid cooling plate; 3. heat dissipation layer; 4. thermal insulation layer; 11. liquid cooling tube; 31. heat dissipation layer gap; 32. first heat dissipation fixing screw hole; 33. heat dissipation layer protrusion; 34. second heat dissipation fixing screw hole; 111. cooling liquid inlet; 112. cooling liquid outlet; 113. liquid cooling tube connecting plate; 114. liquid cooling plate fixing screw hole. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0023] like Figures 1 to 4 As shown, a porous thin-sheet cold plate provided by the present invention comprises a liquid cooling tube layer 1 and a liquid cooling plate 2, a heat dissipation layer 3 and a heat insulation layer 4 are respectively arranged on both sides of the liquid cooling plate 2, the liquid cooling tube layer 1, the heat dissipation layer 3 and the heat insulation layer 4 are respectively connected to the liquid cooling plate 2 by bolts, the liquid cooling tube layer 1 comprises a liquid cooling tube 11, and a coolant inlet 111 and a coolant outlet 112 are arranged at both ends of the liquid cooling tube 11, and the coolant inlet 111 and the coolant outlet 112 are respectively connected to both ends of the liquid cooling tube 11. The liquid cooling tube 11 is connected to the heat dissipation layer 3 on the liquid cooling plate 2 by bolts, and the heat dissipation layer 3 is connected to the heat insulation layer 4 by bolts. The cooling medium is connected to the coolant inlet 111 and the coolant outlet 112 through a pipeline, circulates in the pipeline of the liquid cooling tube 11, and performs heat exchange with the heat dissipation layer 3.

[0024] like Figure 2 As shown, the liquid cooling tube 11 is a bent structure in an "S" shape, and the bent parts of the liquid cooling tube 11 are connected to form a liquid cooling tube connecting plate 113, and the liquid cooling plate fixing screw hole 114 is provided on the liquid cooling tube connecting plate 113, and the bolt passes through the liquid cooling plate fixing screw hole 114 to connect with the heat dissipation layer 2. The number of liquid cooling tube connecting plates 113 is 5, and they are respectively located at the bent parts of the liquid cooling tube 11. In actual use, the number and position of the bending of the liquid cooling tube 11 are set according to actual use needs.

[0025] like Figure 3 As shown, the heat dissipation layer 3 is a plate-shaped structure made of heat-conducting metals such as Al, Cu or an alloy of Al and Cu, and the heat dissipation layer 3 is in close contact with the liquid cooling tube layer 1 .

[0026] The heat dissipation layer 3 is characterized by high thermal conductivity and can perform efficient heat exchange. In actual use, the electronic device is the device to be cooled. There is a heat dissipation area on the electronic device. The heat dissipation layer 3 is in direct contact with the heat dissipation area and is also in close contact with the liquid cooling tube 1. The heat dissipation layer 3 absorbs the heat generated by the electronic device, and then the cooling medium in the liquid cooling tube 11 absorbs the heat and takes it away, thereby cooling the electronic device.

[0027] In actual use, an existing auxiliary air cooling device can be installed around the heat dissipation layer 3 to further improve the heat dissipation efficiency of the device.

[0028] A series of long heat dissipation layer gaps 31 are arranged on the heat dissipation layer 3. The heat dissipation layer gaps 31 are parallel to each other, which can reduce the weight and provide channels for air convection.

[0029] In this embodiment, the number of the heat dissipation layer gaps 31 is seven and they are distributed in parallel. The long strip-shaped gaps 31 arranged on the heat dissipation layer 3 can provide a channel for air convection in the gap space between the cold plate and the heat dissipation area surface while reducing weight.

[0030] A first heat dissipation fixing screw hole 32 is provided on the heat dissipation layer 3, and the long side of the heat dissipation layer 3 protrudes outward to form a heat dissipation layer protrusion 33, and a second heat dissipation fixing screw hole 34 is provided on the heat dissipation layer protrusion 33. The first heat dissipation fixing screw hole 2 corresponds to the liquid cooling plate fixing screw hole 114, and the bolt passes through the second heat dissipation fixing screw hole 34 to be connected to the insulation layer 4.

[0031] The structure of the heat insulation layer 4 is the same as that of the heat dissipation layer 3, and the structure of the liquid cooling plate 2 is the same as that of the heat dissipation layer 3, and they are arranged in parallel. In the present invention, the liquid cooling tube layer 1 and the liquid cooling plate 2 are connected by bolts, and the bolts pass through the heat dissipation layer 3, the liquid cooling plate 2 and the heat insulation layer 4 in sequence to connect with the external existing equipment.

[0032] In addition to cooperating with the liquid cooling tube layer 1 and the heat dissipation layer 3 to fix the components and form the whole cold plate, the heat insulation layer 4 can also reduce the heat exchange between the liquid cooling tube layer 1 and other objects on the side of the non-contact surface of the heat dissipation area on the basis of accelerating air flow, so as to reduce the waste of cooling resources. In order to reduce the heat exchange between the heat insulation layer 4 and the liquid cooling tube layer 1, the following optional measures are available in actual use: the heat insulation layer 4 is not in direct contact with the liquid cooling tube layer 1, and the thermal conductivity of the air is low, which can effectively isolate the heat exchange between the heat insulation layer and the cooling tube layer. The heat insulation layer 4 uses rigid heat insulation materials, which can also achieve the effect of isolating the heat exchange between the heat insulation layer 4 and the liquid cooling tube layer 1. Or the above two measures are adopted at the same time to further improve the effect of heat exchange between the heat insulation layer 4 and the liquid cooling tube layer 1. A large long strip gap is opened on the heat insulation layer 4 to strengthen the air convection between the heat dissipation area-cold plate-the outside world and improve the heat dissipation efficiency.

[0033] In this example, the heat insulation layer 4 uses the same heat dissipation material as the heat dissipation layer 3, and a gap is left between the heat insulation layer 4 and the liquid cooling tube layer 1 to achieve a heat preservation effect. The cooling medium is supplied by an external cooling device and a pumping device, connected to the liquid cooling tube 11 through an external pipeline, circulated in the liquid cooling tube 11, and performs heat exchange with the heat dissipation layer.

[0034] In this example, the material used for the heat insulation layer 4 is the same as that for the heat dissipation layer 3, so as to reduce the difficulty of processing and avoid potential structural failures caused by different thermal strains of different materials. The heat insulation layer 4 is not in direct contact with the liquid cooling tube layer 1, and a gap is left between the two. The thermal conductivity of the air in the gap is low, which can effectively isolate the heat exchange between the heat insulation layer and the cooling tube layer. Reduce the heat exchange between the cooling tube layer and other objects on the non-contact side of the heat dissipation area to reduce the waste of cooling resources.

[0035] After the liquid cooling pipe layer 1, the heat dissipation layer 3 and the thermal insulation layer 4 are assembled, the cold plate can be fixed in the existing data center equipment through the screw holes connected on the heat dissipation layer 3 and the thermal insulation layer 4, and connected to the existing coolant pipeline, cooling equipment and pumping equipment, and can be used for cooling the data center.

[0036] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations that do not deviate from the essence of the present invention based on the technical revelations disclosed by the present invention, and these variations and combinations are still within the protection scope of the present invention.

Claims

1. A porous thin-sheet cold plate, characterized in that: The invention comprises a liquid cooling tube layer (1) and a liquid cooling plate (2), a heat dissipation layer (3) and a heat insulation layer (4) are respectively arranged on both sides of the liquid cooling plate (2), the liquid cooling tube layer (1), the heat dissipation layer (3) and the heat insulation layer (4) are respectively connected to the liquid cooling plate (2) by bolts, the liquid cooling tube layer (1) comprises a liquid cooling tube (11), and a cooling liquid inlet (111) and a cooling liquid outlet (112) are respectively arranged at both ends of the liquid cooling tube (11), and the cooling liquid inlet (111) and the cooling liquid outlet (112) are respectively connected to the two ends of the liquid cooling tube (11); the liquid cooling tube (11) and the heat dissipation layer (3) are connected to the liquid cooling plate (2) by bolts, and the heat dissipation layer (3) and the heat insulation layer (4) are also connected by bolts; the cooling medium is connected to the cooling liquid inlet (111) and the cooling liquid outlet (112) through a pipeline, circulates in the pipeline of the liquid cooling tube (11), and performs heat exchange with the heat dissipation layer (3).

2. A porous thin-sheet cold plate according to claim 1, characterized in that: The liquid cooling tube (11) is a bent structure in an "S" shape; the bent parts of the liquid cooling tube (11) are connected to form a liquid cooling tube connecting plate (113); a liquid cooling plate fixing screw hole (114) is provided on the liquid cooling plate connecting plate (113); bolts pass through the liquid cooling plate fixing screw hole (114) to be connected to the heat dissipation layer (2).

3. The porous thin-sheet cold plate according to claim 1, characterized in that: The number of the liquid cooling pipe connecting plates (113) is 5.

4. The porous thin-sheet cold plate according to claim 1, characterized in that: The heat dissipation layer (3) is a plate-shaped structure made of heat-conducting metals such as Al, Cu or an alloy of Al and Cu, and the heat dissipation layer (3) is in close contact with the liquid cooling tube layer (1).

5. The porous thin-sheet cold plate according to claim 1, characterized in that: The heat dissipation layer (3) is provided with a series of long heat dissipation layer gaps (31), and the heat dissipation layer gaps (31) are parallel to each other, thereby reducing the weight and providing channels for air convection.

6. The porous thin-sheet cold plate according to claim 1, characterized in that: The heat dissipation layer (3) is provided with a first heat dissipation fixing screw hole (32), the long side of the heat dissipation layer (3) protrudes outward to form a heat dissipation layer protrusion (33), and the heat dissipation layer protrusion (33) is provided with a second heat dissipation fixing screw hole (34), the first heat dissipation fixing screw hole (2) corresponds to the liquid cooling plate fixing screw hole (114), and the bolt passes through the second heat dissipation fixing screw hole (34) and is connected to the thermal insulation layer (4).

7. The porous thin-sheet cold plate according to claim 1, characterized in that: The structure of the heat insulation layer (4) is the same as that of the heat dissipation layer (3), and they are arranged in parallel.

8. The porous thin-sheet cold plate according to claim 1, characterized in that: The structure of the liquid cooling plate (2) is the same as that of the heat dissipation layer (3).

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