Server cold plate

Abstract

The utility model relates to a server cold plate which comprises a heat conduction bottom plate, a closed side plate and a cooling pipeline, the lower end of the closed side plate is fixedly connected with an upper panel of the heat conduction bottom plate in a sealed mode, and the upper end of the closed side plate is fixedly connected with the lower side face of the cooling pipeline in a sealed mode. A vacuum cavity is formed by an upper panel of the heat conduction bottom plate, the inner side face of the closed side plate and the lower side face of the cooling pipeline, a liquid cooling working medium is stored in the vacuum cavity, and the cooling pipeline is communicated with a pipe network of an external cooling tower or a cooling-water machine. Chilled water in a cooling tower or a cooling-water machine can be directly supplied, and secondary heat exchange through a CDU is not needed. And water can be used as a liquid cooling working medium, so that the problem of high cost of the existing liquid cooling working medium can be effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of server heat dissipation devices, specifically to a server cold plate. Background Technology

[0002] Currently, the server liquid cooling market is dominated by single-phase cold plate liquid cooling, while two-phase cold plates have not been widely used due to factors such as high cost of phase change working fluid and environmental unfriendliness. However, the heat carried away by the phase change working fluid during phase change is considerable. Therefore, it is necessary to develop a two-phase cold plate that has low manufacturing cost and does not pollute the environment. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a server cold plate. The technical solution of this utility model embodiment is as follows:

[0004] A server cooling plate includes a heat-conducting base plate, a closed side plate, and cooling pipes. The lower end of the closed side plate is sealed and fixedly connected to the upper panel of the heat-conducting base plate, and the upper end of the closed side plate is sealed and fixedly connected to the lower side of the cooling pipes. The upper panel of the heat-conducting base plate, the inner side of the closed side plate, and the lower side of the cooling pipes form a vacuum cavity containing liquid cooling fluid. The cooling pipes are connected to the piping network of an external cooling tower or chiller.

[0005] Preferably, the vacuum chamber is further provided with a plurality of uniformly arranged water guides, and the water guides form a gas rising channel between them.

[0006] Preferably, the water guide body includes an upper water receiving plate, a side water guide frame, and a lower sealing plate. The upper end of the side water guide frame is fixedly connected to the upper water receiving plate, and the lower end of the side water guide frame is fixedly connected to the lower sealing plate. The surface of the upper water receiving plate is an arc spherical surface.

[0007] Preferably, the side guide frame is composed of a support frame and a capillary porous material, wherein the capillary porous material is adhered to the outer surface of the support frame.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a vacuum chamber, the boiling point of the liquid working medium in the chamber is reduced, making the liquid working medium easier to evaporate; by setting a cooling pipe, the gaseous working medium can be quickly condensed into liquid, thereby realizing recycling; by setting a water guide, the condensed liquid working medium can be uniformly and quickly returned to the bottom plate of the cold plate, realizing the cooling of the server. Attached Figure Description

[0009] Figure 1 This is a schematic diagram illustrating the structural principle of a server cold plate according to this utility model;

[0010] 10. Heat-conducting base plate; 20. Enclosed side plate; 30. Cooling pipe; 40. Vacuum chamber; 50. Water guide body; 51. Upper water receiving plate; 52. Side water guide frame; 53. Lower enclosed plate; 60. Gas rising channel. Detailed Implementation

[0011] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0012] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0014] like Figure 1 As shown, Figure 1 This is a schematic diagram illustrating the structural principle of a server cooling plate according to the present invention. A server cooling plate includes a heat-conducting base plate 10, a closed side plate 20, and a cooling pipe 30. The lower end of the closed side plate 20 is sealed and fixedly connected to the upper panel of the heat-conducting base plate 10, and the upper end of the closed side plate 20 is sealed and fixedly connected to the lower side of the cooling pipe 30. The upper panel of the heat-conducting base plate 10, the inner side of the closed side plate 20, and the lower side of the cooling pipe 30 form a vacuum chamber 40. The vacuum chamber 40 contains a liquid cooling medium, and the cooling pipe 30 is connected to the piping network of an external cooling tower or chiller.

[0015] This utility model discloses a server cooling plate used for heat dissipation and cooling of servers. The bottom of the cooling plate is in close contact with the server's heat dissipation surface, conducting heat from the server to the cooling plate. The liquid cooling medium inside the vacuum chamber of the cooling plate absorbs heat, changing from liquid to gas and rising to the cooling pipes. The chilled water in the cooling pipes absorbs heat, and the liquid cooling medium dissipates heat, condensing back into liquid and dripping to the bottom under its own gravity, thus completing the cycle. The liquid cooling medium can be water, ethanol, acetone, Freon, liquid ammonia, liquid nitrogen, liquid hydrogen, etc. The liquid cooling medium should have high latent heat of vaporization, thermal conductivity, suitable saturation pressure and boiling point, low viscosity, and good stability. Considering environmental friendliness and stability, water is preferred as the liquid cooling medium. In a vacuum environment, the boiling point of water decreases to approximately 60°C. The chilled water in the cooling pipes absorbs heat and rises in temperature before being transported to a cooling tower or chiller for cooling, removing the heat. The cooled chilled water is then transported back to the cooling pipes, completing the cycle.

[0016] To better facilitate the return of condensate to the bottom, preferably, the vacuum chamber 40 is further provided with a plurality of uniformly arranged water guides 50, and the water guides 50 form a gas rising channel 60.

[0017] By incorporating water guides within the vacuum chamber, when the liquid cooling medium condenses into liquid droplets on the cooling pipes, these droplets fall onto the water guides and flow to the bottom. The uniform placement of the water guides ensures a more even distribution of the condensed water droplets at the bottom, increasing the heat exchange efficiency of the cold plate. Simultaneously, the spaces between the water guides create gas rising channels, separating the gas rising channels from the liquid flowing channels, resulting in more efficient heat absorption and dissipation.

[0018] Regarding how the water guide body achieves water guiding, preferably, the water guide body 50 includes an upper water receiving plate 51, a side water guide frame 52, and a lower sealing plate 53. The upper end of the side water guide frame 52 is fixedly connected to the upper water receiving plate 51, and the lower end of the side water guide frame 52 is fixedly connected to the lower sealing plate 53. The surface of the upper water receiving plate 51 is an arc spherical surface.

[0019] The water guide body mainly guides water through the top water receiving plate and the side water guide frame. The condensate droplets on the cooling pipes fall onto the top water receiving plate. Because the surface of the top water receiving plate is an arc spherical surface, the condensate droplets fall onto the top water receiving plate and will flow from the high point of the arc spherical surface to the low point, and finally fall onto the side water guide frame, and then flow to the bottom through the side water guide frame. The lower sealing plate only prevents the gaseous liquid coolant from entering the large volume of the water guide body, thus preventing condensation and heat dissipation.

[0020] To improve the water guiding efficiency of the side water guide frame, preferably, the side water guide frame 52 is composed of a support frame and a capillary porous material, wherein the capillary porous material is adhered to the outer surface of the support frame.

[0021] By setting capillary porous material on the support frame, the adsorption force of water droplets is increased. The capillary porous material is a material with multiple capillary pores. The capillary pores have the adsorption force of water droplets, so that the water droplets on the upper water receiving plate can enter the capillary pores more comprehensively and faster, and thus flow to the bottom more quickly.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a vacuum chamber, the boiling point of the liquid working medium in the chamber is reduced, making the liquid working medium easier to evaporate; by setting a cooling pipe, the gaseous working medium can be quickly condensed into liquid, thereby realizing recycling; by setting a water guide, the condensed liquid working medium can be uniformly and quickly returned to the bottom plate of the cold plate, realizing the cooling of the server.

[0023] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0024] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A server cold plate characterized in that: comprising a heat-conducting bottom plate, a closed side plate, a cooling pipeline, the lower end of the closed side plate is sealingly and fixedly connected with the upper panel of the heat-conducting bottom plate, the upper end of the closed side plate is sealingly and fixedly connected with the lower side of the cooling pipeline, the upper panel of the heat-conducting bottom plate, the inner side of the closed side plate and the lower side of the cooling pipeline form a vacuum cavity, the vacuum cavity contains a liquid cooling working medium, and the cooling pipeline is in communication with the pipeline network of an external cooling tower or a water chiller.

2. The server cold plate according to claim 1, characterized in that: a plurality of uniformly arranged water guide bodies are further arranged in the vacuum cavity, and the water guide bodies form gas rising channels.

3. The server cold plate according to claim 2, characterized in that: the water guide body comprises an upper water receiving plate, a side water guide frame and a lower closed plate, the upper end of the side water guide frame is fixedly connected with the upper water receiving plate, the lower end of the side water guide frame is fixedly connected with the lower closed plate, and the panel surface of the upper water receiving plate is an arc spherical surface.

4. The server cold plate according to claim 3, characterized in that: the side water guide frame is composed of a support frame and a capillary porous material, and the capillary porous material is pasted to the outer surface of the support frame. ​ ​ ​ ​

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