Server two-phase liquid cooling heat dissipation system

Abstract

The utility model discloses a two-phase liquid cooling heat dissipation system for servers, and the system is characterized in that a plurality of two-phase liquid cooling subsystems are matched with multiple layers of servers in a cabinet in a one-to-one correspondence manner; each two-phase liquid cooling subsystem comprises a liquid cooling plate, a condenser, an air pipe and a liquid pipe, the liquid cooling plate is horizontally attached to the server, the position of the condenser is higher than that of the liquid cooling plate, and the air pipe and the liquid pipe are both gravity type heat pipes and are connected between the liquid cooling plate and the condenser to form a refrigerant self-driven circulation loop; the multi-cold-source heat exchanger is used for cooling the condensers of the two-phase liquid cooling subsystems. The heat dissipation device is efficient in heat dissipation, reliable, safe, simple in system, low in cost, easy to maintain and suitable for heat dissipation of high-density server cabinets.

Description

Technical Field

[0001] The utility model relates to the technical field of server heat dissipation design, in particular to a two-phase liquid cooling heat dissipation system for a server. Background Art

[0002] In today's information technology era, energy efficiency and heat dissipation in data centers have become key issues. With the continuous improvement of server performance and the growing computing demand, server density has also increased. Traditional air cooling systems face major challenges in dealing with the heat dissipation of high-density server cabinets, and the energy efficiency of air cooling systems is relatively low, which is not conducive to sustainable development. Compared with traditional air cooling, liquid cooling technology can provide higher heat conduction efficiency and remove heat from the server faster, especially the two-phase liquid cooling system, which further improves the heat dissipation performance by utilizing the latent heat of phase change during the evaporation and condensation process of the phase change working fluid, showing the potential to combat high temperature challenges. However, the existing two-phase liquid cooling technology still faces some design and implementation challenges when applied to high-density server cabinets, such as system complexity, high cost, difficult maintenance, and adaptability issues in specific environments. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a server two-phase liquid cooling system, which has high heat dissipation efficiency, is reliable and safe, has a simple system, is low in cost and is easy to maintain, and is suitable for high-density server cabinet heat dissipation.

[0004] A server two-phase liquid cooling system according to an embodiment of the utility model includes:

[0005] A plurality of two-phase liquid cooling subsystems, wherein the plurality of two-phase liquid cooling subsystems are matched one by one with the upper and lower layers of servers in the cabinet; each of the two-phase liquid cooling subsystems comprises a liquid cooling plate, a condenser, an air pipe and a liquid pipe, wherein the liquid cooling plate is horizontally attached to the server, the position of the condenser is higher than the position of the liquid cooling plate, the air pipe and the liquid pipe are both gravity heat pipes and are connected between the liquid cooling plate and the condenser to form a self-driven refrigerant circulation loop;

[0006] A multi-cold source heat exchanger is used to cool the condensers of the multiple two-phase liquid cooling subsystems.

[0007] According to the server two-phase liquid cooling and heat dissipation system of the embodiment of the utility model, in each two-phase liquid cooling subsystem, by placing the liquid cooling plate directly on the server of the corresponding layer to absorb and transfer heat, by utilizing the principle of gravity heat pipe, the liquid refrigerant boils and evaporates in the liquid cooling plate and becomes a gaseous refrigerant, the gaseous refrigerant spontaneously rises to the condenser, releases heat in the condenser and condenses into liquid refrigerant, and finally flows back to the liquid cooling plate under the action of gravity, completing the refrigeration cycle, and the heat of the condenser is taken away by the multi-cold source heat exchanger. The core of the server two-phase liquid cooling and heat dissipation system of the embodiment of the utility model lies in the non-powered pump drive mechanism, which directly places the liquid cooling plate on the server, such as the surface of the server CPU, and utilizes the principle of gravity heat pipe to achieve efficient heat transfer and heat dissipation. At the same time, through the design of graded condensers and multi-cold source heat exchangers, the heat exchange efficiency and energy utilization rate of the system are significantly improved.

[0008] The server two-phase liquid cooling and heat dissipation system of the embodiment of the utility model has the following advantages: (1) It can effectively reduce the operating temperature of the server and improve the overall energy efficiency of the data center; (2) The refrigerant circulation does not require an external pump drive, and the gas pipe and liquid pipe use gravity heat pipes to achieve self-driving of the refrigerant, which can reduce the system's own energy consumption, reduce environmental impact, and meet the requirements of sustainable development; (3) No water enters the computer room, which improves the safety and reliability of the server; (4) The system is simple, low-cost, reliable, safe and easy to maintain. In summary, the server two-phase liquid cooling and heat dissipation system of the embodiment of the utility model can meet the current high-standard requirements of high-density data centers for heat dissipation technology and is suitable for high-density server heat dissipation.

[0009] In some embodiments, for the servers in the same layer, the number of the liquid cooling plates of the two-phase liquid cooling subsystem matches the number of the servers in the corresponding layer, and the number of the condenser is one.

[0010] In some embodiments, the cabinet includes a cabinet body and a cabinet door, and multiple layers of the servers are arranged in the cabinet body with upper and lower intervals. Accordingly, multiple two-phase liquid cooling subsystems are distributed in upper and lower intervals and multiple condensers are arranged in the cabinet door with upper and lower intervals.

[0011] In some embodiments, the liquid cooling plate is attached to the CPU surface of the server.

[0012] In some embodiments, the multi-cold source heat exchanger is disposed on the cabinet door, and the multi-cold source heat exchanger is connected to a cold source.

[0013] In some embodiments, the cooling source is air cooling or liquid cooling.

[0014] In some embodiments, the multi-cold source heat exchanger is located on the outside of the cabinet door.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a schematic diagram of a two-phase liquid cooling system for a server according to an embodiment of the present invention.

[0018] Reference numerals:

[0019] Server two-phase liquid cooling heat dissipation system 1000; two-phase liquid cooling subsystem 1; liquid cooling plate 101; condenser 102; gas pipe 103; liquid pipe 104; multi-cold source heat exchanger 2; heat exchanger 201; cold source 202; cabinet 3; cabinet body 301; cabinet door 302; server 4. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] Combine the following Figure 1 The server two-phase liquid cooling and heat dissipation system 1000 according to an embodiment of the present invention is described.

[0022] like Figure 1 As shown, a server two-phase liquid cooling and heat dissipation system 1000 according to an embodiment of the utility model includes a plurality of two-phase liquid cooling subsystems 1 and a multi-cold source heat exchanger 2 .

[0023] Specifically, multiple two-phase liquid cooling subsystems 1 are matched one-to-one with the upper and lower layers of servers 4 in the cabinet 3, that is, all servers 4 on each layer in the cabinet 3 are correspondingly configured with a two-phase liquid cooling subsystem 1, so that multiple two-phase liquid cooling subsystems 1 are arranged in layers in the upper and lower directions.

[0024] Each two-phase liquid cooling subsystem 1 includes a liquid cooling plate 101, a condenser 102, an air pipe 103 and a liquid pipe 104. The liquid cooling plate 101 is horizontally attached to the server 4, that is, the liquid cooling plate 101 can be attached to the CPU surface of the server 4, the upper surface of the server 4 or the lower surface of the server 4. The attachment position of the server 4 can be selected according to the actual heat dissipation requirements. The liquid cooling plate 101 is an evaporator. The liquid refrigerant in the liquid cooling plate 101 absorbs the heat of the corresponding server 4 and then evaporates into a gaseous refrigerant, thereby realizing two-phase liquid cooling and efficient heat dissipation of the server 4, and can reliably ensure the safety of the server 4 without damaging the electronic components in the server 4. The function of the condenser 1022 is to make the gaseous refrigerant release heat and condense into liquid refrigerant. The position of the condenser 102 is higher than that of the liquid cooling plate 101, which is conducive to the liquid refrigerant at the condenser 102 to flow down by its own gravity. Both the gas pipe 103 and the liquid pipe 104 are gravity heat pipes and are connected between the liquid cooling plate 101 and the condenser 102 to form a self-driven circulation loop of the refrigerant. It can be understood that since the gas pipe 103 and the liquid pipe 104 are gravity heat pipes, there is no need for a power pump to drive the refrigerant, thereby realizing the gravity self-driven circulation of the refrigerant, effectively reducing the power consumption of the system itself, and according to the principle of gravity heat pipes, the refrigerant is transmitted through the gravity heat pipe circulation to ensure that the temperature of the server 4 is within a suitable working range.

[0025] When each two-phase liquid cooling subsystem 1 is working, the liquid refrigerant in the liquid cooling plate 101 absorbs the heat of the corresponding server 4 and evaporates into a gaseous refrigerant. The gaseous refrigerant at the liquid cooling plate 101 spontaneously enters the condenser 102 through the gas pipe 103. The condenser 102 causes the gaseous refrigerant to release heat and condense into liquid refrigerant. The liquid refrigerant at the condenser 102 enters the liquid cooling plate 101 through the liquid pipe 104 and uses its own gravity to complete a two-phase cycle.

[0026] The multi-cold source heat exchanger 2 is used to cool the condensers 102 of the multiple two-phase liquid cooling subsystems 1 , that is, the heat released by the gaseous refrigerant in the condenser 102 is taken away by the multi-cold source heat exchanger 2 .

[0027] According to the server two-phase liquid cooling and heat dissipation system 1000 of the embodiment of the utility model, in each two-phase liquid cooling subsystem 1, by placing the liquid cooling plate 101 directly on the server 4 of the corresponding layer to absorb and transfer heat, by utilizing the principle of gravity heat pipe, the liquid refrigerant boils and evaporates in the liquid cooling plate 101 and becomes a gaseous refrigerant, the gaseous refrigerant spontaneously rises to the condenser 102, releases heat and condenses into liquid refrigerant in the condenser 102, and finally flows back to the liquid cooling plate 101 under the action of gravity, completing the refrigeration cycle, and the heat of the condenser 102 is taken away by the multi-cold source heat exchanger 2. The core of the server two-phase liquid cooling and heat dissipation system 1000 of the embodiment of the utility model lies in the non-powered pump driving mechanism, directly placing the liquid cooling plate 101 on the server 4, such as on the CPU surface of the server 4, and utilizing the principle of gravity heat pipe to achieve efficient heat transfer and heat dissipation, and at the same time, through the design of the graded condenser 102 and the multi-cold source heat exchanger 2, the heat exchange efficiency and energy utilization rate of the system are significantly improved.

[0028] The server two-phase liquid cooling and heat dissipation system 1000 of the embodiment of the utility model has the following advantages: (1) It can effectively reduce the operating temperature of the server 4 and improve the overall energy efficiency of the data center; (2) The refrigerant circulation does not require an external pump drive, and the gas pipe 103 and the liquid pipe 104 use gravity heat pipes to achieve self-driving of the refrigerant, which can reduce the energy consumption of the system itself, reduce environmental impact, and meet the requirements of sustainable development; (3) No water enters the computer room, which improves the safety and reliability of the server 4; (4) The system is simple, low-cost, reliable, safe and easy to maintain. In summary, the server two-phase liquid cooling and heat dissipation system 1000 of the embodiment of the utility model can meet the high standard requirements of the current high-density data center for heat dissipation technology, and is suitable for heat dissipation of high-density servers 4.

[0029] In some embodiments, for the servers 4 on the same layer, the number of liquid cooling plates 101 of the two-phase liquid cooling subsystem 1 matches the number of servers 4 on the corresponding layer to ensure the heat dissipation effect of each server 4 on the same layer; there is one condenser 102. Therefore, the server two-phase liquid cooling heat dissipation system 1000 of this embodiment is simple, low-cost, high-safety, and good maintainability.

[0030] In some embodiments, the cabinet 3 includes a cabinet body 301 and a cabinet door 302, and multiple layers of servers 4 are arranged in the cabinet body 301 in upper and lower intervals. Accordingly, multiple two-phase liquid cooling subsystems 1 are distributed in upper and lower intervals, and multiple condensers 102 are arranged in upper and lower intervals in the cabinet door 302. The cabinet door 302 in this embodiment integrates the multi-stage condenser 102, replacing the original cabinet door, saving the floor space of the computer room. At the same time, the heat of the multi-stage condenser 102 is transmitted by the gravity heat pipe, and finally the heat is taken away by the multi-cold source heat exchanger 2, which significantly reduces energy consumption.

[0031] In some embodiments, the liquid cooling plate 101 is attached to the CPU surface of the server 4. In this way, the heat dissipation effect of the server 4 is better.

[0032] In some embodiments, a plurality of refrigerant flow channels are provided in the liquid cooling plate 101 to ensure uniform absorption of heat from the server 4 .

[0033] In some embodiments, the multi-cold source heat exchanger 2 is disposed on the cabinet door 302, and the multi-cold source heat exchanger 2 is connected to the cold source 201. In this way, the heat released by the gaseous refrigerant can be efficiently taken away through the cold source 201 and the multi-cold source heat exchanger 2.

[0034] In some embodiments, the cold source 201 is air-cooled and / or liquid-cooled, and the multi-cold source heat exchanger 2 can use air cooling or liquid cooling, or use air cooling and liquid cooling at the same time.

[0035] In some implementations, the multi-cold source heat exchanger 2 is located outside the cabinet door 302, and the position of the multi-cold source heat exchanger 2 is reasonably set.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A two-phase liquid cooling system for a server, characterized in that: include: A plurality of two-phase liquid cooling subsystems, wherein the plurality of two-phase liquid cooling subsystems are matched one by one with the upper and lower layers of servers in the cabinet; each of the two-phase liquid cooling subsystems comprises a liquid cooling plate, a condenser, an air pipe and a liquid pipe, wherein the liquid cooling plate is horizontally attached to the server, the position of the condenser is higher than the position of the liquid cooling plate, the air pipe and the liquid pipe are both gravity heat pipes and are connected between the liquid cooling plate and the condenser to form a self-driven refrigerant circulation loop; A multi-cold source heat exchanger is used to cool the condensers of the multiple two-phase liquid cooling subsystems.

2. The server two-phase liquid cooling system according to claim 1, characterized in that: For the servers at the same layer, the number of the liquid cooling plates of the two-phase liquid cooling subsystem matches the number of the servers at the corresponding layer, and there is one condenser.

3. The server two-phase liquid cooling system according to claim 2, characterized in that: The cabinet includes a cabinet body and a cabinet door. Multiple layers of servers are arranged in the cabinet body at upper and lower intervals. Accordingly, multiple two-phase liquid cooling subsystems are distributed in upper and lower intervals and multiple condensers are arranged in the cabinet door at upper and lower intervals.

4. The server two-phase liquid cooling and heat dissipation system according to claim 1, characterized in that: The liquid cooling plate is attached to the CPU surface of the server.

5. The server two-phase liquid cooling and heat dissipation system according to claim 3, characterized in that: The multi-cold source heat exchanger is arranged on the cabinet door, and the multi-cold source heat exchanger is connected to a cold source.

6. The server two-phase liquid cooling and heat dissipation system according to claim 5, characterized in that: The cooling source is air cooling and / or liquid cooling.

7. The server two-phase liquid cooling and heat dissipation system according to claim 5, characterized in that: The multi-cold source heat exchanger is located on the outside of the cabinet door.

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