CN-121008672-B - High-efficiency soaking type two-phase liquid cooling method for data center server

CN121008672BCN 121008672 BCN121008672 BCN 121008672BCN-121008672-B

Abstract

The invention discloses a high-efficiency soaking type two-phase liquid cooling method for a data center server, which is characterized in that a straightened rope or a long rod is arranged along the outer side surface of the server, and when the peripheral temperature of the server reaches a preset temperature, the rope or the long rod is driven to move back and forth along the direction vertical to the length direction of the server on the outer side surface of the server to drive bubbles on the surface of the server away. The invention can better clean the bubbles on the surface of the server to improve the heat exchange and cooling effects of the server, has the advantages of simple structure, automatic operation control, self-adaptive adjustment according to the heating value and the like, greatly improves the cooling efficiency of the server of the data center machine room, and ensures the equipment performance.

Inventors

GAO YAFENG
GAN SHIHAO
JIANG LINA
GUAN JINGXUAN
FAN ZHIXUAN

Assignees

重庆大学

Dates

Publication Date: 20260512
Application Date: 20250825

Claims (7)

1. A high-efficient soaking type two-phase liquid cooling method for a data center server is characterized in that the server is vertically arranged and soaked below the liquid level of two-phase cooling liquid contained in a cooling container, heat is emitted when the server works to drive the two-phase cooling liquid on the surface to gasify to realize heat exchange, and gasified two-phase cooling liquid gas rises to the top of the cooling container and is subjected to heat exchange by a cooling device to be liquefied again and drop back to the liquid level below, and the method is characterized in that a straightened rope or a long rod is arranged along the outer side surface of the server, and is driven to move back and forth along the direction vertical to the length direction of the outer side surface of the server to drive bubbles on the surface of the server to be removed after the peripheral temperature of the server reaches a preset temperature; the method is realized by means of a two-phase liquid cooling system of a server, the two-phase liquid cooling system of the server comprises a cooling container, two-phase cooling liquid is contained in the cooling container, a vertically arranged server is soaked in the two-phase cooling liquid, a cooling device is arranged at the top of the cooling container above the two-phase cooling liquid, and the method further comprises a bubble cleaning device arranged along the outer side surface of the server; The air bubble cleaning device comprises two air bag devices which are horizontally and oppositely arranged, wherein each air bag device is provided with a mounting part made of a hard heat conducting material, each mounting part is provided with a vertical sliding hole and can be vertically and slidably matched with sliding rods which are vertically arranged on the left side and the right side of the outer side of the server by means of the sliding holes, each air bag device is further provided with an air bag cavity which is filled with a phase change material, each air bag cavity is provided with a heat conducting side connected with the corresponding mounting part, each air bag cavity is further provided with an expansion side positioned on the outer surface of the corresponding air bag device, an air bag skin which is provided with an elastic material in a sealing mode is arranged on the corresponding expansion side, ropes or long rods which are positioned on the outer side of the server are fixedly connected between the mounting parts of the corresponding air bag devices, and the phase change temperature of the phase change material is within the range of 5 ℃ above and below the phase change temperature of the phase change cooling liquid.
2. The efficient immersion type two-phase liquid cooling method of a data center server according to claim 1, wherein the phase change material is consistent with the two-phase cooling liquid in the cooling container.
3. The high efficiency immersion two phase liquid cooling method of a data center server of claim 1, wherein a vertical heating surface is provided on the outside of the mounting portion and is disposed in contact with the outside surface of the server.
4. The efficient immersion type two-phase liquid cooling method of a data center server according to claim 1, wherein the upper end of the installation part is provided with a horizontally arranged cooling surface, and the top of the upper end of the inner cavity of the cooling container is provided with a downward heat transfer protrusion made of heat conducting materials corresponding to the cooling surface.
5. The efficient immersion type two-phase liquid cooling method of a data center server according to claim 1, wherein each of left and right sides of a lower end of each air bag device is horizontally extended outwards with a mounting protrusion, and each of the two mounting protrusions is provided with a sliding hole and is matched with a corresponding sliding rod.
6. The efficient immersion type two-phase liquid cooling method of a data center server according to claim 1, wherein a middle part of one side of the air bag device facing away from the server is provided with a limiting support arm protruding outwards horizontally, the limiting support arm is arranged in a hollow manner and forms the air bag cavity, and the air bag cover is arranged on the surfaces of the upper side and the lower side of the limiting support arm.
7. The efficient immersion two-phase liquid cooling method of a data center server according to claim 1, wherein an upper end of one side of the air bag device facing away from the server is provided with an upper support arm protruding horizontally outwards, and a cooled surface is formed on the upper end surface of the upper support arm; the cooling device comprises a cooling top plate which is horizontally arranged and a heat exchange coil which is buried in the cooling top plate, and the heat exchange coil is connected with a heat dissipation device which is positioned outside the machine room to form heat exchange circulation.

Description

High-efficiency soaking type two-phase liquid cooling method for data center server Technical Field The invention relates to the technical field of cooling of data center servers, in particular to a high-efficiency soaking type two-phase liquid cooling method of a data center server. Background How to improve the cooling and heat dissipation efficiency of a server is a long-sought goal of a data center for improving the calculation power and maintenance stability of the server. There are various cooling modes of the data center server, and among them, there is a soaking type two-phase cooling liquid cooling method with higher efficiency. The method is that the server is directly soaked in two-phase cooling liquid in a closed cooling container, heat is efficiently taken away by means of gasification of the cooling liquid after the server generates heat, the gasified cooling liquid rises to the position above the liquid level and then contacts with a cooling device at the top of the cooling container for heat exchange, the gasified cooling liquid is converted into liquid to drop back to the lower part again, and the cooling device is connected with a heat dissipation device outside a machine room to form a heat exchange circulation system and take the heat out of the machine room. Multiple servers can be vertically arranged in the cooling container to improve efficiency. The existing immersion type two-phase cooling liquid cooling method has the advantages of low energy consumption, no noise, high heat dissipation efficiency and the like. However, there is still a disadvantage in that bubbles generated after the cooling liquid is gasified often adhere to the outer surface during the heat exchange process of the server, and a layer of air film is easily formed by covering. Therefore, due to poor gas heat exchange efficiency, generated bubbles or gas films can isolate the contact between the server and the cooling liquid, so that the heat exchange efficiency between the server and the cooling liquid is greatly reduced, and the cooling efficiency of the server is reduced. Therefore, how to better solve the problem of bubble heat insulation and obtain a soaking type two-phase liquid cooling mode with better cooling effect becomes a problem to be further considered and solved by the person skilled in the art. Disclosure of Invention Aiming at the defects of the prior art, the technical problem to be solved by the invention is how to provide the high-efficiency soaking type two-phase liquid cooling method for the data center server, which can better solve the problem of bubble heat insulation and improve the cooling effect, so as to improve the overall heat dissipation performance of the server. In order to solve the technical problems, the invention adopts the following technical scheme: A high-efficient soaking type two-phase liquid cooling method for a data center server is characterized in that a straightened rope or a long rod is arranged along the outer side surface of the server, and after the peripheral temperature of the server reaches a preset temperature, the rope or the long rod is driven to move back and forth along the length direction perpendicular to the outer side surface of the server to drive bubbles on the surface of the server to drive the surface of the server to move back and forth along the length direction of the server to drive the bubbles to move away. Therefore, when the ambient temperature of the server reaches the preset temperature and bubbles are generated, the ropes or the long rods are horizontally arranged to move back and forth by means of driving, and the bubbles are removed. The air bubbles are prevented from adhering to the surface of the server, so that the heat exchange efficiency is reduced, and the cooling and heat dissipation effects of the server are improved. Further, the method is realized by means of a two-phase liquid cooling system of the server, the two-phase liquid cooling system of the server comprises a cooling container, two-phase cooling liquid is contained in the cooling container, a vertically arranged server is soaked in the two-phase cooling liquid, a cooling device is arranged at the top of the cooling container above the two-phase cooling liquid, and the method further comprises a bubble cleaning device arranged along the outer side surface of the server. As an option, the bubble cleaning device comprises guide rails which are arranged in parallel along two opposite sides of the outer side surface of the server, a remote control trolley is mounted on the guide rails, a rope or a long rod which is straightened along the outer side surface of the server is fixedly arranged between the two remote control trolleys, the bubble cleaning device further comprises a temperature sensor mounted on the outer side surface of the server, and the temperature sensor is connected with the remote control trolley and the same control center. Therefore, after the temperatur