Server liquid cooling system integrated with multi-stage separation and gravity type heat pipe

Abstract

The application discloses a kind of multi-stage liquid separation and gravity type heat pipe integrated server liquid cooling system;Among them, liquid cooling plate has multiple, multiple liquid cooling plate is equipped with multiple refrigerant flow channel, multiple liquid cooling plate upper and lower layer horizontal correspondingly pasted in the upper and lower layer arrangement multiple servers;The arrangement position of condenser is higher than the arrangement position of the uppermost liquid cooling plate;Gas pipe and liquid pipe are gravity type heat pipe and are connected between condenser and multiple liquid cooling plate;Multi-stage liquid storage tank is arranged on liquid pipe, and constitutes multi-stage liquid separation system;The application can efficiently and reliably cool high heat dissipation density server, ensure server safety, while system power consumption is small.

Description

Technical Field

[0001] This invention relates to the field of server heat dissipation design technology, specifically to a server liquid cooling system integrating multi-stage liquid distribution and gravity heat pipes. Background Technology

[0002] As server power consumption and computing power increase, the demand for heat dissipation also grows. Traditional air cooling is no longer sufficient, leading to the rise of embedded cooling devices. Liquid cooling, as an embedded cooling method, offers significant advantages. Currently, common server cooling solutions include water cooling, such as full immersion liquid cooling and water spray cooling. However, water cooling introduces water into the server, posing a significant potential threat to electronic components. Leaks can cause serious damage to the server. Furthermore, water cooling circulation requires pumps for power; if the pumps malfunction, server safety cannot be guaranteed, and the power consumption of the pumps cannot be ignored. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this invention is to propose a server liquid cooling system integrating multi-stage liquid distribution and gravity heat pipes, which can efficiently and reliably dissipate heat from high-density servers, ensuring server safety, while also having low system power consumption.

[0004] According to an embodiment of the present invention, a server liquid cooling system integrating multi-stage liquid distribution and gravity heat pipes includes liquid cooling plates, a condenser, gas pipes, liquid pipes, and a multi-stage liquid storage tank. Multiple liquid cooling plates are provided, each containing multiple refrigerant flow channels. The multiple liquid cooling plates are horizontally and correspondingly attached to multiple servers arranged in a vertically and horizontally layered manner. There is one condenser, positioned higher than the uppermost liquid cooling plate. Both the gas pipes and the liquid pipes are gravity heat pipes and are connected between the condenser and the multiple liquid cooling plates. The multi-stage liquid storage tank is disposed on the liquid pipes, forming a multi-stage liquid distribution system.

[0005] In this process, the liquid refrigerant in the multiple liquid cooling plates absorbs the heat from the corresponding server and evaporates into gaseous refrigerant. The gaseous refrigerant at the multiple liquid cooling plates enters the condenser through the gas pipe. The condenser condenses the gaseous refrigerant into liquid refrigerant. The liquid refrigerant at the condenser is evenly distributed by the multi-stage liquid distribution system and enters the multiple liquid cooling plates by its own gravity. The condenser is cooled by an external cold source.

[0006] The server liquid cooling system integrating multi-stage liquid distribution and gravity heat pipe in this invention can efficiently dissipate heat from servers with high heat density. This not only reduces the potential threat to electronic components and the risks to servers caused by pump mechanical failures in the prior art, but also reduces the overall power consumption of the system, thus reliably solving the heat dissipation problem of servers with high heat density.

[0007] In some embodiments, the liquid pipe includes a main liquid pipe and a plurality of branch liquid pipes; the upper end of the main liquid pipe is connected to the condenser; the plurality of branch liquid pipes are distributed vertically and vertically at intervals corresponding to the plurality of liquid cooling plates, the inlet end of each of the plurality of branch liquid pipes is higher than its respective outlet end, the inlet end of each of the plurality of branch liquid pipes is connected to the main liquid pipe, and the outlet end of each of the plurality of branch liquid pipes is correspondingly connected to the liquid inlet of the plurality of liquid cooling plates;

[0008] Each of the multi-stage liquid storage tanks is correspondingly located at the connection point between the inlet end of the branch liquid pipe and the main liquid pipe.

[0009] In some embodiments, among the plurality of branch liquid pipes, except for the last branch liquid pipe, each of the other branch liquid pipes is provided with a liquid storage tank at the connection between its inlet end and the main liquid pipe.

[0010] In some embodiments, a storage tank is provided at the connection point between the inlet end of each of the plurality of branch liquid pipes and the main liquid pipe.

[0011] In some embodiments, the storage tank at the inlet end of the next branch pipe is located at the bottom end of the main pipe.

[0012] In some embodiments, the main liquid pipe is further provided with a main liquid storage tank, which is located between the uppermost liquid storage tank and the condenser.

[0013] In some embodiments, the gas pipe includes a main gas pipe and a plurality of branch gas pipes; the upper end of the main gas pipe is connected to the condenser; the plurality of branch gas pipes are distributed vertically and vertically at intervals corresponding to the plurality of liquid cooling plates, the inlet end of each of the plurality of branch gas pipes is lower than its respective outlet end, the inlet end of each of the plurality of branch gas pipes is connected to the outlet of each of the plurality of liquid cooling plates, and the outlet end of each of the plurality of branch gas pipes is connected to the main gas pipe.

[0014] In some embodiments, the outlet end of the next least distant branch trachea is connected to the lowest end of the main trachea.

[0015] In some embodiments, multiple servers are installed inside a cabinet, and the main gas pipe and the main liquid pipe are both installed on the cabinet door.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of a server liquid cooling system integrating multi-stage liquid distribution and gravity heat pipes according to an embodiment of the present invention.

[0019] Figure label:

[0020] A server liquid cooling system 1000 integrating multi-stage liquid distribution and gravity heat pipe; liquid cooling plate 1; condenser 2; gas pipe 3; main gas pipe 301; branch gas pipe 302; liquid pipe 4; main liquid pipe 401; branch liquid pipe 402; liquid storage tank 5; main liquid storage tank 6; server 7; cabinet 8; cabinet body 801; cabinet door 802; cold source 9. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] The following is combined with Figure 1 This invention describes a server liquid cooling system 1000 integrating multi-stage liquid distribution and gravity heat pipes, according to an embodiment of the present invention.

[0023] The server liquid cooling system 1000 integrating multi-stage liquid distribution and gravity heat pipe according to an embodiment of the present invention is a two-phase liquid cooling system, including a liquid cooling plate 1, a condenser 2, a gas pipe 3, a liquid pipe 4, and a multi-stage liquid storage tank.

[0024] Specifically, there are multiple liquid cooling plates 1, each containing multiple refrigerant flow channels. These liquid cooling plates 1 are horizontally attached to multiple servers 7 arranged in a vertically layered manner. This means that a liquid cooling plate 1 is horizontally attached to each server 7. The liquid cooling plate 1 can be attached to the chips, the upper surface, or the lower surface of the server 7. The attachment position of the server 7 can be selected according to actual heat dissipation requirements. The liquid cooling plate 1 acts as an evaporator. The liquid refrigerant within the liquid cooling plate 1 absorbs heat from the corresponding server 7 and evaporates into gaseous refrigerant, thereby achieving efficient two-phase liquid cooling of the server 7 and reliably ensuring the safety of the server 7. Multiple refrigerant flow channels within the multiple liquid cooling plates 1 ensure uniform heat absorption from the server 7. The condenser 2 condenses the gaseous refrigerant into liquid refrigerant. There is one condenser 2, and its position is higher than the uppermost liquid cooling plate 1, which facilitates the downward flow of liquid refrigerant at the condenser 2 due to gravity. Both gas pipe 3 and liquid pipe 4 are gravity heat pipes and are connected between a condenser 2 and multiple liquid cooling plates 1. Because gas pipe 3 and liquid pipe 4 are gravity heat pipes, refrigerant can achieve gravity-driven self-circulation without the need for external pumping, effectively reducing the system's own power consumption. Furthermore, based on the principle of gravity heat pipes, the circulation of refrigerants such as R134a and R22 ensures that the temperature of server 7 remains within a suitable operating range. Multi-stage liquid storage tanks are installed on liquid pipe 4, forming a multi-stage liquid distribution system. This ensures uniform liquid distribution and achieves the optimal filling rate for each liquid cooling plate 1, maximizing the heat exchange effect of the liquid cooling plates and ensuring that the temperature of server 7 remains within a suitable operating range.

[0025] During operation, the liquid refrigerant in multiple liquid cooling plates 1 absorbs heat from the corresponding server 7 and vaporizes into gaseous refrigerant. Since the density of gaseous refrigerant is lower than that of liquid refrigerant, the gaseous refrigerant in multiple liquid cooling plates 1 spontaneously enters the condenser 2 from bottom to top through the gas pipe 3. The condenser 2 condenses the gaseous refrigerant into liquid refrigerant. That is, the gaseous refrigerant releases heat in the condenser 2 and forms liquid refrigerant. The liquid refrigerant in the condenser 2 is evenly distributed by a multi-stage liquid distribution system and enters multiple liquid cooling plates 1 by its own gravity, so that each liquid cooling plate 1 reaches the optimal liquid filling rate. The heat of the condenser 2 can be cooled by an external cold source 9, such as traditional air cooling.

[0026] Therefore, the server liquid cooling system 1000 integrating multi-stage liquid distribution and gravity heat pipe in this embodiment of the invention can efficiently dissipate heat from the high heat density server 7, which not only reduces the potential threat to electronic components and the risk to the server 7 caused by pump mechanical failure in the prior art, but also reduces the overall power consumption of the system, thereby reliably solving the heat dissipation problem of high heat density servers.

[0027] In some embodiments, the liquid pipe 4 includes a main liquid pipe 401 and a plurality of branch liquid pipes 402; the upper end of the main liquid pipe 401 is connected to the condenser 2; the plurality of branch liquid pipes 402 are distributed vertically and vertically in correspondence with the plurality of liquid cooling plates 1, the inlet end of the plurality of branch liquid pipes 402 is higher than the outlet end of each branch liquid pipe 402, the inlet end of the plurality of branch liquid pipes 402 is connected to the main liquid pipe 401, and the outlet end of the plurality of branch liquid pipes 402 is correspondingly connected to the liquid inlet of the plurality of liquid cooling plates 1; each of the multi-stage liquid storage tanks 5 is correspondingly arranged at the connection between the inlet end of the branch liquid pipe 402 and the main liquid pipe 401. It is understandable that by connecting a condenser 2 to multiple liquid cooling plates 1 at different horizontal heights through liquid pipes 4, and since the inlet positions of multiple branch liquid pipes 402 are all higher than their respective outlet positions, it can be ensured that the liquid refrigerant enters the corresponding liquid cooling plate 1 by gravity. Furthermore, since each liquid storage tank 5 of the multi-stage liquid storage tank is correspondingly set at the connection between the inlet end of the branch liquid pipe 402 and the main liquid pipe 401, each liquid storage tank 5 can store enough refrigerant, which can avoid the problem of uneven liquid distribution in the liquid cooling plate 1, and ensure that the liquid filling volume in each liquid cooling plate 1 and liquid pipe 4 reaches the optimal effect, thereby ensuring efficient two-phase liquid cooling heat dissipation of the server 7.

[0028] In some embodiments, among the multiple branch liquid pipes 402, except for the last branch liquid pipe 402, each branch liquid pipe 402 has a liquid storage tank 5 at the connection between its inlet end and the main liquid pipe 401. Each liquid storage tank 5 can store enough refrigerant, which can avoid the problem of uneven liquid distribution on the liquid cooling plate 1, and ensure that the liquid filling volume in each liquid cooling plate 1 and liquid pipe 4 reaches the optimal effect, thereby ensuring efficient two-phase liquid cooling heat dissipation of the server 7.

[0029] In some embodiments, a liquid storage tank 5 is provided at the connection point between the inlet end of the multiple branch liquid pipes 402 and the main liquid pipe 401. Each liquid storage tank 5 can store enough refrigerant, which can avoid the problem of uneven liquid distribution of the liquid cooling plate 1, and ensure that the liquid filling volume in each liquid cooling plate 1 and liquid pipe 4 reaches the optimal effect, thereby ensuring efficient two-phase liquid cooling heat dissipation of the server 7.

[0030] In some embodiments, the storage tank 5 at the inlet end of the last branch liquid pipe 402 is located at the bottom end of the main liquid pipe 401, and the location of the last storage tank 5 is reasonable.

[0031] In some embodiments, a main liquid pipe 401 is further provided with a total liquid storage tank 6, which is located between the uppermost liquid storage tank 5 and the condenser 2. By providing the total liquid storage tank 6, the total liquid storage tank 6 can store sufficient liquid refrigerant, further ensuring that the liquid filling volume in each liquid cooling plate 1 and liquid pipe 4 reaches the optimal effect, thereby further ensuring efficient two-phase liquid cooling heat dissipation of the server 7.

[0032] In some embodiments, the gas pipe 3 includes a main gas pipe 301 and multiple branch gas pipes 302; the upper end of the main gas pipe 301 is connected to the condenser 2; the multiple branch gas pipes 302 are distributed vertically and vertically corresponding to multiple liquid cooling plates 1, the inlet end of each branch gas pipe 302 is lower than its respective outlet end, the inlet end of each branch gas pipe 302 is connected to the outlet of each liquid cooling plate 1, and the outlet end of each branch gas pipe 302 is connected to the main gas pipe 301. Since the density of gaseous refrigerant is lower than that of liquid refrigerant, the gaseous refrigerant at each of the multiple liquid cooling plates 1 can spontaneously enter the condenser 2 from bottom to top through the gas pipe 3.

[0033] In some embodiments, the outlet end of the lowest branch pipe 302 is connected to the lowest end of the main pipe 301. In this way, the gaseous refrigerant coming out of the lowest liquid cooling plate 1 flows upward from the lowest end of the main pipe 301 after passing through the outlet end of the lowest branch pipe 302.

[0034] In some embodiments, multiple servers 7 are installed inside the cabinet 801 of the rack 8, and the main air pipe 301 and the main liquid pipe 302 are both installed on the cabinet door 802 of the rack 8.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A server liquid cooling system integrating multi-stage liquid distribution and gravity heat pipes, characterized in that, The system includes liquid cooling plates, a condenser, gas pipes, liquid pipes, and a multi-stage liquid storage tank. Multiple liquid cooling plates are present, each containing multiple refrigerant flow channels. These liquid cooling plates are horizontally and correspondingly mounted on multiple servers arranged in a vertically and horizontally layered manner. A single condenser is present, positioned higher than the topmost liquid cooling plate. Both the gas pipes and liquid pipes are gravity-type heat pipes and connect the condenser to the multiple liquid cooling plates. The multi-stage liquid storage tank is mounted on the liquid pipes, forming a multi-stage liquid distribution system. In this process, the liquid refrigerant in the multiple liquid cooling plates absorbs the heat from the corresponding server and evaporates into gaseous refrigerant. The gaseous refrigerant at the multiple liquid cooling plates enters the condenser through the gas pipe. The condenser condenses the gaseous refrigerant into liquid refrigerant. The liquid refrigerant at the condenser is evenly distributed by the multi-stage liquid distribution system and enters the multiple liquid cooling plates by its own gravity. The condenser is cooled by an external cold source. The liquid pipe includes a main liquid pipe and multiple branch liquid pipes; the upper end of the main liquid pipe is connected to the condenser; the multiple branch liquid pipes are distributed vertically and vertically at intervals corresponding to the multiple liquid cooling plates, the inlet end of each of the multiple branch liquid pipes is higher than its respective outlet end, the inlet end of each of the multiple branch liquid pipes is connected to the main liquid pipe, and the outlet end of each of the multiple branch liquid pipes is correspondingly connected to the liquid inlet of the multiple liquid cooling plates; Each of the multi-stage liquid storage tanks is correspondingly located at the connection point between the inlet end of the branch liquid pipe and the main liquid pipe. The main liquid pipe is also equipped with a main liquid storage tank, which is located between the uppermost liquid storage tank and the condenser.

2. The server liquid cooling system integrating multi-stage liquid distribution and gravity heat pipes according to claim 1, characterized in that, In the plurality of branch liquid pipes, except for the last branch liquid pipe, each of the other branch liquid pipes is provided with a liquid storage tank at the connection between its inlet end and the main liquid pipe.

3. The server liquid cooling system integrating multi-stage liquid distribution and gravity heat pipes according to claim 1, characterized in that, Each of the inlet ends of the multiple branch liquid pipes is provided with a liquid storage tank at the connection point between the inlet end and the main liquid pipe.

4. The server liquid cooling system integrating multi-stage liquid distribution and gravity heat pipes according to claim 3, characterized in that, The storage tank at the inlet end of the next branch liquid pipe is located at the bottom of the main liquid pipe.

5. The server liquid cooling system integrating multi-stage liquid distribution and gravity heat pipes according to claim 1, characterized in that, The gas pipe includes a main gas pipe and multiple branch gas pipes; the upper end of the main gas pipe is connected to the condenser; the multiple branch gas pipes are distributed vertically and vertically at intervals corresponding to the multiple liquid cooling plates, the inlet end of each of the multiple branch gas pipes is lower than its respective outlet end, the inlet end of each of the multiple branch gas pipes is connected to the outlet of each of the multiple liquid cooling plates, and the outlet end of each of the multiple branch gas pipes is connected to the main gas pipe.

6. The server liquid cooling system integrating multi-stage liquid distribution and gravity heat pipes according to claim 5, characterized in that, The outlet end of the next branch trachea is connected to the bottom end of the main trachea.

7. The server liquid cooling system integrating multi-stage liquid distribution and gravity heat pipes according to claim 5, characterized in that, Multiple servers are installed inside a server rack, and the main gas pipe and the main liquid pipe are both installed on the rack door.

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