Multi-stage liquid separation and gravity type heat pipe integrated server liquid cooling system

Abstract

The utility model discloses a multi-stage liquid separation and gravity type heat pipe integrated server liquid cooling system. Wherein a plurality of liquid cooling plates are provided, the plurality of liquid cooling plates are respectively, correspondingly and horizontally attached to a plurality of servers in the cabinet, and the horizontal heights of the plurality of liquid cooling plates are different; the number of the condenser is one, the arrangement position of the condenser is higher than that of the uppermost liquid cooling plate, and the air pipes and the liquid pipes are gravity type heat pipes and connected between the condenser and the multiple liquid cooling plates. The multi-stage liquid storage tank is arranged on the liquid pipe to form a multi-stage liquid separation system; and the plurality of liquid cooling plates, the air pipe, the condenser and the multi-stage liquid separation system form a refrigerant two-phase liquid cooling circulation system. The server heat dissipation system can efficiently and reliably carry out heat dissipation on the server with high heat dissipation density, ensures the safety of the server, and is low in power consumption at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of server heat dissipation design, and in particular to a server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe. Background Art

[0002] As server power consumption increases and computing power improves, heat dissipation requirements are also gradually increasing. Traditional air cooling can no longer meet the demand, so embedded cooling devices are gradually emerging. Liquid cooling, as an embedded cooling method, has obvious advantages. Currently, common server cooling solutions are water cooling, full immersion liquid cooling, water spray cooling, etc. However, water cooling introduces water into the server, which will pose a great potential threat to electronic components. Once a water leak occurs, it will cause serious damage to the server. In addition, the water cooling cycle requires a pump to provide transportation power. If the pump has a mechanical failure, the safety of the server cannot be guaranteed. At the same time, the power consumption of the pump cannot be ignored. 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 propose a server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe, which can efficiently and reliably dissipate heat for high heat dissipation density servers, ensure server safety, and at the same time reduce system power consumption.

[0004] According to the server liquid cooling system integrating multi-stage liquid separation and gravity heat pipes of the embodiment of the utility model, the system comprises a liquid cooling plate, a condenser, an air pipe, a liquid pipe and a multi-stage liquid storage tank; there are multiple liquid cooling plates, and the multiple liquid cooling plates are respectively and horizontally attached to multiple servers in a cabinet and the horizontal heights of the multiple liquid cooling plates are different; there is one condenser, and the arrangement position of the condenser is higher than the arrangement position of the uppermost liquid cooling plate, the air pipe and the liquid pipe are both gravity heat pipes and are connected between the condenser and the multiple liquid cooling plates; the multi-stage liquid storage tank is arranged on the liquid pipe to constitute a multi-stage liquid separation system; the multiple liquid cooling plates, the air pipe, the condenser and the multi-stage liquid separation system constitute a refrigerant two-phase liquid cooling circulation system.

[0005] Among them, the liquid refrigerant in the multiple liquid cooling plates absorbs the corresponding heat of the server and then 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 separated by the multi-stage liquid separation system and enters the multiple liquid cooling plates respectively by using its own gravity. The condenser is cooled by an external cold source.

[0006] The server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe in the embodiment of the utility model can efficiently dissipate heat for servers with high heat density, which not only reduces the potential threat to electronic components and the risk of mechanical failure of pumps in the prior art to the server, but also reduces the overall power consumption of the system, thereby reliably solving the heat dissipation demand 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 spaced apart from each other in correspondence with the plurality of liquid cooling plates, the inlet ends of the plurality of branch liquid pipes are higher than the respective outlet ends, the inlet ends of the plurality of branch liquid pipes are connected to the main liquid pipe, and the outlet ends of the plurality of branch liquid pipes are correspondingly connected to the liquid inlets of the plurality of liquid cooling plates;

[0008] Each liquid storage tank of the multi-stage liquid storage tank is correspondingly arranged at the connection 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 connection points between the inlet end of the remaining branch liquid pipes and the main liquid pipe is provided with a liquid storage tank.

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

[0011] In some embodiments, the liquid storage tank at the inlet end of the next-to-last branch liquid pipe is located at the lowest end of the main liquid pipe.

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

[0013] In some embodiments, the air pipe includes a main air pipe and multiple branch air pipes; the upper end of the main air pipe is connected to the condenser; the multiple branch air pipes are spaced apart up and down correspondingly to the multiple liquid cooling plates, the inlet end positions of the multiple branch air pipes are all lower than the respective outlet end positions, the inlet ends of the multiple branch air pipes are correspondingly connected to the air outlets of the multiple liquid cooling plates, and the outlet ends of the multiple branch air pipes are all connected to the main air pipe.

[0014] In some embodiments, the outlet end of the lowest branch airway is connected to the lowest end of the main airway.

[0015] In some embodiments, a plurality of the servers are arranged in a cabinet body of a cabinet, and the main gas pipe and the main liquid pipe are both arranged on a cabinet door of the cabinet.

[0016] 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

[0017] 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:

[0018] Figure 1 It is a schematic diagram of a server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe according to an embodiment of the present utility model.

[0019] Reference numerals:

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

[0021] 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.

[0022] Combine the following Figure 1 The server liquid cooling system 1000 integrating multi-stage liquid separation and gravity heat pipe according to an embodiment of the present invention is described.

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

[0024] Specifically, there are multiple liquid cooling plates 1, and the multiple liquid cooling plates 1 are horizontally attached to multiple servers 8 in the cabinet respectively and at different levels; that is, a liquid cooling plate 1 is horizontally attached to each server 7, and the liquid cooling plate 1 can be attached to the chip of the server 7, the upper surface of the server 7, or the lower surface of the server 7. The attachment position of the server 7 can be selected according to the actual heat dissipation requirements. The liquid cooling plate 1 is an evaporator, and the liquid refrigerant in the liquid cooling plate 1 absorbs the heat of the corresponding server 7 and evaporates into a gaseous refrigerant, thereby realizing the two-phase liquid cooling of the server 7 and efficiently dissipating heat, and can reliably ensure the safety of the server 7. The function of the condenser 2 is to condense the gaseous refrigerant into a liquid refrigerant. There is one condenser 2, and the arrangement position of the condenser 2 is higher than the arrangement position of the uppermost liquid cooling plate 1, which is conducive to the liquid refrigerant at the condenser 2 to flow down by its own gravity. Both the gas pipe 3 and the liquid pipe 4 are gravity heat pipes and are connected between a condenser 2 and multiple liquid cooling plates 1; since the gas pipe 3 and the liquid pipe 4 are gravity heat pipes, the gravity self-driven circulation of the refrigerant can be realized without the need for an external pump force, which effectively reduces the power consumption of the system itself, and according to the principle of gravity heat pipes, the refrigerant such as R134a, R22 and other fluorine-based refrigerants are transmitted through the gravity heat pipe circulation, which can ensure that the temperature of the server 7 is in a suitable working range. The multi-stage liquid storage tank is arranged on the liquid pipe 4 to form a multi-stage liquid separation system, which can ensure uniform liquid separation and achieve the best liquid filling rate of each liquid cooling plate 1, achieve the best heat exchange effect of the liquid cooling plate, and ensure that the temperature of the server 7 is in a suitable working range.

[0025] During operation, the liquid refrigerant in the multiple liquid cooling plates 1 absorbs the heat of the corresponding servers 7 and then vaporizes into gaseous refrigerant. Since the density of gaseous refrigerant is lower than that of liquid refrigerant, the gaseous refrigerant at the multiple liquid cooling plates 1 spontaneously passes through the gas pipe 3 from bottom to top and enters the condenser 2. The condenser 2 condenses the gaseous refrigerant into liquid refrigerant, that is, the gaseous refrigerant releases heat in the condenser 2 to form liquid refrigerant. The liquid refrigerant at the condenser 2 is evenly separated by a multi-stage liquid separation system and enters the multiple liquid cooling plates 1 respectively by using 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 a traditional air cooling method.

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

[0027] In some embodiments, the liquid pipe 4 includes a main liquid pipe 401 and multiple branch liquid pipes 402; the upper end of the main liquid pipe 401 is connected to the condenser 2; the multiple branch liquid pipes 402 are distributed in upper and lower intervals corresponding to the multiple liquid cooling plates 1, and the inlet ends of the multiple branch liquid pipes 402 are higher than the respective outlet ends. The inlet ends of the multiple branch liquid pipes 402 are connected to the main liquid pipe 401, and the outlet ends of the multiple branch liquid pipes 402 are correspondingly connected to the liquid inlets of the multiple liquid cooling plates 1; each liquid storage tank 5 of the multi-stage liquid storage tank is correspondingly arranged at the connection between the inlet end of the branch liquid pipe 402 and the main liquid pipe 401. It can be understood that a condenser 2 is connected to multiple liquid cooling plates 1 at different horizontal heights through a liquid pipe 4. Since the inlet ends of the multiple branch liquid pipes 402 are higher than their respective outlet ends, it can be ensured that the liquid refrigerant is driven into the corresponding liquid cooling plate 1 by its own gravity; and since each liquid storage tank 5 of the multi-stage liquid storage tank is correspondingly arranged 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 of the liquid cooling plate 1, and ensure that the liquid filling amount in each liquid cooling plate 1 and the liquid pipe 4 reaches the best effect, thereby ensuring efficient two-phase liquid cooling of the server 7.

[0028] In some embodiments, among the multiple branch liquid pipes 402, except for the lowest branch liquid pipe 402, a liquid storage tank 5 is provided at the connection between the inlet end of the remaining 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 amount in each liquid cooling plate 1 and the liquid pipe 4 reaches the best effect, thereby ensuring efficient two-phase liquid cooling of the server 7.

[0029] In some embodiments, a liquid storage tank 5 is provided at the connection between the inlet end of the plurality of 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 amount in each liquid cooling plate 1 and the liquid pipe 4 reaches the best effect, thereby ensuring efficient two-phase liquid cooling of the server 7.

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

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

[0032] In some embodiments, the air pipe 3 includes a main air pipe 301 and multiple branch air pipes 302; the upper end of the main air pipe 301 is connected to the condenser 2; the multiple branch air pipes 302 are spaced apart from each other in correspondence with the multiple liquid cooling plates 1, the inlet ends of the multiple branch air pipes 302 are all lower than the respective outlet ends, the inlet ends of the multiple branch air pipes 302 are correspondingly connected to the air outlets of the multiple liquid cooling plates 1, and the outlet ends of the multiple branch air pipes 302 are all connected to the main air pipe 301. Since the density of the gaseous refrigerant is lower than that of the liquid refrigerant, the gaseous refrigerant at the multiple liquid cooling plates 1 can spontaneously pass through the air pipe 3 from bottom to top and enter the condenser 2.

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

[0034] In some embodiments, multiple liquid cooling plates 1 are each provided with multiple refrigerant circulation channels to ensure uniform absorption of heat from the server 7 .

[0035] In some embodiments, a plurality of servers 7 are disposed in a cabinet body 801 of a cabinet 8 , and the main gas pipe 301 and the main liquid pipe 302 are both disposed on a cabinet door 802 of the cabinet 8 .

[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 server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe, characterized in that: It includes a liquid cooling plate, a condenser, an air pipe, a liquid pipe and a multi-stage liquid storage tank; there are multiple liquid cooling plates, and the multiple liquid cooling plates are respectively and horizontally attached to multiple servers in the cabinet and the horizontal heights of the multiple liquid cooling plates are different; there is one condenser, and the arrangement position of the condenser is higher than the arrangement position of the uppermost liquid cooling plate, the air pipe and the liquid pipe are both gravity heat pipes and are connected between the condenser and the multiple liquid cooling plates; the multi-stage liquid storage tank is arranged on the liquid pipe to form a multi-stage liquid separation system; the multiple liquid cooling plates, the air pipe, the condenser and the multi-stage liquid separation system constitute a refrigerant two-phase liquid cooling circulation system.

2. The server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe according to claim 1, characterized in that: 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 spaced apart from each other in correspondence with the plurality of liquid cooling plates, the inlet ends of the plurality of branch liquid pipes are higher than the respective outlet ends, the inlet ends of the plurality of branch liquid pipes are connected to the main liquid pipe, and the outlet ends of the plurality of branch liquid pipes are correspondingly connected to the liquid inlets of the plurality of liquid cooling plates; Each liquid storage tank of the multi-stage liquid storage tank is correspondingly arranged at the connection between the inlet end of the branch liquid pipe and the main liquid pipe.

3. The server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe according to claim 2, characterized in that: Among the plurality of branch liquid pipes, except for the last branch liquid pipe, each of the connection points between the inlet end of the remaining branch liquid pipes and the main liquid pipe is provided with a liquid storage tank.

4. The server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe according to claim 2, characterized in that: A liquid storage tank is provided at the connection between the inlet ends of the plurality of branch liquid pipes and the main liquid pipe.

5. The server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe according to claim 4, characterized in that: The liquid storage tank at the inlet end of the lowest branch liquid pipe is located at the lowermost end of the main liquid pipe.

6. The server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe according to claim 3, characterized in that: The main liquid pipe is also provided with a total liquid storage tank, and the total liquid storage tank is located between the uppermost liquid storage tank and the condenser.

7. The server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe according to claim 2, characterized in that: The air pipe includes a main air pipe and multiple branch air pipes; the upper end of the main air pipe is connected to the condenser; the multiple branch air pipes are spaced apart up and down correspondingly to the multiple liquid cooling plates, the inlet ends of the multiple branch air pipes are lower than the respective outlet ends, the inlet ends of the multiple branch air pipes are correspondingly connected to the air outlets of the multiple liquid cooling plates, and the outlet ends of the multiple branch air pipes are connected to the main air pipe.

8. The server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe according to claim 7, characterized in that: The outlet end of the lowest branch air pipe is connected to the lowest end of the main air pipe.

9. The server liquid cooling system integrating multi-stage liquid separation and gravity heat pipe according to claim 7, characterized in that: A plurality of the servers are arranged in a cabinet body of the cabinet, and the main gas pipe and the main liquid pipe are both arranged on the cabinet door of the cabinet.

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