CN116437639A

CN116437639A - Liquid cooling system, liquid cooling cabinet, control method, electronic equipment and storage medium

Info

Publication number: CN116437639A
Application number: CN202310434412.5A
Authority: CN
Inventors: 高鹏; 李金峰; 陈博华; 罗海亮; 刘洪�; 李海滨; 姜宇光; 孙立峰; 王学军; 程磊; 赵金铭; 田泽琦; 王运泽; 王媛媛
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Group Design Institute Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Group Design Institute Co Ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-07-14

Abstract

The application relates to the technical field of heat dissipation, and provides a liquid cooling system, a liquid cooling cabinet, a control method, electronic equipment and a storage medium. A wind-liquid heat exchanger, a first control valve and a liquid-cooling heat exchanger are sequentially connected in series on a first liquid-cooling branch in the liquid-cooling system; one end of second liquid cooling branch road is connected between first control valve and wind liquid heat exchanger, the other end of second liquid cooling branch road is connected at the liquid outlet end of liquid cooling heat exchanger, the second liquid cooling branch road has the second control valve, the one end of third liquid cooling branch road is connected at the inlet end of wind liquid heat exchanger, the other end of third liquid cooling branch road is connected between first control valve and liquid cooling heat exchanger, the third liquid cooling branch road has the third control valve, the liquid cooling system pipeline that this application provided is simple, liquid cooling heat exchanger and wind liquid heat exchanger share a set of liquid cooling system, and set up three control valve in the liquid cooling pipeline, can nimble adjustment coolant liquid is through the mode of liquid cooling heat exchanger and wind liquid heat exchanger, furthest energy saving.

Description

Liquid cooling system, liquid cooling cabinet, control method, electronic equipment and storage medium

Technical Field

The application relates to the technical field of heat dissipation, in particular to a liquid cooling system, a liquid cooling cabinet, a control method, electronic equipment and a storage medium.

Background

The liquid cooling technology is a technology of using liquid instead of air as a refrigerant to exchange heat with a heating component and take away heat. Because of the efficient cooling effect of liquid cooling technology, it is commonly used for heat dissipation of servers.

However, for the server, the cooling requirement cannot be met by adopting the liquid cooling technology alone: some devices in the server cannot use liquid cooling. In this case, therefore, conventional air-cooled air conditioning systems are still employed for such devices, with the heat being carried out of the server by the server fan.

Therefore, for the current cold machine room, two sets of refrigeration systems or pipelines are generally included, one set is responsible for cooling the heat dissipation of the liquid cooling part, and the other set is responsible for cooling the heat dissipation of the air cooling part. The heat dissipation system is very complex in pipeline connection, and is difficult to construct and maintain; and the air cooling radiating part also needs to be provided with an additional cold source, thereby increasing the energy consumption.

Disclosure of Invention

The embodiment of the application provides a liquid cooling system, a liquid cooling cabinet, a control method, electronic equipment and a storage medium, which are used for solving the technical problems of complex system pipeline connection and larger cold source energy consumption in the prior art.

In a first aspect, embodiments of the present application provide a liquid cooling system, including:

The first liquid cooling branch, the second liquid cooling branch and the third liquid cooling branch; the first liquid cooling branch is provided with a liquid inlet and a liquid outlet, and is sequentially connected with an air-liquid heat exchanger, a first control valve and a liquid cooling heat exchanger in series; the first control valve is used for controlling the on-off of the first liquid cooling branch; one end of the second liquid cooling branch is connected between the first control valve and the air-liquid heat exchanger, the other end of the second liquid cooling branch is connected with the liquid outlet end of the liquid cooling heat exchanger, the second liquid cooling branch is provided with a second control valve, and the second control valve is used for controlling the on-off of the second liquid cooling branch; one end of the third liquid cooling branch is connected with the liquid inlet end of the wind-liquid heat exchanger, the other end of the third liquid cooling branch is connected between the first control valve and the liquid cooling heat exchanger, the third liquid cooling branch is provided with a third control valve, and the third control valve is used for controlling the on-off of the third liquid cooling branch. In one embodiment, the liquid cooling system further comprises a liquid cooling circulation loop, wherein the cooling liquid in the liquid cooling circulation loop exchanges heat in the liquid cooling heat exchanger, and the liquid cooling circulation loop is provided with a first liquid pump and at least one cold plate.

In one embodiment, the liquid cooling system further comprises: the first temperature sensor is arranged at the inlet of the liquid cooling circulation loop and is used for detecting the temperature of cooling liquid at the inlet of the liquid cooling circulation loop; and/or a second temperature sensor, which is arranged at the outlet of the liquid cooling circulation loop of the outlet of the cold circulation loop and is used for detecting the temperature of the cooling liquid at the outlet of the liquid cooling circulation loop of the outlet of the cold circulation loop; the inlet of the liquid cooling circulation loop is the initial position of the liquid cooling circulation loop passing through the liquid cooling heat exchanger, and the outlet of the liquid cooling circulation loop is the final position of the liquid cooling circulation loop passing through the liquid cooling heat exchanger.

In one embodiment, the liquid cooling system further comprises: the third temperature sensor is arranged at the liquid inlet and used for detecting the temperature of the cooling liquid at the liquid inlet; and/or a fourth temperature sensor is arranged at the liquid outlet and used for detecting the temperature of the cooling liquid at the liquid outlet.

In one embodiment, the liquid cooling system further comprises: and the fifth temperature sensor is arranged on the wind-liquid heat exchanger and used for detecting the temperature of the wind-liquid heat exchanger.

In one embodiment, the liquid cooling system further comprises: the flow regulating valve is arranged at the liquid inlet and used for controlling the flow of the cooling liquid at the liquid inlet.

In one embodiment, the liquid cooling system further comprises: and one end of the first cooling branch is connected with the liquid inlet, the other end of the first cooling branch is connected with the liquid outlet, and the first cooling branch is connected with a first refrigeration module and a second liquid pump in series. In one embodiment, the liquid cooling system further comprises:

a fourth control valve is connected in series on the first cooling branch, and the fourth control valve is connected in series between the first refrigeration module and the second liquid pump; the liquid cooling system further comprises a second cooling branch, one end of the second cooling branch is connected between the liquid outlet end of the first refrigerating module and the fourth control valve, the other end of the second cooling branch is connected between the liquid inlet end of the second liquid pump and the fourth control valve, and the second cooling branch is connected with the second refrigerating module and the fifth control valve in series.

In one embodiment, the first refrigeration module is a closed cooling tower and the second refrigeration module is a chiller.

In one embodiment, the liquid cooling system further comprises: and the sixth temperature sensor is arranged at the outlet of the second liquid pump and used for detecting the actual water supply temperature.

In one embodiment, the liquid cooling system further comprises: and the outdoor temperature sensor is used for monitoring the outdoor dry bulb temperature and the outdoor wet bulb temperature.

In a second aspect, an embodiment of the present application provides a liquid cooling cabinet, including a cabinet body and the liquid cooling system described above.

In one embodiment, the liquid-cooled heat exchanger is arranged at the inner bottom side of the cabinet body, and the wind-liquid heat exchanger is arranged at the inner front side or the inner rear side of the cabinet body; the first liquid cooling branch circuit, the second liquid cooling branch circuit and the third liquid cooling branch circuit are arranged in the cabinet body.

In a third aspect, an embodiment of the present application provides a method for controlling a liquid cooling system, including: acquiring a first temperature and/or a second temperature; the first temperature is the temperature of the cooling liquid at the inlet of the liquid cooling circulation loop, and the second temperature is the temperature of the cooling liquid at the outlet of the liquid cooling circulation loop; wherein the liquid cooling circulation loop passes through the liquid cooling heat exchanger and at least one cold plate; controlling the liquid cooling system to be in a series mode under the condition that the first temperature is smaller than or equal to a first preset temperature or the second temperature is smaller than or equal to a second preset temperature; controlling the liquid cooling system to be in a parallel mode under the condition that the first temperature is greater than a first preset temperature or the second temperature is greater than a second preset temperature; when the liquid cooling system is in a series mode, cooling liquid in the liquid cooling system sequentially passes through the air-liquid heat exchanger and the liquid cooling heat exchanger through the first liquid cooling branch; when the liquid cooling system is in the parallel mode, the cooling liquid in the liquid cooling system passes through the air-liquid heat exchanger through the second liquid cooling branch circuit, and the cooling liquid in the liquid cooling system passes through the liquid cooling heat exchanger through the third liquid cooling branch circuit.

In one embodiment, controlling the liquid cooling system in a series mode includes: the first control valve is controlled to be opened, and the second control valve and the third control valve are controlled to be closed; controlling the liquid cooling system in a parallel mode, comprising: the first control valve is controlled to be closed, and the second control valve and the third control valve are controlled to be opened; the first control valve is arranged on the first liquid cooling branch, the second control valve is arranged on the second liquid cooling branch, and the third control valve is arranged on the third liquid cooling branch.

In one embodiment, controlling the liquid cooling system in the series mode when the first temperature is less than or equal to a first preset temperature or the second temperature is less than or equal to a second preset temperature includes: controlling the liquid cooling system to be in a series mode under the condition that the duration time of the first temperature which is smaller than or equal to the first preset temperature exceeds the first buffer time or the duration time of the second temperature which is smaller than or equal to the second preset temperature exceeds the first buffer time; when the first temperature is greater than a first preset temperature or the second temperature is greater than a second preset temperature, controlling the liquid cooling system to be in a parallel mode, including: and controlling the liquid cooling system to be in a parallel mode under the condition that the duration time when the first temperature is greater than the first preset temperature exceeds the second buffer time or the duration time when the second temperature is greater than the second preset temperature exceeds the second buffer time.

In one embodiment, the control method of the liquid cooling system further includes: under the condition that a refrigerating module of the liquid cooling system does not meet the preset refrigerating requirement, controlling the liquid cooling system to be in an emergency mode; when the liquid cooling system is in an emergency mode, the first control valve and the second control valve are closed, the third control valve is opened, and cooling liquid in the liquid cooling system passes through the liquid cooling heat exchanger through the third liquid cooling branch.

In one embodiment, the control method of the liquid cooling system further includes: and controlling the opening degree of the flow regulating valve of the liquid inlet to regulate the flow of the entering cooling liquid.

In one embodiment, after the first temperature and/or the second temperature are obtained, the method further comprises: acquiring a detection temperature; controlling the flow rate of the cooling liquid at the liquid inlet according to at least one of the detected temperature, the first temperature and the second temperature; the detection temperature is at least one of a third temperature, a fourth temperature and a fifth temperature, wherein the third temperature is the cooling liquid temperature of the liquid inlet, the fourth temperature is the cooling liquid temperature of the liquid outlet, and the fifth temperature is the temperature of the wind-liquid heat exchanger.

In one embodiment, controlling the coolant flow of the liquid inlet according to at least one of the detected temperature, the first temperature, and the second temperature includes: when the first temperature is smaller than or equal to the third preset temperature or the second temperature is smaller than or equal to the fourth preset temperature, the opening degree of the flow regulating valve of the liquid inlet is reduced, so that the flow of the entering cooling liquid is reduced; when the first temperature is higher than the third preset temperature or the second temperature is higher than the fourth preset temperature, the opening degree of the flow regulating valve of the liquid inlet is regulated to ensure that the flow of the entering cooling liquid is increased.

In one embodiment, the control method of the liquid cooling system further includes: obtaining a sixth temperature of the cooling liquid in a liquid pump water outlet, wherein the liquid pump provides power for the first liquid cooling branch, the second liquid cooling branch and the third liquid cooling branch; when the sixth temperature is less than or equal to the fifth preset temperature, the first refrigeration module is controlled to work, and the second refrigeration module does not work; and when the sixth temperature is higher than the fifth preset temperature, controlling the first refrigeration module and the second refrigeration module to work.

In one embodiment, the first refrigeration module is a closed cooling tower, and the second refrigeration module is a chiller; the control method of the liquid cooling system further comprises the following steps: obtaining a sixth temperature of the cooling liquid in a liquid pump water outlet, wherein the liquid pump provides power for the first liquid cooling branch, the second liquid cooling branch and the third liquid cooling branch; when the sixth temperature is less than or equal to the fifth preset temperature, controlling a fan module of the closed cooling tower to work, wherein a spraying module of the closed cooling tower and a water chilling unit do not work; when the duration time of the sixth temperature which is larger than the fifth preset temperature does not exceed the third buffer time, controlling a fan module and a spraying module of the closed cooling tower to work, and enabling the water chilling unit not to work; and when the duration time of the sixth temperature which is larger than the fifth preset temperature exceeds the third buffer time, controlling the fan module, the spraying module and the water chilling unit of the closed cooling tower to work.

In one embodiment, the control method of the liquid cooling system further includes: acquiring an outdoor dry bulb temperature, an outdoor wet bulb temperature and a sixth temperature of cooling liquid in a water outlet of a liquid pump, wherein the liquid pump provides power for a first liquid cooling branch, a second liquid cooling branch and a third liquid cooling branch; and controlling the working conditions of the first refrigeration module and the second refrigeration module according to the outdoor dry bulb temperature, the outdoor wet bulb temperature and the sixth temperature.

In one embodiment, the first refrigeration module is a closed cooling tower, and the second refrigeration module is a chiller; according to outdoor dry bulb temperature, outdoor wet bulb temperature and sixth temperature, the operating condition of control first refrigeration module and second refrigeration module includes:

when the sum of the outdoor dry bulb temperature and the dry bulb heat exchange temperature difference is smaller than or equal to a fifth preset temperature and the sixth temperature is smaller than or equal to the fifth preset temperature, controlling the fan module of the closed cooling tower to work, wherein the spray module of the closed cooling tower and the water chilling unit do not work.

When the sum of the outdoor dry bulb temperature and the dry bulb heat exchange temperature difference is smaller than or equal to a fifth preset temperature, the sixth temperature is larger than the fifth preset temperature, and the outdoor dry bulb temperature is larger than zero, the fan module and the spray module of the closed cooling tower are controlled to work, and the water chilling unit does not work.

In one embodiment, when the sum of the outdoor dry bulb temperature and the dry bulb heat exchange temperature difference is less than or equal to a fifth preset temperature, the sixth temperature is greater than the fifth preset temperature, and the outdoor dry bulb temperature is greater than zero degrees, the fan module and the spray module of the closed cooling tower are controlled to work, and after the water chilling unit does not work, the method further comprises:

and when the duration time of the sixth temperature which is larger than the fifth preset temperature exceeds the third buffer time, controlling the fan module, the spraying module and the water chilling unit of the closed cooling tower to work.

In one embodiment, the first refrigeration module is a closed cooling tower, and the second refrigeration module is a chiller; according to outdoor dry bulb temperature, outdoor wet bulb temperature and sixth temperature, the operating condition of control first refrigeration module and second refrigeration module includes: when the sum of the outdoor dry bulb temperature and the dry bulb heat exchange temperature difference is larger than a fifth preset temperature, the sum of the outdoor wet bulb temperature and the wet bulb heat exchange temperature difference is smaller than or equal to the preset temperature, and the sixth temperature is smaller than or equal to the fifth preset temperature, the fan module and the spray module of the closed cooling tower are controlled to work, and the water chilling unit does not work.

In one embodiment, the first refrigeration module is a closed cooling tower, and the second refrigeration module is a chiller; according to outdoor dry bulb temperature, outdoor wet bulb temperature and sixth temperature, the operating condition of control first refrigeration module and second refrigeration module includes: when the sum of the outdoor dry bulb temperature and the dry bulb heat exchange temperature difference is larger than a fifth preset temperature, the sum of the outdoor wet bulb temperature and the wet bulb heat exchange temperature difference is smaller than or equal to the preset temperature, and the sixth temperature is larger than the fifth preset temperature, the fan module, the spraying module and the water chilling unit of the closed cooling tower are controlled to work.

In one embodiment, the first refrigeration module is a closed cooling tower, and the second refrigeration module is a chiller; according to outdoor dry bulb temperature, outdoor wet bulb temperature and sixth temperature, the operating condition of control first refrigeration module and second refrigeration module includes: when the sum of the outdoor dry bulb temperature and the dry bulb heat exchange temperature difference is larger than a fifth preset temperature, and the sum of the outdoor wet bulb temperature and the wet bulb heat exchange temperature difference is larger than the preset temperature, controlling a fan module, a spraying module and a water chilling unit of the closed cooling tower to work.

In a fourth aspect, an embodiment of the present application provides an electronic device, including a processor and a memory storing a computer program, where the processor implements the steps of the method for controlling the liquid cooling system according to the second aspect when executing the program.

In a fifth aspect, embodiments of the present application provide a non-transitory computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of the method for controlling a liquid cooling system according to the second aspect.

The liquid cooling system, the liquid cooling cabinet, the control method, the electronic equipment and the storage medium provided by the embodiment of the application, wherein the first liquid cooling branch is provided with a first control valve; the second liquid cooling branch is provided with a second control valve; the third liquid cooling branch is provided with a third control valve; the first liquid cooling branch passes through the liquid cooling heat exchanger and the wind-liquid heat exchanger, the second liquid cooling branch passes through the wind-liquid heat exchanger, and the third liquid cooling branch passes through the liquid cooling heat exchanger. Through the mode, the liquid cooling system is simple in pipeline, the first liquid cooling branch circuit, the second liquid cooling branch circuit and the third liquid cooling branch circuit share the liquid inlet and the liquid outlet, the liquid cooling heat exchanger and the wind liquid heat exchanger share one set of liquid cooling system, and the wind liquid heat exchanger can also take away self heat through the liquid cooling pipeline; and three control valves are arranged in the liquid cooling pipeline, and the mode that the cooling liquid passes through the liquid cooling heat exchanger and the air-liquid heat exchanger can be flexibly adjusted through the three control valves, so that the heat dissipation advantage of the liquid cooling system is fully exerted, and the energy is saved to the greatest extent.

Drawings

For a clearer description of the present application or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a liquid cooling system according to an embodiment of the present disclosure;

fig. 2 (a) is a schematic structural diagram of a liquid cooling pipeline connection mode in a liquid cooling system according to an embodiment of the present application, where the liquid cooling pipeline is in a serial mode;

fig. 2 (b) is a schematic structural diagram of a liquid cooling pipeline connection mode in the liquid cooling system according to the embodiment of the present application, where the liquid cooling pipeline is in a parallel mode;

fig. 2 (c) is a schematic structural diagram of a liquid cooling pipeline connection mode in the liquid cooling system according to the embodiment of the present application, where the liquid cooling pipeline is in an emergency mode;

FIG. 3 is a second schematic diagram of a liquid cooling system according to an embodiment of the present disclosure;

FIG. 4 is a control method of a liquid cooling system according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a pipeline on one side of an interior of a cabinet according to an embodiment of the present disclosure;

Fig. 6 is a schematic structural diagram of a secondary side pipeline according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a primary side pipeline outside a cabinet according to an embodiment of the present disclosure;

fig. 8 is a schematic diagram of an entity structure of an electronic device according to an embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a liquid cooling system according to an embodiment of the present application. In this embodiment, the liquid cooling system may include a first liquid cooling branch, a second liquid cooling branch, and a third liquid cooling branch.

The first liquid cooling branch is provided with a liquid inlet and a liquid outlet, and is sequentially connected with an air-liquid heat exchanger 110, a first control valve C1 and a liquid cooling heat exchanger 120 in series; the first control valve C1 is used for controlling the on-off of the first liquid cooling branch.

One end of the second liquid cooling branch is connected between the first control valve C1 and the air-liquid heat exchanger 110, the other end of the second liquid cooling branch is connected to the liquid outlet end of the liquid cooling heat exchanger 120, the second liquid cooling branch is provided with a second control valve C2, and the second control valve C2 is used for controlling on-off of the second liquid cooling branch.

One end of the third liquid cooling branch is connected to the liquid inlet end of the wind-liquid heat exchanger 110, the other end of the third liquid cooling branch is connected between the first control valve C1 and the liquid cooling heat exchanger 120, the third liquid cooling branch is provided with a third control valve C3, and the third control valve C3 is used for controlling on-off of the third liquid cooling branch.

The first liquid cooling branch passes through the liquid cooling heat exchanger 120 and the air-liquid heat exchanger 110, the second liquid cooling branch passes through the air-liquid heat exchanger 110, and the third liquid cooling branch passes through the liquid cooling heat exchanger 120. The second liquid cooling branch does not pass through the liquid cooling heat exchanger 120, and the third liquid cooling branch does not pass through the wind-liquid heat exchanger 110.

In this embodiment, the first liquid cooling branch, the second liquid cooling branch and the third liquid cooling branch share a liquid inlet and a liquid outlet, the liquid cooling heat exchanger 120 and the wind liquid heat exchanger 110 share a set of liquid cooling system, and the pipeline design of the liquid cooling system is simple, so that the installation, the operation and the maintenance are convenient.

Alternatively, the control valve may be an electrically operated valve that can be controlled by an electric actuator to effect opening and closing of the valve.

A heat exchanger is a device that transfers heat from a fluid having a higher temperature to a fluid having a lower temperature, also known as a heat exchanger. The liquid-cooled heat exchanger 120 is used for storing heat absorbed from the device to be cooled by the liquid cooling technology, and the wind-liquid heat exchanger 110 is used for storing heat absorbed from the device to be cooled by the air cooling technology.

The air cooling technology uses air as medium to cool the object to be cooled. The surface area of the object to be cooled is usually increased, or the air flow rate through the object per unit time is increased, and in this embodiment, a fan (blower) is used to enhance ventilation and cooling. In some embodiments, a heat sink may be added to provide a significant increase in cooling efficiency.

Alternatively, the heat in the device to be cooled is brought into the liquid-air heat exchanger by means of air by means of a fan.

Liquid cooling techniques may include immersion and cold plate techniques. The immersion liquid cooling technology enables the device to be in direct contact with liquid through immersing the heating device, so as to conduct heat exchange. The cold plate type liquid cooling technology uses working fluid as medium for transferring heat, and the heat is transferred from the hot zone to the far end for cooling. In this technique, the working fluid is separated from the object to be cooled, and the working fluid is not in direct contact with the electronic device, but transfers heat of the object to be cooled to the cooling fluid through a high-efficiency heat conduction member such as a cold plate, so that the cold plate liquid cooling technique is also called an indirect liquid cooling technique.

Alternatively, the heat in the device to be cooled is brought into the liquid-cooled heat exchanger by the cold plate and the working liquid.

In this embodiment, the manner in which the cooling liquid passes through the liquid-cooled heat exchanger and the air-liquid heat exchanger can be flexibly adjusted by three control valves. Specifically, the control modes of the three control valves can be divided into three types, and the liquid cooling pipeline connection modes can be also divided into three types. Referring to fig. 2 (a) to 2 (c), fig. 2 (a) to 2 (c) are schematic structural diagrams of a liquid cooling pipeline connection mode in the liquid cooling system provided in the embodiment of the application.

(1) Serial mode: the first control valve C1 is opened, and the second control valve C2 and the third control valve C3 are closed.

As shown in fig. 2 (a), the liquid cooling line is in a series mode. The first liquid cooling branch is conducted, the second liquid cooling branch is not conducted with the second liquid cooling branch, the cooling liquid entering from the liquid inlet enters the first liquid cooling branch, and the first liquid cooling branch sequentially passes through the air-liquid heat exchanger 110 and the liquid cooling heat exchanger 120 to take away heat in the liquid cooling heat exchanger and heat in the air-liquid heat exchanger, and the liquid cooling heat exchanger and the air-liquid heat exchanger can be regarded as series heat dissipation.

In the series mode, the cooling liquid firstly absorbs the heat of the wind-liquid heat exchanger 110, passes through the liquid-cooling heat exchanger 120 after a certain temperature rise, and then absorbs the heat of the liquid-cooling heat exchanger 120, and flows out from the outside through the liquid outlet for heat dissipation after further temperature rise. The series mode can fully utilize the energy of the cold source by reasonably setting the temperature gradient, thereby greatly saving the energy consumption.

(2) Parallel mode: the second control valve C2 and the third control valve C3 are opened, and the first control valve C1 is closed.

As shown in fig. 2 (b), the liquid-cooled pipeline is in parallel mode. The second liquid cooling branch circuit is conducted with the third liquid cooling branch circuit, the first liquid cooling branch circuit is not conducted, the cooling liquid entering from the liquid inlet respectively enters into the second liquid cooling branch circuit and the third liquid cooling branch circuit, the second liquid cooling branch circuit passes through the wind-liquid heat exchanger 110 to take away heat in the wind-liquid heat exchanger, and the third liquid cooling branch circuit passes through the liquid cooling heat exchanger 120 to take away heat in the liquid cooling heat exchanger. The liquid-cooled heat exchanger 120 and the wind-liquid heat exchanger 110 may be considered as parallel heat rejection.

In the parallel mode, the cooling liquid is divided into two paths for respectively absorbing heat of the wind-liquid heat exchanger 110 and the liquid-cooling heat exchanger 120, and the two paths of cooling liquid are heated to different degrees, and then are collected until one path of cooling liquid flows out from the liquid outlet. Compared with a series mode, the parallel mode can provide cooling liquid with lower temperature for the liquid cooling heat exchanger, and the heat exchange effect of the liquid cooling heat exchanger is ensured.

(3) Emergency mode: the third control valve C3 is opened, and the first control valve C1 and the second control valve C2 are closed.

The liquid cooling line is in emergency mode as shown in fig. 2 (c). The third liquid cooling branch is conducted, the second liquid cooling branch is not conducted with the third liquid cooling branch, the cooling liquid entering from the liquid inlet enters the third liquid cooling branch, and the third liquid cooling branch passes through the liquid cooling heat exchanger 120 to take away heat in the liquid cooling heat exchanger 120.

In the emergency mode, the cooling liquid exchanges heat with the liquid cooling heat exchanger only through the third liquid cooling branch. The emergency mode is used for guaranteeing refrigeration in emergency, and is started under the condition that a refrigeration module of the liquid cooling system does not meet preset refrigeration requirements, so that heat dissipation of the liquid cooling heat exchanger can be guaranteed preferentially.

Above, through opening and closing of three control valves, can realize the multiple connected mode of liquid cooling pipeline: the utilization efficiency of cold energy can be improved in the serial mode, the heat exchange effect of the liquid cooling heat exchanger can be ensured in the parallel mode, and the heat dissipation of main devices can be preferentially ensured in the emergency mode; the liquid cooling system can flexibly select different modes, so that the utilization efficiency of cold energy can be improved, and the heat dissipation effect is also ensured.

In summary, the liquid cooling system provided by the embodiment has simple pipeline design, the liquid cooling heat exchanger and the air-liquid heat exchanger share one set of liquid cooling system for heat exchange, and the air-liquid heat exchanger can also take away self heat through a liquid cooling pipeline; and the mode that the cooling liquid passes through the liquid cooling heat exchanger and the air-liquid heat exchanger can be flexibly adjusted through three control valves, so that the heat dissipation advantage of the liquid cooling system is fully exerted, and the energy is saved to the greatest extent.

In one embodiment, the liquid cooling system further comprises a liquid cooling circulation loop, wherein the cooling liquid in the liquid cooling circulation loop exchanges heat in the liquid cooling heat exchanger, and the liquid cooling circulation loop is provided with a first liquid pump and at least one cold plate. Alternatively, when the liquid cooling circulation loop has one cold plate, the first liquid pump and the liquid cooling are connected in series in the liquid cooling circulation loop. When the cold circulation loop has at least two cold plates, the at least two cold plates can be regarded as forming a cold plate module, the cold plate module and the first liquid pump are connected in series in the liquid cooling circulation loop, and the at least two cold plates can be connected in series or in parallel in the cold plate module.

Referring to fig. 3, fig. 3 is a second schematic structural diagram of a liquid cooling system according to an embodiment of the present application. The cold plate 130 may be disposed in the device to be cooled, the cold plate 130 may absorb heat of the device to be cooled, and the absorbed heat in the cold plate 130 may be transferred to the liquid-cooled heat exchanger 120 through a liquid-cooled circulation loop (shown in fig. 3 by a dotted line). The first liquid pump W1 is used for providing power for the flow of the cooling liquid in the liquid cooling circulation loop.

The liquid cooling circulation loop and the three liquid cooling branches are mutually independent. The cooling liquid in the liquid cooling circulation loop only flows in the liquid cooling circulation loop and does not enter the first liquid cooling branch, the second liquid cooling branch and the third liquid cooling branch. Similarly, the cooling liquid in the first liquid cooling branch, the second liquid cooling branch and the third liquid cooling branch does not enter the liquid cooling circulation loop.

The liquid cooling circulation loop can improve the heat dissipation area of the liquid cooling circulation loop.

In one embodiment, the liquid cooling system further comprises a flow regulating valve.

The flow regulating valve is arranged at the liquid inlet and used for controlling the flow of the cooling liquid at the liquid inlet.

Specifically, the opening degree of the flow regulating valve is controlled to reasonably distribute the flow of the cooling liquid flowing into the liquid inlet. When the opening of the flow regulating valve is regulated to be high, the flow of the cooling liquid flowing into the liquid inlet is increased; when the opening degree of the flow regulating valve is reduced, the flow rate of the cooling liquid flowing into the liquid inlet is reduced.

In one embodiment, the liquid cooling system further comprises a first cooling branch, one end of the first cooling branch is connected with the liquid inlet, the other end of the first cooling branch is connected with the liquid outlet, and the first cooling branch is connected with the first refrigerating module and the second liquid pump in series.

As shown in fig. 3, the cooling liquid in the liquid cooling branch circuit takes away the heat of the liquid cooling heat exchanger 120 and the air-liquid heat exchanger 110, so that the temperature of the cooling liquid at the liquid outlet is higher than the temperature at the liquid inlet, and in order to enable the liquid cooling system to dissipate heat circularly, the cooling liquid after being heated needs to be cooled by the first cooling branch circuit.

The first refrigeration module 140 is configured to cool the passing cooling liquid. The second liquid pump W2 is used to power the flow of the cooling liquid in the first cooling branch.

It should be noted that, the first cooling branch and the three liquid cooling branches are communicated through the liquid inlets and the liquid outlets, so that the cooling liquid in the first cooling branch can flow in the three liquid cooling branches.

In one embodiment, the liquid cooling system further comprises: a fourth control valve is connected in series on the first cooling branch, and the fourth control valve is connected in series between the first refrigeration module and the second liquid pump; the liquid cooling system further comprises a second cooling branch, one end of the second cooling branch is connected between the liquid outlet end of the first refrigerating module and the fourth control valve, the other end of the second cooling branch is connected between the liquid inlet end of the second liquid pump and the fourth control valve, and the second cooling branch is connected with the second refrigerating module and the fifth control valve in series.

With continued reference to fig. 3, in order to ensure the heat dissipation effect of the liquid cooling system, the liquid cooling system may further include a second cooling module 150, where the second cooling module 150 is configured to cool the passing cooling liquid, so as to further reduce the temperature of the cooling liquid at the liquid inlet. In addition, in order to save energy, a fourth control valve C4 and a fifth control valve C5 are additionally provided to control the operation conditions of the first and

second refrigeration modules

140 and 150.

In this embodiment, when the refrigerating effect of the first refrigerating module 140 can meet the preset refrigerating requirement of the liquid cooling system, the fourth control valve C4 is opened, the fifth control valve C5 is closed, the first refrigerating module 140 works, and the second refrigerating module 150 does not work; when the refrigerating effect of the first refrigerating module 140 cannot meet the preset refrigerating requirement of the liquid cooling system, the fourth control valve C4 is closed, the fifth control valve C5 is opened, and both the first refrigerating module 140 and the second refrigerating module 150 work.

Optionally, the first refrigeration module is a closed cooling tower, and the second refrigeration module is a water chiller. The closed cooling tower comprises a fan module and a spraying module, and the temperature of cooling liquid can be reduced when the fan module and the spraying module work. Therefore, the refrigerating efficiency of the liquid cooling system can be flexibly adjusted by controlling the water chilling unit, the fan module and the spraying module. When the ambient temperature is proper and the closed cooling tower is only opened, the cooling capacity required by the system can be met, and the working condition is adopted. The working condition completely adopts a natural cold source, so that the energy saving to the maximum extent is realized; when the ambient temperature is too high and the closed cooling tower cannot meet the refrigeration requirement, the water chilling unit is started to supplement refrigeration.

In some embodiments, a plurality of temperature sensors may be further disposed in the liquid cooling system, and the temperature sensors may detect temperature data of the liquid cooling system. The temperature data can embody the heat dissipation effect of the liquid cooling system and provide data support for automatic adjustment of the liquid cooling system.

Optionally, the liquid cooling system comprises a first temperature sensor and/or a second temperature sensor.

The first temperature sensor is arranged at the inlet of the liquid cooling circulation loop and is used for detecting the temperature of cooling liquid at the inlet of the liquid cooling circulation loop; the second temperature sensor is arranged at the outlet of the liquid cooling circulation loop and used for detecting the temperature of cooling liquid at the outlet of the liquid cooling circulation loop.

The inlet of the liquid cooling circulation loop is the initial position of the liquid cooling circulation loop passing through the liquid cooling heat exchanger, and the outlet of the liquid cooling circulation loop is the final position of the liquid cooling circulation loop passing through the liquid cooling heat exchanger.

Optionally, the liquid cooling system comprises a third temperature sensor and/or a fourth temperature sensor.

The third temperature sensor is arranged at the liquid inlet and used for detecting the temperature of the cooling liquid at the liquid inlet; and the fourth temperature sensor is arranged at the liquid outlet and used for detecting the temperature of the cooling liquid at the liquid outlet.

Optionally, the liquid cooling system includes a fifth temperature sensor.

And the fifth temperature sensor is arranged on the wind-liquid heat exchanger and used for detecting the temperature of the wind-liquid heat exchanger.

Optionally, the liquid cooling system includes a sixth temperature sensor.

And the sixth temperature sensor is arranged at the outlet of the second liquid pump and used for detecting the actual water supply temperature.

Optionally, the liquid cooling system includes: an outdoor temperature sensor.

And the outdoor temperature sensor is used for monitoring the outdoor dry bulb temperature and the outdoor wet bulb temperature.

In addition, the embodiment of the application provides a liquid cooling cabinet, and the liquid cooling cabinet includes cabinet body and foretell liquid cooling system.

Optionally, the liquid cooling heat exchanger is arranged at the bottom side of the cabinet body, and the wind-liquid heat exchanger is arranged at the front side or the rear side of the cabinet body; the first liquid cooling branch circuit, the second liquid cooling branch circuit and the third liquid cooling branch circuit are arranged in the cabinet body.

The embodiment of the application also provides a control method of the liquid cooling system, which can be applied to the liquid cooling system. Referring to fig. 4, fig. 4 is a control method of a liquid cooling system according to an embodiment of the present application. In this embodiment, the control method of the liquid cooling system may include steps S110 to S130, which specifically include the following steps:

s110: the first temperature and/or the second temperature are/is acquired.

The first temperature is the temperature of the cooling liquid at the inlet of the liquid cooling circulation loop, and the second temperature is the temperature of the cooling liquid at the outlet of the cold circulation loop. The liquid cooling circulation loop passes through the liquid cooling heat exchanger and at least one cold plate.

S120: and controlling the liquid cooling system to be in a series mode under the condition that the first temperature is smaller than or equal to a first preset temperature or the second temperature is smaller than or equal to a second preset temperature.

When the liquid cooling system is in a series mode, cooling liquid in the liquid cooling system sequentially passes through the air-liquid heat exchanger and the liquid cooling heat exchanger through the first liquid cooling branch.

S130: and controlling the liquid cooling system to be in a parallel mode under the condition that the first temperature is greater than a first preset temperature or the second temperature is greater than a second preset temperature.

When the liquid cooling system is in the parallel mode, the cooling liquid in the liquid cooling system passes through the air-liquid heat exchanger through the second liquid cooling branch circuit, and the cooling liquid in the liquid cooling system passes through the liquid cooling heat exchanger through the third liquid cooling branch circuit.

In summary, according to the liquid cooling system control method provided by the embodiment, the connection mode of the liquid cooling pipeline of the liquid cooling system is controlled through the temperature judgment of the liquid inlet and/or the liquid outlet, the utilization efficiency of cold energy can be improved in the series mode, the heat exchange effect of the liquid cooling heat exchanger can be ensured in the parallel mode, and the utilization efficiency of cold energy can be improved and the heat dissipation effect can be ensured through the connection mode which is automatically and flexibly selected.

In this embodiment, control of the connection mode of the liquid cooling pipeline can be achieved by control of opening and closing of three control valves.

In one embodiment, controlling the liquid cooling system in the series mode when the first temperature is less than or equal to a first preset temperature or the second temperature is less than or equal to a second preset temperature includes:

and controlling the liquid cooling system to be in a series mode under the condition that the duration time of the first temperature which is smaller than or equal to the first preset temperature exceeds the first buffer time or the duration time of the second temperature which is smaller than or equal to the second preset temperature exceeds the first buffer time.

When the first temperature is greater than a first preset temperature or the second temperature is greater than a second preset temperature, controlling the liquid cooling system to be in a parallel mode, including: and controlling the liquid cooling system to be in a parallel mode under the condition that the duration time when the first temperature is greater than the first preset temperature exceeds the second buffer time or the duration time when the second temperature is greater than the second preset temperature exceeds the second buffer time.

In this embodiment, when the temperature condition changes and the connection mode is to be switched, the first buffer time and the second buffer time need to be satisfied, and then the connection mode is switched. The first buffering time may be the same or different. The problem that the connection mode of the liquid cooling system is switched back and forth when the temperature condition critical point is avoided by setting the first buffer time and the second buffer time.

It should be noted that, the emergency mode is used for the refrigeration guarantee under the emergency, and is started under the condition that the refrigeration module of the liquid cooling system does not meet the preset refrigeration requirement, so that the heat dissipation of the liquid cooling heat exchanger can be preferentially guaranteed.

In this embodiment, the opening of the flow regulating valve of the feeding liquid inlet may be controlled according to the temperature of the cooling liquid at the inlet of the liquid cooling circulation loop, the temperature of the cooling liquid at the outlet of the liquid cooling circulation loop, the temperature of the cooling liquid at the liquid outlet, and/or the temperature of the wind-liquid heat exchanger.

It should be noted that the liquid inlet and outlet referred to by the third temperature and the fourth temperature are not liquid inlet and outlet of the liquid cooling circulation loop. The liquid inlet and outlet referred by the third temperature and the fourth temperature refer to the common liquid inlet and outlet of the first liquid cooling branch, the second liquid cooling branch and the third liquid cooling branch. The liquid cooling circulation loop is used for bringing heat in the equipment to be cooled to the liquid cooling heat exchanger, and the first liquid cooling branch, the second liquid cooling branch and the third liquid cooling branch are used for bringing heat in the liquid cooling heat exchanger and the wind liquid heat exchanger to the outside.

It can be appreciated that when the detected temperature, the first temperature and/or the second temperature exceed the preset values, the opening degree of the flow regulating valve of the liquid inlet needs to be correspondingly adjusted.

In this embodiment, the liquid cooling system may include a plurality of refrigeration modules, so as to save energy, when the temperature of the cooling liquid in the liquid pump water outlet is suitable, only one refrigeration module is used to cool the cooling liquid, and when the temperature of the cooling liquid in the liquid pump water outlet is higher, two refrigeration modules are needed to cool the cooling liquid.

In this embodiment, the first refrigeration module is a closed cooling tower, and the second refrigeration module is a water chiller; the closed cooling tower comprises a fan module and a spraying module, so that the working conditions of the fan module, the spraying module and the water chilling unit can be determined according to the temperature of cooling liquid in a water outlet of the liquid pump, and the refrigerating effect and the energy conservation are both considered.

In the embodiment, the outdoor dry bulb temperature and the outdoor wet bulb temperature can be detected, and the working condition of the refrigeration module is controlled according to the outdoor dry bulb temperature, the outdoor wet bulb temperature and the temperature of the cooling liquid in the water outlet of the liquid pump. The cooling liquid can be influenced by the temperature of the surrounding environment when flowing in the cooling pipeline, and if the temperature of the surrounding environment is lower, the cooling liquid can also achieve the effect of cooling in the flowing process of the cooling pipeline.

The start of the water chiller needs time and energy consumption, so when the temperature condition changes and the water chiller needs to be started, the third buffer time needs to be met for switching. The problem that the water chilling unit is repeatedly started at the critical point of the temperature condition can be avoided by setting the third buffer time.

The above embodiments can be combined by one skilled in the art according to actual needs without collision. The liquid cooling system and the liquid cooling cabinet can be applied to heat dissipation in a plurality of scenes, and a cold machine room for placing a server is exemplified below.

The cold plate type liquid cooling is a heat dissipation mode that a cold plate is attached to a main heating element of a server, and heat of the heating element is taken away through liquid flowing in the cold plate. The cold plate is arranged on a series of servers in the cabinet, an interface is reserved outside the servers and is connected with an external circulating pipeline, and the external circulating pipeline is usually fixed on the cabinet in the form of a liquid separating unit (manifold) metal frame and is connected with a cold liquid distributing device heat exchanging unit (Cooling Distribution Unit, CDU) to form a complete passage. The heat of the server is transmitted to the heat exchange unit (namely the liquid cooling heat exchanger) along the heat exchange pipeline (namely the liquid cooling circulation loop) through the cold plate, and the heat is indirectly transmitted to the outdoor side through the heat exchange unit.

The heat exchange unit is divided into a centralized CDU and a distributed CDU, wherein the centralized CDU is arranged outside the liquid cooling cabinet, and one CDU bears heat dissipation of a plurality of cabinets; the distributed CDU is combined with the cabinets, each cabinet is internally provided with one CDU, and each CDU bears heat dissipation of the corresponding cabinet.

For devices with low heat productivity such as a hard disk and a memory in a server, a cold plate is not arranged, cold plate type liquid cooling cannot be used, and the devices still need to be solved by using a conventional air cooling air conditioning system, and heat is brought out of the server through a server fan.

The liquid cooling system of this embodiment is divided into primary side pipeline and secondary side pipeline, and primary side pipeline exchanges heat through arranging in the inside distributed CDU of rack with the secondary side pipeline, and primary side pipeline distributes in the inside and outside of rack promptly, and the whole inside that is located of rack of secondary side pipeline.

The inner side pipeline of the cabinet can be regarded as the three liquid cooling branches, the outer primary side pipeline of the cabinet can be regarded as the two cooling branches, and the secondary side pipeline can be regarded as the liquid cooling circulation loop.

Referring to fig. 5, fig. 6 and fig. 7, referring to fig. 5, fig. 5 is a schematic structural diagram of a pipeline on one side of an interior of a cabinet according to an embodiment of the present application. Fig. 6 is a schematic structural diagram of a secondary side pipeline provided in an embodiment of the present application, and fig. 7 is a schematic structural diagram of a primary side pipeline outside a cabinet provided in an embodiment of the present application.

Fig. 7 includes a machine room 0, a water chiller 1, a heat exchanger 2, a closed cooling tower 3, a liquid pump 4, a plurality of

liquid cooling cabinets

5 and 6, an electric valve 7, an electric valve 8, a plurality of flow control valves 100, and connecting pipes between the components.

2 operation conditions exist in the primary side pipeline outside the cabinet, and the working condition (1): the closed cooling tower 3 is opened, the water chilling unit 1 is closed, the electric valve 7 is opened, the electric valve 8 is closed, primary side fluid radiates heat with outdoor environment only through the closed cooling tower 3, and when the environment temperature is proper, only the closed cooling tower is opened, and the required cooling capacity of the system can be met, and the working condition is adopted. The working condition completely adopts a natural cold source, so that the energy saving to the maximum extent is realized;

working condition (2): the closed cooling tower 3 and the water chilling unit 1 are simultaneously opened, the electric valve 7 is closed, the electric valve 8 is opened, primary side fluid is precooled through the closed cooling tower 3 firstly, then heat exchange is carried out between the primary side fluid and the water chilling unit 1 through the heat exchange device 2, and when the ambient temperature is too high, the water chilling unit is started to supplement refrigeration when the closed cooling tower cannot meet the refrigeration requirement.

The method comprises the steps of presetting a primary side water supply temperature T1, a dry bulb heat exchange temperature difference A and a wet bulb heat exchange temperature difference B, monitoring an outdoor environment dry bulb temperature Ts and an outdoor wet bulb temperature Tw, setting a temperature sensor at an outlet of a liquid pump 4, and monitoring an actual water supply temperature T2. The operating conditions and modes are as follows:

When Ts+A is less than T1 and T2 is less than T1, the closed cooling tower 3 only starts a fan and closes a spraying function under the operating condition (1); if T2 is more than T1 and Ts is more than 0 ℃, further starting a spraying function to enable T2 to be less than T1, and if T2 is still not less than T1 after the spraying function is started for a period of time, operating the working condition (2), and keeping the fan and the spraying function of the closed cooling tower 3 on.

When Ts+A is more than T1, tw+B is less than T1, and T2 is less than T1, operating the working condition (1), and starting the fan and the spraying function of the closed cooling tower 3; if T2 is more than T1, the working condition (2) is operated, and the opening of the fan and the spraying function of the closed cooling tower 3 is kept.

When Ts+A is more than T1, tw+B is more than T1, the working condition (2) is operated, and the fan and spraying functions of the closed cooling tower 3 are kept on.

When the operation conditions change and the operation mode is required to be switched, a certain buffer time t1 is required to be met, and then the operation mode is switched.

Fig. 5 includes a distributed CDU12, a heat exchange device 13, an electric valve 14, an electric valve 15, an electric valve 16, and connecting pipes between the components, where a primary pipe inside the cabinet is in communication with a primary pipe outside the cabinet.

The distributed CDUs 12 and the heat exchange means 13 are integrated inside the cabinet 5 (6), the distributed CDUs 12 being located below the cabinet, the heat exchange means 13 being located on the front or rear side of the cabinet.

The primary side pipeline inside the cabinet is provided with 3 connection modes, and the connection modes (1): the distributed CDU12 is connected with the heat exchange device 13 in series, the electric valve 15 is opened, the

electric valves

14 and 16 are closed, primary side fluid firstly flows into the heat exchange device 13 after entering the cabinet, absorbs heat of an air cooling heat dissipation part, flows into the distributed CDU12 after a certain temperature rise, exchanges heat with a secondary side fluid, absorbs heat of the secondary side fluid, namely the liquid cooling part, and flows out of the cabinet to dissipate heat of an external system after further temperature rise. By reasonably setting the temperature gradient, the series connection can fully utilize the refrigeration capacity of the primary side fluid.

Connection mode (2): the distributed CDU12 is connected with the heat exchange device 13 in parallel, the

electric valves

14 and 16 are opened, the electric valve 15 is closed, the primary side fluid is divided into two paths after entering the cabinet and flows into the distributed CDU12 and the heat exchange device 13 at the same time, the two paths of fluid absorb the heat of the air cooling part and the liquid cooling part respectively, the two paths of fluid obtain different degrees of temperature rise, and then the two paths of fluid are collected to one pipeline and flow out of the cabinet. The parallel connection provides a lower temperature primary side fluid to secondary side fluid heat exchange for the distributed CDU12, ensuring the heat exchange effect of the liquid cold side.

Connection mode (3): by-pass heat exchanger 13, the primary fluid flows only into distributed CDU12 to perform liquid-cooled partial heat exchange, and at this time, electrically operated valve 16 is opened and electrically operated

valves

14 and 15 are closed.

When the cabinet is normally used, the primary side pipelines in the cabinet can be connected in series or in parallel and can be arranged according to the needs. And the serial connection and the parallel connection can be switched according to the heat exchange requirement of the secondary side. Temperature sensors are respectively arranged at the inlets and outlets of the secondary side fluid of the distributed CDU12, the inlet temperature T3 of the secondary side fluid is monitored, the return temperature T4 is preset, the inlet temperature T5 is preset, the return temperature T6 is preset, and the temperature difference C is preset.

When T3 is more than T5+C or T4 is more than T6+C and a certain buffer time T2 is reached, the liquid cooling part has higher heat dissipation requirement, and the liquid cooling part is switched to a parallel connection mode at the moment, so that lower heat exchange temperature is provided for the secondary side fluid. When T3 is smaller than T5+C or T4 is smaller than T6+C and a certain buffer time T2 is reached, the liquid cooling part dissipates heat in a normal range, is switched into a series mode, and the refrigerating capacity of the primary side fluid is fully utilized.

The connection mode (3) is used for refrigeration guarantee under emergency, when Ts+A > T1, tw+B > T1, and the refrigeration module 1 is required to be started, the refrigeration module 1 cannot be started due to reasons, at the moment, the primary side pipeline in the cabinet is switched into the connection mode (3), the bypass heat exchange device 13 is used for preferentially guaranteeing heat dissipation of the secondary side liquid cooling part.

The secondary side pipeline is positioned in the cabinet, between the CDU and the server and in the server, the distributed CDU12, the liquid pump 9, the plurality of servers 10, the plurality of cold plates 11 in the server and the pipelines among the parts are included in fig. 6, the plurality of servers 10 and the pipelines are connected in parallel, and the secondary side working medium flows out of the CDU and then is connected in parallel into the plurality of servers 10. After the secondary side fluid flows out of the CDU12, the secondary side fluid enters the cold plates 11 of each server along the pipeline, absorbs heat of main heating devices such as a CPU (Central processing Unit), a GPU (graphics processing Unit) and the like through the cold plates 11, then flows out of the server, and returns to the CDU12 to exchange heat with the primary side pipeline. The heat of the memory, hard disk, etc. is carried into the heat exchange device 13 by the server fan using air, where it exchanges heat with the primary side fluid.

The primary side fluid enters the inlets of the cabinets and is provided with flow regulating valves 100, the secondary side fluid inlets and outlets of the distributed CDU12 are respectively provided with temperature sensors, the secondary side fluid inlet temperature T3 is monitored, the liquid return temperature T4 is preset, the liquid inlet temperature T5 is preset, the liquid return temperature T6 is preset, and the temperature difference C is preset.

For a cabinet with T3 being more than T5+C or T4 being more than T6+C, the opening degree of the cabinet flow regulating valve 100 is regulated; for a cabinet with T3 less than T5-C or T4 less than T6-C, reducing the opening of the cabinet flow regulating valve 100; and the primary side fluid flow which is led into each cabinet is reasonably distributed, so that the heat dissipation effect of each cabinet is ensured.

Only one set of pipeline is arranged between the liquid cooling cabinet and an external system, but the heat dissipation of the liquid cooling and the air cooling in the cold plate type liquid cooling can be solved, the outdoor natural cold source can be fully utilized by reasonably setting the running temperature, and even the outdoor natural cold source can be utilized for heat exchange all the year round, so that the arrangement of the pipeline of the system in the machine room is greatly simplified, and meanwhile, the extremely high energy conservation performance is achieved.

The embodiment innovates a cold plate type liquid cooling cabinet pipeline connection mode of the combined distributed CDU, and through pipeline optimization, control valves, temperature sensors and the like, not only can cold plate type liquid cooling system pipelines be greatly simplified, but also the temperature gradient of the system can be reasonably set according to the external environment condition and the system operation working condition, the circulation of working media inside and outside the cabinet can be flexibly adjusted, and the energy is saved to the maximum extent. The system provides multiple working conditions simultaneously, the system form can be flexibly adjusted according to actual measurement operation requirements, and the high-efficiency utilization of energy sources is ensured. The system simultaneously considers the operation condition adjustment of the external refrigeration module of the frame and the closed cooling tower, thereby forming the complete system composition and the complete automatic control of the distributed CDU system.

Fig. 8 is a schematic physical structure of an electronic device provided in an embodiment of the present application, and as shown in fig. 8, the electronic device may include: in this embodiment, the electronic device may include a memory (memory) 820, a processor (processor) 810, and a computer program stored on the memory 820 and executable on the processor 810. The processor 810 implements the control method of the liquid cooling system provided by the above methods when executing the program.

Optionally, the electronic device may further comprise a communication bus 830 and a communication interface (Communications Interface) 840, wherein the processor 810, the communication interface 840, and the memory 820 complete communication with each other via the communication bus 830. The processor 810 may call logic instructions in the memory 820 to execute the control method of the liquid cooling system provided by the above methods, and the steps and principles thereof are described in detail in the above methods and are not repeated herein.

Further, the logic instructions in memory 820 described above may be implemented in the form of software functional units and stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

In another aspect, the present invention further provides a non-transitory computer readable storage medium, on which a computer program is stored, where the computer program is implemented when executed by a processor to perform the method for controlling a liquid cooling system provided by the above methods, and the steps and principles of the method are described in detail in the above methods and are not described herein.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A liquid cooling system, comprising: the device comprises a first liquid cooling branch, a second liquid cooling branch and a third liquid cooling branch;

the first liquid cooling branch is provided with a liquid inlet and a liquid outlet, and is sequentially connected with a wind-liquid heat exchanger, a first control valve and a liquid cooling heat exchanger in series; the first control valve is used for controlling the on-off of the first liquid cooling branch;

one end of the second liquid cooling branch is connected between the first control valve and the wind-liquid heat exchanger, the other end of the second liquid cooling branch is connected with the liquid outlet end of the liquid cooling heat exchanger, the second liquid cooling branch is provided with a second control valve, and the second control valve is used for controlling the on-off of the second liquid cooling branch;

one end of the third liquid cooling branch is connected with the liquid inlet end of the wind-liquid heat exchanger, the other end of the third liquid cooling branch is connected between the first control valve and the liquid cooling heat exchanger, the third liquid cooling branch is provided with a third control valve, and the third control valve is used for controlling the on-off of the third liquid cooling branch.

2. The liquid cooling system of claim 1, further comprising a liquid cooling circulation loop, wherein the cooling liquid in the liquid cooling circulation loop exchanges heat at the liquid cooling heat exchanger, the liquid cooling circulation loop having a first liquid pump and at least one cold plate.

3. The liquid cooling system according to claim 2, further comprising:

the first temperature sensor is arranged at the inlet of the liquid cooling circulation loop and is used for detecting the temperature of cooling liquid at the inlet of the liquid cooling circulation loop; and/or the number of the groups of groups,

the second temperature sensor is arranged at the outlet of the liquid cooling circulation loop and is used for detecting the temperature of cooling liquid at the outlet of the liquid cooling circulation loop;

4. The liquid cooling system of claim 1, further comprising:

the third temperature sensor is arranged at the liquid inlet and used for detecting the temperature of the cooling liquid at the liquid inlet; and/or the number of the groups of groups,

and the fourth temperature sensor is arranged at the liquid outlet and used for detecting the temperature of the cooling liquid at the liquid outlet.

5. The liquid cooling system of claim 1, further comprising:

6. The liquid cooling system of claim 1, further comprising:

7. The liquid cooling system of claim 1, further comprising: the liquid cooling device comprises a liquid inlet, a liquid outlet, a first cooling branch, a first refrigerating module and a second liquid pump, wherein one end of the first cooling branch is connected with the liquid inlet, the other end of the first cooling branch is connected with the liquid outlet, and the first cooling branch is connected with the first refrigerating module and the second liquid pump in series.

8. The liquid cooling system of claim 7, wherein a fourth control valve is connected in series with the first cooling branch, the fourth control valve being connected in series between the first refrigeration module and the second liquid pump;

the liquid cooling system further comprises a second cooling branch, one end of the second cooling branch is connected between the liquid outlet end of the first refrigerating module and the fourth control valve, the other end of the second cooling branch is connected between the liquid inlet end of the second liquid pump and the fourth control valve, and the second cooling branch is connected with a second refrigerating module and a fifth control valve in series.

9. The liquid cooling system according to claim 8, wherein,

the first refrigeration module is a closed cooling tower, and the second refrigeration module is a water chilling unit.

10. The liquid cooling system according to any one of claims 7 to 9, further comprising:

and the sixth temperature sensor is arranged at the outlet of the second liquid pump and is used for detecting the actual water supply temperature.

11. The liquid cooling system of claim 7, further comprising:

12. A liquid cooled cabinet comprising a cabinet body and the liquid cooling system of any one of claims 1-6.

13. The liquid cooled cabinet of claim 12, wherein,

the liquid cooling heat exchanger is arranged at the bottom side of the cabinet body, and the wind-liquid heat exchanger is arranged at the front side or the rear side of the cabinet body; the first liquid cooling branch circuit, the second liquid cooling branch circuit and the third liquid cooling branch circuit are arranged in the cabinet body.

14. A method for controlling a liquid cooling system, comprising:

acquiring a first temperature and/or a second temperature; the first temperature is the temperature of the cooling liquid at the inlet of the liquid cooling circulation loop, and the second temperature is the temperature of the cooling liquid at the outlet of the liquid cooling circulation loop; wherein the liquid cooling circulation loop passes through the liquid cooling heat exchanger and at least one cold plate;

Controlling the liquid cooling system to be in a series mode under the condition that the first temperature is smaller than or equal to a first preset temperature or the second temperature is smaller than or equal to a second preset temperature;

controlling the liquid cooling system to be in a parallel mode under the condition that the first temperature is greater than a first preset temperature or the second temperature is greater than a second preset temperature;

when the liquid cooling system is in a series mode, cooling liquid in the liquid cooling system sequentially passes through the air-liquid heat exchanger and the liquid cooling heat exchanger through a first liquid cooling branch; when the liquid cooling system is in a parallel mode, the cooling liquid in the liquid cooling system passes through the wind-liquid heat exchanger through the second liquid cooling branch circuit, and the cooling liquid in the liquid cooling system passes through the liquid cooling heat exchanger through the third liquid cooling branch circuit.

15. The method of claim 14, wherein the controlling the liquid cooling system in the series mode comprises:

the first control valve is controlled to be opened, and the second control valve and the third control valve are controlled to be closed;

the controlling the liquid cooling system in a parallel mode includes:

controlling the first control valve to be closed, and controlling the second control valve and the third control valve to be opened;

The first control valve is arranged on the first liquid cooling branch, the second control valve is arranged on the second liquid cooling branch, and the third control valve is arranged on the third liquid cooling branch.

16. The method according to claim 14, wherein the controlling the liquid cooling system in the series mode in the case where the first temperature is less than or equal to a first preset temperature or the second temperature is less than or equal to a second preset temperature comprises:

controlling the liquid cooling system to be in a series mode under the condition that the duration time of the first temperature which is smaller than or equal to the first preset temperature exceeds a first buffer time or the duration time of the second temperature which is smaller than or equal to the second preset temperature exceeds the first buffer time;

and controlling the liquid cooling system to be in a parallel mode under the condition that the first temperature is greater than a first preset temperature or the second temperature is greater than a second preset temperature, wherein the method comprises the following steps:

and controlling the liquid cooling system to be in a parallel mode under the condition that the duration time of the first temperature being greater than the first preset temperature exceeds a second buffer time or the duration time of the second temperature being greater than the second preset temperature exceeds the second buffer time.

17. The method for controlling a liquid cooling system according to claim 15, further comprising:

controlling the liquid cooling system to be in an emergency mode under the condition that a refrigerating module of the liquid cooling system does not meet the preset refrigerating requirement;

when the liquid cooling system is in an emergency mode, the first control valve and the second control valve are closed, the third control valve is opened, and cooling liquid in the liquid cooling system passes through the liquid cooling heat exchanger through a third liquid cooling branch.

18. The method for controlling a liquid cooling system according to claim 14, further comprising:

and controlling the opening degree of the flow regulating valve of the liquid inlet to regulate the flow of the entering cooling liquid.

19. The method according to claim 14, wherein after the first temperature and/or the second temperature are/is obtained, further comprising:

acquiring a detection temperature;

controlling the flow rate of the cooling liquid of the liquid inlet according to at least one of the detected temperature, the first temperature and the second temperature;

the detection temperature is at least one of a third temperature, a fourth temperature and a fifth temperature, the third temperature is the cooling liquid temperature of the liquid inlet, the fourth temperature is the cooling liquid temperature of the liquid outlet, and the fifth temperature is the temperature of the wind-liquid heat exchanger.

20. The method according to claim 19, wherein controlling the flow rate of the cooling liquid in the liquid inlet according to at least one of the detected temperature, the first temperature, and the second temperature, comprises:

when the first temperature is smaller than or equal to a third preset temperature or the second temperature is smaller than or equal to a fourth preset temperature, reducing the opening of the flow regulating valve of the liquid inlet so that the flow of the entering cooling liquid is reduced;

when the first temperature is higher than a third preset temperature or the second temperature is higher than a fourth preset temperature, the opening of the flow regulating valve of the liquid inlet is regulated to enable the flow of the entering cooling liquid to be increased.

21. The method for controlling a liquid cooling system according to claim 14, further comprising:

obtaining a sixth temperature of cooling liquid in a liquid pump water outlet, wherein the liquid pump provides power for the first liquid cooling branch, the second liquid cooling branch and the third liquid cooling branch;

when the sixth temperature is less than or equal to a fifth preset temperature, the first refrigeration module is controlled to work, and the second refrigeration module is not controlled to work;

and when the sixth temperature is higher than the fifth preset temperature, controlling the first refrigeration module and the second refrigeration module to work.

22. The method of claim 14, wherein the first refrigeration module is a closed cooling tower and the second refrigeration module is a chiller; further comprises:

when the sixth temperature is less than or equal to a fifth preset temperature, controlling a fan module of the closed cooling tower to work, wherein a spraying module of the closed cooling tower and the water chilling unit do not work;

when the duration time of the sixth temperature which is larger than the fifth preset temperature does not exceed the third buffer time, controlling a fan module and a spraying module of the closed cooling tower to work, wherein the water chilling unit does not work;

and when the duration time that the sixth temperature is greater than the fifth preset temperature exceeds the third buffer time, controlling the fan module, the spraying module and the water chilling unit of the closed cooling tower to work.

23. The method for controlling a liquid cooling system according to claim 14, further comprising:

acquiring an outdoor dry bulb temperature, an outdoor wet bulb temperature and a sixth temperature of cooling liquid in a water outlet of a liquid pump, wherein the liquid pump provides power for the first liquid cooling branch, the second liquid cooling branch and the third liquid cooling branch;

And controlling the working conditions of the first refrigeration module and the second refrigeration module according to the outdoor dry bulb temperature, the outdoor wet bulb temperature and the sixth temperature.

24. The method of claim 23, wherein the first refrigeration module is a closed cooling tower and the second refrigeration module is a chiller; and controlling the working conditions of the first refrigeration module and the second refrigeration module according to the outdoor dry bulb temperature, the outdoor wet bulb temperature and the sixth temperature, wherein the working conditions comprise:

when the sum of the outdoor dry bulb temperature and the dry bulb heat exchange temperature difference is smaller than or equal to a fifth preset temperature, and the sixth temperature is smaller than or equal to the fifth preset temperature, controlling a fan module of the closed cooling tower to work, wherein a spraying module of the closed cooling tower and the water chilling unit do not work;

when the sum of the outdoor dry bulb temperature and the dry bulb heat exchange temperature difference is smaller than or equal to a fifth preset temperature, the sixth temperature is larger than the fifth preset temperature, and the outdoor dry bulb temperature is larger than zero degree, a fan module and a spray module of the closed cooling tower are controlled to work, and the water chilling unit does not work;

When the sum of the outdoor dry bulb temperature and the dry bulb heat exchange temperature difference is smaller than or equal to a fifth preset temperature, the sixth temperature is larger than the fifth preset temperature, and when the outdoor dry bulb temperature is larger than zero degree, the fan module and the spray module of the closed cooling tower are controlled to work, and after the water chilling unit does not work, the water chilling unit further comprises:

25. The method of claim 23, wherein the first refrigeration module is a closed cooling tower and the second refrigeration module is a chiller; and controlling the working conditions of the first refrigeration module and the second refrigeration module according to the outdoor dry bulb temperature, the outdoor wet bulb temperature and the sixth temperature, wherein the working conditions comprise:

when the sum of the outdoor dry bulb temperature and the dry bulb heat exchange temperature difference is larger than a fifth preset temperature, the sum of the outdoor wet bulb temperature and the wet bulb heat exchange temperature difference is smaller than or equal to the preset temperature, and the sixth temperature is smaller than or equal to the fifth preset temperature, controlling a fan module and a spray module of the closed cooling tower to work, wherein the water chilling unit does not work;

When the sum of the outdoor dry bulb temperature and the dry bulb heat exchange temperature difference is larger than a fifth preset temperature, and the sum of the outdoor wet bulb temperature and the wet bulb heat exchange temperature difference is smaller than or equal to the preset temperature, and the sixth temperature is larger than the fifth preset temperature, controlling a fan module, a spraying module and the water chilling unit of the closed cooling tower to work;

when the sum of the outdoor dry bulb temperature and the dry bulb heat exchange temperature difference is larger than a fifth preset temperature, and the sum of the outdoor wet bulb temperature and the wet bulb heat exchange temperature difference is larger than the preset temperature, controlling a fan module, a spraying module and a water chilling unit of the closed cooling tower to work.

26. An electronic device comprising a processor and a memory storing a computer program, characterized in that the processor, when executing the computer program, realizes the steps of the method for controlling a liquid cooling system according to any one of claims 14 to 25.

27. A non-transitory computer readable storage medium having stored thereon a computer program, characterized in that the computer program when executed by a processor implements the steps of the method of controlling a liquid cooling system according to any one of claims 14 to 25.