Liquid cooling unit and control method thereof

Abstract

The present application relates to a liquid cooling unit and a control method thereof, the liquid cooling unit comprising: a liquid cooling circulation system, a cold air production system and a cold water production system; wherein the liquid cooling circulation system comprises a first liquid cooling pipeline, a second liquid cooling pipeline and at least one third liquid cooling pipeline arranged between the first liquid cooling pipeline and the second liquid cooling pipeline; the cold water production system comprises a first heat exchanger, and the cold air production system comprises a second heat exchanger; the first heat exchanger is used to exchange heat between the refrigerant in the cold water production system and the coolant in the liquid cooling circulation system, so as to cool the coolant in the liquid cooling circulation system and then dissipate heat to the at least one device to be cooled flowing through the third liquid cooling pipeline; the second heat exchanger is used to exchange heat between the refrigerant in the cold air production system and the coolant in the liquid cooling circulation system, so as to cool the indoor temperature of the target space after cooling the refrigerant in the cold air production system, thereby realizing the diversification of the functions of the liquid cooling unit.

Description

Technical Field

[0001] The present application relates to the field of refrigeration technology, and in particular to a liquid cooling unit and a control method thereof. Background Art

[0002] Liquid cooling units have significant advantages in heat dissipation performance, temperature control, noise control and space occupancy, and are therefore widely used in modern industries and data centers.

[0003] However, the existing liquid cooling units have relatively simple functions, usually only focusing on indoor cooling or cooling high-temperature objects, and it is difficult to meet the diverse needs in complex scenarios. Therefore, how to achieve the diversification of the functions of liquid cooling units has become a technical problem that needs to be solved urgently. Summary of the Invention

[0004] The present application provides a liquid cooling unit and a control method thereof to solve the problem that the existing liquid cooling unit has relatively single functions and is difficult to meet the diverse needs in complex scenarios.

[0005] In a first aspect, an embodiment of the present application provides a liquid cooling unit, the liquid cooling unit comprising: a liquid cooling circulation system, a cold air production system, and a cold water production system;

[0006] Wherein, the liquid cooling circulation system includes a first liquid cooling pipeline, a second liquid cooling pipeline and at least one third liquid cooling pipeline arranged between the first liquid cooling pipeline and the second liquid cooling pipeline;

[0007] The cold water production system includes a first heat exchanger, and the cold air production system includes a second heat exchanger, the liquid outlet of the first heat exchanger is connected to the liquid inlet of the second heat exchanger through the first liquid cooling pipeline, and the liquid inlet of the first heat exchanger is connected to the liquid outlet of the second heat exchanger through the second liquid cooling pipeline;

[0008] The first heat exchanger is used to exchange heat between the refrigerant in the cold water production system and the coolant in the liquid cooling circulation system, so as to cool the coolant in the liquid cooling circulation system and then dissipate heat from the equipment to be cooled that flows through at least one third liquid cooling pipeline. The second heat exchanger is used to exchange heat between the refrigerant in the cold air production system and the coolant in the liquid cooling circulation system, so as to cool the indoor temperature of the target space after cooling the refrigerant in the cold air production system.

[0009] Optionally, the liquid cooling circulation system further includes a fourth liquid cooling pipeline and a fifth liquid cooling pipeline;

[0010] The first liquid cooling pipeline is provided with a first connection point, the fourth liquid cooling pipeline is connected to the first liquid cooling pipeline through the first connection point, and the fourth liquid cooling pipeline is used to provide coolant for the liquid cooling circulation system;

[0011] A second connection point is provided on the second liquid cooling pipeline, and the fifth liquid cooling pipeline is connected to the second liquid cooling pipeline through the second connection point. The fifth liquid cooling pipeline is used to recover the coolant in the liquid cooling circulation system.

[0012] Optionally, the liquid cooling circulation system further includes a water flow switch;

[0013] Wherein, the water flow switch is arranged between the first liquid cooling pipeline and the second liquid cooling pipeline, and the water flow switch is located downstream of the first connection point and the second connection point.

[0014] Optionally, the first heat exchanger is a first evaporator, and the cold water production system further includes a first compressor, a first condenser and a first fan;

[0015] Wherein, the first evaporator, the first compressor and the first condenser are connected in sequence through pipelines to form a first refrigerant circulation pipeline;

[0016] When the first compressor is started, the refrigerant in the first refrigerant circulation pipeline absorbs heat through the first evaporator and releases heat through the first condenser;

[0017] The first fan is arranged opposite to the first condenser, and is used to discharge heat released by the first condenser from the target space.

[0018] Optionally, the cold water production system further includes a first electronic expansion valve, a first pressure sensor, a second pressure sensor, a first switch, a second switch, a first temperature sensing package, a second temperature sensing package and a first controller;

[0019] The first electronic expansion valve is provided on the pipeline between the first evaporator and the first condenser, the first pressure sensor, the first switch and the first temperature-sensitive package are all provided on the pipeline between the first condenser and the first compressor, and the second pressure sensor, the second switch and the second temperature-sensitive package are all provided on the pipeline between the first compressor and the first evaporator.

[0020] The first compressor, the first fan, the first electronic expansion valve, the first pressure sensor, the second pressure sensor, the first switch, the second switch, the first temperature-sensing package, and the second temperature-sensing package are all electrically connected to the first controller;

[0021] The first controller is used to dynamically control the frequency of the first compressor, the frequency of the first fan, and the opening of the first electronic expansion valve based on temperature information collected by the first temperature sensing package and the second temperature sensing package, and dynamically control the opening of the first switch and the second switch based on pressure information collected by the first pressure sensor and the second pressure sensor.

[0022] Optionally, the second heat exchanger is a second condenser, and the cold air production system further includes a second evaporator, a second compressor and a second fan;

[0023] Wherein, the second condenser, the second evaporator and the second compressor are connected in sequence through pipelines to form a second refrigerant circulation pipeline;

[0024] When the second compressor is started, the refrigerant in the second refrigerant circulation pipeline releases heat through the second condenser and absorbs heat through the second evaporator;

[0025] The second fan is arranged opposite to the second evaporator, and is used to blow the cold air after absorbing heat in the second evaporator into the target space.

[0026] Optionally, the cold air production system further includes a second electronic expansion valve, a third pressure sensor, a third switch, a fourth switch, a third temperature sensing package, a fourth temperature sensing package and a second controller;

[0027] The second electronic expansion valve is provided on the pipeline between the second condenser and the second evaporator, the third pressure sensor, the third switch and the third temperature-sensing package are all provided on the pipeline between the second evaporator and the second compressor, and the fourth switch and the fourth temperature-sensing package are both provided on the pipeline between the second compressor and the second condenser.

[0028] The second compressor, the second fan, the second electronic expansion valve, the third pressure sensor, the third switch, the fourth switch, the third temperature-sensing package, and the fourth temperature-sensing package are all electrically connected to the second controller;

[0029] The second controller is used to dynamically control the frequency of the second compressor, the frequency of the second fan and the opening of the second electronic expansion valve according to the temperature information collected by the third temperature sensing package and the fourth temperature sensing package, and dynamically control the opening of the third switch and the fourth switch according to the pressure information collected by the third pressure sensor.

[0030] In a second aspect, an embodiment of the present application further provides a liquid cooling unit control method, which is applied to the liquid cooling unit described in any one of the first aspects. The liquid cooling unit control method includes:

[0031] When both the cold air production system and the cold water production system in the liquid cooling unit are started, heat is exchanged between the refrigerant in the cold water production system and the coolant in the liquid cooling circulation system through the first heat exchanger, so as to cool the coolant in the liquid cooling circulation system and then dissipate heat from at least one device to be cooled that flows through the third liquid cooling pipeline; and heat is exchanged between the refrigerant in the cold air production system and the coolant in the liquid cooling circulation system through the second heat exchanger, so as to cool the indoor temperature of the target space after cooling the refrigerant in the cold air production system;

[0032] When only the cold water production system in the liquid cooling unit is started, heat is exchanged between the refrigerant in the cold water production system and the coolant in the liquid cooling circulation system through the first heat exchanger, so as to cool the coolant in the liquid cooling circulation system and then dissipate heat to the equipment to be cooled that flows through the at least one third liquid cooling pipeline;

[0033] When only the cold air production system is started in the liquid cooling unit, the refrigerant in the cold air production system is heat exchanged with the coolant in the liquid cooling circulation system through the second heat exchanger to cool the refrigerant in the cold air production system and then cool the indoor temperature of the target space.

[0034] Optionally, the first heat exchanger is a first evaporator, and the cold water production system further includes a first compressor, a first fan, a first electronic expansion valve, a first pressure sensor, a second pressure sensor, a first switch, a second switch, a first temperature sensing package, a second temperature sensing package, and a first controller; the method further includes:

[0035] The first controller dynamically controls the frequency of the first compressor, the frequency of the first fan, and the opening of the first electronic expansion valve based on temperature information collected by the first temperature sensing package and the second temperature sensing package, and dynamically controls the opening of the first switch and the second switch based on pressure information collected by the first pressure sensor and the second pressure sensor.

[0036] Optionally, the second heat exchanger is a second condenser, and the cold air production system further includes a second compressor, a second fan, a second electronic expansion valve, a third pressure sensor, a third switch, a fourth switch, a third temperature sensing package, a fourth temperature sensing package, and a second controller; the method further includes:

[0037] The second controller dynamically controls the frequency of the second compressor, the frequency of the second fan, and the opening of the second electronic expansion valve based on the temperature information collected by the third temperature sensing package and the fourth temperature sensing package, and dynamically controls the opening of the third switch and the fourth switch based on the pressure information collected by the third pressure sensor.

[0038] The above technical solution provided by the embodiment of the present application has the following advantages over the prior art: the liquid cooling unit provided by the embodiment of the present application includes: a liquid cooling circulation system, a cold air production system and a cold water production system; wherein, the liquid cooling circulation system includes a first liquid cooling pipeline, a second liquid cooling pipeline and at least one third liquid cooling pipeline arranged between the first liquid cooling pipeline and the second liquid cooling pipeline; the cold water production system includes a first heat exchanger, the cold air production system includes a second heat exchanger, the liquid outlet of the first heat exchanger is connected to the liquid inlet of the second heat exchanger through the first liquid cooling pipeline, and the The liquid inlet of the first heat exchanger is connected to the liquid outlet of the second heat exchanger through the second liquid cooling pipeline; the first heat exchanger is used to exchange heat between the refrigerant in the cold water production system and the coolant in the liquid cooling circulation system, so as to cool the coolant in the liquid cooling circulation system and then dissipate heat from the equipment to be cooled that flows through at least one third liquid cooling pipeline; the second heat exchanger is used to exchange heat between the refrigerant in the cold air production system and the coolant in the liquid cooling circulation system, so as to cool the indoor temperature of the target space after cooling the refrigerant in the cold air production system. In this way, the liquid cooling unit can not only exchange heat between the refrigerant in the cold water production system and the coolant in the liquid cooling circulation system through the first heat exchanger, so as to cool the coolant in the liquid cooling circulation system and then dissipate heat to the equipment to be cooled, but also exchange heat between the refrigerant in the cold air production system and the coolant in the liquid cooling circulation system through the second heat exchanger, so as to cool the refrigerant in the cold air production system and then cool the indoor temperature of the target space, thereby realizing the diversification of the functions of the liquid cooling unit to meet the diverse needs in complex scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0041] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0042] Figure 1 A schematic structural diagram of a liquid cooling unit provided in an embodiment of the present application;

[0043] Figure 2 A flow chart of a liquid cooling unit control method provided in an embodiment of the present application. Description of the drawings:

[0045] 100, liquid cooling circulation system; 200, cold air production system; 300, cold water production system; 110, first liquid cooling pipeline; 120, second liquid cooling pipeline; 130, third liquid cooling pipeline; 310, first heat exchanger; 210, second heat exchanger; 140, fourth liquid cooling pipeline; 150, fifth liquid cooling pipeline; 160, water flow switch; 320, first compressor; 330, first condenser; 340, first fan; 360, first gas-liquid separator; 370, first filter; 351, First electronic expansion valve; 352, first pressure sensor; 353, second pressure sensor; 354, first switch; 355, second switch; 356, first temperature-sensing package; 357, second temperature-sensing package; 220, second evaporator; 230, second compressor; 240, second fan; 260, second gas-liquid separator; 251, second electronic expansion valve; 252, third pressure sensor; 253, third switch; 254, fourth switch; 255, third temperature-sensing package; 256, fourth temperature-sensing package. DETAILED DESCRIPTION

[0046] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0048] In order to solve the problem that the existing liquid cooling units have relatively single functions and are difficult to meet the diverse needs in complex scenarios, the present application provides a liquid cooling unit and a control method thereof, which can realize the diversification of the functions of the liquid cooling unit.

[0049] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a liquid cooling unit provided in an embodiment of the present application. Figure 1 As shown, the liquid cooling unit includes: a liquid cooling circulation system 100, a cold air production system 200 and a cold water production system 300;

[0050] The liquid cooling circulation system 100 includes a first liquid cooling pipeline 110, a second liquid cooling pipeline 120, and at least one third liquid cooling pipeline 130 disposed between the first liquid cooling pipeline 110 and the second liquid cooling pipeline 120;

[0051] The cold water production system 300 includes a first heat exchanger 310, and the cold air production system 200 includes a second heat exchanger 210. The liquid outlet of the first heat exchanger 310 is connected to the liquid inlet of the second heat exchanger 210 through a first liquid cooling pipeline 110, and the liquid inlet of the first heat exchanger 310 is connected to the liquid outlet of the second heat exchanger 210 through a second liquid cooling pipeline 120.

[0052] The first heat exchanger 310 is used to exchange heat between the refrigerant in the cold water production system 300 and the coolant in the liquid cooling circulation system 100, so as to cool the coolant in the liquid cooling circulation system 100 and then dissipate heat from at least one device to be cooled that flows through the third liquid cooling pipeline 130. The second heat exchanger 210 is used to exchange heat between the refrigerant in the cold air production system 200 and the coolant in the liquid cooling circulation system 100, so as to cool the indoor temperature of the target space after cooling the refrigerant in the cold air production system 200.

[0053] Specifically, the first heat exchanger 310 is an evaporator, such as a plate evaporator or a shell-and-tube evaporator. One end of the first heat exchanger 310 is connected to the refrigerant (such as Freon) in the cold water production system 300, and the other end is connected to the coolant (such as cooling water) in the liquid cooling circulation system 100. This first heat exchanger 310 is used to exchange heat between the refrigerant in the cold water production system 300 and the coolant in the liquid cooling circulation system 100. Because the refrigerant flowing from the cold water production system 300 into the first heat exchanger 310 is at a low temperature, the coolant in the liquid cooling circulation system 100 is cooled after heat exchange through the first heat exchanger 310. This low-temperature coolant can then be used to dissipate heat from equipment to be cooled (such as energy storage batteries and high-temperature equipment in the machine room), as well as to exchange heat with the second heat exchanger 210.

[0054] The second heat exchanger 210 is a condenser, such as a plate condenser or a shell-and-tube condenser. One end of the second heat exchanger 210 is connected to the coolant (e.g., cooling water) in the liquid cooling circulation system 100, and the other end is connected to the refrigerant (e.g., Freon) in the cold air production system 200. This second heat exchanger 210 is used to exchange heat between the refrigerant in the cold air production system 200 and the coolant in the liquid cooling circulation system 100. Because the coolant flowing from the liquid cooling circulation system 100 into the second heat exchanger 210 is at a low temperature, the refrigerant in the cold air production system 200 is cooled after heat exchange in the second heat exchanger 210. This allows the low-temperature refrigerant to be used to lower the indoor temperature of a target space (e.g., a machine room).

[0055] It should be noted that the above-mentioned cold air production system 200 and cold water production system 300 can be controlled separately and independently. When both the cold air production system 200 and the cold water production system 300 are started, the refrigerant in the cold water production system 300 can be heat-exchanged with the coolant in the liquid cooling circulation system 100 through the first heat exchanger 310 to dissipate heat from the equipment to be cooled. At the same time, the refrigerant in the cold air production system 200 can be heat-exchanged with the coolant in the liquid cooling circulation system 100 through the second heat exchanger 210 to cool the indoor temperature of the target space. When the cold water production system 300 is started alone, the refrigerant in the cold water production system 300 can be heat-exchanged with the coolant in the liquid cooling circulation system 100 through the first heat exchanger 310 to produce cold water to dissipate heat from the equipment to be cooled. When the cold air production system 200 is started alone, the refrigerant in the cold air production system 200 can be heat exchanged with the coolant in the liquid cooling circulation system 100 through the second heat exchanger 210 to cool the refrigerant in the cold air production system 200, and then the low-temperature refrigerant is used to cool the indoor temperature of the target space.

[0056] In this way, when the cold air production system 200 and the cold water production system 300 are used in combination, the cold air production system 200 is used to adjust the indoor temperature, providing better cooling conditions for the cold water production system 300, so as to significantly improve the cooling capacity of the cold water production system 300, thereby reducing energy consumption. In addition, the low-temperature coolant produced by the cold water production system 300 can not only be used to cool high-temperature equipment, but can also be heat-exchanged with the refrigerant of the cold air production system 200 through the second heat exchanger 210, forming a multi-stage utilization of the coolant, maximizing the cooling potential of the coolant, and further improving energy utilization. In addition, when the cold air production system 200 or the cold water production system 300 is used alone, the function of the liquid cooling unit for indoor cooling or heat dissipation of high-temperature objects can be realized to meet the diverse needs in complex scenarios.

[0057] In an optional embodiment, the liquid cooling circulation system 100 further includes a fourth liquid cooling pipeline 140 and a fifth liquid cooling pipeline 150;

[0058] The first liquid cooling pipeline 110 is provided with a first connection point, and the fourth liquid cooling pipeline 140 is connected to the first liquid cooling pipeline 110 through the first connection point. The fourth liquid cooling pipeline 140 is used to provide coolant for the liquid cooling circulation system 100;

[0059] A second connection point is provided on the second liquid cooling pipeline 120 , and the fifth liquid cooling pipeline 150 is connected to the second liquid cooling pipeline 120 via the second connection point. The fifth liquid cooling pipeline 150 is used to recover the coolant in the liquid cooling circulation system 100 .

[0060] Specifically, the fourth liquid cooling pipeline 140 can be connected to a coolant supply loop to provide coolant to the liquid cooling circulation system 100. The fifth liquid cooling pipeline 150 can be connected to a coolant recovery loop to recover coolant in the liquid cooling circulation system 100.

[0061] When the cold water production system 300 stops working and the cold air production system 200 starts, the fourth liquid cooling pipeline 140 and the fifth liquid cooling pipeline 150 can be used to complete the liquid inlet and return of the second heat exchanger 210, thereby realizing heat exchange of the refrigerant in the second heat exchanger 210, so as to ensure that the liquid cooling unit can work normally when the cold air production system 200 is started alone.

[0062] In an optional embodiment, the liquid cooling circulation system 100 further includes a water flow switch 160;

[0063] The water flow switch 160 is disposed between the first liquid cooling pipeline 110 and the second liquid cooling pipeline 120 , and the water flow switch 160 is located downstream of the first connection point and the second connection point.

[0064] Specifically, the water flow switch 160 is used to control the flow of liquid into and out of the second heat exchanger 210. When the water flow switch 160 is on, the coolant in the first liquid cooling pipeline 110 flows directly into the second liquid cooling pipeline 120 through the water flow switch 160, and does not flow into the second heat exchanger 210 for heat exchange. When the water flow switch 160 is off, the coolant in the first liquid cooling pipeline 110 flows directly into the second heat exchanger 210 for heat exchange. In this way, the state of the water flow switch 160 can be switched according to the operating state of the cold air production system 200. That is, when the cold air production system 200 is started, the water flow switch 160 is turned off; when the cold air production system 200 is stopped, the water flow switch 160 is turned on, to ensure that the liquid cooling unit can operate normally in different modes.

[0065] In an alternative embodiment, please continue to see Figure 1 , the first heat exchanger 310 is a first evaporator, and the cold water production system 300 further includes a first compressor 320, a first condenser 330 and a first fan 340;

[0066] The first evaporator, the first compressor 320 and the first condenser 330 are connected in sequence through pipelines to form a first refrigerant circulation pipeline;

[0067] When the first compressor 320 is started, the refrigerant on the first refrigerant circulation pipeline absorbs heat through the first evaporator and releases heat through the first condenser 330;

[0068] The first fan 340 is disposed opposite to the first condenser 330 , and is used to discharge heat released by the first condenser 330 from the target space.

[0069] Specifically, the first compressor 320 is used to compress the high-temperature, low-pressure refrigerant flowing out of the first evaporator to obtain high-temperature, high-pressure refrigerant, providing power for the refrigerant to flow in the pipeline. The first condenser 330 can be a fin-type condenser or other types of condensers. The first condenser 330 is used to exchange heat between the high-temperature, high-pressure refrigerant and the air, releasing the heat in the refrigerant into the air, and obtaining high-pressure, low-temperature refrigerant that flows into the first evaporator, while the high-temperature air is discharged to the outside through the first fan 340. The first fan 340 can be an axial flow fan or other types of fans. Since the outlet air temperature is higher than the indoor temperature, an air duct can be set at the air outlet to discharge the high-temperature air (harmful heat) to the outside without exchanging heat with the indoor environment.

[0070] Of course, the cold water production system 300 can also include other structures such as a first gas-liquid separator 360 and a first filter 370, wherein the first gas-liquid separator 360 is used to separate the gas and liquid of the refrigerant flowing into the first compressor 320 to extend the service life of the first compressor.

[0071] In this way, the cold water production system 300 can be used to produce cold water for use in cooling the equipment to be cooled and for use in heat exchange in the second heat exchanger 210 .

[0072] In an optional embodiment, the cold water production system 300 further includes a first electronic expansion valve 351, a first pressure sensor 352, a second pressure sensor 353, a first switch 354, a second switch 355, a first temperature sensing package 356, a second temperature sensing package 357 and a first controller (not shown in the figure);

[0073] The first electronic expansion valve 351 is provided on the pipeline between the first evaporator and the first condenser 330; the first pressure sensor 352, the first switch 354, and the first temperature-sensing package 356 are all provided on the pipeline between the first condenser 330 and the first compressor 320; the second pressure sensor 353, the second switch 355, and the second temperature-sensing package 357 are all provided on the pipeline between the first compressor 320 and the first evaporator;

[0074] The first compressor 320, the first fan 340, the first electronic expansion valve 351, the first pressure sensor 352, the second pressure sensor 353, the first switch 354, the second switch 355, the first temperature sensing package 356 and the second temperature sensing package 357 are all electrically connected to the first controller;

[0075] The first controller is used to dynamically control the frequency of the first compressor 320, the frequency of the first fan 340 and the opening of the first electronic expansion valve 351 based on the temperature information collected by the first temperature sensing package 356 and the second temperature sensing package 357, and dynamically control the opening of the first switch 354 and the second switch 355 based on the pressure information collected by the first pressure sensor 352 and the second pressure sensor 353.

[0076] Specifically, the number of the first electronic expansion valve 351, the first pressure sensor 352, the second pressure sensor 353, the first switch 354, the second switch 355, the first temperature-sensing package 356, and the second temperature-sensing package 357 can be one or more, and the embodiment of the present application does not specifically limit this. Among them, the first electronic expansion valve 351 is used to control the flow rate of the refrigerant. The first pressure sensor 352 is used to measure the pressure at the suction end of the first compressor 320. The second pressure sensor 353 is used to measure the pressure at the discharge end of the first compressor 320. The first switch 354 is used to control the amount of refrigerant flowing into the first compressor 320. The second switch 355 is used to control the amount of refrigerant flowing out of the first compressor 320. The first temperature-sensing package 356 is used to measure the temperature at the suction end of the first compressor 320. The second temperature-sensing package 357 is used to measure the temperature at the discharge end of the first compressor 320.

[0077] In this embodiment, since the first compressor 320, the first fan 340, the first electronic expansion valve 351, the first pressure sensor 352, the second pressure sensor 353, the first switch 354, the second switch 355, the first temperature sensing package 356 and the second temperature sensing package 357 are all electrically connected to the first controller, the first controller can dynamically control the frequency of the first compressor 320, the frequency of the first fan 340 and the opening of the first electronic expansion valve 351 according to the temperature information collected by the first temperature sensing package 356 and the second temperature sensing package 357 to ensure energy saving and stable operation of the system; and the first controller can also dynamically control the opening of the first switch 354 and the second switch 355 according to the pressure information collected by the first pressure sensor 352 and the second pressure sensor 353 to ensure that the system operates within a safe pressure range.

[0078] In an alternative embodiment, please continue to see Figure 1, the second heat exchanger 210 is a second condenser, and the cold air production system 200 further includes a second evaporator 220, a second compressor 230 and a second fan 240;

[0079] The second condenser, the second evaporator 220 and the second compressor 230 are connected in sequence through pipelines to form a second refrigerant circulation pipeline;

[0080] When the second compressor 230 is started, the refrigerant on the second refrigerant circulation pipeline releases heat through the second condenser and absorbs heat through the second evaporator 220;

[0081] The second fan 240 is disposed opposite to the second evaporator 220 , and is used to blow the cold air after absorbing heat in the second evaporator 220 into the target space.

[0082] Specifically, the second evaporator 220 can exchange heat between the low-temperature, low-pressure refrigerant flowing out of the second condenser and the air, absorb the heat in the air into the refrigerant, and obtain high-temperature, low-pressure refrigerant that flows into the second compressor 230, while the low-temperature air is blown into the room through the second fan 240. The second compressor 230 is used to compress the high-temperature, low-pressure refrigerant flowing out of the second evaporator 220 to obtain high-temperature, high-pressure refrigerant, providing power for the refrigerant to flow in the pipeline. The second condenser can be a fin-type condenser or other types of condensers. The second condenser is used to exchange heat between the high-temperature, high-pressure refrigerant and the cooling water in the liquid cooling circulation system 100, and release the heat in the refrigerant into the cooling water.

[0083] Of course, the cold air production system 200 may also include other structures such as a second gas-liquid separator 260 and a second filter, wherein the second gas-liquid separator 260 is used to separate the gas and liquid of the refrigerant flowing into the second compressor 230 to extend the service life of the second compressor.

[0084] In this way, the cold air produced by the cold air production system 200 can be used to adjust the indoor temperature, providing better cooling conditions for the cold water production system 300, thereby significantly improving the cooling capacity of the cold water production system 300 and reducing energy consumption.

[0085] In an optional embodiment, the cold air production system 200 further includes a second electronic expansion valve 251, a third pressure sensor 252, a third switch 253, a fourth switch 254, a third temperature sensing package 255, a fourth temperature sensing package 256 and a second controller (not shown in the figure);

[0086] The second electronic expansion valve 251 is provided on the pipeline between the second condenser and the second evaporator 220. The third pressure sensor 252, the third switch 253 and the third temperature-sensing package 255 are all provided on the pipeline between the second evaporator 220 and the second compressor 230. The fourth switch 254 and the fourth temperature-sensing package 256 are both provided on the pipeline between the second compressor 230 and the second condenser.

[0087] The second compressor 230, the second fan 240, the second electronic expansion valve 251, the third pressure sensor 252, the third switch 253, the fourth switch 254, the third temperature-sensing package 255 and the fourth temperature-sensing package 256 are all electrically connected to the second controller;

[0088] The second controller is used to dynamically control the frequency of the second compressor 230, the frequency of the second fan 240 and the opening of the second electronic expansion valve 251 according to the temperature information collected by the third temperature sensing package 255 and the fourth temperature sensing package 256, and dynamically control the opening of the third switch 253 and the fourth switch 254 according to the pressure information collected by the third pressure sensor 252.

[0089] Specifically, the number of the second electronic expansion valve 251, the third pressure sensor 252, the third switch 253, the fourth switch 254, the third temperature-sensing package 255, and the fourth temperature-sensing package 256 can be one or more, and the embodiment of the present application does not specifically limit it. Among them, the second electronic expansion valve 251 is used to control the flow rate of the refrigerant. The third pressure sensor 252 is used to measure the pressure at the suction end of the second compressor 230. The third switch 253 is used to control the amount of refrigerant flowing into the second compressor 230. The fourth switch 254 is used to control the amount of refrigerant flowing out of the second compressor 230. The third temperature-sensing package 255 is used to measure the temperature at the suction end of the second compressor 230. The fourth temperature-sensing package 256 is used to measure the temperature at the exhaust end of the second compressor 230.

[0090] In this embodiment, since the second compressor 230, the second fan 240, the second electronic expansion valve 251, the third pressure sensor 252, the third switch 253, the fourth switch 254, the third temperature-sensing bag 255 and the fourth temperature-sensing bag 256 are all electrically connected to the second controller, the second controller can dynamically control the frequency of the second compressor 230, the frequency of the second fan 240 and the opening of the second electronic expansion valve 251 according to the temperature information collected by the third temperature-sensing bag 255 and the fourth temperature-sensing bag 256 to ensure energy saving and stable operation of the system; and the second controller can also dynamically control the opening of the third switch 253 and the fourth switch 254 according to the pressure information collected by the third pressure sensor 252 to ensure that the system operates within a safe pressure range.

[0091] See also Figure 2 , Figure 2 A flow chart of a liquid cooling unit control method provided in an embodiment of the present application. The liquid cooling unit control method is applied to Figure 1 The liquid cooling unit shown in FIG. 1 may include the following steps:

[0092] Step S201: When both the cold air production system and the cold water production system in the liquid cooling unit are started, the refrigerant in the cold water production system is heat exchanged with the coolant in the liquid cooling circulation system through the first heat exchanger to cool the coolant in the liquid cooling circulation system and then dissipate heat from at least one device to be cooled that flows through a third liquid cooling pipeline; and the refrigerant in the cold air production system is heat exchanged with the coolant in the liquid cooling circulation system through the second heat exchanger to cool the indoor temperature of the target space after cooling the refrigerant in the cold air production system.

[0093] Step S202: When only the cold water production system is started in the liquid cooling unit, heat is exchanged between the refrigerant in the cold water production system and the coolant in the liquid cooling circulation system through the first heat exchanger, so as to cool the coolant in the liquid cooling circulation system and then dissipate heat to the equipment to be cooled that flows through at least one third liquid cooling pipeline.

[0094] Step S203: When only the cold air production system is started in the liquid cooling unit, the refrigerant in the cold air production system is heat exchanged with the coolant in the liquid cooling circulation system through the second heat exchanger to cool the refrigerant in the cold air production system and then cool the indoor temperature of the target space.

[0095] Specifically, the cold air production system and the cold water production system in the liquid cooling unit can be controlled separately and independently. When both the cold air production system and the cold water production system are started, the refrigerant in the cold water production system can be heat-exchanged with the coolant in the liquid cooling circulation system through the first heat exchanger to dissipate heat from the device to be cooled. At the same time, the refrigerant in the cold air production system can be heat-exchanged with the coolant in the liquid cooling circulation system through the second heat exchanger to cool the indoor temperature of the target space. When the cold water production system is started alone, the refrigerant in the cold water production system can be heat-exchanged with the coolant in the liquid cooling circulation system through the first heat exchanger to produce cold water to dissipate heat from the device to be cooled. When the cold air production system is started alone, the refrigerant in the cold air production system can be heat-exchanged with the coolant in the liquid cooling circulation system through the second heat exchanger to cool the refrigerant in the cold air production system. The low-temperature refrigerant is then used to cool the indoor temperature of the target space.

[0096] In this way, when the cold air production system and the cold water production system are used together, the cold air production system is used to adjust the indoor temperature, providing better cooling conditions for the cold water production system, thereby significantly improving the cooling capacity of the cold water production system and reducing energy consumption. In addition, the low-temperature coolant produced by the cold water production system can not only be used to cool high-temperature equipment, but can also be heat-exchanged with the refrigerant of the cold air production system through a second heat exchanger, forming a multi-stage utilization of the coolant, maximizing the cooling potential of the coolant, and further improving energy utilization. In addition, when the cold air production system or the cold water production system is used alone, the liquid cooling unit can be used to cool the room or dissipate heat from high-temperature objects to meet the diverse needs in complex scenarios.

[0097] In an optional embodiment, the first heat exchanger is a first evaporator, and the cold water production system further includes a first compressor, a first fan, a first electronic expansion valve, a first pressure sensor, a second pressure sensor, a first switch, a second switch, a first temperature sensing package, a second temperature sensing package, and a first controller; the method further includes:

[0098] The first controller dynamically controls the frequency of the first compressor, the frequency of the first fan, and the opening of the first electronic expansion valve based on the temperature information collected by the first temperature sensing package and the second temperature sensing package, and dynamically controls the opening of the first switch and the second switch based on the pressure information collected by the first pressure sensor and the second pressure sensor.

[0099] In this way, when the cold water production system starts running, the first controller can dynamically control the frequency of the first compressor, the frequency of the first fan and the opening of the first electronic expansion valve according to the temperature information collected by the first temperature sensing package and the second temperature sensing package to ensure energy saving and stable operation of the system; and the first controller can also dynamically control the opening of the first switch and the second switch according to the pressure information collected by the first pressure sensor and the second pressure sensor to ensure that the system operates within a safe pressure range.

[0100] Through the above method, the first controller can combine the Proportional Integral Differential (PID) algorithm and dynamic adjustment technology to flexibly adjust the operating parameters according to the actual load demand of the unit, avoid energy waste, and improve overall energy efficiency.

[0101] In an optional embodiment, the second heat exchanger is a second condenser, and the cold air production system further includes a second compressor, a second fan, a second electronic expansion valve, a third pressure sensor, a third switch, a fourth switch, a third temperature sensing package, a fourth temperature sensing package, and a second controller; the method further includes:

[0102] The second controller dynamically controls the frequency of the second compressor, the frequency of the second fan, and the opening of the second electronic expansion valve based on the temperature information collected by the third temperature sensing package and the fourth temperature sensing package, and dynamically controls the opening of the third switch and the fourth switch based on the pressure information collected by the third pressure sensor.

[0103] In this way, when the cold air production system starts running, the second controller can dynamically control the frequency of the second compressor, the frequency of the second fan and the opening of the second electronic expansion valve according to the temperature information collected by the third temperature sensing package and the fourth temperature sensing package to ensure energy saving and stable operation of the system; and the second controller can also dynamically control the opening of the third switch and the fourth switch according to the pressure information collected by the third pressure sensor to ensure that the system operates within a safe pressure range.

[0104] Through the above method, the second controller can combine PID algorithm and dynamic adjustment technology to flexibly adjust operating parameters according to the actual load demand of the unit, avoid energy waste, and improve overall energy efficiency.

[0105] The liquid cooling unit provided in the embodiment of the present application has the following beneficial effects:

[0106] In terms of energy saving: through the collaborative optimization design of the two systems, the cold air production system adjusts the indoor temperature to provide better cooling conditions for the cold water production system, significantly improving the cooling capacity of the cold water production system, thereby reducing energy consumption; moreover, both the cold air production system and the cold water production system adopt variable frequency technology, combined with PID algorithm and dynamic adjustment technology, which can flexibly adjust the operating parameters according to the actual load demand, avoid energy waste, and improve overall energy efficiency; in addition, the cooling water of the cold water production system is not only used to cool high-temperature equipment (such as energy storage batteries, high-temperature equipment in the computer room, etc.), but also through the shell and tube heat exchanger (the second heat exchanger mentioned above) and the refrigerant of the cold air production system for heat exchange, forming a multi-stage utilization of cooling water, maximizing the cooling potential of cooling water, and further improving energy utilization.

[0107] In terms of environmental adaptability, the cold air and cold water systems can operate independently, and through flexible switching of the water flow switch and air duct on the shell-and-tube heat exchanger, independent operation and mode switching between the systems are achieved. This design can meet the needs of various working conditions, such as the cold air system operating alone to adjust the indoor temperature, or the cold water system operating alone to cool high-temperature equipment. In addition, the outlet temperature of the cold water system is higher than the indoor temperature and is discharged to the outside through the air duct, avoiding heat loss when the cold air circulates indoors, thereby improving the system's adaptability and operating efficiency.

[0108] In terms of stable operation, both the cold air and cold water production systems are equipped with monitoring and protection devices such as high and low pressure sensors, high and low pressure switches, and suction and exhaust temperature sensors. These devices monitor the unit's operating status in real time and ensure the system operates within a safe pressure range. The cold air production system also incorporates a high-pressure sensor in the exhaust pipe, further enhancing monitoring accuracy and protection capabilities.

[0109] In terms of intelligent management: the addition of remote monitoring function has improved the management efficiency of the unit, and can realize remote parameter adjustment, operation status monitoring and fault warning, which is convenient for maintenance and management; and through the application of PID algorithm, temperature control is made more precise, and compressor parameters can be adjusted in real time to meet the temperature requirements under different working conditions.

[0110] An embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the liquid cooling unit control method provided in any of the aforementioned method embodiments is implemented.

[0111] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0112] Through the description of the above embodiments, those skilled in the art will clearly understand that each embodiment can be implemented using software plus a general hardware platform, or of course, hardware. Based on this understanding, the essence of the above technical solution, or the portion that contributes to the relevant technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, or an optical disk, and includes a number of instructions for causing a computer device (such as a personal computer, server, or network device) to execute the methods described in each embodiment or certain portions of the embodiments.

[0113] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0114] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A liquid cooling unit, characterized in that: The liquid cooling unit includes: a liquid cooling circulation system, a cold air production system and a cold water production system; Wherein, the liquid cooling circulation system includes a first liquid cooling pipeline, a second liquid cooling pipeline and at least one third liquid cooling pipeline arranged between the first liquid cooling pipeline and the second liquid cooling pipeline; The cold water production system includes a first heat exchanger, and the cold air production system includes a second heat exchanger, the liquid outlet of the first heat exchanger is connected to the liquid inlet of the second heat exchanger through the first liquid cooling pipeline, and the liquid inlet of the first heat exchanger is connected to the liquid outlet of the second heat exchanger through the second liquid cooling pipeline; The first heat exchanger is used to exchange heat between the refrigerant in the cold water production system and the coolant in the liquid cooling circulation system, so as to cool the coolant in the liquid cooling circulation system and then dissipate heat to the equipment to be cooled that flows through the at least one third liquid cooling pipeline; the second heat exchanger is used to exchange heat between the refrigerant in the cold air production system and the coolant in the liquid cooling circulation system, so as to cool the indoor temperature of the target space after cooling the refrigerant in the cold air production system; Wherein, the liquid cooling circulation system further includes a fourth liquid cooling pipeline and a fifth liquid cooling pipeline; The first liquid cooling pipeline is provided with a first connection point, the fourth liquid cooling pipeline is connected to the first liquid cooling pipeline through the first connection point, and the fourth liquid cooling pipeline is used to provide coolant for the liquid cooling circulation system; A second connection point is provided on the second liquid cooling pipeline, and the fifth liquid cooling pipeline is connected to the second liquid cooling pipeline through the second connection point. The fifth liquid cooling pipeline is used to recover the coolant in the liquid cooling circulation system.

2. The liquid cooling unit according to claim 1, characterized in that: The liquid cooling circulation system also includes a water flow switch; Wherein, the water flow switch is arranged between the first liquid cooling pipeline and the second liquid cooling pipeline, and the water flow switch is located downstream of the first connection point and the second connection point.

3. The liquid cooling unit according to claim 1, characterized in that: The first heat exchanger is a first evaporator, and the cold water production system further includes a first compressor, a first condenser and a first fan; Wherein, the first evaporator, the first compressor and the first condenser are connected in sequence through pipelines to form a first refrigerant circulation pipeline; When the first compressor is started, the refrigerant in the first refrigerant circulation pipeline absorbs heat through the first evaporator and releases heat through the first condenser; The first fan is arranged opposite to the first condenser, and is used to discharge heat released by the first condenser from the target space.

4. The liquid cooling unit according to claim 3, characterized in that: The cold water production system further includes a first electronic expansion valve, a first pressure sensor, a second pressure sensor, a first switch, a second switch, a first temperature sensing package, a second temperature sensing package and a first controller; The first electronic expansion valve is provided on the pipeline between the first evaporator and the first condenser, the first pressure sensor, the first switch and the first temperature-sensitive package are all provided on the pipeline between the first condenser and the first compressor, and the second pressure sensor, the second switch and the second temperature-sensitive package are all provided on the pipeline between the first compressor and the first evaporator. The first compressor, the first fan, the first electronic expansion valve, the first pressure sensor, the second pressure sensor, the first switch, the second switch, the first temperature-sensing package, and the second temperature-sensing package are all electrically connected to the first controller; The first controller is used to dynamically control the frequency of the first compressor, the frequency of the first fan, and the opening of the first electronic expansion valve based on temperature information collected by the first temperature sensing package and the second temperature sensing package, and dynamically control the opening of the first switch and the second switch based on pressure information collected by the first pressure sensor and the second pressure sensor.

5. The liquid cooling unit according to claim 1, characterized in that: The second heat exchanger is a second condenser, and the cold air production system further includes a second evaporator, a second compressor and a second fan; Wherein, the second condenser, the second evaporator and the second compressor are connected in sequence through pipelines to form a second refrigerant circulation pipeline; When the second compressor is started, the refrigerant in the second refrigerant circulation pipeline releases heat through the second condenser and absorbs heat through the second evaporator; The second fan is arranged opposite to the second evaporator, and is used to blow the cold air after absorbing heat in the second evaporator into the target space.

6. The liquid cooling unit according to claim 5, characterized in that: The cold air production system further includes a second electronic expansion valve, a third pressure sensor, a third switch, a fourth switch, a third temperature sensing package, a fourth temperature sensing package and a second controller; The second electronic expansion valve is provided on the pipeline between the second condenser and the second evaporator, the third pressure sensor, the third switch and the third temperature-sensing package are all provided on the pipeline between the second evaporator and the second compressor, and the fourth switch and the fourth temperature-sensing package are both provided on the pipeline between the second compressor and the second condenser. The second compressor, the second fan, the second electronic expansion valve, the third pressure sensor, the third switch, the fourth switch, the third temperature-sensing package, and the fourth temperature-sensing package are all electrically connected to the second controller; The second controller is used to dynamically control the frequency of the second compressor, the frequency of the second fan and the opening of the second electronic expansion valve according to the temperature information collected by the third temperature sensing package and the fourth temperature sensing package, and dynamically control the opening of the third switch and the fourth switch according to the pressure information collected by the third pressure sensor.

7. A liquid cooling unit control method, characterized in that: Applied to the liquid cooling unit according to any one of claims 1 to 6, the liquid cooling unit control method comprises: When both the cold air production system and the cold water production system in the liquid cooling unit are started, heat is exchanged between the refrigerant in the cold water production system and the coolant in the liquid cooling circulation system through the first heat exchanger, so as to cool the coolant in the liquid cooling circulation system and then dissipate heat from at least one device to be cooled that flows through the third liquid cooling pipeline; and heat is exchanged between the refrigerant in the cold air production system and the coolant in the liquid cooling circulation system through the second heat exchanger, so as to cool the indoor temperature of the target space after cooling the refrigerant in the cold air production system; When only the cold water production system in the liquid cooling unit is started, heat is exchanged between the refrigerant in the cold water production system and the coolant in the liquid cooling circulation system through the first heat exchanger, so as to cool the coolant in the liquid cooling circulation system and then dissipate heat to the equipment to be cooled that flows through the at least one third liquid cooling pipeline; When only the cold air production system is started in the liquid cooling unit, the refrigerant in the cold air production system is heat exchanged with the coolant in the liquid cooling circulation system through the second heat exchanger to cool the refrigerant in the cold air production system and then cool the indoor temperature of the target space.

8. The liquid cooling unit control method according to claim 7, characterized in that: The first heat exchanger is a first evaporator, and the cold water production system further includes a first compressor, a first fan, a first electronic expansion valve, a first pressure sensor, a second pressure sensor, a first switch, a second switch, a first temperature sensing package, a second temperature sensing package, and a first controller; The method further comprises: The first controller dynamically controls the frequency of the first compressor, the frequency of the first fan, and the opening of the first electronic expansion valve based on temperature information collected by the first temperature sensing package and the second temperature sensing package, and dynamically controls the opening of the first switch and the second switch based on pressure information collected by the first pressure sensor and the second pressure sensor.

9. The liquid cooling unit control method according to claim 7, characterized in that: The second heat exchanger is a second condenser, and the cold air production system further includes a second compressor, a second fan, a second electronic expansion valve, a third pressure sensor, a third switch, a fourth switch, a third temperature sensing package, a fourth temperature sensing package, and a second controller; the method further includes: The second controller dynamically controls the frequency of the second compressor, the frequency of the second fan, and the opening of the second electronic expansion valve based on the temperature information collected by the third temperature sensing package and the fourth temperature sensing package, and dynamically controls the opening of the third switch and the fourth switch based on the pressure information collected by the third pressure sensor.

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