A cooling control method, apparatus and cooling system

Abstract

This invention discloses a cooling control method, apparatus, and cooling system. The cooling system is used to cool a refrigerant and includes at least two cooling modules. The method includes: determining which cooling module to activate based on the outdoor ambient temperature; and adjusting the refrigerant flow rate delivered to the cooling module based on the target temperature and return air temperature during the module's operation. This invention determines the cooling module to activate based on the outdoor ambient temperature, achieving adaptive switching of the cooling mode. While meeting cooling requirements, it minimizes system energy consumption, avoids continuous compressor operation, and extends product lifespan. During the cooling module's operation, adjusting the refrigerant flow rate based on the target temperature and return air temperature enables adaptive adjustment of the refrigerant flow rate, achieving maximum energy savings while meeting cooling requirements.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation and cooling technology, and more specifically, to a cooling control method, device, and cooling system. Background Technology

[0002] With the advent of the information age, all kinds of information are experiencing explosive growth. The processing and storage of this information require a large number of servers. In order to ensure information stability and security, the heat dissipation of servers in the data center has become an urgent task.

[0003] Currently, data center air conditioners all use vapor compression refrigeration for heat dissipation to ensure that the servers in the data center are in a suitable temperature state. However, because the servers in the data center are constantly in a state of heat, the compressor of the refrigeration system needs to be kept running all the time, which consumes a lot of energy and reduces the service life of the entire machine.

[0004] There is currently no effective solution to the problem that existing technologies require the compressor of the computer room air conditioner to be kept running continuously, resulting in high energy consumption and reduced service life of the entire unit. Summary of the Invention

[0005] This invention provides a cooling control method, device, and cooling system to at least solve the problems in the prior art where the compressor of a computer room air conditioner needs to be kept running continuously, resulting in high energy consumption and reduced service life of the entire unit.

[0006] To address the aforementioned technical problems, embodiments of the present invention provide a cooling control method. The cooling system is used to cool a refrigerant, and the cooling system includes at least two cooling modules. The cooling control method includes:

[0007] The cooling module to be activated is determined based on the outdoor ambient temperature;

[0008] During the operation of the cooling module, the flow rate of the refrigerant supplied to the cooling module is adjusted according to the target temperature and the return air temperature.

[0009] Optionally, the cooling modules to be activated based on the outdoor ambient temperature include:

[0010] Based on the range of outdoor ambient temperature, determine the cooling module to be activated; or,

[0011] Based on the outdoor ambient temperature and the set refrigerant temperature at the inlet, the cooling module to be activated is determined, wherein the refrigerant is delivered to each cooling module through the inlet.

[0012] Optionally, the cooling system includes a natural cooling module and a compressor cooling module; the cooling module to be activated is determined based on the outdoor ambient temperature and the set refrigerant temperature at the inlet, including:

[0013] Calculate the difference between the set refrigerant temperature at the inlet and the outdoor ambient temperature;

[0014] If the difference is greater than or equal to the first preset threshold, then it is determined that only the natural cooling module will be activated;

[0015] If the difference is greater than or equal to the second preset threshold and less than the first preset threshold, then it is determined that the natural cooling module and the compressor cooling module are started simultaneously.

[0016] If the difference is less than the second preset threshold, then it is determined that only the compressor cooling module will be activated.

[0017] Optionally, the cooling system includes: a drive component for delivering the refrigerant to each cooling module;

[0018] Valves are installed on the connecting pipes between the drive component and each cooling module. When any cooling module needs to be started, the valve corresponding to that cooling module is opened.

[0019] Optionally, when only the natural cooling module is activated, during the operation of the cooling module, the flow rate of the refrigerant supplied to the cooling module is adjusted according to the target temperature and the return air temperature, including:

[0020] If the target temperature is greater than or equal to the return air temperature, the output of the drive component is reduced to reduce the flow rate of refrigerant delivered to the natural cooling module.

[0021] If the target temperature is lower than the return air temperature, the output of the drive component is increased to increase the refrigerant flow rate delivered to the natural cooling module.

[0022] Optionally, when only the compressor cooling module is activated, during the operation of the cooling module, the flow rate of the refrigerant supplied to the cooling module is adjusted according to the target temperature and return air temperature, including:

[0023] If the target temperature is greater than or equal to the return air temperature, the output of the drive component is reduced to reduce the refrigerant flow rate delivered to the compressor cooling module, and the compressor frequency is reduced at the same time.

[0024] If the target temperature is lower than the return air temperature, the output of the drive component is increased to increase the refrigerant flow rate delivered to the compressor cooling module, while the compressor frequency is increased.

[0025] Optionally, when both the natural cooling module and the compressor cooling module are activated simultaneously, during the operation of the cooling module, the flow rate of the refrigerant supplied to the cooling module is adjusted according to the target temperature and the return air temperature, including:

[0026] If the target temperature is greater than or equal to the return air temperature, then increase the opening of the first valve, decrease the opening of the second valve, and decrease the compressor frequency.

[0027] If the target temperature is lower than the return air temperature, then reduce the opening of the first valve, increase the opening of the second valve, and increase the compressor frequency.

[0028] The first valve is installed on the connecting pipe between the drive component and the natural cooling module, and the second valve is installed on the connecting pipe between the drive component and the compressor cooling module.

[0029] Optionally, after reducing the opening of the second valve and reducing the compressor frequency, the method further includes: when the difference between the actual refrigerant temperature at the inlet and the outdoor ambient temperature is greater than or equal to a first preset threshold, closing the second valve and the compressor to shut down the compressor cooling module.

[0030] After reducing the opening of the first valve, the method further includes: when the difference between the actual refrigerant temperature at the inlet and the outdoor ambient temperature is less than a second preset threshold, closing the first valve to shut down the natural cooling module, wherein the refrigerant is delivered to the natural cooling module and / or the compressor cooling module through the inlet.

[0031] Optionally, the cooling system includes a natural cooling module and a compressor cooling module; when both the natural cooling module and the compressor cooling module are activated simultaneously, it further includes:

[0032] Monitor the actual refrigerant temperature at the outlet, wherein the refrigerant flowing from the natural cooling module and / or the compressor cooling module flows out of the cooling system through the outlet;

[0033] If the actual refrigerant temperature at the outlet is lower than the outdoor ambient temperature, then the natural cooling module is shut down.

[0034] This invention also provides a cooling control device. The cooling system is used to cool a refrigerant. The cooling system includes at least two cooling modules. The cooling control device includes:

[0035] The determination module is used to determine which cooling module should be activated based on the outdoor ambient temperature.

[0036] An adjustment module is used to adjust the flow rate of refrigerant delivered to the cooling module according to the target temperature and return air temperature during the operation of the cooling module.

[0037] This invention also provides a cooling system, including the cooling control device described in this invention.

[0038] This invention also provides a non-volatile computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the method described in this invention.

[0039] By applying the technical solution of this invention, the cooling module to be activated is determined based on the outdoor ambient temperature, enabling adaptive switching of the cooling mode. This minimizes system energy consumption while meeting cooling requirements, avoids continuous compressor operation, and extends product lifespan. During the operation of the cooling module, the refrigerant flow rate supplied to the module is adjusted according to the target temperature and return air temperature, allowing for adaptive refrigerant flow control and maximizing energy savings while meeting cooling needs. Attached Figure Description

[0040] Figure 1 This is a flowchart of the cooling control method provided in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of a cooling system compatible with both natural cooling and compressor cooling provided in an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the process for determining the cooling method during system startup provided in an embodiment of the present invention;

[0043] Figure 4 This is a structural block diagram of the cooling control device provided in an embodiment of the present invention;

[0044] Explanation of reference numerals in the attached figures:

[0045] Liquid supply module 10, refrigeration module 20, compressor 1, condenser 2, condenser fan 3, throttling device 4, evaporator 5, gas-liquid separator 6, high-pressure switch 61, low-pressure switch 62, exhaust temperature sensor 63, heat exchanger 7, automatic exhaust valve 8, liquid supply pump 9, first electric valve 11, second electric valve 12, temperature and humidity sensor 71, flow regulating valve 81, temperature sensor 82, flow meter 83, pressure sensor 84, overflow valve 85, fine filter 86, liquid discharge ball valve 87, ball valve 88, expansion tank 91. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0047] It should be noted that the terms "first," "second," etc., used in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0048] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0049] The optional embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0050] The cooling system described in this embodiment is used to cool a refrigerant (e.g., cooling water) and supply the cooled refrigerant to the user side (e.g., a computer room) to meet the user's heat dissipation or cooling needs. For example, on the user side, through circulating supply and return air, the air exchanges heat with the cooled refrigerant and is then sent into the room, so that the indoor temperature reaches the required temperature.

[0051] The cooling system includes at least two types of cooling modules, one of which is a compressor cooling module. The other cooling modules consume less energy than the compressor cooling module. Different types of cooling modules correspond to different cooling methods. For example, the cooling system includes a natural cooling module and a compressor cooling module. The natural cooling module uses low-temperature outdoor air to exchange heat with the refrigerant, thus cooling the refrigerant; the compressor cooling module uses low-temperature, low-pressure refrigerant in the evaporator to exchange heat with the refrigerant, thus cooling the refrigerant.

[0052] This embodiment provides a cooling control method. Figure 1 This is a flowchart of the cooling control method provided in an embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps:

[0053] S101 determines which cooling module to activate based on the outdoor ambient temperature.

[0054] S102, during the operation of the cooling module, adjusts the flow rate of the refrigerant supplied to the cooling module according to the target temperature and return air temperature.

[0055] The target temperature refers to the set temperature on the user's side, i.e., the temperature required by the user. The cooling capacity can be changed by adjusting the flow rate of the refrigerant supplied to the cooling module.

[0056] This embodiment determines which cooling module to activate based on the outdoor ambient temperature, enabling adaptive switching of cooling methods. While meeting cooling requirements, it minimizes system energy consumption, avoids continuous compressor operation, and extends product lifespan. During cooling module operation, the refrigerant flow rate delivered to the module is adjusted based on the target temperature and return air temperature, allowing for adaptive refrigerant flow control and maximizing energy savings while meeting cooling demands.

[0057] In one implementation, determining the cooling module to be activated based on the outdoor ambient temperature includes:

[0058] Determine which cooling module to activate based on the range of outdoor ambient temperature; or,

[0059] Based on the outdoor ambient temperature and the set refrigerant temperature at the inlet, the cooling modules to be activated are determined, with the refrigerant being delivered to each cooling module through the inlet.

[0060] For example, if the outdoor ambient temperature is less than 'a', then only the natural cooling module will be activated; if the ambient temperature is greater than or equal to 'a' and less than 'b', then both the natural cooling module and the compressor cooling module will be activated simultaneously; if the outdoor ambient temperature is greater than or equal to 'b', then only the compressor cooling module will be activated. 'a' and 'b' can be set according to the actual situation.

[0061] The set refrigerant temperature at the inlet refers to the set temperature of the refrigerant delivered to the cooling module, which can be preset according to actual conditions.

[0062] Specifically, taking a cooling system including a natural cooling module and a compressor cooling module as an example, the cooling module to be activated is determined based on the outdoor ambient temperature and the set refrigerant temperature at the inlet. This includes calculating the difference between the set refrigerant temperature at the inlet and the outdoor ambient temperature, and determining the specific cooling method based on the difference. The details are as follows:

[0063] (1) If the difference is greater than or equal to the first preset threshold, then it is determined that only the natural cooling module is activated.

[0064] When the outdoor temperature is extremely low, the compressor can be left running, and the refrigerant that meets the cooling requirements of the user can be provided through natural cooling. This can significantly reduce energy consumption and avoid the compressor operating at extremely low temperatures, thus extending the product's lifespan.

[0065] (2) If the difference is greater than or equal to the second preset threshold and less than the first preset threshold, then the natural cooling module and the compressor cooling module are started simultaneously.

[0066] When the outdoor temperature is low, the compressor can run at a low frequency, and by combining natural cooling and compressor cooling, it can provide refrigerant that meets the cooling requirements of the user side, thereby reducing energy consumption.

[0067] (3) If the difference is less than the second preset threshold, then it is determined that only the compressor cooling module is started.

[0068] When the outdoor temperature is high, the compressor is started directly, and the refrigerant that meets the user's cooling requirements is provided through the compressor alone.

[0069] The first and second preset thresholds can be set according to actual conditions. For example, the first preset threshold can be set to 10℃ and the second preset threshold can be set to 5℃. By setting appropriate values ​​for the first and second preset thresholds, natural cooling can be used as much as possible while meeting the cooling requirements, thus avoiding the need to start the compressor and achieving energy saving.

[0070] This implementation method, based on the outdoor ambient temperature and the set refrigerant temperature at the inlet, can adaptively switch the cooling mode during system startup and operation. While meeting the cooling requirements, it minimizes system energy consumption, avoids continuous compressor operation, and extends product lifespan.

[0071] In one optional embodiment, the cooling system includes a drive component for delivering refrigerant to each cooling module. Valves are installed on the connecting pipes between the drive component and each cooling module; when any cooling module needs to be started, the corresponding valve is opened. For example, a first valve is installed on the connecting pipe between the drive component and the natural cooling module; when the natural cooling module needs to be started, the first valve is opened. A second valve is installed on the connecting pipe between the drive component and the compressor cooling module; when the compressor cooling module needs to be started, the second valve is opened. The drive component can be a liquid supply pump. The valves can be solenoid valves, electric ball valves, or other valves with on / off control functions. This embodiment uses valves to achieve the opening and closing control of each cooling module.

[0072] Specifically, if only the natural cooling module is activated, the first valve is opened and the second valve is closed. If both the natural cooling module and the compressor cooling module are activated simultaneously, both the first and second valves are opened simultaneously. If only the compressor cooling module is activated, the first valve is closed and the second valve is opened. It should be noted that, in addition to controlling the first and second valves mentioned above, if the natural cooling module is activated, the corresponding fan also needs to be turned on; if the compressor cooling module is activated, the compressor and the corresponding fan also need to be turned on.

[0073] In one implementation, when only the natural cooling module is activated, adjusting the refrigerant flow rate supplied to the cooling module based on the target temperature and return air temperature during the module's operation includes:

[0074] If the target temperature is greater than or equal to the return air temperature, it indicates that the system has excessive cooling capacity. In this case, the output of the drive components is reduced to reduce the flow of refrigerant delivered to the natural cooling module, thereby ensuring energy saving while meeting the cooling requirements.

[0075] If the target temperature is lower than the return air temperature, it indicates that the system's cooling capacity is insufficient. In this case, the output of the drive components will be increased to increase the flow of refrigerant delivered to the natural cooling module, ensuring that the cooling demand is met.

[0076] In one embodiment, when only the compressor cooling module is activated, adjusting the refrigerant flow rate delivered to the cooling module based on the target temperature and return air temperature during the module's operation includes:

[0077] If the target temperature is greater than or equal to the return air temperature, it indicates that the system has excess cooling capacity. In this case, the output of the drive components is reduced to reduce the flow of refrigerant delivered to the compressor cooling module, and the compressor frequency is reduced to ensure energy saving while meeting the cooling requirements.

[0078] If the target temperature is lower than the return air temperature, it indicates that the system's cooling capacity is insufficient. Therefore, the output of the drive components should be increased to increase the refrigerant flow to the compressor cooling module, and the compressor frequency should be increased to ensure that the cooling demand is met.

[0079] In one embodiment, when both the natural cooling module and the compressor cooling module are activated simultaneously, during the operation of the cooling module, the flow rate of the refrigerant supplied to the cooling module is adjusted according to the target temperature and the return air temperature, including:

[0080] If the target temperature is greater than or equal to the return air temperature, it indicates that the system's cooling capacity is excessive. Therefore, the opening of the first valve is increased, the opening of the second valve is decreased, and the compressor frequency is reduced. This increases the refrigerant flow rate in the natural cooling module and reduces the overall cooling capacity of the cooling system, so as to meet the energy-saving requirements as much as possible while ensuring that the system's cooling capacity meets the requirements.

[0081] If the target temperature is lower than the return air temperature, it indicates that the system's cooling capacity is insufficient. In this case, the opening of the first valve is reduced, the opening of the second valve is increased, and the compressor frequency is increased. This increases the refrigerant flow rate in the compressor cooling module and reduces the refrigerant flow rate in the natural cooling module, thereby increasing the overall cooling capacity of the cooling system to meet the cooling requirements.

[0082] This embodiment can automatically control the system output based on the return air temperature and target temperature when the natural cooling module and the compressor cooling module are started simultaneously, thus taking into account both cooling and energy-saving requirements.

[0083] Furthermore, when both the natural cooling module and the compressor cooling module are activated simultaneously, after reducing the opening of the second valve and the compressor frequency, the system further includes: when the difference between the actual refrigerant temperature at the inlet and the outdoor ambient temperature is greater than or equal to a first preset threshold, closing the second valve and the compressor to shut down the compressor cooling module. This allows the compressor cooling module to be shut down promptly while still meeting cooling requirements, switching to natural cooling alone to further reduce energy consumption.

[0084] Furthermore, when both the natural cooling module and the compressor cooling module are activated simultaneously, after reducing the opening of the first valve, the following steps are also included: when the difference between the actual refrigerant temperature at the inlet and the outdoor ambient temperature is less than a second preset threshold, the first valve is closed to shut down the natural cooling module. The difference between the actual refrigerant temperature at the inlet and the outdoor ambient temperature is the heat exchange temperature difference. If the heat exchange temperature difference is small, the heat exchange efficiency of the natural cooling module is relatively low. In this case, shutting down the natural cooling module and processing this portion of the refrigerant flow through the compressor cooling module can improve cooling efficiency and meet cooling demands more quickly.

[0085] In one embodiment, when both the natural cooling module and the compressor cooling module are activated simultaneously, the method further includes: monitoring the actual refrigerant temperature at the outlet, wherein the refrigerant flowing from the natural cooling module and / or the compressor cooling module exits the cooling system through the outlet; if the actual refrigerant temperature at the outlet is lower than the outdoor ambient temperature, the natural cooling module is shut down. Specifically, the natural cooling module can be shut down by closing the first valve. The actual refrigerant temperature at the outlet is essentially the temperature of the mixture after the refrigerant cooled by the compressor cooling module and the refrigerant cooled by the natural cooling module are combined. If this temperature is lower than the outdoor ambient temperature, it indicates that natural cooling is not effective in lowering the temperature, therefore the natural cooling module is shut down promptly to meet the cooling demand as quickly as possible.

[0086] The cooling control method described above will be illustrated below with reference to a specific embodiment. However, it is worth noting that this specific embodiment is only for better illustration of this application and does not constitute an undue limitation of this application. The same or corresponding terminology used in the above embodiment will not be repeated in this embodiment.

[0087] like Figure 2 As shown, taking a cooling system for heat dissipation in a computer room as an example, the cooling system (also known as a liquid cooling system) includes: a liquid supply module 10 and a cooling module 20. The cooling module 20 includes a natural cooling module and a compressor cooling module.

[0088] The compressor cooling module includes: compressor 1, condenser 2, condenser fan 3, throttling device 4, evaporator 5 (plate heat exchanger), gas-liquid separator 6, and auxiliary devices of the refrigeration system (such as high-pressure switch 61, low-pressure switch 62, exhaust temperature sensor 63, etc.). The compressor cooling module uses a vapor refrigeration cycle to exchange heat between low-temperature, low-pressure refrigerant and high-temperature cooling water in the plate heat exchanger 5, thereby achieving the purpose of cooling the cooling water.

[0089] The natural cooling module includes a heat exchanger 7, a condenser fan 3, an automatic exhaust valve 8, etc. The natural cooling module uses the condenser fan 3 and the heat exchanger 7 to exchange heat between the low-temperature outdoor circulating air and the high-temperature cooling water, thereby achieving the purpose of cooling the cooling water.

[0090] The natural cooling module and the compressor cooling module each have their own corresponding cooling water flow path, through which cooling water is supplied by the liquid supply pump 9 and the cooling water flow path. An electric valve is installed at the inlet of each cooling water flow path; by controlling the opening of the electric valve, the water flow rate of the two cooling water flow paths can be controlled. Specifically, the natural cooling module corresponds to the first electric valve 11 (equivalent to the aforementioned first valve), and the compressor cooling module corresponds to the second electric valve 12 (equivalent to the aforementioned second valve 12).

[0091] like Figure 3 As shown, the process for determining the cooling method during system startup includes the following steps:

[0092] S301, received power-on command.

[0093] S302, Detecting outdoor ambient temperature (T) 环境 And obtain the set inlet water temperature (T) 设定进水 (equivalent to the set refrigerant temperature at the aforementioned inlet), calculate ΔT = T 设定进水 -T 环境 .

[0094] S303, △T≥△T1.

[0095] S304, only the natural cooling module is activated, specifically, the first electric valve 11 is opened and the second electric valve 12 is closed.

[0096] S305, △T2≤△T<△T1.

[0097] S306, simultaneously activate the natural cooling module and the compressor cooling module; specifically, both the first electric valve 11 and the second electric valve 12 are opened.

[0098] S307, △T<△T2.

[0099] S308, only the compressor cooling module is started, specifically, the second electric valve 12 is opened and the first electric valve 11 is closed.

[0100] △T1 (equivalent to the first preset threshold) and △T2 (equivalent to the second preset threshold) are preset temperature difference thresholds, for example, △T1 = 10℃ and △T2 = 5℃. By adjusting their settings, natural cooling can be used as much as possible while meeting cooling requirements, avoiding the need to start the compressor for refrigeration, thereby achieving energy saving.

[0101] Once the liquid cooling system is started, it can be set according to the target temperature (i.e., the set temperature T). 设定 ) and return air temperature (T 回风 ), actual inlet water temperature (T) 进水 (equivalent to the actual refrigerant temperature at the inlet) and the actual outlet water temperature (T) 出水 The system intelligently controls the cooling water flow of the currently activated cooling modules (equivalent to the actual refrigerant temperature at the outlet) and intelligently switches between the natural cooling module and the compressor cooling module to ensure maximum energy saving while meeting cooling capacity requirements. Among these, T... 设定 and T 回风 Parameter information for terminal devices used in conjunction with liquid cooling systems.

[0102] (1) Only activate the natural cooling module

[0103] T was detected 设定 ≥T 回风 The system was judged to have excessive cooling capacity. The liquid cooling system reduced the liquid supply by decreasing the output of the liquid supply pump 9, thus ensuring energy saving while meeting the cooling requirements.

[0104] T was detected 设定 <T 回风 The system was determined to have insufficient cooling capacity. The liquid cooling system increased the output of the liquid supply pump 9 to increase the liquid supply and ensure that the cooling demand was met.

[0105] (2) Only start the compressor cooling module

[0106] T was detected 设定 ≥T 回风 The system was judged to have excessive cooling capacity. The liquid cooling system reduced the output of the liquid supply pump 9 to reduce the system liquid supply, and simultaneously reduced the compressor frequency to ensure energy saving while meeting the cooling demand.

[0107] T was detected 设定 <T 回风 The system was determined to have insufficient cooling capacity. The liquid cooling system increased the output of the liquid supply pump 9 to increase the system's liquid supply volume and simultaneously increased the compressor frequency to ensure that the cooling demand was met.

[0108] (3) Simultaneously activate the natural cooling module and the compressor cooling module.

[0109] T was detected 设定 <T 回风 If the system is determined to have insufficient cooling capacity, the compressor frequency increases, simultaneously increasing the opening of the second electric valve 12 and decreasing the opening of the first electric valve 11. This increases the refrigerant flow rate in the compressor cooling module and decreases the refrigerant flow rate in the natural cooling module, thereby increasing the overall cooling capacity of the cooling unit to meet the cooling demand. At this time, if T... 进水 When the ambient temperature is less than ΔT2, the first electric valve 11 can be closed, thus shutting down the natural cooling module.

[0110] T was detected 设定 ≥T 回风 If the system is determined to have excessive cooling capacity, the opening of the first electric valve 11 is increased, while the opening of the second electric valve 12 is simultaneously decreased and the compressor frequency is reduced. This increases the refrigerant flow rate in the natural cooling module, reducing the overall cooling capacity of the cooling unit to ensure energy efficiency while meeting system cooling requirements. At this point, the cooling performance is satisfactory, and T... 进水 -T 环境 If ≥△T1, the second electric valve 12 and the compressor can be closed, and the compressor cooling module can be shut down.

[0111] T was detected 出水 <T 环境 If the first electric valve 11 is closed, the natural cooling module will be shut down.

[0112] The cooling system provided in this embodiment is compatible with multiple cooling methods and can intelligently switch between them. Upon startup, it determines the cooling method based on environmental conditions and monitors environmental changes during operation, switching the cooling method accordingly. In extremely low outdoor temperatures, the compressor can be deactivated, providing refrigerant that meets the heat dissipation requirements of the servers in the data center through natural cooling alone, significantly reducing energy consumption and preventing the compressor from operating at extremely low temperatures, thus extending the product's lifespan. In low outdoor temperatures, the compressor can operate at low frequency, combining natural cooling and compressor cooling to provide refrigerant that meets the heat dissipation requirements of the servers in the data center, further reducing energy consumption. In high outdoor temperatures, the compressor is activated directly, providing refrigerant that meets the heat dissipation requirements of the servers in the data center through compressor cooling alone, satisfying the data center's cooling requirements. Flow distribution in each cooling loop: During operation, the refrigerant flow ratio between the natural cooling module and the compressor cooling module can be automatically allocated according to changes in cooling demand, maximizing energy savings while ensuring sufficient cooling capacity. This solves the problem of data center air conditioners requiring continuous compressor operation, resulting in high energy consumption and reduced overall system lifespan.

[0113] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0114] Based on the same inventive concept, this embodiment provides a cooling control device that can be used to implement the cooling control method described in the above embodiments. This cooling control device can be implemented through software and / or hardware. The cooling system is used to cool the refrigerant and includes at least two cooling modules.

[0115] Figure 4 This is a structural block diagram of the cooling control device provided in an embodiment of the present invention, as shown below. Figure 4 As shown, the cooling control device includes:

[0116] Module 41 is used to determine the cooling module to be activated based on the outdoor ambient temperature.

[0117] Adjustment module 42 is used to adjust the flow rate of refrigerant delivered to the cooling module according to the target temperature and return air temperature during the operation of the cooling module.

[0118] Optionally, module 41 is specifically used for:

[0119] Based on the range of outdoor ambient temperature, determine the cooling module to be activated; or,

[0120] Based on the outdoor ambient temperature and the set refrigerant temperature at the inlet, the cooling module to be activated is determined, wherein the refrigerant is delivered to each cooling module through the inlet.

[0121] Optionally, the cooling system includes a natural cooling module and a compressor cooling module; the determining module 41 includes:

[0122] A calculation unit is used to calculate the difference between the set refrigerant temperature at the inlet and the outdoor ambient temperature;

[0123] The first determining unit is configured to determine that only the natural cooling module is activated if the difference is greater than or equal to a first preset threshold.

[0124] The second determining unit is configured to determine that the natural cooling module and the compressor cooling module are started simultaneously if the difference is greater than or equal to a second preset threshold and less than the first preset threshold.

[0125] The third determining unit is used to determine that only the compressor cooling module is activated if the difference is less than the second preset threshold.

[0126] Optionally, the cooling system includes: a drive component for delivering the refrigerant to each cooling module;

[0127] Valves are installed on the connecting pipes between the drive component and each cooling module. When any cooling module needs to be started, the valve corresponding to that cooling module is opened.

[0128] Optionally, when only the natural cooling module is activated, module 42 is specifically used for:

[0129] If the target temperature is greater than or equal to the return air temperature, the output of the drive component is reduced to reduce the flow rate of refrigerant delivered to the natural cooling module.

[0130] If the target temperature is lower than the return air temperature, the output of the drive component is increased to increase the refrigerant flow rate delivered to the natural cooling module.

[0131] Optionally, when only the compressor cooling module is activated, module 42 is specifically used for:

[0132] If the target temperature is greater than or equal to the return air temperature, the output of the drive component is reduced to reduce the refrigerant flow rate delivered to the compressor cooling module, and the compressor frequency is reduced at the same time.

[0133] If the target temperature is lower than the return air temperature, the output of the drive component is increased to increase the refrigerant flow rate delivered to the compressor cooling module, while the compressor frequency is increased.

[0134] Optionally, when both the natural cooling module and the compressor cooling module are activated simultaneously, adjustment module 42 is specifically used for:

[0135] If the target temperature is greater than or equal to the return air temperature, then increase the opening of the first valve, decrease the opening of the second valve, and decrease the compressor frequency.

[0136] If the target temperature is lower than the return air temperature, then reduce the opening of the first valve, increase the opening of the second valve, and increase the compressor frequency.

[0137] The first valve is installed on the connecting pipe between the drive component and the natural cooling module, and the second valve is installed on the connecting pipe between the drive component and the compressor cooling module.

[0138] Optionally, the adjustment module 42 is further configured to: when the natural cooling module and the compressor cooling module are started simultaneously, after reducing the opening degree of the second valve and the compressor frequency, when the difference between the actual refrigerant temperature at the inlet and the outdoor ambient temperature is greater than or equal to a first preset threshold, close the second valve and the compressor to shut down the compressor cooling module; and after reducing the opening degree of the first valve, when the difference between the actual refrigerant temperature at the inlet and the outdoor ambient temperature is less than a second preset threshold, close the first valve to shut down the natural cooling module; wherein the refrigerant is delivered to the natural cooling module and / or the compressor cooling module through the inlet.

[0139] Optionally, the cooling system includes a natural cooling module and a compressor cooling module; the cooling control device further includes:

[0140] A monitoring module is used to monitor the actual refrigerant temperature at the outlet when the natural cooling module and the compressor cooling module are started simultaneously, wherein the refrigerant flowing out from the natural cooling module and / or the compressor cooling module flows out of the cooling system through the outlet;

[0141] The processing module is used to shut down the natural cooling module if the actual refrigerant temperature at the outlet is lower than the outdoor ambient temperature.

[0142] The aforementioned cooling control device can execute the cooling control method provided in the embodiments of the present invention, and has the corresponding functional modules and beneficial effects for executing the method. Technical details not described in detail in this embodiment can be found in the cooling control method provided in the embodiments of the present invention.

[0143] This invention also provides a cooling system, including the cooling control device described in the above embodiments.

[0144] This invention also provides a non-volatile computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the method described in the above embodiments.

[0145] This invention also provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method described in the above embodiments.

[0146] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. 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 can be selected to achieve the purpose of this embodiment according to actual needs.

[0147] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, 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, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0148] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooling control method, characterized in that, The cooling system is used to cool the refrigerant, and the cooling system includes at least two cooling modules. The cooling control method includes: The cooling module to be activated is determined based on the outdoor ambient temperature; During the operation of the cooling module, the flow rate of the refrigerant supplied to the cooling module is adjusted according to the target temperature and the return air temperature; The cooling system includes a drive component for delivering the refrigerant to each cooling module; the cooling system includes a natural cooling module and a compressor cooling module; a first valve is disposed on the connection pipeline between the drive component and the natural cooling module, and a second valve is disposed on the connection pipeline between the drive component and the compressor cooling module; When both the natural cooling module and the compressor cooling module are activated simultaneously, during the operation of the cooling module, the flow rate of the refrigerant supplied to the cooling module is adjusted according to the target temperature and the return air temperature, including: If the target temperature is greater than or equal to the return air temperature, the opening of the first valve is increased, the opening of the second valve is decreased, and the compressor frequency is reduced. Then, when the difference between the actual refrigerant temperature at the inlet and the outdoor ambient temperature is greater than or equal to the first preset threshold, the second valve and the compressor are closed to shut down the compressor cooling module. If the target temperature is lower than the return air temperature, the opening of the second valve is increased and the compressor frequency is increased, while the opening of the first valve is decreased. Then, when the difference between the actual refrigerant temperature at the inlet and the outdoor ambient temperature is less than a second preset threshold, the first valve is closed to shut down the natural cooling module. The refrigerant is delivered to the natural cooling module and / or the compressor cooling module through the inlet. When both the natural cooling module and the compressor cooling module are activated simultaneously, the system further includes: monitoring the actual refrigerant temperature at the outlet, wherein the refrigerant flowing from the natural cooling module and / or the compressor cooling module flows out of the cooling system through the outlet; if the actual refrigerant temperature at the outlet is lower than the outdoor ambient temperature, the natural cooling module is shut down.

2. The method according to claim 1, characterized in that, The cooling modules to be activated are determined based on the outdoor ambient temperature, including: Based on the range of outdoor ambient temperature, determine the cooling module to be activated; or, Based on the outdoor ambient temperature and the set refrigerant temperature at the inlet, the cooling module to be activated is determined, wherein the refrigerant is delivered to each cooling module through the inlet.

3. The method according to claim 2, characterized in that, Based on the outdoor ambient temperature and the set refrigerant temperature at the inlet, determine the cooling module to be activated, including: Calculate the difference between the set refrigerant temperature at the inlet and the outdoor ambient temperature; If the difference is greater than or equal to the first preset threshold, then it is determined that only the natural cooling module will be activated; If the difference is greater than or equal to the second preset threshold and less than the first preset threshold, then it is determined that the natural cooling module and the compressor cooling module are started simultaneously. If the difference is less than the second preset threshold, then it is determined that only the compressor cooling module will be activated.

4. The method according to claim 1, characterized in that, When only the natural cooling module is activated, during the operation of the cooling module, the flow rate of the refrigerant supplied to the cooling module is adjusted according to the target temperature and return air temperature, including: If the target temperature is greater than or equal to the return air temperature, the output of the drive component is reduced to reduce the flow rate of refrigerant delivered to the natural cooling module. If the target temperature is lower than the return air temperature, the output of the drive component is increased to increase the refrigerant flow rate delivered to the natural cooling module.

5. The method according to claim 1, characterized in that, When only the compressor cooling module is activated, during the operation of the cooling module, the flow rate of the refrigerant supplied to the cooling module is adjusted according to the target temperature and return air temperature, including: If the target temperature is greater than or equal to the return air temperature, the output of the drive component is reduced to reduce the refrigerant flow rate delivered to the compressor cooling module, and the compressor frequency is reduced at the same time. If the target temperature is lower than the return air temperature, the output of the drive component is increased to increase the refrigerant flow rate delivered to the compressor cooling module, while the compressor frequency is increased.

6. A cooling control device, characterized in that, The cooling system is used to cool the refrigerant, and the cooling system includes at least two cooling modules. The cooling control device includes: The determination module is used to determine which cooling module should be activated based on the outdoor ambient temperature. An adjustment module is used to adjust the flow rate of the refrigerant supplied to the cooling module according to the target temperature and return air temperature during the operation of the cooling module. The cooling system includes a drive component for delivering the refrigerant to each cooling module; the cooling system includes a natural cooling module and a compressor cooling module; a first valve is disposed on the connection pipeline between the drive component and the natural cooling module, and a second valve is disposed on the connection pipeline between the drive component and the compressor cooling module; When both the natural cooling module and the compressor cooling module are activated simultaneously, the adjustment module is specifically used for: If the target temperature is greater than or equal to the return air temperature, the opening of the first valve is increased, the opening of the second valve is decreased, and the compressor frequency is reduced. Then, when the difference between the actual refrigerant temperature at the inlet and the outdoor ambient temperature is greater than or equal to the first preset threshold, the second valve and the compressor are closed to shut down the compressor cooling module. If the target temperature is lower than the return air temperature, the opening of the second valve is increased and the compressor frequency is increased, while the opening of the first valve is decreased. Then, when the difference between the actual refrigerant temperature at the inlet and the outdoor ambient temperature is less than a second preset threshold, the first valve is closed to shut down the natural cooling module. The refrigerant is delivered to the natural cooling module and / or the compressor cooling module through the inlet. The cooling control device also includes: A monitoring module is used to monitor the actual refrigerant temperature at the outlet when the natural cooling module and the compressor cooling module are started simultaneously, wherein the refrigerant flowing out of the natural cooling module and / or the compressor cooling module flows out of the cooling system through the outlet; The processing module is used to shut down the natural cooling module if the actual refrigerant temperature at the outlet is lower than the outdoor ambient temperature.

7. A cooling system, characterized in that, include: The cooling control device as described in claim 6.

8. A non-volatile computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

Images