Cooling unit, control method and device thereof and storage medium

Abstract

The invention provides a cooling unit, a control method and device thereof and a storage medium, and relates to the technical field of refrigeration. The control method of the cooling unit comprises the steps that the first liquid supply temperature is obtained; according to the allowable longest preparation time of the to-be-cooled equipment, the refrigeration solution amount, the target liquid supply temperature upper limit, the first liquid supply temperature and the rated refrigeration power of a single refrigeration module, a first number is determined; and the first number of refrigeration modules are started during startup.

Description

Technical Field

[0001] This disclosure relates to the field of refrigeration technology, and in particular to a cooling unit and its control method, apparatus and storage medium. Background Technology

[0002] With the increasing development of special electronic equipment, the heat density of the equipment is also increasing exponentially, and the precision of the devices is becoming more and more important. The increase in the precision of the devices means that the environment in which these devices (such as semiconductors) need to perform their due functions is also becoming more demanding, and the requirements for the stability of the ambient temperature are also becoming more stringent.

[0003] Related technologies employ cooling units to refrigerate electronic equipment, ensuring that the operating environment remains relatively constant at the required temperature, thereby improving the reliability of the electronic equipment. Summary of the Invention

[0004] One objective of this disclosure is to improve the timeliness and accuracy of cooling the object being cooled.

[0005] According to one aspect of some embodiments of this disclosure, a control method for a cooling unit is proposed, comprising: acquiring a first liquid supply temperature; determining a first quantity based on the maximum allowable preparation time of the equipment to be cooled, the amount of refrigerant solution, the upper limit of the target liquid supply temperature, the first liquid supply temperature, and the rated cooling power of a single refrigeration module; and activating the first quantity of refrigeration modules upon startup.

[0006] Based on the method in the embodiments shown in this disclosure, the required cooling capacity to be provided to the equipment to be cooled can be obtained according to the current liquid supply temperature and the required liquid supply temperature. Combined with the rated power of the cooling module and the waiting time of the equipment to be cooled, the number of cooling modules to be started can be determined, thereby providing the equipment to be cooled with a cooling solution that meets its operating temperature range in a timely manner, and improving the timeliness and accuracy of the cooling response.

[0007] In some embodiments, the control method for the cooling unit further includes: acquiring a second supply liquid temperature, a return liquid temperature, and a supply liquid flow rate; determining a heat load based on the second supply liquid temperature, the return liquid temperature, and the supply liquid flow rate; determining a second number of required cooling modules based on the heat load; and adjusting the number of cooling modules in the start-up state based on the second number.

[0008] Based on the method in the embodiments shown in this disclosure, the supply liquid temperature and return liquid temperature can be monitored in real time after the machine is turned on and running stably. The heat generation of the equipment to be cooled can be indirectly obtained through the return liquid temperature. Then, the number of cooling modules that match the current heat generation can be obtained and adjusted to improve the matching degree between cooling and demand. This avoids excessive cooling that causes condensation and affects the normal operation of the equipment, or excessively high supply liquid temperature that causes poor cooling and affects the normal operation of electronic equipment, thereby improving the accuracy and reliability of cooling.

[0009] In some embodiments, determining the second number of required cooling modules based on the heat load includes: determining the heat range in which the heat load is located; and determining the second number based on the correspondence between the heat range and the number of cooling modules.

[0010] Based on the method in the embodiments shown in this disclosure, the required number of cooling modules can be determined by comparing heat ranges, thereby improving the regulation efficiency of the cooling modules.

[0011] In some embodiments, the heat range corresponding to the i refrigeration modules is the intersection of the heat load that causes the second liquid supply temperature of the i refrigeration modules to be greater than the lower limit of the target liquid supply temperature when the i refrigeration modules are running at the maximum frequency and the heat load that causes the second liquid supply temperature of the i refrigeration modules to be less than the upper limit of the target liquid supply temperature when the i refrigeration modules are running at the minimum frequency. i is a positive integer, 1≤i≤the number of refrigeration modules in the cooling unit, and the value of i corresponding to the heat range where the heat load is located is used as the second quantity.

[0012] Based on the method in the embodiments shown in this disclosure, the determined number of refrigeration modules can satisfy the condition that the liquid supply temperature is greater than the lower limit of the target liquid supply temperature when the refrigeration module is running at the maximum frequency, and the liquid supply temperature is less than the upper limit of the target liquid supply temperature when it is running at the minimum frequency, thereby avoiding the occurrence of excessively high or low liquid supply temperatures and improving the reliability of refrigeration.

[0013] In some embodiments, the control method for the cooling unit further includes: acquiring a third liquid supply temperature; if the difference between the third liquid supply temperature and the target liquid supply temperature is greater than a first threshold when the third liquid supply temperature is between the upper limit and the lower limit of the target liquid supply temperature, then increasing the operating frequency of the compressor of at least one refrigeration module in operation by a first magnitude; waiting for a first duration and then updating the third liquid supply temperature; if the difference between the third liquid supply temperature and the target temperature is greater than a second threshold, then again increasing the operating frequency of the compressor of the refrigeration module in operation by the first magnitude until the operating frequency of the compressors of the refrigeration modules in operation all reach the maximum frequency, or the difference between the third liquid supply temperature and the target temperature is less than or equal to the second threshold, and then stopping the adjustment of the compressor operating frequency, wherein the first threshold is greater than the second threshold.

[0014] Based on the method in the embodiments shown in this disclosure, when the liquid supply temperature is within the acceptable range for the equipment to be cooled, the liquid supply temperature can be further finely adjusted by adjusting the operating frequency of the compressor in the refrigeration module to address the case where the liquid supply temperature is slightly higher. This further improves the matching degree between the cooling capacity supply and the needs of the equipment to be cooled, and improves the accuracy of refrigeration.

[0015] In some embodiments, the control method for the cooling unit further includes: if the operating frequency of the compressor in operation reaches the maximum frequency and the difference between the third liquid supply temperature and the target temperature is greater than the second threshold, then at least one refrigeration module is started.

[0016] Based on the method in the embodiments shown in this disclosure, when the liquid supply temperature has not deviated significantly, but increasing the operating frequency of the compressor is no longer sufficient to meet the fine adjustment of the cooling capacity supply, the number of refrigeration modules in operation can be increased in a timely manner, thereby increasing the range of cooling capacity adjustment that can be achieved during the fine adjustment process, improving the fine adjustment capability, and further improving the accuracy of refrigeration.

[0017] In some embodiments, the control method for the cooling unit further includes: acquiring a fourth liquid supply temperature; if the difference between the target temperature and the fourth liquid supply temperature is greater than a third threshold when the fourth liquid supply temperature is between the upper limit of the target liquid supply temperature and the lower limit of the target liquid supply temperature, then reducing the operating frequency of the compressor of at least one refrigeration module in operation by a second magnitude; waiting for a second period of time and then updating the fourth liquid supply temperature; if the difference between the target temperature and the fourth liquid supply temperature is greater than the fourth threshold, then again reducing the operating frequency of the compressor of the refrigeration module in operation by a second magnitude until the operating frequency of the compressors of the refrigeration modules in operation all reach the minimum frequency, or the difference between the target temperature and the fourth liquid supply temperature is less than or equal to the fourth threshold, then stopping the adjustment of the compressor operating frequency, wherein the third threshold is greater than the fourth threshold.

[0018] Based on the method in the embodiments shown in this disclosure, when the liquid supply temperature is within the acceptable range for the equipment to be cooled, the liquid supply temperature can be further finely adjusted by adjusting the operating frequency of the compressor in the refrigeration module to address the case where the liquid supply temperature is slightly lower. This further improves the matching degree between the cooling capacity supply and the needs of the equipment to be cooled, and improves the accuracy of refrigeration.

[0019] In some embodiments, the control method for the cooling unit further includes: if the operating frequency of the compressor in operation reaches the minimum frequency and the difference between the target temperature and the fourth liquid supply temperature is greater than the fourth threshold, then at least one refrigeration module is shut down.

[0020] Based on the method in the embodiments shown in this disclosure, when the liquid supply temperature has not deviated significantly, but reducing the operating frequency of the compressor is no longer sufficient to meet the fine adjustment of the cooling capacity, the number of refrigeration modules in operation can be promptly reduced, thereby increasing the range of cooling capacity adjustment that can be achieved during the fine adjustment process, improving the fine adjustment capability, and further improving the accuracy of refrigeration.

[0021] In some embodiments, the control method for the cooling unit further includes: during the test, adjusting the number of refrigeration modules started within a range of 1 to N, and determining the heat range corresponding to each number of refrigeration modules, where j is a positive integer less than or equal to N, and N is the number of refrigeration modules in the cooling unit. Determining the heat range corresponding to j refrigeration modules includes: starting j refrigeration modules; controlling the compressors of the j refrigeration modules to operate at the maximum frequency to determine a first heat load range that makes the fifth liquid supply temperature greater than the lower limit of the target liquid supply temperature; controlling the compressors of the j refrigeration modules to operate at the minimum frequency to determine a second heat load range that makes the fifth liquid supply temperature less than the upper limit of the target liquid supply temperature; and determining the intersection of the first heat load range and the second heat load range as the heat range corresponding to the j refrigeration modules.

[0022] Based on the method in the embodiments shown in this disclosure, the correlation between the heat range and the number of cooling modules can be obtained through the testing process, thereby improving the reliability of the obtained correlation and thus improving the reliability of the number of cooling modules determined according to the heat load during operation, thereby improving the reliability of cooling.

[0023] In some embodiments, the upper limit of the target liquid supply temperature is the sum of the target temperature and the temperature control accuracy; the lower limit of the target liquid supply temperature is the difference between the target temperature and the temperature control accuracy.

[0024] Based on the method in the embodiments shown in this disclosure, the liquid supply temperature can be controlled within an acceptable temperature control accuracy range based on the target temperature, thereby improving the temperature control capability of the cooling unit and the degree to which it meets the cooling accuracy requirements of the cooling equipment.

[0025] According to one aspect of some embodiments of this disclosure, a control device for a cooling unit is provided, comprising: a temperature acquisition unit configured to acquire a first supply liquid temperature; and a first adjustment unit configured to determine a first number of cooling modules based on the maximum allowable preparation time of the equipment to be cooled, the amount of refrigerant solution, the upper limit of the target supply liquid temperature, the first supply liquid temperature, and the rated cooling power of a single cooling module, and to start the first number of cooling modules upon startup.

[0026] Based on the apparatus in the embodiments shown in this disclosure, the required cooling capacity to be provided to the equipment to be cooled can be obtained according to the current liquid supply temperature and the required liquid supply temperature. Combined with the rated power of the cooling module and the waiting time of the equipment to be cooled, the number of cooling modules to be started can be determined, thereby providing the equipment to be cooled with a cooling solution that meets its operating temperature range in a timely manner, and improving the timeliness and accuracy of the cooling response.

[0027] In some embodiments, the temperature acquisition unit is further configured to acquire a second supply liquid temperature and a return liquid temperature; the control device of the cooling unit further includes: a flow acquisition unit configured to acquire a supply liquid flow rate; and a second adjustment unit configured to determine a heat load based on the second supply liquid temperature, the return liquid temperature and the supply liquid flow rate, and to determine a second number of required cooling modules based on the heat load, and to adjust the cooling modules in the start-up state based on the second number.

[0028] Based on the device in the embodiments shown in this disclosure, after the device is powered on and running stably, the supply liquid temperature and return liquid temperature can be monitored in real time. The heat generation status of the device to be cooled can be indirectly obtained through the return liquid temperature. In this way, the number of cooling modules that match the current heat generation status can be obtained and adjusted, thereby improving the matching degree between cooling and demand. This avoids excessive cooling that causes condensation and affects the normal operation of the device, or excessively high supply liquid temperature that causes poor cooling of the device and affects the normal operation of electronic equipment, thereby improving the accuracy and reliability of cooling.

[0029] In some embodiments, the temperature acquisition unit is further configured to acquire a third liquid supply temperature, and the control device of the cooling unit further includes: a third adjustment unit configured to, when the third liquid supply temperature is between the upper limit of the target liquid supply temperature and the lower limit of the target liquid supply temperature, if the difference between the third liquid supply temperature and the target temperature is greater than a first threshold, increase the operating frequency of the compressor of at least one refrigeration module in operation by a first magnitude; after waiting for a first duration, trigger the temperature acquisition unit to update the third liquid supply temperature; if the difference between the third liquid supply temperature and the target temperature is greater than a second threshold, perform the operation of increasing the operating frequency of the compressor of the refrigeration module in operation by the first magnitude again, until the operating frequency of the compressor of the refrigeration module in operation reaches the maximum frequency, or the difference between the third liquid supply temperature and the target temperature is less than or equal to the second threshold, and stop adjusting the operating frequency of the compressor, wherein the first threshold is greater than the second threshold.

[0030] Based on the apparatus in the embodiments shown in this disclosure, when the liquid supply temperature is within the acceptable range for the equipment to be cooled, the liquid supply temperature can be further finely adjusted by adjusting the operating frequency of the compressor in the refrigeration module to address the case where the liquid supply temperature is slightly higher. This further improves the matching degree between the cooling capacity supply and the needs of the equipment to be cooled, and enhances the accuracy of refrigeration.

[0031] In some embodiments, the control device of the cooling unit further includes a range determination unit, configured to: during the test, adjust the number of refrigeration modules started within a range of 1 to N, and determine the heat range corresponding to each number of refrigeration modules, where j is a positive integer less than or equal to N, and N is the number of refrigeration modules in the cooling unit. Determining the heat range corresponding to j refrigeration modules includes: starting j refrigeration modules; controlling the compressors of the j refrigeration modules to operate at the maximum frequency to determine a first heat load range that makes the fifth liquid supply temperature greater than the lower limit of the target liquid supply temperature; controlling the compressors of the j refrigeration modules to operate at the minimum frequency to determine a second heat load range that makes the fifth liquid supply temperature less than the upper limit of the target liquid supply temperature; and determining the intersection of the first heat load range and the second heat load range as the heat range corresponding to the j refrigeration modules.

[0032] Based on the apparatus in the embodiments shown in this disclosure, the correlation between the heat range and the number of cooling modules can be obtained through the testing process, thereby improving the reliability of the obtained correlation and thus improving the reliability of the number of cooling modules determined according to the heat load during operation, thereby improving the reliability of cooling.

[0033] According to one aspect of some embodiments of the present disclosure, a control device for a cooling unit is provided, comprising: a memory; and a processor coupled to the memory, the processor being configured to execute any of the cooling unit control methods described above based on instructions stored in the memory.

[0034] Based on the apparatus in the embodiments shown in this disclosure, the required cooling capacity to be provided to the equipment to be cooled can be obtained according to the current liquid supply temperature and the required liquid supply temperature. Combined with the rated power of the cooling module and the waiting time of the equipment to be cooled, the number of cooling modules to be started can be determined, thereby providing the equipment to be cooled with a cooling solution that meets its operating temperature range in a timely manner, and improving the timeliness and accuracy of the cooling response.

[0035] According to one aspect of some embodiments of the present disclosure, a computer-readable storage medium is provided having computer instructions stored thereon that, when executed by a processor, implement any of the control methods for a cooling unit described above.

[0036] By running the instructions on the storage medium disclosed herein, the required cooling capacity for the equipment to be cooled can be obtained based on the current supply liquid temperature and the supply liquid temperature requirement. Combined with the rated power of the cooling module and the waiting time of the equipment to be cooled, the number of cooling modules to be started can be determined, thereby providing the equipment to be cooled with a cooling solution that meets its operating temperature range in a timely manner, improving the timeliness and accuracy of the cooling response.

[0037] According to one aspect of some embodiments of this disclosure, a computer program product is proposed, including a computer program or instructions that, when executed by a processor, implement any of the control methods for a cooling unit described above.

[0038] By running the program product disclosed herein, the required cooling capacity to be provided to the equipment to be cooled can be obtained based on the current supply liquid temperature and the supply liquid temperature requirement. Combined with the rated power of the cooling module and the waiting time of the equipment to be cooled, the number of refrigeration modules to be started can be determined, thereby providing the equipment to be cooled with a refrigerant solution that meets its operating temperature range in a timely manner, improving the timeliness and accuracy of the cooling response.

[0039] According to one aspect of some embodiments of this disclosure, a cooling unit is provided, comprising: a plurality of refrigeration modules connected in parallel, configured to cool a refrigeration solution after absorbing heat from a device to be cooled, and to output the cooled refrigeration solution; a temperature sensor configured to detect the supply liquid temperature of the cooling unit; and a control device for any of the cooling units described above.

[0040] Based on the cooling unit in the embodiments shown in this disclosure, the required cooling capacity to be provided to the equipment to be cooled can be obtained according to the current liquid supply temperature and the liquid supply temperature requirement. Combined with the rated power of the cooling module and the waiting time of the equipment to be cooled, the number of refrigeration modules to be started can be determined, thereby providing the equipment to be cooled with a refrigerant solution that meets its operating temperature range in a timely manner, and improving the timeliness and accuracy of the cooling response. Attached Figure Description

[0041] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this disclosure, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure.

[0042] Figure 1 Flowcharts showing some embodiments of the control method for the cooling unit disclosed herein.

[0043] Figure 2 Flowcharts showing some other embodiments of the control method for the cooling unit disclosed herein.

[0044] Figure 3 This is a flowchart of some further embodiments of the control method for the cooling unit disclosed herein.

[0045] Figure 4 This is a schematic diagram of some embodiments of the control device for the cooling unit disclosed herein.

[0046] Figure 5 Schematic diagrams of other embodiments of the control device for the cooling unit of this disclosure.

[0047] Figure 6 This is a schematic diagram of some further embodiments of the control device for the cooling unit of this disclosure.

[0048] Figure 7 This is a schematic diagram of some embodiments of the cooling unit disclosed herein.

[0049] Figure 8 This is a schematic diagram of some other embodiments of the cooling unit disclosed herein. Detailed Implementation

[0050] The technical solutions of this disclosure will be further described in detail below with reference to the accompanying drawings and embodiments.

[0051] Cooling units use refrigerant solutions to provide suitable operating temperatures for electronic equipment. Because effective equipment protection is required, a refrigerant supply method that offers more direct, stable, and efficient temperature control is necessary.

[0052] The inventors discovered that because the capacity of the electronic device in operation is uncertain, it is difficult to directly determine the cooling capacity. At the same time, in order to improve the reliability of the equipment operation and the influence of external interference, the less communication information and algorithms between the equipment and the cooling unit, the more reliable the operation of the electronic device. As a result, the cooling unit cannot know the real-time operating capacity of the electronic device, that is, how much cooling capacity needs to be provided to it in real time.

[0053] To address the aforementioned issues, this disclosure proposes a cooling unit and its control method, device, and storage medium. Based on the current supply liquid temperature and the required supply liquid temperature, the required cooling capacity to be provided to the equipment to be cooled is determined. Combining the rated power of the cooling modules and the waiting time of the equipment to be cooled, the number of refrigeration modules to be started is determined, thereby providing the equipment to be cooled with a refrigerant solution that meets its operating temperature range in a timely manner, improving the timeliness and accuracy of the cooling response.

[0054] Flowcharts of some embodiments of the control method for the cooling unit disclosed herein are as follows: Figure 1 As shown. This operation is performed when the cooling unit begins to cool the equipment to be cooled, for example, during startup.

[0055] In step 101, the first supply temperature is obtained. In some embodiments, the temperature of the solution at the inlet of the cooling solution supplied to the cooling device can be detected by a temperature sensor deployed on the side of the device to be cooled, and the detection result of the temperature sensor can be obtained.

[0056] In step 102, the first number of cooling modules to be started is determined based on the maximum allowable preparation time of the equipment to be cooled, the amount of cooling solution, the upper limit of the target liquid supply temperature, the first liquid supply temperature, and the rated cooling power of a single cooling module.

[0057] The maximum allowable preparation time for the device to be cooled is the maximum length of time the device can wait to be cooled. In some embodiments, the maximum allowable preparation time for the device to be cooled is set and adjusted according to the needs of the device to be cooled.

[0058] The upper limit of the target supply temperature is the sum of the target temperature T and the temperature control accuracy ΔT. The target temperature can be set and adjusted according to the needs of the equipment to be cooled. This method provides the required temperature of the refrigerant to the equipment being cooled and keeps the temperature within the control accuracy range.

[0059] In some embodiments, based on the refrigerant flow rate V and the upper limit of the target supply temperature T 上限 First liquid supply temperature T 供液 Combined with the density ρ and specific heat capacity c of the refrigeration solution p It can obtain the cooling capacity required to cool the equipment to be cooled, and then determine the cooling capacity based on the rated cooling power Q of a single refrigeration module. 额定 and the maximum allowable preparation time t for the equipment to be cooled 准备 The first number of cooling modules is obtained.

[0060] In some embodiments, the first number of cooling modules is obtained according to the following formula.

[0061] N1=(c p *ρ*V*(T 供液 -T 上限 )) / (Q 额定 *t 准备 )

[0062] In the above formula, except for the first liquid supply temperature T 供液 Other parameters can be preset for timely use.

[0063] In some embodiments, when N1 is not an integer, it is rounded up to avoid insufficient cooling capacity.

[0064] In step 103, a first number of refrigeration modules are started. In some embodiments, a predetermined operating frequency of the compressor of the refrigeration module can be set, and the refrigeration module operates at this predetermined operating frequency after starting.

[0065] Based on the method in the embodiments shown above, the required cooling capacity for the equipment to be cooled can be obtained according to the current liquid supply temperature and the liquid supply temperature requirement. Combined with the rated power of the cooling module and the waiting time of the equipment to be cooled, the number of cooling modules to be started can be determined, thereby providing the equipment to be cooled with a cooling solution that meets its operating temperature range in a timely manner, improving the timeliness and accuracy of the cooling response.

[0066] Furthermore, after completing the startup preparation and reaching the target upper limit of the liquid supply temperature, or after the maximum allowable preparation time for the equipment to be cooled has been completed, the cooling supply preparation during the startup process is complete. At this point, the refrigerant cools the equipment, removing heat. The return liquid temperature reflects the equipment's temperature status to some extent; for example, when the equipment temperature is high, the refrigerant will heat up more; when the equipment temperature is low, the refrigerant will heat up less. The number of cooling modules can be further adjusted based on the return liquid temperature. In some embodiments, taking the reaching of the target upper limit of the liquid supply temperature as a trigger point, the following can be executed: Figure 2 The method in the illustrated embodiment includes steps 201-204.

[0067] In step 201, it is determined whether the maximum allowable preparation time for the aforementioned equipment to be cooled has been completed. If the maximum allowable preparation time t has been completed... 准备 Then proceed to step 202. If t has not yet been run... 准备 Then wait in step 201.

[0068] In step 202, the current supply liquid temperature (second supply liquid temperature), return liquid temperature, and supply liquid flow rate are acquired. In some embodiments, a temperature sensor deployed on the side of the device to be cooled can be used to detect the solution temperature at the inlet where the refrigerant solution is supplied to the device, and the detection result of the temperature sensor is obtained as the supply liquid temperature; a temperature sensor deployed on the side of the device to be cooled can be used to detect the solution temperature at the outlet where the refrigerant solution is supplied from the device, and the detection result of the temperature sensor is obtained as the return liquid temperature. In some embodiments, the second supply liquid temperature mentioned in this disclosure is detected using the same sensor used to obtain the first supply liquid temperature as described above. In some embodiments, the supply liquid flow rate is detected using a flow sensor deployed on the supply or return liquid circuit.

[0069] In step 203, based on the second liquid supply temperature T 供液 , return liquid temperature T 回液 and liquid supply flow rate V 流量 Determine the heat load. The heat load is the amount of heat generated by the equipment to be cooled per unit time (e.g., seconds).

[0070] In some embodiments, the heat load in step 203 is determined by indirectly calculating the return liquid temperature and supply liquid flow rate, and by calculating the temperature rise of the refrigeration solution after the refrigeration operation, thus determining how much heat it carries away from the equipment to be refrigerated, which is then used as the heat generation of the equipment to be refrigerated.

[0071] In some embodiments, the heat load is calculated according to the following formula.

[0072] Q= c p *ρ*V 流量 *(T)供液 -T 回液 ) / 3600

[0073] In this formula, V 流量 The hourly liquid supply volume is divided by 3600 to obtain the heat load Q per second.

[0074] In step 204, the second number N2 of required cooling modules is determined based on the heat load, and the number of cooling modules in the start-up state is adjusted according to the second number.

[0075] In some embodiments, the heat load range corresponding to the number of cooling modules can be preset, and the heat range of the heat load range can be set as shown in Table 1.

[0076] Table 1. Correspondence between heat load and number of cooling modules

[0077] Therefore, in step 204, the heat range where the heat load is located is first determined, and then a second quantity is determined based on the correspondence between the heat range and the number of cooling modules. Based on the method in the embodiments shown in this disclosure, the required number of cooling modules can be determined by comparing heat ranges, thereby improving the regulation efficiency of the cooling modules.

[0078] In some embodiments, the heat range corresponding to the i refrigeration modules is the intersection of the heat load that causes the liquid supply temperature of the i refrigeration modules to be greater than the lower limit of the target liquid supply temperature when operating at the maximum frequency, and the heat load that causes the liquid supply temperature of the i refrigeration modules to be less than the upper limit of the target liquid supply temperature when operating at the minimum frequency. i is a positive integer, 1 ≤ i ≤ the number of refrigeration modules in the cooling unit. Based on the method in the embodiments shown in this disclosure, the determined number of refrigeration modules can satisfy the condition that the liquid supply temperature of the refrigeration modules is greater than the lower limit of the target liquid supply temperature when operating at the maximum frequency, and less than the upper limit of the target liquid supply temperature when operating at the minimum frequency, thereby avoiding excessively high or low liquid supply temperatures and improving the reliability of refrigeration.

[0079] In some embodiments, the lower limit of the target liquid supply temperature is the difference between the target temperature and the temperature control accuracy ΔT, thereby enabling the liquid supply temperature to be controlled within an acceptable temperature control accuracy range based on the target temperature, improving the temperature control capability of the cooling unit and the degree to which the cooling accuracy requirements of the cooling equipment are met.

[0080] Based on the method in the embodiments shown in this disclosure, the supply liquid temperature and return liquid temperature can be monitored in real time after the machine is turned on and running stably. The heat generation of the equipment to be cooled can be indirectly obtained through the return liquid temperature. Then, the number of cooling modules that match the current heat generation can be obtained and adjusted to improve the matching degree between cooling and demand. This avoids excessive cooling that causes condensation and affects the normal operation of the equipment, or excessively high supply liquid temperature that causes poor cooling and affects the normal operation of electronic equipment, thereby improving the accuracy and reliability of cooling.

[0081] In some embodiments, Figure 2 The method in the illustrated embodiment can be executed multiple times after power-on, for example, at a predetermined frequency. In some embodiments, after step 204, step 202 can be executed again after a period of time to allow the refrigeration module to operate stably and after the adjusted refrigeration solution has flowed through the equipment. This allows the number of refrigeration modules to respond promptly to changes in the equipment's refrigeration demand, improving the timeliness and accuracy of the refrigeration response.

[0082] The control method of the above-mentioned cooling unit can control the liquid supply temperature between the upper and lower limits of the target liquid supply temperature, so that the liquid supply temperature meets the temperature control accuracy requirements.

[0083] Furthermore, when the liquid supply temperature is between the upper limit and the lower limit of the target liquid supply temperature, it can be further adjusted to bring the liquid supply temperature closer to the target temperature, thereby further improving the accuracy of liquid supply temperature control.

[0084] Flowcharts of further embodiments of the control method for the cooling unit disclosed herein are as follows: Figure 3 As shown.

[0085] In step 301, the current liquid supply temperature is obtained, namely the third liquid supply temperature or the fourth liquid supply temperature mentioned in this disclosure. In some embodiments, the third liquid supply temperature or the fourth liquid supply temperature mentioned in this disclosure is detected using the same sensor used to obtain the first liquid supply temperature as described above.

[0086] In some embodiments, if the current liquid supply temperature is greater than the target temperature by a amount greater than a first threshold, then step 311 is executed; if the current liquid supply temperature is less than the target temperature by a amount greater than a third threshold, then step 321 is executed; if the current liquid supply temperature is within the target range, such as (target temperature - third threshold, target temperature + first threshold), then step 331 is executed.

[0087] In some embodiments, the first threshold and the third threshold are a certain proportion of temperature control accuracy ΔT, for example, the first threshold = xΔT and the third threshold = zΔT, where x and z are positive numbers less than 1. In some embodiments, x = z.

[0088] In step 311, with the first amplitude H 升高Increase the operating frequency of the compressor in at least one operating refrigeration module. In some embodiments, the operating frequency of the compressors in all operating refrigeration modules can be increased to improve response efficiency; in some embodiments, the operating frequency of the compressors in some operating refrigeration modules can be increased in turn to further improve the accuracy of temperature control.

[0089] In step 312, after waiting for a first duration, the current supply temperature is reacquired, i.e., the third supply temperature is updated, triggering the execution of step 313. The first duration can be set and adjusted according to the reaction speed of the refrigeration module, the speed at which the refrigeration solution reaches the equipment to be cooled, etc.

[0090] In step 313, it is determined whether the amount by which the third supply temperature is greater than the target temperature is less than or equal to the second threshold, i.e., T. 供液 ≤T+T 第二阈值 In some embodiments, the second threshold can be a certain proportion of temperature control accuracy, for example, the second threshold = yΔT, where y is a positive number less than 1, and y <x。

[0091] If the amount by which the third liquid supply temperature exceeds the target temperature is greater than the second threshold, then proceed to step 314; if the amount by which the third liquid supply temperature exceeds the target temperature is less than or equal to the second threshold, then proceed to step 331.

[0092] In step 314, it is determined whether the operating frequencies of the compressors in the running refrigeration modules have all reached their maximum frequencies. If the operating frequencies of the compressors in the running refrigeration modules have all reached their maximum frequencies, then step 315 is executed; if the operating frequencies of the compressors in some running refrigeration modules have not reached their maximum frequencies, then the process returns to step 311, using the maximum frequency as the upper limit of the operating frequency for each compressor, and using the first amplitude H. 升高 The operating frequency of the compressor in at least one refrigeration module that is in operation is increased by a certain amount.

[0093] In step 315, at least one cooling module is activated. In some embodiments, a cooling module may be activated to avoid overcooling.

[0094] Based on the method in the embodiments shown in this disclosure, the cooling capacity can be finely adjusted by increasing the operating frequency of the compressor when the liquid supply temperature has not deviated significantly, thereby improving the adjustment accuracy. When increasing the operating frequency of the compressor is no longer sufficient to meet the fine adjustment of the cooling capacity supply, the number of refrigeration modules in operation can be increased in a timely manner, thereby increasing the range of cooling capacity adjustment that can be achieved during the fine adjustment process, improving the fine adjustment capability, and thus further improving the accuracy of refrigeration.

[0095] In step 321, with the second amplitude H 降低Reduce the operating frequency of the compressor of at least one refrigeration module in the operating state. In some embodiments, the operating frequencies of the compressors of all refrigeration modules in the operating state can be reduced to improve the response efficiency; in some embodiments, the operating frequencies of the compressors of some of the refrigeration modules in the operating state can be reduced in turn to further improve the accuracy of temperature control.

[0096] In step 322, after waiting for the second time period, obtain the current liquid supply temperature again, that is, update the fourth liquid supply temperature, and trigger the execution of step 323. In some embodiments, the second time period can be set and adjusted according to the reaction speed of the refrigeration module, the speed of the refrigeration solution reaching the equipment to be cooled, etc. In some embodiments, the first time period = the second time period.

[0097] In step 323, determine whether the amount by which the fourth liquid supply temperature is less than the target temperature is less than or equal to the fourth threshold value, that is, T 供液 ≥T - T 第四阈值 . In some embodiments, the fourth threshold value can be a certain proportion of the temperature control accuracy. For example, the fourth threshold value = mΔT, where m is a positive number less than 1 and m < z. In some embodiments, m = y.

[0098] If the amount by which the fourth liquid supply temperature is greater than the target temperature is greater than the second threshold value, execute step 324; if the amount by which the fourth liquid supply temperature is greater than the target temperature is less than or equal to the second threshold value, execute step 331.

[0099] In step 324, determine whether the operating frequencies of the compressors of all refrigeration modules in the operating state have reached the minimum frequency. If the operating frequencies of the compressors of all refrigeration modules in the operating state have reached the minimum frequency, execute step 325; if there is a refrigeration module in the operating state whose compressor operating frequency has not reached the maximum frequency, return to step 321, with the minimum frequency as the upper limit of the operating frequency of each compressor, and with the first amplitude H 升高 as the amplitude, reduce the operating frequency of at least one compressor of the refrigeration modules in the operating state.

[0100] In step 325, close at least one refrigeration module. In some embodiments, one refrigeration module can be closed to avoid too large a temperature rise amplitude, thereby improving the adjustment accuracy.

[0101] Based on the method in the embodiments shown in the present disclosure, it is possible to finely adjust the refrigeration cooling capacity by reducing the operating frequency of the compressor when the liquid supply temperature has not deviated greatly, improving the adjustment accuracy; when the fine adjustment of the cooling capacity cannot be satisfied by reducing the operating frequency of the compressor, timely trigger the reduction of the number of refrigeration modules in the operating state, increasing the adjustable range of the cooling capacity that can be achieved in the fine adjustment process, improving the fine adjustment ability, and thus further improving the accuracy of refrigeration.

[0102] In step 331, the compressor operating frequency is kept constant.

[0103] Based on the method in the above embodiments of this disclosure, the cooling capacity can be finely adjusted by adjusting the operating frequency of the compressor when the liquid supply temperature has not deviated significantly, thereby improving the adjustment accuracy. When adjusting the operating frequency of the compressor is no longer sufficient to meet the fine adjustment of the cooling capacity supply, the number of refrigeration modules that adjust their operating status can be triggered in a timely manner, thereby increasing the range of cooling capacity adjustment that can be achieved during the fine adjustment process, improving the fine adjustment capability, and further improving the accuracy of refrigeration.

[0104] In some embodiments, the control method for the cooling unit further includes a preliminary testing process. During the testing process, a controllable heat load is provided, and the range of heat loads that each number of refrigeration modules can handle is tested one by one, as the heat range is associated with the number of refrigeration modules. For example, j refrigeration modules are started, where j is a positive integer, 1 ≤ j ≤ the number of refrigeration modules in the cooling unit; the liquid supply temperature is acquired in real time, i.e., the fifth liquid supply temperature mentioned in this disclosure; the compressors of the j refrigeration modules are controlled to operate at maximum frequency, the heat load is adjusted, and it is determined that the fifth liquid supply temperature can be made to exceed the lower limit of the target liquid supply temperature (i.e., T). 供液 The first heat load range is >T-△T); the compressors of j refrigeration modules are controlled to operate at the minimum frequency to determine the range that makes the fifth liquid supply temperature less than the upper limit of the target liquid supply temperature (i.e., T). 供液 The second heat load range (<T+△T) is determined; then the intersection of the first heat load range and the second heat load range is determined as the heat range corresponding to j refrigeration modules.

[0105] Based on the method in the embodiments shown in this disclosure, the correlation between the heat range and the number of cooling modules can be obtained through the testing process, thereby improving the reliability of the obtained correlation and thus improving the reliability of the number of cooling modules determined according to the heat load during operation, thereby improving the reliability of cooling; it can avoid the runaway of the liquid supply temperature caused by the preparation period required for the cooling modules to be turned on or off, thus achieving the effect of fine adjustment.

[0106] Schematic diagrams of some embodiments of the control device for the cooling unit disclosed herein are shown below. Figure 4 As shown.

[0107] The temperature acquisition unit 401 is capable of acquiring the first supply liquid temperature. In some embodiments, a temperature sensor deployed on the side of the device to be cooled can be used to detect the solution temperature at the inlet where the cooling solution is supplied to the device to be cooled, and the detection result of the temperature sensor can be obtained.

[0108] The first adjustment unit 402 is capable of determining the first number of refrigeration modules to be started based on the maximum allowable preparation time of the equipment to be cooled, the amount of refrigerant solution, the upper limit of the target supply temperature, the first supply temperature, and the rated cooling power of a single refrigeration module, and starting the first number of refrigeration modules. In some embodiments, the first adjustment unit 402 is capable of performing the method in any of the embodiments of steps 102 and 103 above.

[0109] Based on the device in the above embodiment, the required cooling capacity to be provided to the equipment to be cooled can be obtained according to the current liquid supply temperature and the required liquid supply temperature. Combined with the rated power of the cooling module and the waiting time of the equipment to be cooled, the number of cooling modules to be started can be determined, thereby providing the equipment to be cooled with a cooling solution that meets its operating temperature range in a timely manner, and improving the timeliness and accuracy of the cooling response.

[0110] In some embodiments, the temperature acquisition unit 401 can also acquire the return liquid temperature. In some embodiments, the temperature of the solution at the inlet of the cooling solution supplied to the cooling device can be detected by a temperature sensor deployed on the side of the cooling device, and the detection result of the temperature sensor is obtained, which is the supply liquid temperature; the temperature of the solution at the outlet of the cooling solution supplied by the cooling device can be detected by a temperature sensor deployed on the side of the cooling device, and the detection result of the temperature sensor is obtained, which is the return liquid temperature.

[0111] like Figure 4 As shown, the control device for the cooling unit further includes a flow acquisition unit 406 and a second adjustment unit 403. The flow acquisition unit 406 is capable of acquiring the liquid supply flow rate. In some embodiments, the liquid supply flow rate can be detected by a flow sensor deployed in the liquid supply or return path. The second adjustment unit 403 is capable of determining the heat load based on the real-time liquid supply temperature, return temperature, and liquid supply flow rate after the maximum allowable preparation time for start-up operation, or when the real-time liquid supply temperature is detected to have reached the upper limit of the target liquid supply temperature, and then determining a second number of required cooling modules based on the heat load. In some embodiments, the second adjustment unit 403 can perform the methods in any of the embodiments of steps 201, 203, and 204 above.

[0112] Based on the device in the embodiments shown in this disclosure, after the device is powered on and running stably, the supply liquid temperature and return liquid temperature can be monitored in real time. The heat generation status of the device to be cooled can be indirectly obtained through the return liquid temperature. In this way, the number of cooling modules that match the current heat generation status can be obtained and adjusted, thereby improving the matching degree between cooling and demand. This avoids excessive cooling that causes condensation and affects the normal operation of the device, or excessively high supply liquid temperature that causes poor cooling of the device and affects the normal operation of electronic equipment, thereby improving the accuracy and reliability of cooling.

[0113] In some embodiments, such as Figure 4As shown, the control device of the cooling unit also includes a third adjustment unit 404, which can set a smaller range based on the target temperature when the real-time liquid supply temperature is between the upper and lower limits of the target liquid supply temperature. Within this range, the compressor operating frequency of the refrigeration module is not adjusted. When the temperature exceeds this range, the cooling capacity of the cooling unit is finely adjusted by adjusting the compressor operating frequency of the refrigeration module. Based on the device in the above embodiments of this disclosure, the cooling capacity can be finely adjusted by adjusting the compressor operating frequency when the liquid supply temperature has not deviated significantly, thereby improving the adjustment accuracy. It can also avoid the loss of control of the liquid supply temperature due to the preparation period required for the refrigeration module to turn on or off, thus achieving the effect of fine adjustment.

[0114] In some embodiments, the third adjustment unit 404 can also trigger the number of refrigeration modules in operation to adjust their operating states if the liquid supply temperature cannot be limited to a smaller range based on the target temperature by adjusting the compressor operating frequency of the refrigeration module. This increases the range of cooling capacity adjustment that can be achieved during the fine-tuning process, improves the fine-tuning capability, and further improves the accuracy of refrigeration.

[0115] In some embodiments, the third adjustment unit 404 can perform the method in any of the embodiments described in steps 311-315 above. Based on the apparatus in the embodiments shown in this disclosure, it is possible to fine-tune the cooling capacity by increasing the operating frequency of the compressor when the liquid supply temperature has not deviated significantly, thereby improving the adjustment accuracy; when increasing the operating frequency of the compressor is no longer sufficient to meet the fine adjustment of the cooling capacity supply, it can promptly trigger an increase in the number of refrigeration modules in operation, thereby increasing the range of cooling capacity adjustment that can be achieved during the fine adjustment process, improving the fine adjustment capability, and further improving the accuracy of refrigeration.

[0116] In some embodiments, the third adjustment unit 404 can perform the method in any of the embodiments described in steps 321-325 above. Based on the apparatus in the embodiments shown in this disclosure, it is possible to fine-tune the cooling capacity by reducing the operating frequency of the compressor when the liquid supply temperature has not deviated significantly, thereby improving the adjustment accuracy; when reducing the operating frequency of the compressor is no longer sufficient to meet the fine adjustment of the cooling capacity supply, the number of refrigeration modules in reduced operating state is triggered in a timely manner, increasing the range of cooling capacity adjustment that can be achieved during the fine adjustment process, improving the fine adjustment capability, and thus further improving the accuracy of refrigeration.

[0117] In some embodiments, such as Figure 4As shown, the control device of the cooling unit also includes a range determination unit 405, which can perform preliminary test operations. During the test, a controllable heat load is provided, and the range of heat load that each number of refrigeration modules can handle is tested one by one, as the heat range is associated with the number of refrigeration modules. For example, j refrigeration modules are started, where j is a positive integer, 1≤j≤the number of refrigeration modules in the cooling unit; the liquid supply temperature is acquired in real time, i.e., the fifth liquid supply temperature mentioned in this disclosure; the compressors of the j refrigeration modules are controlled to run at the maximum frequency, the heat supply load is adjusted, and it is determined that the liquid supply temperature can be made to be greater than the lower limit of the target liquid supply temperature (i.e., T). 供液 The first heat load range when >T-△T); control the compressors of j refrigeration modules to operate at the minimum frequency to determine the range that allows the liquid supply temperature to be lower than the upper limit of the target liquid supply temperature (i.e., T). 供液 The second heat load interval when <T+△T) is determined; then the intersection of the first heat load interval and the second heat load interval is determined as the heat interval corresponding to j refrigeration modules.

[0118] Based on the apparatus in the embodiments shown in this disclosure, the correlation between the heat range and the number of cooling modules can be obtained through the testing process, thereby improving the reliability of the obtained correlation and thus improving the reliability of the number of cooling modules determined according to the heat load during operation, thereby improving the reliability of cooling.

[0119] A schematic diagram of an embodiment of the control device for the cooling unit disclosed herein is shown below. Figure 5 As shown. The control device for the cooling unit includes a memory 501 and a processor 502. The memory 501 can be a disk, flash memory, or any other non-volatile storage medium. The memory stores instructions from the corresponding embodiments of the cooling unit control method described above. The processor 502 is coupled to the memory 501 and can be implemented as one or more integrated circuits, such as a microprocessor or microcontroller. The processor 502 executes the instructions stored in the memory, improving the timeliness and accuracy of the cooling response.

[0120] In one embodiment, it can also be as follows: Figure 6 As shown, the control device 600 of the cooling unit includes a memory 601 and a processor 602. The processor 602 is coupled to the memory 601 via a BUS bus 603. The control device 600 of the cooling unit can also be connected to an external storage device 605 via a storage interface 604 to access external data, and can also be connected to a network or another computer system (not shown) via a network interface 606. Further details are omitted here.

[0121] In this embodiment, storing data instructions in a memory and then processing those instructions with a processor can improve the timeliness and accuracy of the cooling response.

[0122] In another embodiment, a computer-readable storage medium stores computer program instructions that, when executed by a processor, implement the steps of the control method for the cooling unit corresponding to the method in the embodiment. Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, apparatus, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0123] Schematic diagrams of some embodiments of the cooling unit disclosed herein are as follows: Figure 7 As shown.

[0124] A temperature sensor 71 is deployed on the side of the equipment to be cooled to detect the temperature of the solution at the inlet where the refrigerant solution is supplied to the equipment, and sends the detection result to the control device 72 of the cooling unit. In some embodiments, a temperature sensor can also be installed at the outlet where the refrigerant solution is supplied from the equipment, and the temperature of the solution at the outlet where the refrigerant solution is supplied from the equipment is detected and the detection result is sent to the control device 72 of the cooling unit.

[0125] The control device 72 of the cooling unit can be any one of those mentioned above, and can execute any one of the control methods of the cooling unit mentioned above.

[0126] The refrigeration modules 731-73N (where N is an integer greater than 1) can be started and stopped under the control of the control device 72 of the cooling unit. In some embodiments, the refrigeration modules 731-73N can also adjust their operating frequency under the control of the control device 72 of the cooling unit.

[0127] Based on the cooling unit in the embodiments shown in this disclosure, the required cooling capacity to be provided to the equipment to be cooled can be obtained according to the current liquid supply temperature and the liquid supply temperature requirement. Combined with the rated power of the cooling module and the waiting time of the equipment to be cooled, the number of refrigeration modules to be started can be determined, thereby providing the equipment to be cooled with a refrigerant solution that meets its operating temperature range in a timely manner, and improving the timeliness and accuracy of the cooling response.

[0128] Schematic diagrams of other embodiments of the cooling unit disclosed herein are as follows: Figure 8 As shown in the image.

[0129] The cooling unit includes multiple refrigeration modules, as shown in refrigeration modules 1-N in the figure, a temperature sensor 13 on the liquid supply side, a temperature sensor 9 on the liquid return side, and a control device 10 for the cooling unit. In addition, the cooling unit also includes a flow sensor 11, deployed on the liquid supply or return path, to detect the liquid supply flow rate and send the detection results to the control device 10. The cooling unit also includes a liquid supply pump 8.

[0130] Each refrigeration module includes a low-pressure refrigeration switch 1, an inverter compressor 2, a high-pressure refrigeration switch 3, a condenser fan 4, a condenser 5, an outdoor ambient temperature sensor 6, a throttling device 7, and an evaporator 12. The structure of the refrigeration module is based on the structure described in related technologies and will not be repeated here.

[0131] The cooling unit in the embodiments shown in this disclosure indirectly calculates the heat generation of electronic equipment by means of coolant flow rate and supply-return temperature difference. The number of cooling modules deployed is scheduled according to the calculated heat generation to achieve coarse adjustment in one step. Then, the frequency of the deployed cooling modules is adjusted according to the deviation between the supply temperature and the target temperature to achieve fine adjustment. This achieves a rapid response of the cooling unit's cooling output, thereby solving the problem of excessive temperature adjustment caused by frequent start-stop of cooling modules when the equipment load changes, and also meeting the requirement of precise and constant coolant supply.

[0132] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0133] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0134] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0135] This concludes the detailed description of the present disclosure. To avoid obscuring the concept of the disclosure, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0136] The methods and apparatus of this disclosure may be implemented in many ways. For example, they may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order of steps for the methods is for illustrative purposes only, and the steps of the methods of this disclosure are not limited to the order specifically described above unless otherwise specifically stated. Furthermore, in some embodiments, this disclosure may also be implemented as a program recorded on a recording medium, the program including machine-readable instructions for implementing the methods according to this disclosure. Thus, this disclosure also covers recording media storing programs for performing the methods according to this disclosure.

[0137] It should be noted that the terms "first," "second," etc., used in the specification, claims, and drawings of this disclosure 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 this disclosure 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.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. A method for controlling a chiller unit, comprising: obtaining a first supply temperature; determining a first number according to an allowed maximum preparation time of a device to be cooled, a refrigerant amount, an upper target supply temperature, the first supply temperature, and a rated refrigeration power of a single refrigeration module; starting up the first number of refrigeration modules at start-up. 2.The method according to claim 1, further comprising: obtaining a second supply temperature, a return temperature, and a supply flow rate; determining a heat load according to the second supply temperature, the return temperature, and the supply flow rate; determining a second number of required refrigeration modules according to the heat load; adjusting the refrigeration modules in a started-up state according to the second number.

3. The control method of a cooling pack according to claim 2, wherein, The determining of the second number of required refrigeration modules according to the heat load comprises: determining a heat interval in which the heat load is located; determining the second number according to a correspondence between the heat interval and the number of refrigeration modules. 4.The method according to claim 3, wherein, a heat interval corresponding to i refrigeration modules is an intersection of a heat load in which the second supply temperature is greater than a lower target supply temperature when the i refrigeration modules are operated at a maximum frequency and a heat load in which the second supply temperature is less than the upper target supply temperature when the i refrigeration modules are operated at a minimum frequency, i is a positive integer, 1≤i≤the number of refrigeration modules in the chiller unit, and the i value corresponding to the heat interval in which the heat load is located is taken as the second number. 5.The method according to claim 1, further comprising: obtaining a third supply temperature; in a case where the third supply temperature is between the upper target supply temperature and a lower target supply temperature, if a difference between the third supply temperature and a target temperature is greater than a first threshold, increasing a running frequency of a compressor of at least one refrigeration module in a running state by a first amplitude; waiting for a first time length, and then updating the third supply temperature; if the difference between the third supply temperature and the target temperature is greater than a second threshold, performing again the operation of increasing the running frequency of the compressor of at least one refrigeration module in the running state by the first amplitude until the running frequency of the compressor of the refrigeration module in the running state reaches a maximum frequency or the difference between the third supply temperature and the target temperature is less than or equal to the second threshold, and stopping adjusting the running frequency of the compressor, wherein the first threshold is greater than the second threshold. 6.The method according to claim 5, further comprising: if the running frequency of the compressor reaches the maximum frequency and the difference between the third supply temperature and the target temperature is greater than the second threshold, starting up at least one refrigeration module. 7.The method according to claim 1, further comprising: obtaining a fourth supply temperature; in a case where the fourth supply temperature is between the upper target supply temperature and the lower target supply temperature, if the difference between the target temperature and the fourth liquid supply temperature is greater than a third threshold, reducing the operating frequency of the compressor of at least one of the refrigeration modules in operation by a second amplitude; waiting for a second time length, and updating the fourth liquid supply temperature; if the difference between the target temperature and the fourth liquid supply temperature is greater than a fourth threshold, performing again the operation of reducing the operating frequency of the compressor of at least one of the refrigeration modules in operation by the second amplitude until the operating frequency of the compressor of the refrigeration module in operation reaches a minimum frequency, or the difference between the target temperature and the fourth liquid supply temperature is less than or equal to the fourth threshold, and stopping adjusting the operating frequency of the compressor, wherein the third threshold is greater than the fourth threshold.

8. The control method of the cooling unit according to claim 7, further comprising: if the operating frequency of the compressor in operation reaches the minimum frequency, and the difference between the target temperature and the fourth liquid supply temperature is greater than the fourth threshold, turning off at least one of the refrigeration modules.

9. The control method of the cooling unit according to claim 3, further comprising: during the test, adjusting the number of the started refrigeration modules in a range of 1 to N, and determining a heat interval corresponding to each number of the refrigeration modules, wherein j is a positive integer less than or equal to N, N is the number of the refrigeration modules in the cooling unit, and determining the heat interval corresponding to j refrigeration modules comprises: starting j refrigeration modules; controlling the compressor of the j refrigeration modules to operate at a maximum frequency, and determining a first heat load interval in which the fifth liquid supply temperature is greater than a lower limit of a target liquid supply temperature; controlling the compressor of the j refrigeration modules to operate at a minimum frequency, and determining a second heat load interval in which the fifth liquid supply temperature is less than an upper limit of the target liquid supply temperature; determining an intersection of the first heat load interval and the second heat load interval as the heat interval corresponding to the j refrigeration modules.

10. The control method of the cooling unit according to claim 1, wherein the upper limit of the target liquid supply temperature is a sum of the target temperature and a temperature control precision; the lower limit of the target liquid supply temperature is a difference between the target temperature and the temperature control precision.

11. A control device of a cooling unit, comprising: a temperature acquisition unit configured to acquire a first liquid supply temperature; a first adjustment unit configured to determine a first number of refrigeration modules to be started according to an allowed longest preparation time of a device to be cooled, a refrigeration solution amount, an upper limit of a target liquid supply temperature, the first liquid supply temperature, and a rated refrigeration power of a single refrigeration module.

12. The control device of a cooling pack according to claim 11, wherein, the temperature acquisition unit is further configured to acquire a second liquid supply temperature and a return liquid temperature; the control device of the cooling unit further comprises: a flow acquisition unit configured to acquire a liquid supply flow; and a second adjustment unit configured to determine a heat load according to the second liquid supply temperature, the return liquid temperature, and the liquid supply flow, and determine a second number of the refrigeration modules required according to the heat load, and adjust the refrigeration modules in the started state according to the second number.

13. The control device of a cooling pack according to claim 11, wherein, The temperature acquisition unit is further configured to acquire a third liquid supply temperature, and the control device of the cooling unit further comprises: a third adjusting unit configured to, if the third liquid supply temperature is between the target liquid supply temperature upper limit and the target liquid supply temperature lower limit, if the difference between the third liquid supply temperature and the target temperature is greater than a first threshold, increasing the operating frequency of the compressor of at least one of the refrigeration modules in operation by a first amplitude; after waiting for a first time length, triggering the temperature acquisition unit to update the third liquid supply temperature; if the difference between the third liquid supply temperature and the target temperature is greater than a second threshold, again performing the operation of increasing the operating frequency of the compressor of the refrigeration module in operation by the first amplitude until the operating frequency of the compressor of the refrigeration module in operation reaches a maximum frequency, or the difference between the third liquid supply temperature and the target temperature is less than or equal to the second threshold, stopping adjusting the operating frequency of the compressor, wherein the first threshold is greater than the second threshold. 14.The control device of the cooling unit according to claim 12, further comprising an interval determining unit configured to, during the test, adjust the number of the activated refrigeration modules in a range of 1 to N, and determine a heat interval corresponding to each number of the refrigeration modules. j is a positive integer less than or equal to N, N is the number N of the refrigeration modules in the cooling unit, and determining the heat interval corresponding to the j refrigeration modules comprises: starting the j refrigeration modules; controlling the compressors of the j refrigeration modules to operate at a maximum frequency, determining a first heat load interval in which the fifth liquid supply temperature is greater than the target liquid supply temperature lower limit; controlling the compressors of the j refrigeration modules to operate at a minimum frequency, determining a second heat load interval in which the fifth liquid supply temperature is less than the target liquid supply temperature upper limit; determining the intersection of the first heat load interval and the second heat load interval as the heat interval corresponding to the j refrigeration modules.

15. A control device of a cooling unit, comprising: a memory; and a processor coupled to the memory, the processor being configured to perform the control method of the cooling unit according to any one of claims 1 to 10 based on instructions stored in the memory.

16. A computer readable storage medium having computer instructions stored thereon, the instructions being executed by a processor to implement the control method of the cooling unit according to any one of claims 1 to 10.

17. A computer program product comprising computer programs or instructions, the computer programs or instructions being executed by a processor to implement the control method of the cooling unit according to any one of claims 1 to 10.

18. A cooling unit, comprising: a plurality of refrigeration modules connected in parallel and configured to cool refrigerant solution after absorbing heat from a device to be cooled and output the cooled refrigerant solution; a temperature sensor configured to detect the liquid supply temperature of the cooling unit; and the control device of the cooling unit according to any one of claims 11 to 15. ​

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