Indirect evaporative cooling unit and control method, device and equipment thereof and storage medium

Abstract

The application discloses an indirect evaporative cooling unit and a control method, device and equipment thereof and a storage medium. The indirect evaporative cooling unit control method is applied to the indirect evaporative cooling unit, the indirect evaporative cooling unit comprises a heat exchange core and a primary side fan, and the indirect evaporative cooling unit control method comprises the following steps: obtaining a first functional relationship between air volume provided by the primary side fan and a primary side inlet air temperature of the indirect evaporative cooling unit; obtaining a second functional relationship between a minimum rotating speed of the primary side fan and the air volume provided by the primary side fan; obtaining a third functional relationship between the minimum rotating speed of the primary side fan and the primary side inlet air temperature according to the first functional relationship and the second functional relationship; obtaining a real-time primary side inlet air temperature; and determining a real-time minimum rotating speed of the primary side fan according to the third functional relationship and the real-time primary side inlet air temperature. The phenomenon of low temperature or high temperature of a machine room of the indirect evaporative cooling unit can be avoided when the indirect evaporative cooling unit is operated in a scene with large diurnal temperature difference.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of indirect evaporative cooling, in particular to an indirect evaporative cooling unit control method. In addition, the present application also relates to an indirect evaporative cooling unit, an indirect evaporative cooling unit control device, an indirect evaporative cooling unit control equipment and a computer readable storage medium. BACKGROUND

[0002] In order to reduce the PUE (Power Usage Effectiveness) of a data center, the PUE is the ratio of the total energy consumption of the data center to the IT load consumption, an indirect evaporative cooling unit is widely used in the data center, and the indirect evaporative cooling unit can obtain cold energy from the natural environment, thereby greatly reducing the air conditioning refrigeration energy consumption. The indirect evaporative cooling unit comprises a heat exchange core, a primary side fan and a secondary side fan.

[0003] However, in the process of implementing the present application, the inventors have found that the prior art at least has the following problems:

[0004] When the indirect evaporative cooling unit is applied in winter, due to the large diurnal temperature difference in northern regions, when the temperature is slightly high during the day, the lower limit speed of the primary side fan can ensure that the secondary side supply air temperature of the indirect evaporative cooling unit is within the control target temperature range; however, in the extremely low temperature environment at night, the lower limit speed of the primary side fan that is the same as that during the day will cause the heat exchange capacity of the heat exchange core to be too large, thereby causing the secondary side supply air temperature to be too low, resulting in low temperature in the machine room. If the lower limit speed of the primary side fan is set according to the secondary side supply air temperature of the indirect evaporative cooling unit within the control target temperature range in the extremely low temperature environment at night, the lower limit speed of the primary side fan will be extremely low, and when the speed of the primary side fan is adjusted to the lower limit speed at the time when the temperature is high during the day, the heat exchange of the heat exchange core will fail, thereby causing the secondary side supply air temperature to be too high, resulting in high temperature in the machine room.

[0005] Therefore, how to avoid the phenomenon that the target device (such as a machine room) is low temperature or high temperature when the indirect evaporative cooling unit is operated in a large diurnal temperature difference scenario is a problem that needs to be solved by the technical personnel in the field at present. SUMMARY

[0006] Therefore, the purpose of the present application is to provide an indirect evaporative cooling unit control method, which can avoid the phenomenon that the target device (such as a machine room) is low temperature or high temperature when the indirect evaporative cooling unit is operated in a large diurnal temperature difference scenario.

[0007] Another object of the present application is to provide an indirect evaporative cooling unit, an indirect evaporative cooling unit control device, an indirect evaporative cooling unit control equipment and a computer readable storage medium, which can avoid the phenomenon of low or high temperature of the target equipment (such as a computer room) when the indirect evaporative cooling unit is running in a large diurnal temperature range scene.

[0008] In order to achieve the above object, the present application provides the following technical solutions:

[0009] An indirect evaporative cooling unit control method is applied to an indirect evaporative cooling unit, which comprises a heat exchange core and a primary side fan, and the method comprises the following steps:

[0010] Obtaining a first functional relationship between the air volume provided by the primary side fan and the primary side inlet air temperature of the indirect evaporative cooling unit;

[0011] Obtaining a second functional relationship between the minimum speed of the primary side fan and the air volume provided by the primary side fan;

[0012] According to the first functional relationship and the second functional relationship, a third functional relationship between the minimum speed and the primary side inlet air temperature is obtained;

[0013] Obtaining the real-time primary side inlet air temperature;

[0014] According to the third functional relationship and the real-time primary side inlet air temperature, the real-time minimum speed is determined.

[0015] Optionally, after obtaining the real-time primary side inlet air temperature, and before determining the real-time minimum speed according to the third functional relationship and the real-time primary side inlet air temperature, the method further comprises:

[0016] Determining whether the real-time primary side inlet air temperature is less than a preset temperature value;

[0017] If yes, the real-time minimum speed is determined according to the third functional relationship and the real-time primary side inlet air temperature.

[0018] Optionally, after determining whether the real-time primary side inlet air temperature is less than a preset temperature value, the method further comprises:

[0019] If no, the minimum speed is determined as a first preset speed value.

[0020] Optionally, determining the real-time minimum speed according to the third functional relationship and the real-time primary side inlet air temperature comprises:

[0021] When the real-time lowest rotating speed obtained according to the third function relationship and the real-time primary-side air inlet temperature is less than a second preset rotating speed value, the lowest rotating speed is determined as the second preset rotating speed value.

[0022] Optionally, the real-time lowest rotating speed is determined according to the third function relationship and the real-time primary-side air inlet temperature, including:

[0023] When the real-time lowest rotating speed obtained according to the third function relationship and the real-time primary-side air inlet temperature is greater than or equal to a third preset rotating speed value, the rotating speed of the primary-side air fan is controlled as the third preset rotating speed value.

[0024] Optionally, the first function relationship is a function relationship between the primary-side air inlet temperature and the air volume provided by the primary-side air fan under the rated refrigerating capacity of the indirect evaporative cooling unit.

[0025] An indirect evaporative cooling unit, including a heat exchange core, a primary-side air fan and a control device, the control device is used for determining the lowest rotating speed of the primary-side air fan according to any one of the above indirect evaporative cooling unit control methods.

[0026] An indirect evaporative cooling unit control device applied to an indirect evaporative cooling unit, the indirect evaporative cooling unit including a heat exchange core and a primary-side air fan, the indirect evaporative cooling unit control device including:

[0027] A first function relationship obtaining module is used for obtaining a first function relationship between the air volume provided by the primary-side air fan and a primary-side air inlet temperature of the indirect evaporative cooling unit;

[0028] A second function relationship obtaining module is used for obtaining a second function relationship between the lowest rotating speed of the primary-side air fan and the air volume provided by the primary-side air fan;

[0029] A third function relationship obtaining module is used for obtaining a third function relationship between the lowest rotating speed and the primary-side air inlet temperature according to the first function relationship and the second function relationship;

[0030] A primary-side air inlet temperature obtaining module is used for obtaining a real-time primary-side air inlet temperature;

[0031] A lowest rotating speed determining module is used for determining a real-time lowest rotating speed according to the third function relationship and the real-time primary-side air inlet temperature.

[0032] An indirect evaporative cooling unit control device, including:

[0033] A memory is used for storing a computer program;

[0034] A processor is configured to implement the steps of any of the indirect evaporative cooling unit control methods described above when executing the computer program.

[0035] A computer readable storage medium stores a computer program, which is configured to implement the steps of any of the indirect evaporative cooling unit control methods described above when executed by a processor.

[0036] The indirect evaporative cooling unit control method provided by the present application has the following beneficial effects:

[0037] By establishing a function relationship between the minimum speed of the primary-side fan and the primary-side air inlet temperature, the minimum speed of the primary-side fan is corresponded to the primary-side air inlet temperature, that is, the minimum speed of the primary-side fan in the embodiment is not a predetermined fixed value, but corresponds to the real-time primary-side air inlet temperature and changes according to the change of the real-time primary-side air inlet temperature. In this way, when the indirect evaporative cooling unit is applied in winter, the primary-side fan can have a minimum speed that is adapted to the daytime temperature during the day, and the primary-side fan can also have a minimum speed that is adapted to the nighttime temperature at night. Even in the case of large temperature difference between day and night, the minimum speed of the primary-side fan can meet the demand of adapting to the primary-side air inlet temperature, and the phenomenon of low or high temperature of the target equipment (such as a computer room) is avoided. Moreover, since the minimum speed of the primary-side fan can change with the change of the primary-side air inlet temperature, the scheme is especially suitable for the scene of low primary-side air inlet temperature. Since the temperature difference between the secondary-side air inlet and the primary-side air inlet is very large in the scene of low primary-side air inlet temperature, the air volume provided by the primary-side fan is very small. In this case, the speed of the primary-side fan is very sensitive to the primary-side air inlet temperature, that is, a small change of the primary-side air inlet temperature has a great influence on the air volume provided by the primary-side fan. Therefore, it is necessary to make the minimum speed of the primary-side fan change with the change of the primary-side air inlet temperature, so as to avoid the influence of the minimum speed of the primary-side fan on the air volume provided by the primary-side fan, and to avoid the large deviation between the secondary-side air supply temperature and the target control temperature, which leads to the phenomenon of low or high temperature of the target equipment (such as a computer room).

[0038] As can be seen, the indirect evaporative cooling unit control method provided by the present application can avoid the phenomenon of low or high temperature of the computer room when the indirect evaporative cooling unit is running in the scene of large temperature difference between day and night. The scheme is especially suitable for the scene of low primary-side air inlet temperature, for example, in winter, the temperature of the target equipment (such as a computer room) in winter can be ensured not to be low or high.

[0039] The control device of the indirect evaporative cooling unit provided by the present application is configured to determine the minimum speed of the primary-side fan according to the indirect evaporative cooling unit control method described above, and at least has the beneficial effects of the indirect evaporative cooling unit control method.

[0040] The indirect evaporative cooling unit control device provided by the present application corresponds to the indirect evaporative cooling unit control method, and has the same beneficial effects as the indirect evaporative cooling unit control method.

[0041] The indirect evaporative cooling unit control device provided by the present application corresponds to the indirect evaporative cooling unit control method, and has the same beneficial effects as the indirect evaporative cooling unit control method.

[0042] The computer readable storage medium provided by the present application corresponds to the indirect evaporative cooling unit control method, and has the same beneficial effects as the indirect evaporative cooling unit control method. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0044] Figure 1 The working principle schematic diagram of the indirect evaporative cooling unit provided by the present embodiment of the present application;

[0045] Figure 2 The flowchart of the indirect evaporative cooling unit control method provided by the present embodiment of the present application;

[0046] Figure 3 The flowchart of the indirect evaporative cooling unit control method provided by another embodiment of the present application;

[0047] Figure 4 The structure block diagram of the indirect evaporative cooling unit control device provided by the present embodiment of the present application;

[0048] Figure 5 The structure block diagram of the indirect evaporative cooling unit control device provided by the present embodiment of the present application;

[0049] Reference signs:

[0050] 1 - heat exchange core; 2 - primary side fan; 3 - secondary side fan; 4 - primary side air inlet; 5 - primary side air outlet; 6 - secondary side air inlet; 7 - secondary side air outlet;

[0051] 11 - first function relationship obtaining module; 12 - second function relationship obtaining module; 13 - third function relationship obtaining module; 14 - primary side air inlet temperature obtaining module; 15 - lowest speed determining module;

[0052] 21 - memory; 22 - processor. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0054] The core of the present application is to provide an indirect evaporative cooling unit control method, which can avoid the phenomenon of low temperature or high temperature of the target device (such as a computer room) when the indirect evaporative cooling unit is running in a large diurnal temperature range scene. Another core of the present application is to provide an indirect evaporative cooling unit, an indirect evaporative cooling unit control device, an indirect evaporative cooling unit control equipment and a computer readable storage medium, which can all avoid the phenomenon of low temperature or high temperature of the target device (such as a computer room) when the indirect evaporative cooling unit is running in a large diurnal temperature range scene.

[0055] It should be noted that the embodiments of the present application do not limit the specific structure and working principle of the indirect evaporative cooling unit, and those skilled in the art can refer to related technologies. The focus of the embodiments of the present application is to control the minimum speed of the primary side fan of the indirect evaporative cooling unit. Please refer to Figure 1 In some embodiments, the present application provides an indirect evaporative cooling unit, which includes a heat exchange core 1, a primary side fan 2, a secondary side fan 3, a primary side air inlet 4, a primary side air outlet 5, a secondary side air inlet 6 and a secondary side air outlet 7. The primary side fan 2 is arranged at the primary side air outlet 5, and the secondary side fan 3 is arranged at the secondary side air outlet 7. The primary side air enters from the primary side air inlet 4, is sent out from the primary side air outlet 5 after passing through the heat exchange core 1, the secondary side air enters from the secondary side air inlet 6, is sent out from the secondary side air outlet 7 after passing through the heat exchange core 1, and the primary side air and the secondary side air exchange heat at the heat exchange core 1. By controlling the speed of the primary side fan 2 and the secondary side fan 3 and the heat exchange amount of the heat exchange core 1, the temperature of the secondary side air is controlled, and the secondary side air is sent back to the target device such as a computer room, etc. from the secondary side air outlet 7 to ensure the airflow temperature in the target device (such as a computer room). When running in winter, only the primary side fan 2 and the secondary side fan 3 are running, the secondary side fan 3 ensures the airflow temperature in the target device (such as a computer room) by the temperature difference of the secondary side return air, and the primary side fan 2 controls the heat exchange amount of the heat exchange core 1 to control the secondary side air temperature.

[0056] Please refer to Figure 2The embodiment of the present application provides a kind of indirect evaporative cooling unit control method, it is applied to indirect evaporative cooling unit, indirect evaporative cooling unit includes heat exchange core and primary side fan, indirect evaporative cooling unit control method includes steps S1-S5:

[0057] S1: obtain the first function relationship of the air volume provided by primary side fan and the primary side inlet air temperature of indirect evaporative cooling unit.

[0058] S2: obtain the second function relationship of the minimum speed of primary side fan and the air volume provided by primary side fan.

[0059] S3: according to the first function relationship and the second function relationship, the third function relationship of the minimum speed of primary side fan and the primary side inlet air temperature is obtained.

[0060] S4: obtain real-time primary side inlet air temperature.

[0061] S5: according to the third function relationship and real-time primary side inlet air temperature, the minimum speed of primary side fan in real time is determined.

[0062] That is, the embodiment of the present application first determines the relationship between primary side inlet air temperature and the air volume provided by primary side fan, that is, the first function relationship;Secondly, the relationship between the minimum speed of primary side fan and the air volume provided by primary side fan is determined, that is, the second function relationship;Then, according to the two function relationships (that is, the first function relationship and the second function relationship), the relationship between the minimum speed of primary side fan and the primary side inlet air temperature is determined, that is, the third function relationship;Further, according to real-time primary side inlet air temperature and the third function relationship, the minimum speed of primary side fan corresponding to real-time primary side inlet air temperature is determined.

[0063] It can be seen that, by establishing the function relationship between the minimum speed of primary side fan and the primary side inlet air temperature, the minimum speed of primary side fan is corresponded to the primary side inlet air temperature in the embodiment of the present application, that is, the minimum speed of primary side fan is not a determined value preset, but corresponds to real-time primary side inlet air temperature, and changes according to the change of real-time primary side inlet air temperature.

[0064] In this way, when indirect evaporative cooling unit is applied in winter, during the day, primary side fan can have the minimum speed suitable for daytime temperature, and at night, primary side fan can also have the minimum speed suitable for nighttime temperature, even if the temperature difference between day and night is large, the demand that the minimum speed of primary side fan adapts to primary side inlet air temperature can be met, and the phenomenon of low temperature or high temperature of target equipment (such as computer room) is avoided.

[0065] Moreover, since the minimum rotating speed of the primary-side air blower can change with the primary-side air inlet temperature, the scheme is particularly suitable for a scenario of low primary-side air inlet temperature, because in the scenario of low primary-side air inlet temperature, the temperature difference between the secondary-side air inlet and the primary-side air inlet is very large, and therefore the air volume provided by the required primary-side air blower is very small, in this case, the rotating speed of the primary-side air blower is very sensitive to the primary-side air inlet temperature, that is, a small change in the primary-side air inlet temperature has a great impact on the air volume provided by the required primary-side air blower, and therefore, it is necessary to make the minimum rotating speed of the primary-side air blower change with the primary-side air inlet temperature, so as to avoid that the minimum rotating speed of the primary-side air blower affects the air volume provided by the primary-side air blower, and causes a large deviation of the secondary-side air supply temperature from the target control temperature, resulting in a low temperature or a high temperature of the target device (such as a computer room).

[0066] It can be seen that the indirect evaporative cooling unit control method provided by the embodiment of the present application can avoid the phenomenon of low temperature or high temperature of the computer room when the indirect evaporative cooling unit is running in a scenario of large diurnal temperature difference, and the scheme is particularly suitable for a scenario of low primary-side air inlet temperature, for example, in winter, the temperature of the target device (such as a computer room) in winter can be ensured not to be low or high.

[0067] It should be noted that the specific method of obtaining the first functional relationship between the air volume provided by the primary-side air blower and the primary-side air inlet temperature of the indirect evaporative cooling unit is not limited, and can be obtained by calculation or test, for example, under the condition that the target control temperature of the secondary-side air supply temperature is ensured and the preset refrigeration capacity is ensured, the air volume provided by the required primary-side air blower is determined by continuously changing the primary-side air inlet temperature, so that the first functional relationship between the primary-side air inlet temperature and the air volume provided by the primary-side air blower can be obtained.

[0068] In some embodiments, the first functional relationship is a functional relationship between the primary-side air inlet temperature and the air volume provided by the primary-side air blower obtained under the rated refrigeration capacity of the indirect evaporative cooling unit.

[0069] It can be understood that the minimum rotating speed of the primary-side air blower needs to ensure that the heat exchange amount of the heat exchange core meets the load demand of the target device (such as a computer room) at the corresponding primary-side air inlet temperature, and at the same time, the heat exchange amount of the heat exchange core should not be far from the load demand of the target device (such as a computer room). The first functional relationship between the primary-side air inlet temperature and the air volume provided by the primary-side air blower obtained by the embodiment under the rated refrigeration capacity of the indirect evaporative cooling unit, that is, when the primary-side air inlet temperature and the air volume provided by the primary-side air blower satisfy the first functional relationship, the heat exchange amount of the heat exchange core is equal to the rated refrigeration capacity, so as to make the heat exchange amount of the heat exchange core as small as possible while meeting the load demand of the target device (such as a computer room).

[0070] In addition, it can be understood that the air volume provided by the primary side air blower and the minimum rotating speed of the primary side air blower are in a linear relationship, and thus the second function relationship between the minimum rotating speed of the primary side air blower and the air volume provided by the primary side air blower can be obtained.

[0071] In addition, it can be understood that the air volume provided by the primary side air blower and the minimum rotating speed of the primary side air blower are in a linear relationship, and thus the second function relationship between the minimum rotating speed of the primary side air blower and the air volume provided by the primary side air blower can be obtained. Figure 3 In some embodiments, after obtaining the real-time primary side air inlet temperature, and before determining the real-time minimum rotating speed of the primary side air blower according to the third function relationship and the real-time primary side air inlet temperature, the method further comprises:

[0072] S6: determining whether the real-time primary side air inlet temperature is less than a preset temperature value.

[0073] If yes, S5 is executed: determining the real-time minimum rotating speed of the primary side air blower according to the third function relationship and the real-time primary side air inlet temperature.

[0074] From the above content, it can be understood that when the primary side air inlet temperature is low, the temperature difference between the secondary side air inlet and the primary side air inlet is very large, and the air volume provided by the primary side air blower is very small. In this case, the rotating speed of the primary side air blower is very sensitive to the primary side air inlet temperature. Therefore, in the embodiment, after obtaining the real-time primary side air inlet temperature, and before determining the real-time minimum rotating speed of the primary side air blower according to the third function relationship and the real-time primary side air inlet temperature, it is first determined whether the real-time primary side air inlet temperature is less than a preset temperature value. When the real-time primary side air inlet temperature is less than the preset temperature value, the real-time minimum rotating speed of the primary side air blower is determined according to the third function relationship and the real-time primary side air inlet temperature. That is, when the primary side air inlet temperature is less than the preset temperature value, the real-time minimum rotating speed of the primary side air blower changes with the change of the primary side air inlet temperature according to the third function relationship.

[0075] It should be noted that the preset temperature value is not limited in the embodiment, and can be set according to actual needs by those skilled in the art. It can be understood that the preset temperature value is a critical point at which the rotating speed of the primary side air blower is sensitive to the primary side air inlet temperature.

[0076] Further, it can be understood that the air volume provided by the primary side air blower and the minimum rotating speed of the primary side air blower are in a linear relationship, and thus the second function relationship between the minimum rotating speed of the primary side air blower and the air volume provided by the primary side air blower can be obtained. Figure 3 In some embodiments, after determining whether the real-time primary side air inlet temperature is less than the preset temperature value, the method further comprises:

[0077] S7: if no, determining the real-time minimum rotating speed of the primary side air blower as a first preset rotating speed value.

[0078] That is, when the primary side air inlet temperature is greater than or equal to the preset temperature value, the real-time minimum rotating speed of the primary side air fan no longer changes with the change of the primary side air inlet temperature, but is a determined first preset rotating speed value. That is, when the primary side air inlet temperature changes in the range of greater than or equal to the preset temperature value, the minimum rotating speed of the primary side air fan remains the first preset rotating speed value. It can be understood that when the primary side air inlet temperature is greater than a certain value, the temperature difference between the secondary side air inlet and the primary side air inlet is relatively reduced. In this case, the sensitivity of the rotating speed of the primary side air fan to the primary side air inlet temperature is reduced, that is, when the primary side air inlet temperature changes in the range of greater than or equal to the preset temperature value, the minimum rotating speed of the primary side air fan changes, and the influence on the secondary side air supply temperature is small. Therefore, in this case, the real-time minimum rotating speed of the primary side air fan is controlled to be the first preset rotating speed value, which can reduce the amount of calculation and simplify the control.

[0079] In addition, please refer to Figure 3 In some embodiments, the real-time minimum rotating speed of the primary side air fan is determined according to the third function relationship and the real-time primary side air inlet temperature, including:

[0080] S51: When the real-time minimum rotating speed of the primary side air fan obtained according to the third function relationship and the real-time primary side air inlet temperature is less than the second preset rotating speed value, the minimum rotating speed of the primary side air fan is determined to be the second preset rotating speed value.

[0081] That is, when the real-time minimum rotating speed of the primary side air fan obtained according to the third function relationship and the real-time primary side air inlet temperature is less than the second preset rotating speed value, the embodiment no longer makes the real-time minimum rotating speed of the primary side air fan be the rotating speed value corresponding to the primary side air inlet temperature obtained according to the third function relationship, but directly determines the real-time minimum rotating speed of the primary side air fan to be the second preset rotating speed value. Because it is known from the characteristics of the fan that when the rotating speed of the primary side air fan is lower than a certain rotating speed value, no airflow is generated even if the primary side air fan is running. Therefore, in the case that the real-time minimum rotating speed of the primary side air fan obtained according to the third function relationship and the real-time primary side air inlet temperature is less than the second preset rotating speed value, the minimum rotating speed of the primary side air fan is determined to be the second preset rotating speed value to ensure that the primary side air fan can generate airflow.

[0082] In addition, please refer to Figure 3 In some embodiments, the real-time minimum rotating speed of the primary side air fan is determined according to the third function relationship and the real-time primary side air inlet temperature, including:

[0083] S52: When the real-time minimum rotating speed of the primary side air fan obtained according to the third function relationship and the real-time primary side air inlet temperature is greater than or equal to the third preset rotating speed value, the rotating speed of the primary side air fan is controlled to be the third preset rotating speed value.

[0084] That is to say, when the lowest speed of the primary side fan in real time obtained according to the third function relationship and the primary side inlet air temperature in real time is greater than the third preset speed value, the embodiment no longer makes the lowest speed of the primary side fan in real time be the speed value corresponding to the primary side inlet air temperature obtained according to the third function relationship, but directly determines the lowest speed of the primary side fan in real time as the third preset speed value. Because when the primary side inlet air temperature is greater than a certain value, the temperature difference between the secondary side inlet air and the primary side inlet air is relatively reduced, in this case, the air volume provided by the primary side fan is no longer sensitive to the heat exchange amount of the heat exchange core, at this time, the normal fixed lowest speed of the primary side fan can be restored.

[0085] It should be noted that the specific size of the first preset speed value, the second preset speed value and the third preset speed value is not limited in the embodiment of the application, and can be set according to actual needs by those skilled in the art. In addition, in some embodiments, the first preset speed value and the third preset speed value are equal.

[0086] In addition to the above-mentioned indirect evaporative cooling unit control method, the present application also provides an indirect evaporative cooling unit, which comprises a heat exchange core, a primary side fan and a control device, and the control device is used to determine the lowest speed of the primary side fan according to the indirect evaporative cooling unit control method disclosed in any one of the above embodiments. The structures of other parts of the indirect evaporative cooling unit are described in the related art, and will not be described here.

[0087] The focus of the embodiment is that the control device of the indirect evaporative cooling unit determines the lowest speed of the primary side fan by using the indirect evaporative cooling unit control method disclosed in any one of the above embodiments, which at least includes the beneficial effects of the above-mentioned indirect evaporative cooling unit control method.

[0088] Corresponding to the above-mentioned indirect evaporative cooling unit control method embodiment, the embodiment of the present application also provides an indirect evaporative cooling unit control device, which can be mutually corresponding and referred to in the above-mentioned indirect evaporative cooling unit control method.

[0089] The indirect evaporative cooling unit control device is applied to an indirect evaporative cooling unit, and the indirect evaporative cooling unit comprises a heat exchange core and a primary side fan. Please refer to Figure 4 The indirect evaporative cooling unit control device comprises:

[0090] The first function relationship obtaining module 11 is used to obtain a first function relationship between the air volume provided by the primary side fan and the primary side inlet air temperature of the indirect evaporative cooling unit;

[0091] The second function relationship obtaining module 12 is used to obtain a second function relationship between the lowest speed of the primary side fan and the air volume provided by the primary side fan;

[0092] The third function relationship obtaining module 13 is configured to obtain a third function relationship between the minimum rotating speed of the primary-side air blower and the primary-side air inlet temperature according to the first function relationship and the second function relationship.

[0093] The primary-side air inlet temperature obtaining module 14 is configured to obtain a real-time primary-side air inlet temperature.

[0094] The minimum rotating speed determining module 15 is configured to determine the minimum rotating speed of the real-time primary-side air blower according to the third function relationship and the real-time primary-side air inlet temperature.

[0095] It can be seen that the indirect evaporative cooling unit control device corresponds to the indirect evaporative cooling unit control method described above, and thus has the same beneficial effects as the indirect evaporative cooling unit control method described above.

[0096] Corresponding to the above indirect evaporative cooling unit control method embodiment, please refer to Figure 5 The present application further provides an indirect evaporative cooling unit control device, which comprises a memory 21 and a processor 22, the memory 21 is configured to store a computer program, and the processor 22 is configured to execute the computer program to realize the steps of the indirect evaporative cooling unit control method disclosed in any one of the above embodiments.

[0097] For the introduction of the indirect evaporative cooling unit control device provided by the present application, please refer to the above indirect evaporative cooling unit control method embodiments, which will not be described here again. The indirect evaporative cooling unit control device has the same beneficial effects as the indirect evaporative cooling unit control method described above.

[0098] Corresponding to the above indirect evaporative cooling unit control method embodiment, the present application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the steps of the indirect evaporative cooling unit control method disclosed in any one of the above embodiments.

[0099] The computer readable storage medium can include a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0100] For the introduction of the computer readable storage medium provided by the present application, please refer to the above indirect evaporative cooling unit control method embodiments, which will not be described here again. The computer readable storage medium has the same beneficial effects as the indirect evaporative cooling unit control method described above.

[0101] It should be further noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions.

[0102] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0103] The indirect evaporative cooling unit, the control method and device thereof, the equipment and the storage medium provided by the present application are described in detail above. The principles and implementation modes of the present application are described by applying specific examples in this paper, and the above embodiment description is only used to help understand the method and core idea of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A control method for an indirect evaporative cooling unit, characterized in that, The method for controlling an indirect evaporative cooling unit includes: (The indirect evaporative cooling unit includes a heat exchange core and a primary side fan.) A first functional relationship is obtained between the air volume provided by the primary side fan and the primary side inlet air temperature of the indirect evaporative cooling unit; Obtain a second functional relationship between the minimum rotational speed of the primary side fan and the air volume provided by the primary side fan; Based on the first and second functional relationships, a third functional relationship between the minimum rotational speed and the primary side inlet air temperature is obtained; Obtain the real-time primary side intake air temperature; The minimum rotational speed is determined in real time based on the third functional relationship and the real-time primary side inlet air temperature. After obtaining the real-time primary side inlet air temperature, and before determining the real-time minimum rotational speed based on the third functional relationship and the real-time primary side inlet air temperature, the method further includes: Determine whether the real-time primary side air inlet temperature is lower than the preset temperature value; If so, the minimum rotational speed in real time is determined based on the third functional relationship and the real-time primary side air inlet temperature; If not, then the minimum rotational speed is determined to be the first preset rotational speed value; The first functional relationship is the functional relationship between the primary side inlet air temperature and the air volume provided by the primary side fan, obtained under the rated cooling capacity of the indirect evaporative cooling unit.

2. The control method for an indirect evaporative cooling unit according to claim 1, characterized in that, Based on the third functional relationship and the real-time primary side inlet air temperature, the real-time minimum rotational speed is determined, including: When the real-time minimum rotational speed obtained based on the third functional relationship and the real-time primary side air inlet temperature is less than the second preset rotational speed value, the minimum rotational speed is determined to be the second preset rotational speed value.

3. The control method for an indirect evaporative cooling unit according to claim 1, characterized in that, Based on the third functional relationship and the real-time primary side inlet air temperature, the real-time minimum rotational speed is determined, including: When the real-time minimum speed obtained based on the third functional relationship and the real-time primary side air inlet temperature is greater than or equal to the third preset speed value, the speed of the primary side fan is controlled to be the third preset speed value.

4. An indirect evaporative cooling unit, characterized in that, It includes a heat exchange core, a primary side fan, and a control device, wherein the control device is used to determine the minimum speed of the primary side fan according to the indirect evaporative cooling unit control method according to any one of claims 1-3.

5. A control device for an indirect evaporative cooling unit, characterized in that, This is applied to an indirect evaporative cooling unit, which includes a heat exchange core and a primary side fan. The control device for the indirect evaporative cooling unit includes: The first functional relationship acquisition module is used to obtain the first functional relationship between the air volume provided by the primary side fan and the primary side inlet air temperature of the indirect evaporative cooling unit. The second functional relationship acquisition module is used to obtain a second functional relationship between the minimum speed of the primary side fan and the air volume provided by the primary side fan; The third functional relationship acquisition module is used to obtain a third functional relationship between the minimum rotational speed and the primary side air intake temperature based on the first functional relationship and the second functional relationship; A primary side air intake temperature acquisition module is used to acquire the real-time primary side air intake temperature; The minimum speed determination module is used to determine the real-time minimum speed based on the third functional relationship and the real-time primary side inlet air temperature. After obtaining the real-time primary side inlet air temperature, and before determining the real-time minimum rotational speed based on the third functional relationship and the real-time primary side inlet air temperature, the method further includes: Determine whether the real-time primary side air inlet temperature is lower than the preset temperature value; If so, the minimum rotational speed in real time is determined based on the third functional relationship and the real-time primary side air inlet temperature; If not, then the minimum rotational speed is determined to be the first preset rotational speed value; The first functional relationship is the functional relationship between the primary side inlet air temperature and the air volume provided by the primary side fan, obtained under the rated cooling capacity of the indirect evaporative cooling unit.

6. A control device for an indirect evaporative cooling unit, characterized in that, include: Memory, used to store computer programs; A processor, configured to execute the computer program to implement the steps of the indirect evaporative cooling unit control method as described in any one of claims 1 to 3.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the indirect evaporative cooling unit control method as described in any one of claims 1 to 3.

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