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

Abstract

The invention discloses an indirect evaporative cooling unit, a control method, device and equipment thereof and a storage medium, the control method of the indirect evaporative cooling unit is applied to the indirect evaporative cooling unit, and the indirect evaporative cooling unit comprises a heat exchange core body and a primary side fan. The indirect evaporative cooling unit control method comprises the steps that a first function relation between the air volume provided by a primary side draught fan and the primary side air inlet temperature of the indirect evaporative cooling unit is obtained; obtaining a second function relationship between the lowest rotating speed of the primary side fan and the air volume provided by the primary side fan; according to the first function relation and the second function relation, a third function relation between the lowest rotating speed of the primary side fan and the primary side air inlet temperature is obtained; the real-time primary side air inlet temperature is obtained; and according to the third function relation and the real-time primary side air inlet temperature, the real-time minimum rotating speed of the primary side fan is determined. And the phenomenon of low temperature or high temperature of a machine room when the indirect evaporative cooling unit operates in a scene with large day and night temperature difference can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of indirect evaporative cooling, and more specifically, to a control method for an indirect evaporative cooling unit. In addition, the present invention 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 Art

[0002] In order to reduce the PUE (Power Usage Effectiveness) of the data center, PUE is the ratio of the total energy consumption of the data center to the IT load consumption. Indirect evaporative cooling units are widely used in data centers. Indirect evaporative cooling units can obtain cooling from the natural environment, thereby greatly reducing the energy consumption of air conditioning and refrigeration. Indirect evaporative cooling units include heat exchange cores, primary side fans and secondary side fans.

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

[0004] When the indirect evaporative cooling unit is used in winter, due to the large temperature difference between day and night in the northern region, when the temperature is slightly higher during the day, the appropriate lower limit speed of the primary fan can ensure that the secondary air supply temperature of the indirect evaporative cooling unit is within the control target temperature range; however, in the extremely low temperature environment at night, the same lower limit speed of the primary fan as during the day will cause the heat exchange of the heat exchange core to be too large, which will cause the secondary air supply temperature to be too low, resulting in low temperature in the machine room. If the lower limit speed of the primary fan is set based on the secondary air supply temperature of the indirect evaporative cooling unit being within the control target temperature in the extremely low temperature environment at night, the lower limit speed of the primary fan will be extremely low. When the temperature is high during the day, adjusting the speed of the primary fan to the lower limit speed will cause the heat exchange of the heat exchange core to fail, which will cause the secondary air supply temperature to be too high, resulting in high temperature in the machine room.

[0005] Therefore, how to avoid the phenomenon of low or high temperature of target equipment (such as a computer room) when the indirect evaporative cooling unit is operated in a scenario with a large temperature difference between day and night is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0006] In view of this, an object of the present invention is to provide an indirect evaporative cooling unit control method, which can avoid the phenomenon of low or high temperature of target equipment (such as a computer room) when the indirect evaporative cooling unit is operated in a scene with a large temperature difference between day and night.

[0007] Another object of the present invention is to provide an indirect evaporative cooling unit, an indirect evaporative cooling unit control device, an indirect evaporative cooling unit control device 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 operating in a scenario with a large temperature difference between day and night.

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

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

[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 rotation 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 rotation speed and the primary side inlet air temperature is obtained;

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

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

[0015] Optionally, after acquiring 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 includes:

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

[0017] If so, the real-time minimum rotation 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 includes:

[0019] If not, the minimum rotation speed is determined to be the first preset rotation speed value.

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

[0021] When the real-time minimum speed obtained according to the third functional relationship and the real-time primary-side inlet air temperature is less than the second preset speed value, the minimum speed is determined to be the second preset speed value.

[0022] Optionally, determining the real-time minimum rotation speed according to the third functional relationship and the real-time primary-side inlet air temperature includes:

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

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

[0025] An indirect evaporative cooling unit comprises a heat exchange core, a primary side fan and a control device, wherein the control device is used to determine the minimum rotation speed of the primary side fan according to any one of the above-mentioned indirect evaporative cooling unit control methods.

[0026] An indirect evaporative cooling unit control device 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 device comprises:

[0027] A first functional relationship obtaining module, used to obtain 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;

[0028] A second functional relationship obtaining module, used to obtain a second functional relationship between the minimum rotation speed of the primary side fan and the air volume provided by the primary side fan;

[0029] A third functional relationship obtaining module, configured to obtain a third functional relationship between the minimum rotational speed and the primary-side inlet air temperature according to the first functional relationship and the second functional relationship;

[0030] A primary side inlet air temperature acquisition module, used to acquire the real-time primary side inlet air temperature;

[0031] The minimum speed determination module is used to determine the real-time minimum speed according to the third functional relationship and the real-time primary-side inlet air temperature.

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

[0033] Memory for storing computer programs;

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

[0035] A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of any one of the above-mentioned indirect evaporative cooling unit control methods are implemented.

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

[0037] By establishing a functional relationship between the minimum speed of the primary fan and the primary inlet air temperature, the minimum speed of the primary fan is matched to the primary inlet air temperature. That is, the minimum speed of the primary fan in this embodiment is not a predetermined fixed value, but corresponds to the real-time primary inlet air temperature, and changes according to the change of the real-time primary inlet air temperature. In this way, when the indirect evaporative cooling unit is used in winter, during the day, the primary fan can have a minimum speed that is adapted to the daytime temperature, and at night, the primary fan can also have a minimum speed that is adapted to the nighttime temperature. Even in the case of a large temperature difference between day and night, the minimum speed of the primary fan can meet the requirement of adapting to the primary inlet air temperature, thereby avoiding the phenomenon of low or high temperature of the target equipment (such as the machine room). Moreover, since the minimum speed of the primary side fan can change with the change of the primary side inlet temperature, this solution is particularly suitable for the scenario of low primary side inlet temperature. In the scenario of low primary side inlet temperature, the temperature difference between the secondary side inlet and the primary side inlet is very large, so the air volume required 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 inlet temperature, that is, a small change in the primary side inlet temperature has a great influence on the required 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 inlet temperature to avoid the air volume provided by the primary side fan being affected by the minimum speed of the primary side fan, resulting in a large deviation between the secondary side supply air temperature and the target control temperature, resulting in low or high temperature of the target equipment (such as the computer room).

[0038] It can be seen that the indirect evaporative cooling unit control method provided by the present invention can avoid the phenomenon of low or high temperature in the machine room when the indirect evaporative cooling unit is operating in a scenario with a large temperature difference between day and night. This solution is particularly suitable for the scenario with low temperature of the primary side inlet air. For example, when used in winter, it can ensure that the temperature of the target equipment (such as the machine room) in winter does not appear low or high temperature.

[0039] The indirect evaporative cooling unit provided by the present invention has a control device for determining the minimum rotation speed of the primary side fan according to the above-mentioned indirect evaporative cooling unit control method, and at least includes the beneficial effects of the above-mentioned indirect evaporative cooling unit control method.

[0040] The indirect evaporative cooling unit control device provided by the present invention corresponds to the above-mentioned 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 invention corresponds to the above-mentioned 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 invention corresponds to the above-mentioned indirect evaporative cooling unit control method and has the same beneficial effects as the indirect evaporative cooling unit control method. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0044] Figure 1 A schematic diagram of the working principle of an indirect evaporative cooling unit provided by a specific embodiment of the present invention;

[0045] Figure 2 A flow chart of a control method for an indirect evaporative cooling unit provided by a specific embodiment of the present invention;

[0046] Figure 3 A flow chart of a control method for an indirect evaporative cooling unit provided by another specific embodiment of the present invention;

[0047] Figure 4 A structural block diagram of an indirect evaporative cooling unit control device provided by a specific embodiment of the present invention;

[0048] Figure 5 This is a structural block diagram of an indirect evaporative cooling unit control device provided in a specific embodiment of the present invention.

[0049] Reference numerals:

[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 acquisition module; 12-second function relationship acquisition module; 13-third function relationship acquisition module; 14-primary side inlet air temperature acquisition module; 15-minimum speed determination module;

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

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0055] It should be noted that the embodiments of the present invention do not limit the specific structure and working principle of the indirect evaporative cooling unit. Those skilled in the art may refer to relevant technologies. The embodiment of the present invention focuses on controlling the minimum speed of the primary side fan of the indirect evaporative cooling unit. Figure 1 In some embodiments, the present invention 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 wind enters from the primary side air inlet 4, passes through the heat exchange core 1 and is sent out from the primary side air outlet 5, and the secondary side wind enters from the secondary side air inlet 6, passes through the heat exchange core 1 and is sent out from the secondary side air outlet 7. The primary side wind and the secondary side wind perform heat exchange at the heat exchange core 1. By controlling the rotation speeds 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 wind is controlled, and the secondary side wind is sent back to the target device, such as the machine room, from the secondary side air outlet 7 to ensure the air flow temperature in the target device (such as the machine room). During winter operation, only the primary side fan 2 and the secondary side fan 3 are operated. The secondary side fan 3 ensures the air flow temperature in the target equipment (such as the machine room) through the secondary side supply and return air temperature difference. The primary side fan 2 controls the heat exchange capacity of the heat exchange core 1 and thus controls the secondary side supply air temperature.

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

[0057] S1: Obtain 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.

[0058] S2: Obtain a second functional relationship between the minimum rotation speed of the primary side fan and the air volume provided by the primary side fan.

[0059] S3: According to the first functional relationship and the second functional relationship, a third functional relationship between the minimum rotation speed of the primary side fan and the primary side inlet air temperature is obtained.

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

[0061] S5: Determine the real-time minimum rotation speed of the primary-side fan according to the third functional relationship and the real-time primary-side inlet air temperature.

[0062] That is to say, the embodiment of the present invention first determines the relationship between the primary side inlet air temperature and the air volume provided by the primary side fan, that is, the first functional relationship; then determines the relationship between the minimum speed of the primary side fan and the air volume provided by the primary side fan, that is, the second functional relationship; then, based on the two functional relationships (that is, the first functional relationship and the second functional relationship), the relationship between the minimum speed of the primary side fan and the primary side inlet air temperature is determined, that is, the third functional relationship; and then, based on the real-time primary side inlet air temperature and the third functional relationship, the minimum speed of the primary side fan corresponding to the real-time primary side inlet air temperature is determined.

[0063] It can be seen that the embodiment of the present invention establishes a functional relationship between the minimum speed of the primary-side fan and the primary-side inlet air temperature, thereby making the minimum speed of the primary-side fan correspond to the primary-side inlet air temperature. That is, the minimum speed of the primary-side fan in this embodiment is not a predetermined value, but corresponds to the real-time primary-side inlet air temperature and changes according to changes in the real-time primary-side inlet air temperature.

[0064] In this way, when the indirect evaporative cooling unit is used in winter, during the day, the primary side fan can have a minimum speed that is adapted to the daytime temperature, and at night, the primary side fan can also have a minimum speed that is adapted to the night temperature. Even if the temperature difference between day and night is large, the minimum speed of the primary side fan can be met to adapt to the primary side inlet air temperature, thereby avoiding the phenomenon of low or high temperature in the target equipment (such as the computer room).

[0065] Moreover, since the minimum speed of the primary side fan can change with the change of the primary side inlet temperature, this solution is particularly suitable for the scenario of low primary side inlet temperature. In the scenario of low primary side inlet temperature, the temperature difference between the secondary side inlet and the primary side inlet is very large, so the air volume required 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 inlet temperature, that is, a small change in the primary side inlet temperature has a great influence on the required 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 inlet temperature to avoid the air volume provided by the primary side fan being affected by the minimum speed of the primary side fan, resulting in a large deviation between the secondary side supply air temperature and the target control temperature, resulting in low or high temperature of the target equipment (such as the computer room).

[0066] It can be seen that the indirect evaporative cooling unit control method provided in the embodiment of the present invention can avoid the phenomenon of low or high temperature in the computer room when the indirect evaporative cooling unit is operating in a scenario with a large temperature difference between day and night. This solution is particularly suitable for the scenario with low temperature of the primary side inlet air. For example, when used in winter, it can ensure that the temperature of the target equipment (such as the computer room) in winter does not appear low or high temperature.

[0067] It should be noted that the present embodiment does not limit the specific method for obtaining 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, and can be obtained by calculation or testing. For example, under the condition of ensuring that the target control temperature of the secondary side supply air temperature is constant and under the preset cooling capacity, the required air volume provided by the primary side fan is determined by continuously changing the primary side inlet air temperature, thereby obtaining the first functional relationship between the primary side inlet air temperature and the air volume provided by the primary side fan.

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

[0069] It is understandable that the minimum speed of the primary side fan needs to ensure that the heat exchange of the heat exchange core meets the load requirements of the target equipment (such as a machine room) at the corresponding primary side inlet air temperature, and at the same time, the heat exchange of the heat exchange core must not exceed the load requirements of the target equipment (such as a machine room). This embodiment obtains the first functional relationship between the primary side inlet air temperature and the air volume provided by the primary side fan under the rated cooling capacity of the indirect evaporative cooling unit, that is, when the primary side inlet air temperature and the air volume provided by the primary side fan meet the first functional relationship, the heat exchange of the heat exchange core is equal to the rated cooling capacity, so that the heat exchange of the heat exchange core meets the load requirements of the target equipment (such as a machine room) while making the heat exchange of the heat exchange core as small as possible.

[0070] In addition, it can be understood that there is a linear relationship between the air volume provided by the primary side fan and the minimum rotation speed of the primary side fan. Therefore, a second functional relationship between the minimum rotation speed of the primary side fan and the air volume provided by the primary side fan can be obtained.

[0071] Also, please refer to Figure 3 In some embodiments, after obtaining the real-time primary side inlet air temperature and before determining the real-time minimum speed of the primary side fan according to the third functional relationship and the real-time primary side inlet air temperature, it also includes:

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

[0073] If yes, execute S5: determine the real-time minimum rotation speed of the primary-side fan according to the third functional relationship and the real-time primary-side inlet air temperature.

[0074] As can be seen from the above content, when the primary side inlet temperature is low, due to the large temperature difference between the secondary side inlet and the primary side inlet, the required air volume provided by the primary side fan is very small. In this case, the rotation speed of the primary side fan is very sensitive to the primary side inlet temperature. Therefore, after obtaining the real-time primary side inlet temperature and before determining the real-time minimum rotation speed of the primary side fan according to the third functional relationship and the real-time primary side inlet temperature, this embodiment first determines whether the real-time primary side inlet temperature is less than the preset temperature value. When the real-time primary side inlet temperature is less than the preset temperature value, the real-time minimum rotation speed of the primary side fan is determined according to the third functional relationship and the real-time primary side inlet temperature. That is, when the primary side inlet temperature is less than the preset temperature value, the real-time minimum rotation speed of the primary side fan is controlled to change according to the third functional relationship as the primary side inlet temperature changes.

[0075] It should be noted that the present embodiment does not limit the preset temperature value, and those skilled in the art can set it according to actual needs. It is understandable that the preset temperature value is the critical point at which the speed of the primary side fan is sensitive to the primary side inlet air temperature.

[0076] For further information, please refer to Figure 3 In some embodiments, after determining whether the real-time primary side inlet air temperature is less than a preset temperature value, the method further includes:

[0077] S7: If not, determine that the real-time minimum speed of the primary side fan is the first preset speed value.

[0078] That is to say, when the primary side air inlet temperature is greater than or equal to the preset temperature value, the real-time minimum speed of the primary side fan no longer changes with the change of the primary side air inlet temperature, but is a determined first preset speed value. That is, when the primary side air inlet temperature changes within a range greater than or equal to the preset temperature value, the minimum speed of the primary side fan remains at the first preset 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 speed of the primary side fan is less sensitive to the primary side air inlet temperature, that is, as the primary side air inlet temperature changes within a range greater than or equal to the preset temperature value, the change in the minimum speed of the primary side fan has less effect on the secondary side supply air temperature. Therefore, in this case, the real-time minimum speed of the primary side fan is controlled to be the first preset speed value, which can reduce the amount of calculation and simplify the control.

[0079] Also, please refer to Figure 3 In some embodiments, determining the real-time minimum speed of the primary side fan according to the third functional relationship and the real-time primary side inlet air temperature includes:

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

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

[0082] Also, please refer to Figure 3 In some embodiments, determining the real-time minimum speed of the primary side fan according to the third functional relationship and the real-time primary side inlet air temperature includes:

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

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

[0085] It should be noted that the embodiments of the present invention do not limit the specific values ​​of the first preset speed value, the second preset speed value, and the third preset speed value, and those skilled in the art may set them according to actual needs. 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 invention also provides an indirect evaporative cooling unit, which includes a heat exchange core, a primary side fan and a control device, and the control device is used to determine the minimum speed of the primary side fan according to the indirect evaporative cooling unit control method disclosed in any one of the above-mentioned embodiments. The structures of other parts of the indirect evaporative cooling unit can be referred to the relevant technology, which will not be repeated here.

[0087] The focus of this embodiment is that the control device of the indirect evaporative cooling unit uses the indirect evaporative cooling unit control method disclosed in any of the above embodiments to determine the minimum speed of the primary side fan, which at least includes the beneficial effects of the above indirect evaporative cooling unit control method.

[0088] Corresponding to the above indirect evaporative cooling unit control method embodiment, the embodiment of the present invention also provides an indirect evaporative cooling unit control device. The indirect evaporative cooling unit control device described below and the indirect evaporative cooling unit control method described above can be referenced to each other.

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

[0090] A first functional relationship obtaining module 11 is used to obtain 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;

[0091] A second functional relationship obtaining module 12 is used to obtain a second functional relationship between the minimum rotation speed of the primary side fan and the air volume provided by the primary side fan;

[0092] A third functional relationship obtaining module 13, used to obtain a third functional relationship between the minimum rotation speed of the primary side fan and the primary side inlet air temperature according to the first functional relationship and the second functional relationship;

[0093] A primary side inlet air temperature acquisition module 14 is used to acquire the real-time primary side inlet air temperature;

[0094] The minimum speed determination module 15 is used to determine the real-time minimum speed of the primary-side fan according to the third functional relationship and the real-time primary-side inlet air 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 therefore, the indirect evaporative cooling unit control device 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 invention also provides an indirect evaporative cooling unit control device, which includes a memory 21 and a processor 22, the memory 21 is used to store computer programs; the processor 22 is used to implement the steps of the indirect evaporative cooling unit control method disclosed in any one of the above embodiments when executing the computer program.

[0097] For the introduction of the indirect evaporative cooling unit control device provided by the present invention, please refer to the above-mentioned indirect evaporative cooling unit control method embodiment, which will not be repeated here. The indirect evaporative cooling unit control device has the same beneficial effects as the above-mentioned indirect evaporative cooling unit control method.

[0098] Corresponding to the above indirect evaporative cooling unit control method embodiments, the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the indirect evaporative cooling unit control method disclosed in any one of the above embodiments are implemented.

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

[0100] For an introduction to the computer-readable storage medium provided by the present invention, please refer to the above-mentioned indirect evaporative cooling unit control method embodiment, which will not be repeated here. The computer-readable storage medium has the same beneficial effects as the above-mentioned indirect evaporative cooling unit control method.

[0101] It should also be noted that, in this specification, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

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

[0103] The above is a detailed introduction to the indirect evaporative cooling unit and its control method, device, equipment and storage medium provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A control method for an indirect evaporative cooling unit, characterized in that: Applied to an indirect evaporative cooling unit, the indirect evaporative cooling unit includes a heat exchange core and a primary side fan, and the control method of the indirect evaporative cooling unit includes: 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; Obtaining a second functional relationship between the minimum rotation speed of the primary side fan and the air volume provided by the primary side fan; According to the first functional relationship and the second functional relationship, a third functional relationship between the minimum rotation speed and the primary side inlet air temperature is obtained; Obtaining the real-time primary side inlet air temperature; The real-time minimum rotation speed is determined according to the third functional relationship and the real-time primary-side inlet air temperature.

2. The indirect evaporative cooling unit control method according to claim 1, characterized in that: After acquiring 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 includes: Determine whether the real-time primary side inlet air temperature is less than a preset temperature value; If so, the real-time minimum rotation speed is determined according to the third functional relationship and the real-time primary-side inlet air temperature.

3. The indirect evaporative cooling unit control method according to claim 2, characterized in that: After determining whether the real-time primary side inlet air temperature is less than a preset temperature value, the method further includes: If not, the minimum rotation speed is determined to be the first preset rotation speed value.

4. The indirect evaporative cooling unit control method according to any one of claims 1 to 3, characterized in that: Determining the real-time minimum rotation speed according to the third functional relationship and the real-time primary-side inlet air temperature includes: When the real-time minimum speed obtained according to the third functional relationship and the real-time primary-side inlet air temperature is less than the second preset speed value, the minimum speed is determined to be the second preset speed value.

5. The indirect evaporative cooling unit control method according to any one of claims 1 to 3, characterized in that: Determining the real-time minimum rotation speed according to the third functional relationship and the real-time primary-side inlet air temperature includes: When the real-time minimum speed obtained according to the third functional relationship and the real-time primary-side inlet air temperature is greater than or equal to a third preset speed value, the speed of the primary-side fan is controlled to be the third preset speed value.

6. The indirect evaporative cooling unit control method according to claim 1, characterized in that: The first functional relationship is a functional relationship between the primary side inlet air temperature and the air volume provided by the primary side fan obtained under the condition of the rated cooling capacity of the indirect evaporative cooling unit.

7. An indirect evaporative cooling unit, characterized in that: It comprises a heat exchange core, a primary side fan and a control device, wherein the control device is used to determine the minimum rotation speed of the primary side fan according to the indirect evaporative cooling unit control method according to any one of claims 1 to 6.

8. An indirect evaporative cooling unit control device, characterized in that: Applied to an indirect evaporative cooling unit, the indirect evaporative cooling unit includes a heat exchange core and a primary side fan, and the indirect evaporative cooling unit control device includes: A first functional relationship obtaining module, used to obtain 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; A second functional relationship obtaining module, used to obtain a second functional relationship between the minimum rotation speed of the primary side fan and the air volume provided by the primary side fan; A third functional relationship obtaining module, configured to obtain a third functional relationship between the minimum rotational speed and the primary-side inlet air temperature according to the first functional relationship and the second functional relationship; A primary side inlet air temperature acquisition module, used to acquire the real-time primary side inlet air temperature; The minimum speed determination module is used to determine the real-time minimum speed according to the third functional relationship and the real-time primary-side inlet air temperature.

9. An indirect evaporative cooling unit control device, characterized in that: include: Memory for storing computer programs; A processor is used to implement the steps of the indirect evaporative cooling unit control method according to any one of claims 1 to 6 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the indirect evaporative cooling unit control method according to any one of claims 1 to 6 are implemented.

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