Air conditioning unit control method and device, electronic equipment and readable storage medium

Abstract

The invention relates to an air conditioning unit control method and device, electronic equipment and a readable storage medium, and belongs to the technical field of air conditioner control. The method comprises the steps that a compressor, a condensation fan and a spraying water pump of the air conditioning unit are started; a condensation fan and a spraying water pump are operated according to the environment wet bulb temperature and the corresponding initial frequency, and a compressor is operated according to the environment relative humidity and the corresponding initial frequency; the size relation between the environment wet bulb temperature and the preset environment wet bulb temperature is determined, and if the environment wet bulb temperature is not smaller than the preset environment wet bulb temperature, the frequency of a condensation fan is controlled through a target high pressure method; and if the environment wet-bulb temperature is smaller than the preset environment wet-bulb temperature, the frequency of a condensation fan and the frequency of a spraying water pump are controlled through a load method. The problem that the energy efficiency is low due to the fact that a condensation fan and a spraying water pump cannot be adjusted in a self-adaptive mode when an existing evaporation cooling water chilling unit operates under the partial load or the low load is solved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning control, and in particular to an air conditioning unit control method, device, electronic device and storable medium. Background Art

[0002] With the acceleration of industrialization and urbanization, refrigeration equipment is increasingly used in various industries, especially in data centers, commercial buildings, chemical production and other fields. Evaporative chillers have gradually become the mainstream choice due to their high efficiency and environmental protection. Evaporative chillers use the principle of water evaporation to absorb heat, remove heat from circulating water and discharge it into the atmosphere, achieving effective cooling of the air-conditioning system. However, in actual operation, especially under partial load or low load conditions, the energy efficiency performance of evaporative chillers is often poor.

[0003] The design of the evaporative cooling chillers in the prior art generally focuses on performance optimization when running at full load, but pays insufficient attention to improving energy efficiency under partial load or low load conditions. Specifically, these units have obvious defects in the control strategies of the condensing fan and the spray water pump. As a key component of the unit's heat dissipation system, the speed of the condensing fan is often set to a fixed value or is only adjusted by a simple on / off control, and cannot be finely adjusted according to the actual load changes of the unit. Similarly, the flow rate and pressure of the spray water pump are mostly fixed, which fails to achieve dynamic matching with the operating status of the unit and cannot be controlled adaptively. As a result, when running at low load, the condensing fan may run at too high a speed, causing unnecessary energy waste; and the spray water pump may cause uneven distribution of water mist due to excessive flow, affecting the evaporative cooling effect and further reducing the overall energy efficiency of the unit. In addition, long-term operation under non-optimal conditions will also accelerate equipment wear, shorten the service life of the unit, and increase maintenance costs. In summary, when the existing evaporative cooling chillers are operated at part load or low load, the condensing fan and the spray water pump cannot be adjusted adaptively, resulting in low energy efficiency.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The present application provides an air conditioning unit control method, device, electronic device and storable medium to solve the technical problem that when the above-mentioned evaporative cooling chiller is operating at partial load or low load, the condensing fan and the spray water pump cannot be adaptively adjusted, resulting in low energy efficiency.

[0006] According to one aspect of an embodiment of the present application, the present application provides a method for controlling an air-conditioning unit, including: turning on the compressor, condensing fan and spray water pump of the air-conditioning unit; operating the condensing fan and the spray water pump at a corresponding initial frequency according to the ambient wet-bulb temperature, and operating the compressor at a corresponding initial frequency according to the ambient relative humidity; determining the relationship between the ambient wet-bulb temperature and a preset ambient wet-bulb temperature, and if the ambient wet-bulb temperature is not less than the preset ambient wet-bulb temperature, controlling the frequency of the condensing fan by a target high pressure method; if the ambient wet-bulb temperature is less than the preset ambient wet-bulb temperature, controlling the frequency of the condensing fan and the frequency of the spray water pump by a load method.

[0007] Optionally, starting the compressor, condensing fan and spray water pump of the air-conditioning unit includes: parsing a preset timing to obtain initial operating conditions corresponding to the compressor, condensing fan and spray water pump; wherein the initial operating conditions of the compressor include a first start signal, the initial operating conditions of the condensing fan include the compressor reaching a preset pressure, and the initial operating conditions of the spray water pump include the speed of the condensing fan reaching a preset speed; starting the compressor according to the first start signal and monitoring the pressure of the compressor; when the pressure of the compressor reaches the preset pressure value, starting the condensing fan through a second start signal, and monitoring the speed of the condensing fan; when the speed of the condensing fan reaches the preset speed, starting the spray water pump through a third start signal to initialize the air-conditioning unit.

[0008] Optionally, operating the condensing fan and the spray water pump at corresponding initial frequencies according to the ambient wet-bulb temperature, and operating the compressor at corresponding initial frequencies according to the ambient relative humidity, includes: obtaining the current ambient wet-bulb temperature and the current ambient relative humidity; determining a first initial frequency of the fan corresponding to the current ambient wet-bulb temperature, determining a second initial frequency of the water pump corresponding to the current ambient relative humidity, and obtaining a third initial frequency of the compressor; operating the condensing fan at the first initial frequency, operating the spray water pump at the second initial frequency, and operating the compressor at the third initial frequency.

[0009] Optionally, the determining of the relationship between the ambient wet-bulb temperature and a preset ambient wet-bulb temperature, if the ambient wet-bulb temperature is not less than the preset ambient wet-bulb temperature, then controlling the frequency of the condensing fan by a target high-pressure pressure method, includes: obtaining the preset ambient wet-bulb temperature, and judging the relationship between the current ambient wet-bulb temperature and the preset ambient wet-bulb temperature; if the current ambient wet-bulb temperature is not less than the preset ambient wet-bulb temperature, then calculating the difference between the current high-pressure pressure and the target high-pressure pressure to obtain a condensing temperature target deviation; and adjusting the frequency of the condensing fan according to the condensing temperature target deviation.

[0010] Optionally, adjusting the frequency of the condensing fan according to the condensing temperature target deviation includes: determining a first target deviation preset interval of a target deviation interval threshold value corresponding to the condensing temperature of the condensing fan; if the condensing temperature target deviation is greater than a maximum value of the first target deviation preset interval of the target deviation interval threshold value, increasing the output frequency adjustment step of the condensing fan; if the condensing temperature target deviation is within the first target deviation preset interval of the target deviation interval threshold value, keeping the output frequency of the condensing fan unchanged; if the condensing temperature target deviation is less than a minimum value of the first target deviation preset interval of the target deviation interval threshold value, reducing the output frequency adjustment step of the condensing fan.

[0011] Optionally, if the ambient wet-bulb temperature is lower than a preset ambient wet-bulb temperature, the frequencies of the condensing fan and the spray water pump are controlled by a load method, including: if the ambient wet-bulb temperature is lower than a preset ambient wet-bulb temperature, calculating the difference between the fan load of the condensing fan and the compressor load of the compressor to obtain a fan target deviation; adjusting the frequency of the condensing fan based on the fan target deviation; and adjusting the frequency of the spray water pump based on the outlet air relative humidity.

[0012] Optionally, adjusting the frequency of the condensing fan based on the fan target deviation includes: determining a second target deviation preset interval of the fan target deviation preset interval corresponding to the condensing fan; if the fan target deviation is within the second target deviation preset interval of the fan target deviation preset interval, keeping the frequency of the condensing fan unchanged; if the fan target deviation is greater than the maximum value of the second target deviation preset interval of the fan target deviation preset interval, reducing the frequency of the condensing fan; if the fan target deviation is less than the minimum value of the second target deviation preset interval of the fan target deviation preset interval, increasing the frequency of the condensing fan.

[0013] Optionally, adjusting the frequency of the spray water pump based on the relative humidity of the outlet air includes: obtaining the relative humidity of the outlet air, wherein the relative humidity of the outlet air includes the total relative humidity of the outlet air and the preset relative humidity of the outlet air; calculating the target deviation of the spray water pump based on the difference between the total relative humidity of the outlet air and the preset relative humidity of the outlet air; determining a third target deviation preset interval of the spray water pump; if the target deviation of the spray water pump is within the third target deviation preset interval, keeping the frequency of the spray water pump unchanged; if the target deviation of the spray water pump is greater than the maximum value of the third target deviation preset interval, reducing the frequency of the spray water pump; if the target deviation of the spray water pump is less than the minimum value of the third target deviation preset interval, increasing the frequency of the spray water pump.

[0014] According to another aspect of the embodiment of the present application, the present application provides a fan and water pump control device for an air-conditioning unit, including: a starting module, used to start the compressor, condensing fan and spray water pump of the air-conditioning unit; an operation module, used to operate the condensing fan and the spray water pump according to the corresponding initial frequency according to the ambient wet-bulb temperature, and operate the compressor according to the corresponding initial frequency according to the ambient relative humidity; a first frequency control module, used to determine the relationship between the ambient wet-bulb temperature and the preset ambient wet-bulb temperature, if the ambient wet-bulb temperature is not less than the preset ambient wet-bulb temperature, the frequency of the condensing fan is controlled by a target high pressure method; a second frequency control module, used to control the frequency of the condensing fan and the spray water pump by a load method if the ambient wet-bulb temperature is less than the preset ambient wet-bulb temperature.

[0015] According to another aspect of an embodiment of the present application, the present application provides an electronic device, including a memory, a processor, a communication interface and a communication bus, wherein the memory stores a computer program that can be run on the processor, and the memory and the processor communicate through the communication bus and the communication interface, and is characterized in that the processor implements the instructions of the above-mentioned air-conditioning unit control method when executing the computer program.

[0016] According to another aspect of the embodiment of the present application, the present application also provides a readable storage medium storing program instructions, and when the program instructions are read and executed by a computing device, the computing device executes the above-mentioned air conditioning unit control method.

[0017] The above technical solution provided by the embodiment of the present application has the following advantages compared with the related art:

[0018] The present application directly controls the frequency of the condensing fan by the compressor operating load at a specific ambient wet-bulb temperature, and controls the frequency of the spray water pump by the relative humidity of the air outlet of the evaporative condenser, and the two are decoupled and controlled, so that the evaporative cooling chiller can achieve optimal energy efficiency under partial load conditions. The operating frequencies of the condensing fan, the spray water pump and the compressor are dynamically adjusted according to the real-time ambient wet-bulb temperature, so that the system can maintain the best working state under different humidity conditions, effectively respond to different seasons and weather changes, and improve the adaptability and stability of the system. The control logic combining the target high-pressure pressure method and the load method can intelligently select the most suitable control strategy according to the comparison result between the ambient wet-bulb temperature and the preset value. When the ambient humidity is high, the frequency of the condensing fan is accurately controlled by the target high-pressure pressure method to ensure the high pressure stability of the system; when the humidity is low, the frequency of the condensing fan and the spray water pump is optimized by the load method to further improve the energy efficiency. By setting the target deviation interval and the adjustment step, the fine adjustment of the frequency of the condensing fan and the spray water pump is achieved. This adjustment method not only improves the accuracy of the control, but also avoids the energy loss and mechanical wear caused by frequent start and stop, and prolongs the service life of the equipment. By comprehensively considering multiple factors such as system load, ambient humidity, and relative humidity of the air outlet, the frequency of the condensing fan and the spray water pump is intelligently adjusted, effectively reducing system energy consumption and improving energy utilization. At the same time, it also reduces unnecessary energy waste, which is in line with the development trend of green environmental protection. By starting each component with a preset timing, the stability and safety of the system startup process are ensured. In addition, real-time monitoring and adjustment of various parameters during the control process further enhance the stability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 A schematic diagram of a hardware environment of an air conditioning unit control method provided according to an embodiment of the present application;

[0022] Figure 2 A schematic diagram of a flow chart of an air conditioning unit control method provided according to an embodiment of the present application;

[0023] Figure 3 A detailed flow chart of an air conditioning unit control method provided according to an embodiment of the present application;

[0024] Figure 4 A schematic diagram of an evaporative cooling chiller system according to an embodiment of the present application;

[0025] Figure 5 A schematic diagram of a control structure of an air conditioning unit provided according to an embodiment of the present application;

[0026] Figure 6 The present invention is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present application and have no specific meaning. Therefore, "module" and "component" can be used interchangeably.

[0029] In the related art, when the existing evaporative cooling chiller is operated at partial load or low load, the condensing fan and the spray water pump cannot be adjusted adaptively, resulting in low energy efficiency.

[0030] In order to solve the problem mentioned in the background technology, according to one aspect of an embodiment of the present application, an embodiment of a method for controlling an air conditioning unit is provided.

[0031] Optionally, in the embodiment of the present application, the above method can be applied to Figure 1 In the hardware environment composed of the terminal 101 and the server 103 shown in FIG. Figure 1 As shown, the server 103 is connected to the terminal 101 via a network, and can be used to provide services for the terminal or a client installed on the terminal. A database 105 can be set on the server or independently of the server to provide data storage services for the server 103. The above-mentioned network includes but is not limited to: a wide area network, a metropolitan area network or a local area network, and the terminal 101 includes but is not limited to a PC, a mobile phone, a tablet computer, etc.

[0032] An air conditioning unit control method in the embodiment of the present application can be executed by the server 103, or can be executed by the server 103 and the terminal 101 together, such as Figure 2 and Figure 3As shown, the method may include the following steps:

[0033] S202, turning on the compressor, condensing fan and spray water pump of the air conditioning unit;

[0034] Further, S202 includes:

[0035] Analyze the preset timing to obtain the initial operating conditions corresponding to the compressor, the condensing fan and the spray water pump; wherein the initial operating condition of the compressor includes the first start signal, the initial operating condition of the condensing fan includes the compressor reaching the preset pressure, and the initial operating condition of the spray water pump includes the rotation speed of the condensing fan reaching the preset rotation speed;

[0036] starting the compressor according to a first start signal and monitoring the pressure of the compressor;

[0037] When the pressure of the compressor reaches a preset pressure value, the condensing fan is turned on by a second start signal, and the speed of the condensing fan is monitored;

[0038] When the rotation speed of the condensing fan reaches a preset rotation speed, the spray water pump is turned on by a third start signal to initialize the air conditioning unit.

[0039] It can be understood that this embodiment mainly controls the fan and water pump of the evaporative cooling air conditioning unit, such as Figure 4 The schematic diagram of the evaporative chiller system is shown. The specific working principle is as follows: the compression process is that the compressor 401 sucks in low-temperature and low-pressure refrigerant gas and compresses it into high-temperature and high-pressure gas. The condensation process is that the high-temperature and high-pressure refrigerant gas enters the horizontal tube evaporative condenser 409, and under the action of the condensing fan 403, the heat is dissipated into the surrounding environment, and the refrigerant gas is condensed into a high-pressure liquid. The throttling process is that the high-pressure liquid refrigerant passes through the electronic expansion valve 407, undergoes throttling and pressure reduction treatment, and becomes a low-pressure liquid refrigerant and enters the evaporator. The evaporation process is that in the shell and tube evaporator 406, the low-pressure liquid refrigerant evaporates into a gaseous state and absorbs a large amount of heat, thereby cooling the surrounding air or medium (such as water) and generating the cooling capacity required by the system. Heat exchange enhancement is that the spray water pump 408 sprays water onto the filler 405 of the cooling tower or related heat exchanger, and further improves the heat exchange efficiency by increasing the contact area between water and air. Oil return and recirculation is that the oil separator 402 ensures that the lubricating oil in the compressor exhaust is effectively recovered to prevent it from entering other parts of the system and causing adverse effects. The recovered lubricating oil is treated and then injected back into the compressor to achieve recycling. The air outlet temperature and humidity sensor 404 of the control system monitors the system status and feeds back the signal to the control system as needed to adjust the working status of the compressor, fan, electronic expansion valve and other components to keep the system in the best operating state.

[0040] In this embodiment, for example, according to the actual situation of the air-conditioning unit, the preset pressure of the compressor is set to 205MPa, and the preset speed of the condensing fan is set to 1500rpm. First, the control system of the air-conditioning unit sends a first start signal to the compressor. After receiving the first start signal, the compressor starts to work, sucks in the refrigerant and compresses it. At the same time, the control system monitors the pressure change of the refrigerant in real time. When the pressure of the refrigerant reaches the preset 2.5MPa, the control system immediately sends a second start signal to the condensing fan. After receiving the second start signal, the condensing fan starts to rotate, and the control system monitors the speed of the condensing fan in real time through the speed sensor. If the condensing fan fails to start in time or the speed is abnormal, the control system will issue an alarm and try to restart or shut down for protection. After the condensing fan is started, it continuously monitors whether its speed is stable and reaches the preset 1500rpm. When the speed reaches the preset value of 1500rpm, the control system sends a third start signal to the spray water pump, and the spray water pump starts to work, spraying cooling water to the condenser to help reduce the refrigerant temperature and improve the condensation efficiency. At the same time, the control system monitors the working state of the spray water pump to ensure its normal operation.

[0041] In the above embodiments, by accurately controlling the startup sequence and conditions of each component (such as refrigerant pressure and condensing fan speed), it is ensured that the system can start quickly in the best state, reducing energy waste and unnecessary waiting time during the startup process. By real-time monitoring of the working status of each component of the system (such as refrigerant pressure, condensing fan speed, etc.), and timely issuing alarms and taking protective measures (such as restarting or shutting down) when abnormalities occur, the system crash or damage caused by equipment failure is effectively prevented, and the overall stability and reliability of the system are improved. The timely startup and stable operation of the spray water pump can ensure that the cooling water is evenly sprayed on the heat exchanger, increasing the contact area between water and air, thereby improving the heat exchange efficiency. This not only helps to reduce the condensation temperature of the refrigerant and improve the condensation efficiency, but also helps to reduce energy consumption and extend the service life of the equipment.

[0042] S204, operating the condensing fan and the spray water pump at the corresponding initial frequency according to the ambient wet-bulb temperature, and operating the compressor at the corresponding initial frequency according to the ambient relative humidity;

[0043] Further, S204 includes:

[0044] Get the current ambient wet-bulb temperature and relative humidity;

[0045] Determine a first initial frequency of the fan corresponding to the current ambient wet-bulb temperature, determine a second initial frequency of the water pump corresponding to the current ambient relative humidity, and obtain a third initial frequency of the compressor;

[0046] The condensing fan is operated according to the first initial frequency, the spray water pump is operated according to the second initial frequency, and the compressor is operated according to the third initial frequency.

[0047] In this embodiment, the first initial frequency is represented by the variable frequency fan initial frequency. Table 1 shows the corresponding relationship between the ambient wet-bulb temperature and the variable frequency fan initial frequency. When the ambient wet-bulb temperature is greater than 30°C, the corresponding variable frequency fan initial frequency is X_fan1. When the ambient wet-bulb temperature is greater than 20°C and less than or equal to 30°C, the corresponding variable frequency fan initial frequency is X_fan2. When the ambient wet-bulb temperature is less than or equal to 20°C, the corresponding variable frequency fan initial frequency is X_fan3. In this embodiment, the value of the variable frequency fan initial frequency X_fan1 is set to 100 Hz, the value of the variable frequency fan initial frequency X_fan2 is set to 80 Hz, and the value of the variable frequency fan initial frequency X_fan3 is set to 60 Hz.

[0048] Table 1 Correspondence between ambient wet bulb temperature and initial frequency of variable frequency fan

[0049] Ambient wet bulb temperature Initial frequency of variable frequency fan Ambient wet bulb temperature>30℃ X_fan1 20°C < ambient wet-bulb temperature ≤ 30°C X_fan2 Ambient wet bulb temperature ≤20℃ X_fan3

[0050] Further, the second initial frequency is represented by the initial frequency of the variable frequency water pump, as shown in Table 2, which is the corresponding relationship between the relative humidity of the environment and the initial frequency of the variable frequency water pump. When the relative humidity of the environment is greater than 80%, the corresponding initial frequency of the variable frequency water pump is X_P1, when the relative humidity of the environment is greater than 60% and less than or equal to 80%, the corresponding initial frequency of the variable frequency water pump is X_P2, and when the relative humidity of the environment is less than or equal to 60%, the corresponding initial frequency of the variable frequency water pump is X_P3. In this embodiment, the initial frequency of the variable frequency water pump X_P1 ​​is set to 40 Hz, the initial frequency of the variable frequency water pump X_P2 is set to 60 Hz, and the initial frequency of the variable frequency water pump X_P3 is set to 80 Hz.

[0051] Table 2 Correspondence between ambient relative humidity and initial frequency of variable frequency water pump

[0052] Ambient relative humidity Initial frequency of variable frequency water pump Ambient relative humidity>80% X_P1 60% < Ambient relative humidity ≤ 80% X_P2 Ambient relative humidity ≤ 60% X_P3

[0053] In the above embodiments, the operating frequency of the equipment is dynamically adjusted according to environmental parameters to reduce unnecessary energy consumption. For example, when the relative humidity of the environment is low, increasing the frequency of the spray water pump can promote faster evaporative cooling, while when the relative humidity of the environment is high, the frequency may need to be reduced to avoid excessive spraying. Reasonable operating frequency setting helps to reduce the mechanical stress of the equipment and extend the life of the equipment. For example, avoiding the condensing fan and the spray water pump from running at too high or too low a frequency for a long time can reduce wear and failure. It can adapt to the operating requirements under different environmental conditions and improve the flexibility and adaptability of the system. Whether it is a high temperature and high humidity environment or a low temperature and low humidity environment, the operating frequency can be adjusted to maintain the optimal operating state of the system.

[0054] S206, determining the relationship between the ambient wet-bulb temperature and the preset ambient wet-bulb temperature, and if the ambient wet-bulb temperature is not less than the preset ambient wet-bulb temperature, controlling the frequency of the condensing fan by a target high pressure method;

[0055] Further, S206 includes:

[0056] Obtain the preset ambient wet-bulb temperature, and determine the relationship between the current ambient wet-bulb temperature and the preset ambient wet-bulb temperature;

[0057] If the current ambient wet-bulb temperature is not less than the preset ambient wet-bulb temperature, the difference between the current high-pressure pressure and the target high-pressure pressure is calculated to obtain the condensation temperature target deviation;

[0058] The frequency of the condensing fan is adjusted according to the condensing temperature target deviation.

[0059] In this embodiment, the current ambient wet bulb temperature T and the preset ambient wet bulb temperature t are first obtained, and the magnitude relationship between the current ambient wet bulb temperature T and the preset ambient wet bulb temperature t is determined. If the current ambient wet bulb temperature is greater than or equal to the preset ambient wet bulb temperature t, the frequency of the condensing fan is controlled by the target high pressure pressure method. Specifically, the target high pressure pressure method first calculates the difference between the current high pressure pressure and the target high pressure pressure as the condensing temperature target difference, and then adjusts the frequency of the condensing fan according to the calculated condensing temperature target difference. Condensing temperature target deviation = high pressure pressure - target high pressure pressure Po. The value range of the target high pressure pressure Po in this embodiment is set to 800-1000 kPa.

[0060] In the above embodiment, by comparing the current ambient wet-bulb temperature with the preset value, the ambient temperature state can be accurately determined. When the ambient temperature is high, the target deviation of the condensing temperature is obtained by calculating the difference between the current high-pressure pressure and the target high-pressure pressure, and the frequency of the condensing fan is adjusted accordingly, which helps to keep the condensing system running within the efficient working range, reduce energy consumption, and improve overall efficiency. By timely increasing the frequency of the condensing fan in a high-temperature environment, the heat exchange speed of the condenser can be accelerated, the condensing temperature can be reduced, and the refrigeration efficiency can be improved. On the contrary, in a low-temperature environment, the frequency is appropriately reduced to reduce energy consumption. This intelligent adjustment mechanism can not only effectively reduce operating costs, but also conform to the current environmental protection trend of energy conservation and emission reduction. By accurately controlling the operating frequency of the condensing fan, it can be ensured that the condensing system can operate stably under different environmental conditions, which helps to reduce system fluctuations and failure rates caused by changes in ambient temperature, and improve the overall stability and reliability of the system.

[0061] Specifically, adjusting the frequency of the condensing fan according to the condensing temperature target deviation includes:

[0062] Determine a first target deviation preset interval corresponding to the condensing temperature of the condensing fan;

[0063] If the condensing temperature target deviation is greater than the maximum value of the first target deviation preset interval, increasing the output frequency adjustment step of the condensing fan;

[0064] If the condensing temperature target deviation is within the first target deviation preset interval, the condensing fan output frequency is kept unchanged;

[0065] If the condensing temperature target deviation is less than the minimum value of the first target deviation preset interval, the output frequency adjustment step of the condensing fan is reduced.

[0066] In this embodiment, for example, the preset interval of the first target deviation corresponding to the condensing temperature of the condensing fan is set to be between -50 and 50. When the condensing temperature target deviation is greater than 50, it means that the current condensing temperature is far below the target value, and the cooling capacity of the condensing fan needs to be increased. Therefore, the control system increases the output frequency adjustment step of the condensing fan until the set maximum frequency is reached or the condensing temperature returns to a reasonable range. When the condensing temperature target deviation is between -50 and 50, it means that the condensing temperature is close to the target value and the current fan frequency is moderate. The control system keeps the output frequency of the condensing fan unchanged and continuously monitors the changes in the condensing temperature. When the condensing temperature target deviation is less than or equal to -50: it means that the current condensing temperature is too high and the load of the condensing fan needs to be reduced. Therefore, the control system reduces the output frequency adjustment step of the condensing fan until the set minimum frequency is reached or the condensing temperature drops to a reasonable range.

[0067] In the above embodiment, by setting the first target deviation preset interval corresponding to the condensing temperature, and adjusting the output frequency of the condensing fan according to the comparison result between the actual deviation and the threshold value, it is possible to ensure that the condensing system can operate in the optimal state under different working conditions, thereby improving energy efficiency and reducing unnecessary energy consumption. When the condensing temperature target deviation is large, the output frequency adjustment step of the condensing fan is increased to quickly respond and reduce the condensing temperature; when the deviation is small, the adjustment step is reduced to avoid instability caused by over-adjustment, so as to better adapt to changes in ambient temperature and load and maintain a stable operating state. Keeping the output frequency of the condensing fan unchanged within the first target deviation preset interval helps to reduce frequent adjustments and fluctuations in the system, thereby reducing equipment wear and failure rate, and improving the stability and reliability of the overall system.

[0068] S208: If the ambient wet-bulb temperature is lower than the preset ambient wet-bulb temperature, the frequency of the condensing fan and the frequency of the spray water pump are controlled by a load method.

[0069] Further, S208 includes:

[0070] If the ambient wet bulb temperature is less than the preset ambient wet bulb temperature, the difference between the fan load of the condensing fan and the compressor load of the compressor is calculated to obtain a fan target deviation;

[0071] Adjust the frequency of the condensing fan based on the fan target deviation;

[0072] Adjust the frequency of the sprinkler pump based on the relative humidity of the outgoing air.

[0073] In this embodiment, the difference between the current fan load of the condensing fan and the high pressure pressure of the compressor is first calculated to obtain the fan target deviation. The current fan load of the condensing fan includes parameters such as the fan current and power, and the high pressure pressure of the compressor includes the compressor load. Among them, the compressor load = operating frequency / rated frequency, and the fan load = fan operating frequency / fan rated frequency. Based on the calculated fan target deviation, the frequency of the condensing fan is adjusted, the relative humidity of the outlet air is obtained, and the frequency of the spray pipe test pump is adjusted according to the relative humidity of the outlet air.

[0074] In the above embodiment, when the ambient wet-bulb temperature is lower than the preset value, the fan target deviation is obtained by calculating the difference between the fan load of the condensing fan and the compressor load of the compressor, and the frequency of the condensing fan is adjusted accordingly, so as to ensure that the condensing fan can operate at the optimal frequency under different load conditions, thereby improving the overall operating efficiency of the unit. By adjusting the frequency of the spray water pump based on the relative humidity of the outlet air, the amount of spray water can be accurately controlled. When the humidity is low, the amount of spray water is reduced to avoid unnecessary energy consumption; when the humidity is high, the amount of spray water is increased to improve the cooling effect, which helps to save energy and reduce consumption, and reduce operating costs. By adjusting the frequency of the condensing fan and the spray water pump, the temperature and humidity of the indoor environment can be kept within a comfortable range. In particular, when the ambient wet-bulb temperature is low, by reducing the load of the condensing fan and the spray water pump, the indoor temperature can be avoided from being too low or the humidity is too high, thereby improving the user's comfort. By dynamically adjusting the frequency of the condensing fan and the spray water pump, the system can adapt to the load changes under different environmental conditions, which helps to reduce the fluctuation and failure rate of the system and enhance the stability and reliability of the system.

[0075] Specifically, adjusting the frequency of the condensing fan based on the fan target deviation includes:

[0076] Determine a fan target deviation preset interval and a second target deviation preset interval corresponding to the condensing fan;

[0077] If the fan target deviation is within the fan target deviation preset interval and the second target deviation preset interval, the frequency of the condensing fan is kept unchanged;

[0078] If the fan target deviation is greater than the maximum value of the second target deviation preset interval of the fan target deviation preset interval, reducing the frequency of the condensing fan;

[0079] If the fan target deviation is less than the minimum value of the second target deviation preset interval of the fan target deviation preset interval, the frequency of the condensing fan is increased.

[0080] In this embodiment, the second target deviation preset interval corresponding to the condensing fan is first determined, for example, the second target deviation preset interval is between X2 and X1, and it is determined whether the fan target deviation is between the second target deviation preset interval X2 and X1, that is, X2≤fan target deviation≤X1. If so, it means that the condensing fan load and the compressor load are within a reasonable range, and the heat dissipation of the air-conditioning unit is currently consistent with the condensing fan load, which can ensure high operating energy efficiency under low temperature load of the air-conditioning unit. If the fan target deviation>X1, it means that the frequency of the condensing fan is too large (F0 is the current operating load), and the frequency D1 of the condensing fan is reduced accordingly. The adjusted total frequency is F=F0-D1+f1 (F0 is the current operating load, and f1 is the correction system). The correction system f1 is used to adjust the additional parameters of the condensing fan frequency, which can improve the accuracy and adaptability of the control system to the adjustment of the condensing fan frequency. If the fan target deviation is less than X2, it means that the frequency of the condensing fan is too small, and the frequency D1 of the condensing fan is increased accordingly. The adjusted total frequency is F=F0+D1+f1, so as to ensure that the air-conditioning unit operates under the optimal working condition. The value range of the frequency D1 of the condensing fan in this embodiment is 2~4hz. Due to various factors inside or outside the system (such as temperature fluctuations, humidity changes, equipment aging, etc.), the actual operation effect of the condensing fan may deviate from the theoretical model. These deviations are compensated by correcting the system f1 to ensure that the frequency adjustment of the condensing fan can reach the target value more accurately. With the changes in the operating state of the air-conditioning unit, such as changes in the compressor load and changes in the ambient temperature, the optimal operating frequency of the condensing fan may also change. The correction system f1 can be dynamically adjusted according to the real-time state of the system to ensure that the condensing fan always operates at the optimal frequency.

[0081] In the above embodiment, by calculating the fan target deviation in real time and comparing it with the second target deviation preset interval, it can be accurately determined whether the condensing fan needs to adjust the frequency. When the fan target deviation is within the preset interval, the frequency of the condensing fan is kept unchanged to avoid unnecessary adjustment; when the deviation exceeds the preset interval, the frequency of the condensing fan is adjusted according to the size and direction of the deviation to ensure that the unit always operates in the optimal state, thereby improving the overall operating efficiency. By accurately adjusting the frequency of the condensing fan, accurate matching of the unit load can be achieved. When the load is low, reducing the frequency of the condensing fan can reduce energy consumption; when the load is high, increasing the frequency of the condensing fan can ensure that the unit has sufficient cooling capacity. This adjustment method helps to save energy and reduce consumption, and reduce operating costs. Setting the second target deviation preset interval and keeping the frequency of the condensing fan unchanged when the deviation is within the interval helps to reduce frequent adjustments and fluctuations in the system, can reduce equipment wear and failure rate, and improve the overall stability and reliability of the system. The frequency of the condensing fan can be automatically adjusted according to different load conditions and operating environments, which enhances the adaptability and flexibility of the unit. Whether facing seasonal temperature changes or sudden load fluctuations, the unit can respond quickly and adjust to the optimal operating state.

[0082] Specifically, the frequency of the sprinkler pump is adjusted based on the relative humidity of the outlet air, including:

[0083] Get the relative humidity of the outlet air, which includes the total relative humidity of the outlet air and the preset relative humidity of the outlet air;

[0084] Calculate the target deviation of the sprinkler pump based on the difference between the total air outlet relative humidity and the preset air outlet relative humidity;

[0085] Determining a third target deviation preset interval of the sprinkler water pump;

[0086] If the target deviation of the sprinkler water pump is within the third target deviation preset interval, the frequency of the sprinkler water pump is kept unchanged;

[0087] If the spray water pump target deviation is greater than the maximum value of the third target deviation preset interval, the spray water pump frequency is reduced;

[0088] If the target deviation of the spray water pump is less than the minimum value of the third target deviation preset interval, the frequency of the spray water pump is increased.

[0089] In this embodiment, the total relative humidity RH_t of the fan outlet is first monitored in real time by a humidity sensor. The target deviation RH of the spray pump is calculated according to the total relative humidity RH_t of the outlet and the preset relative humidity of the outlet, and two thresholds RH1 and RH2 are preset to form a third target deviation preset interval [RH1, RH2]. If RH is within the interval [RH1, RH2], it means that the current spray heat exchange effect is in the best state, and there is no need to adjust the frequency of the spray pump, and the current frequency P0 is kept unchanged. If RH is greater than RH2, it means that the relative humidity of the outlet air is too high, and there may be excess water vapor being brought out. At this time, the frequency of the spray pump needs to be reduced to save water resources and electricity. The adjusted frequency P_new = P0-D2+p1 (p1 is a correction system), and the correction system p1 is used to adjust the additional parameters of the spray pump frequency, which can improve the accuracy and adaptability of the control system to the adjustment of the spray pump frequency. If RH is less than RH1, it means that the humidity of the outlet air is too low, and there may be more dry air that is not fully utilized. At this time, the frequency of the spray pump needs to be increased to improve the heat exchange efficiency. The adjusted frequency P_new=P0+D2+p1. The value range of the frequency adjustment step D2 in this embodiment is 2~4hz. Finally, the control system sends a frequency adjustment instruction to the spray water pump based on the judgment result, so that it runs at the new frequency P_new. In the actual operation process, due to factors such as system aging, wear and tear, and environmental changes (such as temperature and humidity), there may be deviations between the system performance and the theoretical model. These deviations can be compensated by correcting the system p1 to ensure that the frequency adjustment of the spray water pump is more accurate. In specific cases, the correction system p1 is dynamically adjusted according to the real-time operating status of the system (such as refrigerant pressure, condensing fan speed, ambient temperature, etc.). It can respond to various changes more flexibly to ensure that the frequency of the spray water pump always remains within the optimal range.

[0090] In the above embodiment, the target deviation of the spray water pump is determined by obtaining the total relative humidity of the outlet air and the preset relative humidity of the outlet air in real time and calculating the difference between the two. This adjustment method based on actual operating parameters can ensure that the spray water pump can operate at the optimal frequency under different humidity conditions, thereby improving the overall operating efficiency of the unit. When the relative humidity of the outlet air is close to the preset value, the frequency of the spray water pump is kept unchanged to avoid unnecessary energy consumption; when the relative humidity of the outlet air deviates from the preset value by a large margin, the frequency of the spray water pump is adjusted according to the size and direction of the deviation to quickly restore to the preset humidity range, which helps to save energy and reduce consumption and reduce operating costs. By adjusting the frequency of the spray water pump, the amount of spray water can be controlled, thereby affecting the humidity of the indoor environment. When the humidity is too high, the amount of spray water is increased to reduce the humidity; when the humidity is too low, the amount of spray water is reduced to maintain a suitable humidity, which helps to improve the comfort of the indoor environment and meet the actual needs of users. Setting the third target deviation preset interval of the sprinkler water pump and keeping the frequency of the sprinkler water pump unchanged when the deviation is within this interval will help reduce frequent adjustments and fluctuations in the system, reduce equipment wear and failure rate, and improve the overall stability and reliability of the system.

[0091] According to another aspect of the embodiment of the present application, Figure 5 As shown, the present application provides a fan water pump control device for an air conditioning unit, comprising:

[0092] The start module 501 is used to start the compressor, condensing fan and spray water pump of the air conditioning unit;

[0093] An operation module 503 is used to operate the condensing fan and the spray water pump at a corresponding initial frequency according to the ambient wet-bulb temperature, and to operate the compressor at a corresponding initial frequency according to the ambient relative humidity;

[0094] The first frequency control module 505 is used to determine the relationship between the ambient wet-bulb temperature and the preset ambient wet-bulb temperature, and if the ambient wet-bulb temperature is not less than the preset ambient wet-bulb temperature, the frequency of the condensing fan is controlled by a target high pressure method;

[0095] The second frequency control module 507 is used to control the frequencies of the condensing fan and the spray water pump by a load method if the ambient wet-bulb temperature is lower than a preset ambient wet-bulb temperature.

[0096] It should be noted that the startup module 501 in this embodiment can be used to execute step S202 in the embodiment of the present application, the operation module 503 in this embodiment can be used to execute step S204 in the embodiment of the present application, the first frequency control module 505 in this embodiment can be used to execute step S206 in the embodiment of the present application, and the second frequency control module 507 in this embodiment can be used to execute step S208 in the embodiment of the present application.

[0097] It should be noted that the examples and application scenarios implemented by the above modules and corresponding steps are the same, but are not limited to the contents disclosed in the above embodiments. It should be noted that the above modules as part of the device can be run in Figure 1 In the hardware environment shown, it can be implemented by software or by hardware.

[0098] According to another aspect of the embodiments of the present application, the present application provides an electronic device, such as Figure 6 As shown, it includes a memory 601, a processor 603, a communication interface 605 and a communication bus 607. The memory 601 stores a computer program that can be run on the processor 603. The memory 601 and the processor 603 communicate through the communication interface 605 and the communication bus 607. When the processor 603 executes the computer program, the steps of the above method are implemented.

[0099] The memory and processor in the above electronic device communicate through the communication bus and the communication interface. The communication bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The communication bus can be divided into an address bus, a data bus, a control bus, etc.

[0100] The memory may include a random access memory (RAM) or a non-volatile memory, such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0101] The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0102] According to another aspect of the embodiments of the present application, a computer program product or a computer program is provided, the computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the steps of any of the above embodiments.

[0103] Optionally, in an embodiment of the present application, the computer-readable medium is configured to store program codes for the processor to execute the following steps:

[0104] Step S202, turning on the compressor, condensing fan and spray water pump of the air conditioning unit;

[0105] Step S204, operating the condensing fan and the spray water pump at the corresponding initial frequency according to the ambient wet-bulb temperature, and operating the compressor at the corresponding initial frequency according to the ambient relative humidity;

[0106] Step S206, determining the relationship between the ambient wet-bulb temperature and the preset ambient wet-bulb temperature, and if the ambient wet-bulb temperature is not less than the preset ambient wet-bulb temperature, controlling the frequency of the condensing fan by the target high pressure method;

[0107] Step S208: If the ambient wet-bulb temperature is lower than the preset ambient wet-bulb temperature, the frequencies of the condensing fan and the spray water pump are controlled by a load method.

[0108] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0109] When the embodiments of the present application are specifically implemented, reference may be made to the above-mentioned embodiments, which have corresponding technical effects.

[0110] It is understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions of the present application, or a combination thereof.

[0111] For software implementation, the technology of this article can be implemented by a unit that performs the functions of this article. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0112] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0113] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0114] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0115] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0116] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0117] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk or an optical disk. It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such a process, method, article or device. Without more constraints, an element defined by the phrase "comprising a ..." does not exclude the existence of other identical elements in the process, method, article or apparatus comprising the element.

[0118] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A method for controlling an air conditioning unit, characterized in that: include: Compressors, condensing fans and spray water pumps of air-conditioning units; Operate the condensing fan and the spray water pump at the corresponding initial frequency according to the ambient wet-bulb temperature, and operate the compressor at the corresponding initial frequency according to the ambient relative humidity; Determine the relationship between the ambient wet-bulb temperature and the preset ambient wet-bulb temperature, and if the ambient wet-bulb temperature is not less than the preset ambient wet-bulb temperature, control the frequency of the condensing fan by a target high pressure method; If the ambient wet-bulb temperature is lower than the preset ambient wet-bulb temperature, the frequency of the condensing fan and the frequency of the spray water pump are controlled by a load method.

2. The air conditioning unit control method according to claim 1, characterized in that: The method of starting the compressor, condensing fan and spray water pump of the air conditioning unit includes: Analyze the preset timing to obtain the initial operating conditions corresponding to the compressor, the condensing fan and the spray water pump; wherein the initial operating condition of the compressor includes a first start signal, the initial operating condition of the condensing fan includes that the compressor reaches a preset pressure, and the initial operating condition of the spray water pump includes that the speed of the condensing fan reaches a preset speed; starting the compressor according to a first start signal and monitoring the pressure of the compressor; When the pressure of the compressor reaches a preset pressure value, the condensing fan is turned on by a second start signal, and the speed of the condensing fan is monitored; When the rotation speed of the condensing fan reaches a preset rotation speed, the spray water pump is turned on by a third starting signal to initialize the air conditioning unit.

3. The air conditioning unit control method according to claim 1, characterized in that: The step of operating the condensing fan and the spray water pump at a corresponding initial frequency according to the ambient wet-bulb temperature, and operating the compressor at a corresponding initial frequency according to the ambient relative humidity, comprises: Get the current ambient wet-bulb temperature and relative humidity; Determine a first initial frequency of the fan corresponding to the current ambient wet-bulb temperature, determine a second initial frequency of the water pump corresponding to the current ambient relative humidity, and obtain a third initial frequency of the compressor; The condensing fan is operated according to the first initial frequency, the spray water pump is operated according to the second initial frequency, and the compressor is operated according to the third initial frequency.

4. The air conditioning unit control method according to claim 1, characterized in that: The determining of the relationship between the ambient wet-bulb temperature and the preset ambient wet-bulb temperature, and if the ambient wet-bulb temperature is not less than the preset ambient wet-bulb temperature, controlling the frequency of the condensing fan by a target high pressure method, comprises: Obtaining a preset ambient wet-bulb temperature, and determining a magnitude relationship between the current ambient wet-bulb temperature and the preset ambient wet-bulb temperature; If the current ambient wet-bulb temperature is not less than the preset ambient wet-bulb temperature, the difference between the current high-pressure pressure and the target high-pressure pressure is calculated to obtain a condensing temperature target deviation; The frequency of the condensing fan is adjusted according to the condensing temperature target deviation.

5. The air conditioning unit control method according to claim 4, characterized in that: The adjusting the frequency of the condensing fan according to the condensing temperature target deviation comprises: Determine a first target deviation preset interval corresponding to the condensing temperature of the condensing fan; If the condensing temperature target deviation is greater than the maximum value of the first target deviation preset interval, increasing the output frequency adjustment step of the condensing fan; If the condensing temperature target deviation is within the first target deviation preset interval, the condensing fan output frequency is kept unchanged; If the condensing temperature target deviation is less than the minimum value of the first target deviation preset interval, the output frequency adjustment step of the condensing fan is reduced.

6. The air conditioning unit control method according to claim 1, characterized in that: If the ambient wet-bulb temperature is less than a preset ambient wet-bulb temperature, the frequency of the condensing fan and the frequency of the spray water pump are controlled by a load method, including: If the ambient wet-bulb temperature is less than a preset ambient wet-bulb temperature, the difference between the fan load of the condensing fan and the compressor load of the compressor is calculated to obtain a fan target deviation; adjusting the frequency of the condensing fan based on the fan target deviation; The frequency of the spray water pump is adjusted based on the relative humidity of the outlet air.

7. The vehicle diagnosis management method according to claim 6, characterized in that: The adjusting the frequency of the condensing fan based on the fan target deviation comprises: Determine a second target deviation preset interval corresponding to the condensing fan; If the fan target deviation is within the second target deviation preset interval, the frequency of the condensing fan is kept unchanged; If the fan target deviation is greater than the maximum value of the second target deviation preset interval, reducing the frequency of the condensing fan; If the fan target deviation is less than the minimum value of the second target deviation preset interval, the frequency of the condensing fan is increased.

8. The air conditioning unit control method according to claim 6, characterized in that: The method of adjusting the frequency of the spray water pump based on the relative humidity of the outlet air comprises: Obtaining the relative humidity of the air outlet, wherein the relative humidity of the air outlet includes the total relative humidity of the air outlet and the preset relative humidity of the air outlet; Calculating a target deviation of a sprinkler water pump based on a difference between the total air outlet relative humidity and the preset air outlet relative humidity; Determining a third target deviation preset interval of the sprinkler water pump; If the spray water pump target deviation is within the third target deviation preset interval, the frequency of the spray water pump is kept unchanged; If the spray water pump target deviation is greater than the maximum value of the third target deviation preset interval, reducing the frequency of the spray water pump; If the spray water pump target deviation is less than the minimum value of the third target deviation preset interval, the frequency of the spray water pump is increased.

9. A fan and water pump control device for an air conditioning unit, applicable to the air conditioning unit control method according to any one of claims 1 to 8, characterized in that: include: Startup module, used to start the compressor, condensing fan and spray water pump of the air-conditioning unit; An operation module, used to operate the condensing fan and the spray water pump at a corresponding initial frequency according to the ambient wet-bulb temperature, and to operate the compressor at a corresponding initial frequency according to the ambient relative humidity; A first frequency control module, used for determining the relationship between the ambient wet-bulb temperature and a preset ambient wet-bulb temperature, and if the ambient wet-bulb temperature is not less than the preset ambient wet-bulb temperature, controlling the frequency of the condensing fan by a target high pressure method; The second frequency control module is used to control the frequencies of the condensing fan and the spray water pump by a load method if the ambient wet-bulb temperature is lower than a preset ambient wet-bulb temperature.

10. An electronic device comprising a memory, a processor, a communication interface and a communication bus, wherein the memory stores a computer program that can be run on the processor, and the memory and the processor communicate through the communication bus and the communication interface, characterized in that: When the processor executes the computer program, the instructions of the air conditioning unit control method described in any one of claims 1 to 8 are implemented.

11. A readable storage medium storing program instructions, when the program instructions are read and executed by a computing device, the computing device executes the air conditioning unit control method according to any one of claims 1 to 8.

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