Humidity control method and device of air conditioner and air conditioner

Abstract

The invention relates to the technical field of air conditioners, and provides a humidity control method and device of an air conditioner and the air conditioner. The humidity control method of the air conditioner comprises the steps that the target air dew point temperature is obtained; according to the target air dew point temperature, the target coil pipe temperature of the evaporator is determined; and the rotating speed of an indoor fan and the operation frequency of a compressor are controlled, so that the current evaporator coil temperature reaches the target evaporator coil temperature. Under the condition that no humidity sensor exists and the cost is not increased, the effect of accurately adjusting and controlling temperature and humidity is achieved, and the use requirement of a user is met.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a humidity control method and device for an air conditioner, and the air conditioner. Background Art

[0002] At present, the dehumidification function of ordinary air conditioners cannot control relative humidity. In order to control relative humidity during dehumidification, high-end air conditioners have added humidity sensors. By real-time monitoring of indoor relative humidity, the air conditioner operating parameters are adjusted to achieve the purpose of dehumidification control, but this increases the design cost. Summary of the Invention

[0003] The present invention provides a humidity control method and device for an air conditioner, and an air conditioner, to address the defect in the related art that the design cost of an air conditioner is increased when dehumidification control is performed by adding a humidity sensor. The present invention uses control logic to achieve the effect of precise temperature and humidity control without a humidity sensor and without increasing the cost, thereby meeting the user's needs.

[0004] The present invention provides a humidity control method for an air conditioner, comprising:

[0005] Get the target air dew point temperature;

[0006] determining a target evaporator coil temperature according to the target air dew point temperature;

[0007] The speed of the indoor fan and the operating frequency of the compressor are controlled so that the current evaporator coil temperature reaches the target evaporator coil temperature.

[0008] According to the present invention, a humidity control method for an air conditioner is provided, which controls the speed of an indoor fan and the operating frequency of a compressor so that the current evaporator coil temperature reaches the target evaporator coil temperature, including:

[0009] According to the temperature difference between the current indoor ambient temperature and the target ambient temperature, the speed of the indoor fan is controlled, and the operating frequency of the compressor is controlled based on the initial set frequency using the PID adjustment method to make the current evaporator coil temperature reach the evaporator target coil temperature.

[0010] According to the present invention, a humidity control method for an air conditioner is provided, which controls the rotation speed of an indoor fan according to the temperature difference between the current indoor ambient temperature and the target ambient temperature, comprising:

[0011] Determining that the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to the second set temperature and less than the first set temperature, controlling the indoor fan to operate at the first wind speed gear;

[0012] Determining that the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to the third set temperature and less than the second set temperature, controlling the indoor fan to operate at the second wind speed gear;

[0013] Determining that the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to the fourth set temperature and less than the third set temperature, controlling the indoor fan to operate at the third wind speed gear;

[0014] The wind speed at the first wind speed gear is greater than the wind speed at the second wind speed gear, and the wind speed at the second wind speed gear is greater than the wind speed at the third wind speed gear.

[0015] According to the present invention, a humidity control method for an air conditioner is provided, which controls the rotation speed of an indoor fan according to the temperature difference between the current indoor ambient temperature and the target ambient temperature, and further includes:

[0016] Determine that the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to the first set temperature, and control the indoor fan to operate at the fourth wind speed gear;

[0017] Determining that the temperature difference between the current indoor ambient temperature and the target ambient temperature is less than a fourth set temperature, controlling the indoor fan to operate at a fifth wind speed gear;

[0018] Among them, the wind speed of the fourth wind speed gear is greater than the wind speed of the first wind speed gear, and the wind speed of the fifth wind speed gear is less than the wind speed of the third wind speed gear.

[0019] According to a humidity control method for an air conditioner provided by the present invention, determining a target evaporator coil temperature according to the target air dew point temperature includes:

[0020] T 目标 =T 蒸 +ΔT;

[0021] T 蒸 =T d ;

[0022] Among them, T 目标 is the target evaporator coil temperature, T 蒸 is the surface temperature of the evaporator coil, ΔT is the detection error value, T d is the target air dew point temperature.

[0023] According to a humidity control method for an air conditioner provided by the present invention, obtaining a target air dew point temperature includes:

[0024] Get the current indoor ambient temperature, target relative humidity, and wet enthalpy diagram;

[0025] Determine the corresponding target air dew point temperature based on the current indoor ambient temperature, target relative humidity, and enthalpy diagram.

[0026] According to a humidity control method for an air conditioner provided by the present invention, obtaining a target air dew point temperature includes:

[0027] Obtain target ambient temperature, target relative humidity and wet enthalpy diagram;

[0028] Determine the corresponding target air dew point temperature based on the target ambient temperature, target relative humidity, and the wet enthalpy diagram.

[0029] According to the present invention, a humidity control method for an air conditioner includes:

[0030] Re-obtain the target air dew point temperature every preset period;

[0031] determining a target evaporator coil temperature according to the target air dew point temperature;

[0032] The speed of the indoor fan and the operating frequency of the compressor are controlled so that the current evaporator coil temperature reaches the target evaporator coil temperature.

[0033] The present invention also provides a humidity control device for an air conditioner, comprising:

[0034] An acquisition module, used to obtain a target air dew point temperature;

[0035] a determination module, configured to determine a target evaporator coil temperature according to the target air dew point temperature;

[0036] The control module is used to control the speed of the indoor fan and the operating frequency of the compressor so that the current evaporator coil temperature reaches the evaporator target coil temperature.

[0037] The present invention also provides an air conditioner, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned humidity control method for the air conditioner when executing the program.

[0038] The humidity control method, device and air conditioner provided by the present invention can adjust the absolute humidity of the outlet air by adjusting the dew point temperature of the outlet air in the absence of the relative humidity parameter of the inlet air (i.e., without a humidity sensor), thereby realizing the precise control of the indoor temperature and humidity by the air conditioner, which not only improves the user experience but also reduces the cost investment of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1This is one of the flow charts of the humidity control method for an air conditioner provided by the present invention;

[0041] Figure 2 This is a schematic diagram of the gear positions of the indoor fan speed provided by the present invention;

[0042] Figure 3 This is the second flow chart of the humidity control method for the air conditioner provided by the present invention;

[0043] Figure 4 This is the third flow chart of the humidity control method for the air conditioner provided by the present invention;

[0044] Figure 5 1 is a schematic structural diagram of the humidity control device for an air conditioner provided by the present invention;

[0045] Figure 6 It is a structural schematic diagram of the air conditioner provided by the present invention.

[0046] Reference numerals:

[0047] 501: Acquisition module; 502: Determination module; 503: Control module;

[0048] 601: processor; 602: communication interface;

[0049] 603: memory; 604: communication bus. DETAILED DESCRIPTION

[0050] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0051] In the description of the embodiments of the present invention, it should be noted that the terms “first”, “second”, etc. are only used for descriptive purposes and should not be understood as indicating or implying relative importance.

[0052] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0053] The following combination Figures 1-6 The present invention describes a humidity control method and device for an air conditioner and an air conditioner.

[0054] According to an embodiment of the first aspect of the present invention, referring to Figure 1 As shown, the humidity control method of the air conditioner provided by the present invention mainly includes the following steps:

[0055] S101. Obtain target air dew point temperature.

[0056] Dew point temperature is a key parameter for measuring the moisture content in the air, which determines the maximum amount of water vapor that the air can hold.

[0057] S102: Determine the target evaporator coil temperature according to the target air dew point temperature.

[0058] The air conditioner's evaporator coil temperature directly affects its cooling efficiency, and thus its ability to dehumidify air as it passes through the evaporator. When the evaporator coil temperature falls below the air's current dew point, moisture in the air condenses and precipitates. Therefore, this step sets the evaporator's target operating temperature based on the target dew point to ensure the evaporator can effectively reduce indoor air humidity to the desired level to meet user needs.

[0059] S103 : Control the speed of the indoor fan and the operating frequency of the compressor so that the current evaporator coil temperature reaches the target evaporator coil temperature.

[0060] This stage achieves dynamic control. First, by varying the speed of the indoor fan, the speed and contact time of air flowing through the evaporator are adjusted, thereby affecting dehumidification efficiency. Second, the compressor's operating frequency is adjusted to ensure that the refrigerant circulation rate and evaporator cooling output meet requirements. Ultimately, the actual evaporator coil temperature is aligned with the target coil temperature, achieving precise control of indoor humidity.

[0061] Therefore, the humidity control method for the air conditioner provided in the embodiment of the present invention fully utilizes the functions of existing air-conditioning equipment. By obtaining the target dew point temperature and precisely controlling key components (such as the evaporator coil, indoor fan and compressor), it can effectively achieve flexible and precise management of indoor temperature and humidity without increasing the cost of the humidity sensor.

[0062] According to one embodiment of the present invention, controlling the speed of the indoor fan and the operating frequency of the compressor so that the current evaporator coil temperature reaches the target evaporator coil temperature includes:

[0063] According to the temperature difference between the current indoor ambient temperature and the target ambient temperature, the speed of the indoor fan is controlled, and the operating frequency of the compressor is controlled based on the initial set frequency using the PID adjustment method to make the current evaporator coil temperature reach the evaporator target coil temperature.

[0064] In this embodiment of the present invention, the specific operations of controlling the indoor fan speed and the compressor operating frequency are as follows:

[0065] 1. Adjust the indoor fan speed based on the temperature difference between the current indoor ambient temperature and the target ambient temperature: The system first monitors the actual indoor temperature in real time and compares it with the preset target ambient temperature. If there is a temperature difference between the two, the indoor fan speed is adjusted to change the speed at which air flows through the evaporator and the time it remains in contact with the evaporator, thereby affecting dehumidification efficiency and cooling performance. For example, if the current indoor temperature is significantly higher than the target temperature, the fan speed is increased to accelerate air circulation and improve cooling and dehumidification efficiency. Conversely, if the temperature is significantly higher than the target temperature, the fan speed is reduced to slow the air processing rate.

[0066] 2. Use PID regulation to control the compressor operating frequency: PID (proportional-integral-differential) control is a closed-loop feedback control method widely used in the field of industrial automation. It can dynamically adjust according to the error between the set value and the actual measured value. In the present invention, the PID algorithm is used to accurately control the operating frequency of the compressor based on the initial set frequency. By continuously calculating the deviation between the current evaporator coil temperature and the target coil temperature and adjusting the compressor operating state accordingly, it is ensured that the evaporator can stably maintain the target coil temperature, thereby achieving effective control of indoor humidity.

[0067] 3. Frequency Adjustment Based on Initial Setpoint: When the PID control process is initiated, an initial set frequency, such as the highest frequency, is typically set as the starting point. As the PID algorithm continues to operate, the compressor's operating frequency is adjusted in real time based on actual demand. This not only avoids energy waste caused by frequent and large fluctuations, but also ensures the air conditioning system's rapid response and precise control of indoor environmental conditions, ultimately ensuring that the evaporator coil temperature reaches the pre-set target coil temperature, effectively maintaining indoor humidity within the ideal range.

[0068] Through the above steps, the present invention realizes the precise regulation of the internal components of the air-conditioning system by relying on temperature parameters in the absence of a humidity sensor to achieve a predetermined dew point temperature, thereby enabling the air conditioner to flexibly and efficiently complete the dehumidification task in different environments while ensuring the user's demand for indoor comfort.

[0069] According to one embodiment of the present invention, referring to Figure 2 As shown, the speed of the indoor fan is controlled according to the temperature difference between the current indoor ambient temperature and the target ambient temperature, including:

[0070] Determining that the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to the second set temperature and less than the first set temperature, controlling the indoor fan to operate at the first wind speed gear;

[0071] Determining that the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to the third set temperature and less than the second set temperature, controlling the indoor fan to operate at the second wind speed gear;

[0072] Determining that the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to the fourth set temperature and less than the third set temperature, controlling the indoor fan to operate at the third wind speed gear;

[0073] The wind speed at the first wind speed gear is greater than the wind speed at the second wind speed gear, and the wind speed at the second wind speed gear is greater than the wind speed at the third wind speed gear.

[0074] In the air conditioner humidity control method provided by the present invention, by setting different temperature threshold intervals and corresponding to different indoor fan speed gears, refined control of indoor air flow speed and dehumidification efficiency is achieved. The specific analysis is as follows:

[0075] 1. When the actual temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to a higher set point (e.g., 2°C) and less than another higher set point (e.g., 3°C), indicating that the indoor temperature adjustment demand is relatively strong, the indoor fan is controlled to operate at the first wind speed gear (high) to quickly reach the target temperature and effectively reduce the indoor humidity. The high-speed fan can accelerate air circulation, enhance the cooling effect of the evaporator, and thus improve dehumidification efficiency.

[0076] 2. If the difference between the current indoor ambient temperature and the target ambient temperature is slightly lower (e.g., greater than or equal to 1°C and less than 2°C), it indicates that the indoor air condition needs to be adjusted appropriately to approach the target ambient condition. In this case, adjust the indoor fan to the second speed gear (medium speed) to ensure a certain dehumidification capacity while avoiding excessive energy consumption and noise.

[0077] 3. When the temperature difference further decreases to another lower range (such as greater than or equal to 0℃ and less than 1℃), approaching the target ambient temperature, it means that the air-conditioning system has almost completed the temperature regulation task. Therefore, the fan speed can be appropriately reduced to the third wind speed gear (low wind) to maintain a stable indoor microclimate while reducing unnecessary energy consumption.

[0078] This graded wind speed control strategy can flexibly adjust the fan speed according to the actual temperature difference, ensuring that the air conditioner can accurately and efficiently perform humidity control tasks in different working stages while taking into account energy saving and comfort requirements.

[0079] According to one embodiment of the present invention, referring to Figure 2 As shown, the speed of the indoor fan is controlled according to the temperature difference between the current indoor ambient temperature and the target ambient temperature, and also includes:

[0080] Determine that the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to the first set temperature, and control the indoor fan to operate at the fourth wind speed gear;

[0081] Determining that the temperature difference between the current indoor ambient temperature and the target ambient temperature is less than a fourth set temperature, controlling the indoor fan to operate at a fifth wind speed gear;

[0082] Among them, the wind speed of the fourth wind speed gear is greater than the wind speed of the first wind speed gear, and the wind speed of the fifth wind speed gear is less than the wind speed of the third wind speed gear.

[0083] In the air conditioner humidity control method of the present invention, controlling the indoor fan speed further includes:

[0084] 1. Fourth Speed ​​(Strong): When the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to a higher first set temperature threshold (e.g., 3°C), indicating that rapid temperature adjustment or dehumidification is required, the indoor fan is commanded to operate at the fourth speed. This higher speed significantly increases air circulation and heat exchange efficiency, reducing indoor temperature and humidity as quickly as possible.

[0085] 2. Fifth Speed ​​(Quiet): Conversely, if the current indoor ambient temperature is very close to or lower than the target ambient temperature (for example, the temperature difference is less than 0°C), the air conditioning system should enter a stable state or energy-saving mode. In this case, the indoor fan is set to operate at the fifth speed, a lower speed designed to maintain the indoor microclimate while reducing noise and energy consumption, providing a more comfortable user experience.

[0086] In summary, the method of the present invention flexibly adjusts the working state of the air conditioner for different temperature difference ranges by designing wind speed control strategies at different levels, ensuring that while meeting the temperature and humidity control requirements, the energy efficiency ratio of the equipment, operating noise and user comfort requirements are also taken into account.

[0087] According to one embodiment of the present invention, determining a target evaporator coil temperature according to a target air dew point temperature includes:

[0088] T 目标 =T 蒸 +ΔT;

[0089] T 蒸 =T d ;

[0090] Among them, T 目标 is the target evaporator coil temperature, T 蒸 is the surface temperature of the evaporator coil, ΔT is the detection error value, T d is the target air dew point temperature.

[0091] The present invention sets the target evaporator coil temperature through such a calculation formula, which can effectively improve the accuracy and effect of humidity control. The specific principle is as follows:

[0092] 1. Accurately set the dew point temperature: Since the dew point temperature directly determines the conditions under which moisture in the air begins to condense and precipitate, the present invention takes into account and introduces a detection error value ΔT to ensure that the air can be dehumidified to the greatest extent possible when flowing through the evaporator, while avoiding unnecessary energy loss caused by overcooling.

[0093] 2. Introducing detection error value: Due to the actual measured evaporator coil surface temperature T 蒸 Because the target dew point temperature may be lower than the theoretical ideal due to various factors (such as sensor accuracy and response time), the target setpoint is corrected by adding a detection error value, ΔT, to ensure that the evaporator coil remains within an appropriate temperature range during actual operation. By presetting a reasonable error compensation value, these uncontrollable factors can be offset to a certain extent, thereby more accurately achieving the evaporator operating state corresponding to the target dew point temperature.

[0094] 3. Dynamic Optimization Control: This method allows the air conditioner to make real-time adjustments based on the target air dew point temperature obtained in real time during operation, improving the flexibility and accuracy of humidity control. It helps maintain appropriate temperature and humidity levels under various indoor environmental conditions, meeting user comfort needs while also improving the overall energy efficiency performance of the air conditioning system.

[0095] According to one embodiment of the present invention, referring to Figure 3 As shown, obtaining the target air dew point temperature includes:

[0096] S301, obtaining the current indoor ambient temperature, target relative humidity, and wet enthalpy diagram;

[0097] S302: Determine a corresponding target air dew point temperature according to the current indoor ambient temperature, target relative humidity, and a humidity-enthalpy diagram.

[0098] In this embodiment of the present invention, the specific steps of obtaining the target air dew point temperature are as follows:

[0099] Get the current indoor ambient temperature: First, read and record the actual air temperature in the room in real time through a sensor or measuring device.

[0100] Get target relative humidity: Determine the target relative humidity value to which the indoor air needs to be adjusted based on user settings.

[0101] Preset enthalpy chart: A enthalpy chart is a graph that describes the relationship between dry-bulb temperature, wet-bulb temperature, and moisture content in moist air. In this process, a pre-set enthalpy chart is used to generate the corresponding enthalpy chart data.

[0102] Determine the target air dew point temperature using a hygro-enthalpy diagram: Based on the known current indoor ambient temperature and target relative humidity, find the dew point temperature corresponding to these parameters on the hygro-enthalpy diagram. The dew point temperature is the temperature at which air cools to saturation while maintaining a constant water vapor partial pressure. Therefore, finding this intersection on the hygro-enthalpy diagram yields the target air dew point temperature.

[0103] Therefore, the method of the embodiment of the present invention collects the actual indoor temperature and target humidity information, and uses the tool of the wet enthalpy diagram to accurately calculate the target dew point temperature required to achieve the preset humidity conditions, thereby guiding the air-conditioning system to accurately control the operating parameters such as the evaporator coil temperature to achieve effective regulation of indoor temperature and humidity.

[0104] According to one embodiment of the present invention, referring to Figure 4 As shown, obtaining the target air dew point temperature includes:

[0105] S401, obtaining target ambient temperature, target relative humidity, and wet enthalpy diagram;

[0106] S402: Determine a corresponding target air dew point temperature according to the target ambient temperature, the target relative humidity, and the humidity enthalpy diagram.

[0107] Different from the above-mentioned embodiment, the method for obtaining the target air dew point temperature provided in the embodiment of the present invention mainly includes the following steps:

[0108] Get the target ambient temperature: The target ambient temperature here is not the current indoor temperature measured in real time, but a preset desired air temperature value.

[0109] Obtaining Target Relative Humidity: Similarly, set a desired target relative humidity based on user-specific needs or comfort criteria.

[0110] Calculation using a wet enthalpy diagram: Combine the target ambient temperature and target relative humidity to find the corresponding state point on the wet enthalpy diagram, and then determine the corresponding target air dew point temperature.

[0111] Compared to the previous method of adjusting the air conditioning system to achieve the desired dew point temperature based on the real-time indoor ambient temperature and target relative humidity, this solution has the following practical advantages:

[0112] Faster cooling speed: If the air conditioning system operates directly according to the preset target ambient temperature without considering the real-time indoor conditions, it may be able to lower the air temperature faster because it does not need to wait for the indoor temperature to naturally rise to a certain set point before adjusting.

[0113] Low humidity control accuracy: Because the system doesn't monitor and adjust humidity based on the current indoor humidity, it may not accurately maintain the target relative humidity level if the indoor humidity deviates from the target. For example, if the indoor humidity is already below the target, continued cooling may cause the humidity to drop further. Conversely, if the indoor humidity is already above the target, relying solely on the preset target ambient temperature may not effectively remove excess moisture, resulting in excessive humidity.

[0114] In summary, this method is suitable for situations where a predetermined temperature condition needs to be reached quickly, but it may not be as effective as a real-time feedback control strategy when refined humidity control is required. For locations with high humidity requirements (such as data centers and museums), the aforementioned strategy of real-time monitoring and adjustment is more appropriate. Therefore, the method of the present invention can be adapted to a variety of different situations, thereby meeting the diverse needs of users.

[0115] According to one embodiment of the present invention, the humidity control method of the air conditioner of the present invention includes:

[0116] Re-obtain the target air dew point temperature every preset period;

[0117] Determine the target evaporator coil temperature based on the target air dew point temperature;

[0118] Control the speed of the indoor fan and the operating frequency of the compressor so that the current evaporator coil temperature reaches the evaporator target coil temperature.

[0119] In the air conditioner humidity control method provided by the present invention, continuous and precise control of indoor humidity is achieved by periodically acquiring and updating the target air dew point temperature and dynamically adjusting the evaporator coil temperature, indoor fan speed, and compressor operating frequency. The specific analysis is as follows:

[0120] 1. Periodically obtain the target air dew point temperature: Every preset period (e.g., 5 minutes), the target relative humidity is re-read or calculated, and the corresponding target air dew point temperature is determined based on the humidification enthalpy diagram. This real-time monitoring and adjustment ensures that the air conditioning system can quickly respond to environmental changes and adapt to different humidity requirements under different time periods or conditions.

[0121] 2. Determine the target evaporator coil temperature: Based on the latest target air dew point temperature, a pre-set algorithm is used to calculate the target evaporator coil temperature that should be maintained to achieve the best dehumidification effect.

[0122] 3. Dynamically control indoor fan speed and compressor operating frequency: To ensure the current evaporator coil temperature reaches the target value as quickly and stably as possible, the controller adjusts the indoor fan speed based on the actual temperature difference and changes the compressor operating frequency through intelligent control methods such as PID. The fan speed affects the speed and contact time of air flowing through the evaporator, while the compressor operating frequency directly affects the refrigerant circulation speed and cooling capacity. These two factors work together to ensure efficient dehumidification.

[0123] In summary, this cyclic detection and control method effectively improves the humidity control accuracy and response speed of the air conditioner under various working conditions, which not only improves the user's comfort experience, but also has a good energy-saving effect.

[0124] The humidity control device for an air conditioner provided by the present invention is described below. The humidity control device for an air conditioner described below and the humidity control method for an air conditioner described above can be referred to each other.

[0125] According to an embodiment of the second aspect of the present invention, referring to Figure 5As shown, the present invention also provides a humidity control device for an air conditioner, which mainly includes: an acquisition module 501, a determination module 502, and a control module 503. The acquisition module 501 is used to obtain a target air dew point temperature; the determination module 502 is used to determine a target evaporator coil temperature based on the target air dew point temperature; and the control module 503 is used to control the speed of the indoor fan and the operating frequency of the compressor so that the current evaporator coil temperature reaches the target evaporator coil temperature.

[0126] In this embodiment of the present invention, the air conditioner humidity control device adopts a modular design, specifically including three main parts:

[0127] 1. Acquisition module 501: This module is responsible for acquiring the target air dew point temperature in real time or periodically.

[0128] 2. Determination module 502: Based on the target air dew point temperature provided by acquisition module 501, this module uses corresponding algorithms or refers to physical models such as wet enthalpy diagrams to calculate the target coil temperature that the evaporator should maintain to ensure the ideal dehumidification effect.

[0129] 3. Control Module 503: This module acts as an actuator, receiving the target evaporator coil temperature calculated by Determination Module 502 and adjusting the operating states of the air conditioning system's internal components accordingly, such as controlling the indoor fan speed and compressor operating frequency. Precisely adjusting the fan speed changes the speed and contact time of air flowing through the evaporator; adjusting the compressor operating frequency regulates the refrigerant circulation rate and cooling capacity output. Together, these ensure that the current evaporator coil temperature quickly and accurately approaches or reaches the target setpoint.

[0130] The design of this humidity control device achieves a high degree of automation and precision in the humidity adjustment function of the air conditioner, which not only improves the user's comfort experience, but also optimizes energy efficiency and adapts to usage needs under different climatic conditions.

[0131] According to an embodiment of the third aspect of the present invention, referring to Figure 6As shown, the present invention further provides an air conditioner, which may include: a processor 601, a communications interface 602, a memory 603, and a communications bus 604. The processor 601, the communications interface 602, and the memory 603 communicate with each other via the communications bus 604. The processor 601 may invoke logic instructions in the memory 603 to execute a humidity control method for the air conditioner, the method comprising: obtaining a target air dew point temperature; determining a target evaporator coil temperature based on the target air dew point temperature; and controlling the speed of the indoor fan and the operating frequency of the compressor so that the current evaporator coil temperature reaches the target evaporator coil temperature.

[0132] In addition, the logic instructions in the above-mentioned memory 603 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention, 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. The computer software product is stored in a storage medium and includes several instructions for enabling 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 method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as 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.

[0133] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the humidity control method of the air conditioner provided by the above methods, which includes: obtaining the target air dew point temperature; determining the evaporator target coil temperature based on the target air dew point temperature; controlling the speed of the indoor fan and the operating frequency of the compressor so that the current evaporator coil temperature reaches the evaporator target coil temperature.

[0134] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the humidity control method for the air conditioner provided by the above methods is implemented, and the method includes: obtaining the target air dew point temperature; determining the evaporator target coil temperature based on the target air dew point temperature; controlling the speed of the indoor fan and the operating frequency of the compressor so that the current evaporator coil temperature reaches the evaporator target coil temperature.

[0135] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0136] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiments.

[0137] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A humidity control method for an air conditioner, characterized in that: include: Get the target air dew point temperature; determining a target evaporator coil temperature according to the target air dew point temperature; The speed of the indoor fan and the operating frequency of the compressor are controlled so that the current evaporator coil temperature reaches the target evaporator coil temperature.

2. The humidity control method for an air conditioner according to claim 1, wherein: Controlling the speed of the indoor fan and the operating frequency of the compressor so that the current evaporator coil temperature reaches the target evaporator coil temperature includes: According to the temperature difference between the current indoor ambient temperature and the target ambient temperature, the speed of the indoor fan is controlled, and the operating frequency of the compressor is controlled based on the initial set frequency using the PID adjustment method to make the current evaporator coil temperature reach the evaporator target coil temperature.

3. The humidity control method for an air conditioner according to claim 2, wherein: Control the speed of the indoor fan based on the temperature difference between the current indoor ambient temperature and the target ambient temperature, including: Determining that the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to the second set temperature and less than the first set temperature, controlling the indoor fan to operate at the first wind speed gear; Determining that the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to the third set temperature and less than the second set temperature, controlling the indoor fan to operate at the second wind speed gear; Determining that the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to the fourth set temperature and less than the third set temperature, controlling the indoor fan to operate at the third wind speed gear; The wind speed at the first wind speed gear is greater than the wind speed at the second wind speed gear, and the wind speed at the second wind speed gear is greater than the wind speed at the third wind speed gear.

4. The humidity control method for an air conditioner according to claim 3, wherein: Controlling the speed of the indoor fan based on the temperature difference between the current indoor ambient temperature and the target ambient temperature also includes: Determine that the temperature difference between the current indoor ambient temperature and the target ambient temperature is greater than or equal to the first set temperature, and control the indoor fan to operate at the fourth wind speed gear; Determining that the temperature difference between the current indoor ambient temperature and the target ambient temperature is less than a fourth set temperature, controlling the indoor fan to operate at a fifth wind speed gear; Among them, the wind speed of the fourth wind speed gear is greater than the wind speed of the first wind speed gear, and the wind speed of the fifth wind speed gear is less than the wind speed of the third wind speed gear.

5. The humidity control method for an air conditioner according to claim 1, wherein: Determining a target evaporator coil temperature according to the target air dew point temperature includes: T 目标 =T 蒸 +ΔT; T 蒸 =T d ; Among them, T 目标 is the target evaporator coil temperature, T 蒸 is the surface temperature of the evaporator coil, ΔT is the detection error value, T d is the target air dew point temperature.

6. The humidity control method for an air conditioner according to claim 1, wherein: Get the target air dew point temperature, including: Get the current indoor ambient temperature, target relative humidity, and wet enthalpy diagram; Determine the corresponding target air dew point temperature based on the current indoor ambient temperature, target relative humidity, and enthalpy diagram.

7. The humidity control method for an air conditioner according to claim 1, wherein: Get the target air dew point temperature, including: Obtain target ambient temperature, target relative humidity and wet enthalpy diagram; Determine the corresponding target air dew point temperature based on the target ambient temperature, target relative humidity, and the wet enthalpy diagram.

8. The humidity control method for an air conditioner according to any one of claims 1 to 7, characterized in that: include: Re-obtain the target air dew point temperature every preset period; determining a target evaporator coil temperature according to the target air dew point temperature; The speed of the indoor fan and the operating frequency of the compressor are controlled so that the current evaporator coil temperature reaches the target evaporator coil temperature.

9. A humidity control device for an air conditioner, characterized in that: include: An acquisition module, used to obtain a target air dew point temperature; a determination module, configured to determine a target evaporator coil temperature according to the target air dew point temperature; The control module is used to control the speed of the indoor fan and the operating frequency of the compressor so that the current evaporator coil temperature reaches the evaporator target coil temperature.

10. An air conditioner comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the humidity control method for the air conditioner according to any one of claims 1 to 8 is implemented.

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