Air conditioner condensate water recycling atomization control method

Abstract

The present application relates to the technical field of condensate water recovery atomization, and proposes an air conditioner condensate water recovery atomization control method, which comprises the following steps: based on the condensate water generation characteristics of an air conditioner system and the indoor humidity control demand; detecting the total amount of condensate water generated by an evaporator, filtering and sterilizing the condensate water, and monitoring the water quality purity parameters after the treatment; based on the output results of the water quality treatment stage and the indoor relative humidity, executing the atomization decision stage; according to the water quality purity parameters, the condensate water temperature, and the deviation value of the indoor relative humidity and the preset target humidity, converting the condensate water into adjustable water mist through an ultrasonic atomizer and releasing the water mist into the indoor environment; based on the conflict state that the total amount of condensate water is lower than the atomization safety threshold but the indoor relative humidity is lower than the preset target humidity, adjusting the air conditioner refrigeration parameters according to the user demand temperature and the outdoor humidity parameters; based on the output feedback of the atomization decision stage and the air conditioner adjustment stage, updating the condensate water total amount detection value, the water quality purity parameters, and the indoor relative humidity.

Description

Technical Field

[0001] This invention relates to the field of condensate recovery and atomization technology, and in particular to a control method for condensate recovery and atomization of air conditioning water. Background Technology

[0002] The efficient recovery and utilization of air conditioning condensate is key to improving the energy efficiency of air conditioning systems and the comfort of the indoor environment.

[0003] Currently, traditional air conditioning systems mostly use simple filtration and direct discharge of condensate. For indoor humidity control, they usually rely on external humidifiers and adjust the dehumidification capacity of the air conditioner based on indoor humidity sensor data to achieve the target humidity.

[0004] Traditional air conditioner condensate recovery and treatment methods are too simplistic, failing to conduct in-depth water quality treatment and safety assessments on the condensate. This results in the condensate failing to meet indoor atomization requirements, leading to water waste, and making it difficult to achieve efficient and energy-saving optimization in humidity control. Summary of the Invention

[0005] To address the aforementioned shortcomings, the present invention aims to propose a method for controlling the atomization of condensate recovery in air conditioning systems. This method seeks to solve the problem of water waste caused by the direct discharge of condensate in traditional air conditioning systems, as well as the technical challenges of low energy efficiency and inaccurate humidity control resulting from reliance on external humidification equipment.

[0006] To achieve this objective, the present invention adopts the following technical solution: A method for controlling the atomization of air conditioner condensate recovery, the method comprising the following steps: S1: Based on the condensate generation characteristics of the air conditioning system and the indoor humidity control requirements, the condensate treatment process is divided into the condensate recovery stage, the water quality treatment stage, the atomization decision stage, and the air conditioning regulation stage. S2: Based on the requirements of the condensate recovery stage, detect the total amount of condensate produced by the evaporator, filter and sterilize the condensate, and monitor the purity parameters of the treated water. S3: Based on the output results of the water treatment stage and the real-time indoor relative humidity, the atomization decision stage is executed, including distributing condensate to the atomization or external discharge path; S4: When the condensate is distributed to the atomization path, based on the water purity parameters, condensate temperature, and the deviation between the indoor relative humidity and the preset target humidity, the condensate is converted into adjustable water mist by the ultrasonic atomizer and released into the indoor environment. S5: When the condensate is distributed to the external drainage path, the air conditioning cooling parameters are adjusted according to the user's required temperature and outdoor humidity parameters, based on the conflict state that the total amount of condensate is lower than the atomization safety threshold but the indoor relative humidity is lower than the preset target humidity. S6: Based on the output feedback of the atomization decision stage and the air conditioning adjustment stage, update the total condensate detection value, water purity parameters and indoor relative humidity in real time.

[0007] Preferably, in step S1, the condensate generation characteristics include the air conditioning cooling temperature setpoint, evaporator surface temperature, indoor and outdoor air humidity difference, indoor ambient temperature, air conditioning outlet air speed, and continuous air conditioning operation time. The cooling temperature setting is negatively correlated with the evaporator surface temperature. When it is necessary to improve the water vapor condensation efficiency, the cooling temperature setting is lowered, thereby reducing the evaporator surface temperature and increasing the temperature difference between the evaporator and the air flowing through it.

[0008] Preferably, in step S2, the filtration and sterilization treatment includes passing the condensate through a microporous filter to remove suspended particulate matter, and then guiding the water flow through an activated carbon adsorption layer to remove dissolved organic matter and odor components. Finally, ultraviolet radiation was used to disinfect the water flow. The intensity of ultraviolet radiation was adjusted according to the water flow rate and water quality monitoring results. At the same time, the transmittance, conductivity and microbial indicators of the treated water were monitored as parameters for evaluating water purity.

[0009] Preferably, the priority of distributing condensate to the atomization path follows the principle of water quality safety first, humidity comfort second, and water resource utilization third; In step S3, it is included to determine whether the water purity parameter meets the atomization water standard: if it does not meet the standard, the condensate is allocated to the external discharge path; if the water quality meets the standard, the deviation range between the real-time indoor relative humidity and the preset target humidity is further determined. When the indoor relative humidity is detected to be lower than the first humidity threshold, the condensate availability assessment stage is entered: if the current total condensate volume is higher than the atomization safety threshold and the predicted condensate generation in the next cycle can maintain the continuous atomization demand, then the condensate will be allocated to the atomization path. If the indoor relative humidity is between the first and second humidity thresholds, it enters standby mode and maintains the current allocation path. If the indoor relative humidity is higher than the second humidity threshold, the condensate will be allocated to the external drainage path regardless of the water quality and quantity.

[0010] Preferably, step S4 includes: A safe operating threshold range for the atomizer is established based on water purity parameters. When the water quality parameters are detected to be close to the critical value, the maximum allowable atomization rate is reduced. Based on the difference between the condensate temperature and the optimal atomization temperature range, a feedforward compensation algorithm is used to adjust the oscillation frequency of the ultrasonic atomizer, while phase feedback is used to control the oscillation frequency of the ultrasonic atomizer. Based on the magnitude and trend of the deviation between the indoor relative humidity and the preset target humidity, the target atomization rate setpoint is calculated using a fuzzy PID control algorithm. Based on the target atomization rate setting, a multi-objective optimization control algorithm is used to generate the final drive signal of the ultrasonic atomizer and adjust the atomization rate of the condensate. By monitoring the operating current, voltage, and vibration frequency characteristics of the ultrasonic atomizer in real time, a fault prediction and health management process based on a condition observer is established. When a performance degradation trend or abnormal operating state is detected, a degraded operation mode or preventive maintenance procedure is automatically triggered.

[0011] Preferably, the feedforward compensation algorithm satisfies the following relation: ; ; in, This represents the target frequency after feedforward compensation. This indicates the fundamental oscillation frequency of the ultrasonic atomizer. Represents the proportional gain coefficient. Indicates the real-time temperature of condensate. Median of optimal atomization temperature The difference, Represents the integral gain coefficient. This represents the actual driving frequency after phase feedback correction. Indicates the feedback gain coefficient. Indicates the measured oscillation frequency. This indicates the expected oscillation frequency.

[0012] Preferably, the fuzzy PID control algorithm satisfies the following relationship: ; ; ; This represents the output of the fuzzy PID controller. Indicates the preset target humidity Compared with the current humidity detection The real-time difference Indicates the rate of change of deviation. This represents the actual proportional gain after fuzzy rule adjustment. This represents the actual integral gain after fuzzy rule adjustment. This represents the actual differential gain after fuzzy rule adjustment. Indicates the initial scaling factor. Represents the initial integral coefficients. Represents the initial differential coefficients. This indicates the proportional gain correction amount. This represents the integral gain correction amount. This represents the differential gain correction amount. Indicates the target atomization rate, This indicates the output normalization coefficient. This represents the minimum rate guarantee coefficient. This indicates the minimum permissible atomization rate.

[0013] Preferably, the indoor unit of the air conditioner is equipped with at least two distributed atomizing units at different heights; In step S4, the release method includes: When in normal release mode, the start and stop sequence of condensate release is coupled with the operating cycle of the air conditioning compressor. Release begins after the first preset delay after the compressor starts and stops after the second preset delay before the compressor stops. During the release, the air conditioning air guide vane is controlled to swing horizontally. When vertical temperature stratification exists indoors, the vertical uniform release mode is activated: The distributed atomizing unit is divided into upper and lower parts. By controlling the distributed atomizing unit, a time-sharing alternating working strategy is adopted: the atomizing unit located at the upper part of the device is activated first and releases water mist upward. After a certain interval, the atomizing unit located at the lower part of the device is activated and releases water mist horizontally or slightly downward. Through the alternation and coordination of the release time of the upper and lower units, the vertical humidity gradient caused by the rising hot air is weakened. When a change in the distribution of people indoors is detected, the directional follow-up release mode is activated: the release axis of the distributed atomizing unit is controlled to face the center of the densely populated area, and the release direction is adjusted with a preset lead amount according to the movement trend of people indoors to track and humidify the target area. For areas where no one is present, the release ports in the corresponding directions are closed or their duty cycles are reduced.

[0014] Preferably, step S5 includes: Start the air conditioning system parameter adjustment sequence with higher priority, lower the cooling temperature setpoint to increase dehumidification, increase the fan speed on the evaporator side in stages until the highest level to increase air circulation, maintain the state for a predetermined time window and observe the change in condensate generation rate. When the outdoor air humidity is higher than the current indoor humidity, and the temperature difference is within the allowable range, the fresh air damper is briefly opened to introduce some outdoor humid air, which is then cooled by the evaporator, thus increasing the amount of recyclable condensate.

[0015] One of the above technical solutions has the following advantages or beneficial effects: This invention effectively solves problems such as uneven condensate utilization, slow indoor humidity control, and low equipment efficiency by scientifically dividing the process into stages, dynamically allocating resources, and providing real-time feedback adjustments. First, based on the condensate generation patterns and indoor humidity requirements, the process is refined into stages such as recovery, water treatment, atomization decision-making, and air conditioning adjustment, laying the foundation for subsequent precise control. In the recovery stage, the total amount of condensate is accurately detected and filtered and sterilized to ensure water safety. After water treatment, the condensate distribution path is intelligently determined based on real-time indoor humidity data, achieving optimal resource allocation. When condensate is used for atomization, it is converted into suitable water mist by an ultrasonic atomizer based on water quality, temperature, and humidity deviations, precisely adjusting indoor humidity. If condensate is insufficient and indoor humidity is low, the air conditioning cooling parameters will be dynamically adjusted according to user temperature requirements and outdoor humidity to compensate for the humidity gap. This invention provides real-time feedback on the total condensate volume, water quality, and indoor humidity, ensuring the system is dynamically optimized based on the latest data, achieving efficient, flexible, and energy-saving indoor humidity control. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a flowchart of the air conditioner condensate recovery atomization control method provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the air conditioning system structure corresponding to the air conditioning condensate recovery and atomization control method provided in this embodiment of the invention; Figure 3 This is a diagram showing the coupling relationship between the water mist release sequence and the compressor working cycle of the air conditioner condensate water recovery and atomization control method provided in this embodiment of the invention. Figure 4 This is a schematic diagram of the vertical uniform release mode of the air conditioner condensate recovery atomization control method provided in the embodiment of the present invention; Figure 5 This is a schematic diagram of the directional following release mode of the air conditioner condensate recovery atomization control method provided in the embodiment of the present invention; Figure 6 This is a schematic diagram of the release method in step S4 of the air conditioner condensate recovery atomization control method provided in the embodiment of the present invention. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In this invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0020] A method for controlling the atomization of air conditioning condensate recovery, such as Figure 1 and Figure 2 As shown, in a preferred embodiment of the present invention, the air conditioner condensate recovery atomization control method includes the following steps: S1: Based on the condensate generation characteristics of the air conditioning system and the indoor humidity control requirements, the condensate treatment process is divided into the condensate recovery stage, the water quality treatment stage, the atomization decision stage, and the air conditioning regulation stage. It should be noted that the condensate treatment process refers to the complete operational flow of collecting, treating, distributing, and utilizing air conditioning condensate. The condensate recovery stage is mainly responsible for collecting the condensate produced by the evaporator to provide raw materials for subsequent treatment. The water treatment stage involves filtering and sterilizing the collected condensate to ensure that the water quality meets safe atomization standards. The atomization decision stage determines whether the condensate is used for atomization or discharged based on real-time data of water quality and indoor humidity. The air conditioning regulation stage increases condensate generation by adjusting air conditioning parameters when condensate is insufficient to meet indoor humidity regulation needs.

[0021] Understandably, the purpose of step S1 is to scientifically divide the condensate treatment process, making it more targeted and efficient. By dividing it into stages, the collection, treatment, distribution, and air conditioning parameter adjustment of condensate can be managed in a refined manner, ensuring that each stage plays its proper role, thereby achieving efficient utilization of condensate and precise control of indoor humidity. This staged approach allows for rapid identification and resolution of problems in different stages of the air conditioning system, improving overall operational efficiency.

[0022] Specifically, in implementing step S1, the four stages of condensate treatment are first determined based on the condensate generation characteristics of the air conditioning system and the indoor humidity control requirements. In the condensate recovery stage, a collection pan and recovery pipes are installed to ensure condensate flows smoothly from the evaporator. In the water treatment stage, a filtration device and sterilization module are configured to purify the condensate. In the atomization decision stage, humidity sensors and a central control system determine the condensate distribution path based on water quality and humidity data. In the air conditioning regulation stage, parameters such as cooling temperature and fan speed are adjusted to increase condensate generation. These stages work together to form a complete condensate treatment process.

[0023] S2: Based on the requirements of the condensate recovery stage, detect the total amount of condensate produced by the evaporator, filter and sterilize the condensate, and monitor the purity parameters of the treated water. It should be noted that total condensate volume detection refers to the real-time monitoring and calculation of the amount of condensate in the collection pan using devices such as water level sensors or flow meters. Filtration and sterilization treatment employs technologies such as microporous filtration devices, activated carbon adsorption layers, and ultraviolet sterilization modules to remove suspended particulate matter, dissolved organic matter, bacteria, and other impurities from the condensate, ensuring water quality safety. Water purity parameter monitoring refers to the testing of the treated water using devices such as conductivity sensors to obtain data such as conductivity, transmittance, and microbial indicators to assess whether the water quality meets the standards for atomized water.

[0024] Understandably, the purpose of step S2 is to accurately determine the quantity and quality of condensate, providing a basis for subsequent allocation decisions. By detecting the total amount of condensate, the generation status of condensate can be understood, determining whether the atomization requirements are met. Simultaneously, filtration and sterilization remove impurities and bacteria from the condensate, improving water purity and ensuring that the atomized water mist will not harm the indoor environment or human health. Monitoring water purity parameters allows for real-time assessment of whether the treated water quality meets standards, enabling timely detection and adjustments to ensure the safe operation of the system.

[0025] Specifically, in step S2, a float-type or capacitive water level sensor is installed in the water collection pan to monitor the total amount of condensate in real time and transmit the data to the control system. Simultaneously, the condensate passes through a microporous filter to remove suspended particles larger than 5 micrometers; an activated carbon adsorption layer adsorbs odors and dissolved organic matter; and an ultraviolet sterilization module kills bacteria with ultraviolet light. After sterilization, a conductivity sensor detects the water's conductivity, a spectrometer detects the transmittance, and microbial culture detects microbial indicators. These water purity parameters are compared with preset standards to determine whether the water quality meets the standards.

[0026] S3: Based on the output results of the water treatment stage and the real-time indoor relative humidity, the atomization decision stage is executed, including distributing condensate to the atomization or external discharge path; It should be noted that the atomization path refers to the channel and process by which treated condensate is delivered to the ultrasonic atomizer and converted into water mist before being released into the room. The external drainage path refers to the channel and method by which the condensate is directly discharged outdoors. The condensate distribution logic refers to the mechanism that makes distribution decisions based on real-time water quality and indoor humidity data, according to certain rules and algorithms, to ensure that the condensate is optimally utilized and meets indoor humidity regulation needs.

[0027] Understandably, the purpose of step S3 is to rationally allocate the destination of condensate water based on water quality and indoor humidity, thereby optimizing resource allocation. When the condensate water quality meets the standards and the indoor humidity is below the target value, the condensate water is allocated to the atomization path, effectively utilizing the condensate water, increasing indoor humidity, and improving indoor environmental comfort. Conversely, when the condensate water quality does not meet the standards or the indoor humidity has reached the target value, the condensate water is discharged externally, avoiding the impact of water mist from substandard atomization on the indoor environment and preventing resource waste. This allocation logic based on water quality and humidity enables the system to make reasonable decisions under different operating conditions, ensuring efficient utilization of condensate water and precise control of indoor humidity.

[0028] For example, the target humidity of a room is set to 50%, and the current indoor humidity is 45%. The control system detects that the conductivity of the treated condensate is 60 μS / cm, meeting the water quality standard. According to the condensate distribution logic, the condensate is distributed to the atomization path. The ultrasonic atomizer converts the condensate into water mist, which is evenly released into the room, gradually increasing the indoor humidity to the target value. If the indoor humidity sensor detects that the humidity has reached 50%, the control system distributes the condensate to the external drainage path and stops the atomization operation to prevent the indoor humidity from becoming too high. If the conductivity of the condensate is detected to be 120 μS / cm, exceeding the atomization water standard, the control system will distribute the condensate to the external drainage path regardless of the indoor humidity, ensuring a healthy and safe indoor environment.

[0029] S4: When the condensate is distributed to the atomization path, the condensate is converted into adjustable water mist and released into the indoor environment through an ultrasonic atomizer, based on the water purity parameters, condensate temperature, and the deviation between the indoor relative humidity and the preset target humidity. Water purity parameters reflect the purity of condensate and are a key indicator of atomization safety; condensate temperature affects atomization efficiency and water mist particle size; the deviation between indoor relative humidity and preset target humidity is used to adjust the atomization amount to achieve ideal indoor humidity.

[0030] In step S4, the safety of the water used for atomization is ensured by monitoring the water purity, the parameters of the ultrasonic atomizer are adjusted according to the condensate temperature to optimize the atomization effect, and the atomization amount is intelligently adjusted according to the indoor humidity deviation to achieve precise control of indoor humidity.

[0031] S5: When the condensate is distributed to the external drainage path, the air conditioning cooling parameters are adjusted according to the user's required temperature and outdoor humidity parameters, based on the conflict state that the total amount of condensate is lower than the atomization safety threshold but the indoor relative humidity is lower than the preset target humidity. Among them, the atomization safety threshold is the minimum amount of condensate required to ensure the atomizer works properly; the user-required temperature is the indoor temperature target set by the user; and the outdoor humidity parameter reflects the humidity status of the outdoor air.

[0032] When there is insufficient condensate but indoor humidity still needs to be regulated, the amount of condensate generated can be increased by adjusting the air conditioning cooling parameters, such as lowering the cooling temperature setpoint or increasing the fan speed, in order to meet the indoor humidity regulation needs.

[0033] In practice, when the total condensate volume is detected to be below the atomization safety threshold and the indoor humidity is below the target value, the air conditioning cooling temperature setting is lowered to increase the temperature difference between the evaporator surface and the air, promoting water vapor condensation. Simultaneously, the fan speed is increased to improve airflow and further increase the condensate generation rate. This state is maintained for a period of time, and changes in condensate generation are observed until the total condensate volume is sufficient for atomization or the indoor humidity reaches the target.

[0034] S6: Based on the output feedback of the atomization decision stage and the air conditioning adjustment stage, update the total condensate detection value, water purity parameters and indoor relative humidity in real time.

[0035] The output feedback during the atomization decision-making stage includes information such as atomization quantity and atomization time; the output feedback during the air conditioning adjustment stage involves the evaluation of the effect after adjusting the cooling parameters. Step S6 dynamically updates condensate-related parameters and indoor humidity through real-time monitoring and feedback, providing a basis for intelligent decision-making and precise control of the air conditioning system, ensuring that the system is optimized and adjusted according to the latest status. During the atomization decision-making and air conditioning adjustment processes, the total condensate volume, water purity, and indoor humidity are continuously monitored. Based on the atomization quantity and time in the atomization decision-making stage, and the effect of cooling parameter adjustment in the air conditioning adjustment stage, the detected values ​​of these parameters are updated in real time. The updated parameters are fed back to the control system for decision-making and adjustment in the next stage, forming a closed-loop control.

[0036] For example, assuming the target indoor humidity is 50%, the initial total condensate volume is 200 ml, the conductivity is 60 μS / cm, the transmittance is 92%, and the indoor humidity is 40%, the system starts atomizing at a rate of 0.2 L / h for 15 minutes, atomizing 50 ml, leaving 150 ml of condensate. The indoor humidity rises to 45%, the conductivity rises to 65 μS / cm, and the transmittance drops to 90%. After a second atomization, 100 ml of condensate remains, the indoor humidity reaches 48%, the conductivity reaches 70 μS / cm, and the transmittance reaches 88%. At this point, the system pauses atomization, the air conditioning is activated, the cooling temperature is lowered to 24°C, the fan speed is increased, the condensate generation rate reaches 80 ml / h, the total volume rises back to 120 ml, and the indoor humidity stabilizes at 50%. The system updates the total condensate volume, water quality parameters, and indoor humidity, enters standby mode, and continues to monitor changes to ensure stable indoor humidity.

[0037] Preferably, in step S1, the condensate generation characteristics include the air conditioning cooling temperature setpoint, evaporator surface temperature, indoor and outdoor air humidity difference, indoor ambient temperature, air conditioning outlet air speed, and continuous air conditioning operation time. The cooling temperature setting is negatively correlated with the evaporator surface temperature. When it is necessary to improve the water vapor condensation efficiency, the cooling temperature setting is lowered, thereby reducing the evaporator surface temperature and increasing the temperature difference between the evaporator and the air flowing through it.

[0038] It should be noted that condensate formation characteristics refer to the various factors and conditions that affect condensate production. The air conditioning cooling temperature setpoint refers to the user-set target cooling temperature, which is negatively correlated with the evaporator surface temperature; that is, the lower the cooling temperature setpoint, the lower the evaporator surface temperature. The indoor-outdoor air humidity difference refers to the difference between indoor and outdoor air humidity, affecting the ease with which water vapor in the air condenses on the evaporator surface. The indoor ambient temperature refers to the temperature of the indoor air, and its difference from the evaporator surface temperature determines the efficiency of water vapor condensation upon contact with the condenser. The air conditioning outlet air velocity refers to the airflow speed at the air conditioning outlet, affecting the heat exchange efficiency between the air and the evaporator surface. The continuous operating time of the air conditioner refers to the duration of continuous operation, affecting the cumulative amount of condensate generated.

[0039] The negative correlation between air conditioner cooling temperature setpoint and evaporator surface temperature means that lowering the cooling temperature setpoint reduces the evaporator surface temperature, increasing the temperature difference between the evaporator and the air, thereby improving water vapor condensation efficiency and increasing condensate production. The greater the humidity difference between indoor and outdoor air, the higher the water vapor content in the air, and the easier it is for condensate to form on the evaporator surface. Higher indoor ambient temperature and a greater temperature difference with the evaporator surface result in higher water vapor condensation efficiency. Faster airflow from the air conditioner leads to more thorough heat exchange between the air and the evaporator surface, resulting in faster condensate formation. Longer continuous operation of the air conditioner also leads to a greater cumulative amount of condensate. By comprehensively considering these factors, the amount of condensate generated can be better predicted and controlled, providing a guarantee for subsequent treatment and utilization.

[0040] For example, an air conditioner's cooling temperature setting is 26℃, and the evaporator surface temperature is 15℃. At this time, the indoor and outdoor air humidity difference is 30%, the indoor ambient temperature is 28℃, the air conditioner's fan speed is medium, and the air conditioner runs continuously for 2 hours. Based on the condensate formation characteristics analysis, the temperature difference between the cooling temperature setting and the evaporator surface temperature is 11℃, meeting the basic conditions for water vapor condensation. The large indoor and outdoor air humidity difference results in abundant water vapor in the air, which is conducive to condensate formation. The temperature difference between the indoor ambient temperature and the evaporator surface temperature is 13℃, further improving the water vapor condensation efficiency. The medium air conditioner fan speed ensures good heat exchange between the air and the evaporator surface. After 2 hours of continuous operation, a certain amount of condensate is expected to be generated. If it is necessary to increase the amount of condensate generated, the cooling temperature setting can be lowered to 24℃, reducing the evaporator surface temperature to 13℃ and increasing the temperature difference to 15℃, thereby improving the water vapor condensation efficiency and increasing the condensate production.

[0041] Preferably, in step S2, the filtration and sterilization process includes passing the condensate through a microporous filter to remove suspended particulate matter, and then guiding the water flow through an activated carbon adsorption layer to remove dissolved organic matter and odor components. Finally, ultraviolet radiation was used to disinfect the water flow. The intensity of ultraviolet radiation was adjusted according to the water flow rate and water quality monitoring results. At the same time, the transmittance, conductivity and microbial indicators of the treated water were monitored as parameters for evaluating water purity.

[0042] It should be noted that filtration and sterilization treatment refers to a series of purification operations performed on condensate, including microfiltration, activated carbon adsorption, and ultraviolet radiation sterilization. A microfiltration device is a device that uses a filter medium with tiny pores to remove suspended particulate matter from condensate; the pore size is typically on the micrometer scale. The activated carbon adsorption layer is an adsorption medium composed of activated carbon particles, capable of adsorbing dissolved organic matter and odor components in condensate, improving the taste and odor of the water. Ultraviolet radiation sterilization is a method that utilizes the strong oxidizing and penetrating properties of ultraviolet light to destroy the cell structure of bacteria, viruses, and other microorganisms, achieving disinfection. Ultraviolet radiation intensity refers to the luminescence intensity of ultraviolet light, which is correlated with water flow velocity and water quality monitoring results. Optimal sterilization effect can be achieved by adjusting the radiation intensity. Water purity evaluation parameters include transmittance, conductivity, and microbial indicators. Transmittance reflects the degree to which suspended particulate matter and dissolved substances in the water obstruct light; conductivity indicates the electrolyte content in the water; and microbial indicators directly reflect the number of bacteria, viruses, and other microorganisms in the water.

[0043] Understandably, the purpose of step S2 is to remove impurities and bacteria from the condensate through filtration and sterilization, thereby improving water purity and ensuring it meets safe atomization standards. The microporous filtration device effectively intercepts suspended particulate matter in the condensate, preventing it from entering subsequent treatment stages and avoiding equipment clogging and water quality impact. The activated carbon adsorption layer further removes dissolved organic matter and odor components from the condensate, improving the water's chemical properties and sensory quality. Ultraviolet radiation sterilization, as a highly efficient disinfection method, can kill bacteria, viruses, and other microorganisms in the condensate, ensuring that the atomized water mist does not harm human health. By monitoring water purity evaluation parameters, the treated water quality can be assessed in real time to determine if it meets standards, allowing for timely adjustments to the filtration and sterilization process and ensuring safe and reliable water quality.

[0044] For example, after air conditioner condensate passes through a microporous filtration device, the suspended particulate matter content is reduced to below 5 mg / L. Subsequently, it flows through an activated carbon adsorption layer, reducing the dissolved organic matter content by 30%, essentially removing odor components, and significantly improving the taste and odor of the water. When entering the ultraviolet radiation sterilization module, based on monitoring results of a water flow rate of 10 liters / minute and a conductivity of 80 μS / cm, the ultraviolet radiation intensity is adjusted to 30 milliwatts per square centimeter. After sterilization, the condensate has a light transmittance of 92%, a conductivity of 55 μS / cm, and microbial indicators show a total bacterial count of less than 100 CFU / mL, meeting the standards for atomized water. If the light transmittance at this point is 85%, lower than the preset standard of 90%, the ultraviolet radiation intensity is appropriately increased to 35 milliwatts per square centimeter, the radiation time is extended, and sterilization is performed again until the light transmittance reaches the standard.

[0045] Preferably, the priority of distributing condensate to the atomization path follows the principle of water quality safety first, humidity comfort second, and water resource utilization third; In step S3, it is included to determine whether the water purity parameter meets the atomization water standard: if it does not meet the standard, the condensate is allocated to the external discharge path; if the water quality meets the standard, the deviation range between the real-time indoor relative humidity and the preset target humidity is further determined. When the indoor relative humidity is detected to be lower than the first humidity threshold, the condensate availability assessment stage is entered: if the current total condensate volume is higher than the atomization safety threshold and the predicted condensate generation in the next cycle can maintain the continuous atomization demand, then the condensate will be allocated to the atomization path. If the indoor relative humidity is between the first and second humidity thresholds, it enters standby mode and maintains the current allocation path. If the indoor relative humidity is higher than the second humidity threshold, the condensate will be allocated to the external drainage path regardless of the water quality and quantity.

[0046] It should be noted that the priority principle for allocating condensate to the atomization path means that when making condensate allocation decisions, the first consideration is water quality safety, ensuring that the atomized water will not harm human health; secondly, humidity comfort is considered, deciding whether to perform atomization operation based on indoor humidity to improve indoor environmental comfort; and finally, water resource utilization is considered, making the most rational use of condensate and reducing waste. Water purity parameters refer to various indicators used to assess whether the condensate water quality meets the standards for atomization water, such as transmittance, conductivity, and microbiological indicators. The atomization safety threshold is the minimum limit set for the total amount of condensate to ensure the safety and reliability of the atomization process. When the total amount of condensate is below this threshold, it may not meet the normal operation requirements of the atomization equipment, posing a safety hazard. The first humidity threshold and the second humidity threshold are two humidity limits set according to indoor humidity control requirements, used to determine whether indoor humidity needs to be adjusted by atomization. Condensate availability assessment refers to a comprehensive evaluation of the current total amount of condensate and the predicted condensate generation for the next cycle to determine whether it can continuously meet the atomization requirements.

[0047] Understandably, the purpose of step S3 is to rationally allocate condensate water paths based on the priority principles of water quality safety, humidity comfort, and water resource utilization, thereby achieving precise control of indoor humidity and efficient resource utilization. First, water quality safety is a prerequisite for atomization operation. Atomization can only be performed when the purity parameters of the condensate water meet the standards for atomization water; otherwise, the condensate water should be discharged to avoid affecting the indoor environment and human health due to water quality issues. Second, humidity comfort is a crucial factor in determining whether atomization should be performed. When the indoor relative humidity is below the first humidity threshold, it indicates low indoor humidity, requiring atomization humidification. When the indoor humidity is between the first and second humidity thresholds, the current allocation path is maintained based on the actual situation. However, when the indoor humidity is above the second humidity threshold, regardless of water quality and quantity, the condensate water should be discharged to prevent excessive indoor humidity from affecting comfort. Finally, under the premise of satisfying water quality safety and humidity comfort, condensate water should be utilized as rationally as possible to reduce resource waste. This priority allocation logic ensures optimal utilization of condensate water, precise regulation of indoor humidity, and safe operation of the system.

[0048] For example, a room has a preset target humidity of 50%, a first humidity threshold of 45%, and a second humidity threshold of 55%. The control system detects that the treated condensate has a conductivity of 60 μS / cm, a light transmittance of 95%, meets microbial indicators, and its water purity parameters are up to standard. At this time, the indoor humidity sensor shows an indoor humidity of 43%, lower than the first humidity threshold of 45%. The system then enters the condensate availability assessment phase, detecting a current total condensate volume of 300 ml, higher than the atomization safety threshold of 200 ml, and predicting that the next cycle's condensate generation will be 100 ml / hour, sufficient to maintain continuous atomization. Therefore, the condensate is allocated to the atomization path, and the ultrasonic atomizer is activated to convert the condensate into water mist and release it into the room, gradually increasing the indoor humidity to the target value. If the indoor humidity sensor shows that the humidity has reached 55%, higher than the second humidity threshold of 55%, then regardless of the condensate quality and quantity, the control system will allocate the condensate to the external drainage path and stop the atomization operation to prevent excessive indoor humidity. If the indoor humidity is between 45% and 55%, such as 50%, then maintain the current allocation path, continue to monitor humidity changes, and adjust the allocation decision according to the actual situation.

[0049] Preferably, step S4 includes: A safe operating threshold range for the atomizer is established based on water purity parameters. When the water quality parameters are detected to be close to the critical value, the maximum allowable atomization rate is reduced. Based on the difference between the condensate temperature and the optimal atomization temperature range, a feedforward compensation algorithm is used to adjust the oscillation frequency of the ultrasonic atomizer, while phase feedback is used to control the oscillation frequency of the ultrasonic atomizer. Based on the magnitude and trend of the deviation between the indoor relative humidity and the preset target humidity, the target atomization rate setpoint is calculated using a fuzzy PID control algorithm. Based on the target atomization rate setting, a multi-objective optimization control algorithm is used to generate the final drive signal of the ultrasonic atomizer and adjust the atomization rate of the condensate. By monitoring the operating current, voltage, and vibration frequency characteristics of the ultrasonic atomizer in real time, a fault prediction and health management process based on a condition observer is established. When a performance degradation trend or abnormal operating state is detected, a degraded operation mode or preventive maintenance procedure is automatically triggered.

[0050] It should be noted that the safe operating threshold range of the atomizer refers to the parameter range within which the ultrasonic atomizer can operate safely, set according to water purity parameters. When the water quality parameters approach the critical value, the maximum allowable atomization rate is reduced to prevent atomizer malfunction or reduced atomization effect due to water quality issues. The feedforward compensation algorithm is a control method that pre-adjusts the oscillation frequency of the ultrasonic atomizer based on the difference between the condensate temperature and the optimal atomization temperature range. It is used for rapid coarse adjustment of the oscillation frequency to improve atomization efficiency. Phase feedback control is a control method that adjusts the oscillation frequency in real time by detecting the deviation between the actual and expected frequencies of the ultrasonic atomizer. It is used for precise fine-tuning of the oscillation frequency to ensure atomization quality. The fuzzy PID control algorithm is an algorithm combining fuzzy logic and PID control. It can dynamically adjust control parameters based on the magnitude and trend of the deviation between the indoor relative humidity and the preset target humidity, calculating the target atomization rate setpoint and achieving precise control of the atomization rate. Multi-objective optimization control algorithms are algorithms that generate the optimal final drive signal while considering multiple potentially conflicting objectives such as humidity regulation speed, work efficiency, and system energy consumption. This is used to regulate the atomization speed of condensate water and achieve an optimal balance among multiple objectives. Fault prediction and health management steps refer to the process of monitoring the ultrasonic atomizer's operating current, voltage, and vibration frequency in real time, using a state observer to assess the atomizer's operating status, predict potential faults, and proactively implement degraded operating modes or preventative maintenance measures to ensure system reliability and lifespan.

[0051] Understandably, the purpose of step S4 is to achieve precise control and health management of the ultrasonic atomizer through various control algorithms and technologies, ensuring the safety, efficiency, and stability of the condensate atomization process. First, a safe operating threshold range for the atomizer is established based on water purity parameters. When the water quality parameters approach the critical value, the maximum allowable atomization rate is reduced to prevent atomizer malfunction or poor atomization effect due to water quality issues. Second, by combining feedforward compensation algorithms and phase feedback control, the oscillation frequency of the ultrasonic atomizer is rapidly coarsely adjusted and precisely finely tuned to adapt to changes in condensate temperature, ensuring atomization efficiency and quality. The fuzzy PID control algorithm dynamically adjusts control parameters based on indoor humidity deviation and its changing trends, calculating the target atomization rate setpoint to achieve precise control of the atomization rate and ensure stable indoor humidity regulation. The multi-objective optimization control algorithm, considering multiple objectives such as humidity regulation speed, operating efficiency, and system energy consumption, generates the optimal final drive signal, enabling the atomizer to operate at its best under different operating conditions, achieving an optimized balance of multiple objectives. Meanwhile, through fault prediction and health management steps, the operating status of the atomizer is monitored in real time, faults are predicted in advance and corresponding measures are taken to ensure the long-term stable operation of the system and reduce maintenance costs and downtime.

[0052] Specifically, in step S4, firstly, based on water purity parameters such as conductivity, transmittance, and microbial indicators, a safe operating threshold range for the ultrasonic atomizer is established. For example, the safe upper limit for conductivity is set to 100 μS / cm. When the conductivity is detected to be close to this value, the maximum allowable atomization rate of the atomizer is reduced, such as from 0.5 liters / hour to 0.3 liters / hour, to ensure the safety of the atomization process. Secondly, a feedforward compensation algorithm is used to pre-adjust the oscillation frequency of the ultrasonic atomizer based on the difference between the condensate temperature and the optimal atomization temperature range. For example, if the optimal atomization temperature range is 15-25℃, and the current condensate temperature is 10℃, the temperature difference is -5℃. The target frequency compensation value is calculated according to the feedforward compensation algorithm formula, and the oscillation frequency is adjusted. Simultaneously, through phase feedback control, the deviation between the actual oscillation frequency and the expected frequency of the atomizer is detected in real time, and the oscillation frequency is further fine-tuned to ensure the atomization effect. Using a fuzzy PID control algorithm, the proportional, integral, and derivative gain coefficients are dynamically adjusted based on the deviation between the indoor relative humidity and the preset target humidity, as well as their changing trends, to calculate the target atomization rate setpoint. Finally, a multi-objective optimization control algorithm is employed, comprehensively considering factors such as humidity adjustment speed, working efficiency, and system energy consumption, to generate the final drive signal for the ultrasonic atomizer, adjusting the atomization rate of the condensate. Throughout the process, characteristic parameters such as the atomizer's operating current, voltage, and vibration frequency are monitored in real time. A state observer is used to evaluate its operating status. When a performance degradation trend or abnormal operating condition is detected, a degraded operating mode is automatically triggered, such as reducing the atomization rate or power input, or a preventative maintenance alarm is issued to remind the user to perform timely maintenance.

[0053] For example, during operation, the ultrasonic atomizer of an air conditioner detected a condensate conductivity of 80 μS / cm after treatment, close to the set safety limit of 100 μS / cm. Based on the atomizer's safe operating range, the system automatically reduced the maximum permissible atomization rate from 0.5 liters / hour to 0.3 liters / hour. At this time, the condensate temperature was 12℃, below the lower limit of the optimal atomization temperature range of 15-25℃. Using a feedforward compensation algorithm, the target frequency compensation value was calculated, adjusting the ultrasonic atomizer's oscillation frequency from the fundamental frequency of 2.0MHz to 2.1MHz. Simultaneously, through phase feedback control, a deviation of 0.02MHz between the actual oscillation frequency and the expected frequency was detected, further fine-tuning the oscillation frequency to 2.08MHz to ensure atomization effect. The indoor humidity sensor displayed a current humidity of 40%, lower than the preset target humidity of 50%, with a deviation of -10%, and the deviation trend showed a gradual increase. Using a fuzzy PID control algorithm, the proportional gain, integral gain, and derivative gain coefficients are dynamically adjusted based on the magnitude and trend of the deviation, resulting in a target atomization rate setpoint of 0.4 liters / hour. A multi-objective optimization control algorithm is then employed to generate the final drive signal, adjusting the atomizer's atomization rate to 0.4 liters / hour, considering humidity adjustment speed, operating efficiency, and system energy consumption. During this process, a slight increase in the atomizer's operating current and minor fluctuations in vibration frequency were observed in real-time, and the state observer indicated a performance degradation trend. The system automatically triggers a degraded operation mode, reducing the atomization rate to 0.35 liters / hour, and simultaneously issues a preventative maintenance alarm, reminding the user to perform atomizer maintenance, such as cleaning the atomizing plate and checking circuit connections.

[0054] Preferably, the feedforward compensation algorithm satisfies the following relation: ; ; in, This represents the target frequency after feedforward compensation. This indicates the fundamental oscillation frequency of the ultrasonic atomizer. Represents the proportional gain coefficient. Indicates the real-time temperature of condensate. Median of optimal atomization temperature The difference, Represents the integral gain coefficient. This represents the actual driving frequency after phase feedback correction. Indicates the feedback gain coefficient. Indicates the measured oscillation frequency. This indicates the expected oscillation frequency.

[0055] The fundamental oscillation frequency refers to the initial oscillation frequency of the atomizer under normal operating conditions, typically determined based on the atomizer's physical characteristics and design parameters. The proportional gain coefficient and integral gain coefficient are two key parameters in the feedforward compensation algorithm, used to adjust the compensation amount of the oscillation frequency to adapt to changes in condensate temperature. The difference between the real-time condensate temperature and the median of the optimal atomization temperature reflects the deviation between the current condensate temperature and the ideal atomization temperature, serving as the basis for adjusting the oscillation frequency. Phase feedback control is a control method that further refines the oscillation frequency by detecting the deviation between the actual oscillation frequency and the expected frequency. The feedback gain coefficient is used to adjust the strength of the phase feedback control, ensuring the accurate and stable oscillation frequency. The measured oscillation frequency refers to the oscillation frequency of the atomizer during actual operation, while the expected oscillation frequency is the target frequency calculated using the feedforward compensation algorithm.

[0056] Specifically, the oscillation frequency of the ultrasonic atomizer is rapidly adjusted based on changes in the condensate temperature to ensure it remains in optimal operating condition, thereby improving atomization efficiency and quality. By calculating the difference between the real-time condensate temperature and the median of the optimal atomization temperature, the base oscillation frequency is compensated using proportional and integral gain coefficients to obtain the feedforward compensated target frequency. Then, combined with phase feedback control, the oscillation frequency is further adjusted based on the deviation between the measured and expected frequencies to ensure that the actual oscillation frequency of the atomizer matches the expected frequency, achieving precise frequency control.

[0057] For example, the fundamental oscillation frequency of a certain ultrasonic atomizer is 2.0MHz, and the median optimal atomization temperature is 20℃. In actual operation, the real-time condensate temperature was monitored to be 15℃, which is the difference from the median optimal atomization temperature. Set the temperature to -5℃. Set the proportional gain coefficient. The integral gain coefficient is 0.02MHz / ℃. The value is 0.001MHz / (℃·s). Based on the feedforward compensation algorithm formula, the target frequency after feedforward compensation is calculated. =2.0MHz+0.02MHz / ℃×(-5℃)+0.001MHz / (℃·s)× dt. Assume the cumulative value of the integral term over a period of time is 0.05MHz, therefore =2.0MHz - 0.1MHz + 0.05MHz = 1.95MHz. At this point, the measured oscillation frequency is... The expected oscillation frequency is 1.94MHz. The frequency is 1.95MHz, with a frequency deviation of 0.01MHz. Set the feedback gain coefficient. The value is 0.5. Based on the phase feedback control formula, the actual driving frequency after phase feedback correction is obtained. =1.95MHz + 0.5 × (1.94MHz - 1.95MHz) = 1.95MHz - 0.005MHz = 1.945MHz. (This is the actual driving frequency.) When applied to atomizers, the oscillation frequency is adjusted to 1.945MHz, enabling rapid response to changes in condensate temperature and precise control of the atomization process.

[0058] Preferably, the fuzzy PID control algorithm satisfies the following relationship: ; ; ; This represents the output of the fuzzy PID controller. Indicates the preset target humidity Compared with the current humidity level The real-time difference Indicates the rate of change of deviation. This represents the actual proportional gain after fuzzy rule adjustment. This represents the actual integral gain after fuzzy rule adjustment. This represents the actual differential gain after fuzzy rule adjustment. This represents the initial scaling factor. Represents the initial integral coefficients. Represents the initial differential coefficients. This indicates the proportional gain correction amount. This represents the integral gain correction amount. This represents the differential gain correction amount. Indicates the target atomization rate, This indicates the output normalization coefficient. This represents the minimum rate guarantee coefficient. This indicates the minimum permissible atomization rate.

[0059] It should be noted that fuzzy PID control is an advanced control algorithm that combines fuzzy logic with traditional PID control. Fuzzy rules refer to a series of fuzzy conditional statements formulated based on expert experience and system characteristics, used to adjust the proportional, integral, and derivative gain coefficients of the PID controller. The initial proportional, integral, and derivative coefficients are the basic parameters of the PID controller before fuzzy adjustment, usually set based on initial system identification or experience. The proportional gain correction, integral gain correction, and derivative gain correction are adjustments made to the initial gain coefficients according to the fuzzy rules, used to dynamically optimize control performance. The output normalization coefficient and minimum rate guarantee coefficient are parameters used to convert the fuzzy PID output into the target atomization rate, ensuring that the output is within a reasonable range and meets the minimum atomization rate requirement. The minimum allowable atomization rate is the lower limit of the atomization rate set by the system, ensuring that the atomizer can maintain basic operation under low demand and avoiding frequent start-stop cycles.

[0060] For example, an air conditioner has a preset target humidity of 50%, a current detected humidity of 40%, a real-time difference e(t) of -10%, and a deviation change rate of -2% / min. Initial proportionality coefficient. The initial integral coefficient is 0.8. The initial differential coefficient is 0.2. The value is 0.5. According to the fuzzy rule, when the humidity deviation is -10% and the deviation change rate is -2% / min, the proportional gain correction is... The integral gain correction is +0.2. The differential gain correction is +0.1. It is +0.3. Therefore, the actual proportional gain is... =0.8 + 0.2 = 1.0, actual integral gain =0.2 + 0.1 = 0.3, actual differential gain =0.5 + 0.3 = 0.8. Based on the fuzzy PID control algorithm formula, the fuzzy PID output u(t) is calculated as: u(t) = 1.0 × (-10%) + 0.3 × dt + 0.8 × (-2% / min). Assuming the cumulative value of the integral term over a period of time is -5%, then... =-10%-5%-1.6%=-16.6%. Set the output normalization coefficient. The minimum rate guarantee factor is 0.05 liters / hour / %. The minimum allowable atomization rate is 0.2. The target atomization rate is 0.1 liters per hour. =0.05 liters / hour / % × (-16.6%) + 0.2 × 0.1 liters / hour = -0.83 liters / hour + 0.02 liters / hour = -0.81 liters / hour. Because Below the minimum permissible atomization rate The target atomization rate is set to 0.1 liters / hour, and the atomizer is started for humidification. As the indoor humidity gradually increases and the humidity deviation decreases, the fuzzy PID control algorithm will dynamically adjust the control parameters to reduce the atomization rate and stabilize the indoor humidity near the target value.

[0061] Preferably, the indoor unit of the air conditioner is equipped with at least two distributed atomizing units at different heights; In step S4, the release method (such as...) Figure 4 (As shown) includes: When in normal release mode, the start and stop sequence of condensate release is coupled with the operating cycle of the air conditioning compressor. Release begins after the first preset delay after the compressor starts and stops after the second preset delay before the compressor stops. During the release, the air conditioning air guide vane is controlled to swing horizontally. When vertical temperature stratification exists indoors, the vertical uniform release mode is activated: The distributed atomizing unit is divided into upper and lower parts. By controlling the distributed atomizing unit, a time-sharing alternating working strategy is adopted: the atomizing unit located at the upper part of the device is activated first and releases water mist upward. After a certain interval, the atomizing unit located at the lower part of the device is activated and releases water mist horizontally or slightly downward. Through the alternation and coordination of the release time of the upper and lower units, the vertical humidity gradient caused by the rising hot air is weakened. When a change in the distribution of people indoors is detected, the directional follow-up release mode is activated: the release axis of the distributed atomizing unit is controlled to face the center of the densely populated area, and the release direction is adjusted with a preset lead amount according to the movement trend of people indoors to track and humidify the target area. For areas where no one is present, the release ports in the corresponding directions are closed or their duty cycles are reduced.

[0062] It should be noted that a distributed atomizing unit refers to multiple atomizing devices installed at different heights on the indoor unit of an air conditioner, capable of releasing atomized mist in designated areas according to indoor environmental needs. The conventional release mode refers to the atomizing unit releasing mist according to a start-stop sequence that matches the operating cycle of the air conditioner compressor (e.g., ...). Figure 3As shown, uniform humidity distribution is achieved by controlling the swing direction of the air guide plate. The vertical uniform release mode refers to the alternating operation of the upper and lower atomizing units when there is vertical temperature stratification indoors, weakening the vertical humidity gradient caused by rising hot air and making the indoor humidity distribution more uniform. The directional following release mode refers to controlling the release direction of the atomizing units towards areas with high occupancy based on changes in the distribution of people indoors, and adjusting in real time to improve the targeted and comfortable humidification effect. Release control in unoccupied areas refers to restricting atomization release in unoccupied areas, closing or reducing the duty cycle of the release vents to avoid resource waste.

[0063] Understandably, the conventional release mode, by coupling with the operating cycle of the air conditioner compressor, ensures that the atomization release and the air conditioner's cooling / heating process are coordinated, improving energy efficiency, while simultaneously achieving uniform humidity distribution through the oscillation of the air guide vanes. Vertical uniform release mode (such as...) Figure 5 (As shown) To address the issue of vertical temperature stratification indoors, the system utilizes alternating release from upper and lower atomizing units to break up the humidity gradient formed by rising hot air, resulting in a more uniform vertical distribution of indoor humidity. Directional follow-up release mode (e.g.) Figure 6 As shown, the system adjusts the direction of atomization release in real time according to changes in the area of ​​human activity, concentrating the water mist to densely populated areas to improve local comfort and reduce energy waste. Further optimization of resource allocation through release control in unoccupied areas avoids unnecessary atomization operations, thus improving the overall energy efficiency of the air conditioning system.

[0064] For example, an indoor air conditioner unit is equipped with two distributed atomizing units, one above the other. In normal release mode, the upper and lower atomizing units simultaneously begin releasing water mist one minute after the compressor starts; the atomizing units stop releasing water mist three minutes before the compressor stops. The air conditioner's air guide vane maintains a horizontal oscillation, allowing the water mist to diffuse evenly throughout the room. At this time, the indoor temperature sensor detects a vertical temperature stratification, with the upper temperature at 26°C and the lower temperature at 24°C, a temperature difference exceeding a set threshold of 2°C. The system then activates a vertical uniform release mode, prioritizing the upper atomizing unit to release water mist upwards, followed by the lower atomizing unit releasing water mist horizontally after a two-minute interval. This alternating release by the upper and lower units breaks down the vertical humidity gradient, ensuring a uniform vertical distribution of indoor humidity. Simultaneously, the indoor occupant distribution sensor detects that occupants are concentrated in the center of the living room, activating a directional follow-up release mode. The release axes of the upper and lower atomizing units are controlled to face the center of the living room, and the release direction is adjusted one minute in advance based on occupant movement trends to track and humidify the target area. For unoccupied areas such as bedrooms, the corresponding release vents are closed to reduce energy waste. After a period of operation, the indoor humidity is evenly distributed between 45% and 55%, the humidity comfort in the activity area is significantly improved, and the system energy efficiency is also improved.

[0065] Preferably, step S5 includes: Start the air conditioning system parameter adjustment sequence with higher priority, lower the cooling temperature setpoint to increase dehumidification, increase the fan speed on the evaporator side in stages until the highest level to increase air circulation, maintain the state for a predetermined time window and observe the change in condensate generation rate. When the outdoor air humidity is higher than the current indoor humidity, and the temperature difference is within the allowable range, the fresh air damper is briefly opened to introduce some outdoor humid air, which is then cooled by the evaporator, thus increasing the amount of recyclable condensate.

[0066] It should be noted that the air conditioning system parameter adjustment sequence refers to the operational process of adjusting the operating parameters of the air conditioning system according to a certain priority and order, aiming to increase the amount of condensate generated to meet indoor humidity control requirements. The cooling temperature setpoint refers to the target cooling temperature set by the user. Lowering this value increases the temperature difference between the evaporator surface and the air, improving the condensation efficiency of water vapor. The evaporator-side fan speed refers to the rotation speed of the fan in the indoor unit responsible for blowing air towards the evaporator. Increasing the fan speed increases airflow, allowing more water vapor to contact the evaporator surface, thereby increasing condensate generation. The predetermined time window is a fixed duration set to observe changes in the condensate generation rate, usually determined based on system response characteristics and experience. The fresh air damper is the valve in the indoor unit used to introduce outdoor air; controlling the opening of the fresh air damper regulates the exchange of indoor and outdoor air. Outdoor air humidity refers to the humidity of the outdoor environment. When it is higher than the current indoor humidity, introducing humid outdoor air helps increase condensate generation.

[0067] Understandably, the purpose of step S5 is to increase the amount of condensate generated by adjusting the air conditioning system parameters when condensate is distributed to the external drainage path and indoor humidity still needs further adjustment, thereby meeting the indoor humidity control requirements. Lowering the cooling temperature setpoint increases the temperature difference between the evaporator surface and the air, making it easier for water vapor in the air to condense into condensate, thus increasing dehumidification. Periodically increasing the fan speed on the evaporator side increases airflow, allowing more water vapor-containing air to contact the evaporator surface, further increasing the condensate generation rate. Maintaining operation for a predetermined time window allows observation of the system's response to parameter adjustments, assessing changes in condensate generation, and determining whether further parameter adjustments are needed. When the outdoor air humidity is higher than the current indoor humidity and the temperature difference allows, the fresh air damper is briefly opened to introduce some humid outdoor air. After being cooled by the evaporator, this additional condensate generates more recyclable condensate, providing more resources for indoor humidity control.

[0068] For example, during operation, an air conditioner detects that condensate is being distributed to the external exhaust path, and that the indoor humidity still needs further reduction. In system startup step S5, the cooling temperature setpoint is first lowered from 26°C to 24°C to increase the temperature difference between the evaporator surface and the air. Simultaneously, the fan speed on the evaporator side is increased from the initial setting 1 to setting 2, and maintained for 10 minutes, observing that the condensate generation rate increases from 50 ml / hour to 70 ml / hour. The fan speed is then increased again to setting 3, and maintained for 10 minutes, further increasing the condensate generation rate to 90 ml / hour. At this point, the outdoor air humidity is detected to be 70%, higher than the current indoor humidity of 50%, and the outdoor temperature is 28°C, with a temperature difference of 4°C between the outdoor and indoor temperatures of 24°C, meeting the allowable temperature difference conditions. The air conditioning system briefly opens the fresh air damper for 2 minutes, introducing some humid outdoor air. After being cooled by the evaporator, the introduced air generates approximately 30 ml of additional condensate, bringing the total condensate generation to 120 ml / hour, meeting the indoor humidity regulation requirements. After a period of operation, the indoor humidity gradually decreases to the target value. The system automatically adjusts the parameter adjustment sequence and the opening time of the fresh air door according to the humidity change to maintain the stability of the indoor humidity.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for controlling the atomization of air conditioning condensate recovery, characterized in that, The air conditioning condensate recovery and atomization control method includes the following steps: S1: Based on the condensate generation characteristics of the air conditioning system and the indoor humidity control requirements, the condensate treatment process is divided into the condensate recovery stage, the water quality treatment stage, the atomization decision stage, and the air conditioning regulation stage. S2: Based on the requirements of the condensate recovery stage, detect the total amount of condensate produced by the evaporator, filter and sterilize the condensate, and monitor the purity parameters of the treated water. S3: Based on the output results of the water treatment stage and the real-time indoor relative humidity, the atomization decision stage is executed, including distributing condensate to the atomization or drainage path; S4: When the condensate is distributed to the atomization path, based on the water purity parameters, condensate temperature, and the deviation between the indoor relative humidity and the preset target humidity, the condensate is converted into adjustable water mist by the ultrasonic atomizer and released into the indoor environment. S5: When the condensate is distributed to the external drainage path, the air conditioning cooling parameters are adjusted according to the user's required temperature and outdoor humidity parameters, based on the conflict state that the total amount of condensate is lower than the atomization safety threshold but the indoor relative humidity is lower than the preset target humidity. S6: Based on the output feedback of the atomization decision stage and the air conditioning adjustment stage, update the total condensate detection value, water purity parameters and indoor relative humidity in real time; Step S5 includes: Start the air conditioning system parameter adjustment sequence with higher priority, lower the cooling temperature setpoint to increase dehumidification, increase the fan speed on the evaporator side in stages until the highest level to increase air circulation, maintain the state for a predetermined time window and observe the change in condensate generation rate. When the outdoor air humidity is higher than the current indoor humidity, and the temperature difference is within the allowable range, the fresh air damper is briefly opened to introduce some outdoor humid air, which is then cooled by the evaporator, thus increasing the amount of recyclable condensate.

2. The air conditioning condensate recovery atomization control method according to claim 1, characterized in that, In step S1, the condensate generation characteristics include the air conditioning cooling temperature setpoint, evaporator surface temperature, indoor and outdoor air humidity difference, indoor ambient temperature, air conditioning outlet air speed, and continuous air conditioning operation duration. The cooling temperature setting is negatively correlated with the evaporator surface temperature. When it is necessary to improve the water vapor condensation efficiency, the cooling temperature setting is lowered, thereby reducing the evaporator surface temperature and increasing the temperature difference between the evaporator and the air flowing through it.

3. The air conditioning condensate recovery atomization control method according to claim 1, characterized in that, In step S2, the filtration and sterilization process includes passing condensate through a microporous filter to remove suspended particulate matter, and then guiding the water flow through an activated carbon adsorption layer to remove dissolved organic matter and odor components. Finally, ultraviolet radiation was used to disinfect the water flow. The intensity of ultraviolet radiation was adjusted according to the water flow rate and water quality monitoring results. At the same time, the transmittance, conductivity and microbial indicators of the treated water were monitored as parameters for evaluating water purity.

4. The air conditioning condensate recovery atomization control method according to claim 1, characterized in that, The priority of distributing condensate to the atomization path follows the principle of water quality safety first, humidity comfort second, and water resource utilization third. In step S3, it is included to determine whether the water purity parameter meets the atomization water standard: if it does not meet the standard, the condensate is allocated to the external discharge path; if the water quality meets the standard, the deviation range between the real-time indoor relative humidity and the preset target humidity is further determined. When the indoor relative humidity is detected to be lower than the first humidity threshold, the condensate availability assessment stage is entered: if the current total condensate volume is higher than the atomization safety threshold and the predicted condensate generation in the next cycle can maintain the continuous atomization demand, then the condensate will be allocated to the atomization path. If the indoor relative humidity is between the first and second humidity thresholds, it enters standby mode and maintains the current allocation path. If the indoor relative humidity is higher than the second humidity threshold, the condensate will be allocated to the external drainage path regardless of the water quality and quantity.

5. The air conditioning condensate recovery atomization control method according to claim 1, characterized in that, Step S4 includes: A safe operating threshold range for the atomizer is established based on water purity parameters. When the water quality parameters are detected to be close to the critical value, the maximum allowable atomization rate is reduced. Based on the difference between the condensate temperature and the optimal atomization temperature range, a feedforward compensation algorithm is used to adjust the oscillation frequency of the ultrasonic atomizer, while phase feedback is used to control the oscillation frequency of the ultrasonic atomizer. Based on the magnitude and trend of the deviation between the indoor relative humidity and the preset target humidity, the target atomization rate setpoint is calculated using a fuzzy PID control algorithm. Based on the target atomization rate setting, a multi-objective optimization control algorithm is used to generate the final drive signal of the ultrasonic atomizer and adjust the atomization rate of the condensate. By monitoring the operating current, voltage, and vibration frequency characteristics of the ultrasonic atomizer in real time, a fault prediction and health management process based on a condition observer is established. When a performance degradation trend or abnormal operating state is detected, a degraded operation mode or preventive maintenance procedure is automatically triggered.

6. The air conditioning condensate recovery atomization control method according to claim 5, characterized in that, The feedforward compensation algorithm satisfies the following relationship: ； ； in, This represents the target frequency after feedforward compensation. This indicates the fundamental oscillation frequency of the ultrasonic atomizer. Represents the proportional gain coefficient. Indicates the real-time temperature of condensate. Median of optimal atomization temperature The difference, Represents the integral gain coefficient. This represents the actual driving frequency after phase feedback correction. Indicates the feedback gain coefficient. Indicates the measured oscillation frequency. This indicates the expected oscillation frequency.

7. The air conditioning condensate recovery atomization control method according to claim 1, characterized in that, The fuzzy PID control algorithm satisfies the following relationship: ； ； ； This represents the output of the fuzzy PID controller. Indicates the preset target humidity Compared with the current humidity level The real-time difference Indicates the rate of change of deviation. This represents the actual proportional gain after fuzzy rule adjustment. This represents the actual integral gain after fuzzy rule adjustment. This represents the actual differential gain after fuzzy rule adjustment. This represents the initial scaling factor. Represents the initial integral coefficients. Represents the initial differential coefficients. This indicates the proportional gain correction amount. This represents the integral gain correction amount. This represents the differential gain correction amount. Indicates the target atomization rate, This indicates the output normalization coefficient. This represents the minimum rate guarantee coefficient. This indicates the minimum permissible atomization rate.

8. The air conditioning condensate recovery atomization control method according to claim 1, characterized in that, The indoor unit of the air conditioner is equipped with at least two distributed atomizing units at different heights; In step S4, the release method includes: When in normal release mode, the start and stop sequence of condensate release is coupled with the operating cycle of the air conditioning compressor. Release begins after the first preset delay after the compressor starts and stops after the second preset delay before the compressor stops. During the release, the air conditioning air guide vane is controlled to swing horizontally. When vertical temperature stratification exists indoors, the vertical uniform release mode is activated: The distributed atomizing unit is divided into upper and lower parts. By controlling the distributed atomizing unit, a time-sharing alternating working strategy is adopted: the atomizing unit located at the upper part of the device is activated first and releases water mist upward. After a certain interval, the atomizing unit located at the lower part of the device is activated and releases water mist horizontally or slightly downward. Through the alternation and coordination of the release time of the upper and lower units, the vertical humidity gradient caused by the rising hot air is weakened. When a change in the distribution of people indoors is detected, the directional follow-up release mode is activated: the release axis of the distributed atomizing unit is controlled to face the center of the densely populated area, and the release direction is adjusted with a preset lead amount according to the movement trend of people indoors to track and humidify the target area. For areas where no one is present, the release ports in the corresponding directions are closed or their duty cycles are reduced.

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