A method and device for controlling the air volume of a portable air-water extractor

Abstract

This invention relates to the field of air-to-water technology, and more particularly to a method and device for controlling the airflow of a portable air-to-water dispenser. The airflow control method for this portable air-to-water dispenser aims to solve the problems of large space occupation and high cost when the condenser is arranged separately in current compression condensing systems, and low energy efficiency when arranged in parallel. This application arranges the evaporator and condenser sequentially in the airflow direction, saving space. It uses a stepless speed-regulating fan to adjust the matching airflow in real time based on feedback signals. A perforated plate and an adjustable damper are designed and installed on the same plane as the evaporator's air inlet to separate the airflow passing through and not passing through the evaporator. This solves the problem of the inability to separately control the airflow passing through the evaporator and condenser with a single fan while saving space.

Description

Technical Field

[0001] This invention relates to the field of air-water extraction technology, and in particular to a method and device for controlling the airflow of a portable air-water extractor. Background Technology

[0002] Research on air-to-water technology has become a hot topic in the field of water conservation and purification. In recent years, researchers have achieved breakthroughs in new materials, technologies, and devices. Different water extraction methods have different processes and focuses, but almost all of them involve a condensation process. Condensation involves guiding treated air to a low-temperature surface below the dew point temperature, cooling it down, and condensing it to ultimately obtain liquid water. Common cooling methods in this field include natural cold source refrigeration, semiconductor refrigeration, compression refrigeration, absorption refrigeration, and acousto-optical-magnetic refrigeration. Among these, compression refrigeration is the most common, stable, reliable, and efficient.

[0003] Mechanical compression refrigeration (compression refrigeration) uses air to extract water, similar to the working principle of a dehumidifier. The refrigerant evaporates and cools in the evaporator through throttling and depressurization, and condensation occurs when air passes through the evaporator, which is below its dew point temperature. Mechanical compression refrigeration is highly susceptible to air humidity. When humidity changes, the evaporation temperature remains constant, sometimes exceeding the dew point temperature, preventing condensation. Alternatively, the evaporation temperature can be set very low to induce condensation, but in high humidity, a large temperature difference between the evaporation and dew points reduces efficiency compared to evaporation temperatures slightly below the dew point. Therefore, air-to-water refrigeration only achieves optimal extraction under specific environmental conditions (dew point at a specific humidity / temperature), limiting its application across regions and all weather conditions. Furthermore, the reduced extraction efficiency coupled with continuous energy consumption is detrimental to energy conservation and environmental protection.

[0004] In compression refrigeration, there are two common arrangements for evaporators and condensers. One is a separate arrangement with a dedicated fan. The evaporator side cools the incoming air and condenses it, while the condenser side utilizes ambient temperature for cooling. The advantage of this arrangement is that the airflow can be controlled independently, fully utilizing the heat exchange capacity of both heat exchangers and improving the overall COP of the system. The disadvantages are a large space occupation, large equipment size and weight, the need for two fans, and slightly higher costs. The other arrangement is a parallel arrangement, where the incoming air flows sequentially through the evaporator and condenser, with a single fan installed at the outlet for exhaust. The advantages of this arrangement are space saving, small size and light weight, requiring only one fan, and lower cost. The disadvantage is that the airflow of the two heat exchangers cannot be adjusted independently. Under most operating conditions, the theoretically required airflow of the two heat exchangers differs significantly, failing to fully utilize their heat exchange capacity and resulting in lower energy efficiency. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a method and device for controlling the air volume of a portable air-water extractor, which solves the problems of space-consuming and costly separate heat exchangers in existing compression refrigeration condensing systems, and low energy efficiency when arranged in parallel.

[0006] The following is a summary of this disclosure to provide a basic understanding of some aspects. This summary is not intended to identify key or important elements, nor is it intended to limit the implementation or any aspects of the claims. Furthermore, this summary provides a simplified overview of some aspects that can be described in more detail in other parts of this disclosure.

[0007] The present invention solves the above-mentioned technical problems through the following technical means:

[0008] In a first aspect, embodiments of this application provide a method for controlling the airflow of a portable air-to-water dispenser. This method is applied to a portable air-to-water dispenser, which includes a housing and a refrigeration cycle system. The interior of the housing is an air duct for airflow. The refrigeration cycle system includes an evaporator, a compressor, a condenser, and an expansion valve connected sequentially to form a closed loop. A fan is installed at the corresponding position of the condenser in the housing. The evaporator, condenser, and fan are installed within the air duct and arranged sequentially along the airflow direction. A perforated plate is provided on the top of the evaporator. The cross-section formed by the perforated plate and the evaporator has the same cross-sectional dimensions as the condenser. A rotatable damper plate is provided inside the housing at the position of the perforated plate. Rotating the damper plate controls the airflow through the perforated plate.

[0009] The airflow control method includes controlling the airflow through the evaporator, and the steps are as follows:

[0010] Obtain the current ambient temperature and relative humidity, and calculate the current ambient dew point temperature;

[0011] Obtain the low-pressure side pressure of the current refrigeration cycle system and calculate the current evaporation temperature;

[0012] Calculate the difference between the dew point temperature and the evaporation temperature, set a threshold range for the difference, and compare the difference with the threshold range.

[0013] Based on the comparison between the difference and the difference threshold range, the rotation of the damper plate is controlled to adjust the airflow through the perforated plate.

[0014] In conjunction with the first aspect, in some embodiments, the step of controlling the rotation of the damper plate to adjust the airflow through the perforated plate based on the comparison result of the difference and the difference threshold range includes:

[0015] If the difference is less than the minimum value in the difference threshold range, the air valve plate is rotated to increase the airflow through the perforated plate and decrease the airflow through the evaporator.

[0016] If the difference is greater than or equal to the minimum value of the difference threshold range, and the difference is less than or equal to the maximum value of the difference threshold, then the damper plate maintains its current angle.

[0017] If the difference is greater than the maximum value of the difference threshold range, the air valve plate is rotated to reduce the airflow through the perforated plate and increase the airflow through the evaporator.

[0018] In conjunction with the first aspect, in some embodiments, the sampling frequency of the ambient temperature and relative humidity, as well as the sampling frequency of the low-pressure side pressure of the refrigeration cycle system, are both 20 to 30 seconds.

[0019] In conjunction with the first aspect, in some embodiments, the rotation angle of the damper plate is 0 to 90°. When the damper plate is rotated to be completely in contact with the perforated plate, all the airflow passes through the evaporator. When the damper plate is rotated to be perpendicular to the perforated plate, the airflow through the perforated plate reaches its maximum.

[0020] In conjunction with the first aspect, in some embodiments, the difference threshold range is 5–10°C.

[0021] In conjunction with the first aspect, in some embodiments, the airflow control method further includes airflow control through the condenser, wherein the airflow control through the condenser includes the following steps:

[0022] Set the high-pressure side threshold range for the refrigeration cycle system;

[0023] Obtain the real-time high-pressure side pressure of the current refrigeration cycle system;

[0024] The real-time high-pressure side pressure is compared with the high-pressure side threshold range. If the high-pressure side pressure is less than the minimum value in the high-pressure side threshold range, the fan speed is reduced. If the high-pressure side pressure is greater than the maximum value in the high-pressure side threshold range, the fan speed is increased. If the high-pressure side pressure is greater than or equal to the minimum value in the high-pressure side threshold range and less than or equal to the maximum value in the high-pressure side threshold range, the fan speed is kept constant.

[0025] In conjunction with the first aspect, in some embodiments, the high-voltage side threshold range is 1.0 to 2.0 MPa.

[0026] In conjunction with the first aspect, in some embodiments, the housing is equipped with a water collection tray at the bottom of the evaporator.

[0027] Secondly, embodiments of this application provide a portable air-water dispenser airflow control device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the airflow control method as described in the first aspect.

[0028] Thirdly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the airflow control method as described in the first aspect.

[0029] Compared with existing technologies, the present invention has the following advantages:

[0030] (1) Full-condition self-adaptation, adaptable to complex environments. Through a dual closed-loop strategy of "high-pressure regulating fan speed + temperature difference regulating damper opening", the system can accurately adapt to various complex outdoor environments such as high temperature and low humidity, high humidity, and large day-night temperature difference. In high temperature environment, the system enhances heat dissipation by increasing fan speed to avoid system overload; in low humidity environment, the system reduces evaporation temperature by diverting air through the damper to ensure condensation effect; in high humidity environment, the system increases evaporation temperature by closing the damper, making full use of high humidity air to increase water production, solving the pain point of traditional equipment that suddenly drops water production and cannot operate in extreme environments. In variable environments such as high temperature and low humidity, and high humidity, the system dynamically matches evaporation temperature with environmental dew point to avoid sudden drop in water production or system shutdown due to environmental changes, adapting to the needs of portable equipment for outdoor, emergency and other scenarios.

[0031] (2) Optimal energy efficiency ratio, significantly reducing energy consumption. The optimal temperature difference range of 5-10℃ between the dew point temperature and the evaporation temperature is precisely locked to achieve a balance between "maximum water production" and "minimum energy consumption". Compared with traditional fixed speed fans, the fan is dynamically adjusted according to high pressure, and the energy consumption is reduced by more than 30% under low operating conditions. The air valve diversion adjustment avoids the ineffective energy consumption of the compressor caused by the evaporation temperature being too low, and the water production per unit power consumption is increased by 20%-40%, which significantly extends the single-use time of portable equipment.

[0032] (3) The system has strong stability and extends the service life of the equipment. The fan speed is dynamically matched with the high pressure, which not only ensures the heat dissipation requirements of the condenser under high temperature conditions and avoids the compressor from being damaged by high pressure, but also avoids the fan running idle under low conditions, reducing the wear frequency of core components such as the fan, compressor, and heat exchanger, and extending the overall service life of the equipment.

[0033] (4) High control precision and stable operation response. The fine adjustment strategy of 20-30s periodic detection + 10% opening step size is adopted, which not only ensures the timeliness of system response, but also avoids frequent reciprocating adjustment of air valves and fans, prevents system oscillation, and ensures operational stability.

[0034] (5) Compact structure, suitable for portable design. The device only adds a flow diversion structure of air valve and perforated plate to the existing air duct system. There is no need to add large sensors or complex actuators. The overall structure is compact, small in size and light in weight, which fully meets the design requirements of portable air water extractor of "small size, easy to carry and easy to deploy". It can be widely used in outdoor emergency water extraction, field operation, desert arid areas and other scenarios. Attached Figure Description

[0035] Figure 1 This is a flowchart of a portable air-water collector air volume control method according to the present invention;

[0036] Figure 2 This is a structural diagram of a portable air-to-water generator;

[0037] Figure 3 This is a schematic diagram illustrating the specific implementation process of a portable air-water collector air volume control method according to the present invention;

[0038] Among them, the casing is 310, the evaporator is 320, the condenser is 330, the fan is 340, the perforated plate is 350, the damper plate is 360, and the drip tray is 370. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] The terms "first" and "second," etc., used in the specification and claims herein are used to distinguish different objects, not to describe a specific order of objects. In the description of embodiments of this application, unless otherwise stated, "a plurality of" means two or more, for example, "a plurality of processing units" means two or more processing units, "a plurality of elements" means two or more elements, etc.

[0041] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0042] This application discloses a portable air-to-water generator airflow control method, aiming to solve the problems of large space occupation and high cost when the condenser is arranged separately in current compression condensing systems, and low energy efficiency when arranged in parallel. This application arranges the evaporator and condenser sequentially in the airflow direction, saving space. It employs a stepless speed-regulating fan, adjusting the matching airflow in real time based on feedback signals. A perforated plate and an adjustable damper are designed and installed on the same plane as the evaporator's air inlet to separate the airflow passing through and not passing through the evaporator. This solves the problem of not being able to separately control the airflow passing through the evaporator and condenser with a single fan while saving space.

[0043] Specifically, this application discloses a method for controlling the airflow of a portable air-to-water generator, applied to a portable air-to-water generator. Please refer to... Figure 2 The portable air-to-water generator includes a housing 310 and a refrigeration cycle system. The interior of the housing 310 is an air duct for airflow. The refrigeration cycle system includes an evaporator 320, a compressor, a condenser 330, and an expansion valve connected in sequence to form a closed loop. A fan 340 is installed in the housing 310 at the position corresponding to the condenser 330. The fan 340 is a stepless speed-regulating fan, which can automatically adjust its speed according to feedback signals to control the airflow volume in the air duct. An air outlet is opened at one end of the housing 310 at the position corresponding to the fan 340, that is, the fan 340 is installed at the airflow outlet end of the air duct. The evaporator 320, condenser 330, and fan 340 are installed in the air duct and arranged in sequence along the airflow direction. A perforated plate 350 is provided on the top of the evaporator 320. The cross-section formed by the perforated plate 350 and the evaporator 320 has the same cross-sectional dimensions as the condenser 330. The perforated plate 350 is made of aluminum alloy with an electroplated anti-corrosion coating and a porosity of over 70%, allowing airflow to easily penetrate. An air valve is also installed inside the housing 310 to control the airflow through the perforated plate 350. The air valve includes an actuator and an air valve plate 360. The air valve plate 360 ​​is rotatably mounted inside the housing 310 corresponding to the position of the perforated plate 350. The air valve plate 360 ​​is connected to the actuator, which controls the rotation of the air valve plate 360. Rotating the air valve plate 360 ​​controls the airflow through the perforated plate 350. The actuator can be a telescopic mechanism such as a cylinder, as long as it can control the rotation of the air valve plate 360.

[0044] Under the control of the actuator, the baffle can rotate from 0 to 90 degrees. When the baffle is completely parallel to and in contact with the perforated plate 350, the air supply cannot pass through the perforated plate 350 and passes entirely through the evaporator 320. At this time, the air valve opening is 0, and it is in a fully closed state. When the baffle is perpendicular to the perforated plate 350, the air supply can easily pass through the perforated plate 350. At this time, the air valve opening is 100%. With a fixed air volume, air valves with different openings can control the air volume passing through the perforated plate 350, that is, to split the air volume passing through the perforated plate 350 and the evaporator 320. One step of the air valve opening adjustment is 10% of the air valve opening.

[0045] To facilitate the rapid collection of condensate from the evaporator 320, a drip tray 370 is installed at the bottom of the evaporator 320. The drip tray 370 is preferably V-shaped to facilitate the collection of condensate.

[0046] When the portable air-water extractor is running, the ambient air is driven by the fan 340 and first passes through the cross section composed of the evaporator 320 and the perforated plate 350. The air is cooled and condensed on the evaporator 320 to form condensate and dry air. The dry air then passes through the condenser 330 to dissipate heat and is finally discharged into the environment.

[0047] Specifically, such as Figure 1 As shown, a portable air-water collector airflow control method of this application includes airflow control through the evaporator 320, and the steps are as follows:

[0048] Step S110: Obtain the current ambient temperature and relative humidity, and calculate the dew point temperature of the current environment;

[0049] Step S120: Obtain the low-pressure side pressure of the current refrigeration cycle system and calculate the current evaporation temperature;

[0050] Step S130: Calculate the difference between the dew point temperature and the evaporation temperature, set a threshold range for the difference, and compare the difference with the threshold range.

[0051] In step S140, based on the comparison result between the difference and the difference threshold range, the damper plate 360 ​​is controlled to rotate to adjust the airflow through the perforated plate 350. Specifically, if the difference is less than the minimum value in the difference threshold range, the damper plate 360 ​​is rotated to increase the airflow through the perforated plate 350 and decrease the airflow through the evaporator 320; if the difference is greater than or equal to the minimum value in the difference threshold range and less than or equal to the maximum value in the difference threshold range, the damper plate 360 ​​maintains its current angle; if the difference is greater than the maximum value in the difference threshold range, the damper plate 360 ​​is rotated to decrease the airflow through the perforated plate 350 and increase the airflow through the evaporator 320.

[0052] Furthermore, the airflow control method for a portable air-to-water dispenser of this application also includes airflow control through the condenser 330, the steps of which are as follows:

[0053] Step S210: Set the high-pressure side threshold range of the refrigeration cycle system;

[0054] Step S220: Obtain the real-time high-pressure side pressure of the current refrigeration cycle system;

[0055] In step S230, the real-time high-pressure side pressure is compared with the high-pressure side threshold range. If the high-pressure side pressure is less than the minimum value in the high-pressure side threshold range, the speed of the fan 340 is reduced. If the high-pressure side pressure is greater than the maximum value in the high-pressure side threshold range, the speed of the fan 340 is increased. If the high-pressure side pressure is greater than or equal to the minimum value in the high-pressure side threshold range and less than or equal to the maximum value in the high-pressure side threshold range, the speed of the fan 340 is kept constant.

[0056] The portable air-to-water generator airflow control method of this invention is based on the principle of vapor compression refrigeration and air dew point matching control. Through the flow diversion adjustment of the air valve and the perforated plate 350, the temperature of the evaporator 320 is dynamically adapted to the ambient dew point. Specifically, on the one hand, water vapor in the air will only condense into liquid water on the surface of the evaporator 320 when the temperature of the evaporator 320 is lower than the ambient dew point temperature, completing the core water-collecting action. On the other hand, driven by the fan 340, the ambient air first flows through the air inlet section formed by the evaporator 320 and the perforated plate 350. After being cooled and condensed by the evaporator 320, the airflow enters the condenser 330 for heat dissipation, and is finally discharged into the environment by the fan 340, forming a complete airflow cycle of "cooling-condensation-heat dissipation". Furthermore, the optimal temperature difference range of 5-10℃ between the dew point temperature and the evaporation temperature is precisely locked, achieving a balance between "maximizing water production" and "minimizing energy consumption". Compared with traditional fixed airflow control, the water production per unit power consumption is significantly improved, extending the battery life of the portable device.

[0057] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0058] Please refer to Figure 2 and Figure 3 :

[0059] In step S110, the ambient temperature and relative humidity are collected at a frequency of 20-30 seconds using temperature and humidity sensors placed in the environment. The current dew point temperature t is then calculated based on the collected ambient temperature and relative humidity. l .

[0060] In steps S120 and S220, the high-pressure side pressure P of the refrigeration cycle system is collected in real time by a pressure sensor arranged in the refrigeration cycle system. h and low-pressure side pressure P l High-pressure side pressure P h and low-pressure side pressure P l The data collection time and frequency are the same as the current ambient temperature and relative humidity.

[0061] The high-pressure side pressure in a refrigeration cycle system is the compressor outlet pressure, which reflects the system's heat dissipation capacity. A higher high-pressure side pressure indicates a hotter environment or poorer heat dissipation. The low-pressure side pressure in a refrigeration cycle system is the evaporator outlet pressure (320°C) or the compressor inlet pressure. The low-pressure side pressure directly reflects the evaporation temperature (t). s The lower the pressure on the low-pressure side, the lower the evaporation temperature, and the easier it is for water to condense; the higher the pressure on the low-pressure side, the higher the evaporation temperature, making it impossible to extract water.

[0062] Evaporation temperature t s There is a unique correlation between the refrigerant temperature and the surface temperature of evaporator 320. Due to the excellent thermal conductivity of the metal tube wall of evaporator 320, the refrigerant is in a saturated two-phase state within evaporator 320, and its evaporation temperature t... s The temperature is basically consistent with the surface temperature of evaporator 320, with a deviation of less than 2°C. Therefore, this invention detects the low-pressure side pressure P. l The evaporation temperature t is obtained by conversion. s This indirectly characterizes the surface temperature of the evaporator 320, enabling precise control of the condensation temperature of the evaporator 320.

[0063] In step S210, the high-pressure side threshold range of the refrigeration cycle system is set to 1.0 to 2.0 MPa. When the high-pressure side pressure exceeds 2.0 MPa, the environment is too hot and the condenser 330 cannot dissipate heat sufficiently, requiring the fan 340 to speed up, which increases energy consumption. When the high-pressure side pressure is less than 1.0 MPa, the heat dissipation is good and the load is small, so the fan 340 slows down to save electricity.

[0064] In step S230, the real-time high-pressure side pressure P is... h Compared with the high-pressure side threshold range of 1.0–2.0 MPa, if the high-pressure side pressure is less than the minimum value in the high-pressure side threshold range (i.e., P... h <1.0MPa) indicates that the heat dissipation requirement of condenser 330 has been met. At this point, the speed of fan 340 can be reduced to decrease its energy consumption while ensuring heat dissipation, thus meeting the battery life requirements of portable devices. If the high-pressure side pressure exceeds the maximum value within the high-pressure side threshold range (i.e., P...), hA pressure greater than 2.0 MPa indicates insufficient heat dissipation from condenser 330, posing a risk of overload to the refrigeration system. In this case, increasing the speed of fan 340 will improve the airflow to condenser 330, enhancing heat dissipation and preventing system shutdown due to excessively high pressure. If the high-pressure side pressure is greater than or equal to the minimum value within the high-pressure side threshold range, and less than or equal to the maximum value within the high-pressure side threshold range (i.e., 1.0 MPa ≤ P), then... h A pressure of ≤2.0MPa indicates that the system is operating stably, maintaining the current fan speed of 340 and avoiding unnecessary energy consumption.

[0065] The adjustment frequency of the fan 340 is consistent with the high-pressure side pressure acquisition frequency. The speed of the fan 340 is dynamically matched with the high-pressure side pressure, which not only ensures the heat dissipation requirements of the condenser 330 under high-temperature conditions and avoids the compressor being damaged due to high-pressure overheating, but also avoids the fan 340 running idle under low-temperature conditions, reducing the wear frequency of core components such as the fan 340, compressor, and condenser 330, and extending the overall service life of the equipment.

[0066] In step S130, the dew point temperature t is calculated and obtained. l and evaporation temperature t s The difference between them, i.e., the difference t=t l -t s Set the difference threshold range to 5-10℃, and compare the difference with the difference threshold range.

[0067] In setting the differential threshold range, the following considerations were taken into account: if the evaporation temperature is too high, approaching or even exceeding the dew point, condensation becomes difficult and the water production rate drops sharply; if the evaporation temperature is too low, the compressor power consumption increases dramatically, and the water production per unit power consumption decreases significantly, resulting in energy waste. Therefore, the differential threshold range was set at 5–10℃, which ensures stable condensation while minimizing compressor power consumption and achieving the lowest possible power consumption per unit of water.

[0068] In step S140, based on the comparison result between the difference and the difference threshold range, the air valve plate is controlled to rotate to adjust the airflow through the perforated plate 350.

[0069] When t < 5℃ is detected, that is, the difference between the dew point temperature and the evaporation temperature is too small, or even lower than the evaporation temperature, it means that the evaporation temperature needs to be reduced to ensure that it is below the dew point by a certain value. At this time, the opening of the air valve gradually increases, diverting more air into the perforated plate 350, reducing the amount of air entering the evaporator 320, thereby reducing the evaporation temperature. The system detects and adjusts the parameters every 30 seconds, and the stroke of the air valve each time it opens and closes is 10% of the maximum opening.

[0070] When t > 10℃ is detected, that is, the difference between the dew point temperature and the evaporation temperature is too large and much higher than the evaporation temperature, it indicates that the ambient dew point is high and the humidity is high, and the condensation potential is not fully utilized. The air volume can be increased to increase the water production. At this time, the air valve is gradually closed to divert more air into the evaporator 320 and reduce the air entering the perforated plate 350.

[0071] When the temperature is detected to be 5℃≤t≤10℃, it indicates that the load is in an ideal working state and the damper should maintain its current opening.

[0072] It should be noted that if the temperature requirement is not met after the air valve reaches its minimum or maximum opening, it will remain at either minimum or maximum opening. After completing one adjustment of the fan speed and air valve opening, the system waits for 20-30 seconds, preferably 30 seconds, before re-entering the data acquisition and calculation phase, forming a periodic closed-loop control. Through continuous detection, calculation, and adjustment, the system achieves dynamic adaptation to complex environments, ensuring that it always operates in a highly efficient and energy-saving state.

[0073] Another embodiment of the present invention provides a portable air-water dispenser airflow control device, comprising: a processor, a memory, and a computer program stored in the memory and executable on the processor, such as a portable air-water dispenser airflow control method program. When the processor executes the computer program, it implements the steps described in the various embodiments of the portable air-water dispenser airflow control method, for example... Figure 1 The steps.

[0074] For example, the above-mentioned computer program can be divided into one or more modules / units, which are stored in memory and executed by a processor to complete the present invention. The one or more modules / units can be a series of computer program instruction segments capable of performing specific functions. These instruction segments describe the execution process of the computer program in a portable air-water dispenser airflow control device. For example, the computer program can be divided into a first data acquisition module, a second data acquisition module, a calculation and comparison module, and a feedback adjustment module. The specific functions of each module are as follows:

[0075] The first data acquisition module is used to obtain the current ambient temperature and relative humidity, and calculate the current ambient dew point temperature.

[0076] The second data acquisition module is used to obtain the low-pressure side pressure of the current refrigeration cycle system and calculate the current evaporation temperature.

[0077] The calculation and comparison module is used to calculate the difference between the dew point temperature and the evaporation temperature, set a threshold range for the difference, and compare the difference with the threshold range.

[0078] The feedback adjustment module is used to control the rotation of the damper plate to adjust the airflow through the perforated plate 350 based on the comparison result between the difference and the difference threshold range.

[0079] The airflow control device for a portable air-to-water generator can be a computing device such as a desktop computer, laptop, PDA, or cloud server. This device may include, but is not limited to, processors and memory; for example, it may also include output devices, network access devices, and buses.

[0080] The processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the portable air-water dispenser's airflow control device, connecting various parts of the device via various interfaces and lines.

[0081] The memory can be used to store computer programs and / or modules. The processor implements various functions of the portable air-water dispenser airflow control device by running or executing the computer programs and / or modules stored in the memory, and by calling the data stored in the memory.

[0082] If the module / unit integrated into the portable air-water dispenser airflow control device is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various embodiments of the portable air-water dispenser airflow control method described above.

[0083] Computer programs include computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. Computer-readable media can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc.

[0084] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention. Technical aspects, shapes, and structures not described in detail in this invention are all well-known technologies.

Claims

1. A method for controlling the airflow of a portable air-to-water generator, characterized in that, The airflow control method is applied to a portable air-to-water dispenser, which includes a housing and a refrigeration cycle system. The interior of the housing is an air duct for airflow. The refrigeration cycle system includes an evaporator, a compressor, a condenser, and an expansion valve connected in sequence to form a closed loop. A fan is installed in the housing at the position corresponding to the condenser. The evaporator, condenser, and fan are installed in the air duct and arranged in sequence along the airflow direction. A perforated plate is provided on the top of the evaporator. The cross-section formed by the perforated plate and the evaporator has the same cross-sectional dimensions as the condenser. A rotatable damper plate is provided inside the housing at the position of the perforated plate. Rotating the damper plate controls the airflow through the perforated plate. The airflow control method includes controlling the airflow through the evaporator, and the steps are as follows: Obtain the current ambient temperature and relative humidity, and calculate the current ambient dew point temperature; Obtain the low-pressure side pressure of the current refrigeration cycle system and calculate the current evaporation temperature; Calculate the difference between the dew point temperature and the evaporation temperature, set a threshold range for the difference, and compare the difference with the threshold range. Based on the comparison between the difference and the difference threshold range, the rotation of the damper plate is controlled to adjust the airflow through the perforated plate.

2. The airflow control method for the portable air-water extractor according to claim 1, characterized in that, The step of controlling the rotation of the damper plate to adjust the airflow through the perforated plate based on the comparison result between the difference and the difference threshold range includes: If the difference is less than the minimum value in the difference threshold range, the air valve plate is rotated to increase the airflow through the perforated plate and decrease the airflow through the evaporator. If the difference is greater than or equal to the minimum value of the difference threshold range, and the difference is less than or equal to the maximum value of the difference threshold, then the damper plate maintains its current angle. If the difference is greater than the maximum value of the difference threshold range, the air valve plate is rotated to reduce the airflow through the perforated plate and increase the airflow through the evaporator.

3. The airflow control method for a portable air-to-water generator according to claim 1, characterized in that, The sampling frequency for ambient temperature and relative humidity, as well as the sampling frequency for the low-pressure side pressure of the refrigeration cycle system, are both 20–30 seconds.

4. The airflow control method for a portable air-water extractor according to claim 1, characterized in that, The rotation angle of the damper plate is 0 to 90°. When the damper plate is rotated to be completely in contact with the perforated plate, all the airflow passes through the evaporator. When the damper plate is rotated to be perpendicular to the perforated plate, the airflow through the perforated plate reaches its maximum.

5. The airflow control method for a portable air-to-water dispenser according to claim 1, characterized in that, The difference threshold range is 5–10℃.

6. The airflow control method for a portable air-to-water generator according to any one of claims 1-5, characterized in that, The airflow control method further includes airflow control through the condenser, which includes the following steps: Set the high-pressure side threshold range for the refrigeration cycle system; Obtain the real-time high-pressure side pressure of the current refrigeration cycle system; The real-time high-pressure side pressure is compared with the high-pressure side threshold range. If the high-pressure side pressure is less than the minimum value in the high-pressure side threshold range, the fan speed is reduced. If the high-pressure side pressure is greater than the maximum value in the high-pressure side threshold range, the fan speed is increased. If the high-pressure side pressure is greater than or equal to the minimum value in the high-pressure side threshold range and less than or equal to the maximum value in the high-pressure side threshold range, the fan speed is kept constant.

7. The airflow control method for a portable air-to-water generator according to claim 6, characterized in that, The high-voltage side threshold range is 1.0 to 2.0 MPa.

8. The airflow control method for a portable air-to-water dispenser according to claim 1, characterized in that, The casing has a water collection tray installed at the bottom of the evaporator.

9. A portable air-water extractor airflow control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the air volume control method as described in any one of claims 1-8.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the air volume control method as described in any one of claims 1-8.

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