Fog-free humidifying device, air conditioning system and control method thereof

Abstract

This invention provides a fog-free humidification device, an air conditioning system, and a control method thereof, relating to the field of air conditioning technology. The fog-free humidification device mainly includes an atomizing medium container, an ultrasonic atomizer, an air delivery device, a mist guide tube, a distributor, a liquid level detection device, and a control unit. The atomizing medium container is configured as a pressure-bearing sealed cavity. The atomizing medium container has an air inlet and a mist outlet. The ultrasonic atomizer is disposed within the atomizing medium container. The air delivery device is connected to the air inlet. One end of the mist guide tube is connected to the mist outlet. The distributor is connected to the other end of the mist guide tube and has multiple spaced-apart release ports, which are positioned within the airflow. The liquid level detection device is disposed within the atomizing medium container for detecting liquid level data. The control unit connects to and controls the ultrasonic atomizer, the air delivery device, and the liquid level detection device. The embodiments provided in this application output the humidifier to the target space in the form of no visible white fog via airflow.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a fog-free humidification device, an air conditioning system, and a control method thereof. Background Technology

[0002] Temperature and humidity controlled spaces, such as tea cabinets, wine cabinets, cigar cabinets, cigar rooms, archives, laboratories, and data centers, have strict and stable requirements for indoor relative humidity. For example, tea storage requires 65±5%RH, wine storage requires 60%-70%RH, and cigar storage requires 65%-72%RH. To meet these requirements, temperature and humidity control air conditioners are usually used in conjunction with humidifiers. While the air conditioner is cooling and distributing air, it also humidifies the air, maintaining a constant humidity level in the target space.

[0003] Currently, there are three main types of humidification solutions for constant temperature and humidity air conditioners:

[0004] The first method is wet membrane humidification, which relies on a water pump to draw water from a tank to the top of the wet membrane. The water flows down the surface of the wet membrane to form an evaporation surface, and a fan drives air through the wet membrane, causing the water to evaporate naturally and enter the airflow. To compensate for the insufficient natural evaporation capacity of the wet membrane, an electric heater is often required to heat the water and increase the evaporation rate. In this method, calcium and magnesium ions in the water are converted into insoluble carbonate scale during heating and repeated evaporation, which gradually accumulates on the surface of the wet membrane and the heating tube walls, blocking the evaporation channels and reducing evaporation efficiency. Scale falling into the pipes can also easily cause blockages and leaks. Scale buildup on the heating tube surface can lead to localized overheating, posing safety hazards such as dry burning, fire, and electrical leakage during long-term operation. At the same time, the wet membrane is constantly in a humid and high-temperature state, which easily breeds bacteria and mold, resulting in poor hygiene. In addition, the rated power of the electric heater is usually 1500W or higher, resulting in extremely high energy consumption. Furthermore, it requires electric heating to raise the temperature, and humidity adjustment has a minute-level response time, making rapid and precise adjustment difficult.

[0005] The second type is traditional ultrasonic humidification, which uses piezoelectric ceramic transducers to oscillate water at high frequencies, breaking it down into micron-sized water mist. It boasts advantages such as low energy consumption, rapid atomization, and high humidification efficiency. However, traditional ultrasonic humidifiers directly discharge water mist into the indoor space through the outlet. As minerals in the water diffuse with the mist, the water evaporates, leaving the minerals as a white powder residue indoors, creating white powder pollution that is detrimental to the health of precision equipment and personnel. Furthermore, when the mist droplets are large or diffuse unevenly, they easily condense on walls and furniture surfaces, causing dampness and directly damaging humidity-sensitive storage environments. In addition, relying on natural diffusion or direct blowing from a small fan results in poor humidification uniformity, easily leading to localized over-humidity or dryness.

[0006] The third type is steam humidification or high-pressure micro-mist humidification. Steam humidification uses electric heating or a steam source to directly vaporize water and send it into the air duct. It has a large humidification capacity but high energy consumption and complex equipment. High-pressure micro-mist humidification uses a high-pressure pump to pressurize water and then atomize it through nozzles. It has high cost, difficult maintenance, and unstable atomization effect. Summary of the Invention

[0007] This application addresses the shortcomings of existing methods by providing a fog-free humidification device, air conditioning system, and control method thereof, to solve the technical problems commonly found in existing humidification solutions, such as scaling and leakage or white fog causing dampness.

[0008] In one aspect, embodiments of this application provide a mist-free humidification device, which mainly includes an atomizing medium container, an ultrasonic atomizer, an air supply device, a mist guide tube, a distributor, a liquid level detection device, and a control unit; the atomizing medium container is configured as a pressure-bearing sealed cavity; the atomizing medium container has an air inlet and a mist outlet; the ultrasonic atomizer is disposed inside the atomizing medium container and is used to atomize the atomizing medium into atomized particles; the air supply device is connected to the air inlet and is used to continuously supply gas into the atomizing medium container to create a positive pressure inside, thereby driving the formed mist. The atomized particles are output outward through the mist outlet; one end of the mist guide tube is connected to the mist outlet; the distributor is connected to the other end of the mist guide tube, and the distributor has multiple spaced-apart release ports. The distributor is used to be placed in the airflow so that after the atomized particles are released through the multiple release ports, they are vaporized under the action of the airflow and output to the target space in the form of no visible white mist; a liquid level detection device is set in the atomizing medium container to detect liquid level data; the control unit is connected to and controls the ultrasonic atomizer, the air delivery device and the liquid level detection device.

[0009] As an optional implementation, the atomizing medium container includes a barrel, a cover, and a seal; the cover covers the opening of the barrel, and the seal is disposed between the barrel and the cover.

[0010] As an alternative implementation, the dispenser has a tube body, and the plurality of release ports are evenly distributed along the length of the tube body.

[0011] As an optional implementation, the release port is located on the side of the distributor opposite to the direction of the incoming airflow.

[0012] As an optional implementation, the release port of the dispenser is configured as a tapered hole structure with a larger inner diameter and a smaller outer diameter.

[0013] As an optional implementation, the upstream ends of both the mist guide pipe and the distributor are lower than their downstream ends along the direction of atomized particle conveying, so that the atomized medium formed by the condensation of atomized particles flows back to the atomized medium container along the slope, thereby realizing pipeline venting.

[0014] As an optional implementation, the dispenser has a tube body, the inner surface of the upper inner wall of the tube body is provided with a hydrophobic coating, and the inner surface of the lower inner wall is provided with a hydrophilic coating.

[0015] As an optional implementation, the dispenser has a tube body, which includes an inner tube and an outer tube that are sleeved together. The inner tube can slide relative to the outer tube along its own axial direction. Both the inner tube and the outer tube have release ports on their walls. A sealing ring is provided between the inner tube and the outer tube to prevent atomized particles from leaking from the sleeve joint.

[0016] Secondly, this application provides an air conditioning system, which mainly includes an environmental data sensor, an airflow generating device, and a fog-free humidifier as described in any of the foregoing embodiments; the environmental data sensor is disposed in the target space to acquire environmental parameters, the environmental parameters including at least humidity data; the airflow generating device has an airflow output end; the distributor of the fog-free humidifier is disposed at the airflow output end; the airflow generating device and the environmental data sensor are both signal-connected to the control unit of the fog-free humidifier.

[0017] Thirdly, this application provides a control method for an air conditioning system as described in any of the foregoing embodiments, which mainly includes: acquiring operating status information of an airflow generating device; acquiring environmental parameters detected by an environmental data sensor; acquiring liquid level data detected by a liquid level detection device of a mist-free humidifier; if the operating status information, the environmental parameters, and the liquid level data all meet preset start-up conditions, then activating the ultrasonic atomizer and air delivery device of the mist-free humidifier; the preset start-up conditions include at least: the airflow generating device is in operation, the humidity data in the environmental parameters is lower than a preset start-up humidity threshold, and the liquid level data is between a preset minimum safe liquid level and a maximum allowable liquid level; adjusting the operating power of the ultrasonic atomizer according to the comparison result between the environmental parameters and the preset humidity target value.

[0018] This application provides a fog-free humidification device, an air conditioning system, and a control method thereof. The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0019] By delivering atomized particles to the distributor at the air outlet of the air supply device, the particles are diverted through multiple release ports and then rapidly dispersed and completely vaporized into gaseous water vapor under the action of the large airflow of the air supply device (such as an air conditioner). This vaporized water vapor enters the indoor space as invisible humid air, eliminating the generation of white fog, white powder, and condensation droplets at the source. This achieves harmless humidification for humidity-sensitive storage environments (such as tea, red wine, cigars, etc.).

[0020] The atomizing medium container is configured to form a sealed pressure chamber. In conjunction with the air supply device, gas is continuously supplied into the atomizing medium container to create a stable positive pressure environment. This keeps the atomized particles in a suspended and flowing state throughout the entire conveying process, avoiding particle settling and pipe wall adhesion caused by reduced flow rate or insufficient pressure. This ensures that the atomized particles can reach the distributor in a stable suspended state, achieving separation between the atomized particle generation and release positions, allowing the humidification device to be externally placed at the air supply device installation location.

[0021] The distributor has multiple release ports spaced along its length, which split the atomized particles into multiple fine streams for simultaneous release, increasing the contact area between the atomized particles and the airflow from the air supply device. The release ports are located on the downstream side of the airflow, ensuring that the atomized particles are released along the airflow direction. Simultaneously, the high-speed airflow continuously washes over the edges of the release ports, preventing the atomized particles from adhering and accumulating. The synergistic effect of these structures ensures uniform distribution and rapid, complete vaporization of the atomized particles across the width of the air outlet of the air supply device.

[0022] The mist guide tube and distributor are designed to be inclined upward along the direction of atomized particle conveying. This allows small water droplets that condense due to collision with the tube wall or temperature changes during the conveying process to flow back to the atomized medium container under the action of gravity, instead of flowing to the end of the distributor and accumulating. This avoids the formation of water film or droplets at the release port, which could cause blockage or dripping from the release port. This also enables the pipeline to be emptied and ensures the smooth flow of the release port during long-term operation.

[0023] After the atomizer stops, the control unit controls the air supply device to continue running for a preset time, actively blowing away and emptying the residual atomized particles in the mist guide tube and distributor, avoiding condensation and blockage caused by static residue, and ensuring smooth pipeline flow during the next startup.

[0024] The control unit communicates with the air supply device to obtain its operating status information. When the air supply device is turned on, the humidifier automatically starts and stops after a delay to vent residual moisture from the pipeline, achieving fully automatic constant humidity control. Simultaneously, the control unit uses an external temperature and humidity sensor to monitor the humidity of the target space in real time and performs closed-loop humidity regulation to keep the humidity of the target space stable within a preset range.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0027] Figure 1 This is a schematic diagram of the structure of a fog-free humidification device provided in an embodiment of this application;

[0028] Figure 2 for Figure 1 Exploded view;

[0029] Figure 3 This is a schematic diagram of the structure of an air conditioning system provided in an embodiment of this application;

[0030] Figure 4 for Figure 3 The front view;

[0031] Figure 5 This is a flowchart illustrating a control method for an air conditioning system provided in an embodiment of this application.

[0032] Figure labels and corresponding explanations:

[0033] 1: Atomizing medium container; 11: Atomizing outlet; 12: Barrel body; 13: Cover; 14: Outer cover; 15: Bottom shell; 16: Medium inlet; 17: Power supply.

[0034] 2: Ultrasonic atomizer.

[0035] 3: Air supply device.

[0036] 4: Mist guide tube.

[0037] 5: Distributor; 51: Release port; 52: Tube body.

[0038] 6: Liquid level detection device.

[0039] 7: Airflow generating device; 71: Airflow output end; 72: Body. Detailed Implementation

[0040] This application is described in detail below. Examples of embodiments of this application are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. Furthermore, detailed descriptions of known technologies that are unnecessary for the features of this application are omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0041] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in the specification of this application means the presence of the stated features, elements, and / or components, but does not exclude the presence or addition of one or more other features, elements, components, and / or groups thereof. The term “and / or” as used herein includes all or any units and all combinations thereof of one or more associated listed items.

[0042] like Figure 1-2 As shown in the figure, this application provides a mist-free humidification device, which mainly includes an atomizing medium container 1, an ultrasonic atomizer 2, an air supply device 3, a mist guide tube 4, a distributor 5, a liquid level detection device 6, and a control unit; the atomizing medium container 1 is configured as a pressure-bearing sealed cavity; the atomizing medium container 1 has an air inlet and a mist outlet 11; the ultrasonic atomizer 2 is disposed inside the atomizing medium container 1 and is used to atomize the atomizing medium into atomized particles; the air supply device 3 is connected to the air inlet and is used to continuously supply gas into the atomizing medium container 1 to create a positive pressure inside, thereby driving the formation of... The atomized particles are output outward through the mist outlet 11; one end of the mist guide tube 4 is connected to the mist outlet 11; the distributor 5 is connected to the other end of the mist guide tube 4, and the distributor 5 has multiple spaced release ports 51. The distributor 5 is used to be set in the airflow so that after the atomized particles are released through the multiple release ports 51, they are vaporized under the action of the airflow and output to the target space in the form of no visible white mist; the liquid level detection device 6 is set in the atomizing medium container 1 to detect the liquid level data; the control unit is connected to and controls the ultrasonic atomizer 2, the air supply device 3 and the liquid level detection device 6.

[0043] In this embodiment, the atomizing medium container 1 is configured as a pressure-bearing sealed cavity, which refers to the space in which the atomizing medium container 1 can maintain an internal gas pressure higher than the external ambient pressure without significant leakage under normal operating conditions. The atomizing medium is water.

[0044] The ultrasonic atomizer 2 operates using the inverse piezoelectric effect of a piezoelectric ceramic transducer. When a high-frequency alternating current signal is applied to the piezoelectric ceramic transducer, the transducer generates high-frequency mechanical vibration. This vibration is transmitted to the liquid surface of the atomizing medium through a conductive medium. When the vibration energy is sufficiently large, the liquid at the surface is torn into tiny droplets and detaches from the surface, forming atomized particles. The operating frequency of the ultrasonic atomizer 2 determines the particle size of the atomized particles; the higher the operating frequency of the ultrasonic atomizer 2, the smaller the particle size of the atomized particles produced. In this embodiment, the operating frequency of the ultrasonic atomizer 2 is 1.5 MHz to 3.0 MHz, preferably 1.7 MHz to 2.4 MHz. Within this frequency range, the ultrasonic atomizer 2 can produce atomized particles with a particle size of 1.5 micrometers to 10 micrometers, more preferably 1 micrometer to 5 micrometers. The rated power of the ultrasonic atomizer 2 is no more than 100 watts, and the operating voltage is a safe extra-low voltage, such as DC 36 volts or DC 24 volts, to ensure safe use.

[0045] The air supply device 3, powered by its own energy, draws in and pressurizes air from the external environment before delivering it into the atomizing medium container 1. Upon entering the atomizing medium container 1, the gas supplied by the air supply device 3 increases the gas volume inside, raising the internal pressure. Simultaneously, it creates airflow within the container, suspending the atomized particles generated by the ultrasonic atomizer 2 within the gas, forming a uniformly distributed aerosol mixture. The air supply device 3 continuously supplies gas into the atomizing medium container 1, maintaining the internal pressure higher than the external environmental pressure, thus providing a continuous driving force for the aerosol mixture to be output from the outlet 11.

[0046] The mist outlet 11 is connected to the mist guide tube 4, which serves as a channel for the atomized particles and gas mixture to flow out of the atomizing medium container 1.

[0047] A liquid level detection device 6 is installed inside the atomizing medium container 1 to detect the liquid level data of the atomizing medium inside the container 1. The liquid level detection device 6 is used to detect the minimum safe liquid level and the maximum permissible liquid level. The minimum safe liquid level is the critical liquid level at which the ultrasonic atomizer 2 will not function properly when the liquid level of the atomizing medium in the container 1 drops below this level; the maximum permissible liquid level is the critical liquid level at which the atomizing medium may overflow from the air inlet or mist outlet 11 when the liquid level of the atomizing medium in the container 1 rises above this level. The mist-free humidification device can only operate when the atomizing medium is between the minimum safe liquid level and the maximum permissible liquid level.

[0048] The control unit acquires the liquid level signal output by the liquid level detection device 6, processes and analyzes the signal, and determines whether the conditions for starting or stopping the ultrasonic atomizer 2 and the air delivery device 3 are met according to the preset control logic. When the control unit determines that the starting conditions are met, it outputs a start control signal to the ultrasonic atomizer 2 and the air delivery device 3, causing them to start working; when the control unit determines that the stopping conditions are met or detects an abnormal situation, it outputs a stop control signal to the ultrasonic atomizer 2 and the air delivery device 3, causing them to stop working.

[0049] In the mist-free humidification device provided in this application, the atomizing medium container 1 is configured to form a sealed pressure-bearing cavity. Gas is continuously supplied into the atomizing medium container 1 by the air supply device 3 to create a positive pressure environment. This causes the atomized particles to be directionally transported through the mist outlet and along the mist guide pipe 4 to the distributor 5 under positive pressure. During the transport process, the particles remain in a suspended flow state, avoiding particle settling and pipe wall adhesion caused by reduced flow velocity or insufficient pressure. This achieves separation between the atomized particle generation and release points. The distributor 5 divides the atomized particles into multiple fine streams. The step release increases the contact area between the atomized particles and the external airflow, allowing the atomized particles to be quickly dispersed, entrained, and re-vaporized into gaseous water vapor under the action of the airflow. This achieves output in a gaseous form without visible white mist, avoiding the problems of white powder pollution and wall wetting. After the ultrasonic atomizer 2 stops, the control unit controls the air delivery device 3 to stop after a delay, blowing away and emptying the residual atomized particles in the mist guide tube 4 and distributor 5. This prevents the residual atomized particles from condensing and accumulating in the pipeline, ensuring smooth pipeline flow during the next startup.

[0050] In some embodiments, the control unit adjusts the operating power of the ultrasonic atomizer 2 by changing the duty cycle of the drive signal applied to the ultrasonic atomizer 2, achieving stepless adjustment. The start and stop of the ultrasonic atomizer 2 are controlled by the control unit. When the control unit outputs a pulse width modulation signal with a high duty cycle, the ultrasonic atomizer 2 operates at a higher power, producing more atomized particles; when the control unit outputs a pulse width modulation signal with a low duty cycle, the ultrasonic atomizer 2 operates at a lower power, producing fewer atomized particles; when the control unit stops outputting the pulse width modulation signal, the ultrasonic atomizer 2 stops working and no longer produces atomized particles. The ultrasonic atomizer 2 is located at the bottom or lower part of the atomizing medium container 1 so that it can still work normally when the liquid level of the atomizing medium is low, avoiding damage caused by the ultrasonic atomizer 2 running dry due to the liquid level dropping and not being able to contact the atomizing medium.

[0051] In some embodiments, the ultrasonic atomizer 2 is powered by a DC36V, approximately 80W, extra-low voltage power supply. It has no electric heating element and no high-temperature scale buildup, thus avoiding the risks of electric heating scale buildup, dry burning, water leakage, and electric leakage.

[0052] In some embodiments, the air delivery device 3 is a fan or an air pump. The air delivery device 3 can be connected to the air inlet via a pipe, in which a flow regulating valve or throttling device can be installed to regulate the gas flow rate entering the atomizing medium container 1, thereby controlling the pressure inside the atomizing medium container 1. The start and stop of the air delivery device 3 are controlled by a control unit. When the ultrasonic atomizer 2 starts, the control unit simultaneously starts the air delivery device 3; when the ultrasonic atomizer 2 stops, the control unit determines whether the air delivery device 3 should stop immediately or after a delay, based on a set delay time. The rotational speed or power of the air delivery device 3 can also be adjusted by the control unit. An air filter can be installed at the air inlet of the air delivery device 3 to filter dust and impurities from the air entering the atomizing medium container 1, preventing contaminants from entering the atomizing medium container 1 and contaminating the atomizing medium or clogging the mist outlet 11.

[0053] In some embodiments, the liquid level detection device 6 is a float-type detection element or a probe-type detection element. The control unit determines whether there is sufficient atomizing medium in the atomizing medium container 1 based on the signal fed back by the liquid level detection device 6, and decides accordingly whether to allow the ultrasonic atomizer 2 to start or whether to issue a water shortage alarm. To improve the reliability of liquid level detection, multiple liquid level detection points can be set in the atomizing medium container 1. For example, a detection point can be set at the lowest safe liquid level for water shortage protection, a detection point can be set at the highest allowable liquid level for full water indication, and a detection point can be set at the intermediate liquid level for liquid level status indication.

[0054] In some embodiments, the distributor 5 is a porous pipe with several small holes (release ports 51) opened along the length of the pipe wall, which can be made of food-grade PVC or PE pipe. The distributor 5 is built into the air conditioning duct or air conditioning outlet, near the air outlet grille; the distributor 5 divides the delivered atomized particles into multiple fine streams through multiple release ports 51 and sprays them out. The atomized particles are quickly blown away, diluted and re-vaporized in the air conditioning airflow.

[0055] As an optional implementation, the atomizing medium container 1 includes a barrel 12, a cover 13, and a seal; the cover 13 covers the opening of the barrel 12, and the seal is disposed between the barrel 12 and the cover 13.

[0056] Based on the foregoing embodiments, in this embodiment, the atomizing medium container 1 is formed by welding AISI 304 stainless steel sheet metal, ensuring full welding, no water leakage, and no air leakage to meet the requirements for sealing and pressurization. In some embodiments, the atomizing medium container 1 may also be made of transparent polycarbonate. The atomizing medium container 1 includes a shell, which includes an outer cover 14 and a bottom shell 15. The outer cover 14 covers the bottom shell 15, and the outer cover 14 and the bottom shell 15 form a cavity. The barrel body 12 and the cover body 13 are fixed within the cavity.

[0057] The top of the cover 13 has a convex shell portion with a through hole serving as a mist outlet 11. The top of the cover 13 also has a first air inlet hole along its thickness direction, which is connected to an air delivery device 3 fixed to the top of the cover 13. The outer cover 14 has a second air inlet hole at a position corresponding to the air delivery device 3, used to deliver external air into the barrel 12.

[0058] The atomizing medium container 1 also includes a medium inlet 16, which is tubular and extends through the cover 13 and the outer shell to replenish the atomizing medium. The atomizing medium container 1 also includes a power supply 17, which is fixed to the outer shell and connected to the ultrasonic atomizer 2, the air delivery device 3, the liquid level detection device 6, and the control unit. The power supply 17 supplies power to the ultrasonic atomizer 2, the air delivery device 3, and the liquid level detection device 6 based on the response to control commands from the control unit. Both the ultrasonic atomizer 2 and the liquid level detection device 6 are located inside the container 12.

[0059] The lid 13 and the barrel 12 can be connected by a threaded connection, where the opening of the barrel 12 has an external thread, and the inner wall of the lid 13 has a matching internal thread. The lid 13 is rotated to achieve a tight connection. Alternatively, the lid 13 and the barrel 12 can be connected by a snap-fit ​​connection, where the opening of the barrel 12 and the edge of the lid 13 have matching snap-fit ​​structures. Pressing or rotating allows for quick locking and opening.

[0060] A sealing element is positioned at the sealing interface between the barrel body 12 and the lid 13 to fill the gap at their connection. The sealing element is annular, and its cross-sectional shape can be O-shaped, rectangular, or irregular. The sealing element can be positioned in two ways: a sealing groove can be provided at the open end of the barrel body 12, into which the sealing element is embedded, and the lid 13 presses the sealing element to achieve a seal; alternatively, a sealing groove can be provided on the inner wall of the lid 13, into which the sealing element is embedded, and the open end of the barrel body 12 is inserted into the lid 13 to press the sealing element to achieve a seal. To ensure the reliability of the seal, one or more sealing elements can be provided between the barrel body 12 and the lid 13, such as inner and outer sealing rings, forming a double-sealing structure. Even if one sealing ring ages or is damaged, the other sealing ring can still maintain its sealing function.

[0061] As an optional implementation, the dispenser 5 has a tube 52, and a plurality of release ports 51 are evenly opened in the tube 52 along the length direction of the tube 52.

[0062] Based on the foregoing embodiments, in this embodiment, the tube 52 can be a circular tube. The length of the tube 52 is substantially matched with the length of the airflow output end 71 of the airflow generating device 7, so that the tube 52 can cover the entire length range of the airflow output end 71, ensuring that the atomized particles can be uniformly released along the length range of the airflow output end 71. The shape of the release port 51 can be a circular hole, a square hole, an elliptical hole, or other shapes. In this embodiment, the opening size of the release port 51 is preferably 1 mm to 10 mm, and the spacing between adjacent release ports 51 is preferably 5 mm to 50 mm. The release ports 51 can be arranged in a single row along the length direction of the tube 52, or in double rows or multiple rows.

[0063] As an alternative implementation, the release port 51 is located on the side of the distributor 5 opposite to the direction of the incoming airflow.

[0064] Based on the aforementioned embodiments, in this embodiment, the release port 51 is located on the side of the distributor 5 facing downstream of the airflow. Here, downstream refers to the downstream direction of the airflow. This arrangement is conducive to the rapid integration of atomized particles into the airflow.

[0065] As an optional implementation, the release port 51 of the dispenser 5 is configured as a tapered hole structure with a larger inner diameter and a smaller outer diameter.

[0066] Based on the aforementioned embodiments, in this embodiment, the opening size of the release port 51 on the inner wall side of the tube body 52 is larger than the opening size on the outer wall side of the tube body 52, forming a conical constriction channel. The conical hole structure allows the atomized particles to accelerate in the conical constriction section when released from the inside of the tube body 52 to the outside, and be ejected from the release port 51 at a higher speed, which can wash away any deposits that may be attached to the edge of the release port 51 and reduce the occurrence of blockage.

[0067] As an optional implementation, the upstream ends of both the mist guide pipe 4 and the distributor 5 along the direction of atomized particle conveying are lower than their downstream ends, and are set at an inclination so that the atomized medium formed by the condensation of atomized particles flows back to the atomized medium container 1 along the slope, thereby realizing the emptying of the pipeline.

[0068] Based on the aforementioned embodiments, in this embodiment, both the mist guide tube 4 and the distributor 5 are inclined upwards. This means that in the direction of atomized particle transport, the mist guide tube 4 and the distributor 5 gradually rise from the starting end to the ending end. During transport, some atomized particles may condense due to collisions with the tube wall or temperature changes, forming small water droplets that adhere to the inner wall of the mist guide tube 4 or the distributor 5. These droplets flow downwards along the tube wall under gravity. If the mist guide tube 4 and the distributor 5 are inclined upwards in the transport direction, these droplets will flow back towards the starting end, i.e., towards the atomizing medium container 1, and eventually return to the atomizing medium container 1. In this way, the small water droplets will not accumulate at the end of the distributor 5 or drip from the release port 51, avoiding the problem of water accumulation at the distributor 5.

[0069] In some embodiments, the mist guide tube 4 is a corrosion-resistant hose.

[0070] As an optional implementation, the dispenser 5 has a tube 52, the inner surface of the upper inner wall of the tube 52 is provided with a hydrophobic coating, and the inner surface of the lower inner wall is provided with a hydrophilic coating.

[0071] Based on the aforementioned embodiments, in this embodiment, the inner surface of the upper wall of the distributor 5 tube 52 is provided with a hydrophobic coating to prevent atomized particles from condensing on the upper wall; the inner surface of the lower wall of the tube 52 is provided with a hydrophilic coating to allow condensed water droplets to quickly spread and form a thin liquid film on the hydrophilic surface, accelerating evaporation. The hydrophobic coating is a fluorocarbon coating or an organosilicon coating. The hydrophilic coating is a titanium dioxide coating or a plasma-treated surface. By treating the inner wall of the tube 52, the condensation of atomized particles on the tube wall is reduced, improving the conveying efficiency of atomized particles, while preventing condensed water from accumulating on the tube wall and forming large water droplets that block the release port 51 or drip from the release port 51.

[0072] As an optional implementation, the dispenser 5 has a tube body 52, which includes an inner tube and an outer tube that are sleeved together. The inner tube can slide relative to the outer tube along its own axial direction. Both the inner tube and the outer tube have a release port 51 on their walls. A sealing ring is provided between the inner tube and the outer tube to prevent atomized particles from leaking from the sleeve.

[0073] In some embodiments, the inner tube can slide axially within the outer tube, adjusting the total length of the distributor 5 to adapt to different working conditions. When the inner tube slides out of the outer tube, the release port 51 on the inner tube is exposed to the outside, and the release ports 51 on both the inner and outer tubes participate in the release of atomized particles, increasing the effective length of the distributor 5. When the inner tube retracts into the outer tube, the release port 51 on the inner tube is covered by the outer tube, and only the release port 51 on the outer tube participates in the release, decreasing the effective length of the distributor 5. After the extension and retraction adjustment is completed, the position of the inner tube relative to the outer tube can be fixed by locking screws. This type of distributor can adapt to various working conditions.

[0074] In some embodiments, a replaceable nozzle is provided at the release port 51 of the distributor 5. The nozzle is detachably connected to the tube body 52 by threads or snaps. Different nozzle sizes have different inner diameters and outlet angles. Large-diameter nozzles have lower release speeds and larger release angles, suitable for high-airflow scenarios; small-diameter nozzles have higher release speeds and smaller release angles, suitable for low-airflow scenarios. Users can replace the appropriate nozzle by rotating or plugging it in according to actual operating conditions. If the nozzle becomes clogged or worn after long-term use, it can be replaced individually without replacing the entire distributor 5 tube body 52.

[0075] In some embodiments, a spiral guide vane is provided inside the mist guide tube 4. The guide vane is fixed to the inner wall of the mist guide tube 4 and extends spirally along the length of the mist guide tube 4. Its guiding direction is consistent with the airflow direction, so that the aerosol mixture generates a rotating flow under the guidance of the guide vane when passing through it. The guiding structure generates micro-turbulence in the aerosol mixture during the transportation process, so that the atomized particles are evenly distributed in the airflow, reducing local condensation and sedimentation caused by uneven distribution of atomized particles, and improving the uniformity and stability of atomized particles when transported to the distributor 5.

[0076] like Figure 1-4 As shown, based on the same inventive concept, this application provides an air conditioning system, which mainly includes an environmental data sensor, an airflow generating device 7, and any of the fog-free humidification devices in the foregoing embodiments; the environmental data sensor is set in the target space to acquire environmental parameters, which include at least humidity data; the airflow generating device 7 has an airflow output end 71; the distributor 5 of the fog-free humidification device is set at the airflow output end 71; both the airflow generating device 7 and the environmental data sensor are signal connected to the control unit of the fog-free humidification device.

[0077] Based on the foregoing embodiments, in this embodiment, the airflow generating device 7 includes a body 72 and an airflow output end 71 connected to the body 72; the body 72 is used to generate airflow, and the airflow output end 71 is used to guide the airflow to the area where the distributor 5 is located, so that the atomized particles are evenly diffused with the airflow.

[0078] The mist-free humidifier converts the atomizing medium into fine atomized particles and provides positive pressure driving force; the mist guide tube 4 serves as a conveying channel for the atomized particles, conveying the atomized particles generated by the mist-free humidifier to the distributor 5; the distributor 5 evenly releases the atomized particles conveyed by the mist guide tube 4 at the airflow output end 71 through multiple release ports 51; the environmental data sensor detects the environmental parameters of the target space in real time, especially the humidity data, and feeds it back to the control unit; the airflow generating device 7 provides the airflow power required to convey the atomized particles through its airflow output end 71, and also carries and disperses the released atomized particles to the target space.

[0079] The mist guide tube 4 is made of tubing with appropriate flexibility and corrosion resistance to facilitate its arrangement and connection between the mist-free humidification device and the airflow generating device 7. The mist guide tube 4 passes through the outer shell of the atomizing medium container 1 and is connected to the mist outlet 11.

[0080] Multiple release ports 51 of the distributor 5 are distributed at intervals along the length or arrangement direction of the distributor 5, so that atomized particles can be released simultaneously from multiple points, thereby forming a uniform distribution of atomized particles within the length range of the airflow output end 71. The distributor 5 is located at the airflow output end 71 of the airflow generating device 7, so that the atomized particles released from the release ports 51 directly enter the airflow output by the airflow generating device 7, are carried by the airflow and dispersed to the target space.

[0081] An environmental data sensor is installed within the target space to acquire environmental parameters, including at least humidity data and potentially temperature data. The sensor continuously monitors the humidity level of the target space and transmits this data to the control unit of the mist-free humidifier. Based on the humidity data from the sensor, the control unit determines the current humidity level of the target space and accordingly controls the start, stop, and power adjustment of the mist-free humidifier.

[0082] The airflow generating device 7, through its internal fan or blower, draws in air, accelerates it, and then blows it outward from the airflow output end 71, forming an airflow with a certain speed and direction. The airflow generating device 7 can be an indoor air conditioning unit, a fresh air system, ventilation equipment, or any other device capable of generating directional airflow. The distributor 5 is located at the airflow output end 71, such that the release port 51 of the distributor 5 is located in the airflow path output by the airflow generating device 7. When the atomized particles are released from the release port 51, they are immediately drawn in and carried by the high-speed airflow at the airflow output end 71, and blown out from the airflow output end 71 along with the airflow and dispersed into the target space.

[0083] Both the airflow generating device 7 and the environmental data sensor are connected to the control unit of the mist-free humidifier. The connection between the airflow generating device 7 and the control unit allows the control unit to obtain information about the operating status of the airflow generating device 7, such as whether it is in operation, the current operating mode, and the fan speed setting. The mist-free humidifier is allowed to start when the airflow generating device 7 is in operation, and is prohibited from starting when the airflow generating device 7 is not in operation. The environmental data sensor is also connected to the control unit, allowing the control unit to obtain environmental parameters detected by the sensor, especially humidity data. The mist-free humidifier is activated when the humidity is below a preset activation humidity threshold, and is prohibited from starting or stopped when the ambient humidity reaches or exceeds the preset activation humidity threshold.

[0084] In this application, the ultrasonic atomizer is responsible for atomizing the atomizing medium into micron-sized droplets in a single pass, while the air conditioner outlet is responsible for a secondary vaporization of the droplets into water vapor. The water mist generated by ultrasonic atomization is sent into the air conditioner outlet, dispersed through a porous secondary vaporization tube, and then completely vaporized into gaseous water vapor by the high-volume airflow from the air conditioner. The outlet outputs a moist, clean airflow, free of visible white mist, white powder, and condensation droplets.

[0085] The working principle and process of the above-mentioned air conditioning system are as follows.

[0086] Before operating the air conditioning system, the user injects an appropriate amount of atomizing medium into the atomizing medium container 1 of the mist-free humidifier. When the user turns on the airflow generating device 7 (e.g., by turning on the indoor unit of the air conditioner), the airflow generating device 7 starts operating and outputs airflow from its airflow output terminal 71. After the airflow generating device 7 starts, it sends an operating status signal to the control unit of the mist-free humidifier, or the control unit detects that the airflow generating device 7 is in operation through other means. After receiving the operating status signal from the airflow generating device 7, the control unit detects whether the liquid level in the atomizing medium container 1 is too high or too low through the liquid level detection device 6, and detects whether the current humidity of the target space is lower than the preset start-up humidity threshold through the environmental data sensor. If the liquid level is within the safe liquid level range and the current humidity is lower than the preset start-up humidity threshold, the control unit controls the ultrasonic atomizer 2 and the air delivery device 3 to start. After the ultrasonic atomizer 2 starts, it converts the atomizing medium into atomized particles. After the air delivery device 3 starts, it sends gas into the atomizing medium container 1 to form a positive pressure. This positive pressure drives the atomized particles to be output from the mist outlet 11 to the mist guide tube 4. The atomized particles are conveyed to the distributor 5 via the mist guide tube 4, and then released at the airflow output end 71 through multiple release ports 51 on the distributor 5. The airflow generated by the airflow generator 7 from the airflow output end 71 entrains and carries the released atomized particles, dispersing them evenly throughout the target space. During dispersion, the atomized particles rapidly evaporate into gaseous water vapor, thereby increasing the humidity of the target space. During operation, the control unit continuously monitors the humidity data fed back by the environmental data sensor. When the humidity of the target space reaches the preset target value, the control unit controls the ultrasonic atomizer 2 to stop working; when the humidity of the target space falls below the preset start-up humidity threshold again, the control unit restarts the ultrasonic atomizer 2. This cycle continues, keeping the humidity of the target space within the set comfortable range.

[0087] In some embodiments, the airflow output end 71 has a box-shaped structure with one end open; the tube body 52 of the distributor 5 extends into the airflow output end 71 from the side of the airflow output end 71, and the release port 51 is opened on the side of the tube body 52 facing downstream of the airflow output end 71.

[0088] like Figure 5As shown, based on the same inventive concept, this application provides a control method for an air conditioning system according to any of the foregoing embodiments, which mainly includes steps S1-S5:

[0089] Step S1: Obtain the operating status information of the airflow generating device 7;

[0090] Step S2: Obtain environmental parameters detected by the environmental data sensors;

[0091] Step S3: Obtain the liquid level data detected by the liquid level detection device 6 of the mist-free humidification device;

[0092] Step S4: If the operating status information, environmental parameters and liquid level data all meet the preset start-up conditions, then start the ultrasonic atomizer 2 and air delivery device 3 of the mist-free humidification device.

[0093] Step S5: Adjust the operating power of the ultrasonic atomizer 2 based on the comparison results between the environmental parameters and the preset humidity target value.

[0094] Based on the foregoing embodiments, in this embodiment, the control unit acquires three input signals: the operating status information of the airflow generating device 7, the humidity data in the environmental parameters detected by the environmental data sensor, and the liquid level data detected by the liquid level detection device 6. The preset start-up conditions in the aforementioned step S4 include at least: the airflow generating device 7 is in operation, the humidity data in the environmental parameters is lower than the preset start-up humidity threshold, and the liquid level data is between the preset minimum safe liquid level and the maximum allowable liquid level.

[0095] The control unit compares the operating status information of the airflow generating device 7 with the preset operating status conditions. If the airflow generating device 7 is currently in operation, the condition is met; if the airflow generating device 7 is not currently in operation, the condition is not met.

[0096] The control unit compares the ambient humidity data with a preset startup humidity threshold. If the current humidity is lower than the preset startup humidity threshold, the condition is met; otherwise, the condition is not met.

[0097] The control unit compares the liquid level data with the preset safe liquid level threshold. If the current liquid level is between the minimum safe liquid level and the maximum allowable liquid level, the condition is met. If the current liquid level is lower than the minimum safe liquid level or higher than the maximum allowable liquid level, the condition is not met.

[0098] The control unit can only output a start command to start the ultrasonic atomizer 2 and the air delivery device 3 when all three conditions are met. If any one of the three conditions is not met, the control unit will not output a start command, and the ultrasonic atomizer 2 and the air delivery device 3 will remain in a stopped state.

[0099] During the operation of the ultrasonic atomizer 2 and the air delivery device 3, the control unit continuously acquires and monitors these three signals. If any signal is detected as no longer meeting the conditions, the control unit immediately outputs a stop command to stop the ultrasonic atomizer 2. For the air delivery device 3, the control unit can choose to stop synchronously with the ultrasonic atomizer 2, or it can choose to stop after a delay following the stop of the ultrasonic atomizer 2.

[0100] In some embodiments, the control unit acquires the airflow level of the airflow generating device 7 and adjusts the upper limit of the operating power of the ultrasonic atomizer 2 according to the airflow level. The airflow generating device 7 is an indoor air conditioning unit, which has multiple airflow levels, such as low, medium, and high. The indoor air conditioning unit sends the current airflow level information to the control unit in real time. The control unit pre-stores the power limiting coefficient of the ultrasonic atomizer 2 corresponding to each airflow level of the airflow generating device 7. For example, the low airflow level corresponds to a lower power limiting coefficient, and the high airflow level corresponds to a higher power limiting coefficient. When the indoor air conditioning unit is operating in cooling mode and the indoor temperature reaches the set temperature, the speed of the cross-flow fan of the indoor air conditioning unit will automatically decrease, and the airflow level will switch from high to low. At this time, the control unit detects the change in airflow level in real time and synchronously switches the power limiting coefficient of the ultrasonic atomizer 2 to the coefficient corresponding to the low airflow level, so that the atomization amount automatically decreases as the airflow decreases. This avoids the problem of atomized particles not being completely vaporized and condensing into water droplets at the air outlet or on the wall surface when the atomization volume is not reduced accordingly due to reduced air volume. It ensures that condensation-free humidification can be achieved under various air volume conditions, while realizing on-demand energy allocation and avoiding energy waste caused by excessive atomization power under low air volume.

[0101] In some embodiments, a temperature sensor is provided at the airflow output end 71 of the airflow generating device 7. This temperature sensor is signal-connected to the control unit and is used to detect the temperature value at the airflow output end 71 in real time. The control unit has a first temperature threshold and a second temperature threshold preset, wherein the first temperature threshold is higher than the second temperature threshold. During the operation of the mist-free humidification device, the control unit continuously monitors the outlet temperature. When the outlet temperature is detected to be lower than the first temperature threshold but higher than the second temperature threshold, the control unit determines that there is a risk of condensation and reduces the operating power of the ultrasonic atomizer 2 to reduce the release of atomized particles. When the outlet temperature is detected to further decrease to below the second temperature threshold, the control unit determines that the risk of condensation is high and immediately controls the ultrasonic atomizer 2 to stop operating, while keeping the air supply device 3 running. After the outlet temperature rises back above the first temperature threshold, the control unit controls the ultrasonic atomizer 2 to resume operation according to the current humidity control strategy. This solves the problem of condensation on the inner wall of the outlet, the air guide plate, or the nearby wall when the outlet temperature is too low under air conditioning cooling conditions, avoiding bacterial growth and aesthetic problems caused by condensation.

[0102] In some embodiments, after the ultrasonic atomizer 2 stops, the control unit controls the air delivery device 3 to operate intermittently in a pulsed manner. When the control unit stops the ultrasonic atomizer 2, the air delivery device 3 first operates continuously for a preset delay time to blow out and empty a large amount of residual atomized particles and condensed water from the mist guide tube 4 and the distributor 5. After the delay time ends, the air delivery device 3 enters the pulsed emptying stage, that is, it is turned on briefly and then stopped, then turned on briefly again after a few seconds, and this process is repeated multiple times. The pulsed airflow forms intermittent shock waves in the pipeline, which can blow away the residual water film and fine water droplets attached to the pipe wall and carry them to the distributor 5 for discharge.

[0103] The present invention will now be described in further detail with reference to specific embodiments.

[0104] In the first specific embodiment, the sealed water tank of the mist-free humidification device has a volume of 5L. The tank body 12 is injection molded from transparent polycarbonate material with a wall thickness of 3mm, possessing sufficient structural strength to withstand internal positive pressure. The atomizing medium is tap water.

[0105] The ultrasonic atomizer 2 operates at a frequency of 1.7MHz, has an atomizing plate diameter of 20mm, a rated power of 80W, and an operating voltage of DC 36V. The ultrasonic atomizer 2 is located at the bottom of the barrel 12, with the surface of the atomizing plate essentially flush with the inner surface of the bottom of the barrel 12, ensuring sufficient contact between the atomizing medium and the atomizing plate even when the liquid level is low. The drive circuit for the ultrasonic atomizer 2 is located outside the barrel 12 and is connected to the atomizing plate via a waterproof wire.

[0106] The air supply device 3 uses a vortex fan with a rated voltage of DC 24V, a rated power of 30W, a maximum air pressure of 300Pa, and a maximum air volume of 2m³ / min. The vortex fan is located on the outside of the casing 12 and is connected to the air inlet via a silicone hose with an inner diameter of 10mm and a length of 200mm. A primary air filter is installed at the air inlet of the vortex fan to filter dust and impurities from the air.

[0107] The liquid level detection device 6 employs a probe-type detection element, comprising three stainless steel probes and a detection circuit. The three probes are positioned at different heights inside the tank 12, corresponding to the minimum safe liquid level, the intermediate liquid level, and the maximum permissible liquid level, respectively. The probes are connected to the detection circuit via wires, and the detection circuit is connected to the control unit via wires. The detection circuit outputs a corresponding liquid level signal based on the conductivity state between the probes.

[0108] The control unit uses an STM32 series microcontroller, which integrates a memory module and a clock module. The control unit is housed in a separate control box mounted on the side wall of the barrel 12. The control unit is electrically connected to the ultrasonic atomizer 2, the air delivery device 3, and the liquid level detection device 6 via wires. The control unit is also connected to the main control unit of the environmental data sensor and the airflow generating device 7 via signal lines.

[0109] The mist guide pipe 4 is a polyethylene hose with an inner diameter of 20mm and a length of 2m. One end is connected to the mist outlet 11 through a pipe connector, and the other end is connected to the distributor 5 through a pipe connector.

[0110] The distributor 5 has a pipe body 52 structure with a total length of 800mm, which matches the length of the air outlet of the indoor air conditioning unit. Every 30mm along the length of the pipe body 52, a 5mm diameter circular hole is opened as a release port 51, for a total of 27 release ports 51. One end of the pipe body 52 is connected to the mist guide pipe 4 via a pipe connector, and the other end is equipped with a removable plug.

[0111] The environmental data sensor uses an SHT30 temperature and humidity sensor, which is placed in the center of the target space, about 1.5m above the ground, to detect the temperature and humidity data of the target space and transmit the detected data to the control unit.

[0112] The airflow generating device 7 is a wall-mounted indoor air conditioner unit, which has an airflow output end 71. A cross-flow fan drives airflow to blow outward from the airflow output end 71, with a rated airflow of 500 m³ / h. The main control unit and control unit of the indoor air conditioner unit are connected via an RS485 bus. The control unit obtains the operating status information of the indoor air conditioner unit through this bus, including the start-up status, current operating mode, and fan speed setting.

[0113] The preset humidity target value is 60%RH, the preset start-up humidity threshold is 55%RH (i.e., target humidity minus 5% hysteresis), and the preset safe liquid level corresponds to the liquid level height when the internal volume of the tank is 12% remaining. This liquid level height is the preset safe liquid level.

[0114] The humidification capacity is approximately 500 mL / h, suitable for room areas of 30-50 m². No condensation droplets were observed at the air outlet and surrounding walls, and no white powder residue was found on the surfaces of indoor furniture after 24 hours of continuous operation. The humidity difference measured at 1m, 3m, and 5m from the air outlet was ≤3%RH, indicating excellent humidification uniformity.

[0115] In the second specific embodiment, the difference from the first embodiment is that the liquid level detection device 6 uses a float-type detection element instead of a probe-type detection element, the working frequency of the ultrasonic atomizer 2 is adjusted to 2.4MHz, and the atomizing medium is pure water.

[0116] The ultrasonic atomizer 2 operates at a frequency of 2.4MHz, producing atomized particles with a smaller diameter of approximately 1-3μm.

[0117] The working process of the air conditioning system in this embodiment is basically the same as that in the first specific embodiment. The difference is that, due to the smaller particle size of the atomized particles, the atomized particles completely evaporate about 0.5m downstream of the air conditioner outlet, and no visible white mist is observed. The evaporation completion distance is better than that of about 0.8m in the first embodiment. The measured humidification rate is about 280mL / h, and it is suitable for room areas of 30-50m². No condensation droplets were observed at the air outlet and on the surrounding walls. After 24 hours of continuous operation, no white powder residue was observed on the surface of indoor furniture.

[0118] In the third specific embodiment, the difference from the first specific embodiment is that: the control unit adds a linkage control interface with the main control unit of the air conditioner indoor unit, and uses the RS485 communication protocol to realize bidirectional data interaction; the environmental data sensor is placed externally in the center of the room, at a height of 1.5m above the ground; the control unit has a built-in proportional-integral-derivative control strategy.

[0119] The control unit establishes a signal connection with the main control unit of the indoor air conditioner via an RS485 bus. It not only receives the operating status signal of the indoor air conditioner, but also sends the operating status data of the mist-free humidification device to the main control unit of the indoor air conditioner, realizing two-way data interaction.

[0120] The control unit incorporates a proportional-integral-derivative (PID) control strategy. It calculates the deviation between the ambient humidity and the preset target humidity value, and based on this deviation, calculates the target power of the ultrasonic atomizer 2 using a PID algorithm. Then, it adjusts the actual operating power of the ultrasonic atomizer 2 using pulse width modulation (PWM). The proportional, integral, and derivative coefficients are tuned according to the system response characteristics to achieve fast response, no steady-state error, and suppression of overshoot control.

[0121] The control unit also features a delayed stop function. When the control unit detects that the indoor unit of the air conditioner is turned off, it immediately stops the ultrasonic atomizer 2, but the air supply device 3 continues to operate and stops after a 3-minute delay. During the delayed stop, the air supply device 3 continuously supplies gas into the tank 12, blowing out and purging any residual atomized particles and condensate in the mist guide pipe 4 and distributor 5, preventing residual water mist from condensing into liquid water and accumulating in the pipeline.

[0122] The operation of the air conditioning system in this embodiment is basically the same as that in the first specific embodiment, the difference being in the linkage control logic and control strategy. After the air conditioner is turned on, the humidifier automatically starts without manual operation. During operation, the control unit adjusts the operating power of the ultrasonic atomizer 2 in real time through a proportional-integral-derivative control strategy, stabilizing the humidity of the target space near the preset humidity target value, with a humidity control accuracy of ±5%RH. After the air conditioner is turned off, the ultrasonic atomizer 2 of the humidifier immediately stops working; the air delivery device 3 stops after a 3-minute delay; residual water mist in the pipeline is completely emptied within 3 minutes, leaving no residual water. The linkage control response time is ≤2 seconds after the air conditioner is turned on; the humidifier starts automatically. The ease of use is significantly better than the independent control scheme.

[0123] In the first comparative embodiment, the conventional ultrasonic humidifier uses an ultrasonic atomizing plate with the same atomization power as the first specific embodiment, operating at a frequency of 1.7MHz. However, the water mist is directly discharged into the indoor space through a small fan, without a sealed pressurized delivery structure, a distributor 5, or integrated air conditioning duct. The humidifier is placed on the floor in the center of the room, and the small fan blows the atomized particles generated by the atomizing plate directly into the room.

[0124] The test results for this comparative example are as follows: After running for 2 hours, obvious water droplets condensed on the wall surface around the humidifier (i.e., the wall became wet); after running for 24 hours using tap water, obvious white powder residue was visible on the surface of the surrounding furniture; the humidity at a distance of more than 3 meters from the humidifier was significantly lower than that at a distance of less than 1 meter, with a humidity difference ≥10%RH, indicating poor humidification uniformity. The water mist completely evaporated at a distance of approximately 2 meters from the humidifier.

[0125] In the second comparative embodiment, the same atomization system as the first specific embodiment is used, namely the same ultrasonic atomizer 2, sealed water tank, air delivery device 3, and mist guide tube 4. However, the water mist is directly delivered into the return air vent of the indoor unit of the air conditioner instead of the air outlet, and there is no porous distributor 5 structure. The end of the mist guide tube 4 is located at the return air vent of the indoor unit of the air conditioner, and the atomized particles are directly discharged from the end of the mist guide tube 4 into the return air vent, and enter the interior of the indoor unit of the air conditioner with the return airflow.

[0126] The test results for this comparative example are as follows: When water mist passes through the evaporator of the indoor unit of the air conditioner, some of the atomized particles condense on the surface of the evaporator fins. Long-term operation leads to increased airflow and increased air resistance. The humidity delivered from the air outlet is uneven, with noticeable dampness in some areas. The water mist largely evaporates at a distance of approximately 1.5m from the return air vent, but obvious water droplets condense on the surface of the evaporator fins. After 24 hours of operation, a small amount of white powder residue remains on the surface of the evaporator fins.

[0127] Based on the above three specific embodiments and two comparative embodiments, the following conclusions can be drawn: the sealed pressurized delivery structure, the multi-point release structure of the distributor 5, and the way it is integrated with the air conditioning outlet of this application have significant advantages in suppressing white powder pollution, preventing wall wetting, and improving humidification uniformity and evaporation efficiency. In the first comparative embodiment, due to the lack of sealed pressurized delivery and integration with the air conditioning duct, significant white powder pollution and wall wetting problems occurred. Although the second comparative embodiment was connected to the air conditioning system, the connection point was a return air vent and there was no distributor 5 structure, resulting in evaporator scaling and uneven airflow. In contrast, the three specific embodiments, by delivering the atomized particles to the air conditioning outlet and releasing them evenly through the distributor 5, utilize the air conditioning outlet airflow to quickly entrain and completely evaporate the atomized particles, achieving the technical effect of no white powder, no condensation, and uniform humidification.

[0128] In the description of this application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0129] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0130] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0131] It should be understood that although the steps in the flowcharts of the accompanying figures are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the accompanying figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0132] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A mist-free humidification device, characterized in that, include: The atomizing medium container (1) is configured as a pressure-bearing sealed cavity; the atomizing medium container (1) has an air inlet and a mist outlet (11). An ultrasonic atomizer (2) is disposed inside the atomizing medium container (1) and is used to atomize the atomizing medium into atomized particles; The gas supply device (3) is connected to the air inlet and is used to continuously supply gas into the atomizing medium container (1) to create a positive pressure inside, so as to drive the atomized particles formed to be output outward through the mist outlet (11). The mist guide tube (4) is connected at one end to the mist outlet; Distributor (5) is connected to the other end of the mist guide tube (4). Distributor (5) has multiple spaced release ports (51). Distributor (5) is used to be placed in the airflow so that the atomized particles are released through the multiple release ports (51) and vaporized under the action of the airflow, and output to the target space in the form of no visible white mist with the airflow. A liquid level detection device (6) is installed inside the atomizing medium container (1) for detecting liquid level data; The control unit connects to and controls the ultrasonic atomizer (2), the air delivery device (3), and the liquid level detection device (6).

2. The mist-free humidification device according to claim 1, characterized in that, The atomizing medium container (1) includes a barrel (12), a cover (13), and a sealing element; The cover (13) is placed over the opening of the barrel (12), and the seal is disposed between the barrel (12) and the cover (13).

3. The mist-free humidification device according to claim 1, characterized in that, The dispenser (5) has a tube (52) and the plurality of release ports (51) are evenly distributed along the length of the tube (52).

4. The mist-free humidification device according to claim 1, characterized in that, The release port (51) is located on the side of the distributor (5) facing away from the direction of the incoming airflow.

5. The mist-free humidification device according to claim 1, characterized in that, The release port (51) of the dispenser (5) is configured as a tapered hole structure with a larger inner diameter and a smaller outer diameter.

6. The mist-free humidification device according to claim 1, characterized in that, Both the mist guide pipe (4) and the distributor (5) are positioned with their upstream ends lower than their downstream ends along the direction of atomized particle transport, so that the atomized medium formed by the condensation of atomized particles flows back to the atomized medium container (1) along the slope, thereby realizing pipeline venting.

7. The mist-free humidification device according to claim 1, characterized in that, The dispenser (5) has a tube (52), the inner surface of the upper inner wall of the tube (52) is provided with a hydrophobic coating, and the inner surface of the lower inner wall is provided with a hydrophilic coating.

8. The mist-free humidification device according to claim 1, characterized in that, The distributor (5) has a tube body (52) comprising an inner tube and an outer tube, the inner tube being slidable relative to the outer tube along its own axial direction; Both the inner tube and the outer tube have a release port (51) on their walls, and a sealing ring is provided between the inner tube and the outer tube to prevent atomized particles from leaking from the joint.

9. An air conditioning system, characterized in that, include: The mist-free humidification device as described in any one of claims 1-8; An environmental data sensor is installed in the target space to acquire environmental parameters, which include at least humidity data. An airflow generating device (7) has an airflow output end (71); the distributor (5) of the mist-free humidification device is disposed at the airflow output end (71). The airflow generating device (7) and the environmental data sensor are both signal-connected to the control unit of the fog-free humidification device.

10. A control method for an air conditioning system as described in claim 9, characterized in that, include: Obtain the operating status information of the airflow generating device (7); Acquire environmental data by sensors that detect environmental parameters. Obtain the liquid level data detected by the liquid level detection device (6) of the mist-free humidification device; If the operating status information, the environmental parameters, and the liquid level data all meet the preset start conditions, then the ultrasonic atomizer (2) and the air delivery device (3) of the fog-free humidification device are started; the preset start conditions include at least: the airflow generating device (7) is in operation, the humidity data in the environmental parameters is lower than the preset start humidity threshold, and the liquid level data is between the preset minimum safe liquid level and the maximum allowable liquid level; Based on the comparison results between the environmental parameters and the preset humidity target value, the operating power of the ultrasonic atomizer (2) is adjusted.

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