A desktop ultrasonic micro-mist terminal with oxygen supply-humidification cooperative adaptive regulation

Abstract

The present application relates to highland oxygen supply technical field, especially in a kind of oxygen supply-humidification collaborative self-adaptive adjustment's desktop ultrasonic micro-mist terminal, including shell, humidification component and monitoring control component, shell is opened with the oxygen inlet connected with oxygen generator, humidification component includes water tank and is set in the porous distributor and ultrasonic micro-porous atomization piece in water tank, water tank is set in the shell inside, oxygen inlet is connected to porous distributor by air inlet pipe, oxygen flow control valve and oxygen flow sensor are set on air inlet pipe, ultrasonic micro-porous atomization piece is set in water tank bottom;Water tank is also provided with oxygen outlet pipe, one end of oxygen outlet pipe is communicated water tank inside, the other end is connected to air outlet.The present application can automatically adjust target oxygen supply flow according to ambient air pressure, and according to environmental humidity intelligent control ultrasonic atomization working state, enhance gas-liquid mass transfer by porous distributor, simultaneously realize water level detection and sound-light alarm, to realize safe, stable and comfortable humidification oxygen supply in plateau scene.

Description

Technical Field

[0001] This invention relates to the field of high-altitude oxygen supply technology, specifically a desktop ultrasonic micro-mist terminal with coordinated adaptive regulation of oxygen supply and humidification. Background Technology

[0002] In high-altitude and other low-pressure environments, due to the significant reduction in atmospheric pressure and oxygen partial pressure, residents and patients often require long-term or intermittent oxygen therapy to alleviate hypoxia symptoms and improve sleep quality and daily activity levels. These oxygen supply terminals are typically used in conjunction with hospital central oxygen supply systems or home oxygen concentrators. They reduce the irritation of dry, low-temperature gases on the upper respiratory tract mucosa through humidification and, when necessary, heating, thereby improving the comfort of oxygen therapy.

[0003] The most common humidification method in current clinical and home settings is the bubble-type humidification bottle connected in series with an oxygen flow meter or oxygen concentrator, represented by Chinese utility model patent CN201404563Y "Medical Oxygen Humidification Bottle". This type of device typically consists of a bottle body, a sealed cap with an inlet and outlet air duct, and a porous or hollow component at the inlet end inside the bottle. Oxygen enters the bottom of the bottle through the inlet air duct, passes through the water layer inside the bottle in the form of bubbles, and is then output through the outlet air duct, thus achieving simple humidification of oxygen. At the same time, the structural design reduces the noise generated by the overflow of bubbles. This type of humidification bottle has a simple structure and is easy to promote, but its humidification intensity mainly depends on a fixed liquid level and bubble size, resulting in a limited gas-liquid contact area and low humidification efficiency. The oxygen flow rate is generally manually set by the flow meter knob, without considering the impact of changes in ambient air pressure on the actual oxygen content at the inhalation end, and it also lacks online monitoring of parameters such as ambient temperature and humidity, oxygen concentration, and water level, as well as water shortage protection functions.

[0004] To address the challenges of dry air and low temperatures in high-altitude environments, portable heating and humidifying devices have been developed. For example, Chinese invention patent CN115845283A, "A Portable Heating and Humidifying Oxygen Absorption Device for High-Altitude Areas," discloses a portable device formed by combining upper and lower shells. A cylindrical groove and ultrasonic atomizing plate are located at the bottom of the upper shell. Water is introduced into the atomization zone using absorbent cotton swabs to generate atomized gas. Simultaneously, heating and heat-conducting wires are arranged inside the oxygen absorption tube, and an insulation layer is installed on the outside of the tube to heat the inhaled oxygen and reduce condensation formation within the pipeline. This device can combine heating and humidification functions, improving comfort during oxygen inhalation in cold, high-altitude areas. However, its oxygen flow rate adjustment is still primarily based on manual settings, without establishing a correlation between ambient air pressure and the target oxygen supply flow rate. The humidification mainly relies on localized atomization and pipeline delivery, lacking precise control over the output droplet size distribution and failing to consider integration with a desktop terminal for precise air delivery to the breathing zone.

[0005] Furthermore, to address the issue of real-time changes in oxygen flow rate according to human needs in high-altitude environments, some literature has proposed adaptive oxygen supply control systems. For example, Chinese invention patent application CN118846317A, "An Adaptive Oxygen Flow Control System and Method under High-Altitude Conditions," proposes to achieve closed-loop regulation of oxygen flow rate by monitoring the user's blood oxygen saturation and combining it with an oxygen flow control valve installed in the air intake pipe. The final stage still connects to a conventional humidification bottle for humidification. While this system has certain advantages in adaptive oxygen flow control, its humidification module still uses a traditional bubble-type humidification structure. It lacks specific design for enhancing gas-liquid mass transfer and controlling droplet size, and it does not consider environmental parameters such as ambient air pressure and relative humidity in conjunction with humidification intensity and output airflow conditions.

[0006] In summary, existing high-altitude oxygen supply terminals mostly employ a combination of an oxygen supply control system, a traditional humidification bottle or heating / humidification accessories, and a fixed-flow oxygen supply. These technologies generally suffer from the following shortcomings: First, they fail to automatically compensate for oxygen flow based on ambient air pressure at the terminal, easily leading to insufficient actual oxygen intake or arbitrary settings in high-altitude areas. Second, the humidification modules are mostly large bubbles or simple atomization structures, with limited gas-liquid contact area and uncontrollable droplet size distribution, easily forming condensation in pipelines or at the user's mouth and nose, affecting comfort and safety. Third, they lack comprehensive monitoring and coordinated control of multiple parameters such as ambient temperature and humidity, oxygen concentration, air pressure, and water level, making it difficult to achieve coordinated adaptive adjustment of oxygen supply and humidification intensity, and hindering the creation of a safe, stable, and comfortable localized humidified oxygen supply microenvironment near the desktop. Therefore, it is necessary to develop a compact desktop ultrasonic micro-mist oxygen supply terminal that integrates environmental sensing, adaptive oxygen flow compensation, and efficient and controllable humidification functions to overcome the shortcomings of existing technologies. Summary of the Invention

[0007] To address the problems of existing oxygen supply terminals in high-altitude and other low-pressure environments, such as difficulty in automatically compensating for oxygen supply flow with ambient air pressure, low humidification efficiency, uncontrollable output droplet size, and lack of water level and environmental parameter monitoring, this invention provides a desktop ultrasonic micro-mist terminal with coordinated adaptive adjustment of oxygen supply and humidification. This enables coordinated adaptive adjustment of oxygen supply and humidification intensity, improving the safety and comfort of oxygen inhalation in high-altitude environments.

[0008] This invention is achieved through the following technical solution: A desktop ultrasonic micro-mist terminal with coordinated adaptive regulation of oxygen supply and humidification includes: a shell, a humidification component, and a monitoring and control component. The shell has an oxygen inlet connected to an oxygen generator. The humidification component includes a water tank and a porous distributor and an ultrasonic microporous atomizing plate disposed in the water tank. The water tank is disposed inside the shell. The oxygen inlet is connected to the porous distributor through an air inlet pipe. An oxygen flow control valve and an oxygen flow sensor are disposed on the air inlet pipe. The ultrasonic microporous atomizing plate is disposed at the bottom of the water tank. The water tank is also equipped with an oxygen outlet pipe, one end of which is connected to the inside of the water tank and the other end is connected to the air outlet. The monitoring and control components include an ambient temperature and humidity sensor, an air pressure sensor, an oxygen concentration sensor, a display module, an alarm light, and a controller. The ambient temperature and humidity sensor, air pressure sensor, oxygen concentration sensor, oxygen flow sensor, and electrode-type liquid level sensor are all electrically connected to the controller. The controller is also electrically connected to the oxygen flow control valve, the drive circuit of the ultrasonic microporous atomizing plate, the display module, and the alarm light.

[0009] Preferably, the controller adjusts the target oxygen supply flow rate and the opening degree of the oxygen flow control valve according to the correspondence between the ambient air pressure and the target oxygen supply flow rate.

[0010] Preferably, the controller performs graded control on the ultrasonic microporous ceramic atomizing plate based on the relative humidity detected by the ambient temperature and humidity sensor: when the relative humidity is higher than 60%, the ultrasonic microporous ceramic atomizing plate is turned off; when the relative humidity is lower than 30%, the ultrasonic microporous ceramic atomizing plate is turned on; and when the relative humidity is between 30% and 60%, the ultrasonic microporous ceramic atomizing plate operates intermittently.

[0011] Preferably, the porous distributor adopts a porous ceramic structure, including an open frame and a porous ceramic plate. An installation groove is opened in the inner wall of the frame, and the porous ceramic plate is suspended through the installation groove to form a cavity with the bottom of the frame. The end of the air inlet pipe extends into the cavity through the porous ceramic plate.

[0012] Preferably, a maximum water level mark is set on the side wall of the water tank, and the inlet of the oxygen outlet pipe is higher than the maximum water level mark.

[0013] Preferably, the water tank is made of transparent or semi-transparent material or has an external observation window on the outer shell opposite to the water tank.

[0014] Preferably, a filter screen is installed at the inlet of the oxygen outlet pipe.

[0015] Preferably, the control method of the terminal includes: The system uses a pressure sensor to collect ambient air pressure in real time and send it to the controller. The controller calculates the target oxygen supply flow rate based on the preset pressure-flow rate correspondence. The oxygen flow control valve makes the output oxygen flow rate reach the target value, and combines the feedback from the oxygen flow sensor to achieve closed-loop correction. The relative humidity is collected by an ambient temperature and humidity sensor and sent to the controller. The controller controls the opening, closing and intermittent operation of the ultrasonic microporous atomizing plate according to the humidity range. The water level in the tank is detected by an electrode-type liquid level sensor. When there is a water shortage, the ultrasonic microporous atomizing plate is shut off and an alarm signal is issued. The display module shows the ambient temperature, relative humidity, oxygen concentration, ambient air pressure, and current working mode in real time, enabling visual management of oxygen supply and humidification status.

[0016] Preferably, the controller converts the current air pressure P into a target oxygen supply flow rate Q* based on a pre-stored pressure-flow rate correlation or lookup table data. This correlation can be established according to the suitable oxygen concentration range for people at different altitudes. When a decrease in ambient air pressure is detected, the controller automatically increases the target oxygen supply flow rate.

[0017] Preferably, the controller obtains the RH value from the ambient metal filter: when RH When the RH reaches 60%, the environment is deemed too humid, and the controller shuts off the ultrasonic microporous atomizing plate; when RH... At 30%, the environment is deemed relatively dry, and the controller activates the ultrasonic microporous atomizing plate and keeps it operating continuously to provide high-intensity humidification; when 30%... RH At 60%, the controller adopts an intermittent working mode, and the ultrasonic microporous atomizing plate is set to work for 5 minutes and stop for 5 minutes to provide a medium humidification intensity.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The purpose of this invention is to overcome the shortcomings of existing oxygen supply terminals in high-altitude and low-pressure environments, such as the lack of automatic compensation for oxygen supply flow with air pressure, passive and difficult-to-fine adjustment of humidification intensity, single sensing parameters, and difficulty in forming a stable oxygen-rich and humidified microenvironment in the user's breathing area. This invention provides a desktop ultrasonic micro-mist terminal with coordinated adaptive regulation of oxygen supply and humidification. By integrating an air pressure sensor, an oxygen flow control valve, and an oxygen flow sensor into the desktop terminal, a correspondence between ambient air pressure and the target oxygen supply flow is established, forming a closed-loop regulation circuit. This enables automatic compensation of oxygen supply flow with changes in ambient air pressure, ensuring a stable and reliable amount of oxygen actually inhaled by the user under different altitudes and air pressures.

[0019] The system utilizes a porous distributor at the bottom of the water tank to disperse oxygen into numerous tiny bubbles that pass through the ultrasonic atomization zone. This significantly increases the gas-liquid contact area and optimizes droplet entrainment, resulting in output droplet sizes concentrated in the micrometer range and reducing the risk of condensation and back-drip. The control method incorporates an environmental pressure sensor and a correlation with the target oxygen supply flow rate, enabling adaptive adjustment of the oxygen supply flow rate according to changes in altitude pressure, thus avoiding the problem of insufficient oxygen supply in low-pressure environments common with traditional equipment. Furthermore, a transparent water tank and electrode-type liquid level sensor provide visibility of the water level and water shortage protection. Online monitoring of environmental temperature, humidity, oxygen concentration, and air pressure, along with multi-level humidification control, enables refined management of the oxygen supply and humidification process. Timely alarms are issued in case of water shortage or operational abnormalities, ensuring the safety and stability of the equipment during long-term operation in high-altitude and low-pressure environments. The compact overall structure makes it suitable for use as a desktop humidification oxygen supply terminal in high-altitude scenarios.

[0020] In summary, this invention achieves coordinated and adaptive adjustment of oxygen supply, humidification intensity, and jet airflow parameters within a single desktop terminal, creating a safe, stable, and oxygen-rich humid local microenvironment near the user's head in high-altitude and other low-pressure environments, thereby improving physiological effectiveness and comfort during long-term or intermittent oxygen inhalation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a desktop ultrasonic micro-mist terminal with coordinated adaptive regulation of oxygen supply and humidification according to the present invention. Figure 2 This is a schematic diagram of a porous distributor in a desktop ultrasonic micro-mist terminal with coordinated adaptive regulation of oxygen supply and humidification according to the present invention. Figure 3 This is a schematic diagram of the ultrasonic microporous atomizing plate in a desktop ultrasonic micro-mist terminal with oxygen supply-humidification synergistic adaptive adjustment according to the present invention. Figure 4 This is a schematic diagram of the oxygen flow control method in this invention; Figure 5 This is a schematic diagram of the humidification module control method in this invention.

[0022] In the diagram: 1. Water inlet; 2. Oxygen inlet; 3. Controller; 4. Housing; 5. Water tank; 6. Liquid level sensor; 7. Ultrasonic microporous atomizing plate; 8. Air pressure sensor; 9. Temperature and humidity sensor; 10. Oxygen concentration sensor; 11. Observation window; 12. Porous distributor; 13. Filter screen; 14. Alarm light; 15. Display screen; 16. Oxygen outlet pipe; 17. Flexible hose; 18. Oxygen flow sensor; 19. Oxygen flow control valve; 20. Air inlet pipe; 21. Porous ceramic plate; 22. Frame; 23. Electrode frame; 24. Microporous surface; 25. Electrode. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to specific embodiments. These descriptions are for explanation purposes only and are not intended to limit the scope of the invention.

[0024] To address the problems of existing oxygen supply terminals in high-altitude and other low-pressure environments, such as the lack of automatic pressure compensation for oxygen supply flow rate (relying solely on manual adjustment), limited gas-liquid contact area and low humidification efficiency due to large air bubbles passing through the humidification bottle, insufficient coupling between ultrasonic atomization and airflow resulting in uneven droplet size distribution and easy condensation, as well as the lack of water level monitoring and water shortage protection, and the inability to visualize ambient temperature, humidity, and oxygen concentration, this invention discloses a desktop ultrasonic micro-mist terminal with coordinated adaptive adjustment of oxygen supply and humidification. Figures 1-5 The device includes a housing 4, a humidification component, and a monitoring and control component. The housing 4 has an oxygen inlet 2 connected to the oxygen generator. In one embodiment, the housing 4 has a rectangular structure, suitable for placement on a desktop. The top has the oxygen inlet 2 and an air outlet connector. The front panel has a display screen 15 and operation buttons. Internally, from front to back, the controller 3, power drive module, and water tank 5 are arranged sequentially, making the overall structure compact. The housing 4 also has a water inlet 1, connected to an external water supply device, for replenishing water to the water tank 5.

[0025] The humidification assembly includes a water tank 5, a porous distributor 12 disposed within the water tank 5, and an ultrasonic microporous atomizing plate 7. The water tank 5 is located inside the outer casing 4. The oxygen inlet 2 is connected to the porous distributor 12 via an air inlet pipe 20. An oxygen flow control valve 19 and an oxygen flow sensor 18 are disposed on the air inlet pipe 20. The ultrasonic microporous atomizing plate 7 (e.g., Figure 3 As shown, the electrode (23), electrode 25, and microporous surface 24 are disposed at the bottom of the water tank 5. By setting up a composite humidification component including a porous distributor 12 and an ultrasonic microporous atomizing plate 7, and combining it with a temperature and humidity sensor 9 to control the relative humidity of the environment in stages, oxygen is able to fully contact the water in the form of a large number of fine bubbles, while carrying fine droplets with a mass particle size of less than 5μm. This achieves enhanced gas-liquid mass transfer and controllable droplet size output, thereby improving humidification efficiency and comfort while avoiding pipeline condensation and over-humidification.

[0026] In one embodiment, the oxygen flow control valve 19 is preferably an electrically controlled proportional valve, which can continuously change the channel opening; the signal output terminal of the oxygen flow sensor 18 is electrically connected to the controller 3, and the oxygen flow sensor 18 is used to detect the oxygen flow rate entering the equipment in real time.

[0027] The water tank 5 is also equipped with an oxygen outlet pipe 16. One end of the oxygen outlet pipe 16 connects to the interior of the water tank 5, and the other end connects to the air outlet. A maximum water level mark is set on the side wall of the water tank 5, and the inlet of the oxygen outlet pipe 16 is higher than the maximum water level mark. Specifically, the inlet opening of the oxygen outlet pipe 16 is located in the upper space inside the water tank 5, and is about 3 cm higher than the maximum water level mark, to prevent liquid from directly entering the pipe when the water tank 5 shakes.

[0028] The oxygen outlet pipe 16 passes through the outer casing 4 and connects to the air outlet at the top. A fine-pore metal filter screen 13 is fixedly installed at the inlet of the oxygen outlet pipe 16. The filter screen 13 preferably has a pore size of 1mm to trap larger droplets formed after the rising air bubbles burst, allowing only humidified oxygen carrying fine mist droplets to pass through. The air outlet is connected to a flexible hose 17. The direction and opening of the air outlet can be adjusted by rotating or moving the flexible hose 17 to adapt to different usage postures and distances.

[0029] The porous distributor 12 is fixed to the bottom of the water tank 5 to form a uniform bubble flow field. Specifically, the porous distributor 12 adopts a porous ceramic structure, including an open frame 22 and a porous ceramic plate 21. An installation groove is formed on the inner wall of the frame 22, and the porous ceramic plate 21 is suspended through the installation groove, forming a cavity with the bottom of the frame 22. The end of the air inlet pipe 20 extends through the porous ceramic plate 21 into the cavity. In one embodiment, one end of the air inlet pipe 20 is connected to the outlet of the oxygen flow sensor 18, and the other end extends downward through the upper or side wall of the water tank 5, with the end inserted below the working liquid surface of the water tank 5 and connected to the porous distributor 12. The porous distributor 12 is preferably a porous ceramic umbrella-shaped component with numerous small pores, each with a diameter of approximately 2.0 mm. The depth to which the end of the air inlet pipe 20 is inserted into the water is preferably 1–2 cm from the bottom of the liquid surface, allowing the oxygen entering the water to escape from the distributor at multiple points in the form of numerous fine bubbles, fully contacting the water during its ascent.

[0030] The water tank 5 is made of transparent or semi-transparent material, or an external observation window 11 is opened on the outer casing 4 opposite to the water tank 5, so as to observe the water level and the position of the device from the outside. The ultrasonic microporous atomizing plate 7 is fixedly installed adjacent to the porous distributor 12, and its driving circuit is connected to the controller 3.

[0031] An electrode-type liquid level sensor 6 is installed on the side wall of the water tank 5, with the probe height corresponding to the water shortage alarm level, and is electrically connected to the controller 3 via a wire.

[0032] The monitoring and control components include an ambient temperature and humidity sensor 9, an air pressure sensor 8, an oxygen concentration sensor 10, a display screen module 15, an alarm light 14, and a controller 3. The ambient temperature and humidity sensor 9, air pressure sensor 8, oxygen concentration sensor 10, oxygen flow sensor 18, and electrode-type liquid level sensor 6 are all electrically connected to the controller 3. The controller 3 is also electrically connected to the oxygen flow control valve 19, the drive circuit of the ultrasonic microporous atomizing sheet 7, the display screen module 15, and the alarm light 14. In one embodiment, the temperature and humidity sensor 9 and the oxygen concentration sensor 10 are preferably located near the outlet of the oxygen outlet pipe 16 or near the air vent to reflect the temperature, humidity, and oxygen concentration in the area near the human body. The air pressure sensor 8 is located inside the side wall of the housing 4 to collect ambient air pressure. The display screen module 15 is located on the front panel and displays information such as ambient temperature, relative humidity, ambient air pressure, outlet oxygen concentration, current oxygen supply flow rate, and operating mode. The alarm light 14 includes a buzzer and an indicator light, fixed in an appropriate position inside the housing 4. All the above sensors and actuators are electrically connected to the controller 3 via wires. The controller 3 uses a microcontroller, which stores the oxygen supply control program and parameter table.

[0033] The controller 3 adjusts the target oxygen supply flow rate and the opening degree of the oxygen flow control valve 19 according to the correspondence between the ambient air pressure and the target oxygen supply flow rate. The controller 3 performs graded control on the ultrasonic microporous atomizing plate 7 based on the relative humidity detected by the ambient temperature and humidity sensor 9: when the relative humidity is higher than 60%, the ultrasonic microporous ceramic atomizing plate is turned off; when the relative humidity is lower than 30%, the ultrasonic microporous ceramic atomizing plate is turned on; and when the relative humidity is between 30% and 60%, the ultrasonic microporous ceramic atomizing plate operates intermittently.

[0034] This invention relates to a desktop ultrasonic micro-mist terminal with coordinated adaptive regulation of oxygen supply and humidification, primarily used in fixed locations such as bedside or desktops. It humidifies and regulates oxygen from an oxygen concentrator or central oxygen supply system before directing it to the user's breathing area, for long-term home or clinical auxiliary oxygen supply in high-altitude and low-pressure environments. The terminal's workflow is as follows: During use, the user connects the oxygen outlet of an external oxygen concentrator to the oxygen inlet 2 via hose 17, turns on the oxygen concentrator, and starts the device. The oxygen-enriched gas output from the oxygen concentrator enters the device through the oxygen inlet 2, first undergoes throttling regulation via the oxygen flow control valve 19, then the flow rate is measured by the oxygen flow sensor 18, and subsequently enters the air inlet pipe 20 and is injected into the water tank 5 at multiple points by the multi-hole distributor 12. Numerous tiny air bubbles rise slowly from bottom to top in the water, increasing the contact area and contact time with the water.

[0035] When the controller 3 activates the ultrasonic microporous ceramic atomizing plate according to humidity requirements, the atomizing plate operates at a set frequency, atomizing the water into fine droplets with a mass particle size of less than 5μm, forming a high-concentration mist cloud at the top of the water tank 5. Simultaneously, some droplets are entrained by rising air bubbles. After the bubbles burst near the water surface, a large number of fine droplets, carrying oxygen, mix with the unsaturated oxygen in the upper space, forming a uniform and delicate humidified oxygen-enriched flow. This humidified oxygen-enriched flow is collected by the oxygen outlet pipe 16. When passing through the fine-pore metal filter 13 at the outlet, larger droplets are trapped, and the airflow mainly carries micron-sized droplets, which are finally delivered to the user's mouth and nose through a miniature adjustable air outlet with a flexible hose support 17.

[0036] This invention discloses a control method for a desktop ultrasonic micro-mist terminal with coordinated adaptive regulation of oxygen supply and humidification. The method automatically adjusts the target oxygen supply flow rate based on ambient air pressure and intelligently controls the ultrasonic atomization operation based on ambient humidity. Simultaneously, it enhances gas-liquid mass transfer through a porous distributor 12 and implements water level detection and audible / visual alarms. This achieves safe, stable, and comfortable humidified oxygen supply in high-altitude environments. Specifically, the method includes: A pressure sensor 8 collects ambient air pressure in real time and sends it to the controller 3. The controller 3 calculates the target oxygen supply flow rate based on a preset pressure-flow rate correlation. The oxygen flow control valve 19 ensures that the output oxygen flow rate reaches the target value, and closed-loop correction is achieved by combining feedback from the oxygen flow sensor 18. Specifically, the controller 3 converts the current air pressure P into the target oxygen supply flow rate Q* based on the pre-stored pressure-flow rate correlation or lookup table data. This correlation can be established according to the suitable oxygen concentration range for people at different altitudes. When a decrease in ambient air pressure is detected, the controller 3 automatically increases the target oxygen supply flow rate. In practice, the controller 3 compares the target oxygen supply flow rate Q* with the actual flow rate Q measured by the oxygen flow sensor 18. When the relative error between the two exceeds the set threshold, the controller 3 outputs a PWM signal or a step pulse signal to the drive circuit of the oxygen flow control valve 19 to adjust its opening. Through multiple iterations, the actual flow rate Q gradually approaches the target oxygen supply flow rate Q*.

[0037] The control of humidification intensity adopts a tiered strategy based on relative humidity, see appendix. Figure 5 The ambient temperature and humidity sensor 9 collects relative humidity data and transmits it to the controller 3. The controller 3 controls the opening, closing, and intermittent operation of the ultrasonic microporous atomizing plate 7 according to the humidity range. Specifically, the controller 3 obtains the RH value from the ambient metal filter 13: when the RH... When the RH reaches 60%, the environment is determined to be relatively humid, and controller 3 shuts off the ultrasonic microporous atomizing plate 7; when RH... At 30%, the environment is determined to be relatively dry, and controller 3 activates the ultrasonic microporous atomizing plate 7 and keeps it working continuously to provide high-intensity humidification; when 30%... RH At 60%, controller 3 operates in intermittent mode, and the ultrasonic microporous atomizing plate 7 is set to work for 5 minutes and then stop for 5 minutes to provide moderate humidification intensity, avoiding over-humidification or over-drying. The intermittent cycle can be set via buttons and is displayed on display module 15.

[0038] Regarding water level and safety protection, an electrode-type liquid level sensor 6 detects the water level in the water tank 5. When water is insufficient, the ultrasonic atomization is shut off and an alarm signal is issued. Specifically, when the water level is above electrode 25, the sensor outputs a conduction signal, and the controller 3 determines that the water level is sufficient. When the water level drops below electrode 25, the sensor outputs a disconnection signal, and the controller 3 determines that the water is insufficient, immediately shutting off the ultrasonic microporous atomizing plate 7 to prevent dry burning. Simultaneously, the alarm light 14 emits an intermittent buzzing and flashing warning, and a "Water Shortage" message is displayed on the display module 15, reminding the user to add water. After the user adds water above electrode 25, the controller 3 automatically resumes the atomization function.

[0039] To facilitate user understanding of equipment operating status, controller 3 periodically refreshes the display module 15 interface, displaying at least the following information: ambient temperature T, relative humidity RH, ambient air pressure P, current oxygen supply flow rate Q, and humidification mode (high / intermittent / low). The display module 15 provides real-time display of ambient temperature, relative humidity, oxygen concentration, ambient air pressure, and current operating mode, enabling visualized management of oxygen supply and humidification status.

[0040] The specifications and installation methods of the components described above are merely preferred examples. Those skilled in the art can adjust the dimensions of the housing 4, the volume of the water tank 5, the structure of the distributed air intake distributor (such as spherical, multi-ring, or nozzle array), the rated power and frequency of the ultrasonic microporous ceramic atomizing plate, the humidity threshold, and the intermittent cycle according to the usage scenario; as long as it does not exceed the scope defined by the claims of this invention, it should be considered to fall within the protection scope of this invention.

[0041] This invention integrates a pressure sensor 8, an oxygen flow control valve 19, and an oxygen flow sensor 18 into the terminal, and presets the correspondence between ambient air pressure and target oxygen supply flow rate in the controller 3. This forms a closed-loop control chain of "pressure detection—target flow rate calculation, valve adjustment, and flow feedback correction," enabling automatic compensation of oxygen supply flow rate as ambient air pressure changes. This solves the problem of existing equipment that only sets the apparent flow rate and cannot guarantee consistent actual oxygen intake under different air pressures. The pressure sensor 8 collects ambient air pressure in real time, and the controller 3 automatically adjusts the opening of the oxygen flow control valve 19 according to the preset "pressure—target oxygen supply flow rate" correspondence. Combined with the closed-loop correction of the oxygen flow sensor 18, the actual oxygen flow rate gradually approaches the target value. This ensures that the user's actual oxygen intake remains within a suitable range even when ambient air pressure changes significantly. This helps avoid the situation of "apparent flow rate meeting the standard but effective oxygen partial pressure insufficient" in high-altitude areas, improving the physiological effectiveness and stability of long-term or intermittent oxygen inhalation.

[0042] This invention utilizes a porous ceramic distributor at the bottom of water tank 5 to disperse incoming oxygen into numerous tiny bubbles, which slowly pass through the water from bottom to top, significantly increasing the gas-liquid contact area and contact time. Simultaneously, an ultrasonic microporous ceramic atomizing plate is used to atomize the water into fine droplets with a mass particle size of less than 5μm when needed, forming a stable micro-mist layer on the upper part of water tank 5. This creates a structure of "bubble humidification and micro-mist superposition," which, compared to traditional single-bubble humidification bottles, achieves higher humidification efficiency and more uniform humidification under conditions of smaller liquid levels and limited water volume. This helps alleviate discomfort such as airway dryness and throat irritation.

[0043] This invention incorporates a fine-pore metal filter 13 at the inlet of the oxygen outlet pipe 16, ensuring that the airflow primarily carries micron-sized droplets, while larger droplets are trapped within the water tank 5, preventing them from entering the air outlet channel and nasal cannula. Compared to the prior art, which suffers from coarse droplet size and easy condensation within the pipes and nasal cannula, this invention, through a combined atomization-screening design, physically limits the droplet size distribution, helping to reduce the risks of water accumulation in the pipes, condensation backflow, and cannula blockage, thus improving both safety and user comfort.

[0044] This invention uses an ambient temperature and humidity sensor 9 to monitor relative humidity in real time, dividing the ambient humidity into dry, suitable, and slightly humid zones. Corresponding ultrasonic atomization operating modes (off / intermittent / continuous) are set in the controller 3, enabling automatic start / stop and duty cycle adjustment of the ultrasonic atomizing plate according to the humidity range. This transforms the humidification intensity from a "passive result" to a finely settable control quantity, ensuring effective humidification while avoiding over-humidification and condensation under different ambient humidity levels. By using the ambient temperature and humidity sensor 9 to obtain relative humidity, the controller 3 implements a graded control strategy based on the humidity range. This ensures that the humidification intensity better matches the actual environmental conditions and human needs, reducing discomfort caused by excessive dryness or humidity. Furthermore, it avoids unnecessary long-term operation of the ultrasonic atomizer, reducing water and energy consumption and improving the equipment's economy and operating efficiency.

[0045] This invention compactly arranges the air intake component, composite humidification component, monitoring and control component, and air outlet component in a desktop housing 4 according to the airflow direction and height sequence. It can be used by simply connecting an external oxygen generator outlet and an adjustable air outlet pipe. This highly integrates oxygen supply, humidification, sensing, and control into a single desktop terminal, thereby facilitating the creation of a stable and controllable oxygen-rich and humidified local microenvironment near the user's head, which is different from existing decentralized humidification bottles or simple pipeline humidification accessories.

[0046] This invention integrates an electrode-type liquid level sensor 6, an alarm light 14, and a display screen 15. When the water level falls below a set threshold, it automatically shuts off ultrasonic atomization and issues an audible and visual alarm, displaying "low water" information on the display screen 15. The water tank 5 is made of transparent / semi-transparent material or has an external observation window 11, along with a maximum water level indicator line, allowing users to intuitively assess the water replenishment status. Compared to traditional humidification bottles that lack water level detection and active protection, this invention effectively avoids the risks of dry burning and idling of the atomizing plate, significantly improving overall safety and maintainability.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the technical solution of the present invention in any way. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can be modified and replaced in several simple ways, and these modifications and replacements are all within the scope of protection covered by the claims.

Claims

1. A desktop ultrasonic micro-mist terminal with coordinated adaptive regulation of oxygen supply and humidification, characterized in that, include: The outer shell (4), humidification components and monitoring and control components are provided. The outer shell (4) has an oxygen inlet (2) connected to the oxygen generator. The humidification components include a water tank (5) and a porous distributor (12) and an ultrasonic microporous atomizing plate (7) installed in the water tank (5). The water tank (5) is located inside the outer shell (4). The oxygen inlet (2) is connected to the porous distributor (12) through an air inlet pipe (20). An oxygen flow control valve (19) and an oxygen flow sensor (18) are installed on the air inlet pipe (20). The ultrasonic microporous atomizing plate (7) is located at the bottom of the water tank (5). The water tank (5) is also equipped with an oxygen outlet pipe (16), one end of which is connected to the inside of the water tank (5), and the other end is connected to the air outlet. The monitoring and control components include an ambient temperature and humidity sensor (9), an air pressure sensor (8), an oxygen concentration sensor (10), a display screen (15) module, an alarm light (14), and a controller (3). The ambient temperature and humidity sensor (9), the air pressure sensor (8), the oxygen concentration sensor (10), the oxygen flow sensor (18), and the electrode-type liquid level sensor (6) are all electrically connected to the controller (3). The controller (3) is also electrically connected to the oxygen flow control valve (19), the drive circuit of the ultrasonic microporous atomizing plate (7), the display screen (15) module, and the alarm light (14), respectively. The porous distributor (12) adopts a porous ceramic structure, including an open frame (22) and a porous ceramic plate (21). The inner wall of the frame (22) is provided with an installation groove. The porous ceramic plate (21) is suspended through the installation groove and forms a cavity with the bottom of the frame (22). The end of the air inlet pipe (20) extends into the cavity through the porous ceramic plate (21). The controller (3) adjusts the target oxygen supply flow and the opening of the oxygen flow control valve (19) according to the correspondence between the ambient air pressure and the target oxygen supply flow; The controller (3) performs graded control on the ultrasonic microporous atomizing plate (7) based on the relative humidity detected by the ambient temperature and humidity sensor (9): when the relative humidity is higher than 60%, the ultrasonic microporous ceramic atomizing plate is turned off; when the relative humidity is lower than 30%, the ultrasonic microporous ceramic atomizing plate is turned on; when the relative humidity is between 30% and 60%, the ultrasonic microporous ceramic atomizing plate is made to work intermittently. A filter (13) is installed at the inlet of the oxygen outlet pipe (16); the controller (3) obtains the RH value from the environmental metal filter (13): when the RH When the RH reaches 60%, the environment is considered relatively humid, and the controller (3) shuts off the ultrasonic microporous atomizing plate (7); when RH... At 30%, the environment is considered relatively dry, and the controller (3) activates the ultrasonic microporous atomizing plate (7) and keeps it working continuously to provide high-intensity humidification; when 30%... RH At 60%, the controller (3) adopts an intermittent working mode, and the ultrasonic microporous atomizing plate (7) is set to work for 5 minutes and stop for 5 minutes to provide a medium humidification intensity.

2. The desktop ultrasonic micro-mist terminal with coordinated oxygen supply and humidification adaptive adjustment according to claim 1, characterized in that, The side wall of the water tank (5) is marked with the highest water level mark, and the inlet of the oxygen outlet pipe (16) is higher than the highest water level mark.

3. The desktop ultrasonic micro-mist terminal with coordinated oxygen supply and humidification adaptive adjustment according to claim 1, characterized in that, The water tank (5) is made of transparent or semi-transparent material or has an external observation window (11) on the outer shell (4) opposite to the water tank (5).

4. The desktop ultrasonic micro-mist terminal with coordinated oxygen supply and humidification adaptive adjustment according to claim 1, characterized in that, The control methods for this terminal include: The ambient air pressure is collected in real time by the air pressure sensor (8) and sent to the controller (3); the controller (3) calculates the target oxygen supply flow rate according to the preset air pressure-flow rate correspondence, and the oxygen flow control valve (19) makes the output oxygen flow rate reach the target value, and realizes closed-loop correction by combining the feedback of the oxygen flow sensor (18). The relative humidity is collected by the ambient temperature and humidity sensor (9) and sent to the controller (3). The controller (3) controls the opening, closing and intermittent operation of the ultrasonic microporous atomizing sheet (7) according to the humidity range. The water level in the water tank (5) is detected by an electrode-type liquid level sensor (6). When there is a water shortage, the ultrasonic microporous atomizing plate (7) is shut off and an alarm signal is issued. The display screen (15) module displays the ambient temperature, relative humidity, oxygen concentration, ambient air pressure and current working mode in real time, enabling visual management of oxygen supply and humidification status.

5. The desktop ultrasonic micro-mist terminal with coordinated oxygen supply and humidification adaptive adjustment according to claim 1, characterized in that, The controller (3) converts the current air pressure P into the target oxygen supply flow rate Q based on the pre-stored air pressure-flow rate correspondence or lookup table data. This relationship can be established based on the suitable oxygen concentration range for people at different altitudes; when the ambient air pressure is detected to be reduced, the controller (3) automatically increases the target oxygen supply flow.

Images