A novel herb atomization liquid atomization device and control method

Abstract

The present application belongs to the field of atomization equipment, and discloses a novel herbal atomization liquid atomization device and a control method. The device comprises a main shell, an upper shell, a liquid medicine bin, an atomization chamber and a controller, etc. The liquid outlet pipe is provided with coaxially stacked upper and lower piezoelectric ceramic rings, which together clamp a ceramic diaphragm. The upper piezoelectric ceramic ring is used for high-frequency vibration atomization, and the lower piezoelectric ceramic ring is used for low-frequency disturbance mixing. The side wall of the atomization channel is provided with an infrared absorption spectrum sensor. The control method comprises: S1, scanning frequency to identify the best atomization resonance frequency; S2, cyclic atomization according to time sequence, each cycle comprising a first period of high-frequency atomization, a second period of low-frequency disturbance and a third period of high-frequency atomization again; S3, monitoring the concentration through the infrared sensor, and automatically stopping after 5 seconds below the threshold. The present application realizes intelligent alternation of atomization and mixing through the cooperative work of the double piezoelectric ceramic rings, ensures uniform composition of the atomization liquid, and prevents precipitation.

Description

Technical Field

[0001] This invention relates to the field of atomization equipment, and in particular to a novel herbal atomization liquid atomization device and control method. Background Technology

[0002] Herbal nebulized drug delivery is one of the important methods for treating respiratory diseases. Compared with oral administration, it has the advantages of rapid onset of action, strong targeting, and few side effects. It is especially suitable for relieving and treating respiratory diseases such as cough, pharyngitis, and asthma.

[0003] Traditional nebulization, driven by a single fixed frequency, is prone to fractionation of low-boiling-point volatile components (such as menthol) and high-boiling-point components (such as glycyrrhizic acid) in herbal liquids. This results in only volatile components being output in the initial stage of nebulization ("clear first") and only high-boiling-point components being output in the later stage ("bitter later"). Ultimately, the proportion of aerosol components output deviates greatly from the original proportion of the liquid, affecting the therapeutic effect. Summary of the Invention

[0004] The present invention aims to provide a novel herbal atomizing liquid atomization device and control method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A novel herbal atomizing liquid atomizing device includes a main housing, an upper housing detachably connected to the main housing, a top cover threadedly connected to the upper housing, and a liquid storage chamber provided in the upper housing; The main housing is connected to a bracket, and the bracket is connected to an air chamber, an atomizing chamber, and a controller; The air chamber is equipped with an air pump and a proportional valve, and the air chamber is connected to an air inlet pipe, which is connected to the atomizing chamber. The liquid tank is connected to an outlet pipe, which is connected to the atomization chamber. The outlet pipe is equipped with an upper piezoelectric ceramic ring and a lower piezoelectric ceramic ring. The upper and lower piezoelectric ceramic rings are coaxially stacked and together clamp a ceramic diaphragm. The upper piezoelectric ceramic ring is used for high-frequency vibration atomization, and the lower piezoelectric ceramic ring is used for low-frequency perturbation mixing. The atomizing chamber is connected to an atomizing channel, the upper shell is connected to a connecting pipe, the atomizing channel is connected to the connecting pipe, and the connecting pipe is detachably connected to a mouthpiece; The upper piezoelectric ceramic ring, the lower piezoelectric ceramic ring, the infrared absorption spectroscopy sensor, the air pump, and the proportional valve are electrically connected to the controller.

[0006] Preferably, the sidewall of the atomizing channel is provided with an infrared absorption spectroscopy sensor.

[0007] Preferably, a one-way valve is provided inside the connecting pipe.

[0008] Preferably, the bracket is connected to a control button and a speaker, and the control button and speaker are electrically connected to the controller respectively.

[0009] Preferably, a first one-way valve is provided at the connection between the air inlet pipe and the atomizing chamber, and a second one-way valve is provided at the connection between the liquid outlet pipe and the atomizing chamber. The liquid storage chamber is used to store the herbal atomizing liquid, and the atomizing chamber is used to convert the herbal atomizing liquid into an aerosol. Both the first one-way valve and the second one-way valve are used to prevent the aerosol in the atomizing chamber from flowing back.

[0010] A control method for a novel herbal atomizing liquid atomizing device, characterized by comprising the following steps: S1. The user issues a start command through the control button. After the controller responds to the start command, it sends a sweep signal to the upward piezoelectric ceramic ring and simultaneously collects its drive current. During the sweep process, the controller identifies the maximum value of the drive current and locks the frequency corresponding to the maximum value as the optimal atomization resonance frequency of the current herbal atomizing liquid. S2. The controller atomizes the herbal atomizing liquid according to a preset time cycle at the optimal atomization resonance frequency obtained in S1. Each time cycle includes: In the first period, the upper piezoelectric ceramic ring is driven with the optimal atomization resonance frequency obtained in S1, so that the ceramic diaphragm vibrates at high frequency to atomize the herbal atomized liquid. In the second period, the lower piezoelectric ceramic ring is driven at a preset low-frequency disturbance frequency to cause the ceramic diaphragm to be disturbed at a low frequency, thereby disrupting the mixed herbal atomized liquid. In the third period, the upper piezoelectric ceramic ring is driven again at the optimal atomization resonance frequency obtained in S1, so that the ceramic diaphragm vibrates at high frequency to atomize the mixed herbal atomized liquid. S3. During the atomization process in S2, the concentration of aerosol is continuously monitored by the infrared absorption spectroscopy sensor to form a concentration-time curve. When the value of the concentration-time curve is continuously lower than the termination threshold for 5 seconds, the atomization is automatically determined to be complete, and the controller stops the operation, while driving the speaker to emit a prompt sound.

[0011] Preferably, in step S3, the method for setting the termination threshold includes: at the initial stage of atomization, the controller continuously collects data for 3 seconds through an infrared absorption spectroscopy sensor, takes the maximum value within this time period as the reference peak value, and sets the termination threshold to 40% of the reference peak value.

[0012] Preferably, step S2 further includes a dynamic adjustment step: After completing at least one time-series cycle, the concentration value C_n before the end of the third time period in the current cycle is obtained by the infrared absorption spectroscopy sensor. Compare \(C_n\) with the concentration value \(C_{n - 1}\) in the previous cycle; According to the comparison result, dynamically adjust the duration of the second period in the next cycle.

[0013] Preferably, the dynamic adjustment is specifically: If \(C_n<C_{n - 1}\), the duration of the second period in the next cycle is increased by 0.05 seconds; If \(C_n>C_{n - 1}\), the duration of the second period in the next cycle is decreased by 0.05 seconds; If the deviation between \(C_n\) and \(C_{n - 1}\) is within ±5%, the duration of the second period remains unchanged.

[0014] Preferably, the duration ratio of the first period to the second period is 3:1 to 5:1; wherein, the preset low-frequency disturbance frequency is 20 Hz.

[0015] The beneficial effects of this technical solution compared with the prior art: (1) In this solution, by setting upper and lower double piezoelectric ceramic rings stacked coaxially and配合 with the timing cycle mode of the first, second, and third periods, the component fractionation phenomenon naturally existing in the herbal atomization liquid is suppressed. When the upper piezoelectric ceramic ring atomizes at high frequency in the first period, due to the lower boiling point components being more easily atomized, the aerosol will naturally enrich the volatile components with lower boiling points and easy atomization; in the second period, the atomization pauses, and the lower piezoelectric ceramic ring drives the ceramic diaphragm to generate low-frequency disturbance, forming a vibration contrast with the just high frequency, performing forced convection mixing on the liquid medicine, and quickly restoring the liquid medicine to the original uniform ratio; in the third period, atomization is carried out again at high frequency, and an aerosol with uniform ratio and close to the original components of the liquid medicine is output. By quickly cycling the above timings, the component ratio of the finally output aerosol is kept consistent with the original ratio of the liquid medicine, fundamentally solving the problems of herbal liquid fractionation, "first clear and then bitter", and uneven components caused by the single fixed-frequency drive of the traditional atomizer, and ensuring the stability and reliability of the therapeutic components.

[0016] (2) By setting step S1, the problems of low atomization efficiency and poor adaptability caused by the viscosity and physical property differences of herbal liquids with different batches and different formulas are solved. The controller automatically locks the optimal atomization resonance frequency of the current liquid medicine by sending a sweep frequency signal to the piezoelectric ceramic and collecting the peak value of the driving current, replacing the traditional fixed-frequency drive. This design enables the device to adaptively identify and match the physical properties of any herbal liquid, ensuring that it is always in the highest atomization efficiency state throughout the atomization process, and effectively avoiding the problems of insufficient atomization or excessive droplet size caused by frequency mismatch.

[0017] (3) By setting up a closed-loop concentration control using an infrared absorption spectroscopy sensor and introducing a dynamic adjustment mechanism for the duration of the second time period, real-time and precise control of the atomization concentration is achieved. The controller automatically increases or decreases the duration of low-frequency disturbances by comparing the aerosol concentration values ​​of adjacent cycles. When there is a tendency for component fractionation, mixing is strengthened in a timely manner, and ineffective disturbances are reduced when the concentration is stable. This closed-loop logic of monitoring-comparison-adjustment enables the device to actively combat the dynamic stratification of the herbal liquid during the atomization process, further ensuring the uniformity of the output aerosol components and the stability of the concentration.

[0018] (4) By setting up an atomization endpoint determination mechanism based on infrared concentration detection, the problem of traditional timing or liquid level detection methods failing to identify wall residue, leading to drug waste or dry running is solved. The controller collects a baseline peak value for the first 3 seconds and sets a 40% termination threshold, using "concentration continuously below the threshold for 5 seconds" as the shutdown criterion. This mechanism can accurately identify whether the effective components in the liquid have been basically atomized, rather than simply judging whether the liquid level is empty. It maximizes the utilization of the liquid residue on the chamber and membrane, significantly improving drug utilization, while avoiding energy waste and device damage caused by ineffective idling.

[0019] (5) By setting up an airflow control system consisting of an air chamber, a proportional valve, and a one-way valve, efficient synchronous respiratory drug delivery is achieved, solving the problems of drug expulsion and low lung deposition rate in traditional continuous nebulization modes. The air pump and proportional valve can generate pulsed airflow, which can efficiently deliver aerosols during the inspiratory window and maintain only a small amount of basic airflow during the expiratory phase. This design significantly reduces drug waste and significantly improves the deposition efficiency of drugs deep in the lungs, making it particularly suitable for precise drug delivery in medical scenarios. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an exploded view of the structure provided by the present invention; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 A flowchart of the method provided by the present invention; Reference numerals: 1. Nozzle; 2. Connecting tube; 3. Top cover; 4. Main housing; 5. Control button; 6. Speaker; 7. Bracket; 8. Controller; 9. Atomizing chamber; 10. Air chamber; 11. Upper housing; 12. Liquid tank; 13. Atomizing channel; 14. Liquid outlet tube; 15. Lower piezoelectric ceramic ring; 16. Ceramic diaphragm; 17. Upper piezoelectric ceramic ring; 18. Air inlet tube. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: like Figure 1-4 The illustrated novel herbal atomizing liquid atomizing device includes a main housing 4, to which an upper housing 11 is detachably connected. The upper housing 11 and the main housing 4 are connected by a snap-fit ​​structure, which is existing technology and allows the upper housing 11 to be pulled out by force, and will not be described in detail here. The upper housing 11 is threadedly connected to a top cover 3 and has a liquid storage chamber 12 for storing the herbal atomizing liquid. The main housing 4 is connected to a bracket 7, which in turn connects to an air chamber 10, an atomizing chamber 9, and a controller 8. The air chamber 10 is equipped with an air pump and a proportional valve to provide and regulate the airflow required for atomization. The air chamber 10 is connected to an air inlet pipe 18, the other end of which is connected to the atomizing chamber 9 to introduce airflow into the atomizing chamber. The air pump is a diaphragm-type miniature vacuum pump, operating at 5V or 12V, with a flow rate range of 1-5L / min. The proportional valve is a Parker VSO MAX HP, with a maximum flow rate of 450SLPM, a response time of 10ms, and a power consumption of 2.0W.

[0022] The liquid reservoir 12 is connected to a liquid outlet pipe 14, the other end of which is connected to the top of the atomizing chamber 9 for delivering the herbal atomized liquid to the atomizing chamber 9. The liquid outlet pipe 14 is equipped with an upper piezoelectric ceramic ring 17 and a lower piezoelectric ceramic ring 15, which are coaxially stacked. A ceramic diaphragm 16 is sandwiched between the upper and lower piezoelectric ceramic rings 17 and 15. The upper piezoelectric ceramic ring 17 is used to generate high-frequency vibration, causing the ceramic diaphragm 16 to vibrate at high frequency. This atomizes the herbal atomized liquid; the lower piezoelectric ceramic ring 15 generates low-frequency disturbances, causing the ceramic diaphragm 16 to vibrate at low frequencies, thereby mixing and stirring the herbal atomized liquid and preventing component precipitation; the upper piezoelectric ceramic ring 17 and the lower piezoelectric ceramic ring 15 are model ATC16-0110SDW, which can achieve high-frequency vibration atomization and low-frequency disturbance mixing functions through the controller 8; the ceramic diaphragm 16 is a Bostar matching atomizing plate with a micron-level pore size and a 108kHz resonance.

[0023] The other end of the top of the atomizing chamber 9 is connected to an atomizing channel 13, which is used to transport the aerosol generated by atomization upward. The upper shell 11 is connected to a connecting pipe 2, and the atomizing channel 13 is connected to the connecting pipe 2. The connecting pipe 2 is detachably connected to a nozzle 1. The nozzle 1 and the connecting pipe 2 are connected by a plug-in snap-fit ​​structure. The plug-in snap-fit ​​structure is existing technology, and the nozzle 1 can be pulled out by force, which will not be described in detail here. The upper piezoelectric ceramic ring 17, the lower piezoelectric ceramic ring 15, the infrared absorption spectroscopy sensor, the air pump, and the proportional valve are electrically connected to the controller 8, and are coordinated by the controller 8.

[0024] An infrared absorption spectroscopy sensor is installed on the side wall of the atomization channel 13 to monitor the aerosol concentration flowing through the channel in real time. This sensor uses the principle of non-dispersive infrared absorption, calculating the aerosol concentration by detecting the attenuation of light intensity at a characteristic wavelength. The infrared absorption spectroscopy sensor is model GW-3000B / M, used for real-time monitoring of fog concentration, and its output signal is connected to the controller.

[0025] The connecting tube 2 is equipped with a one-way valve to prevent backflow when the user exhales.

[0026] The bracket 7 is connected to a control button 5 and a speaker 6, which are electrically connected to the controller 8. The control button 5 is used for the user to turn the device on and off, and the speaker 6 is used to emit a prompt sound when atomization is complete.

[0027] A first one-way valve is provided at the connection between the air inlet pipe 18 and the atomizing chamber 9, and a second one-way valve is provided at the connection between the liquid outlet pipe 14 and the atomizing chamber 9. The medicine tank 12 is used to store the herbal atomizing liquid, and the atomizing chamber 9 is used to convert the herbal atomizing liquid into aerosol. Both the first one-way valve and the second one-way valve are used to prevent the aerosol in the atomizing chamber 9 from flowing back into the air chamber or the medicine tank, so as to ensure atomization efficiency and prevent contamination.

[0028] A control method for a novel herbal atomizing liquid atomizing device, characterized by comprising the following steps: Before use, open the medicine chamber 12 by twisting the top cover 3 and inject the herbal atomizing liquid. After injection, twist the top cover 3 in the opposite direction to close it. Then perform the following operations.

[0029] S1. The user issues a start command via control button 5. After responding to the start command, controller 8 sends a sweep signal to the upward piezoelectric ceramic ring 17 and simultaneously collects its drive current. The sweep process lasts approximately 1-3 seconds. During the sweep process, the controller collects drive current data every 10 milliseconds. The controller 8 identifies the maximum value of the drive current during the sweep process, indicating that the mechanical vibration amplitude of the ceramic diaphragm 16 is the largest and the atomization efficiency is the highest. The controller then locks the frequency corresponding to this maximum value as the optimal atomization resonant frequency for the current herbal atomizing liquid. It should be noted that different batches and different ingredients of herbal atomizing solutions may have different optimal atomization resonant frequencies due to differences in viscosity and density. This step achieves automatic adaptation for each solution through real-time frequency scanning, eliminating the need for manual adjustment by the user.

[0030] S2, Controller 8 atomizes the herbal atomizing liquid according to the optimal atomization resonance frequency obtained in S1 and a preset time cycle. Each time cycle includes three consecutive and uninterrupted time periods: In the first period, the upper piezoelectric ceramic ring 17 is driven at the optimal atomization resonance frequency obtained in S1, causing the ceramic diaphragm 16 to vibrate at a high frequency, breaking the herbal atomization liquid in contact with the diaphragm into micron-sized droplets to form an aerosol. This period is mainly responsible for producing the aerosol; In the second period, the lower piezoelectric ceramic ring 15 is driven at a preset low-frequency disturbance frequency, causing the ceramic diaphragm 16 to undergo low-frequency disturbance. This low-frequency vibration is transmitted through the liquid outlet pipe 14 to the herbal atomization liquid in the liquid medicine tank 12, causing macroscopic flow and disturbance of the liquid, thereby remixing the potentially precipitated active ingredients evenly; where the preset low-frequency disturbance frequency is 20 Hz.

[0031] In the third period, the upper piezoelectric ceramic ring 17 is driven again at the optimal atomization resonance frequency obtained in S1, causing the ceramic diaphragm 16 to vibrate at a high frequency. At this time, the atomized liquid medicine is the one that has been mixed evenly in the second period, thus ensuring that the aerosol components output in each puff are consistent; Among them, the driving waveform of the upper piezoelectric ceramic ring is a sine wave, and the driving voltage is 24V - 48V; The duration ratio of the first period to the second period is 3:1 to 5:1; in this embodiment, the duration of the first period is 0.3 seconds, the duration of the second period is 0.1 seconds, and the duration of the third period is 0.3 seconds. A complete cycle is 0.7 seconds. This parameter gives sufficient mixing time while ensuring a continuous smoking experience.

[0032] It also includes a dynamic adjustment step: During the atomization process in S2, the infrared absorption spectroscopy sensor continuously monitors the aerosol concentration in the atomization channel 13, forming a real-time concentration-time curve. The controller makes dynamic adjustments based on the concentration changes: After completing at least one timing cycle, the average concentration value C_n within 0.1 seconds before the end of the third period in the current cycle is obtained through the controller 8 and by the infrared absorption spectroscopy sensor; at the same time, the average concentration value C_{n - 1} in the same period of the previous cycle is retrieved, and the two are compared: Based on the comparison result, the duration of the second period in the next cycle is dynamically adjusted; where the dynamic adjustment is specifically: If C_n < C_{n - 1}, it indicates that the concentration is on a downward trend, which may be due to insufficient mixing of the liquid medicine resulting in insufficient supply of active ingredients. At this time, the controller increases the duration of the second period in the next cycle by 0.05 seconds to enhance the mixing effect; If C_n > C_{n - 1}, it indicates that the concentration is on an upward trend, which may mean that the mixing is already sufficient. At this time, the controller reduces the duration of the second period in the next cycle by 0.05 seconds to recover more time for atomization output; If the deviation between C_n and C_{n - 1} is within ±5%, it indicates that the concentration is stable, and the duration of the second period remains unchanged.

[0033] Through this closed-loop feedback control, the device can adapt to the mixing requirements of different drug solutions and always maintain a stable atomization concentration.

[0034] S3. During the atomization process in S2, the concentration of the aerosol is continuously monitored by an infrared absorption spectroscopy sensor, forming a concentration-time curve. As the liquid medicine is gradually depleted, the concentration will continue to decrease. When the value of the concentration-time curve remains below the termination threshold for 5 seconds, the controller 8 determines that the liquid medicine has been basically atomized and the atomization is complete. At this time, the controller immediately stops driving the upper piezoelectric ceramic ring 17, the lower piezoelectric ceramic ring 15, the air pump, and other actuators, and simultaneously drives the speaker 6 to emit a prompt sound (three "beep beep beep" sounds) to remind the user that the liquid medicine has been used up.

[0035] The method for setting the termination threshold includes: at the initial stage of atomization (i.e., the first 3 seconds after S2 starts), the controller 8 continuously collects data for 3 seconds through the infrared absorption spectrum sensor, takes the maximum value within this time period as the reference peak value, and sets the termination threshold to 40% of the reference peak value.

[0036] The specific implementation process is as follows: Example 1 Taking a menthol and licorice nebulizer solution used to treat chronic pharyngitis as an example, the control method of the present invention will be described in detail.

[0037] Preparation: The user unscrews the top cover 3 to open the medicine chamber 12, injects 10ml of peppermint and licorice atomizing liquid (the main components are menthol and glycyrrhizic acid), tightens the top cover 3, inserts the nozzle 1 into the connecting tube 2, and presses the control button 5 to start the device.

[0038] 1. Premixing self-test before atomization: After responding to the start command, controller 8 sends a frequency sweep signal to the upward piezoelectric ceramic ring 17, linearly sweeping the frequency from 20kHz to 50kHz for 2 seconds. During the frequency sweep, controller 8 collects drive current data every 10 milliseconds to generate a current-frequency curve. When the frequency sweep reaches 32.5kHz, controller 8 detects that the drive current reaches its maximum value of 2.4A, indicating that the mechanical vibration amplitude of the ceramic diaphragm 16 is at its maximum and the atomization efficiency is highest at this point. Controller 8 locks this 32.5kHz as the optimal atomization resonant frequency for the menthol and licorice atomizing liquid used in this application.

[0039] It should be noted that if different batches of the drug solution are used, the optimal frequency obtained by frequency sweep may change to 32.8kHz or 32.2kHz due to slight differences in viscosity and density. This step achieves automatic adaptation for each drug solution through real-time frequency sweep, eliminating the need for manual adjustment by the user.

[0040] 2. Homogenization and atomization control of components: Taking 32.5 kHz obtained by S1 as a reference, the controller 8 drives the upper piezoelectric ceramic ring 17 and the lower piezoelectric ceramic ring 15 in a cyclic manner according to a preset time sequence. Each time sequence cycle includes three consecutive and non-interval time periods, with a total duration of 0.7 seconds: The first period (0.3 seconds): The controller 8 drives the upper piezoelectric ceramic ring 17 with a sine wave of 32.5 kHz, and the driving voltage is 36V. The ceramic diaphragm 16 vibrates at a high frequency, breaking the menthol glycyrrhiza atomized liquid in contact with the diaphragm into micron-sized droplets with an average particle size of 4 μm, forming an aerosol. This period mainly produces light components rich in menthol.

[0041] The second period (0.1 seconds): The controller 8 drives the lower piezoelectric ceramic ring 15 with a low-frequency square wave of 20 Hz, and the driving voltage is 12V. The ceramic diaphragm 16 generates a low-frequency disturbance, and this vibration is transmitted through the liquid outlet pipe 14 to the remaining liquid medicine in the liquid medicine tank 12, causing macroscopic flow and disturbance of the liquid, and remixing the heavy components such as glycyrrhizic acid that may precipitate evenly.

[0042] The third period (0.3 seconds): The controller 8 drives the upper piezoelectric ceramic ring 17 with 32.5 kHz again, and the ceramic diaphragm 16 vibrates at a high frequency. At this time, the atomized liquid medicine is the one that has been mixed evenly in the second period, and the recombinant components rich in glycyrrhizic acid are produced.

[0043] Through a rapid switch of about 1.4 cycles per second, what the user perceives is a continuous and stable fog output, but in fact each puff of fog contains a balanced ratio of light and heavy components, solving the problem of "first clear and then bitter" in traditional atomization.

[0044] Dynamic adjustment steps in S2: During the atomization process, the infrared absorption spectrum sensor continuously monitors the aerosol concentration in the atomization channel 13. This sensor detects the characteristic absorption wavelength of menthol (about 3.4 μm) and generates a concentration-time curve in real time.

[0045] Starting from the second time sequence cycle, the controller 8 collects the average concentration value C_n 0.1 second before the end of the third period of each cycle (i.e., from 0.6 seconds to 0.7 seconds), and compares it with the average concentration value C_{n - 1} in the same time period of the previous cycle: At the end of the second cycle, it is measured that C2 = 0.98. Compared with C1 = 1.00 in the first cycle, C2 < C1, and the deviation is -2%. The controller determines that the concentration shows a slight downward trend, which may be caused by insufficient mixing of glycyrrhizic acid. Therefore, in the third cycle, the duration of the second period is increased from 0.1 second to 0.15 second by 0.05 second.

[0046] At the end of the third cycle, C3 was measured to be 1.01. Compared with C2, which was 0.98, C3 > C2, with a deviation of +3.1%. The controller determined that the mixing had improved and the concentration had rebounded. Therefore, in the fourth cycle, the duration of the second time period was reduced by 0.05 seconds, restoring it to 0.1 seconds.

[0047] In subsequent cycles, the deviation between C_n and C_{n-1} remained within ±5%, the duration of the second time period stabilized at 0.1 seconds, and the device entered a stable working state.

[0048] Through this closed-loop feedback control, the device adaptively finds the optimal mixing time for the current drug solution, maintaining a stable atomization concentration output at all times.

[0049] 3. Intelligent endpoint determination: Within the first 3 seconds after S2 begins, the infrared absorption spectroscopy sensor continuously acquires concentration data, and the maximum value of 1.05 is taken as the reference peak value. The controller 8 sets the termination threshold to 40% of the reference peak value, i.e., 0.42.

[0050] After approximately 8 minutes of nebulization, the medication gradually depletes, and the infrared sensor detects a continuous decrease in concentration. When the concentration drops below 0.42 and remains below that level for 5 seconds, the controller 8 determines that the medication has been essentially nebulized and immediately stops driving the upper piezoelectric ceramic ring 17, lower piezoelectric ceramic ring 15, air pump, and other actuators. Simultaneously, the speaker 6 emits three "beep beep beep" sounds to remind the user that nebulization is complete.

[0051] 4. Intelligent respiratory synchronization pulse: During nebulization, the airflow sensor inside connecting tube 2 monitors the patient's inspiratory flow rate in real time. Controller 8 identifies the patient's respiratory cycle based on the sensor signals. When the signal of the start of inhalation is detected, the controller 8 initiates high-concentration pulse nebulization in the first third of the inhalation phase (approximately 0.3 seconds), driving the upper piezoelectric ceramic ring 17 at the optimal frequency obtained in S1, and in conjunction with the high-speed airflow provided by the air pump, delivers high-concentration nebulized gas into the depths of the patient's respiratory tract in a pulsed manner.

[0052] During the exhalation phase, the airflow sensor detects reverse airflow or zero flow rate, and the controller 8 adjusts the air pump to a micro-basic airflow mode to keep the ceramic diaphragm 16 moist to prevent dry burning, while pausing or significantly reducing the driving intensity of the upper piezoelectric ceramic ring 17.

[0053] Tests have shown that using this respiratory synchronization control method increases the efficiency of drug deposition in deep lungs by approximately 35%, significantly reducing drug residue waste in the oropharynx.

[0054] This embodiment achieves intelligent adaptive atomization of menthol and licorice atomized liquid through the above control method, which not only ensures homogeneous output of components but also improves drug utilization and provides a good user experience.

[0055] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A novel herbal atomizing liquid atomizing device, characterized in that: Includes a main housing (4), the main housing (4) is detachably connected to an upper housing (11), the upper housing (11) is threadedly connected to a top cover (3), and the upper housing (11) is provided with a liquid medicine tank (12). The main housing (4) is connected to a bracket (7), and the bracket (7) is connected to an air chamber (10), an atomizing chamber (9), and a controller (8). The air chamber (10) is equipped with an air pump and a proportional valve. The air chamber (10) is connected to an air inlet pipe (18), which is connected to the atomizing chamber (9). The liquid tank (12) is connected to the liquid outlet pipe (14), which is connected to the atomization chamber (9). The liquid outlet pipe (14) is provided with an upper piezoelectric ceramic ring (17) and a lower piezoelectric ceramic ring (15). The upper piezoelectric ceramic ring (17) and the lower piezoelectric ceramic ring (15) are stacked coaxially. The upper piezoelectric ceramic ring (17) and the lower piezoelectric ceramic ring (15) are together fitted with a ceramic diaphragm (16). The upper piezoelectric ceramic ring (17) is used for high-frequency vibration atomization, and the lower piezoelectric ceramic ring (15) is used for low-frequency perturbation mixing. The atomizing chamber (9) is connected to an atomizing channel (13), the upper shell (11) is connected to a connecting pipe (2), the atomizing channel (13) is connected to the connecting pipe (2), and the connecting pipe (2) is detachably connected to a nozzle (1). The upper piezoelectric ceramic ring (17), the lower piezoelectric ceramic ring (15), the infrared absorption spectroscopy sensor, the air pump, and the proportional valve are electrically connected to the controller (8).

2. The novel herbal atomizing liquid atomizing device as described in claim 1, characterized in that: An infrared absorption spectroscopy sensor is provided on the side wall of the atomization channel (13).

3. The novel herbal atomizing liquid atomizing device as described in claim 1, characterized in that: The connecting pipe (2) is equipped with a one-way valve.

4. The novel herbal atomizing liquid atomizing device as described in claim 1, characterized in that: The bracket (7) is connected to a control button (5) and a speaker (6), which are electrically connected to the controller (8).

5. The novel herbal atomizing liquid atomizing device as described in claim 1, characterized in that: A first one-way valve is provided at the connection between the air inlet pipe (18) and the atomizing chamber (9), and a second one-way valve is provided at the connection between the liquid outlet pipe (14) and the atomizing chamber (9). The medicine tank (12) is used to store herbal atomizing liquid, and the atomizing chamber (9) is used to convert the herbal atomizing liquid into aerosol. Both the first one-way valve and the second one-way valve are used to prevent the aerosol in the atomizing chamber (9) from flowing back.

6. A control method for a novel herbal atomizing liquid atomizing device, used in any one of claims 1 to 5, characterized in that, Includes the following steps: S1. The user issues a start command through the control button (5). After the controller (8) responds to the start command, it sends a sweep signal to the piezoelectric ceramic ring (17) and synchronously collects its drive current. The controller (8) identifies the maximum value of the drive current during the sweep process and locks the frequency corresponding to the maximum value as the optimal atomization resonance frequency of the current herbal atomizing liquid. S2. The controller (8) atomizes the herbal atomizing liquid according to a preset time cycle at the optimal atomization resonance frequency obtained in S1. Each time cycle includes: In the first period, the upper piezoelectric ceramic ring (17) is driven with the optimal atomization resonance frequency obtained in S1, so that the ceramic diaphragm (16) vibrates at high frequency to atomize the herbal atomized liquid. In the second period, the lower piezoelectric ceramic ring (15) is driven at a preset low-frequency disturbance frequency to cause the ceramic diaphragm (16) to undergo low-frequency disturbance in order to disrupt the mixed herbal atomized liquid. In the third period, the upper piezoelectric ceramic ring (17) is driven again with the optimal atomization resonance frequency obtained in S1, so that the ceramic diaphragm (16) vibrates at high frequency to atomize the mixed herbal atomized liquid. S3. During the atomization process in S2, the concentration of aerosol is continuously monitored by the infrared absorption spectroscopy sensor to form a concentration-time curve. When the value of the concentration-time curve is continuously lower than the termination threshold for 5 seconds, the atomization is automatically determined to be complete, and the controller (8) controls the device to stop working, while driving the speaker (6) to emit a prompt sound.

7. The control method as described in claim 6, characterized in that, In step S3, the method for setting the termination threshold includes: at the initial stage of atomization, the controller (8) continuously collects data for 3 seconds through an infrared absorption spectroscopy sensor, takes the maximum value within this time period as the reference peak value, and sets the termination threshold to 40% of the reference peak value.

8. The control method for a novel herbal atomizing liquid atomizing device as described in claim 6, characterized in that, Step S2 also includes a dynamic adjustment step: After completing at least one time-series cycle, the concentration value C_n before the end of the third time period in the current cycle is obtained by the infrared absorption spectroscopy sensor. Compare C_n with the concentration value C_{n-1} from the previous cycle; Based on the comparison results, the duration of the second time period in the next cycle is dynamically adjusted.

9. The control method for a novel herbal atomizing liquid atomizing device as described in claim 8, characterized in that, The dynamic adjustment specifically refers to: If C_n < C_{n-1}, then the duration of the second time interval in the next cycle increases by 0.05 seconds; If C_n > C_{n-1}, then the duration of the second time interval in the next cycle is reduced by 0.05 seconds; If the deviation between C_n and C_{n-1} is within ±5%, the duration of the second time period remains unchanged.

10. The control method for a novel herbal atomizing liquid atomizing device as described in claim 6, characterized in that, The duration ratio of the first time period to the second time period is 3:1 to 5:1; wherein the preset low-frequency disturbance frequency is 20Hz.

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