High-pressure atomizing branch opening control method and electronic atomizer

Abstract

The application discloses a high-pressure atomization branch opening control method and an electronic atomizer. The high-pressure atomization branch opening control method comprises the following steps: when a user's effective suction action is detected, a main control module enters a suction working stage; in the suction working stage, the main control module collects an internal residual pressure parameter of a high-pressure atomization branch in real time; and the main control module adjusts the working parameter of a flow regulating valve according to the internal residual pressure parameter, so that the aerosol output by the high-pressure atomization branch is kept stable. The high-pressure atomization branch opening control method is designed according to the pressure characteristics of the high-pressure fluid in the high-pressure atomization branch, so that the liquid supply of the high-pressure atomization branch is stable, and the aerosol output is stable.

Description

Technical Field

[0001] This application relates to the field of atomization technology, and in particular to a high-pressure atomization branch opening control method and an electronic atomizer. Background Technology

[0002] Electronic atomizers, as a new type of alternative smoking product, vaporize e-liquid into an aerosol for users to inhale through an atomizing component. They have gained widespread use in the market due to their convenience and relative safety. Currently, the atomization structure design of conventional electronic atomizers on the market is relatively simple, mostly adopting a passive e-liquid supply mode at atmospheric pressure. This supply method is greatly affected by changes in the e-liquid level, easily leading to unstable e-liquid supply and fluctuations in aerosol output, which severely impacts the user's vaping experience.

[0003] To address the shortcomings of the aforementioned atmospheric pressure fuel supply mode, some advanced electronic atomizers are equipped with a high-pressure atomization circuit. This circuit uses high pressure to pump out the atomized liquid, thus eliminating the limitations imposed by liquid level changes on fuel supply, improving fuel supply stability, and making it unrestricted by the user's location.

[0004] However, existing technologies do not have a dedicated valve control scheme designed for the pressure characteristics of the high-pressure fluid in the high-pressure atomization branch. Due to the inherent characteristics of high-pressure fluids, such as pressure decay and flow rate fluctuations during flow, the lack of a dedicated valve control design leads to poor liquid supply stability in the high-pressure atomization branch. Consequently, it is difficult to maintain a stable aerosol output from the high-pressure atomization branch, making it impossible to achieve accurate and stable atomization output and meet users' high-quality vaping experience requirements. Summary of the Invention

[0005] The main purpose of this application is to provide a high-pressure atomization branch opening control method and an electronic atomizer, which solves the technical problem of unstable liquid supply and fluctuating aerosol output caused by the lack of a dedicated control valve design in the high-pressure atomization branch of existing electronic atomizers.

[0006] To achieve the above objectives, the first aspect of this application proposes a high-pressure atomization branch opening control method, which is applied to an electronic atomizer. The electronic atomizer includes a main control module, an atomization component, a high-pressure atomization branch, and a flow regulating valve. The atomization component is connected to the high-pressure atomization branch, and the flow regulating valve is used to control the on / off state of the high-pressure atomization branch and the output flow rate. The high-pressure atomization branch opening control method includes the following steps: When the main control module detects a valid suction action from the user, it enters the suction working phase. During the suction operation phase, the main control module collects the internal residual pressure parameters of the high-pressure atomization branch in real time; The main control module adjusts the operating parameters of the flow regulating valve based on the internal residual pressure parameters to keep the amount of aerosol output from the high-pressure atomization branch stable.

[0007] Optionally, the main control module collects the internal residual pressure parameters of the high-pressure atomization branch in real time, including: The main control module collects the injection parameters of the flow regulating valve in real time; The main control module determines the internal residual pressure parameters of the high-pressure atomization branch based on the pre-stored injection parameter-residual pressure mapping relationship; The injection parameters include at least one of the following: number of injections, cumulative injection duration, and total injection volume. The mapping relationship between injection parameters and residual pressure is a preset data table or a fitting function.

[0008] Optionally, the operating parameters of the flow regulating valve include the valve's opening degree and opening duration; the main control module adjusts the operating parameters of the flow regulating valve based on the internal residual pressure parameters, including: The main control module prioritizes adjusting the opening of the flow regulating valve based on the internal residual pressure parameters, so that the liquid supply of the high-pressure atomization branch matches the liquid supply demand under the current suction intensity. If the aerosol output from the high-pressure atomization branch still does not reach the preset target value after the flow regulating valve reaches its maximum opening, the main control module will further extend the opening time of the flow regulating valve to achieve flow compensation.

[0009] Optionally, the electronic atomizer also includes a normal pressure atomization branch, and the atomization component is connected to both the normal pressure atomization branch and the high pressure atomization branch; The high-pressure atomization branch opening control method further includes: During the suction operation, the main control module also collects the remaining e-liquid level parameters of the atmospheric pressure atomization branch in real time; The main control module coordinates the working parameters of the flow regulating valve based on the remaining e-liquid level and internal remaining pressure parameters, so as to keep the total amount of aerosol output by the normal pressure atomization branch and the high pressure atomization branch stable.

[0010] Optionally, the e-liquid remaining liquid level parameter includes a sufficient liquid level state and a insufficient liquid level state. When the e-liquid level of the normal pressure atomization branch is not lower than the preset liquid level threshold, it is a sufficient liquid level state. When the e-liquid level of the normal pressure atomization branch is lower than the preset liquid level threshold, it is a insufficient liquid level state. The main control module coordinates the operating parameters of the flow regulating valve based on the remaining e-liquid level and internal remaining pressure parameters, including: When the e-liquid level is not lower than the preset level threshold, the main control module adjusts the working parameters of the flow regulating valve according to the internal residual pressure parameters, so that the amount of aerosol output by the high-pressure atomization branch is kept within the preset range. When the e-liquid level is lower than the preset level threshold, the main control module reduces the heating power of the atomizing component based on the remaining e-liquid level parameter. The main control module also adjusts the operating parameters of the flow regulating valve based on the remaining e-liquid level parameter and the internal residual pressure parameter, thereby increasing the aerosol output of the high-pressure atomizing branch to compensate for the aerosol output attenuation of the normal-pressure atomizing branch, so that the total amount of aerosol output by the normal-pressure atomizing branch and the high-pressure atomizing branch remains stable.

[0011] Optionally, the main control module adjusts the heating power of the atomizing component according to the remaining e-liquid level parameter, including: The main control module determines the target heating power corresponding to the current e-liquid level based on the pre-stored mapping relationship between e-liquid level and heating power. The main control module adjusts the heating power of the atomizing component to the target heating power; The mapping relationship between e-liquid level and heating power is a preset data table or fitting function.

[0012] Optionally, the main control module adjusts the operating parameters of the flow regulating valve by combining the remaining e-liquid level parameter and the internal remaining pressure parameter, including: The main control module determines the actual aerosol output of the current atmospheric pressure atomization branch based on the pre-stored mapping relationship between e-liquid level and aerosol output of atmospheric pressure atomization branch; The main control module determines the compensation output of the high-pressure atomization branch based on the difference between the preset target aerosol output of the atmospheric pressure atomization branch and the actual aerosol output. The main control module adjusts the operating parameters of the flow regulating valve based on the compensation output. The mapping relationship between e-liquid level and aerosol output of atmospheric pressure atomization branch is a preset data table or fitting function.

[0013] Optionally, the timing control of starting and stopping the atomizing component and the flow regulating valve by the main control module is as follows: When an effective suction action begins, the main control module first activates the atomizing component, and then activates the flow regulating valve after a delay of 30ms to 80ms. When the effective suction action ends, the main control module first closes the flow regulating valve, and then shuts down the atomizing component after a delay of 50ms to 100ms.

[0014] Optionally, the electronic atomizer may also include an airflow sensing module; The main control module collects suction parameters in real time through the airflow sensor module. The suction parameters include suction airflow intensity and suction duration. The main control module determines a valid suction action and activates the atomizing component and flow regulating valve only when both the suction airflow intensity and suction duration meet the preset thresholds.

[0015] The second aspect of this application provides an electronic atomizer, which includes a main control module, an atomizing component, a high-pressure atomizing branch, and a flow regulating valve; the atomizing component is connected to the high-pressure atomizing branch, and the flow regulating valve is connected to the high-pressure atomizing branch; the main control module is signal-connected to the atomizing component and the flow regulating valve respectively; the main control module is used to execute the above-mentioned high-pressure atomizing branch opening control method; Alternatively, the electronic atomizer includes a main control module, an atomizing component, a normal pressure atomizing branch, a high pressure atomizing branch, and a flow regulating valve; the atomizing component is connected to the normal pressure atomizing branch and the high pressure atomizing branch, and the flow regulating valve is connected to the high pressure atomizing branch; the main control module is signal-connected to the atomizing component and the flow regulating valve respectively; the main control module is used to execute the above-mentioned high pressure atomizing branch opening control method.

[0016] In the high-pressure atomization branch opening control method of this application, after detecting effective inhalation by the user, the residual pressure inside the high-pressure atomization branch is collected in real time to accurately grasp the correlation between pressure drop and liquid ejection, and then the working parameters of the flow regulating valve are adjusted to keep the aerosol output of the high-pressure atomization branch stable. The high-pressure atomization branch opening control method of this application realizes a dedicated flow regulating valve control for the pressure characteristics of high-pressure fluid, optimizes the existing high-pressure atomization branch flow regulating valve control defects, and significantly improves the consistency and stability of the user's inhalation taste. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a cross-sectional view of an embodiment of the electronic atomizer of this application; Figure 2 This is a flowchart of an embodiment of the high-pressure atomization branch opening control method of this application; Figure 3 for Figure 2 The logic decision diagram of the embodiment shown; Figure 4 This is a flowchart of another embodiment of the high-pressure atomization branch opening control method of this application; Figure 5 for Figure 4 The logic decision diagram of the embodiment shown; Figure 6 for Figure 4 The timing control logic decision diagram of the embodiment shown.

[0019] The following are the diagram numbers: 100 - Main control module; 200 - Atomizing component; 300 - Atmospheric pressure atomizing branch; 400 - High pressure atomizing branch; 500 - Flow regulating valve; 600 - Gas flow sensor module; 700 - High pressure liquid storage bottle.

[0020] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0024] This application provides a high-pressure atomization branch opening control method and an electronic atomizer. This high-pressure atomization branch opening control method and electronic atomizer can be widely used in various electronic cigarettes, medical atomizers, beauty atomizers, and other devices that require the generation of stable aerosols. They are particularly suitable for products with high-pressure jet atomization functions, significantly improving output consistency and user satisfaction.

[0025] The following provides a detailed description of the high-pressure atomization branch opening control method and the specific implementation method of the electronic atomizer in this application.

[0026] Example 1: An electronic atomizer including a high-pressure atomization branch 400 and its control method like Figure 1 As shown, this embodiment provides an electronic atomizer, which includes a main control module 100, an atomizing component 200, a high-pressure atomizing branch 400, and a flow regulating valve 500. The atomizing component 200 includes a heating element and is connected to the high-pressure atomizing branch 400. The flow regulating valve 500 is installed in the flow channel of the high-pressure atomizing branch 400 and is used to control the on / off state of the high-pressure atomizing branch 400 and the flow rate. The main control module 100 is connected to the heating element of the atomizing component 200 and the control terminal of the flow regulating valve 500. In addition, the electronic atomizer also includes an airflow sensing module 600 (such as a microphone or air pressure sensor), and the main control module 100 receives signals from the airflow sensing module 600 to detect the inhalation action.

[0027] The flow regulating valve 500 can be a miniature electromagnetic proportional valve or a needle valve driven by a stepper motor to achieve precise control of its opening degree; its opening duration is controlled by a timer built into the main control module 100. To improve response speed, a normally closed electromagnetic proportional valve is preferred, which opens proportionally to the drive current after being energized.

[0028] The main control module 100 can be a microcontroller (such as the STM32 series), an application-specific integrated circuit (ASIC), or an embedded microcontroller. It integrates: an ADC module for acquiring signals from the gas flow sensing module 600 and the liquid level sensor, a PWM output module for controlling the heating power and the opening degree of the proportional valve, and a timer module for controlling the opening duration and timing delay.

[0029] The atomizing branch 400 has an atomizing chamber inside. The high-pressure atomizing branch 400 is connected to the atomizing chamber. At the moment the atomized liquid of the high-pressure atomizing branch 400 is pumped out from the high-pressure storage bottle 700, it is rapidly atomized by the heating element and then flows into the atomizing chamber. Driven by the suction airflow, it is inhaled by the user through the mouthpiece connected to the atomizing chamber.

[0030] The procedure for controlling the opening of the high-pressure atomization branch is as follows: Figure 2 As shown, it includes the following steps: Step S101: When the main control module 100 detects a valid suction action from the user, it enters the suction working stage.

[0031] Specifically, the main control module 100 collects suction parameters in real time through the airflow sensor module 600, including suction airflow intensity and suction duration. A valid suction action is only determined when the suction airflow intensity is greater than a preset intensity threshold (e.g., 0.5 L / min) and the suction duration is greater than a preset duration threshold (e.g., 0.3 seconds), thus avoiding false triggering caused by short bursts of air or environmental airflow disturbances. After a valid determination, the main control module 100 activates the atomizing component 200 and the flow regulating valve 500, and controls them according to a preset timing sequence (see below for details).

[0032] Step S102: During the suction operation phase, the main control module 100 collects the internal residual pressure parameters of the high-pressure atomization branch 400 in real time.

[0033] Since the high-pressure atomization branch 400 is typically a closed high-pressure chamber, directly installing a pressure sensor would increase cost and sealing difficulty. This embodiment employs an indirect measurement method: the main control module 100 acquires the injection parameters of the flow regulating valve 500 in real time. These injection parameters can be the cumulative number of injections since the electronic atomizer left the factory (i.e., the number of times the flow regulating valve 500 has opened), the cumulative injection duration (the sum of all opening durations), or the total injection volume (the cumulative output volume estimated based on flow rate and duration). The main control module 100's internal memory pre-stores an injection parameter-residual pressure mapping relationship, which can be obtained through experimental calibration, in the form of a data table or a fitting function (e.g., an exponential decay function). Based on the currently acquired injection parameters, the main control module 100 searches for or calculates the corresponding internal residual pressure parameters.

[0034] Step S103: The main control module 100 adjusts the working parameters of the flow regulating valve 500 according to the internal residual pressure parameters to keep the amount of aerosol output by the high-pressure atomization branch 400 stable.

[0035] Operating parameters can include opening degree and opening duration. The adjustment strategy prioritizes adjusting the opening degree of the flow regulating valve 500: the main control module 100 calculates the required opening degree according to the internal residual pressure parameters and a preset compensation curve. The lower the residual pressure, the larger the opening degree of the flow regulating valve 500, in order to increase the flow rate per unit time and compensate for the insufficient jet kinetic energy. If the opening degree has reached the maximum opening degree (i.e., fully open), but the output aerosol quantity is still not at the preset target value based on feedback (such as indirect detection of aerosol concentration through the airflow sensor module 600 or calculation through a preset model), the main control module 100 further extends the opening duration of the flow regulating valve 500, that is, in one suction action, the flow regulating valve 500 is kept open for a time longer than the basic duration to achieve additional flow compensation.

[0036] Through the above steps, even if the internal pressure of the high-pressure atomization branch 400 gradually decreases due to repeated use, the main control module 100 can dynamically adjust the opening or duration of the flow regulating valve 500 so that the total amount of aerosol output each time is basically constant.

[0037] If the operating time also reaches the set upper limit, the flow regulating valve 500 will enter the extreme output mode, maintaining the current maximum injection parameters and simultaneously triggering a low liquid level warning to ensure stable and controllable operation. The low liquid level warning may include at least one of audible, vibration, or visual warnings, and this application does not specifically limit it.

[0038] The high-pressure atomization branch opening control method provided in this embodiment includes a factory calibration stage and a whole machine usage stage, as detailed below: I. Factory Calibration Stage The core logic of factory calibration is to collect data through phased experiments, and then fit and organize it to generate a reference table that can be directly used for control, which is fully compatible with high-pressure atomization scenarios.

[0039] Prepare standard experimental equipment: a full-fill high-pressure storage bottle (700), a flow regulating valve (500), a timing device, a pressure detector, and a concentration detector (for verification). Ensure that the ambient temperature is constant (to eliminate temperature interference).

[0040] The process is as follows: 1. Fill the high-pressure liquid storage bottle to 700ml and place it under constant ambient temperature conditions; 2. Perform standard spraying one after another and record the following parameters: cumulative number of sprays n, bottle pressure P, opening degree K of flow control valve 500 to ensure constant spray volume, number of times flow control valve 500 reaches maximum opening - time compensation value T, and upper limit threshold of opening time. 3. Perform fitting and segmentation processing on the recorded data; 4. Generate a "Number of Times - Pressure - Opening Degree - Time Compensation - Upper Limit Threshold Table" and write the table into the controller memory of the main control module 100.

[0041] The calibration will be completed in stages (corresponding to subsequent actual use scenarios): Phase 1 (Full / High Pressure): The high-pressure storage bottle 700 is at its highest pressure. Record the opening degree K1 of the flow control valve 500 and the standard injection duration T1 (to ensure stable injection volume) as initial baseline data.

[0042] Phase 2 (Medium Liquid Level / Medium Pressure): Release part of the liquid from the high-pressure storage bottle 700 to simulate the intermediate state in actual use, and record the cumulative number of times n1, the corresponding pressure P1, the required opening degree K2, and the compensation time T2.

[0043] Phase 3 (Low Liquid Level / Low Pressure): The high-pressure storage bottle 700 continues to release liquid until the "minimum effective pressure" is reached (unable to meet the standard jet volume). Record the cumulative number of times n2, pressure P2, maximum opening Kmax, and longest compensation time Tmax at this time, and determine the "upper limit threshold" (maximum opening time of the flow regulating valve 500).

[0044] Phase 4 (Limit Verification): Simulate the critical state before the 700ml oil in the high-pressure reservoir is depleted, and record the number of limit attempts n3, the minimum pressure Pmin, and the limit compensation time Tmax at this time, which will be used as the "upper limit threshold" in the table.

[0045] Data processing: All the above experimental data are processed into a standardized data table according to the correspondence of "cumulative number of times n → pressure P → opening degree K → compensation time T → upper limit threshold".

[0046] Table 1 Test Experiment Data Table

[0047] Total number of sprays n Corresponding pressure P (MPa) Flow control valve opening K Compensation injection duration T (s) Upper limit threshold (maximum opening / maximum duration) 0-50 times 0.8-1.2 Small-Medium Fixed reference value Normal compensation if the upper limit is not reached. 51-100 times 0.5-0.8 middle Baseline value + 0.2s Not reached the limit 101-150 times 0.3-0.5 Medium-Large Baseline value + 0.4s Approaching the upper limit 151-200 times ≤0.3 maximum Baseline value + 0.6s Reaching the limit, Extreme Mode >200 times ＜0.2 maximum Maximum compensation duration Exceeding the valid range, indicating that the limit has been reached. The data in the table above all comes from the "factory calibration test," requiring no additional sensors and directly adapting to the previous pressure sensor-less, pure counting control mode. The "pressure, opening degree, and duration" for each interval are linearly correlated, ensuring that the subsequent main control module 100 can directly call the corresponding parameters through "cumulative counts" without additional calculations.

[0048] Key points to note: 1. During the calibration process, the ambient temperature is kept constant (±2℃) to avoid the influence of temperature on pressure and jet volume, and to ensure data accuracy; 2. Ensure that the "single jet volume" is consistent each time it is calibrated, so that the data in the table can directly correspond to the actual jet volume when used in subsequent applications; 3. The upper limit threshold must be clearly defined: When the flow regulating valve reaches its maximum opening of 500 and the injection duration reaches the upper limit, the "limit mode" is directly triggered and simultaneously recorded as "fuel depletion" to avoid ineffective injection; 4. The table can be adjusted according to the actual usage scenario to adapt to the parameters of different specifications of high-pressure liquid storage bottle 700 and flow regulating valve 500.

[0049] Integration with the overall machine control: The main control module 100 only needs to read the "cumulative number of injections n" to directly query the table and call the corresponding "opening degree K, duration T", without the need for additional pressure detection; when the number of injections reaches the "upper limit threshold" in the table, the "limit mode" is automatically triggered to maintain the maximum injection parameters, while indicating that the oil level in the high-pressure liquid storage bottle 700 is insufficient.

[0050] II. Overall Machine Usage Stage Please see Figure 3 The specific logic judgment of the control process for the high-pressure atomization branch opening control method is as follows: 1. System initialization: Clear the number of injections n to zero; Receive injection trigger signal (i.e., effective suction action by the user); 2. Read the current cumulative number of sprays, n; 3. Query the built-in mapping table of the controller memory of the main control module 100 to obtain the corresponding opening degree K.

[0051] 4. Determine whether the opening degree K has reached the maximum physical limit of the flow regulating valve 500: 5. If the target is not met, an opening compensation strategy will be adopted: the valve will be opened at opening K and spraying will be performed for a fixed duration. 6. If the maximum opening has been reached, then the time-dimensional compensation strategy will be activated: a. Fix the flow regulating valve 500 at its maximum opening; b. Query the built-in mapping table to obtain the compensation injection duration T; c. Determine whether T has reached the upper limit of the opening time of the flow control valve 500: 7. If the target is not reached, spraying will proceed according to the compensated duration T. 8. If the upper limit has been reached, it will enter the extreme output mode: maintain operation for the maximum duration and trigger a low liquid level warning simultaneously; 9. After the timing is completed, close the flow regulating valve 500 and stop the suction.

[0052] 10. Increase the number of sprays n by 1 (n = n + 1), and complete the spray in one go; 11. Determine if the suction and ejection action continues: 12. If yes, return to step 2 (receive the jet trigger signal).

[0053] 13. If not, then end this control flow.

[0054] Example 2: An electronic atomizer comprising a normal pressure atomization branch 300 and a high pressure atomization branch 400 and its coordinated control method. like Figure 1 As shown, this embodiment adds a normal pressure atomization branch 300 to the first embodiment. The atomization assembly 200 is connected to both the normal pressure atomization branch 300 and the high pressure atomization branch 400. Unlike the high pressure atomization branch 400, which is controlled by a flow regulating valve 500, the normal pressure atomization branch 300 does not have a switching valve and relies on natural flow or capillary action for liquid supply. In addition to connecting to the flow regulating valve 500, the main control module 100 is also connected to a sensor (such as a capacitive level sensor, an optical refractive sensor, etc.) for detecting the e-liquid level in the normal pressure atomization branch 300.

[0055] The high-pressure atomization branch opening control method in this embodiment, based on the steps of Embodiment 1, adds dual-branch collaborative control logic including the atmospheric pressure atomization branch 300, such as... Figure 4 As shown, the control flow of the dual-branch cooperative control method includes: Step S201: During the vaping operation, the main control module 100 also collects the e-liquid remaining liquid level parameters of the atmospheric pressure atomization branch 300 in real time. The e-liquid remaining liquid level parameters can be divided into a sufficient liquid level state (liquid level ≥ preset liquid level threshold) and a insufficient liquid level state (liquid level < preset liquid level threshold).

[0056] Step S202: The main control module 100 adjusts the working parameters of the flow regulating valve 500 in coordination with the remaining liquid level parameters of the e-liquid and the internal remaining pressure parameters of the high-pressure atomization branch 400, so as to keep the total amount of aerosol output by the normal pressure atomization branch 300 and the high-pressure atomization branch 400 stable.

[0057] Specifically: When the e-liquid level is not lower than the preset level threshold, the atmospheric pressure atomization branch 300 supplies liquid normally. At this time, the main control module 100 adjusts the operating parameters of the flow regulating valve 500 only according to the internal residual pressure parameters of the high-pressure atomization branch 400, so that the aerosol output of the high-pressure atomization branch 400 is kept within the preset range (i.e., the total output is stable after being superimposed with the output of the atmospheric pressure atomization branch 300). The adjustment method in this mode is the same as in Example 1.

[0058] When the e-liquid level falls below a preset threshold, the supply capacity of the atmospheric pressure atomization branch 300 decreases. If the original heating power is maintained, a burnt smell will occur, and the aerosol output will significantly decrease. Therefore, the main control module 100 first adjusts the heating power of the atomization component 200 based on the remaining e-liquid level. Specifically, the main control module 100 has a pre-stored mapping relationship between e-liquid level and heating power (data table or fitting function). After determining the target heating power corresponding to the current level, the main control module 100 adjusts the heating element of the atomization component 200 (e.g., via PWM control) to that power to prevent dry burning.

[0059] Meanwhile, in order to compensate for the aerosol output attenuation caused by insufficient liquid level and power reduction in the atmospheric pressure atomization branch 300, the main control module 100 adjusts the operating parameters of the flow regulating valve 500 based on the remaining e-liquid liquid level parameters and internal remaining pressure parameters, thereby increasing the aerosol output of the high pressure atomization branch 400.

[0060] It should be noted that the heating power of the atomizing component 200 in this application is adaptively reduced according to the remaining content of the atomizing liquid in the atmospheric pressure atomizing branch 300. However, the reduction range is reasonably set so that the atomizing component 200 can still maintain normal atomization function and will not have problems such as poor atomization effect or even failure to atomize due to power reduction.

[0061] The reduction in power of the atomizing component 200 has a limited impact on the aerosol output of the high-pressure atomizing branch 400, and will not significantly interfere with the accuracy of the compensation control of the high-pressure atomizing branch 400. This is because the high-pressure atomizing branch 400 uses a high-pressure injection method, where the atomized liquid is instantaneously sprayed onto the heating surface of the atomizing component 200 in the form of micron-sized droplets. Due to the small droplet size and large specific surface area, the heat exchange efficiency with the heating surface is extremely high, achieving complete atomization within milliseconds. Therefore, as long as the temperature of the heating surface remains higher than the boiling points of the main components of the e-liquid (such as propylene glycol with a boiling point of approximately 188°C and glycerin with a boiling point of approximately 290°C), the atomization efficiency remains relatively stable and is not sensitive to fluctuations in heating power.

[0062] To further enhance robustness, a minimum safe power threshold can be set during factory calibration to ensure that the heating surface temperature of the atomizing component 200 is always higher than the boiling point of the e-liquid, thereby ensuring that the atomization efficiency of the high-pressure atomizing branch 400 remains within a stable range.

[0063] This application is not limited to using a single atomizing component 200 to simultaneously heat the atomizing liquid in the atmospheric pressure atomizing branch 300 and the high-pressure atomizing branch 400. In other embodiments, this application may include two independent atomizing components 200, respectively used to heat the atomizing liquid in the atmospheric pressure atomizing branch 300 and the high-pressure atomizing branch 400.

[0064] In typical use of an e-cigarette, the e-liquid consumption rate and supply capacity of the atmospheric pressure atomizing circuit 300 and the high-pressure atomizing circuit 400 usually differ. Generally, the atmospheric pressure atomizing circuit 300, as the main e-liquid source, has a relatively small reservoir capacity or a faster e-liquid consumption rate, so the e-liquid level will drop to an insufficient state first. Furthermore, in actual operation, while the e-liquid level in the atmospheric pressure atomizing circuit 300 has not yet reached the insufficient threshold, the high-pressure atomizing circuit 400 may have already experienced hundreds of sprays, and its internal residual pressure has significantly decreased from its initial value. That is, by the time the e-liquid level in the atmospheric pressure atomizing circuit 300 is finally determined to be insufficient, the internal pressure of the high-pressure atomizing circuit 400 has already dropped to a stage where time-compensation is required.

[0065] Under the above premise, please refer to Figure 5 The specific compensation algorithm of the dual-branch cooperative control method provided in this embodiment is as follows: The main control module 100 determines the actual aerosol output Q_actual of the current atmospheric pressure atomization branch 300 based on the pre-stored mapping relationship between e-liquid level and aerosol output of the atmospheric pressure atomization branch. This mapping relationship can be calibrated experimentally: under different e-liquid levels and corresponding heating powers, the mass or volume of aerosol output per unit time of the atmospheric pressure atomization branch 300 is measured to form a data table or fitting function.

[0066] The main control module 100 reads the preset target aerosol output Q_target of the atmospheric pressure atomization branch (i.e., the share that the atmospheric pressure atomization branch 300 is considered to contribute during system design) and calculates the compensation difference. (If ΔQ is positive, it means that the high-pressure atomization branch needs more than 400 outputs; if it is negative, it means that the normal pressure atomization branch has exceeded the 300 output, and the high-pressure atomization branch can be reduced to 400 outputs. However, ΔQ is usually positive when the liquid level is insufficient.)

[0067] The main control module 100 adjusts the operating parameters of the flow regulating valve 500 based on the compensation output ΔQ and the current internal residual pressure of the high-pressure atomization branch 400, so that the high-pressure atomization branch 400 outputs an additional ΔQ of aerosol.

[0068] Through the aforementioned coordinated control, even when the e-liquid in the atmospheric pressure atomizing branch 300 is about to run out, users can still feel a relatively stable overall aerosol volume, resulting in smooth flavor changes and an enhanced product experience.

[0069] The formula for the above control method is: D = (Q_target - Q_actual) / Q_max.

[0070] Parameter description: Q_max is the maximum compensated output that the high-pressure atomizing branch 400 can provide under the maximum opening time. D value range: 0≤D≤1. When the liquid level of the atmospheric pressure atomizing branch 300 gradually decreases, D increases synchronously and linearly, and the opening time of the flow regulating valve 500 increases.

[0071] The above formula can also be expressed using aerosol output concentration. Specifically: set up: The preset target total aerosol output concentration; The output aerosol concentration of the atmospheric pressure atomization branch is 300. The output aerosol concentration of the high-pressure atomization branch 400; The output concentration coefficient of the high-pressure atomization branch 400 represents the aerosol concentration contributed by the high-pressure atomization branch 400 when working alone under a unit duty cycle (i.e., when the flow regulating valve 500 is open for 100% of the time). It is an inherent parameter of the output capability of the high-pressure atomization branch 400, reflecting the concentration increment that the high-pressure atomized liquid can produce after atomization when the flow regulating valve 500 is fully open.

[0072] The preset target total aerosol output concentration satisfies:

[0073] The target duty cycle D (range 0≤D≤1) required for the high-pressure atomization branch 400 is calculated by the following formula:

[0074] when As the liquid level decreases, D increases linearly, and the proportion of the high-pressure atomization branch 400's operating time increases accordingly.

[0075] Example 3: Timing control of the high-pressure atomization branch 400 opening control method Please see Figure 6 At the start of an effective vaping action, the main control module 100 first activates the heating element of the atomizing component 200, and then opens the flow regulating valve 500 after a delay of 30ms to 80ms. This delay allows the atomizing component 200 to reach its operating temperature first, preventing the e-liquid from being sprayed at high pressure before it is fully atomized during a cold start, which would otherwise result in large droplets. At the end of an effective vaping action, the main control module 100 first closes the flow regulating valve 500, and then shuts down the atomizing component 200 after a delay of 50ms to 100ms. This delay allows any remaining small amount of e-liquid in the high-pressure atomization branch 400 to continue to be heated and atomized by the atomizing component 200 and discharged, preventing condensate leakage after shutdown.

[0076] It should be noted that, Figure 6 The timing control flow of the coordinated control method including the atmospheric pressure atomization branch 300 and the high-pressure atomization branch 400 is shown. For the case of a single high-pressure atomization branch 400, its timing control method is similar to... Figure 6 The process shown is similar and also falls within the scope of protection of this application. Since the two are based on the same principle, they will not be described again in this article.

[0077] Example 4: Specific numerical examples The following uses a set of non-limiting specific numerical values ​​to further illustrate this application.

[0078] 400 scenario with a single high-pressure atomization branch: Assuming the initial pressure of the high-pressure reservoir 700 of the electronic atomizer is 12 bar, the corresponding injection parameter-residual pressure mapping relationship is linearly decreasing: P_rem = 12 - 0.01*N, where N is the cumulative number of injections. When the cumulative number of injections reaches 400, the residual pressure P_rem = 8 bar. The preset target aerosol output is 2.5 mg per inhalation.

[0079] In the initial state (residual pressure 12 bar), setting the flow control valve opening to 40% and the opening duration to 0.5 seconds will achieve the target output of 2.5 mg. When the residual pressure drops to 8 bar, according to experimental calibration, the opening needs to be adjusted to 70% to maintain the same output. If the opening has reached the maximum physical opening (100%) and the pressure continues to drop to 5 bar, even if fully opened, 2.5 mg cannot be achieved. In this case, the opening duration needs to be extended to 0.7 seconds to compensate for the flow rate decrease caused by the pressure drop through time compensation.

[0080] Dual-branch cooperative control scenario: For an e-cigarette that includes both a normal-pressure atomization branch 300 and a high-pressure atomization branch 400, the target contribution of the normal-pressure atomization branch 300 can be set to 1.5 mg / puff, the target contribution of the high-pressure atomization branch 400 to 1.0 mg / puff, and the total target output to 2.5 mg / puff. When the liquid level in the normal-pressure atomization branch 400 is lower than a preset threshold (e.g., 15% remaining liquid level), according to the pre-stored mapping relationship between e-liquid level and aerosol output of the normal-pressure atomization branch, the actual output of the normal-pressure atomization branch 300 drops to 0.8 mg / puff. At this point, the compensation difference ΔQ = 1.5 - 0.8 = 0.7 mg is calculated. If the remaining pressure of the high-pressure atomization branch 400 is sufficient at this time, the output of the high-pressure atomization branch 400 can be increased from 1.0 mg / orifice to 1.7 mg / orifice by increasing the opening degree of the flow regulating valve 500 or extending the opening time, thereby restoring the total output to 2.5 mg / orifice and stabilizing the total amount of aerosol.

[0081] It should be noted that the above values ​​are illustrative parameters used to explain the control principle of this application. In practical applications, specific values ​​need to be determined through experimental calibration based on factors such as the specific structure of the electronic atomizer, the characteristics of the atomizing liquid, and the user's vaping habits. This application is not limited to the specific values ​​mentioned above.

[0082] The above are merely preferred embodiments of this application and do not limit the scope of the patent application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of this application.

Claims

1. A method for controlling the opening of a high-pressure atomizing branch, characterized in that, It is used in electronic atomizers, which include a main control module, an atomization component, a high-pressure atomization branch, and a flow regulating valve. The atomization component is connected to the high-pressure atomization branch, and the flow regulating valve is used to control the on / off state of the high-pressure atomization branch and the output flow rate. The high-pressure atomization branch opening control method includes the following steps: When the main control module detects a valid suction action from the user, it enters the suction working phase. During the suction operation phase, the main control module collects the internal residual pressure parameters of the high-pressure atomization branch in real time; The main control module adjusts the operating parameters of the flow regulating valve based on the internal residual pressure parameters to keep the amount of aerosol output from the high-pressure atomization branch stable.

2. The high-pressure atomization branch opening control method according to claim 1, characterized in that, The main control module collects the internal residual pressure parameters of the high-pressure atomization branch in real time, including: The main control module collects the injection parameters of the flow regulating valve in real time; The main control module determines the internal residual pressure parameters of the high-pressure atomization branch based on the pre-stored injection parameter-residual pressure mapping relationship; The injection parameters include at least one of the following: number of injections, cumulative injection duration, and total injection volume. The mapping relationship between injection parameters and residual pressure is a preset data table or a fitting function.

3. The high-pressure atomization branch opening control method according to claim 1, characterized in that, The operating parameters of the flow control valve include the valve opening degree and opening duration; the main control module adjusts the operating parameters of the flow control valve according to the internal residual pressure parameters, including: The main control module prioritizes adjusting the opening of the flow regulating valve based on the internal residual pressure parameters, so that the liquid supply of the high-pressure atomization branch matches the liquid supply demand under the current suction intensity. If the aerosol output from the high-pressure atomization branch still does not reach the preset target value after the flow regulating valve reaches its maximum opening, the main control module will further extend the opening time of the flow regulating valve to achieve flow compensation.

4. The high-pressure atomization branch opening control method according to claim 1, characterized in that, Electronic atomizers also include a normal pressure atomization branch, and the atomization component is connected to both the normal pressure atomization branch and the high pressure atomization branch; The high-pressure atomization branch opening control method further includes: During the suction operation, the main control module also collects the remaining e-liquid level parameters of the atmospheric pressure atomization branch in real time; The main control module coordinates the working parameters of the flow regulating valve based on the remaining e-liquid level and internal remaining pressure parameters, so as to keep the total amount of aerosol output by the normal pressure atomization branch and the high pressure atomization branch stable.

5. The high-pressure atomization branch opening control method according to claim 4, characterized in that, The e-liquid remaining liquid level parameter includes the state of sufficient liquid and the state of insufficient liquid. When the e-liquid level of the normal pressure atomization branch is not lower than the preset liquid level threshold, it is a state of sufficient liquid. When the e-liquid level of the normal pressure atomization branch is lower than the preset liquid level threshold, it is a state of insufficient liquid. The main control module coordinates the operating parameters of the flow regulating valve based on the remaining e-liquid level and internal remaining pressure parameters, including: When the e-liquid level is not lower than the preset level threshold, the main control module adjusts the working parameters of the flow regulating valve according to the internal residual pressure parameters, so that the amount of aerosol output by the high-pressure atomization branch is kept within the preset range. When the e-liquid level is lower than the preset level threshold, the main control module reduces the heating power of the atomizing component based on the remaining e-liquid level parameter. The main control module also adjusts the operating parameters of the flow regulating valve based on the remaining e-liquid level parameter and the internal residual pressure parameter, thereby increasing the aerosol output of the high-pressure atomizing branch to compensate for the aerosol output attenuation of the normal-pressure atomizing branch, so that the total amount of aerosol output by the normal-pressure atomizing branch and the high-pressure atomizing branch remains stable.

6. The high-pressure atomization branch opening control method according to claim 5, characterized in that, The main control module adjusts the heating power of the atomizing component according to the remaining e-liquid level parameter, including: The main control module determines the target heating power corresponding to the current e-liquid level based on the pre-stored mapping relationship between e-liquid level and heating power. The main control module adjusts the heating power of the atomizing component to the target heating power; The mapping relationship between e-liquid level and heating power is a preset data table or fitting function.

7. The high-pressure atomization branch opening control method according to claim 5, characterized in that, The main control module adjusts the operating parameters of the flow regulating valve by combining the remaining e-liquid level parameter and the internal remaining pressure parameter, including: The main control module determines the actual aerosol output of the current atmospheric pressure atomization branch based on the pre-stored mapping relationship between e-liquid level and aerosol output of atmospheric pressure atomization branch; The main control module determines the compensation output of the high-pressure atomization branch based on the difference between the preset target aerosol output of the atmospheric pressure atomization branch and the actual aerosol output. The main control module adjusts the operating parameters of the flow regulating valve based on the compensation output. The mapping relationship between e-liquid level and aerosol output of atmospheric pressure atomization branch is a preset data table or fitting function.

8. The high-pressure atomization branch opening control method according to claim 4, characterized in that, The timing control of starting and stopping the atomizing component and flow regulating valve in the main control module is as follows: When an effective suction action begins, the main control module first activates the atomizing component, and then activates the flow regulating valve after a delay of 30ms to 80ms. When the effective suction action ends, the main control module first closes the flow regulating valve, and then shuts down the atomizing component after a delay of 50ms to 100ms.

9. The high-pressure atomization branch opening control method according to claim 1, characterized in that, Electronic atomizers also include an airflow sensing module; The main control module collects suction parameters in real time through the airflow sensor module. The suction parameters include suction airflow intensity and suction duration. The main control module determines a valid suction action and activates the atomizing component and flow regulating valve only when both the suction airflow intensity and suction duration meet the preset thresholds.

10. An electronic atomizer, characterized in that, The electronic atomizer includes a main control module, an atomizing component, a high-pressure atomizing branch, and a flow regulating valve; the atomizing component is connected to the high-pressure atomizing branch, and the flow regulating valve is connected to the high-pressure atomizing branch; the main control module is signal-connected to the atomizing component and the flow regulating valve respectively; the main control module is used to execute the high-pressure atomizing branch opening control method according to any one of claims 1 to 3; Alternatively, the electronic atomizer includes a main control module, an atomizing component, a normal pressure atomizing branch, a high pressure atomizing branch, and a flow regulating valve; the atomizing component is connected to the normal pressure atomizing branch and the high pressure atomizing branch, and the flow regulating valve is connected to the high pressure atomizing branch; the main control module is signal-connected to the atomizing component and the flow regulating valve respectively; the main control module is used to execute the high pressure atomizing branch opening control method according to any one of claims 4 to 9.

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