Aerosol-generating system and aerosol generation control method

Abstract

The application provides an aerosol generating system and an aerosol generating control method, which are applied to the technical field of aerosol generation. The system comprises: a heating device, which comprises a heating sleeve and a central heating component, one end of the heating sleeve is open, and is used for inserting a substrate, the other end of the heating sleeve is connected with the central heating component, the central heating component extends to the open side along the axis of the heating sleeve, the heating sleeve is used for heating the outer periphery of the substrate, and the central heating component is used for heating the center of the substrate, so as to generate an aerosol; a heating source, which forms a closed heating circuit with the heating device, and is used for providing electric power to the heating device; a detector, which is used for detecting the circuit parameter of the heating device; and a controller, which is electrically connected with the detector and the heating source respectively, and is configured to: determine a temperature state parameter of the heating device based on the circuit parameter of the heating device; and adjust the output power of the heating source based on the temperature state parameter, so that the temperature of the substrate fluctuates in a wave form.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, specifically to an aerosol generation system and an aerosol generation control method. Background Technology

[0002] The heating device in the aerosol generation system heats the aerosol generation matrix, causing at least a portion of the active substances in the matrix to volatilize and generate aerosols. Traditional heating methods have low utilization rates of the aerosol generation matrix.

[0003] With the advent of heating methods that simultaneously heat the center and circumference, the utilization rate of aerosol generation matrix has been greatly improved. However, the required energy is too high, sacrificing endurance and reducing ease of use. In related technologies, the aerosol generation output of aerosol-generated products is unstable because the temperature of the thermal inertia usually continues to decrease. Summary of the Invention

[0004] In view of the above problems, this application provides an aerosol generation system and an aerosol generation control method.

[0005] According to a first aspect of this application, an aerosol generation system is provided, comprising: a heating device including a heating sleeve and a central heating assembly, one end of the heating sleeve being open for inserting a matrix, the other end of the heating sleeve being connected to the central heating assembly, the central heating assembly extending axially along the heating sleeve toward the open side, the heating sleeve being used to heat the outer periphery of the matrix and the central heating assembly being used to heat the center of the matrix to generate an aerosol; a heating source forming a closed heating circuit with the heating device for providing electrical power to the heating device; a detector disposed on the heating circuit for detecting circuit parameters of the heating device; and a controller electrically connected to the detector and the heating source respectively, configured to: determine temperature state parameters of the heating device based on the circuit parameters of the heating device; and adjust the output power of the heating source based on the temperature state parameters to cause the temperature of the matrix to fluctuate in a wave-like manner.

[0006] According to an embodiment of this application, the detector includes: a detection resistor disposed on the heating circuit and connected in series with the heating appliance; a first voltage measuring device for measuring the voltage across the detection resistor to obtain a first voltage signal; and a second voltage measuring device for measuring the voltage across the heating source to obtain a second voltage signal.

[0007] According to an embodiment of this application, the controller is configured to determine the temperature state parameters of the heating appliance based on circuit parameters, specifically including: determining the current of the heating circuit based on a first voltage signal and the resistance value of a detection resistor; determining the voltage signal of the heating appliance based on a first voltage signal and a second voltage signal; determining the current resistance of the heating appliance based on the current and voltage signals; and determining the temperature state parameters of the heating appliance based on the current resistance and a reference resistance.

[0008] According to an embodiment of this application, the controller is further configured to use a first voltage signal transmitted via a first voltage meter and a second voltage signal transmitted via a second voltage meter as circuit parameters of the heating appliance.

[0009] According to an embodiment of this application, the controller is configured to adjust the output power of the heating source based on temperature state parameters, so that the temperature of the substrate fluctuates in a wave-like manner. Specifically, this includes repeating the following heating phase, high-temperature holding phase, cooling phase, and low-temperature holding phase: In the heating phase, the output power of the heating source is controlled to a first output power to heat the substrate to a first temperature threshold using a heating device; in the high-temperature holding phase, the output power of the heating source is controlled to decrease to a second output power to maintain the substrate temperature at the first temperature threshold; in the cooling phase, the output power of the heating source is controlled to decrease to a third output power to cool the substrate to the second temperature threshold; and in the low-temperature holding phase, the output power of the heating source is stopped to maintain the substrate temperature at the second temperature threshold.

[0010] According to an embodiment of this application, the aerosol generation system further includes a switch disposed on the heating circuit for turning the heating circuit off or on.

[0011] According to an embodiment of this application, the controller is configured to control the high-temperature holding phase, which includes: entering the high-temperature holding phase and controlling the switch to open and close intermittently so that the temperature of the substrate is maintained at a first temperature threshold.

[0012] According to embodiments of this application, the duration of the high-temperature holding phase includes 1-15 seconds.

[0013] According to embodiments of this application, the duration of the low-temperature holding phase includes at least one of the following: the temperature of the heating appliance is lower than a second temperature threshold; the duration of the low-temperature holding phase is longer than a predetermined duration threshold.

[0014] A second aspect of this application provides an aerosol generation control method, comprising: a controller that determines temperature state parameters of a heater based on circuit parameters of the heater; and an controller that adjusts the output power of a heating source based on the temperature state parameters so that the temperature of the substrate fluctuates in a wave-like manner.

[0015] According to embodiments of this application, by setting a heating appliance that simultaneously includes a heating sleeve and a central heating component, the center and circumferential areas of the substrate can be heated synchronously, avoiding uneven heat distribution caused by a single heating method, and ensuring more thorough heating of the entire substrate, thereby significantly improving substrate utilization. A detector collects circuit parameters of the heating circuit in real time, and the controller determines the temperature status parameters of the heating appliance based on these parameters. Accurate temperature feedback can be achieved without additional temperature sensors, improving the reliability and response speed of temperature control. The controller adjusts the output power of the heating source based on the temperature status parameters, causing the substrate temperature to fluctuate in a wave-like manner, thereby avoiding burnt smells caused by continuous high-temperature baking, reducing ineffective energy consumption, extending the operating time of the heating appliance, and ensuring the stability of aerosol generation. Attached Figure Description

[0016] The above-mentioned contents, other objects, features and advantages of this application will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0017] Figure 1 A schematic diagram of an aerosol generation system according to an embodiment of this application is shown.

[0018] Figure 2 A schematic cross-sectional view of a heater according to an embodiment of this application is shown;

[0019] Figure 3 A schematic diagram of an aerosol generation system according to another embodiment of this application is shown.

[0020] Figure 4 A flowchart illustrating the controller controlling temperature according to an embodiment of this application is shown schematically.

[0021] Figure 5 A schematic diagram of an aerosol generation system according to yet another embodiment of this application is shown.

[0022] Figure 6 A block diagram illustrating various control modes according to embodiments of this application is shown schematically;

[0023] Figure 7 A flowchart illustrating an aerosol generation control method according to an embodiment of this application is shown schematically; and

[0024] Figure 8 A block diagram schematically illustrates a controller suitable for implementing an aerosol generation control method according to an embodiment of this application. Detailed Implementation

[0025] The embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of this application. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of this application for ease of explanation. However, it will be apparent that one or more embodiments may be implemented without these specific details. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of this application.

[0026] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0027] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0028] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0029] In the technical solution of this application, the user information (including but not limited to user personal information, user image information, user device information, such as location information) and data (including but not limited to data used for analysis, stored data, and displayed data) involved are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, storage, use, processing, transmission, provision, disclosure, and application of related data all comply with relevant laws, regulations, and standards, take necessary confidentiality measures, do not violate public order and good morals, and provide corresponding operation entry points for users to choose to authorize or refuse.

[0030] In scenarios involving automated decision-making using personal information, the methods, devices, and systems provided in this application all offer users corresponding entry points for choosing to agree to or reject the automated decision-making results. If the user chooses to reject, the process proceeds to the expert decision-making stage. Here, "automated decision-making" refers to the activity of automatically analyzing and evaluating an individual's behavioral habits, interests, or economic, health, and credit status through computer programs, and then making a decision. Here, "expert decision-making" refers to the activity of making decisions by personnel who specialize in a particular field, possess specialized experience, knowledge, and skills, and have reached a certain level of professional expertise.

[0031] This application provides an aerosol generation system, comprising: a heating device including a heating sleeve and a central heating assembly; one end of the heating sleeve is open for inserting a matrix, and the other end of the heating sleeve is connected to the central heating assembly, which extends axially along the heating sleeve toward the open side; the heating sleeve is used to heat the outer periphery of the matrix, and the central heating assembly is used to heat the center of the matrix to generate an aerosol; a heating source forming a closed heating circuit with the heating device for providing electrical power to the heating device; a detector disposed on the heating circuit for detecting circuit parameters of the heating device; and a controller electrically connected to the detector and the heating source, configured to: determine temperature state parameters of the heating device based on the circuit parameters of the heating device; and adjust the output power of the heating source based on the temperature state parameters to cause the temperature of the matrix to fluctuate in a wave-like manner.

[0032] Figure 1 A schematic diagram of an aerosol generation system according to an embodiment of this application is shown.

[0033] like Figure 1 As shown, the aerosol generation system 100 of this embodiment includes a heating device 110, a heating source 120, a detector 130, and a controller 140.

[0034] The heating appliance 110 includes a heating sleeve and a central heating assembly.

[0035] The heating source 120 forms a closed heating circuit with the heating appliance 110 and is used to provide electrical power to the heating appliance 110.

[0036] The detector 130 is installed on the heating circuit and is used to detect the circuit parameters of the heating appliance 110;

[0037] The controller 140, which is electrically connected to the detector 130 and the heating source 120 respectively, is configured to: determine the temperature status parameters of the heating appliance 110 based on the circuit parameters of the heating appliance 110; and adjust the output power of the heating source 120 based on the temperature status parameters so that the temperature of the substrate fluctuates in a wave-like manner.

[0038] Figure 2 A schematic cross-sectional view of a heater according to an embodiment of this application is shown.

[0039] like Figure 2 As shown, the heating device in this embodiment includes a heating sleeve 111 and a central heating component 112. One end of the heating sleeve 111 is open for inserting into the substrate, and the other end of the heating sleeve 111 is connected to the central heating component 112. The central heating component 112 extends axially along the heating sleeve 111 toward the open side. The heating sleeve 111 is used to heat the outer periphery of the substrate, and the central heating component 112 is used to heat the center of the substrate to generate an aerosol.

[0040] In this embodiment, the heating device can be used to receive and heat a matrix, such as a tobacco matrix or a non-tobacco matrix containing aerosol formations, to generate an aerosol. Optionally, the heating device may include a heating sleeve and a central heating assembly. One end of the heating sleeve is configured as an open structure for receiving the matrix in a plug-in manner; the other end of the heating sleeve is mechanically connected to the central heating assembly. The central heating assembly extends along the axial direction of the heating sleeve toward the open side, i.e., it extends from the bottom end of the heating sleeve toward the open end. When the heating device is in operation, the matrix can be simultaneously fitted onto the inner circumference of the heating sleeve and the outer circumference of the central heating assembly. Traditional aerosol generation systems employ heating methods including central heating and circumferential heating. Central heating primarily heats the central portion of the matrix close to the heating source, making it difficult for heat to transfer to the surrounding areas. Circumferential heating primarily heats the peripheral portion of the matrix close to the heating source, making it difficult for heat to transfer to the central area. Traditional heating methods have low matrix utilization rates. In this embodiment, the heating sleeve is configured to heat the outer peripheral region of the substrate, and the central heating component is configured to heat the central region of the substrate, thereby forming a heat distribution field with combined central and circumferential action inside the substrate, achieving three-dimensional and uniform heating of the substrate to generate aerosol.

[0041] The heating source may include a rechargeable lithium-ion battery, a lithium iron phosphate battery, or a lithium cobalt oxide battery, etc. The heating source is electrically connected to the heating appliance and together they form a closed heating circuit. The heating source provides electrical power to the heating appliance to achieve resistance heating. For example, the heating power of the heating appliance can be adjusted by controlling the magnitude or duty cycle of the input current.

[0042] A detector is installed on the heating circuit to detect the circuit parameters of the heating appliance. For example, using a resistor connected in series with the heating appliance, the detector calculates the real-time current flowing through the heating appliance by measuring the voltage drop across the resistor and combining this with the known resistance value; the detector can also measure the voltage across the heating appliance. In this example, the detector can obtain at least two circuit parameters: current and voltage. These circuit parameters can be transmitted to the controller in real time.

[0043] The controller is electrically connected to both the detector and the heating source. The controller can be configured to execute the following control logic:

[0044] Based on the circuit parameters of the heater acquired by the detector, the controller can approximately calculate the current temperature status parameters of the heater. These temperature status parameters characterize the current real-time temperature value of the heater. The current real-time temperature value of the heater can indirectly reflect the heating temperature of the substrate.

[0045] Based on temperature parameters, the controller can adjust the output power of the heating source to cause the substrate temperature to fluctuate in a wave-like manner during heating. This wave-like fluctuation can be understood as the controller not maintaining a constant temperature at a single setpoint during at least one heating stage, but rather allowing the temperature to periodically or non-periodically rise and fall between preset maximum and minimum temperature thresholds, forming a wave-like temperature change curve. The controller can achieve this wave-like fluctuation using methods including, but not limited to, pulse width modulation (PWM) to control the on / off duty cycle of the heating source, or linear adjustment of the output current or voltage amplitude of the heating source. For example, during a certain time period, the controller controls the heating source to intermittently supply energy to the heating appliance multiple times, so that the highest temperature reached by the heating appliance after each energy supply is higher than the temperature of the previous time period, while during periods when energy supply stops, it naturally cools to a lower temperature, thus forming the wave-like fluctuation.

[0046] According to embodiments of this application, by setting a heating appliance that simultaneously includes a heating sleeve and a central heating component, the center and circumferential areas of the substrate can be heated synchronously, avoiding uneven heat distribution caused by a single heating method, and ensuring more thorough heating of the entire substrate, thereby significantly improving substrate utilization. A detector collects circuit parameters of the heating circuit in real time, and the controller determines the temperature status parameters of the heating appliance based on these parameters. Accurate temperature feedback can be achieved without additional temperature sensors, improving the reliability and response speed of temperature control. The controller adjusts the output power of the heating source based on the temperature status parameters, causing the substrate temperature to fluctuate in a wave-like manner, thereby avoiding burnt smells caused by continuous high-temperature baking, reducing ineffective energy consumption, extending the operating time of the heating appliance, and ensuring the stability of aerosol generation.

[0047] Figure 3 A schematic diagram of an aerosol generation system according to another embodiment of this application is shown.

[0048] like Figure 3As shown, the detector in the aerosol generation system 100 includes a detection resistor 131, a first voltage measuring device 132, and a second voltage measuring device 133.

[0049] The detection resistor 131 is set on the heating circuit and connected in series with the heating appliance 110.

[0050] The first voltage measuring device 132 is used to measure the voltage across the detection resistor 131 to obtain the first voltage signal.

[0051] The second voltage measuring device 133 is used to measure the voltage across the heating source 120 to obtain a second voltage signal.

[0052] In this embodiment, the sensing resistor can be disposed on the heating circuit and connected in series with the heating appliance. The sensing resistor can be understood as a precision resistive element with a known precise resistance value. This resistance value is much smaller than the resistance value of the heating appliance at room temperature to avoid affecting the power distribution of the heating circuit. For example, when the resistance of the heating appliance is between 0.5Ω and 2Ω, the resistance value of the sensing resistor can be selected from 5mΩ to 50mΩ. The sensing resistor is preferably made of a metal with an extremely low temperature coefficient to ensure that its resistance remains highly stable within the operating temperature range.

[0053] The first voltage measuring device can be electrically connected across the two ends of the sensing resistor to measure the voltage across the resistor and generate a first voltage signal. It is understood that the resistance of the sensing resistor is known and stable, and the first voltage signal is proportional to the current flowing through the heating circuit.

[0054] The second voltage measuring device can be electrically connected to both ends of the heating source to measure the voltage across the heating source and generate a second voltage signal. This second voltage signal characterizes the output voltage of the heating source under the current load. Based on the first and second voltage signals, the voltage across the heating appliance can be obtained.

[0055] According to the embodiments of this application, through the cooperation of the three components of the detection resistor, the first voltage measuring device and the second voltage measuring device, the controller can accurately obtain the voltage and current parameters of the heating device without directly contacting the high-temperature heating element, thereby calculating the resistance of the heating device and deducing the temperature of the heating device. This effectively reduces hardware costs and circuit complexity, avoids response delay, drift or failure of the temperature sensor due to long-term exposure to high-temperature environment, and significantly improves the reliability of temperature detection.

[0056] According to an embodiment of this application, the controller is further configured to use a first voltage signal transmitted via a first voltage meter and a second voltage signal transmitted via a second voltage meter as circuit parameters of the heating appliance.

[0057] In this embodiment, the controller is electrically connected to a first voltage measuring device and a second voltage measuring device, respectively, and is configured to receive a first voltage signal transmitted by the first voltage measuring device and a second voltage signal transmitted by the second voltage measuring device, using these two voltage signals as circuit parameters of the heating appliance. It is understood that circuit parameters are electrical quantities used to characterize the operating state of the heating circuit, including but not limited to voltage signals. The first voltage signal reflects the voltage drop flowing through the detection resistor, and this voltage drop is proportional to the real-time current in the heating circuit; thus, the first voltage signal indirectly characterizes the magnitude of the current in the heating circuit. The second voltage signal reflects the output voltage across the heating source and is the total driving voltage of the heating circuit. The controller uses both the first and second voltage signals as circuit parameters of the heating appliance, and uses these circuit parameters as input parameters for calculating the temperature of the heating appliance.

[0058] According to the embodiments of this application, by using the first voltage signal and the second voltage signal together as the circuit parameters of the heating appliance, the controller does not need to be configured with an additional current sensor or temperature sensor. The temperature of the heating appliance can be determined by receiving the above two voltage signals, which simplifies the signal acquisition channel and data processing flow, reduces the computing burden and hardware interface requirements of the controller, and improves the system reliability and service life.

[0059] According to an embodiment of this application, the controller is configured to determine the temperature state parameters of the heating appliance based on circuit parameters, specifically including: determining the current of the heating circuit based on a first voltage signal and the resistance value of a detection resistor; determining the voltage signal of the heating appliance based on a first voltage signal and a second voltage signal; determining the current resistance of the heating appliance based on the current and voltage signals; and determining the temperature state parameters of the heating appliance based on the current resistance and a reference resistance.

[0060] In this embodiment, the controller acquires a first voltage signal from a first voltage measuring device and a pre-stored resistance value of a sensing resistor. Using Ohm's law, the current in the heating circuit can be calculated based on the first voltage signal and the resistance value of the sensing resistor. This current is the series current flowing through the heating appliance and the sensing resistor.

[0061] The controller acquires a second voltage signal from a second voltage measuring device, which represents the voltage across the heating source. It can be understood that the sensing resistor, connected in series with the heating appliance, is then connected in parallel across the heating source. Therefore, the voltage signal of the heating appliance can be calculated by subtracting the first voltage signal from the second voltage signal.

[0062] The controller uses Ohm's law to determine the current resistance of the heating appliance based on the current in the heating circuit and the voltage signal from the heating appliance. This current resistance reflects the resistance of the heating appliance at its real-time operating temperature.

[0063] The controller acquires the reference resistance of the heating appliance at a reference temperature, for example, the reference resistance at 25°C is represented as R25. Based on the reference resistance and the temperature coefficient of resistance (TCR) of the heating material, the temperature state parameters of the heating appliance are calculated. The temperature state parameters are the current real-time temperature values ​​of the heating appliance, used to characterize the degree of heating of the heating element or the substrate heated by the heating appliance.

[0064] According to embodiments of this application, the current of the heating circuit is determined based on a first voltage signal and the resistance value of a detection resistor. The voltage signal of the heating appliance is calculated based on the first and second voltage signals. The current and voltage signals are then used to determine the current resistance of the heating appliance, and the temperature status parameters are determined in conjunction with a reference resistor. The real-time temperature value of the heating appliance can be indirectly obtained using the electrical parameters of the heating circuit itself, significantly improving the reliability and durability of temperature detection. By measuring the current and voltage signals, signal conditioning and compensation steps are reduced, resulting in high real-time performance and high repeatability of the temperature feedback.

[0065] Figure 4 A flowchart illustrating the controller controlling temperature according to an embodiment of this application is shown.

[0066] like Figure 4 As shown, after the heating stage S410 ends, the temperature holding stage S420 begins; after the temperature holding stage S420 ends, the temperature cooling stage S430 begins; after the temperature cooling stage S430 ends, the temperature holding stage S440 begins. After the temperature holding stage S440 ends, the temperature heating stage S410 begins again, and the process repeats to the next temperature stage.

[0067] According to an embodiment of this application, the controller is configured to adjust the output power of the heating source based on temperature state parameters, so that the temperature of the substrate fluctuates in a wave-like manner. Specifically, this includes repeating the following heating phase, high-temperature holding phase, cooling phase, and low-temperature holding phase: In the heating phase, the output power of the heating source is controlled to a first output power to heat the substrate to a first temperature threshold using a heating device; in the high-temperature holding phase, the output power of the heating source is controlled to decrease to a second output power to maintain the substrate temperature at the first temperature threshold; in the cooling phase, the output power of the heating source is controlled to decrease to a third output power to cool the substrate to the second temperature threshold; and in the low-temperature holding phase, the output power of the heating source is stopped to maintain the substrate temperature at the second temperature threshold.

[0068] In this embodiment, during the heating phase, the controller controls the output power of the heating source to a first output power. The first output power can be understood as full power or a preset high power value, such as 100% or 80% of the rated power. The first output power is sufficient to allow the heating device to rapidly heat the substrate to a preset first temperature threshold within a short time. The heating phase allows the substrate to quickly reach a temperature level sufficient to generate sufficient aerosols.

[0069] Once the substrate temperature reaches the first temperature threshold, a high-temperature holding phase begins. The controller reduces the output power of the heating source to a second output power. This second output power is significantly lower than the first output power, for example, 30% to 50% of the rated power. The second output power is set precisely to compensate for the heat loss of the heating appliance after reaching the first temperature threshold, thus maintaining the substrate temperature near the first temperature threshold without further increase, achieving stable high-temperature holding.

[0070] After the high-temperature holding phase ends, a cooling phase begins, during which the controller further reduces the output power of the heating source to a third output power. This third output power is lower than the second output power, for example, 5% to 10% of the rated power. The third output power is limited to a level insufficient to prevent the substrate from cooling down naturally, thus allowing for extremely low power to be reserved for maintaining the detector's circuit parameters or preventing excessive temperature drops, while allowing the substrate to cool naturally. The cooling phase continues until the substrate temperature drops to a preset second temperature threshold.

[0071] Once the substrate temperature drops to the second temperature threshold, a low-temperature holding phase begins. The controller then stops the heating source from outputting power, reducing the output power to zero. This allows the substrate temperature to be maintained near the second temperature threshold without active heating. It is understandable that, due to the thermal inertia of both the heating device and the substrate, the temperature will not immediately continue to drop sharply after heating stops, but will instead slowly change around the second temperature threshold over a period of time, thus achieving low-temperature holding.

[0072] After the low-temperature holding phase is completed, the controller re-enters the next heating phase and begins a new heating cycle. This cycle repeats until the entire heating process is completed, causing the substrate temperature to fluctuate periodically in a wave-like manner.

[0073] According to embodiments of this application, the controller repeatedly executes a heating phase, a high-temperature holding phase, a cooling phase, and a low-temperature holding phase, causing the substrate temperature to fluctuate periodically in a wave-like manner. During the heating phase, a first output power is used to rapidly heat the substrate to a first temperature threshold, ensuring rapid aerosol generation and sufficient release. During the high-temperature holding phase, a reduced second output power is used to maintain the temperature, preventing temperature overshoot that could lead to localized overheating and a burnt smell. Upon entering the cooling phase, a third output power is used to allow the substrate to naturally cool to a second temperature threshold. During the cooling phase, the third output power is limited to a level insufficient to stop the cooling, preventing excessive temperature drop due to thermal inertia overshoot caused by a complete power outage, thus preserving a reasonable starting point for the next heating phase. During the low-temperature holding phase, the heating source output power is stopped, maintaining the substrate temperature at the second temperature threshold, achieving low-temperature holding with zero power consumption and avoiding energy waste caused by continuous heating. Through the cycle of these four phases, stable aerosol release is ensured in each heating cycle, reducing overall average power consumption and balancing the consistency of aerosol generation with improved substrate utilization.

[0074] Figure 5 A schematic diagram of an aerosol generation system according to yet another embodiment of this application is shown.

[0075] like Figure 5 As shown, the aerosol generation system 100 also includes a switch 150.

[0076] Switch 150 is located on the heating circuit and is used to open or close the heating circuit.

[0077] In this embodiment, the aerosol generating device may further include a switch. The switch can be located on the heating circuit, connected in series in a closed loop formed by the heating source, the heating appliance, and the sensing resistor, and is used to open or close the heating circuit. When the controller controls the switch to be on, the heating circuit is closed, and the heating source supplies power to the heating appliance; when the controller controls the switch to be off, the heating circuit is open, and the heating source stops supplying power to the heating appliance. By controlling the switch to be on and off, the controller can adjust the average power input of the heating appliance to achieve wave-like temperature control.

[0078] According to embodiments of this application, by setting a switch controlled by a controller on the heating circuit, the controller can precisely switch whether the heating appliance is powered or not through on / off control. By adjusting the on and off duty cycles of the switch, the average output power of the heating appliance can be adjusted, eliminating the need for complex digital-to-analog conversion or power amplification circuits, further reducing hardware costs and circuit complexity, and providing an efficient and reliable physical execution means for wave-like power output control.

[0079] According to an embodiment of this application, the controller is configured to control the high-temperature holding phase, which includes: entering the high-temperature holding phase and controlling the switch to open and close intermittently so that the temperature of the substrate is maintained at a first temperature threshold.

[0080] In this embodiment, the controller is configured to intermittently turn the switch on and off during the high-temperature holding phase, so that the substrate temperature is maintained at a first temperature threshold. Intermittent on / off can be understood as the controller repeatedly performing the switching action of turning the switch on and off at a certain frequency and duty cycle. For example, when the temperature status parameter fed back by the detector shows that the substrate temperature is below the first temperature threshold, the controller controls the switch to turn on, allowing the heating source to supply power to the heating appliance, and the substrate temperature rises; when the temperature reaches or slightly exceeds the first temperature threshold, the controller controls the switch to turn off, causing the heating source to stop supplying power, and the substrate temperature is maintained or slowly decreases under the effect of thermal inertia. Through the alternating cycle of switching on and off, the controller dynamically maintains the substrate temperature near the first temperature threshold, achieving high-temperature holding. It is understood that the duty cycle of the intermittent on / off can be adjusted in real time according to the deviation between the current temperature and the first temperature threshold; for example, the duty cycle increases when the deviation is large and decreases when the deviation is small, to achieve precise temperature maintenance.

[0081] According to embodiments of this application, during the high-temperature holding phase, the substrate temperature is maintained at a first temperature threshold by intermittently opening and closing a control switch, rather than continuous full-power heating. This avoids temperature overshoot caused by continuous heating, allowing the substrate temperature to be dynamically maintained near the target value without deviating excessively, thus preventing the substrate from producing a burnt smell due to localized overheating. Intermittent opening and closing reduces the average power consumption during the high-temperature holding phase, thereby reducing energy consumption. By dynamically adjusting the duty cycle, it can adapt to appliances with different thermal insulation performance and different ambient temperatures, exhibiting good versatility.

[0082] According to embodiments of this application, the duration of the high-temperature holding phase includes 1-15 seconds.

[0083] In this embodiment, the duration of the high-temperature holding phase is configured to range from 1 to 15 seconds. The holding time can be understood as the duration from when the controller confirms that the substrate temperature has reached a first temperature threshold until the controller initiates the cooling phase; that is, the duration of the high-temperature holding phase. Within this holding time range, the substrate temperature is maintained near the first temperature threshold. For example, the holding time can be preset based on factors such as the type of substrate, the insulation performance of the heating appliance, and the user's desired flavor concentration, taking values ​​within the range of 1 to 15 seconds, such as 2 seconds, 5 seconds, 8 seconds, 10 seconds, or 12 seconds. Specifically, if the holding time is too short, such as less than 1 second, it is difficult to form a stable aerosol during the high-temperature holding phase; if the holding time is too long, such as exceeding 15 seconds, it may cause the substrate to be continuously baked at high temperatures, resulting in a burnt taste and increased energy consumption.

[0084] According to embodiments of this application, the duration of the high-temperature holding phase is limited to the range of 1-15 seconds. This ensures that the substrate can remain near the first temperature threshold for a sufficient time in each heating cycle, allowing the substrate to fully release and generate a stable amount of aerosol. This guarantees that users can obtain sufficient aerosol with a consistent taste during the high-temperature holding phase. Setting an upper limit on the holding time avoids over-baking of the substrate and the resulting burnt taste due to excessively long single high-temperature holding times, thus controlling energy consumption while ensuring consistent aerosol generation. The 1-15 second holding time range can adapt to different types of aerosol generation substrates and different users, demonstrating good compatibility and adaptability.

[0085] According to embodiments of this application, the duration of the low-temperature holding phase includes at least one of the following: the temperature of the heating appliance is lower than a second temperature threshold; the duration of the low-temperature holding phase is longer than a predetermined duration threshold.

[0086] In this embodiment, the duration of the cryogenic holding phase is determined based on at least one of the following conditions. One condition is that the temperature of the heating appliance is below a second temperature threshold. It is understood that the cryogenic holding phase begins when the substrate temperature drops to the second temperature threshold. During this phase, the substrate temperature is maintained near the second temperature threshold. When the temperature of the heating appliance drops below the second temperature threshold due to natural heat dissipation or external environmental factors, the cryogenic holding phase ends and the next heating phase begins, to avoid excessively low temperatures leading to interruption of aerosol release or excessive drop in substrate temperature. Another condition is that the duration of the cryogenic holding phase exceeds a preset predetermined duration threshold. The predetermined duration threshold can be a pre-set time parameter, such as 3s, 5s, or 10s. When the duration of the cryogenic holding phase exceeds the predetermined duration threshold, regardless of whether the current temperature is maintained near the second temperature threshold, the controller controls the termination of the cryogenic holding phase to avoid extending the heating interval due to waiting for the temperature to rise. It is understood that satisfying any one of the above conditions triggers the switch from the cryogenic holding phase to the heating phase.

[0087] In another embodiment, when both the high-temperature holding phase and the low-temperature holding phase exist simultaneously, the duration of the low-temperature holding phase can be in the range of 1-10 seconds.

[0088] According to embodiments of this application, by setting the duration of the low-temperature holding phase to at least one of the following: the temperature of the heating appliance is below a second temperature threshold, or the duration of the low-temperature holding phase is greater than a predetermined duration threshold, the controller can flexibly switch the temperature control phase according to actual operating conditions. When the temperature drops below the second temperature threshold due to thermal inertia or excessively rapid external heat dissipation, the low-temperature holding phase can end and the next heating phase can begin, avoiding insufficient or interrupted aerosol release due to excessively low matrix temperature, thus ensuring the stability of aerosol generation. By setting a predetermined duration threshold, the inability of the temperature to rise above the threshold for an extended period is avoided, ensuring the time controllability of the entire heating cycle and improving the efficiency and user satisfaction of the aerosol generation system.

[0089] Figure 6 A block diagram illustrating various control modes according to embodiments of this application is shown schematically.

[0090] like Figure 6 As shown, the controller can operate in four modes: mode 1, mode 2, mode 3, and mode 4.

[0091] The temperature stages of Mode 1 are set to heat to 320°C, maintain high temperature for 5 seconds, cool down to 260°C, and maintain low temperature for 0 seconds. The expected effect of Mode 1 is that the high temperature holding stage has sufficient energy and a large amount of smoke, and the cooling holding stage prevents scorching.

[0092] Mode 2 is set to heat to 300℃, maintain high temperature for 0s, cool down for 12s, and maintain low temperature for 3s. The expected effect of Mode 2 is to reduce the maximum temperature, maintain the taste through preheating, and save energy.

[0093] The temperature stages of Mode 3 are set to 8 seconds for heating, 2 seconds for maintaining high temperature, 260°C for cooling down, and 0 seconds for maintaining low temperature. The expected effect of Mode 3 is to control energy through heating duration and avoid temperature overshoot.

[0094] Mode 4 is set to heat to 310℃, maintain for 4 seconds, cool down to 250℃, and maintain for 2 seconds. The expected effect of Mode 4 is comprehensive control, a smoother temperature curve, and high consistency in taste.

[0095] By adjusting the temperature settings and duration of each control mode, a control mode with high consistency in aerosol generation is obtained.

[0096] Figure 7 A flowchart illustrating an aerosol generation control method according to an embodiment of this application is shown schematically.

[0097] like Figure 7As shown, the aerosol generation control method of this embodiment includes operations S710 to S720. The aerosol generation control method of this embodiment is executed by the controller 140 in the aerosol generation system 100.

[0098] In operation S710, the temperature status parameters of the heater are determined based on the circuit parameters of the heater.

[0099] When operating the S720, the output power of the heating source is adjusted based on the temperature status parameters so that the temperature of the substrate fluctuates in a wave-like manner.

[0100] According to embodiments of this application, in such Figure 7 The operation S710 shown may specifically include: determining the current of the heating circuit based on the first voltage signal and the resistance value of the detection resistor; determining the voltage signal of the heating appliance based on the first voltage signal and the second voltage signal; determining the current resistance of the heating appliance based on the current and voltage signals; and determining the temperature status parameters of the heating appliance based on the current resistance and the reference resistance.

[0101] According to embodiments of this application, in such Figure 7 Before the operation S710 shown is performed, the aerosol generation control method further includes: using a first voltage signal transmitted via a first voltage measuring device and a second voltage signal transmitted via a second voltage measuring device as circuit parameters of the heating appliance.

[0102] According to embodiments of this application, in such Figure 7 The operation S720 shown may specifically include repeating the following heating phase, high temperature holding phase, cooling phase, and low temperature holding phase: entering the heating phase, controlling the output power of the heating source to a first output power to heat the substrate to a first temperature threshold using the heating device; entering the high temperature holding phase, controlling the output power of the heating source to a second output power to maintain the temperature of the substrate at the first temperature threshold; entering the cooling phase, controlling the output power of the heating source to a third output power to cool the substrate to the second temperature threshold; entering the low temperature holding phase, stopping the output power of the heating source to maintain the temperature of the substrate at the second temperature threshold.

[0103] According to embodiments of this application, in such Figure 7 Before the operation S720 shown is performed, the aerosol generation control method further includes: the controller is configured to enter a high-temperature holding phase, and the control switch is intermittently opened and closed so that the temperature of the matrix is ​​maintained at a first temperature threshold.

[0104] According to embodiments of this application, in such Figure 7 After the operation S720 is performed, the aerosol generation control method further includes: the duration of the high temperature holding phase is 1-15 seconds.

[0105] According to embodiments of this application, in such Figure 7 After the operation S720 is performed, the aerosol generation control method further includes: the duration of the low temperature holding phase includes at least one of the following: the temperature of the heating appliance is lower than a second temperature threshold; the duration of the low temperature holding phase is longer than a predetermined duration threshold.

[0106] Figure 8 A block diagram schematically illustrates a controller suitable for implementing an aerosol generation control method according to an embodiment of this application.

[0107] like Figure 8 As shown, the controller according to an embodiment of this application includes a processor 801, which can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 802 or a program loaded from storage portion 808 into random access memory (RAM) 803. The processor 801 may include, for example, a general-purpose microprocessor (e.g., a CPU), an instruction set processor and / or an associated chipset and / or a special-purpose microprocessor (e.g., an application-specific integrated circuit (ASIC)), etc. The processor 801 may also include onboard memory for caching purposes. The processor 801 may include a single processing unit or multiple processing units for performing different actions of the method flow according to an embodiment of this application.

[0108] RAM 803 stores various programs and data required for controller operation. Processor 801, ROM 802, and RAM 803 are interconnected via bus 804. Processor 801 executes various operations of the method flow according to embodiments of this application by executing programs in ROM 802 and / or RAM 803. It should be noted that the programs may also be stored in one or more memories other than ROM 802 and RAM 803. Processor 801 may also execute various operations of the method flow according to embodiments of this application by executing programs stored in said one or more memories.

[0109] According to embodiments of this application, the controller may further include an input / output (I / O) interface 805, which is also connected to a bus 804. The controller may also include one or more of the following components connected to the input / output (I / O) interface 805: an input section 806 including a keyboard, mouse, etc.; an output section 807 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 808 including a hard disk, etc.; and a communication section 809 including a network interface card such as a LAN card, modem, etc. The communication section 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to the input / output (I / O) interface 805 as needed. A removable medium 811, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on the drive 810 as needed so that computer programs read from it can be installed into the storage section 808 as needed.

[0110] This application also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiments; or it may exist independently and not assembled into the device / apparatus / system. The computer-readable storage medium carries one or more programs, which, when executed, implement the method according to the embodiments of this application.

[0111] According to embodiments of this application, the computer-readable storage medium can be a non-volatile computer-readable storage medium, such as including but not limited to: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this application, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. For example, according to embodiments of this application, the computer-readable storage medium may include ROM 802 and / or RAM 803 and / or one or more memories other than ROM 802 and RAM 803 described above.

[0112] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0113] Those skilled in the art will understand that the features described in the various embodiments of this application can be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in this application. In particular, the features described in the various embodiments of this application can be combined and / or combined in various ways without departing from the spirit and teachings of this application. All such combinations and / or combinations fall within the scope of this application.

[0114] The embodiments of this application have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of this application. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. Without departing from the scope of this application, those skilled in the art can make various substitutions and modifications, all of which should fall within the scope of this application.

Claims

1. An aerosol generation system, characterized in that, The aerosol generation system includes: A heating appliance includes a heating sleeve and a central heating assembly. One end of the heating sleeve is open for insertion into a substrate, and the other end of the heating sleeve is connected to the central heating assembly. The central heating assembly extends axially along the heating sleeve toward the open side. The heating sleeve is used to heat the outer periphery of the substrate, and the central heating assembly is used to heat the center of the substrate to generate an aerosol. A heating source, forming a closed heating circuit with the heating appliance, is used to provide electrical power to the heating appliance; A detector is installed on the heating circuit to detect the circuit parameters of the heating appliance; The controller, electrically connected to the detector and the heating source respectively, is configured to: determine the temperature state parameters of the heating appliance based on the circuit parameters of the heating appliance; and adjust the output power of the heating source based on the temperature state parameters so that the temperature of the substrate fluctuates in a wave-like manner.

2. The system according to claim 1, characterized in that, The detector includes: A detection resistor is installed on the heating circuit and connected in series with the heating appliance; A first voltage measuring device is used to measure the voltage across the detection resistor to obtain a first voltage signal; The second voltage measuring device is used to measure the voltage across the heating source to obtain a second voltage signal.

3. The system according to claim 2, characterized in that, The controller is also configured to: The first voltage signal transmitted via the first voltage measuring device and the second voltage signal transmitted via the second voltage measuring device are used as the circuit parameters of the heating appliance.

4. The system according to claim 3, characterized in that, The controller is configured to determine the temperature status parameters of the heating appliance based on the circuit parameters, specifically including: The current of the heating circuit is determined based on the first voltage signal and the resistance value of the detection resistor; The voltage signal of the heating appliance is determined based on the first voltage signal and the second voltage signal; Based on the current and voltage signals, determine the current resistance of the heating appliance; and The temperature state parameters of the heating appliance are determined based on the current resistance and the reference resistance.

5. The system according to claim 1, characterized in that, The controller is configured to adjust the output power of the heating source based on the temperature state parameters, so that the temperature of the substrate fluctuates in a wave-like manner, specifically including repeating the following heating phase, high temperature holding phase, cooling phase, and low temperature holding phase: Upon entering the heating stage, the output power of the heating source is controlled to a first output power so that the substrate can be heated to a first temperature threshold using the heating device. Upon entering the high-temperature holding stage, the output power of the heating source is reduced to the second output power so that the temperature of the substrate is maintained at the first temperature threshold. During the cooling phase, the output power of the heating source is reduced to a third output power so that the substrate is cooled to a second temperature threshold. Entering the low-temperature holding phase, the output power of the heating source is stopped so that the temperature of the substrate is maintained at the second temperature threshold.

6. The system according to claim 5, characterized in that, The aerosol generation system also includes: A switch is provided on the heating circuit to open or close the heating circuit.

7. The system according to claim 6, characterized in that, The controller is configured for control during the high-temperature holding phase, including: During the high-temperature holding phase, the switch is controlled to open and close intermittently so that the temperature of the substrate is maintained at the first temperature threshold.

8. The system according to claim 5 or 6, characterized in that, The duration of the high-temperature holding phase includes 1-15 seconds.

9. The system according to claim 5, characterized in that, The duration of the cryogenic preservation phase includes at least one of the following: The temperature of the heater is lower than the second temperature threshold. The duration of the cryogenic preservation phase is longer than a predetermined duration threshold.

10. A method for controlling aerosol generation, characterized in that, The method, applied to the aerosol generation system according to any one of claims 1 to 9, comprises: The controller determines the temperature status parameters of the heater based on the circuit parameters of the heater; and Based on the temperature state parameters, the output power of the heating source is adjusted so that the temperature of the substrate fluctuates in a wave-like manner.

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