Temperature control method for aerosol generation device

Abstract

This application provides a temperature control method for an aerosol generating device, used to heat an aerosol generating product including a metal inductor. The method includes a monitoring stage, a preheating stage, and a heat preservation stage arranged sequentially in a time sequence. During the monitoring stage, a linear relationship curve between temperature and electrical parameters is acquired. The real-time temperature of the metal inductor is determined based on its real-time electrical parameters. This temperature control method allows for temperature detection during the heating process, thus determining the real-time temperature of the metal inductor and facilitating temperature control of the aerosol generating device. Furthermore, it eliminates the need for separate thermocouples or thermistors, resulting in a simple aerosol generating device structure and easy replacement of the aerosol generating product.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, and in particular to a temperature control method for aerosol generation apparatus. Background Technology

[0002] A heated but non-combustible aerosol generating device includes an induction coil. The induction coil contains a heating chamber to hold the aerosol-generating product. A sensor is placed inside or around the aerosol-generating product and heated by the electromagnetic waves from the coil. The heat from the sensor is conducted to the aerosol-generating product, which then heats the product to produce aerosol for the user to inhale. However, this type of induction-heated aerosol generating product typically requires thermocouples or thermistors for temperature control, making the aerosol generating device structurally complex and reducing its temperature control flexibility.

[0003] Application content

[0004] To address the issue that induction-heated aerosol generating products typically require thermocouples or thermistors for temperature control, resulting in complex structures and poor temperature control flexibility in aerosol generating devices.

[0005] This application provides a temperature control method for an aerosol generating apparatus, used to heat an aerosol generating product including a metal sensing element. The heating stage of the aerosol generating product includes: a monitoring stage, a preheating stage, and a heat preservation stage arranged sequentially in time sequence.

[0006] The control method includes: during the monitoring phase, acquiring a linear relationship curve between temperature and electrical parameters; during the preheating phase and the heat preservation phase, determining the real-time temperature of the metal sensing element based on its real-time electrical parameters.

[0007] This application provides a temperature control method for an aerosol generating device. In the step of acquiring the linear relationship curve between temperature and electrical parameters during the monitoring phase, the temperature control method for the aerosol generating device specifically includes:

[0008] The first and second Curie temperatures of the metal induction element are obtained.

[0009] The heating component of the aerosol generating device is activated to obtain the electrical parameters of the metal induction element;

[0010] Among the electrical parameters, a first electrical parameter and a second electrical parameter are found, and a first endpoint is determined by the first Curie temperature and the first electrical parameter, and a second endpoint is determined by the second Curie temperature and the second electrical parameter. A linear relationship curve is established based on the first endpoint and the second endpoint.

[0011] Based on the linear relationship curve, determine the correspondence between electrical parameters and temperature in the middle section of the curve;

[0012] The real-time temperature of the metal sensor is determined based on the linear relationship curve and the real-time electrical parameters of the metal sensor.

[0013] This application provides a temperature control method for an aerosol generating device. After determining the real-time temperature of the metal sensor based on the linear relationship curve and the real-time electrical parameters of the metal sensor, the control method further includes controlling the electrical parameters of the aerosol generating device so that the real-time temperature is maintained within a predetermined range.

[0014] This application provides a temperature control method for an aerosol generating device, wherein the predetermined range is 220℃-400℃.

[0015] This application provides a temperature control method for an aerosol generating device, wherein the electrical parameters include resistance, inductance, or current.

[0016] This application provides a temperature control method for an aerosol generating device. The steps of activating the heating assembly of the aerosol generating device and acquiring the electrical parameters of the metal induction element specifically include:

[0017] The electrical parameters were obtained sequentially according to a time series.

[0018] This application provides a temperature control method for an aerosol generating device, wherein the metal sensing element comprises a nickel alloy.

[0019] This application provides a temperature control method for an aerosol generating device, wherein the nickel alloy has a nickel content of 45%-100%.

[0020] This application provides a temperature control method for an aerosol generating apparatus, the aerosol generating apparatus including an electromagnetic coil, the electromagnetic coil defining a heating chamber into which the aerosol generating article can be inserted.

[0021] This application provides a temperature control method for an aerosol generating apparatus, wherein the aerosol generating product is columnar or sheet-like.

[0022] This application provides a temperature control method for an aerosol generating device. When the aerosol generating product is columnar, the aerosol generating product includes a tobacco layer, a metal sensing element, and a paper layer arranged sequentially from the inside to the outside.

[0023] When the aerosol generating product is in sheet form, the aerosol generating product includes a sheet-like tobacco layer and a metal sensing element disposed on the tobacco layer.

[0024] The temperature control method of the aerosol generating device of this application can detect the temperature before the aerosol generating device is heated, thereby determining the real-time temperature of the metal sensing element, which is convenient for controlling the temperature of the aerosol generating device. Furthermore, it does not require the separate installation of thermocouples or thermistors, the aerosol generating device has a simple structure, and the aerosol generated products are easy to replace. Attached Figure Description

[0025] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0026] Figure 1 A flowchart of a temperature control method for an aerosol generating apparatus according to an embodiment of this application;

[0027] Figure 2 The curves showing the inductance of metal inductors made of different materials as a function of temperature;

[0028] Figure 3 Curves showing the resistance of metal inductors made of different materials as a function of temperature;

[0029] Figure 4 This is a curve showing the change of current over time according to one embodiment of this application;

[0030] Figure 5 This is a curve showing how the temperature of a metal sensing element is controlled by controlling the current, according to one embodiment of this application. Detailed Implementation

[0031] 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.

[0032] The terms "first," "second," and "third" used in this application are for descriptive purposes only and should not be construed as indicating or implying the quantity or order of the indicated technical features relative to their importance. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship or movement of the components in a specific orientation (as shown in the accompanying drawings). If the specific orientation changes, the directional indication will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be intervening elements. When an element is referred to as being "connected to" another element, it can be directly connected to the other element, or there may be one or more intervening elements. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0035] When aerosol generating devices heat aerosol-generated products, the temperature values ​​and temperature variation ranges at different heating stages have varying degrees of impact on the quality and performance of the generated aerosol. Therefore, accurately understanding the temperature of the aerosol-generated product and precisely feeding this temperature back to the control unit is crucial. For example, in aerosol-generated products such as electrically heated cigarettes, the key stages that need to be monitored include the preheating stage and the heat preservation stage.

[0036] There are various heating methods for aerosol generating devices, such as resistance heating, airflow heating, infrared heating, and electromagnetic heating. Taking electromagnetic heating as an example, an electromagnetic coil is installed inside the aerosol generating device, and a metal induction element is installed inside the aerosol product. The power supply device in the aerosol generating device applies alternating current to the electromagnetic coil to generate a changing magnetic field in the space where the metal induction element is located. When the metal induction element is in the changing magnetic field, according to the law of electromagnetic induction, the magnetic flux passing through the metal induction element changes, inducing an electromotive force (EMF) inside the metal. Since metal is a conductor with relatively low resistance, a closed loop is formed inside the metal under the influence of the induced EMF, generating eddy currents. When the eddy currents flow inside the metal induction element, due to the resistance of the metal, electrical energy is converted into heat energy, thereby raising the temperature of the metal induction element. The heat generated by the metal induction element can heat the aerosol product. The temperature information at the location of the metal induction element is crucial for the temperature control of the aerosol generating device.

[0037] Based on the heating principle of electromagnetic heating, it is known that there is a corresponding relationship between the heat generated by the metal induction element and the electrical parameters (such as inductance, resistance, or current) at the electromagnetic coil. Thus, the heat generated by the metal induction element can be deduced from the electrical parameters of the electromagnetic coil, which is to say, the temperature of the metal induction element can be deduced.

[0038] In related technologies, after the aerosol generating device leaves the factory, its control logic is based on a preset temperature control curve. However, the setting of the control curve is difficult to adjust according to the temperature performance of the metal sensing element, which leads to inconsistent taste of the generated aerosol. For example, it is easy to have a bland flavor or a burnt taste.

[0039] Metal sensors are installed inside aerosol-generating products, with at least one sensor corresponding to each product. During the production of these sensors, limitations in the manufacturing process mean that even slight differences in parameters such as weight and size can significantly impact their temperature performance. Furthermore, metal sensors with different temperature performance require different temperature control profiles. In other words, during heating, different metal sensors exhibit different relationships between temperature and electrical parameters. Therefore, even when using the same control profile to heat aerosol-generating products, differences in the weight and size of the metal sensors can lead to inconsistent aerosol tastes. Consequently, adjusting the control profile of the aerosol generation device to match different metal sensors is a pressing technical problem that needs to be solved.

[0040] One embodiment of this application provides a temperature control method for an aerosol generating apparatus, used to heat an aerosol generating article including a metal sensing element. The heating stage of the aerosol generating article includes a monitoring stage, a preheating stage, and a holding stage arranged sequentially in time sequence.

[0041] The temperature control method for an aerosol generating device includes the following steps:

[0042] S10: During the monitoring phase, obtain the linear relationship curve between temperature and electrical parameters. It should be noted that during the heating process of the aerosol-generated product, a monitoring phase is added before the preheating phase. During this phase, the electrical parameters of the aerosol-generated product can be collected and processed to obtain corresponding temperature information.

[0043] S20: During the preheating and holding stages, the real-time temperature of the metal induction element is determined based on its real-time electrical parameters. Thus, the electrical parameters collected during the monitoring stage are specific to the aerosol-generating product, and the temperature performance exhibited matches these electrical parameters. It is understood that the monitoring stage is used to collect data matching the current aerosol-generating product, and then a control curve is developed based on the corresponding "temperature-electrical parameter" data; during the preheating and holding stages, the real-time temperature of the metal induction element is determined according to the "temperature-electrical parameter".

[0044] It is worth understanding that the steps above are numbered S10 and S20 for ease of description, but this is not a limitation on the order of the steps.

[0045] The temperature control method of the aerosol generating device of this application can perform "temperature-electrical parameter" detection during the heating process of the aerosol generating device, formulate a corresponding temperature control curve for the corresponding metal sensing element, so that the temperature control curve matches the metal sensing element, and determine the real-time temperature of the metal sensing element, improve the flexibility of the temperature control curve, facilitate precise temperature control, and eliminate the need for separate thermocouples or thermistors. The structure of the aerosol generating device is simple, and the aerosol generated product is easy to replace.

[0046] In one embodiment of this application, the monitoring phase is shorter than the preheating phase. In another embodiment, the monitoring phase can last 3-5 seconds. In yet another embodiment, the preheating phase can last less than or equal to 20 seconds. During the heating process, the aerosol generating device first detects the temperature in the monitoring phase to determine the "temperature-electrical parameter" curve of the metal sensor. In the subsequent preheating and heat preservation phases, the real-time temperature of the metal sensor can be controlled based on the "temperature-electrical parameter" curve.

[0047] In one embodiment of this application, electrical parameters may include resistance, inductance, or current. During the monitoring phase, electrical parameters such as resistance, inductance, or current of the metal sensing element of the aerosol generating device are recorded. In one embodiment of this application, these electrical parameters change over time, and the aerosol generating device is configured to record data on these changes over time.

[0048] In one embodiment of this application, when different metal sensors are placed in an electromagnetic field, the changes in the electrical parameters of the metal sensors vary to some extent.

[0049] like Figure 2 As shown, the inductance of the metal inductor increases linearly and monotonically within the range of 0-a℃, and decreases linearly and monotonically within the range of a℃-b℃. After reaching b℃, the magnetic properties of the metal inductor disappear. Figure 2 The graphs show the inductance of metal sensors made of three different metal materials as a function of temperature: SUS430, 1J50, and 1J85. 1J50 and 1J85 are iron-nickel soft magnetic alloys, while SUS430 is a magnetic ferritic stainless steel. These alloys generate heat and their inductance changes under a changing magnetic field. Therefore, the linear relationship between points A and B can be determined using the temperature Ta at point A, the inductance La at point A, and the temperature Tb and inductance Lb at point B. That is, point A is the first endpoint, and point B is the second endpoint. The graph clearly shows a relatively regular linear relationship between points A and B. This allows for the detection of the real-time inductance of the metal sensor, thus providing a real-time temperature reading.

[0050] In one embodiment of this application, because f = 1 / (2π(LC)) 1 / 2 As can be seen, by monitoring the resonant frequency of the metal inductor, the inductance of the metal inductor can be obtained. Therefore, a capacitor can be set in the aerosol generating device to monitor the resonant frequency of the metal inductor, thereby obtaining the inductance of the metal inductor and thus the temperature of the metal inductor.

[0051] like Figure 3 As shown, the resistance of the metal induction element increases linearly and monotonically within the range of 0-a℃, and decreases linearly and monotonically within the range of a℃-b℃. After reaching b℃, the magnetic properties of the metal induction element disappear. Figure 3The graphs show the inductance of metal inductors made of three different metallic materials as a function of temperature: SUS430, 1J50, and 1J85. 1J50 and 1J85 are iron-nickel soft magnetic alloys, while SUS430 is a magnetic ferritic stainless steel. These alloys generate heat and induce current under a changing magnetic field. Therefore, the linear relationship between points A and B can be determined using the temperature Ta at point A, the resistance Ra at point A, and the temperature Tb and resistance Rb at point B. That is, point A is the first endpoint, and point B is the second endpoint. The graph clearly shows a relatively regular linear relationship between points A and B. This allows for the detection of the real-time resistance of the metal inductor, thus providing a real-time temperature reading.

[0052] In one embodiment of this application, since U = IR, it is known that the resistance of the metal sensor can be obtained by monitoring the current or voltage of the metal sensor. Therefore, the real-time temperature of the metal sensor can be obtained by monitoring the current or voltage of the metal sensor.

[0053] In one embodiment of this application, the temperature control method for the aerosol generating device during the monitoring phase specifically includes:

[0054] First, the first and second Curie temperatures of the metal inductor are obtained. It should be noted that when the temperature of a metallic material is below the Curie temperature, it typically exhibits ferromagnetism or ferrimagnetism, with internal magnetic domains and spontaneously arranged magnetic moments, resulting in strong magnetism. When the temperature rises above the Curie temperature, the metallic material becomes paramagnetic. At this point, the magnetic domains disintegrate, the arrangement of magnetic moments becomes disordered, the average magnetic moment becomes zero, and the material's magnetism disappears. Its magnetic field easily changes with changes in the surrounding magnetic field. The first and second Curie temperatures of the metal inductor are determined by the material of the inductor itself; therefore, the first and second Curie temperatures can be obtained by understanding the material composition of the metal inductor.

[0055] Next, the heating component of the aerosol generating device is activated to obtain the electrical parameters of the metal induction element. It should be noted that the heating component includes a coil and a metal induction element. When alternating current is applied to the coil, a changing magnetic field is generated. The metal induction element generates heat under the influence of this changing magnetic field. The electrical parameters of the coil correspond to the electrical parameters of the metal induction element; by measuring the electrical parameters of the coil, the electrical parameters of the metal induction element can be determined. Among the collected electrical parameters of the metal induction element, the first and second electrical parameters are identified. The first electrical parameter shows a significant change compared to its adjacent parameters; similarly, the second electrical parameter also shows a significant change compared to its adjacent parameters. When selecting the first and second electrical parameters, all collected electrical parameters can be fitted in chronological order to form a curve. The two points on the curve with inflection points are taken as the first and second electrical parameters.

[0056] The first endpoint is determined by the first Curie temperature and the first electrical parameter, and the second endpoint is determined by the second Curie temperature and the second electrical parameter. A linear relationship curve is established based on the first endpoint and the second endpoint. The correspondence between the electrical parameter and the temperature in the middle segment of the curve is determined based on the linear relationship curve. The real-time temperature of the metal sensor is determined based on the linear relationship curve and the real-time electrical parameter of the metal sensor.

[0057] It should be noted that within the circuit board of the aerosol generation device, the electrical parameters of the magnetic coil can be obtained by monitoring the electrical parameters of the control circuit, and thus the electrical parameters of the metal induction element can be acquired. For different aerosol generation products, the corresponding electrical parameters of the metal induction element can be obtained, thereby allowing the development of a corresponding linear relationship curve between temperature and electrical parameters for that metal induction element, which can improve the accuracy of temperature control.

[0058] In one embodiment of this application, the step of activating the heating component of the aerosol generating device and acquiring the electrical parameters of the metal induction element may specifically include: acquiring the electrical parameters sequentially according to a time sequence.

[0059] In one embodiment of this application, the first electrical parameter and the second electrical parameter are the electrical parameters at the first inflection point and the second inflection point on the curve of electrical parameters changing with time, respectively. The first electrical parameter corresponds to the first Curie temperature, and the second electrical parameter corresponds to the second Curie temperature. Figure 4 As shown, in the curve of current changing with time, the first inflection point and the second inflection point represent the first and second electrical parameters. During the production of the metal inductor, due to limitations in the manufacturing process, the position of the metal inductor relative to the electromagnetic coil varies within the aerosol-generated product. Figure 4The three curves in the figure represent the current change over time when the metal inductor is in position one, position two, and position three relative to the electromagnetic coil. Although the current values ​​are different at different positions and at different times, the trends of the current change curves at the three positions are roughly the same.

[0060] In one embodiment of this application, after determining the real-time temperature of the metal sensor based on the linear relationship curve and the real-time electrical parameters of the metal sensor, the method further includes: controlling the electrical parameters of the aerosol generating device to maintain the real-time temperature within a predetermined range. In one embodiment of this application, as... Figure 5 As shown, when the metal induction element is in position one, position two, and position three relative to the electromagnetic coil, the real-time temperature is maintained within a predetermined range during the heat preservation stage by controlling the electrical parameters of the aerosol generating device (e.g., controlling the connection and disconnection of the control circuit to make the current 0 or a preset value).

[0061] In one embodiment of this application, the predetermined range is 220℃-400℃. In one embodiment of this application, the predetermined range is 250℃-400℃. In one embodiment of this application, the predetermined range is 300℃-400℃. In one embodiment of this application, the predetermined range is 300℃-380℃. In one embodiment of this application, the predetermined range is 320℃-360℃.

[0062] In one embodiment of this application, the metal sensing element comprises a nickel alloy. In another embodiment, nickel possesses good magnetic properties, with a magnetic transition point of 357.85°C. In yet another embodiment, the Ni content of 1J50 and 1J85 is approximately 50% and 80%, respectively. Since increasing the nickel content lowers the first and second Curie temperatures of the magnetic material, the predetermined range of the real-time temperature can be adjusted to be within the temperature range corresponding to the first and second Curie temperatures.

[0063] In one embodiment of this application, the nickel alloy has a nickel content of 45%-100%, which allows the predetermined range of the real-time temperature to be within the first Curie temperature and the second Curie temperature.

[0064] In one embodiment of this application, the aerosol generating apparatus includes an electromagnetic coil defining a heating chamber into which an aerosol generating article can be inserted. The electromagnetic coil can generate a magnetic field under the influence of an electric current and heat a metal induction element in the aerosol generating article.

[0065] In one embodiment of this application, the aerosol-generated article is in the form of a column or a sheet.

[0066] In one embodiment of this application, when the aerosol generating article is columnar, the aerosol generating article includes a tobacco layer, a metal sensing element, and a paper layer arranged sequentially from the inside to the outside.

[0067] In one embodiment of this application, the columnar aerosol generating article may include a mouthpiece, a connecting section, and a tobacco segment capable of generating aerosols. The connecting section is located between the mouthpiece and the tobacco segment and is used to guide the aerosol to the mouthpiece. The mouthpiece can be held in the mouth of a user, who can inhale the aerosol by sucking on the mouthpiece. The tobacco segment includes a tobacco layer, a metal sensor, and a paper layer arranged sequentially from the inside out. The tobacco segment in the aerosol generating article may contain an aerosol generating matrix.

[0068] As used herein, the term "aerosol-generating matrix" refers to a matrix capable of releasing volatile substances to form inhalable aerosols. An aerosol-generating matrix may include tobacco-containing materials containing volatile tobacco flavor compounds that are released from the substrate upon heating. Specifically, an aerosol-generating matrix may be a tobacco-containing aerosol-generating matrix or an aerosol-generating matrix containing solid tobacco. Alternatively, an aerosol-generating matrix may include non-tobacco materials. An aerosol-generating matrix may also include aerosol-forming agents. Examples of suitable aerosol-forming agents are glycerol and propylene glycol.

[0069] As needed, the aerosol generating matrix may contain additional tobacco or non-tobacco volatile aroma compounds released when the aerosol generating matrix is ​​heated. The aerosol generating matrix may also contain microcapsules, which may contain additional tobacco or non-tobacco volatile aroma compounds, and such microcapsules may melt during heating of the solid aerosol generating matrix.

[0070] The aerosol-generating article can be generally a rod-shaped structure extending longitudinally. The mouthpiece can be positioned adjacent to the proximal end of the aerosol-generating article. The tobacco segment can be positioned adjacent to the distal end of the aerosol-generating article.

[0071] In one embodiment of this application, when the aerosol generating article is in sheet form, the aerosol generating article includes a sheet-like tobacco layer and a metal sensing element disposed on the tobacco layer.

[0072] In one embodiment of this application, the sheet-like tobacco layer may include tobacco extract. The tobacco extract can be obtained by extracting extracts from tobacco leaves and flowers using a solvent, then extracting the extract with ethanol, followed by drying, dehydration, desalting, and cooking of the raw materials, adding an extract with a special aroma, and performing ultrasonic-assisted extraction to finally obtain a tobacco extract with a specific flavor. In one embodiment of this application, the tobacco extract is mainly used for tobacco flavoring, which can enhance the aroma, reduce off-flavors, and improve cigarette quality. Its aroma is realistic and natural, making it an excellent raw material for cigarette flavoring. Furthermore, tobacco extract can also be used in daily-use fragrances to provide unique aromas and flavors.

[0073] In one embodiment of this application, the main components of the tobacco extract include furfuryl alcohol, benzyl alcohol, phytol, solanone, β-turfayne, β-ionone, hexahydrofarnesone, diene, daidzeinone, dihydroactinolone, isopentenone, indole, etc.

[0074] In one embodiment of this application, the outer diameter of the aerosol-generating article is 5mm-8mm. In one embodiment of this application, the outer diameter of the aerosol-generating article is 6mm-7mm. In one embodiment of this application, the outer diameter of the aerosol-generating article is 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, or 8mm.

[0075] It should be noted that the preferred embodiments of this application are given in the specification and accompanying drawings, but are not limited to the embodiments described in this specification. Furthermore, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A temperature control method for an aerosol generating apparatus, used to heat an aerosol generating product including a metal induction element, characterized in that, The heating stage of the aerosol-generated product includes: a monitoring stage, a preheating stage, and a heat preservation stage arranged sequentially in time sequence. The control method includes: during the monitoring phase, acquiring a linear relationship curve between temperature and electrical parameters; during the preheating phase and the heat preservation phase, determining the real-time temperature of the metal sensing element based on its real-time electrical parameters.

2. The temperature control method for the aerosol generating device according to claim 1, characterized in that, The step of obtaining the linear relationship curve between temperature and electrical parameters during the monitoring phase specifically includes: The first and second Curie temperatures of the metal induction element are obtained. The heating component of the aerosol generating device is activated to obtain the electrical parameters of the metal induction element; Among the electrical parameters, a first electrical parameter and a second electrical parameter are found, and a first endpoint is determined by the first Curie temperature and the first electrical parameter, and a second endpoint is determined by the second Curie temperature and the second electrical parameter. A linear relationship curve is established based on the first endpoint and the second endpoint. Based on the linear relationship curve, determine the correspondence between electrical parameters and temperature in the middle section of the curve; The real-time temperature of the metal sensor is determined based on the linear relationship curve and the real-time electrical parameters of the metal sensor.

3. The temperature control method for the aerosol generating device according to claim 2, characterized in that, After determining the real-time temperature of the metal sensor based on the linear relationship curve and the real-time electrical parameters of the metal sensor, the control method further includes controlling the electrical parameters of the aerosol generating device so that the real-time temperature is maintained within a predetermined range.

4. The temperature control method for the aerosol generating device according to claim 3, characterized in that, The predetermined range is 220℃-400℃.

5. The temperature control method for the aerosol generating device according to claim 1, characterized in that, The electrical parameters include resistance, inductance, or current.

6. The temperature control method for the aerosol generating device according to claim 1, characterized in that, The step of activating the heating assembly of the aerosol generating device and acquiring the electrical parameters of the metal induction element specifically includes: The electrical parameters were obtained sequentially according to a time series.

7. The temperature control method for the aerosol generating device according to claim 1, characterized in that, The metal sensing element comprises a nickel alloy.

8. The temperature control method for the aerosol generating device according to claim 1, characterized in that, The nickel alloy has a nickel content of 45%-100%.

9. The temperature control method for the aerosol generating device according to claim 1, characterized in that, The aerosol generating apparatus includes an electromagnetic coil that defines a heating chamber into which the aerosol-generated article can be inserted.

10. The temperature control method for the aerosol generating device according to claim 1, characterized in that, The aerosol-generated product is in columnar or sheet form.

11. The temperature control method for the aerosol generating apparatus according to claim 10, characterized in that, When the aerosol generating product is columnar, the aerosol generating product includes a tobacco layer, a metal sensing element, and a paper layer arranged sequentially from the inside to the outside; When the aerosol generating product is in sheet form, the aerosol generating product includes a sheet-like tobacco layer and a metal sensing element disposed on the tobacco layer.

Images