Aerosol product and aerosol generation apparatus

Abstract

An aerosol product (10) and an aerosol generation apparatus (100). The aerosol product (10) comprises an aerosol generation member (1) and a blocking member (2) that are adjacently arranged, wherein the aerosol generation member (1) comprises an aerosol generation substrate (11) and a susceptor (12), and the susceptor (12) can generate heat energy in a magnetic field so as to heat the aerosol generation substrate (11); and the blocking member (2) comprises a carrier (21) and magnetic particles (22) dispersed in the carrier (21). The magnetic particles (22) can be effectively magnetized in a magnetic field, thereby becoming an additional magnetic source, and magnetic field coupling can occur between a magnetic field generated by the magnetic particles (22) and a magnetic field generated by an induction coil (20), such that the magnetic field strength of a magnetic field generated by the aerosol generation apparatus (100) is enhanced; and when the susceptor (12) has a machining error, an assembly error, etc., the susceptor (12) can still generate a preset magnetic strength in the magnetic field having the enhanced magnetic field strength, thereby improving the probability of the aerosol product (10) passing an identification operation.

Description

Aerosol products and aerosol generating devices

[0001] This application claims priority to Chinese Patent Application No. 202510232799.5, filed on February 26, 2025, entitled “An Aerosol Product and Aerosol Generating Device Thereof”; and Chinese Patent Application No. 202510479831.X, filed on April 15, 2025, entitled “An Aerosol Generating Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of aerosol generation technology, specifically to an aerosol product and an aerosol generating device. Background Technology

[0003] Electromagnetic induction heating of aerosol products is one of the mainstream heating methods in heated non-combustible aerosol generators. An aerosol generator typically includes a power supply battery and an induction coil. In use, the aerosol product is inserted into a preset position in the generator. The battery supplies power to the induction coil, causing it to generate an alternating magnetic field. The receptors in the aerosol product generate eddy currents within this alternating magnetic field. These eddy currents cause the atoms in the receptors to move at high speeds and randomly, colliding and rubbing against each other to generate heat, thus heating the aerosol to form a matrix.

[0004] In related technologies, commercially available heated non-combustible aerosol generators typically have an identification operation. During the identification operation, the magnetic excitation system of the heated non-combustible aerosol generator identifies the magnetic intensity generated by the sensor in the energized coil. The magnetic excitation system will only pass the identification operation when the magnetic intensity generated by the sensor reaches a preset threshold; if the magnetic intensity generated by the sensor is lower than the preset threshold, the magnetic excitation system will determine that the identification operation fails, and the aerosol product cannot be used after being inserted into the aerosol generator. Technical issues

[0005] However, during the fabrication, assembly, transportation, and consumer use of the sensor, due to processing errors, assembly errors, and other reasons, the magnetic intensity generated by the sensor in the energized coil is lower than the preset magnetic intensity threshold after the aerosol product is inserted into the aerosol generator. The magnetic excitation system will then determine that the recognition operation has failed, and the aerosol product cannot be used after being inserted into the aerosol generator. The probability of the aerosol product passing the recognition operation is low, which affects the user experience. Technical solutions

[0006] This application provides an aerosol article, which includes an aerosol generating element and a blocking element disposed adjacently; the aerosol generating element includes an aerosol generating matrix and a sensor, the sensor being able to generate heat energy in a magnetic field to heat the aerosol generating matrix; the blocking element includes a carrier and magnetic particles dispersed in the carrier.

[0007] This application also provides an aerosol generating device, including an induction coil and the aforementioned aerosol product; the induction coil is capable of generating a magnetic field, and the sensor and magnetic particles are located in the magnetic field.

[0008] This application also provides an aerosol generating device, including an induction coil and a magnetic component. The induction coil can generate a magnetic field when energized. The magnetic component is disposed adjacent to the induction coil and includes a carrier and magnetic particles dispersed in the carrier. The magnetic particles can be located in the magnetic field. Beneficial effects

[0009] The aerosol product provided in this application includes an aerosol generating component and a blocking component disposed adjacently. The aerosol generating component includes an aerosol generating matrix and a sensor, the sensor being able to generate heat energy in a magnetic field to heat the aerosol generating matrix. The blocking component includes a carrier and magnetic particles dispersed in the carrier. The magnetic particles can be magnetized in the coil's magnetic field, thus becoming an additional magnetic source. The magnetic field generated by the magnetic particles can couple with the magnetic field generated by the induction coil, thereby enhancing the overall magnetism of the aerosol product. The magnetic particles enable the sensor to still generate a preset magnetic strength in the enhanced magnetic field even in the event of processing errors or assembly errors, increasing the probability of the aerosol product passing the recognition operation, reducing the requirements for the sensor's processing accuracy, assembly accuracy, and positional accuracy, and improving the user experience.

[0010] The aerosol generating device provided in this application includes an induction coil and a magnetic component. The induction coil generates a magnetic field when energized. The magnetic component is disposed adjacent to the induction coil and includes a carrier and magnetic particles dispersed within the carrier. The magnetic particles are positioned within the magnetic field. The magnetic particles can be magnetized within the coil's magnetic field, thus becoming an additional magnetic source. The magnetic field generated by the magnetic particles couples with the magnetic field generated by the induction coil, thereby enhancing the magnetic field strength of the aerosol generating device. Even with processing or assembly errors, the sensor can still generate a preset magnetic strength within the enhanced magnetic field, increasing the probability of aerosol products passing the recognition operation, reducing the requirements for the sensor's processing, assembly, and positional accuracy, and improving the user experience. Attached Figure Description

[0011] Figure 1 is a schematic diagram of the structure of an aerosol product provided in an embodiment of this application;

[0012] Figure 2 is a schematic diagram of the structure of an aerosol product provided in another embodiment of this application;

[0013] Figure 3 is a schematic diagram of the structure of an aerosol product provided in another embodiment of this application;

[0014] Figure 4 is a magnetic field distribution diagram of an induction coil provided in an embodiment of this application;

[0015] Figure 5 shows the magnetic field strength distribution of the induction coil in Figure 4;

[0016] Figure 6 is a magnetization intensity curve of magnetic particles provided in an embodiment of this application as a function of temperature.

[0017] Figure 7 is a 35x magnified SEM image of a cross-sectional slice of the blocking component in Embodiment 1 of this application;

[0018] Figure 8 is a 1000x magnified SEM image of a cross-sectional slice of the blocking component in Embodiment 1 of this application;

[0019] Figure 9 is a schematic diagram of an aerosol generating device provided in an embodiment of this application;

[0020] Figure 10 is a schematic diagram of an aerosol generating device provided in another embodiment of this application;

[0021] Figure 11 is a schematic diagram of an aerosol generating device provided in another embodiment of this application;

[0022] Figure 12 is a schematic diagram of an aerosol generating device provided in another embodiment of this application;

[0023] Figure 13 is a schematic diagram of an aerosol generating device provided in another embodiment of this application;

[0024] Figure 14 is a schematic diagram of the structure of an aerosol product provided in an embodiment of this application;

[0025] Figure 15 is a schematic diagram of the structure of an aerosol product provided in another embodiment of this application;

[0026] Figure 16 is a schematic diagram of the structure of an aerosol product provided in another embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 100, aerosol generating device; 10, aerosol product; 1, aerosol generating component; 11, aerosol generating matrix; 12, sensor; 2, blocking component; 21, carrier; 22, magnetic particles; 3, tube body; 4, filter nozzle; 5, cooling component; 20, induction coil; 30, magnetic component; 31, first magnetic component; 32, second magnetic component; 40, base; 41, heating chamber; 411, chamber wall; 4111, side wall; 4112, bottom wall; 4113, opening. Embodiments of the present invention

[0028] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, where the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, where the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for distinction in description and have no special meaning.

[0031] In related technologies, the following common processing and assembly errors are prone to occur during the fabrication, assembly, transportation, and consumer use of sensors: Material segregation during the smelting of magnetic metals leads to uneven sensor material, ultimately resulting in weaker magnetism in a magnetic field for sensors cut from certain areas; or, incomplete stress release during the annealing of magnetic metals results in weaker magnetism in a magnetic field; or, during the rolling or cutting of sensors, the thickness or length of the formed sensor is smaller than expected, leading to weaker magnetism in a magnetic field; or, when embedded in an aerosol matrix, the sensor is not located in the predetermined position within the aerosol matrix, causing the aerosol matrix to... When the aerosol product is placed in the induction coil, the sensor is not located in a region of strong magnetic field distribution of the solenoid, ultimately weakening the coupling strength between the sensor and the magnetic excitation system, resulting in a weaker magnetism of the sensor in the magnetic field. Alternatively, if the aerosol product is not inserted into the intended position in the induction coil when used with the magnetic coil, this will also weaken the coupling strength between the sensor and the magnetic excitation system. Furthermore, traditional sensors typically consist of an iron metal layer for heating, a magnetic material layer with a Curie temperature of approximately 500°C, and a protective layer. Simplifying the manufacturing process and reducing the sensor thickness by making a multi-layered sensor into a single-layer structure may also reduce the sensor's recognition pass rate. Due to the aforementioned processing and assembly errors, the magnetic strength generated by the sensor in the energized coil after the aerosol product is inserted into the aerosol generator is lower than the preset value. The magnetic excitation system will then determine that the recognition operation has failed, and the aerosol product cannot be used. The low probability of the aerosol product passing the recognition operation negatively impacts the user experience and requires further improvement.

[0032] To this end, in a first aspect, this application provides an aerosol article 10. Referring to Figures 1 to 3, the aerosol article 10 includes an aerosol generating element 1 and a blocking element 2 disposed adjacently. The aerosol generating element 1 includes an aerosol generating matrix 11 and a sensor 12, the sensor 12 being capable of generating heat energy in a magnetic field to heat the aerosol generating matrix 11. The blocking element 2 includes a carrier 21 and magnetic particles 22 dispersed in the carrier 21. In this embodiment, the induction coil generates a magnetic field after being energized. Typically, the magnetic field is strongest in the central region where the central axis of the induction coil is located. In the direction of the central axis and the radial direction of the induction coil, the magnetic field strength generated by the induction coil gradually decreases with the increase of the distance from the central region. For example, referring to Figure 4, which is a simulation diagram of the magnetic field distribution of the induction coil, the magnetic field generated by the induction coil in the smoking device model is simulated and analyzed using COMSOL Multiphysics software. The model uses a solenoid coil, without a magnetic flux concentrator around the coil. The inner diameter of the coil is 9mm and the effective height is 14mm. Here, the effective height is the vertical distance between the upper and lower ends of the coil turns along the coil axis, that is, the section corresponding to segment BC in Figure 4. The overall magnetic field distribution in a plane containing the central axis of the coil is shown in Figure 4. Furthermore, based on Figure 4, with the plane corresponding to point A in Figure 4 as the zero point, a magnetic field intensity distribution along the central axis was plotted upwards within a 24mm arc length segment (AD segment). Figure 5 shows the magnetic field intensity distribution along the central axis. As can be seen from Figure 5, the magnetic field intensity along the central axis in the effective height segment BC exhibits a smooth, single peak characteristic, reaching its maximum value at a distance of 12mm from the plane where A is located (i.e., the center corresponding to segment BC). The highest magnetic field intensity is close to 0.0068 Tesla. The center corresponding to segment BC is the central region of the induction coil, where the overall magnetic field intensity is highest. As the distance from the central region increases, the magnetic field intensity generated by the induction coil gradually decreases. In addition to the large magnetic field inside the induction coil, the AB and CD segments outside the induction coil still have a certain magnetic field intensity distribution. The magnetic fields in these areas can be used to enhance the detection and identification of aerosol products 10. Generally, the aerosol generator 1 is located in the central region of the induction coil. Therefore, the blocking member 2 is located adjacent to the aerosol generator 1, and can be positioned close to the central region of the induction coil, allowing the blocking member 2 to fall into a space with a strong magnetic field. The magnetic particles 22 can be effectively magnetized in the magnetic field, thus becoming an additional magnetic source. The magnetic field generated by the magnetic particles 22 can couple with the magnetic field generated by the induction coil, thereby enhancing the overall magnetism of the aerosol product 10. The magnetic particles 22 ensure that even with processing errors or assembly errors, the sensor 12 can still generate a preset magnetic intensity in the enhanced magnetic field, increasing the probability of the aerosol product 10 passing the recognition operation, reducing the requirements for the processing accuracy, assembly accuracy, and positional accuracy of the sensor 12, and improving the user experience.

[0033] In this embodiment, while increasing the probability of the aerosol product 10 passing the recognition operation, the magnetic particles 22 can effectively shorten the time for the sensor 12 to reach the expected stable operating temperature, thereby increasing the heating speed of the sensor 12. This allows the aerosol product 10 to reach the preset heating temperature more quickly, effectively improving the user experience. The magnetic particles 22 are very fine particles, resulting in a short magnetic field loop through which the magnetic lines of force pass. The eddy current effect in the magnetic particles 22 is very weak, and the temperature rise is not significant. This allows the magnetic particles 22 to significantly improve the overall magnetism of the aerosol product 10, but without causing a significant eddy current heating effect. This allows the aerosol product 10 to have a strong power input, with most of this power input being converted to the sensor 12, further improving the heating speed of the sensor 12.

[0034] In this embodiment, the magnetic particles 22 not only increase the probability of the aerosol product 10 passing the recognition operation and increase the heating speed of the sensor 12, but also enable the sensor 12 to achieve more stable temperature control. Firstly, the magnetic particles 22 and the sensor 12 compete in the magnetic field. The magnetic particles 22 can disperse the system's input power, making the power ratio adjustment process on the sensor 12 smoother, reducing temperature overshoot of the sensor 12, and preventing the sensor 12 from generating harmful substances and experiencing localized over-carbonization during the heating of the aerosol generation matrix 11 due to excessive temperature. Secondly, compared to larger blocky magnetic components, the magnetic particles 22 are smaller in size and volume, have higher permeability and resistivity, shorter loops of magnetic lines of force passing through them, weaker eddy current heating effect, and limited heat generation, reducing magnetic energy loss. The magnetic particles 22 can construct more internal magnetic circuits while reducing system energy loss, improving the stability of the feedback signal of inductance change, thus facilitating stable temperature control of the magnetic excitation system. Thirdly, the magnetic particles 22 can absorb a portion of the magnetic field, acting as a shield similar to wave absorption, reducing interference from the magnetic field on nearby circuit board modules and other components. Simultaneously, the magnetic particles 22 themselves generate limited heat, reducing the thermal impact of the blocking component 2 on nearby components. This makes the magnetic field coupling, heating, and operation of nearby components of the entire system more stable, further facilitating more stable temperature control of the sensor 12. Fourthly, the magnetic particles 22 significantly increase the overall magnetism of the aerosol product 10 with temperature changes, reducing the magnitude of the permeability change in the sensor 12 (the ratio between the absolute value of the permeability change of the sensor 12 with temperature and the overall magnetism of the aerosol product 10). The permeability change in the sensor 12 is more gradual, thus maintaining stable coupling between the aerosol product 10 and the magnetic excitation system. Fifthly, the magnetic strength of the magnetic particles 22 changes very little with temperature. The magnetization intensity of the magnetic particles as a function of temperature (MT curve) is shown in Figure 6. The MT curve was plotted using a Quantum Design SQUID-VSM tester at a frequency of 40 Hz and a scan speed of 15 K / min. When the temperature changed from 20℃ to 150℃, the magnetic strength of the magnetic particle 22 changed by approximately 1.4%, while the temperature rise of the magnetic particle 22 itself was not significant. Therefore, when the magnetic particle 22 is magnetically coupled with the induction coil, the magnetic strength of the magnetic particle 22 remains essentially unchanged. The magnetic coupling between the magnetic particle 22 and the induction coil is relatively stable, resulting in a more balanced magnetic change in the entire aerosol product 10 with the temperature change of the sensor 12. This facilitates more stable temperature control of the sensor 12.

[0035] In this embodiment, the shapes of the aerosol generator 1 and the blocking member 2 are not limited; they can be cylinders, cuboids, frustums, or other shapes. The number of blocking members 2 is also not limited; there can be one, two, or more. The position of the blocking members 2 is also not limited; they can be distributed along the axial direction of the aerosol generator 1 at any end of the aerosol generator 1, or at both ends of the aerosol generator 1. The blocking members 2 can be in direct contact with the aerosol generator 1, or they can be spaced apart from it.

[0036] In one embodiment, the mass ratio of magnetic particle 22 to receptor 12 is (1.2-4.2):1. Optionally, the mass ratio of magnetic particle 22 to receptor 12 can be any one or any two of the following: 1.2:1, 1.5:1, 1.8:1, 2.0:1, 2.5:1, 2.8:1, 3.0:1, 3.5:1, 4.0:1, 4.2:1, etc., and is not limited herein. In this embodiment, if the mass ratio of magnetic particles 22 to sensor 12 is too large, firstly, it easily increases the material cost of magnetic particles 22; secondly, it easily leads to the overall magnetism of magnetic particles 22 being higher than that of sensor 12, thereby greatly weakening the coupling between sensor 12 and the magnetic excitation system, affecting the dominant position of the coupling between sensor 12 and the magnetic excitation coil, which is not conducive to sensor 12 generating the preset magnetic strength and eddy current effect in the magnetic field, reducing the probability of aerosol product 10 passing the recognition operation; in addition, if the mass ratio of magnetic particles 22 to sensor 12 is too large, it easily leads to uneven mixing and dispersion of magnetic particles 22 in the raw materials during the preparation of the blocking component 2, resulting in excessively high hardness of the prepared blocking component 2, which is not conducive to the demolding, cutting and assembly of the blocking component 2. If the mass ratio of magnetic particles 22 to sensor 12 is too small, it easily leads to the magnetic particles 22 not being effective in increasing the overall magnetism of aerosol product 10, reducing the magnetic flux concentration effect and wave absorption effect of magnetic particles 22 on the magnetic field.

[0037] In one embodiment, the mass of the magnetic particle 22 is 39.2 mg to 137.2 mg. Optionally, the mass of the magnetic particle 22 can be any one or any two of 39.2 mg, 40.0 mg, 60.0 mg, 80.0 mg, 100.0 mg, 110.0 mg, 120.0 mg, 130.0 mg, 137.2 mg, etc., and is not limited herein. In this embodiment, if the mass of the magnetic particles 22 is too large, firstly, it easily increases the material cost of the magnetic particles 22; secondly, it easily leads to the overall magnetism of the magnetic particles 22 being higher than that of the sensor 12, thereby greatly weakening the coupling between the sensor 12 and the magnetic excitation system, affecting the dominant position of the coupling between the sensor 12 and the magnetic excitation coil, and making it difficult for the sensor 12 to generate the preset magnetic strength and eddy current effect in the magnetic field; in addition, if the mass of the magnetic particles 22 is too large, it easily leads to uneven mixing and dispersion of the magnetic particles 22 in the raw materials during the preparation of the blocking component 2, resulting in excessively high hardness of the prepared blocking component 2, which is not conducive to the demolding, cutting and assembly of the blocking component 2. If the mass of the magnetic particles 22 is too small, it easily leads to the magnetic particles 22 not being ideal in increasing the overall magnetism of the aerosol product 10, reducing the magnetic flux concentration effect and wave absorption effect of the magnetic particles 22 on the magnetic field.

[0038] In one embodiment, the material type of the magnetic particles 22 is not limited, and the magnetic particles 22 may include at least one of elemental iron, ferrite, iron alloy, modified graphite, modified graphene, elemental cobalt, cobalt oxide, cobalt alloy, elemental nickel, nickel oxide, and nickel alloy. Optionally, the magnetic particles 22 may include at least one of ferrite, permalloy, and tenets alloy.

[0039] In one embodiment, the Curie temperature of the magnetic particle 22 is 300°C-1000°C. Optionally, the Curie temperature of the magnetic particle 22 can be any one or any two of 300°C, 400°C, 500°C, 600°C, 700°C, 800°C, 900°C, 1000°C, etc., and is not limited herein.

[0040] In one embodiment, the length of the blocking member 2 in the axial direction of the aerosol product 10 is 3mm-10mm. Optionally, the length of the blocking member 2 in the axial direction of the aerosol product 10 can be any one or any two of 3mm, 5mm, 7mm, 9mm, 10mm, etc., and is not limited here. In this embodiment, if the length of the blocking member 2 in the axial direction of the aerosol product 10 is too small, it is not conducive to the blocking member 2 loading enough magnetic particles 22; if the length of the blocking member 2 in the axial direction of the aerosol product 10 is too large, it is easy to cause a large offset in the relative position of the sensor 12 in the axial direction of the aerosol product 10, so that after the aerosol product 10 is inserted into the aerosol generating device, the sensor 12 cannot be located in the central region of the induction coil, weakening the magnetic field coupling effect between the sensor 12 and the magnetic field of the induction coil.

[0041] In one embodiment, the length of the blocking member 2 in the axial direction of the aerosol article 10 is L1, and the axial length of the aerosol article 10 is L2, where 1:3 ≤ L1 / L2 ≤ 1:10. Optionally, the value of L1 / L2 can be any one or any two of 1:3, 1:5, 1:7, 1:9, 1:10, etc., and is not limited here.

[0042] In one embodiment, the length of the blocking member 2 in the axial direction of the aerosol article 10 is L1, and the length of the aerosol generating matrix 11 in the axial direction of the aerosol article 10 is L3, where 1:1 ≤ L1 / L3 ≤ 1:5. Optionally, the value of L1 / L3 can be any one or any two of 1:1, 1:2, 1:3, 1:4, 1:5, etc., and is not limited here.

[0043] In one embodiment, the material type of the sensor 12 is not limited, and the material of the sensor 12 may include at least one of the following: Tenets alloy, silicon steel, permalloy, iron-aluminum alloy, Sendast alloy, iron-cobalt alloy, amorphous soft magnetic material, nanocrystalline soft magnetic material, ferrite, and soft magnetic composite material.

[0044] In one embodiment, the Curie temperature of the receptor 12 is 300°C-500°C. Optionally, the Curie temperature of the receptor 12 can be any one or any two of 300°C, 350°C, 400°C, 450°C, 500°C, etc., and is not limited herein.

[0045] In one embodiment, the average particle size of the magnetic particles 22 is 1 nm to 25000 nm. Optionally, the average particle size of the magnetic particles 22 can be any one or any two of the following: 1 nm, 5 nm, 10 nm, 100 nm, 1000 nm, 10000 nm, 15000 nm, 20000 nm, 25000 nm, etc., without limitation. In this embodiment, if the average particle size of the magnetic particles 22 is too small, it is easy to increase the processing cost of the magnetic particles 22. If the average particle size of the magnetic particles 22 is too large, on the one hand, it is easy for the magnetic particles 22 to precipitate and segregate during the mixing process with other raw materials, which is not conducive to the uniform dispersion of the magnetic particles 22 in the carrier 21; on the other hand, the formula (I) for the heating power P of the magnetic conductor in the magnetic field is as follows:

[0046] In formula (I):

[0047] B represents the maximum magnetic flux density, measured in Tesla (T).

[0048] f is the frequency of the alternating magnetic field, and its unit is Hertz (Hz).

[0049] d represents the thickness of the conductor, measured in meters (m).

[0050] V is the volume of the conductor, and the unit is cubic meters (m3);

[0051] ρ is the resistivity of a conductor, measured in ohm-meters (Ω·m).

[0052] Formula (I) shows that, under the premise that other parameters are fixed, the heating power P is proportional to the square of the thickness of the magnetic conductor and proportional to the volume of the magnetic conductor. When the average particle size of the magnetic particles 22 is too large, the heating power P of the magnetic particles 22 is easily too large, and the heating of the magnetic particles 22 will be more significant. This can easily lead to excessively high temperatures of the magnetic particles 22 and the blocking component 2, increasing the loss of magnetic energy. The blocking component 2 can easily cause a large thermal impact on adjacent components, and the blocking component 2 can easily generate harmful substances or odors. At the same time, when the blocking component 2 is located downstream of the aerosol gas flow, the excessively high temperature of the blocking component 2 will weaken the cooling effect of the blocking component 2 on the aerosol gas, resulting in excessively high temperature of the inlet aerosol gas. Therefore, controlling the average particle size of the magnetic particles 22 within an appropriate range can reduce the material cost of the magnetic particles 22, improve the uniformity of the distribution of the magnetic particles 22 in the carrier 21, and at the same time, prevent the heating temperature of the magnetic particles 22 and the blocking component 2 from being too high, reduce system energy loss and the generation of harmful substances or odors, and facilitate the cooling of the aerosol gas.

[0053] In one embodiment, the magnetic particle 22 has a positive temperature resistivity. The relationship between the resistivity of the magnetic particle 22 and temperature can be expressed by formula (II): ρ(T)=ρ0[1+α(T-T0)].

[0054] In formula (II):

[0055] ρ(T) is the resistivity of magnetic particle 22 at temperature T, in ohm-meter (Ω·m);

[0056] ρ0 is the resistivity of magnetic particle 22 at reference temperature T0, i.e., the resistivity value at the reference temperature, in Ω·m;

[0057] α is the temperature coefficient of resistivity, which represents the relative change in resistivity caused by a unit change in temperature, and is expressed in units of degree Celsius (°C) or Kelvin (K).

[0058] T represents the current temperature, expressed in degrees Celsius (°C) or Kelvin (K).

[0059] T0 is the reference temperature (baseline temperature), usually taken as a standard value such as 0℃ or room temperature (20℃), and the unit is degrees Celsius (℃);

[0060] Combining formulas (I) and (II), when the blocking element 2 or the magnetic particle 22 overheats, the resistivity ρ of the magnetic particle 22, which has a positive temperature resistance coefficient, increases, and the heating power P of the magnetic particle 22 decreases, thereby achieving self-limiting temperature protection of the magnetic particle 22 to prevent the magnetic particle 22 from overheating.

[0061] In one embodiment, the magnetic particles 22 are uniformly distributed in the blocking member 2, so that the magnetic field and the heating temperature generated at various points in the blocking member 2 are relatively uniform.

[0062] In one embodiment, when the magnetic particles 22 are not uniformly distributed in the blocking member 2, the concentration of magnetic particles 22 on the side of the blocking member 2 closer to the aerosol generating member 1 is greater than the concentration of magnetic particles 22 on the side of the blocking member 2 farther from the aerosol generating member 1. This ensures that most of the magnetic particles 22 in the blocking member 2 can be distributed in the space with a stronger magnetic field near the center region of the induction coil, improving the magnetic field coupling effect between the magnetic particles 22 and the induction coil, and effectively enhancing the overall magnetism of the aerosol product 10.

[0063] In one embodiment, the material of the carrier 21 includes a heat-insulating material. Using a heat-insulating material for the carrier 21 can reduce the heat transfer from the sensor 12 and the magnetic particles 22 to the carrier 21, thereby preventing the carrier 21 from becoming too hot and reducing the heat loss of the sensor 12.

[0064] In one embodiment, the specific heat capacity of the carrier 21 is 1.0 J / (kg·℃) to 2.5 J / (kg·℃). Optionally, the specific heat capacity of the carrier 21 can be any one or any two of 1.0 J / (kg·℃), 1.5 J / (kg·℃), 2.0 J / (kg·℃), 2.5 J / (kg·℃), etc., and is not limited herein.

[0065] In one embodiment, the density of the carrier 21 is 0.5 g / cm³. 3 -2.5g / cm 3 Optionally, the density of carrier 21 can be 0.5 g / cm³. 3 1.0g / cm 3 1.5g / cm 3 2.0g / cm 3 2.5g / cm 3 The range between any one or any two of the above is not limited here. Controlling the density of carrier 21 within the above range can reduce the weight of carrier 21, which is beneficial to reducing the total weight of aerosol product 10.

[0066] In one embodiment, the material of the carrier 21 includes at least one selected from silicone, fluoropolymer, cellulose acetate, polypropylene resin, and wood. These carrier materials have characteristics such as low density, low specific heat capacity, softness, and loose structure, which can reduce the weight of the aerosol product 10, reduce heat absorption, and ensure a certain absorption resistance. Simultaneously, it facilitates the one-time molding of multiple tiny vent holes on the carrier 21, or utilizes the carrier material's inherent high porosity to eliminate the need for pore-opening operations. Furthermore, the carrier 21 itself serves to prevent the leakage of particulate matter from the aerosol generator 1; therefore, it eliminates the need for sealing paper to bond the ends of the aerosol generator 1, saving the sealing paper bonding process.

[0067] In one embodiment, the blocking element 2 does not contact the sensor 12, which reduces the transfer of heat from the sensor 12 to the blocking element 2, reduces the absorption of heat from the sensor 12 by the magnetic particles 22 and the carrier 21, reduces heat loss, and prevents the blocking element 2 from overheating. Simultaneously, it facilitates the separate processing and assembly of the blocking element 2 and the aerosol generating element 1. The blocking element 2 and the aerosol generating element 1 can be mass-produced on a large scale with high efficiency, ensuring consistent quality. Furthermore, no additional welding or bonding processes are required to connect the blocking element 2 and the aerosol generating element 1, saving processing steps and production costs.

[0068] In one embodiment, the distance between the blocking member 2 and the sensor 12 is greater than 0 and less than or equal to 10 mm. Optionally, the distance between the blocking member 2 and the sensor 12 can be any one or any two of 0.001 mm, 0.1 mm, 1.0 mm, 2.0 mm, 4.0 mm, 6.0 mm, 8.0 mm, 10.0 mm, etc., and is not limited here. Setting the distance between the blocking member 2 and the sensor 12 within the above range can reduce the absorption of heat from the magnetic particles 22 and the carrier 21 on the sensor 12. At the same time, it ensures that the blocking member 2 can be distributed in a space with a strong magnetic field near the center region of the induction coil, thereby improving the magnetic field coupling effect between the magnetic particles 22 and the induction coil and effectively enhancing the overall magnetism of the aerosol product 10.

[0069] In one embodiment, referring to FIG. 1, the aerosol product 10 further includes a tube body 3, a filter 4, and a cooling element 5. The filter 4, cooling element 5, aerosol generating element 1, and blocking element 2 are located in the tube body 3. The filter 4, cooling element 5, and aerosol generating element 1 are arranged sequentially along the axial direction of the tube body 3, and the blocking element 2 is located on the side of the aerosol generating element 1 closer to the cooling element 5. In this embodiment, the material of the tube body 3 is not limited, and the material of the tube body 3 may include at least one of soft paper tube, hard paper tube, aluminum foil paper tube, high-temperature resistant plastic tube, and silicone tube. The material of the filter 4 is not limited, and the material of the filter 4 may include at least one of sponge and cellulose acetate. The material of the cooling element 5 is not limited, and the material of the cooling element 5 may include at least one of silicone, cellulose acetate, various resins such as porous polypropylene, various papers, cotton, and plant-based materials. The material of the aerosol generating matrix 11 in the aerosol generating component 1 is not limited. The material of the aerosol generating matrix 11 may include at least one of tobacco paste, particulate smoke-generating material, filamentous smoke-generating material, and blocky smoke-generating material.

[0070] In one embodiment, referring to FIG2, the aerosol product 10 further includes a tube body 3, a filter 4, and a cooling element 5. The filter 4, the cooling element 5, the aerosol generating element 1, and the blocking element 2 are located in the tube body 3. The filter 4, the cooling element 5, and the aerosol generating element 1 are arranged sequentially along the axial direction of the tube body 3. The blocking element 2 is located on the side of the aerosol generating element 1 away from the cooling element 5.

[0071] In one embodiment, referring to FIG3, the aerosol product 10 further includes a tube body 3, a filter 4, and a cooling element 5. The filter 4, the cooling element 5, the aerosol generating element 1, and the blocking element 2 are located in the tube body 3. The filter 4, the cooling element 5, and the aerosol generating element 1 are arranged sequentially along the axial direction of the tube body 3. There are two blocking elements 2, which are distributed on both sides of the aerosol generating element 1 along the axial direction of the tube body 3.

[0072] In one embodiment, the blocking member 2 is provided with a vent or groove (not shown in the figure). The vent or groove is used to communicate with the outside atmosphere, so that the aerosol article 10 has suitable smoke resistance.

[0073] This application also provides a method for preparing a blocking element, specifically including the following steps:

[0074] S1. Provide carrier materials and magnetic particles;

[0075] S2. Add the magnetic particles to the carrier material and stir until homogeneous to obtain a mixture;

[0076] S3. The mixture is extruded through a mold at a temperature of 50℃-500℃ to form a blocking part.

[0077] In this embodiment, commercially available magnetic particles and carrier materials can be used. In step S1, the mass ratio between the magnetic particles and the carrier material can be (2:8)-(7:3). In step S2, the stirring temperature can be 20℃-30℃, and stirring can be performed using a mixer.

[0078] Secondly, this application also provides an aerosol generating device, including an induction coil and an aerosol article as described above; the induction coil is capable of generating a magnetic field, and the sensor and magnetic particles are located in the magnetic field.

[0079] Thirdly, this application provides an aerosol generating device 100, referring to Figures 9 and 10, including an induction coil 20 and a magnetic component 30. The induction coil 20 generates a magnetic field when energized. The magnetic component 30 is disposed adjacent to the induction coil 20 and includes a carrier 21 and magnetic particles 22 dispersed in the carrier 21. The magnetic particles 22 are located within the magnetic field. The magnetic particles 22 can be magnetized in the magnetic field, thus becoming an additional magnetic source. The magnetic field generated by the magnetic particles 22 can couple with the magnetic field generated by the induction coil 20, thereby enhancing the magnetic field strength generated by the aerosol generating device 100. Even in the event of processing errors or assembly errors, the sensor 12 can still generate a preset magnetic strength in the enhanced magnetic field, increasing the probability of the aerosol product 10 passing the recognition operation, reducing the requirements for the processing accuracy, assembly accuracy, and positional accuracy of the sensor 12, and improving the user experience.

[0080] In this embodiment, while increasing the probability of the aerosol product 10 passing the recognition operation, the magnetic particles 22 can effectively shorten the time for the sensor 12 to reach the expected stable operating temperature, thereby increasing the heating speed of the sensor 12. This allows the aerosol product 10 to reach the preset heating temperature more quickly, effectively improving the user experience. The magnetic particles 22 are very fine particles, resulting in a short magnetic field loop through which the magnetic lines of force pass. The eddy current effect in the magnetic particles 22 is very weak, and the temperature rise is not significant. This allows the magnetic particles 22 to significantly improve the overall magnetism of the aerosol product 10, but without causing a significant eddy current heating effect. This allows the aerosol product 10 to have a strong power input, with most of this power input being converted to the sensor 12, further improving the heating speed of the sensor 12.

[0081] In this embodiment, the magnetic particles 22 not only increase the probability of the aerosol product 10 passing the recognition operation and increase the heating speed of the sensor 12, but also enable the sensor 12 to achieve more stable temperature control. Firstly, the magnetic particles 22 and the sensor 12 compete in the magnetic field. The magnetic particles 22 can disperse the system's input power, making the power ratio adjustment process on the sensor 12 smoother, reducing temperature overshoot of the sensor 12, and preventing the sensor 12 from generating harmful substances and experiencing localized over-carbonization during the heating of the aerosol generation matrix 11 due to excessive temperature. Secondly, compared to the larger blocky magnetic component 30, the magnetic particles 22 are smaller in size and volume, have higher permeability and resistivity, shorter loops of magnetic lines of force passing through the magnetic particles 22, weaker eddy current heating effect, and limited heat generation, reducing magnetic energy loss. The magnetic particles 22 can construct more internal magnetic circuits while reducing system energy loss, improving the stability of the feedback signal of inductance change, thus facilitating stable temperature control of the magnetic excitation system. Thirdly, the magnetic particles 22 can absorb a portion of the magnetic field, acting as a shield similar to wave absorption, reducing interference from the magnetic field on nearby circuit board modules and other components. Simultaneously, the magnetic particles 22 themselves generate limited heat, reducing the thermal impact of the magnetic component 30 on nearby components. This makes the magnetic field coupling, heating, and operation of nearby components of the entire system more stable, further facilitating more stable temperature control of the sensor 12. Fourthly, the magnetic particles 22 significantly increase the overall magnetism of the aerosol product 10 with temperature changes, reducing the magnitude of the permeability change in the sensor 12 (the ratio between the absolute value of the permeability change of the sensor 12 with temperature and the overall magnetism of the aerosol product 10). The permeability change in the sensor 12 is more gradual, thus maintaining stable coupling between the aerosol product 10 and the magnetic excitation system. Fifthly, the magnetic strength of the magnetic particles 22 changes very little with temperature. The magnetization intensity of the magnetic particles 22 as a function of temperature (MT curve) is shown in Figure 6. The MT curve was plotted using a Quantum Design SQUID-VSM tester at a frequency of 40 Hz and a scanning speed of 15 K / min. When the temperature changed from 20℃ to 150℃, the magnetic strength of the magnetic particle 22 changed by approximately 1.4%, while the temperature rise of the magnetic particle 22 itself was not significant. Therefore, when the magnetic particle 22 is magnetically coupled with the induction coil 20, the magnetic strength of the magnetic particle 22 remains essentially unchanged, and the magnetic coupling between the magnetic particle 22 and the induction coil 20 is relatively stable. This results in a more balanced magnetic change in the entire aerosol product 10 as the temperature of the sensor 12 changes, which is beneficial for achieving more stable temperature control of the sensor 12.

[0082] In this embodiment, the shape of the magnetic element 30 is not limited; it can be a cylinder, cuboid, frustum, or other shapes. The number of magnetic elements 30 is also not limited; it can be one, two, or more. The position of the magnetic elements 30 is also not limited. For example, as shown in Figure 9, the magnetic element 30 and the induction coil 20 are arranged sequentially along the axial direction of the induction coil 20; or, as shown in Figure 10, the magnetic element 30 and the induction coil 20 are arranged sequentially along the radial direction of the induction coil 20. The magnetic element 30 can be in direct contact with the induction coil 20 or can be spaced apart from it.

[0083] In one embodiment, the central axis Z of the induction coil 20 can pass through the magnetic component 30. Generally, the magnetic field is strongest in the central region where the central axis Z of the induction coil 20 is located. In the axial and radial directions of the induction coil 20, the magnetic field strength generated by the induction coil 20 gradually decreases with increasing distance from the central region. For example, referring to Figure 4, which is a simulation diagram of the magnetic field distribution of the induction coil 20, the magnetic field generated by the induction coil 20 in the smoking device model is simulated and analyzed using COMSOL Multiphysics software. The model uses a solenoid coil, without a magnetic flux concentrator around the coil, with an inner diameter of 9 mm and an effective height of 14 mm. Here, the effective height is the vertical distance between the upper and lower ends of the coil turns along the coil axis, i.e., the segment corresponding to segment BC in Figure 4. Furthermore, based on Figure 4, with the plane corresponding to point A in Figure 4 as the zero point, a magnetic field intensity distribution along the central axis was plotted upwards within a 24mm arc length segment (AD segment). Figure 5 shows the magnetic field intensity distribution along the central axis. As can be seen from Figure 5, the magnetic field intensity in the effective height segment BC along the central axis exhibits a smooth, single peak characteristic, reaching its maximum value at a distance of 12mm from the plane where A is located (i.e., the center corresponding to segment BC). The highest magnetic field intensity is close to 0.0068 Tesla. The center corresponding to segment BC is the central region of induction coil 20, where the overall magnetic field intensity is highest. As the distance from the central region increases, the magnetic field intensity generated by induction coil 20 gradually decreases. Meanwhile, in addition to the large magnetic field inside induction coil 20, the AB and CD segments outside induction coil 20 still have a certain magnetic field intensity distribution. The magnetic fields in these areas can be used to enhance the detection and identification of aerosol products. Furthermore, at the same axial height, the closer to the central axis of induction coil 20, the stronger the magnetic field.

[0084] In this embodiment, referring to FIG9, the central axis Z of the induction coil 20 can pass through the magnetic element 30, so that under the same axial height, the magnetic element 30 is located closer to the central axis Z of the induction coil 20, and the magnetic field in the area where the magnetic element 30 is located is stronger, which further enables the magnetic element 30 to fall into the space with a stronger magnetic field strength. The magnetic particles 22 can be effectively magnetized in the magnetic field, and the magnetic field coupling effect between the magnetic field generated by the magnetic particles 22 and the magnetic field generated by the induction coil 20 is better, and the magnetic field strength of the magnetic field generated by the aerosol generating device 100 is stronger.

[0085] In one embodiment, the mass of the magnetic particle 22 is 39.2 mg to 137.2 mg. Optionally, the mass of the magnetic particle 22 can be any one or any two of 39.2 mg, 40.0 mg, 60.0 mg, 80.0 mg, 100.0 mg, 110.0 mg, 120.0 mg, 130.0 mg, 137.2 mg, etc., and is not limited herein. In this embodiment, if the mass of the magnetic particles 22 is too large, firstly, it easily increases the material cost of the magnetic particles 22; secondly, it easily leads to the overall magnetism of the magnetic particles 22 being higher than that of the sensor 12, thereby weakening the coupling between the sensor 12 and the magnetic excitation system, affecting the dominant position of the coupling between the sensor 12 and the magnetic excitation coil, and making it difficult for the sensor 12 to generate the preset magnetic strength and eddy current effect in the magnetic field; in addition, if the mass of the magnetic particles 22 is too large, it easily leads to uneven mixing and dispersion of the magnetic particles 22 in the raw materials during the preparation of the magnetic component 30, resulting in excessively high hardness of the prepared magnetic component 30, which is not conducive to the demolding, cutting and assembly of the magnetic component 30. If the mass of the magnetic particles 22 is too small, it easily leads to the magnetic particles 22 not being ideal in increasing the overall magnetism of the aerosol product 10, reducing the magnetic flux concentration effect and wave absorption effect of the magnetic particles 22 on the magnetic field.

[0086] In one embodiment, the average particle size of the magnetic particles 22 is 1 nm to 25000 nm. Optionally, the average particle size of the magnetic particles 22 can be any one or any two of the following: 1 nm, 5 nm, 10 nm, 100 nm, 1000 nm, 10000 nm, 15000 nm, 20000 nm, 25000 nm, etc., without limitation. In this embodiment, if the average particle size of the magnetic particles 22 is too small, it easily increases the processing cost of the magnetic particles 22. If the average particle size of the magnetic particles 22 is too large, on the one hand, it easily leads to precipitation and segregation of the magnetic particles 22 during mixing with other raw materials, which is not conducive to the uniform dispersion of the magnetic particles 22 in the carrier 21; on the other hand, the formula (I) for the heating power P of the magnetic conductor in the magnetic field is as follows:

[0087] In formula (I):

[0088] B represents the maximum magnetic flux density, measured in Tesla (T).

[0089] f is the frequency of the alternating magnetic field, and its unit is Hertz (Hz).

[0090] d represents the thickness of the conductor, measured in meters (m).

[0091] V is the volume of the conductor, and the unit is cubic meters (m3);

[0092] ρ is the resistivity of a conductor, measured in ohm-meters (Ω·m).

[0093] Formula (I) shows that, under the premise that other parameters are fixed, the heating power P is directly proportional to the square of the thickness of the magnetic conductor and directly proportional to the volume of the magnetic conductor. When the average particle size of the magnetic particles 22 is too large, the heating power P of the magnetic particles 22 is easily too large, and the heating of the magnetic particles 22 will be more significant. This can easily lead to excessively high temperatures of the magnetic particles 22 and the magnetic component 30, increasing the loss of magnetic energy. The magnetic component 30 can easily cause a large thermal impact on adjacent components, and the magnetic component 30 can easily produce harmful substances or odors. Therefore, controlling the average particle size of the magnetic particles 22 within an appropriate range can reduce the material cost of the magnetic particles 22, improve the uniformity of the distribution of the magnetic particles 22 in the carrier 21, and at the same time, prevent the heating temperature of the magnetic particles 22 and the magnetic component 30 from being too high, thereby reducing system energy loss and the generation of harmful substances or odors.

[0094] In one embodiment, the magnetic particle 22 has a positive temperature resistivity. In one embodiment, the magnetic particle 22 has a positive temperature resistivity. The relationship between the resistivity of the magnetic particle 22 and temperature can be expressed by formula (II): ρ(T)=ρ0[1+α(T-T0)].

[0095] In formula (II):

[0096] ρ(T) is the resistivity of magnetic particle 22 at temperature T, in ohm-meter (Ω·m);

[0097] ρ0 is the resistivity of magnetic particle 22 at reference temperature T0, i.e., the resistivity value at the reference temperature, in Ω·m;

[0098] α is the temperature coefficient of resistivity, representing the relative change in resistivity caused by a unit change in temperature, and is expressed in degrees Celsius (°C). -1 ) or per Kelvin (K -1 );

[0099] T represents the current temperature, expressed in degrees Celsius (°C) or Kelvin (K).

[0100] T0 is the reference temperature (baseline temperature), usually taken as a standard value such as 0℃ or room temperature (20℃), and the unit is degrees Celsius (℃);

[0101] Combining formulas (I) and (II), when the magnetic component 30 or the magnetic particle 22 overheats, the resistivity ρ of the magnetic particle 22, which has a positive temperature resistance coefficient, increases, and the heating power P of the magnetic particle 22 decreases, thereby achieving self-limiting temperature protection for the magnetic particle 22 to prevent the magnetic particle 22 from overheating.

[0102] In one embodiment, the Curie temperature of the magnetic particle 22 is 300°C-1000°C. Optionally, the Curie temperature of the magnetic particle 22 can be any one or any two of 300°C, 400°C, 500°C, 600°C, 700°C, 800°C, 900°C, 1000°C, etc., and is not limited herein.

[0103] In one embodiment, the magnetic particles 22 include at least one of elemental iron, ferrite, ferroalloy, modified graphite, modified graphene, elemental cobalt, cobalt oxide, cobalt alloy, elemental nickel, nickel oxide, and nickel alloy. Optionally, the magnetic particles 22 include at least one of ferrite, permalloy, and tenets alloy.

[0104] In one embodiment, the magnetic particles 22 are uniformly distributed in the magnetic component 30, so that the magnetic field generated in the magnetic component 30 is relatively uniform.

[0105] In one embodiment, when the magnetic particles 22 are not uniformly distributed in the magnetic component 30, the concentration of magnetic particles 22 on the side of the magnetic component 30 closer to the induction coil 20 is greater than the concentration of magnetic particles 22 on the side of the magnetic component 30 farther from the induction coil 20. This ensures that most of the magnetic particles 22 in the magnetic component 30 can be distributed in the space with a stronger magnetic field near the central region of the induction coil 20, thereby improving the magnetic field coupling effect between the magnetic particles 22 and the induction coil 20 and effectively enhancing the overall magnetism of the aerosol product 10.

[0106] In one embodiment, the material of the carrier 21 includes a heat-insulating material. Using a heat-insulating material for the carrier 21 can reduce the heat transfer from the sensor 12 and the magnetic particles 22 to the carrier 21, thereby preventing the carrier 21 from becoming too hot and reducing the heat loss of the sensor 12.

[0107] In one embodiment, the specific heat capacity of the carrier 21 is 1.0 J / (kg·℃) to 2.5 J / (kg·℃); optionally, the specific heat capacity of the carrier 21 can be any one or any two of 1.0 J / (kg·℃), 1.5 J / (kg·℃), 2.0 J / (kg·℃), 2.5 J / (kg·℃), etc., and is not limited here.

[0108] In one embodiment, the density of the carrier 21 is 0.5 g / cm³. 3 -2.5g / cm 3 Optionally, the density of carrier 21 can be 0.5 g / cm³. 3 1.0g / cm 3 1.5g / cm 3 2.0g / cm 3 2.5g / cm 3 The range between any one or any two of the above is not limited here. Controlling the density of carrier 21 within the above range can reduce the weight of carrier 21, which is beneficial to reducing the total weight of aerosol product 10.

[0109] In one embodiment, the material of the carrier 21 includes at least one selected from silicone, fluoropolymer, cellulose acetate, polypropylene resin, and wood. The carrier 21 material has characteristics such as low density, low specific heat capacity, softness, and loose structure, which can reduce the weight of the aerosol product 10 and reduce heat absorption.

[0110] In one embodiment, referring to Figures 10 to 13, the aerosol generating device 100 further includes an aerosol article 10 and a base 40. The aerosol article 10 has an aerosol generating element 1, which includes a sensor 12 and an aerosol generating matrix 11. The sensor 12 is capable of generating heat energy in a magnetic field to heat the aerosol generating matrix 11. The base 40 has a heating chamber 41 for accommodating the aerosol article 10. An induction coil 20 surrounds the heating chamber 41 to generate a magnetic field within the heating chamber 41. The induction coil 20 surrounds the heating chamber 41 so that after the aerosol article 10 is inserted into the heating chamber 41, it is located in a space with a higher magnetic field strength of the induction coil 20, thereby increasing the magnetic strength of the sensor 12 in the magnetic field and thus increasing the probability of the aerosol article 10 passing the recognition operation and the heating effect. In this embodiment, a portion of the heating chamber 41 is surrounded by the induction coil 20, or the entire heating chamber 41 is surrounded by the induction coil 20; this is not limited here.

[0111] In one embodiment, the magnetic element 30 may be disposed on the base 40. For example, referring to FIG11, the aerosol generating device 100 includes an aerosol article 10, a base 40, an induction coil 20, and a magnetic element 30; the base 40 has a heating chamber 41 for accommodating the aerosol article 10, the induction coil 20 surrounds the heating chamber 41 to generate a magnetic field within the heating chamber 41, the heating chamber 41 has an opening 4113 for taking out and placing the aerosol article 10, the chamber wall 411 of the heating chamber 41 includes a side wall 4111 and a bottom wall 4112, the bottom wall 4112 is located on the side of the chamber wall 411 away from the opening 4113, and the magnetic element 30 is fixed to the bottom wall 4112.

[0112] In one embodiment, referring to FIG12, the aerosol product 10 includes a magnetic element 30. That is, the magnetic element 30 is located within and is part of the aerosol product 10. The magnetic element 30 includes the magnetic particles 22 and the carrier 21 described in the above embodiment, and is disposed adjacent to the aerosol generating element 1. Generally, the aerosol generating element 1 is disposed in the central region of the induction coil 20; therefore, the magnetic element 30 is disposed adjacent to the aerosol generating element 1, allowing it to be located close to the central region of the induction coil. This enables the magnetic element 30 to fall into a space with a strong magnetic field, allowing the magnetic particles 22 to be effectively magnetized in the magnetic field, thus becoming an additional magnetic source. The magnetic field generated by the magnetic particles 22 can couple with the magnetic field generated by the induction coil 20, thereby enhancing the overall magnetism of the aerosol product 10. The magnetic particles 22 enable the sensor 12 to still generate a preset magnetic intensity in the enhanced magnetic field even in the event of processing errors or assembly errors. This increases the probability of the aerosol product 10 passing the identification operation, reduces the requirements for the processing accuracy, assembly accuracy, and positional accuracy of the sensor 12, and improves the user experience.

[0113] In one embodiment, referring to FIG13, the magnetic element 30 includes a first magnetic element 31 and a second magnetic element 32. The first magnetic element 31 is disposed on the base 40, and the aerosol product 10 includes the second magnetic element 32; that is, the first magnetic element 31 is disposed on the base 40, and the second magnetic element 32 is located in the aerosol product 10 and is part of the aerosol product 10. The first magnetic element 31 includes the carrier 21 and magnetic particles 22 in the above embodiment, and the second magnetic element 32 includes the carrier 21 and magnetic particles 22 in the above embodiment.

[0114] In one embodiment, referring to FIG13, when the magnetic component 30 includes a first magnetic component 31 and a second magnetic component 32, the second magnetic component 32 and the aerosol generating component 1 are disposed adjacent to each other. The magnetic particles 22 in the first magnetic component 31 and the second magnetic component 32 can be magnetized in the coil magnetic field, thereby becoming an additional magnetic source. The magnetic field generated by the magnetic particles 22 in the first magnetic component 31, the magnetic field generated by the induction coil 20, and the magnetic field generated by the magnetic particles 22 in the second magnetic component 32 can be magnetically coupled, thereby enhancing the overall magnetism of the aerosol product 10. The first magnetic component 31 and the second magnetic component 32 can work synergistically to jointly increase the probability of the aerosol product 10 passing the recognition operation.

[0115] In this embodiment, the number of second magnetic elements 32 is not limited; there may be one, two, or more. The position of the second magnetic elements 32 is also not limited; they may be distributed along the axial direction of the aerosol generator 1 at any end of the aerosol generator 1, or at both ends of the aerosol generator 1. The second magnetic elements 32 may be in direct contact with the aerosol generator 1, or they may be spaced apart from it.

[0116] In one embodiment, referring to FIG13, the magnetic component 30 includes a first magnetic component 31 and a second magnetic component 32. The first magnetic component 31 is disposed on the cavity wall 411 of the heating chamber 41, and the second magnetic component 32 is disposed adjacent to the first magnetic component 31. Both the second magnetic component 32 and the first magnetic component 31 are magnetic in a magnetic field. The first magnetic component 31 can generate a magnetic attraction to the second magnetic component 32, making the aerosol product 10 more firmly fixed in the heating chamber 41 after it is inserted into the heating chamber 41. During the user's inhalation of the aerosol, it is less likely that the user's lips will pull the aerosol product 10 out of the heating chamber 41. In this embodiment, the fixing method of the first magnetic component 31 is not limited. The first magnetic component 31 can be fixed to the cavity wall 411 of the heating chamber 41 by snap-fit ​​connection, insertion, adhesion, or other methods.

[0117] In one embodiment, the sum of the masses of the magnetic particles 22 in the first magnetic component 31 and the magnetic particles 22 in the second magnetic component 32 is W1, and the mass of the sensor 12 is W2, where 1.2 ≤ W1 / W2 ≤ 4.2. Optionally, the value of W1 / W2 can be any one or any two of 1.2, 1.5, 1.8, 2.0, 2.5, 2.8, 3.0, 3.5, 4.0, 4.2, etc., and is not limited here. In this embodiment, if the value of W1 / W2 is too large, firstly, it is easy to increase the material cost of the magnetic particles 22; secondly, it is easy to cause the overall magnetism of the magnetic particles 22 to be higher than that of the sensor 12, thereby greatly weakening the coupling between the sensor 12 and the magnetic excitation system, affecting the dominant position of the coupling between the sensor 12 and the magnetic excitation coil, which is not conducive to the sensor 12 generating the preset magnetic strength and eddy current effect in the magnetic field, and reducing the probability of the aerosol product 10 passing the identification operation. If the value of W1 / W2 is too small, the magnetic particles 22 may not be able to effectively increase the overall magnetism of the aerosol product 10, thus reducing the magnetic flux concentration effect and wave absorption effect of the magnetic particles 22 on the magnetic field.

[0118] In one embodiment, the sum of the masses of the magnetic particles 22 in the first magnetic element 31 and the magnetic particles 22 in the second magnetic element 32 is 39.2 mg to 137.2 mg. Optionally, the sum of the masses of the magnetic particles 22 in the first magnetic element 31 and the magnetic particles 22 in the second magnetic element 32 can be any one or any two of the following: 39.2 mg, 40.0 mg, 60.0 mg, 80.0 mg, 100.0 mg, 110.0 mg, 120.0 mg, 130.0 mg, 137.2 mg, etc., and is not limited herein. In this embodiment, if the sum of the masses of the magnetic particles 22 in the first magnetic component 31 and the magnetic particles 22 in the second magnetic component 32 is too large, firstly, it easily increases the material cost of the magnetic particles 22; secondly, it easily leads to the overall magnetism of the magnetic particles 22 being higher than that of the sensor 12, thereby weakening the coupling between the sensor 12 and the magnetic excitation system, affecting the dominant position of the coupling between the sensor 12 and the magnetic excitation coil, and making it unfavorable for the sensor 12 to generate the preset magnetic strength and eddy current effect in the magnetic field. If the sum of the masses of the magnetic particles 22 in the first magnetic component 31 and the magnetic particles 22 in the second magnetic component 32 is too small, it easily leads to the magnetic particles 22 not being ideal in increasing the overall magnetism of the aerosol product 10, reducing the magnetic flux concentration effect and wave absorption effect of the magnetic particles 22 on the magnetic field.

[0119] In one embodiment, the material of the sensor 12 includes at least one of the following: Tenets alloy, silicon steel, permalloy, iron-aluminum alloy, Sendast alloy, iron-cobalt alloy, amorphous soft magnetic material, nanocrystalline soft magnetic material, ferrite, and soft magnetic composite material.

[0120] In one embodiment, the Curie temperature of the magnetic particle 22 is lower than the Curie temperature of the sensor 12.

[0121] In one embodiment, the Curie temperature of the receptor 12 is 300°C-500°C. Optionally, the Curie temperature of the receptor 12 can be any one or any two of 300°C, 350°C, 400°C, 450°C, 500°C, etc., and is not limited herein.

[0122] In one embodiment, the length of the second magnetic element 32 in the axial direction of the aerosol product 10 is 3mm-10mm. Optionally, the length of the second magnetic element 32 in the axial direction of the aerosol product 10 can be any one or any two of 3mm, 5mm, 7mm, 9mm, 10mm, etc., and is not limited here. In this embodiment, if the length of the second magnetic element 32 in the axial direction of the aerosol product 10 is too small, it is not conducive to the second magnetic element 32 loading enough magnetic particles 22; if the length of the second magnetic element 32 in the axial direction of the aerosol product 10 is too large, it is easy to cause a large offset in the relative position of the sensor 12 in the axial direction of the aerosol product 10, so that after the aerosol product 10 is inserted into the heating chamber 41, the sensor 12 cannot be located in the central region of the induction coil 20, weakening the magnetic field coupling effect between the sensor 12 and the magnetic field of the induction coil 20.

[0123] In one embodiment, the length of the second magnetic element 32 in the axial direction of the aerosol product 10 is L1, and the axial length of the aerosol product 10 is L2, where 1:3 ≤ L1 / L2 ≤ 1:10. Optionally, the value of L1 / L2 can be any one or any two of 1:3, 1:5, 1:7, 1:9, 1:10, etc., and is not limited here.

[0124] In one embodiment, the length of the second magnetic element 32 in the axial direction of the aerosol product 10 is L1, and the length of the aerosol generating matrix 11 in the axial direction of the aerosol product 10 is L3, where 1:1 ≤ L1 / L3 ≤ 1:5. Optionally, the value of L1 / L3 can be any one or any two of 1:1, 1:2, 1:3, 1:4, 1:5, etc., and is not limited here.

[0125] In one embodiment, the magnetic particles 22 are uniformly distributed in the second magnetic element 32, so that the magnetic field and heating temperature generated at various points of the second magnetic element 32 are relatively uniform.

[0126] In one embodiment, when the magnetic particles 22 are not uniformly distributed in the second magnetic element 32, the concentration of magnetic particles 22 on the side of the second magnetic element 32 closer to the aerosol generating element 1 is greater than the concentration on the side of the second magnetic element 32 farther from the aerosol generating element 1. This ensures that most of the magnetic particles 22 in the second magnetic element 32 can be distributed in the space with a stronger magnetic field near the center region of the induction coil 20, improving the magnetic field coupling effect between the magnetic particles 22 and the induction coil 20, and effectively enhancing the overall magnetism of the aerosol product 10.

[0127] In one embodiment, the second magnetic component 32 does not contact the receptor 12, which reduces the transfer of heat from the receptor 12 to the second magnetic component 32, reduces the absorption of heat from the receptor 12 by the magnetic particles 22 and the carrier 21, reduces heat loss, and prevents the second magnetic component 32 from overheating. Simultaneously, it facilitates the separate processing and assembly of the second magnetic component 32 and the aerosol generator 1. The second magnetic component 32 and the aerosol generator 1 can be mass-produced on a large scale with high efficiency, ensuring consistent quality. Furthermore, no additional welding or bonding processes are required to connect the second magnetic component 32 and the aerosol generator 1, saving processing steps and production costs.

[0128] In one embodiment, the distance between the second magnetic element 32 and the sensor 12 is greater than 0 and less than or equal to 10 mm. Optionally, the distance between the second magnetic element 32 and the sensor 12 can be any one or any two of 0.001 mm, 0.1 mm, 1.0 mm, 2.0 mm, 4.0 mm, 6.0 mm, 8.0 mm, 10.0 mm, etc., and is not limited here. Setting the distance between the second magnetic element 32 and the sensor 12 within the above range can reduce the absorption of heat from the magnetic particles 22 and the carrier 21 on the sensor 12. At the same time, it ensures that the second magnetic element 32 can be distributed in a space with a strong magnetic field near the center region of the induction coil 20, thereby improving the magnetic field coupling effect between the magnetic particles 22 and the induction coil 20 and effectively enhancing the overall magnetism of the aerosol product 10.

[0129] In one embodiment, the carrier 21 of the second magnetic element 32 is made of a heat-insulating material. Using a heat-insulating material for the carrier 21 reduces heat transfer from the sensor 12 and magnetic particles 22 to the carrier 21, thereby preventing the carrier 21 from overheating and reducing heat loss from the sensor 12.

[0130] In one embodiment, the specific heat capacity of the carrier 21 of the second magnetic element 32 is 1.0 J / (kg·℃) to 2.5 J / (kg·℃). Optionally, the specific heat capacity of the carrier 21 can be any one or any two of 1.0 J / (kg·℃), 1.5 J / (kg·℃), 2.0 J / (kg·℃), 2.5 J / (kg·℃), etc., and is not limited herein.

[0131] In one embodiment, the density of the carrier 21 of the second magnetic element 32 is 0.5 g / cm³. 3 -2.5g / cm 3 Optionally, the density of carrier 21 can be 0.5 g / cm³. 3 1.0g / cm 3 1.5g / cm 3 2.0g / cm 3 2.5g / cm 3 The range between any one or any two of the above is not limited here. Controlling the density of carrier 21 within the above range can reduce the weight of carrier 21, which is beneficial to reducing the total weight of aerosol product 10.

[0132] In one embodiment, the material of the carrier 21 of the second magnetic component 32 includes at least one of silicone, fluoropolymer, cellulose acetate, polypropylene resin, and wood. The carrier 21 material has characteristics such as low density, low specific heat capacity, softness, and loose structure, which can reduce the weight of the aerosol product 10, reduce heat absorption, and ensure a certain suction resistance. It also facilitates the one-time molding of multiple tiny vent holes on the carrier 21, or utilizes the large porosity of the carrier 21 material itself to eliminate the need for pore-opening operations. Furthermore, the carrier 21 itself has the function of preventing the leakage of particulate matter from the aerosol generator 1; therefore, it is not necessary to use sealing paper to bond the ends of the aerosol generator 1, saving the sealing paper bonding process.

[0133] In one embodiment, referring to FIG. 14, the aerosol product 10 further includes a tube body 3, a filter 4, and a cooling element 5. The filter 4, cooling element 5, aerosol generating element 1, and a second magnetic element 32 are located in the tube body 3, and the filter 4, cooling element 5, and aerosol generating element 1 are arranged sequentially along the axial direction of the tube body 3; the second magnetic element 32 is located on the side of the aerosol generating element 1 closer to the cooling element 5. In this embodiment, the material of the tube body 3 is not limited, and the material of the tube body 3 may include at least one of soft paper tube, hard paper tube, aluminum foil paper tube, high-temperature resistant plastic tube, and silicone tube. The material of the filter 4 is not limited, and the material of the filter 4 may include at least one of sponge and cellulose acetate. The material of the cooling element 5 is not limited, and the material of the cooling element 5 may include at least one of silicone, cellulose acetate, various resins such as porous polypropylene, various papers, cotton, and plant-based materials. The material of the aerosol generating matrix 11 in the aerosol generating component 1 is not limited. The material of the aerosol generating matrix 11 may include at least one of tobacco paste, particulate smoke-generating material, filamentous smoke-generating material, and blocky smoke-generating material.

[0134] In one embodiment, referring to FIG15, the aerosol product 10 further includes a tube body 3, a filter 4, and a cooling element 5. The filter 4, the cooling element 5, the aerosol generating element 1, and the second magnetic element 32 are located in the tube body 3. The filter 4, the cooling element 5, and the aerosol generating element 1 are arranged sequentially along the axial direction of the tube body 3. The second magnetic element 32 is located on the side of the aerosol generating element 1 away from the cooling element 5.

[0135] In one embodiment, referring to FIG16, the aerosol product 10 further includes a tube body 3, a filter 4, and a cooling element 5. The filter 4, the cooling element 5, the aerosol generating element 1, and the second magnetic element 32 are located in the tube body 3. The filter 4, the cooling element 5, and the aerosol generating element 1 are arranged sequentially along the axial direction of the tube body 3. There are two second magnetic elements 32, which are distributed on both sides of the aerosol generating element 1 along the axial direction of the tube body 3.

[0136] In one embodiment, the second magnetic element 32 is provided with a vent or groove (not shown). The vent or groove is used to communicate with the outside atmosphere, so that the aerosol article 10 has suitable smoke resistance.

[0137] In one embodiment, the aerosol generating device 100 may include, in addition to the aerosol product 10, induction coil 20, magnetic component 30 and base 40 mentioned above, the structures that conventional aerosol generating devices should have, such as power supply components and circuit boards, which will not be described in detail here.

[0138] In one embodiment, referring to Figures 1-3, the aerosol article 10 further includes a blocking element 2, a filter 4, a cooling element 5, an aerosol generating element 1 and a blocking element 2 located in the tube body 3, with the aerosol generating element 1 and the blocking element 2 arranged adjacent to each other; the aerosol generating element 1 includes an aerosol generating matrix 11 and a sensor 12, the sensor 12 being able to generate heat energy in a magnetic field to heat the aerosol generating matrix 11.

[0139] In some embodiments, the blocking member 2 may be magnetic in a magnetic field. Of course, the blocking member 2 may also be non-magnetic in a magnetic field. This application does not limit this.

[0140] As mentioned above, in some embodiments, the aerosol article 10 includes a magnetic element 30, which is located in the aerosol article 10 and is part of the aerosol article 10. Therefore, when the blocking element 2 is magnetic in a magnetic field, the blocking element 2 can be the aforementioned magnetic element 30.

[0141] As mentioned above, in some embodiments, the magnetic element 30 may include a second magnetic element 32. Therefore, when the blocking element 2 is magnetic in the magnetic field, the blocking element 2 may be the second magnetic element 32 described above.

[0142] This application also provides a method for preparing a magnetic component 30, which specifically includes the following steps:

[0143] S1. Provide carrier material and magnetic particles 22;

[0144] S2. Add magnetic particles 22 to the carrier material and stir evenly to obtain a mixture;

[0145] S3. The mixture is extruded through a mold at a temperature of 50℃-500℃ to obtain magnetic part 30.

[0146] In this embodiment, the magnetic particles 22 can be commercially available magnetic particles, and the carrier material can be commercially available carrier material. In step S1, the mass ratio between the magnetic particles 22 and the carrier material can be (2:8)-(7:3). In step S2, the stirring temperature can be 20℃-30℃, and the stirring can be performed using a mixer.

[0147] In some embodiments, the carrier material is cellulose acetate, and the magnetic element 30 is prepared by a spinning process from a stock solution containing magnetic particles 22 and cellulose acetate. Specifically, the process includes the following steps: S11, providing a stock solution containing cellulose acetate and magnetic particles 22;

[0148] S12. The original solution is prepared into a magnetic component 30 by a spinning process. The magnetic component 30 includes cellulose acetate and magnetic particles 22 dispersed in cellulose acetate.

[0149] In this embodiment, the magnetic particles 22 can be commercially available magnetic particles, and the cellulose acetate can be commercially available cellulose acetate. In the stock solution, the mass ratio between the magnetic particles and cellulose acetate can be (2:8)-(7:3).

[0150] The aerosol products of this application will be further described below through specific embodiments.

[0151] Example 1

[0152] A cylindrical aerosol product includes a tube, a filter, a cooling element, an aerosol generating element, and a blocking element. The filter, cooling element, aerosol generating element, and blocking element are sequentially fixed in the tube along the axial direction of the aerosol product. The tube is made of rigid paper, the filter is made of sponge, and the cooling element is made of cellulose acetate. The aerosol generating element has an outer diameter of 6.4 mm and an axial length of 12 mm. The aerosol generating element includes an aerosol generating matrix and a sensor. The aerosol generating matrix is ​​tobacco paste, and the sensor is inserted into the central axis region of the tobacco paste. The sensor is a 0.1 mm x 3.83 mm x 11 mm iron-nickel-zirconium based magnetic metal sheet, and the mass of the sensor is 32.4 mg.

[0153] The blocking component has an axial length of 5 mm, an outer diameter of 6.4 mm, a total mass of 196 mg, and is carried by silica gel. The silica gel contains uniformly dispersed ferrite magnetic powder particles with an average particle size of 25 micrometers. The ferrite magnetic powder particles account for 30 wt% of the mass of the blocking component, and the weight of the ferrite magnetic powder particles is 58.8 mg. The mass ratio of ferrite magnetic powder particles to the sensor is 1.8:1.

[0154] Example 2

[0155] The main difference between Example 2 and Example 1 is:

[0156] The aerosol product includes a tube body, a filter, a cooling component, an aerosol generating component, and a blocking component. The filter, cooling component, blocking component, and aerosol generating component are fixed sequentially in the tube body along the axial direction of the aerosol product.

[0157] Example 3

[0158] The main difference between Example 3 and Example 1 is:

[0159] The aerosol product includes a tube body, a filter nozzle, a cooling component, an aerosol generating component, a first blocking component, and a second blocking component. The filter nozzle, cooling component, first blocking component, aerosol generating component, and second blocking component are sequentially fixed in the tube body along the axial direction of the aerosol product. The first blocking component and the second blocking component have the same structure and composition. The axial length of the first blocking component and the second blocking component are both 5 mm, and the outer diameter is both 6.4 mm. The mass of the first blocking component and the second blocking component is both 196 mg. The carrier of the first blocking component and the second blocking component is both silica gel. Ferrite magnetic powder particles with an average particle size of 25 micrometers are uniformly dispersed in the silica gel. The mass percentage of ferrite magnetic powder particles in the first blocking component and the second blocking component is 30 wt%.

[0160] Example 4

[0161] The main difference between Example 4 and Example 1 is:

[0162] The ferrite magnetic powder particles have a mass percentage of 20 wt% in the blocking component, a weight of 39.2 mg, and a mass ratio of ferrite magnetic powder particles to the sensor of 1.2:1.

[0163] Example 5

[0164] The main difference between Example 5 and Example 1 is:

[0165] The ferrite magnetic powder particles have a mass percentage of 60 wt% in the blocking component, a weight of 117.6 mg, and a mass ratio of ferrite magnetic powder particles to the sensor of 3.6:1.

[0166] Example 6

[0167] The main difference between Example 6 and Example 1 is:

[0168] The ferrite magnetic powder particles have a mass percentage of 70 wt% in the blocking component, a weight of 137.2 mg, and a mass ratio of ferrite magnetic powder particles to the sensor of 4.2:1.

[0169] Example 7

[0170] The main difference between Example 7 and Example 1 is:

[0171] The magnetic particles are made of permalloy magnetic powder particles, and the sensor is made of iron-aluminum alloy magnetic metal sheet.

[0172] Example 8

[0173] The main difference between Example 8 and Example 1 is:

[0174] The ferrite magnetic powder particles have a mass percentage of 5 wt% in the blocking component, a weight of 9.8 mg, and a mass ratio of ferrite magnetic powder particles to the sensor of 0.3:1.

[0175] Example 9

[0176] The main difference between Example 9 and Example 1 is:

[0177] The ferrite magnetic powder particles have a mass percentage of 10 wt% in the blocking component, a weight of 19.6 mg, and a mass ratio of ferrite magnetic powder particles to the sensor of 0.6:1.

[0178] Example 10

[0179] The main difference between Example 10 and Example 1 is:

[0180] The ferrite magnetic powder particles have a mass percentage of 80 wt% in the blocking component, a weight of 156.8 mg, and a mass ratio of ferrite magnetic powder particles to the sensor of 4.8:1.

[0181] Comparative Example 1

[0182] A cylindrical aerosol product includes a tube, a filter, a cooling element, and an aerosol generating element. The filter, cooling element, and aerosol generating element are sequentially fixed in the tube along the axial direction of the aerosol product. The tube is a rigid tube, the filter is made of sponge, and the cooling element is made of cellulose acetate. The aerosol generating element has an outer diameter of 6.4 mm and an axial length of 12 mm. The aerosol generating element includes an aerosol generating matrix and a sensor. The aerosol generating matrix is ​​tobacco paste, and the sensor is inserted into the central axis region of the tobacco paste. The sensor is a 0.1 mm x 3.83 mm x 11 mm iron-nickel-zirconium based magnetic metal sheet, and the mass of the sensor is 32.4 mg.

[0183] Test method:

[0184] (I) The aerosol products of Examples 1 to 10 and Comparative Example 1 were assembled into smoking devices containing induction coils. The smoking devices used were UVOO Y1 electromagnetic induction smoking devices manufactured by Yunxi Intelligent. Based on the key bridging role of the magnetoelectric properties of the sensor, a connection was established between the power supply circuit current, the magnetic strength of the sensor, and the sensor temperature. During the preheating stage, the aerosol generating device control system judged whether the behavior of the power supply circuit current change caused by the change in sensor temperature conformed to the preset change trend to determine whether the aerosol product passed the identification operation. When the identification failed, the smoking device stopped preheating and turned off, and the identification pass rate of the aerosol product was recorded. At the same time, a YPS ultra-micro K-type thermocouple thermometer manufactured by Beijing Youpus Technology Center was embedded in the center of the aerosol generating matrix section and in contact with the sensor to record the temperature data of the sensor during use. The data logger (Keysight) recorded the temperature data of the sensor. The sampling frequency of the aerosol product (34972A) was 10 Hz, and the preheating time was recorded from the time the aerosol product was inserted into the aerosol generator until it reached the expected stable heating temperature Tw (set to 350°C). Samples that failed the identification were not included in the preheating time statistics. 200 aerosol product samples were tested in each embodiment and comparative example configuration. The experimental results are shown in Table 1.

[0185] Table 1

[0186] Figure 7 is a 35x magnified SEM image of a cross-sectional section of the blocking component of Embodiment 1 of this application; Figure 8 is a 1000x magnified SEM image of a cross-sectional section of the blocking component of Embodiment 1 of this application. Figure 7 shows that the blocking component has vent holes, and the gray-white area in Figure 7 is magnetic particles, while the dark gray area is the carrier; it can be clearly seen from Figure 8 that multiple magnetic particles are uniformly distributed in the carrier.

[0187] Analysis of Examples 1 to 10 and Comparative Example 1 shows that incorporating a blocking component containing magnetic particles into the aerosol product can improve the recognition rate of the aerosol product through the smoking device identification operation. Simultaneously, it can increase the heating speed of the sensor and shorten the time it takes for the sensor to reach the expected stable operating temperature. The reason may be that the magnetic particles can be effectively magnetized in a magnetic field, thus becoming an additional magnetic source. The magnetic field generated by the magnetic particles can couple with the magnetic field generated by the induction coil, enhancing the overall magnetism of the aerosol product. The magnetic particles ensure that even with processing or assembly errors, the sensor can still generate a preset magnetic strength in the enhanced magnetic field, increasing the probability of the aerosol product passing the identification operation. Furthermore, the magnetic particles themselves are very fine, and their heating is not significant. This allows the magnetic particles to significantly enhance the overall magnetism of the aerosol product without causing a significant eddy current heating effect. This allows the aerosol product to have a strong power input, with most of this power input being converted to the sensor, increasing the sensor's heating speed. In addition, magnetic particles can reduce temperature overshoot and magnetic energy loss in the sensor. While constructing more internal magnetic circuits, magnetic particles reduce the energy loss of the system and stabilize the stability of the feedback signal of inductance change. This is conducive to stable temperature control of the magnetic excitation system. At the same time, the magnetic particles themselves have limited heat generation, which can reduce unnecessary heating of nearby components by obstruction components. This makes the magnetic field coupling, heating and operation of nearby components of the entire system more stable, which further facilitates more stable temperature control of the sensor, increases the probability of aerosol products passing the recognition operation and the heating speed of the sensor.

[0188] Analysis of Examples 1-7 and Examples 8-10 shows that controlling the mass of the magnetic particles and the mass ratio of the magnetic particles to the sensor within an appropriate range can further improve the recognition rate of aerosol products through the smoking device identification operation and increase the heating speed of the sensor.

[0189] The aerosol generating device of this application will be further described below through specific embodiments.

[0190] Example 11

[0191] An aerosol generating device includes an aerosol product, a base, an induction coil, and a magnetic component. The base has a heating chamber for accommodating the aerosol product. The induction coil surrounds the heating chamber to generate a magnetic field within the heating chamber. The heating chamber has an opening for taking out and placing the aerosol product. The chamber wall includes a side wall and a bottom wall, with the bottom wall located on the side of the chamber wall away from the opening. The distance between the magnetic component and the induction coil in the axial direction of the heating chamber is 6 mm.

[0192] The aerosol product includes a tube body, a filter, a cooling element, and an aerosol generating element. The filter, cooling element, and aerosol generating element are sequentially fixed in the tube body along the axial direction of the aerosol product. The tube body is a rigid paper tube, the filter is made of sponge, and the cooling element is made of cellulose acetate. The aerosol generating element has an outer diameter of 6.4 mm and an axial length of 12 mm. The aerosol generating element includes an aerosol generating matrix and a sensor. The aerosol generating matrix is ​​tobacco paste, and the sensor is inserted into the central axis region of the tobacco paste. The sensor is a 0.1 mm x 3.83 mm x 11 mm iron-nickel-zirconium based magnetic metal sheet, and the mass of the sensor is 32.4 mg.

[0193] The magnetic component has an axial length of 4 mm, an outer diameter of 5 mm, a total mass of 196 mg, and is carried by silica gel. Ferrite magnetic particles with an average particle size of 25 micrometers are uniformly dispersed in the silica gel. The ferrite magnetic particles account for 30 wt% of the magnetic component and weigh 58.8 mg. The mass ratio of ferrite magnetic particles to the sensor is 1.8:1.

[0194] Example 12

[0195] The main difference between Example 12 and Example 11 is:

[0196] The ferrite magnetic particles constitute 20 wt% of the magnetic component, the weight of the ferrite magnetic particles is 39.2 mg, and the mass ratio of the ferrite magnetic particles to the sensor is 1.2:1.

[0197] Example 13

[0198] The main difference between Example 13 and Example 11 is:

[0199] The ferrite magnetic particles constitute 60 wt% of the magnetic component, weigh 117.6 mg, and have a mass ratio of ferrite magnetic particles to the sensor of 3.6:1.

[0200] Example 14

[0201] The main difference between Example 14 and Example 11 is:

[0202] The ferrite magnetic particles constitute 70 wt% of the magnetic component, weigh 137.2 mg, and have a mass ratio of ferrite magnetic particles to the sensor of 4.2:1.

[0203] Example 15

[0204] The main difference between Example 15 and Example 11 is:

[0205] The magnetic particles are made of permalloy magnetic powder, and the sensor is made of iron-aluminum alloy magnetic metal sheet.

[0206] Example 16

[0207] An aerosol generating device includes an aerosol product, a base, an induction coil, and a magnetic component; the base has a heating chamber for accommodating the aerosol product, the induction coil surrounds the heating chamber to generate a magnetic field within the heating chamber, the heating chamber has an opening for taking out and placing the aerosol product, and the chamber wall includes a side wall and a bottom wall, with the bottom wall located on the side of the chamber wall away from the opening.

[0208] The magnetic component includes a first magnetic component and a second magnetic component. The first magnetic component is fixed to the bottom wall of the heating chamber, and the distance between the first magnetic component and the induction coil in the axial direction of the heating chamber is 6 mm.

[0209] The aerosol product includes a tube body, a filter, a cooling element, an aerosol generating element, and a second magnetic element. The filter, cooling element, aerosol generating element, and second magnetic element are sequentially fixed in the tube body along the axial direction of the aerosol product. The tube body is a rigid paper tube, the filter is made of sponge, and the cooling element is made of cellulose acetate. The outer diameter of the aerosol generating element is 6.4 mm and the axial length is 12 mm. The aerosol generating element includes an aerosol generating matrix and a sensor. The aerosol generating matrix is ​​tobacco paste, and the sensor is inserted into the central axis region of the tobacco paste. The sensor is a 0.1 mm x 3.83 mm x 11 mm iron-nickel-zirconium based magnetic metal sheet, and the mass of the sensor is 32.4 mg.

[0210] The first magnetic component has an axial length of 2 mm and an outer diameter of 5 mm. The total mass of the first magnetic component is 98 mg. The carrier of the first magnetic component is silica gel. Ferrite magnetic particles with an average particle size of 25 micrometers are uniformly dispersed in the silica gel. The mass percentage of the ferrite magnetic particles in the magnetic component is 20 wt%, and the weight of the ferrite magnetic particles is 19.6 mg.

[0211] The second magnetic component has an axial length of 3 mm, an outer diameter of 6.4 mm, a total mass of 98 mg, and is carried by silica gel. Ferrite magnetic powder particles with an average particle size of 25 micrometers are uniformly dispersed in the silica gel. The ferrite magnetic powder particles in the second magnetic component have a mass percentage of 20 wt% and a weight of 19.6 mg.

[0212] The total mass W1 of the ferrite magnetic powder particles of the first magnetic component and the ferrite magnetic particles of the second magnetic component is 39.2 mg, and the mass ratio of W1 to the mass of the sensor is 1.2:1.

[0213] Example 17

[0214] The main difference between Example 17 and Example 16 is as follows:

[0215] The first magnetic component has an axial length of 2 mm and an outer diameter of 5 mm. The total mass of the first magnetic component is 98 mg. The carrier of the first magnetic component is silicone. Ferrite magnetic particles with an average particle size of 25 micrometers are uniformly dispersed in the silicone. The mass percentage of the ferrite magnetic particles in the magnetic component is 70 wt%, and the weight of the ferrite magnetic particles is 68.6 mg.

[0216] The second magnetic component has an axial length of 5 mm, an outer diameter of 6.4 mm, a total mass of 98 mg, and is carried by silica gel. Ferrite magnetic powder particles with an average particle size of 25 micrometers are uniformly dispersed in the silica gel. The ferrite magnetic powder particles in the second magnetic component have a mass percentage of 70 wt% and a weight of 68.6 mg.

[0217] The total mass W1 of the ferrite magnetic powder particles of the first magnetic component and the ferrite magnetic particles of the second magnetic component is 137.2 mg, and the mass ratio of W1 to the sensor is 4.2:1.

[0218] Example 18

[0219] The main difference between Example 18 and Example 11 is:

[0220] The ferrite magnetic particles have a mass percentage of 5 wt% in the magnetic component, a weight of 9.8 mg, and a mass ratio of ferrite magnetic particles to the sensor of 0.3:1.

[0221] Example 19

[0222] The main difference between Example 19 and Example 11 is:

[0223] The ferrite magnetic particles have a mass percentage of 10 wt% in the magnetic component, a weight of 19.6 mg, and a mass ratio of ferrite magnetic particles to the sensor of 0.6:1.

[0224] Example 20

[0225] The main difference between Example 20 and Example 11 is:

[0226] The ferrite magnetic particles constitute 80 wt% of the magnetic component, weigh 156.8 mg, and have a mass ratio of ferrite magnetic particles to the sensor of 4.8:1.

[0227] Comparative Example 2

[0228] An aerosol generating device includes an aerosol product, a base, and an induction coil; the base has a heating chamber for accommodating the aerosol product, the induction coil surrounds the heating chamber to generate a magnetic field within the heating chamber, and the heating chamber has an opening for taking out and placing the aerosol product.

[0229] The aerosol product includes a tube, a filter, a cooling element, and an aerosol generating element. The filter, cooling element, and aerosol generating element are sequentially fixed in the tube along the axial direction of the aerosol product. The tube is made of rigid paper, the filter is made of sponge, and the cooling element is made of cellulose acetate. The aerosol generating element has an outer diameter of 6.4 mm and an axial length of 12 mm. The aerosol generating element includes an aerosol generating matrix and a sensor. The aerosol generating matrix is ​​tobacco paste, and the sensor is inserted into the central axis region of the tobacco paste. The sensor is a 0.1 mm x 3.83 mm x 11 mm iron-nickel-zirconium based magnetic metal sheet, and the mass of the sensor is 32.4 mg.

[0230] Test method:

[0231] (I) Assemble the aerosol generating devices of Examples 11 to 20 and Comparative Example 2. Based on the key bridging role of the magnetoelectric properties of the sensor, establish the relationship between the power supply circuit current and the magnetic strength and temperature of the sensor. During the preheating stage, the control system of the aerosol generating device judges whether the behavior of the power supply circuit current change caused by the change in sensor temperature conforms to the preset change trend to determine whether the aerosol product passes the identification operation. When the identification fails, the aerosol generating device stops preheating and shuts down, and records the identification pass rate of the aerosol product. At the same time, a YPS ultra-micro K-type thermocouple thermometer produced by Beijing Youpus Technology Center is embedded in the center of the aerosol generating matrix section and contacts the sensor to record the temperature data of the sensor during use. The sampling frequency of the data logger (Keysight 34972A) is 10Hz, and the time from when the aerosol product is inserted into the aerosol generating device to when it reaches the expected stable heating temperature Tw (set to 350℃ here) is recorded as the preheating time. The preheating time does not include samples that fail identification. Each embodiment and comparative example configuration tested 200 aerosol generator samples.

[0232] The experimental results are shown in Table 2.

[0233] Table 2

[0234] Analysis of Examples 11 to 20 and Comparative Example 2 shows that incorporating a magnetic component containing magnetic particles into the aerosol generator can improve the recognition rate of aerosol products through the smoking device identification operation. Simultaneously, it can increase the heating speed of the sensor and shorten the time it takes for the sensor to reach the expected stable operating temperature. The reasons may be as follows: Magnetic particles can be effectively magnetized in a magnetic field, thus becoming an additional magnetic source. The magnetic field generated by the magnetic particles can couple with the magnetic field generated by the induction coil, enhancing the magnetic field strength of the magnetic field generated by the aerosol generator. Even with processing or assembly errors, the sensor can still generate a preset magnetic intensity in the enhanced magnetic field, increasing the probability of the aerosol product passing the identification operation. Furthermore, the magnetic particles themselves are very fine, and their heating is not significant. This allows the magnetic particles to significantly improve the overall magnetism of the aerosol product, but without causing a significant eddy current heating effect. This allows the aerosol product to have a strong power input, with most of this power input being converted to the sensor, thus increasing the sensor's heating speed. In addition, magnetic particles can reduce temperature overshoot and magnetic energy loss in the sensor. While constructing more internal magnetic circuits, magnetic particles reduce the energy loss of the system and stabilize the stability of the feedback signal of inductance change, which is conducive to stable temperature control of the magnetic excitation system. At the same time, the magnetic particles themselves have limited heat generation, which can reduce unnecessary heating of nearby components by the magnetic components. This makes the magnetic field coupling, heating and operation of nearby components of the whole system more stable, which further facilitates more stable temperature control of the sensor, increases the probability of aerosol products passing the recognition operation and the heating speed of the sensor.

[0235] Analysis of Examples 11-17 and Examples 18-20 shows that controlling the mass of the magnetic particles and the mass ratio of the magnetic particles to the sensor within an appropriate range can further improve the recognition rate of aerosol products through the recognition operation and the heating speed of the sensor.

[0236] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An aerosol product, the aerosol product comprising an aerosol generating element and a blocking element disposed adjacent to each other; The aerosol generating component includes an aerosol generating matrix and a sensor, the sensor being able to generate thermal energy in a magnetic field to heat the aerosol generating matrix; The blocking element includes a carrier and magnetic particles dispersed in the carrier.

2. The aerosol product according to claim 1, wherein, The mass ratio of the magnetic particle to the receptor is (1.2-4.2):1; and / or The mass of the magnetic particles is 39.2 mg to 137.2 mg.

3. The aerosol product according to claim 1 or 2, wherein, The magnetic particles include at least one of the following: elemental iron, ferrite, ferroalloy, modified graphite, modified graphene, elemental cobalt, cobalt oxide, cobalt alloy, elemental nickel, nickel oxide, and nickel alloy; and / or The material of the sensor includes at least one of the following: Tenets alloy, silicon steel, permalloy, iron-aluminum alloy, Sendast alloy, iron-cobalt alloy, amorphous soft magnetic material, nanocrystalline soft magnetic material, ferrite, and soft magnetic composite material.

4. The aerosol product according to claim 1 or 2, wherein, The magnetic particles have an average particle size of 1 nm to 25000 nm; and / or The magnetic particles have a positive temperature resistivity; and / or The Curie temperature of the receptor is 300℃-500℃; and / or The Curie temperature of the magnetic particles is 300℃-1000℃; and / or The length of the blocking member in the axial direction of the aerosol product is 3mm-10mm; and / or The length of the blocking member in the axial direction of the aerosol product is L1, and the axial length of the aerosol product is L2, where 1:3 ≤ L1 / L2 ≤ 1:10; and / or The length of the blocking member in the axial direction of the aerosol product is L1, and the length of the aerosol generating matrix in the axial direction of the aerosol product is L3, where 1:1≤L1 / L3≤1:

5.

5. The aerosol product according to claim 1 or 2, wherein, The magnetic particles are uniformly distributed in the blocking component; or The concentration of magnetic particles in the blocking member closer to the aerosol generating member is greater than the concentration of magnetic particles in the blocking member farther from the aerosol generating member.

6. The aerosol product according to claim 1 or 2, wherein, The carrier material includes thermal insulation material; and / or The specific heat capacity of the carrier is 1.0 J / (kg·℃) - 2.5 J / (kg·℃); and / or The density of the carrier is 0.5 g / cm³. 3 -2.5g / cm 3 .

7. The aerosol product according to claim 6, wherein, The carrier material includes at least one of silicone, fluoropolymer, cellulose acetate, polypropylene resin, and wood.

8. The aerosol product according to claim 1 or 2, wherein, The blocking element does not contact the sensor.

9. The aerosol product according to claim 8, wherein, The distance between the blocking element and the sensor is greater than 0 and less than or equal to 10 mm.

10. The aerosol product according to claim 1 or 2, wherein, The aerosol product further includes a tube body, a filter nozzle, and a cooling component. The filter nozzle, the cooling component, the aerosol generating component, and the blocking component are located in the tube body, and the filter nozzle, the cooling component, and the aerosol generating component are arranged sequentially along the axial direction of the tube body. The blocking element is located on the side of the aerosol generating element closer to the cooling element, or the blocking element is located on the side of the aerosol generating element away from the cooling element, or there are two blocking elements, and the two blocking elements are distributed along the axial direction of the tube on both sides of the aerosol generating element.

11. An aerosol generating device, comprising an induction coil and an aerosol article as described in any one of claims 1 to 10; The induction coil can generate a magnetic field, and the sensor and the magnetic particle are located in the magnetic field.

12. An aerosol generating device, comprising: An induction coil that generates a magnetic field when energized; A magnetic component is disposed adjacent to the induction coil. The magnetic component includes a carrier and magnetic particles dispersed in the carrier, and the magnetic particles are capable of being located in the magnetic field.

13. The aerosol generating apparatus according to claim 12, wherein, The central axis of the induction coil can pass through the magnetic element; and / or, The magnetic particles have a mass of 39.2 mg to 137.2 mg; and / or, The magnetic particles have an average particle size of 1 nm to 25000 nm; and / or, The magnetic particles have a positive temperature resistivity; and / or, The Curie temperature of the magnetic particles is 300℃-1000℃; and / or, The magnetic particles include at least one of elemental iron, ferrite, ferroalloy, modified graphite, modified graphene, elemental cobalt, cobalt oxide, cobalt alloy, elemental nickel, nickel oxide, and nickel alloy.

14. The aerosol generating apparatus according to claim 12, wherein, The magnetic particles are uniformly distributed within the magnetic component; or... The concentration of magnetic particles in the magnetic component closer to the induction coil is greater than the concentration of magnetic particles in the magnetic component farther from the induction coil.

15. The aerosol generating apparatus according to claim 12, wherein, The carrier material includes thermal insulation material; and / or, The specific heat capacity of the carrier is 1.0 J / (kg·℃) - 2.5 J / (kg·℃); and / or, The density of the carrier is 0.5 g / cm³. 3 -2.5g / cm 3 .

16. The aerosol generating apparatus according to claim 15, wherein, The carrier material includes at least one of silica gel, fluoropolymer, cellulose acetate, polypropylene resin, and wood; or, The carrier is made of cellulose acetate, and the magnetic component is prepared by a spinning process from a stock solution containing the magnetic particles and the cellulose acetate.

17. The aerosol generating apparatus according to any one of claims 12-16, wherein, The aerosol generating device further includes: An aerosol product having an aerosol generating element, the aerosol generating element including a sensor and an aerosol generating matrix, the sensor being capable of generating heat energy in the magnetic field to heat the aerosol generating matrix; A base having a heating chamber for accommodating the aerosol product, wherein an induction coil surrounds the heating chamber to generate a magnetic field within the heating chamber; The magnetic component is disposed on the base, or the aerosol product further includes the magnetic component, which is disposed adjacent to the aerosol generating component; or the magnetic component includes a first magnetic component and a second magnetic component, the first magnetic component is disposed on the base, and the aerosol product further includes the second magnetic component, the first magnetic component includes the carrier and the magnetic particles, and the second magnetic component includes the carrier and the magnetic particles.

18. The aerosol generating apparatus according to claim 17, wherein, When the magnetic component includes the first magnetic component and the second magnetic component, the second magnetic component and the aerosol generating component are disposed adjacent to each other.

19. The aerosol generating apparatus according to claim 17, wherein, When the magnetic component includes the first magnetic component and the second magnetic component, the first magnetic component is disposed on the cavity wall of the heating chamber, and the second magnetic component is disposed adjacent to the first magnetic component.

20. The aerosol generating apparatus according to claim 18, wherein, The sum of the masses of the magnetic particles in the first magnetic component and the magnetic particles in the second magnetic component is W1, and the mass of the receptor is W2, where 1.2 ≤ W1 / W2 ≤ 4.2; and / or, The sum of the masses of the magnetic particles in the first magnetic component and the magnetic particles in the second magnetic component is 39.2 mg - 137.2 mg; and / or, The material of the sensor includes at least one of the following: Tenets alloy, silicon steel, permalloy, iron-aluminum alloy, Sendstein alloy, iron-cobalt alloy, amorphous soft magnetic material, nanocrystalline soft magnetic material, ferrite, and soft magnetic composite material; and / or, The second magnetic element has a length of 3mm-10mm in the axial direction of the aerosol product; and / or, The second magnetic component has a length L1 in the axial direction of the aerosol product, and the axial length of the aerosol product is L2, where 1:3 ≤ L1 / L2 ≤ 1:10; and / or, The length of the second magnetic component in the axial direction of the aerosol product is L1, and the length of the aerosol generating matrix in the axial direction of the aerosol product is L3, where 1:1 ≤ L1 / L3 ≤ 1:5; and / or, The magnetic particles are uniformly distributed in the second magnetic element, or the concentration of the magnetic particles on the side of the second magnetic element closer to the aerosol generating element is greater than the concentration of the magnetic particles on the side of the second magnetic element farther from the aerosol generating element; and / or, The Curie temperature of the magnetic particles is lower than the Curie temperature of the receptor; and / or, The distance between the second magnetic element and the sensor is greater than 0 and less than or equal to 10 mm; and / or, The aerosol product further includes a tube, a filter, and a cooling element. The filter, the cooling element, the aerosol generating element, and the second magnetic element are located in the tube. The filter, the cooling element, and the aerosol generating element are arranged sequentially along the axial direction of the tube. The second magnetic element is located on the side of the aerosol generating element closer to the cooling element, or the second magnetic element is located on the side of the aerosol generating element farther from the cooling element, or there are two second magnetic elements, which are distributed on both sides of the aerosol generating element along the axial direction of the tube.

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