Aerosol-generating article, aerosol-generating system, heating device, and susceptor

Abstract

The invention provides an aerosol generating product, an aerosol generating system, a heating device and a receptor. Wherein the aerosol-generating article comprises: an aerosol-generating substrate configured to generate an aerosol when heated; the receptor can generate eddy current in a changing magnetic field to generate heat so as to heat the aerosol generating substrate; the susceptor is configured to be a cylindrical shape wound from a mesh sheet formed by perforating a densified precursor. According to the aerosol-generating article, the susceptor is formed by winding a mesh-shaped sheet formed by punching a dense precursor, and the punched mesh-shaped sheet is easier to carry out for the winding operation; meanwhile, the quality of the susceptor is reduced, the temperature rise rate of the susceptor can be improved, and the electrical characteristics such as the Q value, the equivalent impedance or the equivalent inductance value of an access circuit can be adjusted.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of heat-not-burn aerosol generation, and particularly to an aerosol generating article, an aerosol generating system, a heating device and a sensor. Background Art

[0002] During use, tobacco products (such as cigarettes, cigars, etc.) burn tobacco to produce tobacco smoke. People have tried to replace these tobacco-burning products by making products that release compounds without burning.

[0003] An example of such a product is a heating device that releases compounds by heating rather than burning materials. For example, the material can be tobacco or other non-tobacco products, which may or may not contain nicotine. Known tobacco or other non-tobacco products are heated by arranging an inductive sensor, such as a sheet-like metal sensor, inside to induce eddy currents in the sensor to generate heat for heating the tobacco or other non-tobacco products. Summary of the Invention

[0004] An embodiment of the present application provides an aerosol generating article, comprising:

[0005] An aerosol generating matrix configured to generate an aerosol when heated;

[0006] A sensor capable of generating eddy currents and heating up in a changing magnetic field to heat the aerosol generating matrix; the sensor is configured as a cylindrical shape wound by a mesh sheet, and the mesh sheet is formed by punching holes in a dense precursor.

[0007] In some embodiments, the mesh sheet is formed by mechanical punching, laser punching or chemical etching of the dense precursor to form holes.

[0008] In some embodiments, the sensor is non-closed in the circumferential direction;

[0009] And / or, side openings extending longitudinally through the sensor are arranged on the sensor.

[0010] In some embodiments, the sensor is arranged around the aerosol generating matrix;

[0011] And / or, part of the aerosol generating matrix is located inside the sensor and part is located outside the sensor.

[0012] In some embodiments, the ratio of the area of the mesh holes of the sensor to the total area of the sensor is between 30% and 70%.

[0013] In some embodiments, the aperture diameter or width of the mesh holes of the sensor is between 20 microns and 2000 microns.

[0014] In some embodiments, the mesh sheet is formed by perforating a dense precursor.

[0015] In some embodiments, the mesh sheet includes only a single layer of sensitive material.

[0016] In some embodiments, the receptor comprises 40 wt% to 99.9 wt% iron;

[0017] Alternatively, the receptor comprises permalloy with an alloy grade of 1J50 or 1J85;

[0018] Alternatively, the mass percentage of iron in the receptor ranges from 15 wt% to 85 wt%, and the mass percentage of nickel does not exceed 85 wt%;

[0019] Alternatively, the receptor comprises iron and a metal protective layer coated, sprayed or deposited on the surface of the iron;

[0020] Alternatively, the receptor 1150 comprises 430 stainless steel with a chromium content of 16 wt% to 18 wt%.

[0021] Another embodiment of the present application further provides an aerosol generating system, comprising:

[0022] The aerosol generating article described above;

[0023] A heating device, comprising:

[0024] A chamber for removably receiving the aerosol generating article;

[0025] An induction coil disposed around the chamber for generating a changing magnetic field; when the aerosol generating article is received in the chamber, the induction coil is inductively coupled to the receptor of the aerosol generating article to induce eddy current heating in the receptor through the changing magnetic field.

[0026] In some embodiments, it further comprises:

[0027] A capacitor, which forms an LC oscillator with the induction coil; the LC oscillator is configured to direct a changing current through the induction coil to generate a changing magnetic field, and further drive the induction coil to supply energy to the receptor to heat the aerosol generating substrate by the receptor;

[0028] A controller configured to control the oscillation of the LC oscillator to form a current flowing through the induction coil, and further control the energy supplied to the receptor so that the receptor heats the aerosol generating substrate according to a predetermined heating curve.

[0029] In some embodiments, the predetermined heating curve includes a plurality of stepwise temperature increases.

[0030] Another embodiment of the present application further provides a heating device configured to heat an aerosol-generating article including an aerosol-generating substrate to generate an aerosol; the heating device includes:

[0031] a chamber for receiving the aerosol-generating article;

[0032] a susceptor located within or around the chamber, capable of generating eddy currents in a changing magnetic field to generate heat and thereby heat the aerosol-generating substrate of the aerosol-generating article; the susceptor is configured to be a cylindrical shape wound by a reticulated sheet, and the reticulated sheet is formed by punching holes in a dense precursor;

[0033] an induction coil for generating a changing magnetic field.

[0034] Another embodiment of the present application further provides a susceptor for an aerosol-generating system, for heating the aerosol-generating substrate of an aerosol-generating article; the susceptor is configured to be a cylindrical shape wound by a reticulated sheet, and the reticulated sheet is formed by punching holes in a dense precursor.

[0035] For the above aerosol-generating article, the susceptor is formed by winding a reticulated sheet formed by punching holes in a dense precursor. The punched reticulated sheet facilitates the winding operation; at the same time, it also reduces the mass of the susceptor, helps to increase the heating rate of the susceptor, and adjusts electrical characteristics such as the Q value, equivalent impedance, or equivalent inductance value of the access circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the figures do not constitute a scale limitation.

[0037] Figure 1 is a schematic structural diagram of an aerosol-generating article from one perspective provided by an embodiment;

[0038] Figure 2 is Figure 1 a schematic cross-sectional view of the aerosol-generating article from one perspective in;

[0039] Figure 3 is Figure 2 a schematic structural diagram of the susceptor from another perspective in;

[0040] Figure 4 is a schematic diagram of a reticulated sheet for winding to form the susceptor in one embodiment; Figure 3 the susceptor in;

[0041] Figure 5 Schematic diagram of making a mesh sheet by drilling holes in a dense sheet with a drill bit in one embodiment;

[0042] Figure 6 is Figure 5 Schematic diagram of the drill bit penetrating the dense sheet in;

[0043] Figure 7 Schematic diagram of winding a mesh sheet of a material on which an aerosol - generating substrate is arranged or deposited;

[0044] Figure 8 Schematic diagram of a wound susceptor in yet another variant embodiment;

[0045] Figure 9 In one embodiment includes Figure 2 Schematic diagram of the structure of an aerosol - generating system of an aerosol - generating article and a heating device;

[0046] Figure 10 Schematic diagram of an aerosol - generating article in yet another embodiment;

[0047] Figure 11 Schematic diagram of the structure of an aerosol - generating system in yet another embodiment;

[0048] Figure 12 Schematic diagram of the basic components of an embodiment of a circuit arranged on a circuit board;

[0049] Figure 13 Schematic diagram of a predetermined heating curve for heating an aerosol - generating article proposed in one embodiment;

[0050] Figure 14 Schematic diagram of a mesh sheet formed by drilling holes in a dense sheet in yet another embodiment. Detailed implementation manners

[0051] For ease of understanding this application, the following will provide a more detailed description of this application in conjunction with the accompanying drawings and specific implementation manners.

[0052] One embodiment of this application proposes a heated aerosol - generating article including a plurality of elements assembled in the form of strips, capable of generating an aerosol when heated.

[0053] For example Figure 1 and Figure 2 are schematic diagrams of an aerosol - generating article 1000 in one embodiment. According to Figure 1 and Figure 2As shown, the aerosol-generating article 1000 includes an upstream end 1100 and a downstream end 1200 that face away from each other; as used herein, the terms 'upstream' and 'downstream' are used to describe the relative positions of the components of the aerosol-generating article 1000, or parts of the components, with respect to the direction in which a user draws on the aerosol-generating article 1000 during its use. The downstream can be in the direction close to the user's draw, and correspondingly the upstream is in the direction away from the user; also, the upstream is the direction in which external air enters the aerosol-generating article 1000, and the downstream is the direction in which the aerosol-containing air stream exits the aerosol-generating article 1000. In use, the aerosol generated by heating within the aerosol-generating article 1000 passes through the downstream end 1200 and is conveyed to the user after leaving the aerosol-generating article from the downstream end 1200. In use, the user can draw on the downstream end 1200 to inhale the aerosol.

[0054] wherein in Figure 1 and Figure 2 in the illustrated embodiment, for the convenience of use based on the typical user draw, the overall appearance of the aerosol-generating article 1000 has a longitudinally elongated cylindrical configuration. Alternatively, in some further variant embodiments, the aerosol-generating article 1000 can be longitudinally elongated elliptical cylindrical, square cylindrical, polygonal cylindrical, etc.

[0055] The appearance of the aerosol-generating article 1000 can mimic the appearance of a conventional ignitable cigarette for smoking. The aerosol-generating article 1000 can have an outer diameter between approximately 5 mm and 12 mm (e.g., between approximately 5 mm and 10 mm). And the aerosol-generating article 1000 has a total length between approximately 40 and 100 mm, and in alternative embodiments, the aerosol-generating article 1000 has a total length of approximately 45 to 55 mm.

[0056] According to Figure 1 and Figure 2 as shown, the aerosol-generating article 1000 includes a plurality of components arranged coaxially from the upstream end 1100 towards the downstream end 1200:

[0057] an aerosol-generating substrate 1130, a cooling element 1120, and a filter element 1110. These components are arranged in sequence and are restricted by an outer wrapper 1160 to form the aerosol-generating article 1000. Wherein:

[0058] An aerosol - generating substrate 1130, adjacent to and defining an upstream end 1100; the aerosol - generating substrate 1130 is used to describe a matrix capable of releasing volatile compounds upon heating, and these volatile compounds can form an aerosol. The aerosol described herein can be visible or invisible and can include vapors (e.g., fine particles of a substance, these particles being in the gaseous state, which are usually liquid or solid at room temperature), as well as droplets of gas and condensed vapor. The aerosol - generating substrate 1130 can include, for example, one or more of the following: powders, granules, pellets, flakes, strands, strips or sheets, which contain one or more of the following: dried flowers or leaves, grass leaves, tobacco leaves, tobacco midribs, expanded tobacco, and homogenized tobacco. In an alternative embodiment, the aerosol - generating substrate 1130 includes an aggregated sheet of wrinkled homogenized tobacco material, which is restricted by an outer wrapper 1160; the aggregated sheet of wrinkled homogenized tobacco material includes glycerol as an aerosol - forming agent.

[0059] A cooling element 1120 is arranged immediately downstream of the aerosol - generating substrate 1130 and is adjacent to the aerosol - generating substrate 1130. In use, the cooling element 1120 is used, on the one hand, to provide support to the aerosol - generating substrate 1130 downstream, and on the other hand, the volatile substances released after the aerosol - generating substrate 1130 is heated pass along the cooling element 1120 towards the proximal end 11 of the aerosol - generating article, and the volatile substances can be cooled down within the cooling element 1120 to form an aerosol for the user to inhale. In Figure 2 the alternative embodiment shown, the cooling element 1120 includes a cooling cavity 1121 that extends along the length of the cooling element 1120. Through the above - mentioned axially extending cooling cavity 1121, the air flow passing through the cooling element 1120 is in the longitudinal direction without significant radial deviation. The cooling element 1120 can act to cool the temperature of the aerosol stream being drawn through it by heat transfer. The components of the aerosol will interact with the space within the cooling element 1120 and lose thermal energy. The cooling element 1120 can include ceramics, metals, or organic polymer plastics, etc. In some embodiments, the temperature of the aerosol stream may decrease by more than 10 degrees Celsius as it is drawn through the cooling element 1120. In some embodiments, the temperature of the aerosol stream may decrease by more than 25 degrees Celsius or more than 30 degrees Celsius as it is drawn through the cooling element 1120.

[0060] A filter element 1110 is arranged immediately downstream of the cooling element 1120 and defines a downstream end 1200, and is adjacent to the cooling element 1120 for filtering the aerosol before it is delivered to the user. In Figure 2 the embodiment shown, the filter element 1110 includes a conventional cellulose acetate or polypropylene tow filter tip with a low filtration efficiency.

[0061] To assemble the aerosol-generating article 1000, the multiple components described above are aligned and tightly wrapped within an outer wrapper 1160. In the embodiments shown in Figure 1 and Figure 2 , the outer wrapper 1160 is a conventional cigarette paper, fibrous material, organic polymer, etc.

[0062] According to Figure 1 and Figure 2 shown, the aerosol-generating article 1000 further includes:

[0063] A susceptor 1150, arranged to extend along the axial direction of the aerosol-generating article 1000 and surrounding the aerosol-generating substrate 1130; in use, the susceptor 1150 can generate eddy currents and heat up in a changing magnetic field, thereby heating the aerosol-generating substrate 1130 from the outside to generate an aerosol.

[0064] During a puff, the airflow through the aerosol-generating article 1000 is as shown by the arrow R12 in Figure 2 , air enters from the upstream end 1100 and flows downstream, and finally carries the aerosol generated by the aerosol-generating substrate 1130 and outputs it to the user through the filter element 1110 at the downstream end 1200.

[0065] Or in some further alternative embodiments, the aerosol-generating article 1000 may further include more functional components; for example, the aerosol-generating article 1000 may further include a flavor component located in the aerosol-generating substrate 1130 to increase the flavor of the generated aerosol, etc.

[0066] According to Figures 2 to 7 shown, the susceptor 1150 is configured to be arranged to extend along the longitudinal direction of the aerosol-generating article 1000. Or in some further alternative embodiments, the susceptors 1150 may be inclined relative to the longitudinal axis of the aerosol-generating article 1000. The extension length of the susceptor 1150 is not less than 70% of the extension length of the aerosol-generating substrate 1130. In some embodiments, the extension length of the aerosol-generating substrate 1130 is approximately 10 - 18 mm, specifically approximately 12 mm; correspondingly, the extension length of the susceptor 1150 is approximately 8 - 15 mm, specifically approximately 11 - 12 mm.

[0067] In Figure 2In the illustrated embodiment, the extended length of the susceptor 1150 is equal to the extended length of the aerosol-forming substrate 1130, such that the susceptor 1150 can extend to or through the longitudinal end opposite to the aerosol-forming substrate 1130, which can help provide more complete heating of the aerosol-forming substrate 1130 during use to avoid waste of the substrate material. Alternatively, in some embodiments, the length of the susceptor 1150 is less than the length of the aerosol-forming substrate 1130, and the susceptor 1150 avoids the two longitudinal ends opposite to the aerosol-forming substrate 1130; or in some embodiments, the susceptor 1150 may not extend to any of the two longitudinal ends opposite to the aerosol-forming substrate 1130, or may only extend to one of the two longitudinal ends of the aerosol-forming substrate 1130 and be spaced apart from the other.

[0068] According to Figures 2 to 7 As shown, the tubular susceptor 1150 is formed by winding a mesh sheet 1150a. In Figure 3 the embodiment, the tubular susceptor 1150 wound by the mesh sheet 1150a is in a cylindrical shape; in still other variant embodiments, the susceptor 1150 may be in a tubular shape such as an elliptical cylinder, a triangular cylinder, a square cylinder, etc. In Figures 2 to 7 the illustrated embodiment, the wound tubular susceptor 1150 completely surrounds the aerosol-forming substrate 1130 such that the aerosol-forming substrate 1130 is surrounded by the susceptor 1150.

[0069] The mesh sheet 1150a having the mesh holes 1152a is wound to form the susceptor 1150, and the presence of the mesh holes 1152a is beneficial for making the winding operation of the mesh sheet 1150a easier. At the same time, by means of the mesh holes 1152a, the mass of the susceptor 1150 is reduced, which on the one hand helps to increase the heating rate of the susceptor 1150, and on the other hand, the mesh holes 1152a reduce the volume of the susceptor 1150 to adjust the electrical characteristics such as the Q value, equivalent impedance or equivalent inductance value of the susceptor 1150 connected to the circuit after being coupled to the induction coil 40a, so as to keep these electrical characteristics within a suitable range.

[0070] In Figures 2 to 7 the illustrated embodiment, the wound tubular susceptor 1150 is continuous; or, the wound tubular susceptor 1150 is not discrete and separated from each other in multiple parts. In Figures 2 to 7 the illustrated embodiment, the wound tubular susceptor 1150 is fluid-permeable, and the fluid-permeable property can help air or aerosol to pass through the susceptor 1150, improving the absorption and utilization efficiency of the heat of the susceptor 1150 by the aerosol-forming substrate 1130. In Figures 2 to 7 the illustrated embodiment, the susceptor 1150 is in a mesh shape with several or multiple perforations, such that the susceptor 1150 is fluid-permeable.

[0071] In Figures 2 to 7 the illustrated embodiment, the perforations of the wound cylindrical receptor 1150 are defined by the mesh holes 1152a of the mesh sheet 1150a. According to Figures 2 to 7 the illustration, the mesh sheet 1150a is formed by pore-forming a dense precursor 1153a; and the mesh sheet 1150a is not formed by weaving filaments. In some embodiments, pore-forming the dense precursor 1153a may include at least one of mechanical punching, laser punching, or chemical etching pore-forming, etc. In Figures 2 to 7 the illustrated embodiment, the mesh sheet 1150a is substantially strip-shaped.

[0072] For example, in Figure 5 and Figure 6 a schematic diagram of pore-forming the dense precursor 1153a by the drill bit 410 of the machining device 400 is shown; as shown by the arrow P1 in Figure 5 , the drill bit 410 of the machining device 400 penetrates through the dense precursor 1153a to punch holes, thereby forming the mesh sheet 1150a having mesh holes 1152a.

[0073] According to Figure 7 the illustration, in the preparation, the material 1130a of the aerosol-generating substrate 1130 is arranged on the mesh sheet 1150a by means of deposition, spraying, or paving, etc., and then the mesh sheet 1150a is wound and wrapped around the material 1130a of the aerosol-generating substrate 1130, as shown by the arrow P2 in Figure 7 ; and then it is wrapped by the outer wrapper 1160, thereby preparing the aerosol-generating article 1000. Further, in Figure 2 the illustrated embodiment, the wound receptor 1150 surrounds and wraps the aerosol-generating substrate 1130. In use, the receptor 1150 heats the aerosol-generating substrate 1130 from the outside to generate an aerosol.

[0074] In some embodiments, the mesh sheet 1150a includes only a single layer of sensitive material, rather than including multiple layers of materials pressed or laminated together; then the wound receptor 1150 also includes only a single layer of material. For example, in some embodiments, the mesh sheet 1150a is prepared from a sensitive metal or alloy, and the sensitive metal or alloy is, for example, at least one of iron or iron alloy, nickel or nickel alloy, cobalt or cobalt alloy, graphite, plain carbon steel, stainless steel, ferritic stainless steel, permalloy, etc. Correspondingly, the wound receptor 1150 also includes the above-mentioned sensitive metal or alloy, so that it can be penetrated by a changing magnetic field and generate heat.

[0075] In some other embodiments, the receptor 1150 comprises 40 wt% to 99.9 wt% iron; the receptor 1150 further comprises at least one of, but not limited to, chromium, manganese, silicon, molybdenum, copper, etc. In some other embodiments, the main components of the receptor 1150 include iron and nickel.

[0076] In some specific embodiments, the receptor 1150 comprises permalloy with alloy grade 1J50 or 1J85; for example, in the receptor 1150 made of permalloy, the mass percentage of iron ranges from 15 wt% to 85 wt%, and the mass percentage of nickel does not exceed 85 wt%.

[0077] In some other embodiments, the receptor 1150 comprises iron and a metal protective layer such as a nickel layer coated, sprayed or deposited on the surface of the iron to prevent the receptor 1150 from being corroded.

[0078] In some other specific embodiments, the receptor 1150 comprises 430 stainless steel with a chromium content of 16 wt% to 18 wt%.

[0079] In some other embodiments, the Curie temperature of the receptor 1150 is more than 50 °C higher than the maximum heating temperature suitable for the aerosol - generating substrate 1130 during use; for example, in some specific embodiments, the maximum heating temperature suitable for the aerosol - generating substrate 1130 is usually 480 °C, then a material with a Curie temperature of the receptor 1150 greater than 530 °C can be selected for preparation, such as the permalloys 1J50 or 1J85, 430 stainless steel, etc. described above.

[0080] According to Figure 3 As shown, the cylindrical receptor 1150 wound by the mesh sheet 1150a is non - closed in the circumferential direction. For example, in Figure 3 the receptor 1150 has a side opening 1151 extending from the first end to the second end in the longitudinal direction.

[0081] In some embodiments, the aperture diameter or width of the mesh holes of the receptor 1150 wound by the mesh sheet 1150a can be between about 20 microns and about 2000 microns; specifically, the aperture diameter or width of the mesh holes of the receptor 1150 wound by the mesh sheet 1150a can be approximately 150 microns, which is approximately 100 mesh. The ratio of the area of the mesh holes of the receptor 1150 wound by the mesh sheet 1150a to the total area of the receptor 1150 can be between about 30% and about 70%, preferably between about 40% and about 60%. For Figure 3 the cylindrical receptor 1150 in the embodiment shown, its total area can be understood as the product of the circumferential dimension (i.e., the circumference) and the longitudinal length.

[0082] In some embodiments, the mesh holes 1152a of the mesh sheet 1150a are in the shape of a circle, oval, rectangle, triangle, polygon, etc.; then the mesh holes of the wound receptor 1150 also have the shape of a circle, oval, rectangle, triangle, polygon, etc. For example Figure 8 FIG. shows a schematic view of a cylindrical receptor 1150b having rectangular mesh holes 1152b; and, the receptor 1150b is non-closed in the circumferential direction and has a side opening 1152b extending from a first end to a second end.

[0083] Figure 14 FIG. shows a schematic view of the mesh sheet 1150a of yet another embodiment; in this embodiment, the mesh holes 1152a are arranged only in a partial area of the mesh sheet 1150a, rather than completely arranged on the entire mesh sheet 1150a. For example, in Figure 14 the mesh sheet 1150a formed by punching a dense precursor has a dense area and a porous area, and the mesh holes 1152a are formed only in the porous area and avoid the dense area; for example, the mesh sheet 1150 includes a first dense area 1154a and a second dense area 1155a arranged opposite to each other, and a porous area 1156a located between the first dense area 1154a and the second dense area 1155a; wherein, the mesh holes 1152a are located in the porous area 1156a. Arranging the porous area 1156a only locally on the mesh sheet 1150a is beneficial for promoting winding. In Figure 14 FIG., the mesh holes 1152a are non-circular, for example in Figure 14 FIG. they are in an elliptical shape. Or in yet some embodiments, the mesh holes 1152a can also be non-circular shapes such as triangles, rhombuses, trapezoids or polygons. Or Figure 14 FIG., the extension dimension of the mesh holes 1152a in the length direction of the mesh sheet 1150a is greater than the extension dimension of the mesh holes 1152a in the width direction of the mesh sheet 1150a, which is beneficial for promoting winding the mesh sheet 1150a in the length direction.

[0084] Figure 9 FIG. shows an embodiment including Figure 2 a schematic view of an aerosol generation system of an aerosol generation article 1000, in Figure 9 FIG. shown, the aerosol generation system includes:

[0085] an aerosol generation article 1000;

[0086] a heating device 100 for receiving and heating the aerosol generation article 1000, so that the aerosol generation matrix 1130 in the aerosol generation article 1000 generates an aerosol for the user to inhale. According to Figure 9As shown, when the aerosol-generating article 1000 is received within the heating device 100, it is advantageous for the filter element 1110 of the aerosol-generating article 1000 to be exposed outside the heating device 100 for the user to draw on. Also, when the aerosol-generating substrate 1130 of the aerosol-generating article 1000 is consumed, the user can remove the aerosol-generating article 1000 from within the heating device 100 for replacement.

[0087] According to Figure 9 the embodiment shown, the heating device 100 is generally configured in an overall shape of a flat cylinder, and the heating device 100 is configured to include:

[0088] a housing 10, which has a hollow interior, thereby forming an assembly space for necessary functional components such as electronic devices; the housing 10 has a proximal end 110 and a distal end 120 that are opposite to each other in the longitudinal direction;

[0089] a receiving port 111, located at the proximal end 110; in use, the aerosol-generating article 1000 can be received at least partially within the housing 10 through the receiving port 111, or removed from within the housing 10 through the receiving port 111;

[0090] a bracket 20, at least partially surrounding or defining a chamber; the chamber is for receiving at least a portion of the aerosol-generating article 1000 that extends into the outer housing 10 through the receiving port 111;

[0091] an air passage 150, located between the chamber and the air inlet 121; thereby in use the air passage 150 provides a path for air to enter the chamber / aerosol-generating article 1000 from the air inlet 121, as Figure 9 shown by the arrow R11 in

[0092] In some alternative embodiments, the bracket 20 is tubular. Also, the bracket 20 is non-removable or fixed and immovable within the outer housing 10.

[0093] According to Figure 9 shown, the heating device 100 further includes:

[0094] a battery cell 130 for power supply;

[0095] a circuit board 140, arranged with circuits;

[0096] an induction coil 40, arranged around the bracket 20; the induction coil 40 is electrically connected to the circuit board 140, and thus can be provided with an alternating current by the circuit board 140 to generate a changing magnetic field so as to induce the receptor 1150 of the aerosol-generating article 1000 to form an eddy current for heating, thereby heating the aerosol-generating substrate 1130 to generate an aerosol.

[0097] According to Figure 9As shown, when the aerosol-generating article 1000 is received within the chamber and / or holder 20, the sensor 1150 is located within the induction coil 40. Also, when the aerosol-generating article 1000 is received within the chamber and / or holder 20, the sensor 1150 is inductively coupled to the induction coil 40. Thus, when the aerosol-generating article 1000 is received within the chamber and / or holder 20, the sensor 1150 can be induced by the magnetic field generated by the induction coil 40 to form eddy currents for heating, thereby heating the aerosol-generating substrate 1130.

[0098] For example Figure 12 A schematic diagram of the circuit arranged on the circuit board 140 of an embodiment is shown, in which the circuit arranged on the circuit board 140 includes:

[0099] Capacitor C1 and capacitor C2 in series, which are connected to the induction coil 40 to form an LC oscillator 222 with two symmetric bridge arms; specifically, in the connection manner, the first end of capacitor C1 is connected to the positive electrode of the battery cell 130, and the second end is connected to the first end of capacitor C2; the second end of capacitor C2 is connected to the negative electrode of the battery cell 130 through grounding; the second end of capacitor C1 and the first end of capacitor C2 are simultaneously connected to the second end of the induction coil 40;

[0100] Bridge 223, which is a half-bridge matching the symmetric LC oscillator 222; in Figure 12 it, the bridge 223, for example, the half-bridge includes a series-connected switching transistor Q1 and switching transistor Q2; in Figure 12 the connection, the first end of switching transistor Q1 is connected to the positive electrode of the battery cell 130, and the second end is connected to the first end of the induction coil 40; the first end of switching transistor Q2 is connected to the first end of the induction coil 40, and the second end is connected to the negative electrode of the battery cell 130 through grounding. Also, the conduction and disconnection of switching transistor Q1 and switching transistor Q2 are controlled by the PWM signal or PFM signal modulated by the MCU controller 224.

[0101] In use, the MCU controller 224 outputs the power of the battery cell 130 to the LC oscillator by controlling the conduction or disconnection of the switching transistors of the bridge 223, so that the LC oscillator generates oscillations to drive the induction coil 40 to generate a magnetic field, thereby inducing the sensor 40 to heat.

[0102] Or in some other common variant embodiments, the bridge 223 can also be a full bridge or H bridge including four switching transistors.

[0103] Or in some other variant embodiments, the LC oscillator 222 can also be an asymmetric half-bridge LC oscillator 222 formed by only a capacitor C2 in series with the induction coil 40, having only one oscillating bridge arm formed by the series connection of capacitor C2 and the induction coil 40.

[0104] In some embodiments, the MCU controller 224 controls the conduction or disconnection of the switching transistors Q1 and Q2 of the bridge 223 through at least one of PWM modulation and / or PFM modulation, so as to control the electric energy output from the battery cell 130 to the LC oscillator and / or the sensor 40. For example, in some specific embodiments, the MCU controller 224 controls the conduction or disconnection of the switching transistors Q1 and Q2 of the bridge 223 through PWM modulation and / or PFM modulation, so as to control the electric energy output from the battery cell 130 to the LC oscillator and / or the sensor 40 to remain at a predetermined energy value within a predetermined time. Or rather, the MCU controller 224 is configured to control the conduction or disconnection of the switching transistors Q1 and Q2 of the bridge 223 through PWM modulation and / or PFM modulation according to a predetermined energy curve, so as to control the battery cell 130 to provide or output energy.

[0105] In some embodiments, when the aerosol-generating article 1000 is received in the chamber and / or the holder 20, the circuit board 140 can drive the induction coil 40 to generate a magnetic field according to a heating curve at a predetermined time, so as to induce the sensor 1150 on the aerosol-generating article 1000 to be heated. Specifically, for example, the applicant provides various heating modes and content details of the aerosol-generating article 1000 according to a heating curve at a predetermined time in Chinese Patent Application CN112335940A, etc. The full text of the above-mentioned documents is incorporated herein by reference. In some embodiments, based on the heating mode according to a predetermined heating curve, the circuit on the circuit board 140 can determine the current temperature of the sensor 1150 according to the electric power or electric energy provided to the induction coil 40 from the start of heating to the current moment. Or in some other variant embodiments, the circuit on the circuit board 140 can determine the current temperature of the sensor 1150 based on electrical characteristics such as the resonant voltage, current or apparent ohmic resistance of the induction coil 40. For example, Chinese Patent Application CN106163306A, etc. provide various content details about determining the current temperature of the sensor 1150 according to electrical characteristics such as resonant voltage, current or apparent ohmic resistance. The full text of the above-mentioned documents is incorporated herein by reference.

[0106] For another example Figure 13 shows a schematic diagram of a predetermined heating curve for heating the aerosol-generating article 1000 in an embodiment; then in this embodiment, the MCU controller 224 controls the electric energy to the LC oscillator and / or the sensor 40 through PWM modulation and / or PFM modulation according to the Figure 13 shown heating curve, so as to control the heating of the sensor 1150, including:

[0107] S10, in the first time stage, i.e., the time stage from t0 to t1, the sensor 40 is heated from the initial temperature to the first target temperature T1;

[0108] S20. In the second time period, i.e., the time period from t1 to t2, keep the sensor 40 at the first target temperature T1;

[0109] S30. In the third time period, i.e., the time period from t2 to t3, raise the temperature of the sensor 40 from the first target temperature T1 to the second target temperature T2;

[0110] S40. In the fourth time period, i.e., the time period from t3 to t4, keep the sensor 40 at the second target temperature T2;

[0111] S50. In the fifth time period, i.e., the time period from t4 to t5, raise the temperature of the sensor 40 from the second target temperature T2 to the third target temperature T3;

[0112] S60. In the sixth time period, i.e., the time period from t5 to t6, keep the sensor 40 at the third target temperature T3;

[0113] S70. In the seventh time period, i.e., from t6 to t7, raise the temperature of the sensor 40 from the third target temperature T3 to the fourth target temperature T4;

[0114] S80. In the eighth time period, i.e., from t7 to the end, keep the sensor 40 at the fourth target temperature T4.

[0115] In some embodiments, when the MCU controller 224 controls the output of electrical energy to the LC oscillator and / or the sensor 40 through PWM modulation, keep the frequency f of the PWM signal constant and adjust the pulse width w to adjust the supplied electrical energy. For example, in the fourth time period, i.e., the time period from t3 to t4, relatively more electrical energy needs to be supplied to the sensor 40 than in the second time period, i.e., the time period from t1 to t2; then the pulse width w of the PWM signal issued by the MCU controller 224 in the fourth time period, i.e., the time period from t3 to t4, is greater than the pulse width w of the PWM signal issued by the MCU controller 224 in the second time period, i.e., the time period from t1 to t2; of course, their frequencies f are the same.

[0116] Or in some other embodiments, when the MCU controller 224 controls the output of electrical energy to the LC oscillator and / or the sensor 40 through PFM modulation, keep the pulse width w of the PFM signal constant and adjust the frequency f to adjust the supplied electrical energy. For example, in the fourth time period, i.e., the time period from t3 to t4, relatively more electrical energy needs to be supplied to the sensor 40 than in the second time period, i.e., the time period from t1 to t2; then the frequency f of the PFM signal issued by the MCU controller 224 in the fourth time period, i.e., the time period from t3 to t4, is less than the frequency f of the PFM signal issued by the MCU controller 224 in the second time period, i.e., the time period from t1 to t2; of course, their pulse widths w are the same.

[0117] According to Figure 13 As shown, in this embodiment, the heating process of the susceptor 40 for the aerosol-generating article 1000 includes multiple stepwise temperature increases. Alternatively, during the heating process of the susceptor 40 for the aerosol-generating article 1000, it includes multiple intermittent temperature increases. And during Figure 13 the heating process shown, during the heating process of the susceptor 40 for the aerosol-generating article 1000, there is no temperature decrease process; or the heating temperature of the susceptor 40 has no decreasing process; the heating temperature of the susceptor 40 only has the processes of temperature increase and heat preservation.

[0118] Or Figure 10 shows a schematic diagram of an aerosol-generating article 1000c having a wound susceptor 1150c in another embodiment. In this embodiment, the wound susceptor 1150c does not completely surround and wrap the aerosol-generating substrate 1130c. In Figure 10 the shown, the wound susceptor 1150c in a cylindrical shape substantially has the same length as the aerosol-generating substrate 1130c. In Figure 10 the shown, the diameter of the wound susceptor 1150c in a cylindrical shape or the diameter of the circumscribed circle is between 40% and 90% of the diameter of the aerosol-generating substrate 1130c.

[0119] In Figure 10 the shown embodiment, the aerosol-generating substrate 1130c includes a first part 1131c located inside the susceptor 1150c and a second part 1132c located outside the susceptor 1150c. In this embodiment, the diameter of the cylindrical susceptor 1150c or the diameter of the circumscribed circle is between 3.5 and 6.5 mm.

[0120] Or in some other variant embodiments, there is no aerosol-generating substrate 1130c inside the wound susceptor 1150c in a cylindrical shape; that is, the aerosol-generating substrate 1130c only has the second part 1132c located outside the susceptor 1150c. Then in this embodiment, the diameter of the susceptor 1150c or the diameter of the circumscribed circle is greater than 50% of the diameter of the aerosol-generating article 1000c and less than 90% of the diameter of the aerosol-generating article 1000c, which is beneficial for sufficiently heating both the first part 1131c and the second part 1132c simultaneously. For example, in some specific embodiments, when the diameter of the aerosol-generating article 1000c is 7.2 mm, then the diameter of the susceptor 1150c or the diameter of the circumscribed circle is 4 to 6 mm.

[0121] Or Figure 11 shows a schematic diagram of an aerosol-generating system including a heating device 100d in another embodiment; in this embodiment, the heating device 100d includes:

[0122] A housing 10d, having a proximal end 110d and a distal end 120d that are opposite in the longitudinal direction;

[0123] A receiving port 111d, located at the proximal end 110d; in use, the aerosol-generating article 1000d can be at least partially received into the housing 10d through the receiving port 111d, or removed from the housing 10d through the receiving port 111d;

[0124] A substantially tubular bracket 20d, at least partially surrounding or defining a chamber; the chamber is for receiving at least a portion of the aerosol-generating article 1000d extending into the outer housing 10d through the receiving port 111d;

[0125] An air passage 150d, located between the chamber and the air inlet 121d; further, in use, the air passage 150d provides a passage path for air to enter the chamber / aerosol-generating article 1000d from the air inlet 121d;

[0126] A battery cell 130d for power supply;

[0127] A circuit board 140d, arranged with a circuit;

[0128] A sensor 30d, located within the bracket 20d and at least partially surrounding or defining the chamber; when the aerosol-generating article 1000d is received in the chamber, at least a portion of the aerosol-generating matrix 1130d is at least partially received or contained within the sensor 30d and heated from the outside by the sensor 30d;

[0129] An induction coil 40d, arranged around the sensor 30d; the induction coil 40d is electrically connected to the circuit board 140d, and further, an alternating current can be provided by the circuit board 140d to generate a changing magnetic field to induce the sensor 30d to form eddy current heating.

[0130] In an embodiment, the sensor 30d is a cylindrical shape wound by a planar mesh substrate, so that when the aerosol-generating article 1000d is received in the chamber, the sensor 30d surrounds or encloses at least a portion of the aerosol-generating matrix 1130d.

[0131] Or in some other variant embodiments, the sensor 30d is arranged as a cylindrical shape extending longitudinally along the chamber; when the aerosol-generating article 1000d is received in the chamber, the sensor 30d can extend or insert into the aerosol-generating matrix 1130d for heating.

[0132] It should be noted that the description and drawings of the present application give preferred embodiments of the present application, but are not limited to the embodiments described in this specification. Further, for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present application.

Claims

1. An aerosol-generating article, characterized in that, Comprising: An aerosol - generating substrate configured to generate an aerosol when heated; A susceptor capable of generating eddy currents in a changing magnetic field to generate heat and thereby heat the aerosol - generating substrate; The susceptor is configured as a cylindrical shape wound by a mesh sheet, and the mesh sheet is formed by perforating a dense precursor.

2. The aerosol-generating article according to claim 1, characterized in that, The mesh sheet is formed by mechanically perforating, laser - perforating or chemically etching a dense precursor to form pores.

3. The aerosol-generating article according to claim 1 or 2, characterized in that, The susceptor is non - closed in the circumferential direction; And / or, side openings extending through the susceptor in the longitudinal direction are arranged on the susceptor; And / or, the susceptor is arranged around the aerosol - generating substrate; And / or, part of the aerosol - generating substrate is located inside the susceptor and part is located outside the susceptor.

4. The aerosol-generating article according to claim 1 or 2, characterized in that, The ratio of the area of the pores of the susceptor to the total area of the susceptor is between 30% and 70%.

5. The aerosol-generating article according to claim 1 or 2, characterized in that, The pore diameter or width of the pores of the susceptor is between 20 microns and 2000 microns.

6. The aerosol-generating article according to claim 1 or 2, characterized in that, ； The susceptor has a plurality of pores to make the susceptor fluid - permeable.

7. The aerosol-generating article according to claim 1 or 2, characterized in that, The mesh sheet only includes a single layer of sensitive material.

8. The aerosol-generating article according to claim 1 or 2, characterized in that, The susceptor comprises 40 wt% - 99.9 wt% of iron; Alternatively, the susceptor comprises a permalloy with an alloy grade of 1J50 or 1J85; Alternatively, the mass percentage of iron in the susceptor is between 15 wt% and 85 wt%, and the mass percentage of nickel does not exceed 85 wt%; Alternatively, the susceptor comprises iron and a metal protective layer coated, sprayed or deposited on the surface of the iron; Alternatively, the susceptor 1150 comprises 430 stainless steel with a chromium content of 16 wt% - 18 wt%.

9. An aerosol-generating system, characterized in that, Comprising: An aerosol - generating article according to any one of claims 1 to 8; A heating device comprising: A chamber for removably receiving the aerosol - generating article; An induction coil arranged around the chamber for generating a changing magnetic field; when the aerosol - generating article is received in the chamber, the induction coil is inductively coupled with the susceptor of the aerosol - generating article to induce the susceptor to form eddy currents and generate heat through the changing magnetic field.

10. The aerosol-generating system according to claim 9, characterized in that, Further comprising: A capacitor, which forms an LC oscillator with the induction coil; the LC oscillator is configured to guide a changing current to flow through the induction coil to generate a changing magnetic field, and further drive the induction coil to supply energy to the susceptor to heat the aerosol - generating substrate by the susceptor; A controller configured to control the oscillation of the LC oscillator to form a current flowing through the induction coil, and further control the energy supplied to the susceptor so that the susceptor heats the aerosol - generating substrate according to a predetermined heating curve.

11. The aerosol-generating system according to claim 10, characterized in that, The predetermined heating curve includes a plurality of step - wise temperature increases.

12. A heating device configured to heat an aerosol-generating article comprising an aerosol-generating substrate to generate an aerosol; characterized in that, Comprising: A chamber for receiving the aerosol - generating article; A susceptor located inside the chamber or arranged around the chamber, capable of generating eddy currents in a changing magnetic field to generate heat and thereby heating the aerosol - generating substrate of the aerosol - generating article; The susceptor is configured as a cylindrical shape wound by a mesh sheet, and the mesh sheet is formed by perforating a dense precursor; An induction coil for generating a changing magnetic field.

13. A sensor for an aerosol-generating system, for heating an aerosol-generating substrate of an aerosol-generating article; characterized in that, The receptor is configured as a cylinder wound by a reticular sheet formed by punching holes in a dense precursor.

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