Heating structure, aerosol generating device, and aerosol generating system

Abstract

A heating structure (100), an aerosol generating device, and an aerosol generating system. The aerosol generating system comprises a receptor (231). The aerosol generating device comprises the heating structure (100). The heating structure (100) comprises a first magnetically conductive member (111), a second magnetically conductive member (112), and a coil (120), wherein the second magnetically conductive member (112) is vertically arranged on a first side of the first magnetically conductive member (111) in a first direction; the coil (120) is spirally wound around the periphery of the second magnetically conductive member (112) in the first direction and is supported on the first magnetically conductive member (111); the coil (120) is used for inputting of an alternating current to generate a varying magnetic field; the receptor (231) is arranged on the side of the second magnetically conductive member (112) away from the first magnetically conductive member (111) and is spaced apart from the second magnetically conductive member (112). The direction of the magnetic field generated by the coil (120) can vary, and the requirement for rapid vaping can be satisfied.

Description

Heating structure, aerosol generating device and aerosol generating system

[0001] This application claims priority to the Chinese Patent Application No. 202410471606.7, filed on April 18, 2024, entitled "A Heating Structure, Aerosol Generating Device and Aerosol Generating System"; the Chinese Patent Application No. 202410471613.7, filed on April 18, 2024, entitled "An Aerosol Generating System"; the Chinese Patent Application No. 202410471621.1, filed on April 18, 2024, entitled "A Heating Structure, Aerosol Generating Device and Aerosol Generating System"; the Chinese Patent Application No. 202410471634.9, filed on April 18, 2024, entitled "A Heating Structure, Aerosol Generating Device and Aerosol Generating System", all of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of aerosol generation, in particular to a heating structure, an aerosol generating device and an aerosol generating system. BACKGROUND

[0003] The statements herein are provided only to complement the background information of the present application and are not necessarily prior art. With the development and popularization of heat-not-burn technology in the field of aerosol production technology, the application of aerosol generating devices is becoming more and more widespread. The aerosol generating substrate is heated by a heating structure, so that the aerosol generating substrate generates aerosol without being burned. The heating form of the heating structure is various, for example, it can be resistance heating, electromagnetic heating, etc. Generally, the electromagnetic heating structure mainly includes a magnetic field generator and a susceptor. The magnetic field generator is composed of a ring-shaped solenoid coil and a magnetic field shielding layer arranged outside the coil. The susceptor is arranged at the center of the magnetic field generator. The susceptor is composed of a ring-shaped tube, a center needle or a center sheet of a magnetic conductive material with certain magnetic conductive properties. The susceptor is arranged in the middle of the ring-shaped solenoid coil. Under the action of the changing magnetic field generated by the magnetic field generator, the susceptor generates heat and transfers it to the aerosol generating substrate. The aerosol generating substrate generates aerosol after being heated, which is then carried out by the airflow generated during suction.

[0004] However, in the above-mentioned electromagnetic heating scheme, the volume of the susceptor is large, which requires a large amount of energy for heating. At low power, it cannot meet the requirement of fast smoke generation, and cannot achieve the effect of instant smoking and instant stopping. In addition, the volume of the ring-shaped solenoid coil is large, and the magnetic field is dispersed, which cannot meet the requirement of fast smoke generation. TECHNICAL PROBLEM

[0005] One of the purposes of the embodiments of the present application is to provide a heating structure, an aerosol generating device and an aerosol generating system. Technical solutions

[0006] The technical solutions adopted by the embodiments of the present application are as follows:

[0007] In a first aspect, a heating structure is provided for generating a varying magnetic field to couple with a susceptor to heat an aerosol generating substrate, the heating structure comprising a first magnetic conductor, a second magnetic conductor and a coil, the second magnetic conductor being arranged perpendicularly to a first side of the first magnetic conductor in a first direction, the coil being helically wound around a periphery of the second magnetic conductor in the first direction and supported on the first magnetic conductor, the coil being configured to be connected to an alternating current to generate a varying magnetic field.

[0008] In some embodiments, the winding directions of two adjacent groups of the coils are the same.

[0009] Alternatively, the winding directions of two adjacent groups of the coils are opposite.

[0010] In some embodiments, the second magnetic conductor has a cross-sectional shape of a rectangle, a circle, an ellipse or a racetrack.

[0011] In some embodiments, the coil is wound in multiple turns, each turn being sequentially sleeved outside the second magnetic conductor from inside to outside.

[0012] In a second aspect, an aerosol generating device is provided, comprising a power supply assembly and the heating structure described above, the power supply assembly being electrically connected to the heating structure.

[0013] In a third aspect, an aerosol generating system is provided, comprising a susceptor and the aerosol generating device described above, the aerosol generating device comprising a heating structure, the heating structure comprising a first magnetic conductor and a second magnetic conductor, the susceptor being arranged on a side of the second magnetic conductor facing away from the first magnetic conductor and being spaced apart from the second magnetic conductor.

[0014] In some embodiments, a projection of the second magnetic conductor on a plane of the susceptor facing the second magnetic conductor is within the plane.

[0015] In some embodiments, the susceptor has a thickness ranging from 0.005mm to 0.2mm.

[0016] In some embodiments, a distance between the susceptor and the second magnetic conductor ranges from 0.5mm to 5mm.

[0017] In some embodiments, the aerosol generating system further comprises a driving structure, a conveying assembly and a medium tape, an output end of the driving structure is connected with an input end of the conveying assembly, the conveying assembly is used for conveying the medium tape, and the susceptor is a part used for coupling with a magnetic field in a medium section of the medium tape opposite to the second magnetic conducting piece.

[0018] In some embodiments, the aerosol generating system further comprises a replaceable medium assembly, the replaceable medium assembly comprises a mounting box, the conveying assembly mounted in the mounting box and the medium tape wound on the conveying assembly.

[0019] In the fourth aspect, a heating structure is provided for generating a changing magnetic field to couple with a susceptor to heat an aerosol generating substrate, the heating structure comprises:

[0020] A fourth magnetic conducting piece, the fourth magnetic conducting piece has two magnetic ends, the fourth magnetic conducting piece extends from one of the magnetic ends to the other magnetic end and passes through at least two bends in between, and an opening is formed between the two magnetic ends;

[0021] A coil, the coil is wound outside the fourth magnetic conducting piece along the extension direction of the fourth magnetic conducting piece, and the coil is used for connecting an alternating current to generate a changing magnetic field.

[0022] In some embodiments, the second magnetic conducting section extends along a straight line or extends along a curve.

[0023] In some embodiments, the first magnetic conducting section and / or the first magnetic conducting part and / or the second magnetic conducting part are sleeved with the coil.

[0024] In the fifth aspect, an aerosol generating device is provided, comprising a power supply assembly and the heating structure provided in the fourth aspect, and the power supply assembly is electrically connected with the heating structure.

[0025] In the sixth aspect, an aerosol generating system is provided, comprising a susceptor and the aerosol generating device provided in the fifth aspect, and the aerosol generating device comprises a heating structure, the heating structure comprises a magnetic conducting piece, the magnetic conducting piece forms an opening, the susceptor is arranged through the opening, or the susceptor is arranged outside the magnetic conducting piece and parallel to the opening.

[0026] In some embodiments, the susceptor is in a sheet shape or a tube shape.

[0027] In some embodiments, a first distance H1 between the susceptor and the magnetic end of the magnetic conducting piece ranges from 0.5 mm to 10 mm. Advantages

[0028] The heating structure, the aerosol generating device and the aerosol generating system provided by the embodiments of the present application have the beneficial effects that the direction of the magnetic field generated by the coil is changed, the magnetic induction intensity generated by the coil is improved, the coupling efficiency of the susceptor and the magnetic field and the magnetic heat conversion efficiency are improved, the requirement of fast smoke generation can be met, the processing procedure of the heating structure is simple, the production efficiency is high, and the cost of the heating structure can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0030] Fig. 1 is a perspective structural schematic view of a first aerosol generating system provided by the embodiments of the present application;

[0031] Fig. 2 is a longitudinal sectional structural schematic view of an aerosol generating system provided by the embodiments of the present application;

[0032] Fig. 3 is a perspective structural schematic view of a replaceable medium assembly in an aerosol generating system provided by the embodiments of the present application;

[0033] Fig. 4 is an internal structural schematic view of the replaceable medium assembly in the aerosol generating system provided by the embodiments of the present application;

[0034] Fig. 5 is a side view of a heating structure in the aerosol generating system provided by the embodiments of the present application, which is perpendicular to a third direction;

[0035] Fig. 6 is a side view of the heating structure in the aerosol generating system provided by the embodiments of the present application, which is perpendicular to a second direction;

[0036] Fig. 7 is a side view of a magnetic conductive seat in the aerosol generating system provided by the embodiments of the present application, which is perpendicular to a third direction;

[0037] Fig. 8 is a side view of the magnetic conductive seat in the aerosol generating system provided by the first embodiment of the present application, which is perpendicular to a first direction;

[0038] Fig. 9 is a side view of the magnetic conductive seat in the aerosol generating system provided by the second embodiment of the present application, which is perpendicular to the first direction;

[0039] Fig. 10 is a side view of the magnetic conductive seat in the aerosol generating system provided by the third embodiment of the present application, which is perpendicular to the first direction;

[0040] Fig. 11 is a side view of the magnetic conductive seat in the aerosol generating system provided by the fourth embodiment of the present application, which is perpendicular to the first direction;

[0041] Fig. 12 is a side view of the magnetic guide seat of the aerosol generating system according to the fifth embodiment of the present application, viewed in a direction perpendicular to the first direction;

[0042] Fig. 13 is a side view of the heating structure of the aerosol generating system according to the sixth embodiment of the present application, viewed in a direction perpendicular to the first direction;

[0043] Fig. 14 is a side view of the heating structure of the aerosol generating system according to the seventh embodiment of the present application, viewed in a direction perpendicular to the first direction;

[0044] Fig. 15 is a side view of the magnetic guide seat of the aerosol generating system according to the seventh embodiment of the present application, viewed in a direction perpendicular to the second direction;

[0045] Fig. 16 is a side view of the magnetic guide seat of the aerosol generating system according to the seventh embodiment of the present application, viewed in a direction perpendicular to the first direction;

[0046] Fig. 17 is a side view of the magnetic guide seat of the aerosol generating system according to the eighth embodiment of the present application, viewed in a direction perpendicular to the first direction;

[0047] Fig. 18 is a side view of the magnetic guide seat of the aerosol generating system according to the ninth embodiment of the present application, viewed in a direction perpendicular to the first direction;

[0048] Fig. 19 is a schematic view of the heating structure of the second aerosol generating system according to the embodiments of the present application;

[0049] Fig. 20 is a side view of the heating structure of the aerosol generating system according to the embodiments of the present application, viewed in a direction perpendicular to the third direction;

[0050] Fig. 21 is a side view of the heating structure of the aerosol generating system according to the embodiments of the present application, viewed in a direction perpendicular to the second direction;

[0051] Fig. 22 is a schematic view of the heating structure of the aerosol generating system according to the embodiments of the present application;

[0052] Fig. 23 is a side view of the heating structure of the aerosol generating system according to the embodiments of the present application, viewed in a direction perpendicular to the third direction;

[0053] Fig. 24 is a schematic view of the magnetic guide seat of the heating structure of the aerosol generating system according to the embodiments of the present application;

[0054] Fig. 25 is a schematic view of the magnetic field distribution of the heating structure of the aerosol generating system according to the embodiments of the present application;

[0055] Fig. 26 is a schematic view of the heating structure of the aerosol generating system according to another embodiment of the present application;

[0056] Fig. 27 is a side view of the heating structure of Fig. 26 taken perpendicular to the third direction;

[0057] Fig. 28 is a side view of the heating structure of Fig. 26 taken perpendicular to the first direction;

[0058] Fig. 29 is a side view of the magnetic conductive seat of the heating structure of Fig. 26 taken perpendicular to the first direction;

[0059] Fig. 30 is a perspective view of a heating structure of an aerosol generating system according to another embodiment of the present application;

[0060] Fig. 31 is a perspective view of a heating structure of the heating structure of Fig. 30;

[0061] Fig. 32 is a perspective view of a heating structure of an aerosol generating system according to another embodiment of the present application;

[0062] Fig. 33 is a side view of the heating structure of Fig. 32 taken perpendicular to the first direction;

[0063] Fig. 34 is a perspective view of a magnetic conductive seat of the heating structure of Fig. 32;

[0064] Fig. 35 is a side view of the magnetic conductive seat of Fig. 34 taken perpendicular to the first direction;

[0065] Fig. 36 is a perspective view of a heating structure of a third aerosol generating system according to an embodiment of the present application;

[0066] Fig. 37 is an exploded view of a heating structure of an aerosol generating system according to an embodiment of the present application;

[0067] Fig. 38 is a magnetic field distribution diagram of the heating structure of an aerosol generating system according to an embodiment of the present application;

[0068] Fig. 39 is a perspective view of a susceptor of an aerosol generating system according to an embodiment of the present application;

[0069] Fig. 40 is a perspective view of a susceptor of an aerosol generating system according to another embodiment of the present application;

[0070] Fig. 41 is a perspective view of a susceptor of an aerosol generating system according to another embodiment of the present application;

[0071] Fig. 42 is an assembly view of a heating structure and a susceptor of a fourth aerosol generating system according to an embodiment of the present application;

[0072] Fig. 43 is a magnetic field distribution diagram of a heating structure according to an embodiment of the present application;

[0073] Fig. 44 is a magnetic field distribution diagram of a heating structure according to another embodiment of the present application;

[0074] Fig. 45 is a structural schematic diagram of a heating structure according to an embodiment of the present application;

[0075] Fig. 46 is a structural schematic diagram of a heating structure according to another embodiment of the present application;

[0076] Fig. 47 is a structural schematic diagram of a heating structure according to an embodiment of the present application, in which a coil is sleeved on a first magnetic conducting segment;

[0077] Fig. 48 is a structural schematic diagram of a heating structure according to an embodiment of the present application, in which a coil is sleeved on two second magnetic conducting segments;

[0078] Fig. 49 is a structural schematic diagram of a heating structure according to another embodiment of the present application, in which a coil is sleeved on a first magnetic conducting segment;

[0079] Fig. 50 is a structural schematic diagram of a heating structure according to another embodiment of the present application, in which a coil is sleeved on two first magnetic conducting segments;

[0080] Fig. 51 is a structural schematic diagram of a heating structure according to another embodiment of the present application, in which a coil is sleeved on two second magnetic conducting segments;

[0081] Fig. 52 is a first structural schematic diagram of a medium in an aerosol generating system according to an embodiment of the present application;

[0082] Fig. 53 is a second structural schematic diagram of a medium in an aerosol generating system according to an embodiment of the present application;

[0083] Fig. 54 is a third structural schematic diagram of a medium in an aerosol generating system according to an embodiment of the present application.

[0084] In the drawings, reference numerals: 100, heating structure; 110, magnetic conducting base; 111, first magnetic conducting member; 112, second magnetic conducting member; 113, third magnetic conducting member; 120, coil; 130, fourth magnetic conducting member; 131, first magnetic conducting segment; 132, second magnetic conducting segment; 1321, first magnetic conducting part; 1322, second magnetic conducting part; 133, opening; 134, magnetic end; 200, replaceable medium assembly; 210, mounting box; 211, accommodating groove; 212, support table; 213, partition plate; 214, first cavity; 215, second cavity; 216, air guiding opening; 220, conveying assembly; 221, first roller; 222, second roller; 223, guide wheel; 224, torsional spring; 225, clamping structure; 230, medium strip; 231, susceptor; 2311, channel; 232, aerosol generating substrate; 300, driving structure; 2, power supply assembly; 21, battery; 22, circuit structure; 3, shell; 4, suction nozzle; X, first direction; Y, second direction; Z, third direction. Embodiments of the present application

[0085] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0086] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first", "second" are only for the purpose of convenient description, and cannot be understood as indicating or implying relative importance or implying the number of technical features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0087] As described in the background, generally, the electromagnetic heating structure mainly includes a magnetic field generator and a susceptor, the magnetic field generator is composed of a ring-shaped solenoid coil and a magnetic field shielding layer disposed outside the coil, the susceptor is disposed at the center of the magnetic field generator, the susceptor is composed of a ring-shaped tubular, a center needle type, a center sheet type, etc. with certain magnetic conductive properties, the susceptor is disposed in the middle of the ring-shaped solenoid coil, under the action of the changing magnetic field generated by the magnetic field generator, the susceptor generates heat and transfers it to the aerosol generating substrate, the aerosol generating substrate generates aerosol after being heated, and then the generated airflow is taken out when being smoked.

[0088] However, in the above electromagnetic heating scheme, since the susceptor is disposed at the center of the magnetic field generator, in order to accommodate the susceptor and the aerosol generating substrate, the volume of the ring-shaped solenoid coil is relatively large, the magnetic field is relatively dispersed, and the requirement of fast smoking cannot be met. At the same time, in order to be able to quickly heat the aerosol generating substrate, the volume of the susceptor will also be set to be relatively large, resulting in that the energy required for the susceptor to heat up is relatively large, and the requirement of fast smoking cannot be met at low power, the effect of smoking as soon as possible and stopping as soon as possible cannot be achieved, and the smoking experience of the smoker is affected.

[0089] To solve the above problems, the application provides a heating structure 100, an aerosol generating device and an aerosol generating system. The common action of the first magnetic guide 111 and the second magnetic guide 112 guides the changing magnetic field generated by the coil 120, changes the direction of the magnetic field generated by the coil 120, increases the magnetic induction intensity generated by the coil 120, improves the coupling efficiency and the magnetic heat conversion efficiency of the susceptor 231 and the magnetic field, meets the requirement of rapid smoke generation, and the heating structure 100 has simple processing procedures, high production efficiency, and low cost.

[0090] Please refer to FIG. 1 and FIG. 2, the aerosol generating system provided by the application is described. The aerosol generating system includes an aerosol generating device and an aerosol generating substrate 232. The aerosol generating device is used to generate an aerosol in a heated and unburned state after being powered on.

[0091] Please refer to FIG. 1 and FIG. 2, the aerosol generating device provided by the application is described. The aerosol generating device includes a power supply assembly 2 and a heating structure 100. The power supply assembly 2 is electrically connected with the heating structure 100. The power supply assembly 2 is used to supply power to the heating structure 100. The heating structure 100 is used to generate an aerosol in a heated and unburned state after being powered on.

[0092] In one embodiment, the power supply assembly 2 includes a battery 21 and a circuit structure 22. The battery 21 is electrically connected with the circuit structure 22. The circuit structure 22 is electrically connected with the heating structure 100. The circuit structure 22 is used to provide power to the heating structure 100 according to the heating requirement.

[0093] In one embodiment, please refer to FIG. 5 and FIG. 6, the aerosol generating system includes a susceptor 231. The heating structure 100 is arranged apart from the susceptor 231. The heating structure 100 is electrically connected with the power supply assembly 2. The heating structure 100 generates a changing magnetic field after being powered on to couple with the susceptor 231 to heat and unburn the aerosol generating substrate 232 to generate an aerosol.

[0094] In the application, the heating structure 100 has various structural forms. In order to facilitate the description, the application divides the heating structure 100 into four cases, and describes the heating structure 100 and the corresponding susceptor 231 in the four cases in detail.

[0095] The first case:

[0096] Referring to FIG. 5 and FIG. 6, a first heating structure 100 provided by the embodiment of the present application will be described. The first heating structure 100 comprises a magnetic conductive base 110 and a coil 120. The magnetic conductive base 110 comprises a first magnetic conductive member 111 and a second magnetic conductive member 112. The second magnetic conductive member 112 is vertically arranged on the first side of the first magnetic conductive member 111 along a first direction X. The coil 120 is spirally wound around the periphery of the second magnetic conductive member 112 along the first direction X and supported on the first magnetic conductive member 111. The coil 120 is used for connecting alternating current to generate a changing magnetic field. In the state that the heating structure 100 is installed on the power supply assembly 2, the coil 120 is connected with the power supply assembly 2.

[0097] For example, in FIG. 5 and FIG. 6, the first direction X is set as the height direction of the heating structure 100, the second direction Y is set as the width direction of the heating structure 100, and the third direction Z is set as the length direction of the heating structure 100. In the state that the heating structure 100 and the power supply assembly 2 are assembled, the susceptor 231 is arranged above the second magnetic conductive member 112. The length extension direction of the susceptor 231 is parallel to the third direction Z, and the width extension direction of the susceptor 231 is parallel to the second direction Y.

[0098] In the embodiment, for the convenience of description, hereinafter, the first direction X is set as the height direction. The top, top end or top side refers to the part, end or side of a member facing the susceptor 231 along the first direction X. The bottom, bottom end or bottom side refers to the part, end or side of a member away from the susceptor 231 along the first direction X. Of course, in actual application, according to the different placement range of the aerosol generating system, the first direction X can be the front-back direction or the left-right direction.

[0099] The coil 120 is electrically connected with the power supply assembly 2. The power supply assembly 2 is used for providing alternating current for the coil 120, so that the coil 120 can generate an alternating magnetic field after being powered on.

[0100] The first magnetic conductive member 111 and the second magnetic conductive member 112 are both made of magnetic conductive material and have magnetic conductive effect and the effect of strengthening the magnetic field strength. Specifically, when the first magnetic conductive member 111, the second magnetic conductive member 112 and the coil 120 are assembled, the magnetic field generated by the heating structure 100 is distributed as shown in FIG. 5. As can be seen from the magnetic field distribution diagram, the magnetic induction lines emitted from the top end of the second magnetic conductive member 112 can be introduced from the edge of the first magnetic conductive member 111 and returned to the second magnetic conductive member 112 through the first magnetic conductive member 111, forming a loop. That is, the setting of the first magnetic conductive member 111 makes the magnetic induction lines relatively more diffused outside the second magnetic conductive member 112, so that the susceptor 231 arranged above the second magnetic conductive member 112 can be cut, and eddy current is generated at the edge of the susceptor 231, so that the aerosol generating substrate 232 can be heated.

[0101] The heating structure 100 in the embodiment of the present application sets the second magnetic conducting piece 112 at the center of the coil 120, sets the first magnetic conducting piece 111 at one side of the second magnetic conducting piece 112, and guides the changing magnetic field generated by the coil 120 through the joint action of the first magnetic conducting piece 111 and the second magnetic conducting piece 112, changes the direction of the magnetic field generated by the coil 120, improves the magnetic induction intensity generated by the coil 120, improves the coupling efficiency and the magnetic heat conversion efficiency of the susceptor 231 and the magnetic field, can meet the requirement of fast smoking, and has simple processing procedure, high production efficiency, and low cost.

[0102] Meanwhile, since the susceptor 231 and the aerosol generating substrate 232 are not set at the center of the coil 120, the cross-sectional area of the coil 120 can be reduced, the magnetic field can be concentrated, and the smoking speed is improved. Meanwhile, since the susceptor 231 can be set at one side of the coil 120 and the cross-sectional area of the coil 120 is reduced, the cross-sectional area of the susceptor 231 can also be appropriately reduced, so that the susceptor 231 does not need large energy when being heated, and can meet the requirement of fast smoking at low power, achieves the effect of smoking and stopping immediately, and improves the user's smoking experience.

[0103] In one embodiment, referring to FIGS. 8-10, the second magnetic conducting piece 112 is set at the center of the first magnetic conducting piece 111 along the second direction Y, so that the changing magnetic field generated by the heating structure 100 is symmetrically arranged along the second direction Y, so that the heating speed and the heating effect of the susceptor 231 along the second direction Y are symmetrically uniform.

[0104] In one embodiment, referring to FIGS. 8-10, the length of the second magnetic conducting piece 112 along the second direction Y is less than the length of the first magnetic conducting piece 111 along the second direction Y, which can ensure that the magnetic induction lines emitted from the second magnetic conducting piece 112 can be effectively cut by the susceptor 231, increase the effective coupling area of the coil 120 and the internal area of the susceptor 231, and improve the coupling efficiency.

[0105] In one embodiment, referring to FIGS. 8-10, the length of the second magnetic conducting piece 112 along the third direction Z is less than or equal to the length of the first magnetic conducting piece 111 along the third direction Z, that is, when the second magnetic conducting piece 112 is projected to the first side of the first magnetic conducting piece 111 along the first direction X, the projection of the second magnetic conducting piece 112 is inside the first side, so that when the second magnetic conducting piece 112 guides the changing magnetic field generated by the coil 120 outward, the changing magnetic field can be introduced into the first magnetic conducting piece 111 through the periphery of the first magnetic conducting piece 111, thereby increasing the length range of the magnetic field acting on the susceptor 231 along the third direction Z, so that the susceptor 231 is heated more uniformly and at a faster speed.

[0106] In the present application, the number of the second magnetic conductive members 112 can be one, two or more, according to different heating requirements of the heating structure 100, which will be illustrated in the following examples.

[0107] In one embodiment, referring to FIGS. 7-12, the number of the second magnetic conductive members 112 is one, and the second magnetic conductive member 112 is arranged at the center of the first magnetic conductive member 111 along the second direction Y. In this way, the varying magnetic field generated by the heating structure 100 is symmetrically arranged along the second direction Y of the first magnetic conductive member 111, so that the heating speed of the susceptor 231 along the second direction Y is symmetrically uniform. In addition, no other magnetic conductive structure is arranged around the second magnetic conductive member 112, so as to ensure a sufficient winding space for the coil 120, and the winding process of the coil 120 is simpler. The number of turns of the coil 120 can be further increased to increase the magnetic induction intensity, and a coil 120 with a larger cross-sectional area is arranged to reduce the loss and temperature of the coil 120 itself and improve the reliability of the product.

[0108] In this embodiment, the cross-sectional area of the second magnetic conductive member 112 can be rectangular, circular, elliptical or track-shaped, or a combination of two of the above shapes. For example, FIGS. 8 and 9 are track-shaped, FIG. 10 is rectangular, FIG. 11 is circular, and FIG. 12 is elliptical.

[0109] In another embodiment of the present application, referring to FIG. 13, the number of the second magnetic conductive members 112 is two or more, and each second magnetic conductive member 112 is arranged at the side of the first magnetic conductive member 111 facing the susceptor 231. Specifically, each second magnetic conductive member 112 is arranged at the middle of the first magnetic conductive member 111 along the second direction Y, and each second magnetic conductive member 112 is arranged at intervals along the third direction Z.

[0110] Corresponding to the increase in the number of the second magnetic conductive members 112, the winding method of the coil 120 can also have many.

[0111] In this embodiment, when winding the coil 120, a single set of coils 120 is spirally wound around the periphery of each of the second magnetic conductive members 112, that is, each of the second magnetic conductive members 112 is regarded as a magnetic whole, and then the coil 120 is wound around the periphery of the magnetic whole. Compared with the arrangement of a single second magnetic conductive member 112, this is equivalent to breaking the heating area acting on the susceptor 231, which is beneficial to increasing the heating area, and at the same time, can make the heating of the susceptor 231 uniform.

[0112] In another embodiment of the present application, referring to FIG. 14 and FIG. 15, the number of the second magnetic conductive members 112 is two or more, and the number of the coils 120 is also two or more, and the number of the coils 120 is the same as the number of the second magnetic conductive members 112, each of the second magnetic conductive members 112 is wound with a group of the coils 120, and the adjacent two groups of the coils 120 are connected in series or in parallel.

[0113] Specifically, the winding directions of the adjacent two groups of the coils 120 can be the same or opposite. When the winding directions of the adjacent two groups of the coils 120 are the same, the current directions of the two groups of the coils 120 are also the same, the magnetic field generated thereby repels each other and weakens at the near end (the end where the two groups of the coils 120 are connected to each other), and strengthens at the far end (the end where the two groups of the coils 120 are away from each other), which is beneficial to improve the heating length of the susceptor 231.

[0114] When the winding directions of the adjacent two groups of the coils 120 are opposite, the current directions of the two groups of the coils 120 are also opposite, the magnetic field generated thereby strengthens in the same direction at the near end, and there is a heating zone in the middle, which is beneficial to improve the heating uniformity of the susceptor within the range of the coils 120.

[0115] In the embodiment of the at least two second magnetic conductive members 112, the cross-sectional shape of the second magnetic conductive member 112 can be rectangular, circular, elliptical or track-shaped, or can also be a combination of the above two shapes. For example, FIG. 16 is circular, FIG. 17 is elliptical, and FIG. 18 is rectangular.

[0116] In one embodiment, referring to FIG. 6, along the first direction X, the height of the coil 120 is not higher than the height of the second magnetic conductive member 112, so that the magnetic field generated by the coil 120 can pass through the second magnetic conductive member 112 as much as possible, thereby improving the utilization rate of the magnetic field.

[0117] In one embodiment, referring to FIG. 12 and FIG. 13, the coil 120 can be single-turn or multi-turn, and when the coil 120 is multi-turn, each turn is wound outside the second magnetic conductive member 112 from inside to outside. By increasing the number of turns of the coil 120, the magnetic induction intensity thereof is increased, and by arranging the coil 120 with a larger cross-sectional area, the loss and temperature of the coil 120 itself are reduced, and the reliability of the product is improved.

[0118] In one embodiment, the coil 120 can be made of a single wire or a plurality of wires twisted together, and is a spiral wound excitation coil 120 or a flat coil 120, etc. The wire includes copper wire, aluminum wire, silver wire, composite wire made of two or more of the above materials, or other low resistivity enameled wire.

[0119] In one embodiment, the first magnetic conductive member 111 and the second magnetic conductive member 112 are made of ferrite or other high magnetic conductive material, and the first magnetic conductive member 111 and the second magnetic conductive member 112 not only change the direction of the magnetic field, but also enhance the magnetic field strength.

[0120] In one embodiment, an electrically insulating layer is arranged between the coil 120 and the second magnetic conductive member 112. Since the coil 120 and the second magnetic conductive member 112 are both conductors, in order to avoid short circuit between the coil 120 and the second magnetic conductive member 112, an electrically insulating layer is arranged between the coil 120 and the second magnetic conductive member 112, for example, the coil 120 can be coated with an electrically insulating layer or the second magnetic conductive member 112 can be coated with an electrically insulating layer. In actual application, since the coil 120 needs to be bent and wound, the bending of the coil 120 will cause the length of the coil 120 to increase, and the electrically insulating layer cannot completely cover the coil 120, or the electrically insulating layer will fall off, ultimately resulting in poor insulation effect, so the surface of the second magnetic conductive member 112 is generally coated with an electrically insulating layer.

[0121] In one embodiment, referring to FIG. 7, the first magnetic conductive member 111 and the second magnetic conductive member 112 are integrally connected, that is, the first magnetic conductive member 111 and the second magnetic conductive member 112 are integrally made of the same material, the manufacturing process is simple, and there is no gap between the first magnetic conductive member 111 and the second magnetic conductive member 112, the magnetic induction lines can be led out from the top end of the second magnetic conductive member 112 and introduced from one of the peripheral edges of the first magnetic conductive member 111, and finally introduced from the bottom end of the second magnetic conductive member 112, forming a loop. It can be understood that in other embodiments of the present application, the first magnetic conductive member 111 and the second magnetic conductive member 112 can also be separately arranged and attached to each other, specifically, the bottom side of the second magnetic conductive member 112 is attached to the top side of the first magnetic conductive member 111, and the positions where the first magnetic conductive member 111 and the second magnetic conductive member 112 are attached to each other are smoothly arranged, so as to ensure that the first magnetic conductive member 111 and the second magnetic conductive member 112 are closely attached to each other, and there is no air gap or a very small air gap therebetween, so that the magnetic induction lines are still introduced from the edge of the first magnetic conductive member 111 and then introduced into the second magnetic conductive member 112 through the first magnetic conductive member 111.

[0122] In one embodiment, referring to FIG. 8, the first magnetic conductive member 111 is a rectangular block structure, the length extension direction (that is, the third direction Z) of the first magnetic conductive member 111 is the same as the length extension direction of the susceptor 231, and the width extension direction (that is, the second direction Y) of the first magnetic conductive member 111 is the same as the width extension direction of the susceptor 231.

[0123] In one embodiment, referring to FIG. 5, the susceptor 231 is in a sheet shape, so that the volume of the susceptor 231 facing the portion of the heating structure 100 is smaller, so that the susceptor 231 needs less energy to be heated, and the requirement of fast smoke generation can be met at low power, achieving the effect of puffing and stopping.

[0124] In one embodiment, referring to FIG. 5, the thickness of the susceptor 231 ranges from 0.005 mm to 0.2 mm, that is, the thickness of the susceptor 231 can be 0.005 mm, 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.10 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, or 0.20 mm. Among them, since the susceptor 231 needs to be arranged on the side of the second magnetic conductor 112 away from the first magnetic conductor 111, the susceptor 231 is heated by induction in the changing magnetic field to heat the aerosol generating substrate 232, in order to meet the requirement of fast smoke generation, the thickness of the susceptor 231 needs to be as thin as possible; in addition, since the susceptor 231 needs to carry the aerosol generating substrate 232, or the susceptor 231 needs to be mixed with the aerosol generating substrate 232 to form a susceptor assembly, and the aerosol generating substrate 232 is a consumable, the susceptor 231 also needs to bear the role of supporting the aerosol generating substrate 232, so the thickness of the susceptor 231 cannot be too thin, at least cannot be less than 0.005 mm.

[0125] In one embodiment, referring to FIG. 5, the susceptor 231 located above the second magnetic conductor 112 is arranged vertically with the second magnetic conductor 112, that is, arranged vertically with the first direction X, so that the susceptor 231 can better cut the magnetic induction lines to generate eddy current heating.

[0126] In one embodiment, referring to FIG. 6, the distance H between the susceptor 231 and the second magnetic conductor 112 ranges from 0.5mm to 5mm. Specifically, the distance H between the susceptor 231 and the second magnetic conductor 112 along the first direction X can be 0.5mm, 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm or 5.0mm. Among them, as shown in FIG. 6, the distance between the susceptor 231 and the second magnetic conductor 112 will affect the heating of the susceptor 231, because when the first magnetic conductor 111, the second magnetic conductor 112 and the coil 120 are assembled, that is, when the heating structure 100 is determined, the magnetic field generated by the heating structure 100 is determined, when the susceptor 231 is too close to the second magnetic conductor 112, the width of the magnetic field acting on the susceptor 231 is too small, which makes the turbine approach the edge of the susceptor 231 slowly, and then the heating rate of the susceptor 231 is slow, and the heating is uneven, in addition, too close will also affect the temperature of the susceptor 231 to the second magnetic conductor 112, affecting the magnetism of the second magnetic conductor 112; when the susceptor 231 is too far away from the second magnetic conductor 112, the magnetic field cannot act on the susceptor 231, and the heating efficiency of the susceptor 231 is slow.

[0127] In a preferred embodiment, the distance between the susceptor 231 and the second magnetic conductor 112 ranges from 0.5mm to 3mm, that is, the distance between the susceptor 231 and the second magnetic conductor 112 is 0.5mm, 1.0mm, 1.5mm, 2.0mm, 2.5mm or 3.0mm.

[0128] In one embodiment, referring to FIG. 5, the projection of the second magnetic conductor 112 on the plane of the susceptor 231 towards the second magnetic conductor 112 is inside the plane, that is, the size of the second magnetic conductor 112 along the third direction Z is smaller than the size of the susceptor 231 along the third direction Z, and the size of the second magnetic conductor 112 along the second direction Y is smaller than the size of the susceptor 231 along the second direction Y, so that the magnetic induction lines from the top of the second magnetic conductor 112 pass through the susceptor 231 and generate a turbine at the edge of the susceptor 231, improving the application rate of the magnetic field, and avoiding that the magnetic induction lines do not pass through the susceptor 231 due to the size of the second magnetic conductor 112 being too large.

[0129] The second case:

[0130] In the second case, all the technical features of the heat generating structure are basically the same as those in the first case, except that: referring to FIGS. 19-24, the heating structure 100 further comprises two third magnetic conductors 113, which are respectively arranged vertically on the first side of the first magnetic conductor 111, and the two third magnetic conductors 113 are arranged on the edge of the first magnetic conductor 111 along the second direction Y, and the second magnetic conductor 112 is arranged between the two third magnetic conductors 113.

[0131] When the first magnetic conductor 111, the second magnetic conductor 112, the third magnetic conductor 113 and the coil 120 are assembled, the magnetic conductor seat 110 is roughly in the shape of the letter E. FIG. 25 is a schematic diagram of the magnetic field distribution of the heating structure 100, from which it can be seen that, by arranging the third magnetic conductors 113 on the opposite sides of the second magnetic conductor 112 along the second direction Y, the purpose is to make the magnetic induction lines emitted from the top end of the second magnetic conductor 112 enter from the top end of the third magnetic conductor 113, rather than from the left and right sides of the first magnetic conductor 111, so as to make the magnetic flux of the susceptor 231 large and the edge magnetic induction lines few, so as to sufficiently heat the susceptor 231, and at the same time, the width of the magnetic induction lines acting on the susceptor 231 along the second direction Y can be increased, so that the generated eddy current can quickly reach the edge of the susceptor 231 along the second direction Y and diffuse to the top side of the susceptor 231, thereby accelerating the heating of the susceptor 231. In addition, the arrangement of the third magnetic conductors 113 makes the magnetic field concentrate between the second magnetic conductor 112 and the third magnetic conductor 113, so that the magnetic field acting on the susceptor 231 is stronger, and the width of the magnetic field acting on the susceptor 231 along the second direction Y is larger, so that the heating rate of the susceptor 231 is faster.

[0132] In one embodiment, the length extension direction of the susceptor 231 is the third direction Z, and the width extension direction of the susceptor 231 is the second direction Y, that is, when the position is laid out, the direction of the first magnetic conductor 111 with the two third magnetic conductors 113 is arranged to be the same as the length extension direction of the susceptor 231, so that the arrangement of the two third magnetic conductors 113 can increase the magnetic induction lines acting on the width range of the susceptor 231.

[0133] In one embodiment, referring to FIG. 25, the second magnetic conductor 112 has a first height H1 along the first direction X, and the third magnetic conductor 113 has a second height H2 along the first direction X; H1≧1 / 2H2; H2≧1 / 2H1. As analyzed above, the third magnetic conductor 113 enables the magnetic flux lines emitted from the top end of the second magnetic conductor 112 to enter from the top end of the third magnetic conductor 113, so that the magnetic flux lines can be concentrated at the position of the susceptor 231 along the first direction X to sufficiently heat the susceptor 231, and meanwhile, the width of the magnetic flux lines acting on the susceptor 231 along the second direction Y can be increased. Therefore, the height of the third magnetic conductor 113 cannot be too low. When the second height H2 of the third magnetic conductor 113 is less than half of the first height H1 of the second magnetic conductor 112, the magnetic flux lines emitted from the top end of the second magnetic conductor 112 need to be bent downward substantially to enter the third magnetic conductor 113, which makes the third magnetic conductor 113 fail to change the direction of the magnetic flux lines. In addition, the height of the third magnetic conductor 113 cannot be too high. For example, when the first height H1 of the second magnetic conductor 112 is less than half of the second height H2 of the second magnetic conductor 112, the magnetic flux lines emitted from the top end of the second magnetic conductor 112 can enter the third magnetic conductor 113 before reaching the top end of the third magnetic conductor 113, which makes the magnetic flux lines fail to cut the susceptor 231, and thus the heating effect cannot be achieved or the heating efficiency is too slow. In the embodiment, the height relationship between the second magnetic conductor 112 and the third magnetic conductor 113 is limited, so that the third magnetic conductor 113 can achieve the effect of rapid heating.

[0134] In one embodiment, referring to FIG. 20 and FIG. 23, along the second direction Y, the second magnetic conductor 112 is arranged at the center of the first magnetic conductor 111, and two third magnetic conductors 113 are symmetrically arranged at opposite sides of the second magnetic conductor 112, so that the varying magnetic field generated by the heating structure 100 is symmetrically arranged along the second direction Y. In this way, the heating speed and the heating effect of the susceptor 231 along the second direction Y are symmetrically and uniformly distributed.

[0135] In one embodiment, referring to FIG. 19 to FIG. 25, the size of the first magnetic conductor 111 along the second direction Y is smaller than the size of the first magnetic conductor 111 along the third direction Z, that is, the size of the first magnetic conductor 111 along the length extension direction of the susceptor 231 is longer, and the length extension direction of the second magnetic conductor 112 is the third direction Z. In this way, the size of the second magnetic conductor 112 along the third direction Z can be designed to be longer, and the size of the second magnetic conductor 112 is larger, which can enhance the magnetic field and improve the utilization rate of the magnetic field.

[0136] In another embodiment of the present application, referring to Figs. 26-29, the size of the first magnetic conductive member 111 along the second direction Y is greater than the size of the first magnetic conductive member 111 along the third direction Z, that is, the size of the first magnetic conductive member 111 along the width extension direction of the susceptor 231 is longer. In this way, the magnetic field generated by the heating structure 100 on the susceptor 231 has a greater width, which is beneficial to improve the heating efficiency. In addition, the gap between the second magnetic conductive member 112 and the third magnetic conductive member 113 is large enough to allow the coil 120 to be wound multiple times. By increasing the number of turns of the coil 120, the magnetic induction intensity of the coil 120 is increased. By using a coil 120 with a larger cross-sectional area, the loss and temperature of the coil 120 itself are reduced, and the reliability of the product is improved.

[0137] In the present application, according to different heating requirements of the heating structure 100, the number of the second magnetic conductive member 112 can be one, two or more. The following examples are described in turn.

[0138] In one embodiment, referring to Figs. 19-29, the number of the second magnetic conductive member 112 is one, and the second magnetic conductive member 112 is arranged at the center of the first magnetic conductive member 111 along the second direction Y. The size of the second magnetic conductive member 112 along the third direction Z is less than or equal to the size of the first magnetic conductive member 111 along the third direction Z. In this way, the varying magnetic field generated by the heating structure 100 is symmetrically arranged along the second direction Y, so that the heating speed of the susceptor 231 along the second direction Y is symmetrically uniform.

[0139] In this embodiment, the cross-sectional area of the second magnetic conductive member 112 can be rectangular, circular, elliptical or track-shaped, or a combination of two of the above shapes.

[0140] In another embodiment of the present application, referring to Figs. 30 and 31, the number of the second magnetic conductive member 112 is two or more, each second magnetic conductive member 112 is arranged between two third magnetic conductive members 113, and each second magnetic conductive member 112 is arranged on the first magnetic conductive member 111 along the third direction Z, that is, the two third magnetic conductive members 113 are still symmetrically arranged on opposite sides of each second magnetic conductive member 112.

[0141] In this embodiment, when winding the coil 120, a single set of coils 120 is spirally wound around the periphery of each second magnetic conductive member 112, that is, each second magnetic conductive member 112 is regarded as a magnetic whole, and then the coil 120 is wound around the periphery of this magnetic whole. Compared with the arrangement of a single second magnetic conductive member 112, this arrangement breaks the heating area acting on the susceptor 231, which is beneficial to increase the heating area and make the heating uniform on the susceptor 231.

[0142] In another embodiment of the present application, referring to FIGS. 32-35, the number of the second magnetic conductors 112 is two or more, and the number of the coils 120 is also two or more, and the number of the coils 120 is the same as the number of the second magnetic conductors 112, each of the second magnetic conductors 112 is wound with a group of the coils 120, and the adjacent two groups of the coils 120 are connected in series or in parallel.

[0143] Specifically, the winding directions of the adjacent two groups of the coils 120 can be the same or opposite. When the winding directions of the adjacent two groups of the coils 120 are the same, the current directions of the two groups of the coils 120 are also the same, the magnetic field generated thereby is repulsive at the near end (the end where the two groups of the coils 120 are connected to each other) and is enhanced at the far end (the end where the two groups of the coils 120 are away from each other), which is beneficial to improve the heating length of the susceptor 231.

[0144] When the winding directions of the adjacent two groups of the coils 120 are opposite, the current directions of the two groups of the coils 120 are also opposite, the magnetic field generated thereby is enhanced in the same direction at the near end, and there is a heating zone in the middle, which is beneficial to improve the heating uniformity of the susceptor within the range of the coils 120.

[0145] In the embodiment of the at least two second magnetic conductors 112, the cross-sectional shape of the second magnetic conductors 112 can be rectangular, circular, oval, or track-shaped, or can also be a combination of the above two shapes.

[0146] In one embodiment, referring to FIG. 20, along the first direction X, the height of the coil 120 is not higher than the height of the second magnetic conductor 112, so that the magnetic field generated by the coil 120 can pass through the second magnetic conductor 112 as much as possible, thereby improving the utilization rate of the magnetic field.

[0147] In one embodiment, the first magnetic conductor 111, the second magnetic conductor 112, and the third magnetic conductor 113 are made of ferrite or other high magnetic conductive material, and the first magnetic conductor 111, the second magnetic conductor 112, and the third magnetic conductor 113 not only have the effect of changing the direction of the magnetic field, but also have the effect of enhancing the magnetic field strength.

[0148] In one embodiment, referring to FIG. 20, the first magnetic conductor 111, the second magnetic conductor 112 and the third magnetic conductor 113 are integrally connected, that is, the first magnetic conductor 111, the second magnetic conductor 112 and the third magnetic conductor 113 are integrally made of the same material, the manufacturing process is simple, and there is no gap between the first magnetic conductor 111, the second magnetic conductor 112 and the third magnetic conductor 113, the magnetic induction lines can be emitted from the top end of the second magnetic conductor 112 and introduced from the top end of the third magnetic conductor 113, and finally returned to the second magnetic conductor 112 through the first magnetic conductor 111 to form a loop. It can be understood that in other embodiments of the present application, the first magnetic conductor 111, the second magnetic conductor 112 and the third magnetic conductor 113 can also be separately provided, and the second magnetic conductor 112 and the third magnetic conductor 113 are attached to the first magnetic conductor 111. Specifically, the bottom side of the second magnetic conductor 112 is attached to the top side of the first magnetic conductor 111, and the positions where the first magnetic conductor 111 and the second magnetic conductor 112 are attached to each other are smoothly arranged to ensure that the first magnetic conductor 111 and the second magnetic conductor 112 are closely attached to each other with little or no air gap therebetween, thereby ensuring that the magnetic induction lines are distributed according to the predetermined trajectory.

[0149] The third case:

[0150] In the third case, all the technical features of the heating structure are basically the same as those of the heating structure in the second case, except that: referring to FIGS. 36 and 37, the susceptor 231 is arranged on the side of the second magnetic conductor 112 away from the first magnetic conductor 111, and the varying magnetic field generated by the heating structure 100 is coupled with the susceptor 231 to heat the aerosol generating substrate 232; referring to FIGS. 39 to 41, the susceptor 231 is formed with a channel 2311 penetrating in the first direction X.

[0151] In actual application, since the susceptor 231 is an integral sheet structure, and the magnetic induction lines generally pass through the two side edges of the susceptor 231 in the second direction Y and form eddy currents at the two side edges, which results in a large temperature difference between the center and the two side edges of the susceptor 231 in the second direction Y, and poor heating uniformity.

[0152] The arrangement of the channel 2311 on the susceptor 231 can ensure that the magnetic induction lines can effectively pass through the channel 2311 of the susceptor 231, can increase the eddy current density of the channel 2311, and can improve the problem of large temperature difference between the center and the two side edges of the susceptor 231 and improve the heating uniformity.

[0153] In one embodiment, referring to FIG. 39 and FIG. 40, the channels 2311 are through holes formed on the susceptor 231, and the through holes are arranged on the susceptor 231 in a plurality of rows. In this embodiment, by forming a plurality of through holes on the susceptor 231, the magnetic flux can effectively pass through the through holes, the eddy current density at the position of the through holes can be increased, and the problem of large temperature difference between the center and the two edges of the susceptor 231 can be solved, thereby improving the heating uniformity.

[0154] In this embodiment, the positions of the through holes can be set according to actual heating requirements. For example, the through holes can be arranged on the entire susceptor 231, the through holes can be arranged on the susceptor 231 in a certain pattern, or the through holes can be arranged on the susceptor 231 in disorder.

[0155] In one specific embodiment, referring to FIG. 39, each through hole is arranged at the middle position of the susceptor 231 along the second direction Y, and each through hole is arranged along the third direction Z in sequence. The second direction Y is the width extension direction of the susceptor 231, and the third direction Z is the length extension direction of the susceptor 231. In this embodiment, the through holes are arranged at the middle position of the susceptor 231 along the second direction Y, that is, the middle position in the width direction, so that the problem of large temperature difference between the center and the two edges of the susceptor 231 in the width direction can be solved, thereby improving the heating uniformity. In addition, each through hole is arranged along the third direction Z in sequence, so that each position of the susceptor 231 along the length direction is also heated uniformly. It can be understood that in other embodiments, the susceptor 231 can also be provided with a plurality of rows of through holes arranged along the second direction Y, which is not limited herein.

[0156] In addition, when the channels 2311 are through holes, the cross-sectional shape of the through holes can be circular, rectangular, triangular, or other shapes. For example, the through holes in FIG. 39 are circular, and the through holes in FIG. 40 are rectangular.

[0157] In another embodiment of the present application, referring to FIG. 41, the channels 2311 can also pass through the susceptor 231 at opposite ends along the third direction Z, that is, the channels 2311 separate the susceptor 231 along the second direction Y, or the susceptor 231 can also be formed by two sheets arranged along the second direction Y in sequence.

[0158] In the above embodiments, the channels 2311 can extend linearly along the third direction Z, or the channels 2311 can extend along the third direction Z in a curved or bent manner. The number of the channels 2311 can be one or a plurality of channels, and the plurality of channels 2311 are arranged along the second direction Y in sequence.

[0159] In addition, referring to FIG. 22 and FIG. 38, the heating structure 100 in the above embodiment further comprises a third magnetic conducting member 113, which has the same structure shape, position, material and corresponding magnetic field distribution as the heating structure 100 in the second case, and thus no repeated description is given herein.

[0160] The fourth case:

[0161] Referring to FIG. 42 to FIG. 44, the heating structure 100 comprises a fourth magnetic conducting member 130 and a coil 120. The fourth magnetic conducting member 130 has two magnetic ends 134, and extends from one magnetic end 134 to the other magnetic end 134 with at least two bends in between, and an opening 133 is formed between the two magnetic ends 134. The coil 120 is arranged on the fourth magnetic conducting member 130 along the extending direction of the fourth magnetic conducting member 130, and is used to be connected with an alternating current to generate a changing magnetic field. In the state that the heating structure 100 is installed on the power supply assembly 2, the coil 120 is connected with the power supply assembly 2.

[0162] The coil 120 is used to be connected with the power supply assembly 2, specifically, the coil 120 is electrically connected with the circuit structure 22 in the power supply assembly 2, and the power supply assembly 2 is used to provide an alternating current for the coil 120, and the coil 120 generates an alternating magnetic field under the action of the alternating current.

[0163] The fourth magnetic conducting member 130 is made of a magnetic conducting material, and has a magnetic conducting effect and a magnetic field strengthening effect. The two magnetic ends 134 are opposite ends of the fourth magnetic conducting member 130, and the fourth magnetic conducting member 130 extends with at least two bends, which means that the extending direction of the fourth magnetic conducting member 130 changes at least twice, and it is emphasized that the changes of the extending direction of the fourth magnetic conducting member 130 are all towards the center of the fourth magnetic conducting member 130, that is, the extending direction of the fourth magnetic conducting member 130 changes at least twice to make the whole fourth magnetic conducting member 130 tend to be a closed structure, but the fourth magnetic conducting member 130 in the present application is not a closed structure, because the opening 133 is formed between the two magnetic ends 134 of the fourth magnetic conducting member 130, and the opening 133 makes the fourth magnetic conducting member 130 broken at the opening 133 and distribute the magnetic field. When the susceptor 231 is arranged through the opening 133, or the susceptor 231 is arranged outside the fourth magnetic conducting member 130 and parallel to the opening 133, the susceptor 231 can cut the magnetic induction lines and generate heat. Here, the parallel to the opening 133 means that the two magnetic ends 134 of the fourth magnetic conducting member 130 are arranged apart along the first direction X, and the susceptor 231 is arranged parallel to the first direction X.

[0164] When the coil 120 is wound around the fourth magnetic conductor 130 along the extension direction of the fourth magnetic conductor 130, the fourth magnetic conductor 130 can guide the changing magnetic field generated by the coil 120. Specifically, when the fourth magnetic conductor 130 and the coil 120 are assembled, the magnetic induction line distribution of the heating structure 100 is as shown in FIGS. 43 and 44. Two magnetic ends 134 are spaced apart to form an opening 133 along the first direction X. When the susceptor 231 is arranged perpendicularly to the first direction X, the magnetic induction line can effectively cut the susceptor 231, improving the coupling efficiency of the susceptor 231 and the magnetic field and the magnetic heat conversion efficiency, meeting the requirement of rapid smoke generation, and reducing the cost. Meanwhile, the fourth magnetic conductor 130 can improve the magnetic induction intensity generated by the coil 120, further improving the heating efficiency.

[0165] The heating structure 100 provided by the embodiment of the present application has the fourth magnetic conductor 130 extending from one of the magnetic ends 134 to the other magnetic end 134, and at least twice bent in the middle. The two magnetic ends 134 are spaced apart to form the opening 133, and the coil 120 is wound around the fourth magnetic conductor 130 along the extension direction of the fourth magnetic conductor 130. Thus, the magnetic induction line of the fourth magnetic conductor 130 is relatively concentrated, and the edge magnetic flux is small. When the susceptor 231 is arranged at the opening 133, the magnetic induction line generated by the coil 120 can effectively cut the susceptor 231, improving the coupling efficiency of the susceptor 231 and the magnetic field and the heating efficiency, and realizing rapid smoke generation. Meanwhile, arranging the susceptor 231 at the opening 133 of the fourth magnetic conductor 130 can effectively avoid the difference in coupling efficiency and heating efficiency caused by the movement or assembly fluctuation of the susceptor 231, increasing the consistency and stability of heating.

[0166] In one embodiment, the fourth magnetic conductor 130 is made of ferrite or other high-permeability magnetic material. The fourth magnetic conductor 130 not only has the effect of changing the direction of the magnetic field, but also has the effect of enhancing the magnetic field intensity.

[0167] In one embodiment, referring to FIG. 42, the susceptor 231 is in a sheet shape. The sheet-shaped susceptor 231 has a small thickness and a small volume, and requires less energy when heated. The susceptor 231 can meet the requirement of rapid smoke generation at low power, achieving the effect of instant smoking and instant stopping.

[0168] Referring to FIGS. 52 and 53, when the susceptor 231 is in a sheet shape, the aerosol generating substrate 232 can be attached to one side of the susceptor 231. The susceptor 231 heats and does not burn the aerosol generating substrate 232 to generate aerosol. Alternatively, the aerosol generating substrate 232 can be attached to both sides of the susceptor 231. The susceptor 231 heats and does not burn the aerosol generating substrates 232 on both sides to generate aerosol.

[0169] In another embodiment of the present application, referring to FIG. 54, the susceptor 231 can also be tubular, and the aerosol generating substrate 232 is received in the inner cavity of the susceptor 231, and the aerosol generating substrate 232 inside the tubular susceptor 231 is heated and combusted to generate aerosol.

[0170] In one embodiment, the susceptor 231 is arranged in the first direction X, that is, the susceptor 231 is arranged to cut the magnetic field lines vertically, and the magnetic flux of the susceptor 231 is increased, and the utilization rate of the magnetic field is improved.

[0171] In one embodiment, referring to FIGS. 43 and 44, the magnetic end 134 of the fourth magnetic conducting member 130 and the susceptor 231 have a first distance D1, and the first distance D1 is in the range of 0.5 mm-10 mm. Specifically, the first distance can be 0.5 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, 6.0 mm, 6.5 mm, 7.0 mm, 7.5 mm, 8.0 mm, 8.5 mm, 9.0 mm, 9.5 mm, or 10.0 mm. In actual application, the first distance D1 between the susceptor 231 and the magnetic end 134 should not be too large or too small. If the first distance D1 is too large, the edge magnetic flux will be too large, the effective cutting of the magnetic field lines by the susceptor 231 will be less, and the coupling efficiency will be low. If the first distance D1 is too large, the heat of the susceptor 231 will be transferred to the fourth magnetic conducting member 130, the temperature of the fourth magnetic conducting member 130 will be too high, and the performance of the fourth magnetic conducting member 130 will be affected. Therefore, the first distance D1 should be limited to the range of 0.5 mm-10 mm.

[0172] In one embodiment, referring to FIGS. 45 and 46, the fourth magnetic conducting member 130 includes a first magnetic conducting segment 131 and a second magnetic conducting segment 132 connected to the opposite ends of the first magnetic conducting segment 131, and the ends of the two second magnetic conducting segments 132 away from the first magnetic conducting segment 131 are oppositely spaced to form an opening 133.

[0173] The first magnetic conducting segment 131 can extend along a straight line or a curved line. The second magnetic conducting segment 132 can extend along a straight line or a curved line, and the second magnetic conducting segment 132 can also be connected by multiple bent segments.

[0174] In one embodiment, referring to FIG. 46, one end of the second magnetic conducting segment 132 is connected to the first magnetic conducting segment 131, the ends of the two second magnetic conducting segments 132 away from the first magnetic conducting segment 131 are spaced to form the opening 133, the second distance D2 is between the ends of the two second magnetic conducting segments 132 adjacent to the first magnetic conducting segment 131, the third distance D3 is between the ends of the two second magnetic conducting segments 132 away from the first magnetic conducting segment 131, and H3 is less than or equal to H2. The second distance D2 is the length of the first magnetic conducting segment 131, and in actual applications, the coil 120 is generally wound around the first magnetic conducting segment 131, so the first magnetic conducting segment 131 needs to be designed to be slightly longer. In addition, when the susceptor 231 is arranged through the opening 133, the second distance D2 between the susceptor 231 and the magnetic end 134 cannot be too large, because the larger the second distance D2 is, the more the magnetic flux passing through the edge will be, resulting in less effective cutting of the magnetic flux by the susceptor 231 and low coupling efficiency. In general, when designing the fourth magnetic conducting member 130, the third distance D3 needs to be set to be less than or equal to the second distance D2, so as to facilitate the installation of the coil 120 while ensuring high coupling efficiency.

[0175] In one embodiment, referring to FIG. 45 and FIG. 46, the width of the opening 133 is less than or equal to the distance between the two second magnetic conducting segments 132, that is, the third distance D3 is less than or equal to the relative distance between any point between the two second magnetic conducting segments 132, that is, the distance between the ends of the two second magnetic conducting segments 132 away from the first magnetic conducting segment 131 is the smallest among the two second magnetic conducting segments 132. In this way, the space enclosed by the first magnetic conducting segment 131 and the two second magnetic conducting segments 132 is large enough, and the third distance D3 is small enough to ensure that the susceptor 231 can effectively cut the magnetic flux under the premise of meeting the assembly of the coil 120.

[0176] Embodiment one:

[0177] Referring to FIG. 45, the second magnetic conducting segment 132 can extend along a straight line, that is, the two second magnetic conducting segments 132 are arranged in parallel and spaced apart, and the distance between any point between the two second magnetic conducting segments 132 is equal.

[0178] In this embodiment, as shown in FIG. 47 and FIG. 48, the fourth magnetic conductor 110 is generally U-shaped, and the coil 120 can be one group or multiple groups. When the coil 120 is one group, the group of coils 120 can be sleeved on the first magnetic conductor segment 131 or the second magnetic conductor segment 132. When the coil 120 is sleeved on the first magnetic conductor segment 131, the occupied space is relatively small. When the coil 120 has multiple groups, one group of coils 120 can be sleeved on the first magnetic conductor segment 131, and another group of coils 120 can be sleeved on the second magnetic conductor segment 132. Alternatively, two groups of coils 120 can be sleeved on two second magnetic conductor segments 132, respectively. Alternatively, coils 120 can be sleeved on the first magnetic conductor segment 131 and two second magnetic conductor segments 132. In addition, when the coil 120 has multiple groups, each group of coils 120 can be arranged in series or in parallel.

[0179] When the coil 120 is sleeved on the first magnetic conductor segment 131 and / or the second magnetic conductor segment 132, the magnetic field distribution of the entire heating structure 100 is as shown in FIG. 43. At this time, the susceptor 231 can be arranged transversely through the opening 133, that is, the susceptor 231 is arranged between the two second magnetic conductor segments 132, and the susceptor 231 is perpendicular to the first direction X, so that the susceptor 231 can effectively cut the magnetic induction lines to generate eddy currents and heat. In addition, from the distribution of the magnetic field in the figure, it can be seen that the susceptor 231 can also be arranged on the side of the two second magnetic conductor segments 132 away from the first magnetic conductor segment 131, and the susceptor 231 is arranged parallel to the first direction X and perpendicular to the second direction Y. In this way, the susceptor 231 can also effectively cut the magnetic induction lines and generate eddy currents.

[0180] Embodiment Two:

[0181] In this embodiment, the entire technical features of the heating structure 100 are basically the same as those of the heating structure 100 in Embodiment One. The difference lies in that in this embodiment, the second magnetic conductor segment 132 extends along a curve, and the two second magnetic conductor segments 132 extend along outward convex curves, so that the inner cavity size of the entire fourth magnetic conductor 110 is large enough to provide sufficient space for the coil 120 whether it is sleeved on the first magnetic conductor segment 131 or the second magnetic conductor segment 132, and also to ensure that the distance between the two end portions of the two second magnetic conductor segments 132 meets the assembly requirements of the susceptor 231.

[0182] Embodiment Three:

[0183] The technical features of the heating structure 100 in this embodiment are basically the same as those in Embodiment 1, except that, as shown in FIG. 46, the second magnetic conduction segment 132 includes a first magnetic conduction part 1321 connected with the first magnetic conduction segment 131 and a second magnetic conduction part 1322 connected with the first magnetic conduction part 1321; the two first magnetic conduction parts 1321 are oppositely arranged, and the two second magnetic conduction parts 1322 are oppositely spaced to form an opening 133.

[0184] When the second magnetic conduction part 1322 is not provided, the second magnetic conduction segment 132 is the same as that in FIG. 45. In this embodiment, the provision of the second magnetic conduction part 1322 makes the distance between the two second magnetic conduction segments 132 at the opening 133 smaller, i.e., the distance between the two first magnetic conduction parts 1321 larger, which facilitates the installation of the coil 120 on the first magnetic conduction segment 131, the first magnetic conduction part 1321 and the second magnetic conduction part 1322, and at the same time, the smaller the size of the opening 133, the better the assembly requirement of the susceptor 231 can be met.

[0185] In this embodiment, as shown in FIGS. 49-51, the coil 120 can be one group or multiple groups. When the coil 120 is one group, the group of coils 120 can be sleeved on the first magnetic conduction segment 131 or the first magnetic conduction part 1321 or the second magnetic conduction part 1322. When the coil 120 is sleeved on the first magnetic conduction segment 131, the occupied space is relatively small. When the coil 120 has multiple groups, the coils 120 can be wound on two, three, four or five of the first magnetic conduction segment 131, the two first magnetic conduction parts 1321 and the two second magnetic conduction parts 1322. In addition, when the coil 120 has multiple groups, the coils 120 in each group can be arranged in series or in parallel.

[0186] In addition, in this application, as shown in FIG. 2, the aerosol generating system further includes a driving structure 300, a conveying assembly 220 and a medium belt 230. The output end of the driving structure 300 is connected with the input end of the conveying assembly 220, and the conveying assembly 220 is used for conveying the medium belt 230. The susceptor 231 is the part of the medium segment of the medium belt 230 opposite to the second magnetic conduction member 112 and used for coupling with the magnetic field. The conveying assembly 220 is used for moving the medium belt 230 to the position opposite to the second magnetic conduction member 112 in sequence. In this way, the movement of the medium belt 230 can realize fresh medium for each baking, so as to ensure the consistency of each baking and heating, and good smoking experience.

[0187] It should be noted that, due to the conveying of the conveying assembly 220, the medium belt 230 is constantly in motion, and the position of the medium belt 230 is constantly changing, because the portion of the medium belt 230 coupled to the second magnetic conductor 112 also continuously changes. For ease of description, the portion of the medium belt 230 coupled to the second magnetic conductor 112 at each moment is referred to as a medium segment.

[0188] In one embodiment, referring to FIG. 5, the aerosol generating substrate 232 is attached to the side of the susceptor 231 away from the heating structure 100, and the susceptor 231 and the aerosol generating substrate 232 together form a medium segment. The heating structure 100 is used to act on the medium segment in a changing magnetic field, so that the medium segment generates aerosol in a heated and unburned state.

[0189] In this embodiment, the susceptor 231 not only needs to be able to generate eddy currents in a changing magnetic field, but also needs to have a certain toughness to be able to bend and transmit. At this time, the susceptor 231 can be composed of a metal or alloy with a relatively low resistivity, such as an aluminum foil, graphite, or a thin sheet of a ferromagnetic material.

[0190] In another embodiment of the present application, low-resistivity metal or alloy particles can also be mixed into the aerosol generating substrate and processed integrally to form an integrated medium belt 230 capable of generating aerosol or other media that need to be heated. The medium belt 230 can heat up and generate aerosol in a changing magnetic field. In this embodiment, the collection of low-resistivity metal or alloy particles is the susceptor 231. When the structural strength and flexibility of the medium belt 230 formed by the susceptor 231 and the aerosol generating substrate are both good, there is no need to provide a substrate under the medium belt 230 to support the medium belt 230. If the structural strength and flexibility of the medium belt 230 are poor, a substrate with toughness needs to be provided under the medium belt 230 to support and transmit the medium belt 230.

[0191] In one embodiment, referring to FIGS. 2 to 4, the aerosol generating system includes a replaceable medium assembly 200, which includes a mounting box 210, a conveying assembly 220 mounted in the mounting box 210, and a medium belt 230 wound on the conveying assembly 220. The heating structure 100 is arranged outside the mounting box 210 and is used to heat the medium belt 230. The driving structure 300 is arranged outside the mounting box 210, and the output end of the driving structure 300 forms a detachable connection with the input end of the conveying assembly 220. In this way, when the medium belt 230 is used up, the entire replaceable medium assembly 200 can be detached and replaced, so that one aerosol generating device can match multiple replaceable medium assemblies 200, reducing the user's use cost and being environmentally friendly.

[0192] In one embodiment, referring to FIG. 2 and FIG. 4, the conveying assembly 220 comprises a first roller 221, a second roller 222 and a plurality of guide wheels 223, the first roller 221 and the second roller 222 are arranged in a spaced manner, the plurality of guide wheels 223 are arranged in sequence between the first roller 221 and the second roller 222, the central axis of the first roller 221, the central axis of the second roller 222 and the central axis of each guide wheel 223 are arranged in parallel, the first end of the medium strip 230 is wound on the first roller 221, the second end of the medium strip 230 is wound on the second roller 222, the first roller 221 is connected with the output end of the driving structure 300, the second roller 222 is connected with a torsion spring 224 so that the second roller 222 has a rotational pre-tightening force to make the medium strip 230 in a taut state. In the initial state, the medium strip 230 is not heated, and the medium strip 230 is basically wound on the first roller 221, when the driving structure 300 drives the first roller 221 to rotate, the first roller 221 rotates and starts to release the medium strip 230, while the second roller 222 starts to wind the medium strip 230 under the action of the torsion spring 224, so that the medium strip 230 starts to be continuously transmitted, so that the medium strip 230 passes through the heating structure 100 in sequence, thereby making the medium strip 230 be heated in sequence and generate aerosol, and the used medium strip 230 is transmitted to the second roller 222 in sequence and wound and collected by the second roller 222. After the medium strip 230 is completely used, the replaceable medium assembly 200 can be taken out to replace a new replaceable medium assembly 200.

[0193] In one embodiment, referring to FIG. 2 and FIG. 4, the first roller 221, the second roller 222 and each guide wheel 223 are rotatably arranged in the mounting box 210, one side wall of the mounting box 210 is concave from the outside to the inside to form a receiving groove 211, in the state that the mounting box 210 is mounted on the power assembly 2, the heating structure 100 is received in the receiving groove 211, and the side wall of the mounting box 210 is concave inside to form a support table 212 inside, the medium strip 230 passes through the top side of the support table 212 in sequence during transmission, that is, passes above the heating structure 100 to be heated by the heating structure 100, and the support table 212 also has a supporting effect on the medium strip 230.

[0194] In one embodiment, referring to FIG. 4, one guide wheel 223 is arranged on each of the opposite sides of the support table 212 along the third direction Z, the two guide wheels 223 are symmetrically arranged along the second direction Y, through the arrangement of the two guide wheels 223, the medium strip 230 located between the two guide wheels 223 is in a parallel state and located above the second magnetic member 112.

[0195] In one embodiment, referring to FIG. 4, the installation box 210 is provided with a partition 213, which is used to divide the cavity of the installation box 210 into a first cavity 214 and a second cavity 215. The first roller 221 is arranged in the first cavity 214, and the second roller 222 is arranged in the second cavity 215. That is, the unused medium strip 230 is arranged in the first cavity 214, and the used medium strip 230 is arranged in the second cavity 215, so as to avoid the smell of the heated medium strip 230 from flowing into the first cavity 214 and affecting the taste of the medium strip 230.

[0196] In one embodiment, referring to FIG. 4, the driving structure 300 is arranged outside the installation box 210, and the driving structure 300 is detachably connected with the installation box 210, so that the installation box 210 can be replaced. The output end of the driving structure 300 is detachably connected with the roller shaft of the second roller 222 in the installation box 210. The output end of the driving structure 300 is detachably connected with the roller shaft of the second roller 222 in the installation box 210 through the clamping structure 225. For example, it can be a elastic plug-in fit or an interference plug-in fit.

[0197] In one embodiment, referring to FIG. 2 and FIG. 4, the top of the installation box 210 is provided with an air guide hole 216 which is in communication with the upper side of the medium strip 230. The aerosol generating device further comprises a housing 3 and a suction nozzle 4. The housing 3 is arranged outside the power supply assembly 2 and the heating structure 100. The suction nozzle 4 is arranged on the top of the housing 3 and is in communication with the air guide hole 216. The generated aerosol can be guided out by suctioning the suction nozzle 4.

[0198] In one embodiment, referring to FIG. 2, the aerosol generating device further comprises a mounting rack. The battery 21, the circuit structure 22, the replaceable medium assembly 200 and the driving structure 300 are all arranged on the mounting rack. The housing 3 is arranged outside each structure.

[0199] The above is only an optional embodiment of the present application and is not used to limit the present application. The present application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A heating structure for generating a varying magnetic field to heat an aerosol generating substrate coupled with a susceptor, characterized in that, The heating structure comprises a first magnetic conductor, a second magnetic conductor, and a coil, the second magnetic conductor is vertically arranged on the first side of the first magnetic conductor along a first direction, the coil is spirally wound around the periphery of the second magnetic conductor along the first direction and supported on the first magnetic conductor, and the coil is used for connecting alternating current to generate a changing magnetic field.

2. The heating structure according to claim 1, characterized in that The width of the second magnetic conductor along a second direction is less than or equal to the width of the first magnetic conductor along the second direction. The length of the second magnetic conductor along a third direction is less than or equal to the length of the first magnetic conductor along the third direction.

3. The heating structure of claim 1, wherein, The number of the second magnetic conductors is two or more, and a group of coils are spirally wound around the periphery of each second magnetic conductor along the first direction. Alternatively, the number of the second magnetic conductors is two or more, and each second magnetic conductor has a group of coils wound thereon.

4. The heating structure of claim 1, wherein, The heating structure further comprises two third magnetic conductors, which are vertically arranged on the first side of the first magnetic conductor respectively, and are arranged at the edge position of the first magnetic conductor along the second direction, and the second magnetic conductor is arranged between the two third magnetic conductors.

5. The heating structure of claim 4, wherein, The second magnetic conductor has a first height H1 along the first direction, and the third magnetic conductor has a second height H2 along the first direction. H1 is greater than or equal to 1 / 2 H2. H2 is greater than or equal to 1 / 2 H1.

6. An aerosol-generating device comprising: The heating structure comprises a power supply component and the heating structure according to any one of claims 1 to 5, and the power supply component is electrically connected with the heating structure.

7. An aerosol-generating system comprising, The aerosol generating device comprises a susceptor and the aerosol generating device according to claim 6, and the aerosol generating device comprises a heating structure comprising a first magnetic conductor and a second magnetic conductor, and the susceptor is arranged on the side of the second magnetic conductor away from the first magnetic conductor and is spaced apart from the second magnetic conductor.

8. An aerosol-generating system according to claim 7, wherein, The changing magnetic field generated by the heating structure is coupled with the susceptor to heat the aerosol generating substrate, and the susceptor forms a channel penetrating along the first direction.

9. An aerosol-generating system according to claim 8, wherein, The channel is a through hole, and the number of the through holes is multiple.

10. An aerosol-generating system according to claim 9, wherein, Each through hole is arranged at the middle position of the susceptor along a second direction, and each through hole is sequentially and spaced apart along a third direction, the second direction is the width extension direction of the susceptor, and the third direction is the length extension direction of the susceptor.

11. An aerosol-generating system according to claim 8, wherein, The channel penetrates through the opposite ends of the susceptor along the third direction.

12. A heating structure for generating a varying magnetic field to heat an aerosol generating substrate coupled with a susceptor, characterised in that, The heating structure comprises: A fourth magnetic conductor, the fourth magnetic conductor has two magnetic ends, the fourth magnetic conductor extends from one magnetic end to the other magnetic end, and at least passes through twice bending in the middle, and the two magnetic ends are spaced apart to form an opening; A coil, which is wound outside the magnetic conductor along the extension direction of the fourth magnetic conductor, and the coil is used for connecting alternating current to generate a changing magnetic field.

13. The heating structure of claim 12, wherein, The fourth magnetic conductor comprises a first magnetic segment and a second magnetic segment connected to the opposite ends of the first magnetic segment, and the ends of the two second magnetic segments away from the first magnetic segment are spaced apart to form the opening.

14. The heating structure of claim 13, wherein, The width of the opening is less than or equal to the distance between the two second magnetic segments.

15. The heating structure of claim 13, wherein, The second magnetic conductive section comprises a first magnetic conductive part connected with the first magnetic conductive section and a second magnetic conductive part connected with the first magnetic conductive part; two first magnetic conductive parts are oppositely arranged, and two second magnetic conductive parts are oppositely spaced to form the opening.

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