Aerosol generating device

Abstract

The present application provides an aerosol generating device, comprising a main unit housing (100) in which a magnetic induction heating assembly (200) and a substrate cartridge (300) are provided. The substrate cartridge (300) comprises a housing (301), and a substrate ribbon (302), a first reel (303) and a second reel (304) which are arranged in the housing (301); the substrate ribbon (302) is at least partially wound on the first reel (303) and the second reel (304); the first reel (303) or the second reel (304) can rotate to drive the substrate ribbon (302) to move between the first reel (303) and the second reel (304); and a magnetic induction heating layer (3021) is provided on the substrate ribbon (302). The magnetic induction heating assembly (200) comprises at least two magnetic induction coils (201); the at least two magnetic induction coils (201) are respectively arranged on two sides of the substrate ribbon (302) between the first reel (303) and the second reel (304) along the thickness direction of the substrate ribbon (302); and the at least two magnetic induction coils (201) can work simultaneously and form superimposed magnetic fields, thereby facilitating rapid heating of the substrate ribbon (302), shortening a preheating time and increasing the amount of aerosol, and improving user experience.

Description

An aerosol-generating device

[0001] The present application claims priority to the Chinese patent application No. 202422341891.9, filed on September 24, 2024, and entitled "An aerosol-generating device", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application belongs to the technical field of aerosol generation, and more particularly, relates to an aerosol-generating device. BACKGROUND

[0003] The statements herein are provided only to complement the background information of the present application and do not necessarily constitute the prior art.

[0004] A heat-not-burn aerosol-generating device is a product that uses the principle of electromagnetic induction heating to heat the substrate strip to generate aerosol for users to smoke. Among them, the principle of electromagnetic induction heating refers to using the high-frequency magnetic field of the excitation coil to generate eddy current to make the heating body generate heat, and then bake the substrate strip to generate aerosol.

[0005] The existing aerosol-generating device generally has the problems of long preheating time, small amount of smoke, and slow smoke speed, which adversely affects the user's experience. TECHNICAL PROBLEM

[0006] One of the purposes of the embodiments of the present application is to provide an aerosol-generating device, which aims to solve the problems of long preheating time, small amount of smoke, and slow smoke speed of the existing aerosol-generating device. TECHNICAL SOLUTION

[0007] To solve the above technical problems, the technical solution adopted by the embodiments of the present application is:

[0008] In a first aspect, an aerosol-generating device is provided, comprising a main shell, a magnetic induction heating assembly and a detachable substrate cartridge are arranged in the main shell;

[0009] The substrate cartridge comprises an outer shell, a substrate strip, a first reel and a second reel arranged in the outer shell, the substrate strip is at least partially wound on the first reel and the second reel, the first reel or the second reel is rotatable to drive the substrate strip to move between the first reel and the second reel, and the substrate strip is provided with a magnetic induction heating material.

[0010] The magnetic induction heating assembly comprises at least two magnetic induction coils, and the at least two magnetic induction coils are respectively arranged on both sides of the substrate strip between the first reel and the second reel along the thickness direction of the substrate strip.

[0011] In some embodiments, the substrate strip comprises a first substrate strip and a second substrate strip arranged in parallel and stacked, each of the first substrate strip and the second substrate strip comprises a magnetic induction heating material and a substrate layer arranged on the magnetic induction heating material, the substrate layer can be heated by the magnetic induction heating material and generate aerosol, and the substrate layer of the first substrate strip and the substrate layer of the second substrate strip are arranged away from each other.

[0012] In some embodiments, an insulating layer is further arranged between the first substrate strip and the second substrate strip.

[0013] In some embodiments, the material or density of the substrate layer of the first substrate strip and the substrate layer of the second substrate strip are different.

[0014] In some embodiments, the material and density of the substrate layer of the first substrate strip and the substrate layer of the second substrate strip are the same.

[0015] In some embodiments, the substrate strip comprises a magnetic induction heating material, a first substrate layer and a second substrate layer, and the magnetic induction heating material is sandwiched between the first substrate layer and the second substrate layer.

[0016] In some embodiments, at least two of the magnetic induction coils are symmetrically arranged on both sides of the layer thickness direction of the substrate strip.

[0017] In some embodiments, at least two of the magnetic induction coils are arranged on both sides of the layer thickness direction of the substrate strip, and at least one of the magnetic induction coils on one side of the layer thickness direction is arranged away from at least one of the magnetic induction coils on the other side of the layer thickness direction along the extension direction of the substrate strip.

[0018] In some embodiments, each of the magnetic induction coils is arranged away from each other in equal or unequal number.

[0019] In some embodiments, the space between the magnetic induction coils arranged on both sides of the substrate strip is a heating area.

[0020] The shell is provided with an air inlet and an air outlet, the substrate cartridge further comprises a first air channel arranged between the air inlet and the air outlet, the first air channel passes through the heating area, the extension direction of the first air channel is parallel to the moving direction of the substrate strip between the first reel and the second reel, and the air inlet and the air outlet are respectively located on both sides of the heating area.

[0021] In some embodiments, the shell of the substrate cartridge is divided into an atomization cavity and a containing cavity, the atomization cavity and the containing cavity are arranged along the width direction of the shell of the substrate cartridge, and the atomization cavity is in communication with the outside through the air outlet.

[0022] In some embodiments, the accommodating cavity is provided with a replacement opening on one side away from the atomization cavity.

[0023] In some embodiments, the space between the magnetic induction coils arranged on both sides of the substrate strip is a heating area.

[0024] The shell is provided with an air inlet and an air outlet, and the substrate box further comprises a first air channel, the first air channel passing through the heating area, and the air inlet and the air outlet being located on the same side of the heating area.

[0025] In some embodiments, the host shell is further provided with a suction nozzle in communication with the first air channel, and the air inlet and the air outlet are located on the side close to the suction nozzle. Advantages

[0026] The aerosol generating device provided by the embodiments of the present application has the advantages that: the aerosol generating device provided by the present application is provided with at least two magnetic induction coils, and the at least two magnetic induction coils are arranged on both sides of the substrate strip along the thickness direction of the substrate strip. The at least two magnetic induction coils can work simultaneously and form a superimposed magnetic field, which is beneficial to the rapid heating of the substrate strip, reduces the preheating time, increases the amount of smoke, and improves the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments or exemplary technical descriptions will be briefly introduced below. 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 creative labor.

[0028] Fig. 1 is a schematic diagram of the aerosol generating device provided by an embodiment of the present application;

[0029] Fig. 2 is a schematic diagram of the aerosol generating device provided by an embodiment of the present application, wherein a suction nozzle is arranged;

[0030] Fig. 3 is a schematic diagram of the combination of the substrate strip and the magnetic induction coil provided by an embodiment of the present application;

[0031] Fig. 4 is a schematic diagram of the substrate strip provided by another embodiment of the present application;

[0032] Fig. 5 is a schematic diagram of the magnetic induction coil provided by an embodiment of the present application;

[0033] Fig. 6 is a schematic diagram of the magnetic induction coil provided by another embodiment of the present application;

[0034] Fig. 7 is a schematic diagram of the magnetic induction coil provided by yet another embodiment of the present application. Embodiments of the present application

[0035] 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 intended to explain the present application and not to limit the present application.

[0036] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "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 a limitation on 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.

[0037] In order to illustrate the technical solutions provided by the present application, the following will be described in detail in combination with specific drawings and embodiments.

[0038] Please refer to FIGS. 1 to 4, the aerosol generating device provided by the embodiments of the present application comprises a main machine shell 100, and a magnetic induction heating assembly 200 and a detachably connected substrate cartridge 300 are arranged in the main machine shell 100.

[0039] The substrate cartridge 300 comprises an outer shell 301, a substrate strip 302, a first reel 303 and a second reel 304 arranged in the outer shell 301. The substrate strip 302 is at least partially wound on the first reel 303 and the second reel 304. The first reel 303 or the second reel 304 is rotatable to drive the substrate strip 302 to move between the first reel 303 and the second reel 304. The substrate strip 302 is provided with a magnetic induction heating material, for example, a magnetic induction heating layer 3021. The magnetic induction heating material can also be discrete particles, spaced apart sheet layers, etc.

[0040] The magnetic induction heating assembly 200 comprises at least two magnetic induction coils 201. The at least two magnetic induction coils 201 are arranged on both sides of the substrate strip 302 between the first reel 303 and the second reel 304 along the thickness direction of the substrate strip 302.

[0041] The aerosol generating device provided by the embodiment is provided with at least two magnetic induction coils 201, and the at least two magnetic induction coils 201 are respectively arranged on both sides of the substrate strip 302 along the thickness direction of the substrate strip 302. The at least two magnetic induction coils 201 can work simultaneously and form a superimposed magnetic field, which is beneficial to quickly heat the substrate strip 302, reduces the preheating time, increases the amount of smoke, and improves the user experience.

[0042] Generally, the main shell 100 can be a rectangular structure with a volume, for example, a cuboid structure with a height greater than a width.

[0043] In some embodiments, the generating device further comprises a power supply and control assembly 500, the substrate cartridge 300 is arranged in the upper space of the main shell 100, the top of the shell 301 of the substrate cartridge 300 is provided with an air outlet 101, and the power supply and control assembly 500 is arranged in the lower space of the main shell 100. Wherein, the height direction and the layer thickness direction are perpendicular, and the thickness direction can be understood as the width direction of the main shell 100.

[0044] The substrate cartridge 300 is arranged in the upper space, so that the magnetic induction heating assembly 200 and part of the substrate strip 302 are arranged between the air outlet 101 and the power supply and control assembly 500. The aerosol generated by heating and atomization of the substrate strip 302 can flow in the direction in which the power supply and control assembly 500 points to the air outlet 101. By designing the spatial positions of the power supply and control assembly 500, the air outlet 101, the magnetic induction heating assembly 200 and the substrate strip 302, the layout of the at least two magnetic induction coils 201 and the substrate strip 302 can be facilitated, and the flow path of the aerosol is smoother and conforms to the overall layout of the generating device.

[0045] For example, the power supply and control assembly 500 avoids the upper space of the main shell 100, so that the internal space of the shell 301 of the substrate cartridge 300 is sufficient for use. The two magnetic induction coils 201 arranged on both sides of the substrate strip 302 can be arranged along the width direction, the at least two magnetic induction coils 201 arranged on the same side of the substrate strip 302 can be arranged along the height direction, and the substrate strip 302 can have a certain extension length along the height direction, allowing the generated aerosol to flow to the air outlet 101 along the extension direction of the substrate strip 302.

[0046] The internal space of the shell 301 of the substrate cartridge 300 can be divided into an atomization cavity and a containing cavity, and the atomization cavity and the containing cavity are arranged along the width direction. The atomization cavity is in communication with the outside through the air outlet 101. The substrate strip 302 can be atomized and generate aerosol in the atomization cavity, and the aerosol is discharged through the air outlet 101 for the user to smoke.

[0047] The circumferential outer side of the first reel 303 is used to wind the substrate tape 302, and the substrate tape 302 can be unwound from the first reel 303, wound on the circumferential outer side of the second reel 304 after passing through the atomization cavity, that is, the substrate tape 302 before atomization is unwound from the first reel 303 and is wound by the second reel 304 after atomization.

[0048] Exemplarily, the two ends of the substrate tape 302 are wound on the outer circumferences of the first reel 303 and the second reel 304 respectively, and the rotation of the second reel 304 is controlled to drive the substrate tape 302 wound on the first reel 303 to pass through the atomization cavity and be wound on the second reel 304. The rotation direction of the second reel 304 can be clockwise or counterclockwise.

[0049] The unwinding refers to the process of peeling off the substrate along the radial direction of the winding substrate, so that the outer layer of the substrate and the inner layer of the substrate are peeled off. The substrate tape 302 is wound on the circumferential outer side of the first reel 303, and the substrate tape 302 can be unwound from the first reel 303, which refers to the process of peeling off the outer layer of the substrate tape 302 and the inner layer of the substrate tape 302.

[0050] The winding refers to the method of winding the continuous product by a winding drum or a reel. The substrate tape 302 is wound on the circumferential outer side of the second reel 304 after passing through the atomization cavity, and is wound by the second reel 304, that is, the process of winding into a roll.

[0051] The substrate cartridge is detachably arranged in the upper space of the main machine shell 100, and a replacement opening can be formed on the side of the accommodation cavity away from the atomization cavity. When the replacement opening is in a closed state, the substrate cartridge can be started to heat the substrate tape 302. When the replacement opening is in an open state, the substrate cartridge can be replaced, which can include but is not limited to replacing the substrate tape 302.

[0052] In some embodiments, the substrate tape 302 includes a first substrate tape 302a and a second substrate tape 302b arranged in parallel and stacked, and each of the first substrate tape 302a and the second substrate tape 302b includes a magnetic induction heating layer 3021 and a substrate layer 3022 arranged on the magnetic induction heating layer 3021. The substrate layer 3022 can be heated by the magnetic induction heating layer 3021 to generate aerosol, and the substrate layer 3022 of the first substrate tape 302a and the substrate layer 3022 of the second substrate tape 302b are arranged away from each other.

[0053] Each magnetic induction heating layer 3021 acts on the substrate layer 3022 stacked with it, so that each substrate layer 3022 is independently heated and atomized, further improving the smoking speed and smoking amount, and further improving the user's experience.

[0054] In some embodiments, an insulating layer 3023 is further arranged between the first substrate strip 302a and the second substrate strip 302b.

[0055] The magnetic induction heating layer 3021 on both sides is isolated by the insulating layer 3023, which further ensures that each magnetic induction heating layer 3021 can act on the substrate layer 3022 stacked with it respectively, prevents the heat from moving between the two magnetic induction heating layers 3021, and further prevents affecting the independent heating and atomization effect of each substrate layer 3022.

[0056] In some embodiments, the materials of the substrate layer 3022 of the first substrate strip 302a and the substrate layer 3022 of the second substrate strip 302b are different, or the densities are different.

[0057] The materials of the two substrate layers 3022 are the same or different, and the densities of the two substrate layers 3022 are the same or different.

[0058] On the one hand, the materials and densities of the two substrate layers 3022 are the same, so that the two substrate layers 3022 are heated at the same time by the magnetic induction coils 201 on both sides corresponding to the two substrate layers 3022 to improve the amount of smoke. On the other hand, the materials of the two substrate layers 3022 are different, which have different characteristic flavors and produce different mouthfeel when heated, thereby improving the richness of the smoke flavor. Alternatively, the materials of the two substrate layers 3022 are different, and the two substrate layers 3022 can also be heated at the same time by the magnetic induction coils 201 on both sides corresponding to the two substrate layers 3022 to improve the amount of smoke.

[0059] In some embodiments, the substrate strip 302 includes the magnetic induction heating layer 3021, the first substrate layer 3022, and the second substrate layer 3022, and the magnetic induction heating layer 3021 is sandwiched between the first substrate layer 3022 and the second substrate layer 3022.

[0060] The same magnetic induction heating layer 3021 acts on the substrate layers 3022 stacked with it on different sides, so that each substrate layer 3022 is independently heated and atomized, further improving the smoking speed and the amount of smoke, and further improving the user's experience.

[0061] Specifically, the substrate strip 302 is a flexible long strip structure with a certain width and thickness, but the length can be extended and bent according to actual conditions. The magnetic induction heating layer 3021 can be any strip layer that can withstand atomization temperature, has a certain flexibility, and can be unwound and wound, such as a metal strip layer, a graphite strip layer, or a strip layer formed by weaving metal wires, etc. The thickness of the magnetic induction heating layer 3021 can be between 0.005-0.2mm, and the two substrate strips 302 can be adhered to the two surfaces of the magnetic induction heating layer 3021.

[0062] In some embodiments, the at least two magnetic induction coils 201 are symmetrically arranged on both sides of the layer thickness direction of the substrate strip 302.

[0063] The at least two magnetic induction coils 201 are symmetrically arranged on both sides of the layer thickness direction of the substrate strip 302, so that the heating and atomization speeds of the two substrate layers 3022 at the same position are more consistent and faster, which is more conducive to rapid smoke generation and easier to achieve the purpose of instant smoking and instant stopping.

[0064] In some embodiments, the at least two magnetic induction coils 201 are arranged on both sides of the layer thickness direction of the substrate strip 302, and the at least one magnetic induction coil 201 located on one side of the layer thickness direction is arranged staggered along the extension direction of the substrate strip 302 with the at least one magnetic induction coil 201 located on the other side of the layer thickness direction.

[0065] On both sides of the layer thickness direction of the substrate strip 302, the magnetic induction coils 201 are arranged in equal or unequal numbers and staggered, each magnetic induction coil 201 corresponds to a high-temperature zone, and the resulting high-temperature zone ranges are also arranged staggered, which is conducive to increasing the total area of the high-temperature zone required for heating and atomization, so that the amount of smoke of the substrate layer 3022 in a unit of time is increased, and the user's experience is further improved.

[0066] The structures of the at least two magnetic induction coils 201 can be the same or different, for example, the magnetic induction coil 201 can adopt any one of the magnetic induction coils 201 in FIGS. 5 to 7.

[0067] Wherein, the structures of the magnetic induction coils 201 are the same, for example, the magnetic core and the coil are uniformly arranged, so that the magnetic field and the temperature field generated by each magnetic induction coil 201 are consistent, which can make the magnetic field strength and the heating capacity used for heating and atomization more enhanced and consistent, so that the heating and atomization speeds of the two substrate layers 3022 are more consistent and faster, which is more conducive to rapid smoke generation.

[0068] Wherein, the structures of the magnetic induction coils 201 are different, for example, at least one of the magnetic core and the coil is arranged differently, so that the magnetic fields and the temperature fields generated by different magnetic induction coils 201 are different. By heating the substrate layer 3022 with the different temperature fields, the taste levels of the aerosol obtained by atomization are more rich, which is conducive to stimulating various tobacco flavors, and further improving the user experience.

[0069] In some embodiments, the space between the magnetic induction coils 201 arranged on both sides of the substrate strip 302 is a heating area, which is a part of the internal space of the atomization chamber.

[0070] The shell 301 is provided with an air inlet 103 and an air outlet 101, and the substrate cartridge 300 further comprises a first air channel 102 arranged between the air inlet 103 and the air outlet 101, the first air channel 102 passing through the heating area, and the extension direction of the first air channel 102 is parallel to the moving direction of the substrate strip 302 between the first reel 303 and the second reel 304, and the air inlet 103 and the air outlet 101 are respectively located on the two sides of the heating area.

[0071] The air inlet 103 is provided for external airflow, and the airflow directly passes through the heating area during suction, which can drive the aerosol to smoothly reach the air outlet 101.

[0072] In some embodiments, the space between the magnetic induction coils 201 arranged on the two sides of the substrate strip 302 is the heating area, the shell 301 is provided with an air inlet 103 and an air outlet 101, and the substrate cartridge 300 further comprises a first air channel 102, the first air channel 102 passing through the heating area, and the air inlet 103 and the air outlet 101 are located on the same side of the heating area.

[0073] The air inlet 103 is provided for external airflow, and the airflow directly passes through the heating area during suction, which can drive the aerosol to smoothly reach the air outlet 101.

[0074] The first air channel 102 is provided with a through hole 104, the through hole 104 comprises a first through hole 1041 and a second through hole 1042, and the first through hole 1041 and the second through hole 1042 are both communicated with the air outlet 101 through the air outlet channel. Among them, the first through hole 1041 is adjacent to the magnetic induction heating assembly 200, the second through hole 1042 is away from the magnetic induction heating assembly 200, and the caliber of the first through hole 1041 is larger than that of the second through hole 1042.

[0075] Among them, the second through hole 1042 can be one or more. When the second through hole 1042 is multiple, the caliber of the first through hole 1041 is larger than the total caliber of the multiple second through holes 1042.

[0076] In this way, the first through hole 1041 closer to the magnetic induction heating assembly 200 is provided with a large caliber as the main channel of the aerosol, and the large caliber ensures the passing rate of large smoke. The second through hole 1042 with smaller caliber has higher airflow speed, which can more effectively suck away the remaining small amount of aerosol, thereby improving the utilization rate of the aerosol.

[0077] In some embodiments, the host shell 100 is further provided with a suction nozzle 400 connected with the first air channel 102, and the air inlet 103 and the air outlet 101 are located on the side close to the suction nozzle 400.

[0078] The filter device in the suction nozzle 400 can include filter cotton 401 and a filter core 402, which can filter impurities in the aerosol and lower the temperature of the aerosol, thereby ensuring the taste of the user.

[0079] The filter cotton 401 can be annularly arranged in the upper part of the air outlet channel near the air outlet 101, and has a central channel. The filter core 402 is arranged in the middle part, the cross section of the filter core 402 is consistent with the cross section of the air outlet channel, and the bottom end of the filter core 402 is flush with or higher than the topmost line of the second through hole 1042, so as to ensure the normal passage of the aerosol.

[0080] The above is only an optional embodiment of the present application and is not used to limit the present application. Various changes and modifications can be made by 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 the claims of the present application.

Claims

1. An aerosol generating device, comprising: a main housing having a magnetic induction heating assembly and a detachably connected substrate cartridge disposed therein; the substrate cartridge comprising a housing, a substrate strip, a first reel and a second reel disposed in the housing, the substrate strip being at least partially wound on the first reel and the second reel, the first reel or the second reel being rotatable to drive the substrate strip to move between the first reel and the second reel, the substrate strip comprising a magnetic induction heating material; and the magnetic induction heating assembly comprising at least two magnetic induction coils, the at least two magnetic induction coils being disposed on both sides of the substrate strip along a layer thickness direction of the substrate strip between the first reel and the second reel.

2. The aerosol generating device according to claim 1, wherein: the substrate strip comprises a first substrate strip and a second substrate strip arranged in parallel and stacked, each of the first substrate strip and the second substrate strip comprising a magnetic induction heating material and a substrate layer disposed on the magnetic induction heating material, the substrate layer being heatable by the magnetic induction heating material to generate aerosol, the substrate layer of the first substrate strip and the substrate layer of the second substrate strip being arranged away from each other; and an insulating layer is further disposed between the first substrate strip and the second substrate strip.

3. The aerosol generating device according to claim 2, wherein: the substrate layer of the first substrate strip and the substrate layer of the second substrate strip are different in material or density.

5. The aerosol generating device according to claim 2, wherein: the substrate layer of the first substrate strip and the substrate layer of the second substrate strip are the same in material and density.

6. The aerosol generating device according to claim 1, wherein: the substrate strip comprises the magnetic induction heating material, a first substrate layer and a second substrate layer, the magnetic induction heating material being sandwiched between the first substrate layer and the second substrate layer.

7. The aerosol generating device according to claim 1, wherein: the at least two magnetic induction coils are symmetrically arranged on both sides of the substrate strip along a layer thickness direction.

3. The aerosol-generating device of claim 2, wherein:

8. The aerosol generating device according to claim 1, wherein: the at least two magnetic induction coils are arranged on both sides of the substrate strip along a layer thickness direction, at least one magnetic induction coil on one side of the layer thickness direction and at least one magnetic induction coil on the other side of the layer thickness direction are staggered along an extension direction of the substrate strip.

4. The aerosol-generating device of claim 2, wherein:

9. The aerosol generating device according to claim 8, wherein: the magnetic induction coils are staggered in equal or unequal numbers.

10. The aerosol generating device according to claim 1, wherein: a space between the magnetic induction coils arranged on both sides of the substrate strip is a heating area; the housing is provided with an air inlet and an air outlet, the substrate cartridge further comprises a first air channel disposed between the air inlet and the air outlet, the first air channel passing through the heating area, the extension direction of the first air channel being parallel to the moving direction of the substrate strip between the first reel and the second reel, and the air inlet and the air outlet being respectively located on both sides of the heating area.

11. The aerosol generating device according to claim 10, wherein: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The housing of the substrate box is internally divided into an atomization cavity and a containing cavity, the atomization cavity and the containing cavity are arranged along the width direction of the housing of the substrate box, and the atomization cavity is in communication with the outside through the air outlet. 12.The aerosol generating device of claim 10, wherein: The containing cavity is provided with a replacement opening on the side away from the atomization cavity. 13.The aerosol generating device of claim 1, wherein: The space between the magnetic induction coils arranged on both sides of the substrate strip is a heating area; The housing is provided with an air inlet and an air outlet, and the substrate box further comprises a first air channel, the first air channel passes through the heating area, and the air inlet and the air outlet are located on the same side of the heating area. 14.The aerosol generating device of claim 13, wherein: The second through hole is provided in plurality, and the caliber of the first through hole is larger than the total caliber of the plurality of second through holes. 15.The aerosol generating device of claim 13, wherein: The main machine shell is further provided with a suction nozzle in communication with the first air channel, and the air inlet and the air outlet are located on the side close to the suction nozzle.

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