A multi-segment atomizing core and an aerosol generating device thereof

Abstract

The application discloses a multi-section atomizing core and an aerosol generating device thereof, the multi-section atomizing core is provided with at least two sections of connected tubular liquid guiding members in a vertically arranged air guiding and atomizing pipe, and the sum of the lengths of the at least two sections of tubular liquid guiding members is equal to the length of the air guiding and atomizing pipe, the air guiding and atomizing pipe of the application combines the atomizing pipe and the air guiding pipe, prolongs the length of the multi-section atomizing core, and further prolongs the length of the tubular liquid guiding member, the larger tubular liquid guiding member has better liquid locking capacity, can store more atomizing liquid and condensed liquid while guiding the liquid, and therefore, when the atomizing liquid introduced into the air guiding and atomizing pipe is too much and the condensed liquid is accumulated in the air guiding and atomizing pipe during use, the tubular liquid guiding member can absorb the too much atomizing liquid and the condensed liquid, prevents liquid leakage and liquid absorption from occurring, and improves the quality of the product.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerosol generating technology, in particular to a multi-section atomizing core and an aerosol generating device thereof. BACKGROUND

[0002] The aerosol generating device is a product that generates aerosol by heating the atomized liquid through an atomizer. In recent years, it has been widely and rapidly promoted in the domestic and foreign markets due to its convenience of use and changeable taste through the adjustment of the atomized liquid.

[0003] The general aerosol generating device on the market currently includes an atomizing core. A liquid inlet hole is formed on the atomizing core to connect with a liquid storage assembly, so as to introduce the atomized liquid into the atomizing core for heating. When too much atomized liquid is introduced into the atomizing core and the condensed liquid accumulates in the atomizing core and the air guide pipe during use, the phenomenon of liquid leakage and liquid absorption is likely to occur. SUMMARY

[0004] The purpose of the present application is to provide a multi-section atomizing core and an aerosol generating device thereof, aiming to solve the technical problem that the structure of the current atomizing core is prone to cause the phenomenon of liquid leakage and liquid absorption.

[0005] In order to solve the above problems, according to one aspect of the present application, the embodiment of the present application provides a multi-section atomizing core applied to an aerosol generating device. The multi-section atomizing core includes a vertically arranged air guide atomizing pipe, at least two sections of connected tubular liquid guide members arranged in the air guide atomizing pipe, the sum of the lengths of all the tubular liquid guide members being equal to the length of the air guide atomizing pipe, and a liquid absorption heating unit arranged in each tubular liquid guide member.

[0006] In some embodiments, the air guide atomizing pipe is provided with a liquid inlet hole, and the density of the tubular liquid guide members arranged in sequence along the axial direction of the air guide atomizing pipe and the outward direction of the radial direction of the liquid inlet hole gradually increases and decreases.

[0007] In some embodiments, the at least two sections of tubular liquid guide members include a first tubular liquid guide member and a second tubular liquid guide member. In the axial direction, the first tubular liquid guide member is arranged at the top of the second tubular liquid guide member, and the liquid absorption heating units are arranged in the first tubular liquid guide member and the second tubular liquid guide member. The two liquid absorption heating units are arranged at intervals.

[0008] In some embodiments, the liquid inlet hole is arranged opposite to the outer wall surface of the second tubular liquid guide member, and the density of the first tubular liquid guide member is less than that of the second tubular liquid guide member; or, the liquid inlet hole is arranged opposite to the outer wall surface of the first tubular liquid guide member, and the density of the first tubular liquid guide member is greater than that of the second tubular liquid guide member.

[0009] In some embodiments, the at least two tubular liquid guides further comprise a third tubular liquid guide, the third tubular liquid guide is arranged between the first tubular liquid guide and the second tubular liquid guide, the liquid inlet hole is arranged opposite to an outer wall surface of the third tubular liquid guide, and the first tubular liquid guide and the second tubular liquid guide have a density smaller than that of the third tubular liquid guide.

[0010] In some embodiments, the first tubular liquid guide has a density smaller than that of the second tubular liquid guide.

[0011] In some embodiments, the distance between the liquid suction and heating unit close to the liquid inlet hole and the center of the liquid inlet hole is H1, the distance between the liquid suction and heating unit close to the liquid inlet hole and its adjacent liquid suction and heating unit is H2, and H1 is greater than H2.

[0012] In some embodiments, the liquid suction and heating unit comprises cotton and a heating element, the cotton is fixedly arranged on the inner wall of the tubular liquid guide, and the heating element is arranged in the cotton.

[0013] According to another aspect of the present application, the embodiments of the present application further provide an aerosol generating device, which comprises a housing, a liquid storage assembly arranged in the housing, a suction nozzle configured on the top of the housing, and a multi-section atomizing core as described above, the top of the gas guiding and atomizing pipe is communicated with the suction nozzle, the liquid storage assembly comprises an inner shell and a sealing member arranged on the inner shell and away from the mouth of the suction nozzle, and the gas guiding and atomizing pipe is inserted on the sealing member.

[0014] In some embodiments, when the multi-section atomizing core comprises the first tubular liquid guide and the second tubular liquid guide, the liquid suction and heating unit in the first tubular liquid guide is a first liquid suction and heating unit, the liquid suction and heating unit in the second tubular liquid guide is a second liquid suction and heating unit, the aerosol generating device further comprises an electric core and a control board, the second liquid suction and heating unit has a single-shot pin, a fixed pin and a double-shot pin, the double-shot pin and the fixed pin are both connected with the first liquid suction and heating unit, and the control board can control the single-shot pin and the fixed pin to be conducted with the electric core; or, the control board can control the double-shot pin and the fixed pin to be conducted with the electric core.

[0015] Compared with the prior art, the multi-section atomizing core of the present application has at least the following beneficial effects:

[0016] The embodiment of the present application discloses a multi-section atomizing core, at least two connected tubular liquid guides are arranged in the vertically arranged air guide atomizing pipe, and the sum of the lengths of the at least two tubular liquid guides is equal to the length of the air guide atomizing pipe. The air guide atomizing pipe of the present application combines the atomizing pipe and the air guide pipe, prolongs the length of the multi-section atomizing core, and further prolongs the length of the tubular liquid guide. The larger tubular liquid guide has better liquid locking capacity, so that the tubular liquid guide can store more atomizing liquid and condensed liquid while guiding the liquid. Therefore, when too much atomizing liquid is introduced into the air guide atomizing pipe and condensed liquid accumulates in the air guide atomizing pipe during use, the tubular liquid guide can absorb the excess atomizing liquid and condensed liquid, prevent liquid leakage and liquid absorption, and improve the quality of the product.

[0017] In another aspect, the aerosol generating device provided by the present application is designed based on the above-mentioned multi-section atomizing core, and the beneficial effects thereof are described above. Here, they will not be described again.

[0018] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, and to implement the content of the description, the following will describe the preferred embodiments of the present application in detail with the help of the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0020] Figure 1 The cross-sectional view of the multi-section atomizing core provided by the embodiment of the present application;

[0021] Figure 2 The cross-sectional view of the aerosol generating device provided by the embodiment of the present application.

[0022] Explanation of reference signs:

[0023] 11, air guide atomizing pipe; 111, liquid inlet hole; 12, tubular liquid guide; 121, first tubular liquid guide; 122, second tubular liquid guide; 13, liquid absorbing and heating unit; 131, inner cotton; 132, heating element; 2, outer shell; 21, suction nozzle; 22, inner shell; 23, sealing element; 231, air guide tubular extension; 31, single-shot pin; 32, fixed pin; 33, double-shot pin. DETAILED DESCRIPTION

[0024] For further illustrating the technical means and effects taken by the present application to achieve the predetermined inventive objectives, the following will describe in detail the specific implementation, structure, features and effects according to the present application in combination with the drawings and preferred embodiments. In the following description, different "an embodiment" or "embodiments" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0025] In the description of the present application, it should be noted that the terms "first", "second", and the like in the description of the present application and claims and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence; the terms "vertical", "horizontal", "longitudinal", "front", "back", "left", "right", "up", "down", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not mean that the devices or elements referred to must have a particular orientation or position, and therefore cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Embodiment 1

[0028] As Figures 1-2 shown, the embodiment of the present application provides a multi-section atomizing core applied to an aerosol generating device, which includes a vertically arranged air guide atomizing pipe 11, at least two connected tubular liquid guide members 12 arranged in the air guide atomizing pipe 11, the sum of the lengths of all the tubular liquid guide members 12 is equal to the length of the air guide atomizing pipe 11, and a liquid absorbing and heating unit 13 is arranged in each tubular liquid guide member 12.

[0029] In the embodiment, when the length direction of the shell 2 of the aerosol generating device is vertically arranged, the air guide atomization pipe 11 is vertically arranged, at least two sections of the tubular liquid guide 12 are arranged in the vertically arranged air guide atomization pipe 11, the at least two sections of the tubular liquid guide 12 are sequentially connected from top to bottom in the air guide atomization pipe 11, and the sum of the lengths of the at least two sections of the tubular liquid guide 12 is equal to the length of the air guide atomization pipe 11. The tubular liquid guide 12 can be a tubular structure with liquid guide apertures, and can be liquid guide cotton, porous ceramics, etc. The air guide atomization pipe 11 of the embodiment combines the atomization pipe and the air guide pipe, prolongs the length of the multi-section atomization core, and further prolongs the length of the tubular liquid guide 12. The larger tubular liquid guide 12 has better liquid locking capacity, can store more atomization liquid and condensed liquid while guiding the liquid, and thus can absorb the excessive atomization liquid and condensed liquid when the atomization liquid introduced into the air guide atomization pipe 11 is excessive and the condensed liquid accumulates in the air guide atomization pipe 11 during use, preventing liquid leakage and liquid absorption, and improving the quality of the product.

[0030] Each tubular liquid guide 12 is provided with a liquid absorption heating unit 13. The liquid absorption heating unit 13 heats the atomization liquid in each tubular liquid guide 12 to generate aerosol for the user to smoke. The plurality of liquid absorption heating units 13 work simultaneously to increase the burst of smoke.

[0031] In some embodiments, the air guide atomization pipe 11 is provided with a liquid inlet hole 111, and the density of the tubular liquid guides 12 arranged in sequence along the axial direction of the air guide atomization pipe 11 and the outward radial direction of the liquid inlet hole 111 gradually decreases.

[0032] In the embodiment, the air guide atomization pipe 11 is provided with a liquid inlet hole 111, and the liquid inlet hole 111 is used to guide the atomization liquid into the air guide atomization pipe 11. The smaller the density of the tubular liquid guide 12, the more the liquid guide apertures in the tubular liquid guide 12, and the stronger the liquid guiding capacity. The density of the tubular liquid guides 12 arranged in sequence along the axial direction of the air guide atomization pipe 11 and the outward radial direction of the liquid inlet hole 111 gradually decreases, so that the tubular liquid guide 12 far from the liquid inlet hole 111 has stronger liquid guiding capacity, preventing insufficient liquid supply due to the long distance from the liquid inlet hole 111, and causing dry burning and burnt core.

[0033] In some embodiments, the at least two sections of the tubular liquid guide 12 include a first tubular liquid guide 121 and a second tubular liquid guide 122. In the axial direction, the first tubular liquid guide 121 is arranged at the top of the second tubular liquid guide 122, and the first tubular liquid guide 121 and the second tubular liquid guide 122 are both provided with a liquid absorption heating unit 13, and the two liquid absorption heating units 13 are arranged at intervals.

[0034] In the embodiment, by spacing the two liquid absorbing and heating units 13 in the first tubular liquid guide 121 and the second tubular liquid guide 122, the two liquid absorbing and heating units 13 can be prevented from being bonded together for heating, which can easily cause local high temperature and dry burning and core burning due to insufficient liquid supply.

[0035] In some embodiments, the liquid inlet hole 111 is arranged opposite to the outer wall surface of the second tubular liquid guide 122, and the density of the first tubular liquid guide 121 is less than that of the second tubular liquid guide 122.

[0036] In the embodiment, since the liquid inlet hole 111 is arranged opposite to the outer wall surface of the second tubular liquid guide 122, i.e., the liquid inlet hole 111 is opposite to the outer wall surface of the second tubular liquid guide 122, the density of the first tubular liquid guide 121 is designed to be less than that of the second tubular liquid guide 122, which can prevent the dry burning and core burning due to insufficient liquid supply caused by the long distance between the first tubular liquid guide 121 and the liquid inlet hole 111; in the embodiment, the density of the first tubular liquid guide 121 can be 0.005 g / m 3 , and the density of the second tubular liquid guide 122 can be 0.007 g / m 3 .

[0037] In addition, the density difference between the first tubular liquid guide 121 and the second tubular liquid guide 122 can be between 0.0015 and 0.003.

[0038] In some embodiments, the liquid inlet hole 111 is arranged opposite to the outer wall surface of the first tubular liquid guide 121, and the density of the first tubular liquid guide 121 is greater than that of the second tubular liquid guide 122.

[0039] In the embodiment, since the liquid inlet hole 111 is arranged opposite to the outer wall surface of the first tubular liquid guide 121, the density of the first tubular liquid guide 121 is designed to be greater than that of the second tubular liquid guide 122, which can prevent the dry burning and core burning due to insufficient liquid supply caused by the long distance between the second tubular liquid guide 122 and the liquid inlet hole 111; in the embodiment, the density of the second tubular liquid guide 122 can be 0.004 g / m 3 , and the density of the first tubular liquid guide 121 can be 0.008 g / m 3 .

[0040] In some embodiments, the at least two tubular liquid guides 12 further comprise a third tubular liquid guide, the third tubular liquid guide is arranged between the first tubular liquid guide 121 and the second tubular liquid guide 122, the liquid inlet hole 111 is arranged opposite to the outer wall surface of the third tubular liquid guide, and the densities of the first tubular liquid guide 121 and the second tubular liquid guide 122 are both less than that of the third tubular liquid guide.

[0041] In the embodiment, since the third tubular liquid guide is arranged between the first tubular liquid guide 121 and the second tubular liquid guide 122, and the liquid inlet hole 111 is arranged opposite to the outer wall surface of the third tubular liquid guide, the density of the first tubular liquid guide 121 and the second tubular liquid guide 122 is designed to be less than the density of the third tubular liquid guide, so that the phenomenon of dry burning and paste core caused by insufficient liquid supply due to the long distance between the first tubular liquid guide 121 and the second tubular liquid guide 122 and the liquid inlet hole 111 can be prevented. The density of the third tubular liquid guide in the embodiment can be 0.005 g / m3, and the density of the first tubular liquid guide 121 and the second tubular liquid guide 122 can be 0.007 g / m3.

[0042] In some embodiments, the density of the first tubular liquid guide 121 is less than the density of the second tubular liquid guide 122.

[0043] In the embodiment, since the first tubular liquid guide 121 is located above the second tubular liquid guide 122, under the action of gravity, the second tubular liquid guide 122 can obtain more atomized liquid when the densities of the first tubular liquid guide 121 and the second tubular liquid guide 122 are the same. In order to make the liquid supply more balanced, the density of the first tubular liquid guide 121 can be designed to be less than the density of the second tubular liquid guide 122, so that the liquid supply can be more balanced, and the phenomenon of dry burning and paste core caused by insufficient liquid supply can be prevented. The density of the third tubular liquid guide in the embodiment can be 0.005 g / m3, the density of the first tubular liquid guide 121 can be 0.006 g / m3, and the density of the second tubular liquid guide 122 can be 0.007 g / m3.

[0044] In some embodiments, the distance between the liquid suction heating unit 13 close to the liquid inlet hole 111 and the center of the liquid inlet hole 111 is H1, and the distance between the liquid suction heating unit 13 close to the liquid inlet hole 111 and the adjacent liquid suction heating unit 13 is H2, H1 is greater than H2. In the embodiment, the distance between the liquid suction heating unit 13 in different tubular liquid guides 12 and the liquid inlet hole 111 can be adjusted by adjusting the specific values of H1 and H2, so as to adjust the liquid supply speed of different liquid suction heating units 13, and finally adjust the suction feeling. Different suction feelings can be obtained, and H1 is greater than H2, so that the liquid suction heating unit 13 close to the liquid inlet hole 111 and the adjacent liquid suction heating unit 13 can obtain sufficient atomized liquid, and the phenomenon of dry burning can be prevented. At the same time, a better suction feeling can be obtained. The specific values of H1 and H2 can be determined according to actual needs.

[0045] In some embodiments, the liquid absorbing and heating unit 13 comprises an inner cotton 131 fixedly arranged on the inner wall of the tubular liquid guiding member 12 and a heating member 132 arranged in the inner cotton 131, and the aerosol is generated by heating the atomized liquid on the inner cotton 131 by the heating member 132.

[0046] The distance of the heating member 132 close to the liquid inlet hole 111 is H3, and the distance of the heating member 132 away from the liquid inlet hole 111 is H4, H3=H4, which can prevent the dry burning phenomenon from occurring and at the same time can obtain a better suction taste.

[0047] Embodiment 2

[0048] The embodiment of the present application also provides an aerosol generating device, which comprises a shell 2, a liquid storage assembly arranged in the shell 2, a suction nozzle 21 arranged at the top of the shell 2, and the multi-section atomizing core of the embodiment 1, the top of the gas guiding and atomizing pipe 11 is communicated with the suction nozzle 21, the liquid storage assembly comprises an inner shell 22 and a sealing member 23 arranged on the inner shell 22 and away from the mouth of the suction nozzle 21, the gas guiding and atomizing pipe 11 is inserted on the sealing member 23, and specifically, the gas guiding and atomizing pipe 11 is arranged in the inner shell 22 of the liquid storage assembly, therefore, the liquid inlet hole 111 on the gas guiding and atomizing pipe 11 can directly guide the atomized liquid in the inner shell 22 of the liquid storage assembly into the gas guiding and atomizing pipe 11, the aerosol can be guided to the suction nozzle 21 through the communication between the gas guiding and atomizing pipe 11 and the suction nozzle 21 for the user to smoke, and the liquid storage assembly encloses the liquid storage space of the atomized liquid through the inner shell 22 and the sealing member 23.

[0049] In some embodiments, when the multi-section atomizing core comprises a first tubular liquid guiding member 121 and a second tubular liquid guiding member 122, the liquid absorbing and heating unit 13 in the first tubular liquid guiding member 121 is a first liquid absorbing and heating unit, the liquid absorbing and heating unit 13 in the second tubular liquid guiding member 122 is a second liquid absorbing and heating unit, the aerosol generating device further comprises an electric core and a control board, the second liquid absorbing and heating unit has a single-shot pin 31, a fixed pin 32 and a double-shot pin 33, the double-shot pin 33 and the fixed pin 32 are connected with the first liquid absorbing and heating unit, and the control board can control the single-shot pin 31 and the fixed pin 32 to be conducted with the electric core; or, the control board can control the double-shot pin 33 and the fixed pin 32 to be conducted with the electric core.

[0050] In the embodiment, the control board can control the single-shot pin 31 and the fixed pin 32 to be in conduction with the battery cell; or, the control board can control the double-shot pin 33 and the fixed pin 32 to be in conduction with the battery cell, which is generally a single-shot heating mode of the single liquid suction heating unit 13 at the beginning of suction, and can be switched to a double-shot or multi-shot heating mode of simultaneous working of the first liquid suction heating unit and the second liquid suction heating unit after 5-10 times of suction, and the 5-10 times of suction can be set in advance, and the switching between the single-shot heating mode and the double-shot or multi-shot heating mode is realized by the control board, as shown in Figure 1 Since the second liquid suction heating unit is relatively close to the liquid inlet hole 111, the second liquid suction heating unit can be started to heat at the beginning of suction, and can be switched to the simultaneous working of the first liquid suction heating unit and the second liquid suction heating unit after 5-10 times of suction, and the dry burning phenomenon caused by insufficient supply of atomized liquid at the beginning of use can be avoided, and a better suction taste can be obtained.

[0051] In some embodiments, the sealing member 23 is configured with a gas guide tubular extension 231 extending into the gas guide atomization pipe 11 away from the mouth of the suction nozzle 21, and a cavity can be formed at the bottom of the gas guide atomization pipe 11, the tubular liquid guide member 12 at the bottom of the gas guide atomization pipe 11 is at least partially clamped between the gas guide tubular extension 231 and the gas guide atomization pipe 11, the leakage of the atomized liquid from the bottom of the gas guide atomization pipe 11 is prevented by the cavity, and the liquid suction heating unit 13 in the tubular liquid guide member 12 at the bottom of the gas guide atomization pipe 11 is arranged at the top of the gas guide tubular extension 231, and the liquid suction heating unit 13 in the tubular liquid guide member 12 at the bottom of the gas guide atomization pipe 11 is fixed by the top of the gas guide tubular extension 231.

[0052] In summary, those skilled in the art can easily understand that the above-mentioned advantageous technical features can be freely combined and superimposed without conflict.

[0053] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-mentioned devices, apparatuses and units can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0054] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A multi-segment atomizing core applied to an aerosol generating device, characterized in that: The multi-section atomizing core comprises a vertically arranged air guide atomizing pipe, at least two sections of connected tubular liquid guides arranged in the air guide atomizing pipe, the sum of the lengths of all the tubular liquid guides being equal to the length of the air guide atomizing pipe, and a liquid absorbing and heating unit arranged in each tubular liquid guide; each liquid absorbing and heating unit can work simultaneously or a single liquid absorbing and heating unit can heat alone. The air guide atomizing pipe is provided with a liquid inlet hole, and the density of the tubular liquid guides arranged in the air guide atomizing pipe along the axial direction and the outward radial direction of the liquid inlet hole gradually decreases. The at least two sections of tubular liquid guides comprise a first tubular liquid guide and a second tubular liquid guide, the first tubular liquid guide being arranged at the top of the second tubular liquid guide along the axial direction, the liquid absorbing and heating units being arranged in the first tubular liquid guide and the second tubular liquid guide, and the two liquid absorbing and heating units being arranged at intervals. The liquid inlet hole is arranged opposite to the outer wall surface of the second tubular liquid guide, and the density of the first tubular liquid guide is smaller than that of the second tubular liquid guide.

2. The multi-segmented atomizer wick of Claim 1, wherein, The distance between the liquid absorbing and heating unit close to the liquid inlet hole and the center of the liquid inlet hole is H1, and the distance between the liquid absorbing and heating unit close to the liquid inlet hole and its adjacent liquid absorbing and heating unit is H2, H1 being greater than H2.

3. The multi-segmented atomizer wick of claim 2, wherein, The liquid absorbing and heating unit comprises inner cotton and a heating element, the inner cotton being fixedly arranged on the inner wall of the tubular liquid guide, and the heating element being arranged in the inner cotton.

4. An aerosol-generating device comprising: The aerosol generating device comprises a shell, a liquid storage assembly arranged in the shell, a suction nozzle configured at the top of the shell, and the multi-section atomizing core according to any one of claims 1-3, the top of the air guide atomizing pipe being communicated with the suction nozzle, the liquid storage assembly comprising an inner shell and a sealing element arranged on the inner shell away from the port of the suction nozzle, and the air guide atomizing pipe being inserted in the sealing element.

5. The aerosol-generating device of claim 4, wherein, When the multi-section atomizing core comprises a first tubular liquid guide and a second tubular liquid guide, the liquid absorbing and heating unit in the first tubular liquid guide is a first liquid absorbing and heating unit, the liquid absorbing and heating unit in the second tubular liquid guide is a second liquid absorbing and heating unit, the aerosol generating device further comprises an electric core and a control board, the second liquid absorbing and heating unit has a single-shot pin, a fixed pin and a double-shot pin, the double-shot pin and the fixed pin are connected with the first liquid absorbing and heating unit, and the control board can control the single-shot pin and the fixed pin to be conducted with the electric core; or, the control board can control the double-shot pin and the fixed pin to be conducted with the electric core.

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