CN216568340U - Inner support bracket, aerosol generating device and aerosol-forming substrate - Google Patents

Abstract

The utility model relates to an inner support bracket, an aerosol generating device and an aerosol forming substrate. An accommodating cavity for accommodating aerosol-forming substrates is formed at an opening at the top end of the supporting sleeve, and a through hole communicated with the accommodating cavity is formed at the bottom end of the supporting sleeve; the aerosol generating device avoids the air inlet structure arranged on the bottom wall of the supporting sleeve by arranging the air inlet hole communicated with the accommodating cavity on the side wall of the middle part of the supporting sleeve, thereby avoiding the possibility of falling of substances such as tobacco shreds and particles of matrix formed by excessive aerosol and keeping the inside clean; and the air current gets into from the middle part of aerosol formation substrate and exports after mixing with the aerosol that produces, has avoided the regional that generates heat through the heat-generating body to reduce the air current temperature that the user absorbed, reduced the heat loss of heat-generating body simultaneously, improved heat utilization efficiency, consequently, reduced the temperature requirement that generates heat to the heat-generating body, had energy-conserving power saving's effect.

Description

Inner support bracket, aerosol generating device and aerosol-forming substrate

Technical Field

The utility model belongs to the technical field of electronic atomization, and particularly relates to an inner support bracket, an aerosol generating device and an aerosol forming substrate.

Background

In the existing aerosol generating device which is not combusted by heating, the air inlet mode of the aerosol forming substrate is usually air inlet from the end surface of the bottom of the aerosol forming substrate, so that an air inlet hole needs to be arranged at the bottom end of an inner support bracket for supporting and fixing the aerosol forming substrate, and a heating element is also inserted from the bottom end of the aerosol forming substrate, so that some matters such as tobacco shreds, particles and the like of the aerosol forming substrate fall into the bottom area of the inner support bracket, and the condition that the aerosol forming substrate is difficult to clean is caused; and because the output airflow drawn into the mouth of the consumer is warmer as a result of the airflow entering from the bottom of the aerosol-forming substrate and passing through the heat-generating region of the heat-generating body during draw, it is necessary to provide a longer aerosol-forming substrate or other filtering structure to reduce the temperature of the output airflow, resulting in an increased size or a more complex structure of the aerosol-forming substrate.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to address, at least to some extent, the deficiencies of the prior art and to provide an inner support bracket, an aerosol generating device and an aerosol-forming substrate.

In order to achieve the above object, the present invention provides an inner support bracket, which is applied to an aerosol generating device, and includes a support sleeve, wherein an opening at a top end of the support sleeve forms an accommodation cavity for accommodating an aerosol-forming substrate, a through hole communicated with the accommodation cavity is formed at a bottom end of the support sleeve, the through hole is used for inserting a heating element into the accommodation cavity, and an air inlet communicated with the accommodation cavity is formed on a side wall at a middle portion of the support sleeve.

Optionally, the inner support bracket further comprises an outer sleeve sleeved outside the support sleeve, the support sleeve is connected with the top end of the outer sleeve, an annular airflow cavity with an opening at the lower end is formed between the outer wall of the support sleeve and the inner wall of the outer sleeve, and the annular airflow cavity is communicated with the air inlet.

Optionally, the lower end periphery of the outer sleeve is bent outwards to form a connecting part with a U-shaped cross section.

Optionally, the top end of the accommodating cavity is flared outwards to form a mounting step.

Optionally, the shape of the through-hole is adapted to the cross-sectional shape of the heat-generating body.

Optionally, the aerosol-forming substrate is a cylinder, the receiving cavity having a bore diameter greater than the outer diameter of the aerosol-forming substrate; the lower end of the housing cavity is tapered to form a clamping portion, and the aperture of the clamping portion is smaller than the outer diameter of the aerosol-forming substrate.

Optionally, the number of the air inlet holes is multiple, and the number of the air inlet holes is uniformly distributed around the central axis of the support sleeve.

The utility model also provides an aerosol generating device which comprises the inner support bracket.

Optionally, the portable electronic device further comprises a housing, and a control circuit board, a power supply and a heating assembly which are arranged in the housing, wherein the inner support bracket is arranged in the housing, and the housing is provided with an insertion hole correspondingly communicated with the top end opening of the accommodating cavity; the control circuit board is respectively electrically connected with the power supply and the heating component, the heating component comprises a heating element at least partially inserted into the accommodating cavity through the through hole, and the heating element is used for heating the aerosol forming substrate accommodated in the accommodating cavity to generate aerosol for sucking.

Optionally, the outer shell comprises an upper shell and a lower shell which are detachably connected with each other, the insertion hole is formed in the top end of the upper shell, and the inner support bracket is arranged in the upper shell; the control circuit board, power supply and heating element all locate in the casing down, heating element is fixed in the upper end of last casing, just the upper end of heating element passes through the through hole of support sleeve bottom inserts accept in the chamber.

Optionally, an insertion cavity is formed at an opening at the upper end of the lower shell, and the lower end of the heating element is fixed at the bottom of the insertion cavity; the lower end of the supporting sleeve protrudes out of the lower end of the upper shell, and the protruding portion of the supporting sleeve is detachably inserted into the inserting cavity.

Optionally, the diapire in grafting chamber is followed the protruding guide sleeve that is formed with of grafting chamber direction, the heat-generating body is located inside the guide sleeve, works as go up the casing with when the casing butt joint down, the lower extreme of support sleeve inserts to in the guide sleeve.

Optionally, a first magnetic part is fixed on the outer side of the supporting sleeve, a second magnetic part is arranged at the bottom of the inserting cavity, and the upper shell and the lower shell are connected with each other in a magnetic attraction mode through the mutual matching of the first magnetic part and the second magnetic part.

The utility model also provides an aerosol-forming substrate, which is applied to the aerosol generating device, wherein the middle part of the aerosol-forming substrate is provided with a vent hole.

According to the aerosol generating device, the air inlet hole is formed in the side wall of the middle part of the supporting sleeve, so that an air inlet structure is prevented from being formed in the bottom wall of the supporting sleeve, the possibility that too much aerosol forms substances such as tobacco shreds and particles of a matrix to fall is avoided, and the interior is kept clean; and the air current gets into from the middle part of aerosol formation substrate and exports after mixing with the aerosol that produces, has avoided the regional that generates heat through the heat-generating body to reduce the air current temperature that the user absorbed, reduced the heat loss of heat-generating body simultaneously, improved heat utilization efficiency, consequently, reduced the temperature requirement that generates heat to the heat-generating body, had energy-conserving power saving's effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of an aerosol generating device according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a cross-sectional view of an embodiment of the inner support bracket of the present invention;

FIG. 4 is a schematic structural view of the inner bracket assembly of the present invention assembled to the upper housing;

FIG. 5 is an enlarged view of portion A of FIG. 1;

description of the main elements:

100. an aerosol-forming substrate; 101. a vent hole;

10. an inner support bracket; 11. a support sleeve; 111. an accommodating cavity; 112. a through hole; 113. an air inlet; 114. mounting a step; 12. an outer sleeve; 13. an annular airflow chamber; 14. a connecting portion;

20. a housing; 21. an upper housing; 211. an insertion hole; 212. sleeving a pipe; 22. a lower housing; 221. an insertion cavity;

30. a heat generating component; 31. a heating element; 32. a fixed seat; 33. an upper bracket; 331. a guide sleeve; 34. a lower bracket; 35. a seal member;

40. a control circuit board; 50. a power supply; 60. a fixed mount; 70. a heat-insulating aluminum cover; 81. a first magnetic member; 82. a second magnetic member.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of protection of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 and fig. 2, an aerosol generating device according to an embodiment of the present invention includes a housing 20, and a control circuit board 40, a power supply 50, a heating element 30 and an inner support bracket 10 which are disposed in the housing 20, where the control circuit board 40 is electrically connected to the power supply 50 and the heating element 30 respectively, and is used to control the power supply 50 to turn on or off the heating element 30; in this embodiment, the power supply 50 is a rechargeable power supply, and the housing 20 is provided with a charging interface for charging the power supply 50.

As shown in fig. 3 and 4, the inner holder 10 at least includes a supporting sleeve 11, a receiving cavity 111 for receiving the aerosol-forming substrate 100 is formed at an opening of a top end of the supporting sleeve 11, an insertion hole 211 correspondingly communicating with the opening of the top end of the receiving cavity 111 is formed in the outer shell 20, the aerosol-forming substrate 100 can be received in the receiving cavity 111 through the insertion hole 211, and a lower end of the aerosol-forming substrate 100 is supported and fixed by a bottom end of the supporting sleeve 11.

The bottom end of the supporting sleeve 11 is a closed end and is provided with a through hole 112 communicated with the accommodating cavity 111, the heating component 30 comprises a heating element 31 of which the upper end part is inserted into the accommodating cavity 111 through the through hole 112, the aerosol-forming substrate 100 is a columnar aerosol-generating product made of materials such as tobacco shreds, tobacco plant particles, plant fragments or tobacco paste, and the like, the cross section of the accommodating cavity 111 is matched with the cross section of the aerosol-forming substrate 100, so that the through hole 112 can be closed when the heating element 31 is inserted into the accommodating cavity 111; preferably, the receiving cavity 111 is configured to be cylindrical, but in other embodiments, an elliptic cylinder or a regular prism structure may be used. When the aerosol-forming substrate 100 is inserted into the receiving cavity 111, the part of the heating element 31 within the receiving cavity 111 is inserted into the aerosol-forming substrate 100 from the bottom of the aerosol-forming substrate 100, and when the heating element 31 generates heat, the aerosol-forming substrate 100 can be heated and atomized to produce an aerosol for inhalation.

An air inlet hole 113 communicated with the containing cavity 111 is formed in the side wall of the middle of the supporting sleeve 11, correspondingly, a vent hole 101 is formed in the middle of the aerosol-forming substrate 100, preferably, when the aerosol-forming substrate 100 is inserted into the containing cavity 111, the air inlet hole 113 on the supporting sleeve 11 is communicated with the vent hole 101 on the aerosol-forming substrate 100, and the vent hole 101 is positioned above the heating element 31; it will be appreciated that the housing 20 has an air inlet passage therein which communicates with the outside air, and the air inlet holes 113 of the support sleeve 11 communicate with the air inlet passage, so that when a user draws against the upper end of the aerosol-forming substrate 100 (i.e. the end remote from the heat-generating body 31), the outside air passes through the air inlet passage, the air inlet holes 113 and the vent holes 101 in order into the aerosol-forming substrate 100, mixes with the aerosol generated when the heat-generating body 31 is heated, and is then inhaled by the user.

In the aerosol generating device of the embodiment, the air inlet 113 is formed in the side wall of the middle part of the supporting sleeve 11, so that an air inlet structure is prevented from being formed in the bottom wall of the supporting sleeve 11, the possibility that too much matters such as tobacco shreds and particles of the aerosol forming substrate 100 fall off is avoided, and the inside is kept clean; and the air current enters from the middle of the aerosol-forming substrate 100 and is output after being mixed with the generated aerosol, so that the heating area passing through the heating body 31 is avoided, the temperature of the air current sucked by a user is reduced, the heat loss of the heating body 31 is reduced, and the heat utilization efficiency is improved, so that the heating temperature requirement on the heating body 31 is reduced, and the energy-saving and power-saving effects are achieved.

In one embodiment, the outer case 20 includes an upper case 21 and a lower case 22 detachably coupled to each other, an insertion hole 211 is opened at a top end of the upper case 21, and the inner bracket 10 is disposed in the upper case 21; the control circuit board 40, the power supply 50 and the heating element 30 are all installed in the lower casing 22 through a fixing frame 60, and the heating element 30 is fixed in the upper end of the upper casing 21, when the upper casing 21 is inserted and assembled on the lower casing 22, the upper end of the heating element 31 is inserted into the receiving cavity 111 through the through hole 112 at the bottom end of the supporting sleeve 11.

Specifically, the heating element 30 further includes a fixing base 32, an upper bracket 33 and a lower bracket 34, the lower end of the heating element 31 is fixed in the fixing base 32, the lower bracket 34 is sleeved outside the fixing base 32, the upper bracket 33 is fixed on the fixing frame 60 by screws or fasteners, and the lower bracket 34 and the fixing base 32 are clamped and positioned between the upper bracket 33 and the fixing frame 60, so that the whole heating element 30 is fixed on the top end of the fixing frame 60.

The lower casing 22 is further provided therein with a heat insulation aluminum cover 70, the heat insulation aluminum cover 70 is fixed on one side of the fixing frame 60, the power supply 50 is fixed between the fixing frame 60 and the heat insulation aluminum cover 70, and the control circuit board 40 is fixed on the other side of the fixing frame 60 opposite to the fixed power supply, so that the heat transfer between the power supply 50 and the control circuit board 40 is reduced by the fixing frame 60, and the heat transfer from the power supply 50 to the lower casing 22 is reduced by the heat insulation aluminum cover 70.

Wherein, still centre gripping is fixed with sealing member 35 between upper bracket 33 and the fixing base 32, and the upper end of heat-generating body 31 is worn out from this sealing member 35, and the outside of heat-generating body 31 and sealing member 35 are in encapsulated situation promptly to guarantee the airtight performance of air current passageway when sucking, and can avoid on the support sleeve 11 a small amount of matters such as the pipe tobacco that drop, granule to enter into the space below fixing base 32.

In one embodiment, the inner bracket 10 further comprises an outer sleeve 12 sleeved outside the supporting sleeve 11, the supporting sleeve 11 is connected with the top end of the outer sleeve 12, an annular airflow cavity 13 with a lower end opened is formed between the outer wall of the supporting sleeve 11 and the inner wall of the outer sleeve 12, and the annular airflow cavity 13 is communicated with the air inlet hole 113.

Specifically, when the upper housing 21 and the lower housing 22 are assembled, the annular airflow chamber 13 serves as an air intake passage of the aerosol generating device, and an air inlet communicating with the air intake passage is formed between the upper housing 21/the lower housing 22 or between the upper housing 21 and the lower housing 22. Preferably, the air inlet 113 is in communication with the upper end of the annular airflow chamber 13 and the air inlet is in communication with the lower end of the annular airflow chamber 13, such that when a user draws on the aerosol-forming substrate 100, air from outside the housing can enter the annular airflow chamber 13 through the air inlet 113, pass through the annular airflow chamber 13, enter the receiving chamber 111 from the air inlet 113, and then mix with the generated aerosol for ingestion by the user; when the airflow passes through the annular airflow cavity 13, the heat in the annular airflow cavity 13 can be taken away and recovered, so that the temperature of the inner support bracket 10 is reduced, and further the temperature of the upper shell 21 is reduced, so that the user cannot feel hot when holding the hand.

In order to facilitate the installation of the inner support bracket 10 and the upper shell 21 and optimize the structure in the upper shell 21, the periphery of the lower end of the outer sleeve 12 is bent outwards to form a connecting part 14 with a U-shaped section, and the connecting part 14 can be fixedly sleeved on the inner side of the lower end of the upper shell 21 in a buckling mode, so that the assembly is more convenient; in the present embodiment, the supporting sleeve 11 and the outer sleeve 12 are integrally formed, and a spacing space is provided between the outer sleeve 12 and the upper casing 21, so that the heat generated by the heating element 31 is further reduced to be transmitted to the upper casing 21, and the temperature of the upper casing 21 is prevented from being too high. In other embodiments, the support sleeve 11 and the outer sleeve 12 may be of a split structure, i.e. the outer sleeve 12 is fixed in the upper housing 21 to clamp the support sleeve 11.

Preferably, the top end of the receiving cavity 111 is outwardly expanded to form a mounting step 114, the top wall of the upper housing 21 downwardly protrudes along the edge of the insertion hole 211 to form a sleeve 212, when the inner bracket 10 is assembled in the upper housing 21, the sleeve 212 is inserted into the mounting step 114 at the top end of the receiving cavity 111 to position the inner bracket 10 in the upper housing 21, so that the receiving cavity 111 is in butt-joint communication with the insertion hole 211, and the inner bracket 10 and the upper housing 21 are fixed to each other by the fixing of the connecting portion 14 and the upper housing 21, thereby facilitating the assembly of the inner bracket 10 and the upper housing 21.

In one embodiment, the aperture size of the receiving cavity 111 is larger than the outer diameter of the aerosol-forming substrate 100; the lower end of the receiving cavity 111 is tapered to form a clamping portion, the aperture of which is smaller than the outer diameter of the aerosol-forming substrate 100. That is, when the aerosol-forming substrate 100 is inserted into the receiving cavity 111, the lower end of the aerosol-forming substrate 100 is snapped into the clip, and the outer side of the lower end of the aerosol-forming substrate 100 forms a sealed state with the inner side of the clip, and a gap is formed between the portion of the aerosol-forming substrate 100 on the clip and the receiving cavity 111, and after entering the gap from the air inlet hole 113, the external air can enter the aerosol-forming substrate 100 from the air vent 101 in the middle of the aerosol-forming substrate 100, so that a middle air inlet mode of the aerosol-forming substrate 100 is realized, and the air flow is prevented from passing through the heat generating region of the heat generating body 31. Preferably, the number of the air intake holes 113 is plural, and the number of the plural air intake holes 113 is uniformly distributed around the central axis of the support sleeve 11.

In an alternative embodiment, a conventional aerosol-forming substrate 100 may also be used, that is, the middle of the aerosol-forming substrate 100 is not provided with a ventilation structure, and the clamping portion is a plurality of ribs which are uniformly distributed on the bottom of the receiving cavity 111 in the circumferential direction, and when the aerosol-forming substrate 100 is inserted into the receiving cavity 111, the lower end of the aerosol-forming substrate 100 is clamped and fixed by the plurality of ribs, so that a ventilation slot is formed between two adjacent ribs, and the airflow entering the receiving cavity 111 through the air inlet hole 113 can pass through the ventilation slot and enter from the bottom of the conventional aerosol-forming substrate 100; although the temperature of the output airflow cannot be reduced by such a structure, an air inlet structure does not need to be arranged at the bottom end of the support sleeve 11, and the purpose of preventing too many matters such as tobacco shreds and particles of the aerosol-forming substrate 100 from falling can also be achieved.

In one embodiment, the upper end opening of the lower housing 22 is formed with a plugging chamber 221, and the fixing seat 32, the lower bracket 34 and the upper bracket 33 of the heating element 30 are fixedly positioned at the bottom of the plugging chamber 221, so that the heating element 31 is positioned in the plugging chamber 221; the lower end of the inner bracket 10 (i.e. the lower end of the support sleeve 11 and the connection part 14) protrudes out of the lower end of the upper shell 21, and the protruding part of the inner bracket 10 is detachably inserted into the insertion cavity 221, so that the upper end of the heating element 31 is inserted into the receiving cavity 111 through the through hole 112; when the aerosol-forming substrate 100 is replaced, the upper case 21 is pulled out from the lower case 22 to separate the inner holder 10 and the aerosol-forming substrate 100 from the heating element 31, and then the aerosol-forming substrate 100 is taken out from the receiving cavity 111 of the inner holder 10, so that a small amount of residues in the receiving cavity 111 of the inner holder 10 and in the insertion cavity 221 of the housing 20 can be cleaned conveniently, and thus, the heating efficiency can be prevented from being affected by excessive residues accumulated in the receiving cavity 111 and the insertion cavity 221 and on the surface of the heating element 31.

Specifically, as shown in fig. 5, the aerosol generating device of the present embodiment further includes a guiding structure to ensure that the upper housing 21 and the lower housing 22 can be smoothly abutted; the bottom wall of the plugging cavity 221 is formed with a guide sleeve 331 protruding along the direction of the plugging cavity 221, that is, the top end of the upper bracket 33 is formed with a guide sleeve 331 protruding toward the direction of the plugging cavity 221, the heating element 31 is located inside the guide sleeve 331, when the upper shell 21 and the lower shell 22 are butted, the lower end of the support sleeve 11 is inserted into the guide sleeve 331, meanwhile, the upper end of the heating element 31 is inserted into the accommodating cavity 111 from the through hole 112 at the bottom end of the support sleeve 11, and the heating element 31 can be prevented from being broken by the side wall of the through hole 112 in the plugging or detaching process of the upper shell 21 and the lower shell 22 through the action of the guide sleeve 331.

In addition, since the inner supporting bracket 10 is formed with the U-shaped connecting portion 14, the U-shaped connecting portion 14 can be conveniently and fixedly placed with the first magnetic member 81, the bottom of the inserting cavity 221 is provided with the corresponding second magnetic member 82, and the second magnetic member 82 is clamped and fixed between the upper bracket 33 and the fixing frame 60, so that the first magnetic member 81 and the second magnetic member 82 are matched with each other, so that the upper shell 21 and the lower shell 22 are connected with each other in a magnetic attraction manner; when the aerosol-forming substrate 100 needs to be replaced, the upper shell 21 can be pulled out of the lower shell 22 by only slightly pulling on the upper shell 21, which is convenient and quick to use.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the above description of the technical solutions provided by the present invention, for those skilled in the art, the idea of the embodiments of the present invention may be changed in the specific implementation manners and the application ranges, and in summary, the content of the present specification should not be construed as limiting the present invention.

Claims (14)

1. An inner support bracket is applied to an aerosol generating device and is characterized by comprising a supporting sleeve, wherein an accommodating cavity for accommodating aerosol-forming substrates is formed in an opening in the top end of the supporting sleeve, a through hole communicated with the accommodating cavity is formed in the bottom end of the supporting sleeve, a heating element is inserted into the accommodating cavity through the through hole, and an air inlet communicated with the accommodating cavity is formed in the side wall of the middle of the supporting sleeve.

2. The inner support bracket as set forth in claim 1, further comprising an outer sleeve fitted over the support sleeve, wherein the support sleeve is connected to a top end of the outer sleeve, and an annular air flow chamber having a lower end opened is formed between an outer wall of the support sleeve and an inner wall of the outer sleeve, the annular air flow chamber being communicated with the air inlet hole.

3. The inner bracket as set forth in claim 2, wherein the lower end periphery of the outer sleeve is bent outwardly to form a connecting portion having a U-shaped cross section.

4. The inner support bracket as set forth in claim 1, wherein the top end of the receiving cavity is outwardly expanded to form a mounting step.

5. The inner holder bracket according to claim 1, wherein the shape of the through-hole is adapted to the cross-sectional shape of the heat-generating body.

6. An inner support bracket according to claim 1, wherein the aerosol-forming substrate is a cylinder and the receiving cavity has a larger bore diameter than the outer diameter of the aerosol-forming substrate; the lower end of the housing cavity is tapered to form a clamping portion, and the aperture of the clamping portion is smaller than the outer diameter of the aerosol-forming substrate.

7. The inner support bracket as claimed in claim 6, wherein the number of the air intake holes is plural, and the number of the plural air intake holes is uniformly distributed around the central axis of the support sleeve.

8. An aerosol generating device comprising an inner support bracket as claimed in any one of claims 1 to 7.

9. The aerosol generating device according to claim 8, further comprising a housing, and a control circuit board, a power supply and a heating element disposed in the housing, wherein the inner bracket is disposed in the housing, and the housing is provided with an insertion hole correspondingly communicating with the top opening of the receiving cavity; the control circuit board is respectively electrically connected with the power supply and the heating component, the heating component comprises a heating element at least partially inserted into the accommodating cavity through the through hole, and the heating element is used for heating the aerosol forming substrate accommodated in the accommodating cavity to generate aerosol for sucking.

10. An aerosol generating device according to claim 9, wherein the housing comprises an upper housing and a lower housing detachably connected to each other, the insertion hole is opened at a top end of the upper housing, and the inner bracket is provided in the upper housing; the control circuit board, power supply and heating element all locate in the casing down, heating element is fixed in the upper end of last casing, just the upper end of heating element passes through the through hole of support sleeve bottom inserts accept in the chamber.

11. The aerosol generating device according to claim 10, wherein the upper opening of the lower case forms a plug cavity, and the lower end of the heating element is fixed to the bottom of the plug cavity; the lower end of the supporting sleeve protrudes out of the lower end of the upper shell, and the protruding portion of the supporting sleeve is detachably inserted into the inserting cavity.

12. The aerosol generating device as claimed in claim 11, wherein a guide sleeve is formed by projecting a bottom wall of the insertion cavity in a direction of the insertion cavity, the heating element is located inside the guide sleeve, and a lower end of the support sleeve is inserted into the guide sleeve when the upper housing is butted against the lower housing.

13. The aerosol generating device as claimed in claim 11, wherein a first magnetic member is fixed outside the supporting sleeve, and a second magnetic member is disposed at the bottom of the insertion cavity, and the first magnetic member and the second magnetic member are engaged with each other to magnetically connect the upper housing and the lower housing to each other.

14. An aerosol-forming substrate for use in an aerosol-generating device according to any of claims 8 to 13, wherein the aerosol-forming substrate is provided with a vent hole in the centre thereof.

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