CN221449879U - Aerosol generating device - Google Patents

Abstract

An embodiment of the present application proposes an aerosol-generating device comprising: a housing; the sleeve is arranged in the shell and comprises an inner tubular body and an outer tubular body which are nested; the inner wall of the inner tubular body is formed with an annular clamping part for clamping the outer surface of the aerosol-generating product; the gap between the inner tubular body and the outer tubular body is defined as at least part of an air inlet channel configured to introduce ambient air into the aerosol-generating article.

Description

Aerosol generating device

Technical Field

The embodiment of the application relates to the technical field of heating non-combustion aerosol generation, in particular to an aerosol generation device.

Background

Smoking articles (e.g., cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. Attempts have been made to replace these tobacco-burning products by making products that release the compounds without burning.

An example of such a product is a heating device that releases a compound by heating rather than burning a material. For example, the material may be an aerosol-generating article comprising tobacco or other non-tobacco products, which may or may not comprise nicotine. The heating device generally comprises a heating assembly and an air inlet channel, wherein the heating temperature of the heating assembly is higher than 200 ℃, and when the suction is stopped, high-temperature air flows back through the air inlet channel, so that in order to prevent the air inlet on the shell of the heating device from being too high in temperature and the vicinity thereof, a longer air inlet channel is required to be arranged for cooling back smoke in the air inlet channel.

The known heating devices generally employ two ways to arrange the intake passage: 1. extending the inlet channel to the bottom of the device, however, this arrangement can result in condensate leakage from condensation of the return air flow, affecting the user experience; 2. the air inlet channel is formed between the cigarette accommodating pipe and the cigarette, and air inlet is adhered to the outer surface of the cigarette, so that the formation of smoke inside the cigarette is not facilitated, and the smoke is promoted to be condensed inside the cigarette, so that the air passage inside the cigarette is blocked, the suction resistance is increased, and the taste is influenced.

Disclosure of utility model

The application provides an aerosol generating device, which enables an air inlet channel to have a sufficient length, can prevent liquid leakage, and is beneficial to ensuring the suction taste of a user.

One embodiment of the present application provides an aerosol-generating device comprising:

A housing;

The sleeve is arranged in the shell and comprises an inner tubular body and an outer tubular body which are nested;

An annular clamping part is formed on the inner wall of the inner tubular body and is used for clamping the outer surface of the aerosol-generating product;

The gap between the inner and outer tubular bodies is defined as at least part of an air intake channel configured to introduce ambient air into the aerosol-generating article.

One embodiment of the present application provides an aerosol-generating device comprising:

a housing having an air intake passage therein;

the end cover is fixed at the upper end of the shell, and an inserting port is arranged on the end cover;

an inner tubular body having an annular clamping portion formed on an inner wall thereof for clamping an outer surface of an aerosol-generating article, a gap between the inner tubular body and the end cap communicating the insertion port and the air intake passage configured to introduce outside air into the aerosol-generating article; and

An airflow heater is at least partially disposed in the intake passage to heat at least a portion of air flowing through the intake passage.

One embodiment of the present application provides an aerosol-generating device comprising:

A housing;

the end cover is fixed at the upper end of the shell, and an inserting port is arranged on the end cover;

a containment tube having a containment chamber therein for containing at least part of the aerosol-generating article;

The sleeve comprises an inner tubular body and an outer tubular body which are nested; the inner tubular body is at least partially arranged between the end cover and the containing tube, an annular clamping part is formed on the inner wall of the inner tubular body and used for clamping the outer surface of the aerosol-generating product, and an air inlet communicated with an air inlet channel is formed on the end cover or between the end cover and the inner tubular body; and

An air flow heater at least partially disposed in the containment tube and upstream of the containment chamber;

Wherein air flows through the air inlet, the air inlet channel between the inner tubular body and the outer tubular body in sequence, and then flows into the air flow heater and the accommodating cavity along at least part of the outer wall of the accommodating tube.

In the aerosol-generating device, the air inlet channel is used for introducing external air into the aerosol-generating product, the sleeve comprises an inner tubular body and an outer tubular body which are nested, an annular clamping part is formed on the inner wall of the inner tubular body, and a gap between the inner tubular body and the outer tubular body is defined as at least part of the air inlet channel. Wherein the annular clamping portion is capable of clamping the outer surface of the aerosol-generating article and of preventing air from flowing along the outer surface of the aerosol-generating article towards the bottom of the aerosol-generating article. Thus, not only the air intake passage has a sufficient length, but also condensate can be prevented from leaking through the air intake passage, and at the same time, problems of low aerosol amount or large suction resistance, etc., affecting the mouthfeel, which are caused by cold air flowing along the outer surface of the aerosol-generating article, can be prevented.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

Fig. 1 is a schematic view of an aerosol-generating device according to an embodiment;

FIG. 2 is a cross-sectional view of a sleeve provided by an embodiment;

FIG. 3 is a combined schematic of a sleeve according to one embodiment;

FIG. 4 is a combined schematic view of another view of a sleeve according to one embodiment;

FIG. 5 is an exploded view of a sleeve provided by an embodiment;

FIG. 6 is a cross-sectional view of a containment tube provided by an embodiment;

In the figure:

1. A sleeve; 11. an inner tubular body; 111. a clamping part; 112. a first abutting portion; 12. an outer tubular body; 121. a second abutting portion; 13. a gap;

2. A receiving tube; 21. a receiving chamber; 22. a thermal insulation layer; 23. an outer tube; 24. an inner tube;

3. an end cap; 31. an insertion port;

4. a heating assembly; 41. an air flow heater;

5. A housing;

6. A power supply; 7. a circuit board; 8. an air inlet; 9. a receiving member; 91. and a support plate.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms "first," "second," "third," and the like in this disclosure are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number or order of features in which such is indicated. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship or movement of the components in a certain posture (as shown in the drawings), and if the posture is changed, the directional indication is correspondingly changed. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may also be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, an embodiment of the present application proposes an aerosol-generating device, which is a device that interfaces or interacts with an aerosol-generating article to form an inhalable aerosol.

As used herein, the term "aerosol-generating article" refers to an article comprising an aerosol-forming substrate that upon heating releases volatile compounds that can form an aerosol. In an embodiment, the aerosol-generating article is removably coupled to the aerosol-generating device. The article may be disposable or reusable.

The aerosol-forming substrate may comprise a solid aerosol-forming substrate. The solid aerosol-forming substrate may comprise a tobacco-containing material containing volatile tobacco flavour compounds that are released from the aerosol-forming substrate upon heating. The solid aerosol-forming substrate may comprise a non-tobacco material. The solid aerosol-forming substrate may comprise tobacco-containing material and no tobacco-containing material.

The aerosol-forming substrate may comprise a liquid aerosol-forming substrate. The liquid aerosol-forming substrate may comprise a tobacco material-containing liquid comprising volatile tobacco flavour components, and may also be a non-tobacco material-containing liquid. The liquid aerosol-forming substrate may comprise water, solvents, ethanol, plant extracts, flavors, fragrances, or vitamin mixtures, and the like, and the flavors may comprise betel nut extract, menthol, peppermint, spearmint oil, various fruit flavor components, and the like, but are not limited thereto. The flavoring agent may comprise ingredients that may provide various aromas or flavors to the user. The vitamin mixture may be a mixture mixed with at least one of vitamin a, vitamin B, vitamin C, and vitamin E, but is not limited thereto.

The aerosol-generating device comprises a housing 5, the housing 5 may constitute a skin of the aerosol-generating device, and a user may hold the housing 5 in his or her hand while using the aerosol-generating device.

The housing 5 has a receiving chamber 21 inside, at least part of the aerosol-generating article may be engaged in the receiving chamber 21, the aerosol-generating device may be an electrically operated device, and the heating assembly 4 adapted to the aerosol-generating device may be an electric heater, so that the heating assembly 4 may generate heat when supplied with electric power, at least part of the heat being transferred to the aerosol-generating article in the receiving chamber 21, such that the aerosol-generating article is heated.

The housing 5 also has an air inlet channel therein for guiding ambient air into the aerosol-generating article engaged in the receiving cavity 21. Air typically enters the aerosol-generating article from the bottom of the aerosol-generating article, and the air intake channel is capable of directing the externally-connected air to the bottom of the aerosol-generating article.

The aerosol-generating device further comprises a power supply 6 and a circuit board 7, the power supply 6 may comprise any suitable battery, the circuit board 7 having one or more controllers 41 thereon, the circuit board 7 being electrically connected to the power supply 6 and the heating assembly 4 to control the power supply 6 to provide power to the heating assembly 4. The circuit board 7 can also control other operations of the aerosol-generating device, such as controlling a sensory cue in the aerosol-generating device to produce a sensory signal such as sound, light or vibration.

The heating assembly 4, the power supply 6 and the circuit board 7 may all be provided inside the housing 5. The shell 5 may be connected to the end cap 3, the end cap 3 may also constitute a surface layer of the aerosol-generating device, the end cap 3 is fixed at the upper end of the shell 5, and the end cap 3 is provided with an insertion opening 31, and at least part of the aerosol-generating product is inserted into the accommodating cavity 21 through the insertion opening 31.

Referring to fig. 1, a sleeve 1 may be further disposed in the housing 5, the sleeve 1 extending in a longitudinal direction, and at least a portion of the aerosol-generating article may be accommodated in the sleeve 1, and more specifically, the sleeve 1 includes an inner tubular body 11 and an outer tubular body 12 disposed in a nested arrangement. The gap between the inner tubular body 11 and the outer tubular body 12 is defined as at least part of the intake passage. Thereby, at least part of the air intake passage is higher than the bottom of the aerosol-generating article, and therefore, condensate formed in the air intake passage can be prevented from leaking through the air intake passage by gravity. It is also apparent that the inlet passage is not rectilinear and therefore has a large air path length, enabling the returning aerosol to cool sufficiently in the inlet passage, which is advantageous in preventing the air inlet temperature of the aerosol-generating device surface from becoming too high to scald the hand.

Referring to fig. 2, at least part of the inner wall of the inner tubular body 11 forms an annular gripping portion 111, the gripping portion 111 having a gripping inner diameter smaller than the outer diameter of the aerosol-generating article, such that the gripping portion 111 is capable of gripping the aerosol-generating article such that the aerosol-forming substrate is held in the receiving chamber 21 during the suction.

Wherein the ring shape is a continuous closed shape formed by combining the end and the end, and can be a circular ring shape, or can be oval, or can be concentric with the inner tubular body 11, or the intersection angle between the central axis of the annular clamping part 111 and the central axis of the inner tubular body 11 is smaller than 90 degrees.

The aerosol generating product is clamped in a coherent annular manner, so that external cold air can be prevented from flowing to the bottom of the aerosol generating product along the surface of the aerosol generating product, the energy consumption of an aerosol generating device can be reduced, the aerosol generating product can be uniformly heated, and the aerosol can be prevented from condensing in an aerosol forming substrate to block an air passage and increase the suction resistance.

In an embodiment, the receiving cavity is formed in the inner tubular body, and the aerosol-forming substrate is received in the inner tubular body when the aerosol-generating article is engaged with the aerosol-generating device. Based on this, in an example, at least part of the inner tubular body is configured to be able to generate heat, or the inner tubular body is a constituent part of a heating assembly, to release heat to heat the aerosol-forming substrate, causing the aerosol-forming substrate to generate an aerosol; in one example, the heating assembly is coupled to an inner tubular body, at least a portion of the inner tubular body being configured to absorb heat from the heating assembly and then release a portion of the heat absorbed thereby to heat the aerosol-forming substrate; in an example, at least part of the heating assembly is arranged in the inner tubular body and at least part of the heating assembly is insertable into the interior of the aerosol-generating article to heat the aerosol-generating article; in one example, the heating assembly includes an air flow heater disposed in the air inlet passage upstream of the receiving chamber for heating air to be flowed into the interior of the aerosol-generating article to form hot air that heats the aerosol-forming substrate during flow of the hot air into the interior of the aerosol-generating article.

In an embodiment, the housing 5 may further be provided with a receiving tube 2 therein, the receiving cavity 21 being formed in the receiving tube 2, the inner tubular body 11 being configured to introduce the aerosol-generating article from the insertion opening 31 into the receiving cavity 21, whereby at least part of the inner tubular body 11 may be provided between the receiving tube 2 and the end cap 3.

The use of a continuous annular clamping of the aerosol-generating article can prevent the aerosol-generating article from being deformed and from forming sharp corners on the aerosol-generating article, and can correct the shape of the aerosol-generating article, thereby facilitating smooth insertion of the aerosol-generating article from the inner tubular body 11 into the receiving tube 2 and smooth extraction of the aerosol-generating article from the receiving tube 2, as compared to the use of a rib clamping.

As an example, reference may be made to fig. 2, in which the inner tubular body 11 has a constant inner diameter, i.e. the inner wall of the inner tubular body 11 has approximately the same diameter or radius throughout, or almost all of the inner wall of the inner tubular body 11 participates in forming the clamping portion 111, it being noted that the inner tubular body 11 has a constant inner diameter if the upper end opening (disposed toward the outside or end cap 3) and/or the lower end opening (disposed toward the receiving tube 2) of the inner wall of the inner tubular body 11 is configured as a flare or funnel, while the remaining portion has approximately the same inner diameter or radius.

As an example, reference may be made to fig. 1, in order to facilitate the insertion of the aerosol-generating article into the receiving tube 2, the inner diameter of the receiving tube 2 is larger than the outer diameter of the aerosol-generating article. Wherein the inner diameter of the clamping portion 111 may be smaller than the inner diameter of the receiving tube 2.

In one embodiment, the inner tubular body and the outer tubular body are integrally formed, and the wall of the sleeve is provided with a through hole, which forms at least part of the air inlet channel.

Alternatively, in an embodiment, reference may be made to fig. 2-5, wherein the inner tubular body 11 and the outer tubular body 12 are interconnected by assembly, and wherein, after assembly, there is a gap between the inner tubular body 11 and the outer tubular body 12, which gap constitutes at least part of the intake passage.

As an example, referring to fig. 1, an intake port 8 communicating an insertion port 31 with an intake passage may be provided between an inner tubular body 11 and an end cover 3, and outside air may enter the intake passage through the insertion port 31 and the intake port 8 in sequence.

As an example, referring to fig. 1, the upper end portion of the outer tubular body 12 abuts against the end cover 3, and the inner tubular body 11 is spaced apart from the end cover 3, so that the air intake port 8 is formed between the inner tubular body 11 and the end cover 5.

In the example shown in fig. 1-3, the upper end of the inner tubular body 11 is located inside the outer tubular body 12 and below the upper end of the outer tubular body 12, no part of the end cap 3 may extend into the outer tubular body 12, such that the end cap 3 is spaced from the inner tubular body 11 with the upper end located within the outer tubular body 11, or a part of the end cap 3 may extend into the outer tubular body 12 with the air inlet 8 between the inner tubular body 11 and the outer tubular body 12.

In other examples, an air inlet/air outlet communicating the outside with the air intake passage may be formed in the end cover, and the air inlet/air outlet and the insertion port 31 may be independent.

As an example, referring to fig. 4 and 5, a first abutting portion may be formed on the inner tubular body 12, a second abutting portion 121 may be formed on the outer tubular body 12, and the first abutting portion 112 abuts against the second abutting portion 121 such that a gap 13 is provided between the outer surface of the inner tubular body 11 and the inner surface of the outer tubular body 12, the gap 13 constituting at least part of the intake passage.

The inner tubular body 11 and the outer tubular body 12 may be snap-fit or screw-fit or magnetically attached, or the inner tubular body 11 and the outer tubular body 12 may be fixed to each other by an interference fit between the first abutment 112 and the second abutment 121.

In the example shown in fig. 4 and 5, in order to facilitate the assembly of the inner tubular body 11 into the outer tubular body 12, one of the first abutment 112 and the second abutment 121 comprises a guide groove, the other comprises a protrusion, at least partially embedded in the guide groove, the protrusion being configured to slide along the guide groove so as to guide the inner tubular body 11 to the interior of the outer tubular body 12 for fixation.

The guide groove may extend to the end of the inner tubular body 11 and/or the outer tubular body 12 or extend to be adjacent to the end of the inner tubular body 11 and/or the outer tubular body 12.

The guide grooves may extend in the extending direction of the geometric generatrix of the inner tubular body 11 and/or the outer tubular body 12, and the guide grooves may extend obliquely or spirally.

The protrusion may be configured in a bar shape or a block shape, and an extension length of the protrusion may be less than or equal to an extension length of the guide groove.

When assembling the inner tubular body 11 and the outer tubular body 12, the protrusions are first aligned with the guide grooves, then the protrusions are connected with the guide grooves, the inner tubular body 11 and/or the outer tubular body 12 are pushed, and the protrusions are slid along the guide grooves until the inner tubular body 11 enters a preset position within the outer tubular body 12. The guide groove may be provided with a positioning portion to abut against the projection when the inner tubular body 11 enters a preset position in the outer tubular body 12.

As an example, the air in the air intake channel can flow along at least part of the outer wall of the containment tube 2 until it enters the containment chamber 21. More specifically, referring to fig. 1, the aerosol-generating device further comprises a receiving member 9, the receiving tube 2 being held inside the receiving member 9, and a part of the air intake passage being formed between the receiving tube 2 and the receiving member 9. Wherein the outer tubular body 12 may be connected to the receiving member 9 in a snap-fit connection.

As an example, reference may be made to fig. 1, in which the containment tube 2 is held inside the receiving member 9, and the receiving member 9 insulates the air intake channel from the power supply assembly, so that condensation of aerosols flowing back along the air intake channel on the power supply assembly to form condensate can be avoided.

In the example shown in fig. 1, the circuit board 7 in the power supply assembly is arranged laterally of the receiving tube 2, the power supply 6 in the power supply assembly is arranged below the receiving tube 2, the circuit board 7 is insulated from the air inlet channel by at least part of the side walls extending longitudinally on the receiving member 9, the power supply 6 is insulated from the air inlet channel by a support plate 91 extending transversely on the receiving member 9, wherein the support plate 91 can support the heating assembly 4 such that at least part of the heating assembly 4 is held inside the receiving member 9.

As an example, reference may be made to fig. 1, wherein the heating assembly 4 comprises an air flow heater 41 arranged at least partially inside the receiving tube 2, at least a part of the air flow heater 41 being arranged in the air inlet channel, the air flow heater 41 being arranged to heat at least part of the air flow flowing from the air inlet channel to the receiving chamber 21, forming a hot air flow, which flows towards the downstream receiving chamber 21 and into the interior of the aerosol-generating article, thereby heating the aerosol-generating article inside the aerosol-generating article, causing the aerosol-generating article to generate an aerosol.

It should be noted that in other examples, the heating assembly may include an internal heater and/or an external heater. As used herein, the term "external heater" refers to a heater that is positioned external to the aerosol-generating article when the aerosol-generating article is assembled in an aerosol-generating device. As used herein, the term "internal heater" refers to a heater that is positioned at least partially within an aerosol-generating article when the aerosol-generating article is assembled in an aerosol-generating device. Based on this, in an example, at least part of the containment tube is configured to be able to generate heat, or the containment tube is a constituent part of a heating assembly, to release heat to heat the aerosol-forming substrate, causing the aerosol-forming substrate to generate an aerosol; in one example, the heating assembly is coupled to a containment tube, at least a portion of the containment tube being configured to absorb heat from the heating assembly and then release a portion of the heat absorbed thereby to heat the aerosol-forming substrate; in an example, at least part of the heating assembly is arranged in the containment tube and at least part of the heating assembly is insertable into the interior of the aerosol-generating article to heat the aerosol-generating article.

In one embodiment, referring to fig. 1 and 6, the upper end opening of the housing tube 2 is flared toward the insertion port 31. To prevent the bottom of the aerosol-generating article from being scraped into the upper end of the receiving tube 2 when inserted into the upper end opening of the receiving tube 2, so that the bottom of the aerosol-generating article forms burrs or impedes the entry of the aerosol-generating article into the receiving tube 2.

As an example, reference may be made to fig. 6, in which the wall of the containment tube 2 has an insulating layer 22. More specifically, the accommodating tube 2 includes an outer tube 23 and an inner tube 24 disposed inside the outer tube 23, and the inner tube 24 and the outer tube 23 are spaced apart from each other to form a sandwich layer 22, and the sandwich layer 22 may be filled with a heat insulating material. By thermally insulating material is meant a material having a thermal conductivity of less than 100W/(mK), preferably less than 40W/(mK) or less than 10W/(mK) at 23℃and 50% relative humidity. For example, the insulating material may comprise at least one of a PAEK-like material, a PI material, or a PBI material, wherein the PAEK-like material comprises PEEK, PEKK, PEKEKK or PEK material. For example, the insulating material may comprise at least one of aerogel, felt, or insulating cotton. Air or gas is also a thermal insulating material, and the interlayer 22 may be filled with air or some specific gas to form a gas thermal insulating layer. The interlayer 22 may be airtight and the interlayer 22 may be a negative pressure layer.

The lower end portion of the inner tube 24 and the lower end portion of the outer tube 23 may be connected and integrated. In one example, the upper end of the inner tube flares toward the insertion opening and is integral with the upper end of the outer tube, and the insulating layer surrounds the flared upper end opening that accommodates the tube. In one example, referring to fig. 6, the upper end portion of the inner tube 24 is flared toward the insertion opening 31 to form a flared opening a, the upper end portion of the outer tube 23 is gradually folded and connected to the side wall of the inner tube 24, and the flared opening a at the upper end of the inner tube 24 is located above the upper end portion of the outer tube 23, so that at least part of the periphery of the flared opening a of the receiving tube 2 is free of the heat insulating layer 22.

Wherein the shape of the cross-section of the containment tube 2 or the shape of the cross-section of the inner tube 24 may be circular to receive a cylindrical aerosol-generating article. In other embodiments, the shape of the cross-section of the containment tube 2 or the shape of the cross-section of the inner tube 24 may be elliptical to receive an elliptical aerosol-generating article or to shape a cylindrical aerosol-generating article into an ellipse. The upper end opening of the receiving tube 2 may also be circular or oval.

As an example, reference may be made to fig. 1, in which at least part of the heating assembly 4 is arranged inside the containment tube 2, for example in which at least part of the air flow heater 41 is arranged inside the containment tube 2 and surrounded by the insulating layer 22. The insulating layer 22 may also surround the receiving cavity 21.

Referring to fig. 1, a part of the air inlet channel is disposed at the periphery of the accommodating tube 2, and the accommodating tube 2 has a heat insulation effect, so that the cold air entering the air inlet channel from the outside will not take away the surface temperature of the aerosol-generating article, which helps to ensure that the aerosol-generating article in the accommodating tube 2 is sufficiently and uniformly baked, to slow down the speed of the decrease of the air flow temperature inside the aerosol-generating article, and to prevent the aerosol from condensing in the aerosol-generating article and clogging the aerosol-generating article.

In the aerosol-generating device described above, the outside air may flow through the air inlet 8, the air inlet passage between the outer tubular body 12 and the inner tubular body 11 in this order, and then flow into the airflow heater 41 and the accommodating chamber 21 along at least part of the outer wall of the accommodating tube 2.

In the aerosol-generating device, the air inlet channel is used for introducing external air into the aerosol-generating product, the sleeve comprises an inner tubular body and an outer tubular body which are nested, an annular clamping part is formed on the inner wall of the inner tubular body, and a gap between the inner tubular body and the outer tubular body is defined as at least part of the air inlet channel. Wherein the annular clamping portion is capable of clamping the outer surface of the aerosol-generating article and of preventing air from flowing along the outer surface of the aerosol-generating article towards the bottom of the aerosol-generating article. Thus, not only the air intake passage has a sufficient length, but also condensate can be prevented from leaking through the air intake passage, and at the same time, problems of low aerosol amount or large suction resistance, etc., affecting the mouthfeel, which are caused by cold air flowing along the outer surface of the aerosol-generating article, can be prevented.

It should be noted that the description of the application and the accompanying drawings show preferred embodiments of the application, but are not limited to the embodiments described in the description, and further, that modifications or variations can be made by a person skilled in the art from the above description, and all such modifications and variations are intended to fall within the scope of the appended claims.

Claims (14)

1. An aerosol-generating device, comprising:

A housing;

The sleeve is arranged in the shell and comprises an inner tubular body and an outer tubular body which are nested;

An annular clamping part is formed on the inner wall of the inner tubular body and is used for clamping the outer surface of the aerosol-generating product;

The gap between the inner and outer tubular bodies is defined as at least part of an air intake channel configured to introduce ambient air into the aerosol-generating article.

2. An aerosol-generating device according to claim 1, further comprising a receiving tube having a receiving cavity therein for receiving an aerosol-generating article at least partially, and an end cap having an insertion opening, the inner tubular body being arranged between the end cap and the receiving tube for introducing the aerosol-generating article from the insertion opening into the receiving cavity.

3. An aerosol-generating device according to claim 2, wherein the inner tubular body has a constant inner diameter.

4. An aerosol-generating device according to claim 2, wherein the inner diameter of the gripping portion is smaller than the inner diameter of the containment tube.

5. The aerosol-generating device according to claim 2, wherein there is an air inlet between the inner tubular body and the end cap that communicates the insertion port with the air inlet passage.

6. An aerosol-generating device according to claim 5, wherein the outer tubular body abuts the end cap, the inner tubular body being spaced from the end cap to form the air inlet.

7. An aerosol-generating device according to claim 2, further comprising a receiving member, the receiving tube being retained within the receiving member, a portion of the air inlet passage being formed between the receiving tube and the receiving member, and the outer tubular body being snap-fit with the receiving member.

8. An aerosol-generating device according to claim 2, further comprising a receiving member and a power supply assembly, the receiving tube being held inside the receiving member, and the receiving member isolating the air inlet passage from the power supply assembly.

9. An aerosol-generating device according to claim 2, wherein the upper end opening of the receiving tube flares towards the insertion opening.

10. An aerosol-generating device according to claim 9, wherein the wall of the containment tube has an insulating layer therein.

11. An aerosol-generating device according to any of claims 2-10, wherein the aerosol-generating device comprises a heating assembly;

The heating assembly comprises an air flow heater at least partially arranged inside the accommodating tube, the air flow heater being located upstream of the accommodating cavity; or alternatively

The accommodating tube is a constituent part of the heating assembly; or alternatively

At least part of the heating assembly is arranged in the receiving cavity for insertion into the interior of the aerosol-generating article.

12. The aerosol-generating device according to claim 1, wherein the inner tubular body has a first abutment formed thereon and the outer tubular body has a second abutment formed thereon, the first abutment abutting the second abutment such that the gap is provided between the inner and outer tubular bodies.

13. An aerosol-generating device according to claim 12, wherein one of the first abutment and the second abutment comprises a guide groove and the other comprises a protrusion at least partially embedded in the guide groove, the protrusion being configured to slide along the guide groove to guide the inner tubular body to the interior of the outer tubular body.

14. An aerosol-generating device, comprising:

A housing;

the end cover is fixed at the upper end of the shell, and an inserting port is arranged on the end cover;

a containment tube having a containment chamber therein for containing at least part of the aerosol-generating article;

The sleeve comprises an inner tubular body and an outer tubular body which are nested; the inner tubular body is at least partially arranged between the end cover and the containing tube, an annular clamping part is formed on the inner wall of the inner tubular body and used for clamping the outer surface of the aerosol-generating product, and an air inlet communicated with an air inlet channel is formed on the end cover or between the end cover and the inner tubular body; and

An air flow heater at least partially disposed in the containment tube and upstream of the containment chamber;

Wherein air flows through the air inlet, the air inlet channel between the inner tubular body and the outer tubular body in sequence, and then flows into the air flow heater and the accommodating cavity along at least part of the outer wall of the accommodating tube.