CN117837809A - Aerosol generating device - Google Patents

Abstract

The invention discloses an aerosol generating device, which comprises a shell, a heating part, a power supply and a plugging piece, wherein the heating part is arranged on the shell; the shell comprises a proximal end and a distal end, wherein the proximal end is provided with a first opening, and the distal end is provided with a second opening; the heating part is arranged between the proximal end and the distal end, the heating part comprises a penetrating heating cavity for accommodating aerosol-generating products and a heating piece, the heating piece is electrically connected with a power supply, the aerosol-generating products are removably inserted into the penetrating heating cavity through a first opening, and the plugging piece is arranged at a second opening of the distal end; the blocking piece comprises a cover head and a support, wherein the cover head comprises a stop part for blocking the second opening, the stop part is provided with an air inlet part, the support comprises a flow guide part, and when a user sucks, air flow can flow through the flow guide part through the air inlet part so as to enter the aerosol generating product. The invention provides the aerosol generating device which is reliable in use, free from foolproof, convenient to operate, convenient to clean, simple in structure, good in suction experience and easy to maintain.

Description

Aerosol generating device

Technical Field

The present invention relates to the field of aerosol-generating technology, and more particularly to an aerosol-generating device.

Background

The aerosol generating device is used for heating tobacco products, and the smoke is gradually volatilized after heating. The purpose of such aerosol-generating devices is to reduce the production of harmful smoke constituents by the combustion and thermal degradation of tobacco in conventional cigarettes. The smoke from the lighting of a conventional end-fire smoking cigarette has been analyzed to contain about 4000 chemicals, many of which are toxic, many of which are thousands of carcinogens, and which are serious health hazards. The aerosol generating device heats the tobacco products through the heat source but does not burn to generate smoke, thereby realizing the satisfaction similar to cigarettes and reducing harmful smoke components generated by burning and thermal degradation. Heating the non-combustion smoke significantly reduces sidestream smoke compared to conventional end-lit smoke. At the same time, it is relatively portable and provides quick and convenient recharging for reuse.

The aerosol-generating article generates smokeable smoke after being heated, and volatile compounds such as tar in the tobacco product are released. Wherein, a part of tar oil and other organic matters are sucked into the oral cavity by a consumer after passing through a filter tip on the tobacco product, and the other part flows out from one end of the tobacco product far away from the oral cavity and remains in the heating cavity, besides the precipitate can remain in the heating cavity, and tobacco scraps in the tobacco product can fall into the heating cavity along with the action of the consumer in the use process. Tar is a brown greasy substance, is relatively viscous, and is very difficult to clean after accumulation. The residues remain in the aerosol-generating device, and the re-suction can have suction odor, seriously affecting the suction experience and even corroding components of the aerosol-generating device.

The aerosol generating device is usually opened by arranging a openable cover, but the traditional cover is inconvenient to open and close, and because the cover is required to block the precipitate, the structure of the cover can influence the flow path of air inlet during suction so as to influence the suction taste, such as increasing the suction resistance, and the like, therefore, the aerosol generating device which is convenient to open and close, is convenient to clean and can promote the suction taste is required to be developed.

Disclosure of Invention

It is an object of the present invention to provide an aerosol-generating device that is easy to clean and has a better suction experience, to solve the problems of inconvenient cleaning and poor suction experience of the aerosol-generating device in use.

According to an aspect of the present invention, there is provided an aerosol-generating device comprising a housing, a heating portion, a power source and a closure;

the shell comprises a proximal end and a distal end, wherein the proximal end is provided with a first opening, and the distal end is provided with a second opening;

the heating part is arranged between the proximal end and the distal end, the heating part comprises a penetrating heating cavity for accommodating aerosol-generating products and a heating piece, the heating piece is electrically connected with the power supply, the aerosol-generating products are removably inserted into the penetrating heating cavity through the first opening, and the plugging piece is arranged at a second opening of the distal end;

the blocking piece comprises a cover head and a support, wherein the cover head comprises a stop part for blocking the second opening, an air inlet part is formed in the stop part, the support comprises a flow guide part, and when a user sucks, air flow can flow through the flow guide part through the air inlet part so as to enter the aerosol generating product.

Further, the cover head is located at the inner side of the stop part and is provided with a first fixing part, the support is provided with a second fixing part, and the first fixing part is connected with the second fixing part.

Further, the first fixing portion is of a cavity structure, and the second fixing portion is of a columnar structure, so that the second fixing portion is inserted into the first fixing portion.

Further, the cover head is located outside the stopping portion and is further provided with a handle, and a user can operate the removal or installation of the plugging piece through the handle.

Further, when the closure is mounted on the aerosol-generating device, a buffer layer is formed between the inner side of the stop and the end face of the through-heating chamber.

Further, the thickness of the buffer layer is at least 2mm.

Further, a diversion part is further arranged on the cover head and positioned on the inner side of the stop part, and the diversion part can divert air entering from the air inlet part.

Further, the diversion part is of a sheet-shaped structure arranged along the circumference of the cover head and is matched with the diversion part.

Further, the flow guiding part comprises a plurality of ribs which are uniformly distributed circumferentially around the axis of the bracket, and each rib is streamline in shape with continuous variation of width along the axial direction.

Further, the number of the ribs is at least four.

The invention has the following technical effects:

on the premise of not increasing the overall complexity and volume, the structure of the aerosol generating device is designed, so that a buffer layer is formed between the plugging piece and the penetrating heating cavity, and the suction taste is optimized. Simultaneously, through structural optimization, the height of the handle of the blocking piece becomes high, and a user is easier to exert force when holding the handle, so that the blocking piece is easier to assemble and disassemble, and the aerosol generating device is more convenient to clean. And the cross structure of the plugging piece support has stronger and more reliable limit supporting force on cigarettes. Furthermore, the axisymmetric structure of the closure member makes it unnecessary to introduce a foolproof design into the aerosol-generating device, and is easier to operate.

In summary, the invention provides an aerosol generating device which is reliable in use, free of foolproof, convenient to operate, convenient to clean, simple in structure and good in suction experience.

Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic perspective view of a closure according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of a closure separated from an aerosol-generating device in accordance with an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a bracket according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a capping head according to an embodiment of the present invention;

fig. 5 is a partial cross-sectional view of an aerosol-generating device according to an embodiment of the invention;

fig. 6 is a cross-sectional view of an aerosol-generating device according to an embodiment of the invention.

Reference numerals illustrate: 100-a housing; 200-heating part; 210-penetrating the heating chamber; 220-heating element; 300-power supply; 400-plugging piece; 410-capping; 411-air inlet; 412-a handle; 413-a first fixing portion; 414-stop; 415-split; 420-a bracket; 421—a flow guide; 422-a second fixing portion; 500-buffer layer.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

For ease of understanding, the terms "proximal", "distal" and the like are used herein with reference to the distance from the user's mouth after insertion of the aerosol-generating device in its erect condition.

Fig. 1 shows an embodiment of a closure 400. In this embodiment, the closure 400 includes a cap 410 and a holder 420, the cap 410 and the holder 420 being detachably mounted together. When the closure 400 is installed in an aerosol-generating device, the cap 410 is able to catch the aerosol-generating product deposits and residues, while the proximal face of the holder 420 is able to be supported against the distal end of the cigarette. The proximal end of the cap 410 comprises a first fixing portion 413, the distal end of the bracket 420 comprises a second fixing portion 422, and the cap 410 and the bracket 420 are fixed together by the cooperation of the first fixing portion 413 and the second fixing portion 422.

Specifically, the first fixing portion 413 has a cavity structure; the second fixing portion 422 has a columnar structure, and the second fixing portion 422 is inserted into the first fixing portion 413 to be in interference fit with the first fixing portion 413 to complete the assembly of the plugging piece 400.

Fig. 4 shows an embodiment of a cap 410. In the present embodiment, the cap 410 includes an air inlet 411, a handle 412, a stopper 414 and a shunt 415, wherein the stopper 414 is used for catching the precipitate and residue falling from the distal end of the aerosol-generating article, and the air inlet 411 is a through hole provided on the stopper 414. The handle 412 is provided at the distal end of the cap 410, and a user can detach the cap 410 by operating the handle 412, and the air flow-dividing portion 415 can divide the air taken in from the air intake portion 411.

Specifically, the height of the handle 412 is 5mm.

Specifically, the split portion 415 is a pair of ribs provided in the circumferential direction of the first fixing portion 413.

Fig. 3 shows an embodiment of a bracket 420. In this embodiment, the bracket 420 includes a flow guiding portion 421.

Specifically, the flow guiding portion 421 has a rib structure.

Specifically, the number of the ribs is 4, and the 4 ribs are symmetrically arranged.

In particular, each rib has a continuous variation in width in the axial direction.

Fig. 5 shows a partial cross-sectional view through the heating chamber 210 between the distal face of the heating chamber 210 and the proximal face of the stopper 414 at the second opening 120 of the aerosol-generating device.

Fig. 6 is a cross-sectional view of an aerosol-generating device comprising a housing 100, a heating portion 200, a power source 300, and a closure 400;

the housing 100 includes a proximal end including a first opening 110 and a distal end including a second opening 120;

the heating portion 200 is disposed between the proximal end and the distal end, the heating portion 200 includes a through heating cavity 210 for accommodating an aerosol-generating article and a heat generating element 220, the heat generating element 220 is electrically connected to a power source 300 and is capable of converting electrical energy into thermal energy, the aerosol-generating article is removably inserted into the through heating cavity 210 through the first opening 110, and the blocking element 400 is disposed at the distal end.

When the user inhales, the air flow path is as follows:

fresh air firstly enters the buffer layer 500 through the air inlet part 411, the air flow speed of the air in the buffer layer 500 is reduced, the sucking taste can be optimized by the buffer layer 500, and the use experience of consumers is improved. The air of the buffer layer 500 is substantially divided into two air flows through the dividing part 415, and the air flows through the dividing part 415 to more uniformly flow to the guide part 421. Because the flow guiding portion 421 includes the streamline rib extending along the axial direction, the air flowing through the flow guiding portion 421 can flow along the axial direction and finally flow into the aerosol-generating product substrate portion, the radial flow of the air flow can be effectively prevented by the structural design of the flow guiding portion 421, so that the air and the substrate portion are fully mixed, the suction taste is improved, the suction resistance can be reduced, and the user experience is optimized.

Preferably, at least a portion of the material of the closure member 400 is selected from a high temperature resistant material such as PEEK.

According to the invention, on the premise of not increasing the overall complexity and volume, the buffer layer 500 is formed between the blocking piece 400 and the penetrating heating cavity 210 by designing the structure of the aerosol generating device, so that the suction taste is optimized, and the fresh air and the substrate part are more fully mixed while the suction resistance is reduced by designing the flow guiding part 421 to change the airflow flow path, so that the suction experience is further improved. Meanwhile, through structural optimization, the height of the handle 412 is increased, a user can easily exert force when holding the handle 412, the plugging piece 400 is easier to assemble and disassemble, and the aerosol generating device is more convenient to clean. And the cross structure of the bracket 420 has stronger and more reliable limit supporting force on the cigarettes. In addition, the blocking piece 400 is integrally in an axisymmetric structure, so that a foolproof design is not required to be introduced into the aerosol generating device, and the operation is easier.

In summary, the invention provides an aerosol generating device which is reliable in use, free of foolproof, convenient to operate, convenient to clean, simple in structure, good in suction experience and easy to maintain.

Wherein the aerosol-generating article is a smoking article comprising an aerosol-forming substrate which upon heating generates an aerosol which is directly inhalable into a user's lungs through a user's mouth.

Preferably, the aerosol-forming substrate is a solid aerosol-forming substrate. The aerosol-forming substrate may comprise both solid and liquid components.

Preferably, the aerosol-forming substrate comprises nicotine. In some preferred embodiments, the aerosol-forming substrate comprises tobacco. For example, the aerosol-forming material may be formed from a sheet of homogenised tobacco.

Alternatively or additionally, the aerosol-forming substrate may comprise tobacco-free aerosol-forming material. For example, the aerosol-forming material may be a tablet comprising nicotine salt and an aerosol-forming agent.

If the aerosol-forming substrate is a solid aerosol-forming substrate, the solid aerosol-forming substrate may comprise one or more of a powder, a granule, a pellet, a chip, a sliver, a strip or a sheet containing one or more of herbal leaf, tobacco rib, flat tobacco and homogenized tobacco.

Preferably, the aerosol-forming substrate comprises a plug comprising a gathered sheet of homogenised tobacco material or other aerosol-forming material surrounded by a wrapper.

In this patent, an aerosol-former is used to describe any suitable known compound or mixture of compounds that, in use, promotes aerosol formation and is substantially resistant to thermal degradation at the operating temperature of the aerosol-generating article.

Suitable aerosol formers are known in the art and include, but are not limited to: polyols such as propylene glycol, triethylene glycol, 1, 3-butanediol, and glycerol; esters of polyhydric alcohols, such as monoacetin, diacetin or triacetin; and aliphatic esters of mono-, di-or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate. Preferred aerosol formers are polyols or mixtures thereof, such as propylene glycol, triethylene glycol, 1, 3-butanediol, and most preferably glycerol.

The aerosol-forming substrate may comprise a single aerosol-former. Alternatively, the aerosol-forming substrate may comprise a combination of two or more aerosol-formers.

Preferably, the aerosol-forming substrate has an aerosol former content of greater than 5% by dry weight. More preferably, the aerosol-forming substrate may have an aerosol former content of between about 5% and about 30% by dry weight. In one embodiment, the aerosol-forming substrate has an aerosol former content of about 20% by dry weight.

The aerosol-forming substrate comprising the homogenized tobacco sheet used in the aerosol-generating article may be manufactured by manufacturing processes known in the art, such as roll-pressing, thick-pulp and paper-making.

Aerosol-forming articles may have the appearance of conventional cigarettes, with smoking articles such as cigarettes and their specifications generally being named according to the length of the cigarette, as described below. The term "standard" generally means a cigarette having a length ranging from 68mm to 75mm, for example, from about 68mm to about 72mm, the term "short" or "mini" means a cigarette having a length of 68mm or less, the term "superscalar" generally means a cigarette having a length ranging from 75mm to 91mm, for example, from about 79mm to about 88mm, the term "long" or "lengthened" generally means a cigarette having a length ranging from 91mm to 105mm, for example, from about 94mm to about 101mm, and the term "ultralong" generally means a cigarette having a length ranging from about 110mm to about 121 mm. The smoking article is named according to the outer periphery of the cigarette, as described below. The term "standard" means a cigarette having an outer periphery of about 23mm to 25mm, the term "thick" means a cigarette having an outer periphery of 25mm or more, the term "thin" means a cigarette having an outer periphery of about 22mm to 23mm, the term "slender" means a cigarette having an outer periphery of about 19mm to 22mm, the term "ultra-fine" means a cigarette having an outer periphery of about 16mm to 19mm, and the term "fine" means a cigarette having an outer periphery of about 16mm or less. Thus, an oversized and ultrafine cigarette has a length of, for example, about 83mm and an outer circumference of about 17 mm. Standard, out-of-standard cigarettes, i.e. cigarettes having a length of 75mm to 91mm and a circumference of 23mm to 25mm, are favored by many customers. Cigarette articles of various sizes may also be manufactured with filters of different lengths. In general, short filters are used for cigarette articles of a standard that are short in both length and circumference. Typically, filter lengths range from 15mm for use with "short" and "standard" gauge cigarette articles to 30mm for use with "ultra-long" and "ultra-fine" gauge cigarette articles. The length of tipping paper in the length direction of the filter-tipped cigarette article is longer than the filter by, for example, 3mm to 10mm.

Preferably, the aerosol-forming article comprises an aerosol-forming substrate, a support element, an aerosol-cooling element and a mouthpiece. Preferably, the aerosol-forming substrate, the support element, the aerosol-cooling element and the mouthpiece are substantially cylindrical and have substantially comparable outer diameters. For example, having an outer diameter of at least 5mm. Preferably having an outer diameter of between about 5mm and about 12mm, for example between about 5mm and about 10mm or between about 6mm and about 8 mm. In a preferred embodiment, having an outer diameter of 7.2mm +/-10%.

Preferably, the aerosol-forming substrate may have a length of between about 5mm and about 15mm, for example between about 8mm and about 12 mm. In a preferred embodiment, the aerosol-forming substrate has a length of about 12 mm.

The support element may be located immediately downstream of the aerosol-forming substrate and may be in close proximity to the aerosol-forming substrate.

The support element may be formed from any suitable material or combination of materials. For example, the support element may be formed of one or more materials selected from the group consisting of: cellulose acetate; a paperboard; curled papers such as curled heat resistant papers or curled parchment papers; and polymeric materials such as Low Density Polyethylene (LDPE). In a preferred embodiment, the support element is formed from cellulose acetate.

The support element may comprise a hollow tubular element. In a preferred embodiment, the support element comprises a medium cellulose acetate tube.

The aerosol-cooling element may be located downstream of the aerosol-forming substrate, e.g. the aerosol-cooling element may be located immediately downstream of the support element and may be in close proximity to the support element. The aerosol-cooling element may also be located between the support element and a mouthpiece located at the most downstream end of the aerosol-generating article.

The aerosol-cooling element may have a total surface area of between about 300 square millimeters per millimeter of length and about 1000 square millimeters per millimeter of length. In a preferred embodiment, the aerosol-cooling element has a total surface area of about 500 square millimeters per millimeter of length.

Preferably, the aerosol-cooling element has a low resistance to draw. That is, preferably, the aerosol-cooling element provides a low resistance to air passing through the aerosol-generating article. Preferably, the aerosol-cooling element does not substantially affect the resistance to draw of the aerosol-generating article.

The aerosol-cooling element may comprise a plurality of longitudinally extending channels. The plurality of longitudinally extending channels may be defined by a sheet material that has undergone one or more of crimping, pleating, gathering, and folding to form the channels. The plurality of longitudinally extending channels may be defined by a single sheet that has undergone one or more of crimping, pleating, gathering, and folding to form the plurality of channels. Alternatively, the plurality of longitudinally extending channels may be defined by a plurality of sheets that have undergone one or more of crimping, pleating, gathering, and folding to form the plurality of channels.

In some embodiments, the aerosol-cooling element may comprise a concentrated sheet of material selected from the group consisting of: metal foil, polymeric material, and substantially non-porous paper or paperboard. In some embodiments, the aerosol-cooling element may comprise an aggregated sheet of material selected from the group consisting of: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), cellulose Acetate (CA) and aluminum foil. In a preferred embodiment, the aerosol-cooling element comprises an aggregated sheet of biodegradable material. For example, an aggregate sheet of nonporous paper or an aggregate sheet of biodegradable polymeric material (e.g., polylactic acid).

The aerosol-cooling element may be formed from an aggregated sheet of material having a specific surface area of between about 10 square millimeters per milligram and about 100 square millimeters per milligram weight. In some embodiments, the aerosol-cooling element may be formed from an aggregated sheet of material having a specific surface area of about 35mm 2/mg.

The aerosol-generating article may comprise a mouthpiece located at the mouth end of the aerosol-generating article. The mouthpiece may be located immediately downstream of the aerosol-cooling element and immediately adjacent to the aerosol-cooling element. The mouthpiece may comprise a filter. The filter may be formed from one or more suitable filter materials. Many such filter materials are known in the art. In one embodiment, the mouthpiece may comprise a filter formed from cellulose acetate tow.

Elements of the aerosol-generating article (e.g., the aerosol-forming substrate and any other elements of the aerosol-generating article, such as the support element, the aerosol-cooling element, and the mouthpiece) are surrounded by an outer wrapper. The outer wrapper is formed from any suitable material or combination of materials. Preferably, the outer wrapper is cigarette paper.

Aerosol-generating device for illustrating a device for interacting with an aerosol-forming substrate of an aerosol-generating article to generate an aerosol. Preferably, the aerosol-generating device is a smoking device which interacts with an aerosol-generating substrate of the aerosol-generating article to generate an aerosol which is directly inhalable into a user's lungs through a user's mouth. The aerosol-generating device may be a holder for a smoking article.

The heating mode of the aerosol generating device can use the principle of resistance heating, and can also use the principles of infrared heating and electromagnetic induction heating. The resistance heating mainly comprises inner core heating, peripheral heating and internal and external mixed heating. The infrared heating mainly comprises peripheral heating, and is a preferable use scene of the invention. Magnetic induction heating includes induction coils and electromagnetic induction heating substrates, commonly referred to as susceptors, and induction coils are commonly referred to as inductors. The electromagnetic induction heating substrate as part of the heater may be provided on the aerosol-generating device or in the aerosol-generating article. The heater is preferably needle-shaped, bar-shaped, leaf-shaped or tube-shaped.

The aerosol-generating device is a portable or handheld aerosol-generating device that a user may comfortably hold between the fingers of a single hand. The aerosol-generating device may be substantially cylindrical in shape. The aerosol-generating device may have a length of between about 70 mm and about 120 mm.

The power source of the aerosol-generating device may be any suitable power source, for example a direct voltage source, such as a battery. In one embodiment, the power source is a lithium ion battery. Alternatively, the power source may be a nickel metal hydride battery, a nickel cadmium battery, or a lithium-based battery, such as a lithium cobalt, lithium iron phosphate, lithium titanate, or lithium polymer battery. The weight of the power source should be such that the smoking article weight as a whole can be comfortably held between the fingers of a single hand of a user.

While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. An aerosol generating device is characterized by comprising a shell, a heating part, a power supply and a plugging piece;

the shell comprises a proximal end and a distal end, wherein the proximal end is provided with a first opening, and the distal end is provided with a second opening;

the heating part is arranged between the proximal end and the distal end, the heating part comprises a penetrating heating cavity for accommodating aerosol-generating products and a heating piece, the heating piece is electrically connected with the power supply, the aerosol-generating products are removably inserted into the penetrating heating cavity through the first opening, and the plugging piece is arranged at a second opening of the distal end;

the blocking piece comprises a cover head and a support, wherein the cover head comprises a stop part for blocking the second opening, an air inlet part is formed in the stop part, the support comprises a flow guide part, and when a user sucks, air flow can flow through the flow guide part through the air inlet part so as to enter the aerosol generating product.

2. An aerosol-generating device according to claim 1, wherein the cap is provided with a first fixing portion inside the stop portion, and the holder is provided with a second fixing portion, the first fixing portion being interconnected with the second fixing portion.

3. An aerosol-generating device according to claim 2, wherein the first fixing portion is of a hollow structure and the second fixing portion is of a cylindrical structure such that the second fixing portion is interposed within the first fixing portion.

4. An aerosol-generating device according to claim 3, wherein the cap is further provided with a handle on the outside of the stop, through which a user can operate the removal or installation of the closure.

5. An aerosol-generating device according to claim 4, wherein a buffer layer is formed between the inner side of the stopper and the end face of the through-going heating chamber when the closure is mounted on the aerosol-generating device.

6. An aerosol-generating device according to claim 5, wherein the thickness of the buffer layer is at least 2mm.

7. An aerosol-generating device according to any one of claims 1 to 6, wherein the cap is further provided with a diverter portion on the inside of the stop portion, the diverter portion being capable of diverting air entering from the air inlet portion.

8. An aerosol-generating device according to claim 7, wherein the diverter is of a sheet-like configuration arranged circumferentially along the cap and co-operating with the diverter.

9. An aerosol-generating device according to claim 7, wherein the flow guide comprises a plurality of ribs which are evenly distributed circumferentially about the axis of the support, and each rib is streamlined in that the width of each rib varies continuously in the axial direction.

10. An aerosol-generating device according to claim 9, wherein the number of ribs is at least four.