CN217609542U

CN217609542U - Aerosol generating system

Info

Publication number: CN217609542U
Application number: CN202221011193.7U
Authority: CN
Inventors: 李斌; 尹献忠; 王爽; 张展; 张柯; 齐伟; 张智轩; 王兵
Original assignee: China Tobacco Henan Industrial Co Ltd; Zhengzhou Tobacco Research Institute of CNTC
Current assignee: China Tobacco Henan Industrial Co Ltd; Zhengzhou Tobacco Research Institute of CNTC
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-10-21
Anticipated expiration: 2032-04-28

Abstract

The utility model belongs to the technical field of the aerosol, concretely relates to aerosol generation system. An aerosol-generating system comprising: an aerosol-generating device having a smoking cup and an aerosol-generating article having a functional segment; the side wall of the functional section is provided with a side wall through hole, and a first air channel is formed from the outer side of the side wall through hole to the air channel at the inner side of the side wall through hole; there is a gap between the inner cup wall and the outer aerosol-generating article wall: when the side wall through hole is positioned in the cigarette cup, a pressure balance airflow channel is formed from the side wall through hole to the part of the gap at the bottom of the cigarette cup; when the sidewall through-holes are located outside the bowl, a gap between the inner bowl wall and the outer aerosol-generating article wall forms a pressure-balanced airflow channel. The pressure balance airflow channel can avoid the phenomenon that smoke is not easy to diffuse when no external airflow passes through the smoke generating section.

Description

Aerosol generating system

Technical Field

The utility model belongs to the technical field of the aerosol, concretely relates to aerosol generation system.

Background

A number of technical documents relating to aerosol-generating devices and systems have been disclosed, including for example heated non-combustible aerosol-generating systems. Starting from three combustion factors, three ways of realizing non-combustion are divided into three ways in principle, one is to replace combustible, the other is to reduce the temperature to be below the ignition point of the combustible, and the other is to reduce the oxygen content of a combustion improver. Patents 202010241328.8 and 202010241686.9 disclose oxygen-deficient heated cigarette assemblies and sealed, heat-not-burn cigarettes and assemblies that achieve reduced oxygen levels by sealing the smoking section and changing the air flow path to provide no continuous oxygen supply in the area of the smoking section.

Above-mentioned technical scheme makes outside air current not flow through the section of fuming, consequently does not have the convection current heat transfer for the section of fuming temperature field is more even, and the energy management degree of difficulty reduces, and the release of fragrant material is more abundant. However, to ensure that airflow does not pass through the smoking segment, special sealing structures are added, such as: providing a seal on the aerosol generating device, which adds to some extent complexity to the manufacture of the appliance; or directly to the distal lip end of the smoking segment, which adds complexity to the manufacture of the aerosol-generating article. And the durability of the sealing structure is poor.

In addition, for oxygen-deficient heating processes, smoke migration within the smoking section will be difficult due to the lack of airflow through the tobacco, and the smoke will be readily "trapped" within the smoking section. Although the aroma substances are released sufficiently, compared with the conventional heated cigarette products, the generation and extraction mechanism of the aerosol of the closed type heated non-combustible cigarette is changed, the diffusion speed of the aroma substances is not consistent, and the uniformity and consistency of the smoke are required to be further improved.

In order to solve the above problems, the utility model is provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a first aspect provides an aerosol generating system, it includes: an aerosol-generating device 1 and an aerosol-generating article 2;

the aerosol-generating device 1 comprises: a smoking cup 1-1 having side walls and a bottom wall, with an aerosol-generating article receiving cavity therein;

the aerosol-generating article 2 comprises a smoking segment 2-1 and a functional segment 2-2 arranged coaxially from the distal lip end towards the proximal lip end; the functional section 2-2 comprises a cavity section 2-2-1 with a cavity, and a through side wall through hole 2-2-2 is formed in the side wall of the cavity section 2-2-1; a first air flow channel 4 is formed by the air channel penetrating from the outer side of the side wall through hole 2-2-2 to the inner side of the side wall through hole 2-2-2;

at least a portion of the distal labial end of the aerosol-generating article 2 is located within the cup 1-1, there being a gap between the inner wall of the cup 1-1 and the outer wall of the aerosol-generating article 2:

when the side wall through hole 2-2-2 is positioned in the smoking cup 1-1, a pressure balance airflow channel 5 is formed from the side wall through hole 2-2-2 to the part of the gap at the bottom of the smoking cup 1-1;

when the sidewall through holes 2-2-2 are located outside the cup 1-1, the gap between the inner wall of the cup 1-1 and the outer wall of the aerosol-generating article 2 forms a pressure-equalizing air flow channel 5.

The side walls and/or distal lip of the smoking segment 2-1 are air permeable. The distal lip end of the smoking segment 2-1 may be open or provided with a breathable paper.

The interface of the pressure balance airflow channel 5 and the smoking segment 2-1 is arranged at the far lip end of the smoking segment 2-1 as far as possible. For example: the pressure balance airflow channel 5 is arranged on the end face of the far lip end of the smoking section 2-1 or the pressure balance airflow channel 5 is arranged on the side wall of the far lip end of the smoking section 2-1. Thus, if the gas in the pressure balance airflow channel 5 flows through the smoking section 2-1, the gas will flow through the whole smoking section 2-1, and the influence on the temperature field distribution of the smoking section 2-1 is small. If the side wall of the smoking segment 2-1 other than the far lip end is subjected to air inlet, the temperature upstream of the air inlet point is less affected, the temperature downstream of the air inlet point is more affected, and the temperature field in the smoking segment 2-1 is more affected as a whole.

Preferably, the part of the gap between the sidewall through-holes 2-2-2 and the opening of the bowl 1-1 forms a common airflow channel 3.

Preferably, the axial distance between the side wall through hole 2-2-2 and the end surface of the smoking section 2-1 near the lip end is smaller than the axial distance between the side wall through hole and the end surface of the cavity section 2-2-1 near the lip end.

Preferably, the side wall through holes 2-2-2 are uniformly distributed along the circumferential direction of the side wall of the cavity section 2-2-1.

Preferably, the number of the sidewall through holes 2-2-2 is not less than one, and the axial positions of all the sidewall through holes 2-2-2 are the same.

Of course, the axial positions of all sidewall vias 2-2-2 may be different.

The side wall through hole 2-2-2 can form any angle with the side wall of the cavity section 2-2-1. In other words, the orientation of the sidewall via 2-2-2 may be arbitrary.

Preferably, the number of the side wall through holes 2-2-2 is 2-8, and the aperture is 0.2-1.0 mm.

Preferably, the vertical distance between the central axis of the side wall through hole 2-2-2 and the end surface of the smoking segment 2-1 near the lip end is 0-15 mm.

Preferably, the inner wall of the cup 1-1 is provided with a grip 1-2 for gripping the aerosol-generating article 2.

Preferably, the clamping part 1-2 is at least one fixing rib which protrudes radially relative to the inner wall of the cigarette cup 1-1.

Preferably, the fixing rib is a strip-shaped protrusion, a spiral protrusion or a point-shaped protrusion.

The axial length of the fixing rib is not limited.

The smoking section 2-1 is internally provided with a smoking material 2-1-1.

A second aspect of the invention provides a method of regulating an aerosol state using the aerosol-generating system of any of the first aspects by regulating the draw resistance of the first air flow channel 4 and the pressure-balanced air flow channel 5.

Preferably, the method for adjusting the suction resistance of the first air flow channel 4 comprises the following steps: adjusting the size of the gap between the inner wall of the cup 1-1 and the outer wall of the aerosol-generating article 2 or adjusting the structural parameters of the sidewall through-holes 2-2-2;

the method for adjusting the suction resistance of the pressure balance airflow channel 5 comprises the following steps: adjusting the size of a gap between the inner wall of the cup 1-1 and the outer wall of the aerosol-generating article 2, adjusting the gap between the distal lip end of the smoking segment 2-1 and the bottom wall of the cup 1-1, adjusting the air permeability of the distal lip end of the smoking segment 2-1, or adjusting the air permeability of the outer wall of the smoking segment 2-1.

Preferably, the method for adjusting the suction resistance of the pressure balance airflow channel 5 is to adjust the gap between the distal lip end of the smoking segment 2-1 and the bottom wall of the smoking cup 1-1 or adjust the air permeability of the distal lip end of the smoking segment 2-1, that is, the pressure balance airflow channel 5 is arranged at the distal lip end of the smoking segment 2-1. The beneficial effect of this scheme is that, the gas flow through balanced airflow channel is whole the section of fuming, and is less to the distribution influence of section of fuming temperature field.

The specific method for adjusting the structural parameters of the sidewall through hole 2-2-2 comprises the following steps: the aperture, number of holes, hole position and hole orientation of the sidewall through-holes 2-2-2 are adjusted.

In addition, the method for regulating and controlling the aerosol state further comprises the following steps:

adjusting the heating profile of the heat sources 1-3 within the aerosol generating device 1, etc.;

adjusting the inner diameter of the cup 1-1, the outer diameter of the aerosol-generating article 2, the configuration of the grip 1-2, the height, width and length of the radial projection of the retaining rib, etc.;

adjusting the porosity of the smoking material 2-1-1 in the smoking segment 2-1, and the like.

Preferably, the smoking material 2-1-1 comprises one or more of shredded tobacco, shredded flakes, tobacco particles, herbal particles, gels, and the like.

The herbal granules are granules of herbal plants, such as tea granules and the like.

Of course, the smoking material 2-1-1 may also be other aerosol generating materials.

Herein, when the aerosol-generating device 1 and the aerosol-generating article 2 are used, the direction of the end close to the user's lips is referred to as "near lip end", and the end away from the user's lips is referred to as "far lip end".

Herein, the direction close to the central axis of the cup 1-1 is referred to as "inner", and the direction away from the central axis of the cup 1-1 is referred to as "outer".

The aerosol of the present invention can also be called as smoke.

The technical scheme can be freely combined on the premise of no contradiction.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses an aerosol generation is provided with first airflow channel 4 and pressure balance airflow channel 5 in order to let in the air in aerosol generation goods 2 in the system. The first airflow channel 4 does not flow through the smoke generating segment 2-1 and functions as: the amount of oxygen provided for the smoking section 2-1 is reduced, oxygen-poor heating of the smoking section 2-1 is realized, and meanwhile, under the suction action of a user, the external air enters the cavity section from the first airflow channel 4 and then moves towards the near lip end, so that the smoke of the smoking section can be extracted and carried. The pressure balance airflow channel 5 flows through the smoke generating section 2-1 and has the following functions: balancing the pressure change of the smoking segment 2-1 during smoking. During smoking, the pressure of the smoking segment 2-1 will decrease as aerosol material escapes, and as smoking time increases, the pressure of the smoking segment 2-1 will continue to decrease, resulting in a gradual reduction in the escape kinetics of aerosol material. The existence of the pressure balance airflow channel 5 can supplement the pressure of the fuming section 2-1, and can avoid the phenomena of smoke confinement and difficult diffusion of smoke caused by no external airflow of the fuming section 2-1. In colloquial terms, without the pressure-equalizing airflow channel 5 (i.e., the distal lip or sidewall seal of the smoking segment 2-1), the smoke generated by heating the smoking segment 2-1 will only be "pulled" by the above-described extraction action to migrate downstream. With the pressure-balancing airflow channel 5, the external atmospheric pressure directly acts on the distal lip end or the side wall of the smoking segment 2-1, and when a user sucks, in addition to the pulling effect, the function of pushing smoke inside the smoking segment 2-1 towards the downstream can be generated. The smoke is pulled forwards and pushed backwards, so that the smoke can be more favorably migrated to the downstream.

In conclusion, the first airflow channel 4 and the pressure balance airflow channel 5 can realize oxygen-poor heating of the smoke generating section 2-1 and can also realize sufficient diffusion and migration of smoke in the smoke generating section 2-1.

2. In addition, the utility model discloses can also adjust and control the proportion of admitting air of two passageways through adjusting the resistance to suction of first air current passageway 4 and pressure balance air current passageway 5, this proportion can be from 100 between freely adjusting to 1 to 100, can make the oxygen volume that gets into fuming section 2-1 adjust at will promptly. The utility model discloses can heat under the complete oxygen isolation condition (when the section of fuming 2-1 is heated the flue gas pressure that produces just equals external atmospheric pressure, can accomplish outside air "press and do not go into" in pressure balance airflow channel 5 and section of fuming 2-1 interface department, can accomplish the complete oxygen isolation to section of fuming 2-1 this moment) and heat under the complete air oxygen content (when first airflow channel 4 resistance of inhaling is greater than pressure balance airflow channel 5 resistance of inhaling far away promptly). To sum up, the utility model discloses the proportion of admitting air of two passageways is adjusted at will between these two extreme values of 100 to 1. Therefore, the utility model discloses can regulate and control the formation process of aerosol, improve the aerosol state, promote the sensory quality of flue gas.

3. The utility model discloses a do not set up seal structure in aerosol generating device 1 or the aerosol generating article 2 and separate the oxygen to fuming section 2-1, consequently do not have strict requirements to the device seal, this can improve aerosol generating device 1's durability. The aerosol-generating article 2 is also easy to manufacture on an industrial scale, as it does not require the distal labial end of the smoking segment 2-1 to be sealed.

4. The utility model discloses can realize flue gas sensory quality's change through simple parameter adjustment (for example adjust lateral wall through-hole 2-2-2's structural parameter etc.), easily the diversified design of product.

Drawings

Fig. 1 is a schematic perspective view of a smoking cup 1-1 according to a first embodiment of the present invention.

Fig. 2 is a schematic three-dimensional structure view of a smoking cup 1-1 according to a second embodiment of the present invention.

Fig. 3 is an axial sectional view of a second embodiment of the smoking cup 1-1 of the present invention.

Fig. 4 is an axial sectional view of the heat source 1-3 and the bowl 1-1 with the heat source 1-3 as a central heating element.

Figure 5 is an axial cross-section of the heat source 1-3 and the bowl 1-1 when the heat source 1-3 is a circumferential heating element.

Figure 6 is an axial cross-section of a first aerosol-generating article 2 of the invention, the functional section 2-2 not comprising the filter section 2-2-3.

Figure 7 is an axial cross-section of a second aerosol-generating article 2 according to the invention, the functional section 2-2 comprising a filter section 2-2-3.

Figure 8 is a perspective view of the aerosol-generating article 2 of figure 6 inserted into the aerosol-generating device 1 of figure 1.

Fig. 9 is an axial cross-sectional view corresponding to fig. 8.

Fig. 10 is a top view corresponding to fig. 8.

Figure 11 is an axial cross-section of another such aerosol-generating article 2 after insertion into the aerosol-generating device 1 of figure 1.

Fig. 12 is a perspective view corresponding to fig. 11.

List of reference numerals:

1. 1-1 aerosol generating device, 1-1 smoking cup, 1-2, clamping part, 1-3, heat source, 2, aerosol generating product, 2-1, smoking section, 2-1-1, smoking substance, 2-1-2, first wrapping piece, 2-2, functional section, 2-2-1, cavity section, 2-2-2, side wall through hole, 2-2-3, filtering section, 2-2-4, second wrapping piece, 3, common airflow channel, 4, first airflow channel, 5 and pressure balance airflow channel.

Detailed Description

The present invention will be described in further detail with reference to examples.

It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. Those skilled in the art will recognize that the specific techniques or conditions, not specified in the examples, are according to the techniques or conditions described in the literature of the art or according to the product specification. The materials or equipment used are not indicated by manufacturers, but are all conventional products available by purchase.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "coupled" to another element, it can be directly coupled to the other element or intervening elements may also be present. Further, "coupled" as used herein may include wirelessly coupled.

In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "coupled" and "provided" are to be interpreted broadly, and may be, for example, a fixed coupling, a detachable coupling, or an integral coupling; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention is understood by those of ordinary skill in the art according to the specific circumstances.

It will be understood by those within the art that, unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

An aerosol-generating system, comprising: an aerosol-generating device 1 and an aerosol-generating article 2;

the aerosol-generating article 2 comprises a smoking segment 2-1 and a functional segment 2-2 arranged coaxially from the distal lip end towards the proximal lip end; the functional section 2-2 comprises a cavity section 2-2-1 with a cavity, and a through side wall through hole 2-2-2 penetrating through the side wall of the cavity section 2-2-1; a first air flow channel 4 is formed by the air channel penetrating from the outer side of the side wall through hole 2-2-2 to the inner side of the side wall through hole 2-2-2;

when the sidewall through hole 2-2-2 is positioned in the bowl 1-1, as shown in fig. 9, a pressure balance air flow channel 5 is formed from the sidewall through hole 2-2-2 to the part of the gap at the bottom of the bowl 1-1;

when the sidewall through-holes 2-2-2 are not located within the cup 1-1, the gap between the inner wall of the cup 1-1 and the outer wall of the aerosol-generating article 2 forms a pressure-equalizing air flow channel 5, as shown in figure 11.

In fig. 9, the part of the gap between the sidewall through-hole 2-2-2 and the opening of the bowl 1-1 forms a common airflow channel 3. In fig. 11, the common airflow passage 3 does not exist.

Preferably, the axial distance between the side wall through hole 2-2-2 and the end surface of the smoking section 2-1 near the lip end is smaller than the axial distance between the side wall through hole and the end surface of the cavity section 2-2-1 near the lip end. I.e. the side wall through hole 2-2-2 is closer to the smoking segment 2-1.

Preferably, the number of the side wall through holes 2-2-2 is more than one, the central axes of all the side wall through holes 2-2-2 are positioned on the same plane, and the plane is perpendicular to the central axis of the cavity section 2-2-1.

Of course, the sidewall through holes 2-2-2 may not be evenly distributed along the circumferential direction of the sidewall of the functional segment 2-2. The central axes of all the sidewall through holes 2-2-2 may not be located on the same plane, i.e., the orientation of the sidewall through holes 2-2-2 may be arbitrary.

Preferably, the vertical distance between the central axis of the side wall through hole 2-2-2 and the end surface of the smoking segment 2-1 near the lip end is 0-10 mm.

Preferably, the cavity segment 2-2-1 in the functional segment 2-2 is located at the distal labial end.

In a preferred embodiment, the functional segment 2-2 further comprises: a filter segment 2-2-4 located near the lip end of the cavity segment 2-2-1, as shown in fig. 7. The filter segments 2-2-4 may be filled with fiber segments, such as acetate tow or filter cotton.

Preferably, the inner wall of the cup 1-1 is provided with a grip 1-2 for gripping the aerosol-generating article 2. The specific structure of the holding portion 1-2 may be any as long as the function of holding the aerosol-generating article 2 is achieved. The grip 1-2 serves to prevent movement of the aerosol-generating article 2.

Preferably, the clamping part 1-2 is at least one fixing rib which protrudes radially relative to the inner wall of the cigarette cup 1-1. More preferably, the fixing rib is a strip-shaped protrusion, a spiral protrusion or a point-shaped protrusion, for example: the fixing ribs are strip-shaped bulges which are distributed along the inner wall of the cigarette cup 1-1 at intervals in the circumferential direction, or the fixing ribs are spiral bulges which are distributed along the inner wall of the cigarette cup 1-1 in a spiral shape.

The number of the fixing ribs is one. Or a plurality of fixing ribs, for example 3-8 fixing ribs, are arranged at intervals. The side walls of the retaining ribs are cambered surfaces to facilitate airflow therethrough without damaging the outer wall of the aerosol-generating article 2.

Preferably, the radial protruding height of the fixing rib changes along the axial length of the cigarette cup 1-1. For example, the radial protrusion height of the fixation bead tapers from the distal lip end to the proximal lip end to ease insertion of the aerosol-generating article 2 into the cup 1-1.

Preferably, the fixing rib is arranged close to the lip end of the cigarette cup 1-1.

In a preferred embodiment, the fixing rib extends to the lip end of the cigarette cup 1-1.

In an alternative embodiment, the fixing rib does not extend to the lip-proximal end of the bowl 1-1. The proximal labial end of the cup 1-1 has a chamfer to facilitate insertion of the aerosol-generating article 2.

Fig. 1 is a schematic perspective view of a smoking cup 1-1 according to a first embodiment of the present invention. In fig. 1, the fixing ribs are three strip-shaped bulges which are circumferentially distributed at intervals along the inner wall of the cigarette cup 1-1. The side wall of the fixing rib is an arc surface, in particular a semi-cylindrical surface.

The height, width and axial length of the strip-like projections can be adjusted to accommodate aerosol-generating articles 2 of different diameters.

In a second embodiment, the fixing rib is a spiral protrusion spirally distributed along the inner wall of the cigarette cup 1-1. The helical lobes have spaces therebetween to allow airflow therethrough.

The pitch, thread length, thread height of the helical projection may be adjusted to accommodate aerosol-generating articles 2 of different diameters.

Fig. 2 is a schematic perspective view of a smoking cup 1-1 according to a second embodiment of the present invention.

Specifically, the cup 1-1 is a hollow cylindrical cup-shaped structure. Of course, the cup 1-1 may have other shapes. For example, the cup 1-1 is a hollow cylindrical structure, and the cross section of the cup 1-1 is an ellipse or a polygon, etc.

In a preferred embodiment, the aerosol-generating device 1 further comprises a heat source 1-3. The heat source 1-3 may be a central heating element located in the centre of the bowl 1-1, as shown in figure 4. The central heating element may be a heating rod or the like. Alternatively, the heat source 1-3 is a circumferential heating element located on the inner wall of said bowl 1-1, as shown in figure 5. The circumferential heating element may be a heat pipe or the like.

Figure 4 is an axial cross-section of the heat source 1-3 and the bowl 1-1 with the heat source 1-3 as the central heating element.

Preferably, the aerosol-generating article 2 has the following structure: the cavity section 2-2-1 is abutted against the smoking section 2-1.

Figure 6 is an axial cross-section through a first aerosol-generating article 2 of the invention, the functional section 2-2 not comprising the filter section 2-2-3. Specifically, the functional section 2-2 consists of a second wrapping piece 2-2-4 and a hollow pipe wrapped in the second wrapping piece. A cavity is formed in the hollow tube. The through hole of the tube wall of the hollow tube and the through hole of the second wrapping piece 2-2-4 are communicated to form a side wall through hole 2-2-2. The hollow tube may be made of any material, for example, paper or polymer. The second wrapper 2-2-4 may be made of any material, such as paper, polymer, etc., and may be specifically tipping paper. The distal labial end and the proximal labial end of the functional segment 2-2 are both open.

The aerosol-generating article 2 consists of a first wrapper 2-1-2 and a smoking material 2-1-1 therein. The first wrapper 2-1-2 may be a formed paper. Both the distal labial end and the proximal labial end of the aerosol-generating article 2 are open. The forming paper is made of an air-tight material or a material with certain air permeability.

Figure 7 is an axial cross-section of a second aerosol-generating article 2 according to the invention. The difference between fig. 7 and fig. 6 is: the functional section 2-2 of fig. 7 comprises a filter section 2-2-3.

Figure 8 is a perspective view of the aerosol-generating article 2 of figure 6 inserted into the aerosol-generating device 1 of figure 1. The aerosol-generating device 1 comprises a cup 1-1 and also comprises other conventional components, such as a battery, a controller, etc., which are not illustrated in fig. 8. The side wall through hole 2-2-2 is positioned inside the cigarette cup 1-1.

Fig. 9 is an axial cross-sectional view corresponding to fig. 8. The arrows in fig. 9 illustrate the common airflow passage 3, the first airflow passage 4, and the pressure-equalizing airflow passage 5.

Fig. 10 is a top view corresponding to fig. 8. As can be seen in fig. 10, the aerosol-generating article 2 is held by the retaining ribs. Ambient air flow enters the aerosol-generating article receiving chamber from the gap between the inner wall of the cup 1-1 and the outer wall of the aerosol-generating article 2 and is split to a first air flow channel 4 and a pressure equalising air flow channel 5.

Preferably, the smoking material 2-1-1 comprises one or more of cut tobacco, shredded tobacco sheet, tobacco flake, tobacco granule, herbal granule, gel, etc. The herbal granules are granules of herbal plants, such as tea granules and the like. Of course, the smoking material 2-1-1 may also be other aerosol generating materials. The smoking material 2-1-1 may be distributed sporadically or preformed.

Figure 11 is an axial cross-section of another such aerosol-generating article 2 after insertion into the aerosol-generating device 1 of figure 1. The side wall through hole 2-2-2 is positioned outside the cigarette cup 1-1. The gap between the entire inner wall of the cup 1-1 and the outer wall of the aerosol-generating article 2 forms a pressure-equalizing air flow channel 5. In fig. 11, the common airflow passage 3 does not exist.

The smoking segment 2-1 in fig. 9 is lengthened or the smoking cup 1-1 is shortened, so that the side wall through hole 2-2-2 is positioned outside the smoking cup 1-1.

Fig. 12 is a perspective view corresponding to fig. 11.

A method of regulating aerosol conditions using the aerosol-generating system described above by regulating the draw resistance of the first airflow channel 4 and the pressure equalising airflow channel 5.

Specifically, the method for adjusting the suction resistance of the first air flow channel 4 includes: adjusting the size of the gap between the inner wall of the cup 1-1 and the outer wall of the aerosol-generating article 2 or adjusting the structural parameters of the sidewall through-holes 2-2-2;

the method for adjusting the suction resistance of the pressure balance airflow channel 5 comprises the following steps: adjusting the size of a gap between the inner wall of the smoking segment 2-1 and the outer wall of the aerosol-generating article 2, adjusting the gap between the distal lip end of the smoking segment 2-1 and the bottom wall of the smoking segment 1-1, adjusting the air permeability of the outer wall of the smoking segment 2-1, or adjusting the porosity of the smoking substance 2-1-1 in the smoking segment 2-1.

adjusting the heating profile of the heat source 1-3 in the aerosol-generating device 1, etc.;

the inner diameter of the cup 1-1, the outer diameter of the aerosol-generating article 2, the configuration of the grip 1-2, the height, width and length of the radial projection of the fixation rib, etc. are adjusted.

When the aperture of the side wall through hole 2-2-2 is larger than the gap between the far lip end of the smoking section 2-1 and the bottom wall of the smoking cup 1-1, and when the aperture of the side wall through hole 2-2-2 is larger than the gap of the outer wall of the smoking section 2-1, the suction resistance of the first airflow channel 4 is smaller than that of the pressure balance airflow channel 5. In this case, most of the air entering the bowl 1-1 flows to the first air flow path 4, and the remaining small air flows to the pressure-equalizing air flow path 5. Most of the air will flow to the first air flow channel 4, which has the advantages of: the oxygen amount provided to the smoking section 2-1 is reduced, oxygen-deficient heating of the smoking section 2-1 is realized, so that the heating temperature can be increased without worrying about combustion of the smoking section 2-1, and the release of the aroma substances is more sufficient. A small portion of the air will flow to the pressure-equalizing air flow channel 5, which has the advantage that: a small amount of outside air flow is provided for the smoke generating section 2-1, so that the diffusion and migration of smoke are fully increased, and the uniformity and consistency of the smoke are increased. The existence of the pressure balance airflow channel 5 can avoid the phenomena of flue gas confinement and difficult flue gas diffusion caused when the smoke generating section 2-1 has no external airflow at all.

Claims

1. An aerosol-generating system, comprising: an aerosol-generating device (1) and an aerosol-generating article (2);

the aerosol-generating device (1) comprises: a smoking cup (1-1) having a side wall and a bottom wall, having an aerosol-generating article-receiving cavity therein;

the aerosol-generating article (2) comprises a smoking segment (2-1) and a functional segment (2-2) arranged coaxially from a distal lip end towards a proximal lip end; the functional section (2-2) comprises a cavity section (2-2-1) with a cavity, and a through side wall through hole (2-2-2) is formed in the side wall of the cavity section (2-2-1); a first air channel (4) is formed by the air channel penetrating from the outer side of the side wall through hole (2-2-2) to the inner side of the side wall through hole (2-2-2);

at least a part of the distal labial end of the aerosol-generating article (2) is located within the cup (1-1), there being a gap between the inner wall of the cup (1-1) and the outer wall of the aerosol-generating article (2):

when the side wall through hole (2-2-2) is positioned inside the smoking cup (1-1), a pressure balance airflow channel (5) is formed from the side wall through hole (2-2-2) to the part of the gap at the bottom of the smoking cup (1-1);

when the sidewall through-holes (2-2-2) are located outside the smoking cup (1-1), the gap between the inner wall of the smoking cup (1-1) and the outer wall of the aerosol-generating article (2) forms a pressure-balanced airflow channel (5).

2. An aerosol-generating system according to claim 1, wherein the part of the gap between the sidewall through-holes (2-2-2) and the opening of the cup (1-1) forms a common airflow channel (3).

3. An aerosol-generating system according to claim 1, wherein the axial distance of the side wall through hole (2-2-2) from the labial end face of the smoking segment (2-1) is less than the axial distance from the labial end face of the cavity segment (2-2-1).

4. An aerosol-generating system according to claim 1, wherein the sidewall through holes (2-2-2) are evenly distributed circumferentially along the sidewall of the cavity section (2-2-1).

5. An aerosol-generating system according to claim 1, wherein the number of sidewall through-holes (2-2-2) is not less than one, and the axial positions of all sidewall through-holes (2-2-2) are the same.

6. An aerosol-generating system according to claim 1, wherein the central axis of the through-hole (2-2-2) is at a perpendicular distance of 0-15 mm from the labial end face of the smoking segment (2-1).

7. An aerosol-generating system according to claim 1, wherein the inner wall of the cup (1-1) is provided with a grip (1-2) to grip the aerosol-generating article (2).

8. An aerosol-generating system according to claim 7, wherein the grip (1-2) is at least one fixing rib projecting radially with respect to the inner wall of the cup (1-1), the fixing rib being a strip-shaped protrusion, a helical protrusion or a point-shaped protrusion.