WO2023204626A1

WO2023204626A1 - Smoking article and aerosol-generating device for heating same

Info

Publication number: WO2023204626A1
Application number: PCT/KR2023/005375
Authority: WO
Inventors: 정승규; 권중학; 임동욱; 현승목
Original assignee: 주식회사 이엠텍
Priority date: 2022-04-20
Filing date: 2023-04-20
Publication date: 2023-10-26

Abstract

An embodiment relates to a smoking article and an aerosol-generating device for heating same and, particularly, to a smoking article and an aerosol-generating device for heating same, wherein a porous ceramic moisture absorbent containing or wetted by an aerosol-generating substrate is provided to increase the content of the aerosol-generating substrate. The smoking article according to an embodiment includes: a filter layer; a hollow tube layer having a first hollow space formed in the vertical direction and laminated on the lower end of the filter layer; a porous ceramic absorbent layer laminated on the lower end of the hollow tube layer and including a porous ceramic absorbent containing an aerosol-generating substrate or wetted by the aerosol-generating substrate; and a wrapping part that surrounds the filter layer, the hollow tube layer, and the porous ceramic absorbent layer to maintain a laminated structure.

Description

Smoking articles and aerosol-generating devices that heat them

The embodiment relates to a smoking article and an aerosol-generating device for heating the same, and in particular, a smoking article capable of increasing the content of the aerosol-forming substrate by having a porous ceramic moisture absorbent in which the aerosol-forming substrate is moisture-absorbed or wetted, and an aerosol-generating device for heating the same. It's about devices.

Aerosols are small liquid or solid particles that exist in suspension in the atmosphere and usually have a size of 0.001 to 1.0 ㎛. In particular, there are cases where people inhale aerosols derived from various types of cigarette-type aerosol-generating products. For example, in response to the needs of consumers who prefer cigarette-type regular cigarettes, electronic cigarettes that have the filter part of a regular cigarette and the shape of a cigarette part are also being proposed. This electronic cigarette uses the inhaled substances contained in the cigarette part as electronic cigarettes. When vaporized with a heater, the user inhales it through a filter unit that has the same configuration as a regular cigarette.

The aerosol generating device according to the prior art is provided with a cavity into which a cigarette-type aerosol-generating article is inserted. For example, a pipe-shaped heater is installed on the outer periphery of the cavity to generate aerosol by heating the cigarette-type aerosol-generating article inserted into the aerosol generating device. is provided. Additionally, the aerosol generating device includes a battery for supplying power to the heater, and a control unit configured to control power supplied from the battery to the heater. In the above-described prior art, power is supplied to the heater from the battery under the control of the control unit, and the cigarette-type aerosol-generating article is heated by the heat generated from the heater, thereby generating aerosol from the aerosol-generating substrate in the cigarette-type aerosol-generating article.

Conventional cigarette-type aerosol-generating products are provided with a medium layer into which pulverized leaf tobacco such as cut candles or tobacco is inserted, but the amount of nicotine that can be contained in this medium layer increases without increasing the volume of the medium layer depending on the characteristics of the pulverized leaf tobacco. There is a problem that is difficult to solve.

Examples include a smoking article capable of increasing the content of the aerosol-forming substrate by providing a porous ceramic moisture absorbent in which the aerosol-forming substrate is moisture-absorbed or wet, which is formed with a hollow in the vertical direction or includes a susceptor, and an aerosol-generating device for heating the same. The purpose is to provide.

The smoking article of one embodiment of the present invention includes a filter layer, a hollow tube layer in which a first hollow in the vertical direction is formed and laminated on the bottom of the filter layer, and a hollow tube layer that is laminated on the bottom of the hollow tube layer and absorbs moisture from the aerosol-forming substrate or absorbs the aerosol-forming substrate. It is characterized by comprising a porous ceramic hygroscopic material layer including a porous ceramic hygroscopic material wetted by, and a wrapping portion surrounding the filter layer, the hollow tube layer, and the porous ceramic hygroscopic material layer to maintain the laminated structure.

In addition, the smoking article of the present invention, in an embodiment, is characterized in that the wrapping part includes a first wrapping part made of a waterproof material surrounding a porous ceramic moisture absorber layer.

In addition, in the smoking article of the present invention, in an embodiment, the wrapping part further includes a hollow tube layer and a second wrapping part surrounding the porous ceramic moisture absorber layer wrapped in the first wrapping part.

In addition, in the smoking article of the present invention, in an embodiment, the wrapping part further includes a filter layer, a hollow tube layer wrapped around the second wrapping part, and a third wrapping part surrounding the porous ceramic moisture absorber layer.

Additionally, the smoking article of the present invention, in an embodiment, the porous ceramic moisture absorbent may be selected from magnesium silicate, aluminum silicate, silicate silicate, zeolite, titanium oxide, titanium carbide, zirconia, silica, silicon carbide, silicon nitride, mullite, cordierite, carbonization. It is characterized by comprising at least one selected from the group consisting of tungsten, zirconium carbide, and aluminum nitride.

In addition, the smoking article of the present invention, in an embodiment, is characterized in that the pore size of the porous ceramic moisture absorber is in the range of 1 to 100 ㎛, or the porosity is in the range of 30 to 70%.

In addition, in the smoking article of the present invention, in an embodiment, the aerosol-forming substrate that is absorbed or wetted by the porous ceramic moisture absorbent is flavoring, nicotine, VG (vegetable glycerin), PG (propylene glycol), flavoring agent, caffeine, tonic, CBD. A substance containing at least one of the following is characterized in that it is in a liquid or gel state.

In addition, in the smoking article of the present invention, in an embodiment, the porous ceramic moisture absorbent layer is characterized in that it includes a leakage prevention layer that is mounted on the bottom of the porous ceramic moisture absorber and prevents leakage of liquid from the aerosol-forming substrate.

The smoking article of the present invention is also characterized in that, in an embodiment, the leak-proof layer is formed of a waterproof membrane or silicone with pores.

In addition, the smoking article of the present invention, in an embodiment, is characterized in that the porous ceramic moisture absorbent has a cylindrical shape with a diameter in the range of 3 to 7 mm.

In addition, the smoking article of the present invention, in an embodiment, is characterized in that the porous ceramic moisture absorbent is provided with a second hollow in the vertical direction that communicates with the first hollow.

The smoking article of the present invention is also characterized in that, in an embodiment, the porous ceramic hygroscopic body comprises a magnetic material capable of being inductively heated.

In addition, the smoking article of the present invention is characterized in that, in an embodiment, the porous ceramic hygroscopic material layer includes a susceptor made of a magnetic material that is combined with the porous ceramic hygroscopic material and generates heat by induction heating.

In addition, the smoking article of the present invention, in an embodiment, is characterized in that the susceptor is coupled to the inside of the porous ceramic moisture absorber.

Additionally, the smoking article of the present invention, in an embodiment, is characterized in that the susceptor is coupled to the outside of the porous ceramic moisture absorbent.

In addition, in the smoking article of the present invention, in an embodiment, the porous ceramic moisture absorber layer is located in the second hollow and is characterized in that it further includes a susceptor made of a magnetic material that generates heat by induction heating.

In addition, in the smoking article of the present invention, in an embodiment, the porous ceramic moisture absorber layer is a plate-shaped susceptor inserted into the second hollow, a tubular susceptor inserted into the second hollow and having a through hole, or a second hollow susceptor. It is characterized by including a band-type susceptor inserted at the bottom.

In addition, the aerosol generating device of an embodiment of the present invention includes a heating space into which a smoking article of an embodiment is inserted, an airflow path that communicates the heating space and the external space, and is formed to protrude upward from the heating space, so that at least a portion of the second portion is formed. It has a main body including a heating part inserted into the hollow interior, and the heating space is characterized by having an insertion hole into which a smoking article is inserted on one side of the main body.

In addition, in the aerosol generating device of the present invention, in an embodiment, the air flow path includes an inlet portion penetrating the outside from a side other than the side where the insertion hole is formed, and a separation portion that communicates between the inlet portion and the heating space through a plurality of paths. , the upper end of the separator is close to the heating space, the lower end of the separator is close to the inlet, and each of the plurality of paths of the separator communicates with the heating space at the top of the separator and meets at the bottom of the heating space.

In addition, in the aerosol generating device of the present invention, in the embodiment, the central axis of the heating unit is located at the midpoint of the plurality of paths, the central axis of the heating unit is equal to or parallel to the central axis of each of the first hollow and the second hollow, and the heating unit is located inside It is an empty structure, characterized by a space formed inside to accommodate the medium.

In the embodiment, the content of the aerosol-forming substrate can be increased by absorbing moisture from the aerosol-forming substrate, which is formed with a hollow in the vertical direction or including a susceptor, or by providing a porous ceramic moisture absorbent in which the aerosol-forming substrate is wet, and the airflow path is hollow. It increases aerosol emissions by communicating through and has the effect of enabling heating using various heating methods (resistance heating, induction heating).

1 is a vertical cross-sectional view of smoking

articles

1a, 1b according to an embodiment;

2 is a vertical cross-sectional view of a smoking article 1c according to another embodiment;

3 is a vertical cross-sectional view of a smoking article 1d according to another embodiment;

Figure 4 shows other examples of the porous ceramic moisture absorber layer of Figure 1;

Figure 5 shows further embodiments of the porous ceramic moisture absorber layer 32 of Figure 3;

Figure 6 shows another embodiment of the porous ceramic moisture absorber layer 32 of Figure 3;

Figure 7 is a cross-sectional view of an aerosol-generating device 100 for heating the smoking article 1d of the embodiment of Figure 3.

Hereinafter, embodiments are described in detail through the drawings. However, this is not intended to be limiting to specific embodiments, and the described embodiments should be understood to include various modifications, equivalents, and/or alternatives of the embodiments. In connection with the description of the drawings, similar reference numbers may be used for similar components.

In this document, expressions such as “have,” “may have,” “includes,” or “may include” refer to the existence of the corresponding feature (e.g., a numerical value, function, operation, or component such as a part). , and does not rule out the existence of additional features.

In this document, expressions such as “A or B,” “at least one of A or/and B,” or “one or more of A or/and B” may include all possible combinations of the items listed together. . For example, “A or B”, “at least one of A and B”, or “at least one of A or B” (1) includes at least one A, (2) includes at least one B, or (3) it may refer to all cases including both at least one A and at least one B.

As used herein, expressions such as "first", "second", "first", or "second" may describe various elements in any order and/or importance, and may refer to one element as another. It is only used to distinguish from components and does not limit the components.

Terms used in this document are merely used to describe specific embodiments and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions, unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the technical field described in this document. Among the terms used in this document, terms defined in general dictionaries may be interpreted to have the same or similar meaning as the meaning they have in the context of related technology, and unless clearly defined in this document, they may be interpreted in an ideal or excessively formal sense. It is not interpreted. In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of this document.

Figure 1 is a vertical cross-sectional view of

smoking articles

1a, 1b according to an embodiment.

The smoking article 1a of Figure 1 (a) includes a filter layer 10, which is a mouth filter, on the upper side, a hollow tube layer 20 laminated at the bottom of the filter layer 10, and a bottom of the hollow tube layer 20. The laminated structure is formed by surrounding the porous ceramic absorbent layer 30, which is laminated and absorbs moisture from the aerosol-forming substrate or is wetted by the aerosol-forming substrate, the filter layer 10, the hollow tube layer 20, and the porous ceramic absorbent layer 30. It is comprised of wrapping

parts

51, 53, and 55 that maintain it.

The filter layer 10 is a filter that functions as a mouthpiece, allowing aerosols to pass through and preventing liquid from entering. The filter layer 10 may be made of pulp and may be made in a cylindrical or tube shape. The filter layer 10 may be made of materials such as acetate, paper, and PP.

The hollow tube layer 20 has a first hollow 22 extending in the vertical direction formed therein to provide a passage for the aerosol to move. It contains PLA and lowers the temperature of the aerosol, preventing burns when the user inhales the aerosol. You can also prevent it. The hollow tube layer 20 may be made of cellulose acetate, and the hollow tube layer 20 functioning as a cooling structure may be made of pure polylactic acid or by combining polylactic acid with other degradable polymers.

The porous ceramic hygroscopic layer 30 is a porous ceramic hygroscopic material that further increases hygroscopic power through surface tension using hydrophilic properties, which retains, absorbs, or wets the liquid or gel-type aerosol-forming base material by capillary action caused by pores formed in the porous ceramic. It includes a sieve (30a). The porous ceramic moisture absorber 30a is made of magnesium silicate, aluminum silicate, silicate silicate, zeolite, titanium oxide, titanium carbide, zirconia, silica, silicon carbide, silicon nitride, mullite, cordierite, tungsten carbide, zirconium carbide, and aluminum nitride. It is composed of at least one selected from the group.

The size (diameter) of the pores of the porous ceramic hygroscopic body 30a is determined depending on the aerosol being hygroscopic. In this embodiment, the pore size of the porous ceramic hygroscopic body 30a is in the range of 1 to 100 ㎛, and the porous ceramic hygroscopic body 30a The porosity of the moisture absorbent 30a is in the range of 30 to 70%. The porous ceramic moisture absorber 30a preferably has a cylindrical shape and has a diameter in the range of 3 to 7 mm.

In this specification, the aerosol-forming base is a substance containing at least one of fragrance, nicotine, VG (vegetable glycerin), PG (propylene glycol), flavoring agent, caffeine, tonic, CBD, etc., and is in liquid, gel, or liquid form at room temperature. Maintains solid state. The aerosol-forming substrate exists in a liquid, gel, or solid state at room temperature and has the property of being vaporized into an aerosol in the temperature range of 150 ℃ to 300 ℃. In particular, the above-mentioned porosity is related to the amount of the aerosol-forming substrate contained or contained in the porous ceramic hygroscopic body 30a, and a larger amount of the aerosol-forming substrate is contained in the porous ceramic hygroscopic body compared to the sheath layer of the prior art with the same volume. It may be contained in (30a).

The above description of the material and pores of the porous ceramic hygroscopic body 30a may also be applied to the porous ceramic hygroscopic body of other embodiments below.

The wrapping parts (51, 53, 55) surround the porous ceramic moisture absorber layer (30) and include a first wrapping part (51) to prevent leakage of the aerosol-forming base material when heated by a heating device, and a hollow tube layer (20). ) and a second wrapping part 53 that surrounds the porous ceramic absorbent layer 30 wrapped by the first wrapping part 51 and maintains the laminated structure of the hollow tube layer 20 and the porous ceramic absorbent layer 30. ) and the filter layer 10 and the hollow tube layer 20 surrounded by the second wrapping part 53 and the porous ceramic moisture absorber layer 30, and the filter layer 10 and the hollow tube layer 20 and the porous It may be configured to include a third wrapping part 55 that maintains the laminated structure of the ceramic moisture absorber layer 30. This incremental laminated structure of the wrapping part can be viewed as a preferred embodiment because it increases manufacturing convenience.

In particular, the first wrapping part 51 is made of paper or membrane material with a waterproof coating to prevent leakage of the aerosol-forming base material. The second and

third wrapping parts

53 and 55 may be made of plain paper or porous paper.

The smoking article 1a according to (a) of FIG. 1 may be heated by being inserted into a heating space in a heating device to which a resistance heating method such as a film heater is applied. In another embodiment, the smoking article (1a) according to (a) of FIG. 1 may be inserted into a heating space in a heating device to which an induction heating method is applied. can be inserted into To apply this induction heating method, the porous ceramic hygroscopic body 30a of the porous ceramic hygroscopic body layer 30 may be composed of a magnetic material that can be inductively heated (for example, in the form of powder). At this time, the wrapping part is preferably made of paper without metal components to prevent loss of magnetic induction heating efficiency.

The smoking article 1b according to Figure 1(b) has a porous ceramic absorbent layer 31 instead of the porous ceramic absorbent layer 30 shown in Figure 1(a).

The porous ceramic moisture absorber layer 31 includes a susceptor 40 inside the porous ceramic moisture absorber 31a. The susceptor 40 is for induction heating and is made of a magnetic material, for example, a metal with a magnetic component such as SPCE, SPCC, Kanthal, etc. The susceptor 40 may have, for example, a rod-shaped, needle-shaped, or plate-shaped structure. The susceptor 40 may be coupled to the inside or outside of the porous ceramic moisture absorber 31a depending on the embodiment.

Figure 2 is a vertical cross-sectional view of a smoking article 1c according to another embodiment. In order to show the assembly relationship, the third wrapping part 55 and the leakage prevention layer 60 are shown in the drawing before assembly.

This embodiment is similar to the smoking article 1b according to (b) of FIG. 1, but as shown in the figure, the porous ceramic moisture absorbent layer 31 prevents the aerosol-forming substrate from leaking from the bottom of the porous ceramic moisture absorbent 31a. The difference is that a leakage prevention layer 60 is provided to do this. The leak-proof layer 60 is made of a waterproof membrane with microholes or a silicone material with pores, allowing airflow to penetrate the porous ceramic absorbent layer 31 through the leak-proof layer 60 to form an airflow pass. .

Figure 3 is a vertical cross-sectional view of a smoking article 1d according to another embodiment. This embodiment is similar to the smoking article 1a according to (a) of FIG. 1, but as shown in the figure, the porous ceramic hygroscopic body 32a of the porous ceramic hygroscopic body layer 32 has upper and lower sections communicating with the first hollow 22. The difference is that it has a second hollow 35 in the direction.

The second hollow 35 of the porous ceramic moisture absorber 32a communicates with the first hollow 22 of the hollow tube layer 20, has the same diameter, and is parallel to the central axis of the second hollow 35. 1 The central axis of the hollow 22 may be the same. Accordingly, the airflow entering the second hollow 35 can be sucked in by the user through an airflow path extending to the first hollow 22 and the filter layer 10. A heating unit (induction heating, resistance heating) of the aerosol generating device may be inserted into the second hollow 35. In this way, the second hollow 35 serves as an airflow path and can provide a space where a susceptor, which will be described later, is mounted.

Figure 4 shows other examples of the porous ceramic moisture absorber layer of Figure 1. This embodiment is for a case where a smoking article is inserted into the heating space of a heating device using an induction heating method and heated. The material and characteristics of the porous ceramic hygroscopic body of FIG. 4 are the same or similar to the materials and characteristics of the porous ceramic

hygroscopic bodies

30a and 31a of FIG. 1 (a) and (b), and the material of the susceptor is also They are the same or similar, but the structure and mounting location of the susceptor are different. Figures 4 (a) to (f) are perspective views from the bottom of the porous ceramic moisture absorber layer 30.

The porous ceramic moisture absorber layer in (a) of FIG. 4 includes a cylindrical porous ceramic moisture absorber (30a) and a plurality of band-shaped susceptors (41a) mounted on the outer surface of the porous ceramic moisture absorber (30a) at a predetermined distance from each other. ) and a leakage prevention layer 60 formed on the bottom of the porous ceramic moisture absorber 30a.

The porous ceramic moisture absorber layer in (b) of FIG. 4 includes a cylindrical porous ceramic moisture absorber (30a) and a single band-shaped susceptor (41a) formed close to the bottom of the outer surface of the porous ceramic moisture absorber (30a). It consists of:

The porous ceramic hygroscopic body layer in (c) of FIG. 4 includes a cylindrical porous ceramic hygroscopic body 30a and a plurality of band-shaped susceptors 41a mounted at regular intervals on the outer surface of the porous ceramic hygroscopic body 30a. And, it is configured to include at least one bar-shaped susceptor (41b) that connects the plurality of band-shaped susceptors (41a) vertically and electrically.

The porous ceramic hygroscopic material layer in (d) of FIG. 4 includes a cylindrical porous ceramic hygroscopic material 30a and a plurality of rod-shaped structures extending in the vertical direction on the outer surface of the porous ceramic hygroscopic material 30a and spaced apart from each other at a predetermined distance. It consists of a scepter (41c).

The porous ceramic moisture absorber layer in (e) of FIG. 4 includes a cylindrical porous ceramic moisture absorber (30a) and a cross-shaped susceptor (41d) mounted on the lower side of the porous ceramic moisture absorber (30a) to cross each other. do. The ends of the cross-shaped susceptor 41d extend to the outer surface of the porous ceramic moisture absorber 30a.

The porous ceramic moisture absorber layer in Figure 4 (f) has a cylindrical shape and includes a porous ceramic moisture absorber (30b) with grooves (A) formed along the outer and lower sides, and a groove (A) of the porous ceramic moisture absorber (30b). It is configured to include a U-shaped susceptor (41e) that is inserted and extended.

The leakage prevention layer 60 of Figure 4 (a) may also be applied to each of Figures 4 (b) to (f).

FIG. 5 shows another embodiment of the porous ceramic moisture absorber layer 32 of FIG. 3. Figures 5 (a) to (d) are perspective views from the bottom of the porous ceramic moisture absorber layer 32 including the second hollow 35.

The porous ceramic moisture absorber layers 32 in (a) to (d) of FIGS. 5 are commonly provided with a porous ceramic moisture absorber 32a in the form of a cylindrical tube in which a second hollow 35 is formed in the vertical direction. The second hollow 35 is in communication with the first hollow 22 of the hollow tube layer 20, and the diameter of the second hollow 35 is larger than or equal to the diameter of the first hollow 22, so that the porous ceramic The aerosol generated in the moisture absorbent layer 32 by heating by the heating device is concentrated in the first hollow 22 and discharged.

The porous ceramic moisture absorber layer 32 in (a) of FIG. 5 includes a leakage prevention layer 62 on the bottom of the porous ceramic moisture absorber 32a. The leak prevention layer 62 may be made of the same material as the leak prevention layer 60, but may be made of a tube-shaped plate.

The porous ceramic moisture absorber layer 32 in (b) of FIG. 5 includes a plate-shaped susceptor 42 extending in the vertical direction across the second hollow 35 of the porous ceramic moisture absorber 32a. At least a portion of both ends of the plate-shaped susceptor 42 is in contact with the inner surface of the second hollow 35 of the porous ceramic moisture absorber 32a, is inserted and fixed into the interior, or is press-fitted into the inner surface of the second hollow 35. By being fixed or press-fitted, the heat energy generated in the plate-shaped susceptor 42 during induction heating is transferred or diffused to the porous ceramic moisture absorber 32a, so that the moisture-absorbed aerosol-forming substrate can be converted into an aerosol and discharged.

The porous ceramic moisture absorber layer 32 shown in (c) of FIG. 5 is inserted and mounted into the second hollow 35 of the porous ceramic moisture absorber 32a, and includes a tubular susceptor 43 with a cavity formed in the vertical direction. The outer surface of the tubular susceptor 43 is mounted and fixed in contact with the inner surface of the second hollow 35, so that the heat energy generated by the tubular susceptor 43 during induction heating is transferred to the porous ceramic moisture absorber 32a. transmitted or spread. In addition, the tubular susceptor 43 is provided with a plurality of through holes 43a that communicate with the exterior and interior (second hollow) of the tubular susceptor 43. An aerosol is generated by induction heating in the tubular susceptor 43 within the porous ceramic moisture absorber 32a and is discharged into the second hollow 35 through the through holes 43a, thereby discharging the hollow tube layer 20. Along the first hollow 22, it moves to the filter layer 10 and is discharged to the outside.

The vertical height of the tubular susceptor 43 is less than or equal to the height of the second hollow 35, and is at least half of the second hollow 35.

The porous ceramic moisture absorber layer 32 in (d) of FIG. 5 includes a band-shaped or ring-shaped susceptor 44 that is inserted and mounted at the lower end of the second hollow 35 of the porous ceramic moisture absorber 32a. The outer surface of the band-shaped susceptor 44 is mounted and fixed in contact with the inner surface of the second hollow 35, so that the heat energy generated by the band-shaped susceptor 44 during induction heating is absorbed into the porous ceramic moisture absorber 32a. ) is transmitted or spread.

The vertical height of the band-shaped susceptor 44 is smaller than the height of the tubular susceptor 43 and smaller than the height of the second hollow 35, and the band-shaped susceptor 44 is provided with the above-described through hole 43a. There is no need to. However, the band-type susceptor 44 may also have a through hole.

The leakage prevention layer 62 of Figure 5 (a) may also be applied to each of Figures 5 (b) to (d).

Figure 6 is another example of the porous ceramic moisture absorber layer 32 of Figure 3. In particular, this embodiment is similar to the embodiment of Figure 5 (b), but the plate-shaped susceptor 42 crosses the second hollow 35 and extends further, as much as the diameter of the porous ceramic moisture absorber 32a. The difference is that it is extended.

Each of the above-described ceramic moisture absorbers (30a), (31a), and (32a) may be provided with a plurality of holes or grooves perforated from the outer surface toward the inside, and the diameters of the holes range from 100 ㎛ to 2000 ㎛, The area of the holes ranges from 10 to 35% of the total outer surface area.

The aerosol generating device 100 includes a heating space 120 including an insertion hole 122 into which the smoking article 1d is inserted on one side of the main body 101, and an airflow path communicating the heating space 120 and the external space ( 130 and a main body 101 having a heating part 124 protruding upward from the heating space 120.

The insertion hole 122 of the heating space 120 has a diameter equal to or larger than the diameter of the smoking article 1d, and a heating part 124 is formed on the lower side of the heating space 120. The heating space 120 has a horizontal cross-section equal to or similar to that of the smoking article 1d.

The airflow path 130 includes an inlet 132 that penetrates the outside from a side other than the side where the insertion hole 122 is formed, and a plurality of paths 134a between the inlet 132 and the heating space 120, ( It is provided with a separation part 134 communicating through 134b). The upper end of the separator 134 is close to the heating space 120, and the lower end of the separator 134 is close to the inlet 132, forming a plurality of

paths

134a and 134b of the separator 134. ) Each communicates with the heating space 120, which is the top of the separation unit 134, and meets at the bottom of the heating space 120.

The heating unit 124 is mounted in the heating space 120 and is inserted into the second hollow 35 when the smoking article 1d is inserted into the heating space 120. The diameter of the heating unit 124 (or the diameter of the circumscribed circle) is formed to be smaller than the diameter of the second hollow 35, and the horizontal cross-section of the heating unit 124 may have a circular, polygonal, or star-shaped shape.

The upper end of the heating unit 124 is located within the second hollow 35 and is installed in the heating space 120 at a height that does not protrude into the first hollow 22. In addition, the lower end of the heating unit 124 is not inserted into the second hollow 35, so that the air or airflow flowing into the heating space 120 is heated during the heating operation of the heating unit 124, thereby heating the heated air. Allow the airflow to flow into the second hollow (35). A protrusion 136 for limiting the insertion height of the heating unit 124 into the second hollow 35 of the porous ceramic moisture absorber layer 32 of the smoking article 1d will be formed on the inner surface of the heating space 120. It may be possible.

The heating unit 124 may receive power from a control device (not shown) and directly perform resistance heating. In addition, the heating unit 124 is a magnetic material, and an induction heating coil (not shown) is provided outside the heating space 120. The control device applies alternating current power to the induction heating coil, and the heating unit 124 is heated by induction. Heating may also be performed. That is, the heating unit 124 performs a heating operation (resistive heating or induction heating) to heat the space between the second hollow 35 and the heating unit 124 or the inner surface of the second hollow 35, at least The inner surface of the second hollow 35 becomes screenless, generating an aerosol.

Since the outer surface of the heating unit 124 is in contact with the air or air current in the second hollow 35 or the porous ceramic moisture absorber 32a, the heat energy of the heating unit 124 is transmitted to the second hollow through the air or air current. The heating unit 124 has a hollow structure so that it is transmitted or diffused to the porous ceramic moisture absorber 32a, which is the inner surface of (35), and a medium (for example, air or other gas or A space in which the heat medium is accommodated is formed.

The central axis of the heating unit 124 is located at the midpoint of the plurality of

paths

134a and 134b, and the central axis of the heating unit 124 is the central axis of each of the first hollow 22 and the second hollow 35. Equal to or parallel to, the airflow discharged from the plurality of

paths

134a and 134b moves upward while contacting the outer surface of the heating unit 124 and the inner surface of the second hollow 35 and is discharged. do. As described above, by the heating operation of the heating unit 124, the aerosol generated at least on the inner surface of the second hollow 35 flows through the upward first hollow 22 and the filter layer 10 along with the airflow. It is absorbed into external space or by the user.

As explained above, it is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the claims. Of course, such changes are within the scope of the claims.

Claims

a filter layer;

a hollow tube layer formed with a first hollow in the vertical direction and laminated at the bottom of the filter layer;

a porous ceramic moisture absorbent layer laminated on the bottom of the hollow tube layer and including a porous ceramic moisture absorbent that absorbs moisture from the aerosol-forming substrate or is wetted by the aerosol-forming substrate;

A smoking article comprising a wrapping portion that surrounds the filter layer, the hollow tube layer, and the porous ceramic absorbent layer to maintain the laminated structure.
According to claim 1,

A smoking article characterized in that the wrapping part includes a first wrapping part made of a waterproof material surrounding a porous ceramic moisture absorbent layer.
According to claim 2,

Smoking article characterized in that the wrapping part further includes a hollow tube layer and a second wrapping part surrounding the porous ceramic moisture absorber layer wrapped in the first wrapping part.
According to claim 3,

A smoking article characterized in that the wrapping part further includes a third wrapping part surrounding the filter layer, the hollow tube layer wrapped around the second wrapping part, and the porous ceramic moisture absorber layer.
According to claim 1,

The porous ceramic moisture absorber is selected from the group consisting of magnesium silicate, aluminum silicate, silicate silicate, zeolite, titanium oxide, titanium carbide, zirconia, silica, silicon carbide, silicon nitride, mullite, cordierite, tungsten carbide, zirconium carbide, and aluminum nitride. A smoking article characterized by comprising at least one or more.
According to claim 1,

A smoking article characterized in that the pore size of the porous ceramic moisture absorbent is in the range of 1 to 100 ㎛, or the porosity is in the range of 30 to 70%.
According to claim 1,

The aerosol-forming substrate that is absorbed or soaked in the porous ceramic moisture absorbent is a substance containing at least one of fragrance, nicotine, VG (vegetable glycerin), PG (propylene glycol), flavoring agent, caffeine, tonic, and CBD, and is in liquid form or A smoking article characterized in that it is in a gel state.
According to claim 1,

A smoking article characterized in that the porous ceramic moisture absorbent layer includes a leakage prevention layer mounted on the bottom of the porous ceramic moisture absorber to prevent liquid from leaking into the aerosol-forming substrate.
According to claim 8,

A smoking article characterized in that the leak-proof layer is formed of a waterproof membrane or silicone with pores.
According to claim 1,

A smoking article characterized in that the porous ceramic moisture absorbent has a cylindrical shape with a diameter ranging from 3 to 7 mm.
According to claim 1,

A smoking article characterized in that the porous ceramic moisture absorbent has a second cavity in the vertical direction communicating with the first cavity.
According to claim 1,

A smoking article characterized in that the porous ceramic hygroscopic body comprises a magnetic material capable of being inductively heated.
According to claim 1,

A smoking article characterized in that the porous ceramic hygroscopic material layer includes a susceptor made of a magnetic material that is combined with the porous ceramic hygroscopic material and generates heat by induction heating.
According to claim 13,

The susceptor is a smoking article characterized in that it is bonded to the inside of a porous ceramic moisture absorber.
According to claim 13,

A susceptor is a smoking article characterized in that it is bonded to the outside of a porous ceramic moisture absorber.
According to claim 11,

A smoking article characterized in that the porous ceramic moisture absorber layer is located in the second hollow and further includes a susceptor made of a magnetic material that generates heat by induction heating.
According to claim 16,

The porous ceramic moisture absorber layer includes a plate-shaped susceptor inserted into the second hollow, a tubular susceptor inserted into the second hollow and having a through hole, or a band-shaped susceptor inserted at the bottom of the second hollow. Characterized by smoking articles.
A main body including a heating space into which the smoking article according to claim 11 is inserted, an airflow path communicating the heating space with an external space, and a heating portion formed to protrude upward from the heating space and at least a portion of which is inserted into the second hollow. Equipped with

An aerosol generating device characterized in that the heating space has an insertion hole into which a smoking article is inserted on one side of the main body.
According to claim 18,

The airflow path has an inlet part that penetrates the outside on the other side other than the one side where the insertion hole is formed, and a separation part that communicates between the inlet part and the heating space through a plurality of paths,

The upper end of the separator is close to the heating space, the lower end of the separator is close to the inlet, and each of the plurality of paths of the separator communicates with the heating space at the top of the separator and meets at the bottom of the heating space. .
According to claim 18,

The central axis of the heating unit is located at the midpoint of the plurality of paths, and the central axis of the heating unit is equal to or parallel to the central axis of each of the first hollow and the second hollow,

An aerosol generating device characterized in that the heating unit has an empty structure inside and a space in which the medium is accommodated is formed.