JP7721185B2 - Heated tobacco cartridges - Google Patents

Description

The present invention relates to a cartridge for heated tobacco products that is attached to a heated smoking device equipped with an electrically controlled heating element and used for smoking.

In recent years, tobacco products that use a method of heating a tobacco cartridge containing tobacco ingredients without using a flame and inhaling the vaporized tobacco ingredients have become widely known. In addition, due to the diversification of preferences, cartridge products that allow users to enjoy the aroma and flavor of plants that do not contain tobacco ingredients, like cigarettes, without using a flame, are also becoming known.

For example, Patent Document 1 discloses an aerosol cooling element for an aerosol-generating article. Specifically, it states that "the aerosol cooling element includes a gathered sheet of a biodegradable polymer material" (see claims). The aerosol-generating article, which is a heated tobacco cartridge, has an aerosol-forming substrate, a spacer element, an aerosol cooling element, and a filter arranged in this order from the tip side, and these are wrapped in cigarette paper.

Patent No. 5877618

When the aerosol-forming substrate, which is a filler accumulation, is heated by the heating element of the heated smoking device, an airflow containing the aerosol is generated and flows toward the filter element having the mouthpiece. Because the airflow tends to gather toward the center, impurities tend to concentrate in the center of the filter element as the smoker smokes repeatedly. The concentration of impurities in a specific area of the filter element can affect the fluidity of the airflow or change the taste. Therefore, it is desirable to filter impurities from the airflow using the entire filter element.

The present invention has been made in consideration of the above-mentioned problems, and aims to provide a cartridge for heated tobacco products that disperses the airflow flowing through the filter member so that impurities in the airflow do not concentrate in a specific area.

In order to solve the above problems, the heated tobacco cartridge according to the present invention is a heated tobacco cartridge that is attached to a heated smoking device equipped with an electrically controlled heating element and used for smoking,
The device comprises a filler accumulation body that generates an aerosol when heated by the heating element, a filter member that has a suction port and filters the generated aerosol, and a packaging member that is wrapped around the outer periphery of the filler accumulation body and the filter member, and is characterized by having one or more flow change sections that change the radial vector component of the airflow containing the aerosol that flows from the filler accumulation body toward the suction port side of the filter member.

In addition, the heated tobacco cartridge of the present invention is characterized in that the flow change portion changes the radial vector component of the airflow containing the aerosol in a direction from the inner side to the outer side.

In addition, the heated tobacco cartridge of the present invention is characterized in that the flow change portion is arranged between the filler accumulation body and the filter member in the longitudinal direction of the heated tobacco cartridge, and the flow change portion has an air flow guide portion formed so that the cross-sectional area increases from the filler accumulation body side toward the filter member side.

In addition, the heated tobacco cartridge according to the present invention is characterized in that the airflow guide portion has an uneven portion on the surface that comes into contact with the airflow.

In addition, the heated tobacco cartridge of the present invention is characterized in that the flow change portion has a support portion that supports the filler accumulation adjacent to it, and the support portion has a through hole that communicates with the air flow path when the air flow guide portion is positioned between the filler accumulation and the filter member.

In addition, the heated tobacco cartridge of the present invention is characterized in that the filter member has the flow change portion at the end on the filler accumulation side, and the flow change portion has an airflow guide portion that is formed so that the cross-sectional area increases from the filler accumulation side of the filter member toward the mouthpiece side.

In addition, the heated tobacco cartridge of the present invention is characterized in that the filter members are a first filter member on the inner periphery and a second filter member on the outer periphery, which have different absorption rates for the air flow, and are separated by a separation section that does not allow the air flow to pass through, and the first filter member forms the flow change section with an air flow guide section that is formed so that the cross-sectional area increases from the filler accumulation side toward the mouthpiece side.

Furthermore, in the heated tobacco cartridge according to the present invention, the flow change section is disposed between the filler accumulation and the filter member, and the flow change section has a first flow path member and a second flow path member adjacent to each other along the longitudinal direction, the first flow path member having a first through hole that penetrates the first flow path member in the longitudinal direction and through which the airflow flows, the second flow path member having a second through hole that is disposed at a circumferential position different from the first through hole and penetrates the second flow path member in the longitudinal direction and through which the airflow flows, and the first through hole and the second through hole are communicated at a portion where the first flow path member and the second flow path member are adjacent to each other,
A convection space is formed so as to direct the airflow from the first through-hole toward the inner periphery.

In addition, the heated tobacco cartridge of the present invention is characterized in that the convection space is formed so as to direct the airflow from the first through hole that flows toward the inner periphery to the second through hole, and the second through hole is arranged so as to direct the airflow from the convection space toward the outer periphery.

In addition, the heated tobacco cartridge according to the present invention is characterized in that the second flow path member has a recessed portion on the filter member side of the convection space portion.

According to the heated tobacco cartridge of the present invention, the flow change portion changes the radial vector component of the aerosol-containing airflow, thereby leveling the airflow within the filter element. This allows the airflow to flow using the entire volume of the filter element, preventing impurities from concentrating in a specific area. Furthermore, the airflow's fluidity can be improved to facilitate inhalation, and the impact of impurities on the airflow can be reduced. Additionally, changes in taste due to impurities concentrating in a specific area of the filter element can be reduced.

1 is a cross-sectional view of a heated tobacco cartridge having a filler accumulation body in this embodiment. FIG. 2 is a cross-sectional view showing a usage form of a heated tobacco cartridge. 3(a) and 3(b) are a side view and a front view, respectively, of the packing. FIG. 5A is a cross-sectional view taken along line AA in FIG. 1, and FIG. 5B is a cross-sectional view taken along line BB in FIG. FIG. 10 is an enlarged cross-sectional view of the vicinity of a flow change portion of a second embodiment. FIG. 10 is an enlarged cross-sectional view of the vicinity of a flow change portion of a fourth embodiment. FIG. 13 is an enlarged cross-sectional view of the vicinity of a flow change portion of a fifth embodiment. FIG. 13 is an enlarged cross-sectional view of the vicinity of a flow change portion of the seventh embodiment. FIG. A cross-sectional view of a heated tobacco cartridge having a flow change portion of the eighth embodiment. A cross-sectional view of a heated tobacco cartridge having a flow change portion of the ninth embodiment. FIG. A cross-sectional view of a heated tobacco cartridge having a flow change portion of the 10th embodiment. A cross-sectional view of a heated tobacco cartridge having a flow change portion of the 11th embodiment. 16(a) is a view of the first flow path member as seen from the filter member side, and FIG. 16(b) is a view of the second flow path member as seen from the packing accumulation side. These are cross-sectional views of the flow change portion, a cross-sectional view taken along the A-A section of FIG. 16(b) (FIG. 17(a)), and a cross-sectional view taken along the B-B section of FIG. 16(b) (FIG. 17(b)). 10 is a cross-sectional view of a flow change portion when a recess is provided in the first flow path member. FIG. Cross-sectional view of a heated tobacco cartridge having a flow change portion according to a twelfth embodiment FIG. A cross-sectional view of a heated tobacco cartridge having a flow change portion of the thirteenth embodiment. This is a cross-sectional view taken along line AA in Figure 21. FIG. 22 is an enlarged view of the vicinity of the boundary between the packing accumulation and the flow change section in FIG. 21 . A cross-sectional view of a heated tobacco cartridge having a flow change portion of the 14th embodiment. This is a cross-sectional view taken along line AA in Figure 24. FIG. 25 is an enlarged view of the vicinity of the boundary between the packing accumulation and the flow change section in FIG. 24 .

(Overall configuration of heated tobacco cartridge)
An embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 shows a cross-sectional view of a heated tobacco cartridge 1 having a filler accumulation 10 according to this embodiment. As shown in this figure, the heated tobacco cartridge 1 comprises a substantially cylindrical filler accumulation 10 filled with a large amount of filler 20, and a support member 12 through which airflow from the filler accumulation 10 can pass.
The flow change section 30, which changes the direction of the airflow from the support member 12, and the filter member 14, which has a suction port 14a at one end, are arranged along the longitudinal direction and are integrated by being wrapped in a sheet-like packaging member 16. The packaging member 16 can be made of paper or the like. The flow change section 30 can be made of a resin material. Examples of resin materials that can be used to form the flow change section 30 include polypropylene, polylactic acid, and silicone. However, the flow change section 30 can also be made of other resin materials, or wood, metal (aluminum, etc.), etc.
The directional vector of the aerosol-containing airflow flowing through the heated tobacco cartridge 1 from the filler accumulation 10 toward the mouthpiece 14a of the filter member 14 can be decomposed into an axial vector component, which is a component in the central axis direction along the length of the heated tobacco cartridge 1, a radial vector component, which is a component in the radial direction of the heated tobacco cartridge 1, and a circumferential vector component, which is a component in the circumferential direction of the heated tobacco cartridge 1. In this specification, the term "radial vector component" refers to the component obtained by decomposing the directional vector of the aerosol-containing airflow flowing through the heated tobacco cartridge 1 into a radial component. The radial vector component of the airflow can be either positive or negative. For example, if the direction of the airflow from the center side toward the outer periphery of the heated tobacco cartridge 1 is defined as the positive direction, the radial vector component of the airflow can also be a negative direction, which is a direction from the outer periphery toward the center. Note that the axial vector component also
If the direction of flow toward a is defined as the positive direction, then in a part of the heated tobacco cartridge 1, the direction of flow from the mouthpiece 14a toward the filler accumulation 10 may be the negative direction.

In this embodiment, the heated tobacco cartridge 1 has a diameter of 6.5 mm to 7.5 mm.
The length is formed to be 40 mm to 80 mm. The outer diameter of the heated tobacco cartridge 1 is 6.5
If the length of the heated tobacco cartridge 1 is set in the range of 40 to 7.5 mm, the diameter will be smaller than the insertion part 51 into which the heated tobacco cartridge 1 is inserted, which is provided in the heated smoking device 2, and it will be easier to insert the heated tobacco cartridge 1 into the heated smoking device 2.
If the length is set within the range of 80 mm, the length will be longer than the length of the insertion portion 51 that receives the heated tobacco cartridge 1 provided in the heated smoking device 2, so that even when the heated tobacco cartridge 1 is inserted into the heated smoking device 2, the mouthpiece 14 a can be exposed from the heated smoking device 2.
This allows the smoker to ensure the length necessary for smoking.

(Configuration of Support Member)
The support member 12 inhibits movement of the packing accumulation 10 toward the support member 12, and allows the airflow containing aerosols generated in the packing accumulation 10 to flow toward the filter member 14. The support member 12 is, for example, cylindrical and solid, and is disposed between the packing accumulation 10 and the filter member 14 so that its axial direction is along the central axis. The support member 12 is formed, for example, with an outer diameter of 6.5 mm to 7.5 mm and a length along the central axis of 50 mm or less. Note that the support member 12 may have dimensions different from those described above, as appropriate, depending on its function and configuration.

The support member 12 is made of a resin material. Examples of resin materials that can be used to form the support member 12 include polypropylene, polylactic acid, and silicone. However, the support member 12 may be made of other resin materials, or materials other than resin materials, such as wood or metal (aluminum, etc.), which have a greater cooling effect.

(Configuration of filter member)
The filter member 14 is formed in a cylindrical shape, for example, with a diameter of 6.5 mm to 7.5 mm and a length along the central axis of 50 mm or less. The filter member 14 is formed, for example, using paper or the like. The filter member 14 may also be formed into a cylindrical shape by rolling up a sheet-like member made of paper, or may include a cellulose acetate filter or the like that removes fine particles. The filter member 14 has the function of filtering out some of the fine particles in the water vapor and aerosol generated in the packing accumulation 10.

(Configuration of packing accumulation)
The filler stack 10 is formed by bundling elongated filler materials 20 along their length and wrapping them in a sheet-like packaging material 25 to form a substantially cylindrical shape. The filler materials 20 are made from non-tobacco plants. Details of the filler materials 20 will be described later.

The packing mass 10 has a length of 10 to 25 mm.
Setting the length of the filler accumulation 10 to 25 mm or more ensures the minimum length required for inserting the heating element 50 of the heated smoking device 2. Setting the length of the filler accumulation 10 to 25 mm or less ensures a length sufficient to allow the heat of the heating element 50 of the heated smoking device 2 to reach every corner of the filler 20. The heated tobacco cartridge 1 may have dimensions different from those described above, depending on the shape of the heated smoking device 2.

The outer diameter of the packing assembly 10 is equal to the outer diameters of the support member 12 and the filter member 14.
The outer diameter is approximately constant along the central axis.
A range of 0.5 mm is preferred, and a range of 5.0 mm to 7.0 mm is even more preferred. If the outer diameter is set to 4.0 mm or more, the minimum required amount of aerosol can be generated. Furthermore, if the outer diameter is set to 5.0 mm or more, a sufficient amount of aerosol can be generated. Furthermore, if the outer diameter is set to 7.5 mm or less, the filler accumulation 10 can be attached to the heated smoking device 2. Furthermore, if the outer diameter is set to 7.0 mm or less, the filler accumulation 10 can be easily attached to the heated smoking device 2.

(Use of heated tobacco cartridge)
2 shows a cross-sectional view of the heated tobacco cartridge 1 in use. The heated tobacco cartridge 1 is attached to a heated smoking device 2 for use.
has an insertion section 51 into which the heated tobacco cartridge 1 is inserted. The insertion section 51 is provided with a needle-shaped or blade-shaped heating element 50 that is inserted into the filler accumulation 10 of the inserted heated tobacco cartridge 1. The heating element 50 is electrically controlled by a control section provided inside the heated smoking device 2. The heating element 50 generates heat while inserted into the filler accumulation 10, thereby generating aerosol from the filler accumulation 10. In this state, the smoker can inhale airflow containing aerosol by inhaling through the filter member 14.

(Filling Composition)
3A and 3B show a side view (FIG. 3A) and a front view (FIG. 3B) of the packing 20. As shown in FIG.
As described above, the packing 20 is formed in an elongated shape. Furthermore, the packing 20 is formed so that the dimension a in the long side direction is longer than the dimension b in the short side direction in a cross section perpendicular to the longitudinal direction. FIG. 4 shows a front view of the packing assembly 10. The packing assembly 10 is formed by stacking a large number of packings 20. Most of the packings 20 in the outer periphery are arranged along the circumferential direction. Most of the packings 20 in the central region overlap each other with their long sides to form packing groups, and voids are formed between the packing groups.

The filler 20 is formed by mixing a dried and crushed non-tobacco plant material with an aerosol former that generates an aerosol, microcrystalline cellulose, flavor additives, preservatives, adhesives or thickeners, etc., forming the mixture into a sheet, and then cutting the sheet to a predetermined width and length. Note that the filler 20 is not limited to a long strip, and may have a variety of shapes. For example, it may be formed into a paste or granules.

When the filler 20 is configured in a long shape, the cross section perpendicular to the central axis is substantially rectangular, and the ratio of the long side to the short side of the cross section is preferably in the range of, for example, 1:1 to 30:1. The length of the long side is preferably in the range of 0.1 mm to 7.5 mm, and more preferably 0.1 mm to
The length of the short side is preferably in the range of 0.1 mm to 1.0 mm, and more preferably in the range of 0.1 mm to 0.5 mm. The length of the packing 20 is preferably approximately the same as the length of the packing assembly 10. The length of the packing 20 is 10 mm to 25 mm.
An example of the dimensions of such a packing 20 is a packing having a long side of 1.5 mm, a short side of 0.3 mm, and a length of 12 mm.
is.

Next, a description will be given of specific examples of raw materials used as the packing 20. The packing 20 is made of any one or a combination of the following raw materials.

The filler 20 is made from tobacco plants or non-tobacco plants. Tobacco plants include tobacco leaves, tobacco stems, expanded tobacco, homogenized tobacco, etc. Non-tobacco plants include:
Plants other than tobacco plants are also included. Preferred parts of non-tobacco plants include leaves, flesh,
Seeds, roots (scaly roots, tubers, etc.), stems, tubers, skins (stem bark, bark, etc.), flowers (petals, stamens, pistils, etc.)
, trunks, branches, etc.

In this specification, "plants" refers to a group of organisms, as opposed to animals, and includes not only organisms that have roots and live in a fixed location, such as grass and trees, but also algae such as microalgae and seaweed, and fungi such as mushrooms.

The filler 20 is prepared, for example, by mixing a dried and crushed non-tobacco plant material with an aerosol former that generates an aerosol, microcrystalline cellulose, flavor additives, preservatives, binders, thickeners, etc., as appropriate, and then crushing or classifying the mixture into powder or granules, or forming it into a paste. The aerosol-forming substrate 23 is formed into a sheet, which is then cut into strips or rods of a predetermined width and length.

For example, when the non-tobacco plant part is a leaf, tea can be preferably used. Teas vary not only in the plants that produce tea, but also in the same plant, which can be produced differently depending on the processing method. Specific examples include Japanese tea, black tea, Angelica keiskei tea, sweet tea, Gynostemma pentaphyllum tea, aloe tea,
Ginkgo leaf tea, oolong tea, turmeric tea, oak tea, Eleuthero tea, plantain tea, persimmon tea, chamomile tea, Kawara Kemei tea, quince tea, chrysanthemum tea,
Examples of teas include gymnema tea, guava tea, wolfberry tea, soft leaf tea, black bean tea, Gennoshoko tea, brown rice tea, burdock tea, comfrey tea, bifu tea, cherry blossom tea, saffron tea, shiitake mushroom tea, perilla tea, jasmine tea, ginger tea, horsetail tea, Japanese parsley tea, Swertia japonica tea, buckwheat tea, Aralia aralia tea, dandelion tea, sweet tea, Houttuynia cordata tea, Eucommia ulmoides tea, sword bean tea, elderberry tea, Licorice tea, Job's tears tea, Habu tea, loquat leaf tea, Pu'er tea, safflower tea, pine needle tea, mate tea, barley tea, Megusuri tea, Mugwort tea, eucalyptus tea, Monk fruit tea, rooibos tea, and bitter melon tea. For these teas, used tea leaves can be used. Using tea leaves allows for the effective reuse of expensive teas.

Furthermore, extracts of the above-mentioned non-tobacco plants, so-called extracts and processed products, can also be used. The extracts may be in the form of liquid, starch syrup, powder, granules, solution, etc.

Examples of aerosol formers used as raw materials for the filler 20 include glycerin, propylene glycol, sorbitol, triethylene glycol, lactic acid, diacetin (glycerin diacetate), triacetin (glycerin triacetate), triethylene glycol diacetate, triethyl citrate, isopropyl myristate, methyl stearate, dimethyl dodecanedione, and dimethyl tetradecanedione. Of these, glycerin and propylene glycol are preferred.

The microcrystalline cellulose used as the raw material for the filler 20 is obtained, for example, by partially depolymerizing α-cellulose obtained from the pulp of a fibrous plant with an acid, and is obtained by removing the soluble portion from the cellulose and, if necessary, crystallizing the insoluble portion.

The microcrystalline cellulose may be in the form of powder or may be dispersed in a solvent such as water to form a suspension. In this case, a high-speed stirrer or a high-pressure homogenizer can be used to disperse the microcrystalline cellulose in the solvent.

Furthermore, if necessary, a flavor additive that adds flavor may also be preferably used as an ingredient of the filling 20. Examples of flavor additives include mint, cocoa, coffee, and black tea extracts, and powdered catechins from tea extracts. Preservatives that are used in food products are preferred, such as sorbic acid, potassium sorbate, benzoic acid, and sodium benzoate.

The filler 20 may contain menthol and a water-insoluble cross-linked polymer (preferably polyvinylpolypyrrolidone). By combining menthol with a water-insoluble cross-linked polymer, sublimation of menthol can be effectively suppressed, and the menthol flavor can be maintained for a long period of time. Here, menthol is not limited to that obtained from natural products, but may also be a synthetic product. Peppermint, mint, peppermint oil, and other menthol-containing substances may also be used.

The flavor additive is provided in the filter member 14, for example, by impregnating the wall portion of the filter member 14. The manner in which the flavor additive is provided in the filter member 14 is not limited to this, and for example, the flavor additive may be provided in the filter member 14 by embedding a capsule in which the flavor additive is encapsulated in the wall portion of the filter member 14. Alternatively, a capsule in which the flavor additive is encapsulated may be disposed between the filter member 14 and the packing body 20. When the flavor additive is encapsulated in a capsule, the smoker can break the capsule by pressing it with his or her finger, allowing the aromatic components of the flavor additive to volatilize at the desired time.

Furthermore, when the flavor additive is encapsulated in a microcapsule, for example, the encapsulated microcapsule may be provided in the filler accumulation 10. Of course, the microcapsule may be provided in the support member 12.

Examples of binders or thickeners that can be used as raw materials for the filling 20 include gums such as guar gum, xanthan gum, gum arabic, and locust bean gum; cellulose binders such as hydroxypropyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, and ethyl cellulose; organic acids such as starch, alginic acid, sodium alginate, sodium carboxymethyl cellulose, caramel,
Included are polysaccharides such as conjugate base salts of organic acids such as agar and pectin, and combinations thereof.

(Filling manufacturing process)
The manufacturing process for filler 20 includes a drying and grinding process in which the main raw material, tobacco plants or non-tobacco plants, is dried and ground and weighed, etc.; a preparation process in which other raw materials are pre-treated and weighed, etc.; a mixing process in which the raw materials are mixed to form a composition; and a filler molding process in which the composition is molded.

In the drying and grinding process, the parts of tobacco plants or non-tobacco plants (e.g., leaves, seeds, dried fruits, stems, bark, roots, etc.) that are the main raw materials are processed into a predetermined ground material to prepare a composition. At this time, it is preferable to adjust the moisture content to a level that is convenient for absorbing or supporting the aerosol former, water, and other components that will be added later. In drying, the temperature is set to 60°C or higher and 80°C or lower.
° C. or less. By setting the temperature in this range, it is easy to achieve the desired moisture content while avoiding the dissipation of the necessary flavor components. Furthermore, the drying and pulverizing step can be provided with a sieving step for sieving the pulverized material, so that it can be adjusted to the desired particle size before being introduced into the mixing step.

In the preparation step, it is possible to prepare the raw materials necessary for producing the filler 20. The microcrystalline cellulose described above is weighed in the preparation step and then introduced into the mixing step.

In the mixing step, a conventional mixer can be used. For example, a preferred mode is to mix the raw materials in a mixing vessel while applying shear force with a stirring blade.

In the filler forming process, a composition in which various raw materials are mixed is formed into a thin sheet, which is then cut to form strip- or rod-shaped fillers 20. In this embodiment, multiple roll mills are prepared to form thin sheets. When multiple roll mills are used, the material is compressed by being forced between narrow rolls, and sheared by the difference in roll speed, allowing kneading and dispersion to be carried out, and a sheet of the desired thickness can be formed using a doctor blade.
It is also possible to prepare the film by using a press roller or a press machine.

Furthermore, to obtain a powdered or granular filler 20, it is preferable to appropriately pulverize or classify the composition. The average particle diameter of the powdered or granular filler 20 is preferably, for example, 0.1 to 3.0 mm, and more preferably 0.5 mm or less. The average particle diameter is determined, for example, by the sieving method described in JIS K 0069:1992. In other words, this average particle diameter refers to the diameter corresponding to 50% of the mass obtained by integrating the mass from the larger mesh size in test results using multiple sieves. Alternatively, the particle diameter at 50% of the integrated value in the particle size distribution determined by laser diffraction/scattering method may be used as the average particle diameter.

In the filling forming step, other means may be used, such as forcing the composition through an orifice under pressure. In addition, in the filling forming step, non-tobacco plants, aerosol formers, binders or thickeners, flavor additives, preservatives, etc. may be further added as needed.
Water or the like may be added.

The thickness of the sheet obtained in the filling molding step is preferably in the range of 0.1 mm to 1.0 mm, more preferably in the range of 0.1 mm to 0.5 mm. The obtained sheet is cut to a predetermined width using a cutter, a rotary cutter using a rotary blade, or the like.

Here, when providing the surface of the filler 20 with adhesiveness, there is no particular limitation as long as it is possible to provide adhesiveness by any means, but it is sufficient to attach the above-mentioned binder to at least a part of the surface. By providing adhesiveness, the strip-shaped or rod-shaped filler 20 and the powder, granular or paste-shaped filler 2
When combined with 0, powdery, granular or paste-like filler 20 can be stably held on the surface of strip-shaped or rod-shaped filler 20.

(Configuration of the flow change portion of the first embodiment)
FIG. 5(a) shows a cross-sectional view taken along line A-A in FIG. 1, and FIG. 5(b) shows a cross-sectional view taken along line B-B in FIG. 1. The support member 12 has four through-holes 12a along the circumferential direction. The shape, number, dimensions, and position of the through-holes 12a in the support member 12 are not limited to these, and can be appropriately set to suit the embodiment. The flow change portion 30 has a solid conical shape and is arranged so that its top is located on the support member 12 side and its bottom is located on the filter member 14 side. In this example, the end of the flow change portion 30 is configured to contact the end face of the support member 12, but this is not limiting. For example, a hole that can accommodate the top of the flow change portion 30 may be provided in the end face of the support member 12, allowing the flow change portion 30 to fit into it.

As shown in FIG. 1, the flow change section 30 has an airflow guide section 32 formed so that the cross-sectional area increases from the packing accumulation 10 side toward the filter member 14 side.
The flow path from the filter element 14-side outlet of the support member 12 to the filter element 14 narrows toward the center toward the filter element 14. This allows the flow change section 30 to change the radial vector component of the aerosol-containing airflow that flows longitudinally from the packing material accumulation 10 toward the mouthpiece 14a of the filter element 14. Specifically, as shown by the arrow in the figure, the flow change section 30 changes the radial vector component of the airflow from the inner periphery toward the outer periphery. The flow change section 30 is formed so that its length in the longitudinal direction of the heated tobacco cartridge 1 is 70 mm or less. In this example, it is formed to, for example, 8.0 mm. Of course, the flow change section 30 may be formed to a length other than this. The outer diameter at the position where the flow change section 30 contacts the end face of the filter element 14 is less than 7.5 mm, and preferably 3.
If the outer diameter is set to 3.5 mm or more, a larger amount of airflow can be directed toward the outer periphery of the filter member 14. If the outer diameter is set to 5.0 mm or less,
The size of the flow path required for the airflow can be ensured sufficiently.

The flow change section 30 causes the airflow from the packing accumulation 10 to flow into the outer peripheral region of the filter member 14 and then flow within the filter member 14 so as to gather toward the center toward the mouthpiece 14a. This allows the airflow to flow using the entire volume of the filter member 14, preventing impurities from concentrating in a single area. By leveling the airflow within the filter member 14 in this way, the fluidity of the airflow can be improved, making it easier to inhale, and the impact of impurities on the flow of the airflow can be reduced. This also prevents changes in taste caused by impurities concentrating in one part of the filter member 14.

(Configuration of the flow change portion of the second embodiment)
FIG. 6 shows an enlarged cross-sectional view of the flow change portion 60 and its vicinity in the second embodiment.
The flow change section 60 of the present embodiment has an airflow guide section 61 disposed between the support member 12 and the filter member 14 and formed so that its cross-sectional area increases from the packing accumulation 10 side to the filter member 14 side. The airflow guide section 61 has an uneven portion 62 on the surface that contacts the airflow containing aerosol. The flow change section 60 of the present embodiment has the same configuration as the flow change section 30 of the first embodiment except for the uneven portion 62 on the surface of the airflow flow section 61. In this embodiment, the uneven portion 62 is formed to protrude from the surface of the airflow guide section 61. The uneven portion 62 may be formed continuously along the circumferential direction, or may be formed as multiple independent protrusions. The uneven portion 62 may also be concave. The uneven portion 62 on the surface of the airflow guide section 61 allows the airflow to flow into the filter member 14 in a more diffused state, thereby guiding the airflow over a wider area of the filter member 14. In FIG. 6, two concave-convex portions 62 are arranged in the longitudinal direction of the heated tobacco cartridge 1, and each of the concave-convex portions 62 is an airflow guide portion 61.
However, the present invention is not limited to this, and any protruding height suitable for diffusing the airflow can be set appropriately. For example, the uneven portion 62 on the side closer to the support member 12
can be provided at a position that changes the direction of the airflow containing the aerosol passing through the through holes 12a provided in the support member 12 toward the outer periphery. Furthermore, the shape, number, dimensions, and position of the uneven portion 62 are not limited to those in this example, and any shape, number, dimensions, and position can be set as appropriate.

(Configuration of flow change portion of third embodiment)
The flow change portion 30 in the first embodiment is formed so that the cross-sectional area increases from the packing accumulation 10 side toward the filter member 14 side, but the shape of the flow change portion is not limited to this.
The flow change portion may be formed in a substantially cylindrical shape with a cross-sectional area that does not change from the packing accumulation 10 side toward the filter member 14. In this case, an uneven portion is formed on the peripheral surface of the flow change portion, and the uneven portion
It is possible to change the radial vector component of the airflow from the packing accumulation 10 in a direction from the inner periphery toward the outer periphery. The flow change section of this example has the same configuration as the flow change section 60 of the second example, except that the flow change section is formed in a substantially cylindrical shape whose cross-sectional area does not change along the length.

(Configuration of flow change portion of fourth embodiment)
FIG. 7 shows an enlarged cross-sectional view of the flow change portion 80 and its vicinity in the fourth embodiment. In this embodiment, the support member 12 is not provided. The flow change portion 80 includes a support portion 83 that supports the packing accumulation 10 adjacently and is disposed between the support portion 83 and the filter member 14. The support portion 83 and the airflow guide portion 81 are integrally formed. The length of the flow change portion 80 in the longitudinal direction is 70 mm or less. In this embodiment, the length is, for example, 8.0 mm. Of course, the flow change portion 80 may be formed with other length dimensions. Furthermore, the ratio of the length of the support portion 83 to the airflow guide portion 81 in the longitudinal direction is 1:9 to 9:1, and in this embodiment, the length is, for example, 1:9. Of course, the length ratio of the support portion 83 to the airflow guide portion 81 may be other ratios. The support portion 83 has through holes 84 disposed in the same manner as the support member 12. The shape, number, size and position of the through holes 84 can be set as appropriate for the embodiment. The airflow guide portion 81 is formed so that the cross-sectional area increases from the packing accumulation 10 side toward the filter member 14 side. After passing through the through holes 84 of the support portion 83, the airflow from the packing accumulation 10 is guided by the airflow guide portion 81 toward the filter member 14.
The outer diameter of the airflow guide portion 81 at the position where it contacts the end face of the filter member 14 is less than 7.5 mm, and preferably 3.5 mm to 5.0 mm.
If the outer diameter is set to 5.0 mm or more, a larger amount of airflow can be directed to the outer peripheral side of the filter element 14. Also, if the outer diameter is set to 5.0 mm or less, the size of the flow path required for the airflow can be sufficiently secured. In this way, the flow change portion 80 may function as a support member. Also, a non-penetrating recess may be formed on the surface of the support portion 83 facing the packing accumulation 10. The airflow from the packing accumulation 10 can enter the recess, and some of the impurities contained in the airflow can be attached to the recess. This makes it possible to further reduce the amount of impurities that accumulate in the filter element 14. The shape, number, dimensions and position of the non-penetrating recess may be determined by the following:
This can be set appropriately depending on the embodiment.

(Configuration of flow change portion of fifth embodiment)
FIG. 8 shows an enlarged cross-sectional view of the flow change portion 90 and its vicinity in the fifth embodiment.
As in the fourth embodiment, the airflow guiding portion 91 has an airflow guiding portion 91 and a support portion 93, and the support portion 93 has a through-hole 94. The shape, number, size, and position of the through-hole 94 are not particularly limited and can be set as needed. The airflow guiding portion 91 has an uneven portion 92 formed on its surface.
This allows the airflow from the packing material accumulation 10 to be more diffused. The flow change portion 90 of this example has the same configuration as the flow change portion 80 of the fourth example, except for the presence of the uneven portion 92 on the surface of the airflow guide portion 91. In FIG. 8 , three uneven portions 92 are arranged along the length of the heated tobacco cartridge 1, and each uneven portion 92 protrudes to the same height from the surface of the airflow guide portion 91. However, this is not limited to this, and any protrusion height suitable for diffusing the airflow can be set as appropriate. Furthermore, the shape, number, dimensions, and position of the uneven portions 92 are not limited to those of this example, and any shape, number, dimensions, and position can be set as appropriate. Furthermore, a non-penetrating recess may be formed on the surface of the support portion 93 facing the packing material accumulation 10. The airflow from the packing material accumulation 10 enters the recess, allowing some of the impurities contained in the airflow to adhere to the recess. This reduces the amount of impurities that accumulate in the filter member 14.

(Configuration of the flow change portion of the sixth embodiment)
The flow change portion 90 of the fifth embodiment is formed so that the cross-sectional area increases from the packing accumulation 10 side toward the filter member 14 side, but the shape of the flow change portion is not limited to this.
The flow change portion may have a substantially cylindrical shape whose cross-sectional area does not change from the packing accumulation 10 side toward the filter member 14. In this case, an uneven portion is formed on the peripheral surface of the flow change portion, and the uneven portion can change the radial vector component of the airflow from the packing accumulation 10 in a direction from the inner peripheral side toward the outer peripheral side. Also, a recess may be formed on the surface of the support portion facing the packing accumulation 10.
The airflow from the packing accumulation 10 enters the recessed portion, allowing some of the impurities contained in the airflow to adhere to the recessed portion. This makes it possible to further reduce the amount of impurities that accumulate in the filter member 14. The flow change portion 90 of this example has the same configuration as the flow change portion 80 of the fifth example, except that the flow change portion 90 is formed in a substantially cylindrical shape whose cross-sectional area does not change along the length direction.

(Configuration of the flow change portion of the seventh embodiment)
9 shows an enlarged cross-sectional view of the flow change portion 110 and its vicinity in the seventh embodiment. The flow change portion 110 is disposed adjacent to the filter member 14. A convection space 113 is formed between the support member 12 and the flow change portion 110. The shape of the through-hole of the support member 12,
The number, dimensions, and positions are not limited to these and can be appropriately set depending on the embodiment. Figure 10 shows a front view of the flow change portion 110. The flow change portion 110 has an inner circumferential hole portion 111 and an outer circumferential hole portion 112 in a peripheral region that does not include the center of the circular shape that forms the outer shape. The flow change portion 110 is formed to a length in the longitudinal direction of the heated tobacco cartridge 1 of 5.0 mm or less. In this example, it is formed to 3.0 mm, for example. The outer diameter at the position where the flow change portion 110 contacts the end face of the filter member 14 is less than 7.5 mm, preferably the same dimension as the outer diameter of the filter member 14. Of course, the flow change portion 110 may be formed with a length other than these. The inner circumferential hole portion 111 is a small-diameter round through-hole located near the center of the flow change portion 110. The outer circumferential hole portion 112 is an elliptical through-hole located outer circumferentially of the inner circumferential hole portion 111. Multiple inner circumferential holes 111 and multiple outer circumferential holes 112 are arranged circumferentially. As shown in FIG. 9 , airflow from the packing accumulation 10 flows into the convection space 113 and then into the filter element 14 via the flow change section 110. The inner circumferential hole 111 and the outer circumferential hole 112 of the flow change section 110 are both formed in areas that do not include the central axis of the filter element 14. Furthermore, the outer circumferential hole 112 has a larger area than the inner circumferential hole 111, so that more airflow is guided from the convection space 113 to the outer circumferential side of the filter element 14. This causes the radial vector component of the airflow to change from the inner circumferential side to the outer circumferential side and flow into the filter element 14. The provision of the convection space 113 facilitates the change in the radial vector component of the airflow from the packing accumulation 10, ensuring that the airflow can be reliably guided to the outer circumferential side of the filter element 14. The shape, number, dimensions, and positions of the inner circumferential hole 111 and the outer circumferential hole 112 are not particularly limited and can be set as needed. The length of the convection space 113 in the longitudinal direction can be set to a length suitable for the embodiment within a range of 80 mm or less.

(Configuration of flow change portion of eighth embodiment)
Figure 11 shows a cross-sectional view of a heated tobacco cartridge 1 having a flow change portion 120 of the eighth embodiment. A support member 12 is adjacent to the filler accumulation 10, and a filter member 14 is adjacent to the support member 12. The shape, number, size and position of the through holes in the support member 12 are not limited to these and can be set appropriately depending on the embodiment. The filter member 14 has a flow change portion 120 at the end adjacent to the support member 12 on the filler accumulation 10 side. The flow change portion 120 has a conical airflow guiding portion 121 that is formed so that the cross-sectional area increases from the filler accumulation 10 side of the filter member 14 toward the mouthpiece 14a side. Flow change portion 120
is formed on the end face of the filter element 14 on the side of the filler accumulation 10, at an angle in the range of greater than 0° and less than 90° with respect to the center line in the longitudinal direction of the heated tobacco cartridge 1. If the angle of the flow change portion 120 is set in the range of greater than 0° and less than 90°, a convection space can be formed between the filter element 14, the filler accumulation 10, and the packaging member 16, and part of the airflow can be guided to the outer periphery along the end face of the filter element 14 in the convection space, allowing more airflow to flow to the outer periphery of the filter 14. The angle of the flow change portion 120 is
The angle can be set appropriately according to the embodiment.
2, and the flow change portion 120 of the filter member 14 changes the radial vector component from the inner circumferential side to the outer circumferential side, and the air is guided to the outer circumferential region of the filter member 14. In this way, the flow change portion 120 can also be provided on the filter member 14. In this example, the flow change portion 120
The end of flow change portion 120 is in contact with the end surface of support member 12, but is not limited to this. For example, a hole that receives the top of flow change portion 120 may be provided in the end surface of support member 12, and the end of flow change portion 120 may be fitted into the hole.

(Configuration of flow change portion of ninth embodiment)
12 shows a cross-sectional view of a heated tobacco cartridge 1 having a flow change portion 130 of the ninth embodiment. The filter member 14 has a first filter member 131 on the inner periphery, a second filter member 132 on the outer periphery that has a higher airflow absorption rate than the first filter 131, and a separation portion 133 provided between the first filter 131 and the second filter 132 to prevent additional airflow. The separation portion 133 is made of a material that is impermeable to airflow containing aerosols. The separation portion 1
Examples of materials for forming the filter member 33 include paper, polypropylene, polylactic acid, silicone, wood, and metal (aluminum, etc.).
The filter member 14 includes a first filter 131, a separating portion 133, and a second filter member 132 arranged concentrically from the center toward the outer periphery.
In this example, the second filter member 131 is integrally formed by wrapping the outer periphery of the first filter member 131 with, for example, a sheet-like member. However, the second filter member 131 is not limited to a sheet-like member, and may be formed in a cylindrical shape with the first filter member fitted onto its inner circumferential surface.
The filter member 132 is formed in a cylindrical shape, and the separator 1 is provided on the inner circumferential surface of the second filter member 132.
The outer peripheral surfaces of the first filter member 131 and the second filter member 132 are fitted together to form the filter member 14. In this example, the area ratio of the cross sections perpendicular to the central axis of the first filter member 131 and the second filter member 132 is 1:9 to 9:9.
: 1, and in this example, it is formed to, for example, 1:1. Of course, the first filter member 131
The area ratio of the first filter member 132 to the second filter member 132 may be other ratios.

The support member 12 and the filter member 14 are spaced apart in the longitudinal direction.
The convection space 134 and the filter member 14 form the flow change section 130.
The airflow from the packing accumulation 10 enters the convection space 134, from which most of the airflow flows into the second filter member 132 on the outer periphery, which has a high airflow absorption rate, and the remaining airflow flows into the first filter 131 on the inner periphery. In this way, since more airflow flows from the convection space 134 to the outer periphery of the filter member 14, the radial vector component of the airflow can be changed in a direction from the inner periphery to the outer periphery. The shape, number, and
The dimensions and position are not limited to these and can be set appropriately depending on the embodiment. The length of the convection space 134 in the longitudinal direction can be set appropriately within a range of 80 mm or less, suitable for the embodiment.

(Configuration of flow change portion of 10th embodiment)
FIG. 14 shows a heated tobacco cartridge 1 having a flow change portion 140 according to the tenth embodiment.
1 shows a cross-sectional view of the filter member 14. The filter member 14 has a first filter member 141 on the inner circumferential side, a second filter member 142 on the outer circumferential side, and a separation portion 143, and the second filter member 142 has a higher airflow absorption rate than the first filter member 141. The support member 12 and the filter member 14 are adjacent to each other. The first filter member 141 on the inner circumferential side has an airflow guiding portion 145 formed so that the cross-sectional area increases from the packing accumulation 10 side toward the suction port 14a side, thereby forming a flow change portion 1
40 are formed. As a result, when the airflow from the packing accumulation 10 flows from the support member 12 to the filter member 14, the flow change portion 140 changes the radial vector component from the inner circumferential side to the outer circumferential side, and the airflow is guided by the outer circumferential side. The area ratio of the cross section perpendicular to the central axis of the first filter member 141 and the second filter member 142 is 1:9 to 9:1, and in this example, it is formed to be 1:1, for example. Of course, the area ratio of the first filter member 141 and the second filter member 142 may be other ratios. The shape, number, and
The dimensions and positions are not limited to these and can be set appropriately depending on the embodiment. The filter member 14 of this example has the same configuration as the filter member 14 of the ninth example, except that the first filter member 141 is provided with the airflow guide portion 145.

(Configuration of flow change portion of 11th embodiment)
FIG. 15 shows a heated tobacco cartridge 1 having a flow change portion 150 according to the eleventh embodiment.
The flow change section 150 is disposed between the packing accumulation 10 and the filter member 14, and includes a first flow path member 151 and a second flow path member 155 adjacent to each other along the length direction. The outer diameters of the first flow path member 151 and the second flow path member 155 are 7.5 mm or less,
The combined length of the adjacent first flow path member 151 and second flow path member 155 is 70 mm.
In this example, the thickness is set to, for example, 15.0 mm.
The ratio of the length of the first flow path member 151 to the length of the second flow path member 155 is 1:9 to 9:1, and in this example, it is formed to, for example, 1:1. Of course, the length and area ratio of the first flow path member 151 to the second flow path member 155 may be formed to lengths and ratios other than these.

16(a) and 17(a), the first flow path member 151 has four first through holes 152 in the circumferential direction that penetrate in the length direction and through which the airflow flows. In this example, the cross section of the first through holes 152 in a cross section perpendicular to the central axis of the first flow path member 151 is substantially square, and the size of each first through hole 152 is set to 3.5 mm or less on a side.
A convection space 153 is formed on the end face adjacent to the flow path member 155, and connects the first through holes 152 to each other. In this example, the radial size of the convection space 153 is less than 7.5 mm in diameter, for example, 4.0 mm in diameter.

16(b) and 17(b), the second flow path member 155 has four second through holes 156 in the circumferential direction that penetrate in the length direction and through which airflow flows. The second through holes 156 are arranged at angular positions in the circumferential direction that are different from the first through holes 152, with the first flow path member 151 and the second flow path member 155 adjacent to each other. In this example, the cross section of the second through holes 156 in a cross section perpendicular to the central axis of the second flow path member 155 is approximately rectangular, and each side is 3.5 m long.
Of the end faces of the second flow path member 155, the end face adjacent to the first flow path member 151 is formed with a convection space 157 in the form of an air gap that connects the second through holes 156 to each other. In this example, the radial size of the convection space 157 is less than 7.5 mm in diameter, for example, 4.0 mm in diameter.

By placing the first flow path member 151 and the second flow path member 155 adjacent to each other, the convection spaces 153, 157 of both members are continuous, and the first through hole 152 and the second through hole 156 are communicated with each other. The combined length of the convection space 153 and the convection space 157 is less than 70 mm, for example 3.0 mm. Of course, other lengths and ratios may be used. The airflow from the packing accumulation 10 flows into the first through hole 152 of the first flow path member 151. Since the first through hole 152 is located on the outer periphery of the flow change section 150, the airflow from the first through hole 152 flows in the direction perpendicular to the flow path member 151.
In the convection spaces 153 and 157, the air flows toward the inner periphery. The airflow that flows into the convection spaces 153 and 157 flows into the second through-holes 156. Since the second through-holes 156 are located on the outer periphery of the flow change section 150, the airflow that flows from the convection spaces 153 and 157 to the second through-holes 156 flows toward the outer periphery. In this way, the flow change section 150 has a convection space 153, 157.
3, 157, the radial vector component of the airflow can be changed to allow the airflow to flow into the outer periphery of the filter member 14.

The number, shape, dimensions and positions of the first through holes 152 and the second through holes 156 in the circumferential direction, the angle formed between the first through holes 152 and the second through holes 156 in the circumferential direction, etc. are not limited to this example and can be set arbitrarily.

The convection space 157 of the second flow path member 155 forms a recess 158 in the center of the second flow path member 155. The airflow that has flowed into the convection space 157 collides with a wall surface 158a of the recess 158. This causes some of the impurities in the airflow to adhere to the wall surface 158a,
Impurities reaching the filter member 14 can be reduced.

18 , a recess 154 may be provided on the end surface of the first flow path member 151 on the packing accumulation 10 side. This allows some of the impurities contained in the airflow from the packing accumulation 10 to adhere to the recess 154.

(Configuration of flow change portion of twelfth embodiment)
Next, the flow change portion 160 of the twelfth embodiment will be described. Fig. 19 shows a cross-sectional view of a heated tobacco cartridge 1 having the flow change portion 160 of the twelfth embodiment.
20 shows a front view of the flow change portion 160. The flow change portion 160 is formed by the support member 1
The flow change portion 160 has a plurality of through holes 161 extending in the length direction and arranged in the circumferential direction on the outer periphery.
A conical recess 162 is formed at the end of the packing assembly 10 on the support member 12 side.
The airflow from the side flows from the inner circumferential side to the outer circumferential side toward the through-hole 161 located on the outer circumferential side of the recess 162. Also, part of the airflow flows toward the deepest part of the large recess 162,
Some of the impurities adhere to the recesses 162. This reduces the amount of impurities that reach the filter member 14. In FIG. 19, the recesses 162 are formed so that the cross-sectional area decreases from the packing accumulation 10 side toward the filter member 14 side, but this is not limitative and any shape suitable for allowing some of the impurities to adhere to the recesses can be used as appropriate. For example,
The recesses may have a rectangular cross section or an arcuate cross section. Furthermore, the positions and number of recesses are not limited, and any positions and numbers may be used as appropriate. Furthermore, the shape, number, dimensions, and positions of the through holes 161 provided in the flow change section 160 are not limited to these, and can be set as appropriate depending on the embodiment.

(Configuration of flow change portion of 13th embodiment)
FIG. 21 shows a heated tobacco cartridge 1 having a flow change portion 170 according to the thirteenth embodiment.
21. Also, Fig. 22 shows a cross-sectional view taken along line A-A in Fig. 21. The flow change section 170 is disposed between the packing material accumulation 10 and the filter member 14, and is formed by accumulating a large number of cylindrical members 171. Between adjacent cylindrical members 171 and between the cylindrical members 171 and the packaging member 16, gaps 174 are formed, which serve as flow paths for the airflow from the packing material accumulation 10. The cylindrical members 171 are formed so that their length in the longitudinal direction of the heated tobacco cartridge 1 is 70 mm or less. In this example, they are formed to be 8.0 mm, for example. Of course, the cylindrical members 171 may be formed to have other length dimensions. The outer diameter of the cylindrical members 171 is 3.
If the outer diameter is set to less than 3.5 mm, a large number of cylindrical members 171 can be packed together, and the voids 174 can be dispersed from the center to the periphery.

As shown in Figure 23, wall portion 172, which is the end face of cylindrical member 171 on the packing accumulation 10 side, is adjacent to packing accumulation 10 and prevents the airflow from packing accumulation 10 from proceeding along the length direction. Therefore, the airflow flows through gap 17 while changing its radial vector component.
4. In this way, since more airflow can be made to flow from the flow change section 170 toward the outer periphery of the filter member 14, the radial vector component of the airflow can be changed to a direction from the inner periphery toward the outer periphery.

The cylindrical member 171 can be made of a resin material such as polypropylene or polylactic acid, or a metal material such as aluminum. As the airflow from the packing accumulation 10 flows toward the filter member 14,
The air is gradually cooled by contacting the surface of the cylindrical member 171. Furthermore, some of the impurities contained in the airflow adhere to the cylindrical member 171. This reduces the temperature of the airflow at the filter member 14 and also reduces the impurities that reach the filter member 14.

(Configuration of flow change portion of 14th embodiment)
FIG. 24 shows a heated tobacco cartridge 1 having a flow change portion 180 according to the fourteenth embodiment.
24. Also, FIG. 25 shows a cross-sectional view taken along line A-A in FIG. 24. The flow change section 180 is arranged in the same manner as the flow change section 170 of the thirteenth embodiment, and is formed by accumulating a large number of cylindrical members 181. The cylindrical members 181 have hollow portions 183, which serve as flow paths for the airflow. Furthermore, gaps 184 formed between adjacent cylindrical members 181 and between the cylindrical members 181 and the packaging member 16 also serve as flow paths for the airflow. In this example, the cylindrical members 1
The configuration is the same as that of the thirteenth embodiment except that the element 81 has a hollow portion 183 .

As shown in Figure 26, in this example as well, the wall 182, which is the end face of the cylindrical member 181 on the packing accumulation 10 side, prevents the airflow from flowing in the longitudinal direction, and the airflow enters the gap 184 and hollow portion 183 while changing its radial vector component.
Since more airflow can be directed from 80 toward the outer periphery of the filter member 14, the radial vector component of the airflow can be changed in a direction from the inner periphery toward the outer periphery.

The cylindrical member 181 can be formed from a resin material such as polypropylene or polylactic acid, or a metal material such as aluminum. The airflow from the packing accumulation 10 flows while contacting the outer and inner peripheral surfaces of the cylindrical member 181, and is gradually cooled. In addition, some of the impurities contained in the airflow also adhere to the inner and outer peripheral surfaces of the cylindrical member 181. This reduces the temperature of the airflow in the filter member 14 and reduces the amount of impurities that reach the filter member 14.

Within the scope of the concept of the present invention, a person skilled in the art may conceive of various modifications and alterations, and it is understood that these modifications and alterations also fall within the scope of the present invention. For example, to the above-described embodiments, a person skilled in the art may appropriately add, delete, or modify components, or add, omit, or change conditions of processing, and these modifications are also included within the scope of the present invention as long as they include the gist of the present invention.

In each embodiment of the present invention, an example in which the support member 12 is provided in the heated tobacco cartridge 1 has been described, but the present invention is not limited to this.
The filler accumulation body 10 does not need to have a support member 12, for example, as long as it is fixed between the inner surface of the heated tobacco cartridge 1 and the filler accumulation body 10 so as to prevent it from moving toward the filter member 14 even without the support member 12.

Although the embodiment of the present invention has been described above, the application of the present invention is not limited to this embodiment, and the present invention can be applied in various ways within the scope of its technical concept.

REFERENCE SIGNS LIST 1 heated tobacco cartridge 2 heated smoking device 10 filler accumulation 12 support member 12a through-hole 14 filter member 14a mouthpiece 16 packaging member 20 filler 25 packaging member 30 flow change section 32 airflow guide section 50 heating element 51 insertion section

Claims (2)

a packing material accumulation that generates an aerosol when heated;
a filter member having a mouthpiece;
a packaging material wound around the outer periphery of the packing material accumulation and the filter member,
a cylindrical flow change portion that changes a radial vector component of the airflow containing the aerosol that flows from the packing accumulation toward the suction port side of the filter member,
the flow change portion has a support portion that is adjacent to and supports the packing accumulation,
the support portion has a through hole communicating with a flow path of the airflow when the airflow guide portion is disposed between the packing accumulation and the filter member,
the airflow guide portion has an uneven portion on a surface that contacts the airflow, when viewed in a side cross section in the length direction of the heated tobacco cartridge;
the concave-convex portion is formed on a surface of the airflow guide portion facing the packaging member,
A cartridge for heated tobacco. the flow change section has a first flow path member and a second flow path member adjacent to each other along the longitudinal direction,
The outer diameters of the first flow path member and the second flow path member are 7.5 mm or less,
a combined length of the first flow path member and the second flow path member in the longitudinal direction is 70 mm or less, and a ratio of the length of the first flow path member to the length of the second flow path member in the longitudinal direction is 1:1;
The heated tobacco cartridge according to claim 1 .