Smoking system

Abstract

This smoking system is provided with: a flavor inhaler; a flavor generating article that includes a first flavor source sheet; a heating source that heats the flavor generating article; two or more heat conduction parts that are disposed apart from each other between the first flavor source sheet and a first surface of the heating source; and a first air flow passage that is provided between the first flavor source sheet and the heating source.

Description

Smoking System

[0001] The present invention relates to a smoking system.

[0002] Flavor inhalers for inhaling flavors and the like without burning the material are known. For example, smoking material heating devices are known as such flavor inhalers, which heat smoking material made of tobacco containing volatile components to form an aerosol. A known example of such smoking material is a consumable product that includes a slab of tobacco, a spacer, and a filter (see Patent Document 1).

[0003] International Publication No. 2019 / 162497

[0004] An object of the present invention is to provide a smoking system having a new configuration.

[0005] According to a first aspect, there is provided a smoking system including a flavor inhaler, a flavor-generating article including a first flavor source sheet, a heat source for heating the flavor-generating article, two or more heat-conducting sections spaced apart from one another between the first flavor source sheet and a first surface of the heat source, and a first air flow path provided between the first flavor source sheet and the first surface of the heat source.

[0006] According to the first aspect, since the first air flow path is provided between the first flavor source sheet and the first surface of the heat source while heat from the heat source is transferred to the first flavor source sheet via the heat conduction section, the amount of air passing through the first flavor source sheet in contact with the first flavor source sheet can be increased, thereby enabling the vapor or aerosol generated by the flavor-generating article to be efficiently delivered to the user and increasing the amount of vapor or aerosol supplied.

[0007] The first flavor source sheet may have a contact portion that contacts the heat conductive portion, and an aerosol-generating surface that is adjacent to the contact portion and does not contact the heat conductive portion.

[0008] In this case, a first air flow path can be defined by the heat source and the aerosol-generating surface of the first flavor source sheet. Also, in this case, the first flavor source sheet can generate vapor or aerosol on the aerosol-generating surface that is not in contact with the heat conductive portion, so that the vapor or aerosol generated on the aerosol-generating surface can be efficiently delivered to the user through the first air flow path.

[0009] The heat conducting portion may include at least one of the group consisting of carbonate, ceramic, carbon, and metal.

[0010] In this case, since the heat conductive portion has a considerable strength, it is possible to prevent the heat conductive portion from collapsing and closing the first air flow path. Also, since the heat conductive portion has a considerable thermal conductivity, it is possible to efficiently conduct heat generated in the heat source to the first flavor source sheet. If the heat conductive portion is inorganic, it is possible to prevent the heat conductive portion itself from burning.

[0011] The heat-conducting portion may include calcium carbonate.

[0012] In this case, the heat conductive portion can be supported on the first flavor source sheet, simplifying the configuration of the heat source. Also, calcium carbonate can prevent the first flavor source sheet from burning on the heat source, reducing the effort required to clean the heat source.

[0013] The heat conducting portion may include aluminum.

[0014] In this case, the heat conductive portion can be attached to the first flavor source sheet and vapor-deposited, so that the heat source can be easily formed.

[0015] The first flavor source sheet may have a coating on the outer peripheral surface of the first flavor source sheet excluding the surface facing the heat source.

[0016] In this case, the coating on the outer peripheral surface of the first flavor source sheet, excluding the surface facing the heat source, can suppress the generation and leakage of vapor or aerosol from this outer peripheral surface, thereby allowing the vapor or aerosol generated on and near this outer peripheral surface to be efficiently delivered to the user through the first air flow path.

[0017] The smoking system may be such that the flavor generating article has a second flavor source sheet, the heat source has a second surface opposite to the first surface, two or more of the heat conductive portions are arranged spaced apart from each other between the second flavor source sheet and the second surface of the heat source, and the flavor generating article has a second air flow path provided between the second flavor source sheet and the second surface of the heat source.

[0018] In this case, since a second air flow path is provided between the second flavor source sheet and the second surface of the heat source, the amount of air passing in contact with the second flavor source sheet can be further increased, thereby enabling the vapor or aerosol generated by the flavor-generating article to be more efficiently delivered to the user, and further improving the amount of vapor or aerosol supplied.

[0019] The heat conduction portion arranged between the first flavor source sheet and the first surface of the heat source may be arranged so as not to face the heat conduction portion arranged between the second flavor source sheet and the second surface of the heat source across the heat source.

[0020] In this case, the heat conductive section disposed between the first flavor source sheet and the first surface of the heat source and the heat conductive section disposed between the second flavor source sheet and the second surface of the heat source can be positioned so as to be offset from each other. Therefore, heat conducted from the heat conductive section disposed between the first flavor source sheet and the first surface of the heat source is easily conducted to the first flavor source sheet, and heat conducted from the heat conductive section disposed between the second flavor source sheet and the second surface of the heat source is easily conducted to the first flavor source sheet. This allows heat generated by the heat source to be efficiently conducted to the first flavor source sheet and the second flavor source sheet.

[0021] The thickness of the first flavor source sheet may be 0.2 mm or more and 1.5 mm or less, and preferably 0.75 mm or more and 1 mm or less.

[0022] In this case, steam or aerosol can be appropriately generated while preventing the first flavor source sheet from burning. If the thickness of the first flavor source sheet is less than 0.2 mm, the first flavor source sheet is too thin, resulting in insufficient strength, poor formability, and the risk of tearing. In addition, in this case, it may be difficult to generate a sufficient flavor from the first flavor source sheet, and the aerosol source held by the first flavor source sheet may be depleted, causing the first flavor source sheet to burn. If the thickness of the first flavor source sheet is more than 1.5 mm, the first flavor source sheet is too thick, making it difficult for heat to be conducted through the first flavor source sheet, and the first flavor source sheet may not appropriately generate steam or aerosol.

[0023] The first flavor source sheet may contain 15 mg or more of the aerosol source.

[0024] In this case, the first flavor source sheet can continue to generate vapor or aerosol for a long period of time.

[0025] The aerosol source content of the first flavor source sheet may be 5% by weight or more, preferably 10% by weight or more, more preferably 15% by weight or more, and 50% by weight or less, preferably 25% by weight or less, relative to the total weight of the first flavor source sheet.

[0026] In this case, it is possible to generate a good flavor from the first flavor source sheet.

[0027] The thermal conductivity of the material of the heat conduction portion may be 0.1 w / (m·k) or more and 300 w / (m·k) or less.

[0028] In this case, heat can be conducted to the first flavor source sheet at an appropriate speed via the heat conductive portion. If the thermal conductivity of the heat conductive portion is less than 0.1 w / (m·k), heat conduction from the heat conductive portion to the first flavor source sheet will be slow, and the first flavor source sheet may not be heated efficiently. If the thermal conductivity of the heat conductive portion is more than 300 w / (m·k), heat conduction from the heat conductive portion to the first flavor source sheet will be too fast, and the aerosol source in the contact portion of the first flavor source sheet that comes into contact with the heat conductive portion will be depleted, and the first flavor source sheet may be burned.

[0029] The flavor inhaler has the heat source and a control unit that controls the heat source, the first flavor source sheet has a first portion and a second portion that is farther from the heat source than the first portion, the control unit stops heating of the heat source when a predetermined number of puffs is detected or a predetermined time has elapsed, and the aerosol content of the second portion may be greater than that of the first portion after the predetermined number of puffs or 50% of the predetermined number of puffs has elapsed.

[0030] In this case, since the aerosol source remains relatively in the second portion 50% of the time from the start of smoking to the end of smoking, vapor or aerosol can be generated from at least the second portion until the end of smoking.

[0031] The flavor inhaler may have an induction coil, and at least a portion of the heat source may include an inductively heatable susceptor.

[0032] In this case, the first flavor source sheet can be heated by inductively heating the heating source using an induction coil.

[0033] The flavor inhaler may have a control unit that controls the induction coil, and the first flavor source sheet may have a first portion and a second portion that is farther from the heating source than the first portion, and the control unit may stop the supply of power to the induction coil when a predetermined number of puffs is detected or a predetermined time has elapsed, and the second portion may have a higher aerosol source content than the first portion after the predetermined number of puffs or 50% of the predetermined time has elapsed.

[0034] In this case, since the aerosol source remains relatively in the second portion 50% of the time from the start of smoking to the end of smoking, vapor or aerosol can be generated from at least the second portion until the end of smoking.

[0035] The heat conducting portion may be part of the heat source.

[0036] In this case, the heat source can conduct heat to the first flavor source sheet via the heat conducting portion.

[0037] The thickness of the heat conductive portion may be 0.1 mm or more and 1 mm or less, preferably 0.2 mm or more and 0.75 mm or less, and more preferably 0.2 mm or more and 0.5 mm or less.

[0038] In this case, by setting the thickness of the heat conductive portion to 0.1 mm or more and 1 mm or less, the width of the first air flow path can be set to 0.1 mm or more and 1 mm or less, thereby ensuring the amount of air passing through the first air flow path while properly conducting heat through the heat conductive portion. If the thickness of the heat conductive portion is less than 0.1 mm, the width of the first air flow path may be too small, which may reduce the amount of air passing through in contact with the first flavor source sheet to be heated. Furthermore, if the thickness of the heat conductive portion is less than 0.1 mm, heat may be conducted too quickly from the heat conductive portion to the first flavor source sheet, which may result in depletion of the aerosol source in the contact area of ​​the first flavor source sheet and cause the first flavor source sheet to burn. On the other hand, if the thickness of the heat conductive portion exceeds 1 mm, the heat conduction rate of the heat conductive portion may be too slow, which may result in inefficient heating of the first flavor source sheet.

[0039] The ratio of the thickness of the first flavor source sheet to the thickness of the heat conductive portion may be 0.5 or more and 15 or less.

[0040] In this case, steam or aerosol can be appropriately generated while preventing the first flavor source sheet from burning. If the above ratio is less than 0.5, the thickness of the first flavor source sheet is too thin, and the aerosol source held by the first flavor source sheet may be depleted, causing the first flavor source sheet to burn. On the other hand, if the above ratio is more than 15, the thickness of the first flavor source sheet is too thick, making it difficult for heat to be conducted through the first flavor source sheet, and there is a risk that steam or aerosol may not be appropriately generated from the first flavor source sheet.

[0041] The ratio of the thermal conductivity of the heat conductive portion to the thermal conductivity of the first flavor source sheet may be 1.5 or more, preferably 5 or more, more preferably 10 or more, and may be 1500 or less, preferably 1000 or less, more preferably 500 or less, and even more preferably 200 or less.

[0042] In this case, heat from the heat conductive portion can be conducted to the first flavor source sheet at an appropriate speed. If the ratio is less than 1.5, heat conduction from the heat conductive portion to the first flavor source sheet will be slow, and there is a risk that the first flavor source sheet will not be heated efficiently. If the ratio is more than 1500, heat conduction from the heat conductive portion to the first flavor source sheet will be fast, and the contact area between the heat conductive portion and the first flavor source sheet will be locally heated, and there is a risk that the first flavor source sheet will be burned.

[0043] The contact area between the heat conductive portion and the first flavor source sheet may be 10% or more of the area of ​​the surface of the first flavor source sheet facing the heat source, preferably 20% or more, more preferably 30% or more, even more preferably 40% or more, and may be 80% or less, preferably 70% or less, more preferably 60% or less.

[0044] In this case, heat from the heat source can be conducted to the first flavor source sheet at an appropriate speed while ensuring the flow area of ​​the first air flow path. If the contact area is less than 10%, heat conduction from the heat source to the first flavor source sheet will be slow, and the first flavor source sheet may not be heated efficiently. On the other hand, if the contact area is more than 80%, heat conduction from the heat source to the first flavor source sheet will be too fast, and the contact area between the heat conduction portion and the first flavor source sheet will be heated, which may cause the first flavor source sheet to burn. Furthermore, if the contact area is more than 80%, the heat conduction portion may excessively narrow the flow area of ​​the first air flow path.

[0045] The first flavor source sheet and the second flavor source sheet may differ from each other in at least one of flavor, thickness, aerosol source content, and surface shape.

[0046] When the flavors are different, different flavors can be generated from the first flavor source sheet and the second flavor source sheet. Therefore, by adjusting the delivery amount of each flavor, the desired flavor can be provided to the user. Furthermore, when the thicknesses are different, a relatively thin flavor source sheet will have a faster temperature rise, allowing for efficient initial flavor or aerosol delivery. In contrast, a relatively thick flavor source sheet will have a more gradual temperature rise, allowing vapor or aerosol generation to continue until the latter half of smoking. When the aerosol source contents are different, a flavor source sheet with a relatively low aerosol source content will have a faster temperature rise, allowing for efficient initial vapor or aerosol delivery. In contrast, a flavor source sheet with a relatively high aerosol source content will have a more gradual temperature rise, allowing vapor or aerosol generation to continue until the latter half of smoking. Furthermore, when the surface shapes of the flavor source sheets are different, a tobacco sheet with a relatively large surface area will allow for efficient initial vapor or aerosol delivery. In contrast, a flavor source sheet having a relatively small surface area will cause a gradual increase in temperature, allowing vapor or aerosol generation to continue until the latter half of smoking.

[0047] The first flavor source sheet may have a first portion and a second portion that is farther from the heat source than the first portion, and the second portion may contain more flavor and aerosol source than the first portion.

[0048] In this case, the second portion of the flavor-generating article, which generates vapor or aerosol in the latter half of a smoking session from the start to the end of smoking, and which is distant from the heating source, contains a relatively large amount of flavor and aerosol source, thereby increasing the amount of vapor or aerosol generated in the latter half of a smoking session.

[0049] The first flavor source sheet may have a first portion and a second portion that is farther from the heat source than the first portion, and the second portion may contain less flavor and aerosol source than the first portion.

[0050] In this case, since the first portion close to the heat source contains a relatively large amount of flavor and aerosol source, the temperature rise in the first portion close to the heat source is gradual, and the generation of vapor or aerosol can be continued until the latter half of smoking, thereby stabilizing the generation of vapor or aerosol throughout one session, from the start to the end of smoking the flavor-generating article.

[0051] FIG. 5 is a schematic side view of a flavor inhaler that heats a flavor generating article according to the present embodiment. FIG. 6 is a schematic view of an example of a smoking system. FIG. 7 is a schematic view of another example of a smoking system. FIG. 8 is a perspective view of a flavor generating article. FIG. 9 is a side view of the flavor generating article 10 as seen from the second opening of the case shown in FIG. 4. FIG. 10 is a partial cross-sectional view of the flavor generating article as seen from the arrow 6-6 shown in FIG. 5. FIG. 11 is a partial cross-sectional view of another example of a flavor generating article as seen from the arrow 6-6 shown in FIG. 10. FIG. 12 is a side view of another example of a flavor generating article as seen from the second opening of the case shown in FIG. 4.

[0052] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings described below, identical or corresponding components are designated by the same reference numerals, and redundant description will be omitted. In this specification, the term "longitudinal direction" refers to the direction in which air passes through the flavor source of the flavor-generating product or the longitudinal direction of the flavor-generating product. In addition, in this specification, the term "short direction" or "width direction" refers to the direction perpendicular to the longitudinal direction.

[0053] 1 is a schematic side view of a flavor inhaler for heating a flavor-generating article according to the present embodiment. The flavor inhaler 100 according to the present embodiment is configured to generate vapor or aerosol by heating a first flavor source sheet included in the flavor-generating article. As shown in the figure, the flavor inhaler 100 has a first housing 110, a second housing 120, and a mouthpiece 130. The first housing 110 and the second housing 120 may be configured to be detachable from each other. The mouthpiece 130 may be detachably connected to one end of the second housing 120 or may be formed integrally with the second housing 120.

[0054] 2 is a schematic diagram of an example of a smoking system. The smoking system includes a flavor inhaler 100 and a flavor-generating article 10. As shown, the flavor inhaler 100 has a battery 140, a heating unit 150, and a control unit 170 disposed inside a first housing 110, and a cooling unit 160 disposed inside a second housing 120. As shown, the first housing 110 and the second housing 120 are rotatably connected to each other by a hinge. The first housing 110 and the second housing 120 may also be connected to each other by a snap fit, screw connection, or the like so as to be completely separable. By completely separating the first housing 110 and the second housing 120 from each other in this manner, the cooling unit 160, the mouthpiece 130, and the heating unit 150 can be easily cleaned.

[0055] The battery 140 is configured to supply power to the heating unit 150, the control unit 170, etc. For example, the battery 140 is a lithium-ion battery. The battery 140 may be rechargeable by an external power source. The cooling unit 160 is configured to cool the aerosol generated from the flavor-generating article 10. The cooling unit 160 may be, for example, a space in which passing steam or aerosol is naturally cooled. Alternatively, the cooling unit 160 may be arranged or filled with one or more materials selected from the group consisting of polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, cellulose acetate, and aluminum foil. By arranging or filling the cooling unit 160 with these materials, the aerosol can be cooled more efficiently.

[0056] In the illustrated example, the heating unit 150 has a heating blade 150a (corresponding to an example of a heat source) inserted into the flavor-generating article 10. That is, the heating unit 150 is an internal heater that heats the flavor-generating article 10 from the inside. The heating blade 150a has a substrate, such as a resin, and a heating track formed on the surface of the substrate, and may have a thickness of, for example, approximately 0.5 mm. In addition, in the illustrated example, the heating unit 150 has two heating blades 150a. In the flavor inhaler 100, one flavor-generating article 10 may be attached to one of the heating blades 150a, or two flavor-generating articles 10 may be attached to respective heating blades 150a. This makes it possible to adjust the amount of aerosol generated from the flavor-generating article 10. The flavor inhaler 100 may have one heating blade 150a or two or more heating blades 150a. The heating section 150 is configured to heat the flavor-generating article 10 to, for example, 200°C or higher and 300°C or lower.

[0057] The control unit 170 is configured with a CPU, a memory, etc., and controls the operation of the flavor inhaler 100, particularly the heating unit 150. For example, the control unit 170 starts heating the flavor-generating article 10 in response to a user's operation on an input device such as a push button or a slide switch (not shown), and stops heating the flavor-generating article 10 after a certain time has elapsed. The control unit 170 may stop heating the flavor-generating article 10 even before the certain time has elapsed since the start of heating the flavor-generating article 10, if the number of puffing actions by the user exceeds a certain value. For example, the puffing action is detected by a sensor (not shown).

[0058] Alternatively, the control unit 170 may start heating the flavor-generating article 10 in response to the start of a puffing action, and may stop heating the flavor-generating article 10 in response to the end of the puffing action. The control unit 170 may stop heating the flavor-generating article 10 when a certain time has elapsed since the start of the puffing action, even before the end of the puffing action. In the illustrated example, the control unit 170 is disposed between the battery 140 and the heating unit 150, and suppresses heat conduction from the heating unit 150 to the battery 140.

[0059] The flavor-generating article 10 generates vapor or aerosol of the aerosol source or flavor source by being heated by the heating section 150. The aerosol generated in the flavor-generating article 10 is cooled by passing through the cooling section 160 and reaches the user's mouth through the mouthpiece 130 when the user inhales. The vapor generated in the flavor-generating article 10 can be cooled by the cooling section 160 and atomized into aerosol. In this embodiment, the flavor-generating article 10 is plate-shaped or card-shaped. However, the flavor-generating article 10 may also be cylindrical. In this case, the flavor-generating article 10 may be heated from the inside or the outside.

[0060] FIG. 3 is a schematic diagram of another example of a smoking system. The smoking system shown in FIG. 3 differs from the smoking system shown in FIG. 2 in the configuration of the heating unit 150. Specifically, the heating unit 150 has an induction coil 150b for inductively heating a susceptor (equivalent to an example of a heat source). The susceptor may be provided in the flavor inhaler 100 or in the flavor generating article 10. For example, the flavor inhaler 100 may have a susceptor that is inserted into the flavor generating article 10 when the flavor generating article 10 is placed in the heating unit 150. Alternatively, the flavor generating article 10 may have a susceptor that is inductively heated by the induction coil 150b. The flavor inhaler 100 shown in FIG. 3 may have an electromagnetic shield (not shown) between the heating unit 150 and the control unit 170 to prevent electromagnetic waves generated by the induction coil 150b from reaching the control unit 170.

[0061] Next, the flavor generating article 10 will be described in detail. FIG. 4 is a perspective view of the flavor generating article 10. The flavor generating article 10 includes a raw material portion 30 that generates vapor or aerosol and a case 20 that houses the raw material portion 30. The flavor generating article 10 shown in FIG. 4 does not include a mouthpiece, a filter, or a cooling portion; it only includes the raw material portion 30. In this case, the configuration of the flavor generating article 10 is simple, facilitating continuous production of the flavor generating article 10 and relatively reducing the weight of waste after use of the flavor generating article 10. Furthermore, since the flavor generating article 10 does not need to be equipped with a cooling function or a filter function, the design flexibility of the cooling portion 160 and mouthpiece 130 (or filter) in the flavor inhaler 100 is improved. Specifically, for example, the cooling function can be easily improved by processing the cooling portion 160 of the flavor inhaler 100 to increase its surface area to promote heat dissipation. On the other hand, the flavor generating article 10 may also be equipped with a cooling portion, a filter, or a mouthpiece.

[0062] The case 20 has a thin, approximately rectangular parallelepiped shape and includes a first opening 21 and a second opening 22 opposite the first opening 21. In other words, the case 20 is cylindrical. The heating blade 150a of the heating unit 150 or the susceptor of the flavor inhaler 100 described above can be inserted into the second opening 22. The first opening 21 allows steam or aerosol traveling from the raw material unit 30 to the cooling unit 160 to pass through. The first opening 21 and the second opening 22 can have approximately the same opening shape. The case 20 can be formed, for example, from paper. In this case, the case 20 can be manufactured inexpensively and easily. More specifically, the case 20 can be formed from a pulp mold. The case 20 can be formed from an air-impermeable material. Here, an air-impermeable material refers to a material with an air permeability of 0 CU when measured in accordance with ISO 2965-1997. Specifically, the case 20 can be formed from air-impermeable paper. In this case, it is possible to prevent vapor or aerosol generated from the flavor source from leaking from unintended portions of the case 20 .

[0063] Storing the raw material portion 30 in the case 20 allows the user to remove the flavor-generating article 10 from the heating portion 150 without directly touching the hot raw material portion 30 after use. Storing the raw material portion 30 in the case 20 also allows the shape of the raw material portion 30 to be maintained. A metal foil such as aluminum may be provided on the inner surface of the case 20. This suppresses heat radiation from the heating portion 150 and the raw material portion 30 heated by the heating portion 150, allowing the raw material portion 30 to be heated efficiently. The flavor-generating article 10 may be composed of only the raw material portion 30, without having the case 20.

[0064] FIG. 5 is a side view of the flavor generating article 10 as seen from the second opening 22 of the case 20 shown in FIG. 4. FIG. 6 is a partial cross-sectional view of the flavor generating article 10 as seen from the arrow 6-6 in FIG. 5. As shown in FIG. 5, the flavor generating article 10 has at least a first flavor source sheet 31 as the raw material section 30. The smoking system of this embodiment also has a heat source 80 that heats the flavor generating article 10, two or more heat conductive sections 85, and a first air flow path A1. The two or more heat conductive sections 85 are disposed spaced apart from each other between the first flavor source sheet 31 and the first surface 81 of the heat source 80. The first air flow path A1 is provided between the first flavor source sheet 31 and the first surface 81 of the heat source 80.

[0065] According to the smoking system of this embodiment, the heat of the heat source 80 is transferred to the first flavor source sheet 31 via the heat conduction section 85, and the first air flow path A1 is provided between the first flavor source sheet 31 and the first surface 81 of the heat source 80, thereby increasing the amount of air passing in contact with the first flavor source sheet 31. This allows the vapor or aerosol generated in the flavor-generating article 10 to be efficiently delivered to the user, and the amount of vapor or aerosol supplied can be increased.

[0066] The heat source 80 shown in Fig. 5 may be the heating blade 150a shown in Fig. 2 or the susceptor provided in the flavor inhaler 100 in the example shown in Fig. 3. Alternatively, the flavor generating article 10 may have the heat source 80 shown in Fig. 5, which may include an inductively heatable susceptor. In this case, the first flavor source sheet 31 (and the second flavor source sheet 41, which will be described later) can be heated by inductively heating the susceptor of the flavor generating article 10 using the induction coil 150b provided in the flavor inhaler 100 as shown in Fig. 3.

[0067] 5, the first flavor source sheet 31 may have, on one surface, a contact portion 32 that contacts the heat conductive portion 85 and an aerosol-generating surface 33 that is adjacent to the contact portion 32 and does not contact the heat conductive portion 85. In this case, as shown in Fig. 5, a first air flow path A1 can be defined by the heat source 80 and the aerosol-generating surface 33 of the first flavor source sheet 31. In this case, the first flavor source sheet 31 can generate vapor or aerosol on the aerosol-generating surface 33 that is not in contact with the heat conductive portion 85, and therefore the vapor or aerosol generated on the aerosol-generating surface 33 can be efficiently delivered to the user through the first air flow path A1.

[0068] The thickness of the first flavor source sheet 31 may be 0.2 mm or more and 1.5 mm or less, and preferably 0.75 mm or more and 1 mm or less. In this case, steam or aerosol can be appropriately generated while preventing the first flavor source sheet 31 from burning. If the thickness of the first flavor source sheet 31 is less than 0.2 mm, the first flavor source sheet 31 is too thin, resulting in insufficient strength, poor formability, and the risk of tearing. In addition, in this case, it may be difficult to generate a sufficient smoking flavor from the first flavor source sheet 31, and the aerosol source contained in the first flavor source sheet 31 may be depleted, causing the first flavor source sheet 31 to burn. If the thickness of the first flavor source sheet 31 exceeds 1.5 mm, the first flavor source sheet 31 is too thick, making it difficult for heat to be conducted through the first flavor source sheet 31, which may prevent steam or aerosol from being appropriately generated from the first flavor source sheet 31.

[0069] The aerosol source content of the first flavor source sheet 31 may be 15 mg or more. In this case, vapor or aerosol generation from the first flavor source sheet 31 can be continued for a long period of time. Furthermore, the aerosol source content of the first flavor source sheet 31 may be 5 wt % or more, preferably 10 wt % or more, more preferably 15 wt % or more, and 50 wt % or less, preferably 25 wt % or less, based on the total weight of the first flavor source sheet 31. In this case, it is possible to generate a good flavor from the first flavor source sheet 31.

[0070] As shown in FIG. 5 , the flavor-generating article 10 may further include a second flavor source sheet 41. The heat source 80 may have a second surface 82 opposite to the first surface 81. Furthermore, in the smoking system of this embodiment, two or more heat-conducting sections 85 may be disposed spaced apart from each other between the second flavor source sheet 41 and the second surface 82 of the heat source 80. The flavor-generating article 10 may include a second air flow path A2 provided between the second flavor source sheet 41 and the second surface 82 of the heat source 80. In this case, since the second air flow path A2 is provided between the second flavor source sheet 41 and the second surface 82 of the heat source 80, the amount of air passing in contact with the second flavor source sheet 41 can be further increased. This allows the vapor or aerosol generated by the flavor-generating article 10 to be delivered to the user more efficiently, further improving the amount of vapor or aerosol supplied. The thickness or aerosol content of the second flavor source sheet 41 may be similar to that of the first flavor source sheet 31 .

[0071] 5, the second flavor source sheet 41 may have, on one surface, a contact portion 42 that contacts the heat conductive portion 85 and an aerosol-generating surface 43 that is adjacent to the contact portion 42 and does not contact the heat conductive portion 85. In this case, as shown in Fig. 5, the heat conductive portion 85 and the aerosol-generating surface 43 of the second flavor source sheet 41 can define a second air flow path A2. In this case, the second flavor source sheet 41 can generate vapor or aerosol on the aerosol-generating surface 43 that does not contact the heat source 80, and therefore the vapor or aerosol generated on the aerosol-generating surface 43 can be efficiently delivered to the user through the second air flow path A2.

[0072] 5 , the heat-conducting section 85 disposed between the first flavor source sheet 31 and the first surface 81 of the heat source 80 may be disposed so as not to face the heat-conducting section 85 disposed between the second flavor source sheet 41 and the second surface 82 of the heat source 80 across the heat source 80. In this case, the heat-conducting section 85 disposed between the first flavor source sheet 31 and the first surface 81 of the heat source 80 and the heat-conducting section 85 disposed between the second flavor source sheet 41 and the second surface 82 of the heat source 80 can be disposed so as to be offset from each other. Therefore, heat conducted from the heat-conducting section 85 disposed between the first flavor source sheet 31 and the first surface 81 of the heat source 80 is easily conducted to the first flavor source sheet 31, and heat conducted from the heat-conducting section 85 disposed between the second flavor source sheet 41 and the second surface 82 of the heat source 80 is easily conducted to the second flavor source sheet 41. This allows the heat generated by the heat source 80 to be efficiently conducted to the first flavor source sheet 31 and the second flavor source sheet 41 .

[0073] The thermal conductivity of the material of the heat source 80 that constitutes the heat conductive section 85 may be 0.1 w / (m·k) or more and 300 w / (m·k) or less. In this case, heat can be conducted at an appropriate speed to the first flavor source sheet 31 or the second flavor source sheet 41 via the heat conductive section 85. If the thermal conductivity of the heat conductive section 85 is less than 0.1 w / (m·k), heat conduction from the heat conductive section 85 to the first flavor source sheet 31 or the second flavor source sheet 41 will be slow, and there is a risk that the first flavor source sheet 31 or the second flavor source sheet 41 will not be heated efficiently. If the thermal conductivity of the heat conducting portion 85 exceeds 300 w / (m·k), heat will be conducted from the heat conducting portion 85 to the first flavor source sheet 31 or the second flavor source sheet 41 too quickly, causing the aerosol source in the contact portion 32 or the contact portion 42 to be depleted, which may result in the first flavor source sheet 31 or the second flavor source sheet 41 burning.

[0074] In the example shown in FIG. 5 , the first flavor source sheet 31 and the second flavor source sheet 41 are flat sheets. The heat source 80 has a flat shape corresponding to the first flavor source sheet 31 and the second flavor source sheet 41. However, the first flavor source sheet 31 or the second flavor source sheet 41 may be a curved sheet. In this case, the heat source 80 may have a curved shape corresponding to the first flavor source sheet 31 or the second flavor source sheet 41. Specifically, for example, the first flavor source sheet 31 and the second flavor source sheet 41 may have an S-shaped cross section when viewed from the side as shown in FIG. 5 . In this case, it is preferable that the heat source 80 also has a similarly curved cross section. The first flavor source sheet 31 and the second flavor source sheet 41 may be cylindrical. In this case, the heat source 80 may be configured to heat the cylindrical first flavor source sheet 31 and the second flavor source sheet 41 from the inside or the outside.

[0075] At least one of the first flavor source sheet 31 and the second flavor source sheet 41 may contain tobacco. Specific examples of tobacco include shredded dried tobacco leaves, ground leaf tobacco, and tobacco extract (an extract made from water, an organic solvent, or a mixture thereof). Ground leaf tobacco is particles obtained by grinding leaf tobacco. The ground leaf tobacco may have an average particle size of, for example, 30 to 120 μm. Grinding can be performed using a known grinder, and may be either dry or wet grinding. Therefore, ground leaf tobacco is also referred to as leaf tobacco particles. In this embodiment, the average particle size is determined by a laser diffraction / scattering method, specifically, using a laser diffraction particle size distribution analyzer (e.g., Horiba, Ltd. LA-950). Furthermore, the type of tobacco is not limited, and flue-cured, Burley, Orient, native, and other Nicotiana tabacum and Nicotiana rustica varieties can be used. The amount of tobacco contained in the first flavor source sheet 31 or the second flavor source sheet 41 is not particularly limited, but is preferably 1 to 80% by weight, more preferably 10 to 50% by weight.

[0076] When at least one of the first flavor source sheet 31 and the second flavor source sheet 41 contains tobacco, the tobacco may be supported on a sheet made of non-tobacco fibers, such as pulp fibers or nonwoven fabric. Alternatively, at least one of the first flavor source sheet 31 and the second flavor source sheet 41 may be formed from a tobacco sheet. Examples of the tobacco sheet that can be used include a tobacco leaf paper sheet, a tobacco leaf cast sheet, and a tobacco leaf rolled sheet. At least one of the first flavor source sheet 31 and the second flavor source sheet 41 may further include an aerosol source. The type of aerosol source is not particularly limited, and extracts and / or their components from various natural products can be selected depending on the application. The aerosol source is preferably a polyhydric alcohol, such as glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.

[0077] At least one of the first flavor source sheet 31 and the second flavor source sheet 41 may contain a flavoring agent, in which case the flavoring agent can be provided to the user in addition to the flavor or aerosol. The type of the fragrance is not particularly limited, and from the viewpoint of imparting a good fragrance sensation, examples thereof include acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, Peru balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, β-carotene, carrot juice, L-carvone, β-caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl alcohol, cinnamyl cinnamate, citronella oil, DL-citronellol, ... Lonnelol, clary sage extract, cocoa, coffee, konjac oil, coriander oil, cuminaldehyde, davanna oil, delta-decalactone, gamma-decalactone, decanoic acid, dill herb oil, 3,4-dimethyl-1,2-cyclopentanedione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanoate, ethyl oleate, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3,(5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2(5H)-furanone, 2-ethyl-3-methylpyrazine, eucalyptol, fenugreek absolute, gene absolute, gentian root infusion, geraniol, geranyl acetate, grape juice, guaiacol, guava extract, gamma-heptalactone, gamma-hexalactone, hexanoic acid, cis-3-hexen-1-ol, hexyl acetate, hexyl alcohol, phenylhexyl acetate, honey, 4-hydroxy-3-pentenoic acid, lauryl methylpropional Ingredients: methicone, 4-hydroxy-4-(3-hydroxy-1-butenyl)-3,5,5-trimethyl-2-cyclohexen-1-one, 4-(para-hydroxyphenyl)-2-butanone, sodium 4-hydroxyundecanoate, immortelle absolute, beta-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola nut tincture, labdanum oil, lemon terpeneless oil, licorice extract, linalool, linalyl acetate, robertia jasmine Orris root oil, maltol, maple syrup, menthol, menthone, L-menthyl acetate, para-methoxybenzaldehyde, methyl 2-pyrrolyl ketone, methyl anthranilate, methyl phenylacetate, methyl salicylate, 4'-methylacetophenone, methylcyclopentenolone, 3-methylvaleric acid, mimosa absolute, honey, myristic acid, nerol, nerolidol, gamma-nonalactone, nutmeg oil, delta-octalactone, octanal, octanoic acid, orange flower oil, orange oil, orris root oil, palmitic acid, omega-pentadeca Calactone, peppermint oil, petitgrain Paraguay oil, phenethyl alcohol, phenethyl phenylacetate, phenylacetic acid, piperonal, plum extract, propenylguaethol, propyl acetate, 3-propylidenephthalide, prune juice, pyruvic acid, raisin extract, rose oil, rum, sage oil, sandalwood oil, spearmint oil, styrax absolute, marigold oil, tea distillate, α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5,5,9-tetramethyl-13-oxacyclo(8.3.0.0(4.9))tridecane, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2-tridecanone, triethyl citrate, 4-(2,6,6-trimethyl-1-cyclohexenyl)2-buten-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4-(2,6,6-trimethyl-1,3-cyclohexadienyl)2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, veratrol At least one of aldehydes, violet leaf absolute, N-ethyl-p-menthane-3-carboxamide (WS-3), ethyl-2-(p-menthane-3-carboxamide) acetate (WS-5), sugars (sucrose, fructose, etc.), cocoa powder, carob powder, coriander powder, licorice powder, orange peel powder, rose pip powder, chamomile flower powder, lemon verbena powder, peppermint powder, leaf powder, spearmint powder, black tea powder, natural plant flavors (e.g., jasmine oil, lemon oil, vetiver oil, lovage oil), and esters may be selected.

[0078] The first flavor source sheet 31 and the second flavor source sheet 41 may differ from each other in at least one of the flavor, thickness, aerosol source content, and surface shape. When the flavors are different, different flavors can be generated from the first flavor source sheet 31 and the second flavor source sheet 41. Therefore, by adjusting the amount of each flavor delivered, the desired flavor can be provided to the user. Furthermore, when the thicknesses are different, a relatively thin flavor source sheet will experience a rapid temperature rise, allowing for efficient initial flavor or aerosol delivery. In contrast, a relatively thick flavor source sheet will experience a gradual temperature rise, allowing vapor or aerosol generation to continue until the latter half of smoking. When the aerosol source content is different, a flavor source sheet with a relatively low aerosol source content will experience a rapid temperature rise, allowing for efficient initial vapor or aerosol delivery. In contrast, a flavor source sheet with a relatively high aerosol source content will experience a gradual temperature rise, allowing vapor or aerosol generation to continue until the latter half of smoking. Furthermore, when the surface shapes of the flavor source sheets are different, the tobacco sheet with a relatively large surface area can efficiently deliver vapor or aerosol at the beginning, whereas the flavor source sheet with a relatively small surface area will experience a slower temperature rise, allowing vapor or aerosol generation to continue until the latter half of smoking.

[0079] The first flavor source sheet 31 may have a coating on its outer peripheral surface excluding the surface facing the heat source 80 (i.e., the contact portion 32 with the heat source 80 and the aerosol-generating surface 33). In this case, generation and leakage of vapor or aerosol from this outer peripheral surface can be suppressed. As a result, vapor or aerosol generated on this outer peripheral surface and its vicinity can be efficiently delivered to the user through the first air flow path A1. Similarly, the second flavor source sheet 41 may have a coating on its outer peripheral surface excluding the surface facing the heat source 80 (the contact portion 42 with the heat source 80 and the aerosol-generating surface 43). The coating may include, for example, calcium carbonate, shellac, or a glass-based coating. Furthermore, the coating may also include covering the outer peripheral surface of the first flavor source sheet 31 or the outer peripheral surface of the second flavor source sheet 41 with the case 20, as in this embodiment.

[0080] As shown in FIG. 5 , the first flavor source sheet 31 may have a first portion 31a and a second portion 31b that is farther from the heat source 80 than the first portion 31a. The second portion 31b may contain more flavor and aerosol source than the first portion 31a. In this case, the second portion 31b, which is farther from the heat source 80 and generates vapor or aerosol in the latter half of one smoking session from the start to the end of smoking with the flavor-generating article 10, contains a relatively larger amount of flavor and aerosol source. This allows for an increased amount of vapor or aerosol generated in the latter half of one smoking session. Alternatively, the second portion 31b may contain fewer flavor and aerosol source than the first portion 31a. In this case, the first portion 31a, which is closer to the heat source 80, contains a relatively larger amount of flavor and aerosol source, which can suppress the generation of char due to depletion of the aerosol source.

[0081] As described in relation to FIG. 2 , the flavor inhaler 100 may have a heating source 80 (heating unit 150) and a control unit 170 that controls the heating source 80. The control unit 170 may stop heating of the heating source 80 when a predetermined number of puffs is detected or a predetermined time has elapsed. Here, the second portion 31b of the first flavor source sheet 31 may have a higher aerosol content than the first portion 31a at the predetermined number of puffs or 50% of the predetermined number of puffs. In this case, since a relatively large amount of aerosol source remains in the second portion 31b at 50% of the time of one session from the start of smoking to the end of smoking, vapor or aerosol can be generated from at least the second portion 31b until the end of smoking.

[0082] 3, the flavor inhaler 100 may include an induction coil 150b and a control unit 170 that controls the induction coil 150b. The control unit 170 may stop the power supply to the induction coil 150b when a predetermined number of puffs is detected or when a predetermined time has elapsed. Here, the second portion 31b of the first flavor source sheet 31 may contain a greater amount of aerosol source than the first portion 31a at 50% of the predetermined number of puffs or the predetermined time. In this case, since a relatively large amount of aerosol source remains in the second portion 31b at 50% of the time of one session from the start of smoking to the end of smoking, vapor or aerosol can be generated from at least the second portion 31b until the end of smoking.

[0083] As shown in FIG. 6 , in this embodiment, the heat-conducting portion 85 extends in the longitudinal direction of the flavor-generating article 10. As shown in FIG. 6 , the plurality of heat-conducting portions 85 may be equally spaced apart in the width direction of the flavor-generating article 10. FIG. 7 is a partial cross-sectional view of another example of the flavor-generating article 10, taken along the arrows 6 - 6 in FIG. 5 . As shown in FIG. 7 , the smoking system of this embodiment may have a plurality of heat-conducting portions 85 spaced apart in the width direction and the longitudinal direction. That is, the plurality of heat-conducting portions 85 may be arranged in a dot pattern on the first surface 81 of the heat source 80. Furthermore, the plurality of heat-conducting portions 85 are preferably spaced apart in the width direction and / or the longitudinal direction. In this case, the first flavor source sheet 31 can be uniformly heated. The smoking system may have a plurality of heat-conducting portions 85 spaced apart in the width direction and the longitudinal direction on the second surface 82, similar to the plurality of heat-conducting portions 85 arranged on the first surface 81. The first contact surfaces 81a are not limited to the examples shown in FIGS. 6 and 7, and may be arranged in any pattern and may have any planar shape.

[0084] 5 to 8 , the heat-conducting portion 85 may be part of the heat source 80. Specifically, the heat-conducting portion 85 may be formed integrally with the heat source 80 using the same material as the heat source 80, or may be fixed to the heat source 80 to become part of the heat source 80. In this case, the heat source can conduct heat to the first flavor source sheet via the heat-conducting portion.

[0085] The heat conductive portion 85 may include at least one of the group consisting of carbonate, ceramic, carbon, and metal. In this case, the heat conductive portion 85 may have considerable strength, which can prevent the heat conductive portion 85 from collapsing and blocking the first air flow path A1. Furthermore, the heat conductive portion 85 may have considerable thermal conductivity, which can efficiently conduct heat generated in the heat source 80 to the first flavor source sheet 31 or the second flavor source sheet 41. If the heat conductive portion 85 is an inorganic material, the heat conductive portion 85 itself can be prevented from burning.

[0086] It is particularly preferable that the heat conductive portion 85 contains calcium carbonate. In this case, the heat conductive portion 85 can be supported on the first flavor source sheet 31, thereby simplifying the configuration of the heat source 80. Furthermore, calcium carbonate can prevent the first flavor source sheet 31 from burning on the heat source 80, thereby reducing the effort required to clean the heat source 80.

[0087] The thickness of the heat conductive portion 85 may be 0.1 mm or more and 1 mm or less, preferably 0.2 mm or more and 0.75 mm or less, and more preferably 0.2 mm or more and 0.5 mm or less. In this case, the width (thickness) of the first air flow path A1 can be set to 0.1 mm or more and 1 mm or less, thereby ensuring the amount of air passing through the first air flow path A1 while properly conducting heat through the heat conductive portion 85. If the thickness of the heat conductive portion 85 is less than 0.1 mm, the width (thickness) of the first air flow path A1 may be too small, potentially reducing the amount of air passing through to contact the heated first flavor source sheet 31. Furthermore, if the thickness of the heat conductive portion 85 is less than 0.1 mm, heat may be conducted too quickly from the heat conductive portion 85 to the first flavor source sheet 31, resulting in depletion of the aerosol source at the contact portion 32 of the first flavor source sheet 31 and causing the first flavor source sheet 31 to burn. On the other hand, if the thickness of the heat conductive portion 85 exceeds 1 mm, the heat conduction speed of the heat conductive portion 85 will be slow, and there is a risk that the first flavor source sheet 31 will not be heated efficiently.

[0088] The ratio of the thickness of the first flavor source sheet 31 (or the second flavor source sheet 41) to the thickness of the heat conductive portion 85 may be 0.5 or more and 15 or less. In this case, steam or aerosol can be appropriately generated while preventing the first flavor source sheet 31 from burning. If the ratio is less than 0.5, the thickness of the first flavor source sheet 31 is too thin, and the aerosol source held by the first flavor source sheet 31 may be depleted, causing the first flavor source sheet 31 to burn. On the other hand, if the ratio is more than 15, the thickness of the first flavor source sheet 31 is too thick, making it difficult for heat to be conducted through the first flavor source sheet 31, and there is a risk that steam or aerosol will not be appropriately generated from the first flavor source sheet 31.

[0089] Furthermore, the ratio of the thermal conductivity of the heat conductive portion 85 to the thermal conductivity of the first flavor source sheet 31 (or the second flavor source sheet 41) may be 1.5 or more, preferably 5 or more, more preferably 10 or more, and 1500 or less, preferably 1000 or less, more preferably 500 or less, and even more preferably 200 or less. In this case, heat from the heat conductive portion 85 can be conducted to the first flavor source sheet 31 at an appropriate speed. If the ratio is less than 1.5, heat conduction from the heat conductive portion 85 to the first flavor source sheet 31 will be slow, and the first flavor source sheet 31 may not be heated efficiently. If the ratio is more than 1500, heat conduction from the heat conductive portion 85 to the first flavor source sheet 31 will be fast, and the contact portion 32 between the heat conductive portion 85 and the first flavor source sheet 31 will be heated, and the first flavor source sheet 31 may be burnt.

[0090] The contact area between the heat conductive portion 85 and the first flavor source sheet 31 (or the second flavor source sheet 41) may be 10% or more, preferably 20% or more, more preferably 30% or more, even more preferably 40% or more, and 80% or less, preferably 70% or less, and more preferably 60% or less of the area of ​​the surface of the first flavor source sheet 31 facing the heat source 80. In this case, heat from the heat source 80 can be conducted to the first flavor source sheet 31 at an appropriate speed while ensuring the flow path area of ​​the first air flow path A1. If the contact area is less than 10%, heat conduction from the heat source 80 to the first flavor source sheet 31 will be slow, and the first flavor source sheet 31 may not be heated efficiently. On the other hand, if the contact area exceeds 80%, heat may be conducted too quickly from the heat source 80 to the first flavor source sheet 31, causing localized heating of the contact portion 32 between the heat conductive portion 84 and the first flavor source sheet 31, which may result in scorching of the first flavor source sheet 31. Furthermore, if the contact area exceeds 80%, the heat conductive portion 84 may excessively narrow the flow path area of ​​the first air flow path. Note that scorching of the flavor source sheet in this specification includes scorching of the flavor source sheet itself and scorching of the flavor source due to adhesion to the heat conductive portion 85.

[0091] Next, a smoking system according to another embodiment will be described. Fig. 8 is a side view of another example of a flavor-generating article 10 as seen from the second opening 22 of the case 20 shown in Fig. 4. The flavor-generating article 10 shown in Fig. 8 differs from the flavor-generating article 10 shown in Fig. 5 in the configuration of the first flavor source sheet 31. Specifically, the first flavor source sheet 31 of the flavor-generating article 10 shown in Fig. 8 has a heat-conducting portion 84. In other words, the heat-conducting portion 84 is supported on the first flavor source sheet 31. In this case, the heat source 80 can conduct heat to the first flavor source sheet 31 via the heat-conducting portion 84.

[0092] 8 , the heat source 80 is in the shape of a substantially flat plate, and two or more heat conductive portions 84 are in contact with the surface of the heat source 80. That is, by providing the heat conductive portions 84 on the first flavor source sheet 31, the first flavor source sheet 31 does not come into direct contact with the heat source 80, and the first flavor source sheet 31 is prevented from burning to the heat source 80, thereby eliminating or reducing maintenance of the heat source 80. The heat conductive portions 84 are preferably disposed on both sides of the heating element 83. This allows the first air flow path A1 and the second air flow path A2 to be formed.

[0093] The heat conducting portion 84 may have a shape that is elongated in the longitudinal direction, similar to the heat conducting portion 85 shown in Fig. 6 . In this case, the first air flow path A1 extends in the longitudinal direction. The heat conducting portion 84 may also be arranged in a dot pattern, similar to the heat conducting portion 85 shown in Fig. 7 . The examples shown in Figs. 6 and 7 are not limiting, and the multiple heat conducting portions 84 may be arranged in any pattern and may have any planar shape.

[0094] The shape, size, arrangement, physical properties, or material of the heat conductive portion 84 may be similar to those of the heat conductive portion 85 .

[0095] Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications are possible within the scope of the claims and the technical idea described in the specification and drawings. Note that any shape or material not directly described in the specification or drawings is within the scope of the technical idea of ​​the present invention as long as it achieves the functions and effects of the present invention.

[0096] Some aspects disclosed in this specification are described below. (1) A smoking system comprising: a flavor inhaler; a flavor-generating article including a first flavor source sheet; a heat source for heating the flavor-generating article; two or more heat-conducting sections spaced apart from each other between the first flavor source sheet and a first surface of the heat source; and a first air flow path provided between the first flavor source sheet and the first surface of the heat source. (2) The smoking system described in (1), wherein the first flavor source sheet has a contact section that contacts the heat-conducting section and an aerosol-generating surface adjacent to the contact section but not in contact with the heat-conducting section. (3) The smoking system described in (1) or (2), wherein the heat-conducting section includes at least one member selected from the group consisting of carbonate, ceramic, carbon, and metal. (4) The smoking system described in any one of (1) to (3), wherein the first flavor source sheet has a coating on its outer peripheral surface except for the surface facing the heat source. (5) The smoking system described in any one of (1) to (4), wherein the flavor generating article has a second flavor source sheet, the heat source has a second surface opposite to the first surface, two or more of the heat conducting sections are arranged spaced apart from each other between the second flavor source sheet and the second surface of the heat source, and the flavor generating article has a second air flow path provided between the second flavor source sheet and the second surface of the heat source. (6) The smoking system described in (5), wherein the heat conducting section arranged between the first flavor source sheet and the first surface of the heat source is arranged so as not to face the heat conducting section arranged between the second flavor source sheet and the second surface of the heat source across the heat source. (7) The smoking system according to any one of (1) to (6), wherein the thickness of the first flavor source sheet is 0.2 mm or more and 1.5 mm or less. (8) The smoking system according to any one of (1) to (7), wherein the aerosol source content of the first flavor source sheet is 15 mg or more.(9) The smoking system described in any one of (1) to (8), wherein the thermal conductivity of the material of the heat conductive portion is 0.1 W / (m·k) or more and 300 W / (m·k) or less. (10) The smoking system described in any one of (1) to (9), wherein the flavor inhaler has the heat source and a control unit that controls the heat source, the first flavor source sheet has a first portion and a second portion that is farther from the heat source than the first portion, the control unit stops heating of the heat source when a predetermined number of puffs is detected or a predetermined time has elapsed, and the second portion has a higher aerosol content than the first portion at the predetermined number of puffs or when 50% of the predetermined number has elapsed. (11) The smoking system described in any one of (1) to (9), wherein the flavor inhaler has an induction coil, and at least a portion of the heat source includes an induction-heatable susceptor. (12) The smoking system described in (11), wherein the flavor inhaler has a control unit that controls the induction coil, and the first flavor source sheet has a first portion and a second portion that is farther from the heat source than the first portion, and the control unit stops the supply of power to the induction coil when a predetermined number of puffs is detected or a predetermined time has elapsed, and the second portion has a higher aerosol source content than the first portion when the predetermined number of puffs or 50% of the predetermined time has elapsed. (13) The smoking system described in any of (1) to (12), wherein the heat conductive portion is part of the heat source. (14) The smoking system described in any of (1) to (13), wherein the thickness of the heat conductive portion is 0.1 mm or more and 1 mm or less. (15) The smoking system described in any of (1) to (14), wherein the ratio of the thickness of the first flavor source sheet to the thickness of the heat conductive portion is 0.5 or more and 15 or less. (16) A smoking system according to any one of (1) to (15), wherein the ratio of the thermal conductivity of the heat-conducting portion to the thermal conductivity of the first flavor source sheet is 1.5 or more and 1500 or less.

[0097] 10: Flavor-generating article 31: First flavor source sheet 31a: First portion 31b: Second portion 32: Contact portion 33: Aerosol-generating surface 41: Second flavor source sheet 80: Heat source 81: First surface 83: Heat generating element 84, 85: Heat conducting portion 100: Flavor inhaler 150b: Induction coil 170: Control portion A1: First air flow path A2: Second air flow path

Claims

1. A flavor inhaler, a flavor generating article including a first flavor source sheet; a heat source for heating the flavor-generating article; two or more heat conductive portions spaced apart from one another between the first flavor source sheet and the first surface of the heat source; a first air flow path provided between the first flavor source sheet and the first surface of the heat source.

2. 2. The smoking system according to claim 1, A smoking system, wherein the first flavor source sheet has a contact portion that contacts the heat conductive portion and an aerosol generating surface that is adjacent to the contact portion and does not contact the heat conductive portion.

3. 2. The smoking system according to claim 1, A smoking system, wherein the heat-conducting portion includes at least one of the group consisting of carbonate, ceramic, carbon, and metal.

4. 2. The smoking system according to claim 1, A smoking system, wherein the first flavor source sheet has a coating on the outer peripheral surface of the first flavor source sheet except for the surface facing the heat source.

5. 2. The smoking system according to claim 1, the flavor-generating article has a second flavor source sheet, the heat source has a second surface opposite the first surface; two or more of the heat conductive portions are arranged spaced apart from each other between the second flavor source sheet and the second surface of the heat source; A smoking system, wherein the flavor generating article has a second air flow path provided between the second flavor source sheet and the second surface of the heat source.

6. 6. The smoking system according to claim 5, A smoking system, wherein the heat conductive portion arranged between the first flavor source sheet and the first surface of the heat source is arranged so as not to face the heat conductive portion arranged between the second flavor source sheet and the second surface of the heat source across the heat source.

7. 2. The smoking system according to claim 1, A smoking system, wherein the thickness of the first flavor source sheet is 0.2 mm or more and 1.5 mm or less.

8. 2. The smoking system according to claim 1, A smoking system, wherein the first flavor source sheet contains an aerosol source of 15 mg or more.

9. 2. The smoking system according to claim 1, A smoking system, wherein the thermal conductivity of the material of the heat conductive part is 0.1 w / (m·k) or more and 300 w / (m·k) or less.

10. 2. The smoking system according to claim 1, The flavor inhaler includes the heat source and a control unit that controls the heat source, the first flavor source sheet has a first portion and a second portion that is farther from the heat source than the first portion; the control unit stops heating of the heat source when a predetermined number of puffs are detected or when a predetermined time has elapsed, A smoking system in which the second portion has a higher aerosol content than the first portion at the predetermined number of times or at 50% of the predetermined number of times.

11. 2. The smoking system according to claim 1, The flavor inhaler has an induction coil, A smoking system, wherein at least a portion of the heat source includes an inductively heatable susceptor.

12. 12. The smoking system according to claim 11, The flavor inhaler has a control unit that controls the induction coil, the first flavor source sheet has a first portion and a second portion that is farther from the heat source than the first portion; the control unit stops the supply of power to the induction coil when a predetermined number of puffs are detected or when a predetermined time has elapsed; A smoking system in which the second portion contains a greater amount of aerosol source than the first portion at the predetermined number of times or after 50% of the predetermined time has elapsed.

13. 2. The smoking system according to claim 1, A smoking system, wherein the heat conductive portion is part of the heat source.

14. 2. The smoking system according to claim 1, A smoking system, wherein the thickness of the heat conductive portion is 0.1 mm or more and 1 mm or less.

15. 2. The smoking system according to claim 1, A smoking system, wherein the ratio of the thickness of the first flavor source sheet to the thickness of the heat conductive portion is 0.5 or more and 15 or less.

16. 16. A smoking system according to any one of claims 1 to 15, A smoking system, wherein the ratio of the thermal conductivity of the heat conductive portion to the thermal conductivity of the first flavor source sheet is 1.5 or more and 1500 or less.