Heating component and aroma inhaler having the same

Abstract

Provided are a tube for an aspirator having a new structure and an aspirator. Provided is a heating assembly, which comprises a first tube component having a first opening at one end through which a fragrance generating article can be inserted and a second opening at the other end forming an air inlet, a heating component, and a heat insulating material. The heating assembly further comprises a second tube component arranged to surround the first tube component, a sealed area is provided between the first tube component and the second tube component, and the heating component and the heat insulating material are accommodated in the sealed area.

Description

Technical Field

[0001] The invention relates to a heating component and a fragrance inhaler equipped with the heating component. Background Art

[0002] In the past, there have been known flavor inhalers for inhaling flavors and the like without burning the material. As such flavor inhalers, there is known a smoking material heating device that forms an aerosol by heating a smoking material composed of tobacco containing volatile components (see Patent Document 1). The smoking material heating device described in Patent Document 1 has a hollow cylindrical heater.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application No. 2018-522551 Summary of the invention

[0006] Problems that the invention will solve

[0007] The object of the present invention is to provide a heating component and a fragrance inhaler having a new structure.

[0008] Means for solving problems

[0009] According to one aspect of the present invention, a heating assembly is provided, which comprises a first tube component having a first opening at one end capable of inserting a fragrance generating article and a second opening at the other end forming an air inlet, a heating component, and a heat insulating material. The heating assembly also comprises a second tube component arranged to surround the first tube component, a closed area is provided between the first tube component and the second tube component, and the heating component and the heat insulating material are accommodated in the closed area.

[0010] According to another aspect of the present invention, there is provided a flavor inhaler including the above-mentioned heating element. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1A It is an overall perspective view of the flavor inhaler of this embodiment.

[0012] Figure 1B This is an overall perspective view of the flavor inhaler of the present embodiment in a state where the smoking article is held.

[0013] Figure 2 It is a cross-sectional view of a smoking article.

[0014] Figure 3 yes Figure 1A It is a cross-sectional view taken along the direction 3-3 shown.

[0015] Figure 4 A cross-sectional view of the heating assembly is shown.

[0016] Figure 5 A side view of the heating assembly is shown.

[0017] Figure 6 It is an enlarged cross-sectional view of the connection portion between the heating component and the external fin.

[0018] Figure 7 is an enlarged schematic cross-sectional view of the heating assembly.

[0019] Figure 8 This is a diagram schematically showing the positional relationship in the axial direction between the base material portion of the smoking article and the heating member and the inner tube of the flavor inhaler of the present embodiment. DETAILED DESCRIPTION

[0020] In the drawings described below, the same or corresponding components are denoted by the same reference numerals and duplicate descriptions are omitted.

[0021] Figure 1A It is an overall perspective view of the flavor inhaler of this embodiment. Figure 1B The flavor inhaler 10 of the present embodiment is configured to heat a smoking article 110 (equivalent to an example of a flavor generating article) having a flavor source (equivalent to an example of a flavor generating substrate) including an aerosol source, thereby generating an aerosol containing a flavor.

[0022] like Figure 1A as well as Figure 1B As shown, the aroma inhaler 10 includes a top housing 11A, a bottom housing 11B, a cover 12, a switch 13, and a lid 14. The top housing 11A and the bottom housing 11B are connected to each other, thereby forming the outermost housing 11 of the aroma inhaler 10. The housing 11 is sized to fit in the hand of the user. When using the aroma inhaler 10, the user can hold the aroma inhaler 10 by hand and inhale the aroma.

[0023] The top housing 11A has an opening (not shown), and the cover 12 is coupled to the top housing 11A in a manner to close the opening. Figure 1BAs shown, the cover 12 has an opening 12a into which the smoking article 110 can be inserted. The cover 14 is configured to open and close the opening 12a of the cover 12. Specifically, the cover 14 is mounted on the cover 12 and is configured to be movable along the surface of the cover 12 between a first position that closes the opening 12a and a second position that opens the opening 12a. Thus, the cover 14 can allow or restrict the smoking article 110 to enter and exit the interior of the flavor inhaler 10 (the opening of the outer fin 17 or the opening of the top cap 48 described later).

[0024] The switch 13 is used to switch the operation of the aroma absorber 10 on and off. Figure 1B As shown, when the smoking article 110 is inserted into the opening 12a, the user operates the switch 13, thereby supplying power from the power source (not shown) to the heating component (not shown), so that the smoking article 110 can be heated without burning. When the smoking article 110 is heated, the aerosol evaporates from the aerosol source contained in the smoking article 110, and the fragrance of the fragrance source is absorbed by the aerosol. The user sucks the portion of the smoking article 110 protruding from the fragrance inhaler 10 ( Figure 1B In the present specification, the length direction of the flavor inhaler 10 refers to the direction in which the smoking article 110 is inserted into the opening 12a.

[0025] Next, the structure of the smoking article 110 used in the flavor inhaler 10 of the present embodiment will be described. Figure 2 is a cross-sectional view of smoking article 110. Figure 2 In the illustrated embodiment, the smoking article 110 comprises: a substrate portion 110A including a filler 111 (corresponding to an example of a flavor generating substrate) and a first paper roll 112 wrapping the filler 111; and a mouthpiece portion 110B forming an end portion on the opposite side of the substrate portion 110A. The substrate portion 110A and the mouthpiece portion 110B are connected by a second paper roll 113 different from the first paper roll 112. However, the second paper roll 113 may be omitted, and the substrate portion 110A and the mouthpiece portion 110B may be connected by using the first paper roll 112.

[0026] Figure 2The mouthpiece 110B in the smoking article 110 has a paper tube portion 114, a filter portion 115, and a hollow section portion 116 disposed between the paper tube portion 114 and the filter portion 115. The hollow section portion 116 is composed of, for example, a filling layer having one or more hollow channels and a molded paper covering the filling layer. Since the filling density of the filling layer is high, during suction, air and aerosol only flow in the hollow channels and hardly flow in the filling layer. In the smoking article 110, when it is desired to reduce the reduction caused by the filtration of aerosol components in the filter portion 115, shortening the length of the filter portion 115 and replacing it with the hollow section portion 116 is more effective in increasing the amount of aerosol transported.

[0027] Figure 2 The mouthpiece 110B in the embodiment is composed of three sections, but in the present embodiment, the mouthpiece 110B may be composed of one or two sections, or may be composed of four or more sections. For example, the hollow section 116 may be omitted, and the paper tube 114 and the filter 115 may be arranged adjacent to each other to form the mouthpiece 110B.

[0028] exist Figure 2 In the embodiment shown, the length of the smoking article 110 in the longitudinal direction is preferably 40 mm to 90 mm, more preferably 50 mm to 75 mm, and further preferably 50 mm to 60 mm. The circumference of the smoking article 110 is preferably 15 mm to 25 mm, more preferably 17 mm to 24 mm, and further preferably 20 mm to 23 mm. In addition, the length of the substrate portion 110A in the smoking article 110 may be 20 mm, the length of the first paper roll 112 may be 20 mm, the length of the hollow section portion 116 may be 8 mm, and the length of the filter portion 115 may be 7 mm, but the length of each section may be appropriately changed according to manufacturing adaptability, required quality, etc.

[0029] In the present embodiment, the filler 111 of the smoking article 110 may contain an aerosol source that generates an aerosol by heating at a predetermined temperature. The type of aerosol source is not particularly limited, and extracts from various natural products and / or their constituent components can be selected according to the application. As an aerosol source, for example, glycerol, propylene glycol, triacetin, 1,3-butylene glycol and a mixture thereof can be listed. The content of the aerosol source in the filler 111 is not particularly limited. From the perspective of fully generating an aerosol and imparting a good aroma and taste, it is usually 5% by weight or more, preferably 10% by weight or more, and is usually 50% by weight or less, preferably 20% by weight or less.

[0030] The filler 111 of the smoking article 110 in the present embodiment may contain shredded tobacco as a flavor source. The material of the shredded tobacco is not particularly limited, and known materials such as sheets and stems can be used. The range of the content of the filler 111 in the smoking article 110 is preferably 200 mg to 400 mg, or 250 mg to 320 mg, when the circumference is 22 mm and the length is 20 mm. The moisture content of the filler 111 is preferably 8% by weight to 18% by weight, or 10% by weight to 16% by weight. If it is such a moisture content, the generation of rolling paper dirt is suppressed, and the rolling adaptability of the substrate portion 110A during manufacturing is good. There are no particular restrictions on the size of the shredded tobacco used as the filler 111 and its modulation method. For example, dried tobacco leaves can also be cut into pieces with a width of 0.8 mm to 1.2 mm. Alternatively, the dried tobacco leaves may be crushed and homogenized into an average particle diameter of about 20 μm to 200 μm, and then processed into film, and then cut into pieces with a width of 0.8 mm to 1.2 mm for use. Moreover, the tobacco leaves processed into film may be pleated instead of cut into pieces and used as filler 111. In addition, filler 111 may also contain one or more flavoring agents. The type of the flavoring agent is not particularly limited, but menthol is preferred from the viewpoint of providing a good smoking taste.

[0031] In the present embodiment, the first paper 112 and the second paper 113 of the smoking article 110 can be made of base paper having a grammage of, for example, 20 gsm to 65 gsm, preferably 25 gsm to 45 gsm. The thickness of the first paper 112 and the second paper 113 is not particularly limited, but from the perspective of rigidity, air permeability, and ease of adjustment during papermaking, it is 10 μm to 100 μm, preferably 20 μm to 75 μm, and more preferably 30 μm to 50 μm.

[0032] In the present embodiment, the first roll paper 112 and the second roll paper 113 of the smoking article 110 may contain fillers. The content of the filler can be listed as 10% by weight or more and less than 60% by weight relative to the total weight of the first roll paper 112 and the second roll paper 113, preferably 15% by weight or more and 45% by weight or less. In the present embodiment, relative to the preferred gram weight range (25gsm or more and 45gsm or less), the filler is preferably 15% by weight or more and 45% by weight or less. As fillers, for example, calcium carbonate, titanium dioxide, kaolin, etc. can be used. Paper containing such fillers can present a bright color of a preferred white system from the perspective of the appearance of the roll paper used as the smoking article 110, and can permanently maintain white. By containing a large amount of such fillers, for example, the ISO whiteness of the roll paper can be made 83% or more. In addition, from the practical perspective of the roll paper used as the smoking article 110, the first roll paper 112 and the second roll paper 113 preferably have a tensile strength of 8N / 15mm or more. The tensile strength can be improved by reducing the content of the filler. Specifically, by reducing the content of the filler below the upper limit of the content of the filler shown in the range of each basis weight exemplified above, the tensile strength can be increased.

[0033] Next, Figure 1A as well as Figure 1B The internal structure of the aroma inhaler 10 shown will be described. Figure 3 yes Figure 1A The cross-sectional view shown in 3-3. Figure 3 As shown, the aroma inhaler 10 has a power supply unit 20, a circuit unit 30, and a heating unit 40 in the internal space of the housing 11. The circuit unit 30 has a first circuit substrate 31 and a second circuit substrate 32 electrically connected to the first circuit substrate 31. The first circuit substrate 31 is configured to extend in the longitudinal direction as shown in the figure. Thus, the power supply unit 20 and the heating unit 40 are divided by the first circuit substrate 31. As a result, the heat generated in the heating unit 40 can be suppressed from being transferred to the power supply unit 20.

[0034] The second circuit substrate 32 is disposed between the power supply unit 20 and the switch 13, and extends in a direction perpendicular to the extending direction of the first circuit substrate 31. The switch 13 and the second circuit substrate 32 are disposed adjacent to each other. When the user presses the switch 13, a portion of the switch 13 may contact the second circuit substrate 32.

[0035] The first circuit board 31 and the second circuit board 32 include, for example, a microprocessor and can control the power supply from the power supply unit 20 to the heating unit 40. Thus, the first circuit board 31 and the second circuit board 32 can control the heating of the smoking article 110 by the heating unit 40.

[0036] The power supply unit 20 has a power supply 21 electrically connected to the first circuit substrate 31 and the second circuit substrate 32. The power supply 21 can be, for example, a rechargeable battery or a non-rechargeable battery. The power supply 21 is electrically connected to the heating unit 40 via at least one of the first circuit substrate 31 and the second circuit substrate 32. Thus, the power supply 21 can supply power to the heating unit 40 to properly heat the smoking article 110. In addition, as shown in the figure, the power supply 21 is adjacently arranged relative to the heating component 41 in a direction orthogonal to the length direction of the heating unit 40. Thus, even if the size of the power supply 21 is increased, the length of the longitudinal direction of the flavor inhaler 10 can be suppressed from becoming longer.

[0037] In addition, the aroma inhaler 10 has a terminal 22 that can be connected to an external power source. The terminal 22 can be connected to a cable such as a micro USB, for example. In the case where the power source 21 is a rechargeable battery, by connecting an external power source to the terminal 22, a current can flow from the external power source to the power source 21 to charge the power source 21. In addition, by connecting a data communication cable such as a micro USB to the terminal 22, data related to the operation of the aroma inhaler 10 can be sent to an external device.

[0038] As shown in the figure, the heating unit 40 has a heating assembly 41 extending in the longitudinal direction. The heating assembly 41 is composed of a plurality of cylindrical components and is a cylindrical body as a whole. The heating assembly 41 is configured to be able to accommodate a part of the smoking article 110 therein, and has the function of dividing the flow path of the air supplied to the smoking article 110 and the function of heating the smoking article 110 from the periphery.

[0039] The bottom housing 11B is provided with a vent 15 (corresponding to an example of an air inlet) for allowing air to flow into the interior of the heating assembly 41. Specifically, the vent 15 is connected to one end portion ( Figure 3 The left end of the heating assembly 41 is connected to the aroma inhaler 10 by fluid. In addition, the aroma inhaler 10 has a detachable cap 16 at the vent 15. The cap 16 is configured to allow air to flow from the vent 15 into the interior of the heating assembly 41 even when it is installed at the vent 15. For example, it can have a through hole or a notch, etc., which are not shown. By installing the cap 16 at the vent 15, it is possible to prevent substances generated from the smoking article 110 inserted in the heating assembly 41 from falling from the vent 15 to the outside of the housing 11.

[0040] The other end of the heating element 41 ( Figure 3 The right end of Figure 1B The opening 12a (equivalent to an example of an air outlet) shown in the figure is fluidly connected. A substantially cylindrical outer fin 17 is provided between the cover 12 having the opening 12a and the other end of the heating assembly 41. The outer fin 17 engages with the downstream end of the top cap 48 described later. Figure 1B The opening 12a of the cover 12 is inserted into the interior of the flavor inhaler 10, and at least the filling 111 (refer to Figure 2 ) is arranged inside the heating assembly 41. That is, the outer fin 17 forms a part of the opening for accommodating the smoking article 110. The outer fin 17 is preferably formed as a cover 12 side ( Figure 3 The opening on the right side of the heating element 41 is larger than that on the side of the heating element 41 ( Figure 3 Thus, it is easy to insert the smoking article 110 from the opening 12a into the interior of the outer fin 17. In addition, when the smoking article 110 is not inserted into the interior of the heating component 41, the user can clean the interior of the heating component 41 by inserting a brush or other tool from the opening 12a. The cleaning tool can also be inserted from one end ( Figure 3 In this case, the cap 16 is removed from the vent 15 of the aroma inhaler 10.

[0041] like Figure 1B As shown, when the smoking article 110 is inserted into the flavor inhaler 10 from the opening 12a, if the user inhales the portion of the smoking article 110 protruding from the flavor inhaler 10, that is, Figure 2 The filter portion 115 shown in the figure, air flows from the vent 15 into the interior of the heating assembly 41. The inflowing air passes through the interior of the heating assembly 41 and reaches the user's mouth together with the aerosol generated from the smoking article 110. Therefore, the side of the heating assembly 41 close to the vent 15 is the upstream side, and the side of the heating assembly 41 close to the opening 12a (the side close to the outer fin 17) is the downstream side.

[0042] Next, we will explain in detail Figure 3 The composition of the heating assembly 41 is shown. Figure 4 A cross-sectional view of the heating assembly 41 is shown. Figure 5 A side view of the heating assembly 41 is shown. The heating assembly 41 has an inner tube 42 (equivalent to an example of the first tube member), a heating member 43, an aerosol 44 (equivalent to an example of a heat insulating material), and an outer tube 45 (equivalent to an example of a second tube member). The inner tube 42 has a first opening 42a at one end into which the smoking article 110 can be inserted, and has a second opening 42b forming an air inlet at the other end. In the present embodiment, the inner tube 42 is cylindrical and is configured to contact at least a portion of the smoking article 110 inserted from the first opening 42a. The second opening 42b is located on the upstream side of the air flow, and the first opening 42a is located on the downstream side.

[0043] The outer tube 45 is arranged to surround the inner tube 42, and a predetermined gap is formed between the inner tube 42 and the outer tube 45. The heating member 43 may be, for example, a flexible film heater formed by sandwiching a heating resistor between two films such as PI (polyimide). The heating member 43 is arranged to abut against the inner tube 42. Specifically, in the example shown in the figure, the heating member 43 is arranged on the outer peripheral side of the inner tube 42, and the inner surface of the heating member 43 is in contact with the outer surface of the inner tube 42. The heating member 43 is arranged along the outer peripheral surface of the inner tube 42, so that the whole is deformed into a roughly cylindrical shape.

[0044] The heating assembly 41 also includes a first annular member 46 extending in the circumferential direction between the downstream end of the inner tube 42 (the end on the first opening 42a side) and the downstream end of the outer tube 45 (the end close to the first opening 42a of the inner tube 42). In addition, the heating assembly 41 includes a second annular member 47 extending in the circumferential direction between the upstream end of the inner tube 42 (the end on the second opening 42b side) and the upstream end of the outer tube 45 (the end close to the second opening 42b of the inner tube 42). The first annular member 46 is tightly connected to the downstream end of the inner tube 42 via a top cap 48 and a heat shrink tube 52 described later. In addition, the second annular member 47 is tightly connected to the upstream end of the inner tube 42 via a bottom cap 50 and a heat shrink tube 52 described later. In addition, the first annular member 46 and the second annular member are tightly connected to the outer tube 45. Thus, a closed area 54 is provided between the inner tube 42 and the outer tube 45. The sealed area 54 accommodates the heating component 43 and the aerosol 44 .

[0045] A heat shrink tube 52 is arranged between the heating component 43 and the aerosol 44. The heat shrink tube 52 is cylindrical, and the heating component 43 is maintained in contact with the inner tube 42. Specifically, the heat shrink tube 52 is heat-shrunk by applying heat in a state where it is arranged on the outer peripheral side of the heating component 43, thereby applying stress to the heating component 43 in a manner that presses the heating component 43 against the inner tube 42. The heat shrink tube 52 can be formed of a thermoplastic resin such as perfluoroalkoxy fluororesin (PFA) in the present embodiment. In addition, in the present embodiment, the heat shrink tube 52 is used for the purpose of maintaining the state where the heating component 43 is in contact with the inner tube 42, but it is not limited to this, and any component that can achieve the same purpose can be used. For example, an elastic tube or the like can be used instead of the heat shrink tube 52.

[0046] The inner tube 42 is preferably formed of a metal material such as SUS having high thermal conductivity. As a result, the heat of the heating component 43 is easily conducted in the inner tube 42 as a whole, and as a result, the inner tube 42 itself can function as a heating mechanism. The outer tube 45 can be formed of the same metal material as the inner tube 42, for example. In addition, since the aerosol 44 is arranged between the heating component 43 and the outer tube 45, it is difficult for the heat generated from the heating component 43 to be transferred to the outer tube 45. In the present embodiment, the aerosol 44 is used to insulate the heat generated from the heating component 43, and it can be formed of various aerosol materials such as silica aerosol, carbon aerosol, and alumina aerosol. However, other insulation materials can be used instead of aerosols, for example, fiber insulation materials such as glass wool and rock wool, polyurethane foam, and foam insulation materials such as phenolic foam can also be used. Alternatively, the enclosed area 54 can be vacuumed to form a vacuum insulation space. When the aerosol 44 is used as a heat insulating material, the ratio of the volume of the aerosol 44 to the volume of the sealed area 54 is preferably 85% or more and 100% or less. This can prevent bubbles from entering the sealed space 54, thereby preventing the heat of the heating component 43, the inner tube 42, etc. from being transferred to the outer tube 45 via the bubbles. If bubbles are mixed into the sealed space 54, the bubbles can move freely according to the posture of the heating component 41 and transfer heat.

[0047] The heating assembly 41 further includes a top cap 48 and a bottom cap 50. The top cap 48 and the bottom cap 50 may be formed of, for example, a resin material. The top cap 48 is a cylindrical member having an inner space communicating with the first opening 42a of the inner tube 42, and is configured to allow the smoking article 110 to be inserted. Figure 4 as well as Figure 5 As shown, the top cap 48 is connected to the downstream end (the end on the first opening 42a side) of the inner tube 42. One or more convex portions 48a are provided on the inner circumferential surface of the top cap 48 and are evenly spaced in the circumferential direction. In the present embodiment, four convex portions 48a are provided on the inner circumferential surface of the top cap 48. Thus, the smoking article 110 inserted in the top cap 48 is fixed by imparting frictional resistance to the smoking article 110, thereby preventing the smoking article 110 from accidentally falling off from the flavor inhaler 10.

[0048] The bottom cap 50 is an elongated cylindrical member having a downstream end 50a connected to the upstream end (end on the second opening 42b side) of the inner tube 42 and an upstream end 50b on the opposite side of the downstream end 50a. The bottom cap 50 forms an internal flow path for introducing air toward the second opening 42b of the inner tube 42. The upstream end 50b (the lower end in the figure) of the bottom cap 50 is connected to the inner tube 42. Figure 3The vent 15 shown is arranged close to or adjacent to the vent 15. The air from the vent 15 can flow from the upstream end 50b of the bottom cap 50 to the downstream end 50a, and reach the user's mouth through the inner tube 42 and the top cap 48. That is, the bottom cap 50, the inner tube 42 and the top cap 48 form an air flow path 70 that connects the vent 15 with the opening 12a of the cover 12.

[0049] Next, the connection portion between the heating module 41 and the outer fins 17 will be described in detail. Figure 6 FIG. 4 is an enlarged cross-sectional view of the connection portion between the heating assembly 41 and the outer fin 17. Figure 6 As shown, a hollow rubber material 24 is provided at the connection portion between the outer fin 17 and the top cap 48. Specifically, the upstream end (the end on the first opening 42a side) of the outer fin 17 surrounds the outer periphery of at least a portion of the top cap 48, specifically, the outer periphery of the downstream end of the top cap 48. That is, the upstream end of the outer fin 17 has an inner diameter larger than the outer diameter of the downstream end of the inner tube 42, which can accommodate the downstream end of the top cap 48. The outer fin 17 has a receiving portion 17a for accommodating the rubber material 24. Specifically, the receiving portion 17a of the outer fin 17 forms a predetermined gap with the outer surface of the top cap 48. The rubber material 24 is annular and extends in the circumferential direction between the outer peripheral surface of the top cap 48 and the inner peripheral surface of the outer fin 17. Thus, the gap between the top cap 48 and the outer fin 17 is sealed. The rubber material 24 is not limited to a hollow structure, but may also be a solid structure.

[0050] Next, the relative positional relationship among the inner tube 42 , the heating member 43 , the aerosol 44 , the outer tube 45 , the top cap 48 , the bottom cap 50 , and the heat shrinkable tube 52 will be described. Figure 7 is an enlarged schematic cross-sectional view of the heating assembly 41. Figure 7 , the relative positional relationship of the components of the heating assembly 41 is described, and the specific shape and size thereof may be different from the actual one. Figure 7 In FIG. 5 , the upstream side (lower side in the figure) of the bottom cap 50 is omitted from illustration.

[0051] As shown in the figure, the upstream end (the end on the side close to the first opening 42a) of the top cap 48 surrounds the outer periphery of the downstream end (the end on the side of the first opening 42a) of the inner tube 42. That is, the upstream end of the top cap 48 has an inner diameter larger than the outer diameter of the downstream end of the inner tube 42, which can accommodate the downstream end of the inner tube 42. The connection portion between the inner surface of the top cap 48 and the outer surface of the inner tube 42 is sealed by, for example, an adhesive, so that gas or aerosol does not pass through the gap between the top cap 48 and the inner tube 42. In addition, the downstream end (the end on the side of the first opening 42a) of the heat shrink tube 52 surrounds the outer periphery of the upstream end of the top cap 48. The heat shrink tube 52 is in close contact with the upstream end of the top cap 48. In this way, the heating assembly 41 has an axially overlapping region between the top cap 48 and the inner tube 42 and between the top cap 48 and the heat shrink tube 52. In addition, the overlapping regions are in close contact or sealed with each other. This can improve the sealing performance among the top cap 48 , the inner tube 42 , and the heat shrink tube 52 .

[0052] In addition, the downstream end 50a (the end on the side close to the second opening 42b) of the bottom cap 50 surrounds the outer periphery of the upstream end (the end on the second opening 42b side) of the inner tube 42. That is, the downstream end 50a of the bottom cap 50 has an inner diameter larger than the outer diameter of the upstream end of the inner tube 42, which can accommodate the upstream end of the inner tube 42. The connection portion between the inner surface of the bottom cap 50 and the outer surface of the inner tube 42 is bonded, for example, by an adhesive, so that gas or aerosol does not pass through the gap between the bottom cap 50 and the inner tube 42. In addition, the upstream end (the end on the second opening 42b side) of the heat shrink tube 52 surrounds the outer periphery of the downstream end 50a of the bottom cap 50. The heat shrink tube 52 is in close contact with the downstream end 50a of the bottom cap 50. In this way, the heating assembly 41 has an axially overlapping region between the bottom cap 50 and the inner tube 42 and between the bottom cap 50 and the heat shrink tube 52. In addition, the overlapping regions are in close contact or sealed with each other. This can improve the sealing performance among the bottom cap 50 , the inner tube 42 , and the heat shrink tube 52 .

[0053] As shown in the figure, the top cap 48, the inner tube 42 and the bottom cap 50 are arranged in an axial direction, and the adjacent parts are connected to each other in an airtight manner, thereby forming a tubular assembly with a closed structure. The joint between the top cap 48 and the inner tube cap and the joint between the inner tube 42 and the bottom cap 50 in the tubular assembly can have a closed structure that can withstand a negative pressure of 40 kPa to 60 kPa based on atmospheric pressure. In particular, each joint preferably has a closed structure that can withstand a negative pressure of 45 kPa to 55 kPa, and typically preferably has a closed structure that can withstand a negative pressure of 50 kPa.

[0054] For example, it is possible to test whether each joint has the desired airtight structure by the method shown below. First, with the opening of one of the top cap 48 and the bottom cap 50 blocked, a vacuum pump or the like is used to suction from the opening of the other side to form a negative pressure inside the tubular assembly. When the negative pressure inside the tubular assembly reaches the desired value (e.g., 50 kPa), the suction is stopped, and the pressure change inside the tubular assembly when it is left in this state for a certain period of time is measured. If the pressure change at this time is smaller than the specified threshold value, it is judged that each joint has the desired airtight performance. The standing time after the above-mentioned suction is stopped is, for example, 3 seconds, and the threshold value of the pressure change is 2.3 kPa.

[0055] The bottom cap 50 has a small diameter portion 50c having an inner diameter smaller than that of the inner tube 42. A stepped locking portion 50d is formed by the portion of the bottom cap 50 surrounding the outer periphery of the upstream end of the inner tube 42 and the small diameter portion 50c. In other words, the locking portion 50d is a surface substantially orthogonal to the axial direction of the inner tube 42. As shown in the figure, the upstream end of the inner tube 42 is configured to abut against the locking portion 50d. In addition, the diameter of the small diameter portion 50c is designed so that when the smoking article 110 is inserted from the first opening 42a, the front end of the smoking article 110 abuts against the locking portion 50d. Thus, the smoking article 110 can be positioned.

[0056] As shown in the figure, the downstream end (the end on the first opening 42a side) and the upstream end (the end on the second opening 42b side) of the inner tube 42 are configured to protrude to the outside of the outer tube 45. In addition, as shown in the figure, the heating member 43 is configured to be accommodated between the upstream end and the downstream end of the outer tube 45 in the axial direction. In other words, the heating member 43 is configured not to contact the upstream end of the inner tube 42 protruding to the outside of the outer tube 45. As a result, the temperature of the upstream end of the inner tube 42 becomes lower than the temperature in the axial center of the inner tube 42. As a result, in a state where the smoking article 110 is inserted from the first opening 42a and the smoking article 110 abuts against the locking portion 50d, the heating of the front end of the smoking article 110 can be suppressed, so that the generation of undesirable aerosol from the front end of the smoking article can be prevented. In addition, since the front end of the smoking article 110 is relatively low in temperature, the condensation and capture of the aerosol here can be promoted, so that the aerosol generated on the downstream side can be prevented from flowing back in the air flow path 70.

[0057] The axial length of the heat shrink tube 52 is substantially the same as the axial length of the inner tube 42. In addition, the heat shrink tube 52 is longer than the heating member 43 in the axial direction, and the heating member 43 is located between the upstream end and the downstream end of the heat shrink tube 52. Thus, the heat shrink tube 52 can cover the entire heating member 43, and the heating member 43 can be in uniform contact with the inner tube 42. The aerosol 44 extends at least between the upstream end and the downstream end of the heating member 43 in the axial direction. Thus, the heat generated from the heating member 43 can be efficiently blocked.

[0058] The upstream end (the end close to the first opening 42a) of the top cap 48 is located on the upstream side (lower side in the figure) than the downstream end (the end close to the first opening 42a) of the outer tube 45. The downstream end 50a of the bottom cap 50 is located outside the outer tube 45. In addition, the upstream end (the end close to the second opening 42b) of the heat shrink tube 52 protrudes to the outside of the outer tube 45, and surrounds the outer periphery of the bottom cap 50 as described above.

[0059] The first annular member 46 and the second annular member 47 are substantially in contact with the inner tube 42 and the outer tube 45, so if they are formed of a material with high thermal conductivity, a large amount of heat in the inner tube 42 can be transferred to the outer tube 45 via the first annular member 46 and the second annular member 47. Therefore, in the present embodiment, the first annular member 46 and the second annular member 47 can be formed of a material with lower thermal conductivity than the inner tube 42 and the outer tube 45. Specifically, for example, they can be formed of a resin such as a UV curing resin or an ultraviolet curing resin. Thus, the heat transfer from the inner tube 42 to the outer tube 45 can be suppressed.

[0060] The heating assembly 41 has a heating component 43 and a Figure 3 The circuit unit 30 (equivalent to an example of a control unit) shown in FIG. 1 is electrically connected to the heater tail 56. Figure 7 As shown, at least a portion of the heater tail 56 extends along the outer surface of the inner tube 42 and the outer surface of the bottom cap 50 , protruding out of the enclosed area 54 .

[0061] The inner diameter of the bottom cap 50 may be constant from the downstream end 50a to the upstream end 50b. Alternatively, the inner surface of the bottom cap 50 may be formed in a tapered shape so that the inner diameter of the bottom cap 50 increases from the downstream end 50a toward the upstream end 50b. When the maximum inner diameter of the bottom cap 50 is Dmax and the inner diameter of the inner tube 42 is Dc, the ratio of Dc to Dmax (Dc / Dmax) is, for example, 1.4 to 2.34, preferably 1.56 to 2.01, and typically 1.75. Thus, when the inner diameter Dc of the inner tube 42 is 7.00 mm, the maximum diameter Dmax of the bottom cap 50 is, for example, 2.99 mm to 4.99 mm, preferably 3.49 mm to 4.49 mm, and typically 3.99 mm. When the diameter of the smoking article 110 is close to the inner diameter of the inner tube 42, if the maximum diameter of the bottom cap 50 and the maximum inner diameter of the inner tube 42 are within the above range, the front end of the smoking article 110 can be more reliably held by the locking portion 50d of the bottom cap 50, and a sufficient air flow path 70 can be ensured. In addition, the diameter of the bottom cap 50 here includes the inner diameter of the small diameter portion 50c in addition to the inner diameter of the portion surrounding the inner tube 42.

[0062] Next, the positional relationship between the smoking article 110 and the heating unit 41 when the smoking article 110 is inserted into the flavor inhaler 10 will be described. Figure 8 The figure briefly shows the positional relationship in the axial direction between the base material portion 110A of the smoking article 110 in the flavor inhaler 10 of the present embodiment and the heating member 43 and the inner tube 42 of the flavor inhaler 10. The axis mentioned here means the central axis of the first opening 42a in the flavor inhaler 10, and when the smoking article 110 is inserted into the first opening 42a, the axis partially coincides with the central axis of the smoking article 110.

[0063] When the axial length of the heating component 43 is set to D0 and the axial length of the substrate portion 110A of the smoking article 110 is set to L0, the length D0 can be smaller than the length L0 (D0<L0). Moreover, the ratio of the length D0 to the length L0 (D0 / L0) is greater than 0.70 and less than 0.90, preferably greater than 0.75 and less than 0.85, and typically 0.80. Thus, when the length L0 of the substrate portion 110A is 20 mm, the length D0 of the heating component 43 is greater than 14 mm and less than 18 mm, preferably greater than 15 mm and less than 17 mm, and typically 16 mm. By setting the ratio of the length D0 to the length L0 (D0 / L0) within the above range, the heating component 43 can be miniaturized in the length direction while achieving the desired aerosol generation amount.

[0064] Reference Figure 8The upstream end of the substrate portion 110A may also protrude by a length D1 to the upstream side from the upstream end of the heating component 43. The upstream and downstream mentioned here correspond to the upstream and downstream of the air flow passing through the air flow path 70 due to the user's suction action (see Figure 4 ). The protruding portion of the substrate portion 110A from the heating component 43 does not have the heating component 43 on the radially outer side thereof, so that the internal temperature thereof can be lowered somewhat compared to other portions of the substrate portion 110A. Thus, the generation of aerosols at the upstream end of the substrate portion 110A and its vicinity can be suppressed, thereby preventing the aerosols generated here from condensing in the air flow path or flowing back in the air flow path and leaking to the outside of the device. The ratio (D1 / L0) of the protruding length D1 of the substrate portion 110A to the overall length L0 is greater than 0.25 and less than 0.40, preferably greater than 0.30 and less than 0.35, and typically 0.325. Thus, when the overall length L0 of the substrate portion 110A is 20 mm, the protruding length D1 is greater than 5 mm and less than 8 mm, preferably greater than 6 mm and less than 7 mm, and typically 6.5 mm. In addition, the protruding length D1 here may also be the axial distance between the upstream end of the heating component 43 and the upstream end of the inner tube 42. By setting the ratio (D1 / L0) of the protrusion length D1 to the length L0 within the above range, it is possible to suppress the generation of aerosol at the upstream end of the substrate 110A and its vicinity and achieve sufficient aerosol generation in other portions of the substrate 110A.

[0065] Reference Figure 8 , the downstream end of the heating component 43 may also protrude to the downstream side by a length D2 than the downstream end of the substrate portion 110A. Thus, the downstream end of the substrate portion 110A and its vicinity can be fully heated, thereby preventing insufficient aerosol generation and aerosol condensation here. The ratio (D2 / L0) of the protruding length D2 of the heating component 43 to the length L0 of the substrate portion 110A is 0.075 to 0.175, preferably 0.1 to 0.15, and typically 0.125. Thus, when the length L0 of the substrate portion 110A is 20 mm, the protruding length D2 of the heating component 43 is 1.5 mm to 3.5 mm, preferably 2 mm to 3 mm, and typically 2.5 mm. By setting the ratio (D2 / L0) of the protruding length D2 to the length L0 to the above range, it is possible to generate sufficient aerosol at the downstream end of the substrate portion 110A and its vicinity, and to suppress the enlargement of the heating component 43 in the length direction.

[0066] The axial position of the upstream end of the inner tube 42 and the upstream end of the substrate portion 110A may also be roughly consistent. On the other hand, the downstream end of the inner tube 42 is the same as the downstream end of the heating component 43, and may protrude to the downstream side by a length D3 than the downstream end of the substrate portion 110A. Thus, in addition to the downstream end of the substrate portion 110A and its vicinity, the upstream end of the paper tube portion 114 and its vicinity can also be heated, thereby preventing the aerosol generated from the substrate portion 110A from being excessively cooled and condensed at the upstream end of the paper tube portion 114 and its vicinity. The ratio (D3 / D2) of the protruding length D3 of the inner tube 42 to the protruding length D2 of the heating component 43 is greater than 2.6 and less than 3.4, preferably greater than 2.8 and less than 3.2, and typically can also be 3.0. Thus, when the protruding length D2 of the heating member 43 is 2.5 mm, the protruding length D3 of the inner tube 42 is 6.5 mm to 8.5 mm, preferably 7.0 mm to 8.0 mm, and typically 7.5 mm. By setting the ratio of the protruding length D3 to the protruding length D2 (D3 / D2) within the above range, aerosol condensation at the upstream end of the paper tube 114 and its vicinity can be prevented, and the heating member 43 can be prevented from being enlarged in the length direction.

[0067] Although the embodiments of the present invention are described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical ideas described in the claims, the specification and the drawings. In addition, any shape or material that is not directly described in the specification and the drawings is within the scope of the technical ideas of the present invention as long as it plays the role and effect of the present invention.

[0068] Several aspects disclosed in this specification are described below.

[0069] According to a first embodiment, a heating assembly is provided, which comprises: a first tube component having a first opening at one end into which a fragrance generating article can be inserted, and having a second opening at the other end forming an air inlet; a heating component; and a heat insulating material. The heating assembly further comprises a second tube component arranged to surround the first tube component, a sealed area is provided between the first tube component and the second tube component, and the heating component and the heat insulating material are accommodated in the sealed area.

[0070] According to a second aspect, in the heating module of the first aspect, the heating member abuts against the first tube member, and the first tube member is formed of a metal material.

[0071] According to a third embodiment, in the heating assembly of the first embodiment or the second embodiment, the heating component is arranged on the outer peripheral side of the first tube component, and a first resin material is arranged between the heating component and the insulating material, and the first resin material imparts stress to the heating component to press the heating component against the first tube component.

[0072] According to a fourth aspect, in the heating module of the third aspect, the first resin material applies stress to the heating member by thermal contraction to press the heating member against the first tubular member.

[0073] According to a fifth aspect, in the heating module of the third aspect or the fourth aspect, an upstream end of the first resin material close to the second opening protrudes to the outside of the second cylindrical member.

[0074] According to the sixth embodiment, in the heating component of the fifth embodiment, there is a third tube component, which can be inserted into the flavor generating article and has an internal space connected to the first opening of the first tube component, the third tube component is connected to the downstream end of the first opening side of the first tube component, and the downstream end of the first resin material close to the first opening surrounds the outer periphery of the upstream end of the third tube component connected to the first opening.

[0075] According to a seventh aspect, in the heating module of the sixth aspect, the upstream end of the third tubular member surrounds an outer periphery of the downstream end of the first tubular member.

[0076] According to an eighth aspect, in any one of the heating modules of the third aspect to the seventh aspect, the length of the first resin material in the axial direction is substantially the same as the length of the first cylinder member in the axial direction.

[0077] According to a ninth aspect, in any one of the heating components of the third to eighth aspects, the first resin material is axially longer than the heating component, and the heating component is located between an upstream end of the first resin material close to the second opening and a downstream end close to the first opening.

[0078] According to the tenth embodiment, in any heating component among the third embodiment to the ninth embodiment, there is a fourth tube component, which is connected to the upstream end of the second opening side of the first tube component and forms an internal flow path for introducing air toward the second opening of the first tube component, and the upstream end of the first resin material close to the second opening surrounds the outer periphery of the fourth tube component.

[0079] According to an eleventh aspect, in the heating module of the tenth aspect, a downstream end of the fourth tubular member close to the second opening surrounds an outer periphery of the upstream end of the first tubular member.

[0080] According to the twelfth embodiment, in any heating component among the first embodiment to the eleventh embodiment, the upstream end of the second opening side of the first tube member and the downstream end of the first opening side protrude to the outside of the second tube member, and the heating member is axially accommodated between the upstream end of the second tube member close to the second opening and the downstream end close to the first opening.

[0081] According to a thirteenth aspect, in any one of the heating components of the first to twelfth aspects, the heat insulating material extends in the axial direction at least between an upstream end of the heating member close to the second opening and a downstream end close to the first opening.

[0082] According to the fourteenth aspect, in any heating component among the first aspect to the thirteenth aspect, there are annular parts extending along the circumferential direction between the end of the first opening side of the first tube part and the end of the second tube part close to the first opening, and between the end of the second opening side of the first tube part and the end of the second tube part close to the second opening.

[0083] According to a fifteenth aspect, in the heating module of the fourteenth aspect, the annular member is formed of a material having a thermal conductivity lower than that of the first tubular member and the second tubular member.

[0084] According to a sixteenth aspect, in any one of the heating components of the first to fifteenth aspects, the heat insulating material contains aerosol.

[0085] According to a seventeenth aspect, in the heating assembly of the sixteenth aspect, a ratio of the volume of the heat insulating material to the volume of the sealed area is not less than 85% and not more than 100%.

[0086] According to the eighteenth embodiment, in any one of the heating components of the first to seventeenth embodiments, there is a heater tail portion electrically connecting the heating component to the control portion, and at least a portion of the heater tail portion extends along the outer surface of the first tube component and protrudes to the outside of the enclosed area.

[0087] According to the nineteenth embodiment, in any one of the heating components of the first embodiment to the eighteenth embodiment, the heating component is configured to heat the flavor-producing article, and when the axial length of the flavor-producing substrate of the flavor-producing article is set to L0 and the axial length of the heating component is set to D0, D0 / L0 is greater than 0.7 and less than 0.9.

[0088] According to the twentieth aspect, in the heating unit of the nineteenth aspect, D0 / L0 is 0.75 or more and 0.85 or less.

[0089] According to the twenty-first embodiment, in any one of the heating components of the first embodiment to the twentieth embodiment, the heating component is configured to heat the flavor-generating article, and when the axial length of the flavor-generating substrate of the flavor-generating article is set to L0 and the axial distance between the upstream end of the heating component and the upstream end of the first tube component is set to D1, D1 / L0 is greater than 0.25 and less than 0.40.

[0090] According to the twenty-second aspect, in the heating module of the twenty-first aspect, D1 / L0 is 0.30 or more and 0.35 or less.

[0091] According to the twenty-third embodiment, in any one of the heating components of the first embodiment to the twenty-second embodiment, when the flavor generating article is accommodated inside the first tube component in such a manner that the upstream end of the flavor generating article is axially aligned with the upstream end of the first tube component, the downstream end of the heating component is located on the downstream side of the downstream end of the flavor generating substrate of the flavor generating article, and when the axial distance between the downstream end of the heating component and the downstream end of the flavor generating substrate of the flavor generating article is set to D2 and the axial length of the flavor generating substrate of the flavor generating article is set to L1, D2 / L1 is greater than 0.075 and less than 0.175.

[0092] According to a twenty-fourth aspect, in the heating module of the twenty-third aspect, D2 / L1 is 0.1 or more and 0.15 or less.

[0093] According to the twenty-fifth embodiment, in any one of the heating components of the first embodiment to the twenty-third embodiment, when the flavor-generating article is accommodated inside the first tube component in such a manner that the upstream end of the flavor-generating article is axially aligned with the upstream end of the first tube component, the downstream end of the heating component and the downstream end of the first tube component are located on the downstream side of the downstream end of the flavor-generating substrate of the flavor-generating article, and the downstream end of the first tube component is located on the downstream side of the downstream end of the heating component, and when the axial distance between the downstream end of the heating component and the downstream end of the flavor-generating substrate of the flavor-generating article is set to D2 and the axial distance between the downstream end of the first tube component and the downstream end of the flavor-generating substrate of the flavor-generating article is set to D3, D3 / D2 is greater than 2.6 and less than 3.4.

[0094] According to the twenty-sixth aspect, in the heating module of the twenty-fifth aspect, D3 / D2 is 2.8 or more and 3.2 or less.

[0095] According to a twenty-seventh aspect, there is provided a flavor inhaler including a heating component according to any one of the first to twenty-sixth aspects.

[0096] According to the twenty-eighth aspect, a fragrance inhaler is provided, which has an air flow path for connecting an air inlet with an air outlet. The air flow path has a first hollow tube forming a part of an opening for accommodating a fragrance source from the outside, a second hollow tube constituting a part of a heating component, and a third hollow tube having a locking portion for positioning the fragrance source. In the direction from the air inlet toward the air outlet, the third hollow tube, the second hollow tube, and the first hollow tube are sequentially arranged, and the first hollow tube, the second hollow tube, the second hollow tube, and the third hollow tube respectively have overlapping areas in the length direction, and the overlapping areas are all sealed.

[0097] According to a twenty-ninth aspect, in the flavor inhaler of the twenty-eighth aspect, the second hollow tube has a cylindrical shape.

[0098] According to a thirtieth aspect, in the flavor inhaler of the twenty-eighth aspect or the twenty-ninth aspect, the second hollow tube is configured to accommodate the flavor source therein and to be in contact with at least a portion of the flavor source.

[0099] According to the thirty-first aspect, in any one of the flavor inhalers of the twenty-eighth to thirtieth aspects, the first hollow tube has a receiving portion in the overlapping region, which can receive the downstream end of the second hollow tube and has an inner diameter larger than the outer diameter of the downstream end of the second hollow tube.

[0100] According to the thirty-second aspect, in any one of the flavor inhalers of the twenty-eighth to thirty-first aspects, the third hollow tube has a receiving portion in the overlapping region, which can receive the upstream end of the second hollow tube and has an inner diameter larger than the outer diameter of the upstream end of the second hollow tube.

[0101] According to the thirty-third aspect, in any one of the flavor inhalers of the twenty-eighth to thirty-second aspects, the third hollow tube has a first flavor source locking portion in a region different from the overlapping region, and the first flavor source locking portion has an inner diameter smaller than the inner diameter of the second hollow tube.

[0102] According to the thirty-fourth embodiment, in any one of the fragrance inhalers in the twenty-eighth to the thirty-third embodiments, there is a fourth hollow tube arranged to surround the second hollow tube, the upstream end of the fourth hollow tube surrounds the downstream end of the third hollow tube, and / or the downstream end of the fourth hollow tube surrounds the upstream end of the first hollow tube.

[0103] According to a thirty-fifth aspect, in the flavor inhaler of any one of the twenty-eighth aspect to the thirty-fourth aspect, a contact portion between the inner surface of the first hollow tube and the outer surface of the second hollow tube in the overlapping region is engaged with an adhesive.

[0104] According to the thirty-sixth aspect, in the flavor inhaler of any one of the twenty-eighth aspect to the thirty-fifth aspect, the contact portion between the outer surface of the second hollow tube and the inner surface of the third hollow tube in the overlapping region is engaged with an adhesive.

[0105] According to the thirty-seventh embodiment, in any one of the fragrance inhalers of the twenty-eighth embodiment to the thirty-sixth embodiment, there is a shell that accommodates at least a portion of each of the first hollow tube, the second hollow tube and the third hollow tube, the shell has an inlet connected to the interior of the third hollow tube, and the end of the third hollow tube that is different from the end having the overlapping area with the second hollow tube is arranged adjacent to the inlet of the shell.

[0106] According to a thirty-eighth aspect, in any one of the flavor inhalers of the twenty-eighth aspect to the thirty-seventh aspect, the first hollow tube has a second flavor source locking portion on its inner surface for locking the flavor source.

[0107] According to a thirty-ninth aspect, in any one of the flavor inhalers of the twenty-eighth aspect to the thirty-eighth aspect, the second hollow tube is formed of a metal material, and the first hollow tube and the third hollow tube are formed of a resin material.

[0108] According to a 40th aspect, in any one of the 28th to 39th aspects, the flavor inhaler comprises a sleeve member having an opening, wherein the sleeve member forms a part of the opening.

[0109] According to the 41st aspect, in the flavor inhaler of the 40th aspect, an end portion of the first hollow tube different from the end portion having the overlapping region with the second hollow tube is engaged with the cover member.

[0110] According to a 42nd aspect, in the flavor inhaler of the 41st aspect, a hollow rubber material is provided at the engaging end portion between the cover member and the first hollow tube.

[0111] According to a 43rd aspect, in the flavor inhaler of the 42nd aspect, the cover member has a housing portion for housing the rubber material.

[0112] According to a 44th aspect, in the flavor inhaler according to any one of the 40th to 43rd aspects, the inner diameter of the cover member is larger than the outer diameter of the first hollow tube, and the cover member surrounds at least a portion of the first hollow tube.

[0113] According to a 45th aspect, in any one of the 40th to 44th aspects, the flavor inhaler comprises a movable cover member for allowing or restricting the entry and exit of the flavor source into the opening of the cover member or the inner wall of the first hollow tube.

[0114] According to a forty-sixth aspect, in the flavor inhaler of any one of the twenty-eighth aspect to the forty-fifth aspect, the second hollow tube partitions a part of a space for accommodating a heating member for heating the flavor source.

[0115] According to the 47th aspect, in any one of the 28th to 46th aspects of the flavor inhaler, when the maximum inner diameter of the third hollow tube is set to Smax and the maximum outer diameter of the flavor source is set to Sc, Sc / Smax is greater than or equal to 1.4 and less than or equal to 2.34.

[0116] According to the 48th aspect, in the flavor inhaler of the 47th aspect, Sc / Smax is 1.56 to 2.01.

[0117] Description of Reference Numerals

[0118] 10…Aroma Attractor

[0119] 11…Housing

[0120] 12…Hood

[0121] 12a…Opening

[0122] 14…Cover

[0123] 15…Vent

[0124] 16…Cap

[0125] 17…External fins

[0126] 17a…Containment Sector

[0127] 21…Power supply

[0128] 24…Rubber material

[0129] 30…Circuit Department

[0130] 41…Heating element

[0131] 42…Inner tube

[0132] 43…Heating element

[0133] 44…Aerosol

[0134] 45…Outer tube

[0135] 46 ... first annular member

[0136] 47 ... second annular member

[0137] 48…Top Cap

[0138] 50…Bottom cap

[0139] 50c…Trail section

[0140] 50d…Fixing part

[0141] 52…Heat shrink tube

[0142] 54…Confined area

[0143] 56…Heater tail

[0144] 70…Air flow path

[0145] 110…Smoking articles

[0146] 111…filling

Claims

1. A heating component, characterized in that: The invention comprises: a first cylinder member having a first opening at one end into which a fragrance generating article can be inserted, and a second opening at the other end which forms an air inlet; a heating member; and a heat insulating material. The heating assembly further includes a second tube member arranged to surround the first tube member. A sealed area is provided between the first tube member and the second tube member, and the heating member and the heat insulating material are accommodated in the sealed area.

2. The heating assembly according to claim 1, characterized in that The heating member is in contact with the first tube member. The first cylinder member is formed of a metal material.

3. The heating assembly according to claim 1, characterized in that The heating member is provided on the outer peripheral side of the first tube member, providing a first resin material between the heating member and the heat insulating material, The first resin material applies stress to the heating member so as to press the heating member against the first tubular member.

4. The heating assembly according to claim 3, characterized in that The first resin material applies stress to the heating member by thermal contraction, thereby pressing the heating member against the first cylindrical member.

5. The heating assembly according to claim 3, characterized in that: An upstream end of the first resin material close to the second opening protrudes to the outside of the second cylinder member.

6. The heating assembly according to claim 5, characterized in that A third barrel component is provided, the third barrel component can be inserted into the aroma generating article and has an inner space communicating with the first opening of the first barrel component, The third tube member is connected to the downstream end of the first opening side of the first tube member, The downstream end of the first resin material close to the first opening surrounds the outer periphery of the upstream end of the third tube member connected to the first opening.

7. The heating assembly according to claim 6, characterized in that The upstream end of the third tube member surrounds the outer periphery of the downstream end of the first tube member.

8. The heating assembly according to claim 3, characterized in that The length of the first resin material in the axial direction is substantially the same as the length of the first tube member in the axial direction.

9. The heating assembly according to claim 3, characterized in that: The first resin material is longer in the axial direction than the heating member, The heating member is located between an upstream end of the first resin material close to the second opening and a downstream end close to the first opening.

10. The heating assembly according to claim 3, characterized in that A fourth cylinder member is connected to the upstream end of the first cylinder member on the second opening side and forms an internal flow path for introducing air toward the second opening of the first cylinder member. An upstream end of the first resin material close to the second opening surrounds the outer circumference of the fourth cylinder member.

11. The heating assembly according to claim 10, characterized in that A downstream end of the fourth tube member close to the second opening surrounds an outer periphery of the upstream end of the first tube member.

12. The heating assembly according to claim 1, characterized in that The upstream end of the first tube member on the second opening side and the downstream end on the first opening side protrude to the outside of the second tube member. The heating member is accommodated between an upstream end of the second cylindrical member close to the second opening and a downstream end close to the first opening in the axial direction.

13. The heating assembly according to claim 1, characterized in that The heat insulating material extends in the axial direction at least between an upstream end of the heating member close to the second opening and a downstream end close to the first opening.

14. The heating assembly according to claim 1, characterized in that An annular member extending in the circumferential direction is provided between the end of the first tube member on the first opening side and the end of the second tube member close to the first opening and between the end of the first tube member on the second opening side and the end of the second tube member close to the second opening.

15. The heating assembly according to claim 14, characterized in that The annular member is formed of a material having lower thermal conductivity than the first tubular member and the second tubular member.

16. The heating assembly according to claim 1, characterized in that The thermal insulation material comprises an aerosol.

17. The heating assembly according to claim 1, characterized in that A heater tail portion is provided for electrically connecting the heating element to a control portion, At least a portion of the heater tail extends along an outer surface of the first cylinder member and protrudes to the outside of the sealed area.

18. The heating assembly according to claim 1, characterized in that The heating component is configured to heat the aroma generating article. When the length of the flavor generation substrate of the flavor generation article in the axial direction is represented by L0 and the length of the heating member in the axial direction is represented by D0, D0 / L0 is greater than or equal to 0.7 and less than or equal to 0.

9.

19. The heating assembly according to claim 18, characterized in that D0 / L0 is greater than or equal to 0.75 and less than or equal to 0.

85.

20. The heating assembly according to claim 1, characterized in that The heating component is configured to heat the aroma generating article. When the axial length of the flavor generating substrate of the flavor generating article is L0 and the axial distance between the upstream end of the heating member and the upstream end of the first tube member is D1, D1 / L0 is greater than or equal to 0.25 and less than or equal to 0.

40.

21. The heating assembly according to claim 20, characterized in that D1 / L0 is greater than or equal to 0.30 and less than or equal to 0.

35.

22. The heating assembly according to claim 1, characterized in that When the flavor generating article is housed inside the first tube component in such a manner that the upstream end of the flavor generating article is axially aligned with the upstream end of the first tube component, the downstream end of the heating component is located downstream of the downstream end of the flavor generating substrate of the flavor generating article.

23. A scent absorber, characterized in that: The heating device comprises the heating component according to any one of claims 1 to 22.

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