WO2020084760A1

WO2020084760A1 - Heating assembly and flavor inhaler provided with same

Info

Publication number: WO2020084760A1
Application number: PCT/JP2018/039861
Authority: WO
Inventors: 山田　学; 竹内　学; 康信井上; 干城隅井
Original assignee: 日本たばこ産業株式会社
Priority date: 2018-10-26
Filing date: 2018-10-26
Publication date: 2020-04-30
Also published as: JP7338018B2; CN112955041A; TW202015750A; JP2024026385A; EP3871533A1; EP3871533A4; JP7135098B2; JP2023159322A; JP7406670B2; JP2022172246A; JPWO2020084760A1

Abstract

The present invention provides an inhaler cartridge and an inhaler which have a novel structure.　Provided is a heating assembly comprising: a first cylindrical member having at one end a first opening into which a flavor-generating article can be inserted, and having at the other end a second opening forming an air inlet; a heating member; and an insulating material. The heating assembly further comprises a second cylindrical member disposed so as to surround the first cylindrical member. A sealed area is provided between the first cylindrical member and the second cylindrical member, and the heating member and the insulating material are accommodated in the sealed area.

Description

Heating assembly and flavor suction device including the same

The present invention relates to a heating assembly and a flavor inhaler including the heating assembly.

Conventionally, a flavor inhaler for inhaling a flavor or the like without burning the material has been known. As such a flavor inhaler, for example, a smoking material heating device is known, which forms an aerosol by heating a smoking material made of tobacco containing a volatile component (see Patent Document 1). The smoking material heating device described in Patent Document 1 has a hollow cylindrical heater.

Japanese Patent Publication No. 2018-522551

The object of the present invention is to provide a heating assembly and a flavor inhaler with a new structure.

According to one aspect of the present invention, a first tubular member having a first opening into which a flavor generating article can be inserted at one end and a second opening forming an air inlet at the other end, a heating member, and heat insulation. And a heating assembly is provided. The heating assembly further includes a second tubular member that surrounds the first tubular member, and a sealed area is provided between the first tubular member and the second tubular member. A heating element and the insulating material are housed in the enclosed area.

According to another aspect of the present invention, there is provided a flavor inhaler including the heating assembly.

It is the whole perspective view of the flavor suction device concerning this embodiment. 1 is an overall perspective view of a flavor inhaler according to the present embodiment with a smoking article held therein. It is sectional drawing of a smoking article. FIG. 3B is a cross-sectional view taken along the line 3-3 shown in FIG. 1A. FIG. 6 shows a cross-sectional view of the heating assembly. FIG. 6 shows a side view of the heating assembly. It is an expanded sectional view of the connection part of a heating assembly and an outer fin. FIG. 6 is an enlarged schematic cross-sectional view of the heating assembly. It is a figure which shows simply the axial positional relationship between the base material part of a smoking article, the heating member of a flavor suction device, and the inner side tube in the flavor suction device of this embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings described below, the same or corresponding components are designated by the same reference numerals, and duplicate description will be omitted.

FIG. 1A is an overall perspective view of the flavor inhaler according to the present embodiment. FIG. 1B is an overall perspective view of the flavor inhaler according to the present embodiment with a smoking article held. The flavor inhaler 10 according to the present embodiment heats, for example, a smoking article 110 (corresponding to an example of a flavor generating article) having a flavor source (corresponding to an example of a flavor generating base material) including an aerosol source. And is configured to generate an aerosol containing a flavor.

As shown in FIGS. 1A and 1B, the flavor inhaler 10 has a top housing 11A, a bottom housing 11B, a cover 12, a switch 13, and a lid portion 14. The top housing 11A and the bottom housing 11B are connected to each other to form the outermost housing 11 of the flavor inhaler 10. The housing 11 is sized to fit in the hand of the user. When the user uses the flavor suction device 10, the flavor suction device 10 can be held by hand to suck the flavor.

The top housing 11A has an opening (not shown), and the cover 12 is coupled to the top housing 11A so as to close the opening. As shown in FIG. 1B, the cover 12 has an opening 12a into which the smoking article 110 can be inserted. The lid portion 14 is configured to open and close the opening 12a of the cover 12. Specifically, the lid portion 14 is attached to 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. . Thereby, the lid portion 14 can allow or restrict the access of the smoking article 110 to the inside of the flavor inhaler 10 (the opening of the outer fin 17 or the opening of the top cap 48 described later).

The switch 13 is used to switch the operation of the flavor inhaler 10 on and off. For example, as shown in FIG. 1B, when the user operates the switch 13 with the smoking article 110 inserted in the opening 12a, electric power is supplied from a power source (not shown) to a heating member (not shown) to burn the smoking article 110. It can be heated without. When the smoking article 110 is heated, the aerosol is evaporated from the aerosol source included in the smoking article 110, and the flavor of the flavor source is taken into the aerosol. The user can inhale the aerosol containing the flavor by inhaling the portion of the smoking article 110 protruding from the flavor inhaler 10 (the portion shown in FIG. 1B). In this specification, the longitudinal direction of the flavor inhaler 10 refers to the direction in which the smoking article 110 is inserted into the opening 12a.

Next, the configuration of the smoking article 110 used in the flavor inhaler 10 according to the present embodiment will be described. FIG. 2 is a cross-sectional view of smoking article 110. In the embodiment shown in FIG. 2, the smoking article 110 includes a base material portion 110A including a filler 111 (corresponding to an example of a flavor generating base material) and a first wrapping paper 112 around which the filler 111 is wound. And a suction portion 110B forming an end portion on the opposite side to the base material portion 110A. The base material portion 110A and the mouthpiece portion 110B are connected by a second wrapping paper 113 different from the first wrapping paper 112. However, it is also possible to omit the second wrapping paper 113 and use the first wrapping paper 112 to connect the base portion 110A and the mouthpiece 110B.

2 has a paper tube section 114, a filter section 115, and a hollow segment section 116 arranged between the paper tube section 114 and the filter section 115. The hollow segment portion 116 is composed of, for example, a filling layer having one or a plurality of hollow channels and a plug wrapper covering the filling layer. Since the packing density of the fibers in the packed bed is high, air and aerosol flow only through the hollow channels during suction, and hardly flow in the packed bed. In the smoking article 110, when it is desired to reduce the decrease due to the filtration of the aerosol component in the filter portion 115, it is effective to shorten the length of the filter portion 115 and replace it with the hollow segment portion 116 in order to increase the amount of delivered aerosol. Is.

The mouthpiece 110B in FIG. 2 is composed of three segments, but in the present embodiment, the mouthpiece 110B may be composed of one or two segments, or four or more segments. It may be configured. For example, the hollow segment portion 116 may be omitted, and the paper tube portion 114 and the filter portion 115 may be arranged adjacent to each other to form the suction port portion 110B.

In the embodiment shown in FIG. 2, the length of the smoking article 110 in the longitudinal direction is preferably 40 mm or more and 90 mm or less, more preferably 50 mm or more and 75 mm or less, and further preferably 50 mm or more and 60 mm or less. . The circumference of the smoking article 110 is preferably 15 mm or more and 25 mm or less, more preferably 17 mm or more and 24 mm or less, and further preferably 20 mm or more and 23 mm or less. In the smoking article 110, the length of the base material portion 110A may be 20 mm, the length of the first wrapping paper 112 may be 20 mm, the length of the hollow segment portion 116 may be 8 mm, and the length of the filter portion 115 may be 7 mm. The length of each of these individual segments can be appropriately changed according to the manufacturing suitability, the required quality, and the like.

In the present embodiment, the filling material 111 of the smoking article 110 may contain an aerosol source that is heated at a predetermined temperature to generate an aerosol. The type of aerosol source is not particularly limited, and various substances extracted from natural products and / or their constituents can be selected according to the application. Aerosol sources can include, for example, glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof. The content of the aerosol source in the filler 111 is not particularly limited, and is usually 5% by weight or more, and preferably 10% by weight or more, from the viewpoint of sufficiently generating an aerosol and imparting a good flavor and taste. In addition, it is usually 50% by weight or less, and preferably 20% by weight or less.

The filling 111 of the smoking article 110 according to the present embodiment may contain cut tobacco as a flavor source. The material for cutting the tobacco is not particularly limited, and known materials such as lamina and medium bone can be used. When the circumference of the smoking article 110 is 22 mm and the length thereof is 20 mm, the range of the content of the filler 111 in the smoking article 110 is, for example, 200 mg or more and 400 mg or less, and preferably 250 mg or more and 320 mg or less. The water content of the filler 111 is, for example, 8% by weight or more and 18% by weight or less, and preferably 10% by weight or more and 16% by weight or less. With such a water content, the occurrence of winding stain is suppressed, and the winding suitability at the time of manufacturing the base material portion 110A is improved. There is no particular limitation on the size of the tobacco cut used as the filler 111 and the method for preparing it. For example, dried tobacco leaves may be cut into a width of 0.8 mm or more and 1.2 mm or less. Further, the dried tobacco leaf is crushed to have an average particle size of 20 μm or more and 200 μm or less and homogenized, and then processed into a sheet, which is chopped into a width of 0.8 mm or more and 1.2 mm or less. Good. Further, the above-mentioned sheet-processed product may be used as the filling material 111 without being cut and subjected to the gathering process. In addition, the filler 111 may include one or more kinds of fragrances. The type of the fragrance is not particularly limited, but from the viewpoint of imparting a good taste, menthol is preferable.

In the present embodiment, the first wrapping paper 112 and the second wrapping paper 113 of the smoking article 110 can be made from a base paper having a basis weight of, for example, 20 gsm or more and 65 gsm or less, and preferably 25 gsm or more and 45 gsm or less. The thickness of the first wrapping paper 112 and the second wrapping paper 113 is not particularly limited, but is 10 μm or more and 100 μm or less, preferably 20 μm or more and 75 μm or less, from the viewpoint of rigidity, air permeability, and ease of adjustment during papermaking. And more preferably 30 μm or more and 50 μm or less.

In the present embodiment, the first wrapping paper 112 and the second wrapping paper 113 of the smoking article 110 may include a filler. The content of the filler may be 10 wt% or more and less than 60 wt% with respect to the total weight of the first wrapping paper 112 and the second wrapping paper 113, and is preferably 15 wt% or more and 45 wt% or less. . In the present embodiment, it is preferable that the amount of the filler is 15% by weight or more and 45% by weight or less with respect to the range of the preferable basis weight (25 gsm or more and 45 gsm or less). As the filler, for example, calcium carbonate, titanium dioxide, kaolin or the like can be used. Paper containing such a filler exhibits a bright white-based color that is preferable from the viewpoint of appearance used as a cigarette paper of the smoking article 110, and can permanently maintain whiteness. By including a large amount of such filler, for example, the ISO whiteness of the wrapping paper can be set to 83% or more. Further, from the viewpoint of practical use as a wrapping paper for the smoking article 110, it is preferable that the first wrapping paper 112 and the second wrapping paper 113 have a tensile strength of 8 N / 15 mm or more. This tensile strength can be increased by reducing the content of the filler. Specifically, the content can be increased by making the content of the filler smaller than the upper limit of the content of the filler shown in the range of each grammage described above.

Next, the internal structure of the flavor inhaler 10 shown in FIGS. 1A and 1B will be described. FIG. 3 is a sectional view taken along line 3-3 shown in FIG. 1A. As shown in FIG. 3, the flavor 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 includes a first circuit board 31 and a second circuit board 32 electrically connected to the first circuit board 31. The first circuit board 31 is arranged, for example, extending in the longitudinal direction as illustrated. As a result, the power supply unit 20 and the heating unit 40 are partitioned by the first circuit board 31. As a result, the heat generated in the heating unit 40 is suppressed from being transferred to the power supply unit 20.

The second circuit board 32 is arranged between the power supply unit 20 and the switch 13, and extends in a direction orthogonal to the extending direction of the first circuit board 31. The switch 13 is arranged adjacent to the second circuit board 32. When the user presses the switch 13, a part of the switch 13 may come into contact with the second circuit board 32.

The first circuit board 31 and the second circuit board 32 include, for example, a microprocessor and the like, and can control the supply of electric power from the power supply unit 20 to the heating unit 40. Accordingly, 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.

The power supply unit 20 has a power supply 21 electrically connected to the first circuit board 31 and the second circuit board 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 board 31 and the second circuit board 32. Thereby, the power source 21 can supply power to the heating unit 40 so as to appropriately heat the smoking article 110. Further, as illustrated, the power source 21 is disposed adjacent to the heating assembly 41 in a direction orthogonal to the longitudinal direction of the heating unit 40. Thereby, even if the size of the power supply 21 is increased, it is possible to suppress the length of the flavor inhaler 10 from increasing in the longitudinal direction.

The flavor inhaler 10 also 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. When the power source 21 is a rechargeable battery, by connecting an external power source to the terminal 22, a current can be passed 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 flavor inhaler 10 may be transmitted to an external device.

The heating unit 40 has a heating assembly 41 extending in the longitudinal direction as shown in the figure. The heating assembly 41 is composed of a plurality of tubular members, and has a tubular body as a whole. The heating assembly 41 is configured so that a part of the smoking article 110 can be housed therein, and has a function of defining a flow path of air supplied to the smoking article 110 and a function of heating the smoking article 110 from the outer periphery.

A vent hole 15 (corresponding to an example of an air inlet) for inflowing air into the heating assembly 41 is formed in the bottom housing 11B. Specifically, vent 15 is in fluid communication with one end of heating assembly 41 (the left end in FIG. 3). The flavor suction device 10 also has a detachable cap 16 at the ventilation port 15. The cap 16 is configured to allow air to flow into the heating assembly 41 from the vent hole 15 even when attached to the vent hole 15, and may have, for example, a through hole or a notch or the like not shown. By attaching the cap 16 to the ventilation hole 15, it is possible to prevent a substance generated from the smoking article 110 inserted into the heating assembly 41 from falling from the ventilation hole 15 to the outside of the housing 11.

The other end (the end on the right side in FIG. 3) of the heating assembly 41 is in fluid communication with the opening 12a (corresponding to an example of an air outlet) shown in FIG. 1B. A substantially tubular outer fin 17 is provided between the cover 12 having the opening 12 a 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. When the smoking article 110 is inserted into the flavor inhaler 10 through the opening 12a of the cover 12 as shown in FIG. 1B, it passes through the outer fins 17 and at least the filler 111 (see FIG. 2) of the smoking article 110 is removed. It is located 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 such that the opening on the cover 12 side (right side in FIG. 3) is larger than the size of the opening on the heating assembly 41 side (left side in FIG. 3). This facilitates insertion of the smoking article 110 into the outer fin 17 through the opening 12a. Further, when the smoking article 110 is not inserted into the heating assembly 41, the user can clean the inside of the heating assembly 41 by inserting a tool such as a brush through the opening 12a. The cleaning tool can also be inserted from one end of the heating assembly 41 (the left end in FIG. 3). In that case, the cap 16 is removed from the ventilation port 15 of the flavor suction device 10.

As shown in FIG. 1B, when the smoking article 110 is inserted into the flavor inhaler 10 through the opening 12a, the portion of the smoking article 110 protruding from the flavor inhaler 10 by the user, that is, the filter portion shown in FIG. When 115 is sucked, air flows into the heating assembly 41 from the vent 15. The inflowing air passes through the inside of the heating assembly 41 and reaches the mouth of the user together with the aerosol generated from the smoking article 110. Therefore, the side of the heating assembly 41 near the vent 15 is the upstream side, and the side of the heating assembly 41 near the opening 12a (the side near the outer fin 17) is the downstream side.

Next, the configuration of the heating assembly 41 shown in FIG. 3 will be described in detail. FIG. 4 shows a cross-sectional view of heating assembly 41. FIG. 5 also shows a side view of the heating assembly 41. The heating assembly 41 includes an inner tube 42 (corresponding to an example of a first tubular member), a heating member 43, an airgel 44 (corresponding to an example of a heat insulating material), and an outer tube 45 (of a second tubular member). Corresponding to one example). The inner tube 42 has a first opening 42a at one end into which the smoking article 110 can be inserted, and a second opening 42b forming an air inlet at the other end. In the present embodiment, the inner tube 42 has a cylindrical shape and is configured to come into contact with at least a part of the smoking article 110 inserted through 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.

The outer pipe 45 is arranged so as to surround the inner pipe 42, and a predetermined gap is formed between the inner pipe 42 and the outer pipe 45. The heating member 43 may be a flexible film heater configured by sandwiching a heating resistor between two films of PI (polyimide) or the like. The heating member 43 is arranged so as to contact the inner tube 42. Specifically, in the illustrated example, 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 contacts the outer surface of the inner tube 42. Since the heating member 43 is arranged along the outer peripheral surface of the inner pipe 42, it is deformed into a substantially tubular shape as a whole.

The heating assembly 41 further includes a downstream end portion (an end portion on the first opening 42a side) of the inner pipe 42 and a downstream end portion (an end portion of the inner pipe 42 near the first opening 42a). ) With a first annular member 46 extending in the circumferential direction. The heating assembly 41 includes an upstream end of the inner pipe 42 (an end on the second opening 42b side) and an upstream end of the outer pipe 45 (an end of the inner pipe 42 near the second opening 42b). ) And a second annular member 47 extending in the circumferential direction. 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. The second annular member 47 is tightly connected to the upstream end of the inner pipe 42 via a bottom cap 50 and a heat-shrinkable tube 52 described later. The first annular member 46 and the second annular member are tightly connected to the outer pipe 45. As a result, a sealed region 54 is provided between the inner pipe 42 and the outer pipe 45. The heating member 43 and the airgel 44 are housed in the sealed region 54.

A heat-shrinkable tube 52 is arranged between the heating member 43 and the airgel 44. The heat-shrinkable tube 52 has a tubular shape and maintains the state where the heating member 43 is in contact with the inner tube 42. Specifically, the heat-shrinkable tube 52 is heat-shrinked by being heated while being arranged on the outer peripheral side of the heating member 43, so that the heating member 43 is pressed against the inner pipe 42. 43 is stressed. The heat-shrinkable tube 52 can be formed of, for example, a thermoplastic resin such as perfluoroalkoxy fluororesin (PFA). In addition, in the present embodiment, the heat-shrinkable tube 52 is adopted for the purpose of maintaining the state where the heating member 43 is in contact with the inner tube 42, but the present invention is not limited to this, and any member that can achieve the same purpose is used. Can be adopted. For example, an elastic tube or the like may be adopted instead of the heat shrink tube 52.

The inner tube 42 is preferably made of a metal material such as SUS having high thermal conductivity. Thereby, the heat of the heating member 43 is easily conducted to the entire inner tube 42, and as a result, the inner tube 42 itself can exhibit the function of the heating means. The outer pipe 45 can be formed of, for example, the same metal material as the inner pipe 42. Since the airgel 44 is arranged between the heating member 43 and the outer tube 45, the heat generated from the heating member 43 is less likely to be transferred to the outer tube 45. In the present embodiment, the airgel 44 is adopted to insulate the heat generated from the heating member 43, and this may be formed of various airgel materials such as silica aerogel, carbon aerogel, and alumina aerogel. However, other heat insulating materials may be used instead of the airgel, for example, fiber type heat insulating materials such as glass wool and rock wool, and foam type heat insulating materials such as urethane foam and phenol foam may be used. Alternatively, the sealed area 54 may be evacuated to form a vacuum heat insulation space. When the airgel 44 is used as a heat insulating material, the ratio of the volume of the airgel 44 to the volume of the closed region 54 is preferably 85% or more and 100% or less. As a result, it is possible to prevent air bubbles from entering the closed space 54, and thus it is possible to prevent heat of the heating member 43, the inner tube 42, etc. from being transferred to the outer tube 45 via the air bubbles. If air bubbles are mixed in the closed space 54, the air bubbles can move freely according to the posture of the heating assembly 41 to transfer heat.

The heating assembly 41 further has a top cap 48 and a bottom cap 50. The top cap 48 and the bottom cap 50 can be formed of, for example, a resin material. The top cap 48 is a tubular member having an internal space that communicates with the first opening 42a of the inner tube 42, and is configured so that the smoking article 110 can be inserted therein. Further, as shown in FIGS. 4 and 5, the top cap 48 is connected to the downstream end of the inner pipe 42 (the end on the first opening 42a side). On the inner peripheral surface of the top cap 48, one or more convex portions 48a that are evenly spaced in the circumferential direction are provided. In this embodiment, the four protrusions 48 a are provided on the inner peripheral surface of the top cap 48. As a result, the smoking article 110 inserted into the top cap 48 is locked by providing frictional resistance, and the smoking article 110 is prevented from being accidentally pulled out of the flavor inhaler 10.

The bottom cap 50 is an elongated tubular member having a downstream end 50a connected to the upstream end of the inner pipe 42 (the end on the second opening 42b side) and an upstream end 50b opposite to the downstream end 50a. The bottom cap 50 forms an internal flow path that introduces air toward the second opening 42b of the inner pipe 42. The upstream end 50b (bottom end in the figure) of the bottom cap 50 is arranged close to or adjacent to the ventilation port 15 shown in FIG. The air from the vent hole 15 can flow from the upstream end 50b of the bottom cap 50 to the downstream end 50a, pass through the inner tube 42 and the top cap 48, and reach the mouth of the user. That is, the bottom cap 50, the inner tube 42, and the top cap 48 form an air flow path 70 that pneumatically connects the vent hole 15 and the opening 12 a of the cover 12.

Next, the details of the connecting portion between the heating assembly 41 and the outer fin 17 will be described. FIG. 6 is an enlarged cross-sectional view of a connecting portion between the heating assembly 41 and the outer fin 17. As shown in FIG. 6, a hollow rubber material 24 is provided at the connecting portion between the outer fin 17 and the top cap 48. Specifically, the upstream end of the outer fin 17 (the end on the side of the first opening 42a) surrounds at least part of the outer periphery 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 pipe 42 that can accommodate the downstream end of the top cap 48. The outer fin 17 has a housing portion 17 a for housing the rubber material 24. Specifically, the housing portion 17 a 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. As a result, 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 and may have a solid structure.

Next, the relative positional relationship among the inner tube 42, the heating member 43, the airgel 44, the outer tube 45, the top cap 48, the bottom cap 50, and the heat shrink tube 52 will be described. FIG. 7 is an enlarged schematic sectional view of the heating assembly 41. FIG. 7 is for explaining the relative positional relationship of the components of the heating assembly 41, and its specific shape, dimensions, etc. may be different from the actual one. Note that, in FIG. 7, the upstream side of the bottom cap 50 (lower side in the figure) is not shown.

As shown in the drawing, the upstream end of the top cap 48 (the end near the first opening 42a) surrounds the outer periphery of the downstream end of the inner pipe 42 (the end near the first opening 42a). 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 pipe 42, which can accommodate the downstream end of the inner pipe 42. The connecting portion between the inner surface of the top cap 48 and the outer surface of the inner tube 42 is sealed with, for example, an adhesive or the like so that gas or aerosol does not pass through the gap between the top cap 48 and the inner tube 42. Further, the downstream end of the heat-shrinkable tube 52 (the end on the side of the first opening 42a) 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. As such, the heating assembly 41 has regions of axial overlap between the top cap 48 and the inner tube 42 and between the top cap 48 and the heat shrink tube 52. Further, the overlapping regions are in close contact with each other or sealed. Thereby, the tightness between the top cap 48, the inner tube 42, and the heat shrink tube 52 can be improved.

Further, the downstream end 50a of the bottom cap 50 (the end on the side closer to the second opening 42b) surrounds the outer circumference of the upstream end of the inner pipe 42 (the end on the side of the second opening 42b). That is, the downstream end 50 a of the bottom cap 50 has an inner diameter larger than the outer diameter of the upstream end of the inner pipe 42 that can accommodate the upstream end of the inner pipe 42. The connecting portion between the inner surface of the bottom cap 50 and the outer surface of the inner pipe 42 is bonded by, for example, an adhesive or the like, and is configured so that gas or aerosol does not pass through the gap between the bottom cap 50 and the inner pipe 42. Further, the upstream end of the heat-shrinkable tube 52 (the end portion on the second opening 42b side) surrounds the outer periphery of the downstream end 50a of the bottom cap 50. The heat-shrinkable tube 52 is in close contact with the downstream end 50a of the bottom cap 50. As such, 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. Further, the overlapping regions are in close contact with each other or sealed. Thereby, the tightness between the bottom cap 50, the inner tube 42, and the heat shrinkable tube 52 can be improved.

As illustrated, the top cap 48, the inner tube 42, and the bottom cap 50 are arranged side by side in the axial direction, and adjacent ones are airtightly connected to each other to form a sealed tubular assembly. In this tubular assembly, the joint between the top cap 48 and the inner pipe cap and the joint between the inner pipe 42 and the bottom cap 50 both have a closed structure that can withstand a negative pressure of 40 kPa or more and 60 kPa or less based on atmospheric pressure. You can In particular, each joint preferably has a closed structure capable of withstanding a negative pressure of 45 kPa or more and 55 kPa or less, and typically preferably has a closed structure capable of withstanding a negative pressure of 50 kPa.

Whether or not each joint has the desired sealed structure can be tested, for example, by the method shown below. First, with one opening of the top cap 48 and the bottom cap 50 closed, a negative pressure is formed inside the tubular assembly by sucking from the other opening with a vacuum pump or the like. Suction is stopped when the negative pressure inside the tubular assembly reaches a desired value (for example, 50 kPa), and the change in pressure inside the tubular assembly when left for a certain time in that state is measured. When the pressure change at this time is smaller than a predetermined threshold value, it is determined that each joint has a desired sealing performance. The above-mentioned leaving time after the suction is stopped is, for example, 3 seconds, and the threshold value of the pressure change is 2.3 kPa.

The bottom cap 50 has a small diameter portion 50c having an inner diameter smaller than the inner diameter of the inner pipe 42. The portion of the bottom cap 50 that surrounds the outer periphery of the upstream end of the inner pipe 42 and the small diameter portion 50c form a stepped locking portion 50d. In other words, the locking portion 50d is a surface that is substantially orthogonal to the axial direction of the inner tube 42. As illustrated, the upstream end of the inner pipe 42 is arranged so as to abut the locking portion 50d. Further, when the smoking article 110 is inserted through the first opening 42a, the diameter of the small diameter portion 50c is designed so that the tip of the smoking article 110 abuts the locking portion 50d. Thereby, the smoking article 110 can be positioned.

As illustrated, the downstream end (the end on the side of the first opening 42a) and the upstream end (the end on the side of the second opening 42b) of the inner pipe 42 are configured to project to the outside of the outer pipe 45. Further, as illustrated, the heating member 43 is arranged so as to be fitted between the upstream end and the downstream end of the outer pipe 45 in the axial direction. In other words, the heating member 43 is configured so as not to come into contact with the upstream end of the inner pipe 42 protruding outside the outer pipe 45. As a result, the temperature at the upstream end of the inner pipe 42 becomes lower than the temperature at the central portion in the axial direction of the inner pipe 42. As a result, when the smoking article 110 is inserted from the first opening 42a and the smoking article 110 is in contact with the locking portion 50d, it is possible to suppress the heating of the tip portion of the smoking article 110, and thus the tip of the smoking article. It is possible to prevent unintended generation of aerosols from. Further, since the tip portion of the smoking article 110 has a relatively low temperature, the condensation and collection of the aerosol there is promoted, so that the aerosol generated on the downstream side can be prevented from flowing back through the air flow path 70. it can.

The length of the heat-shrinkable tube 52 in the axial direction is substantially the same as the length of the inner tube 42 in the axial direction. 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. Thereby, the heat shrinkable tube 52 can cover the entire heating member 43, and the heating member 43 can be brought into uniform contact with the inner tube 42. The airgel 44 extends at least between the upstream end and the downstream end of the heating member 43 in the axial direction. Thereby, the heat generated from the heating member 43 can be efficiently blocked.

The upstream end of the top cap 48 (end near the first opening 42a) is located upstream (lower side in the figure) of the downstream end of the outer pipe 45 (end near the first opening 42a). The downstream end 50 a of the bottom cap 50 is located outside the outer pipe 45. The upstream end of the heat-shrinkable tube 52 (the end near the second opening 42b) projects to the outside of the outer tube 45 and surrounds the outer periphery of the bottom cap 50 as described above.

Since the first annular member 46 and the second annular member 47 are substantially in contact with the inner pipe 42 and the outer pipe 45, when they are formed of a material having high thermal conductivity, the heat of the inner pipe 42 is reduced. Many 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 may be formed of a material having lower thermal conductivity than the inner pipe 42 and the outer pipe 45. Specifically, it may be formed of a resin such as a UV curable resin or an ultraviolet curable resin. Thereby, heat transfer from the inner pipe 42 to the outer pipe 45 can be suppressed.

The heating assembly 41 has a heater tail portion 56 that electrically connects the heating member 43 to the circuit unit 30 (corresponding to an example of a control unit) shown in FIG. 3. As shown in FIG. 7, at least a portion of the heater tail portion 56 extends along the outer surface of the inner tube 42 and the outer surface of the bottom cap 50, and projects to the outside of the sealed region 54.

The inner diameter of the bottom cap 50 may be constant from the downstream end 50a to the upstream end 50b. Further, 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 may increase 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 pipe 42 is Dc, the ratio of Dc to Dmax (Dc / Dmax) is, for example, 1.4 or more and 2.34 or less, and 1.56 or more 2 It is preferably 0.01 or less, and typically 1.75. Therefore, 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 or more and 4.99 mm or less, and preferably 3.49 mm or more and 4.49 mm or less. , Typically 3.99 mm. When the diameter of the smoking article 110 is close to the inner diameter of the inner tube 42 and the maximum diameter of the bottom cap 50 and the maximum inner diameter of the inner tube 42 are in the above ranges, the tip of the smoking article 110 is fixed to the locking portion of the bottom cap 50. It is possible to secure a sufficient air flow path 70 while surely holding it by 50d. The diameter of the bottom cap 50 here includes the inner diameter of the small diameter portion 50c, excluding the inner diameter of the portion surrounding the inner pipe 42.

Next, the positional relationship between the smoking article 110 and the heating assembly 41 when the smoking article 110 is inserted into the flavor inhaler 10 will be described. FIG. 8 schematically illustrates the positional relationship in the axial direction between the base material portion 110A of the smoking article 110 and the heating member 43 and the inner tube 42 of the flavor inhaler 10 in the flavor inhaler 10 of the present embodiment. FIG. The axis line referred to 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 line and the central axis of the smoking article 110 are partially formed. Overlap.

When the axial length of the heating member 43 is D0 and the axial length of the base material portion 110A of the smoking article 110 is L0, the length D0 can be made smaller than the length L0 (D0 < L0). Furthermore, the ratio of the length D0 to the length L0 (D0 / L0) is 0.70 or more and 0.90 or less, preferably 0.75 or more and 0.85 or less, and typically 0.80. You can Therefore, when the length L0 of the base material portion 110A is 20 mm, the length D0 of the heating member 43 is 14 mm or more and 18 mm or less, preferably 15 mm or more and 17 mm or less, and typically 16 mm. By setting the ratio of the length D0 to the length L0 (D0 / L0) within the above range, the heating member 43 can be downsized in the length direction while achieving a desired amount of generated aerosol.

Referring to FIG. 8, the upstream end of the base material portion 110A may protrude to the upstream side of the upstream end of the heating member 43 with a length D1. The upstream and the downstream here correspond to the upstream and the downstream of the air flow passing through the air passage 70 by the suction operation of the user (see FIG. 4). The portion of the base member 110A protruding from the heating member 43 does not have the heating member 43 on the outer side in the radial direction, and therefore the internal temperature thereof may be somewhat lower than that of the other portions of the base member 110A. . As a result, the generation of aerosol at the upstream end of the base material portion 110A and its vicinity can be suppressed, so that the aerosol generated there is condensed in the air flow path or leaks back to the outside of the device by flowing back through the air flow path. Can be prevented. The ratio (D1 / L0) of the protrusion length D1 to the entire length L0 of the base material portion 110A is 0.25 or more and 0.40 or less, preferably 0.30 or more and 0.35 or less, and typically May be 0.325. Therefore, when the length L0 of the entire base material portion 110A is 20 mm, the protruding length D1 is 5 mm or more and 8 mm or less, preferably 6 mm or more and 7 mm or less, and typically 6.5 mm. Note that the protrusion length D1 here can also be referred to as the axial distance between the upstream end of the heating member 43 and the upstream end of the inner pipe 42. By setting the ratio of the protrusion length D1 to the length L0 (D1 / L0) within the above range, while suppressing aerosol generation at the upstream end of the base material portion 110A and its vicinity, the base material portion 110A Sufficient aerosol generation in other parts can be achieved.

Referring to FIG. 8, the downstream end of the heating member 43 may protrude to the downstream side of the downstream end of the base material portion 110A with a length D2. As a result, the downstream end of the base material portion 110A and the vicinity thereof can be sufficiently heated, so that it is possible to prevent a shortage of the amount of generated aerosol and the occurrence of aerosol condensation. The ratio (D2 / L0) of the protruding length D2 of the heating member 43 to the length L0 of the base material portion 110A is 0.075 or more and 0.175 or less, preferably 0.1 or more and 0.15 or less, It may typically be 0.125. Therefore, when the length L0 of the base material portion 110A is 20 mm, the protruding length D2 of the heating member 43 is 1.5 mm or more and 3.5 mm or less, preferably 2 mm or more and 3 mm or less, typically 2 It may be 0.5 mm. By setting the ratio (D2 / L0) of the protrusion length D2 to the length L0 within the above range, the heating member 43 is realized while realizing sufficient aerosol generation at the downstream end of the base material portion 110A and in the vicinity thereof. It is possible to suppress an increase in size in the length direction of the.

The axial positions of the upstream end of the inner pipe 42 and the upstream end of the base material portion 110A may substantially coincide with each other. On the other hand, the downstream end of the inner pipe 42 may protrude to the downstream side with respect to the downstream end of the base material portion 110A with the length D3, like the downstream end of the heating member 43. As a result, in addition to the downstream end of the base material portion 110A and its vicinity, the upstream end of the paper tube portion 114 and its vicinity can be heated, so that the aerosol generated from the base material portion 110A can be heated at the upstream end of the paper tube portion 114 and its It can be prevented from being excessively cooled and condensed in the vicinity. The ratio (D3 / D2) of the protrusion length D3 of the inner tube 42 to the protrusion length D2 of the heating member 43 is 2.6 or more and 3.4 or less, preferably 2.8 or more and 3.2 or less, It may typically be 3.0. Therefore, 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 or more and 8.5 mm or less, and preferably 7.0 mm or more and 8.0 mm or less. , Typically 7.5 mm. By setting the ratio of the protrusion length D3 to the protrusion length D2 (D3 / D2) within the above range, the heating member 43 can prevent the aerosol condensation at the upstream end of the paper tube portion 114 and its vicinity while preventing the aerosol condensation. It is possible to suppress an increase in size in the length direction.

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 made within the scope of the claims and the technical idea described in the specification and drawings. Is possible. It should be noted that any shape or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the operation and effects of the present invention are exhibited.

Some of the forms disclosed in this specification are described below.

According to the 1st form, the 1st cylinder member which has the 1st opening which can insert a flavor generation article in one end, and has the 2nd opening which forms an air inlet in the other end, a heating member, and a heat insulating material. A heating assembly is provided. The heating assembly further includes a second tubular member that surrounds the first tubular member, and a sealed area is provided between the first tubular member and the second tubular member. A heating element and the insulating material are housed in the enclosed area.

According to the second aspect, in the heating assembly of the first aspect, the heating member is in contact with the first tubular member, and the first tubular member is made of a metal material.

According to the third aspect, in the heating assembly according to the first aspect or the second aspect, the heating member is provided on the outer peripheral side of the first tubular member, and the first heating member is provided between the heating member and the heat insulating material. Is provided, and the first resin material applies stress to the heating member so as to press the heating member against the first tubular member.

According to the fourth mode, in the heating assembly according to the third mode, the first resin material thermally contracts to apply stress to the heating member so as to press the heating member against the first tubular member. .

According to the fifth mode, in the heating assembly according to the third mode or the fourth mode, the upstream end of the first resin material close to the second opening projects to the outside of the second tubular member.

According to the sixth aspect, in the heating assembly according to the fifth aspect, the flavor generating article can be inserted, and a third tubular member having an internal space communicating with the first opening of the first tubular member is provided. The third tubular member is connected to the downstream end of the first tubular member on the first opening side, and the downstream end of the first resin material close to the first opening is the third tubular member. It surrounds the outer periphery of the upstream end of the tubular member that is connected to the first opening.

According to the seventh aspect, in the heating assembly according to the sixth aspect, the upstream end of the third tubular member surrounds the outer periphery of the downstream end of the first tubular member.

According to the eighth mode, in the heating assembly according to any one of the third mode to the seventh mode, the axial length of the first resin material is substantially the same as the axial length of the first tubular member. Is.

According to a ninth aspect, in the heating assembly according to any one of the third to eighth aspects, the first resin material is longer than the heating member in the axial direction, and the heating member is the first member. It is located between an upstream end of the resin material near the second opening and a downstream end of the resin material near the first opening.

According to the tenth aspect, in the heating assembly according to any one of the third aspect to the ninth aspect, the heating assembly is connected to the upstream end of the first tubular member on the second opening side, and the first tubular member is connected to the upstream end. A fourth tubular member that forms an internal flow path that introduces air toward the two openings is provided, and an upstream end of the first resin material near the second opening has an outer periphery of the fourth tubular member. surround.

According to the eleventh aspect, in the heating assembly according to the tenth aspect, the downstream end of the fourth tubular member near the second opening surrounds the outer periphery of the upstream end of the first tubular member.

According to the twelfth aspect, in the heating assembly according to any one of the first to eleventh aspects, the upstream end on the second opening side and the downstream end on the first opening side of the first tubular member are the first The heating member projects outside the second tubular member and is axially fitted between an upstream end of the second tubular member near the second opening and a downstream end of the second tubular member near the first opening.

According to a thirteenth aspect, in the heating assembly according to any one of the first to twelfth aspects, the heat insulating material is provided at least in the axial direction on at least the upstream end of the heating member near the second opening and the first opening. It extends to the near downstream end.

According to the fourteenth aspect, in the heating assembly according to any one of the first to thirteenth aspects, the end portion on the first opening side of the first tubular member and the first opening of the second tubular member are provided. It extends in the circumferential direction between the near end and between the end of the first tubular member on the second opening side and the end of the second tubular member near the second opening. Has an existing annular member.

According to the fifteenth aspect, in the heating assembly according to the fourteenth aspect, the annular member is formed of a material having lower thermal conductivity than the first tubular member and the second tubular member.

According to the sixteenth aspect, in the heating assembly according to any one of the first to fifteenth aspects, the heat insulating material includes airgel.

According to the seventeenth aspect, in the heating assembly according to the sixteenth aspect, the ratio of the volume of the heat insulating material to the volume of the closed region is 85% or more and 100% or less.

According to an eighteenth aspect, in the heating assembly according to any one of the first to seventeenth aspects, a heater tail portion electrically connecting the heating member to a controller is provided, and at least a part of the heater tail portion is It extends along the outer surface of the first tubular member and projects to the outside of the sealed area.

According to a nineteenth aspect, in the heating assembly according to any one of the first to eighteenth aspects, the heating member is configured to heat the flavor generating article, and the axis of the flavor generating base material of the flavor generating article. When the length in the direction is L0 and the axial length of the heating member is D0, D0 / L0 is 0.7 or more and 0.9 or less.

According to the twentieth form, in the heating assembly of the nineteenth form, D0 / L0 is 0.75 or more and 0.85 or less.

According to a twenty-first aspect, in the heating assembly according to any one of the first to twentieth aspects, the heating member is configured to heat the flavor generating article, and the axis of the flavor generating base material of the flavor generating article. When the length in the direction is L0 and the axial distance between the upstream end of the heating member and the upstream end of the first tubular member is D1, D1 / L0 is 0.25 or more and 0.40 or less. Is.

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

According to a twenty-third aspect, in the heating assembly according to any one of the first to twenty-second aspects, the flavor is provided such that an upstream end of the flavor-generating article and an upstream end of the first tubular member are axially aligned with each other. In a state where the generated article is housed inside the first tubular member, the downstream end of the heating member is located on the downstream side of the downstream end of the flavor generating base material of the flavor generating article, and When the axial distance between the downstream end and the downstream end of the flavor generating base material of the flavor generating article is D2, and the axial length of the flavor generating base material of the flavor generating article is L1, D2 / L1 is 0.075 or more and 0.175 or less.

According to the twenty-fourth form, in the heating assembly of the twenty-third form, D2 / L1 is 0.1 or more and 0.15 or less.

According to a twenty-fifth aspect, in the heating assembly according to any one of the first to twenty-third aspects, the flavor is provided such that an upstream end of the flavor-generating article and an upstream end of the first tubular member are axially aligned with each other. In a state in which the generated article is housed inside the first tubular member, the downstream end of the heating member and the downstream end of the first tubular member are downstream of the downstream end of the flavor generating base material of the flavor producing article. And the downstream end of the first tubular member is located on the downstream side of the downstream end of the heating member, and the downstream end of the heating member and the downstream end of the flavor generating base material of the flavor generating article. When the distance in the axial direction between the two is D2 and the axial distance between the downstream end of the first tubular member and the downstream end of the flavor generating base material of the flavor generating article is D3, D3 / D2 Is 2.6 or more and 3.4 or less.

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

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

According to the twenty-eighth aspect, there is provided a flavor inhaler including an air flow path for pneumatically connecting the air inlet and the air outlet. The air passage has a first hollow tube forming a part of an opening for accommodating a flavor source from the outside, a second hollow tube forming a part of a heating assembly, and the flavor source. A third hollow tube having a locking portion for performing positioning of the third hollow tube and the second hollow tube in a direction from the air inlet to the air outlet. The first hollow tube is arranged in this order, and the first hollow tube and the second hollow tube, and the second hollow tube and the third hollow tube respectively overlap in the longitudinal direction. A region, and each of the overlapping regions is sealed.

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

According to the thirtieth aspect, in the flavor inhaler of the twenty-eighth aspect or the twenty-ninth aspect, the second hollow tube accommodates the flavor source inside and contacts at least a part of the flavor source. Is composed of.

According to the 31st mode, in the flavor inhaler according to any of the 28th mode to the 30th mode, the first hollow tube can accommodate the downstream end of the second hollow tube in the overlapping region. In addition, it has an accommodating portion having an inner diameter larger than the outer diameter of the downstream end of the second hollow tube.

According to the 32nd mode, in the flavor inhaler according to any of the 28th mode to the 31st mode, the third hollow tube can accommodate the upstream end of the second hollow tube in the overlapping region. In addition, it has a housing portion having an inner diameter larger than the outer diameter of the upstream end of the second hollow tube.

According to the thirty-third aspect, in the flavor inhaler according to any of the twenty-eighth aspect to the thirty-second aspect, the third hollow tube has an inner diameter of the second hollow tube in a region different from the overlapping region. And a first flavor source lock having a smaller inner diameter.

According to the thirty-fourth aspect, in the flavor inhaler according to any one of the twenty-eighth aspect to the thirty-third aspect, the fourth aspect includes the fourth hollow tube arranged so as to surround the second hollow tube. The upstream end of the 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.

According to the thirty-fifth aspect, in the flavor inhaler according to any of the twenty-eighth aspect to the thirty-fourth aspect, the 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: It is engaged by an adhesive.

According to the thirty-sixth aspect, in the flavor inhaler according to 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 It is engaged by an adhesive.

According to the thirty-seventh aspect, in the flavor inhaler of any of the twenty-eighth aspect to the thirty-sixth aspect, each of the first hollow tube, the second hollow tube, and the third hollow tube A housing for accommodating at least a part thereof, the housing having an inlet communicating with the inside of the third hollow pipe, and a housing of the third hollow pipe and the second hollow pipe. An end different from the end having the overlap region is located adjacent to the inlet of the housing.

According to the thirty-eighth aspect, in the flavor inhaler according to any of the twenty-eighth aspect to the thirty-seventh aspect, the first hollow tube includes a second flavor source locking portion for locking the flavor source. It has on its inner surface.

According to a thirty-ninth aspect, in the flavor inhaler according to any of the twenty-eighth aspect to the thirty-eighth aspect, the second hollow tube is made of a metal material, and the first hollow tube and the third hollow tube are formed. The tube is made of a resin material.

According to the 40th mode, in the flavor inhaler according to any one of the 28th mode to the 39th mode, a sleeve member having an opening is provided, and the sleeve member forms a part of the opening.

According to the 41st mode, in the flavor inhaler according to the 40th mode, the end portion of the first hollow tube different from the end section having the overlapping region with the second hollow tube is the sleeve. Engage the member.

According to the forty-second aspect, in the flavor inhaler of the forty-first aspect, a hollow rubber material is provided at an engaging end portion of the sleeve member and the first hollow tube.

According to the forty-third form, in the flavor inhaler of the forty-second form, the sleeve member has an accommodating portion for accommodating the rubber material.

According to the 44th form, in the flavor inhaler of any of the 40th form to the 43rd form, the inner diameter of the sleeve member is larger than the outer diameter of the first hollow tube, and the sleeve member is Surrounding at least a portion of the first hollow tube.

According to the 45th mode, in the flavor inhaler according to any of the 40th mode to the 44th mode, the access of the flavor source to the opening of the sleeve member or the inner wall portion of the first hollow tube is permitted or restricted. And a movable lid member for moving.

According to the forty-sixth aspect, in the flavor inhaler according to any one of the twenty-eighth aspect to the forty-fifth aspect, the second hollow tube forms a part of a space that houses a heating member for heating the flavor source. Define.

According to the 47th mode, in the flavor inhaler according to any of the 28th mode to the 46th mode, when the maximum inner diameter of the third hollow tube is Smax and the maximum outer diameter of the flavor source is Sc, Sc / Smax is 1.4 or more and 2.34 or less.

According to the forty-eighth mode, in the flavor inhaler of the forty-seventh mode, Sc / Smax is 1.56 or more and 2.01 or less.

DESCRIPTION OF SYMBOLS 10 ... Flavor suction device 11 ... Housing 12 ... Cover 12a ... Opening 14 ... Lid 15 ... Vent 16 ... Cap 17 ... Outer fin 17a ... Housing 21 ... Power supply 24 ... Rubber material 30 ... Circuit part 41 ... Heating assembly 42 ... Inner tube 43 ... Heating member 44 ... Airgel 45 ... Outer tube 46 ... First annular member 47 ... Second annular member 48 ... Top cap 50 ... Bottom cap 50c ... Small diameter part 50d ... Locking part 52 ... Heat shrink tube 54 ... Sealing Area 56 ... Heater tail 70 ... Air flow path 110 ... Smoking article 111 ... Filling material

Claims

A heating assembly comprising: a first tubular member having a first opening into which a flavor generating article can be inserted at one end and a second opening forming an air inlet at the other end; a heating member; and a heat insulating material. hand,
Further comprising a second tubular member arranged to surround the first tubular member,
A heating assembly, wherein a sealed region is provided between the first tubular member and the second tubular member, and the heating member and the heat insulating material are housed in the sealed region.
The heating assembly according to claim 1, wherein
The heating member is in contact with the first tubular member,
The heating assembly, wherein the first tubular member is formed of a metallic material.
The heating assembly according to claim 1 or 2, wherein
The heating member is provided on the outer peripheral side of the first tubular member,
A first resin material is provided between the heating member and the heat insulating material,
The heating assembly, wherein the first resin material stresses the heating member so as to press the heating member against the first tubular member.
The heating assembly according to claim 3, wherein
The heating assembly, wherein the first resin material thermally contracts to apply stress to the heating member so as to press the heating member against the first tubular member.
The heating assembly according to claim 3 or 4, wherein
The heating assembly, wherein an upstream end of the first resin material close to the second opening projects outside the second tubular member.
The heating assembly according to claim 5, wherein
The flavor generating article can be inserted, and has a third tubular member having an internal space communicating with the first opening of the first tubular member,
The third tubular member is connected to a downstream end of the first tubular member on the first opening side,
A heating assembly in which a downstream end of the first resin material near the first opening surrounds an outer circumference of an upstream end of the third tubular member connected to the first opening.
The heating assembly according to claim 6, wherein
The heating assembly wherein the upstream end of the third tubular member surrounds the outer periphery of the downstream end of the first tubular member.
The heating assembly according to any one of claims 3 to 7, wherein
The heating assembly, wherein the axial length of the first resin material is substantially the same as the axial length of the first tubular member.
A heating assembly according to any one of claims 3 to 8, wherein
The first resin material is longer than the heating member in the axial direction,
The heating assembly is located between an upstream end of the first resin material near the second opening and a downstream end of the first resin material near the first opening.
The heating assembly according to any one of claims 3 to 9,
A fourth tubular member that is connected to the upstream end of the first tubular member on the second opening side and forms an internal flow path that introduces air toward the second opening of the first tubular member. Then
The heating assembly in which an upstream end of the first resin material near the second opening surrounds an outer periphery of the fourth tubular member.
The heating assembly according to claim 10, wherein
The heating assembly, wherein a downstream end of the fourth tubular member near the second opening surrounds an outer circumference of the upstream end of the first tubular member.
The heating assembly according to any one of claims 1 to 11,
An upstream end on the second opening side and a downstream end on the first opening side of the first tubular member project to the outside of the second tubular member,
A heating assembly in which the heating member is axially fitted between an upstream end near the second opening and a downstream end near the first opening of the second tubular member.
The heating assembly according to any one of claims 1 to 12,
The heating assembly extends axially between at least an upstream end of the heating member near the second opening and a downstream end of the heating member near the first opening.
The heating assembly according to any one of claims 1 to 13,
Between the end of the first tubular member on the side of the first opening and the end of the second tubular member close to the first opening, and the end of the first tubular member on the side of the second opening. A heating assembly having a circumferentially extending annular member between each section and an end of the second tubular member near the second opening.
The heating assembly according to claim 14, wherein:
The heating member, wherein the annular member is formed of a material having lower thermal conductivity than the first tubular member and the second tubular member.
The heating assembly according to any one of claims 1 to 15, wherein
The heating assembly, wherein the insulation comprises airgel.
The heating assembly according to any one of claims 1 to 16,
A heater tail portion that electrically connects the heating member to a control unit,
A heating assembly wherein at least a portion of the heater tail extends along an outer surface of the first tubular member and projects out of the enclosed area.
The heating assembly according to any one of claims 1 to 17,
The heating member is configured to heat the flavor generating article,
When the axial length of the flavor generating base material of the flavor generating article is L0 and the axial length of the heating member is D0, D0 / L0 is 0.7 or more and 0.9 or less. assembly.
The heating assembly according to claim 18, wherein
The heating assembly, wherein D0 / L0 is 0.75 or more and 0.85 or less.
A heating assembly according to any one of claims 1 to 19, wherein
The heating member is configured to heat the flavor generating article,
When the axial length of the flavor generating base material 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 tubular member is D1, D1 is D1. A heating assembly wherein / L0 is 0.25 or greater and 0.40 or less.
The heating assembly according to claim 20, wherein
A heating assembly, wherein D1 / L0 is greater than or equal to 0.30 and less than or equal to 0.35.
A heating assembly according to any one of claims 1 to 21, wherein
In the state where the flavor generating article is housed inside the first tubular member such that the upstream end of the flavor producing article and the upstream end of the first tubular member coincide with each other in the axial direction, The downstream end is located downstream of the downstream end of the flavor generating substrate of the flavor generating article.
A flavor inhaler provided with the heating assembly according to any one of claims 1 to 22.