Aerosol generation system

Abstract

[Problem] To provide a system in which a heating unit can be suitably disposed. [Solution] This aerosol generating system comprises: a tubular member that has an opening into which an aerosol generating base material containing an aerosol source can be inserted; and a heating unit. The tubular member has a bottom wall that closes at least a portion of an end section on the opposite side of the opening, and the heating unit, which is configured in a planar shape, is folded along a boundary portion of an outer surface of the bottom wall of the tubular member and an outer surface of a side wall of the tubular member, and is disposed along the outer surface of the bottom wall of the tubular member and the outer surface of the side wall of the tubular member.

Description

Technical Field

[0001] The present invention relates to an aerosol generation system.

Background Art

[0002] Suction devices that generate substances to be inhaled by users, such as electronic cigarettes and nebulizers, have become widespread. For example, the suction device uses a base material including an aerosol source for generating an aerosol and a flavor source for imparting a flavor component to the generated aerosol, etc., to generate an aerosol to which a flavor component is imparted. The user can enjoy the flavor by inhaling the aerosol to which the flavor component is imparted, which is generated by the suction device. The operation of the user inhaling the aerosol is hereinafter also referred to as a puff or a puff operation.

[0003] In a suction device that generates an aerosol by heating a base material, improvement of heating efficiency is required. For example, Patent Document 1 below discloses a technique for improving heating efficiency by heating while pressing the base material.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] According to Patent Document 1 above, by arranging a heating part at a part that presses the base material, the base material can be heated more efficiently. Therefore, it is desirable that the heating part can be arranged at an appropriate position.

[0006] Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a mechanism capable of appropriately arranging a heating part.

Means for Solving the Problem

[0007] According to an aspect of the present invention, in order to solve the above problems, there is provided an aerosol generation system including a cylindrical member having an opening into which an aerosol generation substrate containing an aerosol source can be inserted, and a heating unit. The cylindrical member has a bottom wall that closes at least a part of an end opposite to the opening. The heating unit is configured in a planar shape, bent along a boundary portion between an outer surface of the bottom wall of the cylindrical member and an outer surface of a side wall of the cylindrical member, and disposed along the outer surface of the bottom wall of the cylindrical member and the outer surface of the side wall of the cylindrical member.

[0008] The side wall of the cylindrical member has a pressing portion whose inner surface and outer surface are configured as planes. The pressing portion presses the aerosol generation substrate inserted into the cylindrical member. The heating unit may be bent along a boundary portion between an outer surface of the bottom wall of the cylindrical member and an outer surface of the pressing portion of the cylindrical member, and disposed along the outer surface of the bottom wall of the cylindrical member and the outer surface of the pressing portion of the cylindrical member.

[0009] The cylindrical member has two or more of the pressing portions. The heating unit may be bent along a boundary portion between an outer surface of the bottom wall of the cylindrical member and each of the outer surfaces of the two or more pressing portions of the cylindrical member, and disposed along the outer surface of the bottom wall of the cylindrical member and each of the outer surfaces of the two pressing portions of the cylindrical member.

[0010] The heating unit has a heat generating region and a non-heat generating region, and the heating unit may be bent in the non-heat generating region.

[0011] A convex portion protruding from the outer surface of the bottom wall is provided on the bottom wall of the cylindrical member, a hole is provided in the heating unit, and the heating unit may be disposed around the cylindrical member in a state where the convex portion of the cylindrical member passes through the hole of the heating unit.

[0012] The hole of the heating unit may be circumscribed to the convex portion of the cylindrical member.

[0013] The hole of the heating part and the shape of the convex part of the cylindrical member on a plane orthogonal to the longitudinal direction of the cylindrical member may be a circle.

[0014] The heating part has a heat generating region and a non - heat generating region, and the hole of the heating part may be surrounded by the non - heat generating region.

[0015] A part of the heating part may be arranged along a part of the outer surface of the bottom wall of the cylindrical member excluding the convex part.

[0016] A part of the heating part may be arranged along the outer surface of the cylindrical member, and another part of the heating part may be bent from the bottom wall of the cylindrical member in a direction away from the opening of the cylindrical member.

[0017] The heating part has a heat generating region and a non - heat generating region, and a part of the heating part bent in a direction away from the opening of the cylindrical member may be the non - heat generating region.

[0018] A part of the heating part bent in a direction away from the opening of the cylindrical member may be connected to a power supply part that applies an electric current to the heating part at an end farther from the opening of the cylindrical member.

[0019] The heating part is formed by arranging a conductive track on a planar insulating base material. The heating part has a heat generating region and a non - heat generating region, and the electrical resistance of the conductive track arranged in the heat generating region may be higher than the electrical resistance of the conductive track arranged in the non - heat generating region.

[0020] The non - heat generating region of the heating part may be arranged on the bottom wall of the cylindrical member and on the side of the side wall of the cylindrical member closer to the bottom wall, and the heat generating region of the heating part may be arranged on the side of the side wall of the cylindrical member closer to the opening.

[0021] In the heat generation region of the heating part, the conductive tracks may form a parallel circuit.

[0022] At an end of the heat generation region of the heating part that is far from the non-heat generation region, the conductive tracks may be folded back.

[0023] The heating part is configured by arranging conductive tracks on a planar insulating base material. The heating part has a heat generation region and a non-heat generation region. The conductive tracks arranged in the heat generation region are made of SUS, and the conductive tracks arranged in the non-heat generation region are made of a material containing at least one of copper or nickel. The insulating base material may be made of polyimide.

[0024] The aerosol generation system may further include a heat transfer layer having a predetermined thermal conductivity. The heat transfer layer may be wound so as to cover at least a part of the heating part arranged along the outer surface of the cylindrical member and the side wall of the cylindrical member.

[0025] The heat transfer layer may be made of graphite.

[0026] The aerosol generation system may further include the aerosol generation substrate.

Advantages of the Invention

[0027] As described above, according to the present invention, a mechanism capable of appropriately arranging the heating part is provided.

Brief Description of the Drawings

[0028]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Mode for Carrying Out the Invention

[0029] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant descriptions are omitted.

[0030] <1. Configuration Example of Suction Device> The suction device is a device that generates a substance to be suctioned by the user. Hereinafter, it will be described on the assumption that the substance generated by the suction device is an aerosol. Alternatively, the substance generated by the suction device may be a gas.

[0031] FIG. 1 is a schematic diagram schematically showing a configuration example of a suction device. As shown in FIG. 1, the suction device 100 according to this configuration example includes a power supply unit 111, a sensor unit 112, a notification unit 113, a storage unit 114, a communication unit 115, a control unit 116, a heating unit 40, a chamber 50, and a heat insulation unit 70.

[0032] The power supply unit 111 stores electric power. Then, based on the control by the control unit 116, the power supply unit 111 supplies electric power to each component of the suction device 100. The power supply unit 111 can be configured by a rechargeable battery such as a lithium-ion secondary battery, for example.

[0033] The sensor unit 112 acquires various information regarding the suction device 100. As an example, the sensor unit 112 is composed of a pressure sensor such as a condenser microphone, a flow rate sensor, a temperature sensor, etc., and acquires values associated with suction by the user. As another example, the sensor unit 112 is composed of an input device such as a button or a switch that receives input of information from the user.

[0034] The notification unit 113 notifies the user of information. The notification unit 113 is composed of, for example, a light-emitting device that emits light, a display device that displays an image, a sound output device that outputs sound, or a vibration device that vibrates.

[0035] The storage unit 114 stores various information for the operation of the suction device 100. The storage unit 114 is composed of a non-volatile storage medium such as a flash memory, for example.

[0036] The communication unit 115 is a communication interface capable of performing communication conforming to any wired or wireless communication standard. As such a communication standard, for example, Wi-Fi (registered trademark), or Bluetooth (registered trademark), etc. can be adopted.

[0037] The control unit 116 functions as an arithmetic processing unit and a control device, and controls the overall operations within the suction device 100 according to various programs. The control unit 116 is realized by, for example, an electronic circuit such as a CPU (Central Processing Unit) and a microprocessor.

[0038] The chamber 50 houses and holds the stick-shaped substrate 150. The chamber 50 has an opening 52 that communicates the internal space 80 formed in the suction device 100 with the external space. The stick-shaped substrate 150 can be inserted into the internal space 80 of the chamber 50 through the opening 52. The chamber 50 houses the stick-shaped substrate 150 inserted into the internal space 80 from the opening 52.

[0039] The stick-shaped substrate 150 includes a substrate portion 151 and a suction port portion 152. The substrate portion 151 contains an aerosol source. When the aerosol source is atomized, an aerosol is generated. The aerosol source is, for example, a polyhydric alcohol such as glycerin and propylene glycol, and a liquid such as water. The aerosol source may contain a tobacco-derived or non-tobacco-derived flavor component. When the suction device 100 is a medical inhaler such as a nebulizer, the aerosol source may contain a drug. Note that the aerosol source is not limited to a liquid and may be a solid. In a state where the stick-shaped substrate 150 is held by the chamber 50, at least a part of the substrate portion 151 is housed in the internal space 80, and at least a part of the suction port portion 152 protrudes from the opening 52. Then, when the user bites and sucks the suction port portion 152 protruding from the opening 52, the aerosol generated from the substrate portion 151 reaches the user's oral cavity.

[0040] The heating unit 40 atomizes the aerosol source by heating the aerosol source to generate an aerosol. As an example, the heating unit 40 is configured in a film shape and is arranged to cover the outer periphery of the chamber 50. When the heating unit 40 generates heat, the substrate portion 151 of the stick-shaped substrate 150 is heated from the outer periphery, and an aerosol is generated. The heating unit 40 generates heat when powered by the power supply unit 111.

[0041] The heat insulation part 70 prevents heat transfer from the heating part 40 to other components. For example, the heat insulation part 70 is composed of a vacuum heat insulating material, an aerogel heat insulating material, or the like.

[0042] The configuration example of the suction device 100 has been described above.

[0043] The stick-shaped substrate 150 is an example of an aerosol generating substrate containing an aerosol source. The suction device 100 and the stick-shaped substrate 150 cooperate to generate an aerosol sucked by the user. Therefore, the combination of the suction device 100 and the stick-shaped substrate 150 may be regarded as an aerosol generation system.

[0044] <2. Technical Features> (1) Configuration of heating while pressing a substrate The suction device 100 according to the present embodiment has a configuration of heating while pressing the stick-shaped substrate 150. Hereinafter, such a configuration will be described in detail.

[0045] FIG. 2 is a diagram schematically showing the physical configuration of the suction device 100 according to the present embodiment. As shown in FIG. 2, the suction device 100 has a heater assembly 30 including a heating part 40 and a chamber 50. As shown in FIG. 2, when the stick-shaped substrate 150 is accommodated in the heater assembly 30 (more specifically, the chamber 50), there is a gap between the heater assembly 30 and the stick-shaped substrate 150. When the user holds and sucks the stick-shaped substrate 150, the air flowing in from the opening 52 flows into the inside of the stick-shaped substrate 150 from the tip of the substrate part 151 through the gap and flows out into the user's mouth from the rear end of the suction port part 152. That is, the air sucked by the user flows in the order of the air flow 190A, the air flow 190B, and the air flow 190C and is guided into the user's oral cavity in a state of being mixed with the aerosol generated from the stick-shaped substrate 150.

[0046] FIG. 3 is a perspective view of the heater assembly 30 shown in FIG. 2. As shown in FIG. 3, the heater assembly 30 has a top cap 32, a heating section 40, and a chamber 50. The heating section 40 is disposed around the chamber 50. In this way, the heating section 40 is configured to heat the stick-shaped substrate 150 received in the chamber 50. The top cap 32 may have a function of guiding when inserting the stick-shaped substrate 150 into the chamber 50 and may be configured to fix the chamber 50 to the suction device 100.

[0047] FIG. 4 is a perspective view of the chamber 50. FIG. 5 is a cross-sectional view of the chamber 50 taken along the arrow 4-4 shown in FIG. 4. FIG. 6 is a cross-sectional view of the chamber 50 taken along the arrow 5-5 shown in FIG. 5. As shown in FIGS. 4 and 5, the chamber 50 is a bottomed cylindrical member including an opening 52, a side wall 54, and a bottom wall 56 that closes an end opposite to the opening 52. The side wall 54 has an inner surface 54a and an outer surface 54b. The bottom wall 56 has an inner surface 56a and an outer surface 56b. The stick-shaped substrate 150 is inserted into the chamber 50 through the opening 52 and is accommodated in an internal space 80 surrounded by the side wall 54 and the bottom wall 56. The chamber 50 is preferably made of a metal with high thermal conductivity and can be made of, for example, stainless steel or the like. Thereby, efficient heating of the stick-shaped substrate 150 becomes possible.

[0048] As shown in FIGS. 4 and 5, the chamber 50 has a holding portion 60 for holding the stick-shaped substrate 150. As shown in FIGS. 5 and 6, the holding portion 60 includes a pressing portion 62 that presses a part of the stick-shaped substrate 150 and a non-pressing portion 66. The pressing portion 62 has an inner surface 62a and an outer surface 62b. The non-pressing portion 66 has an inner surface 66a and an outer surface 66b. The pressing portion 62 and the non-pressing portion 66 are part of the side wall 54 of the chamber 50.

[0049] The opening 52 of the chamber 50 preferably can receive the stick-shaped substrate 150 without pressing it. The shape of the opening 52 of the chamber 50 in a plane orthogonal to the longitudinal direction of the chamber 50 (in other words, the direction in which the stick-shaped substrate 150 is inserted into the chamber 50 or the direction in which the side wall 54 of the chamber 50 extends) may be polygonal or elliptical, but is preferably circular.

[0050] As shown in FIGS. 4, 5, and 6, in the present embodiment, the chamber 50 has two or more pressing portions 62 in the circumferential direction of the chamber 50. As shown in FIGS. 5 and 6, the two pressing portions 62 of the holding portion 60 face each other. It is preferable that at least a part of the distance between the inner surfaces 62a of the two pressing portions 62 is smaller than the width of the portion disposed between the pressing portions 62 of the stick-shaped substrate 150 inserted into the chamber 50. As shown in the drawing, the inner surface 62a of the pressing portion 62 is a flat surface. The outer surface 62b of the pressing portion 62 is also a flat surface. More simply, the pressing portion 62 is a portion of the side wall 54 configured as a flat plate.

[0051] As shown in FIG. 6, the inner surface 62a of the pressing portion 62 has a pair of opposed planar pressing surfaces. On the other hand, the inner surface 66a of the non-pressing portion 66 connects both ends of the pair of planar pressing surfaces and has a pair of opposed curved non-pressing surfaces that are curved. As shown in the drawing, the curved non-pressing surface may have an overall arcuate cross section in a plane orthogonal to the longitudinal direction of the chamber 50. The outer surface 62b of the pressing portion 62 and the outer surface 66b of the non-pressing portion 66 are connected to each other at an angle, and a boundary 68 may be formed between the outer surface 62b of the pressing portion 62 and the outer surface 66b of the non-pressing portion 66. As shown in FIG. 6, the pressing portion 62 and the non-pressing portion 66 (that is, the side wall 54 of the chamber 50) may have a uniform thickness.

[0052] FIG. 7 is a longitudinal sectional view of the chamber 50 including the non-pressing portion 66 in a state where the stick-shaped substrate 150 is held by the holding portion 60. FIG. 8 is a longitudinal sectional view of the chamber 50 including the pressing portion 62 in a state where the stick-shaped substrate 150 is held by the holding portion 60. FIG. 9 is a sectional view of the chamber 50 taken along the arrow 7-7 shown in FIG. 8. In FIG. 9, the cross section of the stick-shaped substrate 150 in a state before being pressed is shown so that it is easy to understand that the stick-shaped substrate 150 is pressed in the pressing portion 62.

[0053] As shown in FIG. 9, the gap 67 between the inner surface 66a of the non-pressing portion 66 and the stick-shaped base material 150 is substantially maintained even when the stick-shaped base material 150 is held by the holding portion 60 and deformed by being pressed by the pressing portion 62. This gap 67 can communicate with the opening 52 of the chamber 50 and the end face of the stick-shaped base material 150 positioned in the chamber 50 (the lower end face in FIGS. 7 and 8, that is, the end face of the base material portion 151 shown in FIG. 2). It can also be said that this gap 67 communicates with the opening 52 of the chamber 50 and the end face of the stick-shaped base material 150 positioned in the chamber 50 and farther from the opening 52 of the chamber 50 (the lower end face in FIGS. 7 and 8, that is, the end face of the base material portion 151 shown in FIG. 2). And, an air flow path is formed from the opening 52 of the chamber 50 to the end face of the stick-shaped base material 150 positioned outside the chamber 50 (the upper end face in FIGS. 7 and 8, that is, the end face of the suction port portion 152 shown in FIG. 2) via the gap 67 and the inside of the stick-shaped base material 150. Thereby, it is not necessary to separately provide a flow path for introducing the air supplied to the stick-shaped base material 150 in the suction device 100, so the structure of the suction device 100 can be simplified. Also, since a portion of the non-pressing portion 66 that forms a part of the gap 67 is exposed, the cleaning of the flow path can be easily performed. Furthermore, since the air is heated as it passes through the gap 67, the heat dissipation by the heating portion 40 can be effectively utilized to improve the heating efficiency, and excessive cooling of the stick-shaped base material 150 due to the air flowing in with the puff can be prevented. As a result, the power consumption of the heating portion 40 can be suppressed, and the reduction of the fragrance due to the cooling of the stick-shaped base material 150 accompanying the puff can be prevented. From the viewpoint of ventilation resistance and the like, the height of the gap 67 between the inner surface 66a of the non-pressing portion 66 and the stick-shaped base material 150 is preferably 0.1 mm or more and 1.0 mm or less, more preferably 0.2 mm or more and 0.8 mm or less, and most preferably 0.3 mm or more and 0.5 mm or less.

[0054] As shown in FIG. 9, in a state where the stick-shaped base material 150 is held by the holding portion 60, the distance L between the inner surface 62a of the pressing portion 62 and the center of the stick-shaped base material 150 Ais the distance L between the inner surface 66a of the non-pressing portion 66 and the center of the stick-shaped base material 150 B is shorter. With such a configuration, the distance between the heating portion 40 disposed on the outer surface 62b of the pressing portion 62 and the center of the stick-shaped base material 150 can be made shorter than in the case where the pressing portion 62 is not provided. Therefore, the heating efficiency of the stick-shaped base material 150 can be enhanced.

[0055] As shown in FIGS. 5 to 8, on the bottom wall 56 of the chamber 50, a first convex portion 57a protruding from the inner surface 56a of the bottom wall 56 is provided. The first convex portion 57a has, for example, a frustum shape with a flat top surface. The top surface of the first convex portion 57a is configured to be smaller than at least the end surface of the stick-shaped base material 150. Thereby, as shown in FIGS. 7 and 8, the bottom wall 56 supports a part of the stick-shaped base material 150 inserted into the chamber 50 by the first convex portion 57a so that at least a part of the end surface of the stick-shaped base material 150 is exposed. Further, the bottom wall 56 can support a part of the stick-shaped base material 150 by the first convex portion 57a so that the exposed end surface of the stick-shaped base material 150 communicates with the gap 67.

[0056] As shown in FIGS. 5 to 8, on the bottom wall 56 of the chamber 50, a second convex portion 57b protruding from the outer surface 56b of the bottom wall 56 is provided. The second convex portion 57b has, for example, a cylindrical shape with a flat top surface. And the second convex portion 57b is disposed at the central portion of the bottom wall 56 of the chamber 50.

[0057] As shown in FIGS. 6 and 9, the inner surface 66a of the non-pressing portion 66 of the holding portion 60 is curved in a plane orthogonal to the longitudinal direction of the chamber 50. The shape of the inner surface 66a of the non-pressing portion 66 in the plane orthogonal to the longitudinal direction of the chamber 50 is preferably the same as the shape of the opening 52 in the plane orthogonal to the longitudinal direction of the chamber 50 at an arbitrary position in the longitudinal direction of the chamber 50. In other words, the inner surface 66a of the non-pressing portion 66 is preferably formed by extending the inner surface of the chamber 50 forming the opening 52 in the longitudinal direction.

[0058] As shown in FIGS. 3 to 5, the chamber 50 preferably has a cylindrical non-retaining portion 69 between the opening 52 and the retaining portion 60. The non-retaining portion 69 is a portion of the chamber 50 that does not contribute to the retention of the stick-shaped substrate 150. For example, on a plane orthogonal to the longitudinal direction of the chamber 50, the non-retaining portion 69 can be formed larger than the stick-shaped substrate 150. Thereby, a gap can be formed between the non-retaining portion 69 and the stick-shaped substrate 150 in a state where the stick-shaped substrate 150 is held by the retaining portion 60.

[0059] As shown in FIGS. 5 to 9, it is preferable that the outer peripheral surface of the retaining portion 60 has the same shape and size (the outer peripheral length of the retaining portion 60 on a plane orthogonal to the longitudinal direction of the retaining portion 60) over the entire longitudinal length of the retaining portion 60.

[0060] Also, as shown in FIGS. 4 and 5, the chamber 50 preferably has a first guide portion 58 provided with a tapered surface 58a that connects the inner surface of the chamber 50 (i.e., the non-retaining portion 69) forming the opening 52 and the inner surface 62a of the pressing portion 62. Since the pressing portion 62 and the non-retaining portion 69 are smoothly connected by the first guide portion 58, it becomes possible to suitably guide the stick-shaped substrate 150 to the retaining portion 60 in the process of inserting the stick-shaped substrate 150 into the chamber 50.

[0061] As shown in FIG. 3, the heating portion 40 is disposed around the chamber 50. Therefore, when the heating portion 40 generates heat, the chamber 50 is heated from the outside, and the stick-shaped substrate 150 is heated by heat transfer from the chamber 50. Thereby, it becomes possible to generate an aerosol from the stick-shaped substrate 150.

[0062] As shown in FIG. 3, the heating unit 40 is disposed on the outer surface 62b of the pressing unit 62. The heating unit 40 is preferably disposed on the outer surface 62b of the pressing unit 62 without any gaps. Further, the heating unit 40 is preferably disposed over the entire outer surface 62b of the pressing unit 62. However, the heating unit 40 is preferably disposed so as not to protrude from the outer surface 62b of the pressing unit 62. Of course, the heating unit 40 may be disposed so as to protrude from the outer surface 62b of the pressing unit 62 to the outer surface 66b of the non-pressing unit 66.

[0063] As shown in FIG. 3, the heating unit 40 has a heat generating region 44 and a non-heat generating region 45. The heat generating region 44 is a region that generates heat when an electric current is applied to the heating unit 40. The non-heat generating region 45 is a region that does not generate heat or generates extremely little heat even when an electric current is applied to the heating unit 40. The heat generating region 44 is disposed on the outer surface 62b of the pressing unit 62. According to such a configuration, it is possible to efficiently heat the stick-shaped base material 150 while pressing the stick-shaped base material 150 with the pressing unit 62.

[0064] As described above, the suction device 100 according to the present embodiment holds and heats the stick-shaped base material 150 while pressing it with the pressing unit 62. With such a configuration, various effects described below can be achieved.

[0065] First, the thermal conductivity from the heating unit 40 to the stick-shaped base material 150 is improved. That is, the heating efficiency of the stick-shaped base material 150 can be improved. Since the heating efficiency of the stick-shaped base material 150 is improved, the temperature of the stick-shaped base material 150 can reach the target temperature quickly, so the time required for preheating (heating from the start of heating until puffing becomes possible) can be shortened. Further, since the heating efficiency of the stick-shaped base material 150 is improved, the followability of the temperature of the stick-shaped base material 150 with respect to the temperature change of the heating unit 40 can be improved. As a result, first, the control of the aerosol generation amount can be made easier. Second, even if the temperature of the stick-shaped base material 150 drops due to puffing by the user, it can immediately return to the original temperature. Third, the influence of the external environment such as the outside air temperature can be reduced.

[0066] Further, the suction device 100 according to the present embodiment heats the stick-shaped base material 150 from the outer periphery while pressing it. With such a configuration, regardless of the shape of the aerosol source in the stick-shaped base material 150, it is possible to improve the heating efficiency of the stick-shaped base material 150 and the temperature followability of the stick-shaped base material 150 as described above. Further, with such a configuration, regardless of the error in the shape or size of the stick-shaped base material 150 due to variations occurring in the manufacturing process of the stick-shaped base material 150, it is possible to improve the heating efficiency of the stick-shaped base material 150 and the temperature followability of the stick-shaped base material 150 as described above. On the other hand, in a comparative example in which a blade-shaped heating part is inserted into the stick-shaped base material 150 and the stick-shaped base material 150 is heated from the inside, it may be difficult to achieve these effects. This is because, in this comparative example, even if the stick-shaped base material 150 is pressed from the outer periphery, it may be difficult to bring the blade-shaped heating part into good contact with the aerosol source in the stick-shaped base material 150.

[0067] Also, in the suction device 100 according to the present embodiment, the heat generation region 44 of the heating part 40 is arranged in the pressing part 62 that presses the stick-shaped base material 150. Therefore, the suction device 100 according to the present embodiment heats the stick-shaped base material 150 at the pressing part 62. According to such a configuration, compared with a comparative example in which the heat generation region 44 of the heating part 40 is arranged not only at the pressing part 62 but also at the non-pressing part 66 and the stick-shaped base material 150 is heated from the entire circumference, the heating efficiency can be improved. This is because it is possible to narrow the area of the heat generation region 44 and increase the watt density.

[0068] In the suction device 100 according to the present embodiment, the heat insulating portion 70 can be arranged so as to surround the heater assembly 30 from the outside. In that case, since the outer surface 62b of the pressing portion 62 is located closer to the center of the internal space 80 than the outer surface 66b of the non-pressing portion 66, the thickness of the air layer formed between the outer surface 62b of the pressing portion 62 and the inner surface of the heat insulating portion 70 can be increased. Alternatively, the thickness of the heat insulating portion 70 superimposed on the pressing portion 62 can be increased. Therefore, the heat insulating effect by the heat insulating portion 70 can be improved.

[0069] (2) Configuration for preventing displacement of the heating portion 40 The suction device 100 according to the present embodiment has a configuration for preventing displacement of the heating portion 40. Hereinafter, the configuration for preventing displacement of the heating portion 40 will be described in detail.

[0070] Here, displacement refers to the deviation between the ideal arrangement of the heating portion 40 and the actual arrangement of the heating portion 40. There are two types of displacement: displacement during manufacturing and displacement during use. Displacement during manufacturing is the displacement that occurs when the heating portion 40 is arranged around the chamber 50. Displacement during use is the displacement that occurs during the process of using the manufactured suction device 100. Hereinafter, unless otherwise specified, displacement refers to both displacement during manufacturing and displacement during use. The ideal arrangement of the heating portion 40 in the present embodiment means that, as shown in FIG. 3, the heat generation region 44 of the heating portion 40 is arranged on the outer surface 62b of the pressing portion 62 of the chamber 50.

[0071] FIG. 10 is a diagram showing the configuration of the heating portion 40 according to the present embodiment in a plan view. FIG. 11 is a perspective view showing the state before the heating portion 40 according to the present embodiment is arranged around the chamber 50. FIG. 12 is a perspective view showing the state after the heating portion 40 according to the present embodiment is arranged around the chamber 50. FIG. 13 is a bottom view showing the state after the heating portion 40 according to the present embodiment is arranged around the chamber 50.

[0072] As shown in FIG. 10, the heating unit 40 is configured in a planar shape. Then, as shown in FIGS. 11 and 12, the heating unit 40 is bent along the outer surface of the chamber 50 and arranged along the outer surface of the chamber 50.

[0073] As shown in FIG. 10, the heating unit 40 forms a T shape in plan view in the state before bending. Then, as shown in FIGS. 11 and 12, the horizontal bar portion of the T shape of the heating unit 40 is bent along the outer surface of the chamber 50 and arranged along the outer surface of the chamber 50. On the other hand, as shown in FIG. 12, the vertical bar portion of the T shape of the heating unit 40 is bent in the direction opposite to the horizontal bar portion of the T shape and separated from the outer surface of the chamber 50.

[0074] As shown in FIG. 10, a hole 43 is provided in the heating unit 40. More specifically, the hole 43 is provided in the central portion of the T shape in the state before bending.

[0075] As shown in FIG. 10, the heating unit 40 can be configured by arranging conductive tracks 41 (41a to 41e) on a planar insulating substrate 42. The conductive track 41 is a circuit formed of a conductive material. The insulating substrate 42 is a substrate formed of an insulating material. Examples of the insulating material include polyimide. For example, the heating unit 40 may be a film heater configured by sandwiching the conductive track between two polyimide films. Other examples of the insulating material include PET (Polyethylene terephthalate) and fluororesin.

[0076] As shown in FIG. 10, the heating unit 40 has a heat generating region 44 and a non-heat generating region 45. The heat generating region 44 is a region that generates heat when an electric current is applied to the heating unit 40. The non-heat generating region 45 is a region that does not generate heat or generates extremely little heat even when an electric current is applied to the heating unit 40. That is, the electrical resistance of the conductive tracks 41 (41b, 41d) arranged in the heat generating region 44 is higher than the electrical resistance of the conductive tracks 41 (41a, 41c, 41e) arranged in the non-heat generating region 45. As an example, as shown in FIG. 10, the conductive tracks 41 arranged in the heat generating region 44 may be configured to be thin, and the conductive tracks 41 arranged in the non-heat generating region 45 may be configured to be wide. Thereby, the above-described magnitude relationship of the electrical resistance can be realized. Further, the conductive tracks 41 arranged in the heat generating region 44 may be made of, for example, SUS (steel use stainless). On the other hand, the conductive tracks 41 arranged in the non-heat generating region 45 may be made of a material containing at least one of copper or nickel, for example. Specifically, the conductive tracks 41 arranged in the non-heat generating region 45 may be formed by plating SUS with copper and nickel. At that time, for example, the thickness of SUS may be 30 μm, the thickness of nickel may be 30 μm, and the thickness of copper may be 5 μm. With such a configuration, not only can the above-described magnitude relationship of the electrical resistance be realized, but also the heat resistance of the conductive tracks 41 in the heat generating region 44 can be increased. Of course, the material constituting the conductive tracks 41 is not limited to the above example, and may be other materials such as aluminum.

[0077] As shown in FIG. 10, in the heat generation region 44 of the heating unit 40, the conductive tracks 41 may form a parallel circuit. For example, the conductive track 41b forms a parallel circuit in which two paths are in parallel at two locations before and after folding back at the end of the heat generation region 44. Similarly, the conductive track 41d forms a parallel circuit in which two paths are in parallel at two locations before and after folding back at the end of the heat generation region 44. Of course, the number of parallel paths is not limited to 2, and may be 3 or more, or the number of parallel paths before and after folding back may be different. According to such a configuration, it is possible to reduce the unevenness of the heat distribution in the heat generation region 44. Also, in the non-heat generation region 45 of the heating unit 40, the conductive tracks 41 may form a parallel circuit. That is, the conductive tracks 41a, 41c, and 41e may form a parallel circuit. The more the number of parallel paths increases, the narrower the width of one conductive track becomes, so that it becomes possible to easily bend the non-heat generation region 45.

[0078] As shown in FIG. 10, the conductive track 41b is folded back at the end of the heat generation region 44 of the heating unit 40 on the side far from the non-heat generation region 45, and is connected to each of the conductive track 41a and the conductive track 41c disposed around the hole 43. Similarly, the conductive track 41d is folded back at the end of the heat generation region 44 of the heating unit 40 on the side far from the non-heat generation region 45, and is connected to each of the conductive track 41e and the conductive track 41c disposed around the hole 43. In this way, the conductive track 41 is arranged so as to bypass the hole 43 from the lower end of the vertical bar portion of the T-shape of the heating unit 40, go around the horizontal bar portion of the T-shape, and return to the lower end of the vertical bar portion of the T-shape again.

[0079] As shown in FIGS. 11, 12, and 13, the heating unit 40 is disposed around the chamber 50 with the second convex portion 57b provided on the bottom wall 56 of the chamber 50 passing through the hole 43 of the heating unit 40. With such a configuration, the range of possible displacement of the heating unit 40 can be limited within the range of the gap between the second convex portion 57b provided on the bottom wall 56 of the chamber 50 and the hole 43 of the heating unit 40. Therefore, it is possible to reduce the displacement of the heating unit 40.

[0080] As shown in FIGS. 11, 12, and 13, the hole 43 of the heating unit 40 circumscribes the second convex portion 57b of the chamber 50. According to such a configuration, the gap between the second convex portion 57b provided on the bottom wall 56 of the chamber 50 and the hole 43 of the heating unit 40 can be eliminated. Thereby, the range of possible displacement of the heating unit 40 can be made extremely small. That is, it becomes possible to prevent displacement of the heating unit 40.

[0081] As shown in FIG. 13, the shapes of the hole 43 of the heating unit 40 and the second convex portion 57b of the chamber 50 in a plane orthogonal to the longitudinal direction of the chamber 50 may be circular. According to such a configuration, it becomes possible to easily circumscribe the hole 43 of the heating unit 40 with the second convex portion 57b of the chamber 50. Further, according to such a configuration, in the manufacturing process, with the second convex portion 57b of the chamber 50 passing through the hole 43 of the heating unit 40, by rotating the heating unit 40 about the second convex portion 57b as a rotation axis, alignment for making the arrangement of the heating unit 40 an ideal arrangement can be facilitated. Of course, the cross-sectional shapes of the hole 43 of the heating unit 40 and the second convex portion 57b of the chamber 50 may be any shape such as a polygon or an ellipse. As an example, the cross-sectional shapes of the hole 43 of the heating unit 40 and the second convex portion 57b of the chamber 50 may be a shape in which both ends of two parallel lines of equal length are connected by two arcs, similar to the shape formed by the two pressing portions 62 and the two non-pressing portions 66 shown in FIG. 6. As another example, the cross-sectional shapes of the hole 43 of the heating unit 40 and the second convex portion 57b of the chamber 50 may be a shape in which both ends of one straight line are connected by one arc, that is, a shape of an incomplete circle.

[0082] As shown in FIG. 13, a part of the heating unit 40 is arranged along a portion of the outer surface 56b of the bottom wall 56 of the chamber 50 excluding the second convex portion 57b. According to such a configuration, the position of the heating unit 40 can be limited so that a portion of the heating unit 40 surrounding the hole 43 is in contact with (for example, in close contact with) a portion of the outer surface 56b of the bottom wall 56 of the chamber 50 excluding the second convex portion 57b. Therefore, it becomes possible to prevent displacement of the heating unit 40 in the longitudinal direction of the chamber 50.

[0083] As shown in FIGS. 11 and 12, the portion of the heating unit 40 that protrudes from the bottom wall 56 is bent. Specifically, a part of the heating unit 40 (the horizontal bar portion of the T-shape) is bent in a direction approaching the side wall 54 of the chamber 50. As a result, a part of the heating unit 40 (the horizontal bar portion of the T-shape) is arranged along the outer surface of the chamber 50. On the other hand, another part of the heating unit 40 (the vertical bar portion of the T-shape) is bent from the bottom wall 56 of the chamber 50 in a direction away from the opening 52 of the chamber 50. According to such a configuration, it is not necessary to arrange the entire heating unit 40 along the outer surface of the chamber 50. Thereby, it becomes possible to improve the degree of freedom in the design regarding the heating unit 40.

[0084] As shown in FIGS. 11 and 12, the heating unit 40 is bent in the non-heating region 45. According to such a configuration, it is possible to prevent the load caused by heat generation from being applied to the bending position. Therefore, it is possible to make it less likely for the heating unit 40 to malfunction as compared with the case where the heating unit 40 is bent in the heating region 44.

[0085] As shown in FIGS. 10 and 12, a part of the heating unit 40 that is bent in a direction away from the opening 52 of the chamber 50 is the non-heating region 45. Specifically, the portion of the non-heating region 45 where the conductive tracks 41a and 41e are arranged is bent in a direction away from the opening 52 of the chamber 50. According to such a configuration, it is possible to prevent heat transfer to other components (for example, the power supply unit 111, etc.) outside the chamber 50.

[0086] A part of the heating section 40 bent in a direction away from the opening 52 of the chamber 50 is connected to the power supply section 111 at the end farther from the opening 52 of the chamber 50. Specifically, an end 41aa of the conductive track 41a disposed in the non-heating region 45 on the side bent in a direction away from the opening 52 of the chamber 50 is connected to the power supply section 111. Similarly, an end 41ea of the conductive track 41e disposed in the non-heating region 45 on the side bent in a direction away from the opening 52 of the chamber 50 is connected to the power supply section 111. With such a configuration, it is possible to supply power to the heating section 40 while preventing heat transfer to the power supply section 111.

[0087] As shown in FIG. 10, the holes 43 of the heating section 40 are provided at positions surrounded by the non-heating region 45. Then, as shown in FIG. 12, the non-heating region 45 of the heating section 40 is disposed on the side closer to the bottom wall 56 among the bottom wall 56 and the side wall 54 of the chamber 50. On the other hand, the heating region 44 of the heating section 40 is disposed on the side closer to the opening 52 among the side walls 54 of the chamber 50. As a result, the heating region 44 is disposed at a position corresponding to the central portion of the stick-shaped substrate 150, excluding the tip portion (i.e., the side closer to the bottom wall 56) of the stick-shaped substrate 150 accommodated in the chamber 50. According to such a configuration, the area of the heating region 44 can be made smaller as compared with the case where the heating region 44 is disposed not only at the central portion of the stick-shaped substrate 150 but also at a position corresponding to the tip portion. As a result, the watt density increases, so that the stick-shaped substrate 150 can be efficiently heated. Further, by avoiding heating of the tip portion of the stick-shaped substrate 150, it is possible to prevent aerosol from leaking out from the tip portion of the stick-shaped substrate 150. As a result, a decrease in the amount of aerosol delivered to the user is prevented, and soiling of the inner surface of the chamber 50 is also prevented.

[0088] As shown in FIGS. 11, 12, and 13, the heating unit 40 is bent along the boundary portion 54c between the outer surface 56b of the bottom wall 56 of the chamber 50 and the outer surface 54b of the side wall 54, and is disposed along the outer surface 56b of the bottom wall 56 of the chamber 50 and the outer surface 54b of the side wall 54. According to such a configuration, by first disposing the heating unit 40 along the outer surface 56b of the bottom wall 56 and then bending the heating unit 40 along the boundary portion 54c, it becomes possible to easily align the heating unit 40 along the outer surface (outer surface 56b and outer surface 54b) of the chamber 50. Further, the heating unit 40 can be fixed in a state where the fold of the heating unit 40 and the boundary portion 54c are aligned. Thereby, it becomes possible to prevent the displacement of the heating unit 40.

[0089] In particular, as shown in FIGS. 11, 12, and 13, the heating unit 40 is bent along the boundary portion 62c between the outer surface 56b of the bottom wall 56 of the chamber 50 and the outer surface 62b of the pressing portion 62 of the chamber 50, and is disposed along the outer surface 56b of the bottom wall 56 of the chamber 50 and the outer surface 62b of the pressing portion 62 of the chamber 50. Since both the outer surface 56b of the bottom wall 56 and the outer surface 62b of the pressing portion 62 are flat surfaces, the boundary portion 62c is linear. Therefore, the heating unit 40 can be fixed in a state where the linear fold of the heating unit 40 and the linear boundary portion 62c are aligned. Furthermore, each of the outer surface 56b of the bottom wall 56 and the outer surface 62b of the pressing portion 62, on which the heating unit 40 is disposed, among the outer surfaces (outer surface 56b and outer surface 54b) of the chamber 50, is a flat surface. Therefore, it becomes possible to dispose the heating unit 40 configured as a flat surface without a gap along the outer surface of the chamber 50. In this way, it becomes possible to prevent the displacement of the heating unit 40.

[0090] Furthermore, as shown in FIGS. 11, 12, and 13, the heating unit 40 is bent along the boundary portion 62c between the outer surface 56b of the bottom wall 56 of the chamber 50 and each of the outer surfaces 62b of the two pressing portions 62 of the chamber 50, and is disposed along each of the outer surface 56b of the bottom wall 56 of the chamber 50 and the outer surfaces 62b of the two pressing portions 62 of the chamber 50. Here, the two pressing portions 62 are provided at positions facing each other, and the horizontal bar portion of the T-shape of the heating unit 40 is disposed along each of the outer surfaces 62b of these two opposing pressing portions 62. With such a configuration, the heating unit 40 is fixed so as to sandwich the chamber 50 from the outside of the opposing pressing portions 62. Thereby, it becomes possible to prevent the displacement of the heating unit 40.

[0091] <3. Supplementary> As described above, the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that those having ordinary knowledge in the technical field to which the present invention pertains can conceive of various modification examples or correction examples within the scope of the technical idea described in the claims, and it is naturally understood that these also belong to the technical scope of the present invention.

[0092] The suction device 100 may further have a configuration for further improving the heating efficiency by the heating unit 40. This will be described in detail with reference to FIG. 14. FIG. 14 is a perspective view of the heater assembly 30 according to a modified example. As shown in FIG. 14, a heat transfer layer 90 may be wound so as to cover at least a part of the heating unit 40 disposed along the outer surface 54b of the chamber 50 and the side wall 54 of the chamber 50. In particular, it is desirable that the heat transfer layer 90 covers the entire heat generation region 44. The heat transfer layer 90 is a sheet-like member having a predetermined thermal conductivity. It is desirable that the thermal conductivity of the heat transfer layer 90 is at least higher than the thermal conductivity of the chamber 50. As an example, the heat transfer layer 90 may be made of graphite. As another example, the heat transfer layer 90 may be made of aluminum or copper. According to such a configuration, since the portion of the chamber 50 where the heating unit 40 is not disposed can also be heated through the heat transfer layer 90, it is possible to improve the heating efficiency of the stick-shaped base material 150.

[0093] In the above embodiment, an example in which the heating unit 40 is configured as a film heater in which the conductive track 41 is sandwiched between two insulating base materials 42 has been described, but the present invention is not limited to such an example. For example, a conductive film may be used instead of the conductive track 41. A conductive film is a film having conductivity and can be formed, for example, by forming ITO (Indium Tin Oxide).

[0094] In the above embodiment, an example in which the second convex portion 57b is provided singly on the bottom wall 56 of the chamber 50 has been described, but the present invention is not limited to such an example. Two or more second convex portions 57b may be provided on the bottom wall 56 of the chamber 50. In that case, the heating unit 40 may have the same number of holes 43 as the second convex portions 57b.

[0095] In the above-described embodiment, an example in which the chamber 50 has a pair of pressing portions 62 facing each other has been described. However, the present invention is not limited to such an example. The pair of pressing portions 62 do not necessarily have to face each other. The chamber 50 may have one pressing portion 62 or may have three or more pressing portions 62. In that case, the heating unit 40 may be arranged along each of the one or more pressing portions 62. That is, the heating unit 40 is not limited to being configured to form a T shape in a plan view in the state before bending. The heating unit 40 may be configured in a shape corresponding to the relative position of the pressing portion 62 with respect to the bottom wall 56 of the chamber 50 in a plan view in the state before bending.

[0096] In the above-described embodiment, an example in which the chamber 50 is configured as a substantially cylindrical shape has been described. However, the present invention is not limited to such an example. The chamber 50 may be configured as a substantially elliptical cylinder or may be configured as a rectangular cylinder.

[0097] In the above-described embodiment, an example in which the bottom wall 56 of the chamber 50 completely closes the end portion of the chamber 50 on the side opposite to the opening 52 has been described. However, the present invention is not limited to such an example. The bottom wall 56 of the chamber 50 only needs to close at least a part of the end portion of the chamber 50 on the side opposite to the opening 52. That is, a hole may be provided in the bottom wall 56 of the chamber 50. For example, a hole penetrating through the first convex portion 57a and the second convex portion 57b may be provided, and an air flow path for introducing air into the internal space 80 of the chamber 50 may be connected to the hole.

[0098] In the above-described embodiment, an example in which the heating unit 40 is provided with the hole 43 has been described, but the present invention is not limited to such an example. The heating unit 40 only needs to be provided with a location corresponding to the second convex portion 57b provided on the bottom wall 56 of the chamber 50. Then, the heating unit 40 may be disposed around the chamber 50 in a state where the second convex portion 57b of the chamber 50 is associated with the location corresponding to the second convex portion 57b of the chamber 50 provided in the heating unit 40. For example, a notch having a size that includes the hole 43 may be provided in the T-shaped central portion of the heating unit 40 in a plan view before bending. Then, the heating unit 40 may be disposed around the chamber 50 in a state where the notch circumscribes the second convex portion 57b.

[0099] In the above-described embodiment, an example in which the second convex portion 57b is provided on the bottom wall 56 has been described, but the present invention is not limited to such an example. The bottom wall 56 only needs to be provided with an element corresponding to the hole 43 that serves as a mark for preventing displacement of the heating unit 40. For example, a circular mark corresponding to the hole 43 may be drawn on the bottom wall 56, or a recess corresponding to the hole 43 may be provided.

[0100] Note that the following configurations also fall within the technical scope of the present invention. (1) A cylindrical member having an opening into which an aerosol generating substrate containing an aerosol source can be inserted, A heating unit, and the cylindrical member has a bottom wall that closes at least a part of the end opposite to the opening, the heating unit is configured in a planar shape, bent along the boundary portion between the outer surface of the bottom wall of the cylindrical member and the outer surface of the side wall of the cylindrical member, and disposed along the outer surface of the bottom wall of the cylindrical member and the outer surface of the side wall of the cylindrical member, an aerosol generating system. (2) The side wall of the cylindrical member has a pressing portion whose inner surface and outer surface are configured as planes, the pressing portion presses the aerosol generating substrate inserted into the cylindrical member, The heating part is bent along the boundary between the outer surface of the bottom wall of the cylindrical member and the outer surface of the pressing part of the cylindrical member, and is arranged along the outer surface of the bottom wall of the cylindrical member and the outer surface of the pressing part of the cylindrical member. The aerosol generation system according to (1) above. (3) The cylindrical member has two or more of the pressing parts. The heating part is bent along the boundary between the outer surface of the bottom wall of the cylindrical member and each of the outer surfaces of two or more of the pressing parts of the cylindrical member, and is arranged along the outer surface of the bottom wall of the cylindrical member and each of the outer surfaces of the two pressing parts of the cylindrical member. The aerosol generation system according to (2) above. (4) The heating part has a heat generating region and a non-heat generating region. The heating part is bent in the non-heat generating region. The aerosol generation system according to any one of (1) to (3) above. (5) A convex portion protruding from the outer surface of the bottom wall is provided on the bottom wall of the cylindrical member. Holes are provided in the heating part. The heating part is arranged around the cylindrical member with the convex portion of the cylindrical member passing through the holes of the heating part. The aerosol generation system according to any one of (1) to (4) above. (6) The holes of the heating part are circumscribed to the convex portion of the cylindrical member. The aerosol generation system according to (5) above. (7) The shapes of the holes of the heating part and the convex portion of the cylindrical member in a plane perpendicular to the longitudinal direction of the cylindrical member are circles. The aerosol generation system according to (5) or (6) above. (8) The heating part has a heat generating region and a non-heat generating region. The holes of the heating part are surrounded by the non-heat generating region. The aerosol generation system according to any one of (5) to (7) above. (9) A part of the heating unit is arranged along a part of the outer surface of the bottom wall of the cylindrical member excluding the convex portion. The aerosol generation system according to any one of (5) to (8) above. (10) A part of the heating unit is arranged along the outer surface of the cylindrical member. Another part of the heating unit is bent from the bottom wall of the cylindrical member in a direction away from the opening of the cylindrical member. The aerosol generation system according to any one of (1) to (9) above. (11) The heating unit has a heat generation region and a non-heat generation region. A part of the heating unit bent in a direction away from the opening of the cylindrical member is the non-heat generation region. The aerosol generation system according to (10) above. (12) A part of the heating unit bent in a direction away from the opening of the cylindrical member is connected to a power supply unit that applies an electric current to the heating unit at an end of the heating unit farther from the opening of the cylindrical member. The aerosol generation system according to (10) or (11) above. (13) The heating unit is configured by arranging a conductive track on a planar insulating substrate. The heating unit has a heat generation region and a non-heat generation region. The electrical resistance of the conductive track arranged in the heat generation region is higher than the electrical resistance of the conductive track arranged in the non-heat generation region. The aerosol generation system according to any one of (1) to (12) above. (14) The non-heat generation region of the heating unit is arranged on the bottom wall of the cylindrical member and on the side of the side wall of the cylindrical member close to the bottom wall. The heat generation region of the heating unit is arranged on the side of the side wall of the cylindrical member close to the opening. The aerosol generation system according to the above (13). (15) In the heat generation region of the heating part, the conductive tracks form a parallel circuit. The aerosol generation system according to the above (13) or (14). (16) At the end of the heat generation region of the heating part, which is far from the non-heat generation region, the conductive tracks are folded back. The aerosol generation system according to any one of the above (13) to (15). (17) The heating part is formed by arranging conductive tracks on a planar insulating base material. The heating part has a heat generation region and a non-heat generation region. The conductive tracks arranged in the heat generation region are made of SUS. The conductive tracks arranged in the non-heat generation region are made of a material containing at least one of copper or nickel. The insulating base material is made of polyimide. The aerosol generation system according to any one of the above (1) to (16). (18) The aerosol generation system further includes a heat transfer layer having a predetermined thermal conductivity. The heat transfer layer is wound so as to cover at least a part of the heating part arranged along the outer surface of the cylindrical member and the side wall of the cylindrical member. The aerosol generation system according to any one of the above (1) to (17). (19) The heat transfer layer is made of graphite. The aerosol generation system according to the above (18). (20) The aerosol generation system further includes the aerosol generation base material. The aerosol generation system according to any one of the above (1) to (19).

Explanation of reference numerals

[0101] 100 Suction device 111 Power supply unit 112 Sensor unit 113 Notification unit 114 Memory unit 115 Communication unit 116 Control unit 150 Stick-shaped base material 151 Base material part 152 Suction port part 30 Heater assembly 32 Top cap 40 Heating part 41 Conductive track 42 Insulating base material 43 Hole 44 Heat generation area 45 Non-heat generation area 50 Chamber 52 Opening 54 Side wall (54a: Inner surface, 54b: Outer surface, 54c: Boundary part) 56 Bottom wall (56a: Inner surface, 56b: Outer surface) 57a First convex part 57b Second convex part 58 First guide part 58a Tapered surface 60 Holding part 62 Pressing part (62a: Inner surface, 62b: Outer surface, 62c: Boundary part) 66 Non-pressing part (66a: Inner surface, 66b: Outer surface) 67 Gap 68 Boundary 69 Non-holding part 70 Heat insulation part 80 Internal space 90 Heat transfer layer

Claims

Claim 1 A cylindrical member having an opening into which an aerosol generating substrate containing an aerosol source can be inserted, a heating part, comprising: The cylindrical member has a bottom wall that closes at least a part of the end opposite to the opening, The heating part is configured in a planar shape, bent along the boundary portion between the outer surface of the bottom wall of the cylindrical member and the outer surface of the side wall of the cylindrical member, and disposed along the outer surface of the bottom wall of the cylindrical member and the outer surface of the side wall of the cylindrical member, An aerosol generation system. Claim 2 The side wall of the cylindrical member has a pressing part whose inner surface and outer surface are configured as planes, The pressing part presses the aerosol generating substrate inserted into the cylindrical member, The heating part is bent along the boundary portion between the outer surface of the bottom wall of the cylindrical member and the outer surface of the pressing part of the cylindrical member, and disposed along the outer surface of the bottom wall of the cylindrical member and the outer surface of the pressing part of the cylindrical member, The aerosol generation system according to claim 1. Claim 3 The cylindrical member has two or more of the pressing parts, The heating part is bent along the boundary portion between the outer surface of the bottom wall of the cylindrical member and each of the outer surfaces of the two or more pressing parts of the cylindrical member, and disposed along the outer surface of the bottom wall of the cylindrical member and each of the outer surfaces of the two pressing parts of the cylindrical member, The aerosol generation system according to claim 2. Claim 4 The heating part has a heat generating region and a non-heat generating region, The heating part is bent in the non-heat generating region, The aerosol generation system according to any one of claims 1 to 3. Claim 5 A convex portion protruding from the outer surface of the bottom wall is provided on the bottom wall of the cylindrical member, A hole is provided in the heating part, The heating part is disposed around the cylindrical member in a state where the convex portion of the cylindrical member passes through the hole of the heating part, The aerosol generation system according to any one of claims 1 to 4. Claim 6 The hole of the heating part circumscribes the convex portion of the cylindrical member, The aerosol generation system according to claim 5. Claim 7 The shape of the hole of the heating part and the convex portion of the cylindrical member in a plane orthogonal to the longitudinal direction of the cylindrical member is a circle, The aerosol generation system according to claim 5 or 6. Claim 8 The heating part has a heat generating region and a non-heat generating region, The hole of the heating part is surrounded by the non-heat generating region, The aerosol generation system according to any one of claims 5 to 7. Claim 9 A part of the heating part is arranged along a part of the outer surface of the bottom wall of the cylindrical member excluding the convex part. The aerosol generation system according to any one of claims 5 to 8.

10. A part of the heating part is arranged along the outer surface of the cylindrical member. Another part of the heating part is bent from the bottom wall of the cylindrical member in a direction away from the opening of the cylindrical member. The aerosol generation system according to any one of claims 1 to 9.

11. The heating part has a heat generating region and a non-heat generating region. A part of the heating part bent in a direction away from the opening of the cylindrical member is the non-heat generating region. The aerosol generation system according to claim 10.

12. A part of the heating part bent in a direction away from the opening of the cylindrical member is connected to a power supply part that applies an electric current to the heating part at an end of the heating part farther from the opening of the cylindrical member. The aerosol generation system according to claim 10 or 11.

13. The heating part is configured by arranging a conductive track on a planar insulating base material. The heating part has a heat generating region and a non-heat generating region. The electrical resistance of the conductive track arranged in the heat generating region is higher than the electrical resistance of the conductive track arranged in the non-heat generating region. The aerosol generation system according to any one of claims 1 to 12.

14. The non-heat generating region of the heating part is arranged on the bottom wall of the cylindrical member and on the side of the side wall of the cylindrical member close to the bottom wall. The heat generating region of the heating part is arranged on the side of the side wall of the cylindrical member close to the opening. The aerosol generation system according to claim 13.

15. In the heat generating region of the heating part, the conductive tracks form a parallel circuit. The aerosol generation system according to claim 13 or 14.

16. At an end of the heat generating region of the heating part far from the non-heat generating region, the conductive track is folded back. The aerosol generation system according to any one of claims 13 to 15.

17. The heating part is configured by arranging a conductive track on a planar insulating base material. The heating part has a heat generating region and a non-heat generating region. The conductive track arranged in the heat generating region is made of SUS. The conductive track arranged in the non-heat generating region is made of a material containing at least one of copper or nickel. The insulating base material is composed of polyimide. The aerosol generation system according to any one of claims 1 to 16. **Claim 18** The aerosol generation system further includes a heat transfer layer having a predetermined thermal conductivity. The heat transfer layer is wound so as to cover at least a part of the heating part disposed along the outer surface of the side wall of the cylindrical member and the cylindrical member. The aerosol generation system according to any one of claims 1 to 17. **Claim 19** The heat transfer layer is composed of graphite. The aerosol generation system according to claim 18. **Claim 20** The aerosol generation system further includes the aerosol generation base material. The aerosol generation system according to any one of claims 1 to 19.

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