Aerosol generating system

Abstract

[Problem] To provide a mechanism capable of further improving the quality of a user experience. [Solution] An aerosol-generating system comprising: a tubular body containing a substrate containing an aerosol source; a plurality of resistive heating layers which are laminated on the outer side of the side wall of the tubular body; a plurality of first electrically insulating layers laminated on an outer side of a sidewall of the tubular body inside the resistive heating layers; the power supply unit is used for supplying power to the resistance heating layers, and the tubular body is made of a conductive material; and at least one of both end portions of each resistive heating layer protrudes from the first electrically insulating layer and is connected to the tubular body, is electrically connected to another resistive heating layer adjacent to the resistive heating layer via the tubular body, and is electrically connected to the power supply unit via the other resistive heating layer.

Description

Technical Field

[0001] The present disclosure relates to an aerosol generating system. Background Art

[0002] Inhalation devices (such as electronic cigarettes and atomizers) for generating substances to be inhaled by a user are widely used. For example, an inhalation device employs an aerosol source for generating an aerosol, and a matrix including a flavor source for imparting a flavor component to the generated aerosol, etc., to generate an aerosol imparted with a flavor component. The user can enjoy the flavor by inhaling the aerosol imparted with the flavor component generated by the inhalation device. The action of the user inhaling the aerosol is also referred to as "puffing" or "puffing action" hereinafter.

[0003] There is a need to improve the heating efficiency in an inhalation device of a type that generates an aerosol by heating a matrix. For example, PTL1 listed below discloses a technique in which a coating of an electrical insulating material is formed on the surface of a heating chamber having an opening portion for receiving a matrix, and a coating of a conductive material serving as a Joule heater is further formed on the electrical insulating material.

[0004] Citation List

[0005] Patent Document

[0006] [PTL1]WO 2022 / 167261 Summary of the Invention

[0007] Technical Problem

[0008] However, the technique disclosed in PTL1 has only recently been developed and still has room for improvement in various aspects.

[0009] Therefore, the present disclosure takes into account the above problems, and the object of the present disclosure is to provide a mechanism capable of further improving the quality of the user experience.

[0010] Solution to the Problem

[0011] To solve the above problems, an aspect of the present invention provides an aerosol generating system, which includes: a tubular body that houses a substrate containing an aerosol source; a plurality of resistive heating layers that are laminated on the outer side of the side wall of the tubular body; a plurality of first electrical insulating layers that are laminated on the outer side of the side wall of the tubular body inside these resistive heating layers; and a power supply unit that is used to supply power to these resistive heating layers, wherein the tubular body is made of a conductive material; and at least one of the two end portions of each resistive heating layer protrudes from the first electrical insulating layer and is connected to the tubular body, is electrically connected to another resistive heating layer adjacent to the resistive heating layer via the tubular body, and is electrically connected to the power supply unit via the other resistive heating layer.

[0012] The side wall of the tubular body may include a plurality of first side walls having a flat outer surface and a plurality of second side walls different from these first side walls, wherein these first side walls and these second side walls are alternately arranged along the circumferential direction of the tubular body; these first electrical insulating layers are laminated on the outer side of these first side walls; and in a state where these resistive heating layers are spaced apart at these second side walls, two of these resistive heating layers are laminated on the outer sides of two first side walls adjacent to and on both sides of these second side walls.

[0013] These resistive heating layers and these first electrical insulating layers may each be laminated using a chemical vapor deposition process or a printing process.

[0014] The portion of the outer periphery of the tubular body laminated with these first electrical insulating layers may occupy less than 50% of the outer periphery of the tubular body.

[0015] These first electrical insulating layers may have a shape conforming to these resistive heating layers.

[0016] The aerosol generating system may further include a plurality of second electrical insulating layers that are laminated outside these resistive heating layers using a chemical vapor deposition process or a printing process, and at least a portion of these resistive heating layers may be sandwiched between these first electrical insulating layers and these second insulating layers.

[0017] The wire connected to the power supply unit may be connected to the tubular body, and one of the two end portions of each resistive heating layer may protrude from the first electrical insulating layer and be connected to the tubular body, and is electrically connected to the wire connected to the tubular body via the tubular body.

[0018] Among the two end portions of each resistive heating layer, the end portion protruding from each first electrical insulating layer may be connected to the first side wall.

[0019] In two end portions of each resistive heating layer, the end portions protruding from each first electrical insulating layer may protrude from the first sidewall and be connected to the second sidewall.

[0020] The wire connected to the power supply unit may be connected to one of the two end portions of each resistive heating layer.

[0021] The wire connected to the power supply unit may be connected to each of the two end portions of each resistive heating layer.

[0022] In two end portions of each resistive heating layer, the end portion to which the wire connected to the power supply unit is connected may be configured to be wider than its other portions.

[0023] The aerosol generating system may further include a first heat diffusion layer which is laminated to the outer side of the sidewall of the tubular body inside these resistive heating layers by means of an electroplating process.

[0024] The aerosol generating system may further include a second heat diffusion layer which is wound around and laminated to the outer side of the sidewall of the tubular body outside these resistive heating layers.

[0025] The aerosol generating system may further include a heat insulation layer which is wound around and laminated to the outer side of the sidewall of the tubular body outside these resistive heating layers.

[0026] The heat insulation layer may be laminated so as to cover a part of the sidewall of the tubular body in the axial direction of the tubular body, and the end portions of the heat insulation layer in the axial direction of the tubular body and the portions exposed from the heat insulation layer may be sealed by means of a sealing portion.

[0027] These resistive heating layers may be provided at positions corresponding to the portions of the substrate accommodated in the cylindrical body, and the aerosol source is distributed in these portions.

[0028] These first sidewalls may be flat plates, these second sidewalls may be curved plates bent to the outside of the tubular body along the circumferential direction of the tubular body, and the substrate accommodated in the tubular body may be pressed by these first sidewalls.

[0029] These first sidewalls may be flat plates, these second sidewalls may be flat plates, the length of these first sidewalls in the circumferential direction of the tubular body may be greater than the length of these second sidewalls, and the substrate accommodated in the tubular body may be pressed by these first sidewalls.

[0030] The aerosol generating system may further include the substrate.

[0031] Advantageous effects of the present invention

[0032] The present disclosure as described above provides a mechanism capable of further improving the quality of the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram schematically showing an example configuration of an inhalation device.

[0034] Figure 2 is a perspective view of an example of a heating system of an inhalation device according to an embodiment of the present disclosure.

[0035] Figure 3 is Figure 2 a perspective view of the shown accommodation part.

[0036] Figure 4 is along the Figure 3 shown line 4-4 of the accommodation part is a sectional view.

[0037] Figure 5 is along the Figure 4 shown line 5-5 of the accommodation part is a sectional view.

[0038] Figure 6 is a longitudinal sectional view of the accommodation part including the non-pressing part with the rod-shaped substrate held in the holding part.

[0039] Figure 7 is a longitudinal sectional view of the accommodation part including the pressing part with the rod-shaped substrate held in the holding part.

[0040] Figure 8 is along the Figure 7 shown line 7-7 of the accommodation part is a sectional view.

[0041] Figure 9 is a diagram showing an example of steps for manufacturing a heating system according to the same embodiment.

[0042] Figure 10 is a diagram showing an example of steps for manufacturing a heating system according to the same embodiment.

[0043] Figure 11 is showing Figure 10 the configuration of the shown external heat diffusion layer.

[0044] Figure 12 is showing Figure 10 the configuration of the shown heat insulation part.

[0045] Figure 13 ​​​​​​​​​​​​​Shows an example of the steps for manufacturing a heating system according to the first modification example.

[0046] Figure 14 Shows an example of the steps for manufacturing a heating system according to the second modification example.

[0047] Figure 15 Shows an example of the steps for manufacturing a heating system according to the third modification example.

[0048] Figure 16 Shows an example of the steps for manufacturing a heating system according to the fourth modification example.

[0049] Figure 17 Shows an example of the steps for manufacturing a heating system according to the fifth modification example.

[0050] Figure 18 Is a diagram schematically showing an example of the configuration of the accommodation portion and the rod-shaped substrate according to the sixth modification example.

[0051] Figure 19 Shows an example of the steps for manufacturing a heating system according to the seventh modification example. Detailed Description of the Invention

[0052] Preferred embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that in this specification and the drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and repeated descriptions are omitted.

[0053] In this specification and the drawings, components having substantially the same functional configuration may also be distinguished by using the same reference numerals followed by an index including different alphabetic or numeric characters. For example, as needed, a plurality of components having substantially the same functional configuration are distinguished as devices 1-1, 1-2, and 1-3. However, if it is not necessary to specifically distinguish between each of a plurality of components having substantially the same functional configuration, only the same reference numeral is assigned. For example, when it is not necessary to distinguish between devices 1-1, 1-2, and 1-3, devices 1-1, 1-2, and 1-3 are also simply referred to as device 1.

[0054] <1. Example Configuration of an Inhalation Device>

[0055] An inhalation device is a device for generating a substance to be inhaled by a user. Hereinafter, the substance generated by the inhalation device will be described as an aerosol. Alternatively, the substance generated by the inhalation device may be a gas.

[0056] Figure 1 Is a schematic diagram schematically showing an example configuration of an inhalation device. As Figure 1 ​​​​​​As shown, the inhalation device 100 according to this configuration example includes a power supply unit 111, a sensor unit 112, a notification unit 113, a memory unit 114, a communication unit 115, a control unit 116, a heating unit 40, a housing part 50, and a heat insulation part 70.

[0057] The power supply unit 111 stores electric power. The power supply unit 111 then supplies electric power to each component of the inhalation device 100 according to the control executed by the control unit 116. The power supply unit 111 may be configured by a rechargeable battery (such as a lithium-ion secondary battery), for example.

[0058] The sensor unit 112 acquires various types of information related to the inhalation device 100. As an example, the sensor unit 112 is configured by a pressure sensor (such as a condenser microphone, a flow rate sensor, or a temperature sensor, etc.), and acquires values associated with the user's inhalation. As another example, the sensor unit 112 is configured by an input device (such as a button or a switch) for receiving information input from the user.

[0059] The notification unit 113 notifies the user of information. For example, the notification unit 113 is configured by 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 can vibrate.

[0060] The memory unit 114 stores various types of information for the operation of the inhalation device 100. The memory unit 114 is configured by a non-volatile storage medium (such as a flash memory), for example.

[0061] The communication unit 115 is a communication interface capable of performing communication conforming to any wired or wireless communication standard. Examples of communication standards that can be used include standards adopting Wi-Fi (registered trademark), Bluetooth (registered trademark), BLE (Bluetooth Low Energy) (registered trademark), NFC (Near Field Communication), or LPWA (Low Power Wide Area).

[0062] The control unit 116 serves as an arithmetic processing device and a control device, and controls the overall operation within the inhalation device 100 according to various programs. For example, the control unit 116 is implemented by a CPU (Central Processing Unit) or an electronic circuit such as a microprocessor.

[0063] The accommodating portion 50 has an internal space 80 and holds the rod-shaped substrate 150, while accommodating a part of the rod-shaped substrate 150 in the internal space 80. The accommodating portion 50 has an opening 52, thereby allowing the internal space 80 to communicate with the outside, and the accommodating portion accommodates the rod-shaped substrate 150 that has been inserted into the internal space 80 from the opening 52. For example, the accommodating portion 50 is a tubular body including the opening 52 and having a bottom wall 56 serving as a bottom surface, and defines a columnar internal space 80. An air flow path for supplying air to the internal space 80 may be connected to the accommodating portion 50. For example, an air inlet hole is provided in the side surface of the inhalation device 100, and the air inlet hole is an inlet for air to enter the air flow path. For example, an air outlet hole is provided in the bottom wall 56, and the air outlet hole is an outlet for air to flow from the air flow path to the internal space 80.

[0064] The rod-shaped substrate 150 includes a substrate portion 151 and a mouthpiece portion 152. The substrate portion 151 includes an aerosol source. The aerosol source includes a tobacco-derived or non-tobacco-derived flavor component. If the inhalation device 100 is a medical inhaler (such as a nebulizer), the aerosol source may include a drug. For example, the aerosol source may be a liquid containing a tobacco-derived or non-tobacco-derived flavor component such as water or a polyol (e.g., glycerol or propylene glycol), or may be a solid including a tobacco-derived or non-tobacco-derived flavor component. In a state where the rod-shaped substrate 150 is held in the accommodating portion 50, at least a part of the substrate portion 151 is accommodated in the internal space 80, and at least a part of the mouthpiece portion 152 protrudes from the opening 52. Thus, when the user holds the mouthpiece portion 152 protruding from the opening 52 in their mouth and inhales, air flows into the internal space 80 via an air flow path not shown in the figure, and reaches the inside of the user's mouth together with the aerosol generated from the substrate portion 151.

[0065] The heating unit 40 heats the aerosol source to atomize the aerosol source, thereby generating an aerosol. In Figure 1 the example shown, the heating unit 40 is configured in a film shape and is provided to cover the outer periphery of the accommodating portion 50. Thus, when the heating unit 40 generates heat, the substrate portion 151 of the rod-shaped substrate 150 is heated from the outer periphery, thereby generating an aerosol. The heating unit 40 generates heat when supplied with power from the power supply unit 111. For example, power supply may be performed when the sensor unit 112 detects that the user has started inhaling and / or has input a predetermined information. Then, when the sensor unit 112 detects that the user has completed inhaling and / or has input a predetermined information, the power supply may be stopped.

[0066] The heat insulation portion 70 prevents heat from being transferred from the heating unit 40 to other components. For example, the heat insulation portion 70 is configured by a vacuum heat insulation material or an aerogel heat insulation material, etc.

[0067] An example configuration of the inhalation device 100 has been described above. The inhalation device 100 is of course not limited to the above configuration and can adopt various configurations, such as those shown by way of example below.

[0068] As an example, the accommodation part 50 may include an opening and closing mechanism (such as a hinge) for opening and closing a part of the housing that forms the internal space 80. Thus, by opening and closing the housing, the accommodation part 50 can clamp and accommodate the rod-shaped substrate 150 that has been inserted into the internal space 80. In this case, the heating unit 40 may be provided on the clamping part of the accommodation part 50 and can heat the rod-shaped substrate while pressing the rod-shaped substrate 150.

[0069] In addition, the accommodation part 50 may have a so-called countercurrent air intake and exhaust configuration. In this case, when the user sucks, air flows through the opening 52 into the internal space 80. Then, the air that has flowed in passes through the inside of the rod-shaped substrate 150 from the end of the rod-shaped substrate 150 and reaches the inside of the user's mouth together with the aerosol.

[0070] The rod-shaped substrate 150 is an example of an aerosol-generating substrate containing an aerosol source. The inhalation device 100 and the rod-shaped substrate 150 cooperate to generate the aerosol that the user is to inhale. Thus, the combination of the inhalation device 100 and the rod-shaped substrate 150 can be considered an aerosol-generating system.

[0071] <2. Technical features>

[0072] <2.1. Basic configuration>

[0073] Now reference will be made to Figures 2 to 8 describe the basic configuration of the inhalation device 100 according to the present embodiment, which is related to the heating of the rod-shaped substrate 150.

[0074] Figure 2 is a perspective view of an example of the heating system 30 of the inhalation device 100 according to the present embodiment. The heating system 30 is a system of components involved in the heating of the rod-shaped substrate 150. Figure 2 The shown heating system 30 includes a heating unit 40 and an accommodation part 50. In addition to Figure 2 the shown heating unit 40 and accommodation part 50, the heating system 30 also includes an external heat diffusion layer 90 and a heat shrink tube 99, as well as a heat insulation part 70 discussed below. As Figure 2 shown, the heating unit 40 is provided on the outside of the accommodation part 50. Thus, when the heating unit 40 generates heat, the accommodation part 50 is heated from the outside, and the rod-shaped substrate 150 is heated by the heat transferred from the accommodation part 50. This allows the generation of aerosol from the rod-shaped substrate 150.

[0075] Figure 3 is Figure 2 An oblique view of the receiving portion 50 shown. Figure 4 is a cross-sectional view of the receiving portion 50 taken along Figure 3 the line 4-4 shown. Figure 5 is a cross-sectional view of the receiving portion 50 taken along Figure 4 the line 5-5 shown. As Figures 3 to 5 shown, the receiving portion 50 is a tubular body with a bottom, and the tubular body with a bottom includes an opening 52, a side wall 54, and a bottom wall 56. The bottom wall plugs the end portion on the opposite side of 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 rod-shaped substrate 150 is inserted into the receiving portion 50 through the opening 52 and is received in the internal space 80 surrounded by the side wall 54 and the bottom wall 56. The receiving portion 50 is preferably made of a metal with high thermal conductivity and can be made of, for example, SUS (stainless steel), etc. This allows the rod-shaped substrate 150 to be heated effectively.

[0076] The rod-shaped substrate 150 is inserted and removed along the axial direction of the receiving portion 50, which is a tubular body. In the axial direction, the direction in which the rod-shaped substrate 150 is inserted is also referred to as "down", and the direction in which the rod-shaped substrate 150 is withdrawn is also referred to as "up". The axial direction is also referred to as the up-and-down direction. The up-and-down direction can be the longitudinal direction of the receiving portion 50. In the direction perpendicular to the up-and-down direction, the direction towards the central axis of the receiving portion 50 is also referred to as inwards, and the direction away from the central axis is also referred to as outwards.

[0077] As Figures 3 to 5 shown, the receiving portion 50 has a holding portion 60 that holds the rod-shaped substrate 150. The holding portion 60 includes a pressing portion 62 that presses a part of the rod-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 parts of the side wall 54 of the receiving portion 50. The pressing portion 62 is an example of a first side wall. The non-pressing portion 66 is an example of a second side wall different from the first side wall.

[0078] The opening 52 of the receiving portion 50 can preferably receive the rod-shaped substrate 150 without applying pressure to it. In other words, the opening 52 of the receiving portion 50 is preferably configured to be larger than the rod-shaped substrate 150 in a plane perpendicular to the up-and-down direction. The shape of the opening 52 of the receiving portion 50 in a plane perpendicular to the up-and-down direction can be polygonal or elliptical, but is preferably circular.

[0079] AsFigure 2 As shown, the heating unit 40 is provided on the outer surface 62b of the pressing portion 62. The heating unit 40 is preferably provided on the outer surface 62b of the pressing portion 62 without a gap. Further, the heating unit 40 is preferably provided on the entire outer surface 62b of the pressing portion 62. However, the heating unit 40 is preferably arranged so as not to protrude beyond the outer surface 62b of the pressing portion 62. Of course, the heating unit 40 may be arranged to protrude from the outer surface 62b of the pressing portion 62 onto the outer surface 66b of the non-pressing portion 66.

[0080] As Figure 2 As shown, each of the heating units 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 very little heat even when an electric current is applied to the heating unit 40. The heat generating region 44 is provided on the outer surface 62b of the pressing portion 62. With this configuration, the rod-shaped substrate 150 can be effectively heated while pressing the rod-shaped substrate 150 with the pressing portion 62.

[0081] As Figures 3 to 5 As shown, in the present embodiment, the accommodating portion 50 has two pressing portions 62 and two non-pressing portions 66. Further, the pressing portions 62 and the non-pressing portions 66 are alternately arranged along the circumferential direction of the accommodating portion 50. In particular, the two pressing portions 62 of the holding portion 60 face each other. The distance between the inner surfaces 62a of the two pressing portions 62 is at least partially smaller than the width of the portion of the rod-shaped substrate 150 that is disposed between the pressing portions 62 when inserted into the accommodating portion 50. With this configuration, the rod-shaped substrate 150 can be pressed with the two opposing pressing portions 62.

[0082] As Figures 3 to 5 As shown, the inner surface 66a of the non-pressing portion 66 of the holding portion 60 is curved in a plane perpendicular to the longitudinal direction of the accommodating portion 50. Preferably, the shape of the inner surface 66a of the non-pressing portion 66 in a plane perpendicular to the longitudinal direction of the accommodating portion 50 is the same as the shape of the opening 52 in a plane perpendicular to the longitudinal direction of the accommodating portion 50 at any position in the longitudinal direction of the accommodating portion 50. In other words, the inner surface 66a of the non-pressing portion 66 of the holding portion 60 is preferably formed by extending the inner surface of the accommodating portion 50 that forms the opening 52 in the longitudinal direction. The outer surface 66b of the non-pressing portion 66 of the holding portion 60 is curved parallel to the inner surface 66a.

[0083] As Figure 5As shown, the inner surface 62a of the pressing portion 62 includes a pair of opposing flat pressing surfaces having a flat shape. At the same time, the inner surface 66a of the non-pressing portion 66 connects the two ends of the pair of flat pressing surfaces and includes a pair of opposing curved non-pressing surfaces having a curved surface shape. As shown in the drawings, the curved non-pressing surfaces may have an overall arcuate cross-section in a plane perpendicular to the longitudinal direction of the accommodating portion 50. The outer surface 62b of the pressing portion 62 and the outer surface 66b of the non-pressing portion 66 may be 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 Figure 5 shown, the pressing portion 62 and the non-pressing portion 66 (i.e., the side wall 54 of the accommodating portion 50) may have a uniform thickness. For example, the pressing portion 62 may include a flat plate. Additionally, the non-pressing portion 66 may include a curved plate that is curved outward along the circumferential direction of the accommodating portion 50.

[0084] As Figure 3 and Figure 4 shown, the accommodating portion 50 preferably has a first guiding portion 58 having a tapered surface 58a that connects the inner surface of the accommodating portion 50 (i.e., the non-holding portion 69) forming the opening 52 and the inner surface 62a of the pressing portion 62. The first guiding portion 58 provides a smooth connection between the pressing portion 62 and the non-holding portion 69, thereby allowing the rod-shaped substrate 150 to be properly guided into the holding portion 60 during the process of inserting the rod-shaped substrate 150 into the accommodating portion 50.

[0085] As Figure 4 shown, the accommodating portion 50 preferably has a tubular non-holding portion 69 between the opening 52 and the holding portion 60. The non-holding portion 69 is a part of the accommodating portion 50 that does not contribute to holding the rod-shaped substrate 150. For example, in a plane perpendicular to the longitudinal direction of the accommodating portion 50, the non-holding portion 69 may be formed to be larger than the rod-shaped substrate 150. This allows the rod-shaped substrate 150 to be easily inserted into the accommodating portion 50.

[0086] Figure 6 is a longitudinal cross-sectional view of the accommodating portion 50 including the non-pressing portion 66 in a state where the rod-shaped substrate 150 is being held by the holding portion 60. Figure 7 is a longitudinal cross-sectional view of the accommodating portion 50 including the pressing portion 62 in a state where the rod-shaped substrate 150 is being held by the holding portion 60. Figure 8 is a cross-sectional view of the accommodating portion 50 taken along the Figure 7 line 7-7 shown. It should be noted that in Figure 8In [the figure], a cross-section taken through the rod-shaped substrate 150 in a state before being pressed is shown, so as to easily recognize that the rod-shaped substrate 150 is pressed by the pressing portion 62.

[0087] As Figure 6 shown, the rod-shaped substrate 150 is pressed by the pressing portion 66, and the inner surface 66a of the pressing portion 66 and the rod-shaped substrate 150 are in close contact with each other. At the same time, as Figure 7 shown, a gap 67 is formed between the inner surface 66a of the non-pressing portion 66 and the rod-shaped substrate 150.

[0088] As Figure 8 shown, even when the rod-shaped substrate 150 is held by the holding portion 60 and the rod-shaped substrate 150 is pressed and deformed by the pressing portion 62, the gap 67 between the inner surface 66a of the non-pressing portion 66 and the rod-shaped substrate 150 is substantially maintained. If the accommodating portion 50 has a countercurrent air intake and exhaust configuration, the gap 67 can form an air flow path that provides communication between the opening 52 and the end of the rod-shaped substrate 150.

[0089] As Figure 8 shown, in a state where the rod-shaped substrate 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 rod-shaped substrate 150 A is less than the distance L between the inner surface 66a of the non-pressing portion 66 and the center of the rod-shaped substrate 150 B . With this configuration, compared with the case where the pressing portion 62 is not provided, the distance between the heating unit 40 provided on the outer surface 62b of the pressing portion 62 and the center of the rod-shaped substrate 150 can be reduced. Therefore, the heating efficiency of the rod-shaped substrate 150 can be improved.

[0090] As Figures 3 to 8 shown, the outer peripheral surface of the holding portion 60 preferably has the same shape and size (the outer peripheral length of the holding portion 60 in a plane perpendicular to the longitudinal direction of the holding portion 60) along the entire longitudinal length of the holding portion 60. This enables the gap 67 to be ensured while uniformly pressing the rod-shaped substrate 150 over the entire holding portion 60 in the vertical direction.

[0091] As described above, the inhalation device 100 according to the present embodiment holds and heats the rod-shaped substrate while pressing the rod-shaped substrate 150 by means of the pressing portion 62. This configuration enables the heating efficiency of the rod-shaped substrate 150 to be improved compared with the case where the rod-shaped substrate 150 is heated without being pressed.

[0092] <2.2. Configuration of the heating system 30>

[0093] The heating system 30 according to the present embodiment is manufactured by sequentially laminating the components constituting the heating system 30 onto the outer side of the side wall 54 of the accommodating portion 50. Now, while referring to Figure 9 and Figure 10 the manufacturing process of the heating system 30 will be described, the configuration of the heating system 30 will also be described.

[0094] Figure 9 and Figure 10 are drawings showing an example of the process for manufacturing the heating system 30 according to the present embodiment. The process for manufacturing the heating system 30 according to the present embodiment sequentially passes through Figure 9 and Figure 10 the manufacturing steps S11 to S17 shown. Hereinafter, in some cases, the two pressing portions 62 of the holding portion 60 are distinguished as the pressing portion 62-1 and the pressing portion 62-2. Similarly, in some cases, the two non-pressing portions 66 of the holding portion 60 are distinguished as the non-pressing portion 66-1 and the non-pressing portion 66-2. In Figure 9 and Figure 10 each manufacturing step is shown in an exploded view, in which the side wall 54 of the accommodating portion 50 (specifically, the portion corresponding to the holding portion 60) is separated and exploded at the center of the non-pressing portion 66-2. The left-right direction in the exploded view corresponds to the circumferential direction of the accommodating portion 50.

[0095] In Figure 9 the manufacturing step S11, the accommodating portion 50 is shown in a state before other components are laminated onto the holding portion 60.

[0096] In Figure 9 the manufacturing step S12, first, the first electrical insulating layer 41 (41-1 and 41-2) is laminated onto the pressing portions 62. Specifically, the first electrical insulating layer 41-1 is laminated onto the outer side of the pressing portion 62-1, and the first electrical insulating layer 41-2 is laminated onto the outer side of the pressing portion 62-2. The first electrical insulating layer 41 is made of an electrical insulating material. For example, examples of materials that can be used to form the first electrical insulating layer 41 include glass and ceramics. The first electrical insulating layer 41 is laminated using a vapor deposition process or a printing process. The vapor deposition process is a process of vaporizing a substance toward the surface of a target object to form a thin film coating. The printing process is a process of ejecting a liquid toward the surface of a target object to form a thin film coating.

[0097] In Figure 9In manufacturing step S13, the resistive heating layer 42 (42-1 and 42-2) is laminated onto the outer side of the pressing portion 62 of the partially manufactured heating system 30 that has undergone manufacturing step S12. Specifically, the resistive heating layer 42-1 is laminated onto the outer side of the first electrical insulation layer 41-1 that is laminated onto the pressing portion 62-1, and the resistive heating layer 42-2 is laminated onto the outer side of the first electrical insulation layer 41-2 that is laminated onto the pressing portion 62-2. In particular, the resistive heating layer 42 is laminated onto the first electrical insulation layer 41 in a single-line shape, and the line moves back and forth in the vertical direction while leaving a gap in the left-right direction. The resistive heating layer 42 is made of a conductive material. Examples of materials that can be used to form the resistive heating layer 42 include metallic materials (such as SUS) and non-metallic materials (such as silicon carbide). The resistive heating layer 42 can also be made of a conductive paste material. An example of such a material is a material in which the main component including silver is mixed with a resistance modifier. When an electric current is applied to the resistive heating layer 42, Joule heat corresponding to the resistance is emitted. The resistive heating layer 42 is laminated using a vapor deposition process or a printing process.

[0098] Here, as Figure 9 shown, the resistive heating layer 42-1 forms an open circuit having a first end portion 46-1 and a second end portion 47-1 as its two ends. The resistive heating layer 42-2 also forms an open circuit having a first end portion 46-2 and a second end portion 47-2 as its two ends. The first end portion 46 (46-1 and 46-2) is disposed within the first electrical insulation layer 41. In particular, the first end portion 46 is disposed in the lower end portion of the first electrical insulation layer 41. At the same time, the second end portion 47 (47-1 and 47-2) is disposed to protrude from the first electrical insulation layer 41. In particular, the second end portion 47 protrudes from the first electrical insulation layer 41, further protrudes from the pressing portion 62, and is disposed in the non-pressing portion 66.

[0099] In Figure 9 manufacturing step S14, the second electrical insulation layer 43 (43-1 and 43-2) is laminated onto the outer side of the pressing portion 62 of the partially manufactured heating system 30 that has undergone manufacturing step S13. Specifically, the second electrical insulation layer 43-1 is laminated onto the outside of the first electrical insulation layer 41-1 and the resistive heating layer 42-2 that are laminated onto the pressing portion 62-1, and the second electrical insulation layer 43-2 is laminated onto the outside of the first electrical insulation layer 41-2 and the resistive heating layer 42-2 that are laminated onto the pressing portion 62-2. Similar to the first electrical insulation layer 41, the second electrical insulation layer 43 is made of an electrical insulation material. The second electrical insulation layer 43 is laminated using a vapor deposition process or a printing process.

[0100] Further, in manufacturing step S14, wire 48-1 is connected to resistance heating layer 42-1, and wire 48-2 is connected to resistance heating layer 42-2. Specifically, wire 48-1 is connected to the first end portion 46-1 of resistance heating layer 42-1, and wire 48-2 is connected to the first end portion 46-2 of resistance heating layer 42-2. Wires 48 (48-1 and 48-2) are connected to power supply unit 111. As an example, the first end portion 46-1 of resistance heating layer 42-1 is connected to the negative electrode of power supply unit portion 111 via wire 48-1. Meanwhile, the first end portion 46-2 of resistance heating layer 42-2 is connected to power supply unit 111 via wire 48-2. Power supply unit 111 then supplies power to resistance heating layer 42 on the basis of the control of control unit 116, so that resistance heating layer 42 generates heat.

[0101] Here, accommodation portion 50 is made of a conductive material. An example of a material that can be used to form accommodation portion 50 is SUS.

[0102] The second end portion 47-1 of resistance heating layer 42-1 protrudes from first electrical insulation layer 41-1 and is connected to accommodation portion 50, and is electrically connected to power supply unit 111 via accommodation portion 50. Similarly, the second end portion 47-2 of resistance heating layer 42-2 protrudes from first electrical insulation layer 41-2 and is connected to accommodation portion 50, and is electrically connected to power supply unit 111 via accommodation portion 50. More specifically, the second end portion 47-1 of resistance heating layer 42-1 and the second end portion 47-2 of resistance heating layer 42-2 adjacent to resistance heating layer 42-1 are electrically connected via accommodation portion 50. Then, the first end portion 46-1 of resistance heating layer 42-1 is electrically connected to power supply unit 111 via wire 48-1, and the first end portion 46-2 of resistance heating layer 42-2 is electrically connected to power supply unit 111 via wire 48-2. With the above configuration, wire 48-1, resistance heating layer 42-1, accommodation portion 50, resistance heating layer 42-2, and wire 48-2 form a series circuit connected to power supply unit 111. When power supply unit 111 supplies power to this series circuit, heat can be generated in resistance heating layer 42-1 and resistance heating layer 42-2.

[0103] The above-mentioned first electrical insulation layer 41-1, resistance heating layer 42-1, and second electrical insulation layer 43-1 constitute the heating unit 40-1. Further, the first electrical insulation layer 41-2, resistance heating layer 42-2, and second electrical insulation layer 43-2 constitute the heating unit 40-2. Here, each component constituting the heating unit 40 (40-1 and 40-2) is laminated using a printing process or a vapor deposition process. Therefore, defects such as misalignment and peeling of the heating unit 40 can be prevented, and thus, compared with other manufacturing methods (such as a method of independently manufacturing the heating unit 40 and combining it with the accommodating portion 50), the manufacturing accuracy of the heating system 30 can be improved. As a result, the heating efficiency of the rod-shaped substrate 150 can be improved, thereby improving the quality of the user experience.

[0104] Supplementary information regarding the characteristics of the heating unit 40 will now be provided.

[0105] Referring again to manufacturing steps S12 to S14, the first electrical insulation layer 41-1 is laminated inside the resistance heating layer 42-1, and the second electrical insulation layer 43-1 is laminated outside the resistance heating layer 42-1. In addition, at least a portion of the resistance heating layer 42-1 is sandwiched between the first electrical insulation layer 41-1 and the resistance heating layer 42-2. With this configuration, a short circuit can be prevented from occurring in the resistance heating layer 42-1 via components on the inner side of the heating unit 40 (e.g., the accommodating portion 50) or components on the outer side of the heating unit 40 (e.g., the external heat diffusion layer g1 discussed below). The same applies to the first electrical insulation layer 41-2, resistance heating layer 42-2, and second electrical insulation layer 43-2.

[0106] Referring again to manufacturing step S13, the resistance heating layer 42-1 and the resistance heating layer 42-2 are laminated on the outer sides of the pressing portions 62-1 and 62-2 adjacent to and on both sides of the non-pressing portion 66-1 in a state where they are separated from each other at the non-pressing portion 66-1. With this configuration, the resistance heating layer 42 can be provided on the flat surface of the pressing portion 62. Therefore, defects such as misalignment and peeling can be prevented, and thus, compared with the case where the resistance heating layer 42 is provided on the curved surface of the non-pressing portion 66, the manufacturing accuracy of the heating system 30 can be improved. As a result, the heating efficiency of the rod-shaped substrate 150 can be improved, thereby improving the quality of the user experience.

[0107] Referring again to manufacturing step S13, the second end portion 47-1 of the resistive heating layer 42-1 that protrudes from the first electrical insulating layer 41-1 protrudes from the pressing portion 62-1 and is connected to the non-pressing portion 66-1. At the same time, the second end portion 47-2 of the resistive heating layer 42-2 that protrudes from the first electrical insulating layer 41-2 protrudes from the pressing portion 62-2 and is connected to the non-pressing portion 66-1. That is, the second end portion 47-1 of the resistive heating layer 42-1 and the second end portion 47-2 of the resistive heating layer 42-2 are arranged to protrude from the left and right ends of the non-pressing portion 66-1 in directions approaching each other. With this configuration, the distance between the second end portion 47-1 of the resistive heating layer 42-1 and the second end portion 47-2 of the resistive heating layer 42-2 can be minimized. As a result, the electrical conduction between the resistive heating layer 42-1 and the resistive heating layer 42-2 can be promoted.

[0108] Referring again to manufacturing step S13, the resistive heating layer 42 laminated in the heat generation region 44 is configured to be thin. This allows the resistance of the resistive heating layer 42 laminated in the heat generation region 44 to increase, so as to generate high Joule heat when electricity is applied. At the same time, the resistive heating layer 42 laminated in the non-heat generation region 45 of the heating unit 40 is configured to be wider than the resistive heating layer 42 laminated in the heat generation region 44. This allows the resistance of the resistive heating layer 42 laminated in the non-heat generation region 45 to decrease, such that no Joule heat is generated or only a very small amount of Joule heat is generated when electricity is applied.

[0109] Referring again to manufacturing step S14, the first end portion 46 to which the wire 48 is connected is arranged in the resistive heating layer 42 in the non-heat generation region 45, and these resistive heating layers are configured to be wider than the resistive heating layer 42 in the heat generation region 44. This makes it possible to prevent heat from being transferred to the wire 48 and to prevent the connection portion between the wire 48 and the resistive heating layer 42 from being damaged by heat.

[0110] Referring again to manufacturing step S14, the wire 48 is connected only to one of the two ends of each resistive heating layer 42. With this configuration, the number of wires 48 can be reduced compared to the case where the wire 48 is connected to both ends of the resistive heating layer 42. This makes it possible to suppress the occurrence of a poor connection between the wire 48 and the resistive heating layer 42, thereby improving the quality of the user experience.

[0111] The resistive heating layer 42 is provided at a position corresponding to the matrix portion 151 of the rod-shaped matrix 150 accommodated in the accommodation portion 50, and the aerosol source is distributed in this matrix portion. Specifically, in a state where the rod-shaped matrix 150 is accommodated in the accommodation portion 50, as Figure 7As shown, the heat generation area 44 laminated with the resistive heating layer 42 is disposed at a position corresponding to the substrate portion 151 within the pressing portion 62. With this configuration, the heating efficiency of the rod-shaped substrate 150 can be improved.

[0112] It is desirable that the portion laminated with the first electrical insulating layer 41 on the outer periphery of the accommodation portion 50 occupies less than 50% of the outer periphery of the accommodation portion 50. More simply, it is desirable that the pressing portion 62 occupies less than 50% of the outer periphery of the accommodation portion 50. With this configuration, the area of the heat generation area 44 can be reduced to increase the watt density. As a result, the heating efficiency of the rod-shaped substrate 150 can be improved.

[0113] The control unit 116 can control the temperature to which the rod-shaped substrate 150 is heated by estimating and controlling the temperature of the resistive heating layer 42 based on the resistance value of the resistive heating layer 42. The resistance value of the resistive heating layer 42 is measured based on the amount of voltage drop between the wire 48-1 and the wire 48-2. In the present embodiment, since the resistive heating layer 42-1 and the resistive heating layer 42-2 are electrically connected via the accommodation portion 50, it is considered that the temperature of the resistive heating layer 42 can be estimated as a temperature close to the temperature of the accommodation portion 50. Considering the fact that the rod-shaped substrate 150 is directly heated by the accommodation portion 50, this configuration enables the temperature control of the rod-shaped substrate 150 to be more appropriately implemented, thereby improving the quality of the user experience.

[0114] Supplementary information regarding the characteristics of the heating unit 40 has been provided above. Subsequently, the Figure 10 subsequent manufacturing steps will be described.

[0115] In Figure 10 manufacturing step S15, the external heat diffusion layer 90 is laminated onto the outer side of the partially manufactured heating system 30 that has undergone manufacturing step S14. Specifically, the external heat diffusion layer 90 is wound around and laminated onto the outer side of the side wall 54 of the accommodation portion 50 outside the heating unit 40. The external heat diffusion layer 90 is an example of a second heat diffusion layer that diffuses the heat of the heating unit 40 on the outer side of the heating unit 40. With this configuration, the heat of the heating unit 40 laminated onto the pressing portion 62 can be diffused throughout the entire accommodation portion 50 including the non-pressing portion 66. As a result, the rod-shaped substrate 150 accommodated in the accommodation portion 50 can be effectively heated. The configuration of the external heat diffusion layer 90 will be described with reference to Figure 11 FIG.

[0116] Figure 11 is a diagram showing Figure 10 the configuration of the external heat diffusion layer 90 shown in Figure 11 FIG. As shown in

[0117] The graphite sheet 91 is a sheet-like member made of graphite. The thermal conductivity of the graphite sheet 91 is at least higher than that of the accommodation portion 50. With this configuration, the graphite sheet 91 can effectively diffuse the heat of the heating unit 40. It should be noted that, for example, a sheet-like member made of silicon or acrylic can be used instead of the graphite sheet 91.

[0118] The vertical long PI tape 92 and the horizontal long PI tape 93 are formed by applying an adhesive to one surface of a film-like member made of PI (polyimide). The tensile strength of the vertical long PI tape 92 and the horizontal long PI tape 93 is higher than that of the graphite sheet 91. Therefore, the vertical long PI tape 92 and the horizontal long PI tape 93 can prevent the graphite sheet 91 from being torn while fixing the graphite sheet 91 around the periphery of the accommodation portion 50.

[0119] The external heat diffusion layer 90 is formed by bonding the graphite sheet 91 as the lowermost layer, the vertical long PI tape 92 as the intermediate layer, and the horizontal long PI tape 93 as the uppermost layer in an overlapping state. The vertical long PI tape 92 and the horizontal long PI tape 93 overlap with their bonding surfaces facing the lowermost layer. Here, it should be noted that the layer on the inner side when the external heat diffusion layer 90 is wound around the accommodation portion 50 is defined as the lowermost layer, and the layer on the outer side is defined as the uppermost layer. Then, in Figure 10 the manufacturing step S15 shown, the external heat diffusion layer 90 is wound and arranged to cover the outer side of the heating unit 40 provided on the outer side of the accommodation portion 50, with the graphite sheet 91 on the inner side and the horizontal long PI tape 93 on the outer side. With this configuration, the graphite sheet 91 can be in close contact with the heating unit 40 or the accommodation portion 50. As a result, the effect of heat diffusion from the heating unit 40 via the graphite sheet 91 to the accommodation portion 50 can be improved. In addition, with this configuration, the graphite sheet 91 in close contact with the heating unit 40 or the accommodation portion 50 can be protected from external influences by the horizontal long PI tape 93. As a result, the effect of the horizontal long PI tape 93 can be improved, thereby preventing the graphite sheet 91 from being torn.

[0120] Here, it is desirable that the graphite sheet 91 is laminated so as to overlap with the heat generation region 44 of the heating unit 40. With this configuration, the heat from the heating unit 40 can be effectively diffused. At the same time, it is desirable that the graphite sheet 91 is laminated so as to avoid the non-heat generation region 45 of the heating unit 40. With this configuration, heat transfer to the wire 48 can be prevented, and the connection portion between the wire 48 and the resistance heating layer 42 can be prevented from being damaged by heat.

[0121] The graphite sheet 91 is formed to be longer in the left - right direction than the outer periphery of the accommodation portion 50 (especially the holding portion 60). As a result, the graphite sheet 91 is wound around the outer surface of the accommodation portion 50 once or multiple times. With this configuration, the graphite sheet 91 completely covers the outer periphery of the accommodation portion 50, allowing the heat of the heating unit 40 to spread throughout the entire accommodation portion 50.

[0122] As Figure 11 shown, the vertically long PI tape 92 is formed to be longer in the up - down direction than the graphite sheet 91, and is positioned such that both ends in the up - down direction protrude from the graphite sheet 91. Then, referring again to Figure 10 the manufacturing step S15, these protruding portions 95 - 1 and 95 - 2 are directly bonded to the non - pressing portion 66 where the heating unit 40 is not provided. With this configuration, the external heat diffusion layer 90 can be firmly fixed to the accommodation portion 50 to prevent misalignment of the external heat diffusion layer 90. Compared with the case where the vertically long PI tape 92 is bonded to the heating unit 40 on the pressing portion 62, the load on the heating unit 40 can also be reduced when winding the external heat diffusion layer 90 and damage to the heating unit 40 can be prevented.

[0123] As Figure 11 shown, the horizontally long PI tape 93 is formed to be longer in the left - right direction than the graphite sheet 91, and is positioned such that its right - end portion protrudes from the graphite sheet 91. Then, referring again to Figure 10 the manufacturing step S15, this protruding portion 94 is bonded to the horizontally long PI tape 93 that is wound once inside the protruding portion 94. With this configuration, the position of the graphite sheet 91 can be firmly fixed by means of the horizontally long PI tape 93. As a result, the situation where unnecessary force is applied to the graphite sheet 91, causing the graphite sheet 91 to break, can be prevented.

[0124] Next, in Figure 10In manufacturing step S16, the heat insulation portion 70 is laminated onto the outer side of the partially manufactured heating system 30 that has undergone manufacturing step S15. Specifically, the heat insulation portion 70 is wound around and laminated onto the outer side of the side wall 54 of the accommodation portion 50 outside the heating unit 40 and the external heat diffusion layer 90. The heat insulation portion 70 is an example of a heat insulation layer that blocks the heat of the heating unit 40. With this configuration, the heat of the heating unit 40 can be prevented from diffusing to the outside. As a result, defects such as electronic circuit failures caused by high temperatures can be prevented from occurring. Here, the heat insulation portion 70 is laminated so as to cover a part of the side wall 54 of the accommodation portion 50 in the vertical direction in the vertical direction. It is desirable that the heat insulation portion 70 completely covers the heat generation area 44 of the heating unit 40 and the external heat diffusion layer 90. At the same time, the end portions of the heat insulation portion 70 in the vertical direction and the portions of the side wall 54 of the accommodation portion 50 exposed from the heat insulation portion 70 are sealed by means of a sealing member 73. The sealing member 73 is made of a material (such as silicon) having a prescribed heat resistance. With this configuration, the heat insulation effect of the heat insulation portion 70 can be improved. Reference will be made to Figure 12 describe the configuration of the heat insulation portion 70.

[0125] Figure 12 shows Figure 10 the accompanying drawing showing the configuration of the heat insulation portion 70 shown. As Figure 12 shown, the heat insulation portion 70 is configured by laminating a heat insulation sheet 71 and PI tapes 72 (72-1 and 72-2). The heat insulation sheet 71 is a member that blocks heat. For example, the heat insulation sheet 71 is made of a glass material, a vacuum heat insulation material, an aerogel heat insulation material, etc. The PI tape 72 is a tape made of PI. The PI tape 72 is formed by applying an adhesive to one surface of a film-like member made of PI. Then, in Figure 10 manufacturing step S16 shown, the heat insulation portion 70 is wound and arranged to cover the outside of the external heat diffusion layer 90 provided on the outer side of the accommodation portion 50, with the heat insulation sheet 71 on the inner side and the PI tape 72 on the outer side, and with the adhesive surface of the PI tape 72 facing inward. With this configuration, the heat insulation sheet 71 can be in close contact with the external heat diffusion layer 90. As a result, the heat insulation effect of the heat insulation sheet 71 can be improved.

[0126] The heat insulating sheet 71 is formed to be longer than the graphite sheet 91 in the vertical direction and is positioned such that the end portions of the heat insulating sheet 71 in the vertical direction protrude beyond the graphite sheet 91. With this configuration, the heat insulating sheet 71 can completely cover the graphite sheet 91 in the vertical direction. In addition, the heat insulating sheet 71 is formed to be longer than the outer periphery of the accommodating portion 50 (particularly the holding portion 60) in the left-right direction. As a result, the heat insulating sheet 71 is wound around the outer surface of the accommodating portion 50 one or more times. With this configuration, the outer periphery of the accommodating portion 50 can be completely covered by the heat insulating sheet 71. This makes it possible to prevent the heat diffused by the external heat diffusion layer 90 from the heating unit 40 from diffusing more outward than the heat insulating portion 70.

[0127] The PI tape 72-1 is located on the left end portion of the heat insulating sheet 71 such that approximately half of the PI tape 72-1 protrudes leftward from the heat insulating sheet 71. Then, the PI tape 72-1 is bonded to the external heat diffusion layer 90 (e.g., the horizontally long PI tape 93) wound around the holding portion 60. With this configuration, the position of the heat insulating portion 70 can be fixed to prevent misalignment of the heat insulating portion 70.

[0128] The PI tape 72-2 is positioned on the right end portion of the heat insulating sheet 71 such that approximately half of the PI tape 72-1 protrudes rightward from the heat insulating sheet 71. Then, the protruding portion of the PI tape 72-2 is bonded to the heat insulating portion 70 (e.g., the heat insulating sheet 71) wound once inside the protruding portion. With this configuration, the position of the heat insulating portion 70 can be fixed to prevent misalignment of the heat insulating portion 70.

[0129] In Figure 10 manufacturing step S17, the heat shrinkable tube 99 is laminated on the outside of the partially manufactured heating system 30 that has undergone manufacturing step S16. The heat shrinkable tube 99 is a tubular member that shrinks when heat is applied. For example, the heat shrinkable tube 99 is made of a resin material. The heat shrinkable tube 99 is positioned to completely cover the partially manufactured heating system 30 that has undergone manufacturing step S16 and shrinks when heated in this state, thereby fixing each laminated component to the outside of the accommodating portion 50. With this configuration, displacement of the position of each component laminated on the outside of the accommodating portion 50 can be prevented.

[0130] The manufacturing steps and the configuration of the heating system 30 have been described above.

[0131] <3. Modification example>

[0132] (1) First modification example

[0133] In the above-described embodiments, an example in which the second end portion 47 of the resistive heating layer 42 is connected to the non-pressing portion 66 is described, but the present disclosure is not limited to such an example. The second end portion 47 of the resistive heating layer 42 may be connected to the pressing portion 62. A modified example of this will be described with reference to Figure 13 a description of such a modified example.

[0134] Figure 13 FIG. is a diagram showing an example of steps for manufacturing the heating system 30 according to this modified example. The steps for manufacturing the heating system 30 according to this modified example sequentially pass through Figure 13 the manufacturing steps S21 to S24 shown and then pass through Figure 10 the manufacturing steps S15 to S17 shown. That is, the steps for manufacturing the heating system 30 according to this modified example include the manufacturing steps S21 to S24, rather than Figure 9 the manufacturing steps S11 to S14. Hereinafter, the differences from the manufacturing steps S11 to S14 will be mainly described, and the description of similar points will be omitted.

[0135] Figure 13 The manufacturing step S21 of Figure 9 is the same as the manufacturing step S11 of

[0136] In Figure 13 the manufacturing step S22 of

[0137] Figure 13 the first electrical insulating layer 41 is laminated onto the pressing portion 62. However, in this modified example, a cutout 49-1 is provided in the lower portion of the first electrical insulating layer 41-1, thereby exposing a part of the pressing portion 62-1. Similarly, a cutout 49-2 is provided in the lower portion of the first electrical insulating layer 41-2, thereby exposing a part of the pressing portion 62-2. In the manufacturing step S23 of the resistive heating layer 42 is laminated onto the outer side of the first electrical insulating layer 41 that has been laminated onto the pressing portion 62 of the partially manufactured heating system 30 that has undergone the manufacturing step S22. However, in this modified example, the second end portion 47-1 of the resistive heating layer 42-1 that protrudes from the first electrical insulating layer 41-1 is connected to the pressing portion 62-1 exposed in the cutout 49-1 of the first electrical insulating layer 41-1. Similarly, the second end portion 47-2 of the resistive heating layer 42-2 that protrudes from the first electrical insulating layer 41-2 is connected to the pressing portion 62-2 exposed in the cutout 49-2 of the first electrical insulating layer 41-1. With this configuration, the resistive heating layer 42 can be laminated only onto the outer side of the flat pressing portion 62. Therefore, compared with the case where the second end portion 47 of the resistive heating layer 42 is connected to the curved non-pressing portion 66, the occurrence of defects such as misalignment and peeling of the resistive heating layer 42 can be more effectively prevented.

[0138] In Figure 13 manufacturing step S24, the second electrical insulation layer 43 is laminated onto the outer sides of the first electrical insulation layer 41 and the resistive heating layer 42 that are laminated onto the pressing portion 62 of the partially manufactured heating system 30 that has undergone manufacturing step S23. However, in this modified example, in the same manner as in the first electrical insulation layer 41-1, notches 49-1 are also provided in the lower portion of the second electrical insulation layer 43-1. Similarly, in the same manner as in the first electrical insulation layer 41-2, notches 49-2 are also provided in the lower portion of the second electrical insulation layer 43-2.

[0139] Furthermore, in manufacturing step S24, a wire 48-1 is connected to the resistive heating layer 42-1, and a wire 48-2 is connected to the resistive heating layer 42-2.

[0140] (2) Second modified example

[0141] The first electrical insulation layer 41 and the second electrical insulation layer 43 can have any shape as long as their shapes are set to cover the resistive heating layer 42 in a manner that sandwiches the resistive heating layer from both sides. Hereinafter, as a second modified example, refer to Figure 14 another example of the shapes that the first electrical insulation layer 41 and the second electrical insulation layer 43 can take. Hereinafter, the second modified example is described as an example of a further modification of the first modified example.

[0142] Figure 14 is a diagram showing an example of the steps for manufacturing the heating system 30 according to this modified example. The steps for manufacturing the heating system 30 according to this modified example sequentially pass through Figure 14 the manufacturing steps S31 to S34 shown and then pass through Figure 10 the manufacturing steps S15 to S17 shown. That is, the steps for manufacturing the heating system 30 according to this modified example include manufacturing steps S31 to S34 instead of Figure 13 the manufacturing steps S21 to S24. Hereinafter, the differences from the manufacturing steps S21 to S24 will be mainly described, and the description of similar points will be omitted.

[0143] Figure 14 The manufacturing step S31 of Figure 9 is the same as the manufacturing step S11 of

[0144] In Figure 14In the manufacturing step S32, the first electrical insulation layer 41 is laminated onto the pressing portion 62. However, in this modified example, the first electrical insulation layer 41-1 has a shape conforming to the later-laminated resistive heating layer 42-1. That is, the first electrical insulation layer 41-1 is laminated onto the pressing portion 62-1 in a single-line shape, and the line moves back and forth in the vertical direction while leaving a gap in the horizontal direction. Similarly, the first electrical insulation layer 41-2 has a shape conforming to the later-laminated resistive heating layer 42-2. That is, the first electrical insulation layer 41-2 is laminated onto the pressing portion 62-2 in a single-line shape, and the line moves back and forth in the vertical direction while leaving a gap in the horizontal direction.

[0145] In Figure 14 the manufacturing step S33, in the same manner as in Figure 13 the manufacturing step S23, the resistive heating layer 42 is laminated onto the outer side of the first electrical insulation layer 41 that has been laminated onto the pressing portion 62 of the heating system 30 that has been partially manufactured through the manufacturing step S32.

[0146] In Figure 14 the manufacturing step S34, the second electrical insulation layer 43 is laminated onto the outer sides of the first electrical insulation layer 41 and the resistive heating layer 42 that have been laminated onto the pressing portion 62 of the heating system 30 that has been partially manufactured through the manufacturing step S33. However, in this modified example, the second electrical insulation layer 43-1 has a shape similar to that of the first electrical insulation layer 41-1. Similarly, the second electrical insulation layer 43-2 has a shape similar to that of the first electrical insulation layer 41-2.

[0147] Furthermore, in the manufacturing step S34, the wire 48-1 is connected to the resistive heating layer 42-1, and the wire 48-2 is connected to the resistive heating layer 42-2.

[0148] As described above, the first electrical insulation layer 41 and the second electrical insulation layer 43 according to this modified example are in a single-line shape, and the line moves back and forth in the vertical direction while leaving a gap in the horizontal direction. The later-laminated external heat diffusion layer 90 thus directly contacts the pressing portion 62 exposed in the horizontal-direction gap in the first electrical insulation layer 41 and the second electrical insulation layer 43. Therefore, the heat diffusion effect of the external heat diffusion layer 90 can also be manifested with respect to the pressing portion 62, thereby further improving the heating efficiency.

[0149] (3) Third modified example

[0150] Although an example in which the resistive heating layer 42-1 and the resistive heating layer 42-2 form a series circuit has been described above, this disclosure is not limited to such an example. The resistive heating layer 42-1 and the resistive heating layer 42-2 can form a parallel circuit. Reference will be made to Figure 15Describe an example of such a modification.

[0151] Figure 15 is a diagram showing an example of the steps for manufacturing the heating system 30 according to this modification example. The steps for manufacturing the heating system 30 according to this modification example are sequentially through Figure 15 the manufacturing steps S41 to S44 shown and then through Figure 10 the manufacturing steps S15 to S17 shown. That is, the steps for manufacturing the heating system 30 according to this modification example include the manufacturing steps S41 to S44, rather than Figure 9 the manufacturing steps S11 to S14. Hereinafter, the differences from the manufacturing steps S11 to S14 will be mainly described, and the description of the similar points will be omitted.

[0152] Figure 15 The manufacturing step S41 of Figure 9 is the same as the manufacturing step S11 of

[0153] Figure 15 The manufacturing step S42 of Figure 9 is the same as the manufacturing step S12 of

[0154] In Figure 15 the manufacturing step S43 of Figure 9 the resistance heating layers 42-1 and 42-2 are laminated in the same manner as in the manufacturing step S13 of

[0155] on the outside of the first electrical insulating layers 41-1 and 41-2 that are laminated on the pressing portion 62 of the partially manufactured heating system 30 that has undergone the manufacturing step S42.

[0156] In Figure 15 the manufacturing step S43 of Figure 9 the rectangular resistance heating layer 42-3 is laminated on the lower portion of the non-pressing portion 66-1. The resistance heating layer 42-3 is laminated in the non-heat generation area 45. That is, similar to the first end portion 46-1 of the resistance heating layer 42-1 and the first end portion 46-2 of the resistance heating layer 42-2, the resistance heating layer 42-3 is configured to be wide. This makes it possible to prevent heat generation in the resistance heating layer 42-3 and prevent heat transfer to the wire 48, and also prevent the connection portion between the wire 48 and the resistance heating layer 42 from being damaged by heat.

[0156] In Figure 15 the manufacturing step S44 of Figure 9 the second electrical insulating layer 43 is laminated in the same manner as in the manufacturing step S14 of

[0157] Further, in manufacturing step S44, in the same manner as in Figure 9 manufacturing step S14 of Figure 9 , wire 48-1 is connected to the resistive heating layer 42-1, and wire 48-2 is connected to the resistive heating layer 42-2. However, each of wire 48-1 and wire 48-2 is connected to the negative electrode of the power supply unit 111.

[0158] In addition, in this modified example, in manufacturing step S44, wire 48-3 is connected to the resistive heating layer 42-3. Wire 48-3 is connected to the positive electrode of the power supply unit 111. As a result, wire 48-3 connected to the power supply unit 111 is connected to the accommodation portion 50. Then, the second end portion 47-1 of the resistive heating layer 42-1 is electrically connected via the accommodation portion 50 to wire 48-3 (more precisely, to the resistive heating layer 42-3) connected to the accommodation portion 50. Thus, wire 48-1, the resistive heating layer 42-1, the accommodation portion 50, the resistive heating layer 42-3, and wire 48-3 form a first circuit connected to the power supply unit 111. At the same time, the second end portion 47-2 of the resistive heating layer 42-2 is electrically connected via the accommodation portion 50 to wire 48-3 (more precisely, to the resistive heating layer 42-3) connected to the accommodation portion 50. Thus, wire 48-2, the resistive heating layer 42-2, the accommodation portion 50, the resistive heating layer 42-3, and wire 48-3 form a second circuit connected to the power supply unit 111. The above-described first circuit and second circuit constitute a parallel circuit. When the power supply unit 111 supplies power to this parallel circuit, heat can be generated in the resistive heating layer 42-1 and the resistive heating layer 42-2.

[0159] (4) Fourth Modified Example

[0160] Although the example in which the resistive heating layer 42 is connected to the power supply unit 111 via the accommodation portion 50 has been described above, the present disclosure is not limited to such an example. The resistive heating layer 42 can be connected to the power supply unit 111 without passing through the accommodation portion 50. A modified example will be described with reference to Figure 16 the following.

[0161] Figure 16 is a diagram showing an example of the steps for manufacturing the heating system 30 according to this modified example. The steps for manufacturing the heating system 30 according to this modified example sequentially pass through Figure 16 the manufacturing steps S51 to S54 shown and then through Figure 10 the manufacturing steps S15 to S17 shown. That is, the steps for manufacturing the heating system 30 according to this modified example include manufacturing steps S51 to S54, rather than Figure 9Hereinafter, points different from the manufacturing steps S11 to S14 will be mainly described, and description of similar points will be omitted.

[0162] Figure 16 The manufacturing step S51 and Figure 9 The manufacturing step S11 is the same.

[0163] Figure 16 The manufacturing step S52 and Figure 9 The manufacturing step S12 is the same.

[0164] exist Figure 16 In the manufacturing step S53 of the present invention, the resistance heating layer 42 is laminated to the outer side of the first electrical insulating layer 41 laminated to the pressing portion 62 of the partially manufactured heating system 30 that has undergone the manufacturing step S52. However, in the present modified example, both the first end portion 46 and the second end portion 47, which are both ends of each of the resistance heating layers 42, are arranged inside the first electrical insulating layer 41. In particular, the first end portion 46 and the second end portion 47 are arranged on the lower end portion of the first electrical insulating layer 41.

[0165] exist Figure 16 In the manufacturing step S54, Figure 9 In the same manner as in manufacturing step S14, the second electrical insulating layer 43 is laminated onto the outer sides of the first electrical insulating layer 41 and the resistive heating layer 42 laminated onto the pressing portion 62 of the partially manufactured heating system 30 that has undergone manufacturing step S53.

[0166] Furthermore, in the present modified example, in the manufacturing step S54, the wire 48 connected to the power supply unit 111 is connected to each of the first end portion 46 and the second end portion 47 of the resistance heating layer 42. Specifically, the wire 48-1 connected to the positive electrode of the power supply unit 111 is connected to the first end portion 46-1 of the resistance heating layer 42-1. The wire 48-4 connected to the negative electrode of the power supply unit 111 is connected to the second end portion 47-1 of the resistance heating layer 42-1. Therefore, the wire 48-1, the resistance heating layer 42-1, and the wire 48-4 form a first circuit connected to the power supply unit 111. At the same time, the wire 48-2 connected to the negative electrode of the power supply unit 111 is connected to the first end portion 46-2 of the resistance heating layer 42-2. The wire 48-5 connected to the positive electrode of the power supply unit 111 is connected to the second end portion 47-2 of the resistance heating layer 42-2. Therefore, the wire 48-2, the resistance heating layer 42-2, and the wire 48-5 form a second circuit connected to the power supply unit 111. The first circuit and the second circuit constitute a parallel circuit. When the power supply unit 111 supplies power to the parallel circuit, heat can be generated in the resistance heating layer 42-1 and the resistance heating layer 42-2.

[0167] It should be noted that the operations of the first circuit and the second circuit constituting the parallel circuit can be controlled individually or jointly. That is, the first circuit and the second circuit can be supplied with different powers or the same power.

[0168] (5) Fifth modification example

[0169] In the above embodiment, an example in which the external heat diffusion layer 90 is laminated on the outer side of the heating unit 40 is described, but the present disclosure is not limited to such an example. The heat diffusion layer can be laminated on the inner side of the heating unit 40. Reference will be made to Figure 17 Describe such a modification example.

[0170] Figure 17 is a diagram showing an example of the steps for manufacturing the heating system 30 according to this modification example. The steps for manufacturing the heating system 30 according to this modification example sequentially pass through Figure 17 the manufacturing steps S61 and S62 shown, and then through Figure 9 the manufacturing steps S12 to S14 shown and then through Figure 10 the manufacturing steps S15 to S17 shown. That is, the steps for manufacturing the heating system 30 according to this modification example include the manufacturing steps S61 and S62, rather than Figure 9 the manufacturing step S11. Figure 17 The manufacturing step S65 shown shows the state of the partially manufactured heating system 30 that has undergone the manufacturing steps S61, S62, and S12 to S14. Hereinafter, the differences from Figure 9 and Figure 10 the manufacturing steps S11 to S17 shown will be mainly described, and the description of the similar points will be omitted.

[0171] Figure 17 The manufacturing step S61 of Figure 9 is the same as the manufacturing step S11 of

[0172] In Figure 17In manufacturing step S62, the internal heat diffusion layer 96 is laminated onto the outer side of the side wall 54 of the accommodation portion 50 using an electroplating process. The internal heat diffusion layer 96 is an example of a first heat diffusion layer that is laminated onto the outer side of the side wall 54 of the accommodation portion 50 inside the heating unit 40 and causes the heat of the heating unit 40 to diffuse inside the heating unit 40. The electroplating process is a process in which the surface of an object is thinly coated with metal. The internal heat diffusion layer 96 is made of a material that can be electroplated and has a higher thermal conductivity than the material constituting the accommodation portion 50. In addition, it is desirable that the internal heat diffusion layer 96 be made of a material with a higher thermal conductivity than the material constituting the accommodation portion 50. An example of a material that can constitute the internal heat diffusion layer 96 is silver. With this configuration, the heat of the heating unit 40 laminated onto the pressing portion 62 later can diffuse throughout the entire accommodation portion 50 including the non-pressing portion 66. As a result, the rod-shaped substrate 150 accommodated in the accommodation portion 50 can be effectively heated. It should be noted that, in addition to the electroplating process, the internal heat diffusion layer 96 can be laminated in any manner, such as a thermal spraying process in which metal particles are sprayed to form a coating or a process in which a paste material is applied and fired. Additionally, the internal heat diffusion layer 96 can be electroplated with nickel or gold, for example. This makes it possible to prevent deterioration of the internal heat diffusion layer 96, such as oxidation.

[0173] Here, it is desirable that the internal heat diffusion layer 96 be laminated so as to overlap with the region where the heat generation region 44 of the heating unit 40 is provided. With this configuration, the heat from the heating unit 40 can be effectively diffused. At the same time, it is desirable that the internal heat diffusion layer 96 be laminated so as to avoid the region where the non-heat generation region 45 of the heating unit 40 is provided. With this configuration, heat transfer to the wire 48 can be prevented, and damage to the connection portion between the wire 48 and the resistance heating layer 42 due to heat can be prevented.

[0174] Thereafter, perform Figure 9 manufacturing steps S12 to S14 to manufacture Figure 17The partially manufactured heating system 30 shown in manufacturing step S63. That is, the first electrical insulation layer 41, the resistive heating layer 42, and the second electrical insulation layer 43 are each laminated in an outward order using a printing process or a vapor deposition process further outward than the internal heat diffusion layer 96 laminated on the outer side of the pressing portion 62. Here, if the electrical conductivity of the internal heat diffusion layer 96 is higher than that of the accommodating portion 50, it is desirable that the second end portion 47 of the resistive heating layer 42 be connected to the internal heat diffusion layer 96, as shown in manufacturing step S63. In this case, the second end portion 47 may be connected to the internal heat diffusion layer 96 on the pressing portion 62 or may be connected to the internal heat diffusion layer 96 on the non-pressing portion 66. This configuration enables the promotion of electric power conduction between the resistive heating layer 42-1 and the resistive heating layer 42-2. Of course, this modification example may be combined with the third modification example, and the wire 48 connected to the power supply unit 111 may be connected to the accommodating portion 50. In this case, the resistive heating layer 42 is connected to the power supply unit 111 via the internal heat diffusion layer 96 and the accommodating portion 50.

[0175] Alternatively, the second end portion 47 of the resistive heating layer 42 may be connected to the accommodating portion 50 exposed from the internal heat diffusion layer 96, thus avoiding the internal heat diffusion layer 96. For example, the accommodating portion 50 and the resistive heating layer 42 may be made of the same SUS and electrically connected by welding. With this configuration, a reduction in durability due to intermetallic corrosion or solid solution can be prevented.

[0176] (6) Sixth modification example

[0177] Although an example in which the accommodating portion 50 is a tubular body in a cylindrical shape has been described above, the present disclosure is not limited to such an example. The accommodating portion 50 may have any shape as long as the shape has a pressing portion 62 that is a flat plate. A modification example will be described with reference to Figure 18 Describe such a modification example.

[0178] Figure 18 is a diagram schematically showing an example of the configuration of the accommodating portion 50 and the rod-shaped substrate 150 according to this modification example. As Figure 18As shown, the accommodating portion 50 may be a rectangular tube with a bottom, and the shape of the surface perpendicular to the up-and-down direction is rectangular. In this modified example, not only the pressing portion 62 but also the non-pressing portion 66 are configured as flat plates. That is, the accommodating portion 50 according to this modified example is configured by connecting the bottom wall 56 to the lower end of the side wall 54, and the side wall is configured by alternately connecting a pair of pressing portions 62 that are flat plates and a pair of non-pressing portions 66 that are flat plates. However, it is desirable that the length of the non-pressing portion 66 in the peripheral direction of the accommodating portion 50 be configured to be less than the length of the pressing portion 62. That is, it is desirable that the accommodating portion 50 be configured such that its shape in a plane perpendicular to the up-and-down direction is rectangular, where the pressing portion 62 constitutes the long side and the non-pressing portion 66 constitutes the short side. In addition, it is desirable that the heating unit 40 be provided on the pressing portion 62.

[0179] As Figure 18 shown, the rod-shaped substrate 150 may be configured as a prism with a rectangular cross-sectional shape to match the shape of the accommodating portion 50. For example, the rod-shaped substrate 150 may be configured in the form of a thin card.

[0180] With this configuration, the thinly configured rod-shaped substrate 150 can be heated while being sandwiched between the heating units 40, so the temperature can easily rise up to the central portion of the rod-shaped substrate 150.

[0181] (7) Seventh Modified Example

[0182] Although the example in which the resistance heating layer 42 protrudes from the first insulating layer 41 in the direction along the outer peripheral surface of the accommodating portion 50 has been described above, the present disclosure is not limited to such an example. For example, the resistance heating layer 42 may protrude from the first insulating layer 41 in a direction perpendicular to the outer peripheral surface of the accommodating portion 50. A modified example will be described with reference to Figure 19 this.

[0183] Figure 19 FIG. is a diagram showing an example of the steps for manufacturing the heating system 30 according to this modified example. The steps for manufacturing the heating system 30 according to this modified example sequentially pass through Figure 19 the manufacturing steps S71 to S74 shown and then pass through Figure 10 the manufacturing steps S15 to S17 shown. That is, the steps for manufacturing the heating system 30 according to this modified example include the manufacturing steps S71 to S74, rather than Figure 9Manufacturing steps S11 to S14. Hereinafter, the differences from manufacturing steps S11 to S14 will be mainly described, and the description of similar points will be omitted. In addition, although the manufacturing steps related to one of the two heating units 40 will be mainly described below, the same manufacturing steps can also be used to manufacture the other heating unit 40.

[0184] In Figure 19 In manufacturing step S71 of , the first electrical insulation layer 41 is machined by a via hole machine to form a through hole 41a. The first electrical insulation layer 41 according to this modified example may be a ceramic base material before sintering, such as a green sheet. Then, the through hole 41a in the first electrical insulation layer 41 is filled with a conductive material 42a. The conductive material 42a is made of any conductive material. The material of the conductive material 42a may be the same as the material of the resistive heating layer 42.

[0185] In Figure 19 In manufacturing step S72 of , the resistive heating layer 42 is laminated onto the first electrical insulation layer 41 that has undergone manufacturing step S71. Here, the second end portion 47 of the resistive heating layer 42 is disposed on the through hole 41a. Thus, the second end portion 47 of the resistive heating layer 42 is connected to the conductive material 42a that has filled the through hole 41a.

[0186] In Figure 19 In manufacturing step S73 of , the second electrical insulation layer 43 is laminated onto the first electrical insulation layer 41 and the resistive heating layer 42 that have undergone manufacturing step S72. For example, the second electrical insulation layer 43 is bonded to the first electrical insulation layer 41 so as to sandwich the resistive heating layer 42 in a state where the first end portion 46 of the resistive heating layer 42 is exposed. The second electrical insulation layer 43 according to this modified example may be a ceramic base material before sintering, such as a green sheet.

[0187] The heating unit 40 according to this modified example is manufactured by means of the above manufacturing steps.

[0188] In Figure 19 In manufacturing step S74 of , the heating unit 40 that has undergone manufacturing step S73 is laminated onto the outer side of the pressing portion 62 of the accommodating portion 50. For example, the heating unit 40 is attached to the outer side of the pressing portion 62 of the accommodating portion 50 and then fired. Thus, the second end portion 47 of the resistive heating layer 42 is connected to the accommodating portion 50 via the conductive material 42a provided in the through hole 41a. At the same time, the wire 48 is connected to the first end portion 46 of the resistive heating layer 42.

[0189] The steps for manufacturing the heating system 30 according to this modified example have been described above.

[0190] According to this modification example, in the same manner as in the above embodiments, the resistance heating layer 42 is electrically connected to the power supply unit 111 via the accommodation portion 50. The conductive material 42a disposed in the through-hole 41a can also be considered as part of the resistance heating layer 42. That is to say, the resistance heating layer 42 can protrude from the first electrical insulating layer 41 in the direction penetrating the first electrical insulating layer 41 and is connected to the accommodation portion 50. The through-hole 41a in this modification example corresponds to the cutout 49 in the above embodiments because the through-hole is configured to expose the pressing portion 62 formed in the first electrical insulating layer 41.

[0191] It should be noted that although an example has been described in which the heating unit 40 is independently manufactured and then attached to the outer side of the accommodation portion 50, the present disclosure is not limited to such an example. In the same manner as in the above embodiments, the first electrical insulating layer 41, the resistance heating layer 42, and the second electrical insulating layer 43 can be sequentially laminated on the accommodation portion 50. Figure 19 In the same manner as in the above embodiments, the first electrical insulating layer 41, the resistance heating layer 42, and the second electrical insulating layer 43 can be sequentially laminated on the accommodation portion 50.

[0192] <4. Supplementary Information>

[0193] Although the preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, the present disclosure is not limited to such examples. Obviously, various modification examples or variations within the scope of the technical concept set forth in the claims can be conceived by those of ordinary skill in the technical field to which the present disclosure pertains, and these modification examples and variations will naturally be understood to fall within the technical scope of the present disclosure.

[0194] Various methods can be conceived to manufacture the accommodation portion 50 in the form of a tubular body. As an example, the accommodation portion 50 in the form of a tubular body can be formed by subjecting a sheet to a stretching process. As another example, the accommodation portion 50 in the form of a tubular body can be formed by bending a sheet and welding joints. In the latter case, the heating unit 40 can be laminated on the sheet. Then, the accommodation portion 50 with the heating unit 40 laminated thereon can be formed by bending the sheet with the heating unit 40 laminated thereon and welding the joints.

[0195] Although an example has been described above in which the holding portion 60 has two pressing portions 62 and two non-pressing portions 66, the present disclosure is not limited to such an example. For example, the holding portion 60 can have three or more pressing portions 62 and three or more non-pressing portions 66.

[0196] Although examples of laminating each of the first electrical insulating layer 41, the resistive heating layer 42, and the second electrical insulating layer 43 that constitute the heating unit 40 using a printing process or a vapor deposition process have been described above, the present disclosure is not limited to such examples. As an example, the first electrical insulating layer 41 and the second electrical insulating layer 43 may be laminated by applying or transferring a paste material. As another example, the resistive heating layer 42 may include a metal foil processed into a predetermined shape and may be placed on the first electrical insulating layer 41. If the resistive heating layer 42 includes a metal foil, the metal foil may be placed on a carrier tape, and the first electrical insulating layer 41 may be printed thereon, and then the resulting printed material may be jointly transferred to the receiving portion 50. If the resistive heating layer 42 includes a metal foil, the resistive heating layer 42 and the receiving portion 50 may be electrically connected by welding. Alternatively, for example, the heating unit 40 may be independently manufactured and attached to the outer side of the receiving portion 50.

[0197] Although an example in which the connection portion between the resistive heating layer 42 and the wire 48 is exposed and not covered by the second electrical insulating layer 43 has been described above, the present disclosure is not limited to such an example. The connection portion between the resistive heating layer 42 and the wire 48 may be covered by the second electrical insulating layer 43.

[0198] Although an example in which the resistive heating layer 42 and the wire 48 are directly connected has been described above, the present disclosure is not limited to such an example. The resistive heating layer 42 and the wire 48 may be indirectly connected. As an example, the wire 48 may be connected to the resistive heating layer 42 through a conductive leaf spring. As another example, the wire 48 may be connected to the resistive heating layer 42 through a spring pin. The inhalation device 100 may be manufactured by assembling a plurality of components including the heating system 30, and during the assembly process, the heating system 30 may be assembled into a main body including a power supply unit 111 and the like. At this time, the lower portion of the heating system 30 may be assembled into a socket provided in the main body, and the above-described leaf spring or spring pin may be provided in the socket. In this case, since the resistive heating layer 42 and the power supply unit 111 may be electrically connected when the lower portion of the heating system 30 is assembled into the socket, the steps for manufacturing the inhalation device 100 may be simplified. It should be noted that if the resistive heating layer 42 and the wire 48 are indirectly connected, it is desirable that the entire resistive heating layer 42 or at least its first end portions 46 (which are the points in contact with the wire 48) be electroplated with nickel, gold, or the like. This configuration achieves a stronger electrical connection between the resistive heating layer 42 and the leaf spring or spring pin. It should be noted that the receiving portion 50 and the wire 48 may be directly or indirectly connected in a similar manner.

[0199] Although an example has been described above in which the contact point (i.e., the first end portion 46) between the resistive heating layer 42 and the wire 48 is located on the pressing portion 62, the present disclosure is not limited to such an example. For example, the first electrically insulating layer 41 and the resistive heating layer 42 may extend to the bottom wall 56 of the accommodating portion 50, and the wire 48 may be directly or indirectly connected to the resistive heating layer 42 on the bottom wall 56 of the accommodating portion 50.

[0200] Although an example has been described above in which the external heat dissipation layer 90 covers the holding portion 60, the external heat dissipation layer 90 may cover not only the holding portion 60 but also the non-holding portion 69. Similarly, although an example has been described above in which the heat insulating sheet 71 covers the holding portion 60, the heat insulating sheet 71 may cover not only the holding portion 60 but also the non-holding portion 69.

[0201] Although an example has been described above in which the vertically long PI tape 92 is bonded to the non-pressing portion 66 when the external heat dissipation layer 90 is laminated to the accommodating portion 50, the present disclosure is not limited to such an example. The vertically long PI tape 92 may be bonded to the second electrically insulating layer 43 laminated on the pressing portion 62.

[0202] Although an example has been described above in which the rod-shaped substrate 150 includes the substrate portion 151 and the nozzle portion 152, the present disclosure is not limited to such an example. The rod-shaped substrate 150 may only include the substrate portion 151. Thus, the inhalation device 100 may include the nozzle portion 152.

[0203] For example, the nozzle portion 152 may be removably attached to the opening 52 of the accommodating portion 50.

[0204] When appropriate, two or more of the above embodiments and modification examples may be combined. As an example, the above embodiment may be combined with the fifth modification example. That is, the heating system 30 may include both the external heat dissipation layer 90 and the internal heat dissipation layer 96. As another example, the accommodating portion 50 may include four or more pressing portions 62, and Figure 9 and Figures 13 to 17 any two types of the illustrated heating units 40 may be provided on one accommodating portion 50. As another example, Figure 9 and Figures 13 to 17 any one type of the illustrated heating units 40 may be provided on Figure 18 the illustrated accommodating portion 50.

[0205] Although examples have been described above in which the wire 48 is connected to at least one of the two ends of each resistive heating layer 42, the present disclosure is not limited to such examples. As an example, the receiving portion 50 may have three or more pressing portions 62, and both ends of the resistive heating layer 42 disposed on the pressing portion 62 located at the center of the three pressing portions 62 may be connected to the receiving portion 50. Then, the resistive heating layer 42 having one end connected to the power supply unit 111 may be disposed on each of the two pressing portions 62 adjacent thereto and located on both sides thereof, and the three resistive heating layers 42 may form a series circuit. As another example, the receiving portion 50 may include two pressing portions 62, the resistive heating layer 42 having both ends connected to the receiving portion 50 may be disposed on each of the two pressing portions 62, and the wire connected to the power supply unit 111 may be connected to each of the two non-pressing portions 66. In this case, the two resistive heating layers 42 form a parallel circuit.

[0206] It should be noted that configurations such as the following configurations also fall within the technical scope of the present disclosure. (1)

[0208] An aerosol generating system, the aerosol generating system comprising: a tubular body that houses a matrix containing an aerosol source;

[0209] A plurality of resistive heating layers that are laminated on the outer side of the side wall of the tubular body,

[0210] A plurality of first electrically insulating layers that are laminated on the outer side of the side wall of the tubular body inside these resistive heating layers; and

[0211] A power supply unit that supplies power to these resistive heating layers,

[0212] wherein,

[0213] The tubular body is made of a conductive material; and

[0214] At least one of the two end portions of each resistive heating layer protrudes from the first electrically insulating layer and is connected to the tubular body, and is electrically connected to another resistive heating layer adjacent to the resistive heating layer via the tubular body, and is electrically connected to the power supply unit via the other resistive heating layer. (2)

[0216] The aerosol generating system according to (1), wherein the side wall of the tubular body includes a plurality of first side walls having a flat outer surface and a plurality of second side walls different from these first side walls;

[0217] These first side walls and these second side walls are alternately arranged along the circumferential direction of the tubular body;

[0218] These first electrical insulating layers are laminated onto the outer sides of these first side walls; and

[0219] With these resistance heating layers spaced apart at these second side walls, two of these resistance heating layers are laminated onto the outer sides of two first side walls that are adjacent to these second side walls and on both sides thereof. (3)

[0221] The aerosol generating system according to (2), wherein each of these resistance heating layers and these first electrical insulating layers is laminated using a chemical vapor deposition process or a printing process. (4)

[0223] The aerosol generating system according to any one of (1) to (3), wherein the portion of the outer periphery of the tubular body laminated with these first electrical insulating layers occupies less than 50% of the outer periphery of the tubular body. (5)

[0225] The aerosol generating system according to any one of (1) to (4), wherein these first electrical insulating layers have a shape conforming to these resistance heating layers. (6)

[0227] The aerosol generating system according to any one of (1) to (5), further comprising a plurality of second electrical insulating layers, which are laminated outside these resistance heating layers using a chemical vapor deposition process or a printing process, wherein

[0228] At least a portion of these resistance heating layers is sandwiched between these first electrical insulating layers and these second insulating layers. (7)

[0230] The aerosol generating system according to any one of (1) to (6), wherein a wire connected to the power supply unit is connected to the tubular body, and

[0231] One of the two end portions of each resistance heating layer protrudes from the first electrical insulating layer and is connected to the tubular body, and is electrically connected to the wire connected to the tubular body via the tubular body. (8)

[0233] The aerosol generating system according to any one of (3) to (7) as cited in (2), wherein, in the two end portions of each resistance heating layer, the end portion protruding from each first electrical insulating layer is connected to the first side wall. (9)

[0235] The aerosol generating system according to any one of (3) to (7) citing (2), wherein, in two end portions of each resistive heating layer, the end portions protruding from each first electrically insulating layer protrude from the first sidewall and are connected to the second sidewall. (10)

[0237] The aerosol generating system according to any one of (1) to (9), wherein a wire connected to the power supply unit is connected to one of the two end portions of each resistive heating layer. (11)

[0239] The aerosol generating system according to any one of (1) to (10), wherein a wire connected to the power supply unit is connected to each of the two end portions of each resistive heating layer. (12)

[0241] The aerosol generating system according to (10) or (11), wherein, in two end portions of each resistive heating layer, the end portion to which the wire connected to the power supply unit is connected is configured to be wider than its other portions. (13)

[0243] The aerosol generating system according to any one of (1) to (12), further comprising a first heat diffusion layer, which is laminated onto the outer side of the sidewall of the tubular body inside these resistive heating layers by means of an electroplating process. (14)

[0245] The aerosol generating system according to any one of (1) to (13), further comprising a second heat diffusion layer, which is wound around and laminated onto the outer side of the sidewall of the tubular body outside these resistive heating layers. (15)

[0247] The aerosol generating system according to any one of (1) to (14), further comprising a heat insulation layer, which is wound around and laminated onto the outer side of the sidewall of the tubular body outside these resistive heating layers. (16)

[0249] The aerosol generating system according to (15), wherein the heat insulation layer is laminated so as to cover a part of the sidewall of the tubular body in the axial direction of the tubular body, and

[0250] The end portions of the heat insulation layer in the axial direction of the tubular body and the portions exposed from the heat insulation layer are sealed by means of a sealing portion. (17)

[0252] The aerosol generating system according to any one of (1) to (16), wherein the resistive heating layers are disposed at positions corresponding to the portion of the substrate accommodated in the cylindrical body, and the aerosol source is distributed in this portion. (18)

[0254] The aerosol generating system according to any one of (3) to (17) as cited in (2), wherein the first side walls are flat plates;

[0255] The second side walls are curved plates that are curved to the outside of the tubular body along the circumferential direction of the tubular body; and

[0256] The substrate accommodated in the tubular body is pressed by the first side walls. (19)

[0258] The aerosol generating system according to any one of (3) to (17) as cited in (2), wherein the first side walls are flat plates;

[0259] The second side walls are flat plates;

[0260] The length of the first side walls in the circumferential direction of the tubular body is greater than the length of the second side walls; and

[0261] The substrate accommodated in the tubular body is pressed by the first side walls. (20)

[0263] The aerosol generating system according to any one of (1) to (19), further comprising the substrate.

[0264] List of reference numerals

[0265] 100 Inhalation device

[0266] 111 Power supply unit

[0267] 112 Sensor unit

[0268] 113 Notification unit

[0269] 114 Memory unit

[0270] 115 Communication unit

[0271] 116 Control unit

[0272] 150 Rod-shaped substrate

[0273] 151 Substrate portion

[0274] 152 Mouthpiece portion

[0275] 30 Heating system

[0276] 40 Heating unit

[0277] 41 First electrical insulation layer

[0278] 42 Resistance heating layer

[0279] 43 Second electrical insulation layer

[0280] 44 Heat generation area

[0281] 45 Heat generation area

[0282] 46 First end portion

[0283] 47 Second end portion

[0284] 48 Lead wire

[0285] 49 Notch

[0286] 50 Accommodating portion

[0287] 52 Opening

[0288] 54 Side wall (54a: Inner surface, 54b: Outer surface)

[0289] 56 Bottom wall (56a: Inner surface, 56b: Outer surface)

[0290] 58 First guiding portion (58a: Conical surface)

[0291] 60 Holding portion

[0292] 62 Pressing portion (62a: Inner surface, 62b: Outer surface)

[0293] 66 Non-pressing portion (66a: Inner surface, 66b: Outer surface)

[0294] 67 Gap

[0295] 68 Boundary

[0296] 69 Non-holding portion

[0297] 70 Heat insulation portion

[0298] 71 Heat insulation sheet

[0299] 72 PI tape

[0300] 73 Sealing member

[0301] 80 Internal space

[0302] 90 External heat diffusion layer

[0303] 91 Graphite sheet

[0304] 92 Vertical long PI belt

[0305] 93 Horizontal long PI belt (94: protruding part, 95: protruding part)

[0306] 96 Internal heat diffusion layer

[0307] 99 Heat shrinkable tube

Claims

1. An aerosol generating system, the aerosol generating system comprising: a tubular body that houses a substrate containing an aerosol source; a plurality of resistive heating layers that are laminated onto an outer side of a side wall of the tubular body, a plurality of first electrical insulating layers that are laminated onto the outer side of the side wall of the tubular body inside these resistive heating layers; and a power supply unit that supplies power to these resistive heating layers, wherein, the tubular body is made of a conductive material; at least one of two end portions of each resistive heating layer protrudes from the first electrical insulating layer and is connected to the tubular body, is electrically connected to another resistive heating layer adjacent to the resistive heating layer via the tubular body, and is electrically connected to the power supply unit via the other resistive heating layer.

2. The aerosol generating system according to claim 1, wherein, the side wall of the tubular body includes a plurality of first side walls having a flat outer surface and a plurality of second side walls different from these first side walls; these first side walls and these second side walls are alternately arranged along a circumferential direction of the tubular body; these first electrical insulating layers are laminated onto the outer sides of these first side walls; and in a state where these resistive heating layers are spaced apart at these second side walls, two of these resistive heating layers are laminated onto the outer sides of two first side walls adjacent to and on both sides of these second side walls among these first side walls.

3. The aerosol generating system according to claim 2, wherein, each of these resistive heating layers and these first electrical insulating layers is laminated using a chemical vapor deposition process or a printing process.

4. The aerosol generating system according to any one of claims 1 to 3, wherein, a portion of the outer periphery of the tubular body onto which these first electrical insulating layers are laminated occupies less than 50% of the outer periphery of the tubular body.

5. The aerosol generating system according to any one of claims 1 to 4, wherein, these first electrical insulating layers have a shape conforming to these resistive heating layers.

6. The aerosol generating system according to any one of claims 1 to 5, further comprising a plurality of second electrical insulating layers that are laminated outside these resistive heating layers using a chemical vapor deposition process or a printing process, wherein, at least a portion of these resistive heating layers is sandwiched between these first electrical insulating layers and these second insulating layers.

7. The aerosol generating system according to any one of claims 1 to 6, wherein, a wire connected to the power supply unit is connected to the tubular body, and one of two end portions of each resistive heating layer protrudes from the first electrical insulating layer and is connected to the tubular body, and is electrically connected to the wire connected to the tubular body via the tubular body.

8. The aerosol generating system according to any one of claims 3 to 7 citing claim 2, wherein, in two end portions of each resistive heating layer, the end portion protruding from each first electrical insulating layer is connected to the first side wall.

9. The aerosol generating system according to any one of claims 3 to 7 citing claim 2, wherein, Of both end portions of each resistance heating layer, an end portion protruding from each first electrical insulating layer protrudes from the first side wall and is connected to the second side wall.

10. An aerosol generating system according to any one of claims 1 to 9, in, A wire connected to the power supply unit is connected to one of the two end portions of each resistance heating layer.

11. An aerosol generating system according to any one of claims 1 to 10, in, A wire connected to the power supply unit is connected to each of both end portions of each resistance heating layer.

12. An aerosol generating system according to claim 10 or 11, in, Of both end portions of each resistance heating layer, the end portion to which the wire connected to the power supply unit is connected is configured to be wider than other portions thereof.

13. An aerosol generating system as claimed in any one of claims 1 to 12, further comprising a first heat diffusion layer laminated onto the outside of the side wall of the tubular body inside the resistive heating layers using an electroplating process.

14. An aerosol generating system as claimed in any one of claims 1 to 13, further comprising a second heat diffusion layer wrapped outside the resistive heating layers and laminated to the outside of the side wall of the tubular body.

15. An aerosol generating system as claimed in any one of claims 1 to 14, further comprising a thermal insulation layer wrapped outside the resistive heating layers and laminated to the outside of the side wall of the tubular body.

16. An aerosol generating system according to claim 15, in, The heat insulating layer is laminated so as to cover a portion of the side wall of the tubular body in the axial direction of the tubular body, and An end portion of the heat insulating layer in the axial direction of the tubular body and a portion exposed from the heat insulating layer are sealed by means of a sealing portion.

17. An aerosol generating system according to any one of claims 1 to 16, in, The resistive heating layers are arranged in positions corresponding to the portion of the substrate housed in the cylindrical body in which the aerosol source is distributed.

18. An aerosol generating system as claimed in any one of claims 3 to 17 as dependent on claim 2, in, These first side walls are flat plates; The second side walls are bent plates bent to the outside of the tubular body along the circumferential direction of the tubular body; and The matrix contained in the tubular body is pressed by the first side walls.

19. An aerosol generating system as claimed in any one of claims 3 to 17 as dependent on claim 2, in, These first side walls are flat plates; These second side walls are flat plates; The length of the first side walls in the circumferential direction of the tubular body is greater than the length of the second side walls; and The matrix contained in the tubular body is pressed by the first side walls.

20. An aerosol generating system as claimed in any one of claims 1 to 19, further comprising the substrate.

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