Aerosol generation device

Abstract

[Problem] To provide an aerosol generation device with which it is possible to more accurately measure the temperature of a heat-generating part. [Solution] An aerosol generation device comprising an accommodation space that accommodates an aerosol-generating base material, a heat-insulating structural body that has a cylindrical structure and that faces the accommodation space at an inner-side surface of the cylindrical structure, a heat-generating part that is provided to part of the inner-side surface of the heat-insulating structural body, and a temperature detection unit that is provided inside the heat-insulating structural body in correspondence to the heat-generating part.

Description

Aerosol Generator

[0001] The present invention relates to an aerosol generating device.

[0002] Inhalation devices, such as electronic cigarettes and nebulizers, which generate substances to be inhaled by users, are widely used. Inhalation devices can generate aerosols by heating an aerosol source. This allows users to inhale the aerosols generated by the inhalation devices and enjoy the flavors of the aerosols.

[0003] For example, an inhalation device can generate an aerosol from an aerosol-generating substrate by heating the aerosol-generating substrate containing an aerosol source from the periphery. However, when the aerosol-generating substrate is heated from the periphery, the heat used for heating is conducted to the housing of the inhalation device and then to the user's hand holding the inhalation device, which may cause the user to feel uncomfortable. Therefore, in a peripheral heating type inhalation device, a heat insulating structure that suppresses heat conduction to the housing is important.

[0004] For example, Patent Document 1 listed below discloses a device for heating smoking material that suppresses heat conduction to the housing by providing a heat insulating area surrounding the heating zone.

[0005] Special Publication No. 2020-532977

[0006] However, in the device disclosed in Patent Document 1, the heating zone that heats the aerosol-generating substrate is covered with a heat insulating area, making it difficult to directly measure the temperature of the heating zone, making it difficult to measure the temperature of the heating zone with high accuracy.

[0007] Therefore, the present invention has been made in consideration of the above problems, and an object of the present invention is to provide a new and improved aerosol generating device that is capable of measuring the temperature of the heat generating part with higher accuracy.

[0008] In order to solve the above problem, according to one aspect of the present invention, an aerosol generating device is provided, comprising: a storage space for storing an aerosol-generating substrate; an insulating structure having a cylindrical structure and facing the storage space on the inner surface of the cylindrical structure; a heat generating portion provided on a portion of the inner surface of the insulating structure; and a temperature detecting portion provided inside the insulating structure in correspondence with the heat generating portion.

[0009] The heat generating portion may generate heat by induction heating using a fluctuating magnetic field, and the temperature detecting portion may be provided corresponding to an electromagnetic induction source that generates the fluctuating magnetic field.

[0010] The heat insulating structure may include a first member facing the storage space, and a second member covering an outer surface of the first member and forming a sealed space between the first member and a second member.

[0011] The first member and the second member may be made of different materials.

[0012] The first member and the second member may be joined to each other by brazing.

[0013] The temperature detection unit may be provided inside the sealed space of the heat insulating structure.

[0014] The inside of the sealed space may be in a vacuum state.

[0015] A part of the first member may function as the heat generating portion by generating heat through induction heating.

[0016] The temperature detection portion may be fixed to the first member functioning as the heat generating portion with a thermosetting adhesive.

[0017] The temperature detection unit may detect the temperature of the heat generating unit.

[0018] The temperature detection unit may include a thermocouple.

[0019] An air flow that transports the aerosol generated from the aerosol-generating substrate flows through the storage space, and a heat-resistant cable that extends upstream of the air flow and is pulled out to the outside of the insulating structure may be connected to the thermocouple.

[0020] As described above, according to the present invention, it is possible to measure the temperature of a heat generating portion with higher accuracy.

[0021] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments and is not to be construed as limiting the invention.

[0022] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this specification and drawings, components having substantially the same functional configurations are designated by the same reference numerals, and redundant explanations will be omitted.

[0023] 1. Configuration of Suction Apparatus First, a configuration example of a suction apparatus according to an embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a schematic diagram showing a configuration example of a suction apparatus 100 according to this embodiment.

[0024] As shown in FIG. 1 , the suction device 100 includes, for example, 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, an electromagnetic induction source 162, and a holding unit 140.

[0025] The inhalation device 100 according to this embodiment performs induction heating (IH) on the stick-shaped substrate 150 containing the aerosol source while the stick-shaped substrate 150 is held in the holding part 140. As a result, the aerosol source contained in the stick-shaped substrate 150 is atomized, generating aerosol from the stick-shaped substrate 150, and the generated aerosol is inhaled by the user.

[0026] The inhalation device 100 and the stick-type substrate 150 work together to generate the aerosol that is inhaled by the user. Therefore, the combination of the inhalation device 100 and the stick-type substrate 150 can be considered as an aerosol generating system.

[0027] The power supply unit 111 stores power and supplies power to each component of the suction device 100. The power supply unit 111 may be configured with a rechargeable secondary battery such as a lithium-ion secondary battery. The power supply unit 111 may be charged by connecting to an external power source via a USB (Universal Serial Bus) cable or the like. The power supply unit 111 may also be charged by a power transmission device that is not directly connected using wireless power transmission technology. Furthermore, the power supply unit 111 may be provided detachably from the suction device 100, or may be provided so as to be replaceable with a new power supply unit 111.

[0028] The sensor unit 112 detects various information related to the suction device 100 and outputs the detected information to the control unit 116. As an example, the sensor unit 112 may be configured with a pressure sensor such as a condenser microphone, a flow rate sensor, or a temperature sensor. In such a case, when the sensor unit 112 detects a numerical value associated with the user's inhalation, it can output information indicating that the user has performed inhalation to the control unit 116. As another example, the sensor unit 112 may be configured with an input device such as a button or switch that accepts information input from the user, and may be configured to include, for example, a button that instructs the start / stop of aerosol generation. In such a case, the sensor unit 112 can output information input by the user to the control unit 116. As another example, the sensor unit 112 may be configured with a temperature sensor that detects the temperature of a heat-generating portion that heats the stick-shaped substrate 150. The temperature sensor may detect the temperature of the heat-generating portion based on, for example, the electrical resistance value of the electromagnetic induction source 162. In such a case, the sensor unit 112 can detect the temperature of the stick-shaped substrate 150 held by the holding unit 140 based on the temperature of the heat-generating portion.

[0029] The notification unit 113 notifies the user of information. As an example, the notification unit 113 may be configured with a light-emitting device such as an LED (Light Emitting Diode). In this case, the notification unit 113 can emit light in different light-emitting patterns when the power supply unit 111 needs charging, when the power supply unit 111 is charging, when an abnormality has occurred in the suction device 100, and so on. The light-emitting pattern here is a concept that includes color, timing of turning on / off, and so on. The notification unit 113 may be configured with a display device that displays images, a sound output device that outputs sound, a vibration device that vibrates, or the like, together with or instead of the light-emitting device. Additionally, the notification unit 113 may notify the user of information indicating that inhalation by the user is possible. The information indicating that inhalation by the user is possible is notified to the user, for example, when the temperature of the induction-heated stick-shaped substrate 150 reaches a predetermined temperature.

[0030] The storage unit 114 stores various types of information for the operation of the suction device 100. The storage unit 114 is configured, for example, with a non-volatile storage medium such as a flash memory. One example of the information stored in the storage unit 114 is information about the OS (Operating System) of the suction device 100, such as the control details of various components by the control unit 116. Another example of the information stored in the storage unit 114 is information about suction by the user, such as the number of suctions, the time of suction, or the cumulative suction time.

[0031] The communication unit 115 is a communication interface for transmitting and receiving information between the suction device 100 and other devices. The communication unit 115 can perform communication in accordance with any wired or wireless communication standard. Examples of such communication standards include a wireless local area network (LAN), a wired LAN, Wi-Fi (registered trademark), or Bluetooth (registered trademark). As an example, the communication unit 115 may transmit information about the user's suction to a smartphone to display the information about the user's suction on the smartphone. As another example, the communication unit 115 may receive information about a new OS from a server to update the OS information stored in the storage unit 114.

[0032] The control unit 116 functions as an arithmetic processing unit and a control unit, and controls the overall operation of the suction device 100 in accordance with various programs. The control unit 116 may be realized by an electronic circuit such as a CPU (Central Processing Unit) or a microprocessor. The control unit 116 may also be configured to include a ROM (Read Only Memory) that stores the programs and arithmetic parameters to be used, and a RAM (Random Access Memory) that temporarily stores parameters that change as appropriate.

[0033] Specifically, the control unit 116 may control the execution of various processes related to the operation of the suction device 100. For example, the control unit 116 may control the execution of processes such as power supply from the power supply unit 111 to the other components, charging of the power supply unit 111, detection of information by the sensor unit 112, notification of information by the notification unit 113, storage or reading of information by the memory unit 114, and transmission and reception of information by the communication unit 115. The control unit 116 can also control the input of information to each component and the execution of processes based on information output from each component, which are executed by the suction device 100.

[0034] The holding part 140 has a storage space 141 and an opening 142 that connects the storage space 141 to the outside, and holds a stick-shaped substrate 150 inserted into the storage space 141 through the opening 142. Specifically, the holding part 140 may be configured in a cylindrical shape with the opening 142 and bottom 143 as its bottom surface and the columnar storage space 141 defined by its side surfaces. The holding part 140 is configured so that the inner diameter of at least a portion of the height direction of the cylindrical shape is smaller than the outer diameter of the stick-shaped substrate 150, thereby enabling the stick-shaped substrate 150 inserted into the storage space 141 to be compressed from the outer periphery and held. The holding part 140 also has the function of defining a flow path for air passing through the stick-shaped substrate 150. An air inlet, which is the entrance for air into the flow path, is located in, for example, the bottom 143. An air outlet, which is the exit for air from the flow path, is the opening 142.

[0035] Furthermore, a partial region of the holding part 140 also functions as a heat generating part. For example, if the inner wall of the holding part 140 facing the accommodation space 141 is made of a material that generates heat by electromagnetic induction from the electromagnetic induction source 162, the holding part 140 can heat the stick-shaped substrate 150 by induction heating from the electromagnetic induction source 162.

[0036] The stick-type substrate 150 is a stick-shaped member containing an aerosol source. The aerosol source is atomized by heating to generate an aerosol. The aerosol source may be, for example, a tobacco-derived processed product, or a processed product obtained by forming shredded tobacco or tobacco raw material into granules, sheets, or powder. The aerosol source may also contain non-tobacco-derived components produced from plants other than tobacco (e.g., mint and herbs). For example, the aerosol source may contain a flavoring component. When the inhalation device 100 is a medical inhaler, the aerosol source may contain a medication for inhalation by the patient. The aerosol source is not limited to a solid, but may also be a liquid such as a polyhydric alcohol, such as glycerin or propylene glycol, or water. When the stick-type substrate 150 is held by the holding unit 140, the region of the stick-type substrate 150 containing the aerosol source is accommodated in the accommodation space 141 of the holding unit 140.

[0037] Furthermore, at least a portion of the stick-type substrate 150 protrudes from the opening 142 when the stick-type substrate 150 is held by the holding part 140. When the user holds one end of the stick-type substrate 150 protruding from the opening 142 in their mouth and sucks, air flows into the inside of the holding part 140 through an air inlet hole (not shown). The flowing-in air passes through the storage space 141 of the holding part 140 and reaches the user's mouth together with the aerosol generated from the stick-type substrate 150.

[0038] The electromagnetic induction source 162 is provided further outside the holding unit 140 in the insertion direction of the stick-shaped substrate 150. When an alternating current is supplied to the electromagnetic induction source 162 from the power supply unit 111, the electromagnetic induction source 162 can generate a fluctuating magnetic field at a position overlapping with a portion of the holding unit 140. In this manner, the electromagnetic induction source 162 can generate Joule heat in the holding unit 140 by generating eddy currents through electromagnetic induction in the holding unit 140, which functions as a heat generating unit. Furthermore, the electromagnetic induction source 162 can generate heat in the holding unit 140 by generating hysteresis loss through electromagnetic induction in the holding unit 140, which functions as a heat generating unit. The heat generated in the holding unit 140 heats the aerosol source included in the stick-shaped substrate 150, thereby generating an aerosol.

[0039] For example, when the sensor unit 112 detects that a predetermined user input has been made, the suction device 100 may supply power to the electromagnetic induction source 162 and generate an aerosol by inductively heating the aerosol source included in the stick-shaped substrate 150. When the temperature of the aerosol source reaches a predetermined temperature, the suction device 100 allows the user to inhale. Thereafter, when the sensor unit 112 detects that a predetermined user input has been made, the suction device 100 may stop supplying power to the electromagnetic induction source 162. Furthermore, the suction device 100 may generate an aerosol by supplying power to the electromagnetic induction source 162 during a period in which the sensor unit 112 detects that the user is inhaling, for example.

[0040] In the suction device 100 according to this embodiment, a portion of the holding part 140 functions as a heat-generating part, and also functions as a heat-insulating element that suppresses the conduction of heat generated in the heat-generating part to the housing. Specifically, the inner surface of the holding part 140 facing the accommodation space 141 is made of a material that can be induction-heated, and a heat-insulating structure is formed between the inner surface and the outer surface. This allows the suction device 100 to realize, in the holding part 140, a heat-generating part that heats the stick-shaped substrate 150 from the periphery and a heat-insulating structure that suppresses heat conduction from the heat-generating part, thereby enabling the overall size of the device to be reduced.

[0041] Furthermore, in the suction device 100 according to this embodiment, a temperature detection unit is provided inside the heat insulating structure at a position corresponding to a partial region that functions as a heat generating unit of the holding unit 140. This allows the suction device 100 to directly measure the temperature of the heat generating unit with the temperature detection unit without being affected by the heat insulating function of the heat insulating structure.

[0042] 2. Configuration of the Holding Unit Next, the holding unit 140 included in the suction device 100 according to this embodiment will be described in more detail with reference to Fig. 2. Fig. 2 is a schematic cross-sectional view showing the configuration of the holding unit 140 included in the suction device 100.

[0043] As shown in FIG. 2 , the holding unit 140 includes a first member 171 , a second member 172 , and a temperature detection unit 181 .

[0044] The first member 171 has a cylindrical structure with its inner surface facing the accommodation space 141 that accommodates the stick-shaped substrate 150. The first member 171 is made of a material that can be induction-heated by a fluctuating magnetic field, and functions as a susceptor that heats the stick-shaped substrate 150. For example, the first member 171 may be made of a ferromagnetic material that is relatively easily induction-heated, such as iron, nickel, or cobalt, or may be made of an alloy or compound primarily containing these ferromagnetic materials.

[0045] The second member 172 has a cylindrical structure that covers the first member 171, and forms a sealed space 173 between itself and the outer surface of the first member 171. The inside of the sealed space 173 is, for example, 10 －２ The second member 172 may be a vacuum space of 100 Pa or less. This allows the holding unit 140 to suppress heat conduction from the first member 171 to the second member 172 by the vacuum insulation of the sealed space 173. The second member 172 may be made of any material as long as it can be bonded to the first member 171, and may be made of a material different from that of the first member 171.

[0046] The first member 171 and the second member 172 can be joined to each other at joints 174 at both ends of each cylindrical structure to form a sealed space 173. Specifically, at the joints 174, both ends of the cylindrical structure of the second member 172 are bent twice so as to form a step toward the outer surface of the first member 171, and the ends beyond the formed step are joined to the outer surface of the first member 171. As a result, the sealed space 173 is formed in a cylindrical shape between the first member 171 and the second member 172 so as to cover the first member 171. When the first member 171 and the second member 172 are joined so as to form a step on the second member 172 side, the holding unit 140 can further improve the adhesion between the first member 171, which is a heat-generating unit, and the stick-shaped substrate 150.

[0047] Such a joint 174 can be formed, for example, by the following method. First, both ends of the cylindrical structure of the second member 172 are processed to form a step, and then the first member 171 is inserted inside the second member 172, with an adhesive or sealant applied to the step. Next, the adhesive-applied ends of the first member 171 and the second member 172 are joined by brazing or the like, and then the inside of the sealed space 173 is evacuated from the other end applied with the sealant. Then, the other end applied with the sealant is sealed by brazing or the like.

[0048] The temperature detection unit 181 is provided inside the sealed space 173 between the first member 171 and the second member 172, corresponding to the heat generating region 162S of the first member 171 that is induction heated.

[0049] Heat-generating region 162S is a region where a fluctuating magnetic field generated by electromagnetic induction source 162 is superimposed on first member 171. First member 171, on which the fluctuating magnetic field is superimposed, is induction-heated, thereby heating stick-shaped substrate 150 that faces first member 171 in heat-generating region 162S. For example, if electromagnetic induction source 162 is an induction coil, heat-generating region 162S may be a region where the outer periphery of holding part 140 is covered by the induction coil that is electromagnetic induction source 162.

[0050] The temperature detection unit 181 is attached to the outer surface of the first member 171 within the sealed space 173 of the heat generation region 162S. This allows the temperature detection unit 181 to directly measure the temperature of the induction-heated first member 171. Therefore, the temperature detection unit 181 can measure the temperature of the induction-heated first member 171 with higher accuracy than when measuring the temperature of the first member 171 in an area outside the heat generation region 162S or when measuring the temperature of the first member 171 remotely using radiated infrared rays, for example.

[0051] The temperature detection unit 181 may include, for example, a thermocouple as a temperature sensor. The thermocouple is a temperature sensor that measures a temperature difference based on a thermoelectric power generated at a junction between two types of metal, and can measure the temperature of the first member 171 by being attached to the outer surface of the first member 171 of the heat generation region 162S with a thermosetting adhesive.

[0052] Furthermore, data such as temperature measured by the temperature detection unit 181 may be output to the outside of the sealed space 173 via a heat-resistant cable 182. The heat-resistant cable 182 is a cable that has a heat resistance of, for example, 500°C or higher, and extends from the temperature detection unit 181 to the upstream side and is drawn out to the outside of the sealed space 173. The upstream side refers to the upstream side of the airflow that flows through the storage space 141 and transports the aerosol generated from the stick-shaped substrate 150. In other words, the bottom 143 side of the holding unit 140 is the upstream side. Note that the opening for passing the heat-resistant cable 182 from the sealed space 173 to the outside may be sealed, for example, by brazing.

[0053] According to the above configuration, the suction device 100 according to this embodiment can measure the temperature of the first member 171 in the heat-generating region 162S by direct contact with the temperature detection unit 181, even when heat conduction to the housing is suppressed by vacuum insulation provided by the sealed space 173. Therefore, the suction device 100 can measure the temperature of the first member 171 in the heat-generating region 162S that is induction-heated with higher accuracy, and can therefore heat the stick-shaped substrate 150 more efficiently.

[0054] 3. Modifications Next, a modification of the suction device 100 according to the present embodiment will be described with reference to Fig. 3. Fig. 3 is a schematic cross-sectional view showing the configuration of a holder 140A according to the modification.

[0055] 3, the holding unit 140A includes a first member 171, a second member 172, a heat generating unit 163, and a temperature detecting unit 181. The holding unit 140A according to the modified example differs from the holding unit 140 shown in FIG. 2 in that the first member 171 is not induction heated, and a heat generating unit 163 is further provided on the inner surface of the first member 171.

[0056] The first member 171 has a cylindrical structure whose inner surface faces the accommodation space 141 that accommodates the stick-shaped substrate 150. The second member 172 has a cylindrical structure that covers the first member 171, and forms a sealed space 173 between itself and the outer surface of the first member 171. The inside of the sealed space 173 is, for example, 10 －２ The first member 171 and the second member 172 may be a vacuum space of 100 Pa or less. This allows the holding unit 140 to suppress heat conduction from the accommodation space 141 to the second member 172 by the vacuum insulation of the sealed space 173. The first member 171 and the second member 172 may be made of metal, glass, or the like that can be easily joined to each other.

[0057] The first member 171 and the second member 172 are joined to each other at joints 174 at both ends of each cylindrical structure, thereby forming a sealed space 173. Specifically, at the joints 174, both ends of the cylindrical structure of the second member 172 are bent twice so as to form a step toward the outer surface of the first member 171, and the ends beyond the formed step are joined to the outer surface of the first member 171. As a result, the sealed space 173 is formed in a cylindrical shape between the first member 171 and the second member 172 so as to cover the first member 171.

[0058] The heat generating part 163 is a resistance heat generating part attached along the inner surface of the first member 171. Specifically, the heat generating part 163 may be a film heater in which resistance heat generating wiring is sandwiched between insulating films. The heat generating part 163 is attached along the inner surface of the first member 171 in a heat generating region 162S that corresponds to the region of the stick-shaped substrate 150 filled with the aerosol source.

[0059] The temperature detection unit 181 is provided in the sealed space 173 between the first member 171 and the second member 172, corresponding to the heat generation region 162S in which the heat generation unit 163 is provided. The temperature detection unit 181 may include, for example, a thermocouple as a temperature sensor. The temperature detection unit 181 is attached to the outer surface of the first member 171 within the sealed space 173 in the heat generation region 162S using a thermosetting adhesive or the like. This allows the temperature detection unit 181 to measure the temperature of the heat generation unit 163 via the first member 171.

[0060] Here, the temperature of the heat generating portion 163 can be estimated from the electrical resistance value of the resistive heating wiring included in the film heater. On the other hand, the holding portion 140A according to the modified example can measure the temperature of the heat generating portion 163 using the temperature detection portion 181, and therefore can measure the temperature of the heat generating portion 163 with higher accuracy. Furthermore, the holding portion 140A according to the modified example is provided with multiple means for measuring the temperature of the heat generating portion 163, so that even if an error occurs in one temperature measurement means, the temperature of the heat generating portion 163 can be measured by the other temperature measurement means.

[0061] Data such as temperature measured by the temperature detection unit 181 can be output to the outside of the sealed space 173 via a heat-resistant cable 182. The heat-resistant cable 182 is a cable that can withstand heat of, for example, 500°C or higher, and extends upstream from the temperature detection unit 181 and is drawn out to the outside of the sealed space 173. An opening for passing the heat-resistant cable 182 from the sealed space 173 to the outside may be sealed by, for example, brazing.

[0062] Although the preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to these examples. It is clear that a person skilled in the art to which the present invention pertains can conceive of various modifications and alterations within the scope of the technical ideas set forth in the claims, and it is understood that these also naturally fall within the technical scope of the present invention.

[0063] The following configurations also fall within the technical scope of the present invention. (1) An aerosol generating device comprising: a storage space for storing an aerosol-generating substrate; a thermal insulation structure having a cylindrical structure and an inner surface of the cylindrical structure facing the storage space; a heat generating unit provided on a part of the inner surface of the thermal insulation structure; and a temperature detecting unit provided inside the thermal insulation structure in correspondence with the heat generating unit. (2) The aerosol generating device according to (1), wherein the heat generating unit generates heat by induction heating using a fluctuating magnetic field, and the temperature detecting unit is provided in correspondence with an electromagnetic induction source that generates the fluctuating magnetic field. (3) The aerosol generating device according to (1) or (2), wherein the thermal insulation structure includes a first member facing the storage space and a second member covering the outer surface of the first member and forming a sealed space between the first member and the second member. (4) The aerosol generating device according to (3), wherein the first member and the second member are made of different materials. (5) The aerosol generation device according to (3) or (4), wherein the first member and the second member are joined to each other by brazing. (6) The aerosol generation device according to any one of (3) to (5), wherein the temperature detection unit is provided inside the sealed space of the heat insulating structure. (7) The aerosol generation device according to any one of (3) to (6), wherein the inside of the sealed space is in a vacuum state. (8) The aerosol generation device according to any one of (3) to (7), wherein a part of the first member generates heat by induction heating to function as the heat generating unit. (9) The aerosol generation device according to (8), wherein the temperature detection unit is fixed to the first member functioning as the heat generating unit with a thermosetting adhesive. (10) The aerosol generation device according to (9), wherein the temperature detection unit detects the temperature of the heat generating unit. (11) The aerosol generation device according to any one of (1) to (10), wherein the temperature detection unit includes a thermocouple. (12) The aerosol generating device according to (11), wherein an air flow that transports the aerosol generated from the aerosol generating substrate flows through the storage space, and a heat-resistant cable that is extended upstream of the air flow and drawn out to the outside of the thermal insulation structure is connected to the thermocouple.

[0064] REFERENCE SIGNS LIST 100 Suction device 111 Power supply unit 112 Sensor unit 113 Notification unit 114 Memory unit 115 Communication unit 116 Control unit 140, 140A Holding unit 141 Storage space 142 Opening 143 Bottom 150 Stick-shaped substrate 162 Electromagnetic induction source 162S Heat-generating region 163 Heat-generating unit 171 First member 172 Second member 173 Sealed space 174 Joint 181 Temperature detection unit 182 Heat-resistant cable

Claims

1. a storage space for storing an aerosol-generating substrate; A thermal insulation structure having a cylindrical structure and an inner surface of the cylindrical structure facing the storage space; A heat generating portion provided on a part of the inner surface of the thermal insulation structure; A temperature detection unit provided inside the thermal insulation structure in correspondence with the heat generating unit; An aerosol generating device comprising:

2. The heat generating portion generates heat by induction heating using a fluctuating magnetic field, The aerosol generating device according to claim 1 , wherein the temperature detection unit is provided corresponding to an electromagnetic induction source that generates the varying magnetic field.

3. The aerosol generating device described in claim 1, wherein the insulating structure includes a first member facing the storage space and a second member covering the outer surface of the first member and forming a sealed space between the first member and the second member.

4. The aerosol generating device according to claim 3 , wherein the first member and the second member are made of different materials.

5. The aerosol generating device according to claim 3 , wherein the first member and the second member are joined to each other by brazing.

6. The aerosol generating device according to any one of claims 3 to 5, wherein the temperature detection unit is provided inside the sealed space of the thermal insulation structure.

7. The aerosol generating device according to any one of claims 3 to 5, wherein the inside of the sealed space is in a vacuum state.

8. The aerosol generating device according to any one of claims 3 to 5, wherein a portion of the first member functions as the heat generating portion by generating heat through induction heating.

9. The aerosol generating device according to claim 8 , wherein the temperature detection unit is fixed to the first member functioning as the heat generating unit by a thermosetting adhesive.

10. The aerosol generating device according to claim 9 , wherein the temperature detection unit detects a temperature of the heating unit.

11. The aerosol generating device according to claim 1 , wherein the temperature detection unit includes a thermocouple.

12. An air flow for transporting the aerosol generated from the aerosol-generating substrate flows through the storage space, A heat-resistant cable is connected to the thermocouple and is extended to the upstream side of the air flow and is drawn out of the thermal insulation structure. The aerosol generating device according to claim 11.