WO2024004214A1

WO2024004214A1 - Aerosol generation device and aerosol generation system

Info

Publication number: WO2024004214A1
Application number: PCT/JP2022/026502
Authority: WO
Inventors: 宣弘竜田
Original assignee: 日本たばこ産業株式会社
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2024-01-04

Abstract

[Problem] To provide an aerosol generation device and an aerosol generation system in which it is possible to further enhance energy efficiency when generating an aerosol. [Solution] An aerosol generation device comprising an accommodation space that accommodates an aerosol-generating base material containing an aerosol source, and a heating unit that extends along the accommodation space and heats the aerosol-generating base material, the heating unit having: a heating region provided in the extension direction of the heating unit; an extension region provided in the extension region of the heating unit as a region different from the heating region; and a heat-transmission-suppressing element provided between the heating region and the extension region, the heat-transmission-suppressing element having a lower heat transmission rate per unit time than both the heating region and the extension region.

Description

Aerosol generation device and aerosol generation system

The present invention relates to an aerosol generation device and an aerosol generation system.

Inhalation devices such as electronic cigarettes and nebulizers that produce substances that are inhaled by users are widely used. A suction device can generate an aerosol by heating an aerosol source. Thereby, the user can enjoy the flavor of the aerosol by sucking the aerosol generated by the suction device.

For example, the suction device can generate an aerosol from the aerosol-generating base material by heating the aerosol-generating base material including the aerosol source from the outer periphery. However, if the heat for heating the aerosol-generating substrate is conducted to an unintended region, the energy efficiency in generating aerosol will decrease. Therefore, in an aerosol generation device that heats an aerosol generation base material from the outer periphery, it is important to control conduction of heat for heating the aerosol generation base material.

For example, Patent Document 1 listed below discloses a device for heating smokable material that suppresses conduction of heat to the casing by providing a heat insulating area whose inside is evacuated.

Special Publication No. 2020-532977

However, in the device disclosed in Patent Document 1, the inner wall that defines the heating zone that accommodates the article containing the smokable material extends outside the heating zone, so that the heat for heating the article is transmitted along the inner wall. There was a possibility of leakage outside the heating zone.

Therefore, the present invention was made in view of the above problems, and an object of the present invention is to further improve energy efficiency by suppressing the leakage of heat that heats the aerosol-generating base material. Another object of the present invention is to provide a new and improved aerosol generation device and aerosol generation system.

In order to solve the above problems, according to one aspect of the present invention, there is provided a housing space that houses an aerosol-generating substrate including an aerosol source, and a housing that extends along the housing space and heats the aerosol-generating substrate. a heating section, the heating section includes a heating region provided in an extending direction of the heating section, and an extending region provided as a region different from the heating region in the extending direction of the heating section; An aerosol generation device is provided, comprising: a heat conduction suppressing element that is provided between the heating region and the extension region, and has a smaller amount of heat conduction per unit time than the heating region and the extension region.

The heat conduction suppressing element may include a thin portion provided in the heating section.

The extension region includes a first extension region provided at one end of the heating region, and a second extension region provided at the other end of the heating region, and the heat conduction suppressing element includes: The method may include a first heat conduction suppressing element provided between the first extending region and the heating region, and a second heat conduction suppressing element provided between the second extending region and the heating region. good.

The amount of heat conduction per unit time of the first heat conduction suppressing element may be different from the amount of heat conduction per unit time of the second heat conduction suppressing element.

The first heat conduction suppressing element and the second heat conduction suppressing element may differ from each other in at least one of the width in the extending direction, the area of the included thin part, or the amount of digging. .

The amount of heat conduction per unit time of the first heat conduction suppressing element may be smaller than the amount of heat conduction per unit time of the second heat conduction suppressing element.

The one end side may be on the upstream side of the air flow passing through the aerosol-generating base material, and the other end side may be on the downstream side opposite to the upstream side.

The heating region may be provided corresponding to at least a portion of a filling region of the aerosol generating substrate filled with the aerosol source.

The aerosol-generating base material may further include an unfilled region different from the filled region, and the extended region may be provided corresponding to at least a portion of the unfilled region.

The heating section may be provided on an inner surface of a cylindrical member that includes the housing space.

The heat conduction suppressing element may be provided in an annular shape along the circumferential direction of the cylindrical member.

The cylindrical member may have a vacuum insulation structure, and the heating section may be induction heated by a fluctuating magnetic field.

The heat conduction suppressing element includes a thin section provided in the heating section, and the thin section is formed by thinning the heating section from a side opposite to a side facing the accommodation space. Good too.

The heat conduction suppressing element may be made of a material having a lower thermal conductivity than at least one of the heating region or the extension region.

Further, in order to solve the above problems, according to another aspect of the present invention, the present invention includes an aerosol generation base material including an aerosol source, and an aerosol generation device that heats the aerosol generation base material, and the aerosol generation device comprises a housing space that accommodates the aerosol-generating base material, and a heating part that extends along the housing space and heats the aerosol-generating base material, and the heating part is arranged in an extension of the heating part. a heating region provided in the heating region, an extending region provided in the extending direction of the heating section as a region different from the heating region, and a heating region provided between the heating region and the extending region; and a heat conduction suppressing element that conducts less heat per unit time than the extension area.

As explained above, according to the present invention, it is possible to further improve the energy efficiency of the aerosol generation device when generating aerosol.

FIG. 1 is a schematic diagram showing a configuration example of a suction device according to an embodiment of the present invention. It is a typical sectional view showing the composition of the holding part with which a suction device is provided. FIG. 2 is a schematic diagram showing an example of the configuration of a stick-type base material. FIG. 3 is an explanatory diagram showing the appearance and cross section of a holding part according to a first specific example. FIG. 7 is an explanatory diagram showing the appearance and cross section of a holding part according to a second specific example. It is a schematic diagram which shows an example of the 1st modification of a 1st heat conduction suppression element and a 2nd heat conduction suppression element. It is a schematic diagram which shows the other example of the 1st modification of a 1st heat conduction suppression element and a 2nd heat conduction suppression element. It is a typical sectional view showing the composition of the holding part concerning the 2nd modification.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Note that, in this specification and the drawings, components having substantially the same functional configurations are designated by the same reference numerals and redundant explanation will be omitted.

<1. Configuration of suction device>
First, with reference to FIG. 1, a configuration example of a suction device according to an embodiment of the present invention will be described. FIG. 1 is a schematic diagram showing a configuration example of a suction device 100 according to the present embodiment.

As shown in FIG. 1, the suction device 100 includes, for example, a power supply section 111, a sensor section 112, a notification section 113, a storage section 114, a communication section 115, a control section 116, an electromagnetic induction source 162, A holding part 140 is provided.

The suction device 100 according to the present embodiment performs induction heating (IH) on the stick-type base material 150 including the aerosol source while holding the stick-type base material 150 in the holding part 140. As a result, the aerosol source included in the stick-type base material 150 is atomized to generate an aerosol from the stick-type base material 150, and the generated aerosol is inhaled by the user.

Note that the suction device 100 and the stick-type base material 150 cooperate to generate an aerosol that is suctioned by the user. Therefore, the combination of the suction device 100 and the stick-type base material 150 can be regarded as an aerosol generation system.

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 by, for example, a rechargeable and dischargeable secondary battery such as a lithium ion secondary battery. The power supply unit 111 may be charged by being connected to an external power supply via a USB (Universal Serial Bus) cable or the like. Further, the power supply unit 111 may 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 to be detachable from the suction device 100, or may be provided to be replaceable with a new power supply unit 111.

The sensor unit 112 detects various information regarding 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 suction by the user, it can output information indicating that suction has been performed by the user to the control unit 116. As another example, the sensor unit 112 may be configured with an input device such as a button or a switch that accepts information input from the user, and may include a button for instructing to start/stop the generation of aerosol, for example. Good too. 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 section 112 may be configured with a temperature sensor that detects the temperature of a heat generating section that heats the stick-type base material 150. The temperature sensor may detect the temperature of the heat generating portion based on the electrical resistance value of the electromagnetic induction source 162, for example. In such a case, the sensor section 112 can detect the temperature of the stick-shaped base material 150 held by the holding section 140 based on the temperature of the heat generating section.

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). According to this, the notification unit 113 emits different light emission patterns when the power supply unit 111 requires charging, when the power supply unit 111 is charging, or when an abnormality occurs in the suction device 100. Can emit light. The light emission pattern here is a concept that includes color, timing of turning on/off, and the like. The notification unit 113 may be configured with a display device that displays an image, a sound output device that outputs sound, a vibration device that vibrates, or the like together with or in place of the light emitting device. In addition, the notification unit 113 may notify information indicating that suction by the user is now possible. Information indicating that suction by the user is now possible is notified to the user, for example, when the temperature of the stick-shaped base material 150 that has been subjected to induction heating reaches a predetermined temperature.

The storage unit 114 stores various information for the operation of the suction device 100. The storage unit 114 is configured by, for example, a nonvolatile storage medium such as a flash memory. An example of the information stored in the storage unit 114 is information regarding the OS (Operating System) of the suction device 100, such as control details of various components by the control unit 116. Another example of the information stored in the storage unit 114 is information related to suction by the user, such as the number of suctions, the time of suction, or the cumulative suction time.

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 based on any wired or wireless communication standard. As such a communication standard, for example, wireless LAN (Local Area Network), wired LAN, Wi-Fi (registered trademark), Bluetooth (registered trademark), or the like may be adopted. As an example, the communication unit 115 may transmit information regarding suction by the user to the smartphone in order to display the information regarding suction by the user on the smartphone. As another example, the communication unit 115 may receive new OS information from a server in order to update the OS information stored in the storage unit 114.

The control unit 116 functions as an arithmetic processing device and a control device, and controls overall operations within the suction device 100 according to various programs. The control unit 116 may be realized by, for example, an electronic circuit such as a CPU (Central Processing Unit) or a microprocessor. Further, the control unit 116 may include a ROM (Read Only Memory) that stores programs to be used, calculation parameters, etc., and a RAM (Random Access Memory) that temporarily stores parameters that change as appropriate.

Specifically, the control unit 116 may control execution of various processes related to the operation of the suction device 100. For example, the control unit 116 may feed power from the power supply unit 111 to other components, charge the power supply unit 111, detect information by the sensor unit 112, notify information by the notification unit 113, store information by the storage unit 114, or Execution of processing such as reading and transmission and reception of information by the communication unit 115 may be controlled. Further, the control unit 116 can also control the input of information to each component and the execution of processing based on information output from each component, which are executed by the suction device 100.

The holding part 140 has a housing space 141 and an opening 142 that communicates the housing space 141 with the outside, and holds the stick-shaped base material 150 inserted into the housing space 141 from the opening 142. Specifically, the holding portion 140 may have a cylindrical shape with the opening 142 and the bottom portion 143 as the bottom surface and the columnar accommodation space 141 defined on the side surface. The holding part 140 has an inner diameter smaller than the outer diameter of the stick-type base material 150 in at least a part of the height direction of the cylindrical shape, so that the stick-type base material 150 inserted into the accommodation space 141 can be held in the holding part 140. It can be held by pressing from the outer periphery. The holding portion 140 also has the function of defining an air flow path through the stick-type base material 150. An air inflow hole, which is an inlet of air into the flow path, is arranged at the bottom 143, for example. The air outlet hole, which is the outlet of the air from the flow path, is the opening 142.

Further, a part of the holding section 140 also functions as a heat generating section. For example, if the inner wall of the holding part 140 facing the accommodation space 141 is made of a material that generates heat due to electromagnetic induction from the electromagnetic induction source 162, the holding part 140 may be heated by induction heating from the electromagnetic induction source 162 to prevent the stick-shaped base material from being heated. It is possible to heat 150.

The stick-type base material 150 is a stick-type member that includes an aerosol source. The aerosol source is heated and atomized to produce an aerosol. The aerosol source may be, for example, a processed product derived from tobacco, or a processed product obtained by molding shredded tobacco or tobacco raw material into granules, sheets, or powder. The aerosol source may also include non-tobacco-derived components produced from plants other than tobacco, such as mint and herbs. As an example, the aerosol source may include a perfume ingredient. If the suction device 100 is a medical inhaler, the aerosol source may include a medicament for inhalation by the patient. The aerosol source is not limited to solids, but may be, for example, polyhydric alcohols such as glycerin and propylene glycol, and liquids such as water. The area of the stick-type base material 150 that includes the aerosol source is accommodated in the accommodation space 141 of the holding part 140 while the stick-type base material 150 is held by the holding part 140 .

Furthermore, at least a portion of the stick-shaped base material 150 protrudes from the opening 142 in a state where the stick-shaped base material 150 is held by the holding part 140. When the user holds one end of the stick-shaped base material 150 protruding from the opening 142 in his or her mouth and sucks it, air flows into the holding part 140 from an air inflow hole (not shown). The inflowing air passes through the accommodation space 141 of the holding part 140 and reaches the inside of the user's mouth together with the aerosol generated from the stick-shaped base material 150.

The electromagnetic induction source 162 is provided further outside the holding part 140 along the insertion direction of the stick-type base material 150. The electromagnetic induction source 162 can generate a fluctuating magnetic field at a position overlapping a part of the holding section 140 by being supplied with alternating current from the power supply section 111 . According to this, the electromagnetic induction source 162 can generate Joule heat in the holding part 140 by causing the holding part 140, which functions as a heat generating part, to generate an eddy current by electromagnetic induction. Furthermore, the electromagnetic induction source 162 can cause the holding section 140, which functions as a heat generating section, to generate heat by generating hysteresis loss due to electromagnetic induction. The heat generated in the holding part 140 generates aerosol by heating the aerosol source included in the stick-type base material 150.

For example, when the sensor unit 112 detects that a predetermined user input has been performed, the suction device 100 supplies power to the electromagnetic induction source 162 and heats the aerosol source included in the stick-shaped base material 150 by induction. , may generate an aerosol. When the temperature of the aerosol source reaches a predetermined temperature, the suction device 100 allows suction by the user. Thereafter, when the sensor unit 112 detects that a predetermined user input has been performed, the suction device 100 may stop supplying power to the electromagnetic induction source 162. Further, the suction device 100 may, for example, supply power to the electromagnetic induction source 162 and generate an aerosol during a period when the sensor unit 112 detects that the user has performed suction.

In the suction device 100 according to the present embodiment, the holding section 140 has a partial region that functions as a heat generating section, and a heat conduction suppressing element that suppresses the heat generated in the partial region from leaking to other regions. including. Note that the heat conduction suppressing element is a partial region that functions as a heat generating portion, or a region in which the amount of heat conduction per unit time is smaller than that of other regions other than the partial region. According to this, the suction device 100 can suppress the heat generated in a partial area of the holding part 140 that functions as a heat generating part from leaking to other areas of the holding part 140, so that the suction device 100 generates an aerosol. energy efficiency can be further improved.

<2. Configuration of holding part>
Next, with reference to FIG. 2, the holding section 140 included in the suction device 100 according to the present embodiment will be described in more detail. FIG. 2 is a schematic cross-sectional view showing the configuration of the holding section 140 included in the suction device 100.

As shown in FIG. 2, the holding portion 140 is provided by joining a first member 171 and a second member 172 to each other.

The first member 171 has a cylindrical structure whose inner surface faces the accommodation space 141 that accommodates the stick-shaped base material 150. The first member 171 functions as a susceptor that heats the stick-type base material 150, and is therefore made of a material that can be heated inductively by a fluctuating magnetic field. For example, the first member 171 may be made of a ferromagnetic material such as iron, nickel, or cobalt that is relatively easily heated by induction, or may be made of an alloy or compound mainly made of these ferromagnetic materials. .

The second member 172 has a cylindrical structure that covers the first member 171 and forms a sealed space 173 between the second member 172 and the outer surface of the first member 171 . The inside of the sealed space 173 is, for example, a vacuum space of 10 ⁻² Pa or less. Thereby, the holding part 140 can suppress conduction of heat from the first member 171 on the inner surface to the second member 172 on the outer surface by vacuum insulation of the sealed space 173. The second member 172 may be made of any material as long as it can be joined to the first member 171.

The first member 171 and the second member 172 form a sealed space 173 by being joined to each other at joints 174 at both ends of each cylindrical structure. Specifically, in the joint portion 174, both ends of the cylindrical structure of the second member 172 are bent twice so that a step is formed toward the outer surface of the first member 171, and the formed step is bent twice. The tip end is joined to the outer surface of the first member 171. Thereby, a sealed space 173 is formed between the first member 171 and the second member 172 in a cylindrical shape so as to cover the first member 171. When the first member 171 and the second member 172 are joined so that a step is formed on the second member 172 side, the holding part 140 is a heat generating part that is in close contact with the first member 171 and the stick-shaped base material 150. It is possible to further improve the quality.

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 so that a step is formed, and then the first member 171 is inserted inside the second member 172 with adhesive or sealant applied to the step. be done. Next, after one end of the first member 171 and the second member 172 coated with adhesive are joined by brazing or the like, the inside of the sealed space 173 is evacuated from the other end coated with the sealant. be done. Thereafter, the other end coated with the sealant is sealed by brazing or the like.

Furthermore, in the holding portion 140, a first extending region L1, a heating region 162S, and a second extending region L2 are provided in the extending direction of the first member 171 and the second member 172.

The heating region 162S is a region on which the fluctuating magnetic field from the electromagnetic induction source 162 is superimposed, and is provided corresponding to at least a portion of the region of the stick-shaped base material 150 that includes the aerosol source. Thereby, the suction device 100 can generate an aerosol from the stick-shaped base material 150 by induction heating the heating region 162S of the first member 171.

That is, the heating region 162S is a region where heat for heating the stick-shaped base material 150 is generated in the extending direction of the accommodation space 141. In the above example in which the first member 171 is heated by induction, the heating region 162S is such that the first member 171 and the fluctuating magnetic field from the electromagnetic induction source 162 are superimposed in the extending direction of the housing space 141. may be an area that generates heat. On the other hand, if a resistance-heated film heater or the like is attached to the inner or outer surface of the first member 171 and the first member 171 is not heated by induction, the heating area 162S is the area to which the heat-generating film heater is attached. It may be.

The first extending region L1 is a region extending from the heating region 162S to the upstream side of the holding section 140, and the second extending region L2 is a region extending from the heating region 162S to the downstream side of the holding section 140. be. Note that the upstream side and the downstream side refer to the upstream side and the downstream side in the air flow that passes through the accommodation space 141 and transports the aerosol generated from the stick-shaped base material 150. That is, the bottom 143 side of the holding part 140 is the upstream side, and the opening 142 side of the holding part 140 is the downstream side. Since the fluctuating magnetic field from the electromagnetic induction source 162 is not superimposed on the first extending region L1 and the second extending region L2, the first member 171 in the first extending region L1 and the second extending region L2 is heated by induction heating. Not done.

In the suction device 100 according to the present embodiment, in order to suppress heat leakage from the heating region 162S to the first extension region L1 and the second extension region L2, the first heat conduction suppressing element 181 and the second heat conduction A restraining element 182 is provided. Specifically, a first heat conduction suppressing element 181 is provided between the heating area 162S and the first extending area L1, and a second heat conducting suppressing element is provided between the heating area 162S and the second extending area L2. 182 is provided.

The first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 are elements that conduct less heat per unit time than the heating region 162S, the first extending region L1, and the second extending region L2. More specifically, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 have a higher capacity per unit time than the heating area 162S, the first extending area L1, and the second extending area L2, and the accommodation space 141. It is an element with a small amount of heat conduction per unit distance in the extending direction. According to this, the holding part 140 prevents heat generated in the heating region 162S from leaking to the first extension region L1 and the second extension region L2 provided corresponding to the region not filled with the aerosol source. can be suppressed. Therefore, the suction device 100 can further improve energy efficiency during aerosol generation.

As an example, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 have a cross-sectional area of a cut plane perpendicular to the extending direction of the holding part 140, which is the heating region 162S, the first extending region L1, and the second extending region L1. It may also include an area smaller than the extension area L2.

More specifically, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 may include a thin portion provided in the first member 171. The thin portion is a region thinner than the thickness of the first member 171 in the first extension region L1 and the second extension region L2, or a region thinner than the thickness of the first member 171 in the heating region 162S. . For example, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 may include a thin portion formed by an annular groove dug into the first member 171 from the sealed space 173 side. Alternatively, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 may include a thin portion formed by a dot pattern of recesses dug into the first member 171 from the sealed space 173 side.

The first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 are configured to include a thin wall portion dug from the sealed space 173 side, so that the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 are configured to include a thin wall portion dug from the sealed space 173 side. The sides can be made smooth. According to this, the suction device 100 can expand the contact area between the first member 171 and the stick-type base material 150, and therefore can further improve the heating efficiency of the stick-type base material 150. In addition, the suction device 100 can more easily clean the accommodation space 141 that the inner surface of the first member 171 faces.

In addition, as another example, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 are made of a material whose thermal conductivity is lower than that of the heating region 162S, the first extending region L1, and the second extending region L2. It may be composed of. For example, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 may be made of organic resin or the like. On the other hand, when the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 are made of a different metal material from the heating region 162S, the first extending region L1, and the second extending region L2, different metallic materials Electrolytic corrosion may occur during the generation of aerosol at the joint surfaces. In order to prevent such electrolytic corrosion, it is desirable that a corrosion-preventing coating be applied to the inside of the first member 171.

Here, the configuration of the stick-shaped base material 150 will be explained with reference to FIG. 3. FIG. 3 is a schematic diagram showing an example of the configuration of the stick-type base material 150.

As shown in FIG. 3, the stick-type base material 150 has a filling region 151, a paper tube region 152, and a cooling region 153 from an upstream end Eu that is one end of the elongated shape toward a downstream end Ed that is the other end. and in order. The stick-type base material 150 is inserted into the holding part 140 from the upstream end Eu, and by having the user add the downstream end Ed, the user can inhale the aerosol.

The filling region 151 is, for example, a region filled with an aerosol source that is a processed product derived from tobacco. The stick-type base material 150 can generate an aerosol by heating an aerosol source filled in the filling region 151. The paper tube area 152 is a hollow area on the inside, and is provided to guide the aerosol generated in the filling area 151 to the cooling area 153. The cooling area 153 is an area that includes a filter that prevents the aerosol source that has fallen from the filling area 151 from being inhaled by the user, and cools the aerosol to a temperature that allows it to be inhaled. The paper tube region 152 and the cooling region 153 are unfilled regions that are not filled with an aerosol source that is a processed product derived from tobacco.

Furthermore, the stick-type base material 150 may further include a plug region on the upstream end Eu side of the filling region 151. The plug region is a region including a filter that prevents the aerosol source filled in the filling region 151 from falling off from the upstream end Eu. Moreover, the plug region can suppress the aerosol generated in the filling region 151 from flowing back toward the upstream end Eu instead of the downstream end Ed.

The heating region 162S described above is provided at least corresponding to the filling region 151 of the stick-type base material 150 in order to induction-heat the filling region 151 of the stick-type base material 150. On the other hand, the above-described first extension region L1 and second extension region L2 are provided corresponding to at least the unfilled region including the paper tube region 152, the cooling region 153, and the plug region of the stick-type base material 150. Therefore, since the filling area 151 is provided on the upstream side of the stick-type base material 150, the heating area 162S corresponding to the filling area 151 is provided on the upstream side of the holding part 140. Thereby, the width of the first extending region L1 becomes narrower than the width of the second extending region L2.

When the width of the first extension region L1 is narrower than the width of the second extension region L2, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 are configured such that the amount of heat conduction per unit time is different from each other. may be provided. That is, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 may be provided in mutually different manners.

Specifically, the first heat conduction suppressing element 181 may be provided so that the amount of heat conduction per unit time is smaller than that of the second heat conduction suppressing element 182, making it difficult to conduct heat. Since the first extension region L1 is narrower than the second extension region L2 and has a smaller heat capacity, the temperature tends to rise due to the conducted heat. Therefore, the first extension region L1 is provided so that heat is less conductive than the second extension region L2 by the first heat conduction suppressing element 181, so that the influence of the conducted heat can be further reduced.

For example, the first heat conduction suppressing element 181 may be provided so as to have a wider width in the extending direction of the holding portion 140 than the second heat conduction suppressing element 182. According to this, the first heat conduction suppressing element 181 increases the heat conduction efficiency from the second heat conduction suppressing element 182 to the second extending area L2 by increasing the width of the element. It is possible to suppress the heat conduction efficiency more than that of .

Further, when the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 are configured to include a thin wall portion, the first heat conduction suppressing element 181 has a thinner wall area than the second heat conduction suppressing element 182. , or may be provided so that the amount of digging becomes large. According to this, the first heat conduction suppressing element 181 has a smaller cross-sectional area than the second heat conduction suppressing element 182, so that the amount of heat conduction can be made smaller than that of the second heat conduction suppressing element 182. Note that if the first heat conduction suppressing element 181 can have a smaller amount of heat conduction than the second heat conduction suppressing element 182, at least one of the number of thin-walled parts, the size, or the amount of digging will become larger. It may be provided as follows.

According to the above configuration, in the suction device 100 according to the present embodiment, the heat generated in the first member 171 of the heating region 162S is conducted through the first member 171 to the first extending region L1 and the second extending region. It is possible to suppress leakage to L2. Therefore, the suction device 100 can more efficiently cause the heat generated in the heating region 162S to act on the filling region 151 of the stick-type base material 150, thereby improving energy efficiency during aerosol generation.

<3. Specific example>
Next, a specific example of the holding section 140 according to the present embodiment will be described with reference to FIGS. 4 and 5. FIG. 4 is an explanatory diagram showing the appearance and cross section of the holding portion 140A according to the first specific example. FIG. 5 is an explanatory diagram showing the appearance and cross section of the holding portion 140B according to the second specific example.

As shown in FIG. 4, the holding portion 140A according to the first specific example is constructed by joining a first member 171 and a second member 172 to each other at a joining portion 174. Specifically, both ends of the cylindrical structure of the second member 172 are bent twice so that a step is formed toward the outer surface of the first member 171, and the end beyond the formed step is bent. A joint portion 174 is formed by being joined to the outer surface of the first member 171 . Thereby, a sealed space 173 that performs vacuum insulation is formed between the first member 171 and the second member 172.

In the holding portion 140A, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 are configured as grooves formed in the first member 171 from the sealed space 173 side. Specifically, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 are grooves that are annularly dug in the circumferential direction of the first member 171 near the joint portions 174 at both ends of the holding portion 140A. provided. According to this, the holding part 140A according to the first specific example can suppress the heat generated in the first member 171 from leaking along the extending direction of the holding part 140A. Note that at this time, the first heat conduction suppressing element 181 may be provided as a groove that is dug deeper than the second heat conduction suppressing element 182 (i.e., a thin part where the first member 171 is thinner). .

As shown in FIG. 5, the holding part 140B according to the second specific example is constructed by joining a first member 171 and a second member 172 to each other at a joining part 174. Specifically, both ends of the cylindrical structure of the first member 171 are bent twice so that a step is formed toward the inner surface of the second member 172, and the end beyond the formed step is bent. A joint portion 174 is configured by being joined to the inner surface of the second member 172. Thereby, a sealed space 173 that performs vacuum insulation is formed between the first member 171 and the second member 172.

In the holding portion 140B, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 are configured as grooves formed in the first member 171 from the sealed space 173 side. Specifically, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 are grooves that are annularly dug in the circumferential direction of the first member 171 near the joint portions 174 at both ends of the holding portion 140A. provided. According to this, the holding part 140B according to the second specific example can suppress the heat generated in the first member 171 from leaking along the extending direction of the holding part 140B. Note that at this time, the first heat conduction suppressing element 181 may be provided as a groove that is dug deeper than the second heat conduction suppressing element 182 (i.e., a thin part where the first member 171 is thinner). .

<4. Modified example>
(4.1. First modification)
Next, a first modification of the suction device 100 according to the present embodiment will be described with reference to FIGS. 6 and 7.

As shown in FIGS. 6 and 7, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 may be configured with a plurality of grooves or recesses. FIG. 6 is a schematic diagram showing an example of a first modification of the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182. FIG. 7 is a schematic diagram showing another example of the first modification of the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182.

As shown in FIG. 6, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 may be composed of a plurality of grooves provided along the circumferential direction of the first member 171. As shown in FIG. 7, the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 may be configured with a plurality of dot pattern-shaped recesses arranged along the circumferential direction of the first member 171. .

Note that when the width of the first extension region L1 is narrower than the width of the second extension region L2, the first heat conduction suppressing element 181 is configured such that the amount of heat conduction is lower than that of the second heat conduction suppressing element 182. may be provided. In such a case, the first heat conduction suppressing element 181 may be provided so as to include a greater number of grooves or recesses than the second heat conduction suppressing element 182.

(4.2. Second modification)
Next, with reference to FIG. 8, a second modification of the suction device 100 according to the present embodiment will be described. FIG. 8 is a schematic cross-sectional view showing the configuration of a holding portion 140A according to a second modification.

As shown in FIG. 8, the holding part 140A differs from the holding part 140 shown in FIG. 2 in that it further includes a heat insulating member 175.

The heat insulating member 175 is provided to cover the outer surface of the second member 172 and suppresses conduction of heat from the second member 172 to the casing of the suction device 100. The heat insulating member 175 may be, for example, a sheet-like member that is wound around the second member 172 along the outer surface of the second member 172 while being adhered to the second member 172, or a cylindrical member into which the second member 172 can be inserted. It may be a member.

The heat insulating member 175 may be composed of a single member. For example, the heat insulating member 175 may be constructed by wrapping a single member around the second member 172 so as to cover the entire outer surface of the second member 172 including the joints 174 at both ends. Further, the heat insulating member 175 may be composed of a plurality of members. For example, the heat insulating member 175 is composed of three members: an annular member that covers the joint 174 on the downstream side, an annular member that covers the joint 174 on the upstream side, and a cylindrical member that covers the outer surface of the second member 172. Good too.

The heat insulating member 175 may be, for example, a laminate including a porous sheet of foam or felt having heat insulating properties, an airgel sheet, or a laminate including an aluminum sheet having heat reflective properties. Good too. Further, the heat insulating member 175 may be a laminate including a porous sheet, an airgel sheet, or an aluminum sheet.

According to the second modification, the holding portion 140A can further suppress conduction of heat for heating the stick-shaped base material 150 to the casing of the suction device 100 using the heat insulating member 175. Therefore, the holding portion 140A can further reduce the possibility that the user holding the suction device 100 will feel uncomfortable.

(4.3. Other variations)
In the embodiment described above, the electromagnetic induction source 162 has been described as being composed of one induction coil, but the present invention is not limited to such an example. For example, the electromagnetic induction source 162 may be comprised of a plurality of spaced apart induction coils.

In the first member 171, the heating region 162S is also divided into a plurality of regions corresponding to each of the plurality of induction coils spaced apart from each other. That is, in the first member 171, the heating regions 162S on which the varying magnetic fields from each of the plurality of induction coils are superimposed are separated from each other and generate heat. In such a case, a heat conduction suppressing element similar to the first heat conduction suppressing element 181 and the second heat conduction suppressing element 182 may be provided between each of the plurality of heating regions 162S spaced apart from each other. According to this, since the holding part 140 can suppress the diffusion of heat from the heating region 162S, it is possible to more intensively heat a part of the stick-shaped base material 150 with each induction coil. It is.

Furthermore, in the above embodiment, the holding section 140 is described as having the sealed space 173 that performs vacuum insulation, but the present invention is not limited to such an example. For example, the holding part 140 does not need to include the sealed space 173 that performs vacuum insulation. Specifically, the inside of the sealed space 173 does not need to be in a vacuum state, and the first member 171 and the second member 172 do not need to be joined to each other.

Furthermore, in the embodiment described above, the stick-shaped base material 150 was described as being heated by the first member 171 that was induction-heated in a fluctuating magnetic field, but the present invention is not limited to such an example. For example, the stick-type base material 150 may be heated by a resistance heating section (a film heater including wiring that generates resistance heat) attached to the inner or outer surface of the first member 171.

Although preferred embodiments of the present invention have been described above in detail with reference to the accompanying drawings, the present invention is not limited to such examples. It is clear that a person with ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. It is understood that these also fall within the technical scope of the present invention.

Note that the following configurations also belong to the technical scope of the present invention.
(1)
a containment space containing an aerosol-generating substrate including an aerosol source;
a heating section that extends along the accommodation space and heats the aerosol-generating base material;
Equipped with
The heating section is
a heating region provided in the extending direction of the heating section;
an extending region provided in an extending direction of the heating section as a region different from the heating region;
a heat conduction suppressing element that is provided between the heating region and the extension region and has a smaller amount of heat conduction per unit time than the heating region and the extension region;
An aerosol generation device having:
(2)
The aerosol generation device according to (1), wherein the heat conduction suppressing element includes a thin wall portion provided in the heating section.
(3)
The extending region includes a first extending region provided at one end of the heating region and a second extending region provided at the other end of the heating region,
The heat conduction suppressing element includes a first heat conduction suppressing element provided between the first extension region and the heating region, and a second heat conduction suppressing element provided between the second extension region and the heating region. The aerosol generation device according to (2) above, including a conduction suppressing element.
(4)
The aerosol generation device according to (3), wherein the amount of heat conduction per unit time of the first heat conduction suppressing element is different from the amount of heat conduction per unit time of the second heat conduction suppressing element.
(5)
The first heat conduction suppressing element and the second heat conduction suppressing element are different from each other in at least one of the width in the extending direction, the area of the included thin part, or the amount of digging. 4) The aerosol generation device according to item 4).
(6)
The aerosol generation device according to (4) or (5), wherein the amount of heat conduction per unit time of the first heat conduction suppressing element is smaller than the amount of heat conduction per unit time of the second heat conduction suppressing element. .
(7)
The one end side is on the upstream side of the air flow passing through the aerosol generation base material,
The aerosol generation device according to any one of (3) to (6), wherein the other end side is a downstream side opposite to the upstream side.
(8)
The aerosol generation device according to any one of (1) to (7), wherein the heating area is provided corresponding to at least a part of the filling area filled with the aerosol source of the aerosol generation base material. .
(9)
The aerosol-generating substrate further includes an unfilled region different from the filled region,
The aerosol generation device according to (8), wherein the extension region is provided corresponding to at least a portion of the unfilled region.
(10)
The aerosol generation device according to any one of (1) to (9), wherein the heating section is provided on an inner surface of a cylindrical member containing the accommodation space.
(11)
The aerosol generation device according to (10), wherein the heat conduction suppressing element is annularly provided along the circumferential direction of the cylindrical member.
(12)
The cylindrical member has a vacuum insulation structure,
The aerosol generation device according to (10) or (11), wherein the heating section is induction heated by a fluctuating magnetic field.
(13)
The heat conduction suppressing element includes a thin part provided in the heating part,
The aerosol generation device according to any one of (10) to (12), wherein the thin portion is formed by thinning the heating portion from a side opposite to a side facing the accommodation space. Device.
(14)
According to any one of (1) to (13), the heat conduction suppressing element is made of a material having a lower thermal conductivity than at least one of the heating region or the extension region. The aerosol generation device described.
(15)
an aerosol-generating substrate comprising an aerosol source;
an aerosol generation device that heats the aerosol generation base material;
including;
The aerosol generation device includes:
a housing space that accommodates the aerosol-generating base material;
a heating section that extends along the accommodation space and heats the aerosol-generating base material;
Equipped with
The heating section is
a heating region provided in the extending direction of the heating section;
an extending region provided in an extending direction of the heating section as a region different from the heating region;
a heat conduction suppressing element that is provided between the heating region and the extension region and has a smaller amount of heat conduction per unit time than the heating region and the extension region;
An aerosol generation system with

100 Suction device 111 Power supply section 112 Sensor section 113 Notification section 114 Storage section 115 Communication section 116

Control section

140, 140A, 140B Holding section 141 Accommodation space 142 Opening 143 Bottom section 150 Stick type base material 162 Electromagnetic induction source 162S Heating region 171 First Member 172 Second member 173 Sealed space 174 Joint portion 181 First heat conduction suppressing element 182 Second heat conduction suppressing element L1 First extending region L2 Second extending region

Claims

a containment space containing an aerosol-generating substrate including an aerosol source;
a heating section that extends along the accommodation space and heats the aerosol-generating base material;
Equipped with
The heating section is
a heating region provided in the extending direction of the heating section;
an extending region provided in an extending direction of the heating section as a region different from the heating region;
a heat conduction suppressing element that is provided between the heating region and the extension region and has a smaller amount of heat conduction per unit time than the heating region and the extension region;
An aerosol generation device having:
The aerosol generation device according to claim 1, wherein the heat conduction suppressing element includes a thin wall portion provided in the heating section.
The extending region includes a first extending region provided at one end of the heating region and a second extending region provided at the other end of the heating region,
The heat conduction suppressing element includes a first heat conduction suppressing element provided between the first extension region and the heating region, and a second heat conduction suppressing element provided between the second extension region and the heating region. 3. The aerosol generation device according to claim 2, comprising a conduction suppression element.
The aerosol generation device according to claim 3, wherein the amount of heat conduction per unit time of the first heat conduction suppressing element is different from the amount of heat conduction per unit time of the second heat conduction suppressing element.
The first heat conduction suppressing element and the second heat conduction suppressing element are different from each other in at least one of the width in the extending direction, the area of the included thin part, or the amount of digging. 4. The aerosol generation device according to 4.
The aerosol generation device according to claim 4 or 5, wherein the amount of heat conduction per unit time of the first heat conduction suppressing element is smaller than the amount of heat conduction per unit time of the second heat conduction suppressing element.
The one end side is on the upstream side of the air flow passing through the aerosol generation base material,
The aerosol generation device according to any one of claims 3 to 6, wherein the other end side is a downstream side opposite to the upstream side.
The aerosol generation device according to any one of claims 1 to 7, wherein the heating area is provided corresponding to at least a part of a filling area filled with the aerosol source of the aerosol generation base material.
The aerosol-generating substrate further includes an unfilled region different from the filled region,
The aerosol generation device according to claim 8, wherein the extension region is provided corresponding to at least a portion of the non-filled region.
The aerosol generation device according to any one of claims 1 to 9, wherein the heating section is provided on an inner surface of a cylindrical member containing the accommodation space.
The aerosol generation device according to claim 10, wherein the heat conduction suppressing element is annularly provided along the circumferential direction of the cylindrical member.
The cylindrical member has a vacuum insulation structure,
The aerosol generation device according to claim 10 or 11, wherein the heating section is induction heated by a fluctuating magnetic field.
The heat conduction suppressing element includes a thin part provided in the heating part,
The aerosol generation device according to any one of claims 10 to 12, wherein the thin portion is formed by thinning the heating portion from a side opposite to a side facing the accommodation space.
The aerosol according to any one of claims 1 to 13, wherein the heat conduction suppressing element is made of a material having a lower thermal conductivity than at least one of the heating region or the extension region. generator.
an aerosol-generating substrate comprising an aerosol source;
an aerosol generation device that heats the aerosol generation base material;
including;
The aerosol generation device includes:
a housing space that accommodates the aerosol-generating base material;
a heating section that extends along the accommodation space and heats the aerosol-generating base material;
Equipped with
The heating section is
a heating region provided in the extending direction of the heating section;
an extending region provided in an extending direction of the heating section as a region different from the heating region;
a heat conduction suppressing element that is provided between the heating region and the extension region and has a smaller amount of heat conduction per unit time than the heating region and the extension region;
An aerosol generation system with