Suction device

Abstract

[Problem] To provide a mechanism capable of further improving the quality of user experience. [Solution] A suction device includes: a cylindrical body capable of storing a base material containing an aerosol source; an adhesive layer arranged outside a side wall of the cylindrical body and bonded to members arranged on both inner and outer sides; an electrically insulating layer arranged outside the adhesive layer and bonded to a side wall of the cylindrical body by the adhesive layer; a heat generating part arranged outside the insulating layer; and a conductive part arranged outside the insulating layer and conducting power to the heat generating part. Heat transfer property of a first adhesive layer corresponding to a position of the heat generating part in the adhesive layer is higher than heat transfer property of a second adhesive layer corresponding to a position of the conductive part in the adhesive layer.

Description

suction device

[0001] The present disclosure relates to aspiration devices.

[0002] Inhalation devices that generate substances to be inhaled by users are widely used. For example, inhalation devices generate aerosols imparted with flavor components using a substrate containing an aerosol source for generating aerosols and a flavor source for imparting flavor components to the generated aerosol. Users can enjoy the flavor by inhaling the aerosols imparted with flavor components generated by the inhalation device. The action of a user inhaling the aerosol is hereinafter also referred to as a puff or puffing action. An example of a device classified as an inhalation device is a heated tobacco product, which is used instead of a so-called cigarette. Note that a heated tobacco product is an inhalation device that generates an aerosol by heating an aerosol source.

[0003] Various technologies relating to heated tobacco products have been developed. For example, Patent Document 1 below discloses a technology in which a coating of an electrically insulating material is formed on the surface of a heating chamber having an opening for receiving a substrate, and a coating of an electrically conductive material that acts as a Joule heater is further formed thereon.

[0004] International Publication No. 2022 / 167261

[0005] However, the technology disclosed in the above-mentioned Patent Document 1 has only recently been developed, and there is still room for improvement in various respects.

[0006] Therefore, the present disclosure has been made in consideration of the above problems, and an object of the present disclosure is to provide a mechanism that can further improve the quality of the user experience.

[0007] In order to solve the above problems, according to one aspect of the present disclosure, there is provided a suction device comprising: a cylindrical body capable of accommodating a substrate containing an aerosol source; an adhesive layer disposed on the outside of a side wall of the cylindrical body and adhering to members disposed on both the inside and outside; an electrically insulating layer disposed on the outside of the adhesive layer and adhered to the side wall of the cylindrical body by the adhesive layer; a heat generating portion disposed on the outside of the insulating layer; and a conductive portion disposed on the outside of the insulating layer and conducting power to the heat generating portion, wherein the heat conductivity of a first adhesive layer of the adhesive layer corresponding to the position of the heat generating portion is higher than the heat conductivity of a second adhesive layer of the adhesive layer corresponding to the position of the conductive portion.

[0008] The first adhesive layer may be uniformly configured, and the second adhesive layer may be sparsely configured.

[0009] The second adhesive layer may be configured in a mesh shape.

[0010] The second adhesive layer may be configured in a dot pattern.

[0011] The second adhesive layer may be configured to be thinner than the first adhesive layer.

[0012] The first adhesive layer and the second adhesive layer may be configured to be spaced apart from each other.

[0013] One end of the conductive portion may be connected to the heat generating portion, and the other end of the conductive portion may be connected to a conductor that supplies power to the heat generating portion, and the portion of the second adhesive layer that corresponds to the contact point between the conductive portion and the conductor and the portion of the second adhesive layer that corresponds to other than the contact point of the conductive portion may be configured to be separated from each other.

[0014] The first adhesive layer and the second adhesive layer may be made of the same material.

[0015] The edges of the adhesive layer may be tapered.

[0016] The side wall of the cylindrical body may include a plurality of flat plates, and at least a portion of the adhesive layer, the insulating layer, the heat generating portion, and the conductive portion may be arranged outside the flat plates.

[0017] The first adhesive layer may be disposed so as to cover an outer periphery of the side wall of the cylindrical body, and the thermal conductivity of the first adhesive layer may be higher than the thermal conductivity of the cylindrical body.

[0018] The second adhesive layer may have lower thermal conductivity than the cylindrical body.

[0019] As described above, the present disclosure provides a mechanism that can further improve the quality of the user experience.

[0020] FIG. 5 is a schematic diagram showing an example of the configuration of a suction device. FIG. 6 is a diagram showing an example of the configuration of a heating system of a suction device according to an embodiment of the present disclosure. FIG. 7 is a diagram showing the cross section of the heating system shown in FIG. 2 cut along the cutting line A-A as viewed from above. FIG. 8 is a diagram showing the configuration of a storage section of the heating system shown in FIG. 2. FIG. 9 is a diagram showing a state in which an adhesive layer is laminated on the storage section shown in FIG. 4. FIG. 10 is a diagram showing a state in which an electrical insulating layer is laminated on the adhesive layer shown in FIG. 5. FIG. 11 is a diagram showing another example of the configuration of an adhesive layer. FIG. 12 is a diagram showing another example of the configuration of an adhesive layer. FIG. 13 is a diagram showing another example of the configuration of an adhesive layer. FIG. 14 is a diagram showing another example of the configuration of an adhesive layer.

[0021] Preferred embodiments of the present disclosure will be described in detail below 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 description will be omitted.

[0022] 1. Configuration Example of Inhalation Device The inhalation device is a device that generates a substance to be inhaled by a user. In the following description, the substance generated by the inhalation device is described as an aerosol. Alternatively, the substance generated by the inhalation device may be a gas.

[0023] 1 is a schematic diagram showing an example of the configuration of a suction device. As shown in Fig. 1, a suction device 100 according to this example configuration includes a power supply unit 111, a sensor unit 112, a notification unit 113, a memory unit 114, a communication unit 115, a control unit 116, a heating unit 40, a storage unit 50, and a heat insulating unit 70.

[0024] The power supply unit 111 stores electric power and supplies electric power to each component of the suction device 100 under the control of the control unit 116. The power supply unit 111 may be configured by, for example, a rechargeable battery such as a lithium ion secondary battery.

[0025] The sensor unit 112 acquires various types of information related to the suction device 100. As one example, the sensor unit 112 is configured with a pressure sensor such as a condenser microphone, a flow rate sensor, a temperature sensor, or the like, and acquires values ​​associated with suction by the user. As another example, the sensor unit 112 is configured with an input device such as a button or a switch that accepts information input from the user.

[0026] The notification unit 113 notifies the user of information. The notification unit 113 is configured by, for example, a light emitting device that emits light, a display device that displays an image, a sound output device that outputs sound, or a vibration device that vibrates.

[0027] The storage unit 114 stores various types of information for the operation of the suction device 100. The storage unit 114 is configured by a non-volatile storage medium such as a flash memory, for example.

[0028] The communication unit 115 is a communication interface capable of performing communication conforming to any wired or wireless communication standard, such as Wi-Fi (registered trademark), Bluetooth (registered trademark), BLE (Bluetooth Low Energy (registered trademark)), NFC (Near Field Communication), or LPWA (Low Power Wide Area).

[0029] 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 is realized by an electronic circuit such as a CPU (Central Processing Unit) or a microprocessor.

[0030] The storage unit 50 is a member configured to be able to store the stick-shaped substrate 150. More specifically, the storage unit 50 has an internal space 80 and holds the stick-shaped substrate 150 while storing a portion of the stick-shaped substrate 150 in the internal space 80. The storage unit 50 has an opening 52 that connects the internal space 80 to the outside, and stores the stick-shaped substrate 150 inserted into the internal space 80 through the opening 52. For example, the storage unit 50 is a cylindrical body with the opening 52 and a bottom wall 56 at both ends, and defines a columnar internal space 80. An air flow path that supplies air to the internal space 80 may be connected to the storage unit 50. An air inlet, which is an air inlet to the air flow path, is arranged, for example, on a side surface of the suction device 100. An air outlet, which is an air outlet from the air flow path to the internal space 80, is arranged, for example, on the bottom wall 56.

[0031] The stick-shaped substrate 150 includes a substrate portion 151 and a mouthpiece portion 152. The substrate portion 151 includes an aerosol source. The aerosol source includes a tobacco-derived or non-tobacco-derived flavor component. When the inhalation device 100 is a medical inhaler such as a nebulizer, the aerosol source may include a medicament. The aerosol source may be, for example, a liquid such as a polyhydric alcohol, such as glycerin or propylene glycol, or water, containing a tobacco-derived or non-tobacco-derived flavor component, or a solid containing a tobacco-derived or non-tobacco-derived flavor component. When the stick-shaped substrate 150 is held in the storage portion 50, at least a portion of the substrate portion 151 is housed in the internal space 80, and at least a portion of the mouthpiece portion 152 protrudes from the opening 52. When a user holds the mouthpiece portion 152 protruding from the opening 52 in their mouth and inhales, air flows into the internal space 80 via an air flow path (not shown) and reaches the user's mouth along with the aerosol generated from the substrate portion 151.

[0032] The heating unit 40 generates aerosol by heating the aerosol source and atomizing the aerosol source. In the example shown in FIG. 1 , the heating unit 40 is configured in a film shape and is arranged to cover the outer periphery of the storage unit 50. When the heating unit 40 generates heat, the substrate unit 151 of the stick-shaped substrate 150 is heated from the outer periphery, generating aerosol. The heating unit 40 generates heat when power is supplied from the power supply unit 111. As an example, power may be supplied when the sensor unit 112 detects that the user has started inhaling and / or that predetermined information has been input. Power supply may be stopped when the sensor unit 112 detects that the user has stopped inhaling and / or that predetermined information has been input.

[0033] The heat insulating section 70 prevents heat transfer from the heating section 40 to other components. For example, the heat insulating section 70 is made of a vacuum heat insulating material, an aerogel heat insulating material, or the like.

[0034] The above describes an example of the configuration of the suction device 100. Of course, the configuration of the suction device 100 is not limited to the above, and various configurations such as those exemplified below may be used.

[0035] As an example, the storage unit 50 may include an opening / closing mechanism such as a hinge that opens and closes a portion of the outer shell that forms the internal space 80. The storage unit 50 may then open and close the outer shell to store the stick-shaped substrate 150 inserted into the internal space 80 while clamping it. In this case, the heating unit 40 may be provided at the clamping location in the storage unit 50, and may heat the stick-shaped substrate 150 while pressing it.

[0036] The intake and exhaust form of the container 50 may be a so-called counterflow. In this case, as the user puffs, air flows into the internal space 80 from the opening 52. The air then passes through the inside of the stick-shaped substrate 150 from the tip of the stick-shaped substrate 150 and reaches the user's mouth together with the aerosol.

[0037] The stick-shaped substrate 150 is an example of an aerosol-generating substrate containing an aerosol source. The inhalation device 100 and the stick-shaped substrate 150 work together to generate an aerosol that is inhaled by a user. Therefore, the combination of the inhalation device 100 and the stick-shaped substrate 150 may be considered an aerosol-generating system.

[0038] 2. Technical Features An example of the configuration of the heating system 30 of the suction device 100 according to this embodiment will be described below with reference to Figures 2 to 6. The heating system 30 is a system made up of components involved in heating the stick-shaped substrate 150. The heating system 30 includes at least a heating unit 40 and a storage unit 50.

[0039] Fig. 2 is a diagram showing an example of the configuration of the heating system 30 of the suction device 100 according to this embodiment. Fig. 3 is a diagram showing the cross section of the heating system 30 shown in Fig. 2 cut along the cutting line A-A and viewed from above. As shown in Figs. 2 and 3, the heating system 30 is configured by laminating an adhesive layer 60 and a heating unit 40 on a housing unit 50. The heating unit 40 includes an electrical insulating layer 41, resistance heating layers 42 (42a and 42b), and electrical contacts 43.

[0040] FIG. 4 is a diagram showing the configuration of the housing 50 of the heating system 30 shown in FIG. 2. FIG. 5 is a diagram showing the state in which an adhesive layer 60 is laminated on the housing 50 shown in FIG. 4. FIG. 6 is a diagram showing the state in which an electrical insulating layer 41 is laminated on the adhesive layer 60 shown in FIG. 5. FIGS. 4 to 6 can also be interpreted as showing the heating system 30 in the middle of its manufacture. The heating system 30 shown in FIG. 2 is constructed by laminating the adhesive layer 60 on the housing 50 shown in FIG. 4 as shown in FIG. 5, then laminating the electrical insulating layer 41 as shown in FIG. 6, and then laminating the resistance heating layer 42 and electrical contacts 43 as shown in FIG. 2.

[0041] 3 and 4, the storage unit 50 is a cylindrical body having side walls 54 (54a to 54c), a bottom wall 56 connected to one end of the side walls 54, and an opening 52 provided at the other end of the side walls 54. The stick-shaped substrate 150 is inserted into the storage unit 50 through the opening 52 and is stored in an internal space 80 surrounded by the side walls 54 and the bottom wall 56. The storage unit 50 is preferably made of a metal with high thermal conductivity, such as SUS (stainless steel). This allows the stick-shaped substrate 150 to be heated efficiently.

[0042] The stick-shaped substrate 150 is inserted and removed along the axial direction of the cylindrical storage unit 50. Within the axial direction, the direction in which the stick-shaped substrate 150 is inserted is also referred to as "downward," and the direction in which the stick-shaped substrate 150 is removed is also referred to as "upward." The axial direction is also referred to as the up-down direction. The up-down direction may be the longitudinal direction of the storage unit 50. Among directions perpendicular to the up-down direction, the direction toward the central axis of the storage unit 50 is also referred to as "inward," and the direction away from the central axis is also referred to as "outward."

[0043] 3, a through-hole 56a may be provided in the bottom wall 56. An air flow path that supplies air to the internal space 80 is connected to the through-hole 56a.

[0044] 3 and 4 , the side walls 54 include two side walls 54a having flat outer and inner surfaces, four side walls 54b having outwardly curved outer and inner surfaces, and two side walls 54c having outwardly curved outer and inner surfaces. The side walls 54 may have a uniform thickness. For example, the side wall 54a may be a flat plate. The side walls 54b and 54c may be outwardly curved plates.

[0045] As shown in Figure 3, the two side walls 54a are positioned opposite each other. The two side walls 54c are also positioned opposite each other. The four side walls 54b are positioned between the side walls 54a and 54c. The distance between the two opposing side walls 54a is smaller than the width of the stick-shaped substrate 150 inserted into the storage unit 50. With this configuration, the two opposing side walls 54a can hold the stick-shaped substrate 150 stored in the storage unit 50 while pressing it from the outside.

[0046] 2 and 3 , the heating unit 40 is disposed outside the storage unit 50. Therefore, when the heating unit 40 generates heat, the storage unit 50 is heated from the outside, and the stick-shaped substrate 150 is heated by heat transfer from the storage unit 50. This makes it possible to generate an aerosol from the stick-shaped substrate 150.

[0047] 3, the two heating units 40 are disposed on the outer sides of the two side walls 54a. With this configuration, the heating system 30 can efficiently heat the stick-shaped substrate 150 at the pressed locations while pressing the stick-shaped substrate 150 so as to sandwich it between the two side walls 54a.

[0048] 2, the heating unit 40 has a heat generating region 44 and a non-heat generating region 45. The heat generating region 44 is a region that generates heat when a current flows through the heating unit 40. The non-heat generating region 45 is a region that does not generate heat or generates very little heat when a current flows through the heating unit 40.

[0049] The above has described the configuration of the accommodation unit 50 and the general configuration of the heating unit 40. Next, the configuration of the adhesive layer 60 used to laminate the heating unit 40 to the accommodation unit 50 and the detailed configuration of the heating unit 40 will be described.

[0050] 2 to 6, an adhesive layer 60 is laminated on the outside of the sidewall 54 of the accommodation unit 50. In particular, as shown in FIGS. 3 and 5, a first adhesive layer 61, which is a portion of the adhesive layer 60 corresponding to the position of the heat generating region 44 (i.e., the portion on which the heat generating region 44 of the heating unit 40 is laminated), is laminated so as to cover the entire outer periphery of the accommodation unit 50, including the sidewalls 54a, 54b, and 54c. On the other hand, as shown in FIG. 5, a second adhesive layer 62, which is a portion of the adhesive layer 60 corresponding to the position of the non-heat generating region 45 (i.e., the portion on which the non-heat generating region 45 of the heating unit 40 is laminated), is laminated only on the outside of the sidewall 54a.

[0051] The adhesive layer 60 is a member that adheres to components arranged on both the inside and outside, and bonds the storage unit 50 and the heating unit 40. In the example shown in FIGS. 2 to 6 , the adhesive layer 60 bonds the side wall 54a laminated on the inside of the adhesive layer 60 to the electrical insulating layer 41 laminated on the outside of the adhesive layer 60. Examples of materials that can be used to form the adhesive layer 60 include silver or a silver compound. The adhesive layer 60 may be laminated using a vapor deposition process or a printing process. The vapor deposition process is a process in which a substance is evaporated onto the surface of a target object to form a thin film coating. The printing process is a process in which a liquid is sprayed onto the surface of a target object to form a thin film coating.

[0052] 2 to 6, it is desirable that at least the first adhesive layer 61 is made of a conductive material. With this configuration, as will be described later, electricity can be passed through the heating unit 40 via the first adhesive layer 61.

[0053] The first adhesive layer 61 and the second adhesive layer 62 may be made of the same material. This configuration makes it easier to stack the adhesive layers 60, thereby improving the manufacturing accuracy of the suction device 100.

[0054] As shown in Fig. 6, an electrical insulating layer 41 is laminated on the outer side of the side wall 54 of the storage section 50. In particular, the electrical insulating layer 41 is laminated on the portion of the side wall 54a where the adhesive layer 60 is laminated, and is adhered to the side wall 54a of the storage section 50 by the adhesive layer 60. The electrical insulating layer 41 is a member having predetermined electrical insulating properties. Examples of materials that constitute the electrical insulating layer 41 include glass and ceramic. The electrical insulating layer 41 may be laminated using a vapor deposition process or a printing process.

[0055] As shown in FIGS. 2 and 3 , the resistive heating layer 42 is laminated on the outside of the electrical insulation layer 41. Specifically, the resistive heating layer 42 forms a single wire on the electrical insulation layer 41. The resistive heating layer 42 is made of a heat-resistant and electrically conductive material. When a current flows through the resistive heating layer 42, the resistive heating layer 42 generates Joule heat according to its electrical resistance. Examples of materials that can be used to form the resistive heating layer 42 include metallic materials such as silver, platinum, and SUS, as well as non-metallic materials such as silicon carbide. The resistive heating layer 42 may be laminated using a vapor deposition process or a printing process.

[0056] The resistive heating layer 42a arranged in the heat-generating region 44 is configured to have a higher electrical resistance than the resistive heating layer 42b arranged in the non-heat-generating region 45. As an example, as shown in FIG. 2, the resistive heating layer 42a is configured to be thicker than the resistive heating layer 42b. The electrical resistance of the resistive heating layer 42a may be 10 times or more the electrical resistance of the resistive heating layer 42b. With this configuration, the heating unit 40 generates strong heat in the heat-generating region 44 and generates no or very little heat in the non-heat-generating region 45. The resistive heating layer 42a is an example of a heat-generating portion that generates heat. The resistive heating layer 42b and the electrical contact 43 are examples of conductive portions that conduct power to the heat-generating portion.

[0057] As shown in FIG. 2 , the electrical contact 43 is laminated on the electrical insulation layer 41 and connected to the lower end of the resistance heating layer 42. The electrical contact 43 is connected to a lead wire from the power supply unit 111, electrically connecting the power supply unit 111 and the resistance heating layer 42. The electrical contact 43 and the lead wire may be connected by soldering. The electrical contact 43 is made of a conductive material. Examples of materials that can be used to form the electrical contact 43 include metallic materials such as tin or nickel. The electrical contact 43 may be laminated using a vapor deposition process or a printing process.

[0058] 2, most of the resistive heating layer 42a, the resistive heating layer 42b, and the electrical contacts 43 are laminated on the electrical insulating layer 41. This configuration makes it possible to prevent short circuits through internal components of the heating unit 40 (e.g., the housing 50 or the adhesive layer 60).

[0059] 2 and 3, the end of the resistive heating layer 42a protrudes from the electrical insulation layer 41 and is laminated on the outer surface of the first adhesive layer 61. With this configuration, the two resistive heating layers 42 arranged on one pair of side walls 54a are electrically connected via the first adhesive layer 61 to form a single conductive path. Therefore, by connecting wires to each of the two electrical contacts 43 connected to the two resistive heating layers 42 arranged on the pair of side walls 54a, it is possible to pass current supplied from the power supply unit 111 through the two resistive heating layers 42 and cause each to generate heat.

[0060] An example of the configuration of the heating system 30 according to this embodiment has been described above. Next, the configuration of the adhesive layer 60, which is characteristic of the heating system 30 according to this embodiment, will be described in more detail.

[0061] The heat conductivity of the first adhesive layer 61 is preferably higher than that of the second adhesive layer 62. In other words, the heat conductivity of the second adhesive layer 62 is preferably lower than that of the first adhesive layer 61. This configuration prevents heat generated in the heat-generating region 44 of the heating unit 40 from diffusing to the non-heat-generating region 45. As a result, it is possible to prevent the solder at the electrical contacts 43 from melting and the conductor from falling off. Furthermore, because unintended heat transfer downward in the housing unit 50 is reduced, it is possible to achieve the desired temperature distribution in the housing unit 50 and reduce energy loss. In this way, this configuration reduces unnecessary heat transfer through the adhesive layer 60, improving the quality of the user experience.

[0062] Considering that the first adhesive layer 61 is laminated so as to cover the entire outer periphery of the storage unit 50, it is desirable that the thermal conductivity of the first adhesive layer 61 is at least higher than the thermal conductivity of the storage unit 50. With this configuration, heat generated in the heat generating region 44 of the heating unit 40 on the side wall 54a can be diffused over the entire periphery of the storage unit 50, including the side walls 54b and 54c, via the first adhesive layer 61. As a result, the stick-shaped substrate 150 stored in the storage unit 50 can be efficiently heated.

[0063] On the other hand, it is desirable that the heat conductivity of the second adhesive layer 62 is at least lower than the heat conductivity of the housing portion 50. With this configuration, it is possible to reduce heat transfer to the electrical contacts 43 via the housing portion 50.

[0064] There are various possible configurations for realizing the above-mentioned magnitude relationship of the heat transfer properties between the first adhesive layer 61 and the second adhesive layer 62 .

[0065] As an example, the second adhesive layer 62 may be configured to be thinner than the first adhesive layer 61. For example, the first adhesive layer 61 may be laminated multiple times, and the second adhesive layer 62 may be laminated once. With such a configuration, it is possible to achieve strong adhesion between the side wall 54a and the electrical insulating layer 41 and the above-described magnitude relationship in heat conductivity between the first adhesive layer 61 and the second adhesive layer 62.

[0066] The above has described the detailed configuration of the adhesive layer 60. The effects of the above-described configuration will now be described.

[0067] It has been difficult to directly laminate the electrical insulating layer 41 onto the housing portion 50 due to the characteristics of the materials of the electrical insulating layer 41 and the housing portion 50 .

[0068] In this regard, in this embodiment, the electrical insulating layer 41 and the housing portion 50 are bonded together by the adhesive layer 60. With this configuration, it is possible to avoid the above-mentioned manufacturing difficulties.

[0069] Even if it were possible to laminate the electrical insulating layer 41 directly on the housing portion 50, there was a risk that the electrical insulating layer 41 would peel off due to the effects of thermal expansion. This is because the dimensional change caused by thermal expansion in the housing portion 50 is significantly larger than the dimensional change caused by thermal expansion in the electrical insulating layer 41. The reasons for this difference include the fact that the thermal expansion coefficient of the housing portion 50, which is made of SUS or the like, is larger than the thermal expansion coefficient of the electrical insulating layer 41, which is made of glass or the like, and that the housing portion 50 is configured to be thicker than the electrical insulating layer 41.

[0070] In this regard, in the present embodiment, an adhesive layer 60 is provided between the housing portion 50 and the electrical insulating layer 41. The adhesive layer 60 is thinner than the housing portion 50, and is configured to be, for example, approximately the same thickness as the electrical insulating layer 41, so that the dimensional change caused by thermal expansion is smaller than that of the housing portion 50. Therefore, the adhesive layer 60 can alleviate the load applied to the electrical insulating layer 41 due to the large difference in dimensional change caused by thermal expansion between the housing portion 50 and the electrical insulating layer 41. As a result, it is possible to prevent peeling of the electrical insulating layer 41 due to the effects of thermal expansion.

[0071] The thermal expansion coefficient of SUS, which can be used to form the housing portion 50, is 16.2×10 －６ The thermal expansion coefficient of silver that can form the adhesive layer 60 may be about 19.7×10 －６ The thermal expansion coefficient of the glass that can form the electrical insulating layer 41 may be about 9.0×10 －６ It may be about [ / °C].

[0072] As described above, according to this embodiment, it is possible to improve the manufacturing quality of the suction device 100 and further prevent malfunctions during use, thereby improving the quality of the user experience when using the suction device 100.

[0073] 3. Supplementary Information Although preferred embodiments of the present disclosure have been described above in detail with reference to the accompanying drawings, the present disclosure is not limited to such examples. It is clear that a person skilled in the art to which the present disclosure pertains can conceive of various modified or altered examples within the scope of the technical ideas described in the claims, and it is understood that these also naturally fall within the technical scope of the present disclosure.

[0074] (First Modification) Various configurations other than those described in the above embodiment can be considered to realize the above-described magnitude relationship in heat transfer between the first adhesive layer 61 and the second adhesive layer 62.

[0075] As an example, the first adhesive layer 61 may be uniformly configured, and the second adhesive layer 62 may be sparsely configured. Such a configuration example will be described with reference to FIGS. 7 and 8. FIGS. 7 and 8 are diagrams showing another example of the configuration of the adhesive layer 60. As shown in FIG. 7, the second adhesive layer 62 may be configured in a mesh pattern. Alternatively, as shown in FIG. 8, the second adhesive layer 62 may be configured in a dot pattern.

[0076] These configurations allow a portion of the sidewall 54a in the non-heat-generating region 45 to be exposed, while the other portion is covered by the second adhesive layer 62. As a result, the sidewall 54a and the electrical insulating layer 41 can be bonded together by the second adhesive layer 62 that covers a portion of the sidewall 54a. That is, with these configurations, it is possible to achieve the above-mentioned magnitude relationship in heat transfer between the first adhesive layer 61 and the second adhesive layer 62 while ensuring a certain degree of adhesion between the sidewall 54a and the electrical insulating layer 41.

[0077] Furthermore, with this configuration, the exposed portion of the side wall 54a in the non-heat-generating region 45 provides room for the second adhesive layer 62 to expand laterally (i.e., in a direction parallel to the side surface of the housing portion 50). As a result, peeling of the electrical insulating layer 41 due to thermal expansion of the adhesive layer 60 can be further prevented.

[0078] Of course, the second adhesive layer 62 may be configured in any shape as long as it exposes a portion of the sidewall 54a in the non-heat-generating region 45 while covering the other portion. As one example, the second adhesive layer 62 may be configured in a diagonal line pattern. As another example, when the second adhesive layer 62 is configured in a dot pattern, the dots may be in any shape, such as a circle, an ellipse, or a rectangle.

[0079] Here, a desirable configuration of the second adhesive layer 62 when the second adhesive layer 62 is laminated while exposing a portion of the sidewall 54a in the non-heat-generating region 45 will be described with reference to FIG. 9 . FIG. 9 is a diagram showing another example of the configuration of the adhesive layer 60. As shown in FIG. 9 , the edge 62e of the second adhesive layer 62 is desirably configured in a tapered shape. With this configuration, the tapered edge 62e gently fills the step between the portion where the second adhesive layer 62 is laminated and the sidewall 54a, preventing the electrical insulating layer 41 from lifting in the portion where the sidewall 54a is exposed. As a result, peeling of the electrical insulating layer 41 can be prevented.

[0080] 9 is also preferably employed for the first adhesive layer 61. In particular, it is preferable that the portion of the edge of the first adhesive layer 61 that is covered by the electrical insulating layer 41 (for example, the boundary between the first adhesive layer 61 and the second adhesive layer 62) be configured in a tapered shape.

[0081] As another example, the first adhesive layer 61 and the second adhesive layer 62 may be made of different materials. In particular, the second adhesive layer 62 may be made of a material that has lower thermal conductivity than the first adhesive layer 61.

[0082] (Second Modification) Various configurations other than those described above can be considered as configurations for reducing unnecessary heat transfer through the adhesive layer 60. Another configuration example will be described with reference to FIG.

[0083] Fig. 10 is a diagram showing another example of the configuration of the adhesive layer 60. Fig. 10 shows a state in which the adhesive layer 60 is laminated on the housing portion 50 shown in Fig. 4. However, for ease of explanation, the resistance heating layer 42, which will be laminated in a later step, is shown by a dashed line.

[0084] 10 , the first adhesive layer 61 and the second adhesive layer 62 may be configured to be spaced apart from each other. With this configuration, it is possible to reduce unnecessary heat transfer from the heat-generating region 44 to the non-heat-generating region 45.

[0085] 10 , the first portion 62a of the second adhesive layer 62, on which the resistance heating layer 42b is laminated, and the second portion 62b of the second adhesive layer 62, on which the electrical contact 43 is laminated, may be configured to be separated from each other. The first portion 62a of the second adhesive layer 62 is an example of a portion of the second adhesive layer 62 that corresponds to a part other than the electrical contact 43. The second portion 62b of the second adhesive layer 62 is an example of a part of the second adhesive layer 62 that corresponds to the electrical contact 43. With this configuration, it is possible to reduce heat transfer to the electrical contact 43.

[0086] (Third Modification) In the above embodiment, an example has been described in which the two heating units 40 are electrically connected to the first adhesive layer 61 and electricity is supplied via the first adhesive layer 61, but the present disclosure is not limited to such an example. As shown in Fig. 11 , electricity may be supplied to the heating units 40 without passing through the first adhesive layer 61.

[0087] FIG. 11 is a diagram showing another example of the configuration of the heating system 30. The heating system 30 shown in FIG. 11 has the same configuration as the heating system 30 shown in FIG. 2 except for the configuration of the heating unit 40. As shown in FIG. 11, the entire resistive heating layer 42 is disposed on the electrical insulation layer 41. Furthermore, both ends of the resistive heating layer 42 (42a and 42b) are connected to two electrical contacts 43. Each of the two electrical contacts 43 is connected to a conductor from the power supply unit 111, electrically connecting the power supply unit 111 and the resistive heating layer 42. With this configuration, it is possible to energize the heating unit 40 without using the first adhesive layer 61.

[0088] (Other) The configuration examples described in the above embodiment and modified examples may be combined as appropriate. For example, the second adhesive layer 62 may be thinner than the first adhesive layer 61, configured in a mesh shape, and spaced apart from the first adhesive layer 61.

[0089] Although the example in which the first adhesive layer 61 is disposed to cover the entire periphery of the side wall 54 of the accommodation unit 50 has been described above, the present disclosure is not limited to such an example. For example, when the heating unit 40 is energized without passing through the first adhesive layer 61, the first adhesive layer 61 may be disposed only on the side wall 54 a.

[0090] In the non-heat generating region 45, the area where the electrical insulating layer 41 is laminated and the area where the second adhesive layer 62 is laminated may be the same or different. For example, the second adhesive layer 62 may be laminated on the housing portion 50, protruding beyond the area where the electrical insulating layer 41 is laminated, such as protruding onto the side wall 54b.

[0091] The following configurations also fall within the technical scope of the present disclosure. (1) A suction device comprising: a cylindrical body capable of accommodating a substrate containing an aerosol source; an adhesive layer disposed on the outside of a side wall of the cylindrical body and adhering to members disposed on both the inside and outside; an electrically insulating layer disposed on the outside of the adhesive layer and adhered to the side wall of the cylindrical body by the adhesive layer; a heat generating portion disposed on the outside of the insulating layer; and a conductive portion disposed on the outside of the insulating layer and conducting power to the heat generating portion, wherein a first adhesive layer of the adhesive layer corresponding to the position of the heat generating portion has higher thermal conductivity than a second adhesive layer of the adhesive layer corresponding to the position of the conductive portion. (2) The suction device described in (1), wherein the first adhesive layer is uniformly configured and the second adhesive layer is sparsely configured. (3) The suction device described in (2), wherein the second adhesive layer is configured in a mesh pattern. (4) The suction device described in (2), wherein the second adhesive layer is configured in a dot pattern. (5) The suction device according to any one of (1) to (4), wherein the second adhesive layer is thinner than the first adhesive layer. (6) The suction device according to any one of (1) to (5), wherein the first adhesive layer and the second adhesive layer are spaced apart. (7) The suction device according to any one of (1) to (6), wherein one end of the conductive portion is connected to the heat generating portion and the other end of the conductive portion is connected to a conductor that supplies power to the heat generating portion, and wherein a portion of the second adhesive layer corresponding to a contact point between the conductive portion and the conductor and a portion of the second adhesive layer other than the contact point of the conductive portion are spaced apart. (8) The suction device according to any one of (1) to (7), wherein the first adhesive layer and the second adhesive layer are made of the same material. (9) The suction device according to any one of (1) to (8), wherein edges of the adhesive layers are tapered. (10) The suction device according to any one of (1) to (9), wherein the side wall of the cylindrical body includes a plurality of flat plates, and at least a portion of the adhesive layer, the insulating layer, the heat generating portion, and the conductive portion are disposed outside the flat plates.(11) The suction device according to any one of (1) to (10), wherein the first adhesive layer is disposed so as to cover an outer periphery of a side wall of the cylindrical body, and wherein the thermal conductivity of the first adhesive layer is higher than the thermal conductivity of the cylindrical body. (12) The suction device according to any one of (1) to (11), wherein the thermal conductivity of the second adhesive layer is lower than the thermal conductivity of the cylindrical body.

[0092] DESCRIPTION OF SYMBOLS 100 Suction device 111 Power supply unit 112 Sensor unit 113 Notification unit 114 Memory unit 115 Communication unit 116 Control unit 150 Stick-shaped substrate 151 Substrate unit 152 Suction nozzle unit 30 Heating system 40 Heating unit 41 Electrical insulation layer 42 Resistive heating layer 43 Electrical contact 44 Heat-generating region 45 Non-heat-generating region 50 Storage unit 52 Opening 54 Side wall 56 Bottom wall 60 Adhesive layer 61 First adhesive layer 62 Second adhesive layer 70 Heat-insulating unit 80 Internal space

Claims

1. An suction device comprising: a cylindrical body capable of accommodating a substrate containing an aerosol source; an adhesive layer disposed on the outside of a side wall of the cylindrical body and adhering to members disposed on both the inside and outside; an electrically insulating layer disposed on the outside of the adhesive layer and adhered to the side wall of the cylindrical body by the adhesive layer; a heating portion disposed on the outside of the insulating layer; and a conductive portion disposed on the outside of the insulating layer for conducting power to the heating portion, wherein the thermal conductivity of a first adhesive layer of the adhesive layer corresponding to the position of the heating portion is higher than the thermal conductivity of a second adhesive layer of the adhesive layer corresponding to the position of the conductive portion.

2. The suction device according to claim 1, wherein the first adhesive layer is uniformly configured, and the second adhesive layer is sparsely configured.

3. The suction device according to claim 2, wherein the second adhesive layer is configured in a mesh shape.

4. The suction device according to claim 2, wherein the second adhesive layer is configured in a dot shape.

5. The suction device according to any one of claims 1 to 4, wherein the second adhesive layer is configured to be thinner than the first adhesive layer.

6. The suction device according to any one of claims 1 to 5, wherein the first adhesive layer and the second adhesive layer are configured to be spaced apart from each other.

7. A suction device as claimed in any one of claims 1 to 6, wherein one end of the conductive part is connected to the heating part and the other end of the conductive part is connected to a conductor that supplies power to the heating part, and a portion of the second adhesive layer that corresponds to the contact point between the conductive part and the conductor and a portion of the second adhesive layer that corresponds to other than the contact point of the conductive part are configured to be separated from each other.

8. The suction device according to any one of claims 1 to 7, wherein the first adhesive layer and the second adhesive layer are made of the same material.

9. The suction device according to any one of claims 1 to 8, wherein the edge of the adhesive layer is configured to be tapered.

10. A suction device as claimed in any one of claims 1 to 9, wherein the side wall of the cylindrical body includes a plurality of flat plates, and at least a portion of the adhesive layer, the insulating layer, the heating portion, and the conductive portion are arranged outside the flat plates.

11. A suction device as described in any one of claims 1 to 10, wherein the first adhesive layer is arranged to cover the outer periphery of the side wall of the cylindrical body, and the thermal conductivity of the first adhesive layer is higher than the thermal conductivity of the cylindrical body.

12. The suction device according to any one of claims 1 to 11, wherein the thermal conductivity of the second adhesive layer is lower than the thermal conductivity of the cylindrical body.

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