Aerosol generation system

Abstract

[Project] To provide an aerosol generation system capable of increasing the heating rate of the heating section. [Solution] An aerosol generating system comprising a resistance heating member having a porous structure in at least part thereof and heating an aerosol generating substrate from the inside, and a pair of plate-shaped conductive members provided on mutually opposing surfaces of the resistance heating member.

Description

Technology Field

[0001] The present invention relates to an aerosol generating system. Background Technology

[0002] Inhalation devices such as electronic cigarettes and nebulizers that generate substances inhaled by the user are widely available. Such inhalation devices can generate aerosols imparted with flavor components by utilizing an aerosol source for generating aerosols and a flavor source for imparting flavor components to the generated aerosols. The user can taste the flavor by inhaling the flavor-imparted aerosol generated by the inhalation device.

[0003] Recently, technology regarding a suction device of the type that uses a stick-shaped substrate as an aerosol source or flavor source is being actively developed. For example, Patent Document 1 below discloses a blade-shaped heating part that heats the substrate from the inside by being inserted into a stick-shaped substrate. Prior art literature

[0004] Chinese Utility Model No. 209807157 Specification The problem to be solved

[0005] However, since the heating unit disclosed in the above patent document 1 does not have a sufficiently high heating rate, it takes time to heat the substrate, making it difficult to provide a comfortable suction experience to the user of the suction device.

[0006] Therefore, the present invention has been made in consideration of the above problem, and the objective of the present invention is to provide a novel and improved aerosol generation system capable of increasing the heating rate of the heating section. means of solving the problem

[0007] In order to solve the above problem, according to one aspect of the present invention, an aerosol generating system is provided, comprising a resistance heating member having a porous structure in at least part thereof and heating an aerosol generating substrate from the inside, and a pair of plate-shaped conductive members provided on mutually opposing surfaces of the resistance heating member.

[0008] The above porous structure may include multiple regions with different porosities.

[0009] The above resistance heating element may include barium titanate.

[0010] The above resistance heating element may further include less than 0.3 g / cm³ of carbon.

[0011] The above-mentioned conductive part may have an insertion part into which the conductive part is inserted, and may further include a fixing part that fixes the conductive part to the housing.

[0012] The above-mentioned fixing part may be made of super engineering plastic.

[0013] The above-mentioned fixed part may be in the shape of a circular or rectangular flat plate.

[0014] The above conductive part may be composed of metal or carbon.

[0015] The above conductive part may be composed of a nickel-containing iron alloy.

[0016] The above resistance heating element may be in the shape of a flat plate.

[0017] The thickness of the above-mentioned flat plate shape may be less than 1 / 4 of the width of the above-mentioned flat plate shape.

[0018] The above-mentioned resistance heating element and the above-mentioned conductive element may further include the aerosol generating material into which the above-mentioned resistance heating element and the above-mentioned conductive element are inserted.

[0019] At least one of the above conductive portions may include a rib portion formed by bending the edge end of the conductive portion along the outer shape of the resistance heating portion from the mutually opposing surfaces of the resistance heating portion.

[0020] The above resistance heating element may be configured to have a shape that protrudes at an angle toward the tip side inserted into the interior of the aerosol generating material.

[0021] At least one of the above conductive portions may further include a tip rib portion formed by bending the edge end of the conductive portion along the shape of the tip side of the resistance heating portion.

[0022] The above-mentioned resistive heating part and the above-mentioned conductive part may be bonded together with a conductive adhesive paste.

[0023] The above resistance heating element may be a PTC heater.

[0024] The heating temperature of the above resistance heating part may be less than 350℃. Effects of the invention

[0025] As explained above, according to the present invention, the heating rate of the heating part in an aerosol generation system can be increased further. Brief explanation of the drawing

[0026] FIG. 1 is a schematic diagram schematically illustrating an example of the configuration of a suction device. FIG. 2 is a perspective view of a heating unit according to one embodiment of the present invention. FIG. 3 is an exploded perspective view of the main body of the heating unit equipped with the heating unit illustrated in FIG. 2. Figure 4 is a graph schematically showing the relationship between the density and electrical resistance value of a carbon porous body. FIG. 5 is an exploded perspective view of the heating unit body according to the first modified example. FIG. 6 is an exploded perspective view of the heating unit body according to the second modified example. FIG. 7 is an exploded perspective view of the heating unit body according to the third modified example. Specific details for implementing the invention

[0027] Suitable embodiments of the present invention will be described in detail below with reference to the attached drawings. In addition, in this specification and drawings, components having substantially the same functional configuration are given the same reference numerals to avoid redundant descriptions.

[0028] <1. Example of Suction Device Configuration>

[0029] The suction device according to the present embodiment generates an aerosol by heating a substrate containing an aerosol source from within the substrate. The present embodiment will be described below with reference to FIG. 1.

[0030] FIG. 1 is a schematic diagram schematically illustrating an example configuration of a suction device. As shown in FIG. 1, the suction device (100) according to the present 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 (121), and a receiving unit (140). In the suction device (100), suction by a user is performed while a stick-type material (150) is received in the receiving unit (140). Below, each component will be described in order.

[0031] Additionally, the suction device (100) and the stick-type material (150) work together to generate an aerosol that is inhaled by the user. For this reason, the combination of the suction device (100) and the stick-type material (150) may be understood as an aerosol generating system.

[0032] The power supply unit (111) accumulates power. The power supply unit (111) supplies power to each component of the suction device (100). The power supply unit (111) may be composed of a rechargeable battery, for example, a lithium-ion secondary battery. The power supply unit (111) may be charged by connecting to an external power source via a USB (Universal Serial Bus) cable, etc. Additionally, the power supply unit (111) may be charged without being connected to a device on the transmission side by wireless power transmission technology. Furthermore, the power supply unit (111) may be provided to be removable from the suction device (100) or to be replaceable with a new power supply unit (111).

[0033] 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 composed of a pressure sensor, a flow sensor, or a temperature sensor, such as a condenser microphone. When the pressure sensor, flow sensor, or temperature sensor detects a value associated with suction by the user, it may output information indicating that suction by the user has been performed to the control unit (116). As another example, the sensor unit (112) may be composed of an input device that receives input of information from the user, such as a button or a switch. In particular, the sensor unit (112) may include a button that indicates the start / stop of aerosol generation. The input device that receives input of information from the user may output the information input by the user to the control unit (116). As yet another example, the sensor unit (112) may be composed of a temperature sensor that detects the temperature of the heating unit (121). The temperature sensor can determine the temperature of the stick-type material (150) contained in the receiving portion (140) by detecting the temperature of the heating portion (121) based on, for example, the electrical resistance value of the heating portion (121).

[0034] The notification unit (113) notifies the user of information. For example, the notification unit (113) is configured by a light-emitting device such as an LED (Light Emitting Diode). Accordingly, the notification unit (113) can emit light with different light patterns when the state of 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). The light pattern here is a concept that includes color and timing of turning on / off, etc. The notification unit (113) may be configured with, together with or instead of the light-emitting device, a display device that displays an image, a sound output device that outputs sound, and a vibrating device. In addition, the notification unit (113) may notify information indicating that suction by the user has become possible. Information indicating that suction by the user has become possible may be notified when the temperature of the stick-type material (150) heated by the heating unit (121) reaches a predetermined temperature.

[0035] The memory unit (114) stores various information for the operation of the suction device (100). The memory unit (114) is composed of a non-volatile storage medium, such as flash memory, for example. An example of information stored in the memory unit (114) is information regarding the OS (Operating System) of the suction device (100), such as control information of various components by the control unit (116). Another example of information stored in the memory unit (114) is information regarding suction by the user, such as the number of suctions, the time of suction, or the cumulative total of suction times.

[0036] The communication unit (115) is a communication interface for transmitting and receiving information between the suction device (100) and another device. The communication unit (115) performs communication based on any wired or wireless communication standard. Such communication standards may include, for example, a wireless LAN (Local Area Network), a wired LAN, Wi-Fi (registered trademark), or Bluetooth (registered trademark). As an example, the communication unit (115) may transmit information regarding suction by a user to a smartphone in order to display information regarding suction by a user on the smartphone. As another example, the communication unit (115) may receive information regarding a new OS from a server in order to update information regarding an OS stored in the memory unit (114).

[0037] The control unit (116) functions as a computational processing unit and a control unit, and controls the overall operation within the suction device (100) according to various programs. The control unit (116) is realized by electronic circuits such as a CPU (Central Processing Unit) or a microprocessor, for example. In addition, the control unit (116) may include a ROM (Read Only Memory) that stores programs and computational parameters to be used, and a RAM (Random Access Memory) that temporarily stores parameters that change appropriately. The suction device (100) executes various processes based on control by the control unit (116). Supplying power from the power unit (111) to other components, charging the power unit (111), detection of information by the sensor unit (112), notification of information by the notification unit (113), storage and reading of information by the memory unit (114), and transmission and reception of information by the communication unit (115) are examples of processes controlled by the control unit (116). Other processing performed by the suction device (100), such as inputting information to each component and processing based on information output from each component, is also controlled by the control unit (116).

[0038] The receiving portion (140) has an internal space (141) and holds and supports the stick-shaped material (150) while receiving a part of the stick-shaped material (150) in the internal space (141). The receiving portion (140) has an opening (142) that communicates the internal space (141) to the outside and holds and supports the stick-shaped material (150) inserted into the internal space (141) from the opening (142). For example, the receiving portion (140) is a tubular body with the opening (142) and the bottom (143) as the bottom surface, and defines a column-shaped internal space (141). The receiving portion (140) is configured such that, in at least a portion of the height direction of the tubular body, the inner diameter becomes smaller than the outer diameter of the stick-shaped material (150), and can hold and support the stick-shaped material (150) inserted into the internal space (141) by pressing it from the outer circumference. The receiving portion (140) also has the function of defining an air passage through the stick-shaped material (150). An air inlet hole, which is the inlet of air into the relevant passage, is disposed, for example, at the bottom portion (143). Meanwhile, an air outlet hole, which is the outlet of air from the relevant passage, is an opening (142).

[0039] The stick-type material (150) is a stick-type aerosol generating material. The stick-type material (150) includes a material portion (151) and a suction portion (152).

[0040] The substrate (151) includes an aerosol source. The aerosol source is atomized by heating to produce an aerosol. The aerosol source may include, for example, tobacco-derived materials such as processed products formed from tobacco or tobacco raw materials into granular, sheet-like, or powder forms. Additionally, the aerosol source may include non-tobacco-derived materials produced from plants other than tobacco (e.g., mint or herbs). If the inhalation device (100) is a medical inhaler, the aerosol source may include a drug for the patient to inhale. Furthermore, the aerosol source is not limited to a solid and may be, for example, a polyhydric alcohol such as glycerin or propylene glycol, or a liquid such as water. At least a portion of the substrate (151) is received in the internal space (141) of the receiving portion (140) while the stick-type substrate (150) is held and supported in the receiving portion (140).

[0041] The suction part (152) is a member that is held by the user when inhaling. At least a portion of the suction part (152) protrudes from the opening (142) while the stick-shaped material (150) is held and supported in the receiving part (140). Then, by the user biting the suction part (152) protruding from the opening (142) and inhaling, air is drawn into the interior of the receiving part (140) from an air inlet hole not shown. The incoming air passes through the internal space (141) of the receiving part (140), that is, through the material part (151), and reaches the user's mouth together with the aerosol generated from the material part (151).

[0042] The heating unit (121) generates an aerosol by heating the aerosol source and atomizing it. Although details will be described later, the heating unit (121) is configured in a blade shape and is positioned to protrude from the bottom (143) of the receiving unit (140) into the internal space (141) of the receiving unit (140). Therefore, when a stick-type material (150) is inserted into the receiving unit (140), the blade-shaped heating unit (121) is inserted into the material part (151) of the stick-type material (150) and inserted into the interior of the stick-type material (150). Then, when the heating unit (121) generates heat, the aerosol source contained in the stick-type material (150) is heated and atomized from the interior of the stick-type material (150), and an aerosol is generated. The heating unit (121) generates heat when supplied with power from the power supply unit (111). For example, when a predetermined user input is detected by the sensor unit (112), the supplied heating unit (121) generates heat, and the temperature of the stick-type substrate (150) reaches a predetermined temperature, thereby generating an aerosol from the stick-type substrate (150). Accordingly, the suction device (100) can enable suction by the user. Afterward, when a predetermined user input is detected by the sensor unit (112), the supply of power to the heating unit (121) may be stopped. As another example, during the period when suction by the user is detected by the sensor unit (112), an aerosol may be generated by the supplied heating unit (121).

[0043] <2. Detailed Configuration of the Heating Unit>

[0044] Next, with reference to FIGS. 2 and FIGS. 3, the heating unit (121) provided by the suction device (100) according to the present embodiment will be described in more detail. FIGS. 2 is a perspective view of the heating unit (121) according to the present embodiment. FIGS. 3 is an exploded perspective view of the heating unit body (1250) provided by the heating unit (121) shown in FIGS. 2.

[0045] As illustrated in FIG. 2, the heating unit (121) comprises a heating unit body (1250) and a fixing unit (1260). The heating unit body (1250) is supported by the fixing unit (1260) and is fixed to the housing of the suction device (100), etc., via the fixing unit (1260).

[0046] As illustrated in FIG. 3, the heating body (1250) includes a resistance heating part (1210), a first conductive part (1220), and a second conductive part (1230). The heating body (1250) can heat a stick-type substrate (150) from the inside by heat from the resistance heating part (1210) which is energized through the first conductive part (1220) and the second conductive part (1230).

[0047] Here, in FIGS. 2 and 3, the direction of the tip side into which the heating body (1250) is inserted into the interior of the stick-shaped substrate (150) is also referred to as the up direction, and the direction opposite to the up direction is also referred to as the down direction. Additionally, the direction in which the first conductive part (1220), the resistance heating part (1210), and the second conductive part (1230) are joined is also referred to as the front-back direction, and the direction orthogonal to the up-down direction and the front-back direction, respectively, is also referred to as the left-right direction.

[0048] The resistance heating member (1210) is a plate-shaped member that generates heat by resistance heating. Specifically, the resistance heating member (1210) is a PTC (Positive Temperature Coefficient) heater that generates heat by energizing between the first conductive member (1220) and the second conductive member (1230).

[0049] A PTC heater is a heater that utilizes a resistor having a characteristic (PTC characteristic) in which the electrical resistance value rises rapidly and electricity does not flow when a predetermined temperature (referred to as the Curie temperature) is reached. Since the amount of current flowing can be controlled by temperature without using a control device by utilizing the PTC characteristic, the heating temperature can be controlled to be below the Curie temperature. Therefore, the PTC heater can heat the target to a temperature below the Curie temperature. For example, the resistance heating part (1210) may be a PTC heater using barium titanate (BaTiO3) having PTC characteristics as the resistor. In such a case, the resistance heating part (1210) can set the Curie temperature of the barium titanate to 350°C, so the stick-type substrate (150) can be heated to a temperature below 350°C.

[0050] Various properties of barium titanate having PTC characteristics, such as the Curie temperature or electrical resistance value, can be controlled, for example, by an additive added in small amounts to barium titanate. Specifically, alkaline earth metal elements such as calcium (Ca) or strontium (Sr), or rare earth metal elements such as yttrium (Y), neodymium (Nd), samarium (Sm), or dysprosium (Dy) may be added to barium titanate. These added elements can control the structure of the sintered body of barium titanate by substituting the Ba sites or Ti sites of barium titanate. By controlling the structure of the sintered body, various properties of barium titanate, such as the Curie temperature or electrical resistance value, can be controlled.

[0051] In the suction device (100) according to the present embodiment, the resistance heating member (1210) is provided to have a porous structure in at least a portion. Since the resistance heating member (1210) has a porous structure in at least a portion, the mass can be reduced for the same volume, and thus the heat capacity can be reduced. Accordingly, since the resistance heating member (1210) can raise the temperature more efficiently with a smaller amount of heat, the heating rate of the heating member (121) can be increased. A porous structure is a structure in which a large number of holes are formed. For example, the porous structure may be a structure in which the porosity, calculated by dividing the sum of the volumes of the holes by the total volume, is 10% or more. In addition, the size of the holes formed in the porous structure is not particularly limited.

[0052] A resistance heating element (1210) having such a porous structure can be manufactured, for example, by controlling the mixing conditions, dispersion conditions, and sintering conditions of the titanium source and barium source in a sintered body of barium titanate.

[0053] Additionally, the resistance heating element (1210) having a porous structure can be manufactured by sintering barium titanate with the addition of carbon. In this case, the porosity of the porous structure of the resistance heating element (1210) can be controlled by the amount of carbon added.

[0054] For example, when barium titanate is sintered to form a porous structure without adding carbon, the porosity of the porous structure can be controlled to approximately 10%. In addition, when barium titanate is sintered to form a porous structure by controlling the mass ratio of barium titanate to carbon to 90:10, the porosity of the porous structure can be controlled to approximately 50%. In addition, when barium titanate is sintered to form a porous structure by controlling the mass ratio of barium titanate to carbon to 75:25 to 10:90, the porosity of the porous structure can be controlled to approximately 75%.

[0055] In addition, it is possible to control the electrical resistance value of the resistance heating element (1210) by controlling the amount of carbon added. However, if the density of carbon added to the barium titanate is 0.3 g / cm³ or higher, there is a possibility that the PTC characteristics of the barium titanate may deteriorate. Referring to FIG. 4, the above threshold value of the carbon density is explained. FIG. 4 is a graph schematically showing the relationship between the density of the carbon porous body and the electrical resistance value.

[0056] As shown in FIG. 4, the electrical resistance of the carbon porous body decreases rapidly when the density of the carbon becomes 0.3 g / cm³ or higher. This is because as the density increases, the carbon network becomes easier to form and current flows more easily. Therefore, if the density of the carbon added to the barium titanate becomes 0.3 g / cm³ or higher, the electrical resistance of the carbon becomes lower than that of the barium titanate, and there is a possibility that current will flow only through the carbon. In such a case, current will not flow through the barium titanate having PTC characteristics, and there is a possibility that the resistance heating part (1210) will not function as a PTC heater. For this reason, it is desirable to control the density of the carbon added to the barium titanate to be less than 0.3 g / cm³.

[0057] Here, the density of barium titanate is 6 g / cm³ in a state of 10% porosity without carbon addition. Therefore, assuming the density of barium titanate in a state of 50% porosity is 3 g / cm³, the resistance heating part (1210) having a porous structure with 50% porosity contains 3 g / cm³ of barium titanate and less than 0.3 g / cm³ of carbon. Additionally, assuming the density of barium titanate in a state of 75% porosity is 1.5 g / cm³, the resistance heating part (1210) having a porous structure with 75% porosity contains 1.5 g / cm³ of barium titanate and less than 0.3 g / cm³ of carbon.

[0058] Additionally, the porous structure of the resistance heating element (1210) may include multiple regions with different porosities.

[0059] For example, the resistance heating member (1210) may be configured to include multiple regions with different porosities by connecting multiple PTC heaters having porous structures with different porosities in a long direction (i.e., up and down direction). For example, the resistance heating member (1210) may have a region with a higher porosity on the front end side inserted into the stick-type substrate (150) and a region with a lower porosity on the rear end side. In such a case, the resistance heating member (1210) can further reduce the heat capacity of the front end side region inserted into the stick-type substrate (150), and thus can heat the stick-type substrate (150) more efficiently by increasing the heating rate of the front end side.

[0060] As another example, the resistance heating member (1210) may be configured to include multiple regions with different porosities by connecting multiple PTC heaters having porous structures with different porosities in a short direction (i.e., left-right direction). In such a case, the resistance heating member (1210) may provide a region with a higher porosity in the central part of the resistance heating member (1210) and regions with a lower porosity at both ends. In such a case, since the resistance heating member (1210) can further reduce the heat capacity of the region near the center of the stick-type substrate (150), the stick-type substrate (150) can be heated more efficiently by increasing the heating rate of the central part.

[0061] The resistance heating member (1210) may be composed of a long flat plate extending in the vertical direction. That is, the long direction of the long shape of the resistance heating member (1210) corresponds to the vertical direction, and the short direction of the long shape corresponds to the horizontal direction. By being composed of a long flat plate, the resistance heating member (1210) has a rectangular cross-section perpendicular to the long direction of the long shape (i.e., the vertical direction). Accordingly, the resistance heating member (1210) can have a longer perimeter of the cross-sectional shape compared to the case where the cross-section is a circular shape with the same area. Therefore, the resistance heating member (1210) can have a wider contact area between the heating member (121) and the stick-shaped substrate (150) into which the heating member (121) is inserted, so the stick-shaped substrate (150) can be heated more efficiently. For example, the thickness of the flat plate shape of the resistance heating part (1210) may be less than 1 / 4 of the width of the short direction (i.e., left-right direction) of the long shape.

[0062] Additionally, the resistance heating part (1210) on the tip side that is inserted into the interior of the stick-type substrate (150) may be provided in a shape that protrudes at an angle toward the tip side (i.e., toward the upward direction). The shape of the angle formed toward the tip side may be an acute angle, a right angle, or an obtuse angle. For example, the resistance heating part (1210) may be provided in the shape of a pentagonal flat plate that is extended toward the up and down direction, with a apex existing at the tip side (i.e., the upward direction side) that is inserted into the interior of the stick-type substrate (150). By making the tip side (i.e., the upward direction side) of the resistance heating part (1210) that is inserted into the interior of the stick-type substrate (150) into a pointed shape like a knife tip, the insertion of the heating part (121) into the interior of the stick-type substrate (150) can be made easier.

[0063] The first conductive part (1220) and the second conductive part (1230) are a pair of electrode plates that enclose the resistance heating part (1210). Specifically, the first conductive part (1220) and the second conductive part (1230) may be provided on opposite main surfaces in the front-rear direction of the flat plate-shaped resistance heating part (1210). The first conductive part (1220) and the second conductive part (1230) are provided spaced apart from each other so as not to be short-circuited.

[0064] The first conductive part (1220) and the second conductive part (1230) can be connected to the resistance heating part (1210) by bonding them together using a conductive adhesive paste. As for the conductive adhesive paste, for example, a so-called anisotropic conductive adhesive in which conductive particles are uniformly dispersed in an epoxy-based adhesive can be used.

[0065] The first conductive part (1220) and the second conductive part (1230) may be composed of a metal with a low coefficient of thermal expansion, for example. For example, the first conductive part (1220) and the second conductive part (1230) may be composed of a nickel (Ni) containing iron alloy with a low coefficient of thermal expansion, such as invar (registered trademark). Accordingly, the first conductive part (1220) and the second conductive part (1230) can prevent the adhesion between them and the resistance heating part (1210) from peeling off due to thermal expansion when the resistance heating part (1210) generates heat.

[0066] Additionally, the first conductive part (1220) and the second conductive part (1230) may be composed of a conductive carbon sheet as another example. Since the first conductive part (1220) and the second conductive part (1230) composed of a carbon sheet have minimal dimensional change at high temperatures, the adhesion between them and the resistance heating part (1210) can be suppressed due to thermal expansion when the resistance heating part (1210) generates heat. Furthermore, since the carbon sheet is lightweight, the first conductive part (1220) and the second conductive part (1230) can further improve the portability of the suction device (100) including the heating part (121) by making the heating part (121) lighter.

[0067] As another example, the first conductive part (1220) and the second conductive part (1230) may be composed of a laminate of metal and carbon sheets. For example, the first conductive part (1220) and the second conductive part (1230) may be composed of a laminate of Invar (registered trademark) and carbon sheets. The first conductive part (1220) and the second conductive part (1230) can further suppress delamination caused by the difference in thermal expansion rates with the resistance heating part (1210) by laminating the carbon sheets so as to face the resistance heating part (1210).

[0068] The first conductive part (1220) and the second conductive part (1230) may be provided to cover the resistance heating part (1210) with a shape corresponding to the shape of the resistance heating part (1210). Specifically, the first conductive part (1220) and the second conductive part (1230) may be provided with a shape in which the long shape of the resistance heating part (1210) is further extended in the long direction (i.e., the vertical direction). For example, the first conductive part (1220) and the second conductive part (1230) may be provided with a pentagonal flat plate shape extended in the vertical direction, with a apex existing on the leading side (i.e., the vertical side) that is inserted into the inside of the stick-shaped substrate (150), just like the resistance heating part (1210). In addition, the first conductive part (1220) and the second conductive part (1230) may be provided with the same shape or different shapes.

[0069] The rear end (i.e., the downward side) opposite to the front end of the first conductive part (1220) and the second conductive part (1230) may be provided to extend further downward than the end of the rear end of the resistance heating part (1210). The downwardly extended area of ​​the first conductive part (1220) and the second conductive part (1230) is, for example, inserted into a fixing part (1260) to fix the heating part body (1250) to the housing of the suction device (100).

[0070] The fixing part (1260) is a structural member that fixes the heating part body (1250) to the housing of the suction device (100). Specifically, the fixing part (1260) is configured in a circular or rectangular flat plate shape having a slit-shaped concave structure or an insertion part (1261) with a through hole structure.

[0071] The insertion part (1261) may be a two-concave structure or through-hole structure into which the first conductive part (1220) and the second conductive part (1230) are each inserted, or a single concave structure or through-hole structure into which the first conductive part (1220) and the second conductive part (1230) are inserted together. The fixing part (1260) can hold and support the heating part body (1250) and fix the heating part body (1250) to the housing of the suction device (100) by inserting the first conductive part (1220) and the second conductive part (1230) into the insertion part (1261).

[0072] The fixed part (1260) may be composed of super engineering plastic. Super engineering plastic is suitablely used as a constituent material for structural members because it has high heat resistance and mechanical strength, and can also form desired shapes cheaply through injection molding, etc. For example, the fixed part (1260) may be composed of PEEK (Poly Ether Ether Ketone), which is a type of engineering plastic. PEEK is a thermoplastic resin that has very high heat resistance and high dimensional stability. Therefore, by making the fixed part (1260) of PEEK, the dimensional change of the fixed part (1260) caused by the heat emitted by the resistance heating part (1210) is further reduced.

[0073] Additionally, the fixed part (1260) may hold and support the first conductive part (1220) and the second conductive part (1230) in an area extending downward from the rear end of the resistance heating part (1210) of the first conductive part (1220) and the second conductive part (1230). By holding and supporting the heating part body (1250) in an area away from the resistance heating part (1210), the fixed part (1260) can reduce the possibility of heat propagation from the resistance heating part (1210). In such a case, the fixed part (1260) can more flexibly select the constituent material considering not only heat resistance but also processability and cost. For example, the fixed part (1260) can use a resin with a lower melting point or glass potential point than metal as a constituent material. In addition, since the fixed part (1260) does not come into direct contact with the resistance heating part (1210), the possibility of heat generated from the resistance heating part (1210) propagating to the housing of the suction device (100) can be further reduced.

[0074] According to the above configuration, the heating unit (121) according to the present embodiment can reduce the heat capacity by making at least a part of the resistance heating unit (1210) porous, so that the temperature can be raised with a smaller amount of heat. Accordingly, the suction device (100) according to the present embodiment can increase the heating rate of the heating unit (121).

[0075] <3. Variation Example>

[0076] Referring to FIGS. 5 to 7, first to third variations of the heating body (1250) according to the present embodiment will be described. Additionally, since the first conductive part (1220) and the second conductive part (1230) are interchangeable, the following description of the first conductive part (1220) can be applied as is by replacing other phrases with the same conditions in the description of the second conductive part (1230).

[0077] (1st variation)

[0078] FIG. 5 is an exploded perspective view of a heating body (1250A) according to a first modified example. In FIG. 5, as in FIG. 2 and FIG. 3, the up-down direction, the front-back direction, and the left-right direction are defined. Specifically, the direction of the tip side where the heating body (1250A) is inserted into the interior of the stick-type substrate (150) is also referred to as the up direction, and the direction opposite to the up direction is also referred to as the down direction. In addition, the direction in which the first conductive part (1220), the resistance heating part (1210), and the second conductive part (1230) are joined is also referred to as the front-back direction, and the direction perpendicular to the up-down direction and the front-back direction, respectively, is also referred to as the left-right direction.

[0079] As illustrated in FIG. 5, in the heating body (1250A) according to the first modified example, a rib portion (1240) is further provided on at least one of the first conductive portion (1220) or the second conductive portion (1230).

[0080] Specifically, the rib portion (1240) is formed by bending the edges on both sides of the short direction (i.e., left-right direction) of the long shape of the first conductive portion (1220) along the outer shape of the resistance heating portion (1210). For example, if the first conductive portion (1220) is provided in a pentagonal shape that is extended in the vertical direction, the rib portion (1240) may be formed by bending the edges on both sides of the extended left-right direction of the first conductive portion (1220).

[0081] By providing a rib portion (1240), the first conductive portion (1220) can suppress deformation in the front-rear direction because the strength in the front-rear direction of the rib portion (1240) is increased. Accordingly, since the heating portion body (1250A) is less likely to deform in the normal direction (i.e., the front-rear direction) of the main surface of the first conductive portion (1220), the possibility of the heating portion body (1250A) folding in the corresponding normal direction can be reduced. According to the heating portion body (1250A) according to the first deformation example, the heating portion (121) can increase the strength in the front-rear direction, so the possibility of the heating portion (121) folding when inserted into the stick-type substrate (150) can be reduced.

[0082] (2nd variation)

[0083] FIG. 6 is an exploded perspective view of a heating body (1250B) according to a second modified example. In FIG. 6, as in FIG. 2 and FIG. 3, the up-down direction, the front-back direction, and the left-right direction are defined. Specifically, the direction of the tip side where the heating body (1250B) is inserted into the interior of the stick-shaped substrate (150) is also referred to as the up direction, and the direction opposite to the up direction is also referred to as the down direction. In addition, the direction in which the first conductive part (1220), the resistance heating part (1210), and the second conductive part (1230) are joined is also referred to as the front-back direction, and the direction perpendicular to the up-down direction and the front-back direction, respectively, is also referred to as the left-right direction.

[0084] As illustrated in FIG. 6, in the heating body (1250B) according to the second modified example, a first rib portion (1241) is provided in the first conductive portion (1220), and a second rib portion (1242) is provided in the second conductive portion (1230).

[0085] Specifically, the first rib portion (1241) is formed by bending one edge portion of the long shape in the short direction (i.e., left-right direction) of the first conductive portion (1220) along the outer shape of the resistance heating portion (1210). The second rib portion (1242) is formed by bending the other edge portion of the long shape in the short direction (i.e., left-right direction) of the second conductive portion (1230) along the outer shape of the resistance heating portion (1210). For example, when the first conductive portion (1220) and the second conductive portion (1230) are provided in a pentagonal shape that is extended in the vertical direction, the first rib portion (1241) may be formed by bending the edge portion of the extended right side of the first conductive portion (1220). Additionally, the second rib portion (1242) may be formed by bending the edge portion of the extended left side of the second conductive portion (1230).

[0086] By providing the first rib portion (1241) and the second rib portion (1242), the first conductive portion (1220) and the second conductive portion (1230) can suppress deformation in the front-rear direction because the strength in the front-rear direction of the first rib portion (1241) and the second rib portion (1242) is higher. Accordingly, the heating portion body (1250B) is less likely to deform in the normal direction (i.e., front-rear direction) of the main surface of the first conductive portion (1220) and the second conductive portion (1230), so the possibility of the heating portion (121) folding in the corresponding normal direction can be reduced.

[0087] That is, the first rib portion (1241) and the second rib portion (1242) may each be provided on both sides of a pair of electrode plates (the first conductive portion (1220) and the second conductive portion (1230)). Even in such a case, the heating portion body (1250B) according to the second modified example, like the heating portion body (1250A) according to the first modified example, can reduce the possibility of the heating portion (121) folding when inserted into the stick-type substrate (150).

[0088] (Third Variation Example)

[0089] FIG. 7 is an exploded perspective view of a heating body (1250C) according to a third modified example. In FIG. 7, as in FIG. 2 and FIG. 3, the up-down direction, the front-back direction, and the left-right direction are defined. Specifically, the direction of the tip side where the heating body (1250C) is inserted into the interior of the stick-shaped substrate (150) is also referred to as the up direction, and the direction opposite to the up direction is also referred to as the down direction. Additionally, the direction in which the first conductive part (1220), the resistance heating part (1210), and the second conductive part (1230) are joined is also referred to as the front-back direction, and the direction orthogonal to the up-down direction and the front-back direction, respectively, is also referred to as the left-right direction.

[0090] As illustrated in FIG. 7, in the heating body (1250C) according to the third variant, in addition to the rib portion (1240), a leading rib portion (1243) is further provided along a shape that protrudes at an angle toward the leading side of the resistance heating portion (1210) (i.e., toward the upward direction).

[0091] Specifically, the tip rib portion (1243) is formed by bending the edge portions of each side of the upper side of the first conductive portion (1220) (i.e., the tip side of the resistance heating portion (1210)) along the outer shape of the resistance heating portion (1210). For example, if the first conductive portion (1220) is provided in a pentagonal shape that is extended in the vertical direction, the tip rib portion (1243) may be formed by bending the edge portions of two sides of the upper side of the first conductive portion (1220). In such a case, the first conductive portion (1220) has rib portions (1240) or tip rib portions (1243) formed on four sides excluding the lower side of the pentagonal shape.

[0092] By providing a tip rib portion (1243), the first conductive portion (1220) can cover the pointed shape, like a knife tip, formed on the tip side (i.e., the upward side) of the resistance heating portion (1210) with the tip rib portion (1243). Accordingly, when the heating portion (121) is inserted into the stick-type substrate (150), the heating portion body (1250C) can prevent the first conductive portion (1220) and the second conductive portion (1230) from being peeled off from the resistance heating portion (1210) by applying force between the resistance heating portion (1210), the first conductive portion (1220), and the second conductive portion (1230). Therefore, the heating portion body (1250C) can further improve the durability of the heating portion (121) for insertion into the stick-type substrate (150).

[0093] Although suitable embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to these examples. It is evident to those skilled in the art that various modifications or alterations may be made within the scope of the technical concept described in the claims, and these are naturally understood to fall within the technical scope of the present invention.

[0094] In addition, the following configurations also fall within the technical scope of the present invention.

[0095] (1) An aerosol generating system comprising a resistance heating element that has a porous structure in at least part and heats an aerosol generating material from the inside, and a pair of plate-shaped conductive elements provided on opposite sides of the resistance heating element.

[0096] (2) The above porous structure comprises a plurality of regions with different porosities, an aerosol generating system as described in (1).

[0097] (3) The above resistance heating element comprises barium titanate, an aerosol generating system as described in (1) or (2).

[0098] (4) The above resistance heating element further comprises less than 0.3 g / cm³ of carbon, in the aerosol generating system described in (3).

[0099] (5) An aerosol generating system described in any one of (1) to (4), having an insertion part into which the conductive part is inserted, and further including a fixing part that fixes the conductive part to a housing.

[0100] (6) The above fixing part is made of super engineering plastic, and the aerosol generating system described in (5) above.

[0101] (7) The above fixed part is a circular or rectangular flat plate shape, an aerosol generating system as described in (5) or (6).

[0102] (8) An aerosol generating system described in any one of (1) to (7), wherein the conductive part is composed of metal or carbon.

[0103] (9) The above-described aerosol generating system, in which the above-described conductive part is composed of a nickel-containing iron alloy. (8)

[0104] (10) The above resistance heating part is in the shape of a flat plate, an aerosol generating system described in any one of (1) to (9).

[0105] (11) The aerosol generating system described in (10), wherein the thickness of the plate shape is less than 1 / 4 of the width of the plate shape.

[0106] (12) An aerosol generating system described in any one of (1) to (11), further comprising the aerosol generating substrate in which the resistance heating part and the conductive part are inserted.

[0107] (13) At least one of the above conductive portions includes a rib portion formed by bending the edge end of the conductive portion along the outer shape of the resistive heating portion from the opposite side of the resistive heating portion, in any one of (1) to (12) an aerosol generating system.

[0108] (14) The above resistance heating element is configured to protrude at an angle toward the tip side inserted into the interior of the aerosol generating material, in any one of (1) to (13) of the aerosol generating system.

[0109] (15) At least one of the above conductive portions further comprises a leading rib portion formed by bending the edge end of the conductive portion along the shape of the leading end of the resistance heating portion, in the aerosol generating system described in (14).

[0110] (16) The above resistance heating part and the above conductive part are bonded with a conductive adhesive paste, an aerosol generating system as described in any one of (1) to (15).

[0111] (17) The above resistance heating element is a PTC heater, an aerosol generating system described in any one of (1) to (16).

[0112] (18) An aerosol generating system described in any one of (1) to (17), wherein the heating temperature of the resistance heating part is less than 350℃. Explanation of the symbols

[0113] 100: Suction device 121: Heating part 140: Reception Department 141: Interior space 142: Frog 143: Low 150: Stick-type material 151: Ministry of Economy and Finance 152: Intake part 1210: Resistance heating element 1220: First Challenge Section 1230: Second Challenge Section 1240: Livbu 1241: The 1st Libe 1242: The 2nd Libe 1243: Line rib 1250: Heating unit main body 1260: Fixed part 1261: Insertion

Claims

Claim 1 An aerosol generating system comprising a resistance heating member having a porous structure in at least a portion and heating an aerosol generating substrate from the inside, and a pair of plate-shaped conductive members provided on mutually opposing surfaces of the resistance heating member, wherein the resistance heating member is provided by connecting a plurality of heaters having porous structures with different porosities in the longitudinal direction of the resistance heating member. Claim 2 In claim 1, the resistance heating element comprises barium titanate, an aerosol generating system. Claim 3 In paragraph 2, the above resistance heating element further comprises carbon of less than 0.3 g / cm³, an aerosol generating system. Claim 4 An aerosol generating system according to any one of claims 1 to 3, having an insertion part into which the conductive part is inserted, and further comprising a fixing part for fixing the conductive part to a housing. Claim 5 In paragraph 4, the above-mentioned fixing part is composed of super engineering plastic, an aerosol generating system. Claim 6 In paragraph 4, the above-mentioned fixed part is in the shape of a circular or rectangular flat plate, an aerosol generating system. Claim 7 An aerosol generating system according to any one of claims 1 to 3, wherein the conductive part is composed of metal or carbon. Claim 8 In claim 7, the above-mentioned conductive part is composed of a nickel-containing iron alloy, an aerosol generating system. Claim 9 An aerosol generating system according to any one of claims 1 to 3, wherein the resistance heating element is in the shape of a flat plate. Claim 10 An aerosol generating system according to claim 9, wherein the thickness of the plate shape is less than 1 / 4 of the width of the plate shape. Claim 11 An aerosol generating system according to any one of claims 1 to 3, further comprising the aerosol generating substrate in which the resistance heating element and the conductive element are inserted therein. Claim 12 An aerosol generating system according to any one of claims 1 to 3, wherein at least one of the conductive portions comprises a rib portion formed by bending the edge end of the conductive portion along the outer shape of the resistive heating portion from the mutually opposing surfaces of the resistive heating portion. Claim 13 An aerosol generating system according to any one of claims 1 to 3, wherein the resistance heating element is configured to protrude at an angle toward the tip side inserted into the interior of the aerosol generating substrate. Claim 14 An aerosol generating system according to claim 13, wherein at least one of the conductive portions further comprises a leading rib portion formed by bending the edge end of the conductive portion along the shape of the leading end of the resistance heating portion. Claim 15 An aerosol generating system according to any one of claims 1 to 3, wherein the resistance heating part and the conductive part are bonded with a conductive adhesive paste. Claim 16 An aerosol generating system, wherein, in any one of paragraphs 1 to 3, the resistance heating element is a PTC heater. Claim 17 An aerosol generating system according to any one of claims 1 to 3, wherein the heating temperature of the resistance heating part is less than 350℃. Claim 18 delete

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