Heater assembly for aerosol-generating device and aerosol-generating device comprising same

Abstract

The heater assembly for an aerosol-generating device comprises: a main body in which an accommodation space for accommodating an aerosol-generating article is formed; a coil that applies a magnetic field to heat a susceptor disposed in the accommodation space in order to heat the aerosol-generating article; the airflow channel cover is positioned on the outer side of the main body and forms an airflow channel through which air passes; the pressure sensor is arranged on the air flow channel cover and is used for sensing the pressure change in the air flow channel; and a moisture sensing sensor disposed on a support unit supporting the coil and configured to sense moisture of the aerosol-generating article housed in the housing space.

Description

Technical Field

[0001] The embodiment relates to a heater assembly for an aerosol generating device that can improve the utilization of space for components such as sensors for configuring the moisture of an aerosol generating article and enable smooth air flow movement, and an aerosol generating device including the same. Background Art

[0002] Recently, there has been an increasing demand for technologies to replace the method of supplying aerosol by burning conventional cigarettes. For example, related research on methods such as generating aerosol from an aerosol generating substance in a liquid state or a solid state, or after generating vapor from an aerosol generating substance in a liquid state and then passing the generated vapor through a solid perfume medium to supply a scented aerosol is continuously being conducted.

[0003] In an example of an aerosol generating device, it may include an induction heating type aerosol generating device that heats an aerosol generating substance by generating a magnetic field to heat a receptor. Summary of the Invention

[0004] Problems to be Solved by the Invention

[0005] An induction heating type aerosol generating device may include a sensor for sensing the moisture of an aerosol generating article, a sensor for sensing the type of an aerosol generating article, and a sensor for sensing a pressure change inside an air flow passage through which air passes.

[0006] To configure these sensors inside the aerosol generating device, a specific space needs to be ensured in advance, and in order to improve the space utilization inside the aerosol generating device while ensuring the optimal functions of each sensor, each sensor needs to be configured (installed) in an appropriate position.

[0007] In addition, in order for a user to inhale aerosol through an aerosol generating article, external air needs to flow into the inside of the aerosol generating device. For this purpose, the inside of the aerosol generating device may include an air flow passage as a path for air movement, but when air cannot move smoothly in the air flow passage, the user cannot easily inhale aerosol through the aerosol generating article.

[0008] An object of the present disclosure is to provide a heater assembly for an aerosol generating device that can improve the utilization of space for configuring components such as sensors inside the aerosol generating device, and an aerosol generating device including the same.

[0009] In addition, an object of the present disclosure is to provide a heater assembly for an aerosol generating device that has a compact structure while accommodating various components, and an aerosol generating device including the same.

[0010] In addition, an object of the present disclosure is to provide a heater assembly for an aerosol generating device having a structure that allows a user to easily inhale an aerosol by smoothly flowing air through an air flow passage, and an aerosol generating device including the same.

[0011] The technical problems to be solved by the above embodiments are not limited to the above problems, and those skilled in the art will clearly understand the problems not mentioned from the present disclosure and the drawings.

[0012] Means for Solving the Problems

[0013] A heater assembly for an aerosol generating device according to an embodiment includes: a body forming an accommodation space for accommodating an aerosol generating article; a coil that applies a magnetic field to heat the aerosol generating article, causing a receptor disposed in the accommodation space to generate heat; an air flow passage cover located outside the body and forming an air flow passage through which air passes; a pressure sensor disposed in the air flow passage cover for sensing a change in pressure inside the air flow passage; and a moisture sensing sensor disposed in a support unit that supports the coil for sensing moisture of the aerosol generating article accommodated in the accommodation space.

[0014] An aerosol generating device according to an embodiment includes: a heater assembly for an aerosol generating device according to the above embodiment; a battery that supplies power to the heater assembly for the aerosol generating device; and a control unit that controls the operation of the heater assembly for the aerosol generating device.

[0015] Advantageous Effects of the Invention

[0016] The heater assembly for an aerosol generating device and the aerosol generating device according to various embodiments of the present disclosure can be miniaturized by improving the utilization rate of the space for arranging a plurality of components, and can have a compact structure while accommodating various components.

[0017] In addition, the heater assembly for an aerosol generating device and the aerosol generating device according to various embodiments of the present disclosure can allow a user to easily inhale an aerosol by making the flow of air in the air flow passage smooth.

[0018] The effects of the technical idea of the present disclosure are not limited to the effects mentioned above, and those skilled in the art can clearly understand other effects not mentioned from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective view of an aerosol generating device according to an embodiment and an aerosol generating article inserted therein.

[0020] Figure 2 Front perspective view of a heater assembly for an aerosol generating device according to an embodiment.

[0021] Figure 3 Rear perspective view of a heater assembly for an aerosol generating device according to an embodiment.

[0022] Figure 4 Is Figure 2 Exploded perspective view of a heater assembly for an aerosol generating device according to an embodiment as shown.

[0023] Figure 5 Is for showing the state in which an aerosol generating article is inserted into the heater assembly, and is a cross-sectional view of the heater assembly for an aerosol generating device according to an embodiment cut along the I-I' section line of Figure 2 .

[0024] Figure 6 Is for showing the state in which an aerosol generating article is inserted into the heater assembly, and is a cross-sectional view of the heater assembly for an aerosol generating device according to an embodiment cut along the II-II' section line of Figure 2 .

[0025] Figure 7 Exploded perspective view of a retainer, a first cover, a temperature sensing unit, and a shielding unit included in a heater assembly for an aerosol generating device according to an embodiment.

[0026] Figure 8 Exploded perspective view of a first cover, an air flow channel cover, and a mounting member included in a heater assembly for an aerosol generating device according to an embodiment.

[0027] Figure 9 Rear perspective view of a heater assembly for an aerosol generating device according to an embodiment showing the coupling relationship of a sealing portion, a second cover, an air flow channel cover, and a support unit.

[0028] Figure 10 Combined perspective view of a support unit, a heater, a housing sensing unit, and a temperature sensing unit included in a heater assembly for an aerosol generating device according to an embodiment.

[0029] Figure 11 And Figure 12 Is a view showing an example of an aerosol generating article according to an embodiment.

[0030] Figure 13 Block diagram of an aerosol generating device according to another embodiment. Detailed description

[0031] A heater assembly for an aerosol generating device according to an embodiment may include: a main body having an accommodation space for accommodating an aerosol generating article; a coil that applies a magnetic field to heat the aerosol generating article, causing a receptor disposed in the accommodation space to generate heat; an air flow channel cover located outside the main body and having an air flow channel through which air passes; a pressure sensor disposed in the air flow channel cover for sensing a pressure change inside the air flow channel; and a moisture sensing sensor disposed in a support unit that supports the coil for sensing moisture of the aerosol generating article accommodated in the accommodation space.

[0032] A heater assembly for an aerosol generating device according to an embodiment may further include: an article sensing sensor disposed at a position spaced apart from the pressure sensor on the air flow channel cover and for sensing the type of the aerosol generating article accommodated in the accommodation space.

[0033] The air flow channel cover may include: a sensor accommodation part for accommodating at least one of the pressure sensor and the article sensing sensor.

[0034] The pressure sensor and the article sensing sensor may be mounted together on one mounting member disposed on the air flow channel cover.

[0035] A heater assembly for an aerosol generating device according to an embodiment may further include: a sensor protection cover coupled to the air flow channel cover so as to cover at least a part of the pressure sensor.

[0036] An air inlet through which air flows may be formed in the air flow channel cover, and the air inlet may be disposed spaced apart from a part where the aerosol generating article is inserted.

[0037] The air flow channel communicates with the accommodation space, and at least a part of the air moving through the air flow channel may pass through the aerosol generating article accommodated in the accommodation space and be discharged to the outside.

[0038] The moisture sensing sensor may be arranged in a manner corresponding to a segment of the aerosol generating article containing an aerosol generating substance.

[0039] At least a part of the moisture sensing sensor may include a curved surface.

[0040] A heater assembly for an aerosol generating device according to an embodiment may further include: a sensor bracket disposed outside the support unit. The moisture sensing sensor may be coupled to the sensor bracket and coupled to the support unit.

[0041] The heater assembly for an aerosol generating device according to an embodiment may further include: a first lid coupled to the body and including an article insertion portion for inserting the aerosol generating article.

[0042] The first lid may include: a lid portion heat insulating member extending along the extension direction of the coil and disposed between the coil and the body.

[0043] The heater assembly for an aerosol generating device according to an embodiment may further include: a temperature sensing unit disposed inside the body to sense the temperature of the coil. The first lid may further include: an avoidance groove for the temperature sensing unit.

[0044] The heater assembly for an aerosol generating device according to an embodiment may further include: a holder having an insertion hole and a ridge, the insertion hole being coupled to the first lid and communicating with the article insertion portion so that the aerosol generating article can be accommodated in the accommodation space, and the ridge protruding toward the insertion hole to support the aerosol generating article.

[0045] An aerosol generating device according to an embodiment may include: a heater assembly for an aerosol generating device according to an embodiment; a battery for supplying power to the heater assembly for the aerosol generating device; and a control unit for controlling the operation of the heater assembly for the aerosol generating device.

[0046] Regarding the terms used to describe various embodiments, considering the functions in this specification, general terms that are currently widely used are selected, but the meanings of the terms may change according to the intentions of those skilled in the art, judicial precedents, the emergence of new technologies, etc. Additionally, in specific cases, there are also terms arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the description part of the corresponding invention. Therefore, the terms used in the various embodiments of the present disclosure should be defined based on the meanings of the terms and the descriptions provided herein.

[0047] Throughout the specification, when a certain part "includes" a certain component, unless there is a description of the opposite characteristic, this part may further include other components, rather than excluding other components. In addition, the terms "-part", "-device", and "module" described in the specification mean units for processing at least one function and operation, and can be implemented by hardware components or software components and their combinations.

[0048] As used in this specification, expressions such as "at least any one of" modify the entire list of elements when following the list of elements, rather than modifying individual elements of the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, b, c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0049] In one embodiment, the aerosol generating device may be a device that generates an aerosol by electrically heating a cigarette accommodated in an internal space.

[0050] The aerosol generating device may include a heater. In one embodiment, the heater may be a resistive heater. For example, the heater may include a conductive track, and when an electric current flows through the conductive track, the heater may be heated.

[0051] The heater may include a tubular heating member, a plate-shaped heating member, a needle-shaped heating member, or a rod-shaped heating member, and may heat the inside or outside of the cigarette according to the shape of the heating member.

[0052] The cigarette may include a tobacco rod and a filter rod. The tobacco rod may be made of a sheet material, may be made of a strand material, or may be made of tobacco leaves obtained by cutting thin tobacco sheets. Additionally, the tobacco rod may be surrounded by a heat-conductive substance. For example, the heat-conductive substance may be a metal foil such as aluminum foil, but is not limited thereto.

[0053] The filter rod may be a cellulose acetate filter. The filter rod may be composed of at least one segment. For example, the filter rod may include a first segment for cooling the aerosol and a second segment for filtering a predetermined component contained in the aerosol.

[0054] In other embodiments, the aerosol generating device may be a device that generates an aerosol using a cartridge containing an aerosol generating substance.

[0055] The aerosol generating device may include a cartridge containing an aerosol generating substance and a body that supports the cartridge. The cartridge may be detachably coupled to the body, but is not limited thereto. The cartridge may be integrally formed or assembled with the body, and may also be fixed to prevent being detached by the user. The cartridge may be installed in the body in a state where the aerosol generating substance is accommodated therein. However, it is not limited thereto, and the aerosol generating substance may also be injected into the cartridge in a state where the cartridge is coupled to the body.

[0056] The cartridge may contain an aerosol generating substance in any one of various states such as a liquid state, a solid state, a gaseous state, a gel state, and the like. The aerosol generating substance may include a liquid composition. For example, the liquid composition may be a liquid including a tobacco-containing substance containing a volatile tobacco flavor component, or may be a liquid including a non-tobacco substance.

[0057] The cartridge operates based on an electrical signal or a wireless signal transmitted from the main body, etc., and can perform the function of generating aerosol by converting the phase of the aerosol - generating substance inside the cartridge into a gaseous state. The aerosol can refer to a gas in a state where vaporized particles generated by the aerosol - generating substance are mixed with air.

[0058] In yet another embodiment, the aerosol - generating device can generate aerosol by heating a liquid composition, and the generated aerosol can be delivered to the user through a cigarette. That is, the aerosol generated by the liquid composition can move along the air - flow channel of the aerosol - generating device, and the air - flow channel can be configured to allow the aerosol to pass through the cigarette and be delivered to the user.

[0059] In yet another embodiment, the aerosol - generating device can be a device that uses ultrasonic vibration to generate aerosol from an aerosol - generating substance. At this time, the ultrasonic vibration method can refer to a method of atomizing the aerosol - generating substance by ultrasonic vibration generated by a vibrator to generate aerosol.

[0060] The aerosol - generating device can include a vibrator, and can generate short - period vibrations through the vibrator to atomize the aerosol - generating substance. The vibration generated by the vibrator can be ultrasonic vibration, and the frequency band of the ultrasonic vibration can be in the range of about 100 kHz to about 3.5 MHz, but is not limited thereto.

[0061] The aerosol - generating device can further include a core material that absorbs the aerosol - generating substance. For example, the core material can be configured to surround at least a part of the vibrator region or contact at least a part of the vibrator region.

[0062] As the vibrator is applied with a voltage (e.g., an alternating voltage), the vibrator can generate heat and / or ultrasonic vibration, and the heat and / or ultrasonic vibration generated by the vibrator can be transferred to the aerosol - generating substance absorbed by the core material. The aerosol - generating substance absorbed by the core material can be converted into a gaseous phase by the heat and / or ultrasonic vibration transmitted by the vibrator, and as a result, aerosol can be generated.

[0063] For example, the viscosity of the aerosol - generating substance absorbed by the core material may be reduced due to the heat generated by the vibrator, and since the aerosol - generating substance whose viscosity is reduced due to the ultrasonic vibration generated by the vibrator is granulated, aerosol can be generated, but is not limited thereto.

[0064] In yet another embodiment, the aerosol - generating device can be a device that generates aerosol by induction heating an aerosol - generating article accommodated in the aerosol - generating device.

[0065] An aerosol generating device may include a susceptor and a coil. In one embodiment, the coil may apply a magnetic field to the susceptor. As power is supplied to the coil of the aerosol generating device, a magnetic field may be formed inside the coil. In one embodiment, the susceptor may be a magnetic body that generates heat relying on an external magnetic field. The susceptor is located inside the coil and generates heat as the magnetic field is applied, thereby heating the aerosol generating article. Additionally, optionally, the susceptor may be located within the aerosol generating article.

[0066] In yet another embodiment, the aerosol generating device may further include a cradle.

[0067] The aerosol generating device may form a system together with a separate cradle. For example, the cradle may charge the battery of the aerosol generating device. Additionally, the heater may be heated in a state where the cradle is combined with the aerosol generating device.

[0068] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. The present disclosure may be implemented in a form that can be realized in the aerosol generating devices of the foregoing various embodiments, or may be implemented and realized in various different forms, and is not limited to the embodiments described herein.

[0069] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0070] Figure 1 is a perspective view of an aerosol generating device and an aerosol generating article inserted therein according to an embodiment.

[0071] Referring to Figure 1 , an aerosol generating device 1 according to an embodiment may include a heater assembly 10, a battery 20, a control unit 30, a vaporizer 40, and an aerosol generating device body 50. However, the components of the aerosol generating device 1 are not limited thereto, and according to an embodiment, at least one of the above components (for example, the vaporizer 40) may be omitted, or other components may be added.

[0072] An aerosol generating device 1 according to an embodiment heats an aerosol generating article 2 accommodated in the aerosol generating device 1 by induction heating, thereby generating an aerosol. The induction heating method may refer to a method of generating heat in a magnetic body that generates heat relying on an external magnetic field by applying an alternating magnetic field whose direction periodically changes.

[0073] When an alternating magnetic field is applied to a magnetic body, energy losses caused by eddy current loss and hysteresis loss may occur in the magnetic body, and the lost energy can be released from the magnetic body as heat energy. The greater the amplitude or frequency of the alternating magnetic field applied to the magnetic body, the more heat energy can be released from the magnetic body. The aerosol generating device 1 according to an embodiment releases heat energy from the magnetic body by applying an alternating magnetic field to the magnetic body, and the heat energy released from the magnetic body can be transferred to the aerosol generating article.

[0074] The magnetic body that generates heat by relying on an external magnetic field can be a susceptor.

[0075] According to an embodiment, the susceptor can be disposed inside the heater assembly 10 and can be disposed so as to surround the aerosol generating article 2 accommodated in the accommodation space. In this case, the susceptor as a whole can be formed in the shape of a hollow cylinder, but the shape is not limited thereto.

[0076] According to other embodiments, the susceptor can also be disposed inside the aerosol generating article 2 accommodated in the aerosol generating device 1. In this case, the susceptor can be included in the aerosol generating article 2 in the form of fragments, flakes, or strips.

[0077] At least a part of the susceptor is formed of a ferromagnetic substance. For example, the susceptor can include metal or carbon. The susceptor can include at least one of ferrite, ferromagnetic alloy, stainless steel, and aluminum. In addition, the susceptor can include at least one of ceramics such as graphite, molybdenum, silicon carbide, niobium, nickel alloy, metal film, zirconia, transition metals such as Ni or Co, and metalloids such as B or P.

[0078] An aerosol generating device 1 according to an embodiment can accommodate an aerosol generating article 2. A space for accommodating the aerosol generating article 2 can be formed in the aerosol generating device 1 according to an embodiment. Among them, a heater assembly 10 (hereinafter referred to as "heater assembly") of the aerosol generating device according to an embodiment can be disposed in the space of the aerosol generating device 1 for accommodating the aerosol generating article 2. For example, the inside of the heater assembly 10 can include a cylindrical accommodation space for accommodating the aerosol generating article 2. Therefore, when the aerosol generating article 2 is accommodated in the aerosol generating device 1, the aerosol generating article 2 can be accommodated in the accommodation space of the heater assembly 10. A specific description of the aerosol generating article 2 accommodated in the aerosol generating device 1 according to an embodiment will be described later.

[0079] The heater assembly 10 according to an embodiment can heat the aerosol generating article 2 accommodated in the aerosol generating device 1. As described above, the heater assembly 10 according to an embodiment can heat the aerosol generating article 2 by induction heating. According to an embodiment, the heater assembly 10 can heat the susceptor by applying an alternating magnetic field to the susceptor.

[0080] The heater assembly 10 according to an embodiment can surround at least a part of the aerosol generating article 2 accommodated in the aerosol generating device 1. For example, the heater assembly 10 according to an embodiment can surround the tobacco medium included in the aerosol generating article 2. Therefore, heat can be more effectively transferred from the heater assembly 10 to the tobacco medium.

[0081] The battery 20 can supply power to the aerosol generating device 1. For example, the battery 20 can supply power to the coil (or can be referred to as "heater") of the heater assembly 10. As another example, the battery 20 can also supply power required for the operation of other components of the aerosol generating device 1 (for example: the control unit 30, etc.).

[0082] The battery 20 can include: a battery unit that supplies direct current to the coil of the heater assembly 10; and a conversion unit that converts the direct current supplied from the battery unit into alternating current supplied to the coil of the heater assembly 10.

[0083] The battery unit can supply direct current to the aerosol generating device 1. The battery unit can be a lithium iron phosphate (LiFePO4) battery, but is not limited thereto. For example, the battery unit can be a lithium cobalt oxide (LiCoO2) battery, a lithium titanate battery, a lithium polymer (LiPoly) battery, etc.

[0084] The conversion unit may include: a low-pass filter for filtering the direct current supplied by the battery and outputting an alternating current supplied to the heater assembly 10. The conversion unit may also include: an amplifier for amplifying the direct current supplied by the battery unit. For example, the conversion unit may be implemented by a low-pass filter constituting a load network of a class-D amplifier.

[0085] The control unit 30 may control the overall operation of the aerosol generating device 1. The control unit 30 may be implemented as an array of multiple logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory storing a program executable by the microprocessor, but is not limited thereto.

[0086] According to an embodiment, the control unit 30 may control the power supplied to the heater assembly 10. Among them, the control object of the control unit 30 may be the coil of the heater assembly 10. The control unit 30 may control the battery 20 to adjust the power supplied to the coil of the heater assembly 10. For example, the control unit 30 may perform control to maintain the temperature of the coil for heating the aerosol generating article 2 constant based on the temperature of the coil of the heater assembly 10.

[0087] The vaporizer 40 may generate an aerosol by heating the aerosol generating substance in a liquid state, and the generated aerosol may be transmitted to the user through the aerosol generating article 2. In other words, the aerosol generated by the vaporizer 40 may move along the air flow channel of the aerosol generating device 1, and the air flow channel may be configured to enable the aerosol generated by the vaporizer 40 to be transmitted to the user through the aerosol generating article 2.

[0088] For example, the vaporizer 40 may include a storage unit for storing the aerosol generating substance in a liquid state, a liquid transfer device, and a heating component, but is not limited thereto. For example, the storage unit, the liquid transfer device, and the heating component may be included in the aerosol generating device 1 as separate modules.

[0089] The storage unit may store the aerosol generating substance in a liquid state. For example, the aerosol generating substance in a liquid state may be a liquid containing a tobacco-containing substance containing a volatile tobacco flavor component, or may be a liquid containing a non-tobacco substance. The storage unit may be made in a manner that can be detachably attached to the vaporizer 40, or may be integrally made with the vaporizer 40.

[0090] For example, the aerosol - forming material may include water, solvents, ethanol, plant extracts, fragrances, flavorants, or a vitamin mixture. The fragrance may include menthol, peppermint, spearmint oil, various fruit fragrance components, etc., but is not limited thereto. The flavorant may contain components capable of providing a variety of scents or flavors to the user. The vitamin mixture may be a substance mixed with at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but is not limited thereto. Additionally, the aerosol - forming material may contain aerosol - forming agents such as glycerol and propylene glycol.

[0091] The liquid delivery device can deliver the aerosol - forming material in the storage part to the heating element. For example, the liquid delivery device may be a wick such as cotton fiber, ceramic fiber, glass fiber, porous ceramic, etc., but is not limited thereto.

[0092] The heating element is an element for heating the aerosol - forming material delivered by the liquid delivery device. For example, the heating element may be a metal heating wire, a metal hot plate, a ceramic heater, etc., but is not limited thereto. Additionally, the heating element may be composed of a conductive heating wire such as a nickel - chromium wire and may be configured to be wound around the liquid delivery device. The heating element can be heated by supplying power and can heat the aerosol - forming material by transferring heat to the aerosol - forming material in contact with the heating element. As a result, an aerosol can be generated.

[0093] For example, the vaporizer 40 may be referred to as a cartomizer or an atomizer, but is not limited thereto.

[0094] When the aerosol - generating device 1 according to an embodiment further includes a vaporizer 40, the battery 20 can supply power to heat at least one of the heater assembly 10 or the vaporizer 40, and the control unit 30 can control the power supplied to at least one of the heater assembly 10 or the vaporizer 40.

[0095] When the aerosol - generating article 2 is inserted into the aerosol - generating device 1 according to an embodiment, the aerosol - generating device 1 operates the heater assembly 10 and / or the vaporizer 40, so that the aerosol - generating article 2 and / or the vaporizer 40 can generate an aerosol. The aerosol generated by the heater assembly 10 and / or the vaporizer 40 can be delivered to the user through the aerosol - generating article 2.

[0096] The aerosol generating device body 50 may form the overall shape of the aerosol generating device 1 according to an embodiment. Components for the operation of the aerosol generating device 1 may be disposed inside the aerosol generating device body 50. For example, the above-described heater assembly 10, battery 20, control unit 30, and vaporizer 40 may be disposed inside the aerosol generating device 1. However, the heater assembly 10, battery 20, control unit 30, and vaporizer 40 are merely examples of the components disposed inside the aerosol generating device 1, and other components (e.g., user interface, sensor, etc.) may also be disposed inside the aerosol generating device 1 in addition to the above-described components.

[0097] An air inlet 50a for allowing external air to flow in may be formed in the aerosol generating device body 50.

[0098] Hereinafter, with reference to the drawings, a heater assembly according to an embodiment will be specifically described.

[0099] Figure 2 It is a front perspective view of a heater assembly for an aerosol generating device according to an embodiment.

[0100] Referring to Figure 2 , the heater assembly 10 according to an embodiment may include a main body 100, a holder 150, a first cover 200, a second cover 300, an air flow channel cover 350, a pressure sensor 400, and a mounting member 450.

[0101] An accommodation space for accommodating the aerosol generating article 2 may be formed in the internal space of the main body 100. Among them, a heater may be disposed in the accommodation space of the main body 100 for accommodating the aerosol generating article 2. That is, the internal space of the main body 100 may be a space for accommodating the aerosol generating article 2 and forming a magnetic field for heating the aerosol generating article 2. When the aerosol generating article 2 is accommodated in the accommodation space of the main body 100, the heater may be disposed so as to surround the aerosol generating article 2. In addition, the "heater" described in this specification may refer to including a coil and a receptor.

[0102] The main body 100 may function as the main body of the heater assembly 10 for an aerosol generating device according to an embodiment, and the first cover 200 and the second cover 300 may be coupled to the main body 100. The first cover 200 and the second cover 300 are coupled to the main body 100 and may be supported by the main body 100. The main body 100 may be formed in an overall cylindrical shape with an empty interior, but its shape is not limited thereto.

[0103] The holder 150 is disposed on one side of the main body 100 (e.g., the +z direction), and can perform the function of supporting the aerosol generating article 2 accommodated in the accommodation space of the main body 100. An insertion hole 150a into which the aerosol generating article 2 can be inserted may be formed in the holder 150, and the insertion hole 150a may communicate with the accommodation space of the main body 100. The aerosol generating article 2 can be accommodated in the accommodation space of the main body 100 through the insertion hole 150a.

[0104] The first cover 200 can be coupled to one side of the main body 100 (e.g., the +z direction). The first cover 200 is disposed between the main body 100 and the holder 150, and can cover one side of the accommodation space of the main body 100.

[0105] The second cover 300 can be coupled to the other side of the main body 100 (e.g., the -z direction). The second cover 300 is coupled to the other side of the main body 100, and can cover the other side of the accommodation space of the main body 100.

[0106] The air flow channel cover 350 can be provided on the outer side of the main body 100 (e.g., the -x direction). An air flow channel may be formed in the air flow channel cover 350, and external air can pass through the air flow channel and move toward the inside of the heater assembly 10.

[0107] The pressure sensor 400 is disposed in the air flow channel cover 350, and can sense a change in pressure inside the air flow channel. The pressure sensor 400 may also be referred to as a suction sensor, and the pressure sensor 400 can sense a user's suction based on various physical changes in the air flow channel or air flow path. For example, the pressure sensor 400 can sense a user's suction based on any one of a temperature change, a flow change, a voltage change, and a pressure change.

[0108] The mounting member 450 can provide a space for mounting a sensor (e.g., the pressure sensor 400) included in the heater assembly 10. The mounting member 450 can be disposed in the air flow channel cover 350.

[0109] The pressure sensor 400 can be mounted on the mounting member 450. With the pressure sensor 400 mounted on one side of the mounting member 450, components of the aerosol generating device body can be mounted on the other side of the mounting member 450 and electrically connected to the components. Among them, the components may be at least one of a battery, a control unit, and a memory. Information related to the change in pressure inside the air flow channel sensed by the pressure sensor 400 or information related to a user's suction can be transmitted to at least one of the control unit and the memory. The mounting member 450 may include a metal material, such as a material such as copper (Cu).

[0110] Figure 3It is a rear perspective view of a heater assembly for an aerosol generating device according to an embodiment.

[0111] Referring to Figure 3 , the heater assembly 10 according to an embodiment may include a main body 100, a sealing part 180, a first cover 200, a second cover 300, an air flow channel cover 350, a pressure sensor 400, and a mounting member 450. At least one of the components of the heater assembly 10 may be the same as or similar to Figure 2 at least one of the components of the heater assembly 10 shown therein, and repeated descriptions will be omitted hereinafter.

[0112] A main body groove 100a may be formed on the main body 100. At least a part of the second cover 300 may be inserted into the main body groove 100a. For example, one side part of the second cover 300 (for example, the part facing the -x direction) may be inserted into the main body groove 100a.

[0113] The sealing part 180 may be combined with the second cover 300 and the air flow channel cover 350. The sealing part 180 may be disposed on one side of the second cover 300 (for example, the -z direction) and one side of the air flow channel cover 350 (for example, the -z direction). The sealing part 180 may perform the function of sealing one side of the second cover 300 and one side of the air flow channel cover 350. The sealing part 180 may include a material such as rubber.

[0114] Holes may be formed on the sealing part 180 and the second cover 300 for one end of the mounting member 450, a wire for supplying power to the heater, one end of a receiving sensing unit for sensing the insertion of an aerosol generating article, and one end of a temperature sensing unit for sensing the temperature of the heater to pass through.

[0115] Hereinafter, the coupling relationship of the heater assembly 10 according to an embodiment will be specifically described with reference to the drawings.

[0116] Figure 4 It is Figure 2 an exploded perspective view of a heater assembly for an aerosol generating device according to an embodiment shown in

[0117] Referring to Figure 4 , the heater assembly 10 according to an embodiment may include a main body 100, a holder 150, a sealing part 180, a first cover 200, a second cover 300, an air flow channel cover 350, a pressure sensor 400, a mounting member 450, an article sensing sensor 500, a moisture sensing sensor 550, a support unit 600, a coil 650, a receptor 700, a receiving sensing unit 750, a temperature sensing unit 800, and a shielding unit 850.

[0118] At least one of the components of the heater assembly 10 according to an embodiment may be the same asFigure 2 and Figure 3 at least one of the components of the heater assembly 10 for an aerosol generating device (e.g., the main body 100, the holder 150, the first lid 200, and the second lid 300) shown in Figure 3 is the same as or similar to that of the heater assembly 10 for an aerosol generating device shown in Figure 2 , and repeated descriptions will be omitted hereinafter.

[0119] In addition, the components of the heater assembly 10 for an aerosol generating device according to an embodiment are not limited thereto. According to the embodiment, at least one of the above components may be omitted, or other components may be added.

[0120] A first air flow covering and sealing member 380 and a second air flow covering and sealing member 390 may be coupled to the air flow passage lid 350. The first air flow covering and sealing member 380 may be disposed at a portion of the air flow passage lid 350 where air flows in. The first air flow covering and sealing member 380 may perform a function of preventing the inflowing air from leaking to a space other than the air flow passage (e.g., the space inside the aerosol generating device body). The first air flow covering and sealing member 380 may be disposed between the air flow passage lid 350 and the air flow inlet of the aerosol generating device body.

[0121] The second air flow covering and sealing member 390 may be disposed at a portion of the air flow passage lid 350 where air is discharged. The second air flow covering and sealing member 390 may perform a function of preventing the air in the air flow passage from leaking to a space other than the inner space of the support unit 600. The second air flow covering and sealing member 390 may be disposed between the second lid 300 and the air flow passage lid 350.

[0122] The first air flow covering and sealing member 380 and the second air flow covering and sealing member 390 may be embedded and coupled to the air flow passage lid 350, but the coupling method is not limited thereto. The first air flow covering and sealing member 380 and the second air flow covering and sealing member 390 may each include a rubber material.

[0123] The pressure sensor 400 may be disposed on the air flow passage lid 350 in a state of being mounted on the mounting member 450. The pressure sensor 400 may sense a pressure change in the air flow passage formed inside the air flow passage lid 350 in a state of being disposed on the air flow passage lid 350.

[0124] At least a portion of the pressure sensor 400 may be covered by the protective cover 410. The protective cover 410 may be coupled to the air flow passage lid 350 in a state of covering the pressure sensor 400. The protective cover 410 may perform a function of protecting the pressure sensor 400 from foreign substances flowing into the aerosol generating device 1 or external impacts applied to the aerosol generating device 1.

[0125] The mounting member 450 can be configured in the air flow passage cover 350. According to an embodiment, the pressure sensor 400 and the article sensing sensor 500 can be mounted together on the mounting member 450. That is, the pressure sensor 400 and the article sensing sensor 500 can be electrically connected to the components of the aerosol generating device body through a single mounting member 450. Therefore, since the pressure sensor 400 and the article sensing sensor 500 can be electrically connected to and operate with the said components through a single mounting member 450, the heater assembly 10 according to an embodiment can achieve a compact sensor configuration (mounting) structure.

[0126] The article sensing sensor 500 can sense the type of the aerosol generating article accommodated in the accommodation space. In an embodiment, the article sensing sensor 500 can sense the type of the aerosol generating article by sensing an identification mark disposed on the outer surface of the aerosol generating article or the like. The article sensing sensor 500 can sense and identify the identification mark by sensing the color, pattern, texture, etc. of the identification mark.

[0127] In an embodiment, the identification mark can be a color, texture, barcode or QR code (QR code, Quick Response code), and the article sensing sensor 500 can sense the color, texture, barcode or QR code and identify the type of the aerosol generating article.

[0128] According to the type of the aerosol generating article sensed by the article sensing sensor 500, the control unit can heat the aerosol generating article with a preset temperature curve. That is, when the information about the type of the aerosol generating article sensed by the article sensing sensor 500 is transmitted to the control unit or the memory, the memory can retrieve the preset temperature curve according to the input aerosol generating article, and the control unit can control the coil 650 to heat the aerosol generating article with the retrieved preset temperature curve.

[0129] The article sensing sensor 500 can include a color sensor, an optical scanner, a near field communication (NFC) reader, a radio-frequency identification (RFID) reader, etc. according to the type of the identification mark. However, there is no limitation on the article sensing sensor 500 as long as it can identify the identification mark.

[0130] In one embodiment, the article sensing sensor 500 may include a color sensor. The color sensor may include an RGB (Red Green Blue) sensor or an XYZ light sensor for measuring, discriminating, or differentiating the color of an identification mark. The RGB sensor includes light sources of three colors and can detect color information by reflecting light toward a target. The XYZ light sensor includes a photoelectric digital converter and can detect xy chromaticity coordinates according to the Commission Internationale de l'Eclairage (CIE) 1931 color space. Additionally, in order to measure color more accurately, the color sensor may include a filter that blocks infrared rays outside the visible light region.

[0131] In one embodiment, the article sensing sensor 500 may further include an infrared sensor, an ultrasonic sensor, a hardness measurement sensor (tensile-compressive force gauge), a capacitance sensor, and a resistance measurement circuit.

[0132] The article sensing sensor 500 may be disposed in the air flow passage cover 350 at a position spaced apart from the pressure sensor 400. That is, the article sensing sensor 500 may be mounted on the mounting member 450 at a position different from the pressure sensor 400.

[0133] The article sensing sensor 500 is disposed in the air flow passage cover 350 in a state of being mounted on the mounting member 450 and faces the direction of the accommodation space that houses the aerosol generating article. Therefore, the heater assembly 10 according to one embodiment has a configuration structure in which the article sensing sensor 500 can easily sense the identification mark of the aerosol generating article.

[0134] The moisture sensing sensor 550 is disposed in the support unit 600 inside the main body 100 and can sense the moisture of the aerosol generating article accommodated in the accommodation space. When the susceptor 700 heats the aerosol generating article by relying on the magnetic field generated by the coil 650, an aerosol can be generated. The generated aerosol may contain a part of moisture, and the moisture may wet or adhere to the aerosol generating article. In one embodiment, the moisture sensing sensor 550 can sense the amount of moisture wetting or adhering to the aerosol generating article and transmit it to the control unit or the memory. When the moisture sensing sensor 550 senses that the amount of moisture wetting or adhering to the aerosol generating article is equal to or more than a preset amount, the control unit may generate a signal for replacing the aerosol generating article or a signal indicating that the usage period has ended.

[0135] In one embodiment, the moisture sensing sensor 550 may sense a change in electromagnetic characteristics caused by an object (an aerosol-generating article) adjacent to the heater assembly 10. For example, the moisture sensing sensor 550 may be a capacitance sensor or a magnetic proximity sensor, but the type of the moisture sensing sensor 550 is not limited thereto.

[0136] At least a part of the moisture sensing sensor 550 may include a curved surface to correspond to the outer shape of the aerosol-generating article. Therefore, regardless of the accommodation direction of the aerosol-generating article accommodated in the accommodation space, the distance between the moisture sensing sensor 550 and the aerosol-generating article is substantially made constant along the circumferential direction of the moisture sensing sensor 550. Therefore, the moisture sensing sensor 550 can accurately sense the amount of moisture of the aerosol-generating article regardless of the accommodation direction of the aerosol-generating article.

[0137] The moisture sensing sensor 550 may be disposed on the support unit 600 through the sensor bracket 550a. That is, the moisture sensing sensor 550 may be combined with the sensor bracket 550a and disposed on the support unit 600. At least a part of the sensor bracket 550a may include a curved surface to correspond to the outer shape of the support unit 600. The moisture sensing sensor 550 may be attached to the sensor bracket 550a by a tape, but the coupling manner between the moisture sensing sensor 550 and the sensor bracket 550a is not limited thereto.

[0138] The support unit 600 is disposed inside the main body 100 and may perform a function of supporting the coil 650. When the aerosol-generating article is accommodated in the accommodation space of the main body 100, the support unit 600 may be disposed so as to surround the aerosol-generating article. The support unit 600 may be referred to as a bobbin and may generally form a cylindrical shape with an empty interior, but the shape is not limited thereto as long as it can support the coil 650.

[0139] The coil 650 is disposed inside the main body 100 and may heat the receptor 700 disposed in the accommodation space. When the aerosol-generating article is accommodated in the accommodation space of the main body 100, the coil 650 may be disposed so as to surround the aerosol-generating article.

[0140] The coil 650 can apply an alternating magnetic field to the susceptor. When the battery powers the coil, a magnetic field can be formed inside the coil. When an alternating current is applied to the coil, the direction of the magnetic field formed inside the coil may change continuously. When the susceptor is located inside the coil and exposed to the alternating magnetic field with a periodically changing direction, the susceptor can generate heat, and the aerosol-generating article accommodated in the accommodation space of the main body 100 can be heated by the susceptor. Therefore, aerosol can be generated.

[0141] The coil 650 can extend in the longitudinal direction of the aerosol-generating device 1 (e.g., the z-axis direction). For example, the coil 650 can extend with a length corresponding to the length of the support unit 600. Additionally, it can also extend with a length shorter than the length of the support unit 600.

[0142] The coil 650 can be arranged at a position suitable for applying an alternating magnetic field to the susceptor 700. For example, the coil 650 can be arranged on the support unit 600 in such a way that it is located at a position corresponding to the susceptor 700. By the size and arrangement of the coil 650 as described above, the efficiency of applying the alternating magnetic field of the coil 650 to the susceptor 700 can be improved.

[0143] When the amplitude or frequency of the alternating magnetic field formed by the coil 650 changes, the heating degree of the aerosol-generating article by the susceptor 700 may also change. Since the amplitude or frequency of the magnetic field formed by the coil 650 can be changed by the power applied to the coil 650, the aerosol-generating device 1 can control the heating of the aerosol-generating article by adjusting the power applied to the coil 650. For example, the aerosol-generating device 1 can control the amplitude and frequency of the alternating current applied to the coil 650.

[0144] As an example, the coil 650 can be implemented by a solenoid. The coil 650 can be a solenoid wound along the extending direction of the support unit 600 (e.g., the z-axis direction), and the susceptor 700 and the aerosol-generating article can be located in the inner space of the solenoid. The material of the wire constituting the solenoid can be copper (Cu). However, it is not limited thereto, and any one of silver (Ag), gold (Au), aluminum (Al), tungsten (W), zinc (Zn), and nickel (Ni) or an alloy including at least one of them can be the material of the wire constituting the solenoid.

[0145] The susceptor 700 is arranged inside the main body 100 and can be arranged in such a way as to surround the aerosol-generating article accommodated in the accommodation space. In one embodiment, the accommodation space can be defined as the inner space of the susceptor 700. The susceptor 700 is applied with a magnetic field by the coil 650 and generates heat, thereby heating the aerosol-generating article. The susceptor 700 can include stainless steel (SUS) material, but its material is not limited thereto.

[0146] The accommodation sensing unit 750 is disposed inside the main body 100 and can sense whether an aerosol generating article is accommodated in the accommodation space. The information sensed by the accommodation sensing unit 750 can be transmitted to the control unit or the memory of the aerosol generating device. When the accommodation sensing unit 750 senses that an aerosol generating article is accommodated, the control unit can generate a signal for an element (e.g., the coil 650) that causes the aerosol generating device to operate.

[0147] As an example, the aerosol generating article may include a metal substance such as aluminum, and the accommodation sensing unit 750 may include an inductance sensor for sensing a change in inductance generated when the aerosol generating article is accommodated in the accommodation space.

[0148] As another example, the accommodation sensing unit 750 may include a capacitance sensor or a magnetic proximity sensor that can sense a change in electromagnetic characteristics generated by an aerosol generating article adjacent to the accommodation space. However, it is not limited thereto, and the accommodation sensing unit 750 may also include other types of sensors such as an optical sensor, a temperature sensor, and a resistance sensor.

[0149] The accommodation sensing unit 750 may be configured to surround the support unit 600 and the coil 650, and may be configured to surround the accommodation space of the main body 100. Therefore, when an aerosol generating article can be accommodated in the accommodation space of the main body 100, the accommodation sensing unit 750 may be configured to surround the aerosol generating article.

[0150] The temperature sensing unit 800 is disposed inside the main body 100 and can sense the temperature inside the accommodation space of the main body 100. In one embodiment, the temperature sensing unit 800 can sense the temperature of at least any one of the coil 650 or the receptor 700. The information sensed by the temperature sensing unit 800 can be transmitted to the control unit or the memory of the aerosol generating device 1.

[0151] The temperature sensing unit 800 may extend in one direction (e.g., the z-axis direction) while being disposed on one side of the coil 650. The temperature sensing unit 800 may be a thermocouple wire, but may be used without limitation as long as it can sense the internal temperature of the accommodation space.

[0152] The shielding unit 850 is disposed inside the main body 100 and can be configured to surround the support unit 600 and the coil 650. The shielding unit 850 can perform the function of shielding the magnetic field so that the magnetic field generated inside the main body 100 does not propagate to the outside. The shielding unit 850 can include materials such as aluminum (Al), silver (Ag), etc., and can be formed in the shape of a cylinder with an empty interior as a whole, but the material and shape are not limited thereto.

[0153] Figure 5 It is to show the state in which the aerosol generating article is inserted into the heater assembly, with Figure 2 as the reference, a cross-sectional view of the heater assembly for an aerosol generating device cut along the I-I' section line according to an embodiment. Figure 5 It shows the heater assembly into which the aerosol generating article is inserted Figure 2 .

[0154] Referring to Figure 5 , the heater assembly 10 according to an embodiment may include a main body 100, a holder 150, a sealing part 180, a first cover 200, a second cover 300, an air flow channel cover 350, an article sensing sensor 500, a moisture sensing sensor 550, a support unit 600, a coil 650, a receptor 700, a housing sensing unit 750, and a shielding unit 850.

[0155] At least one of the components of the heater assembly 10 according to an embodiment may be the same as or similar to at least one of the components of the heater assembly 10 for an aerosol generating device shown in Figure 4 , and repeated descriptions will be omitted hereinafter.

[0156] Among the components of the heater assembly 10 (for example, the moisture sensing sensor 550, the support unit 600, the coil 650, the receptor 700, the housing sensing unit 750, the temperature sensing unit 800, and the shielding unit 850), the main body 100 can be disposed on the outermost side. That is, inside the main body 100, a moisture sensing sensor 550, a support unit 600, a coil 650, a receptor 700, a housing sensing unit 750, a temperature sensing unit 800, and a shielding unit 850 can be disposed. The main body 100 can include materials such as stainless steel (SUS), aluminum (Aluminum), etc.

[0157] The upper part of the main body 100 (for example, the part facing the +z direction) is combined with the first cover 200, and the lower part of the main body 100 (for example, the part facing the -z direction) is combined with the second cover 300, so that an accommodation space 10a for accommodating the aerosol generating article 2 can be formed inside the main body 100.

[0158] The accommodation space 10a may be configured with the aerosol generating article 2 and the sensor 700. In one embodiment, as Figure 5 shown, when the heater assembly 10 includes the sensor 700, the aerosol generating article 2 is accommodated inside the sensor 700, and thus can be heated by the sensor 700. In other embodiments, when the sensor is configured inside the aerosol generating article 2 in the form of fragments, flakes or strips, etc., the coil 650 may also be located at a position corresponding to the sensor and apply a magnetic field to the sensor, thereby causing the sensor to generate heat.

[0159] When the sensor is configured inside the aerosol generating article 2, the heater assembly 10 for the aerosol generating device according to one embodiment does not include the sensor 700 surrounding the aerosol generating article 2. Therefore, the space for configuring the sensor 700 can be omitted, and the omitted space can be used to configure other components. Therefore, the space utilization rate of the heater assembly 10 for the aerosol generating device according to one embodiment can be improved.

[0160] Although not shown, a material for reflecting the heat generated by the coil 650 and / or the sensor 700 to the accommodation space 10a may be vapor-deposited on at least a part of the inner surface of at least one of the main body 100, the first lid 200 and the second lid 300. Therefore, the possibility of directly releasing the heat generated by the coil 650 and / or the sensor 700 to the outside of the heater assembly 10 is reduced, and thus the heat insulation performance of the heater assembly 10 is improved. For example, the material vapor-deposited on the inner surface of at least one of the main body 100, the first lid 200 and the second lid 300 may include a metal material such as silver (Ag).

[0161] The first lid 200 may include a lid body 210 and a lid part heat insulation member 220.

[0162] The lid body 210 may function as the body of the first lid 200. A retainer 150 may be configured on one side (e.g., the +z direction) of the lid body 210, and the main body 100 may be configured on the other side (e.g., the -z direction) of the lid body 210.

[0163] The lid part heat insulation member 220 may extend from the lid body 210 in one direction (e.g., the -z direction), and may be configured outside the coil 650. Therefore, the lid part heat insulation member 220 may function as a physical barrier for preventing the heat generated in the accommodation space 10a from being released to the outside of the heater assembly 10. Therefore, the heater assembly 10 for the aerosol generating device according to one embodiment can improve the heat insulation performance by using the double physical barriers based on the main body 100 and the lid part heat insulation member 220.

[0164] The cover heat insulation member 220 may be disposed between the main body 100 and the coil 650. Specifically, the cover heat insulation member 220 may be disposed between the accommodation sensing unit 750 and the coil 650 inside the shielding unit 850. In one embodiment, the cover heat insulation member 220 may also be integrally formed with the cover body 210.

[0165] The air flow channel cover 350 may be disposed on one side of the main body 100 (e.g., the -x direction). An air flow channel 360 is formed on the air flow channel cover 350. Air flows into the interior of the heater assembly 10 through the air flow channel 360 and can move towards the accommodation space 10a that houses the aerosol generating article 2. That is, the air flow channel 360 may communicate with the accommodation space 10a, and at least a part of the air moving through the air flow channel 360 may pass through the aerosol generating article 2 accommodated in the accommodation space 10a and be discharged to the outside.

[0166] An air inlet 350a may be formed on the air flow channel cover 350. Air may flow into the air flow channel 360 inside the air flow channel cover 350 through the air inlet 350a. The air inlets 350a may be respectively formed at one end of the air flow channel cover 350 and the first air flow covering and sealing member 380. The air inlet 350a may communicate with the air inlet of the aerosol generating device body.

[0167] In one embodiment, the heater assembly 10 according to one embodiment has such a structure that air will flow in and move towards the accommodation space 10a only by means of the air flow channel 360 formed in the air flow channel cover 350. Therefore, since the flow of air flowing in from the outside can only be realized by means of the air flow channel 360 formed in the air flow channel cover 350, the pressure sensor 400 can measure the pressure of the air flow channel 360 more precisely and accurately.

[0168] In one embodiment, the air inlet 350a may be disposed at a distance from the holder 150 (the part where the aerosol generating article 2 is inserted). Thus, since the air inlet 350a can be disposed at a predetermined distance from the aerosol generating article 2 that the user contacts with the mouth for inhalation, the pressure change value (Δ value) inside the aerosol generating device during inhalation may increase.

[0169] The pressure change value (Δ value) is used as a criterion for judging the fluidity of air / air flow in the aerosol generating device. The larger the pressure change value (Δ value), the greater the fluidity of air. This is because the greater the difference between the pressure inside the aerosol generating device and the external pressure (almost the same as the atmospheric pressure), the easier it is for air to flow into the interior of the aerosol generating device. A large pressure change value (Δ value) may mean that it is significantly lower than the initial pressure inside the aerosol generating device.

[0170] In a comparative example where the air inlet 350a is disposed in the holder 150, the portion where the user inhales air and the portion where air flows in are disposed close to each other. Therefore, in the comparative example, air flows in from the portion where the user inhales, resulting in a structure where the pressure change value (Δ value) is easily affected by the user's inhalation. For example, when there is a situation where the pressure change value (Δ value) inside the aerosol generating device does not increase according to the user's usage characteristics (e.g., when the inhalation intensity is weak), it is difficult for external air to flow into the inside of the aerosol generating device. Therefore, the comparative example has a problem of poor mobility of air inside the aerosol generating device.

[0171] In the heater assembly 10 according to an embodiment, the air flow channel 360 is not formed in the holder 150 or the main body 100, but is formed on a separate air flow channel cover 350 disposed on one side surface of the main body 100. That is, the air inlet 350a, which is a part of the air flow channel 360, can be disposed at a predetermined distance from the aerosol generating article 2 that comes into contact with the user's mouth and is inhaled. Therefore, the heater assembly 10 according to an embodiment includes a structure in which the pressure change value (Δ value) is less affected by the user's inhalation, so that the pressure change value (Δ value) can increase regardless of the inhalation characteristics. Therefore, the mobility of air inside the aerosol generating device can be increased.

[0172] An air outlet 350b may be formed on the air flow channel cover 350. The air outlet 350b may be formed at a position on the air flow channel cover 350 that is separated from the air inlet 350a. Air can move through the air outlet 350b into the accommodation space 10a inside the heater assembly 10 within the air flow channel cover 350. This is because a hole communicating with the air outlet 350b is formed in the support unit 600. The air outlet 350b may be formed at the other end of the air flow channel cover 350 and the second air covering sealing member 390 that communicate with the hole of the support unit 600, respectively.

[0173] The air flowing in from the air inlet of the aerosol generating device body can pass through the air inlet 350a formed in the air flow channel cover 350, the air flow channel 360, the air outlet 350b, and the internal space of the support unit 600 and move into the accommodation space 10a.

[0174] The article sensing sensor 500 may be disposed on the air flow channel cover 350 in such a way as to be located on one side (e.g., the -x direction) of the aerosol generating article. The article sensing sensor 500 may be disposed on the air flow channel cover 350 in such a way as to be located at a position corresponding to the identification mark to sense an identification mark (not shown) disposed on the outer surface of the aerosol generating article 2.

[0175] The moisture sensing sensor 550 can be configured to be located on one side of the aerosol generating article 2 (e.g., the +x direction). The moisture sensing sensor 550 can be arranged corresponding to a section of the aerosol generating article 2 containing the aerosol generating substance. For this purpose, the sensor bracket 550a can be coupled to the support unit 600 so as to be located at a position corresponding to the section of the aerosol generating article 2. Moisture generated when the aerosol generating substance contained in the aerosol generating article 2 generates aerosol may be concentrated and wetted or adhered to the section, but the moisture sensing sensor 550 is arranged corresponding to the section, so that the moisture of the aerosol generating article 2 can be accurately and precisely measured. For example, the moisture sensing sensor 550 can be configured in a direction spaced downward (e.g., the -z direction) from the middle part of the support unit 600.

[0176] The support unit 600 is configured to surround the accommodation space 10a and can support the coil 650 for heating the receptor 700. The support unit 600 can be arranged inside the cover heat insulating member 220 and can be supported by the first cover 200.

[0177] The coil 650 is arranged on the support unit 600 and can heat the receptor arranged in the accommodation space 10a. The coil 650 can be wound around the outer surface of the support unit 600. When the coil 650 is cut with reference to a plane (e.g., the xz plane) that extends in a first direction (e.g., the z-axis direction) passing through the support unit 600 and a second direction (e.g., the x-axis direction) crossing the support unit 600, it can be formed in a shape having a circular cross section. That is, when observing the coil 650 in the y-axis direction, the coil 650 can be formed in a shape having a circular cross section.

[0178] The receptor 700 can be configured to surround the accommodation space 10a and can heat the aerosol generating article 2 arranged in the accommodation space 10a. The receptor 700 can be arranged inside the support unit 600 and can be supported by the support unit 600. The receptor 700 can be formed in an internally empty cylindrical shape, but its shape is not limited thereto.

[0179] The accommodation sensing unit 750 can be configured to surround the accommodation space 10a. The accommodation sensing unit 750 can be arranged between the cover heat insulating member 220 and the shielding unit 850 outside the coil 650.

[0180] The shielding unit 850 is configured to surround the accommodation space 10a in the internal space of the main body 100 and can be arranged between the main body 100 and the accommodation sensing unit 750. That is, since the shielding unit 850 is arranged outside the coil 650, it can perform the function of shielding the magnetic field generated by the coil 650.

[0181] Figure 6 This is to show the state in which the aerosol - generating article is inserted into the heater assembly, for Figure 2 The cross - sectional view of the heater assembly for an aerosol - generating device cut along the II - II' section line as shown in

[0182] Referring to Figure 6 According to one embodiment, the heater assembly 10 may include a body 100, a holder 150, a sealing part 180, a first cover 200, a second cover 300, an air - flow channel cover 350, a pressure sensor 400, an article - sensing sensor 500, a moisture - sensing sensor 550, a support unit 600, a coil 650, a receptor 700, a housing - sensing unit 750, and a shielding unit 850.

[0183] At least one of the components of the heater assembly 10 according to one embodiment may be the same as or similar to at least one of the components of the heater assembly 10 for an aerosol - generating device shown in Figure 5 The repeated description will be omitted hereinafter.

[0184] The pressure sensor 400 is disposed on the air - flow channel cover 350 and can sense the pressure change in the air - flow channel. Figure 6 An embodiment is shown in which the pressure sensor 400 is disposed at a position spaced upward (e.g., in the +z direction) from the middle part of the air - flow channel cover 350, but this is merely exemplary, and the arrangement position can be set differently as long as the internal pressure change of the air - flow channel can be sensed.

[0185] Figure 7 This is an exploded perspective view of the holder, the first cover, the temperature - sensing unit, and the shielding unit included in the heater assembly for an aerosol - generating device according to one embodiment. Hereinafter, with reference to the drawings, the coupling relationship of the holder, the first cover, the temperature - sensing unit, and the shielding unit will be described.

[0186] Referring to Figure 7 According to one embodiment, the heater assembly 10 may include a holder 150, a first cover 200, a temperature - sensing unit 800, and a shielding unit 850.

[0187] At least one of the components of the heater assembly 10 according to one embodiment may be the same as or similar to at least one of the components of the heater assembly 10 for an aerosol - generating device shown in Figure 4 and Figure 5 The repeated description will be omitted hereinafter.

[0188] The retainer 150 is located on one side (e.g., the +z direction) of the first lid 200 and can be coupled to the first lid 200. The retainer 150 can be coupled to the first lid 200 using a coupling member such as a screw, but the coupling method is not limited thereto.

[0189] The retainer 150 may include a ridge 150b for supporting the aerosol generating article 2 inserted into the insertion hole 150a. The ridge 150b may protrude into the insertion hole 150a and may contact the aerosol generating article 2 inserted into the insertion hole 150a. In one embodiment, a plurality of ridges 150b may be provided at intervals along the circumferential direction of the insertion hole 150a.

[0190] The first lid 200 may include a lid body 210, a lid portion heat insulating member 220, and an avoidance groove 230.

[0191] An article insertion portion 200a is formed on the lid body 210 such that the aerosol generating article inserted through the insertion hole 150a can pass through the lid body 210 and be received in the accommodation space 10a. Although not shown, a hole for inserting a coupling member such as a screw may be formed in the lid body 210, and as the screw passes through the hole and is coupled, the lid body 210 can be fixedly coupled to the aerosol generating device body.

[0192] The lid portion heat insulating member 220 may extend from the lid body 210 in one direction (e.g., the -z direction) and may be configured to surround the coil 650 and the sensor 700.

[0193] The avoidance groove 230 may be formed in the lid portion heat insulating member 220. The avoidance groove 230 may extend together in the direction in which the lid portion heat insulating member 220 extends (e.g., the z-axis direction). A plurality of avoidance grooves 230 may be formed in the lid portion heat insulating member 220 at intervals from each other.

[0194] At least a part of the temperature sensing unit 800 may be inserted into the avoidance groove 230. Therefore, when the heater assembly 10 according to one embodiment is assembled, the lid portion heat insulating member 220 and the temperature sensing unit 800 can be disposed inside the main body without interfering with each other. Therefore, there is no need to reserve an additional space inside the heater assembly 10 to dispose the temperature sensing unit 800 and the lid portion heat insulating member 220 separately, thereby enabling miniaturization of the heater assembly 10.

[0195] When the lid portion heat insulating member 220 includes a plurality of avoidance grooves 230, the temperature sensing unit 800 may be inserted into any one of the avoidance grooves 230, and the wire of the coil 650 may be inserted into any one of the remaining avoidance grooves 230. Therefore, miniaturization of the heater assembly 10 can be further achieved.

[0196] The shielding unit 850 may be configured to surround the cover portion heat insulation member 220 and may be disposed inside the temperature sensing unit 800. In this case, a temperature sensing unit insertion groove 850a into which at least a part of the temperature sensing unit 800 is inserted and disposed may be formed in the shielding unit 850. Accordingly, when the assembly of the heater assembly 10 according to an embodiment is completed, the temperature sensing unit 800 and the shielding unit 850 may be disposed inside the main body without interfering with each other.

[0197] Figure 8 FIG. 4 is an exploded perspective view of a first cover, an air flow channel cover, and a mounting member included in a heater assembly for an aerosol generating device according to an embodiment. Hereinafter, with reference to the drawings, the coupling relationship between the first cover, the air flow channel cover, and the mounting member will be described.

[0198] Referring to Figure 8 FIG. 9, the heater assembly 10 according to an embodiment may include a first cover 200, an air flow channel cover 350, a pressure sensor 400, a mounting member 450, and an article sensing sensor 500.

[0199] At least one of the components of the heater assembly 10 according to an embodiment may be the same as or similar to at least one of the components of the heater assembly 10 for an aerosol generating device shown in Figures 4 to 7 FIG. 14, and repeated descriptions will be omitted hereinafter.

[0200] The air flow channel cover 350 may include an air flow channel cover body 351 and a cover portion engaging member 352.

[0201] The air flow channel cover body 351 may function as the body of the air flow channel cover 350. An air flow channel may be formed inside the air flow channel cover body 351, and an air flow inlet 350a and an air flow outlet 350b may be formed at positions spaced apart from each other. The air flow channel, the air flow inlet 350a, and the air flow outlet 350b may communicate with each other.

[0202] The cover portion engaging member 352 may be formed on the air flow channel cover body 351. The cover portion engaging member 352 may protrude from the air flow channel cover body 351 toward the first cover 200. The cover portion engaging member 352 may be inserted into an air flow channel cover coupling groove 240 formed in the cover body 210, and when the cover portion engaging member 352 is inserted into the air flow channel cover coupling groove 240, the air flow channel cover 350 may be fixedly coupled to the first cover 200. Accordingly, in the heater assembly 10 according to an embodiment, the first cover 200 and the air flow channel cover 350 may be coupled to each other using a simple hook coupling structure. The air flow channel cover coupling groove 240 may be formed on the upper surface (e.g., the surface facing the +z direction) of the cover body 210.

[0203] The air flow channel cover 350 may further include a receiving portion 370.

[0204] The receiving portion 370 is formed on the air flow channel cover body 351 and can perform the function of arranging the mounting member 450 and the sensors 400 and 500 on the air flow channel cover 350.

[0205] The receiving portion 370 may include a pressure sensor receiving portion 371, an article sensing sensor receiving portion 372, and a mounting member receiving portion 373. The receiving portions 371, 372, and 373 may communicate with each other and may be provided on different parts of the air flow channel cover 350.

[0206] In one embodiment, the pressure sensor receiving portion 371 may be provided on the first side surface of the air flow channel cover 350 (for example, the portion facing the +y direction), the article sensing sensor receiving portion 372 may be provided on the second side surface of the air flow channel cover 350 (for example, the portion facing the +x direction), and the mounting member receiving portion 373 may be provided on the first side surface (for example, the portion facing the +y direction) and the second side surface (for example, the portion facing the +x direction) of the air flow channel cover 350 respectively.

[0207] The pressure sensor 400 may be received in the pressure sensor receiving portion 371. The pressure sensor 400 may sense the internal pressure of the air flow channel in a state of being received in the pressure sensor receiving portion 371. A through hole 350c communicating with the pressure sensor receiving portion 371 may be formed in the air flow channel cover body 351, and the pressure sensor 400 may easily sense the pressure change inside the air flow channel by being inserted into the through hole 350c. This is because the through hole 350c communicates with the air flow channel.

[0208] The article sensing sensor 500 may be received in the article sensing sensor receiving portion 372. The article sensing sensor 500 may sense the identification mark of the aerosol generating article in a state of being received in the article sensing sensor receiving portion 372.

[0209] The mounting member 450 is combined with the air flow channel cover 350 as it is received in the receiving portion 370. The pressure sensor 400 and the article sensing sensor 500 may be mounted together through a single mounting member 450. Therefore, the pressure sensor 400 and the article sensing sensor 500 may be arranged on the air flow channel cover 350 simultaneously through a compact mounting structure.

[0210] The mounting member 450 may include a first mounting member 451, a second mounting member 452, and a third mounting member 453.

[0211] The first mounting member 451 serves as the body of the mounting member 450 and can be connected to the second mounting member 452, the third mounting member 453, and the connection portion 450a respectively. The first mounting member 450 can extend along the direction in which the air flow passage cover 350 extends (e.g., the z-axis direction) and can be accommodated in the mounting member accommodation portion 373.

[0212] The second mounting member 452 can extend from the first mounting member 451 in one direction (e.g., the +z direction). A pressure sensor 400 can be disposed on the second mounting member 452. The pressure sensor 400 can be accommodated in the pressure sensor accommodation portion 371 in a state of being mounted on the second mounting member 452. The second mounting member 452 can be accommodated in the mounting member accommodation portion 373 and the pressure sensor accommodation portion 371 together.

[0213] The third mounting member 453 can include: a first portion extending from the first mounting member 451 in one direction (e.g., the +x direction); a second portion extending from the first portion in one direction (e.g., the -y direction); and a third portion extending from the second portion in one direction (e.g., the +z direction). An article sensing sensor 500 can be disposed on the third mounting member 453. Specifically, the article sensing sensor 500 can be disposed on the third portion of the third mounting member 453. The article sensing sensor 500 can be accommodated in the article sensing sensor accommodation portion 372 in a state of being mounted on the third mounting member 453. The third mounting member 453 can be accommodated in the mounting member accommodation portion 373 and the pressure sensor accommodation portion 371 together.

[0214] The mounting member 450 can include a connection portion 450a. The connection portion 450a is connected to the end of the first mounting member 451, can pass through the sealing portion, and is connected to the memory or the control portion of the aerosol generating device body. The information sensed by the pressure sensor 400 and the article sensing sensor 500 can be transmitted to the memory or the control portion through the connection portion 450a of the mounting member 450. The connection portion 450a, the third mounting member 453, the second mounting member 452, and the first mounting member 451 can be integrally formed.

[0215] Figure 9 It is a rear perspective view of a heater assembly for an aerosol generating device according to an embodiment showing the combined relationship of the sealing portion, the second cover, the air flow passage cover, and the support unit. Hereinafter, the combined relationship of the sealing portion 180, the second cover 300, the air flow passage cover 350, and the support unit 600 will be described.

[0216] The heater assembly 10 according to an embodiment can include a sealing portion 180, a second cover 300, an air flow passage cover 350, and a support unit 600. At least one of the components of the heater assembly 10 may be related to Figures 4 to 8At least one of the components of the heater assembly 10 for an aerosol generating device shown in [reference] is the same as or similar to that of [reference], and repeated descriptions will be omitted hereinafter.

[0217] The air flow passage inside the air flow passage cover 350 communicates with the inside of the support unit 600. The air flow passage cover 350 may not be directly connected to the support unit 600 and may be coupled to the support unit 600 through the second cover 300.

[0218] In one embodiment, the air flow passage cover 350 may be coupled to the second cover 300 through a coupling member such as a screw, but the coupling method is not limited thereto. In addition, the sealing unit 180 may be coupled to the second cover 300 and the air flow passage cover 350 respectively on the lower side (e.g., -z direction) of the second cover 300 and the air flow passage cover 350.

[0219] Figure 10 It is an assembled perspective view of the support unit, heater, accommodation sensing unit, and temperature sensing unit included in the heater assembly for an aerosol generating device according to one embodiment. Hereinafter, with reference to the drawings, the coupling relationship of the support unit 600, coil 650, accommodation sensing unit 750, and temperature sensing unit 800 will be described.

[0220] Refer to Figure 10 , the heater assembly 10 according to one embodiment may include a support unit 600, a coil 650, an accommodation sensing unit 750, and a temperature sensing unit 800. At least one of the components of the heater assembly 10 may be the same as or similar to Figures 4 to 9 at least one of the components of the heater assembly 10 for an aerosol generating device shown in [reference], and repeated descriptions will be omitted hereinafter.

[0221] The coil 650 may be disposed outside the support unit 600 and may be electrically connected to at least any one of the battery, memory, or control unit of the aerosol generating device body through the connection portion 650a.

[0222] The accommodation sensing unit 750 may be disposed so as to surround the outside of the support unit 600 and the coil 650 and may extend in the direction in which the support unit 600 and the coil 650 extend (e.g., z-axis direction). The accommodation sensing unit 750 may be electrically connected to at least any one of the battery, memory, or control unit of the aerosol generating device body through the connection portion 750a.

[0223] The accommodation sensing unit 750 may be disposed inside the main body in such a manner as to surround a part of the outer sides of the support unit 600 and the coil 650. Therefore, in the heater assembly 10 according to an embodiment, the accommodation sensing unit 750 can be inserted into the main body 100 more easily as compared with a comparative example in which the accommodation sensing unit 750 surrounds the entire outer sides of the support unit 600 and the coil 650. Accordingly, the assembling convenience for the heater assembly 10 can be improved.

[0224] The temperature sensing unit 800 is disposed on one side surface (e.g., +x direction) of the inner support unit 600 of the main body and can sense the temperature of at least any one of the coil 650 or the receptor. In one embodiment, the temperature sensing unit 800 contacts the support unit 600 or the receptor and can sense the temperature of the coil 650 or the receptor.

[0225] The temperature sensing unit 800 may include a sensing body 810 and a sensing connection part 820.

[0226] The sensing body 810 serves as the body of the temperature sensing unit 800 and may extend in the direction in which the heater assembly 10 extends (e.g., z-axis direction). The sensing body 810 may be disposed between the main body and the shielding unit. The sensing body 810 may also be integrally formed with the sensing connection part 820.

[0227] The sensing connection part 820 may be connected to the support unit 600 or the receptor. The sensing connection part 820 may have a bent letter shape. The sensing connection part 820 may include: a first part extending in a direction (e.g., -x direction) crossing the extending direction of the sensing body 810; and a second part extending in a direction (e.g., -z direction) crossing the extending direction of the first part. At least a part of the first part may be supported by the support unit 600, and at least a part of the second part may be connected to the support unit 600 or the receptor. In this case, a groove 600a into which the first part of the sensing connection part 820 is inserted may be formed in the support unit 600.

[0228] The temperature sensing unit 800 may be electrically connected to at least any one of the battery, the memory, or the control unit of the aerosol generating device body through a connection part 800a. The connection part 800a may extend from the sensing body 810 in one direction (e.g., -z direction).

[0229] Figure 11 and Figure 12 are diagrams showing examples of an aerosol generating article according to an embodiment.

[0230] Hereinafter, with reference to Figure 11 and Figure 12 , examples of the aerosol generating article 2 will be described.

[0231] Figure 11 and Figure 12 is a diagram showing an example of an aerosol - generating article according to an embodiment.

[0232] Referring to Figure 11 , the aerosol - generating article 2 includes a tobacco rod 21 and a filter rod 22.

[0233] Figure 11 shows that the filter rod 22 is a single - segment structure, but is not limited thereto. In other words, the filter rod 22 may be composed of multiple segments. For example, the filter rod 22 may include a segment for cooling the aerosol and a segment for filtering a specified component included in the aerosol. Additionally, according to requirements, the filter rod 22 may further include at least one segment that performs other functions.

[0234] The diameter of the aerosol - generating article 2 is in the range of 5 mm to 9 mm, and the length may be about 48 mm, but is not limited thereto. For example, the length of the tobacco rod 21 may be about 12 mm, the length of the first segment of the filter rod 22 may be about 10 mm, the length of the second segment of the filter rod 22 may be about 14 mm, and the length of the third segment of the filter rod 22 may be about 12 mm, but is not limited thereto.

[0235] The aerosol - generating article 2 may be wrapped with at least one wrapper 24. At least one hole for external air to flow in or internal gas to flow out may be formed on the wrapper 24. As an example, the aerosol - generating article 2 may be wrapped with one wrapper 24. As other examples, the aerosol - generating article 2 may also be wrapped with two or more wrappers 24 overlapping. For example, the tobacco rod 21 may be wrapped with the first wrapper 24a, and the filter rod 22 may be wrapped with wrappers 24b, 24c, 24d. And the entire aerosol - generating article 2 may be wrapped again with a single wrapper 24e. If the filter rod 22 is composed of multiple segments, each segment may be wrapped with wrappers 24b, 24c, 24d.

[0236] The first wrapper 24a and the second wrapper 24b can generally be made of filter roll paper. For example, the first wrapper 24a and the second wrapper 24b may be porous roll paper or non - porous roll paper. Additionally, the first wrapper 24a and the second wrapper 24b may be made of oil - resistant paper and / or aluminum composite packaging materials.

[0237] The third wrapper 24c may be made of hard roll paper. For example, the basis weight of the third wrapper 24c may be included in the range of 88 g / m 2 ~96 g / m 2 and preferably included in the range of 90 g / m 2 ~94 g / m 2within a range. Additionally, the thickness of the third wrapping paper 24c can be included within the range of 120um to 130um, and preferably can be 125um.

[0238] The fourth wrapping paper 24d can be made of oil-resistant hard roll paper. For example, the basis weight of the fourth wrapping paper 24d can be included within the range of 88g / m 2 to 96g / m 2 and preferably is included within the range of 90g / m 2 to 94g / m 2 and preferably can be 125um.

[0239] The fifth wrapping paper 24e can be made of sterilized paper (MFW). Among them, the sterilized paper (MFW) refers to specially manufactured paper, and its properties such as tensile strength, water resistance, and smoothness are superior to ordinary paper. For example, the basis weight of the fifth wrapping paper 24e can be included within the range of 57g / m 2 to 63g / m 2 and preferably can be 60g / m 2 . Additionally, the thickness of the fifth wrapping paper 24e can be included within the range of 64um to 70um, and preferably can be 67um.

[0240] The fifth wrapping paper 24e can be internally added with a predetermined substance. Among them, silicone plastics can be used as an example of the predetermined substance, but are not limited thereto. For example, silicone plastics have properties such as heat resistance with less change due to temperature, oxidation resistance that is not oxidized, resistance to various drugs, water repellency for water, or electrical insulation. However, even if it is not silicone plastics, as long as it is a substance with the above properties, it can be coated (or laminated) on the fifth wrapping paper 24e without limitation.

[0241] The fifth wrapping paper 24e can prevent the aerosol-generating article 2 from burning. For example, when the tobacco rod 21 is heated by a heater, the aerosol-generating article 2 has the possibility of burning. Specifically, when the temperature rises above the ignition point of any one of the substances included in the tobacco rod 21, the aerosol-generating article 2 may burn. Even in this case, since the fifth wrapping paper 24e includes non-combustible substances, the burning phenomenon of the aerosol-generating article 2 can be prevented.

[0242] In addition, the fifth wrapper 24e can prevent the aerosol generating device 1 from being contaminated by the substances generated by the aerosol generating article 2. Through the suction of the user, liquid substances may be generated inside the aerosol generating article 2. For example, the aerosol generated by the aerosol generating article 2 may be cooled by external air, and liquid substances (such as moisture, etc.) may be generated. By wrapping the aerosol generating article 2 with the fifth wrapper 24e, it is possible to prevent the liquid substances generated inside the aerosol generating article 2 from leaking to the outside of the aerosol generating article 2.

[0243] The tobacco rod 21 contains an aerosol generating substance. For example, the aerosol generating substance may include at least one of glycerol, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol, but is not limited thereto. In addition, the tobacco rod 21 may contain other additive substances such as flavoring agents, humectants, and / or organic acids. In addition, flavoring liquids such as menthol or humectants may be added to the tobacco rod 21 in a manner of spraying onto the tobacco rod 21.

[0244] The tobacco rod 21 can be made in various ways. For example, the tobacco rod 21 can be made of sheet or strand materials. In addition, the tobacco rod 21 can be made of tobacco leaves obtained by cutting tobacco sheets into fine pieces. In addition, the tobacco rod 21 can be surrounded by a heat-conducting substance. For example, the heat-conducting substance can be a metal foil such as aluminum foil, but is not limited thereto. As an example, the heat-conducting substance surrounding the tobacco rod 21 can evenly disperse and transfer the heat to the tobacco rod 21, thereby increasing the heat conduction rate applied to the tobacco rod, and thus improving the taste of the tobacco. In addition, the heat-conducting substance surrounding the tobacco rod 21 can act as a receptor heated by an inductive heating type heater. At this time, although not shown, the tobacco rod 21 may include an additional receptor in addition to the heat-conducting substance surrounding the outside.

[0245] The filter rod 22 can be a cellulose acetate filter. In addition, the shape of the filter rod 22 is not limited. For example, the filter rod 22 can be a cylindrical rod, or can also be a tubular rod with a cavity inside. In addition, the filter rod 22 can be an embedded rod. If the filter rod 22 is composed of multiple segments, at least one of the multiple segments can be made into a different shape.

[0246] The first segment of the filter rod 22 can be a cellulose acetate filter. For example, the first segment can be a structure in the form of a tube with a cavity inside. When the heater is inserted through the first segment, it is possible to prevent the substances inside the tobacco rod 21 from being pushed backward, and it is also possible to produce a cooling effect on the aerosol. The diameter of the cavity in the first segment can adopt an appropriate diameter within the range of 2 mm to 4.5 mm, but is not limited thereto.

[0247] The length of the first section can be appropriately selected within the range of 4 mm to 30 mm, but is not limited thereto. Preferably, the length of the first section can be 10 mm, but is not limited thereto.

[0248] When manufacturing the first section, the hardness of the first section can be adjusted by adjusting the content of the plasticizer. It can be made by inserting members such as films and tubes made of the same or different materials inside (e.g., in the cavity).

[0249] The second section of the filter rod 22 cools the aerosol generated by heating the tobacco rod 21 with the heater. Therefore, the user can inhale the aerosol cooled to an appropriate temperature.

[0250] The length or diameter of the second section can be determined differently according to the form of the aerosol generating article 2. For example, the length of the second section can be appropriately selected within the range of 7 mm to 20 mm. Preferably, the length of the second section can be about 14 mm, but is not limited thereto.

[0251] The second section can be made by weaving polymer fibers. In this case, a flavoring liquid can also be coated on the polymer-made fibers. Additionally, extra fibers coated with the flavoring liquid can be woven together with the polymer-made fibers to make the second section. Additionally, the second section can be formed by winding a polymer sheet.

[0252] For example, the polymer can be made of materials selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), cellulose acetate (CA), and aluminum foil.

[0253] As the second section is formed by woven polymer fibers or a wound polymer sheet, the second section can include one or more channels extending longitudinally. Herein, the channel refers to a passage for gas (e.g., air or aerosol) to pass through.

[0254] For example, the second section made of a wound polymer sheet can be made of a material having a thickness between about 5 μm and about 300 μm (e.g., between about 10 μm and about 250 μm). Additionally, the total surface area of the second section can be between about 300 mm 2 / mm and about 1000 mm 2 / mm. Additionally, the aerosol cooling element can be made of a material having a specific surface area between about 10 mm 2 / mg and about 100 mm 2 / mg.

[0255] In addition, the second section may include a thread containing a volatile flavor component. The volatile flavor component may be menthol, but is not limited thereto. For example, the thread may be filled with a sufficient amount of menthol to provide more than 1.5 mg of menthol to the second section.

[0256] The third section of the filter rod 22 may be a cellulose acetate filter. The length of the third section may be appropriately selected within the range of 4 mm to 20 mm. For example, the length of the third section may be about 12 mm, but is not limited thereto.

[0257] During the production of the third section, it may also be produced in such a way that a flavoring liquid is sprayed onto the third section to generate a fragrance. In addition, additional fibers coated with the flavoring liquid may be inserted into the interior of the third section. The aerosol generated by the tobacco rod 21 is cooled when passing through the second section of the filter rod 22, and the cooled aerosol is transmitted to the user through the third section. Therefore, when a flavoring element is added to the third section, an effect of increasing the persistence of the fragrance transmitted to the user can be produced.

[0258] In addition, the filter rod 22 may include at least one capsule 23. The capsule 23 may perform the function of generating a fragrance and may also perform the function of generating an aerosol. For example, the capsule 23 may be a structure in which a liquid containing a fragrance is wrapped with a film. The capsule 23 may have a spherical or cylindrical shape, but is not limited thereto.

[0259] Refer to Figure 12 , the aerosol generating article 3 may further include a front-end plug 33. In the tobacco rod 31, the front-end plug 33 may be located on the side opposite to the filter rod 32. The front-end plug 33 can prevent the tobacco rod 31 from detaching to the outside and can prevent the liquefied aerosol from flowing from the tobacco rod 31 into the aerosol generating device 1 during smoking.

[0260] The filter rod 32 may include a first section 321 and a second section 322. The first section 321 may correspond to Figure 11 the first section of the filter rod 22, and the second section 322 may correspond to Figure 11 the third section of the filter rod 22.

[0261] The diameter and overall length of the aerosol generating article 3 may correspond to Figure 11 those of the aerosol generating article 2. For example, the length of the front-end plug 33 may be about 7 mm, the length of the tobacco rod 31 may be about 15 mm, the length of the first section 321 may be about 12 mm, and the length of the second section 322 may be about 14 mm, but is not limited thereto.

[0262] The aerosol generating article 3 can be wrapped with at least one wrapper 35. At least one hole for the inflow of external air or the outflow of internal gas can be formed in the wrapper 35. For example, the front-end plug 33 can be wrapped with the first wrapper 35a, the tobacco rod 31 can be wrapped with the second wrapper 35b, the first section 321 can be wrapped with the third wrapper 35c, and the second section 322 can be wrapped with the fourth wrapper 35d. Also, the entire aerosol generating article 3 can be wrapped again with the fifth wrapper 35e.

[0263] In addition, at least one perforation 36 can be formed in the fifth wrapper 35e. For example, the perforation 36 can be formed in the area surrounding the tobacco rod 31, but is not limited thereto. The perforation 36 can function to transfer the heat formed by the heater to the inside of the tobacco rod 31.

[0264] In addition, the second section 322 can include at least one capsule 34. Among them, the capsule 34 can function to generate fragrance and can also function to generate aerosol. For example, the capsule 34 can be a structure in which a liquid containing a fragrance is wrapped with a film. The capsule 34 can have a spherical or cylindrical shape, but is not limited thereto.

[0265] The first wrapper 35a can be made by bonding a metal foil such as aluminum foil to a common filter roll paper. For example, the overall thickness of the first wrapper 35a can be in the range of 45um to 55um, and preferably can be 50.3um. In addition, the thickness of the metal foil of the first wrapper 35a can be in the range of 6um to 7um, and preferably can be 6.3um. In addition, the basis weight of the first wrapper 35a can be in the range of 50g / m 2 ~55g / m 2 and preferably can be 53g / m 2 .

[0266] The second wrapper 35b and the third wrapper 35c can be made of common filter roll paper. For example, the second wrapper 35b and the third wrapper 35c can be porous roll paper or non-porous roll paper.

[0267] For example, the porosity of the second wrapper 35b can be 35000CU, but is not limited thereto. In addition, the thickness of the second wrapper 35b can be in the range of 70um to 80um, and preferably can be 78um. In addition, the basis weight of the second wrapper 35b can be in the range of 20g / m 2 ~25g / m 2 and preferably can be 23.5g / m 2 .

[0268] For example, the porosity of the third wrapping paper 35c can be 24000 CU, but it is not limited thereto. Additionally, the thickness of the third wrapping paper 35c can be within the range of 60 um to 70 um, and preferably can be 68 um. Additionally, the basis weight of the third wrapping paper 35c can be within the range of 20 g / m 2 ~25 g / m 2 and preferably can be 21 g / m 2 .

[0269] The fourth wrapping paper 35d can be made of polylactic acid (PLA) composite paper. Among them, the PLA composite paper refers to a paper with a triple structure including a paper layer, a PLA layer, and a paper layer. For example, the thickness of the fourth wrapping paper 35d can be within the range of 100 um to 120 um, and preferably can be 110 um. Additionally, the basis weight of the fourth wrapping paper 35d can be within the range of 80 g / m 2 ~100 g / m 2 and preferably can be 88 g / m 2 .

[0270] The fifth wrapping paper 35e can be made of sterilized paper (MFW). Among them, the sterilized paper (MFW) refers to a specially manufactured paper whose properties such as tensile strength, water resistance, and smoothness are superior to those of ordinary paper. For example, the basis weight of the fifth wrapping paper 35e can be within the range of 57 g / m 2 ~63 g / m 2 and preferably can be 60 g / m 2 . Additionally, the thickness of the fifth wrapping paper 35e can be within the range of 64 um to 70 um, and preferably can be 67 um.

[0271] A predetermined substance can be added to the fifth wrapping paper 35e. Among them, silicone plastics can be an example of the predetermined substance, but it is not limited thereto. For example, silicone plastics have properties such as heat resistance with less change due to temperature, oxidation resistance without being oxidized, resistance to various drugs, water repellency for water, or electrical insulation. However, even if it is not silicone plastics, as long as it is a substance with the above properties, it can be coated (or laminated) on the fifth wrapping paper 35e without limitation.

[0272] The front-end plug 33 can be made of cellulose acetate. As an example, the front-end plug 33 can be made by adding a plasticizer (e.g., triacetin) to a cellulose acetate tow. The mono denier of the filaments constituting the cellulose acetate tow can be in the range of 1.0 to 10.0, preferably in the range of 4.0 to 6.0. More preferably, the mono denier of the filaments of the front-end plug 33 can be 5.0. Additionally, the cross-section of the filaments constituting the front-end plug 33 can be Y-shaped. The total denier of the front-end plug 33 can be in the range of 20,000 to 30,000, preferably in the range of 25,000 to 30,000. More preferably, the total denier of the front-end plug 33 can be 28,000.

[0273] Additionally, as required, the front-end plug 33 can include at least one channel, and the cross-sectional shape of the channel can be made differently.

[0274] Refer to Figure 11 , the tobacco rod 31 can correspond to the above-mentioned tobacco rod 21. Therefore, the specific description of the tobacco rod 31 will be omitted hereinafter.

[0275] The first section 321 can be made of cellulose acetate. For example, the first section can be a structure in the form of a tube with a cavity inside. The first section 321 can be made by adding a plasticizer (e.g., triacetin) to a cellulose acetate tow. For example, the mono denier and total denier of the first section 321 can be the same as those of the front-end plug 33.

[0276] The second section 322 can be made of cellulose acetate. The mono denier of the filaments constituting the second section 322 can be in the range of 1.0 to 10.0, preferably in the range of 8.0 to 10.0. More preferably, the mono denier of the filaments of the second section 322 can be 9.0. Additionally, the cross-section of the filaments of the second section 322 can be Y-shaped. The total denier of the second section 322 can be in the range of 20,000 to 30,000, preferably 25,000.

[0277] Figure 13 is a block diagram of an aerosol generating device according to other embodiments.

[0278] The aerosol generating device 1 can include a control unit 1000, a sensing unit 2000, an output unit 3000, a battery 4000, a heater 5000, a user input unit 6000, a memory 7000, and a communication unit 8000. However, the internal structure of the aerosol generating device 1 is not limited to Figure 12 shown. That is, according to the design of the aerosol generating device 1, those of ordinary skill in the art can understand thatFigure 12 A part of the structure shown can be omitted, or other components can be further added.

[0279] The sensing unit 2000 can sense the state of the aerosol generating device 1 or the state around the aerosol generating device 1, and transmit the sensed information to the control unit 1000. The control unit 1000 can control the aerosol generating device 1 based on the sensed information to perform various functions, such as controlling the operation of the heater 5000, restricting smoking, judging whether an aerosol generating article (e.g., cigarette, cartridge, etc.) is inserted, and displaying an alarm.

[0280] The sensing unit 2000 can include at least one of a temperature sensor 2100, an insertion sensing sensor 2200, and a puff sensor 2300, but is not limited thereto.

[0281] The temperature sensor 2100 can sense the temperature at which the heater 5000 (or the aerosol generating substance) is heated. The aerosol generating device 1 can include an additional temperature sensor for sensing the temperature of the heater 5000, or the heater 5000 itself can perform the function of a temperature sensor. Additionally, the temperature sensor 2100 can also be arranged around the battery 4000 to monitor the temperature of the battery 4000.

[0282] The insertion sensing sensor 2200 can sense the insertion and / or removal of an aerosol generating article. For example, the insertion sensing sensor 2200 can include at least one of a thin film sensor, a pressure sensor, an optical sensor, a resistance sensor, a capacitance sensor, an inductive sensor, and an infrared sensor, and can sense a signal change according to the insertion and / or removal of the aerosol generating article.

[0283] The puff sensor 2300 can sense a user's puff based on various physical changes in the air flow passage or the air flow passage. For example, the puff sensor 2300 can sense a user's puff based on any one of a temperature change, a flow change, a voltage change, and a pressure change.

[0284] In addition to the above sensors (2100 to 2300), the sensing unit 2000 can also include at least one of a temperature / humidity sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a gyro sensor, a position sensor (e.g., GPS), a proximity sensor, and an RGB sensor (illuminance sensor). The functions of each sensor can be intuitively inferred by those skilled in the art from their names, so specific descriptions will be omitted.

[0285] The output unit 3000 can output information on the state of the aerosol generating device 1 and provide it to the user. The output unit 3000 may include at least one of a display unit 3100, a haptic unit 3200, and an audio output unit 3300, but is not limited thereto. When the display unit 3100 forms a stacked structure with a touchpad and constitutes a touch screen, the display unit 3100 can be used not only as an output device but also as an input device.

[0286] The display unit 3100 can visually provide information on the aerosol generating device 1 to the user. For example, the information on the aerosol generating device 1 may refer to various information such as the charge / discharge state of the battery 4000 of the aerosol generating device 1, the preheating state of the heater 5000, the insertion / removal state of the aerosol generating article, or the state in which the use of the aerosol generating device 1 is restricted (e.g., an abnormal article is sensed), and the display unit 3100 can output the information to the outside. The display unit 3100 may be, for example, a liquid crystal display panel (LCD), an organic light emitting display panel (OLED), or the like. In addition, the display unit 3100 may also be in the form of an LED light emitting element.

[0287] The haptic unit 3200 converts an electrical signal into a mechanical stimulus or an electrical stimulus, thereby providing information on the aerosol generating device 1 to the user in a haptic manner. For example, the haptic unit 3200 may include a motor, a piezoelectric element, or an electrical stimulation device.

[0288] The audio output unit 3300 can auditorily provide information on the aerosol generating device 1 to the user. For example, the audio output unit 3300 can convert an electrical signal into an audio signal and output it to the outside.

[0289] The battery 4000 can supply the power required for the aerosol generating device 1 to operate. The battery 4000 can supply power to heat the heater 5000. In addition, the battery 4000 can supply the power required for other structures (e.g., the sensing unit 2000, the output unit 3000, the user input unit 6000, the memory 7000, and the communication unit 8000) provided in the aerosol generating device 1 to operate. The battery 4000 can be a rechargeable battery or a disposable battery. For example, the battery 4000 can be a lithium polymer (LiPoly) battery, but is not limited thereto.

[0290] The heater 5000 can receive power from the battery 4000 to heat the aerosol generating substance. Figure 13Although not shown in the figure, the aerosol generating device 1 may further include: a power conversion circuit (e.g., a DC / DC converter) that supplies power to the heater 5000 by converting the power of the battery 4000. Additionally, when the aerosol generating device 1 generates aerosol in an induction heating manner, the aerosol generating device 1 may further include a DC / AC converter that converts the DC power of the battery 4000 into AC power.

[0291] The control unit 1000, the sensing unit 2000, the output unit 3000, the user input unit 6000, the memory 7000, and the communication unit 8000 may receive power from the battery 4000 to perform functions. Figure 13 Although not shown in the figure, it may further include a power conversion circuit that converts the power of the battery 4000 and supplies it to each component, such as a low dropout (LDO) circuit or a voltage regulator circuit.

[0292] In one embodiment, the heater 5000 may be formed of any suitable resistive material. For example, suitable resistive materials may be metals or metal alloys, including titanium, zirconium, tantalum, platinum, nickel, cobalt, chromium, hafnium, niobium, molybdenum, tungsten, tin, gallium, manganese, iron, copper, stainless steel, nichrome, etc., but are not limited thereto. Additionally, the heater 5000 may be implemented by a metal heating plate (plate) configured with a metal heating wire (wire), a conductive track, a ceramic heating element, etc., but is not limited thereto.

[0293] In other embodiments, the heater 5000 may be a heater in an induction heating manner. For example, the heater 5000 may include a susceptor that generates heat due to a magnetic field applied by a coil and heats the aerosol generating material.

[0294] The user input unit 6000 may receive information input by the user or output information to the user. For example, the user input unit 6000 may include a keypad, a dome switch, a touchpad (capacitive touch method, piezoresistive resistive film method, infrared induction method, surface ultrasonic conduction method, integral tension measurement method, piezoelectric effect method, etc.), a roller, a toggle switch, etc., but is not limited thereto. Additionally, Figure 12 Although not shown in the figure, the aerosol generating device 1 may further include a connection interface such as a universal serial bus (USB) interface, etc., and be connected to other external devices through a connection interface such as a USB interface, etc. to send and receive information or charge the battery 4000.

[0295] The memory 7000, as the hardware for storing various data processed within the aerosol generating device 1, can store the data that has been processed by the main processor 1000 and the data to be processed. The memory 7000 may include at least one type of storage medium such as a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (such as an SD or XD memory, etc.), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and an optical disk. The memory 7000 can store data such as the operating time of the aerosol generating device 1, the maximum number of puffs, the current number of puffs, at least one temperature curve, and the smoking pattern of the user.

[0296] The communication unit 8000 may include at least one component for communicating with other electronic devices. For example, the communication unit 8000 may include a short-range communication unit 8100 and a wireless communication unit 8200.

[0297] The short-range wireless communication unit 8100 may include a Bluetooth communication unit, a Bluetooth Low Energy (BLE) communication unit, a Near Field Communication unit, a Wi-Fi communication unit, a Zigbee communication unit, an infrared Data Association (IrDA) communication unit, a Wi-Fi Direct (WFD) communication unit, an ultra wideband (UWB) communication unit, an Ant+ communication unit, etc., but is not limited thereto.

[0298] The wireless communication unit 8200 may include, but is not limited to, a cellular network communication unit, an Internet communication unit, a computer network (e.g., local area network LAN or wide area network WAN) communication unit, etc. The wireless communication unit 8200 may also use user information (e.g., International Mobile Subscriber Identity (IMSI)) to confirm and authenticate the aerosol generating device 1 in the communication network.

[0299] The control unit 1000 may control the overall operation of the aerosol generating device 1. In one embodiment, the control unit 1000 may include at least one processor. The processor may be implemented by an array of multiple logic gates, or may be implemented by a combination of a general microprocessor and a memory storing a program that can run on the microprocessor. Additionally, as long as it can be understood by those of ordinary skill in the technical field to which this embodiment belongs, it may also be implemented by other forms of hardware.

[0300] The control unit 1000 may control the temperature of the heater 5000 by controlling the power supply from the battery 4000 to the heater 5000. For example, the control unit 1000 may control the power supply by controlling the switching of a switching element between the battery 4000 and the heater 5000. In other examples, the heating direct circuit may also control the power supply to the heater 5000 according to the control instruction of the control unit 1000.

[0301] The control unit 1000 may analyze the results sensed by the sensing unit 2000 and control the subsequent processes to be executed. For example, the control unit 1000 may control the power supply to the heater 5000 based on the results sensed by the sensing unit 2000 to cause the heater 5000 to start or stop operating. As another example, the control unit 1000 may control the amount of power supplied to the heater 5000 and the power supply time based on the results sensed by the sensing unit 2000 to heat the heater 5000 to a predetermined temperature or maintain it at an appropriate temperature.

[0302] The control unit 1000 may control the output unit 3000 based on the results sensed by the sensing unit 2000. For example, when the number of puffs counted by the puff sensor 2300 reaches a preset number, the control unit 1000 may give the user an advance notice that the aerosol generating device 1 will soon be turned off through at least one of the display unit 3100, the tactile unit 3200, and the audio output unit 3300.

[0303] One embodiment may be implemented in the form of a recording medium (e.g., a program module executed by a computer) including computer-executable instructions. A computer-readable medium may be any available medium accessible by a computer, including volatile and non-volatile media, as well as removable and non-removable media. In addition, a computer-readable medium may include computer storage media and communication media. Computer storage media includes volatile and non-volatile, removable and non-removable media implemented by any method or technology for storing information such as computer-readable instructions, data structures, program modules, or other data. Communication media typically includes computer-readable instructions, data structures, program modules, and other data or other transmission mechanisms of modulated data signals, including any information delivery medium.

[0304] The description of the above embodiments is merely exemplary, and those of ordinary skill in the art should understand that various modifications and other equivalent embodiments can be made therefrom. Therefore, the true scope of protection of the present invention should be determined by the appended claims, and all differences within the scope equivalent to the content described in the claims should be construed as being included within the scope defined by the claims.

[0305] Those of ordinary skill in the art to which this embodiment pertains can understand that it can be embodied in a modified form without departing from the essential characteristics described above. Therefore, the embodiments of the present disclosure should be considered merely illustrative examples and should not be construed as limiting the scope of the present disclosure. The scope of the present disclosure is described in the claims, not in the foregoing description, and any modifications, substitutions, and improvements to the embodiments of the present disclosure should be construed as being included in the present disclosure.

Claims

1. A heater assembly for an aerosol generating device, characterized in that, Comprising: A main body, forming a receiving space for accommodating an aerosol generating article, A coil, for heating the aerosol generating article, the coil applying a magnetic field to heat a receptor disposed in the receiving space, An air flow channel cover, located outside the main body and forming an air flow channel for air to pass through, A pressure sensor, disposed in the air flow channel cover and for sensing a pressure change inside the air flow channel, and A moisture sensing sensor, disposed in a support unit supporting the coil and for sensing the moisture of the aerosol generating article accommodated in the receiving space.

2. The heater assembly for an aerosol generating device according to claim 1, characterized in that, Further comprising: An article sensing sensor, disposed at a position spaced apart from the pressure sensor in the air flow channel cover, and for sensing the type of the aerosol generating article accommodated in the receiving space.

3. The heater assembly for an aerosol generating device according to claim 2, wherein The air flow channel cover includes a sensor accommodating portion for accommodating at least one of the pressure sensor and the article sensing sensor.

4. The heater assembly for an aerosol generating device according to claim 2, wherein The pressure sensor and the article sensing sensor are mounted together on a single mounting member disposed in the air flow channel cover.

5. The heater assembly for an aerosol generating device according to claim 1, characterized in that, Further comprising: A sensor protection cover, coupled to the air flow channel cover so as to cover at least a part of the pressure sensor.

6. The heater assembly for an aerosol generating device according to claim 1, wherein An air inlet for air to flow in is formed in the air flow channel cover, The air inlet is disposed spaced apart from a portion where the aerosol generating article is inserted.

7. The heater assembly for an aerosol generating device according to claim 1, wherein The air flow channel communicates with the receiving space, At least a part of the air moving through the air flow channel passes through the aerosol generating article accommodated in the receiving space and is discharged to the outside.

8. The heater assembly for an aerosol generating device according to claim 1, wherein The moisture sensing sensor is disposed corresponding to a section of the aerosol generating article containing an aerosol generating substance.

9. The heater assembly for an aerosol generating device according to claim 1, wherein At least a part of the moisture sensing sensor includes a curved surface.

10. The heater assembly for an aerosol generating device according to claim 1, wherein Further comprising a sensor bracket, the sensor bracket being disposed outside the support unit; The moisture sensing sensor is coupled to the sensor bracket and is coupled to the support unit.

11. The heater assembly for an aerosol generating device according to claim 1, characterized in that, Further comprising: A first cover, coupled to the main body and including an article insertion portion for inserting the aerosol generating article.

12. The heater assembly for an aerosol generating device according to claim 11, wherein The first cover includes a cover portion heat insulation member, the cover portion heat insulation member extending along the extension direction of the coil and disposed between the coil and the main body.

13. The heater assembly for an aerosol generating device according to claim 11, wherein: it further includes a temperature sensing unit which is disposed inside the main body and senses the temperature of the coil; the first cover further includes an avoidance groove into which the temperature sensing unit is inserted.

14. The heater assembly for an aerosol generating device according to claim 11, characterized in that, It further includes: a retainer which is coupled to the first cover and has an insertion hole and a ridge. The insertion hole communicates with the article insertion portion so that the aerosol generating article can be received in the accommodation space, and the ridge protrudes toward the insertion hole and supports the aerosol generating article.

15. An aerosol generating device, characterized in that, It includes: the heater assembly for an aerosol generating device according to any one of claims 1 to 14, a battery which supplies power to the heater assembly for an aerosol generating device, and a control unit which controls the operation of the heater assembly for an aerosol generating device.

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