Aerosol generator that reduces the odor of mainstream smoke

Abstract

An aerosol generating device for reducing the odor of mainstream smoke according to various embodiments includes a battery for supplying power, a control unit for controlling the operation of the aerosol generating device, a heater for heating an aerosol-generating article contained in the aerosol generating device, and a filtering member that inhales mainstream smoke exhaled by a user, removes odors and toxic substances, and then releases it to the outside.

Description

[Technical field]

[0001] The following embodiments relate to an aerosol generating device that reduces the odor of mainstream smoke. [Background technology]

[0002] Recently, there has been an increasing demand for alternative products that overcome the shortcomings of traditional cigarettes. For example, there has been an increasing demand for devices that generate aerosols by electrically heating cigarette sticks (e.g., cigarette-type electronic cigarettes). Therefore, research into electrically heated aerosol generating devices and cigarette sticks (or aerosol generating articles) applied thereto has been actively conducted. For example, Published Patent Application No. 10-2017-0132823 discloses a non-combustion type flavor inhaler, a flavor source unit, and an atomization unit. Summary of the Invention [Problem to be solved by the invention]

[0003] According to various embodiments, an aerosol generating device is provided that reduces mainstream smoke odor. [Means for solving the problem]

[0004] An aerosol generating device for reducing the odor of mainstream smoke according to various embodiments includes a battery for supplying power, a control unit for controlling the operation of the aerosol generating device, a heater for heating an aerosol-generating article contained in the aerosol generating device, and a filtering member for inhaling mainstream smoke exhaled by a user, removing odors and toxic substances, and then releasing the mainstream smoke to the outside.

[0005] The filtering member according to one embodiment may include a mouthpiece through which the mainstream smoke is inhaled, a main path pipe arranged in contact with the mouthpiece and through which the mainstream smoke flows, a sub-path pipe through which the mainstream smoke purified by a filter unit flows, and a filter unit arranged between the main path pipe and the sub-path pipe for removing odors and toxic substances from the mainstream smoke.

[0006] In one embodiment, the main path pipe extends on the side opposite to the side in contact with the mouthpiece, and the sub path pipe surrounds the outside of the main path pipe and extends parallel to the main path pipe on the side opposite to the side in contact with the mouthpiece.

[0007] In one embodiment, the mainpath pipe may include a plurality of openings.

[0008] In one embodiment, the plurality of openings may be regularly arranged on the surface of the main pass pipe along the longitudinal direction.

[0009] In one embodiment, the opening may extend along the length of the outer surface of the main pass pipe.

[0010] In one embodiment, the plurality of openings may be arranged on the surface of the main path pipe so as to be biased in a direction adjacent to the mouthpiece.

[0011] In one embodiment, the filter unit is replaceable.

[0012] In one embodiment, the filtering member may transport mainstream smoke from a downstream end of the aerosol generating device to an upstream end of the aerosol generating device.

[0013] An aerosol generating device for reducing the odor of mainstream smoke in various embodiments includes a battery for supplying power, a control unit for controlling the operation of the aerosol generating device, a heater for heating an aerosol-generating article contained in the aerosol generating device, and a filtering member for inhaling mainstream smoke exhaled by a user and releasing it to the outside after removing odors and toxic substances, wherein the filtering member includes a first flow path through which the mainstream smoke before purification flows, a second flow path through which the mainstream smoke after purification flows, and a filter unit for purifying the mainstream smoke between the first flow path and the second flow path. Effect of the Invention

[0014] The aerosol generating device for reducing odor of mainstream smoke according to various embodiments can reduce odor of mainstream smoke. The effects of the aerosol generating device for reducing odor of mainstream smoke according to various embodiments are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description. [Brief description of the drawings]

[0015] [Figure 1A] 1 shows an example of an aerosol generating device according to various embodiments with a cigarette inserted therein. [Figure 1B] 1 shows an example of an aerosol generating device according to various embodiments with a cigarette inserted therein. [Figure 1C] 1 shows an example of an aerosol generating device according to various embodiments with a cigarette inserted therein. [Figure 2A] 1 illustrates an aerosol generating device for reducing odor in mainstream smoke according to one embodiment. [Figure 2B] 1 shows a schematic transverse cross-section of a filtering member of an aerosol generating device according to one embodiment; [Diagram 3] 1A-1C are schematic diagrams illustrating longitudinal cross sections of a filtering member of an aerosol generating device according to various embodiments. [Figure 4]1A-1C are schematic diagrams illustrating longitudinal cross sections of a filtering member of an aerosol generating device according to various embodiments. [Diagram 5] 1 shows an aerosol generating device for reducing mainstream smoke odor according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] The terms used in the embodiments are selected as widely used terms as possible while taking into consideration the functions of the present invention, but this may vary depending on the intentions of those skilled in the art, precedents, the emergence of new technologies, etc. In addition, in certain cases, the applicant may arbitrarily select terms, and in such cases, the meanings of such terms will be described in detail in the description of the invention. Therefore, the terms used in the present invention should be defined based on the meanings of the terms and the overall content of the present invention, rather than simply the names of the terms.

[0017] Throughout the specification, when any part "includes" any component, this does not exclude other components, but means that the other components are further included, unless otherwise specified. Furthermore, the terms "unit", "module", etc. described in the specification mean a unit that processes at least one function or operation, which may be embodied as hardware or software, or a combination of hardware and software.

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention may be embodied in various different forms, but is not limited to the embodiments described herein.

[0019] In the following embodiments, "upstream" or "upstream direction" means a direction away from the mouth of a user (smoker), and "downstream" or "downstream direction" means a direction toward the mouth of a user. The terms upstream and downstream are used to describe the relative positions of elements constituting an aerosol-generating article. For example, in the aerosol generating device 1 illustrated in FIG. 1B, the battery 11 is located upstream or in the upstream direction of the control unit 12, and the control unit 12 is located downstream or in the downstream direction of the battery 11.

[0020] In the following embodiments, "puff" refers to inhalation by a user, where inhalation refers to the situation of inhaling through the user's mouth or nose into the user's oral cavity, nasal cavity, or lungs.

[0021] In the following embodiments, "mainstream smoke" refers to smoke and / or aerosol that is drawn directly into a user's mouth when the user inhales on an aerosol-generating article and / or cigarette, and "sidestream smoke" refers to smoke and / or aerosol that is generated directly at the burning part of an aerosol-generating article and / or cigarette. In general, "sidestream smoke" contains more harmful components than "mainstream smoke."

[0022] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0023] 1A to 1C are diagrams showing an example of an aerosol generating device in which a cigarette is inserted.

[0024] 1A, the aerosol generating device 1 includes a battery 11, a control unit 12, and a heater 13. Referring to Fig. 1B and Fig. 1C, the aerosol generating device 1 further includes a vaporizer 14. A cigarette C may be inserted into the internal space of the aerosol generating device 1.

[0025] The aerosol generating device 1 shown in Figures 1A to 1C illustrates components related to this embodiment. Therefore, it would be understood by a person having ordinary skill in the art of this embodiment that the aerosol generating device 1 further includes general-purpose components other than the components illustrated in Figures 1A to 1C.

[0026] In addition, although the aerosol generating device 1 is shown in FIGS. 1B and 1C as including a heater 13, the heater 13 may be omitted if necessary.

[0027] In Fig. 1A, the battery 11, the control unit 12, and the heater 13 are illustrated as being arranged in a line. In Fig. 1B, the battery 11, the control unit 12, the vaporizer 14, and the heater 13 are illustrated as being arranged in a line. In Fig. 1C, the vaporizer 14 and the heater 13 are illustrated as being arranged in parallel. However, the internal structure of the aerosol generating device 1 is not limited to that shown in Figs. 1A to 1C. In other words, the arrangement of the battery 11, the control unit 12, the heater 13, and the vaporizer 14 may be changed depending on the design of the aerosol generating device 1.

[0028] When a cigarette C is inserted into the aerosol generation device 1, the aerosol generation device 1 may activate the heater 13 and / or the vaporizer 14 to generate an aerosol. The aerosol generated by the heater 13 and / or the vaporizer 14 passes through the cigarette C and is delivered to the user.

[0029] If necessary, the aerosol generation device 1 may heat the heater 13 even when no cigarette C is inserted in the aerosol generation device 1 .

[0030] The battery 11 supplies power used for operating the aerosol generation device 1. For example, the battery 11 supplies power so that the heater 13 or the vaporizer 14 can heat, and supplies power necessary for the control unit 12 to operate. The battery 11 can also supply power necessary for the display, sensor, motor, and the like installed in the aerosol generation device 1 to operate.

[0031] The control unit 12 generally controls the operation of the aerosol generating device 1. Specifically, the control unit 12 controls the operation of not only the battery 11, the heater 13, and the vaporizer 14, but also other components included in the aerosol generating device 1. The control unit 12 may also check the state of each component of the aerosol generating device 1 to determine whether the aerosol generating device 1 is in an operable state.

[0032] The control unit 12 includes at least one processor. The processor may be realized by an array of multiple logic gates, or may be realized by a combination of a general-purpose microprocessor and a memory storing a program executed by the microprocessor. Those skilled in the art will understand that the processor may also be realized by other forms of hardware.

[0033] The heater 13 is heated by power supplied from the battery 11. For example, the heater 13 may be disposed outside the cigarette once the cigarette is inserted into the aerosol generating device 1. The heated heater 13 can thus increase the temperature of the aerosol-generating material within the cigarette.

[0034] The heater 13 may be an electric resistive heater. For example, the heater 13 may include an electric conductive track, and the heater 13 may be heated by passing an electric current through the electric conductive track. However, the heater 13 is not limited to the above example, and may be any heater capable of heating to a desired temperature. Here, the desired temperature may be preset in the aerosol generating device 1, or may be set to a desired temperature by a user.

[0035] Alternatively, as a different example, the heater 13 may be an induction heater. Specifically, the heater 13 may include an electrically conductive coil for inductively heating the cigarette, and the cigarette may include a susceptor that can be heated by the induction heater.

[0036] For example, the heater 13 may include a tube-type heating element, a plate-type heating element, a needle-type heating element, or a rod-type heating element, and can heat the inside or outside of the cigarette C depending on the shape of the heating element.

[0037] Furthermore, a plurality of heaters 13 may be disposed in the aerosol generating device 1. Here, the plurality of heaters 13 may be disposed so as to be inserted inside the cigarette C, or may be disposed outside the cigarette C. Furthermore, some of the plurality of heaters 13 may be disposed so as to be inserted inside the cigarette C, and the rest may be disposed outside the cigarette C. Furthermore, the shape of the heaters 13 is not limited to the shapes shown in Figs. 1A to 1C, and may be manufactured into various shapes.

[0038] The vaporizer 14 heats the liquid phase composition to generate an aerosol, which can be transmitted to the user through the cigarette C. In other words, the aerosol generated by the vaporizer 14 travels along an airflow passage of the aerosol generating device 1, which can be configured to allow the aerosol generated by the vaporizer 14 to be transmitted to the user through the cigarette C.

[0039] For example, the vaporizer 14 includes, but is not limited to, a liquid storage unit, a liquid transfer means, and a heating element. For example, the liquid storage unit, the liquid transfer means, and the heating element may be included in the aerosol generation device 1 as independent modules.

[0040] The liquid storage may store a liquid phase composition. For example, the liquid phase composition may be a liquid containing a tobacco-containing substance including a volatile tobacco aroma component, or a liquid containing a non-tobacco substance. The liquid storage may be manufactured to be detachable / attachable to the vaporizer 14, or may be manufactured integrally with the vaporizer 14.

[0041] For example, the liquid phase composition may include water, a solvent, ethanol, a plant extract, a flavoring, a flavoring agent, or a vitamin mixture. The flavoring agent may include, but is not limited to, menthol, peppermint, spearmint oil, various fruit flavoring ingredients, and the like. The flavoring agent may include ingredients that can provide various flavors or tastes to the user. The vitamin mixture may include, but is not limited to, a mixture of at least one of vitamin A, vitamin B, vitamin C, and vitamin E. The liquid phase composition may also include an aerosol-forming agent, such as glycerin and propylene glycol.

[0042] The liquid transfer means transfers the liquid phase composition of the liquid containment to the heating element, for example, the liquid transfer means may be a wick such as, but not limited to, cotton fiber, ceramic fiber, glass fiber, or porous ceramic.

[0043] The heating element is an element for heating the liquid phase composition transferred by the liquid transfer means. For example, the heating element may be, but is not limited to, a metal hot wire, a metal hot plate, a ceramic heater, etc. The heating element may also be made of a conductive filament such as a nichrome wire, and may be arranged in a structure wound around the liquid transfer means. The heating element is heated by the supply of electric current, and can transfer heat to the liquid composition in contact with the heating element, thereby heating the liquid composition. As a result, an aerosol can be generated.

[0044] For example, but not limited to, the vaporizer 14 may be referred to as a cartomizer or an atomizer.

[0045] Meanwhile, the aerosol generating device 1 may further include general-purpose components in addition to the battery 11, the control unit 12, the heater 13, and the vaporizer 14. For example, the aerosol generating device 1 may include a display capable of outputting visual information and / or a motor for outputting tactile information. The aerosol generating device 1 may also include at least one sensor (such as a puff detection sensor, a temperature detection sensor, or a cigarette insertion detection sensor). The aerosol generating device 1 may also be manufactured with a structure that allows external air to flow in and internal gas to flow out even when a cigarette C is inserted.

[0046] Although not shown in Fig. 1A to Fig. 1C, the aerosol generating device 1 may form a system together with a separate cradle. For example, the cradle may charge the battery 11 of the aerosol generating device 1. Alternatively, the heater 13 may heat the aerosol generating device 1 in a state where the cradle and the aerosol generating device 1 are combined.

[0047] The cigarette C is similar to a typical combustible cigarette. For example, the cigarette C is divided into a first portion including an aerosol-generating material and a second portion including a filter or the like. Alternatively, the second portion of the cigarette C may also include an aerosol-generating material. For example, the aerosol-generating material in the form of granules or capsules may be inserted into the second portion.

[0048] The entire first part may be inserted into the aerosol generating device 1, and the second part may be exposed to the outside. Alternatively, only a part of the first part may be inserted into the aerosol generating device 1, or the entire first part and a part of the second part may be inserted. A user may inhale the aerosol while biting the second part in the mouth. Here, the aerosol is generated by external air passing through the first part, and the generated aerosol is delivered to the user's mouth by passing through the second part.

[0049] As one example, the outside air may flow in through at least one air passage formed in the aerosol generation device 1. For example, the opening and closing of the air passage formed in the aerosol generation device 1 and / or the size of the air passage may be adjusted by the user. Thus, the amount of smoke, smoking sensation, etc. may be adjusted by the user. As another example, the outside air may flow in to the inside of the cigarette C through at least one hole formed in the surface of the cigarette C.

[0050] The aerosol generating device that reduces the odor of mainstream smoke will be described in detail below with reference to Figs. 2A to 5.

[0051] FIG. 2A shows an aerosol generating device 2 for reducing mainstream smoke odor according to one embodiment.

[0052] Referring to Figure 2A, an aerosol generating device 2 in one embodiment includes a battery 21 (e.g., battery 11 in Figures 1A to 1C), a control unit 22 (e.g., control unit 12 in Figures 1A to 1C), a heater 23 (e.g., heater 13 in Figures 1A to 1C) and a filtering member 24.

[0053] In one embodiment, the battery 21, the controller 22, and the heater 23 are the same as or similar to the battery 11, the controller 12, and the heater 13 of the aerosol generating device 1 according to one embodiment.

[0054] In one embodiment, the filtering member 24 can filter out malodors and / or toxic substances by inhaling mainstream smoke exhaled by a user. The filtering member 24 according to one embodiment filters the malodors and / or toxic substances in the mainstream smoke exhaled by a user and then releases them to the outside.

[0055] 2A , in one embodiment, the filtering member 24 includes a mouthpiece 242, a main path pipe 244, a sub path pipe 246, and a filter unit 248. The filtering member 24 according to one embodiment can transport mainstream smoke exhaled by a user from the downstream end to the upstream end of the aerosol generating device 2.

[0056] In one embodiment, the mouthpiece 242 may be arranged alongside an elongated cavity (not shown) in which the cigarette C is housed. In one embodiment, when the cigarette C is housed in the aerosol generation device 2, the length of the mouthpiece 242 is preferably the same as or shorter than the length of the cigarette C protruding from the end of the aerosol generation device 2. When the length of the mouthpiece 242 is shorter than the length of the cigarette C protruding, a user can bite the end of the cigarette C to inhale the aerosol and then bite the mouthpiece 242 to exhale mainstream smoke.

[0057] In one embodiment, the main path pipe 244 may form a path (e.g., a first flow path P1 (see FIG. 5)) through which mainstream smoke exhaled from the user and transmitted through the mouthpiece 242 primarily flows. The main path pipe 244 according to one embodiment may be in contact with the mouthpiece 242. The main path pipe 244 according to one embodiment extends on the side opposite to the side in contact with the mouthpiece 242. The main path pipe 244 according to one embodiment includes a plurality of openings H, which are regularly arranged along the longitudinal direction on the surface of the main path pipe 244. The plurality of openings H according to one embodiment may be arranged on the surface of the main path pipe 244 biased toward the direction adjacent to the mouthpiece 242.

[0058] In one embodiment, the sub-path pipe 246 may form a secondary path (e.g., a second flow path P2 (see FIG. 5 )) through which mainstream smoke transmitted through the multiple openings H in the main-path pipe 244 flows. The sub-path pipe 246 according to one embodiment may be formed to surround the main-path pipe 244 and extend toward the side opposite to the side facing the mouthpiece 242. The sub-path pipe 246 according to one embodiment extends in a direction parallel to the main-path pipe 244 according to one embodiment.

[0059] In an embodiment, the filter unit 248 may be disposed between the main path pipe 244 and the sub-path pipe 246. The filter unit 248 according to an embodiment may remove malodors and / or toxic and harmful substances from the mainstream smoke exhaled by the user while the mainstream smoke is transferred from a primary path through the main path pipe 244 to a secondary path through the sub-path pipe 246. The filter unit 248 according to an embodiment may include a filter material such as paper, acetyl cellulose fiber, HEPA filter, and activated carbon. The filter unit 248 according to an embodiment may include a specially treated material that adsorbs only malodor components of the mainstream smoke exhaled by the user. The filter unit 248 according to an embodiment is replaceable.

[0060] FIG. 2B shows a schematic transverse cross section of the filtering member 24 of the aerosol generation device 2 according to one embodiment.

[0061] 2B, a main path pipe 244 is disposed at the innermost part of the filtering member 24 according to an embodiment. A sub-path pipe 246 is disposed at the outermost part of the filtering member 24 according to an embodiment. A filter unit 248 may be disposed between the main path pipe 244 and the sub-path pipe 246 according to an embodiment. The main path pipe 244 according to an embodiment may include a plurality of openings H disposed at regular intervals along the periphery of the main path pipe 244. The toxic mainstream smoke flowing through the main path pipe 244 moves to the sub-path pipe 246 through the plurality of openings H, and in the process, the malodor and / or toxic substances may be filtered through the filter unit 248.

[0062] 3 and 4 show schematic longitudinal cross-sections of the filtering member 34 and / or 44 (eg, filtering member 24 of FIGS. 2A and 2B) of an aerosol generating device according to various embodiments.

[0063] Referring to FIG. 3, in one embodiment, the multiple openings H are regularly arranged along the longitudinal direction on the surface of the main path pipe 344 (for example, the main path pipe 244 in FIG. 2A). In one embodiment, the multiple openings H may be circular, elliptical, or polygonal in shape, but are not necessarily limited thereto. In one embodiment, when the shape of the multiple openings H is elliptical, the major axis of the ellipse may be arranged so as to be inclined with respect to the longitudinal direction of the main path pipe 344. When the major axis of the ellipse is arranged so as to be inclined with respect to the longitudinal direction of the main path pipe 344, the mainstream smoke exhaled by the user moves from the downstream side to the upstream side to form a vortex, and can easily move from the main path pipe 344 to the sub-path pipe 346 side.

[0064] 4, in one embodiment, the multiple openings H may extend along the longitudinal direction of the outer surface of the main path pipe 444 (e.g., the main path pipe 244 in FIG. 2A). In one embodiment, the multiple openings H extend along the longitudinal direction while forming an inclined angle with respect to the longitudinal direction of the main path pipe 444. When the multiple openings H extend along the longitudinal direction while forming an inclined angle with respect to the longitudinal direction of the main path pipe 444, the mainstream smoke exhaled by the user moves from the downstream side to the upstream side to form a vortex, and can easily move from the main path pipe 444 to the sub-path pipe 446 side.

[0065] FIG. 5 shows an aerosol generating device for reducing the odor of mainstream smoke according to another embodiment.

[0066] Referring to Figure 5, an aerosol generating device 5 (e.g., aerosol generating device 2 of Figure 2A) according to another embodiment includes a battery 51 (e.g., battery 21 of Figure 2A), a control unit 52 (e.g., control unit 22 of Figure 2A), a heater 53 (e.g., heater 23 of Figure 2A) and a filtering member 54 (e.g., filtering member 24 of Figure 2A).

[0067] The filtering member 54 according to an embodiment includes a mouthpiece 542, a main path pipe 544, a sub path pipe 546, and a filter unit 548. The filtering member 54 according to an embodiment can transport mainstream smoke exhaled by a user from a downstream end to an upstream end of the aerosol generating device 5. The filtering member 54 according to an embodiment can inhale mainstream smoke exhaled by a user, remove odors and / or toxic substances, and then release the smoke to the outside. The main path pipe 544 according to an embodiment may include a plurality of openings H (for example, openings H in FIGS. 2A to 4).

[0068] The filtering member 54 according to one embodiment includes a first flow path P1 and a second flow path P2. The first flow path P1 according to the embodiment is a path through which mainstream smoke exhaled by a user that flows into the filtering member 54 through a mouthpiece 542 flows in a main path pipe 544. The second flow path P2 according to the embodiment is a path through which the unpurified mainstream smoke that has flowed along the first flow path P1 passes through an opening H of the main path pipe 544, is purified by a filter unit 548, and then flows along a subpath pipe 546 to the upstream side of the aerosol generating device 5. The purified mainstream smoke that flows through the second flow path P2 can be released to the outside through an opening included in an end of the second flow path P2.

[0069] According to the aerosol generating device 2 and / or 5 having the structure described above, the mainstream smoke exhaled by the user, which contains a large amount of toxic substances and is the source of bad odors, is purified within the aerosol generating device 2 and / or 5 and then discharged to the outside, thereby reducing the risk of secondhand smoke and discomfort for people around the user of the aerosol generating device 2 and / or 5.

[0070] Although various embodiments have been described above with reference to the drawings, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques may be performed in a different order than described, and / or the components of the described systems, structures, devices, circuits, etc. may be combined or combined in a different manner than described, or may be replaced or substituted by other components or equivalents, and still achieve suitable results.

[0071] Therefore, the scope of the present invention is not limited to the disclosed embodiment, but should be defined by the scope of the appended claims and equivalents thereof.

Claims

1. An aerosol generating device for reducing the odor of mainstream smoke, comprising: A battery for supplying power; A control unit for controlling the operation of the aerosol generating device; a heater for heating an aerosol-generating article contained in the aerosol generating device; a filtering member that receives mainstream smoke exhaled by a user, removes malodorous substances from the mainstream smoke, and releases the removed mainstream smoke to the outside; Includes The filtering member includes: a mouthpiece through which the mainstream smoke is inhaled; a main pass pipe arranged in contact with the mouthpiece and through which the mainstream smoke flows; a sub-pass pipe through which mainstream smoke purified by the filter unit flows; The filter unit is disposed between the main pass pipe and the sub pass pipe, and removes malodorous substances from the mainstream smoke; Including, the main path pipe includes a plurality of openings; An aerosol generating device, wherein the plurality of openings are at an inclined angle with respect to the longitudinal direction of the outer surface of the main path pipe.

2. The main pass pipe extends to the opposite side to the side in contact with the mouthpiece, The aerosol generating device according to claim 1 , wherein the sub-path pipe surrounds the exterior of the main path pipe and extends alongside the main path pipe.

3. The aerosol generating device according to claim 1 , wherein the plurality of openings are regularly arranged on the surface of the main path pipe along the longitudinal direction.

4. The aerosol generating device as described in claim 1, wherein the multiple openings are elliptical in shape and the long axis of the elliptical shape is inclined at an angle relative to the longitudinal direction of the main path pipe.

5. The aerosol generating device according to claim 1 , wherein the plurality of openings extend along a longitudinal direction of an outer surface of the main path pipe.

6. The aerosol generating device according to claim 1 , wherein the plurality of openings are arranged on the surface of the main path pipe so as to be biased toward the mouthpiece.

7. The aerosol generating device according to claim 1 , wherein the filter unit is replaceable.

8. 2. The aerosol generating device according to claim 1, wherein the filtering member transports the mainstream smoke from an end of the aerosol generating device facing the mouthpiece to an end of the aerosol generating device facing away from the mouthpiece.

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