Aerosol Generator

Abstract

An aerosol generating device is disclosed, the aerosol generating device includes a pipe having an elongated shape forming an insertion space, the pipe including a bottom portion positioned relative to a lower portion of the insertion space, and a heater for heating the insertion space, the bottom portion being recessed downward relative to the insertion space.

Description

[Technical field]

[0001] The present disclosure relates to an aerosol generating device. [Background technology]

[0002] The aerosol generating device is for extracting a predetermined component from a medium or substance via an aerosol. The medium may contain a substance having a variety of components. The substance contained in the medium may be a flavoring substance having a variety of components. For example, the substance contained in the medium may contain a nicotine component, a herb component, and / or a coffee component. In recent years, much research has been conducted on such aerosol generating devices. Summary of the Invention [Problem to be solved by the invention]

[0003] The present disclosure is directed to solving the above-referenced problems and other problems.

[0004] Another object of the present disclosure is to ensure that air is evenly distributed inside the stick.

[0005] Yet another object of the present disclosure is to improve the efficiency of air and / or aerosol flow within the device.

[0006] Yet another object of the present disclosure is to prevent the phenomenon of substances generated by the stick becoming stuck to the device. [Means for solving the problem]

[0007] According to one aspect of the subject matter described in this application, an aerosol generating device includes a pipe having an elongated shape forming an insertion space and including a bottom portion positioned relative to a lower portion of the insertion space, and a heater for heating the insertion space, the bottom portion being recessed downward relative to the insertion space. Effect of the Invention

[0008] At least one of the embodiments of the present disclosure allows air to be evenly distributed inside the stick.

[0009] At least one of the embodiments of the present disclosure may improve the efficiency of air and / or aerosol flow within the device.

[0010] According to at least one of the embodiments of the present disclosure, it is possible to prevent substances generated by the stick from becoming stuck to the device.

[0011] Further scope of applicability of the present disclosure will become apparent from the following detailed description. However, it should be understood that the detailed description and specific examples, such as preferred embodiments of the present disclosure, are given by way of example only, since various changes and modifications within the spirit and scope of the present disclosure will be apparent to those skilled in the art. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Diagram 2] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Diagram 3] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 4] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Diagram 5] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 6] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 7] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 8] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 9] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings. For the sake of simplicity of description with reference to the drawings, the same or similar components are given the same reference numerals, and duplicate descriptions thereof will be omitted.

[0014] The suffixes "module" and "section" for components used in the following description are for ease of description only and do not have any special meaning or role.

[0015] In this disclosure, those well known to those skilled in the art are omitted for the sake of brevity. It should be understood that the accompanying drawings are for the purpose of making various technical features easily understandable, and that the embodiments disclosed herein are not limited to the accompanying drawings. Therefore, the present disclosure should be interpreted as including all modifications, equivalents, and alternatives in addition to those specifically disclosed in the accompanying drawings.

[0016] Terms including ordinal numbers such as first, second, etc. may be used to describe various components, but it should be understood that the components are not limited by the terms, and the terms are used only to distinguish one component from another.

[0017] When an element is said to be "connected" to another element, it will be understood that there can be other elements in between, whereas when an element is said to be "directly connected" to another element, it will be understood that there are no other elements in between.

[0018] The singular expression includes the plural expression unless the context clearly indicates otherwise.

[0019] 1, the aerosol generating device may include at least one of a battery 11, a control unit 12, a sensor 13, and an induction coil 14. The aerosol generating device may include bodies 10 and 20. At least one of the battery 11, the control unit 12, the sensor 13, and the induction coil 14 may be disposed inside a lower body 10 of the aerosol generating device. An upper body 20 may be coupled to an upper end of the lower body 10 or may be formed integrally with the lower body 10.

[0020] The pipe 40 may be disposed inside the upper body 20. The pipe 40 may form an insertion space S. The insertion space S may open to the upper side. The pipe 40 may cover the sides and the bottom of the insertion space S. The stick 400 may be inserted into the insertion space S.

[0021] The induction coil 14 may be provided inside the upper body 20. The induction coil 14 may surround the insertion space S. The heater module 30 may be provided inside the upper body 20. The heater module 30 may be disposed in the insertion space S.

[0022] The induction coil 14 may surround the insertion space S in which the heater module 30 is disposed. The induction coil 14 may surround the heater module 30. The heater module 30 may be heated by a magnetic field generated by an AC current flowing through the induction coil 14. The magnetic field may penetrate the heater module 30 and generate eddy currents within the heater module 30. The current may generate heat in the heater module 30. Alternatively, the heater module 30 may receive current from the battery 11 and generate heat directly, without the need for the induction coil 14.

[0023] The stick 400 may be inserted into the insertion space S. One end of the stick 400 may be exposed to the outside of the upper body 20. The heater module 30 may be inserted into the inside of the stick 400 by penetrating the end of the stick 400. The stick 400 may be heated by the heater module 30. A user may inhale air by holding the end of the stick 400 exposed to the outside in their mouth.

[0024] The battery 11 can supply power to operate the components of the aerosol generating device. The battery 11 can supply power to at least one of the control unit 12, the sensor 13, the induction coil 14, and the heater module 30. The battery 11 can supply power necessary to operate the display, motor, etc. provided in the aerosol generating device.

[0025] The control unit 12 can control the overall operation of the aerosol generation device. The control unit 12 can control the operation of at least one of the battery 11, the induction coil 14, and the sensor 13. The control unit 12 can control the operation of a display, a motor, and the like provided in the aerosol generation device. The control unit 12 can check the state of each component of the aerosol generation device and determine whether the aerosol generation device is in an operable state.

[0026] The sensor 13 can sense the temperature of the heater module 30. The sensor 13 can be disposed adjacent to the heater module 30 or inside the heater module 30. The control unit 12 can control the temperature of the heater module 30 based on the temperature of the heater module 30 sensed by the sensor 13.

[0027] 2 , the inner wall 211 of the upper body 20 may surround the pipe 40. The inner wall 211 may be long in the vertical direction. The inner wall 211 may extend in the circumferential direction. The induction coil 14 may surround the inner wall 211 of the upper body 20. The induction coil 14 may be disposed between the inner wall 211 and the outer wall 212 of the upper body 20. The upper wall 213 of the upper body 20 may connect an upper end of the inner wall 211 and an upper end of the outer wall 212, and cover the space between the inner wall 211 and the outer wall 212.

[0028] The flange 22 may be connected to the lower part of the inner wall 211. The flange 22 may face the bottom 42 of the pipe 40. The flange 22 may be formed in a direction intersecting the direction in which the inner wall 211 extends. The flange 22 may have a disk shape. The flange 22 may fix the heater rod 31.

[0029] The heater module 30 may include a heater rod 31. The heater rod 31 may have a shape that extends vertically. The heater rod 31 may be formed in a hollow shape. The heater rod 31 may have a cylindrical shape. The upper end of the heater rod 31 may have a shape that gradually tapers to a point on the upper side. The stick 400 may be inserted into the heater rod 31. The heater rod 31 may be inserted into the inside of the stick 400 by penetrating the lower end of the stick 400.

[0030] The heater module 30 may include a heater 32. The heater bar 31 may house the heater 32 inside. The heater 32 may be protected by the heater bar 31. The heater 32 may be formed in a film shape wrapped in a cylindrical shape. The heater 32 may heat the insertion space S. The heater 32 may be a resistive heating heater. The heater 32 may receive a current directly from the battery 11 to generate heat. Alternatively, the heater 32 may generate heat by inducing a current by the induction coil 32. The heater 32 may be located at a height corresponding to the induction coil 14 and may be surrounded by the induction coil 14. The heater bar 31 may be formed of a material having good rigidity and thermal conductivity. For example, the heater bar 31 may be formed of a ceramic material. The heater 32 generates heat to heat the heater bar 31, and the heater bar 31 may transfer heat to the stick 400 inserted into the insertion space S. The heater 32 may be a cylindrical shape having a hollow as shown in the figure. However, the heater 32 may be a solid cylindrical shape, or may have a shape corresponding to the hollow of the heater rod 31 so as to fill the hollow of the heater rod 31. The shape of the heater 32 is not limited thereto.

[0031] The plug 33 can close the lower part of the heater 32 inserted into the hollow of the heater rod 31. The plug 33 can prevent the heater 32 from coming out of the hollow of the heater rod 31. The plug 33 can be made of a material with excellent heat resistance so that even if the heater 32 generates heat, there is no or little deformation or damage due to heat.

[0032] The plug 33 may have a shape that extends vertically. As shown in the figure, the plug 33 may have an inverted "T" shape. In this case, the width a of the lower end of the plug 33 may be larger than the width of the part of the plug 33 inserted into the hollow of the heater rod 31. The width a of the lower end of the plug 33 may be the same as the width of the outer circumferential surface of the heater rod 31. The lower end of the plug 33 may cover the lower end of the heater rod 31. As another example, unlike the one shown in the figure, the plug 33 may have an "I" shape.

[0033] The mount 23 may be formed by recessing the flange 22 downward. The mount 23 may be formed at the center of the flange 22. The mount 23 may surround the lower end of the heater rod 31. The lower end of the heater rod 31 may be inserted into and fixed to the mount 23. The plug 33 may be located between the mount 23 and the lower end of the heater rod 31. The lower end of the plug 33 may be inserted into and fixed to the mount 23. The lower end of the heater rod 31 and / or the lower end of the plug 33 may be fixed to the inside of the mount 23 in a push-in manner, or may be fixed by being bonded with an adhesive, or may be fixed by insert injection molding. The mount 23 may surround the lower end of the heater rod 31.

[0034] A mount hole 234 may be formed at the center of the lower end of the mount 23. The mount hole 234 may be formed by insert injection molding. Alternatively, the mount hole 234 may be for allowing air to escape when the heater rod 31 and / or the plug 33 are pressed in. Regardless of the shape of the plug 33, the width a of the plug 33 may be greater than the width b of the mount hole 234 of the mount 23. Thus, the lower end of the plug 33 is supported by the lower end of the mount 23, and the plug 33 cannot be detached from the mount 23.

[0035] The flange hole 24 may be formed by opening the flange 22. The flange hole 24 may be formed on the periphery of the mount 23. A plurality of flange holes 24 may be provided. The plurality of flange holes 24 may be arranged in a circumferential direction around the mount 23. The flange hole 24 may communicate with an external flow passage 26. The external flow passage 26 may be referred to as a flow passage 26.

[0036] 2 to 4, the pipe 40 may be disposed inside a space surrounded by the inner wall 211. The pipe 40 may be coupled or fixed to the inner wall 211. The pipe 40 may form an insertion space S. A side wall 41 of the pipe 40 may surround the periphery of the insertion space S. The side wall 41 of the pipe 40 may be formed in a hollow cylindrical shape. The top of the insertion space S may be open. The bottom 42 of the pipe 40 may cover the bottom of the insertion space S.

[0037] The bottom 42 of the pipe 40 may have a shape that is recessed downward. The bottom 42 may be recessed downward from the insertion space S. The bottom 42 may have a shape that surrounds the lower part of the insertion space S. A diffusion flow path 46 surrounded by the bottom 42 may be formed in the lower part of the insertion space S. The bottom 42 may be spaced downward from the support portion 45.

[0038] The bottom 42 of the pipe 40 may have a shape that gradually expands from the bottom to the top. The bottom 42 may be formed to gradually expand from the first hole 43 toward the side wall 41 of the pipe 40. The bottom 42 may extend radially inwardly and gradually narrower as it goes downward from the side wall 41.

[0039] The bottom 42 of the pipe 40 may have a bent shape. The bottom 42 may have a center of curvature located in the insertion space S. The bottom 42 may have a dome shape surrounding the diffusion flow path 46.

[0040] The first hole 43 may be formed by opening the bottom 42 of the pipe 40. The first hole 43 may communicate with the insertion space S. The first hole 43 may open in the vertical direction. The first hole 43 may have a circular cross-sectional shape. The first hole 43 may be formed in the center of the bottom 42. The first hole 43 may be formed in a position corresponding to the mount 23 or the heater rod 31. The heater rod 31 may protrude from the flange 22 through the first hole 43 into the insertion space S. The diameter of the first hole 43 may be larger than the outer diameter of the heater rod 31.

[0041] The second hole 44 may be formed by opening the bottom 42 of the pipe 40. The second hole 44 may communicate with the insertion space S. The second hole 44 may be formed at the center of the bottom 42 or around the first hole 43. A plurality of second holes 44 may be provided. The plurality of second holes 44 may be arranged in a circumferential direction around the center of the bottom 42 or the first hole 43. The second hole 44 may have a long cross-sectional shape. The second hole 44 may have a cross-sectional shape that is bent inward.

[0042] The bottom 42 of the pipe 40 may be spaced upward from the flange 22 to form an external flow path 26. Air may flow through the external flow path 26. The first hole 43 may be spaced upward from the flange 22. The first hole 43 may connect the insertion space S to the external flow path 26. The second hole 44 may be spaced upward from the flange 22. The second hole 44 may connect the insertion space S to the external flow path 26.

[0043] Therefore, air can be uniformly diffused inside the stick 400. In addition, it is possible to prevent the phenomenon in which substances generated from the stick 400 are solidified on the bottom 42, which will be described later.

[0044] The support portion 45 may be adjacent to the upper edge of the bottom portion 42 of the pipe 40. The support portion 45 may be formed between the edge of the bottom portion 42 and the sidewall 41 of the pipe 40. The support portion 45 may protrude inward from the inner peripheral surface of the sidewall 41 of the pipe 40. The support portion 45 may extend in the circumferential direction. The support portion 45 may have a ring shape. The support portion 45 may face the insertion space S. The support portion 45 may support the periphery of the lower end of the stick 400. The stick 400 may be positioned above the diffusion channel 46 by the support portion 45. When the stick 400 is inserted into the insertion space S, the diffusion channel 46 may contact the lower end of the stick 400.

[0045] Therefore, the support portion 45 can limit the insertion range of the stick 400. In addition, when the stick 400 is inserted into the insertion space S, the edge of the stick 400 can be prevented from being crushed.

[0046] 5, the stick 400 may include a medium portion 410. The stick 400 may include a cooling portion 420. The stick 400 may include a filter portion 430. The cooling portion 420 may be disposed between the medium portion 410 and the filter portion 430. The stick 400 may include a wrapper 440. The wrapper 440 may encase the medium portion 410. The wrapper 440 may encase the cooling portion 420. The wrapper 440 may encase the filter portion 430. The stick 400 may have a cylindrical shape.

[0047] The medium part 410 may include a medium 411. The medium part 410 may include a first medium cover 413. The medium part 410 may include a second medium cover 415. The medium 411 may be disposed between the first medium cover 413 and the second medium cover 415. The first medium cover 413 may be disposed at one end of the stick 400. The first medium cover 413 may cover the lower side of the medium 411. The second medium cover 415 may cover the upper side of the medium 411. The length of the medium part 410 may be 24 mm. Thus, the medium 411 may be prevented from coming off the stick 400. The first medium cover 413 may be omitted.

[0048] The medium 411 may contain substances of various components. The substances contained in the medium may be flavor substances of various components. The medium 411 may contain 5 to 30% of an aerosol-generating substance. The medium 411 may be formed of shredded tobacco leaves, granules, reconstituted tobacco leaves, etc. For example, each of the multiple granules may have a size of 0.4 mm to 1.12 mm. The medium 411 may be filled with granules to about 70%. The medium 411 may be a mixture of granules and reconstituted tobacco leaves, or a mixture of shredded tobacco leaves and reconstituted tobacco leaves. The length L2 of the medium 411 may be 10 mm.

[0049] The first medium cover 413 and the second medium cover 415 may be made of a material having good heat resistance. For example, the first medium cover 413 may be made of an acetate material. The second medium cover 415 may be made of an acetate material. The first medium cover 413 may be made of a paper material. The second medium cover 415 may be made of a paper material. At least one of the first medium cover 413 and the second medium cover 415 may be made of a paper material and may have a wrinkled shape, forming a plurality of gaps between them for air to flow. The gaps may be smaller than the size of each granule of the medium 411. The heater rod 30 may be inserted into the medium 411 by penetrating the first medium cover 413 (see FIG. 7).

[0050] The first medium cover 413 may contain a flavoring agent. The airflow passes through the first medium cover 413 and may carry the flavoring agent contained in the first medium cover 413. In addition, the heater 33 (see FIG. 7) may transmit slight heat to the first medium cover 413 to heat the flavoring agent contained in the first medium cover 413 and generate an aerosol.

[0051] The length L1 of the first medium cover 413 may be shorter than the length L2 of the medium 411. The length L3 of the second medium cover 413 may be shorter than the length L2 of the medium 411. The length L1 of the first medium cover 413 may be designed to an appropriate thickness for supporting the medium 411 or preventing damage. The length L1 of the first medium cover 413 may be 1 mm or more. The length L1 of the first medium cover 413 may be 4 mm to 10 mm. The length L1 of the first medium cover 413 may be 7 mm. The length L2 of the second medium cover 413 may be 7 mm. Therefore, the medium 411 cannot be separated from the medium part 410 and the stick 400. In addition, the amount of heat generated from the heater 32 that is transferred to the flange 50 beyond the lower end of the stick 400 can be reduced, and thermal deformation during the coupling configuration can be prevented, improving structural safety.

[0052] The cooling part 420 may have a cylindrical shape. The cooling part 420 may have a hollow shape. The cooling part 420 may be disposed between the medium part 410 and the filter part 430. The cooling part 420 may be disposed between the second medium part 415 and the filter part 430. The cooling part 420 may be formed in a tubular shape surrounding the cooling passage 424 therein. The cooling part 420 may be thicker than the wrapper 440. The cooling part 420 may be made of a paper material that is thicker than the wrapper 440. The length L4 of the cooling part 420 may be the same as or approximately the same as the length L2 of the medium 411. The length L4 of the cooling part 420 and the cooling passage 424 may be 10 mm. When the stick 400 is inserted into the aerosol generating device (see FIGS. 6 and 7), at least a part of the cooling part 420 may be exposed to the outside of the aerosol generating device.

[0053] Therefore, the cooling unit 420 supports the medium unit 410 and the filter unit 430, and can ensure the rigidity of the stick 400. In addition, the cooling unit 420 supports the wrapper 440 between the medium unit 410 and the filter unit 430, and can ensure a portion where the wrapper 440 is adhered. In addition, the heated air and aerosol can be cooled while passing through the cooling passage 424 inside the cooling unit 420.

[0054] The filter part 430 may be composed of a filter made of acetate material. The filter part 430 may be disposed at the other end of the stick 400. When the stick 400 is inserted into the inside of the aerosol generating device (see FIGS. 6 and 7), the filter part 430 may be exposed to the outside of the aerosol generating device. A user may inhale air by holding the filter part 430 in his / her mouth. The length L5 of the filter part 430 may be 14 mm. The capsule 431 may be disposed inside the filter part 430. The capsule 431 may contain a flavoring substance therein. A user may change the flavor of the stick 400 by bursting the capsule 431.

[0055] The wrapper 440 may wrap or surround the medium part 410, the cooling part 420, and the filter part 430. The wrapper 440 may form the outer shape of the stick 400. The wrapper 440 may be made of a paper material. The adhesive part 441 may be formed on one side edge of the wrapper 440. The wrapper 440 wraps the medium part 410, the cooling part 420, and the filter part 430, and the adhesive part 441 formed on one side edge and the other side edge may be adhered to each other. The wrapper 440 wrapping the medium part 410, the cooling part 420, and the filter part 430 does not have to cover one end and the other end of the stick 400.

[0056] Therefore, the wrapper 440 can fix the medium portion 410 , the cooling portion 420 and the filter portion 430 and prevent them from coming off the stick 400 .

[0057] The first thin film 443 may be disposed at a position corresponding to the first medium cover 413. The first thin film 443 may be disposed between the wrapper 440 and the first medium cover 413, or may be disposed outside the wrapper 440. The first thin film 443 may surround the first medium cover 413. The first thin film 443 may be made of a metal material. The first thin film 443 may be made of an aluminum material. The first thin film 443 may be adhered to or coated on the wrapper 440.

[0058] The second thin film 445 may be disposed at a position corresponding to the second medium cover 415. The second thin film 445 may be disposed between the wrapper 440 and the second medium cover 415, or may be disposed outside the wrapper 440. The second thin film 445 may be made of a metal material. The second thin film 445 may be made of an aluminum material. The second thin film 445 may be attached to or coated on the wrapper 440.

[0059] Therefore, when a capacitance sensor that recognizes a stick is inserted inside the aerosol generating device, the capacitance sensor can detect whether the stick 400 is inserted inside the aerosol generating device.

[0060] 6 and 7, the bottom 42 of the pipe 40 may be recessed downward from the insertion space S to form a diffusion channel 46 therein. The diffusion channel 46 may be formed between the bottom end of the insertion space S or the bottom end of the stick 400 and the bottom 42. The bottom 42 may surround one side of the diffusion channel 46 in a round shape. The bottom 42 may have a curvature center located on the diffusion channel 46 side. The bottom end of the stick 400 may cover the other side of the diffusion channel 46. The diffusion channel 46 may face the medium cover 413 or the medium 411.

[0061] The diffusion channel 46 may have a predetermined height h1 in the vertical direction or in the longitudinal direction of the pipe 40. The height h1 of the diffusion channel 46 may be the height h1 from the first hole 43 to the lower end of the insertion space S or the lower end of the stick 400. The height h2 of the heater 32 from the bottom 42 may be greater than the height h1 of the diffusion channel 46.

[0062] Therefore, when the hot material generated from the stick 400 falls to the bottom 42, it can be cooled quickly while passing through the diffusion channel 46, and the phenomenon in which the material sticks to the bottom 42 and solidifies can be prevented.

[0063] The first hole 43 may be in communication with the diffusion channel 46. The first hole 43 may be adjacent to the center of the diffusion channel 46. The first hole 43 may be formed by opening in the vertical direction. The second hole 44 may be in communication with the diffusion channel 46. The second hole 44 may be adjacent to the edge of the diffusion channel 46. The multiple second holes 44 may be arranged in the circumferential direction. The second holes 44 may be inclined with respect to the vertical direction. The second holes 44 may be positioned lower than the first holes 43.

[0064] The support portion 45 may protrude inward from the inner circumferential surface of the side wall 41 of the pipe 40. The support portion 45 may protrude in the thickness direction of the side wall 41 of the pipe 40. The support portion 45 may be adjacent to an edge of the diffusion channel 46. The support portion 45 may face the insertion space S. The support portion 45 may be formed outside the second hole 44. A length t1 by which the support portion 45 protrudes in the thickness direction of the side wall 41 of the pipe 40 may be thicker than a thickness t2 of the wrapper 440.

[0065] Therefore, the support portion 45 can support the lower edge of the stick 400. The support portion 45 can support the wrapper 440 of the stick 400. In addition, when the stick 400 is inserted into the insertion space S, the edge portion of the stick 400 can be prevented from being crushed.

[0066] The outer diameter D2 of the medium cover 411 or medium 413 may be the same as the inner diameter D2 of the wrapper 440 surrounding the stick 400. The inner diameter D1 of the support 45 may be smaller than the outer diameter D2 of the medium cover 411 or medium 413. The inner diameter D1 of the support 45 may be smaller than the outer diameter D3 of the stick 400. Thus, air can diffuse to the edges of the medium 413.

[0067] When a user holds the stick 400 in their mouth and inhales air, the air can flow into the external flow path 26 through the flange hole 24. The air can flow from the external flow path 26 into the diffusion flow path 46 through the first hole 43 and / or the second hole 44. The air that flows into the diffusion flow path 46 can diffuse to the lower end of the stick 400 through the bottom 42 of the pipe 40. The heater 32 can heat the medium 411 to form an aerosol. The air can be provided to the user along with the aerosol as it passes through the stick 400.

[0068] Therefore, the air can be uniformly diffused inside the stick 400. Also, the air flow resistance is reduced, and the air flowability and suction force can be improved.

[0069] 8 and 9, the upper body 20 may provide an accommodating space 240. The accommodating space 240 may have a cylindrical shape extending vertically. An inner wall 211 may surround the periphery of the accommodating space 240. A bottom of the accommodating space 240 may be covered by a flange 22. The accommodating space 240 may communicate with a flange hole 24. The accommodating space 240 may open upward. The heater rod 31 may be fixed to the flange 22 and protrude long into the accommodating space 240. The outer wall 212 may be spaced apart from the inner wall in a thickness direction to form a space in which the induction coil 14 is disposed. The induction coil 14 may be wound around the inner wall 211. The induction coil 14 may surround the accommodating space 240.

[0070] The upper case 50 may be detachably coupled to the upper body 20. The upper case 50 may cover the upper body 20 and the receiving space 240. The upper end 46 of the pipe 40 may be coupled or fixed to the upper body 20. The upper case 50 may have an opening 54. The opening 54 may be formed at a position corresponding to the opening above the opening of the insertion space S. The opening 54 may communicate with the opening of the insertion space S. The upper case 50 may include a cap 55. The cap 55 may be movably coupled to an upper end of the upper case 50. The cap 55 may move to open and close the opening 54 and the opening of the insertion space S.

[0071] When the upper case 50 is coupled to the upper body 20, the pipe 40 may be inserted into the receiving space 240. The pipe 40 may be detachably inserted into the receiving space 240. The pipe 40 may be surrounded by an inner wall 211 in the receiving space 240. When the pipe 40 is inserted into the receiving space 240, the heater rod 31 may protrude into the insertion space S through a first hole 43 formed in the bottom 42. The heater 32 may be disposed in the insertion space S. The pipe 40 may be referred to as an extractor 40.

[0072] The stick 400 can be inserted into the insertion space S through the opening 54. The heater rod 31 can be inserted into the stick 400. The heater 32 can heat the medium 411 of the stick 400. When the pipe 40 is separated from the receiving space 240, the stick 400 inserted into the insertion space S can be separated from the heater rod 31.

[0073] This allows the stick 400 to be more easily separated from the heater bar 31. It also allows the device to be more easily cleaned.

[0074] 1 to 9, an aerosol generating device according to one aspect of the present disclosure includes a pipe having a long shape forming an insertion space and including a bottom portion positioned relative to a lower portion of the insertion space, and a heater for heating the insertion space, the bottom portion being recessed downward relative to the insertion space.

[0075] According to another aspect of the present disclosure, the base may extend radially inwardly downwardly from a sidewall of the pipe.

[0076] According to another aspect of the present disclosure, the bottom portion may be formed in a dome shape positioned relative to a lower portion of the insertion space.

[0077] According to another aspect of the present disclosure, the bottom of the pipe may be formed in a shape that defines a first hole formed in the center of the bottom.

[0078] According to another aspect of the present disclosure, the aerosol generating device includes a body having a size to accommodate the pipe, a flange formed inside the body and having one side facing one side of the bottom on the outside of the pipe, and a heater rod coupled to the flange and extending through the first hole to protrude into the insertion space, the heater being positioned within the heater rod.

[0079] According to another aspect of the present disclosure, the bottom of the pipe can be spaced from the flange to form a flow path through which air can flow.

[0080] According to another aspect of the present disclosure, the flange may be formed with a shape that defines a flange hole formed around a periphery of the flange to which the heater rod is coupled.

[0081] According to another aspect of the present disclosure, the bottom of the pipe may be formed into a shape that forms a second hole located radially outward from a center of the bottom and communicating with the insertion space.

[0082] According to another aspect of the present disclosure, the bottom of the pipe may be formed into a shape that defines a plurality of second holes arranged in a circumferential direction about a center of the bottom.

[0083] According to another aspect of the present disclosure, the aerosol generating device may include a support portion protruding from an inner circumferential surface of the pipe adjacent to an upper edge of the bottom portion.

[0084] According to another aspect of the present disclosure, the support portion may extend along an inner circumferential surface of the pipe.

[0085] According to another aspect of the present disclosure, a width of the support portion may be smaller than an outer diameter of a stick that can be inserted into the insertion space.

[0086] According to another aspect of the present disclosure, the width of the support may be less than the inner diameter of a wrapper surrounding the stick.

[0087] According to another aspect of the present disclosure, the heater rod is formed in a shape that forms a hollow that opens downward relative to the insertion space, the heater is positioned in the hollow of the heater rod, and the aerosol generating device may further include a plug covering the opening of the hollow.

[0088] According to another aspect of the present disclosure, the aerosol generating device may be formed by the flange, recessed downwardly relative to the insertion space, and surrounding a lower end of the heater rod to be coupled with the heater rod.

[0089] According to another aspect of the present disclosure, the mount may be formed in a shape that defines a mount hole located at a lower end of the mount, and the width of the mount hole may be smaller than the width of the plug such that the lower end of the mount supports the lower end of the plug.

[0090] The specific embodiments or other embodiments of the present disclosure described above are not mutually exclusive or distinct, and the structure or function of any or all of the elements of the embodiments of the present disclosure described above can be combined with other elements or combined with each other.

[0091] For example, configuration A described in one embodiment of this disclosure and the drawings and configuration B described in another embodiment of this disclosure and the drawings can be combined with each other. That is, even if a combination between configurations is not directly described, the combination is possible unless it is described that the combination is not possible.

[0092] Although the embodiments have been described above according to a number of exemplary embodiments, it should be understood that many other variations and embodiments are possible for those skilled in the art that fall within the scope of the principles of the present disclosure. More specifically, various modifications and variations are possible in the components and / or arrangements of the subject combinations within the scope of the present disclosure, the drawings, and the appended claims. In addition to the modifications and variations of the components and / or arrangements, other applications will be apparent to those skilled in the art.

Claims

1. a pipe having an elongated shape forming an insertion space and including a bottom portion positioned relative to a lower portion of the insertion space; A heater for heating the insertion space, An aerosol generating device, wherein the bottom is recessed downward relative to the insertion space.

2. The aerosol generating device of claim 1 , wherein the bottom extends radially inwardly downward from a side wall of the pipe.

3. The aerosol generating device according to claim 2 , wherein the bottom portion has a dome shape positioned relative to a lower portion of the insertion space.

4. The aerosol generating device according to claim 1 , wherein the bottom of the pipe is formed in a shape that defines a first hole formed at the center of the bottom.

5. a body sized to receive the pipe; a flange formed inside the body and having one side facing one side of the bottom portion on an outside of the pipe; a heater rod coupled to the flange and extending through the first hole to protrude into the insertion space, The aerosol generating device of claim 4 , wherein the heater is located within the heater rod.

6. The aerosol generating device of claim 5 , wherein the bottom of the pipe is spaced from the flange to form a flow path through which air flows.

7. The aerosol generating device according to claim 5 , wherein the flange is formed in a shape that forms a flange hole formed around a periphery of the flange to which the heater rod is coupled.

8. The aerosol generating device according to claim 1 , wherein the bottom of the pipe is formed in a shape that forms a second hole located radially outward from the center of the bottom and communicating with the insertion space.

9. The aerosol generating device according to claim 8, wherein the bottom of the pipe is formed in a shape that forms a plurality of second holes arranged in a circumferential direction relative to a center of the bottom, and the plurality of second holes communicate with the insertion space.

10. The aerosol generating device according to claim 1 , further comprising a support portion protruding from an inner peripheral surface of the pipe adjacent to an upper edge of the bottom portion.

11. The aerosol generating device according to claim 10 , wherein the support portion extends along an inner circumferential surface of the pipe.

12. The aerosol generating device according to claim 10 , wherein the width of the support part is smaller than the outer diameter of a stick that can be inserted into the insertion space.

13. The aerosol generating device according to claim 12 , wherein the width of the support portion is smaller than the inner diameter of a wrapper surrounding the stick.

14. The heater rod is formed in a shape that forms a hollow space that is open downward with respect to the insertion space, The heater is located in the hollow of the heater rod, The aerosol generating device according to claim 5 , further comprising a plug covering the hollow opening.

15. The aerosol generating device according to claim 14 , wherein the flange is formed to be recessed downwardly relative to the insertion space and surround a lower end of the heater rod so as to be coupled with the heater rod.

16. The aerosol generating device of claim 15, wherein the mount is formed in a shape that forms a mount hole located at a lower end of the mount, and the width of the mount hole is smaller than the width of the plug so that the lower end of the mount supports the lower end of the plug.

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