CN118102908A - Aerosol generating device - Google Patents

Abstract

An aerosol-generating device is provided. An aerosol-generating device according to the present disclosure comprises: a main body; a container shaped to define a storage space containing a liquid, wherein the container is removably coupled to the body; a core that is elongated and disposed inside the container, wherein the core includes a portion that communicates with the liquid contained in the storage space; a first coil wound around at least a portion of the core and along a longitudinal direction of the core; and a second coil disposed at the body and positioned relative to the first coil, wherein the second coil is configured to inductively heat the first coil.

Description

Aerosol generating device

Technical Field

The following description relates to aerosol-generating devices.

Background

An aerosol-generating device is a device that extracts certain components from a medium or substance by generating an aerosol. The medium may comprise a multicomponent material. The substance contained in the medium may be a multi-component flavouring substance. For example, the substances contained in the medium may include nicotine components, herbal components, and/or coffee components, among others. Recently, active researches have been conducted on aerosol-generating devices.

Disclosure of Invention

Technical problem

It is an object of the present disclosure to address the above and other problems.

It is a further object of the present disclosure to provide an aerosol-generating device wherein the container for storing the aerosol-generating material is replaceable.

It is another object of the present disclosure to provide a structure for electrically connecting a power source to a container.

It is another object of the present disclosure to effectively heat susceptors in a container by induction heating.

Technical proposal

According to an aspect of the present disclosure for achieving the above object, there is provided an aerosol-generating device comprising: a main body; a container shaped to define a storage space containing a liquid, wherein the container is removably coupled to the body; a core that is elongated and disposed inside the container, wherein the core includes a portion that communicates with the liquid contained in the storage space; a first coil wound around at least a portion of the core and along a longitudinal direction of the core; and a second coil disposed at the body and positioned relative to the first coil, wherein the second coil is configured to inductively heat the first coil.

Advantageous effects

According to at least one of the embodiments of the present disclosure, the manufacturing process of the aerosol-generating device may be simplified by removing the electrical connection between the power source and the container.

According to at least one of the embodiments of the present disclosure, the stability of the aerosol-generating device may be improved by removing the electrical connection between the power source and the container.

According to at least one of the embodiments of the present disclosure, the coil for heating the susceptor may be formed as a disc-shaped coil, so that the susceptor in the container may be effectively heated by induction heating.

According to at least one of the embodiments of the present disclosure, by applying a disc-shaped coil having a shape corresponding to the shape of the susceptor, the susceptor in the container can be effectively heated by induction heating.

Further areas of applicability of the present disclosure will become apparent from the detailed description provided hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the disclosure, are given by way of illustration only, since various changes and modifications within the spirit and scope of the disclosure will become apparent to those skilled in the art from this detailed description.

Drawings

Fig. 1 to 12 are diagrams showing examples of an aerosol-generating device according to an embodiment of the present disclosure.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, wherein identical or similar elements are denoted by identical reference numerals, and redundant description thereof will be omitted.

The terms "module" and "unit" of elements used in the following description are given only in view of ease of description, and have no distinguishing meaning or effect.

Further, it should be noted that if it is determined that detailed descriptions of known techniques may obscure the embodiments of the present disclosure, the detailed descriptions of the known techniques will be omitted. Furthermore, the drawings are intended to facilitate easy understanding of the various technical features, and it is to be understood that the embodiments presented herein are not limited by the drawings, and the disclosure should be interpreted to extend to any changes, equivalents, and alternatives other than those specifically set forth in the drawings.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element.

It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.

As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise.

Fig. 1 is a perspective view of an aerosol-generating device 1 according to an embodiment of the present disclosure. Fig. 2 is an exploded perspective view of the aerosol-generating device 1 of fig. 1.

Referring to fig. 1 and 2, an aerosol-generating device 1 comprises: a housing 30, the housing 30 comprising an upper portion 31 and a lower portion 32; a cap 20, the cap 20 being coupled to the upper portion 31; a container 40, the container 40 being disposed in the housing 30 and generating an aerosol in the container 40; and a main body 50, the main body 50 being disposed in the housing 30 and the container being mounted to the main body 50. The rod 10 may be inserted through the cap 20 into the aerosol-generating device 1.

The outer shell 30 may form an exterior of the aerosol-generating device 1 together with the cap 20. The housing 30 may include an upper portion 31 and a lower portion 32. The upper portion 31 and the lower portion 32 may surround the outer periphery of the aerosol-generating device 1. The container 40 and the body 50 may be disposed in the housing 30. The inner surface of the lower portion 32 may be coupled to a protrusion 54 (see fig. 3) of the body 50. The outer surface of the upper portion 31 and the outer surface of the lower portion 32 may form a continuous surface. The user may hold the aerosol-generating device 1 by gripping the outer surface of the housing 30.

The cap 20 may have a hole into which the rod 10 is inserted. Cap 20 may be coupled to upper portion 31. The hole of the cap 20 may communicate with an insertion space 426 (see fig. 4) into which the rod 10 is inserted. The upper portion 31 may be disposed between the cap 20 and the lower portion 32.

An aerosol may be generated in the container 40. The container 40 may be detachably coupled to the body 50. The container 40 and the body 50 may be coupled to each other by a forced coupling. The container 40 may have an elongated shape. An opening 425 (see fig. 3) for insertion of the rod 10 may be formed at one end of the container. The container 40 may be partially covered by the housing 30.

Electronic components such as a battery 100 (see fig. 4), a Printed Circuit Board (PCB), etc. may be mounted in the main body 50. When the container 40 is mounted to the body 50, the body 50 may have a shape elongated in the longitudinal direction of the container. The body 50 may be partially covered by the housing 30.

Fig. 3 and 4 are diagrams illustrating a container 40 and a body 50 according to an embodiment of the present disclosure. Referring to fig. 3 and 4, the aerosol-generating device 1 according to an embodiment of the present disclosure comprises a container 40, a body 50, a core 60, a first coil 70, a second coil 80, a controller 90, and a power source 100.

The container 40 comprises a first portion 42, a second portion 41 and a stopper 43. An aerosol may be generated in the container 40. The container 40 may have a flow path formed therein.

The first portion 42 may include an outer wall 422, an inner wall 423, a storage space 424, and an insertion space 426. The inner wall 423 of the first portion 42 may have an open end 427 and another end 428. The inner wall 423 of the first portion 42 may have an insertion space 426 formed therein. The inner wall 423 of the first portion 42 may be elongated in the longitudinal direction of the container 40. The outer wall 422 of the first portion 42 may surround the inner wall 423 of the first portion 42. The outer wall 422 of the first portion 42 may form at least a portion of the outer surface of the container 40. At least a portion of the storage space 424 may be formed between the inner wall 423 and the outer wall 422 of the first portion 42. At least a portion of the storage space 424 may be formed between the inner wall 415 of the second portion 41 and the outer wall 422 of the first portion 42.

The aerosol-generating material l may be stored in the storage space 424. The aerosol-generating material l may be liquid at room temperature. The aerosol-generating material l may be referred to as a liquid-type material.

The rod 10 may be inserted into the insertion space 426. The insertion space 426 may be in communication with the outside of the aerosol-generating device 1. Rod 10 may be inserted through opening 425 into insertion space 426. The insertion space 426 may be formed inside the inner wall 423 of the first portion 42. The insertion space 426 may be elongated along the inner wall 423.

The second portion 41 may be connected to one end of the first portion 42. The second portion 41 may be integrally formed with the first portion 42. The second portion 41 may include an inner wall 415, a transverse wall 412, a bottom 413, a groove 411, and a flow space 414.

The inner wall 415, the lateral wall 412, and the bottom 413 of the second portion 41 may define a flow space 414 therein. An inlet 412a for allowing the flow space 414 to communicate with the outside of the container 40 may be formed in the lateral wall 412 of the second portion 41.

The inner wall 415 of the second portion 41 may be connected to the inner wall 423 of the first portion 42. The inner wall 415 of the second portion 41 may be integrally formed with the inner wall 423 of the first portion 42. The lateral wall 412 of the second portion 41 may be connected to the outer wall 422 of the first portion 42. The lateral wall 412 of the second portion 41 may be integrally formed with the outer wall 422 of the first portion 42.

The inlet 412a may communicate with the through holes 521 and 522 of the post 52. The air introduced into the inlet 412a through the through holes 521 and 522 may sequentially pass through the flow space 414 and the insertion space 426 to flow to the outside of the container 40.

The bottom 413 of the second portion 41 may connect the inner wall 415 and the lateral wall 412 of the second portion 41. The bottom 413 may have a concave portion 413a. A portion of the bottom 413 may face the opening 425 of the first portion 42. The concave portion 413a may be formed in an inner surface of the bottom 413. The liquid leaked from the core 60 may be held in the concave portion 413a. The concave portion 413a may face the core 60. The concave portion 413a may face the opening 425. The concave portion 413a may be curved to be concave with a predetermined curvature.

The body 50 includes a mounting 51, a post 52, a protrusion 54, and a housing 55. The power supply 100 may be disposed in the main body 50. A controller 90 and a second coil 80 electrically connected to the power source 100 may be installed in the main body 50.

The mount 51 may be disposed in the housing 55. The mount 51 may protrude from the housing 55. Unlike this example, the mount 51 may be formed by recessing a portion of the outer surface of the housing 55. The mounting member 51 may have a mounting space 513, and the container 40 is disposed in the mounting space 513. The mount 51 may be connected to a post 52.

The mount 51 may include a facing surface 511 that faces the bottom 413 of the second portion 41 of the container 40. The facing surface 511 may have a concave portion 511a. The concave portion 511a of the facing surface 511 may have a shape corresponding to the concave portion 413a of the second portion 41 of the container 40. The second coil 80 may have a shape corresponding to the concave portion 511a of the facing surface 511 and the concave portion 413a of the second portion 41.

The concave portion 511a of the facing surface 511 may be concave in the same direction as the concave portion 413a of the second portion 41 of the container 40. The concave portion 511a of the facing surface 511 may be curved to be concave with a predetermined curvature.

The post 52 may be elongated outwardly from the housing 55. The post 52 may have a hollow shape. The column 52 may support the container 40 disposed in the installation space 513. The post 52 may support the outer wall 422 of the first portion 42 of the container 40. The post 52 may support a transverse wall 412 of the second portion 41 of the container 40. The column 52 may have through holes 521 and 522 for communicating the inside and outside of the column 52. The through hole 521 may be in communication with the outside of the aerosol-generating device 1. The through hole 521 may be provided at one end of the post 52.

The housing 55 may have a mounting space 551 formed therein. The power supply 100, the controller 90, and the second coil 80 may be disposed in the installation space 551. The power supply 100 may be electrically connected to the controller 90 and the second coil 80. The controller 90 may control the power supplied from the power source 100 to the second coil 80. The power supply 100 may be a rechargeable battery or a disposable battery. For example, the power source 100 may be a lithium polymer (LiPoly) battery, but is not limited thereto.

The core 60 may be partially disposed in the storage space 424. The core 60 may be made of a porous material. The core 60 may pass through the inner wall 415 of the second portion 41 to connect or extend to the liquid l. The core 60 may have a cylindrical shape. The core 60 may have a circular cross-section.

The first coil 70 may be wound around the core 60 a plurality of times. The first coil 70 may be disposed around the core 60. The first coil 70 may be in contact with the core 60. The first coil 70 may be wound around the core 60 in the longitudinal direction of the elongated core 60. The first coil 70 may be referred to as a susceptor coil.

The second coil 80 may be disposed in the body 50. The second coil 80 may be disposed in the housing 55. The second coil 80 may be disposed adjacent to the first coil 70. The opening 425, the insertion space 426, the first coil 70, and the second coil 80 may be sequentially arranged. The second coil 80 may be formed as a disc-shaped coil having a plurality of turns (see fig. 9). The power supply 100 may apply an Alternating Current (AC) voltage to the second coil 80. The second coil 80 may generate an induced magnetic field. The induced magnetic field generated by the second coil 80 may pass through the first coil 70. The first coil 70 may be inductively heated by the second coil 80. The second coil 80 may be referred to as a heating coil.

Fig. 5 is a diagram illustrating an aerosol-generating device according to an embodiment of the disclosure. Referring to fig. 4 and 5, the second coil 80 may be mounted on the mount 51. The second coil 80 may be disposed on the bottom 511' of the mount 51. Unlike the aerosol-generating device 1 shown in fig. 4, the first coil 70 and the second coil 80 may be arranged closer to each other. Accordingly, the number of magnetic field lines induced by the second coil 80 and passing through the first coil 70 increases, so that the first coil 70 can be efficiently heated by induction heating.

Fig. 6 is a diagram illustrating the interior of a container 40 according to an embodiment of the present disclosure. The container 40 may include a stopper 43. The stopper 43 may protrude from the inner wall 423 of the first portion 42 toward the insertion space 426. The stopper 43 may support the rod 10 inserted into the insertion space 426. The stop 43 may be disposed at an end 427 of the inner wall 423 of the first portion 42. The stopper 43 may be disposed between the insertion space 426 and the flow space 414.

The stopper 43 may be formed in a ring shape. The stop 43 may extend along the inner wall 423 of the first portion 42. The stopper 43 may extend in a direction intersecting the longitudinal direction of the inner wall 423 of the first portion 42. For example, the stopper 43 may extend in a direction orthogonal to the longitudinal direction of the inner wall 423 of the first portion 42.

Fig. 7 is a diagram illustrating an induced magnetic field M generated by a second coil 80 according to an embodiment of the present disclosure. Referring to fig. 7, the power supply 100 may generate an induced magnetic field M by applying an AC voltage to the second coil 80. The generated induced magnetic field M may pass through the first coil 70 wound around the core 60. The first coil 70 may be inductively heated by an induced magnetic field M.

The second coil 80 may be disposed to face the core 60. The second coil 80 may be bent to correspond to a predetermined curvature of the concave portions 413a and 511 a. The induced magnetic field M generated by the bent second coil 80 may be more concentrated on the first coil 70. Accordingly, the second coil 80 may effectively heat the first coil 70 by induction heating.

Fig. 8 is a diagram showing a part of the aerosol-generating device 1 according to an embodiment of the present disclosure. Referring to fig. 8, the second coil 80 may have a shape corresponding to a longitudinal section 611LS of a portion of the core 60.

The core 60 may have a winding portion 611 and an unwinding portion 612, the first coil 70 being wound around the winding portion 611, the first coil 70 being unwound around the unwinding portion 612. The core 60 may be elongated. The core 60 may be elongated with ends 62 and 63 disposed in the storage space 424. The expanded portion 612 of the core 60 may be formed on each of two sides of the core 60.

The coiled portion 611 may be positioned intermediate the uncoiled portion 612 of the core 60. The wound portion 611 of the core 60 and the second coil 80 may be sequentially arranged in the longitudinal direction of the container 40. The second coil 80 may have a shape corresponding to the longitudinal section 611LS of the wound portion 611 in the longitudinal direction of the core 60. The second coil 80 facing the longitudinal section 611LS of the winding portion 611 may have a size larger than the longitudinal section 611LS of the winding portion 611.

Accordingly, the second coil 80 can effectively heat the first coil 70 wound around the winding portion 611 by induction heating.

Fig. 9 and 10 are diagrams illustrating the core 60, the first coil 70, and the second coils 80 and 80' according to an embodiment of the present disclosure. Fig. 9 and 10 show different examples of a part of an aerosol-generating device. Referring to fig. 9 and 10, the second coils 80 and 80' may be spaced apart from the core 60 in a direction intersecting the longitudinal direction LD of the core 60. The second coils 80 and 80' may be spaced apart from the core 60 in the diameter direction DD of the core 60.

The second coil 80 may be wound with a plurality of turns from the innermost turn 82 to the outermost turn 83. The second coil 80 may include a first wire 81 connecting the innermost turn 82 to the power source 100 and a second wire 84 connecting the outermost turn 83 to the power source 100.

The second coil 80' may be wound with a plurality of turns from the innermost turn 82' to the outermost turn 83 '. The second coil 80' may include a third wire 81' connecting the innermost turn 82' to the power supply 100 and a fourth wire 84' connecting the outermost turn 83' to the power supply 100.

The second coil 80' may be bent in the circumferential direction CD of the core 60. The second coils 80 and 80' may face a portion of the outer surface of the core 60. The second coils 80 and 80' may face the outer circumferential surface 61 of the core 60. The second coils 80 and 80' may be bent to correspond to the outer circumferential surface 61 of the core 60. The second coil 80' may have a shape extending in the longitudinal direction LD of the core 60. Accordingly, the second coil 80' having a shape corresponding to the core 60 can effectively heat the first coil 70 by induction heating.

Fig. 11 and 12 are diagrams showing the core 60, the first coil 70, and the second coils 180 and 180'. Fig. 11 and 12 show different examples of a part of an aerosol-generating device. Referring to fig. 11 and 12, the second coils 180 and 180' may be spaced apart from the core 60 in a direction intersecting the longitudinal direction LD of the core 60. The second coils 180 and 180' may be spaced apart from the core 60 in the diameter direction DD of the core 60.

The second coil 180 may be wound with a plurality of turns from the innermost turn 182 to the outermost turn 183. The second coil 180 may include a fifth wire 181 connecting the innermost turn 182 to the power supply 100 and a sixth wire 184 connecting the outermost turn 183 to the power supply 100.

The second coil 180' may be wound with a plurality of turns from the innermost turn 182' to the outermost turn 183 '. The second coil 180' may include a seventh wire 181' connecting the innermost turn 182' to the power supply 100 and an eighth wire 184' connecting the outermost turn 183' to the power supply 100.

The second coil 180' may be bent in the circumferential direction CD of the core 60. The second coils 180 and 180' may face the outer circumferential surface 61 of the core 60. The second coil 180' may be bent to correspond to the outer circumferential surface 61 of the core 60. The second coil 180' may have a shape extending in the longitudinal direction LD of the core 60. Accordingly, the second coil 180' having a shape corresponding to the core 60 may effectively heat the first coil 70 by induction heating.

The second coils 180 and 180' may have a rectangular shape. The longitudinal section 611LS of the winding portion 611 of the cylindrically-shaped core 60 may have a rectangular shape, and the second coils 180 and 180' may have a rectangular shape to correspond to the longitudinal section 611LS of the winding portion 611. Accordingly, the first coil 70 wound around the winding portion 611 can be effectively heated by induction heating.

The second coils 80, 80', 180, and 180' facing the outer circumferential surface 61 of the core 60 may indicate that the magnetic field generated by the second coils 80, 80', 180, and 180' passes through the core 60 and the first coil 70, as shown in fig. 7. Fig. 9 to 12 show examples in which the second coils 80, 80', 180, and 180' face the outer peripheral surface 61 of the core 60.

Referring to fig. 1 to 12, an aerosol-generating device 1 according to an embodiment of the present disclosure comprises: a main body 50; a container 40, the liquid l being contained in the container 40, and the container 40 being detachably coupled to the main body; a core 60, the core 60 being disposed in the container 40 and being elongated, a portion of which is connected or extends to the liquid l; a first coil 70, the first coil 70 being wound around the core 60 in the longitudinal direction of the core 60; and a second coil 80, the second coil 80 being disposed in the body 50 and inductively heating the first coil 70.

According to another embodiment of the present disclosure, the container 40 may include: elongated inner walls 423 and 415, the inner walls 423 and 415 having portions defining an insertion space 426 therein; and an outer wall 422 surrounding the inner walls 423 and 415 such that a storage space 424 containing liquid is formed between the outer wall 422 and the inner walls 423 and 415.

According to another embodiment of the present disclosure, the container 40 may include: a first portion 42, the first portion 42 having an elongated inner wall 423, one end 427 and the other end 428 of the first portion 42 being open and defining an insertion space 426 in the first portion 42; and a second portion 41, the second portion 41 being connected to one end of the first portion 42 and defining a flow space 414 in the second portion 41, the flow space 414 for allowing the inner wall 415 to communicate with the insertion space 426, wherein the core 60 may pass through the inner wall 415 of the second portion 41 to be connected to the storage space 424.

According to another embodiment of the present disclosure, the aerosol-generating device 1 may further comprise a stopper 43, the stopper 43 protruding from the inner wall 423 of the first portion 42 towards the insertion space 426 and being arranged adjacent to an end of the first portion 42 adjacent to the core 60.

According to another embodiment of the present disclosure, the container 40 may further include an inlet 412a formed in the outer wall 422 of the container 40 and allowing the flow space 414 to communicate with the outside of the container 40.

According to another embodiment of the present disclosure, the body 50 may include: a housing 55 accommodating a power source 100 electrically connected to the second coil 80; and a mount 51 provided in the housing 55, detachably coupled to the container 40, and a second coil 80 is provided on the mount 51.

According to another embodiment of the present disclosure, the core 60 may be elongated, have a first end 62 and a second end 63, and may include an outer peripheral surface 61 connecting the first end 62 and the second end 63, wherein the second coil 80 may be formed as a disc-shaped coil wound with a plurality of turns from an innermost turn 82 to an outermost turn 83, and may face the outer peripheral surface 61 of the core 60.

According to another embodiment of the present disclosure, the second coil 80 may be spaced apart from the portion 611 of the outer circumferential surface 61 of the core 60 around which the first coil 70 is wound in a direction DD intersecting the longitudinal direction LD of the core 60.

According to another embodiment of the present disclosure, the second coil 80 may have a shape corresponding to the longitudinal section 611LS of the portion 611 of the core 60 around which the first coil 70 is wound.

According to another embodiment of the present disclosure, the core 60 may be formed in a cylindrical shape, wherein the second coil 80 may be bent in the circumferential direction CD of the core 60 to correspond to the outer circumferential surface 61 of the core 60.

Certain embodiments of the above disclosure or other embodiments are not mutually exclusive or different from each other. Any or all of the elements of the above disclosed embodiments may be combined with one another or with one another in configuration or function.

For example, the configuration "a" described in one embodiment of the present disclosure and the drawing and the configuration "B" described in another embodiment of the present disclosure and the drawing may be combined with each other. That is, although the combination between the configurations is not directly described, the combination is possible except the case where the combination is not described.

While embodiments have been described with reference to a number of exemplary embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.

Claims (13)

1. An aerosol-generating device, the aerosol-generating device comprising:

a main body;

A container shaped to define a storage space containing a liquid, wherein the container is detachably coupled to the body;

a wick that is elongate and disposed inside the container, wherein the wick includes a portion that is in communication with the liquid contained in the storage space;

a first coil wound around at least a portion of the core and along a longitudinal direction of the core; and

A second coil disposed at the body and positioned relative to the first coil, wherein the second coil is configured to inductively heat the first coil.

2. An aerosol-generating device according to claim 1, wherein the container comprises:

An inner wall that is elongated and includes a portion shaped to define an insertion space; and

An outer wall surrounding the inner wall, wherein the outer wall and the inner wall define the storage space containing a liquid.

3. An aerosol-generating device according to claim 2, wherein the container comprises:

A first portion having an elongated inner wall, both one end and the other end of the first portion being shaped to define an opening; and

A second portion having an inner wall and coupled to one end of the first portion and shaped to define a flow space therein for allowing communication with the insertion space,

Wherein the wick passes through an inner wall of the second portion to communicate with the liquid contained in the storage space.

4. An aerosol-generating device according to claim 3, further comprising a stop protruding from an inner wall of the first portion towards the insertion space and being arranged adjacent to an end of the first portion adjacent to the core.

5. An aerosol-generating device according to claim 3, wherein the second portion comprises a transverse wall coupled to an inner wall of the second portion and shaped to define an inlet allowing the flow space to communicate with the outside of the container.

6. An aerosol-generating device according to claim 1, wherein the body comprises:

a housing accommodating a power source electrically connected to the second coil; and

A mount disposed at the housing, detachably coupled to the container, and having the second coil disposed on the mount.

7. An aerosol-generating device according to claim 1, wherein the core is elongate, has a first end and a second end, and has a peripheral surface connecting the first end and the second end,

Wherein the second coil is formed as a disc-shaped coil having a plurality of turns wound from an innermost turn to an outermost turn and faces an outer peripheral surface of the core.

8. An aerosol-generating device according to claim 7, wherein the second coil is spaced apart from a portion of the outer peripheral surface of the core around which the first coil is wound in a direction intersecting the longitudinal direction of the core.

9. An aerosol-generating device according to claim 8, wherein the second coil has a shape corresponding to a longitudinal section of the portion of the core around which the first coil is wound.

10. An aerosol-generating device according to claim 7, wherein the core is formed in a cylindrical shape, and

Wherein the second coil is bent in the circumferential direction of the core to substantially correspond to the outer circumferential surface of the core.

11. An aerosol-generating device, the aerosol-generating device comprising:

a main body;

A power source located in the body;

A container shaped to define a storage space containing a liquid, wherein the container is detachably coupled to the body;

a wick comprising a portion in communication with a liquid contained in the storage space;

A first coil wound around at least a portion of the core and along a longitudinal direction of the core;

A second coil disposed at the body and in electrical communication with the power source, wherein the second coil is positioned relative to the first coil; and

A controller configured to control power supplied to the second coil by the power supply to cause the second coil to generate an induced magnetic field that passes through the first coil and heats the first coil.

12. An aerosol-generating device according to claim 11, wherein the container comprises:

A first portion having an elongated inner wall, both one end and the other end of the first portion being shaped to define an opening; and

A second portion having an inner wall and positioned relative to an end of the first portion and shaped to define a flow space therein for allowing communication with the insertion space,

Wherein the wick passes through an inner wall of the second portion to communicate with the liquid contained in the storage space.

13. An aerosol-generating device according to claim 11, wherein the core is formed in a cylindrical shape, and

Wherein the second coil is bent in the circumferential direction of the core to substantially correspond to the outer circumferential surface of the core.