Aerosol Generator

Abstract

An aerosol generating device is disclosed, which includes a body having an insertion space formed therein, a heater located within the insertion space, a sensing coil located around the insertion space, a capacitance sensor coupled to the sensing coil and measuring a capacitance near the sensing coil, an induction sensor coupled to the sensing coil and measuring an inductance near the sensing coil, and a switch electrically connecting the sensing coil to one of the capacitance sensor and the induction sensor.

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 provide an aerosol generating device that can sense a variety of changes through a single sensing element.

[0005] Yet another object of the present disclosure is to provide an aerosol generating device with improved sensing sensitivity and sensing accuracy. [Means for solving the problem]

[0006] According to one aspect of the subject matter described in the present application, an aerosol generating device includes a body having an insertion space formed therein, a heater positioned within the insertion space, a sensing coil positioned around the insertion space, a capacitance sensor coupled to the sensing coil and measuring a capacitance near the sensing coil, an induction sensor coupled to the sensing coil and measuring an inductance near the sensing coil, and a switch electrically connecting the sensing coil to any one of the capacitance sensor and the induction sensor. Effect of the Invention

[0007] According to at least one of the embodiments of the present disclosure, an aerosol generating device capable of sensing a variety of changes through a single sensing element can be provided.

[0008] According to at least one of the embodiments of the present disclosure, an aerosol generating device with improved sensing sensitivity and sensing accuracy can be provided.

[0009] 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 embodiments, 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]

[0010] [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. [Figure 10] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 11] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 12] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 13] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 14] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 15] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 16] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 17] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 18] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings. The same reference numerals are given to the same or similar components even if they are illustrated in different drawings, and duplicated descriptions thereof will be omitted.

[0012] The suffixes "module" and "section" for components used in the following description are used only for ease of description of the specification. "Module" and "section" do not have different meanings or roles from each other.

[0013] In addition, in the following description of the embodiments disclosed in this specification, if a specific description of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed description will be omitted. In addition, the attached drawings are provided to facilitate understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings. Therefore, the attached drawings should be interpreted as including all modifications, equivalents, and alternatives included in the idea and scope of the present disclosure.

[0014] 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.

[0015] 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.

[0016] The singular expression includes the plural expression unless the context clearly indicates otherwise.

[0017] 1 and 2, the aerosol generating device may include at least one of a battery 101 and a control unit 102. At least one of the battery 101 and the control unit 102 may be disposed inside a body 10 of the aerosol generating device. The body 10 may have a shape that is elongated vertically.

[0018] The stick S may be inserted into the body 10. The lower end of the stick S may be inserted into the body 10, and the upper end of the stick S may protrude to the outside of the body 10. A user may inhale air by holding the upper end of the stick 200 exposed to the outside in their mouth. The body 10 may have an insertion space 14 that is open at the upper side so that the stick S can be inserted. The heater 50 may heat the stick S. The heater 50 may be disposed in the insertion space 14.

[0019] 1, the aerosol generating device may include a heater 50. The heater 50 may protrude upward from a lower portion of the insertion space 14. The heater 50 may be detachably coupled to the body 10 (see FIGS. 5 and 6).

[0020] The heater 50 may include a heater rod 51. The heater rod 51 may form the outer shape (or appearance) of the heater 50. The heater rod 51 may extend vertically. The heater rod 51 may have a cylindrical shape. The heater rod 51 may have a hollow opening on the lower side. The upper end of the heater rod 51 may be formed to be pointed upward. The heater rod 51 may have high thermal expansion, excellent thermal insulation, and low thermal conductivity. The heater rod 51 may have high rigidity. For example, the heater rod 51 may be made of zirconia. However, the material of the heater rod 51 is not limited thereto.

[0021] The heater 50 may include a heating part 52. The heating part 52 may be inserted into the hollow inside of the heater bar 51. The heating part 52 may extend vertically. The heating part 52 may have a cylindrical shape. The heating part 52 may be made of a resistive metal. Heat generated from the heating part 52 may be transferred to the outside of the heater 50 via the heater bar 51. The heating part 52 may be disposed at a height corresponding to the third insertion space 34.

[0022] 2, the heat generating portion 52 of the heater 50 may be fixed inside the stick S, and when the stick S is inserted into the insertion space 14, the heater 50 may be disposed in the insertion space 14. When the stick S is removed from the insertion space 14, the heater 50 may be removed from the insertion space 14.

[0023] The aerosol generating device may include an induction coil 60 surrounding the heater 50. The induction coil 60 may surround the insertion space 14. The induction coil 60 may cause the heater 50 to generate heat. The heater 50 is a susceptor, and the heat generating part 52 of the heater 50 may generate heat by a magnetic field generated by an AC current flowing through the induction coil 60. The magnetic field may penetrate the heater 50 and generate an eddy current in the heater 50. The current may cause the heat generating part 50 to generate heat. The heat generated from the heat generating part 52 may pass through the heater rod 51 and be transferred to the outside of the heater 50. The induction coil 60 may be disposed at a height corresponding to the heat generating part 52.

[0024] The induction coil 60 may include an inner coil 61 and an outer coil 62. The inner coil 61 and the outer coil 62 may be wound around the insertion space 14. The outer coil 62 may be disposed outside the inner coil 61. The inner coil 61 and the outer coil 62 may be formed integrally. One end of the inner coil 61 and one end of the outer coil 62 may be connected to each other. The outer coil 62 may extend from one end of the inner coil 61 and be wound around the inner coil 61. The outer coil 62 may be wound in the same direction as the inner coil 61 (see FIG. 14). The radius of the outer coil 62 may be larger than the radius of the inner coil 61.

[0025] Therefore, the strength of the magnetic field can be increased by increasing the number of turns of the coil without increasing the vertical length of the coil. Also, since the outer surface of the coil is manufactured to be flat, it is possible to improve the moldability with the external attachment structure. This will be described later.

[0026] The aerosol generating device may include a sensing coil 70. The sensing coil 70 may surround a portion of the insertion space 14. The sensing coil 70 may be aligned vertically with the induction coil 60. For example, the sensing coil 70 may be disposed below the induction coil 60. As another example, the sensing coil 70 may be disposed above the induction coil 60 (see FIGS. 17 and 18). To improve sensing sensitivity, the position of the sensing coil 70 may be adjusted in consideration of the positions of the heater 50 and the stick S.

[0027] The battery 101 can supply power to operate the components of the aerosol generating device. The battery 101 can supply power to at least one of the control unit 102, the heater 50, the induction coil 60, and the sensing coil 70. The battery 101 can supply power necessary to operate a display, a motor, etc. installed in the aerosol generating device.

[0028] The control unit 102 may control the overall operation of the aerosol generating device. The control unit 102 may control the operation of at least one of the battery 101, the heater 50, the induction coil 60, and the sensing coil 70. The control unit 102 may control the operation of a display, a motor, etc. installed in the aerosol generating device. The control unit 102 may check the state of each component of the aerosol generating device and determine whether the aerosol generating device is in an operable state. The control unit 102 may receive a value sensed by the sensing coil 70 and determine the surrounding state.

[0029] 3 and 4, the control unit 102 may be mounted on a substrate 80. Alternatively, the substrate 80 may be electrically connected to another substrate on which the control unit 102 is mounted. A capacitance sensor 76 may be mounted on the substrate 80. The capacitance sensor 767 may be connected to the control unit 102. An induction sensor 77 may be mounted on the substrate 80. The induction sensor 77 may be connected to the control unit 102. A switch 75 may be mounted on the substrate 80. The switch 75 may be connected to one of the capacitance sensor 76 and the induction sensor 77. The switch 75 may switch the connection from one of the capacitance sensor 76 and the induction sensor 77 to the other. The switch 75 may be referred to as a switching element 75. The substrate 80 may be electrically connected to a battery 101 (see FIGS. 1 and 2). The control unit 102 may control the operation of the switch 75.

[0030] The sensing coil 70 may be electrically connected to the substrate 80. The sensing coil 70 may be connected to one of a capacitance sensor 76 and an induction sensor 77 through a switch 75. The switch 75 may disconnect the sensing coil 70 and the capacitance sensor 76 and connect the sensing coil 70 and the induction sensor 77. The switch may disconnect the sensing coil 70 and the induction sensor 77 and connect the sensing coil 70 and the capacitance sensor 76. The sensing coil 70 may be connected to the capacitance sensor 76 and measure a capacitance value in the vicinity. The sensing coil 70 may be connected to the induction sensor 77 and measure an inductance value in the vicinity. The capacitance change and the inductance change may change depending on a change in the state of an object in the vicinity of the sensing coil 70. The control unit 102 may sense or determine various states based on the capacitance value. The control unit 102 may sense or determine various states based on the inductance value. The control unit 102 can control the operation of various components of the aerosol generating device based on the sensed conditions.

[0031] For example, in the case of the stick S inserted into the insertion space 14, the humidity (or water content) may change depending on the degree of use. Here, a change in capacitance may occur around the sensing coil 70, and the capacitance value around the sensing coil 70 measured by the capacitance sensor 76 may change. Thus, the control unit 102 can detect the degree of use of the stick S.

[0032] For example, the capacitance value around the sensing coil 70 measured by the capacitance sensor 76 may differ depending on whether the stick S is inserted or not inserted into the insertion space 14. Therefore, the control unit 102 can detect whether the stick S is inserted into the insertion space 14.

[0033] For example, the inductance value around the sensing coil 70 measured by the induction sensor 77 may be different depending on whether the stick S is inserted or not inserted into the insertion space 14. Therefore, the control unit 102 can detect whether the stick S is inserted into the insertion space 14.

[0034] For example, different types of sticks S contain different internal and external materials, and the inductance value around the sensing coil 70 measured by the induction sensor 77 may differ depending on the type of stick S inserted into the insertion space 14. Thus, the control unit 102 can detect what type of stick S has been inserted into the insertion space 14.

[0035] A capacitance change is more sensitive to a humidity change and is therefore more suitable for recognizing the amount of usage of the stick S. A change in inductance may be more suitable for recognizing a particular stick S. In consideration of this, the control unit 102 may control the switch 75 to connect the capacitance sensor 76 and the sensing coil 70 to recognize the amount of usage of the stick S. The control unit 102 may also control the switch 75 to connect the induction sensor 77 and the sensing coil 70 to recognize the type of the stick S.

[0036] The function of the sensing coil 70 is not limited to the above, and it can be used as long as it can determine the surrounding conditions through factors that cause changes in capacitance or inductance in the surroundings. For this purpose, a lookup table indicating the capacitance value around the sensing coil 70 measured by the capacitance sensor 76 and the corresponding change in the surrounding environment can be stored in memory. In addition, a lookup table indicating the inductance value around the sensing coil 70 measured by the induction sensor 77 and the corresponding change in the surrounding environment can be stored in memory.

[0037] Therefore, it is possible to sense the change in capacitance and the change in inductance through a single sensing body. Also, by separating the area where the induction coil 60 heats the heater 50 from the area where the sensing coil 70 senses, it is possible to reduce the noise that the induction coil 60 affects the sensing (see Figs. 1 and 2). Also, it is possible to arrange the induction coil 60 closer to the insertion space 14 and the stick S, which improves the sensing sensitivity and accuracy (see Figs. 1 and 2).

[0038] 5 and 6, the body 10 may have a first insertion space 14 therein. The first insertion space 14 may be open to the upper side. The first insertion space 14 may have a cylindrical shape extending vertically. The first insertion space 14 may be defined by a body pipe 11 formed inside the body 10. The body pipe 11 may include a lateral wall 111 surrounding the periphery of the first insertion space 14 and a bottom wall 112 covering the bottom of the first insertion space 14. The bottom wall 112 may be formed at the bottom of the body pipe 11. The side wall 111 of the body pipe 11 may be referred to as an inner lateral wall 111 of the body 11.

[0039] The heater holder 20 may be detachably inserted into the first insertion space 14. The heater holder 20 may have a second insertion space 24 therein. The second insertion space 24 may be open to the upper side. The second insertion space 24 may have a cylindrical shape. The second insertion space 24 may be defined by a pipe 20' of the heater holder 20. The pipe 20' may include a side wall 21 surrounding the periphery of the second insertion space 24 and a bottom wall 22 covering the bottom of the second insertion space 24. The bottom wall 22 of the pipe 20' may be referred to as a bottom 22 or a mount 22. The bottom wall 22 of the pipe 20' may form the bottom 22 of the heater holder 20. The heater 50 may be coupled or fixed to the heater holder 20. The pipe 20' may be referred to as a heater holder pipe 20'.

[0040] The extractor 30 may be detachably inserted into the second insertion space 24. The extractor 30 may have a third insertion space 34 therein. The third insertion space 34 may be open on one side. The third insertion space 34 may have a cylindrical shape. The third insertion space 34 may be defined by a side wall 31 and a bottom wall 32 of the extractor 30. The outer circumferential surface of the extractor 30 may have a cylindrical shape.

[0041] The lower end of the stick S may be inserted into the third insertion space 34, and the upper end of the stick S may protrude outside the aerosol generating device. The heater 50 may heat the first insertion space 14, the second insertion space 24, and the third insertion space 34. The heater 50 may heat the stick S inserted into the third insertion space 34.

[0042] Therefore, it is possible to easily replace the heater 50. Although replacement may be difficult because the size of the insertion spaces 14, 24, 34 and the heaters 50 arranged in the insertion spaces 14, 24, 34 is very small, the user can easily replace the heater 50 by separating the heater holder 20 from the aerosol generating device and placing a new heater holder 20 in the aerosol generating device.

[0043] In addition, foreign matter generated from the sticks S does not remain around the heater 50 or in the heater holder 20, but can be extracted through the extractor 30. Therefore, cleaning of the aerosol generating device around the heater 50 is easy, and management convenience can be improved. In addition, factors that reduce the performance of the heater 50 are reduced, the durability of the heater 50 is improved, and the replacement cycle of the heater 50 can be extended. In addition, factors that deteriorate the taste of the sticks S can be reduced.

[0044] The lower end of the heater 50 may be fixed to the mount 22. The heater 50 may extend long toward the opening of the second insertion space 24. The heater 50 may be formed in a cylindrical shape with an upper end pointed upward. As another example, the heater 50 may have a shape extending in the circumferential direction and be coupled to the side wall 21 of the heater holder 20. However, this is merely an example, and the shape of the heater 50 is not limited to those described above or illustrated, as long as it is coupled to the heater holder 20 and can heat the stick S inserted into the third insertion space 34.

[0045] The heater holder 20 may be insert injection molded onto the heater 50. The heater holder 20 may have high heat resistance and excellent rigidity. For example, the heater holder 20 may be made of polyetheretherketone (PEEK). However, the material of the heater holder 20 is not limited thereto.

[0046] The through hole 35 may be formed by opening the bottom wall 32 of the extractor 30. The through hole 35 may be open at the top and bottom. When the extractor 30 is inserted into the second insertion space 24, the heater 50 may protrude into the third insertion space 34 through the through hole 35. When the stick S is inserted into the third insertion space 34, the heater 50 may be inserted into the bottom of the stick S.

[0047] The induction coil 60 may surround the first insertion space 14. The induction coil 60 may surround the second insertion space 24. The induction coil 60 may surround the third insertion space 34. The induction coil 60 may be wound around the side wall 111 of the body pipe 11. The induction coil 60 may surround the heater 50. The induction coil 60 may cause the heater 50 to generate heat.

[0048] Therefore, the stick S can be easily separated from the heater 50. A user can easily separate the stick S from the heater 50 by separating the extractor 30 and the heater holder 20 from each other. The stick S inserted inside the extractor 30 can be more easily separated from the extractor 30 by being separated from the heater 50. The stick S can be separated even when the extractor 30 and the heater holder 20 are not separated from each other.

[0049] In addition, foreign matter generated from the sticks S does not remain around the heater 50 or in the heater holder 20, but can be extracted through the extractor 30. Therefore, cleaning of the aerosol generating device around the heater 50 is easy, and management convenience can be improved. In addition, factors that reduce the performance of the heater 50 are reduced, the durability of the heater 50 is improved, and the replacement cycle of the heater 50 can be extended. In addition, factors that deteriorate the taste of the sticks S can be reduced.

[0050] The inner coil 61 and the outer coil 62 may be wound around the side wall 111 of the body pipe 11. The outer coil 62 may be disposed outside the inner coil 61. The inner coil 61 and the outer coil 62 may surround the heater 50. The outer coil 62 may extend from one end of the inner coil 61. For example, the inner coil 61 may be wound upward around the side wall 111 of the body pipe 11, and the outer coil 62 may extend from the upper end of the inner coil 61 and be wound downward around the inner coil 61.

[0051] Therefore, the strength of the magnetic field can be increased by increasing the number of turns of the coil without increasing the vertical length of the coil.

[0052] The sensing coil 70 may be disposed below the induction coil 60. The sensing coil 70 may surround a lower portion of the first insertion space 14. The sensing coil 70 may surround a lower portion of the side wall 111 of the body pipe 11.

[0053] Therefore, it can be disposed closer to the body pipe 11 and the first insertion space 14. Also, since it surrounds the insertion space 14, the sensing range can be increased. Also, the sensor does not need to sense through the induction coil 60. Therefore, the sensing sensitivity and sensing accuracy can be improved.

[0054] The sensing coil 70 may surround the lower part of the pipe 20' of the heater holder 20. The sensing coil 70 may be disposed adjacent to the lower wall 32 of the extractor 30. The induction coil 60 may be disposed at a height corresponding to the heating part 52. The sensing coil 70 may be disposed at a different height than the heating part 52. For example, the sensing coil 70 may be disposed at a lower height than the heating part 52. The heating part 52 may be disposed at a higher height than the lower wall 32 of the extractor 30.

[0055] The heater holder 20 may be disposed between the body 10 and the extractor 30. The side wall 111 of the body pipe 11 may surround the side wall 21 of the heater holder 20. The bottom wall 112 of the body pipe 11 may face the bottom wall 22 of the heater holder 20. The side wall 21 of the heater holder 20 may surround the side wall 31 of the extractor 30. The bottom wall 22 of the heater holder 20 may face the bottom wall 32 of the extractor 30.

[0056] A side wall 31 of the extractor 30 may be spaced inward from a side wall 21 of the heater holder 20. A bottom wall 32 of the extractor 30 may be spaced upward from a bottom wall 22 of the heater holder 20. Air flows between the extractor 30 and the heater holder 20, passes through the through hole 35, and is then provided to the stick S inserted into the third insertion space 34.

[0057] The upper wall 12 of the body 10 may extend horizontally outward from an upper end of the body pipe 11. The upper wall 12 of the body 10 may cover an upper end of the induction coil 60. An outer lateral wall 13 of the body 10 may extend downward from an outer end of the upper wall 12 of the body 10. The outer lateral wall 13 of the body 10 may face a side wall 111 of the body pipe 11. The outer lateral wall 13 of the body 10 may be spaced outward from the body pipe 11. The induction coil 60 may be disposed between the body pipe 11 and the outer lateral wall 13 of the body 10.

[0058] The upper case 40 may be detachably coupled to the body 10. The upper case 40 may be coupled to the upper side of the body 10. The upper case 40 may cover the periphery of the first insertion space 14 and the periphery of the upper part of the body 10. The upper case 40 may have an insertion opening 44. The stick S may be inserted into the insertion opening 44. The upper case 40 may include a cap 45 for opening and closing the insertion opening 44. The cap 45 may slide laterally to open and close the insertion opening 44. The heater holder 20 may be disposed between the body 10 and the upper case 40.

[0059] The upper case 40 may include an upper case body 41. The insertion opening 44 may be formed by opening the upper case body 41 at the top and bottom. The insertion opening 44 may be formed at a position offset from the center of the upper case body 41 to one side. The lower surface of the upper case body 41 may have a shape corresponding to the upper wall 12 of the body 10. The lower surface of the upper case body 41 may extend in a horizontal direction parallel to the upper wall 12 of the body 10. The cap 45 may be slidably installed on the upper side of the upper case body 41.

[0060] The upper case 40 may include upper case wings 42. The upper case wings 42 may extend downward from both sides of the upper case body 41. A portion of the side of the upper case body 41 may be exposed between the pair of upper case wings 42. The upper case wings 42 may be referred to as upper case grips 42.

[0061] The extractor 30 may be coupled to the upper case 40. An upper end of the extractor 30 may be coupled to the upper case 40, and a lower end of the extractor 30 may protrude downward from the upper case 40. The extractor 30 may be coupled to a position corresponding to the insertion opening 44. The insertion opening 44 may be located above the third insertion space 34. The insertion opening 44 may connect the third insertion space 34 to the outside of the aerosol generating device.

[0062] An upper end of the extractor 30 may be coupled to the upper case body 41. The extractor 30 may extend downward from the upper case body 41. The extractor 30 may be disposed between a pair of upper case wings 42.

[0063] The body 10 may include body wings 16. The body wings 16 may extend upward from the edges of the upper wall 12 of the body 10. The body wings 16 may be formed in a pair facing each other around the upper portion of the body 10. The body wings 16 may be formed at a position offset from the upper case wings 42.

[0064] When the upper case 40 is coupled to the body 10, the upper case 40 may form the exterior of the upper portion of the aerosol generating device. When the upper case 40 is coupled to the body 10, the body wings 16 may cover the sides of the upper case body 41 exposed between the upper case wings 42. When the upper case 40 is coupled to the body 10, the upper case wings 42 may cover the outer wall 13 of the body 10.

[0065] Therefore, the user can more easily separate the extractor 30 from the body 10. The user can separate the extractor 30 by grasping the exterior of the upper case 40, without the inconvenience of gripping the extractor 30 inserted into the second insertion space 24. For example, the user can easily separate the upper case 40 and the extractor 30 from the body 10 by grasping the pair of upper case wings 42 and pulling them away from the body 10.

[0066] The extractor 30 may include an engagement protrusion 37. The engagement protrusion 37 may protrude horizontally outward from the outer circumferential surface of the upper end of the extractor 30. The engagement protrusion 37 may include a plurality of engagement protrusions. The plurality of engagement protrusions 26 may be arranged spaced apart from one another in the circumferential direction. The engagement protrusion 37 may be inserted into and engaged with a groove formed in the upper case body 41 around the insertion opening 44, thereby fixing the extractor 30 to the upper case 40. The engagement protrusion 37 may mesh with the upper case body 41 in the circumferential direction.

[0067] Therefore, during the process of inserting and removing the stick S, the extractor 30 can be prevented from rotating in the circumferential direction relative to the upper case 40.

[0068] The heater holder 20 may include an extension 23. The extension 23 may be formed on the upper end of the heater holder 20. The extension 23 may extend horizontally outward from the upper end of the pipe 20'. The extension 23 may have a plate shape. The extension 23 may be formed such that one side is longer around the pipe 20'. The extension 23 may be referred to as a heater holder extension 23.

[0069] The extension 23 may have a shape corresponding to the upper wall 12 of the body 10. The extension 23 may be horizontally formed on the upper wall 12 of the body 10. When the pipe 20' is inserted into the first insertion space 14, the extension 23 may be supported or seated on the upper wall 12 of the body 10. The upper wall 12 of the body 10 may support the extension, and the extension 23 may support the pipe 20'. The pipe 20' may hang down from the extension 23 and be spaced upward from the bottom 112 of the body pipe 11 to form an air gap. The outer circumferential surface of the pipe 20' may be spaced inward from the side wall 111 of the body pipe 11 to form an air gap.

[0070] The extension 23 may have a shape corresponding to the lower surface of the upper case body 41. The extension 23 may be formed horizontally with respect to the lower surface of the upper case body 41. When the upper case 40 is coupled to the body 10, the extractor 30 is inserted into the pipe 20′ so that the extension 23 may come into contact with the lower surface of the upper case body 41.

[0071] The first connecting member 27 may be fixed to the heater holder 20. For example, the first connecting member 27 may be fixed to the extension portion 23. The first connecting member 27 may be fixed to the inside or the outer surface of the extension portion 23. The heater holder 20 may be insert injection molded with the first connecting member 27 and the heater 50.

[0072] The extension 23 may include a first extension 231 and a second extension 232. The first extension 231 may extend to one side from the pipe 20', and the second extension 232 may extend to the other side from the pipe 20'. The first extension 231 may extend longer than the second extension 232. The outer circumference of the first extension 231 may be larger than the outer circumference of the second extension 232. The first extension 231 may be formed wider in the horizontal direction than the second extension 232. Based on the pipe 20' extending downward from the plate-shaped extension 23, one side may be defined as the first extension 231, and the other side may be defined as the second extension 232. The pipe 20' may extend downward from a portion biased to one side from the center of the extension 23.

[0073] The first connecting member 27 may be fixed to a first extension portion 231, which is a portion of the extension portion 23 that extends longer on one side from the pipe 20'. The first connecting member 27 may have a plate shape. The first connecting member 27 may be widely disposed in the horizontal direction on the first extension portion 23. The position at which the first connecting member 27 is disposed is not limited thereto. For example, the first connecting member 27 may be fixed to the pipe 20'.

[0074] The first connecting member 27 may be made of a magnetic material. The first connecting member 27 may be a ferromagnetic material. For example, the first connecting member 27 may be made of stainless steel. However, the material of the first connecting member 27 is not limited thereto.

[0075] The second connecting member 47 may be fixed to the upper case 40. The second connecting member 47 may be fixed inside the upper case body 41. The second connecting member 47 may be disposed adjacent to the lower surface of the upper case body 41. However, the position at which the second connecting member 47 is disposed is not limited thereto. For example, the second connecting member 47 may be fixed to the upper case wing 42. As another example, the second connecting member 47 may be fixed to the extractor 30. The second connecting member 47 may be disposed at a position corresponding to the first connecting member 27.

[0076] The second connecting member 47 can exert an attractive force on the first connecting member 27. For example, the first connecting member 27 can be a ferromagnetic material, and the second connecting member 47 can be a magnet. However, the materials of the first connecting member 27 and the second connecting member 47 are not limited thereto.

[0077] The third connecting member 17 may be fixed inside the body 10. The third connecting member 17 may be disposed adjacent to the upper wall 12 of the body 10. The third connecting member 17 may be disposed at a position corresponding to the first connecting member 27. However, the position at which the third connecting member 17 is disposed is not limited thereto. For example, the third connecting member 17 may be disposed adjacent to the side wall 111 of the body pipe 11. The third connecting member 17 may exert an attractive force on the first connecting member 27. For example, the first connecting member 27 may be a ferromagnetic material, and the third connecting member 17 may be a magnet. However, the materials of the first connecting member 27 and the third connecting member 17 are not limited thereto.

[0078] 4 and 5, the frame 18 may be disposed under the upper body 10a. The frame 18 may be disposed outside the body pipe 11. The frame 18 may support the induction coil 60. The frame 18 may support the sensing coil 70. The induction coil 60 may be disposed on the upper side of the frame 18. The sensing coil 70 may be disposed on the upper side of the frame 18.

[0079] The frame 18 may include a first frame 181 and a second frame 182. The second frame 182 may be coupled to an upper side of the first frame 181. The second frame 182 may be surrounded by an upper wall 12, an inner wall 111, and an outer wall 13 of the upper body 10a. The third coupling member 17 may be disposed between the upper wall 12 of the upper body 10a and the second frame 182. The third coupling member 17 may be fixed to a fixing portion 187 formed on one side of the second frame 182. A portion of the first frame 181 may be disposed below the body pipe 11. The other portion of the first frame 181 may be inserted into the second frame 182.

[0080] The coil arrangement space 114 may be defined by an inner wall 111, an upper wall 12, and an outer wall 13 of the upper body 10a. The coil arrangement space 114 may surround the inner wall 111. The coil arrangement space 114 may be open to the bottom.

[0081] The induction coil hole 64 may be surrounded by the induction coil 60 and open up and down. The sensing coil hole 74 may be surrounded by the sensing coil 70 and open up and down. The induction coil hole 64 and the sensing coil hole 74 may be aligned up and down. For example, the sensing coil hole 74 may be disposed below the induction coil hole 64. The frame hole 184 may be formed by opening the second frame 182. The frame hole 184 may be formed below the induction coil hole 64 and the sensing coil hole 74. The induction coil hole 64, the sensing coil hole 74 and the frame hole 184 may have a shape corresponding to the side wall 11 of the body pipe 11. The pipe holder 187 may surround the frame hole 184. The pipe holder 187 may be formed in the frame 18. The pipe holder 187 may have a ring shape. The pipe holder 187 may be a part of the second frame 182.

[0082] The body pipe 11 may pass through the induction coil hole 64 and the sensing coil hole 74. When the body pipe 11 passes through the induction coil hole 64 and the sensing coil hole 74, the induction coil 60 and the sensing coil 70 are disposed in the coil arrangement space 114, and the body pipe 11 and the first insertion space 14 may be surrounded by the induction coil 60 and the sensing coil 70. The periphery of the lower part of the body pipe 11 may be inserted into the frame hole 184 and surrounded by the pipe holder 187. The periphery of the lower part of the body pipe 11 may be supported by the pipe holder 187.

[0083] 7 and 8, the induction coil 60 is connected to the substrate 80, the operation of which is controlled by the controller 102, and the power can be received from the battery 101. The sensing coil 70 is connected to the substrate 80, the operation of which is controlled by the controller 102, and the power can be received from the battery 101.

[0084] The substrate 80 may be coupled to the frame 18. For example, the substrate 80 may be coupled to one side of the frame 18 via a screw 85. The substrate 80 may be disposed vertically on one side of a first frame 181. The substrate 80 may be coupled to the first frame 181 and disposed below a second frame 182.

[0085] The substrate 80 may include a connector 83. The connector 83 may include a pair of first connectors 831 and a pair of second connectors 832. The first connector 831 may connect the induction coil 60 to the substrate 80. Both ends of the induction coil 60 may be electrically connected to each of the pair of first connectors 831. The second connector 832 may connect the sensing coil 70 to the substrate 80. Both ends of the sensing coil 70 may be electrically connected to each of the pair of second connectors 832. The connector 83 may be disposed on an upper side of the substrate 80 and adjacent to a lower side of the second frame 182.

[0086] 9, the splitter 186 may be disposed above the board 80 and the connector 83. The splitter 186 may be formed on one side of the frame 18. For example, the splitter 186 may protrude from a pipe holder 187. The splitter 186 may include a plurality of splitters. The plurality of splitters 186 may be arranged spaced apart from each other above the connector 83 around the frame hole 184. A splitter hole 185 may be formed between the plurality of splitters 186.

[0087] The splitter hole 185 may include a plurality of splitter holes. Each of the plurality of splitter holes 185 may be formed at a position corresponding to each of the plurality of connectors 83. For example, the splitter hole 185 may include four splitter holes.

[0088] The splitter holes 185 may include a pair of first splitter holes 1851 and a pair of second splitter holes 1852. Each of the pair of first splitter holes 1851 may be located corresponding to an upper side of each of the pair of first connectors 831. Each of the pair of second splitter holes 1852 may be located corresponding to an upper side of each of the pair of second connectors 832.

[0089] The supporter 183 may protrude from the frame 18. The supporter 183 may be formed around a frame hole 184. The supporter 183 may support the induction coil 60.

[0090] 10 to 12, for convenience, only the body pipe 11 of the upper body 10a (see FIG. 7) is shown so that the induction coil 60 and the sensing coil 70 can be seen. The induction coil 60 and the sensing coil 70 may surround the body pipe 11. The sensing coil 70 may be disposed below the induction coil 60.

[0091] The induction coil 60 may include an inner coil 61 and an outer coil 62. An upper end of the inner coil 61 may be connected to an upper end of the outer coil 62, and the inner coil 61 and the outer coil 62 may be integrally formed. The inner coil 61 may be wound in one direction (e.g., counterclockwise) around the body pipe 11 from the upper side, and the outer coil 62 may extend from the upper end of the inner coil 61 and be wound in one direction (e.g., counterclockwise) around the inner coil 61 from the lower side. The lower end of the outer coil 62 may be adjacent to the lower end of the inner coil 61. Thus, the body pipe 11 may be wound twice.

[0092] Each of the pair of induction lead wires 631, 632 may be connected to each of the pair of first connectors 831. Thus, the induction coil 60 may be electrically connected to the substrate 80. Each of the pair of induction lead wires 631, 632 may extend downward from both ends of the induction coil 60. The first induction lead wire 631 may extend downward from a lower end of the inner coil 61. The second induction lead wire 632 may extend downward from a lower end of the outer coil 62. The upper ends of the first induction lead wire 631 and the second induction lead wire 632 may be formed to have a similar height.

[0093] In the case of a conventional induction coil 60' shown in Fig. 11(a), a pair of induction lead wires 631', 632' extend downward from the upper and lower ends of the induction coil 60'. In this case, the length of the induction lead wire 632' extending downward from the upper end is too long, making the structure unstable and more exposed to the risk of disconnection. In addition, since the induction lead wire 632' overlaps the outside of the induction coil and extends downward, the outer shape of the induction coil 60' protrudes in the radial direction, which reduces the ease of assembly and molding with other structures.

[0094] However, in the case of the present disclosure shown in Fig. 11(b), the induction coil 60 includes an inner coil 61 and an outer coil 62, and among a pair of induction lead wires 631, 632, the first induction lead wire 631 may extend downward from the lower end of the inner coil 61, and the second induction lead wire 632 may extend downward from the lower end of the outer coil 62. The length L2 of the second induction lead wire 632 may be shorter than the length L2' of the corresponding induction lead wire 632' of the conventional induction coil 60'. The length L2 of the second induction lead wire 632 and the length L1 of the first induction lead wire 631 may be similar to each other.

[0095] Therefore, the structural safety of the lead wires can be improved and the risk of breakage can be reduced. In addition, the outer shape of the induction coil 60 can be rounded to improve assembly and molding compatibility with external structures. For example, assembly and structural molding compatibility with the outer wall 13 of the upper body 10a (see FIG. 7) can be improved. In addition, the magnetic field strength can be increased without increasing the vertical length of the induction coil 60.

[0096] Each of the first and second induction lead wires 631 and 632 may be located at a position corresponding to each of the pair of first splitter holes 1851. Each of the first and second induction lead wires 631 and 632 may be located at a position corresponding to each of the pair of first terminals 831. The first induction lead wire 631 may pass through one of the pair of first splitter holes 1851 and be connected to one of the pair of first terminals 831. The second induction lead wire 632 may pass through the other of the pair of first splitter holes 1851 and be connected to the other of the pair of first terminals 831.

[0097] Each of the pair of sensing lead wires 73 may extend downward from each of both ends of the sensing coil 70. For example, the pair of sensing lead wires 73 may be located between the pair of induction lead wires 631, 632. Each of the pair of sensing lead wires 73 may be located at a position corresponding to each of the pair of second splitter holes 1852. The pair of sensing lead wires 73 may be located at a position corresponding to each of the pair of second terminals 832. Each of the pair of sensing lead wires 73 may pass through each of the pair of second splitter holes 1852 and be connected to each of the pair of second terminals 832. The sensing lead wires 73 may be supported by a pipe holder 187 that surrounds the lower part of the body pipe 11 (see FIG. 13).

[0098] Each of the pair of sensing lead wires 73, the first induction lead wire 631, and the second induction lead wire 632 may be disposed between a plurality of splitters 186. The splitters 186 may arrange each of the pair of sensing lead wires 73, the first induction lead wire 631, and the second induction lead wire 632 in a separated state to prevent contact between them. The splitters 186 may support the pair of sensing lead wires 73, the first induction lead wire 631, and the second induction lead wire 632 and fix their respective positions.

[0099] Therefore, contact and interference between the lead wires can be prevented, the lead wires can be stably arranged, and breakage of the lead wires can be prevented.

[0100] Since the induction coil 60 is wound twice around the body pipe 11, the radius of the outer circumferential surface may be larger than that of the sensing coil 70 wound around the body pipe 11. A predetermined width t may be formed in the radial direction between the outer circumferential surface of the sensing coil 70 and the outer circumferential surface of the induction coil 60. The induction coil 60 may protrude from the sensing coil 70 in the radial direction by a predetermined width t.

[0101] The supporter 183 may support the induction coil 60 and / or the sensing coil 70. For example, the supporter 183 may support a lower portion of the outer coil 62. For example, the supporter 183 may support an outer circumferential surface of the sensing coil 70. The supporter 183 may space or separate the induction coil 60 and the sensing coil 70 so that they do not come into contact with each other.

[0102] In one embodiment, the supporter 183 may be formed on the frame 18. In another example, the supporter 183 may be formed by protruding outward from the side wall 111 of the body pipe 11 between the induction coil 60 and the sensing coil 70. However, this is only a part of the embodiment, and the position where the supporter 183 is formed is not limited thereto. Any position may be used as long as it can prevent contact between the induction coil 60 and the sensing coil 70 and support the induction coil 60 and / or the sensing coil 70.

[0103] The induction lead wires 631, 632 may pass outside the sensing coil 70. The induction lead wires 631, 632 may be supported by a pipe holder 187 (see FIG. 13) that surrounds the lower periphery of the body pipe 11. The pipe holder 187 (see FIG. 13) may separate the induction lead wires 631, 632 so as not to come into contact with the outside of the sensing coil 70.

[0104] Therefore, interference between the induction coil 60 and the sensing coil 70 can be prevented.

[0105] 14, the induction coil 60 may be disposed at a height corresponding to the heat generating part 52 of the heater 50. The vertical length L31 of the induction coil 60 may be greater than the vertical length L30 of the heat generating part 52. The heat generating part 52 may be located at a height between the upper and lower ends of the induction coil 60.

[0106] The inner coil 61 and the outer coil 62 may be wound in the same direction around the insertion space 14. The vertical lengths of the inner coil 61 and the outer coil 62 may be the same or similar to each other. For example, the vertical length of the inner coil 61 and the vertical length of the outer coil 62 may be L31. The inner coil 61 may be disposed at a height corresponding to the heat generating portion 52. The outer coil 62 may be disposed at a height corresponding to the heat generating portion 52. The number of turns of the outer coil 62 may be the same or similar to the number of turns of the inner coil 61. The number of turns per length of the outer coil 62 may be the same or similar to the number of turns per length of the inner coil 61.

[0107] The sensing coil 70 may be disposed below the induction coil 60. The vertical length L31 of the induction coil 60 may be greater than the vertical length L33 of the sensing coil 70. The sensing coil 70 may be disposed below the heat generating portion 52 at a different height from the heat generating portion 52.

[0108] Therefore, by increasing the number of turns of the induction coil 60 without increasing the vertical length of the induction coil 60, it is possible to increase the strength of the magnetic field that affects the heater 50. Also, the area where the induction coil 60 heats the heater 50 and the area where the sensing coil 70 senses can be separated into upper and lower areas. Also, it is possible to reduce sensing noise and improve sensing accuracy.

[0109] 15 , the vertical length L30 of the outer coil 62 may be smaller than the vertical length L31 of the inner coil 61. The vertical length L30 of the outer coil 62 may be the same as or similar to the vertical length L30 of the heat generating portion 52. The outer coil 62 may be disposed at a height between the upper and lower ends of the inner coil 61. The outer coil 62 may be disposed at a height corresponding to the heat generating portion 52. The number of turns of the outer coil 62 may be smaller than the number of turns of the inner coil 61. The number of turns per length of the outer coil 62 may be the same as or similar to the number of turns per length of the inner coil 61.

[0110] Because the induction coil 60 is double wrapped around the heater 50, the strength of the magnetic field in the desired location is increased while reducing the material required to fabricate the induction coil 60.

[0111] 16, the pitch P1 of the inner coil 61 and the pitch P2 of the outer coil 62 may be different from each other. For example, the pitch P2 of the outer coil 62 may be larger than the pitch P1 of the inner coil 61. The length L32 of the outer coil 62 in the up-down direction may be smaller than the length L31 of the inner coil 61 in the up-down direction. The number of turns of the outer coil 62 may be smaller than the number of turns of the inner coil 61. The number of turns per length of the outer coil 62 may be smaller than the number of turns per length of the inner coil 61.

[0112] Because the induction coil 60 is double wrapped around the heater 50, the magnetic field strength at the desired location can be increased and the amount of material required to fabricate the induction coil 60 can be relatively reduced.

[0113] 17 and 18, the sensing coil 70 may be disposed above the induction coil 60. The sensing coil 70 may be disposed above the heating portion 52 at a different height from the heating portion 52. When the extractor 30 supports the stick S, the sensing coil 70 may be disposed at a position higher than the lower wall 32 of the extractor 30. For example, the lower end of the heating portion 52 may be adjacent to the lower wall 32 of the extractor 30, and the sensing coil 70 may be disposed at a position higher than the lower wall 32 of the extractor 30 and the upper end of the heating portion 52.

[0114] The pair of sensing lead wires 73 can extend downward from both ends of the sensing coil 70 and pass outside the induction coil 60. Therefore, the sensing lead wires 73 can be prevented from being heated by the induction coil 60.

[0115] 1 to 18, an aerosol generating device according to one aspect of the present disclosure may include a body having an insertion space formed therein, a heater positioned within the insertion space, a sensing coil positioned around the insertion space, a capacitance sensor coupled to the sensing coil and measuring a capacitance near the sensing coil, an induction sensor coupled to the sensing coil and measuring an inductance near the sensing coil, and a switch electrically connecting the sensing coil to any one of the capacitance sensor and the induction sensor.

[0116] According to another aspect of the present disclosure, the aerosol generating device may further include an induction coil positioned around the insertion space to cause the heater to generate heat.

[0117] According to another aspect of the present disclosure, the sensing coil may be disposed below the induction coil and wound around a lower portion of the insertion space.

[0118] According to another aspect of the present disclosure, the aerosol generating device may further include a substrate to which the capacitance sensor and the induction sensor are coupled and positioned below the sensing coil, and an induction lead wire extending from the induction coil, coupled to the substrate, and passing outside the sensing coil.

[0119] According to another aspect of the present disclosure, the sensing coil may be disposed above the induction coil and wound around an upper portion of the insertion space.

[0120] According to another aspect of the present disclosure, the aerosol generating device may further include a substrate to which the capacitance sensor and the induction sensor are coupled and positioned below the induction coil, and a sensing lead wire extending from the sensing coil, coupled to the substrate, and passing outside the induction coil.

[0121] According to another aspect of the present disclosure, the induction coil may be disposed at a height corresponding to the heater, and the sensing coil may be disposed at a different height than the heater.

[0122] According to another aspect of the present disclosure, the aerosol generating device may further include a substrate to which the capacitance sensor and the induction sensor are coupled and which is positioned below the sensing coil, a pair of sensing lead wires extending from both ends of the sensing coil and coupled to the substrate, and a splitter positioned between the pair of sensing lead wires and separating the pair of sensing lead wires from each other.

[0123] According to another aspect of the present disclosure, the pair of sensing lead wires pass through splitter holes formed in the spaces between adjacent splitters among a plurality of splitters, and the aerosol generating device further includes a plurality of connectors coupled to the substrate, each of the plurality of connectors being positioned adjacent to a corresponding one of the splitter holes and coupled to one end of the pair of sensing lead wires.

[0124] According to another aspect of the present disclosure, the aerosol generating device may further include an induction lead wire extending from the induction coil and coupled to the substrate, a sensing lead wire extending from the sensing coil and coupled to the substrate, and a splitter separating the induction lead wire and the sensing lead wire from each other.

[0125] According to another aspect of the present disclosure, the splitter may be disposed below the induction coil and the sensing coil, and the substrate may be disposed below the splitter.

[0126] According to another aspect of the present disclosure, the aerosol generating device may further include a control unit that controls the operation of the switch, and the control unit may determine a state around the sensing coil based on the capacitance measured by the capacitance sensor when the switch electrically connects the sensing coil and the capacitance sensor, and may determine a state around the sensing coil based on the inductance measured by the induction sensor when the switch electrically connects the sensing coil and the induction sensor.

[0127] 1 to 18, an aerosol generating device according to one aspect of the present disclosure may include a body having an insertion space formed therein, a heater positioned within the insertion space, and an induction coil positioned around the insertion space and causing the heater to generate heat, and the induction coil may include an inner coil positioned around at least a portion of the insertion space, and an outer coil extending from the inner coil and positioned outside the inner coil around the inner coil and at least a portion of the insertion space.

[0128] According to another aspect of the present disclosure, the inner coil and the outer coil can be wound in the same direction.

[0129] According to another aspect of the present disclosure, the inner coil can be wound circumferentially along an upward direction around at least a portion of the insertion space, and the outer coil can extend from an upper end of the inner coil and be wound circumferentially along a downward direction around at least a portion of the insertion space.

[0130] According to another aspect of the present disclosure, the aerosol generating device may further include a substrate accommodated within the body below the induction coil and electrically connected to the induction coil, a first induction lead wire extending downward from a lower end of the inner coil and connected to the substrate, and a second induction lead wire extending downward from a lower end of the outer coil and connected to the substrate.

[0131] According to another aspect of the present disclosure, the height of the top end of the first guide lead wire and the height of the top end of the second guide lead wire may be substantially the same.

[0132] According to another aspect of the present disclosure, the aerosol generating device may further include a splitter disposed below the induction coil between the first induction lead wire and the second induction lead wire to separate the first induction lead wire and the second induction lead wire from each other.

[0133] According to another aspect of the present disclosure, the aerosol generating device further includes a plurality of splitters positioned such that splitter holes are formed between each other, and a plurality of connectors positioned on the substrate and adjacent to corresponding splitter holes among the plurality of splitter holes, and the first induction lead wire and the second induction lead wire may each pass through the plurality of splitter holes and be coupled to the plurality of connectors, respectively.

[0134] According to another aspect of the present disclosure, the second inductive lead wire may be disposed outside the inner coil.

[0135] According to another aspect of the present disclosure, the inner coil and the outer coil may be positioned at a height generally corresponding to the heater.

[0136] According to another aspect of the present disclosure, a vertical length of the inner coil and a vertical length of the outer coil may correspond to each other.

[0137] According to another aspect of the present disclosure, a vertical length of the outer coil may be smaller than a vertical length of the inner coil.

[0138] According to another aspect of the present disclosure, the pitch of the outer coil may be smaller than the pitch of the inner coil.

[0139] According to another aspect of the present disclosure, the number of turns of the outer coil may be smaller than the number of turns of the inner coil.

[0140] According to another aspect of the present disclosure, a radius of the outer coil may be greater than a radius of the inner coil.

[0141] According to another aspect of the present disclosure, the aerosol generating device may include a body having an insertion space formed therein, a heater located within the insertion space, and an induction coil located outside the insertion space and causing the heater to generate heat, the induction coil may include an inner coil located relative to a first portion of the insertion space, and an outer coil extending from the inner coil and located relative to a second portion of the insertion space, the first portion being different from the second portion, and a portion of the inner coil may be located between the outside of the insertion space and the outer coil.

[0142] The specific embodiments or other embodiments of the present disclosure described above are not mutually exclusive or distinct, and the configurations or functions of specific elements or all elements of the embodiments of the present disclosure described above can be combined with other elements or combined with each other.

[0143] For example, configuration A described in one embodiment of the present disclosure and drawings and configuration B described in another embodiment of the present disclosure and 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.

[0144] 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 body having an insertion space formed therein; A heater located within the insertion space; A sensing coil positioned around the insertion space; a capacitance sensor coupled to the sensing coil for measuring a capacitance around the sensing coil; an inductive sensor coupled to the sensing coil for measuring an inductance around the sensing coil; and a switch electrically connecting the sensing coil to one of the capacitance sensor and the induction sensor.

2. The aerosol generating device according to claim 1 , further comprising an induction coil positioned around the insertion space and causing the heater to generate heat.

3. The aerosol generating device according to claim 2 , wherein the sensing coil is disposed below the induction coil and wound around a lower portion of the insertion space.

4. a substrate to which the capacitance sensor and the inductive sensor are coupled and which is located below the sensing coil; The aerosol generating device of claim 3 , further comprising an inductive lead wire extending from the inductive coil, coupled to the substrate, and passing outside the sensing coil.

5. The aerosol generating device according to claim 2 , wherein the sensing coil is disposed above the induction coil and wound around an upper portion of the insertion space.

6. a substrate to which the capacitance sensor and the inductive sensor are coupled and which is disposed below the inductive coil; The aerosol generating device of claim 5 , further comprising: a sensing lead wire extending from the sensing coil, coupled to the substrate, and passing outside the induction coil.

7. The induction coil is disposed at a height corresponding to the heater; The aerosol generating device according to claim 4 or 6, wherein the sensing coil is positioned at a different height from the heater.

8. a substrate to which the capacitance sensor and the inductive sensor are coupled and disposed under the sensing coil; a pair of sensing lead wires extending from both ends of the sensing coil and coupled to the substrate; The aerosol generating device according to claim 1 , further comprising: a splitter disposed between the pair of sensing lead wires to separate the pair of sensing lead wires from each other.

9. The pair of sensing lead wires pass through splitter holes formed at intervals between adjacent splitters among the plurality of splitters, The aerosol generating device of claim 8, further comprising a plurality of connectors coupled to the substrate, each of the plurality of connectors being positioned adjacent to a corresponding one of the splitter holes and having one end of one of the pair of sensing lead wires coupled thereto.

10. an inductive lead wire extending from the inductive coil and coupled to the substrate; a sensing lead wire extending from the sensing coil and coupled to the substrate; The aerosol generating device of claim 2 , further comprising a splitter separating the induction lead wire and the sensing lead wire from each other.

11. the splitter is disposed below the induction coil and the sensing coil; The aerosol generating device according to claim 8 or 10, wherein the substrate is disposed below the splitter.

12. Further comprising a control unit for controlling the operation of the switch, The control unit is determining a state around the sensing coil based on a capacitance measured by the capacitance sensor when the switch electrically connects the sensing coil and the capacitance sensor; The aerosol generating device of claim 1 , wherein when the switch electrically connects the sensing coil and the induction sensor, a condition surrounding the sensing coil is determined based on the inductance measured by the induction sensor.

Images