Aerosol generating device

Abstract

To provide an aerosol generating device.SOLUTION: An aerosol generating device 100 includes: a pipe 20 shaped to include an insertion space; a heater having a cylindrical shape that surrounds the insertion space S; and an induction coil positioned relative to the heater and configured to cause the heater to generate heat through the flow of the current. The pipe extends along a longitudinal direction of a body 10 and includes an inflow passage that connects an insertion space with the outside of the pipe. A diameter of the inflow passage is smaller than a diameter of the heater. The inflow passage includes a first passage connected to the insertion space and a second passage that connects the first passage with the outside of the pipe. A diameter of the first passage is smaller than a diameter of the second passage.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] An aerosol generating device is used to extract a predetermined component from a medium or substance via an aerosol. The medium may contain a variety of components. The components contained in the medium may be flavorings of a variety of components. For example, the components contained in the medium may include nicotine, herbal, and / or coffee components. 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-mentioned problems and other problems.

[0004] Another object of the present disclosure is to provide an aerosol generating device that incorporates a new heating method.

[0005] It is yet another object of the present disclosure to provide an aerosol generating device having a structure that is easy to assemble.

[0006] Yet another object of the present disclosure is to provide an aerosol generating device having heat dissipation performance. [Means for solving the problem]

[0007] According to one aspect of the subject matter described in the present application, an aerosol generating device includes a pipe formed to include an insertion space, a heater having a cylindrical shape surrounding the insertion space, and an induction coil positioned relative to the heater and causing the heater to generate heat by the flow of current. [Effects of the Invention]

[0008] According to at least one of the embodiments of the present disclosure, an aerosol generating device incorporating a new heating method can be provided.

[0009] According to at least one of the embodiments of the present disclosure, it is possible to provide an aerosol generating device having a structure that is easy to assemble.

[0010] According to at least one of the embodiments of the present disclosure, an aerosol generating device having heat dissipation performance can be provided.

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

[0012] [Figure 1] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 2] FIG. 1 illustrates an example of an aerosol generating device according to an embodiment of the present disclosure. [Figure 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. [Figure 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. DETAILED DESCRIPTION OF THE INVENTION

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

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

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

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

[0017] When a component is said to be "connected" to another component, it will be understood that there may be other components in between, whereas when a component is said to be "directly connected" to another component, it will be understood that there are no other components in between.

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

[0019] 1, the aerosol generating device 100 may include a body 10. The aerosol generating device 100 may include a pipe 20. The aerosol generating device 100 may include at least one of a battery 11, a control unit 12, and a heater assembly 13. Referring to FIGS. 2 and 3, the aerosol generating device 100 may further include a cartridge 14.

[0020] The battery 11 and the control unit 12 may be disposed inside the body 10. The heater assembly 13 may be disposed in a pipe 20. The cartridge 14 may be detachably connected to the body 10. The pipe 20 may be connected to the inside of the body 10. The pipe 20 may be located at the top of the body 10.

[0021] Referring to Fig. 1, the battery 11, the control unit 12, and the heater assembly 13 may be arranged in a line. Referring to Fig. 2, the battery 11, the control unit 12, the heater assembly 13, and the cartridge 14 may be arranged in a line. Referring to Fig. 3, the cartridge 14 and the heater assembly 13 may be arranged in parallel to face each other. The internal structure of the aerosol generating device 100 is not limited to that shown in the drawings.

[0022] The pipe 20 may define an insertion space S. The insertion space S may be open at the top. The insertion space S may be formed in a shape corresponding to one side of the stick 400. The insertion space S may have a cylindrical shape extending in the vertical direction. One side of the stick 400 may be inserted into the insertion space S.

[0023] The heater assembly 13 may be disposed around the insertion space S. The heater assembly 13 may surround at least a portion of the insertion space S. The heater assembly 13 may surround one side of the stick 400 inserted into the insertion space S. The heater assembly 13 may heat the insertion space and / or the medium of the stick 400 inserted into the insertion space S to generate an aerosol.

[0024] The battery 11 can supply power to operate any one of the control unit 12, the heater assembly 13, and the cartridge 14. The battery 11 can supply power necessary to operate the display, sensor, motor, etc. installed in the aerosol generating device 100.

[0025] The control unit 12 can control the overall operation of the aerosol generating device 100. The control unit 12 can control the operation of at least one of the battery 11, the heater assembly 13, and the cartridge 14. The control unit 12 can control the operation of a display, a sensor, a motor, etc. installed in the aerosol generating device 100. The control unit 12 can check the status of each component of the aerosol generating device 100 and determine whether the aerosol generating device 100 is in an operable state.

[0026] The cartridge 14 can store a liquid. The cartridge 14 can generate an aerosol using the stored liquid. The aerosol generated in the cartridge 14 can be delivered to a user through the stick 400 inserted into the aerosol generating device 100.

[0027] The cartridge 14 may include a liquid chamber for storing a liquid and an atomization chamber through which air passes to generate an aerosol. The cartridge 14 may include a wick disposed within the atomization chamber and receiving the liquid from the liquid chamber. The cartridge 14 may include a heating coil for heating the wick to generate the aerosol. Air flowing into the inlet 141 (see FIG. 10) of the cartridge 14 passes through the liquid chamber, carrying the aerosol with it, and is then discharged to the outlet 142 (see FIG. 10) of the cartridge 14.

[0028] The aerosol generating device 100 may further include a capacitance sensor 15. The capacitance sensor 15 may include a metal foil 151 and a sensing circuit 152. The metal foil 151 and the sensing circuit 152 may be disposed at positions separated from each other.

[0029] The metal foil 151 may be disposed on the pipe 20. The metal foil 151 may face the insertion space S. The metal foil 151 may surround at least one side of the insertion space S. The metal foil 151 may be disposed below the heater 131. For example, the metal foil 151 may be made of SUS stainless steel.

[0030] The sensing circuit 152 may be located inside the body 100. The sensing circuit 152 may be configured by being printed or mounted on a substrate installed in the body. The sensing circuit 152 may be mounted on the substrate on which the control unit 12 is mounted or on a separate substrate. The sensing circuit 152 and the metal foil 151 may be electrically connected. The sensing circuit 152 is connected to the control unit 12 and can send and receive signals.

[0031] The capacitance sensor 15 may be based on one of the sensor technologies of self-capacitance and mutual capacitance. If the capacitance sensor 15 is of the self-capacitance type, the metal foil 151 may be formed as a single piece. If the capacitance sensor 151 is of the mutual capacitance type, the metal foils 151 may be formed as a pair spaced apart by a predetermined distance. In this case, one of the pair of metal foils 151 may be a transmitting electrode, and the other may be a receiving electrode.

[0032] When an object approaches the vicinity of the metal foil 151, or when an object around the metal foil 151 moves or changes state, the self-capacitance or mutual capacitance sensed by the sensing circuit 152 may change. Thus, the capacitance sensor 15 can sense various information about the stick 200 in the insertion space S, which will be described later.

[0033] The lower end of the stick 400 is inserted into the insertion space S, and the upper end thereof may be exposed to the outside from the insertion space S. A user can hold the exposed upper end of the stick 400 in their mouth and inhale air. The air, carrying the aerosol, passes through the inside of the aerosol generating device 100 and can be provided to the user.

[0034] 4, the stick 400 described above may include a medium portion 410. The stick 400 may include a cooling portion 420. The stick 400 may include a filter portion 430. The cooling portion 420 may be disposed between the medium portion 410 and the filter portion 430. The stick 400 may include a wrapper 440. The wrapper 440 may wrap the medium portion 410. The wrapper 440 may wrap the cooling portion 420. The wrapper 440 may wrap the filter portion 430. The stick 400 may have a cylindrical shape.

[0035] The medium portion 410 may include a medium 411. The medium portion 410 may include a first medium cover 413. The medium portion 410 may include a second medium cover 415. The medium 411 may be disposed between the first medium cover 413 and the second medium cover 415. The first medium cover 413 may be disposed at one end of the stick 400. The length of the medium portion 410 may be 24 mm.

[0036] The medium 411 may contain various substances. The substances contained in the medium may be flavoring substances. The medium 411 may be composed of a plurality of granules. Each of the granules may have a size of 0.4 mm to 1.12 mm. The medium 411 may be filled with the granules approximately 70% of the interior thereof. The length L2 of the medium 411 may be 10 mm. The first medium cover 413 may be composed of an acetate material. The second medium cover 415 may be composed of an acetate material. The first medium cover 413 may be composed of a paper material. The second medium cover 415 may be composed of a paper material. At least one of the first medium cover 413 and the second medium cover 415 may be composed of a paper material and may have a wrinkled shape, forming a plurality of gaps between them for air to flow. The gaps may be smaller than the size of each granule of the medium 411. The length L1 of the first medium cover 413 may be shorter than the length L2 of the medium 411. The length L3 of the second medium cover 413 may be shorter than the length L2 of the medium 411. The length L1 of the first medium cover 413 may be 7 mm. The length L2 of the second medium cover 413 may be 7 mm.

[0037] Therefore, each granule of the medium 411 cannot be separated from the medium portion 410 and the stick 400 .

[0038] The cooling portion 420 may have a cylindrical shape. The cooling portion 420 may have a hollow shape. The cooling portion 420 may be disposed between the medium portion 410 and the filter portion 430. The cooling portion 420 may be disposed between the second medium cover 415 and the filter portion 430. The cooling portion 420 may be formed in a tubular shape surrounding the cooling passage 424 therein. The cooling portion 420 may be thicker than the wrapper 440. The cooling portion 420 may be made of a paper material that is thicker than the wrapper 440. The length L4 of the cooling portion 420 may be the same as or approximately the same as the length L2 of the medium 411. The length L4 of the cooling portion 420 and the cooling passage 424 may be 10 mm. When the stick 400 is inserted into the aerosol generation device 100, at least a portion of the cooling portion 420 may be exposed to the outside of the aerosol generation device 100.

[0039] Therefore, the cooling unit 420 supports the medium unit 410 and the filter unit 430, thereby ensuring the rigidity of the stick 400. In addition, the cooling unit 420 supports the wrapper 440 between the medium unit 410 and the filter unit 430, thereby ensuring a location where the wrapper 440 is adhered. In addition, the heated air and aerosol can be cooled while passing through the cooling passage 424 inside the cooling unit 420.

[0040] The filter part 430 may be made of an acetate filter. The filter part 430 may be disposed at the other end of the stick 400. When the stick 400 is inserted into the aerosol generating device, the filter part 430 may be exposed to the outside of the aerosol generating device. A user may hold the filter part 430 in their mouth and inhale air. The length L5 of the filter part 430 may be 14 mm.

[0041] The wrapper 440 may wrap or surround the medium portion 410, the cooling portion 420, and the filter portion 430. The wrapper 440 may form the outer shape of the stick 400. The wrapper 440 may be made of a paper material. The adhesive portion 441 may be formed on one side edge of the wrapper 440. The wrapper 440 wraps the medium portion 410, the cooling portion 420, and the filter portion 430, and the adhesive portion 441 formed on one side edge and the other side edge may be adhered to each other. The wrapper 440 wrapping the medium portion 410, the cooling portion 420, and the filter portion 430 does not have to cover one end and the other end of the stick 400.

[0042] Therefore, the wrapper 440 can fix the medium portion 410 , the cooling portion 420 and the filter portion 430 and prevent them from coming off the stick 400 .

[0043] The first thin film 443 may be disposed at a position corresponding to the first medium cover 413. The first thin film 443 may be disposed between the wrapper 440 and the first medium cover 413, or may be disposed outside the wrapper 440. The first thin film 443 may surround the first medium cover 413. The first thin film 443 may be made of a metal material. The first thin film 443 may be made of an aluminum material. The first thin film 443 may be adhered to or coated on the wrapper 440.

[0044] The second thin film 445 may be disposed at a position corresponding to the second medium cover 415. The second thin film 445 may be disposed between the wrapper 440 and the second medium cover 415, or may be disposed outside the wrapper 440. The second thin film 445 may be made of a metal material. The second thin film 445 may be made of an aluminum material. The second thin film 445 may be adhered to or coated on the wrapper 440.

[0045] Therefore, it is possible to sense whether the capacitance sensor 15 is inserted inside the aerosol generating device.

[0046] 5 to 7, the pipe 20 can be installed in the body 10 (see FIGS. 1 to 3). The pipe 20 can form an insertion space S extending vertically inside.

[0047] The pipe 20 may include an outer pipe 21 and an inner pipe 22. The outer pipe 21 may form the outer shape of the pipe 20. The outer pipe 21 may surround an insertion space S. The outer pipe 21 may have a shape that extends vertically. The insertion space S may have a shape that extends vertically inside the outer pipe 21.

[0048] The insertion space S may include a first insertion space S1 and a second insertion space S2. The first insertion space S1 and the second insertion space S2 may be arranged one above the other. The first insertion space S1 may be located below the second insertion space S2. The first insertion space S1 may form a lower portion of the insertion space S. The first insertion space S1 and the second insertion space S2 may be connected to each other.

[0049] The cap 23 is open to form an insertion opening S3, which may be located above the second insertion space S2. The insertion opening S3 may communicate with the second insertion space S2. The insertion opening S3 may communicate with the outside of the pipe 20. The insertion opening S3 may form the upper end of the insertion space S. The outer pipe 21 may surround the first insertion space S1, the second insertion space S2, and the insertion opening S3.

[0050] The outer pipe 21 may form an inflow channel S4 communicating with the lower end of the insertion space S or the first insertion space S1. The inflow channel S4 may include a section extending downward from the lower end of the insertion space S or the first insertion space S1. The inflow channel S4 may communicate the outside of the pipe 20 with the insertion space S. For example, the inflow channel S4 may communicate the outlet 142 of the cartridge 14 with the insertion space S via the inflow port 217 (see FIG. 10). For example, air and / or aerosol discharged from the cartridge 14 may flow into the insertion space S through the inflow channel S4. The cartridge 14 and the inflow channel S4 may be omitted (removed), and the lower end of the insertion space S may be closed.

[0051] The inner pipe 22 may be disposed inside the outer pipe 21. The inner circumferential surface of the inner pipe 22 may have a cylindrical shape extending vertically. The second insertion space S2 may be formed at a position corresponding to the inner pipe 22. The inner pipe 22 may surround the second insertion space S2. The outer pipe 21 may surround the outer circumferential surface of the inner pipe 22. The outer pipe 21 may support the lower part of the inner pipe 22.

[0052] The metal foil 151 may be disposed below the inner pipe 22. The first insertion space S1 may be formed at a position corresponding to the metal foil 151. The metal foil 151 may surround the first insertion space S1. The cross section of the metal foil 151 may have a ring shape or a "C" shape. The outer pipe 21 may extend from above the inner pipe 22 to below the metal foil 151 to cover the inner pipe 22 and the metal foil 151.

[0053] The metal foil 151 may be coupled to the inner surface of the outer pipe 21 below the inner pipe 22. The metal foil 151 may be in contact with the first insertion space S1. Alternatively, a protective film may be covered on the surface of the metal foil 151 facing the first insertion space S1. The metal foil 151 may be disposed below the inner pipe 22 and the heater 131. The metal foil 151 may be disposed below the rib 225. The upper end of the metal foil 151 may be supported by the rib 225. The lower end of the metal foil 151 may be supported by a stopper 213 that supports the lower end of the stick 400. The stopper 213 may be provided below the metal foil 151 so as to protrude radially inward from the outer pipe 21.

[0054] The sidewall of the pipe 20 may extend along the longitudinal direction of the insertion space S. The lead hole 214 may be formed by opening the sidewall of the pipe 20. The lead hole 214 may be formed by opening the sidewall of the outer pipe 21. The lead hole 214 may be formed at a position corresponding to the metal foil 151. The metal foil 151 may include a portion disposed between the lead hole 214 and the first insertion space S1. The metal foil 151 may cover the lead hole 214.

[0055] The lead wire 153 may electrically connect the metal foil 151 and the sensing circuit 152 through the lead hole 214. The lead wire 153 may be soldered to the surface of the metal foil 151 exposed through the lead hole 214. The lead wire 153 may extend from the metal foil 151 to the sensing circuit 152 outside the pipe 20. The sensing circuit 152 may sense a change in capacitance of the metal foil 151 via the lead wire 153.

[0056] Therefore, the metal foil 151 and the sensing circuit 152 (see FIGS. 1 to 3) included in the capacitance sensor 15 may be arranged separately from each other. The metal foil 151 may be arranged inside the pipe 20, and the sensing circuit 152 may be arranged outside the pipe 20.

[0057] Alternatively, the metal foil 151 may be formed integrally with the outer pipe 21. Here, although the metal foil 151 is formed integrally with the outer pipe 21, a boundary may be formed that separates the metal foil 151 from the outer pipe 21. For example, the outer pipe 21 may be injection molded onto the metal foil 151. For example, the outer pipe 21 may be insert-injection molded onto the metal foil 151 by inserting the metal foil 151 into an injection mold having the shape of the outer pipe 21 and then solidifying the molten injection material in the injection mold.

[0058] In addition, the distance between the stick 400 and the metal foil 151 can be minimized to improve the sensing reliability of the capacitance sensor 15. In addition, the process of assembling the capacitance sensor 15 to the pipe 20 separately can be omitted, thereby simplifying the joining process.

[0059] The second insertion space S2 may be formed at a position corresponding to the heater assembly 13. The heater assembly 13 may surround the second insertion space S2. The inner pipe 22 may surround the periphery of the heater assembly 13. The inner pipe 22 may support the lower end of the heater assembly 13.

[0060] The heater assembly 13 may include a heater 131 and an induction coil 132. The heater 131 may be made of a resistive metal. The heater 131 may be an induction heater that generates heat by generating eddy currents due to a magnetic field generated by current flowing through the induction coil 132. Alternatively, the heater 131 may be a heater that generates heat by directly receiving current.

[0061] The heater 131 may have a cylindrical shape surrounding the second insertion space S2. The heater 131 may surround the outer periphery of the second insertion space S2. The heater 131 may be in contact with the second insertion space S2. The lower end of the heater 131 may be supported by the rib 225 of the inner pipe 22. The upper end of the heater 131 may be supported by the cap 23. The heater 131 may be made of metal such as SUS stainless steel. When the heater 131 generates heat, the heat may be conducted to the second insertion space S2.

[0062] The induction coil 132 may be disposed between the inner pipe 22 and the outer pipe 21. The induction coil 132 may be wound around the outer periphery of the inner pipe 22 and the heater 131. The induction coil 132 may be formed to a height corresponding to the heater 131. The induction coil 132 can cause the heater 131 to generate heat.

[0063] The inner pipe 22 may surround the heater 131. The inner pipe 22 may be disposed between the heater 131 and the induction coil 132. The inner pipe 22 may be disposed alongside the heater 131 and the induction coil 132. The inner pipe 22 may be formed to a height approximately corresponding to the heater 131 and the induction coil 132. Therefore, the inner pipe 22 may prevent the heater 131 and the induction coil 132 from coming into electrical contact with each other.

[0064] The ribs 225 of the inner pipe 22 may separate the metal foil 151 and the heater 131 from each other. The ribs 225 may protrude radially inward from a lower portion of the inner pipe 22. The ribs 225 may extend circumferentially along the periphery of the insertion space S. The heater 131 may be disposed above the ribs 225. The lower end of the heater 131 may be supported by the upper surface of the ribs 225. The metal foil 151 may be disposed below the ribs 225. The upper end of the metal foil 151 may be supported by the lower surface of the ribs 225. Thus, the inner pipe 22 can prevent the metal foil 151 and the heater 131 from coming into electrical contact with each other. This will be described further below.

[0065] An air gap 24 may be disposed between the heater 131 and the inner pipe 22. The air gap 24 may be covered by the heater 131 and the inner pipe 22. The air gap 24 may surround the heater 131. The air gap 24 may be formed between the heater 131 and the induction coil 132. The air gap 24 may dissipate heat generated by the heater 131.

[0066] Therefore, it is possible to prevent the heat generated by the heater 131 from being transferred to the outside of the pipe 20. It is also possible to prevent the heat generated by the heater 131 from damaging the structure of the pipe 20. It is also possible to reduce the heat generated by the heater 131 from heating the induction coil 132.

[0067] The cap 23 may be open in the vertical direction to form an insertion opening S3. The cap 23 may be disposed at the upper end of the pipe 20. The cap 23 may be disposed inside the outer pipe 21. The periphery of the cap 23 may be surrounded by the inner circumferential surface of the upper end of the outer pipe 21. The cap 23 may be coupled to the upper end of the outer pipe 21. The upper end of the cap 23 may face the upper side of the pipe 20. The lower end of the cap 23 may cover and support the upper end of the inner pipe 22. The lower end of the cap 23 may cover and support the upper end of the heater 131.

[0068] 7 and 8, the stick 400 may be inserted into the insertion space S. The stick 400 may be inserted sequentially into the insertion opening S3, the second insertion space S2, and the first insertion space S1. The lower end of the stick 400 or the first medium cover 413 of the stick 400 may be located at a position corresponding to the first insertion space S1. The lower end of the stick 400 may be supported by a stopper 213 formed at the lower end of the insertion space S. The medium 411 of the stick 400 may be located at a position corresponding to the second insertion space S2. Air and / or aerosol may flow into the inside of the pipe 20 through the inlet channel S4 and flow into the stick inserted into the insertion space S.

[0069] The sensing circuit 152 connected to the metal foil 151 senses the change in capacitance, so that the capacitance sensor 15 can sense various information about the insertion space S.

[0070] The capacitance sensed by the sensing circuit 152 may change depending on whether the stick 400 is inserted into the insertion space S. Therefore, the capacitance sensor 15 can sense whether the stick 400 is inserted into the insertion space S.

[0071] In the case of the stick 400 inserted into the insertion space S, the amount of moisture at the bottom of the stick 400 or the first medium cover 413 may change depending on the degree of use, and therefore the capacitance sensed by the sensing circuit 152 may change. Therefore, the capacitance sensor 15 can sense the degree to which the stick 400 has been used or whether the stick 400 is to be reused.

[0072] The function of the capacitance sensor 15 is not limited to the above, and any capacitance sensor 15 that can determine the surrounding conditions through factors that cause changes in capacitance can be used. To this end, a lookup table indicating the capacitance values ​​sensed by the capacitance sensor 15 and the corresponding changes in the surrounding environment can be stored in memory.

[0073] 9, the outer pipe 21 may include a first outer pipe body 211 and a second outer pipe body 212. The first outer pipe body 211 may be located above the second outer pipe body 212. The first outer pipe body 211 may extend upward from the upper end of the second outer pipe body 212. The second insertion space S2 and the insertion opening S3 may be formed at positions corresponding to the first outer pipe body 211. The inner circumferential surface of the first outer pipe body 211 may be formed in a cylindrical shape. The first outer pipe body 211 may surround the inner pipe 22. The insertion opening S3 and the inlet passage S4 may be formed at positions corresponding to the second outer pipe body 212. The second outer pipe body 212 may support a lower portion of the inner pipe 22.

[0074] The inner pipe 22 may include an inner pipe body 221. The inner pipe body 221 may extend vertically or vertically and have a cylindrical shape. The inner pipe body 221 may be formed alongside the first outer pipe body 211. The inner pipe body 221 may be spaced radially inward from the first outer pipe body 211 to form a gap in which the induction coil 132 is disposed. The inner pipe body 221 may surround the second insertion space S2 and the heater 131.

[0075] The inner pipe 22 may include a first inner pipe bending portion 222. The first inner pipe bending portion 222 may be formed at a lower end of the inner pipe 22. The first inner pipe bending portion 222 may be bent radially outward from the lower end of the inner pipe body 221. The first inner pipe bending portion 222 may extend circumferentially along the circumference of the inner pipe 22. The first inner pipe bending portion 222 may have a ring shape. The first inner pipe bending portion 222 may support the lower end of the induction coil 132. The first inner pipe bending portion 222 may be in contact with the inner circumferential surface of the lower portion of the first outer pipe body 211 and supported laterally. The first inner pipe bending portion 222 may be supported by the upper end of the second outer pipe body 212.

[0076] The inner pipe 22 may include a second inner pipe bending portion 223. The second inner pipe bending portion 223 may be formed at an upper end of the inner pipe 22. The second inner pipe bending portion 223 may be bent radially outward from the upper end of the inner pipe body 22. The second inner pipe bending portion 223 may extend circumferentially along the circumference of the inner pipe 22. The second inner pipe bending portion 223 may be inclined upward in the radially outward direction. The second inner pipe bending portion 223 may be located above the induction coil 132. The second inner pipe bending portion 223 may cover the induction coil 132. The second inner pipe bending portion 223 may be supported by the cap 23. The second inner pipe bending portion 223 may be supported laterally by contacting the inner circumferential surface of the upper portion of the first outer pipe body 211.

[0077] The inner pipe 22 may include a rib 225. The rib 225 may be formed on a lower portion of the inner pipe 22. The rib 225 may protrude radially inward from an inner peripheral surface of the lower portion of the inner pipe body 221. The rib 225 may extend in a circumferential direction along the periphery of the insertion space S. The rib 225 may have a ring shape.

[0078] The ribs 225 may be disposed between the heater 131 and the metal foil 151. The ribs 225 may separate the heater 131 and the metal foil 151 from each other. The ribs 225 may be disposed below the heater 131. The ribs 225 may support the lower end of the heater 131. The ribs 225 may be supported by the upper end of the first outer pipe body 212. The ribs 225 may be disposed above the metal foil 151. The ribs 225 may cover and support the upper end of the metal foil 151. The metal foil 151 may be integrally formed on the inner surface of the inner pipe body 212. The metal foil 151 may be disposed below the heater 131 so as to be aligned with the heater 131. The first inner pipe bending portion 222 may support the lower end of the induction coil 132.

[0079] Therefore, the heater assembly 13 and the metal foil 151 are separated from each other, preventing contact therebetween.

[0080] The inner pipe 22 may include an insertion portion 226. The insertion portion 226 may be formed at a lower end of the inner pipe 22. The insertion portion 226 may protrude downward from the first inner pipe bending portion 222. The insertion portion 226 may be inserted into and supported by an insertion groove 216 formed at an upper end of the second outer pipe body 212.

[0081] The heater 131 may include a heater body 1311. The heater body 1311 may have a cylindrical shape extending vertically. The inner circumferential surface of the heater body 1311 may surround the periphery of the second insertion space S2. The outer circumferential surface of the heater body 1311 may be surrounded by an air gap 24. The heater body 1311 may be spaced radially inward from the inner circumferential surface of the inner pipe body 221 to form the air gap 24.

[0082] The heater 131 may include a first heater bending portion 1312. The first heater bending portion 1312 may be formed at a lower end of the heater 131. The first heater bending portion 1312 may be bent radially outward from the lower end of the heater body 1311. The first heater bending portion 1312 may be inclined downward along the radially outward direction. The first heater bending portion 1312 may be supported by the ribs 225. The first heater bending portion 1312 and the ribs 225 may overlap in the vertical direction.

[0083] The heater 131 may include a second heater bending portion 1313. The second heater bending portion 1313 may be formed at an upper end of the heater 131. The second heater bending portion 1313 may be bent radially outward from the upper end of the heater body 1311. The second heater bending portion 1313 may be inclined upward along the radially outward direction. The second heater bending portion 1313 may be supported by the cap 23. The cap 131 and the second heater bending portion 1313 may overlap in the vertical direction.

[0084] The induction coil 132 may be formed between the inner pipe body 221, the first inner pipe bending portion 222, the second inner pipe bending portion 223, and the first outer pipe body 211. The induction coil 132 may be wound around the inner pipe body 221. A lower end of the induction coil 132 may be supported by the first inner pipe bending portion 222. The induction coil 132 may be covered by the second inner pipe bending portion 223. The first outer pipe body 211 may surround the induction coil 132. The induction coil 132 may be disposed at a position corresponding to the heater 131. The induction coil 132 generates an eddy current in the heater 131 by an induced magnetic field, causing the heater 131 to generate heat.

[0085] The air gap 24 may be formed among the heater body 1311, the first heater bending portion 1312, the second heater bending portion 1313, and the inner circumferential surface of the inner pipe body 221. The air gap 24 may surround the outer circumferential surface of the heater 131. The air gap 24 is formed as an air layer and can dissipate heat generated from the heater 131.

[0086] Therefore, it is possible to prevent the heat generated from the heater 131 from being transferred to the outside of the pipe 20. In addition, it is possible to prevent the heat generated from the heater 131 from damaging the structure of the pipe 20.

[0087] The cap 23 may be surrounded by the inner circumferential surface of the upper end of the first outer pipe body 211. The cap 23 may be disposed above the heater assembly 13 and the inner pipe 22. The inner circumferential surface of the cap 23 may surround the periphery of the insertion opening S3. The cap 23 may be coupled to the upper end of the first outer pipe body 211. The cap 23 may be fixed to the first outer pipe body 211 to support the upper end of the inner pipe 22 or the second inner pipe bending portion 223. The cap 23 may be fixed to the first outer pipe body 211 to support the upper end of the heater 131 or the second inner pipe bending portion 1313. The cap 23 fixes the positions of the heater 131, the induction coil 132, and the inner pipe 22, thereby preventing the heater 131, the induction coil 132, and the inner pipe 22 from coming off the pipe 20.

[0088] The couplers 215, 235 may couple the cap 23 and the outer pipe 21. The couplers 215, 235 may be formed on the outer peripheral surface of the cap 23 and the upper end of the first outer pipe body 211. The couplers 215, 235 may include a coupling protrusion 235 and a coupling groove 215. For example, the coupling protrusion 235 may protrude from the outer peripheral surface of the cap 23. The coupling groove 215 may be formed by opening the upper end surface of the first outer pipe body 211. The coupling protrusion 235 and the coupling groove 215 may be coupled to each other by a snap-fit ​​method.

[0089] The aerosol generating device 100 according to an embodiment of the present invention can be manufactured by the following method. First, the metal foil 151 and the outer pipe 21 can be joined together. Here, the metal foil 151 can be integrally formed with the outer pipe 21 by a method such as injection molding. Then, the inner pipe 22 surrounded by the induction coil 132 can be inserted into the outer pipe 21. Then, the heater 131 can be inserted into the inner pipe 22. The heater 131 and the inner pipe 22 can be inserted into the outer pipe 21 together. Then, the cap 23 can be joined to the outer pipe 21, thereby fixing the inner pipe 22, heater 131, and induction coil 132.

[0090] Therefore, the structure of the pipe 20 can be stably joined without the need for a separate bonding operation.

[0091] Referring to FIG. 10 , a cartridge 14 may be detachably coupled to one side of a body 10. The cartridge 14 may be arranged alongside a pipe 20. The cartridge 14 may be arranged in parallel with the pipe 20. The body 10 may include a partition 102. The partition 102 may be formed between the pipe 20 and the cartridge 14. The partition 102 may extend alongside the pipe 20. The partition 102 may extend in the vertical direction. One surface of the partition 102 may support one side of the pipe 20. The cartridge 14 may be coupled to the body 10 so as to face the other surface of the partition 102. The cartridge 14 may be coupled to the partition 102. The other surface of the partition 102 may support one side of the cartridge 14. The partition 102 may separate the pipe 20 and the cartridge 14 from each other.

[0092] The cartridge 14 may have an inlet 141 and an outlet 142. The inlet 141 may be formed on one side of the upper end of the cartridge 14. The inlet 141 may open upward. The outlet 142 may be formed on one side of the lower end of the cartridge 14. The outlet 142 may open toward the pipe 20. The inlet 141 and the outlet 142 may communicate with each other through a cartridge flow path 143 inside the cartridge 14. When the cartridge 14 is coupled to the body 10, the outlet 142 and the inlet flow path S4 may communicate with each other. Air passing through the cartridge 14 may be discharged to the outlet 142 together with the aerosol inside the cartridge 14. Therefore, when a user holds the stick 400 inserted into the insertion space S between their mouths and inhales, the air flows from the outside of the cartridge 14 into the cartridge 14 through the inlet 141, and then flows sequentially through the cartridge flow path 143, the outlet 142, and the inlet flow path S4, and passes through the stick 400 inserted into the insertion space S.

[0093] The cover 103 is coupled to the upper end of the body 10 and can cover the upper end of the pipe 20 or the cap 23. The cover 103 can support the pipe 20. The cover 103 can prevent the pipe 20 from being separated from the body 10. The cover 103 can form an opening corresponding to the insertion space S.

[0094] The body 10 may include an extension 105. The extension 105 may extend laterally from the upper end of the partition 102 to cover the upper end of the cartridge 14. The extension 105 may cover the inlet 141. The extension 105 may prevent external foreign matter from entering the inlet 141. The extension 105 may be spaced a predetermined distance upward from the inlet 141 to form a gap through which air can enter the inlet 141.

[0095] The aerosol generating device 100 may include a first sensor 106. The first sensor 106 may be disposed inside the first sensor extension 105. The first sensor 106 may face the cartridge 14. The first sensor 106 may sense whether the cartridge 14 is attached to the body 10. For example, the first sensor 106 may be a proximity sensor. The first sensor 106 may be connected to the control unit 12 (see FIGS. 1 to 3). The first sensor 106 may transmit a signal to the control unit 12, and the control unit 12 may determine whether the cartridge 14 is attached to the body 10 based on the signal received from the first sensor 106. If the cartridge 14 is not attached to the body 10, the control unit 12 may control the aerosol generating device 100 not to operate. For example, if the cartridge 14 is not attached to the body 10, the control unit 12 may control the induction coil 132 so that no current flows therethrough.

[0096] The aerosol generating device 100 may include a second sensor 107. The second sensor 107 may be disposed adjacent to the inlet 141. The second sensor 107 may face the inlet 141. The second sensor 107 may sense the flow of surrounding air. For example, the second sensor 107 may be an air flow sensor or a pressure sensor. The second sensor 107 may sense air flowing from the outside to the inlet 141. The second sensor 107 may be connected to the control unit 12 (see FIGS. 1 to 3). The second sensor 107 may transmit a signal to the control unit 12, and the control unit 12 may determine whether air is flowing into the inlet 141 based on the signal received from the second sensor 107. When air is flowing into the inlet 141, the control unit 12 may control the induction coil 132 to pass a current and cause the heater 131 to generate heat. When air flows into the inlet 141, the control unit 12 can also cause the heater inside the cartridge 14 to generate heat, thereby generating an aerosol inside the cartridge 14.

[0097] 1 to 10, an aerosol generating device according to one aspect of the present disclosure may include a pipe formed to include an insertion space, a cylindrical heater surrounding the insertion space, and an induction coil positioned relative to the heater and causing the heater to generate heat by a flow of current.

[0098] According to another aspect of the present disclosure, the pipe may include an inner pipe disposed between the heater and the induction coil and positioned to surround the outside of the heater, and an outer pipe positioned to surround the inner pipe and the induction coil.

[0099] According to another aspect of the present disclosure, the inner pipe may include an inner pipe body extending relative to the inner surface of the outer pipe and surrounded on the inside by the induction coil, a first inner pipe bending portion bent radially outward from the lower end of the inner pipe body, contacting the inner surface of the outer pipe and supporting the lower end of the induction coil, and a second inner pipe bending portion bent radially outward from the upper end of the inner pipe body, contacting the inner surface of the outer pipe and covering the upper end of the induction coil.

[0100] According to another aspect of the present disclosure, the outer pipe can support a lower end of the inner pipe.

[0101] According to another aspect of the present disclosure, the inner pipe may include a rib that protrudes radially inward from a lower portion thereof to support a lower end of the heater.

[0102] According to another aspect of the present disclosure, the aerosol generating device may further include a cap coupled to the outer pipe so as to contact an upper end of the heater and configured to define an insertion opening communicating with the insertion space.

[0103] According to another aspect of the present disclosure, the cap may be coupled to an upper end of the inner pipe.

[0104] According to another aspect of the present disclosure, the aerosol generating device may further include a coupler connecting the cap and the outer pipe.

[0105] According to another aspect of the present disclosure, the coupler may include a coupling protrusion protruding from an outer peripheral surface of the cap, and a coupling groove formed by an opening in an upper peripheral wall of the outer pipe, into which the coupling protrusion is inserted to couple the cap and the outer pipe to each other.

[0106] According to another aspect of the present disclosure, the heater may be positioned relative to the inner pipe to form an air gap between the heater and the inner pipe.

[0107] According to another aspect of the present disclosure, the heater includes a cylindrical heater body extending relative to the inner pipe, a first heater bending portion bent radially outward from a lower end of the heater body and in contact with a lower inner surface of the inner pipe, and a second heater bending portion bent radially outward from an upper end of the heater body and in contact with an upper inner surface of the inner pipe, and the air gap may be an area defined by the heater body, the first heater bending portion, the second heater bending portion, and the inner surface of the inner pipe.

[0108] According to another aspect of the present disclosure, an aerosol generating device according to one aspect of the present disclosure may include a heater having an elongated shape that defines an insertion space, an inner pipe positioned on the outside of the heater, an induction coil positioned in close proximity to the heater and relative to the inner pipe and that heats the heater by the flow of current, and an outer pipe formed to surround the inner pipe and the induction coil.

[0109] According to another aspect of the present disclosure, the inner pipe may include an inner pipe body that extends relative to a portion of the inner surface of the outer pipe and has an outer portion surrounded by the induction coil; a first inner pipe bending portion that is bent radially outward from the lower end of the inner pipe body and contacts a portion of the inner surface of the outer pipe to support the lower end of the induction coil; and a second inner pipe bending portion that is bent radially outward from the upper end of the inner pipe body and contacts a portion of the inner surface of the outer pipe to cover the upper end of the induction coil.

[0110] According to another aspect of the present disclosure, the heater is positioned relative to the inner pipe to form an air gap between the outside of the heater and the inside of the inner pipe, and the heater may include a cylindrical heater body extending relative to the inner pipe, a first heater bending portion bent radially outward from a lower end of the heater body and in contact with a portion of a lower inner surface of the inner pipe, the first heater bending portion in contact with the lower inner surface, and a second heater bending portion bent radially outward from an upper end of the heater body and in contact with a portion of an upper inner surface of the inner pipe.

[0111] The specific embodiments or other embodiments of the present disclosure described above are not mutually exclusive or distinct, and the structure or function of any or all elements of the embodiments of the present disclosure described above can be combined with other elements or combined with each other.

[0112] 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.

[0113] While the embodiments have been described above in accordance with 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 particularly, 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 uses will also be apparent to those skilled in the art.

Claims

1. A long, elongated body, a pipe disposed inside the body and forming an insertion space; a heater having a cylindrical shape surrounding the insertion space and providing heat to the insertion space; The heater is a cylindrical heater body extending alongside the pipe; a first heater bending portion bent in a radial direction from one end of the heater body and supported by the pipe; a second heater bending portion bent in a radial direction from the other end of the heater body and supported by the pipe, An air gap is formed between the heater body and the pipe, The pipe is an inlet passage extending along a longitudinal direction of the body and communicating the insertion space with the outside of the pipe, the diameter of the inlet passage being smaller than the diameter of the heater; The inlet flow path is a first flow path connected to the insertion space; a second flow path connecting the first flow path and the outside of the pipe; An aerosol generating device, wherein the diameter of the first flow path is smaller than the diameter of the second flow path.

2. a third passage connecting the second passage to the outside of the body, The aerosol generating device according to claim 1 , wherein the diameter of the third flow path is smaller than the diameter of the second flow path.

3. The aerosol generating device according to claim 2 , wherein the third flow path directly connects the outside of the body to the pipe.

4. a first wire wound adjacent to an outer circumferential surface of the heater; a battery built into the body and providing current to the first wire; The aerosol generating device according to claim 1 , further comprising: a control unit that adjusts the current provided from the battery to the first wire.

5. The aerosol generating device according to claim 1 , further comprising a sensing circuit positioned adjacent to the first heater bending portion, surrounding the insertion space, and including a sensor electrically connected to the second wire.

6. a cap that connects the insertion space to the outside of the body and forms an insertion opening that is connected to one end of the pipe; the cap is cylindrical; The aerosol generating device according to claim 1 , wherein the inner diameter of the cap corresponds to the inner diameter of the heater.

7. The aerosol generating device according to claim 6 , wherein the inner diameter of the cap is the same as the inner diameter of the heater, and the inner circumferential surface of the cap and the inner circumferential surface of the heater are aligned side by side.

8. The aerosol generating device according to claim 7 , wherein an outer diameter of the first heater bending portion is larger than an inner diameter of the cap.

9. The aerosol generating device according to claim 8 , wherein an outer diameter of the second heater bending portion corresponds to an outer diameter of the first heater bending portion.

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