CN116322397A

CN116322397A - Aerosol generating device

Info

Publication number: CN116322397A
Application number: CN202280006845.4A
Authority: CN
Inventors: 安挥庆
Original assignee: KT&G Corp
Current assignee: KT&G Corp
Priority date: 2021-06-23
Filing date: 2022-06-22
Publication date: 2023-06-23
Also published as: WO2022270916A1; EP4358760A1; KR20220170418A; US20240023612A1; KR102573818B1; CA3191216A1; JP2023541067A

Abstract

An aerosol-generating device is disclosed. The aerosol-generating device of the present disclosure comprises: a housing including an inner wall defining an insertion space therein and an outer wall surrounding an outer side of the inner wall to define a coil receiving space formed between the inner wall and the outer wall, wherein each of the insertion space and the coil receiving space has an opening at one side; a heating coil wound on an outer side of the inner wall and disposed in the coil receiving space; and a cover configured to cover the opening of the coil receiving space and including an insertion port allowing communication between the insertion space and an outside of the housing, wherein the cover includes a sealing protrusion positioned between the opening of the insertion space and the opening of the coil receiving space to press against the inner wall.

Description

Aerosol generating device

Technical Field

The present disclosure relates to an aerosol-generating device.

Background

An aerosol-generating device is a device that extracts certain components from a medium or substance by forming an aerosol. The medium may comprise a multicomponent material. The substance contained in the medium may be a multi-component flavouring substance. For example, the substance contained in the medium may include a nicotine component, a traditional Chinese medicine component, and/or a coffee component. Recently, various studies have been made on aerosol-generating devices.

Disclosure of Invention

Technical problem

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

Another object of the present disclosure is to provide an aerosol-generating device capable of preventing air or external contaminants from entering a space in which a heating coil is disposed.

Another object of the present disclosure is to provide an aerosol-generating device capable of stably and simply coupling a structure configured to cover a space provided with a heating coil.

It is another object of the present disclosure to provide an aerosol-generating device comprising a structure configured to stably support a rod inserted into the aerosol-generating device.

It is another object of the present disclosure to provide an aerosol-generating device in which the flow path of the air flow to the rod and the efficiency of the air flow are improved.

Technical proposal

According to an aspect of the present disclosure, in order to achieve the above object, there is provided an aerosol-generating device comprising: a housing including an inner wall defining an insertion space therein and an outer wall surrounding an outer side of the inner wall to define a coil receiving space formed between the inner wall and the outer wall, wherein each of the insertion space and the coil receiving space has an opening at one side; a heating coil wound on an outer side of the inner wall and disposed in the coil receiving space; and a cover configured to cover the opening of the coil receiving space and including an insertion port allowing communication between the insertion space and an outside of the housing, wherein the cover includes a sealing protrusion between the opening of the insertion space and the opening of the coil receiving space to press against the inner wall.

Advantageous effects

According to at least one embodiment of the present disclosure, an aerosol-generating device capable of preventing air or external contaminants from entering a space in which a heating coil is provided may be provided.

According to at least one embodiment of the present disclosure, an aerosol-generating device capable of stably and simply coupling a structure configured to cover a space provided with a heating coil may be provided.

According to at least one embodiment of the present disclosure, an aerosol-generating device may be provided that includes a structure configured to stably support a rod inserted into the aerosol-generating device.

According to at least one embodiment of the present disclosure, an aerosol-generating device may be provided in which the flow path of the air flow to the rod and the efficiency of the air flow are improved.

Additional applications of the present disclosure will become apparent from the detailed description that follows. However, since various changes and modifications within the spirit and scope of the disclosure will become apparent to those skilled in the art, it should be understood that the detailed description and specific embodiments (e.g., preferred embodiments of the disclosure) are given by way of example only.

Drawings

The above and other objects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 to 17 are diagrams illustrating examples of an aerosol-generating device according to an embodiment of the present disclosure.

Detailed Description

Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, and the same or similar elements are denoted by the same reference numerals even though they are depicted in different drawings, and redundant description thereof will be omitted.

In the following description, with respect to constituent elements used in the following description, the suffixes "module" and "unit" are used only in view of descriptive convenience without mutually distinguishing meanings or functions.

In addition, in the following description of the embodiments disclosed in the present specification, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the embodiments disclosed in the present specification unclear. In addition, the drawings are provided only for better understanding of the embodiments disclosed in the present specification and are not intended to limit the technical ideas disclosed in the present specification. Accordingly, the drawings should be understood to include all modifications, equivalents, and alternatives falling within the scope and spirit of the present disclosure.

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

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

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

Referring to fig. 1, an aerosol-generating device 100 according to the present disclosure may comprise at least one of a battery 11, a controller 12, a sensor 13, a cartridge 14, or a heating coil 15. At least one of the battery 11, the controller 12, the sensor 13, the cartridge 14 or the heating coil 15 may be provided in the aerosol-generating device 100.

The heating coil 15 may heat the rod 200 inserted into the aerosol-generating device 100. The heating coil 15 may be disposed to surround an insertion space 24 (see fig. 3) into which the rod 200 is inserted. The heating coil 15 may receive power from the battery 11 to generate heat. Alternatively, the heating coil 15 may heat the susceptor provided in the insertion space 24 (see fig. 3) by inducing a magnetic field in the susceptor. The susceptor may extend in the longitudinal direction of the rod 200 and may be disposed in the rod 200. When the rod 200 is inserted into the insertion space 24 (see fig. 3), the susceptor provided in the rod 200 is inserted into the insertion space 24 and thus may be surrounded by the heating coil 15.

The cartridge 14 may be interchangeably disposed in the aerosol-generating device 100. The cartridge 14 may store a liquid therein. The cartridge 14 may heat the liquid stored therein to generate an aerosol. The cartridge 14 may supply the aerosol generated in the cartridge 14 to the rod 200 inserted into the insertion space 24.

The battery 11 may supply the power required to drive the components of the aerosol-generating device 100. The battery 11 may supply power to at least one of the controller 12, the sensor 13, or the heating coil 15. The battery 11 may supply power required to drive a display, motor, etc. mounted on the aerosol-generating device 100.

The controller 12 may control the overall operation of the aerosol-generating device 100. The controller 12 may control the operation of at least one of the battery 11, the heating coil 15, the cartridge 14, or the sensor 13. The controller 12 may check the status of the components of the aerosol-generating device 100 in order to determine whether the aerosol-generating device 100 is operational.

The sensor 13 may sense the temperature of the heating coil 15. The sensor 13 may be installed adjacent to the heating coil 15. The controller 12 may control the temperature of the heating coil 15 based on the temperature of the heating coil 15 sensed by the sensor 13. The controller 12 may transmit information about the temperature of the heating coil 15 to a user through a user interface based on the temperature of the heating coil 15 sensed by the sensor 13.

Referring to fig. 2 and 3, the housing may include a lower housing 10 and an upper housing 20. The upper case 20 may be disposed on the lower case 10. At least one of the battery 11, the controller 12, the sensor, or the cartridge 14 may be disposed in the lower housing 10 (see fig. 1). The heating coil 15 may be disposed in the upper case 20. The upper housing 20 may also be referred to simply as housing 20.

The housing 20 may include an outer wall 21 and an inner wall 22. The inner wall 22 may define an insertion space 24, the insertion space 24 being open at an upper side thereof. The insertion space 24 and the inner wall 22 may be formed in a cylindrical shape. The rod 200 may be inserted into the insertion space 24. The upper portion of the wand 200 may be exposed to the exterior of the aerosol-generating device 100. When the rod 200 is inserted into the insertion space 24, the inner wall 22 may surround the lower portion of the rod 200.

The outer wall 21 of the housing 20 may surround the exterior of the inner wall 22. The outer wall 21 may be spaced radially outwardly from the inner wall 22. The outer wall 21 may be formed in a cylindrical shape. The outer wall 21 may define a coil receiving space 25, the coil receiving space 25 being formed between the outer wall 21 and the inner wall 22 and being open at an upper side thereof. The coil receiving space 25 may be formed between the outer wall 21 and the inner wall 22, and may extend circumferentially. The outer wall 21 may surround an outer circumferential surface of the coil receiving space 25. The inner wall 22 may surround an inner circumferential surface of the coil receiving space 25.

The heating coil 15 may be inserted into the coil receiving space 25 and may be disposed therein. The heating coil 15 may be disposed to surround the insertion space 24. The heating coil 15 may receive power from the battery 11 to generate heat. Alternatively, the heating coil 15 may be disposed in the insertion space 24. The heating coil 15 may generate heat using a magnetic field generated by an induction coil disposed near the heating coil 15. The heating coil 15 may heat the rod 200 inserted into the insertion space 24.

The cover 30 may be disposed on the housing 20. The cover 30 may be coupled or fastened to the housing 20. The cover 30 may cover an upper portion of the case 20. The cover 30 may cover the open upper side of the coil receiving space 25. The insertion port 34 may be formed by opening the cover 30. The insertion port 34 may have a circular shape. The insertion port 34 may be provided above the insertion space 24 to communicate with the insertion space 24. The outer peripheral surface of the insertion port 34 may be disposed parallel to the outer peripheral surface of the insertion space 24, or may have a shape corresponding to the outer peripheral surface of the insertion space 24.

Referring to fig. 4 to 6, the housing 20 may include screw guides 214 and 215. Screw guides 214 and 215 may be positioned around insertion space 24 and may extend obliquely and circumferentially downward. The screw guides 214 and 215 may be formed by recessing the inner peripheral surface of the upper portion of the outer wall 21 radially outward. The screw guides 214 and 215 may face the coil receiving space 25 or may communicate therewith. The screw guides 214 and 215 may be one of a plurality of screw guides arranged circumferentially. For example, the

helical guides

214 and 215 may include three helical guides circumferentially spaced apart from one another.

Screw guides 214 and 215 may include guide inlets 214. The helical guides 214 and 215 may include a guide channel 215. The guide inlet 214 may be open at an upper end of the housing 20. The guide inlet 214 may be formed by recessing the inner peripheral surface of the upper end of the outer wall 21 radially outward. The guide inlet 214 may be formed by opening the upper end of the outer wall 21. The guide inlet 214 may face the coil receiving space 25 or may communicate therewith. The guide inlet 214 may be in communication with one end of the guide channel 215. The guide inlet 214 may be one of a plurality of guide inlets circumferentially spaced apart from each other.

The guide passage 215 may be formed by recessing the inner peripheral surface of the upper end of the outer wall 21 radially outward. The guide channel 215 may extend obliquely downward circumferentially from the guide inlet 214. The guide channel 215 may be formed in a spiral shape. The guide channel 215 may be in communication with the guide inlet 214. The guide passage 215 may communicate with the coil receiving space 25. The guide inlet 214 may be one of a plurality of guide inlets circumferentially spaced apart from each other.

The cover 30 may include a first cover portion 31 and a second cover portion 32. The second cover part 32 may be formed under the first cover part 31. The inner peripheral surfaces of the first cover portion 31 and the second cover portion 32 may be integrally formed, and may constitute an inner peripheral surface 33 of the cover 30 surrounding the side portion of the insertion port 34. The outer circumferential surface of the second cover part 32 may be recessed radially inward from the outer circumferential surface of the first cover part 31.

The cover 30 may include a guide protrusion 325. The guide protrusions 325 may protrude to be inserted into the screw guides 214 and 215. The guide protrusion 325 may protrude from the outer circumferential surface of the second cover part 32. The guide protrusion 325 may be one of a plurality of guide protrusions 325 circumferentially spaced apart from each other. The guide protrusions 325 may include a number of guide protrusions 325 corresponding to the number of screw guides 214 and 215. The plurality of guide protrusions 325 may be disposed at positions corresponding to the plurality of guide inlets 214. The guide protrusion 325 may be disposed under the first cover part 31.

The sealing protrusion 35 may protrude downward from the cover 30. The sealing protrusion 35 may protrude downward from a lower portion of the second cover part 32. The sealing protrusion 35 may be formed around the insertion port 34. The sealing protrusion 35 may extend along the lower end of the insertion port 34. The sealing protrusion 35 may extend circumferentially. The sealing protrusion 35 may have an annular shape. The sealing protrusion 35 may be downwardly convex. The sealing protrusion 35 may have a shape corresponding to the sealing groove 225. The sealing protrusion 35 may be forcibly inserted into the sealing groove 225 to be in close contact with the upper end of the inner wall 22. The sealing protrusion 35 may be made of an elastic material. For example, the sealing protrusion 35 may be made of rubber or silicone.

The sealing groove 225 may be formed by recessing the upper end of the inner wall 22 downward. The sealing groove 225 may be upwardly open. A sealing groove 225 may be formed around the upper end of the insertion space 24. The seal groove 225 may extend circumferentially along the upper end of the inner wall 22. The sealing groove 225 may have an annular shape. The sealing groove 225 may be concave downward. The upper end of the inner wall 22 may be positioned lower than the upper end of the outer wall 21. The inner wall 22 may be vertically lower than the outer wall 21. The sealing groove 225 may be positioned lower than the upper end of the outer wall 21.

The cover 30 may include a first support protrusion 37. The first support protrusion 37 may protrude radially inward from the outer peripheral surface 33 of the insertion port 34. The first support protrusion 37 may be one of a plurality of first support protrusions circumferentially spaced apart from each other along the outer peripheral surface 33 of the insertion port 34. The plurality of first support protrusions 37 may be spaced apart from each other with a gap formed therebetween.

The inner wall 22 may cover the side and lower portions of the insertion space 24. The inner circumferential surface of the inner wall 22 may cover the side of the insertion space 24. The bottom 23 of the inner wall 22 may cover a lower portion of the insertion space 24. The bottom 23 of the inner wall 22 may have a circular shape.

The second supporting protrusion 27 may protrude upward from the bottom 23 of the inner wall 22 toward the insertion space 24. The second support protrusion 27 may be formed in or near the center of the bottom 23 of the inner wall 22. The second support protrusion 27 may have an upper end surface 271 formed to be flat, and may have an outer peripheral surface 272 narrowing from the bottom 23 of the inner wall 22 toward the upper end surface 271. The second support protrusion 27 may have a truncated form, such as a truncated cone or a truncated cone. The upper end surface 271 of the second support protrusion 27 may be referred to as a flat surface 271. The outer circumferential surface 272 of the second supporting protrusion 27 may be referred to as an inclined surface 272.

Referring to fig. 7 to 9, a cover 30 may be coupled to the housing 20. The cover 30 is rotatable in one circumferential direction to be coupled to the housing 20. When the cover 30 is rotated in this one direction to be coupled to the housing 20, the cover 30 may be moved downward to press the upper end of the inner wall 22. When the cover 30 is rotated in this one direction to be coupled to the housing 20, the cover 30 may be moved downward to hermetically cover the upper end of the coil receiving space 25.

Guide protrusions 325 may protrude from the cover 30 to be inserted into the screw guides 214 and 215. The guide protrusions 325 may be inserted into the screw guides 214 and 215 to guide the rotation of the cover 30. The guide protrusion 325 is movable along the screw guides 214 and 215. The guide protrusion 325 may be inserted into the guide inlet 214. The guide protrusion 325 inserted into the guide inlet 214 is movable along the guide passage 215. The guide passage 215 may guide the screw movement of the guide protrusion 325, and thus may move the cover 30 downward. The guide protrusion 325 may be fastened to the housing 20 at an end of the guide passage 215 to prevent the cover 30 from rotating in the opposite direction.

A stopper 215a may be formed on the housing 20 around the opening. The stopper 215a may protrude from the screw guides 214 and 215. The stopper 215a may protrude inward from the guide passage 215. The stop 215a may be positioned near an end of the guide channel 215. The stopper 215a may protrude from the guide passage 215 and may be bent in a direction in which the guide protrusion 325 moves when the cover 30 rotates in one direction. The stopper 215a may have a curved surface protruding toward the guide protrusion 325. The stopper 215a may have elasticity. The stopper 215a may provide an elastic force in one direction. The stopper 215a may be referred to as a first stopper 215a.

When the guide protrusion 325 moves in one direction along the guide passage 215, the cover 30 may rotate in this one direction. When the guide protrusion 325 moves in one direction along the guide passage 215, the guide protrusion 325 may contact the stopper 215a or may be caught on the stopper 215a. The guide protrusion 325 may move past the stopper 215a in one direction along the guide channel 215. When the guide protrusion 325 is positioned at the end of the guide channel 215, the guide protrusion may be caught on the stopper 215a. The stopper 215a may contact the guide protrusion 325 positioned at the end of the guide passage 215 and may provide a repulsive force in one direction. The stopper 215a may provide a repulsive force to the guide protrusion 325 so as to restrict the cover 30 from rotating in the opposite direction.

For example, the guide protrusion 325 may move across the stopper 215a along a curved surface of the stopper 215a and may be disposed at an end of the guide channel 215. The guide protrusion 325 disposed at the end of the guide channel 215 may be caught on the end of the stopper 215a, thereby restricting the guide protrusion 325 from moving in the opposite direction. Thus, the cover 30 can be prevented from rotating in the opposite direction.

When the cover 30 is coupled to the housing 20, the insertion port 34 may be positioned above the insertion space 24 to communicate with the insertion space 24. When the cover 30 rotates in one direction along the screw guides 214 and 215, the second cover part 32 may move downward to cover or seal the upper end of the coil receiving space 25.

When the cover 30 rotates in one direction along the screw guides 214 and 215, the second cover part 32 may move downward, thereby pressing down the upper end of the inner wall 22 in a state of being in close contact therewith. At least one of the cover 30 or the inner wall 22 may have elasticity. When the cover 30 is completely coupled to the housing 20, the cover 30 and the inner wall 22 may be subjected to vertical stress, and may be closely contacted with each other while changing the shape.

When the cover 30 rotates in one direction along the screw guides 214 and 215, the cover 30 and the outer wall 21 may be in close contact with each other in the vertical direction. The first cover part 31 and the upper end of the outer wall 21 may be in close contact with each other in the vertical direction. At least one of the cover 30 or the outer wall 21 may have elasticity. When the cover 30 is completely coupled to the housing 20, the cover 30 and the outer wall 21 may be subjected to stress in a vertical direction, and thus may be closely contacted with each other while changing the shape.

The sealing protrusion 35 may be inserted into the sealing groove 225. The sealing protrusion 35 may be made of an elastic material. For example, the sealing protrusion 35 may be made of rubber or silicone. When the cover 30 is coupled to the housing 20, the sealing protrusion 35 may contact the sealing groove 225 in the upper end of the inner wall 22 and may be subjected to upward stress, thereby changing the shape. When the cover 30 is coupled to the housing 20, the sealing protrusion 35 may be in close contact with the sealing groove 225 and inserted into the sealing groove 225. The second cover portion 32 may be in close contact with the upper end of the inner wall 22.

The sealing protrusion 35 may protrude downward from the second cover part 32. The sealing groove 225 may be recessed downwardly from the upper end of the inner wall 22. The downwardly protruding length R1 of the sealing protrusion 35 may be greater than the downwardly recessed length R2 of the sealing groove 225. The sealing protrusion 35 may have a vertically elongated oval cross section. The sealing groove 225 may have a horizontally elongated oval cross-section. The curvature of the sealing protrusion 35 may be different from the curvature of the sealing groove 225.

When the sealing protrusion 35 is inserted into the sealing groove 225, the sealing protrusion 35 may contact the sealing groove 225 while being subjected to stress, and may be changed to a shape corresponding to the sealing groove 225. The sealing protrusion 35 may be entirely disposed in the sealing groove 225, and may be closely contacted with the sealing groove 225 while changing the shape.

Accordingly, the cover 30 may be moved downward while being rotated in one direction, thereby being coupled to the housing 20. As a result, the gap between the cover 30 and the housing 20 can be tightly sealed, so that air or contaminants can be prevented from entering the coil receiving space 25 through the gap between the cover 30 and the housing 20. Further, malfunction of the heating coil 15 can be prevented.

Referring to fig. 10, the

extensions

2151 and 2152 may extend from the ends of the guide channel 215 and may be bent at least once. The first extension 2151 may be connected to an end of the guide channel 215. The first extension 2151 may be positioned between the guide channel 215 and the second extension 2152 to connect them to one another. The first extension 2151 may be bent downward at an end of the guide channel 215 and may extend therefrom. Similar to the guide passage 215, the first extension 2151 may be formed by recessing the inner peripheral surface of the outer wall 21 radially outward.

The second extension 2152 may be connected to an end of the first extension 2151. The second extension 2152 may be bent at an end of the first extension 2151 and may extend therefrom. The second extension 2152 may extend in a direction intersecting the first extension 2151. Similar to the guide passage 215, the second extension 2152 may be formed by recessing the inner peripheral surface of the outer wall 21 radially outward.

When moving in one direction, the guide protrusion 325 may sequentially pass through the guide passage 215 and the first extension, and then may be disposed in the second extension 2152. The guide protrusion 325 provided in the second extension 2152 may be caught on the outer wall 21 near the first and

second extensions

2151 and 2152. Therefore, the guide protrusion 325 can be restricted from moving in the upward direction or the other direction.

Referring to fig. 11 and 12, the cover 30 may be movable in one direction and may be coupled to the housing 20. The cover 30 may be screw-coupled to the housing 20 to move downward while rotating.

The housing 20 may include female threads. The female thread 216 may be formed circumferentially around the upper end of the insertion space 24. A female screw 216 may be formed in an inner peripheral surface of an upper end of the outer wall 21.

The cap 30 may include male threads 326. The male screw 326 may be formed circumferentially in the outer circumferential surface of the cover 30. The male screw 326 may be formed circumferentially in the outer circumferential surface of the second cover part 32. The male threads 326 may have a shape corresponding to the female threads 216. The male screw 316 may be rotated in one direction while being engaged with the female screw 216, thereby moving the cap 30 downward. The cover 30 is movable downward to press the inner wall 22 and the outer wall 21 downward.

Accordingly, the cover 30 may be moved downward while being rotated in one direction, and may be coupled to the housing 20. As a result, the gap between the cover 30 and the housing 20 can be tightly sealed, so that air or contaminants can be prevented from entering the coil receiving space 25 through the gap between the cover 30 and the housing 20. Further, malfunction of the heating coil 15 can be prevented.

The restricting protrusion 326b may protrude outward from the outer circumferential surface of the cover 30. The restricting protrusion 326b may protrude outward from the outer circumferential surface of the second cover part 32. The limit protrusion 326b may be one of a plurality of limit protrusions circumferentially spaced apart from each other. The limit protrusion 326b may be disposed above the male thread 326. When the cover 30 is rotated in one direction, the restricting protrusion 326b may also be rotated in this direction.

A stopper 216b may be formed on the housing 20 around the opening. A stop 216b may be positioned adjacent the female thread 216. A stop may be provided above the female thread 216. The stopper 216b may protrude inward from the outer wall 21. The stopper 216b may be bent and then may extend in the direction in which the cover 30 rotates. The stopper 216b may have a curved surface protruding toward the restricting protrusion 326 b. The stopper 216b may have elasticity. The stopper 216b may provide elastic force in one direction. The stop 216b may be referred to as a second stop 216b. The second stopper 216b may have the same or similar shape as the first stopper 215a described above.

When the cap 30 is rotated such that the male threads 326 are engaged with the female threads 216, the limit protrusion 326b may move past the stop 216b and may contact the end of the stop 216b or catch on the end of the stop 216b. Once the limit protrusion 326b moves beyond the stopper 216b, the stopper 216b may contact the limit protrusion 326b, thereby providing a repulsive force in one direction. Accordingly, the stopper 216b may provide a repulsive force to the restricting protrusion 326b, thereby preventing the cover 30 from rotating in the opposite direction.

Referring to fig. 13 and 14, the cover 30 may be fastened to the housing 20 in a snap-fit manner while being moved downward. The cover 30 may include a hook 328. The housing 20 may have a hook engagement recess 218.

The hooks 328 may protrude outward from the outer circumferential surface of the second cover part 32. The hook 328 may have an inclined shape to be widened upward. The hook 328 may have a flat upper end.

The hook engagement groove 218 may be formed by recessing the inner circumferential surface of the upper end of the outer wall 21 outward. The hook engagement recess 218 may have a shape corresponding to the hook 328. The hook 328 may be one of a plurality of hooks symmetrically disposed about the insertion port 34. The hook engagement groove 218 may be formed at a position corresponding to the hook 328.

The hooks 328 may be moved downward and may be inserted into and engaged with the hook engagement grooves 218, thereby preventing the cover 30 from being moved upward or separated from the housing 20. When the hooks 328 are engaged with the hook engagement grooves 218, the cover 30 and the inner wall 22 may be subjected to stress in a vertical direction. When the hooks 328 are engaged with the hook engagement grooves 218, the cover 30 and the outer wall 21 may be subjected to stress in the vertical direction.

Thus, the cover 30 may be moved downward and then may be coupled to the housing 20. As a result, the gap between the cover 30 and the housing 20 can be tightly sealed, so that air or contaminants can be prevented from entering the coil receiving space 25 through the gap between the cover 30 and the housing 20. Further, malfunction of the heating coil 15 can be prevented.

Referring to fig. 15, the rod 200 may be inserted into the insertion space 24 through the insertion port 34. The plurality of first support protrusions 37 may be disposed on the outer circumferential surface of the rod 200, and may support the outer circumferential surface of the rod 200 inserted into the insertion space 24. The second support protrusion 27 may support the bottom of the rod 200 inserted into the insertion space 24.

The first supporting protrusion 37 may protrude to have a circular convex shape. When the rod 200 passes through the insertion port 34, the first support protrusion 37 may guide the rod 200 such that the rod 200 may be inserted into the insertion space 24 while sliding on the surface of the first support protrusion 37.

The second support protrusion 27 may have a flat surface 271 and an inclined surface 272. The flat surface 271 may contact with the bottom surface of the rod 200 inserted into the insertion space 24 to support the rod 200.

A susceptor (not shown) may be included in the wand 200. A susceptor may be provided at the lower portion of the rod 200. When the rod 200 is inserted into the insertion space 24, the susceptor in the rod 200 may be disposed in the insertion space 24 and may be surrounded by the heating coil 15. The heating coil 15 may heat the susceptor in the rod 200. The heating coil 15 can induce a magnetic field in the susceptor. The susceptor may use the magnetic field induced by the heating coil 15 to generate heat. Alternatively, the heating coil 15 may directly generate heat to heat the rod 200 inserted into the insertion space 24. The outer circumferential surface of the lower portion of the stick 200 may be coated with glycerin.

The upper portion of the rod 200 may be exposed to the outside of the cover 30. The user may inhale air through the exposed upper portion of the stick 200. When the user inhales air, the air may be supplied to the stick 200 through the insertion port 34 and the insertion space 24. Here, air may be introduced into the insertion space 24 through gaps between the plurality of first support protrusions 37. The air introduced into the insertion space 24 may be supplied to the bottom of the rod 200 through a gap between the inner circumferential surface of the inner wall 22 and the outer circumferential surface of the rod 200 and a gap between the bottom 23 of the inner wall 22 and the bottom of the rod 200. A portion of the air existing between the bottom of the inner wall 22 and the bottom of the rod 200 may flow obliquely along the inclined surface 272 of the second support protrusion 27, and then may be supplied to the bottom of the rod 200.

Accordingly, the flow path of air can be shortened, and the flow efficiency can be improved. Further, air may be supplied to the rod 200 without passing through the coil receiving space 25 provided with the heating coil 15. In addition, air can be prevented from being introduced into the coil receiving space 25 through the gap between the cover 30 and the housing 20. Further, malfunction of the heating coil 15 can be prevented.

Referring to fig. 16 and 17, the third supporting protrusion 28 may protrude from the periphery of the bottom 23 of the inner wall 22 toward the insertion space 24. The third supporting protrusion 28 may be one of a plurality of third supporting protrusions spaced apart from each other along the outer circumferential surface of the insertion space 24. A plurality of third support protrusions 28 may be disposed along the periphery of the bottom 23 of the inner wall 22. Gaps may be formed between the plurality of third supporting protrusions 28 to allow air to flow therethrough. Each of the third support protrusions may include a portion inclined from the bottom of the inner wall 22 toward the inner circumferential surface of the inner wall 22.

The third support protrusion 28 may include an inclined portion 281. The inclined portion 281 may be formed to be inclined downward from the inner circumferential surface of the inner wall 22. The inclined portion 281 may be inclined such that the cross-sectional area of the insertion space 24 decreases downward. The angled portion 281 may be spaced upwardly from the bottom 23 of the inner wall 22. The inclined portion 281 may be one of a plurality of inclined portions arranged circumferentially. When the rod 200 is inserted into the insertion space 24, the periphery of the bottom of the rod 200 may contact the inclined portion 281, thereby guiding the positioning of the rod 200.

The third support protrusion 28 may include a side support portion 282. The side support portion 282 may have a shape protruding from the inner peripheral surface of the inner wall 22 toward the inside of the insertion space 24. The side support portion 282 may protrude by the same or similar distance as the first support protrusion 37. The side support portion 282 may extend downward from a lower end of the inclined portion 281. The side support portions 282 may extend parallel to the inner peripheral surface of the inner wall 22. The side support portion 282 may support an outer circumferential surface of a lower portion of the rod 200. The first support protrusions 37 and the side support portions 282 may support the outer circumferential surfaces of the rod 200 at the upper and lower levels so as to prevent the rod 200 from shaking in the insertion space 24.

The third supporting protrusion 28 may include a bottom supporting portion 283. The bottom support portion 283 may protrude upward from the bottom 23 of the inner wall 22. The bottom support portion 283 may abut the inner peripheral surface of the inner wall 22. The bottom support portion 283 may extend to protrude radially inward from a lower end of the inclined portion 281 or the side support portion 282. The bottom support portion 283 may support a peripheral portion of the rod 200. The bottom support portion 283 may space the rod 200 upward from the bottom 23 of the inner wall 22.

When the user sucks air through the stick 200 inserted into the insertion space 24, air may be supplied to the stick 200 through the insertion port 34 and the insertion space 24. Here, air may be introduced into the insertion space 24 through gaps between the plurality of first support protrusions 37. The air introduced into the insertion space 24 may pass through a gap between the inner circumferential surface of the inner wall 22 and the outer circumferential surface of the rod 200. After passing through the gap between the third support protrusions 28, air may flow into the space between the bottom 23 of the inner wall 22 and the bottom of the rod 200, and thus may be supplied to the bottom of the rod 200.

Accordingly, when the rod 200 is inserted into the insertion space 24, the bottom of the rod 200 may be positioned at the center of the insertion space 24 while sliding on the third support protrusion 28. Further, the rod 200 inserted into the insertion space 24 can be stably held. In addition, the rod 200 may be spaced upward from the bottom of the insertion space 24 by the third support protrusions 28, thereby providing a gap through which air flows.

In addition, the flow path of air can be shortened, and the flow efficiency can be improved. In addition, air may be more uniformly supplied to the center of the bottom of the stick 200. Further, air may be supplied to the rod 200 without passing through the coil receiving space 25 provided with the heating coil 15. In addition, air can be prevented from being introduced into the coil receiving space 25 through the gap between the cover 30 and the housing 20. Further, malfunction of the heating coil 15 can be prevented.

Referring to fig. 1 to 17, an aerosol-generating device 100 according to an aspect of the present disclosure comprises: a housing 20 including an inner wall 22 defining an insertion space 24 therein and an outer wall 21 surrounding an outer side of the inner wall 22 to define a coil receiving space 25 formed between the inner wall 22 and the outer wall 21, wherein each of the insertion space 24 and the coil receiving space 25 has an opening at one side; a heating coil 15 wound on the outside of the inner wall 22 and disposed in the coil receiving space 25; and a cover 30 configured to cover the opening of the coil receiving space 25 and including an insertion port 34 allowing communication between the insertion space 24 and the outside of the housing 20, wherein the cover 30 includes a sealing protrusion 35, the sealing protrusion 35 being positioned between the opening of the insertion space 24 and the opening of the coil receiving space 25 to press against the inner wall 22.

In addition, according to another aspect of the present disclosure, the aerosol-generating device 100 may further comprise a sealing groove 225 formed in the inner wall, wherein the sealing protrusion 35 may protrude downward from the cap 30 and may be configured to be inserted into the sealing groove 225.

Additionally, in accordance with another aspect of the present disclosure, the sealing protrusion 35 may be configured to fit into the sealing groove 225 in an interference fit.

In addition, according to another aspect of the present disclosure, the curvature of the sealing protrusion 35 may be different from the curvature of the sealing groove 225.

In addition, according to another aspect of the present disclosure, each of the sealing groove 225 and the sealing protrusion 35 extends circumferentially along the inner wall, and the sealing protrusion 35 may have elasticity.

In addition, according to another aspect of the present disclosure, the cover 30 may be rotated in one direction to be coupled to the case 20 by moving the cover 30 downward to press the upper end of the inner wall 22.

In addition, according to another aspect of the present disclosure, the case 20 may include concave screw guides 214 and 215 formed at an upper portion of the outer wall 21, the screw guides 214 and 215 may be inclined downward, and the aerosol-generating device may further include guide protrusions 325 protruding from the cover 30 and configured to move along the screw guides 214 and 215 when the cover 30 is rotated.

In addition, according to another aspect of the present disclosure, the aerosol-generating device may further include a first stopper 215a protruding from the screw guides 214 and 215, the first stopper 215a contacting the guide protrusion 325 to prevent the cap 30 from rotating in the opposite direction.

In addition, according to another aspect of the present disclosure, the aerosol-generating device may further include a first extension 2151 bent downward at the ends of the spiral guides 214 and 215 and a second extension 2152 bent at and extending from the ends of the first extension 2151.

Additionally, according to another aspect of the present disclosure, the housing 20 may include female threads 216 formed circumferentially around the opening of the insertion space 24, and the cap may include male threads 326 configured to engage with the female threads 216.

In addition, according to another aspect of the present disclosure, the cap 30 may include a limiting protrusion 326b formed near the male screw 326, and the aerosol-generating device may further include a second stopper 216b protruding from the housing 20 near the female screw 216, the second stopper 216b contacting the limiting protrusion 326b to prevent the cap 30 from rotating in the opposite direction.

Additionally, according to another aspect of the present disclosure, the cover 30 may be configured to be secured to the housing 20 in a snap-fit manner.

In addition, according to another aspect of the present disclosure, the aerosol-generating device may further comprise a plurality of first support protrusions 37 protruding inwardly from a circumferential surface of the cap 30 defining the insertion opening 34.

In addition, according to another aspect of the present disclosure, the plurality of first support protrusions 37 may be spaced apart from each other.

In addition, according to another aspect of the present disclosure, the aerosol-generating device may further comprise a second support protrusion 27 protruding from the center of the bottom 23 of the inner wall 22 toward the insertion space 24.

In addition, according to another aspect of the present disclosure, the second support protrusion 27 may be tapered and include a planar top surface.

In addition, according to another aspect of the present disclosure, the aerosol-generating device may further comprise a third support protrusion 28 protruding from the periphery of the bottom 23 of the inner wall 22 towards the insertion space 24.

In addition, according to another aspect of the present disclosure, the third support protrusion 28 may be one of a plurality of third support protrusions arranged along the periphery of the bottom 23 of the inner wall 22 and spaced apart from each other.

In addition, according to another aspect of the present disclosure, the third supporting protrusion 28 may include an inclined portion (281) extending obliquely from the outer circumferential surface of the inner wall 22 toward the bottom 23 of the inner wall 22.

In addition, according to another aspect of the present disclosure, the third supporting protrusion 28 may include a side supporting portion 282 extending downward from the lower end of the inclined portion 281 to be parallel to the inner circumferential surface of the inner wall 22, and a bottom supporting portion 283 protruding radially inward from the lower end of the side supporting portion 282.

The particular embodiments of the disclosure described above, or other embodiments, are not mutually exclusive or different from each other. Any or all of the elements of the embodiments of the present disclosure described above may be combined with each other in configuration or function.

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

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

Claims

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

a housing including an inner wall defining an insertion space therein and an outer wall surrounding an outer side of the inner wall to define a coil receiving space formed between the inner wall and the outer wall, wherein each of the insertion space and the coil receiving space has an opening at one side;

a heating coil wound on an outer side of the inner wall and disposed in the coil receiving space; and

a cover configured to cover an opening of the coil receiving space and including an insertion port allowing communication between the insertion space and an outside of the housing,

wherein the cover includes a sealing protrusion positioned between the opening of the insertion space and the opening of the coil receiving space to be pressed against the inner wall.

2. An aerosol-generating device according to claim 1, further comprising a sealing groove formed in the inner wall,

wherein the sealing protrusion protrudes downward from the cover and is configured to be inserted into the sealing groove.

3. An aerosol-generating device according to claim 2, wherein the sealing protrusion is configured to fit into the sealing groove in an interference fit.

4. An aerosol-generating device according to claim 2, wherein the curvature of the sealing protrusion is different from the curvature of the sealing groove.

5. An aerosol-generating device according to claim 2, wherein each of the sealing groove and the sealing protrusion extends circumferentially along the inner wall,

wherein the sealing protrusion has elasticity.

6. An aerosol-generating device according to claim 1, wherein the cap is rotated in one direction to be coupled to the housing by moving the cap downwards to press an upper end of the inner wall.

7. An aerosol-generating device according to claim 6, wherein the housing further comprises a recessed screw guide formed in an upper portion of the outer wall, wherein the screw guide is inclined downwardly, and

wherein the aerosol-generating device further comprises a guide protrusion protruding from the cap and configured to move along the helical guide when the cap is rotated,

a stopper configured to restrict rotation of the cover in the other direction.

8. An aerosol-generating device according to claim 6, wherein the housing further comprises a female thread formed circumferentially around the opening of the insertion space, and

wherein the cap includes a male thread configured to engage with the female thread,

wherein the aerosol-generating device further comprises a stop configured to limit rotation of the cap in the other direction.

9. An aerosol-generating device according to claim 1, wherein the cap is further configured to be fastened to the housing in a snap-fit manner.

10. An aerosol-generating device according to claim 1, further comprising a plurality of first support protrusions protruding inwardly from a circumferential surface of the cap defining the insertion opening,

wherein the plurality of first support protrusions are spaced apart from each other.

11. An aerosol-generating device according to claim 1, further comprising a second support protrusion protruding from the centre of the bottom of the inner wall towards the insertion space,

wherein the second support protrusion is tapered and includes a planar top surface.

12. An aerosol-generating device according to claim 1, further comprising a third support protrusion protruding from the periphery of the bottom of the inner wall towards the insertion space,

wherein the third supporting protrusion is one of a plurality of third supporting protrusions circumferentially arranged along a periphery of a bottom of the inner wall and spaced apart from each other.

13. An aerosol-generating device according to claim 12, wherein the third support protrusion comprises an inclined portion extending obliquely from an inner peripheral surface of the inner wall towards a bottom of the inner wall.

14. An aerosol-generating device according to claim 13, wherein the third support protrusion further comprises:

a side support portion extending downward from a lower end of the inclined portion so as to be parallel to an inner peripheral surface of the inner wall; and

and a bottom support portion protruding radially inward from a lower end of the side support portion.