Aerosol-generating device

Abstract

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

1 . An aerosol-generating device comprising:
 a housing comprising an inner wall to define an insertion space therein and an outer wall surrounding an outer side of the inner wall to define a coil reception space formed between the inner wall and the outer wall, wherein each of the insertion space and the coil reception space have an opening at one side;   a heating coil wound around the outer side of the inner wall and disposed in the coil reception space; and   a cover configured to cover the opening of the coil reception space and comprising an insertion port allowing communication between the insertion space and an outside of the housing,   wherein the cover comprises a sealing protrusion positioned between the opening of the insertion space and the opening of the coil reception space to press against the inner wall.   
     
     
         2 . The 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 . The aerosol-generating device according to  claim 2 , wherein the sealing protrusion is configured to be fitted into the sealing groove in an interference-fit manner. 
     
     
         4 . The aerosol-generating device according to  claim 2 , wherein the sealing protrusion has a curvature different than a curvature of the sealing groove. 
     
     
         5 . The 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 . The aerosol-generating device according to  claim 1 , wherein the cover is rotated in one direction to be coupled to the housing by moving the cover downwards to press an upper end of the inner wall. 
     
     
         7 . The aerosol-generating device according to  claim 6 , wherein the housing further comprises a recessed helical guide formed at the upper portion of the outer wall, wherein the helical guide is angled downwards, and
 wherein the aerosol-generating device further comprises a guide protrusion projecting from the cover and configured to be moved along the helical guide when the cover is rotated,   a stopper configured to restrict the cover to rotate in another direction.   
     
     
         8 . The aerosol-generating device according to  claim 6 , wherein the housing further comprises a female thread circumferentially formed around the opening of the insertion space, and
 wherein the cover comprises a male thread configured to be engaged with the female thread   wherein the aerosol-generating device further comprises a stopper configured to restrict the cover to rotate in another direction.   
     
     
         9 . The aerosol-generating device according to  claim 1 , wherein the cover is further configured to be fastened to the housing in a snap-fit manner. 
     
     
         10 . The aerosol-generating device according to  claim 1 , further comprising a plurality of first support protrusions projecting inward from a circumferential surface of the cover defining the insertion port,
 wherein the plurality of first support protrusions are spaced apart from each other.   
     
     
         11 . The aerosol-generating device according to  claim 1 , further comprising a second support protrusion projecting toward the insertion space from a center of a bottom of the inner wall,
 wherein the second support protrusion is tapered and comprises a planar top surface.   
     
     
         12 . The aerosol-generating device according to  claim 1 , further comprising a third support protrusion projecting toward the insertion space from a periphery of a bottom of the inner wall,
 wherein the third support protrusion is one of a plurality of third support protrusions which are circumferentially arranged along the periphery of the bottom of the inner wall and spaced apart from each other.   
     
     
         13 . The aerosol-generating device according to  claim 12 , wherein the third support protrusion comprises a sloping portion obliquely extending toward the bottom of the inner wall from an inner circumferential surface of the inner wall. 
     
     
         14 . The aerosol-generating device according to  claim 13 , wherein the third support protrusion further comprises:
 a side support portion extending downwards from a lower end of the sloping portion to be parallel to the inner circumferential surface of the inner wall; and   a bottom support portion projecting radially inwards from a lower end of the side support portion.