Aerosol-generating device

Abstract

Disclosed is an aerosol-generating device including a housing formed to be elongated, a heater module disposed in an internal space in the housing and including a heater extending in the longitudinal direction of the housing, and an extractor surrounding a portion of a side surface of the heater. The heater module includes a bottom part, on which the heater is disposed, and a pair of inner walls, which protrudes from the bottom part and is opposite each other with respect to the heater. The extractor includes a lower part, which faces the bottom part and through which the heater passes, and a pair of side walls, which protrudes from the lower part, is opposite each other with respect to the heater, and is alternately disposed with the pair of inner walls. The lower part is spaced apart from the bottom part and the heater to define an airflow path.

What is claimed is: 
     
         1 . An aerosol-generating device comprising:
 a housing formed to be elongated;   a heater module disposed in an internal space in the housing, the heater module comprising a heater extending in a longitudinal direction of the housing; and   an extractor surrounding a portion of a side surface of the heater,   wherein the heater module comprises:   a bottom part, the heater being disposed on the bottom part; and   a pair of inner walls protruding from the bottom part, the pair of inner walls being opposite each other with respect to the heater,   wherein the extractor comprises:   a lower part facing the bottom part, the heater penetrating the lower part; and   a pair of side walls protruding from the lower part, the pair of side walls being opposite each other with respect to the heater and alternately disposed with the pair of inner walls, and   wherein the lower part is spaced apart from the bottom part and the heater to define an airflow path.   
     
     
         2 . The aerosol-generating device according to  claim 1 , wherein the pair of inner walls is spaced apart from each other in a first direction, and
 wherein the pair of side walls is spaced apart from each other in a second direction intersecting the first direction.   
     
     
         3 . The aerosol-generating device according to  claim 1 , wherein the lower part comprises a hole, the heater passing through the hole, and
 wherein the hole has a boundary spaced apart from an outer side surface of the heater.   
     
     
         4 . The aerosol-generating device according to  claim 1 , wherein the heater module further comprises an inner body comprising a hole, the pair of side walls passing through the hole,
 wherein the pair of inner walls protrudes from the inner body at positions adjacent to the hole and connects the bottom part to the inner body, and   wherein a boundary of the hole is spaced apart from the pair of side walls to define an airflow path.   
     
     
         5 . The aerosol-generating device according to  claim 4 , wherein the heater module further comprises a groove recessed in the boundary of the hole in the inner body, and
 wherein the groove is spaced apart from the side wall to define the airflow path.   
     
     
         6 . The aerosol-generating device according to  claim 4 , wherein the boundary of the hole in the inner body comprises:
 first and second portions disposed opposite each other, the first and second portions forming portions of a circle; and   third and fourth portions disposed opposite each other and alternately positioned with the first and second portions, the third and fourth portions forming portions of a circle, and   wherein the circle formed by the third and fourth portions has a radius greater than a radius of the circle formed by the first and second portions.   
     
     
         7 . The aerosol-generating device according to  claim 6 , wherein the third and fourth portions are formed as inclined surfaces forming acute angles with respect to a longitudinal axis of the heater. 
     
     
         8 . The aerosol-generating device according to  claim 4 , further comprising a cup surrounding the pair of inner walls and the pair of side walls,
 wherein an inner side surface of the cup is spaced apart from the pair of side walls to define an airflow path.   
     
     
         9 . The aerosol-generating device according to  claim 1 , wherein one side of the side wall contacts one side of the inner wall and forms oblique lines. 
     
     
         10 . The aerosol-generating device according to  claim 9 , wherein the inner wall forms acute angles with respect to a longitudinal axis of the heater. 
     
     
         11 . The aerosol-generating device according to  claim 1 , wherein each of the pair of side walls has a width gradually increasing in a direction away from the lower part. 
     
     
         12 . The aerosol-generating device according to  claim 1 , wherein the heater module further comprises:
 an inner body comprising a hole, the pair of side walls passing through the hole;   a first inner wing bent from one end of the inner body; and   a second inner wing bent from an opposite end of the inner body, and   wherein a first gap is defined between the pair of inner walls, one of the pair of side walls being disposed in the first gap,   wherein a second gap is defined between the pair of inner walls, another of the pair of side walls being disposed in the second gap, and   wherein the first gap, the second gap, the first inner wing, and the second inner wing are placed in a row.   
     
     
         13 . The aerosol-generating device according to  claim 12 , further comprising a support fixed to the housing, the support comprising a cup, the heater module and the extractor being inserted into the cup,
 wherein the heater module further comprises a coupling portion protruding from the first inner wing and coupled to the support through hook engagement.