Aerosol generating device

Abstract

An aerosol generating device includes a first housing, and a second housing positioned in the first housing and configured to accommodate an aerosol generating article, wherein the second housing includes a first layer including a first rim having a first perimeter and a first width and a plurality of first airflow paths formed in the first rim, and a second layer including a second rim connected to the first rim and a second airflow path formed in the second rim, the second airflow path being in fluid connection with the plurality of first airflow paths, the second rim having a second perimeter and a second width.

1 . An aerosol generating device, comprising:
 a first housing; and   a second housing positioned in the first housing and configured to accommodate an aerosol generating article,   wherein   the second housing comprises:   a first layer comprising a first rim and a plurality of first airflow paths formed in the first rim, the first rim having a first perimeter and a first width; and   a second layer comprising a second rim connected to the first rim and a second airflow path formed in the second rim, the second airflow path being in fluid connection with the plurality of first airflow paths, the second rim having a second perimeter and a second width.   
     
     
         2 . The aerosol generating device of  claim 1 , wherein
 the plurality of first airflow paths are formed to be recessed by the first width of the first rim.   
     
     
         3 . The aerosol generating device of  claim 1 , wherein
 the plurality of first airflow paths are arranged at substantially equal intervals along the first perimeter of the first rim.   
     
     
         4 . The aerosol generating device of  claim 1 , wherein
 the second airflow path is a single airflow path.   
     
     
         5 . The aerosol generating device of  claim 1 , wherein
 the second layer further comprises a susceptor, the susceptor being positioned in the second rim, configured to form the second airflow path with the second rim, and configured to accommodate at least a portion of the aerosol generating article.   
     
     
         6 . The aerosol generating device of  claim 1 , wherein
 the second housing further comprises a third layer, the third layer comprising a third rim connected to the second rim and a plurality of third airflow paths formed in the third rim, the third rim and having a third perimeter and a third width, the plurality of third airflow paths being in fluid connection with the second airflow path.   
     
     
         7 . The aerosol generating device of  claim 6 , wherein
 the plurality of third airflow paths are formed to be recessed by the third width of the third rim.   
     
     
         8 . The aerosol generating device of  claim 6 , wherein
 the plurality of third airflow paths are arranged at substantially equal intervals along the third perimeter of the third rim.   
     
     
         9 . The aerosol generating device of  claim 6 , wherein
 the third layer further comprises a plurality of recesses positioned between a pair of adjacent third airflow paths and respectively formed in a thickness direction of the third rim, the thickness direction intersecting a direction of the third perimeter and a direction of the third width.   
     
     
         10 . The aerosol generating device of  claim 6 , wherein
 the second layer further comprises a first bottom portion, the first bottom portion being connected to the second rim and configured to support the third rim.   
     
     
         11 . The aerosol generating device of  claim 10 , wherein
 the first bottom portion comprises a plurality of first airflow holes in fluid connection with the plurality of third airflow paths.   
     
     
         12 . The aerosol generating device of  claim 11 , wherein
 the second layer further comprises:   a wall portion connected to the first bottom portion and comprising a plurality of second airflow holes; and   a second bottom portion connected to the wall portion and configured to guide an airflow to the aerosol generating article.   
     
     
         13 . The aerosol generating device of  claim 1 , wherein
 the second housing further comprises an article insertion portion and a plurality of insertion portion airflow paths,   the article insertion portion comprises a plurality of fixing portions connected to the first rim, the plurality of fixing portions being configured to fix the aerosol generating article, and   the plurality of insertion portion airflow paths are in fluid connection with the plurality of first airflow paths and formed between the plurality of fixing portions.   
     
     
         14 . The aerosol generating device of  claim 13 , wherein
 the first housing is configured to be hermetic such that air is introduced into the second housing only through the plurality of insertion portion airflow paths.   
     
     
         15 . A housing for an aerosol generating device, the housing comprising:
 a first layer comprising a first rim and a plurality of first airflow paths formed in the first rim, the first rim having a first perimeter and a first width;   a second layer comprising a second rim connected to the first rim and a second airflow path formed in the second rim, the second rim having a second perimeter and a second width, the second airflow path being in fluid connection with the plurality of first airflow paths, and   a third layer comprising a third rim connected to the second rim and a plurality of third airflow paths formed in the third rim, the third rim having a third perimeter and a third width, the plurality of third airflow paths being in fluid connection with the second airflow path.