Aerosol-generating device having a ventilation chamber

Abstract

An aerosol-generating device to receive an aerosol-generating article is provided, the device including: distal and mouth ends; a housing including a peripheral wall defining a device cavity to removably receive the article at the mouth end; and a heater to heat the article when the article is received within the device cavity, the housing including a ventilation chamber defined within the peripheral wall, the chamber configured to be in fluid communication with an exterior of the device and the article received within the device cavity, and with the exterior of the device through a chamber inlet defined within a thickness of the peripheral wall, the chamber inlet having a cross-sectional area smaller than a cross-sectional area of the chamber and extending between the chamber and the mouth end, and in which a length of the chamber is less than or equal to 8 mm.

1 .- 14 . (canceled) 
     
     
         15 . An aerosol-generating device configured to receive an aerosol-generating article, the aerosol-generating device comprising:
 a distal end and a mouth end;   a housing comprising a peripheral wall defining a device cavity configured to removably receive the aerosol-generating article at the mouth end of the aerosol-generating device; and   a heater configured to heat the aerosol-generating article when the aerosol-generating article is received within the device cavity,   wherein the housing further comprises a ventilation chamber defined within the peripheral wall,   wherein the ventilation chamber is configured to be in fluid communication:
 with an exterior of the aerosol-generating device and the aerosol-generating article received within the device cavity, and 
 with the exterior of the aerosol-generating device through a chamber inlet defined within a thickness of the peripheral wall, the chamber inlet having a cross-sectional area that is smaller than a cross-sectional area of the ventilation chamber and extending between the ventilation chamber and the mouth end of the aerosol-generating device, and 
   wherein a length of the ventilation chamber is less than or equal to 8 mm.   
     
     
         16 . The aerosol-generating device according to  claim 15 , wherein the ventilation chamber is located at a longitudinal position away from the mouth end of the aerosol-generating device. 
     
     
         17 . The aerosol-generating device according to  claim 15 , wherein the length of the chamber inlet is between about 1 mm and about 6 mm. 
     
     
         18 . The aerosol-generating device according to  claim 15 , wherein the chamber inlet has a cross-sectional area that is less than or equal to 50 percent of a cross-sectional area of the ventilation chamber. 
     
     
         19 . The aerosol-generating device according to  claim 15 , wherein a thickness of a portion of the peripheral wall defining the ventilation chamber is different than a thickness of a different portion of the peripheral wall. 
     
     
         20 . The aerosol-generating device according to  claim 19 , wherein the thickness of the portion of the peripheral wall defining the ventilation chamber is less than the thickness of the different portion of the peripheral wall. 
     
     
         21 . The aerosol-generating device according to  claim 20 , wherein the thickness of the portion of the peripheral wall defining the ventilation chamber varies along a longitudinal direction. 
     
     
         22 . The aerosol-generating device according to  claim 15 , wherein the ventilation chamber is annular. 
     
     
         23 . The aerosol-generating device according to  claim 15 , further comprising an extractor configured to extract the aerosol-generating article received in the aerosol-generating device, and to be movable within the device cavity. 
     
     
         24 . The aerosol-generating device according to  claim 23 , wherein the extractor is further configured to expose the ventilation chamber when the extractor is in an operating position, the operating position being defined by the heater being in contact with an aerosol-forming substrate of the aerosol-generating article. 
     
     
         25 . The aerosol-generating device according to  claim 23 ,
 wherein an air-flow path is defined between the peripheral wall of the housing and an external surface of the extractor, and   wherein the ventilation chamber is in fluid communication with the air-flow path.   
     
     
         26 . An aerosol-generating system, comprising:
 an aerosol-generating article comprising:
 a rod of aerosol-forming substrate, 
 a filter disposed downstream of the rod, wherein the rod and the filter are assembled within a wrapper, and 
 a ventilation zone located on the wrapper, the ventilation zone comprising a plurality of apertures extending through the wrapper; and 
   an aerosol-generating device according to  claim 15 ,   wherein the aerosol-generating system is configured so that, when the aerosol-generating article is received within the device cavity, the ventilation zone of the aerosol-generating article is located within the device cavity such that the ventilation chamber overlies the ventilation zone of the aerosol-generating article.   
     
     
         27 . The aerosol-generating system according to  claim 26 ,
 wherein the filter of the aerosol-generating article comprises:
 a mouthpiece segment comprising a plug of filtration material disposed downstream of the rod of aerosol-forming substrate, and 
 a hollow tubular segment located between the mouthpiece segment and the rod of aerosol-forming substrate, 
   wherein the ventilation zone is located at a position along an upstream half of the hollow tubular segment.   
     
     
         28 . The aerosol-generating system according to  claim 26 , wherein the heater comprises an elongate heating element configured to penetrate the rod of aerosol-forming substrate when the aerosol-generating article is received within the aerosol-generating device.