Aerosol-generating system with low resistance to draw and improved flavour delivery

Abstract

An aerosol-generating system is provided, including: an aerosol-generating article configured to produce an inhalable aerosol upon heating, the article extending from a mouth end to a distal end and including: an aerosol-generating element, and a downstream section located downstream of the element, the downstream section extending from a downstream end of the element to the mouth end of the article, the downstream section including a hollow tubular element and a resistance-to-draw of the downstream section being less than about 10 mm H 2 O; and an aerosol-generating device having distal and mouth ends, the device including: a body extending from the distal to the mouth end, the body defining a device cavity to removably receive the article at the mouth end, and a heater to heat the element when the article is received within the device cavity, and to externally heat the article when received within the device.

1 .- 15 . (canceled) 
     
     
         16 . An aerosol-generating system, comprising:
 an aerosol-generating article configured to produce an inhalable aerosol upon heating, the aerosol-generating article extending from a mouth end to a distal end and comprising:
 an aerosol-generating element, and 
 a downstream section located downstream of the aerosol-generating element, the downstream section extending from a downstream end of the aerosol-generating element to the mouth end of the aerosol-generating article, 
 wherein the downstream section comprises a hollow tubular element and a resistance-to-draw of the downstream section is less than about 10 mm H 2 O; and 
   an aerosol-generating device having a distal end and a mouth end, the aerosol-generating device comprising:
 a body extending from the distal end to the mouth end, the body defining a device cavity configured to removably receive the aerosol-generating article at the mouth end of the device, and 
 a heater configured to heat the aerosol-generating element when the aerosol-generating article is received within the device cavity, 
 wherein the heater is further configured to externally heat the aerosol-generating article when received within the aerosol-generating device. 
   
     
     
         17 . The aerosol-generating system according to  claim 16 , wherein the hollow tubular element of the aerosol-generating article extends from the downstream end of the aerosol-generating element to the mouth end of the aerosol-generating article. 
     
     
         18 . The aerosol-generating system according to  claim 16 , wherein the heater of the aerosol-generating device is further configured to circumscribe the aerosol-generating article when the aerosol-generating article is received within the device cavity. 
     
     
         19 . The aerosol-generating system according to  claim 16 , wherein an operating temperature of the heater is between about 180 degrees Celsius and about 200 degrees Celsius. 
     
     
         20 . The aerosol-generating system according to  claim 16 , wherein the downstream section comprises a ventilation zone at a location along the hollow tubular element. 
     
     
         21 . The aerosol-generating system according to  claim 20 , wherein a distance between the ventilation zone and the mouth end of the aerosol-generating article is less than about 25 millimetres. 
     
     
         22 . The aerosol-generating system according to  claim 20 , wherein a distance between the ventilation zone and the mouth end of the aerosol-generating article is at least about 10 millimetres. 
     
     
         23 . The aerosol-generating system according to  claim 20 , wherein the ventilation zone is arranged to be exposed when the aerosol-generating article is received within the device cavity. 
     
     
         24 . The aerosol-generating system according to  claim 16 , wherein the aerosol-generating article has a ventilation level of at least about 10 percent. 
     
     
         25 . The aerosol-generating system according to  claim 16 , wherein the aerosol-generating element has a length from about 10 millimetres to about 20 millimetres. 
     
     
         26 . The aerosol-generating system according to  claim 16 , wherein the aerosol-generating element comprises tobacco cut filler. 
     
     
         27 . The aerosol-generating system according to  claim 16 , wherein an aerosol former content in the aerosol-generating element is at least about 10 percent by weight. 
     
     
         28 . The aerosol-generating system according to  claim 16 , wherein the hollow tubular element has a length of at least about 25 millimetres and a cross-section of the hollow tubular element is substantially constant. 
     
     
         29 . The aerosol-generating system according to  claim 16 , wherein a peripheral wall thickness of the hollow tubular element is less than about 1.5 millimetres. 
     
     
         30 . The aerosol-generating system according to  claim 16 , wherein the hollow tubular element defines an unobstructed airflow pathway extending from the downstream end of the aerosol-generating element to the downstream end of the downstream section.