An aerosol-generating device and a method of controlling aerosol production thereof

Abstract

A method of controlling aerosol production in an aerosol-generating system is provided, the system including an aerosol-generating article including an aerosol-forming substrate, the substrate being non-tobacco, a total aerosol-former content of the substrate being at least 30% by weight, and a water content of the substrate being between 5% and 35% by weight, an aerosol-generating device including a heating chamber to receive the article, a heating system associated with a heating element that to heat the substrate, and a power source providing power to the heating system; and the method including controlling power during heating of the substrate to form an aerosol for inhalation by a user and having a first heating mode, a second heating mode, and a third heating mode. An aerosol-generating system is also provided.

1 .- 14 . (canceled) 
     
     
         15 . A method of controlling aerosol production in an aerosol-generating system,
 the aerosol-generating system comprising:
 an aerosol-generating article comprising an aerosol-forming substrate, wherein the aerosol-forming substrate is a non-tobacco substrate, wherein a total aerosol-former content of the aerosol-forming substrate is greater than or equal to 30 percent by weight, and wherein a water content of the aerosol-forming substrate is between 5 percent by weight and 35 percent by weight, 
 an aerosol-generating device comprising a heating chamber configured to at least partially receive the aerosol-generating article, 
 a heating system associated with a heating element that is configured to heat the aerosol-forming substrate, and 
 a power source providing power to the heating system; and 
   the method comprising controlling power during heating of the aerosol-forming substrate to form an aerosol for inhalation by a user to:
 in a first heating mode, adjust a temperature of the heating element to increase the temperature from an initial temperature to a first temperature, wherein the first temperature is maintained for a first predetermined time period, 
 in a second heating mode, adjust the temperature of the heating element to one or more second temperatures during a second predetermined time period, wherein the second predetermined time period is subsequent to the first predetermined time period, and 
 in a third heating mode, adjust the temperature of the heating element to be constant and equal to a third temperature in a third predetermined time period, wherein the third temperature approximately corresponds to the first temperature and the third predetermined time period is subsequent to the second predetermined time period. 
   
     
     
         16 . The method according to  claim 15 , wherein the heating system is inductively coupled to the heating element internal to the aerosol-forming substrate, the heating element configured to internally heat the aerosol-forming substrate from within the aerosol-forming substrate. 
     
     
         17 . The method according to  claim 15 , wherein the first temperature is between 245 and 285 degrees Celsius. 
     
     
         18 . The method according to  claim 15 , wherein the heating system comprises the heating element, wherein the heating element is configured to externally heat the aerosol-forming substrate. 
     
     
         19 . The method according to  claim 15 , wherein the first temperature is between 180 degrees Celsius and 230 degrees Celsius. 
     
     
         20 . The method according to  claim 15 , wherein adjusting the temperature of the heating element to one or more second temperatures during the second predetermined time period comprises lowering the temperature of the heating element from the first temperature. 
     
     
         21 . The method according to  claim 20 , wherein the one or more second temperatures are between 190 degrees Celsius and 220 degrees Celsius. 
     
     
         22 . An aerosol-generating system, comprising:
 an aerosol-generating article comprising an aerosol-forming substrate, wherein the aerosol-forming substrate is a non-tobacco substrate, wherein a total aerosol-former content of the aerosol-forming substrate is greater than or equal to 30 percent by weight, and wherein a water content of the aerosol-forming substrate is between 5 percent by weight and 35 percent by weight; and   an aerosol-generating device comprising:
 a heating chamber configured to at least partially receive the aerosol-generating article, 
 a heating system associated with a heating element that is configured to heat the aerosol-forming substrate, 
 a power source providing power to the heating system, and 
 a controller configured to control the power during heating of the aerosol-forming substrate to form an aerosol for inhalation by a user to:
 in a first heating mode, adjust a temperature of the heating element to increase from an initial temperature to a first temperature, wherein the first temperature is maintained for a first predetermined time period, 
 in a second heating mode, adjust the temperature of the heating element to one or more second temperatures during a second predetermined time period, wherein the second predetermined time period is subsequent to the first predetermined time period, and 
 in a third heating mode, adjust the temperature of the heating element to be constant and equal to a third temperature in a third predetermined time period, wherein the third temperature approximately corresponds to the first temperature and the third predetermined time period is subsequent to the second predetermined time period. 
 
   
     
     
         23 . The aerosol-generating system according to  claim 22 , wherein the heating system is inductively coupled to the heating element internal to the aerosol-forming substrate, the heating element being configured to internally heat the aerosol-forming substrate. 
     
     
         24 . The aerosol-generating system according to  claim 23 , wherein the first temperature is between 245 degrees Celsius and 285 degrees Celsius. 
     
     
         25 . The aerosol-generating system according to  claim 22 , wherein the heating system comprises a heating element that is configured to externally heat the aerosol-forming substrate. 
     
     
         26 . The aerosol-generating system according to  claim 25 , wherein the first temperature is between 180 degrees Celsius and 230 degrees Celsius. 
     
     
         27 . The aerosol-generating system according to  claim 22 , wherein adjusting the temperature of the heating element to one or more second temperatures during the second predetermined time period comprises lowering the temperature of the heating element from the first temperature.