Aerosol provision device

Abstract

An aerosol provision device, for generating aerosol from aerosol generating material can include one or more aerosol generators arranged to cause aerosol to be generated from the aerosol generating material and a controller for controlling the one or more aerosol generators. The controller may be operable in a first mode of operation to set a first heating profile for the aerosol generators such that during a session of use the average operating temperature of the aerosol generators is T1. The controller may also be operable in a second mode of operation to set a second different heating profile for the aerosol generators such that during a session of use the average operating temperature of the aerosol generators is also T1.

1 . An aerosol provision device for generating aerosol from aerosol generating material, wherein the aerosol provision device comprises:
 one or more aerosol generators arranged to cause aerosol to be generated from the aerosol generating material; and   a controller for controlling the one or more aerosol generators;   wherein the controller is operable in a first mode of operation to set a first heating profile for the one or more aerosol generators such that during a session of use the average operating temperature of the one or more aerosol generators is T1; and   wherein the controller is operable in a second mode of operation to set a second different heating profile for the one or more aerosol generators such that during a session of use the average operating temperature of the one or more aerosol generators is also T1.   
     
     
         2 . (canceled) 
     
     
         3 . An aerosol provision device as claimed in  claim 1 , wherein the first and second heating profiles are mirror images of each other. 
     
     
         4 . An aerosol provision device as claimed in  claim 1 , wherein the first heating profile has a first maximum operating temperature and the second heating profile has a second different maximum operating temperature. 
     
     
         5 . An aerosol provision device as claimed in  claim 1 , wherein the first heating profile is stepped upwards as a function of time and the second heating profile is stepped downwards as a function of time. 
     
     
         6 . (canceled) 
     
     
         7 . An aerosol provision device as claimed in  claim 1 , wherein the session of use comprises at least a first time period t1 and at least a second subsequent time period t2, wherein in either the first mode of operation and/or in the second mode of operation during the first time period t1 the controller is arranged to set a first maximum temperature T 1max  for the one or more aerosol generators and wherein during the second time period t2 the controller is arranged to set a second maximum temperature T 2max  for the one or more aerosol generators, wherein either: (i) T 1max >T 2max ; or (ii) T 1max <T 2max . 
     
     
         8 . An aerosol provision device as claimed in  claim 1 , wherein the session of use comprises at least a first time period t1, at least a second subsequent time period t2 and at least a third yet further time period t3, wherein in either the first mode of operation and/or in the second mode of operation during the first time period t1 the controller is arranged to set a first maximum temperature T 1max , during the second time period t2 the controller is arranged to set a second maximum temperature T 2max  and wherein during the third time period t3 the controller is arranged to set a third maximum temperature T 3max  wherein either: (i) T 1max >T 2max >T 3max ; (ii) T 1max >T 2max <T 3max ; (iii) T 1max <T 2max >T 3max ; or (iv) T 1max <T 2max <T 3max . 
     
     
         9 . An aerosol provision device as claimed in  claim 1 , wherein the first heating profile has a first duration D1 and the second heating profile has a second different duration D2. 
     
     
         10 . (canceled) 
     
     
         11 . (canceled) 
     
     
         12 . (canceled) 
     
     
         13 . An aerosol provision device for generating aerosol from aerosol generating material, wherein the aerosol provision device comprises:
 one or more aerosol generators arranged to cause aerosol to be generated from the aerosol generating material; and   a controller;   wherein the controller is operable in a first mode of operation to set a first heating profile for the one or more aerosol generators during a first session of use wherein the operating temperature of the one or more aerosol generators is increased to a temperature T2 during a first time period, then decreased to a temperature T3 during a second time period and then increased to a temperature T4 during a third time period;   wherein the controller is operable in a second mode of operation to set a second heating profile for the one or more aerosol generators during a second session of use wherein the operating temperature of the one or more aerosol generators is increased to a temperature T5 during a first time period, then further increased to a higher temperature T6 during a second time period and then yet further increased to a yet higher temperature T7 during a third time period; and   wherein the controller is operable in a third mode of operation to set a third heating profile for the one or more aerosol generators during a third session of use wherein the operating temperature of the one or more aerosol generators is increased to a temperature T8 during a first time period, then decreased to a lower temperature T9 during a second time period and then yet further decreased to a yet lower temperature T10 during a third time period.   
     
     
         14 . (canceled) 
     
     
         15 . (canceled) 
     
     
         16 . An aerosol provision device as claimed in  claim 13 , wherein the first session of use has a duration D1, the second session of use has a duration D2 and the third session of use has a duration D3, wherein either: (i) D1=D2=D3; (ii) D1=D2≠D3; (iii) D1≠D2=D3; (iv) D1=D3≠D2; or (v) D1≠D2≠D3. 
     
     
         17 . An aerosol provision device for generating aerosol from aerosol generating material, wherein the aerosol provision device comprises:
 one or more aerosol generators arranged to cause aerosol to be generated from the aerosol generating material; and   a controller for controlling the one or more aerosol generators;   wherein the controller is operable in a first mode of operation to set a first heating profile for the one or more aerosol generators such that during a session of use the average operating temperature of the one or more aerosol generators is T1; and   wherein the controller is operable in a second mode of operation to set a second heating profile for the one or more aerosol generators, wherein the second heating profile corresponds to the first heating profile but additionally includes one or more adjustment periods such that during a session of use the average operating temperature of the one or more aerosol generators is T2, wherein T1 and T2 are different.   
     
     
         18 . An aerosol provision device as claimed in  claim 1 , wherein the one or more aerosol generators comprise one or more induction heating units. 
     
     
         19 . An aerosol provision device as claimed in  claim 1 , wherein the one or more aerosol generators comprise one or more resistive or non-induction heating units. 
     
     
         20 . An aerosol provision device as claimed in  claim 1 , wherein the one or more aerosol generators comprise one or more external heating units. 
     
     
         21 . (canceled) 
     
     
         22 . (canceled) 
     
     
         23 . (canceled) 
     
     
         24 . (canceled) 
     
     
         25 . An aerosol provision device as claimed in  claim 1 , wherein a session of use is determined to begin when power or energy is first supplied to the one or more aerosol generators after an aerosol generating article has been inserted into the aerosol provision device. 
     
     
         26 . An aerosol provision device as claimed in  claim 1 , wherein a session of use is determined to begin when power or energy is first supplied to the one or more aerosol generators in order to raise the temperature of the one or more aerosol generators to an operating temperature Tmin such that a user can take a first puff of aerosol generated from the aerosol generating material. 
     
     
         27 . (canceled) 
     
     
         28 . An aerosol provision device as claimed in  claim 1 , wherein a session of use is determined to end when power or energy is no longer supplied to the one or more aerosol generators. 
     
     
         29 . An aerosol provision device as claimed in  claim 1 , wherein a session of use is determined to end when the aerosol generating material is substantially spent or wherein a user is unable to take further puffs of aerosol generated from the aerosol generating material. 
     
     
         30 . An aerosol provision device as claimed in  claim 1 , wherein a session of use is determined to relate to a period of time during which a user is enabled to take multiple puffs of aerosol generated from aerosol generating material without replacement or replenishment of the aerosol generating material. 
     
     
         31 . An aerosol generating system comprising:
 an aerosol provision device as claimed in  claim 1 ; and   an aerosol generating article comprising aerosol generating material.   
     
     
         32 . An aerosol generating system as claimed in  claim 31 , wherein the aerosol generating article is inserted, in use, into the aerosol provision device. 
     
     
         33 . (canceled) 
     
     
         34 . (canceled) 
     
     
         35 . (canceled)