Aerosol provision device

Abstract

An aerosol provision device (2) is disclosed comprising a mouthpiece (26) having one or more variable chokes, one or more variable air inlet members or one or more valve members (901).

1 . An aerosol provision device comprising a mouthpiece having one or more variable chokes, one or more variable air inlet members or one or more valve members. 
     
     
         2 . An aerosol provision device as claimed in  claim 1 , wherein the one or more variable chokes, one or more variable air inlet members or one or more valve members are arranged to vary a flow of air into the mouthpiece so as to vary the aerosolisation of an aerosol or the air to aerosol ratio of a mixture of air and aerosol passing to the mouthpiece. 
     
     
         3 . An aerosol provision device as claimed in  claim 1 , wherein the one or more variable chokes, one or more variable air inlet members or one or more valve members are arranged to vary a flow of aerosol away from the mouthpiece so as to vary the aerosolisation of an aerosol or the air to aerosol ratio of a mixture of air and aerosol passing to the mouthpiece. 
     
     
         4 . An aerosol provision device as claimed in  claim 1 , further comprising control circuitry, wherein the control circuitry is arranged to selectively control the one or more variable chokes, one or more variable air inlet members or one or more valve members: (i) in response to activation or deactivation of one or more heating elements; (ii) as a function of time; (iii) according to a predetermined timing profile; or (iv) according to one or more user determined settings. 
     
     
         5 . An aerosol provision device comprising: (i) one or more air inlets having one or more adjustable air inlets; and/or (ii) one or more air outlets having one or more adjustable air outlets. 
     
     
         6 . An aerosol provision device as claimed in  claim 5 , further comprising control circuitry, wherein the control circuitry is arranged to selectively control the one or more air inlets and/or the one or more air outlets: (i) in response to activation or deactivation of one or more heating elements; (ii) as a function of time; (iii) according to a predetermined timing profile; or (iv) according to one or more user determined settings. 
     
     
         7 . An aerosol provision device comprising:
 a mouthpiece having a user portion and one or more diverter portions for diverting aerosol away from the user portion, wherein the one or more diverter portions are operable in a first mode wherein a first volume V1 of aerosol or aerosol/air mixture is directed to the user portion and in a second mode a second volume V2 of aerosol or aerosol/air mixture is directed to the user portion, wherein V2<V1.   
     
     
         8 . An aerosol provision device as claimed in  claim 7 , further comprising control circuitry, wherein the control circuitry is arranged to selectively control the one or more diverter portions: (i) in response to activation or deactivation of one or more heating elements; (ii) as a function of time; (iii) according to a predetermined timing profile; or (iv) according to one or more user determined settings. 
     
     
         9 . An aerosol provision device as claimed in  claim 1, claim 5 or claim 7 , further comprising a chamber for receiving an aerosol generating article. 
     
     
         10 . An aerosol provision device as claimed in  claim 1, claim 5 or claim 7 , wherein the aerosol provision device further comprises one or more heating elements. 
     
     
         11 . An aerosol provision device as claimed in  claim 1, claim 5 or claim 7 , further comprising one or more aerosol generating regions and wherein one or more or each aerosol generating region comprises at least one air supply hole in fluid communication with an external atmosphere. 
     
     
         12 . An aerosol provision system comprising:
 an aerosol provision device as claimed in  claim 1, claim 5 or claim 7 ; and   an aerosol generating article comprising portions of aerosol generating material.   
     
     
         13 . An aerosol provision system as claimed in  claim 12 , wherein either: (i) each portion of aerosol generating material is substantially the same; or (ii) at least some of the portions of aerosol generating material are substantially different. 
     
     
         14 . An aerosol provision system as claimed in  claim 12 , wherein the aerosol generating article comprises a substantially planar aerosol generating article. 
     
     
         15 . An aerosol provision system as claimed in  claim 14 , wherein the planar aerosol generating article comprises a plurality of aerosol generating regions. 
     
     
         16 . An aerosol provision system as claimed in  claim 12 , wherein the aerosol generating article is located, in use, adjacent a plurality of heating elements. 
     
     
         17 . An aerosol provision system as claimed in  claim 12 , wherein the aerosol generating article is located, in use, so that one or more aerosol generating regions are located adjacent a heating element, wherein the aerosol generating article is rotated or moved relative to the heating element so that one or more aerosol generating regions are moved into proximity to the heating element. 
     
     
         18 . A method of generating an aerosol comprising:
 providing an aerosol provision device comprising a mouthpiece having one or more variable chokes, one or more variable air inlet members or one or more valve members; and   varying the one or more variable chokes, one or more variable air inlet members or one or more valve members so as to vary a flow of air into the mouthpiece and hence vary the aerosolisation of an aerosol or the air to aerosol ratio of a mixture of air and aerosol passing to the mouthpiece.   
     
     
         19 . A method of generating an aerosol comprising:
 providing an aerosol provision device comprising: (i) one or more air inlets having one or more adjustable air inlets; and/or (ii) one or more air outlets having one or more adjustable air outlets; and   varying the one or more air inlets and/or air outlets so as to vary a flow of air into and/or away from the mouthpiece and hence vary the aerosolisation of an aerosol or the air to aerosol ratio of a mixture of air and aerosol passing to the mouthpiece.   
     
     
         20 . A method of generating an aerosol comprising:
 providing a mouthpiece having a user portion and one or more diverter portions for diverting aerosol away from the user portion;   operating the one or more diverter portions in a first mode wherein a first volume V1 of aerosol or aerosol/air mixture is directed to the user portion; and   operating the one or more diverter portions in a second mode wherein a second volume V2 of aerosol/air mixture is directed to the user portion, wherein V2<V1.