Aerosol provision device

Abstract

An aerosol provision device has a body, a heating assembly defining a heating chamber arranged to receive at least a portion of an article including aerosol generating material, and an air passage extending between the heating chamber and the air inlet. A check valve is arranged to selectably close the air passage from the air inlet to the heating chamber.

1 . An aerosol provision device comprising:
 a body,   a heating assembly defining a heating chamber arranged to receive at least a portion of an article comprising aerosol generating material,   an air passage extending between the heating chamber and the air inlet, and   a check valve arranged to selectably close the air passage from the air inlet to the heating chamber.   
     
     
         2 . The aerosol provision device of  claim 1 , wherein the check valve is openable in dependence on air flow along the air passage. 
     
     
         3 . The aerosol provision device of  claim 1 , wherein the check valve is a manual check valve. 
     
     
         4 . The aerosol provision device of  claim 1 , wherein the check valve is proximal to the air inlet. 
     
     
         5 . The aerosol provision device of  claim 1 , wherein the check valve is fluid impermeable in a closed condition. 
     
     
         6 . The aerosol provision device of  claim 1 , wherein the body comprises an opening and the check valve is proximal to the opening. 
     
     
         7 . The aerosol provision device of  claim 1 , wherein the check valve is at the opening. 
     
     
         8 . The aerosol provision device of  claim 6 , comprising an outer cover, wherein the outer cover covers the opening. 
     
     
         9 . The aerosol provision device of  claim 8 , wherein the check valve is on the outer cover. 
     
     
         10 . The aerosol provision device of  claim 8 , wherein the outer cover is separable from the body. 
     
     
         11 . The aerosol provision device of  claim 1 , wherein the check valve is arranged to act as a flow restrictor in the air passage in an open condition. 
     
     
         12 . The aerosol provision device of  claim 1 , wherein the heating assembly comprises a heating element arranged to heat the heating chamber. 
     
     
         13 . The aerosol provision device of  claim 12 , wherein the body comprises a tubular member defining at least part of the air passage. 
     
     
         14 . The aerosol provision device of  claim 13 , wherein the heating element is a primary heating element and the tubular member is a secondary heating element to heat air in the air passage. 
     
     
         15 . The aerosol provision device of  claim 14 , wherein the secondary heating element is arranged to be heated by the primary heating element. 
     
     
         16 . The aerosol provision device of  claim 15 , wherein the tubular member extends between the heating chamber and the opening. 
     
     
         17 . The aerosol provision device of  claim 1 , wherein the check valve is a duckbill valve. 
     
     
         18 . The aerosol provision device of  claim 1 , comprising an actuator arranged to actuate the check valve. 
     
     
         19 . An aerosol provision system comprising an aerosol provision device of  claim 1 , and an article containing aerosol generating material arranged to be at least partially received in the aerosol provision device. 
     
     
         20 . An outer cover for an aerosol provision device comprising:
 a check valve arranged to selectably close an air passage from an air inlet to a heating chamber.