Adjustable Filter

Abstract

A vapour generating article includes a main body having a first end and a second end opposite the first end, the body arranged to contain a vapour generating material; a filter having a first end arranged as a mouthpiece portion and a second end opposite the first end arranged for attachment to the first end of the main body; an air inlet portion located at the second end of the filter. The air inlet portion includes at least one aperture to allow ambient air to enter the filter. The filter includes an adjuster configured to move relative to air inlet portion to adjust the cross-sectional area of the aperture to alter an airflow through the aperture. The second end of the filter is releasably attachable to the first end of the main body.

1 . A vapour generating article comprising:
 a main body having a first end and a second end opposite the first end, the body arranged to contain a vapour generating material;   a filter having a first end arranged as a mouthpiece portion and a second end opposite the first end arranged for attachment to the first end of the main body; and   an air inlet portion located at the second end of the filter, the air inlet portion comprising at least one aperture to allow ambient air to enter the filter;   wherein the filter comprises an adjuster configured to move relative to air inlet portion to adjust the cross-sectional area of the aperture to alter an airflow through the aperture; and   wherein the second end of the filter is releasably attachable to the first end of the main body.   
     
     
         2 . The vapour generating article according to  claim 1 , wherein the adjuster comprises at least one aperture and wherein movement of the adjuster aperture relative to the air inlet portion aperture adjusts the cross sectional area of the aperture. 
     
     
         3 . The vapour generating article according to  claim 1 , wherein the adjuster is configured to adjust the cross-sectional area of the air inlet portion aperture to an open configuration in which ambient air is able to flow into the air inlet via the air inlet portion aperture. 
     
     
         4 . The vapour generating article according to  claim 1 , wherein the adjuster is configured to adjust the cross-sectional area of the air inlet aperture to a closed configuration in which ambient air is not able to flow into the air inlet portion. 
     
     
         5 . The vapour generating article according to  claim 3 , wherein in the open configuration the air inlet portion aperture is arranged to be substantially coaxially aligned with the adjuster aperture, such that the air inlet portion aperture and the adjuster aperture are substantially overlapping with each other. 
     
     
         6 . The vapour generating article according to  claim 4 , wherein in the closed configuration the air inlet portion aperture is offset from the adjuster aperture, such that the air inlet portion aperture and the adjuster aperture do not overlap with each other. 
     
     
         7 . The vapour generating article according to  claim 1 , wherein the adjuster is configured to adjust the cross-sectional area of the air inlet aperture to a partially open configuration in which the air inlet portion aperture is arranged partially overlap with the adjuster aperture. 
     
     
         8 . The vapour generating article according to  claim 1 , wherein the adjuster comprises a rotatable element configured to rotate relative to the air inlet portion, wherein rotation of the rotatable element adjusts the cross-sectional area of the aperture. 
     
     
         9 . The vapour generating article according to  claim 1 , wherein the adjuster is arranged to receive the filter and surround the air inlet portion and further arranged to rotate relative to the filter. 
     
     
         10 . The vapour generating article according to  claim 1 , wherein the at least one aperture in the air inlet portion has a size and/or shape that is substantially the same as the size and/or shape of the at least one aperture in the adjuster has a substantially circular shape. 
     
     
         11 . The vapour generating article according to  claim 2 , wherein the adjuster comprises at least one aperture having a size and/or shape that is different than the size and/or shape of the at least one aperture in the air inlet portion. 
     
     
         12 . The vapour generating article according to  claim 1 , wherein the aperture in the air inlet portion is located in a side wall of the filter. 
     
     
         13 . The vapour generating article according to  claim 2 , wherein the air inlet portion comprises a plurality of apertures spaced around a side wall of the filter, and wherein the adjuster comprises a plurality of apertures. 
     
     
         14 . The vapour generating article according to  claim 13 , wherein each air inlet portion aperture has a corresponding adjuster aperture. 
     
     
         15 . A vapour generating system comprising:
 a vapour generating article according to  claim 1 ; and   a vapour generating device configured to receive the vapour generating article and generate a vapour from the vapour generating material.