Aerosol generating substrate and aerosol generating product

Abstract

An aerosol generating substrate includes: an airway that penetrates through at least one end of the aerosol generating substrate in a length direction. On a cross section perpendicular to the length direction of the aerosol generating substrate, a ratio of the total cross sectional area of the airway to a cross sectional area of the aerosol generating substrate is 5% to 95%.

What is claimed is: 
     
         1 . An aerosol generating substrate, comprising:
 an airway that penetrates through at least one end of the aerosol generating substrate in a length direction,   wherein, on a cross section perpendicular to the length direction of the aerosol generating substrate, a ratio of the total cross sectional area of the airway to a cross sectional area of the aerosol generating substrate is 5% to 95%.   
     
     
         2 . The aerosol generating substrate of  claim 1 , wherein the ratio is 40% to 85%. 
     
     
         3 . The aerosol generating substrate of  claim 1 , wherein the airway comprises at least one air hole arranged inside the aerosol generating substrate. 
     
     
         4 . The aerosol generating substrate of  claim 3 , wherein a cross section of the at least one air hole is circular, oval, sector, or polygonal. 
     
     
         5 . The aerosol generating substrate of  claim 3 , wherein the at least one air hole comprises a plurality of air holes, and
 wherein plurality of air holes are arranged in the aerosol generating substrate in a uniform distribution.   
     
     
         6 . The aerosol generating substrate of  claim 3 , wherein the at least one air hole comprises a plurality of air holes,
 wherein all air holes of the plurality of air holes are divided into a plurality of air hole units,   wherein the plurality of air holes in the plurality of air hole units are arranged in a first direction, and   wherein the plurality of air hole units are arranged in a second direction that intersects the first direction.   
     
     
         7 . The aerosol generating substrate of  claim 6 , wherein the plurality of air holes are arranged in a straight line in the first direction, and
 wherein the plurality of air hole units are arranged in a straight line in the second direction.   
     
     
         8 . The aerosol generating substrate of  claim 6 , wherein the plurality of air holes are arranged circumferentially in the first direction, and
 wherein the plurality of air hole units are arranged so as to be sleeved one by one in the second direction.   
     
     
         9 . The aerosol generating substrate of  claim 8 , wherein air holes in each air hole unit of the plurality of air hole units have a same hydraulic diameter, and
 wherein the hydraulic diameter of each of the air hole units increases or decreases from inside to outside.   
     
     
         10 . The aerosol generating substrate of  claim 8 , wherein partition walls between two adjacent air holes of the plurality of air holes in each air hole unit of the plurality of air hole units have a same thickness, and
 wherein a spacing between the air hole units increases or decreases from inside to outside.   
     
     
         11 . The aerosol generating substrate of  claim 3 , wherein the at least one airhole comprises a plurality of air holes,
 wherein the plurality of air holes are arranged in the aerosol generating substrate in a non-uniform distribution.   
     
     
         12 . The aerosol generating substrate of  claim 11 , wherein at least some air holes of the plurality of air holes are different in hydraulic diameter. 
     
     
         13 . The aerosol generating substrate of  claim 11 , further comprising:
 partition walls between at least some of two adjacent air holes of the plurality of air holes,   wherein the partition walls are different in thickness.   
     
     
         14 . The aerosol generating substrate of  claim 3 , further comprising:
 at least one first area; and   at least one second area,   wherein the at least one first are is configured for arranging the at least one air hole, and   wherein the at least one second area is not provided with the at least one air hole.   
     
     
         15 . The aerosol generating substrate of  claim 1 , wherein the airway comprises a groove, and
 wherein the groove is arranged in a circumferential surface of the aerosol generating substrate.   
     
     
         16 . The aerosol generating substrate of  claim 15 , wherein a cross section of the groove is semicircular, semi-oval, or polygonal. 
     
     
         17 . The aerosol generating substrate of  claim 1 , wherein the airway penetrates through two opposite ends of the aerosol generating substrate in the length direction. 
     
     
         18 . An aerosol generating product, comprising:
 the aerosol generating substrate of  claim 1 ;   a functional section, arranged at one end of the aerosol generating substrate in the length direction and includes a filtering section used for filtering an aerosol; and   an outer wrapping layer, configured to wrap a circumferential outside of the functional section and the aerosol generating substrate.   
     
     
         19 . The aerosol generating product of  claim 18 , wherein the functional section comprises a cooling section located between the filtering section and the aerosol generating substrate.