Aerosol generating substrate and aerosol generating article

Abstract

An aerosol generating substrate includes: a plurality of airway holes internally formed. Each airway hole of the plurality of airway holes penetrates through at least one end of the aerosol generating substrate in a length direction. The plurality of airway holes are formed in the aerosol generating substrate in a uniformly distributed manner.

What is claimed is: 
     
         1 . An aerosol generating substrate, comprising:
 a plurality of airway holes internally formed,   wherein each airway hole of the plurality of airway holes penetrates through at least one end of the aerosol generating substrate in a length direction, and   wherein the plurality of airway holes are formed in the aerosol generating substrate in a uniformly distributed manner.   
     
     
         2 . The aerosol generating substrate of  claim 1 , wherein each airway hole penetrates through two opposite ends of the aerosol generating substrate in the length direction, and
 wherein, in a plane perpendicular to the length direction of the aerosol generating substrate, a shape of a cross section of the aerosol generating substrate is circular.   
     
     
         3 . The aerosol generating substrate of  claim 1 , wherein all airway holes of the plurality of airway holes are distributed on a plurality of track lines,
 wherein each airway hole on a single track line of the plurality of track lines is in linear arrangement in a first direction,   wherein the plurality of track lines are distributed in a second direction, and   wherein the first direction is not parallel to the second direction.   
     
     
         4 . The aerosol generating substrate of  claim 3 , wherein each airway hole on the single track line is equidistant and is in repeated arrangement. 
     
     
         5 . The aerosol generating substrate of  claim 3 , wherein each airway hole on the single track line is arranged in a circumference direction around a center of the aerosol generating substrate, and
 wherein the plurality of track lines are arranged in a concentric circle manner in a radial direction of the aerosol generating substrate.   
     
     
         6 . The aerosol generating substrate of  claim 3 , wherein each airway hole on the single track line is in linear arrangement in the first direction,
 wherein the plurality of track lines are parallelly distributed in the second direction, and   the first direction is perpendicular to the second direction.   
     
     
         7 . The aerosol generating substrate of  claim 6 , wherein the plurality of airway holes are in array distribution,
 wherein a quantity of airway holes in the first direction is the same as a quantity of airway holes in the second direction,   wherein each airway hole on the single track line is equidistant, and   wherein a distance between every two track lines of the plurality of track lines is identical.   
     
     
         8 . The aerosol generating substrate of  claim 3 , wherein a quantity of the plurality airway holes on the single track line is 2 to 20, and
 wherein a quantity of the plurality of track lines is 2 to 20.   
     
     
         9 . The aerosol generating substrate of  claim 1 , wherein, in a plane perpendicular to the length direction of the aerosol generating substrate, a cross section of the plurality of airway holes is a circular shape, an elliptical shape, a racetrack shape, a polygonal shape, or a fan shape. 
     
     
         10 . The aerosol generating substrate of  claim 1 , wherein airway slots are formed in an outer side wall of the aerosol generating substrate, and
 wherein the airway slots penetrate through at least one end of the aerosol generating substrate in the length direction.   
     
     
         11 . The aerosol generating substrate of  claim 10 , wherein, in a plane perpendicular to the length direction of the aerosol generating substrate, a shape of a cross section of the airway slots is the same as a local shape of the plurality of airway holes, or
 wherein, in a plane perpendicular to the length direction of the aerosol generating substrate, a cross section of the airway slots is a V shape, an arc shape, a rectangular shape, or a trapezoidal shape.   
     
     
         12 . The aerosol generating substrate of  claim 1 , wherein a cross section area of the plurality of airway holes is 0.0019 mm 2  to 30 mm 2 , or
 wherein a hydraulic diameter of the plurality of airway holes is 0.05 mm to 6 mm.   
     
     
         13 . The aerosol generating substrate of  claim 1 , wherein a wall thickness of a partition wall between adjacent airway holes of the plurality of airway holes is 10 μm to 800 μm. 
     
     
         14 . The aerosol generating substrate of  claim 1 , wherein a center line of at least one airway hole of the plurality of airway holes in the plurality of the airway holes in an extending direction is coincident with a central axis of the aerosol generating substrate in the length direction. 
     
     
         15 . The aerosol generating substrate of  claim 1 , wherein, in a plane perpendicular to the length direction of the aerosol generating substrate, a cross section of the aerosol generating substrate is an elliptical shape, a racetrack shape, or a polygonal shape. 
     
     
         16 . An aerosol generating article, comprising:
 the aerosol generating substrate of  claim 1 ;   a functional segment arranged at one end of the aerosol generating substrate in the length direction, the functional section comprising a filtering segment configured to filter aerosol; and   an outer wrapping layer wrapping around a peripheral exterior of the functional segment and the aerosol generating substrate.   
     
     
         17 . The aerosol generating article of  claim 16 , wherein the functional segment comprises a cooling segment, and
 wherein the cooling segment is positioned between the filtering segment and the aerosol generating substrate.