Aerosol generating substrate and aerosol generating product

Abstract

An aerosol generating substrate includes: a channel that extends through at least one end of the aerosol generating substrate along a length direction; and a plurality of micropores, the plurality of micropores being in communication with the channel. In an embodiment, the channel includes at least one airway hole. The at least one airway hole is disposed inside the aerosol generating substrate and extends through two opposite ends of the aerosol generating substrate along the length direction.

What is claimed is: 
     
         1 . An aerosol generating substrate, comprising:
 a channel that extends through at least one end of the aerosol generating substrate along a length direction; and   a plurality of micropores, the plurality of micropores being in communication with the channel.   
     
     
         2 . The aerosol generating substrate of  claim 1 , wherein the channel comprises at least one airway hole, and
 wherein the at least one airway hole is disposed inside the aerosol generating substrate and extends through two opposite ends of the aerosol generating substrate along the length direction.   
     
     
         3 . The aerosol generating substrate of  claim 2 , wherein the at least one airway hole has a cross-sectional area of 0.0019 mm 2  to 30 mm 2 , or
 wherein the at least one airway hole has a hydraulic diameter of 0.05 mm to 6 mm.   
     
     
         4 . The aerosol generating substrate of  claim 2 , wherein the at least one airway hole has a cross-sectional area of 0.007 mm 2  to 7.1 mm 2 , or
 wherein the at least one airway hole has a hydraulic diameter of 0.1 mm to 3 mm.   
     
     
         5 . The aerosol generating substrate of  claim 2 , wherein, in a plane perpendicular to the length direction of the aerosol generating substrate, a cross section of the at least one airway hole is at least one of: a circular shape, an elliptical shape, a race track shape, a polygonal shape, and a sector shape. 
     
     
         6 . The aerosol generating substrate of  claim 2 , wherein the at least one airway hole comprises a plurality of airway holes, the plurality of airway holes being in a plane perpendicular to the length direction of the aerosol generating substrate, and
 wherein at least one of the plurality of airway holes are distributed symmetrically by taking a center of the aerosol generating substrate as an original point, and the plurality of airway holes are distributed in mirror symmetry about a central axial plane of the aerosol generating substrate.   
     
     
         7 . The aerosol generating substrate of  claim 2 , wherein the at least one airway hole comprises a plurality of airway holes, and
 wherein, in a plane perpendicular to the length direction of the aerosol generating substrate, cross sections of the plurality of airway holes have a same shape and size.   
     
     
         8 . The aerosol generating substrate of  claim 1 , wherein the channel comprises an airway groove, and
 wherein the airway groove is disposed at a circumferential surface of the aerosol generating substrate.   
     
     
         9 . The aerosol generating substrate of  claim 8 , wherein the channel comprises an airway hole, the airway hole being disposed inside the aerosol generating substrate, and
 wherein, in a plane perpendicular to the length direction of the aerosol generating substrate, a shape of a cross section of the airway groove is the same as a local shape of the airway hole.   
     
     
         10 . The aerosol generating substrate of  claim 1 , wherein the plurality of micropores have a cross-sectional area of 0.7 nm 2  to 710 μm 2 , or
 wherein the plurality of micropores have a hydraulic diameter of 10 nm to 30 μm. 
 
     
     
         11 . The aerosol generating substrate of  claim 1 , wherein the plurality of micropores have a cross-sectional area of 1963 nm 2  to 20 μm 2 , or
 wherein the plurality of the micropores have a hydraulic diameter of 50 nm to 5 μm. 
 
     
     
         12 . The aerosol generating substrate of  claim 1 , wherein, in a plane perpendicular to the length direction of the aerosol generating substrate, a maximum size of a contour of the aerosol generating substrate is 4 mm to 10 mm. 
     
     
         13 . The aerosol generating substrate of  claim 1 , wherein, in a plane perpendicular to the length direction of the aerosol generating substrate, a maximum size of a contour of the aerosol generating substrate is 6 mm to 8.6 mm. 
     
     
         14 . The aerosol generating substrate of  claim 1 , wherein at least one of at least a portion of the channel extends linearly, and at least a portion of the channel extends curvilinearly. 
     
     
         15 . The aerosol generating substrate of  claim 1 , wherein the aerosol generating substrate comprises a particle aggregate, and
 wherein the plurality of micropores are formed between particles of the particle aggregate.   
     
     
         16 . The aerosol generating substrate of  claim 1 , wherein at least one of the aerosol generating substrate comprises an integrated structure, and a cross-sectional area of the channel is at least 20 times a cross-sectional area of the plurality of micropores. 
     
     
         17 . An aerosol generating product, comprising:
 the aerosol generating substrate of  claim 1 ;   a functional section, disposed at one end of the aerosol generating substrate along the length direction and including a filtering section for filtering aerosols; and   an outer wrapping layer, configured to wrap a circumferential outside of the functional section and the aerosol generating substrate.