Air inlet and liquid blocking structure, atomizer and aerosol generating device

Abstract

An aerosol generating device has an air inlet and liquid blocking structure, and an atomizer. The air inlet and liquid blocking member includes an air intake pipe and at least two groups of liquid blocking rib assemblies. The air intake pipe includes an opening end, a closed end, and an outer peripheral wall, the opening end is provided with an air inlet, the outer peripheral wall defines an air guiding hole. The liquid blocking rib assemblies are arranged at intervals along the axial direction of the intake pipe. Each group of liquid blocking rib assemblies includes at least one liquid blocking section protruding radially along the intake pipe and arranged along a circumferential direction. One or more dripping port O are defined between the liquid blocking sections located on the same circumference.

What is claimed is: 
     
         1 . An air inlet and liquid blocking structure, comprising
 an outer sleeve having an air outlet end facing the atomizing core, the air outlet end is provided with an air outlet hole communicating with the inner atomizing chamber of the atomizing assembly; and   an air inlet and liquid blocking member, set in the outer sleeve, and includes an air intake pipe and at least two groups of liquid blocking rib assemblies; the air intake pipe comprises an opening end and a closed end arranged along its axial direction, and an outer peripheral wall connected between the opening end and the closed end;   the opening end is provided with an air inlet connecting the outside world and the inner cavity of the air intake pipe, the outer peripheral wall defines an air guiding hole communicating between the inner cavity of the air intake pipe and the air outlet hole;   wherein, the liquid blocking rib assemblies are arranged at intervals along the axial direction of the intake pipe, each group of liquid blocking rib assemblies comprises at least one liquid blocking section protruding radially along the intake pipe and arranged along a circumferential direction. at least one dripping port O is defined between the liquid blocking sections located on the same circumference, the projections of the drip ports O in adjacent liquid-blocking rib groups along the axial direction of the intake pipe are staggered from each other; the drip ports O in the adjacent liquid resistance rib groups in the axial direction of the air intake pipe communicate with each other to form a drip channel.   
     
     
         2 . The air inlet and liquid blocking structure according to  claim 1 , wherein the drip opening formed in a group of liquid blocking rib assemblies adjacent to the air outlet hole and the projection of the air outlet hole along the axial direction of the air intake pipe are staggered from each other. 
     
     
         3 . The air inlet and liquid blocking structure according to  claim 1 , wherein the surface of the liquid blocking section of the group of liquid blocking rib assemblies adjacent to the air outlet hole facing the air outlet hole is a rough plane. 
     
     
         4 . The air inlet and liquid blocking structure according to  claim 1 , wherein the air outlet hole comprises a plurality of openings on the air outlet end, the closed end of the air intake pipe faces a plurality of air outlet holes, the projections of the multiple air outlet holes completely fall into the plane where the closed end is located. 
     
     
         5 . The air inlet and liquid blocking structure according to  claim 1 , wherein the air guiding hole is located between at least two groups of liquid blocking rib assemblies and the air inlet; the air guiding hole comprises a plurality of holes arranged along the circumference of the air intake pipe. 
     
     
         6 . The air inlet and liquid blocking structure according to  claim 1 , wherein the outer sleeve is made of metal material, the outlet hole of the outer sleeve is facing the heating surface of the atomizor. 
     
     
         7 . The air inlet and liquid blocking structure according to  claim 1 , wherein a sealing flange protrudes radially from the outer peripheral wall of the intake pipe adjacent to the opening end, the outer sleeve is hermetically fitted outside the sealing flange and surrounds the air guiding hole;
 wherein the gap between the inner tube wall of the outer sleeve and the liquid blocking section in each group of liquid blocking rib assemblies allows pressurized gas to flow into the atomizing chamber and prevents the fluid in the atomizing chamber a from flowing out to the outside.   
     
     
         8 . An atomizer comprising an atomization assembly with an atomizing chamber and the air inlet and liquid blocking structure according to  claim 1 . 
     
     
         9 . The atomizer according to  claim 8 , wherein the atomizing assembly comprises a base defining the atomizing chamber and an atomizing core provided in the atomizing chamber, the air inlet and liquid blocking structure is provided at the base and located below the atomizing core, the air outlet end of the outer casing with the air outlet hole extends into the atomizing chamber. 
     
     
         10 . An aerosol generating device, wherein the aerosol generating device comprises the atomizer according to  claim 9 .