Atomization core, atomizer, and electronic atomization device

Abstract

An atomization core includes: a liquid guiding element having a first surface and a second surface opposite each other, and a through hole running through the first surface and the second surface; a blocking member arranged on at least part of an inner wall surface of the through hole, and defining an air outlet channel or fitting with the part of the inner wall surface of the through hole to form an air outlet channel, a porosity of the blocking member being less than a porosity of the liquid guiding element; and a heating member arranged on the first surface of the liquid guiding element, the heating member atomizing an aerosol-forming material to form an aerosol. The aerosol flows out through the air outlet channel.

What is claimed is: 
     
         1 . An atomization core, comprising:
 a liquid guiding element having a first surface and a second surface opposite each other, and a through hole running through the first surface and the second surface;   a blocking member arranged on at least part of an inner wall surface of the through hole, and defining an air outlet channel or fitting with the part of the inner wall surface of the through hole to form an air outlet channel, a porosity of the blocking member being less than a porosity of the liquid guiding element; and   a heating member arranged on the first surface of the liquid guiding element, the heating member being configured to atomize an aerosol-forming material to form an aerosol,   wherein the aerosol flows out through the air outlet channel.   
     
     
         2 . The atomization core of  claim 1 , wherein the blocking member comprises a closed-loop covering layer or a sleeve tube, and
 wherein the blocking member covers an entire inner wall surface of the through hole and is enclosed to form the air outlet channel.   
     
     
         3 . The atomization core of  claim 2 , wherein the sleeve tube is nested in the through hole and is bonded to the inner wall surface of the through hole, and
 wherein the sleeve tube comprises a sleeve portion and a protruding portion that are axially connected, the sleeve portion covering the at least part of the inner wall surface of the through hole, the protruding portion protruding from the first surface of the liquid guiding element in an axial direction.   
     
     
         4 . The atomization core of  claim 3 , wherein, in the axial direction of the sleeve tube, a length of the protruding portion is greater than a length of the heating member. 
     
     
         5 . The atomization core of  claim 4 , wherein a thickness of the heating member is greater than or equal to 0.01 mm and less than or equal to 2 mm. 
     
     
         6 . The atomization core of  claim 4 , wherein, in the axial direction of the sleeve tube, a length of the protruding portion of the sleeve tube is not greater than 5 mm. 
     
     
         7 . The atomization core of  claim 1 , wherein the blocking member is in contact with the heating member. 
     
     
         8 . The atomization core of  claim 2 , wherein an aperture of the through hole is greater than or equal to 0.1 mm and less than or equal to 5 mm. 
     
     
         9 . The atomization core of  claim 2 , wherein a wall thickness of the blocking member is greater than or equal to 0.01 mm and less than or equal to 2 mm. 
     
     
         10 . The atomization core of  claim 1 , wherein a material of the blocking member comprises at least one of dense metal, dense ceramic, dense glass, and dense polymer. 
     
     
         11 . The atomization core of  claim 1 , wherein the heating member comprises a surrounding portion and two connecting portions,
 wherein the surrounding portion is arranged in a circumferential direction of the through hole and is serrated, and   wherein the two connecting portions are respectively connected to two ends of the surrounding portion and are electrically connected to an electrode.   
     
     
         12 . The atomization core of  claim 3 , wherein part of a side wall of the sleeve tube in the axial direction protrudes from the second surface of the liquid guiding element. 
     
     
         13 . An atomizer, comprising:
 a housing having a liquid storage chamber and an atomization chamber, the liquid storage chamber being configured to store an aerosol-forming material; and   the atomization core of  claim 1  arranged in the housing,   wherein the heating member and the air outlet channel are in direct communication with the atomization chamber.   
     
     
         14 . An electronic atomization device, comprising:
 the atomizer of claim  13 ; and   a power supply assembly electrically connected to the atomizer and configured to supply power to the atomization core.