Atomizer and electronic atomization device

Abstract

An atomizer and an electronic atomization device are provided, The atomizer includes: a housing; a first sealing member, arranged inside the housing, and defining, with an inner wall of the housing, a liquid storage cavity used for storing a liquid substrate, a first opening used for guiding an airflow to pass through being defined on the first sealing member; a base configured to support the first sealing member; and an atomization element held on the first sealing member and configured to atomize the liquid substrate. The atomization element includes a porous body and a heating element integrated on the porous body. The porous body spans the first opening, and at least part of the porous body abuts against a surface of a side of the first sealing member facing the liquid storage cavity, to prevent the liquid substrate from entering the first opening through the liquid storage cavity.

1 . An atomizer comprising:
 a housing;   a first sealing member, arranged inside the housing, and defining, with an inner wall of the housing, a liquid storage cavity used for storing a liquid substrate, wherein a first opening used for guiding an airflow to pass through is defined on the first sealing member;   a base configured to support the first sealing member; and   an atomization element, held on the first sealing member and configured to atomize the liquid substrate to generate an aerosol,   wherein the atomization element comprises:   a porous body and a heating element integrated on the porous body, wherein the porous body spans the first opening, and at least part of the porous body abuts against a surface of a side of the first sealing member facing the liquid storage cavity, so as to prevent the liquid substrate from entering the first opening through the liquid storage cavity.   
     
     
         2 . The atomizer according to  claim 1 , wherein:
 the porous body comprises an atomization surface facing the first opening; and   the heating element is integrated on the atomization surface.   
     
     
         3 . The atomizer according to  claim 2 , wherein:
 the porous body comprises a plug-in portion receivable in the first opening; and   the atomization surface is located on the plug-in portion.   
     
     
         4 . The atomizer according to  claim 1 , wherein the porous body does not completely cover the first opening, so that the airflow passing through the first opening is configured to bypass the porous body. 
     
     
         5 . The atomizer according to  claim 4 , wherein the porous body spans two sides of a section of the first opening, and holds a first void and a second void with an inner wall of the first opening. 
     
     
         6 . The atomizer according to  claim 5 , wherein a sectional size of the first void is substantially the same as that of the second void. 
     
     
         7 . The atomizer according to  claim 1 , wherein:
 the first sealing member comprises a first abutting portion and a second abutting portion arranged opposite to the first abutting portion; and   the porous body is transversely positioned between the first abutting portion and the second abutting portion.   
     
     
         8 . The atomizer according to  claim 1 , further comprising a support frame, wherein the atomization element is clamped between the support frame and the base. 
     
     
         9 . The atomizer according to  claim 8 , wherein:
 the support frame has a holding space; and   at least part of the porous body is received in the holding space.   
     
     
         10 . (canceled) 
     
     
         11 . The atomizer according to  claim 8 , wherein:
 a first snap portion is arranged on the base;   a second snap portion is arranged on the support frame; and   the first snap portion is snap-fitted to the second snap portion.   
     
     
         12 . The atomizer according to  claim 8 , wherein:
 the first sealing member comprises a convex rib surrounding the first opening;   the porous body squeezes part of the convex rib; and   the support frame squeezes a remaining part of the convex rib.   
     
     
         13 . The atomizer according to  claim 8 , wherein:
 the atomizer further includes a second sealing member; and   the second sealing member is configured to seal an assembly clearance between the support frame and the porous body.   
     
     
         14 . The atomizer according to  claim 1 , wherein:
 the base comprises a first support plate and a second support plate arranged spaced away along a spanning direction of the porous body; and   the first support plate and the second support plate provide support for the first sealing member.   
     
     
         15 . The atomizer according to  claim 14 , wherein:
 the first support plate and the second support plate divide an inner cavity of the base into a first chamber, a second chamber, and a third chamber;   the second chamber is in communication with the first opening, and is constructed as an atomization chamber of the atomizer; and   the first chamber and the third chamber are distributed on two sides of the second chamber.   
     
     
         16 . The atomizer according to  claim 15 , wherein:
 a through hole is provided on at least one of the first support plate and the second support plate; and   the second chamber is in fluid communication with at least one of the first chamber and the third chamber through the through hole.   
     
     
         17 . The atomizer according to  claim 16 , wherein:
 the base comprises an air inlet tube extending toward the second chamber; and   a spacing between the through hole and a bottom wall of the second chamber is less than an extending length of the air inlet tube.   
     
     
         18 . The atomizer according to  claim 1 , wherein at least part of the porous body is immersed in the liquid storage cavity. 
     
     
         19 . The atomizer according to  claim 1 , wherein the atomizer comprises electrodes mounted to the base, and at least part of the electrodes extends into the first opening to abut against the heating element. 
     
     
         20 . The atomizer according to  claim 19 , wherein:
 each of the electrodes comprises a transversely extending power supply mechanism connection end, a heating element connection end extending obliquely toward the heating element, and a longitudinally extending connection portion connected between the power supply mechanism connection end and the heating element connection end;   the base comprises a first support plate and a second support plate arranged spaced away along a spanning direction of the porous body;   the first support plate and the second support plate provide support for the first sealing member;   the electrodes comprise a positive electrode and a negative electrode; and   a connection portion of the positive electrode and a connection portion of the negative electrode are respectively embedded in the first support plate and the second support plate.   
     
     
         21 . An electronic atomization device comprising:
 the atomizer according to  claim 1 ; and   a power supply mechanism configured to provide electric energy to the atomizer.