Atomizer and electronic atomization device

Abstract

An atomizer and an electronic atomization device. The atomizer includes: a liquid storage portion defining a liquid storage cavity, configured to store a liquid substrate and having a proximal end and a distal end oppositely disposed, a first opening in communication with the liquid storage cavity being disposed at the proximal end, and a second opening in communication with the liquid storage cavity being disposed at the distal end; a suction nozzle assembly disposed at the proximal end of the liquid storage portion; an atomization element including a first capillary wick element and a heating element bonded to the first capillary wick element, and the first capillary wick element being disposed at the second opening and configured to transfer the liquid substrate to the heating element; and a second capillary wick element disposed at the proximal end of the liquid storage portion and at least partially closing the first opening.

What is claimed is: 
     
         1 . An atomizer for atomizing a liquid substrate to generate aerosol, the atomizer comprising:
 a liquid storage portion defining a liquid storage cavity, the liquid storage cavity being configured to store a liquid substrate, the liquid storage portion having a proximal end and a distal end that are oppositely disposed, a first opening in communication with the liquid storage cavity being disposed at the proximal end, and a second opening in communication with the liquid storage cavity being disposed at the distal end;   a suction nozzle assembly, disposed at the proximal end of the liquid storage portion;   an atomization element, the atomization element comprising a first capillary wick element and a heating element bonded to the first capillary wick element, and the first capillary wick element being disposed at the second opening and configured to transfer the liquid substrate to the heating element; and   a second capillary wick element disposed at the proximal end of the liquid storage portion and at least partially closing the first opening.   
     
     
         2 . The atomizer according to  claim 1 , wherein a surface of the second capillary wick element at least partially defines a capillary channel or a material of the second capillary wick element has a capillary channel therein, the capillary channel providing an air path for air exchange between external air and the liquid storage cavity. 
     
     
         3 . The atomizer according to  claim 2 , wherein the second capillary wick element is configured to be capable of adsorbing part of the liquid substrate and, providing, in a state of balance between external air pressure and air pressure of the liquid storage cavity, part of the liquid substrate to flow into the capillary channel to seal the air path; and when the external air pressure is greater than the air pressure of the liquid storage cavity, the liquid substrate in the capillary channel flows back to the second capillary wick element under an action of an air pressure difference, so as to open the air path. 
     
     
         4 . The atomizer according to  claim 1 , wherein the second capillary wick element is supported on the suction nozzle assembly. 
     
     
         5 . The atomizer according to  claim 4 , wherein the second capillary wick element comprises a first surface and a second surface opposite to each other, the first surface being in communication with the liquid storage cavity, and the second surface being in communication with an air outlet hole of the suction nozzle assembly. 
     
     
         6 . The atomizer according to  claim 1 , wherein the second capillary wick element comprises a first surface facing the liquid storage cavity, and the capillary channel extends to the first surface. 
     
     
         7 . The atomizer according to  claim 1 , wherein the atomizer further comprises a first sealing member configured to seal the first opening, the first sealing member being provided with a vent hole for air discharge from the liquid storage cavity, and the capillary channel being at least partially defined between an outer surface of the second capillary wick element and an inner surface of the vent hole. 
     
     
         8 . The atomizer according to  claim 7 , wherein the suction nozzle assembly further comprises a tubular body configured to support the second capillary wick element, a tail end of the tubular body extending into the vent hole, at least part of the second capillary wick element being located in the tubular body, a tube wall at the tail end of the tubular body being provided with a first notch, and the first notch, the first sealing member, and the second capillary wick element defining the capillary channel. 
     
     
         9 . The atomizer according to  claim 8 , wherein the tubular body comprises a first abutting portion, the first sealing member comprises a second abutting portion, and the second capillary wick element longitudinally abuts between the first abutting portion and the second abutting portion. 
     
     
         10 . The atomizer according to  claim 8 , wherein the tube wall of the tubular body is provided with at least one second notch spaced from the first notch, and a groove in communication with an inner wall of the liquid storage cavity and the second notch is formed on an outer surface of the first sealing member, so as to guide the liquid substrate adhered to the inner wall to the second capillary wick element. 
     
     
         11 . The atomizer according to  claim 10 , wherein a plurality of second notches are provided, the plurality of second notches being arranged symmetrically about the first notch. 
     
     
         12 . The atomizer according to  claim 9 , wherein the second capillary wick element is made of a cotton fiber, the cotton fiber having a thickness of 1.2 mm to 2 mm. 
     
     
         13 . The atomizer according to  claim 8 , wherein an air guide channel is defined between the first sealing member and the tubular body, the air guide channel being in communication with the capillary channel and the external air, and an inner diameter of the air guide channel is greater than that of the capillary channel. 
     
     
         14 . The atomizer according to  claim 13 , wherein a bottom wall of the first notch is configured to be inclined. 
     
     
         15 . A suction nozzle assembly, applied to an electronic atomization device, the electronic atomization device being configured to atomize a liquid to generate aerosol, the suction nozzle assembly comprising:
 an air outlet hole providing an exit through which the aerosol escapes from the electronic atomization device; and   a second capillary wick element, a surface of the second capillary wick element at least partially defining a capillary channel or a material of the second capillary wick element having a capillary channel therein, the capillary channel providing an air path for air exchange between external air and a liquid storage cavity of the electronic atomization device.   
     
     
         16 . An electronic atomization device comprising:
 the atomizer according to  claim 1 ; and   a power supply assembly configured to provide electric energy for the atomizer.