Atomizer and electronic atomization device

Abstract

This application provides an atomizer and an electronic atomization device. The atomizer includes a housing, and the housing is internally provided with: a liquid storage cavity; an atomization assembly; a sealing element; a holder, configured to support the sealing element; and an air channel, including a first channel portion formed between the side surface of the holder and the sealing element and a second channel portion formed between the upper surface of the holder and the sealing element, where the first channel portion has a cross-sectional area greater than that of the second channel portion. The atomizer can supplement air to the liquid storage cavity to relieve or balance the negative pressure in the liquid storage cavity through the air channel; and the air channel including a portion with a different cross-sectional area, is advantageous for air to overcome the pressure of a liquid substrate into the liquid storage cavity.

1 . An atomizer, comprising a housing, wherein the housing is internally provided with:
 a liquid storage cavity, configured to store a liquid substrate;   an atomization assembly, configured to atomize the liquid substrate to generate an aerosol;   a sealing element, configured to at least partially seal the liquid storage cavity;   a holder, configured to support the sealing element, so that the sealing element is at least partially positioned between the holder and the liquid storage cavity, wherein the holder comprises an upper surface close to the liquid storage cavity and a side surface surrounding the upper surface; and   an air channel, configured to provide a flow path for air to enter the liquid storage cavity, and comprising a first channel portion formed between the side surface of the holder and the sealing element and a second channel portion formed between the upper surface and the sealing element, wherein the first channel portion has a cross-sectional area greater than that of the second channel portion.   
     
     
         2 . The atomizer according to  claim 1 , wherein a first groove is provided on the side surface of the holder, and the first channel portion is defined and formed between the first groove and the sealing element. 
     
     
         3 . The atomizer according to  claim 2 , wherein a depth dimension of the first groove is greater than a width dimension. 
     
     
         4 . The atomizer according to  claim 1 , wherein the holder comprises a liquid guide channel, and the atomization assembly is in fluid communication with the liquid storage cavity through the liquid guide channel; and
 the second channel portion partially extends to an inner wall of the liquid guide channel and forms an air outlet end of the air channel on the inner wall of the liquid guide channel.   
     
     
         5 . The atomizer according to  claim 1 , wherein a second groove is provided on the upper surface of the holder, and the second channel portion is defined and formed between the second groove and the sealing element. 
     
     
         6 . The atomizer according to  claim 5 , wherein a width dimension of the second groove is greater than a depth dimension. 
     
     
         7 . The atomizer according to  claim 1 , wherein the first channel portion comprises an extending direction different from that of the second channel portion. 
     
     
         8 . The atomizer according to  claim 1 , wherein an extension length of the first channel portion is greater than an extension length of the second channel portion. 
     
     
         9 . The atomizer according to  claim 1 , wherein the sealing element at least partially covers the holder and exposes an air inlet end and/or an air outlet end of the air channel. 
     
     
         10 . The atomizer according to  claim 1 , wherein the sealing element comprises an interference fit region, used to provide sealing between the housing and the holder through an interference fit of a part of the region; and the first channel portion crosses interference fit region. 
     
     
         11 . The atomizer according to  claim 10 , wherein a convex rib at least partially surrounding the sealing element is arranged on the sealing element, and the convex rib defines the interference fit region. 
     
     
         12 . An electronic atomization device, comprising an atomizer configured to atomize a liquid substrate to generate an aerosol and a power supply mechanism configured to supply power to the atomizer, wherein the atomizer comprises the atomizer according to  claim 1 . 
     
     
         13 . The atomizer according to  claim 2 , wherein the holder comprises a liquid guide channel, and the atomization assembly is in fluid communication with the liquid storage cavity through the liquid guide channel; and
 the second channel portion partially extends to an inner wall of the liquid guide channel and forms an air outlet end of the air channel on the inner wall of the liquid guide channel.   
     
     
         14 . The atomizer according to  claim 3 , wherein the holder comprises a liquid guide channel, and the atomization assembly is in fluid communication with the liquid storage cavity through the liquid guide channel; and
 the second channel portion partially extends to an inner wall of the liquid guide channel and forms an air outlet end of the air channel on the inner wall of the liquid guide channel.   
     
     
         15 . The atomizer according to  claim 2 , wherein a second groove is provided on the upper surface of the holder, and the second channel portion is defined and formed between the second groove and the sealing element. 
     
     
         16 . The atomizer according to  claim 15 , wherein a width dimension of the second groove is greater than a depth dimension. 
     
     
         17 . The atomizer according to  claim 3 , wherein a second groove is provided on the upper surface of the holder, and the second channel portion is defined and formed between the second groove and the sealing element. 
     
     
         18 . The atomizer according to  claim 17 , wherein a width dimension of the second groove is greater than a depth dimension. 
     
     
         19 . The atomizer according to  claim 2 , wherein the first channel portion comprises an extending direction different from that of the second channel portion. 
     
     
         20 . The atomizer according to  claim 3 , wherein the first channel portion comprises an extending direction different from that of the second channel portion.