Electronic atomization device

Abstract

An electronic atomization device includes: a top cover having a cap structure; a holder defining an atomization cavity with the top cover, and having a start airway, the cap structure being disposed at and covering one end of the start airway, a gap communicated with the atomization cavity being formed between the cap structure and a sidewall of the start airway; and a pneumatic sensing component communicated with an other end of the start airway. The pneumatic sensing component is communicated with the atomization cavity through the start airway and the gap.

What is claimed is: 
     
         1 . An electronic atomization device, comprising:
 a top cover having a cap structure;   a holder defining an atomization cavity with the top cover, and having a start airway, the cap structure being disposed at and covering one end of the start airway, a gap communicated with the atomization cavity being formed between the cap structure and a sidewall of the start airway; and   a pneumatic sensing component communicated with an other end of the start airway,   wherein the pneumatic sensing component is communicated with the atomization cavity through the start airway and the gap.   
     
     
         2 . The electronic atomization device of  claim 1 , wherein the cap structure comprises a top wall and an annular wall, the annular wall being connected to the top wall, the top wall covering a port of the start airway, and
 wherein the gap is formed between the annular wall and the sidewall of the start airway.   
     
     
         3 . The electronic atomization device of  claim 1 , wherein the cap structure comprises an annular wall,
 wherein the sidewall of the start airway is provided with a port communicated with the atomization cavity,   wherein the annular wall covers a port of the start airway, and   wherein the gap is formed between the annular wall and the sidewall of the start airway.   
     
     
         4 . The electronic atomization device of  claim 1 , further comprising:
 an atomization core connected to the top cover,   wherein the start airway is offset relative to the atomization core.   
     
     
         5 . The electronic atomization device of  claim 4 , wherein the holder comprises a base, the atomization cavity is defined between the base and the top cover, the base comprises a bottom part and a surrounding wall, the surrounding wall surrounds the bottom part, and the start airway is disposed on the surrounding wall, or
 wherein the base comprises an airway tube connected to the bottom part, and the airway tube is provided with the start airway.   
     
     
         6 . The electronic atomization device of  claim 5 , wherein the bottom part is provided with a liquid collection cavity, and
 wherein a port of the start airway communicated with the atomization cavity is higher than the liquid collection cavity.   
     
     
         7 . The electronic atomization device of  claim 5 , wherein the bottom part is provided with a second air inlet hole, and
 wherein the second air inlet hole is offset from the start airway and corresponds to the atomization core.   
     
     
         8 . The electronic atomization device of  claim 1 , wherein the holder comprises a base and a mounting holder disposed at one side of the base,
 wherein the base is provided with the start airway,   wherein the mounting holder is provided with a reflux prevention airway communicated with the start airway, and   wherein the pneumatic sensing component is communicated with the start airway through the reflux prevention airway.   
     
     
         9 . The electronic atomization device of  claim 8 , wherein the reflux prevention airway comprises a Tesla valve, and
 wherein a one-way flow direction defined by the Tesla valve is opposite to a guiding direction of the start airway from the atomization cavity to the pneumatic sensing component.   
     
     
         10 . The electronic atomization device of  claim 8 , wherein the mounting holder is provided with a pressure relief airway,
 wherein one end of the pressure relief airway is communicated with an end of the reflux prevention airway away from the start airway, and   wherein an other end of the pressure relief airway is communicated with the air.   
     
     
         11 . The electronic atomization device of  claim 10 , wherein the pressure relief airway comprises a capillary part and a pressure relief hole part, t
 wherein he capillary part is disposed between and communicated with the reflux prevention airway and the pressure relief hole part, and   wherein the pressure relief hole part is communicated with the air.   
     
     
         12 . The electronic atomization device of  claim 10 , further comprising:
 a seal member,   wherein the mounting holder is provided with an accommodating recess,   wherein the reflux prevention airway and the pressure relief airway are disposed on a bottom wall of the accommodating recess,   wherein the seal member is in interference fit with the accommodating recess so as to seal the reflux prevention airway and the pressure relief airway,   wherein the seal member is provided with a through hole, through hole being communicated with an end of the reflux prevention airway away from the start airway, and   wherein the pneumatic sensing component is disposed at a side of the seal member away from the reflux prevention airway and is communicated with the reflux prevention airway through the through hole.   
     
     
         13 . The electronic atomization device of  claim 12 , wherein the start airway is communicated with the accommodating recess,
 wherein a port of the reflux prevention airway is spaced apart from a port of the start airway,   wherein the bottom wall of the accommodating recess is provided with a liquid collection recess surrounding the reflux prevention airway, and   wherein the port of the start airway is communicated with the liquid collection recess.   
     
     
         14 . The electronic atomization device of  claim 12 , further comprising:
 a control component connected to the mounting holder and presses and the seal member,   wherein the pneumatic sensing component is electrically connected to a side of the control component away from the seal member,   wherein the control component is provided with a via hole, the via hole being correspondingly communicated with the through hole, and   wherein the pneumatic sensing component is communicated with the reflux prevention airway through the via hole and the through hole.   
     
     
         15 . The electronic atomization device of  claim 1 , further comprising:
 a liquid storage member, the holder comprising a base covering one end of the liquid storage member, the atomization cavity being defined between the base and the top cover; and   a shell sleeved on the outside of the liquid storage member and the base, the shell being provided with a first air inlet hole, or the shell and the liquid storage member jointly forming a first air inlet hole,   wherein the base is provided with a second air inlet hole communicated with the atomization cavity, the shell and the base jointly form an air inlet passage, or the shell, the liquid storage member, and the base jointly form an air inlet passage, and the air inlet passage is communicated with the first air inlet hole and the second air inlet hole, and   wherein the air inlet passage comprises at least two first airways, and a raised structure is disposed at a junction of two adjacent first airways of the at least two first airways, the raised structure being configured to divert, to the first airways of the at least two first airways on both sides, airflow entering from the first air inlet hole.   
     
     
         16 . The electronic atomization device of  claim 15 , wherein the raised structure comprises an arc-shaped structure, a triangular structure, or a spherical structure. 
     
     
         17 . The electronic atomization device of  claim 16 , wherein the raised structure comprises an arc-shaped structure, and
 wherein an outer wall surface of the arc-shaped structure facing the first air inlet hole comprises an arc surface, and   wherein two sides of the arc surface are respectively connected to sidewall surfaces of the two adjacent first airways.   
     
     
         18 . The electronic atomization device of  claim 17 , wherein a radius of the arc surface is greater than or equal to 0.5 mm and less than or equal to 3.0 mm. 
     
     
         19 . The electronic atomization device of  claim 17 , wherein a symmetry plane of the arc surface directly faces a center of the first air inlet hole. 
     
     
         20 . The electronic atomization device of  claim 15 , wherein a cross-sectional area of the first airway decreases in a flow direction from the first air inlet hole to the second air inlet hole. 
     
     
         21 . The electronic atomization device of  claim 20 , wherein the air inlet passage comprises a second airway,
 wherein the second air inlet hole is communicated with the second airway,   wherein an air inlet end of the second airway is communicated with an air outlet end of the first airway,   wherein a cross-sectional area of the air inlet end of the second airway is larger than a cross-sectional area of the air outlet end of the first airway, and   wherein the cross-sectional areas comprise cross-sectional areas in the flow direction from the first air inlet hole to the second air inlet hole.   
     
     
         22 . The electronic atomization device of  claim 21 , wherein a ratio of the cross-sectional area of the air inlet end of the second airway to a cross-sectional area of the air outlet end of the first airway is greater than or equal to 2.0. 
     
     
         23 . The electronic atomization device of  claim 21 , wherein the raised structure is disposed on the base, and the raised structure directly faces the first air inlet hole,
 wherein the shell and the base jointly form the first airway,   wherein the first airway is disposed on a periphery of an atomizer in an arc shape,   wherein each first airway is disposed around the second air inlet hole,   wherein the base is provided with the second airway,   wherein the second airway runs through the base, and   wherein each first airway is communicated with the second airway.   
     
     
         24 . The electronic atomization device of  claim 23 , wherein a quantity of first air inlet holes is more than one,
 wherein the raised structure is in one-to-one correspondence with the first air inlet hole, and   wherein a plurality of first airways are of a connected-ring shape around a periphery of the atomizer.   
     
     
         25 . The electronic atomization device of  claim 15 , wherein the shell and the liquid storage member jointly form the first airway, and
 wherein the raised structure is disposed on the liquid storage member or the shell.   
     
     
         26 . The electronic atomization device of  claim 25 , wherein the air inlet passage comprises an air inlet part,
 wherein the shell and the liquid storage member jointly form the air inlet part,   wherein the air inlet part is disposed between the first air inlet hole and the at least two first airways, and   wherein the raised structure directly faces the air inlet part.   
     
     
         27 . The electronic atomization device of  claim 26 , wherein a cross-sectional area of the first airway is larger than a cross-sectional area of the air inlet part. 
     
     
         28 . The electronic atomization device of  claim 25 , wherein the air inlet passage comprises an annular airway formed between the base and the shell and a second airway running through the base, the annular airway being disposed on a periphery of the electronic atomization device,
 wherein each first airway is communicated with the annular airway,   wherein the second airway is communicated with the annular airway, and   wherein the second air inlet hole is communicated with the second airway.   
     
     
         29 . The electronic atomization device of  claim 15 , wherein the first air inlet hole is an elliptical hole or a racetrack-shaped hole.