Atomizer and electronic cigarette comprising the same

Abstract

An atomizer includes an e-liquid tank, an atomizing core, and an isolation member. The e-liquid tank includes an e-liquid chamber and the atomizing core includes an at least one e-liquid inlet. The at least one e-liquid inlet communicates with the e-liquid chamber. The isolation member is disposed around and movable with respect to the atomizing core, and is configured to close the at least one e-liquid inlet. The isolation member comprises a pull rod configured to drag the isolation member to slide away from the at least one e-liquid inlet.

What is claimed is: 
     
         1 . An atomizer, comprising:
 an e-liquid tank;   an atomizing core; and   an isolation member;   
       wherein:
 the e-liquid tank comprises an e-liquid chamber and the atomizing core comprises an at least one e-liquid inlet; 
 the at least one e-liquid inlet communicates with the e-liquid chamber; 
 the isolation member is disposed around and movable with respect to the atomizing core, and is configured to close the at least one e-liquid inlet; 
 the isolation member comprises a pull rod configured to drag the isolation member to slide away from the at least one e-liquid inlet. 
 
     
     
         2 . The atomizer of  claim 1 , wherein the atomizer comprises an air channel; a first end of the pull rod is disposed outside the air channel, and a second end of the pull rod is disposed in the atomizer to seal the air channel. 
     
     
         3 . The atomizer of  claim 2 , wherein the first end of the pull rod comprises a cap portion formed integrally with or connected to the isolation member; a junction between the isolation member and the cap portion comprises a gouge that facilitates pulling the pull rod out from the isolation member. 
     
     
         4 . The atomizer of  claim 3 , wherein
 the atomizing core comprises an atomizing tube; the isolation member is hollow and disposed around the atomizing tube; the cap portion is formed integrally with or connected to a first end of the isolation member to seal the isolation member; and the gouge is disposed between the cap portion and the first end of the isolation member; or   the isolation member is in the shape of a sheet; the isolation member is disposed around the atomizing tube to seal the at least one e-liquid inlet.   
     
     
         5 . The atomizer of  claim 4 , wherein the atomizing tube comprises a guide part configured to guide the isolation member to slide along a preset path. 
     
     
         6 . The atomizer of  claim 4 , wherein the isolation member comprises a limiting portion configured to guide the isolation member to slide only within a certain limited range in the atomizer. 
     
     
         7 . The atomizer of  claim 6 , wherein the isolation member comprises an outer wall and a lubricating portion protruding radially from the outer wall. 
     
     
         8 . The atomizer of  claim 7 , wherein
 the e-liquid tank further comprises an open top functioning as a mouthpiece; the e-liquid tank further comprises an air conduction tube extending upward to communicate with the mouthpiece; the isolation member is in the form of a hollow cylinder and comprises a first sleeve and a second sleeve; the first sleeve has a reduced diameter than the second sleeve; the second sleeve comprises a proximal end near the first sleeve and a flange disposed on the proximal end; the flange is configured to abut against the air conduction tube; the atomizing tube comprises a first tube and a second tube; the first tube has a reduced diameter than the second tube; the isolation member is disposed around the atomizing tube and is matched to the atomizing tube in shape and size; the first sleeve is disposed around the first tube and the second sleeve is disposed around the second tube; the at least one e-liquid inlet is disposed on the second tube; the second sleeve and the second tube are disposed in the e-liquid chamber; the first tube and the first sleeve are disposed into the air conduction tube; the air conduction tube comprises a bottom end away from the mouthpiece; the isolation member is slidable between the flange and the bottom end;   the isolation member comprises a first boss protruding radially from the outer wall; and   the flange functions as the limiting portion, or the first boss functions as the limiting portion, or the first boss protrudes radially from the flange, and the flange and the first boss constitute the limiting portion.   
     
     
         9 . The atomizer of  claim 8 , wherein
 the air conduction tube is configured to receive one end of the atomizing tube and one end of the isolation member; the lubricating portion is disposed between the isolation member and an inner wall of the air conduction tube; and   the lubricating portion is in the form of a gap, a lubricating layer, or a plurality of second bosses protruding from the outer wall of the isolation member; each of the plurality of second bosses comprises an edge abutting against the inner wall of the air conduction tube.   
     
     
         10 . The atomizer of  claim 8 , wherein the air conduction tube further comprises a groove disposed on the inner wall and configured to equalize a pressure in the e-liquid chamber with outside pressure; the air conduction tube further comprises a through hole and/or a notch communicating with the e-liquid chamber; the air conduction tube further comprises a seal member configured to seal the groove; the seal member is disposed on the isolation member and/or the pull rod; and the groove is opened when the seal member and/or the pull rod is pulled away from the groove. 
     
     
         11 . The atomizer of  claim 10 , wherein the seal member is a third boss that protrudes radially from the outer wall of the isolation member and/or the pull rod and is configured to seal at least one end of the groove. 
     
     
         12 . The atomizer of  claim 11 , wherein:
 one end of the inner wall of the air conduction tube is concave to form a first concave part and a first convex part; the first concave part extends from the first convex part to the bottom end of the air conduction tube;   the groove is disposed on the first concave part and extends to the bottom end of the air conduction tube; the third boss is disposed on the pull rod and abuts against the first convex part; the third boss is configured to seal one end of the groove; the plurality of second bosses is disposed between the third boss and the flange and abuts against the first concave part; or   one end of the inner wall of the air conduction tube is concave to form a first concave part and a first convex part; the first concave part extends from the first convex part to the bottom end of the air conduction tube; the groove is disposed on the inner wall of the air conduction tube above the first concave part; one end of the groove extends to the first convex part; the third boss is disposed on the outer wall of the isolation member and abuts against the first convex part; the third boss is configured to seal the other end of the groove; and the third boss is disposed between the flange and the plurality of second bosses; or   one end of the inner wall of the air conduction tube is concave to form a first concave part and a first convex part; the first concave part extends from the first convex part to the bottom end of the air conduction tube; the first concave part comprises a distal end away from the mouthpiece and the distal end is concave to form a second concave part and a second convex part; the groove is disposed on the first concave part and extends from the first convex part to the second convex part; the pull rod and the isolation element separately comprise the third boss protruding radially from the outer wall and abutting against the first convex part and the second convex part, respectively.   
     
     
         13 . The atomizer of  claim 8 , wherein the e-liquid tank further comprises a bottom open and a seal cover; the seal cover is disposed on the bottom open to seal the e-liquid chamber; the atomizing tube comprise a bottom end away from the mouthpiece and the bottom end is disposed into the seal cover; the atomizer comprises a heating element abutting against an edge of the at least one e-liquid inlet. 
     
     
         14 . The atomizer of  claim 11 , wherein the isolation member and the pull rod separately comprise silica gel, latex, rubber, or plastic; and/or
 at least one of the first boss, the plurality of second bosses, and the third boss closest to the mouthpiece is inclined downward and presents in a shape of a canopy.   
     
     
         15 . An electronic cigarette, comprising the atomizer of  claim 1  and a battery assembly.