Atomizer and electronic atomization device

Abstract

An atomizer includes: a housing having a liquid storage space and a gas flow path therein; a liquid storage member arranged in the liquid storage space; an atomization core arranged in the housing and in fluid communication with the liquid storage member and the gas flow path; a first sealing member arranged on a side of the liquid storage member; and a first liquid absorbing member having an air outlet hole, the air outlet hole being a part of the gas flow path. The first sealing member is provided with at least one back-suction channel. The back-suction channel is in fluid communication with the liquid storage member and the first liquid absorbing member.

What is claimed is: 
     
         1 . An atomizer, comprising:
 a housing having a liquid storage space and a gas flow path therein;   a liquid storage member arranged in the liquid storage space;   an atomization core arranged in the housing and in fluid communication with the liquid storage member and the gas flow path;   a first sealing member arranged on a side of the liquid storage member; and   a first liquid absorbing member having an air outlet hole, the air outlet hole being a part of the gas flow path,   wherein the first sealing member is provided with at least one back-suction channel, and   wherein the back-suction channel is in fluid communication with the liquid storage member and the first liquid absorbing member.   
     
     
         2 . The atomizer of  claim 1 , wherein the gas flow path comprises an air outlet channel and an airflow channel, the atomization core is arranged in the airflow channel, and the air outlet channel is located downstream from the atomization core, and
 wherein the first sealing member is arranged on a side of the liquid storage member close to the air outlet channel and has a first vent hole in communication with the airflow channel, the first vent hole is a part of the gas flow path, the first liquid absorbing member is arranged on a surface of the first sealing member away from the liquid storage member, and the air outlet hole is in communication with the air outlet channel and the first vent hole.   
     
     
         3 . The atomizer of  claim 2 , wherein the back-suction channel comprises a first back-suction groove, a communication groove, and a second back-suction groove that are in communication in sequence,
 wherein the first back-suction groove is arranged on a surface of the first sealing member close to the first liquid absorbing member,   wherein the second back-suction groove is arranged on a surface of the first sealing member close to the liquid storage member, and   wherein the communication groove is arranged on a side wall of the first vent hole.   
     
     
         4 . The atomizer of  claim 3 , wherein the surface of the first sealing member away from the liquid storage member is provided with at least one third back-suction groove, the third back-suction groove being in communication with the at least one first back-suction groove, and the third back-suction groove being provided around the first vent hole, and/or
 wherein the surface of the first sealing member close to the liquid storage member is provided with at least one fourth back-suction groove, the fourth back-suction groove is in communication with the at least one second back-suction groove, and the fourth back-suction groove being provided around the first vent hole, and/or   wherein a side wall of the first vent hole is provided with at least one fifth back-suction groove, the fifth back-suction groove is in communication with the at least one communication groove, and the fifth back-suction groove extends in a circumferential direction of the first vent hole.   
     
     
         5 . The atomizer of  claim 3 , wherein a width of at least one of the first back-suction groove, the communication groove, and the second back-suction groove is in a range of 0.1-2 mm, and a depth thereof is in a range of 0.1-2 mm. 
     
     
         6 . The atomizer of  claim 2 , wherein a diameter of the airflow channel is greater than a diameter of the air outlet channel, and
 wherein a diameter of the first vent hole decreases in a direction from the liquid storage member to the first liquid absorbing member.   
     
     
         7 . The atomizer of  claim 2 , further comprising:
 a second sealing member arranged on an end of the liquid storage member away from the first sealing member and having a second vent hole; and   a second liquid absorbing member arranged on a surface of the second sealing member away from the liquid storage member and having an avoidance hole, the avoidance hole being in communication with the second vent hole and a part of the gas flow path,   wherein a surface of the second sealing member close to the liquid storage member has at least one sixth back-suction groove, and/or a surface of the second sealing member away from the liquid storage member has at least one seventh back-suction groove.   
     
     
         8 . The atomizer of  claim 1 , wherein a liquid guide rate of the liquid storage member is greater than a liquid guide rate of the first liquid absorbing member, and/or
 wherein a proportion of a liquid injection amount of the liquid storage member to a total amount of an aerosol-forming material to be accommodated in a liquid storage member is less than 75%.   
     
     
         9 . An electronic atomization device, comprising:
 the atomizer of  claim 1 ; and   a power supply assembly electrically connected to the atomizer and configured to supply energy to the atomizer.   
     
     
         10 . The electronic atomization device of  claim 9 , wherein a power of the atomization core of the atomizer is in a range of 14-30 W, and/or
 wherein an atomization amount of the atomizer for a single puff is in a range of 10-24 mg/puff.   
     
     
         11 . An electronic atomization device, comprising:
 the atomizer of  claim 2 ; and   a power supply assembly electrically connected to the atomizer and configured to supply energy to the atomizer.   
     
     
         12 . An electronic atomization device, comprising:
 the atomizer of  claim 3 ; and   a power supply assembly electrically connected to the atomizer and configured to supply energy to the atomizer.   
     
     
         13 . An electronic atomization device, comprising:
 the atomizer of  claim 4 ; and   a power supply assembly electrically connected to the atomizer and configured to supply energy to the atomizer.   
     
     
         14 . An electronic atomization device, comprising:
 the atomizer of  claim 5 ; and   a power supply assembly electrically connected to the atomizer and configured to supply energy to the atomizer.   
     
     
         15 . An electronic atomization device, comprising:
 the atomizer of  claim 6 ; and   a power supply assembly electrically connected to the atomizer and configured to supply energy to the atomizer.   
     
     
         16 . An electronic atomization device, comprising:
 the atomizer of  claim 7 ; and   a power supply assembly electrically connected to the atomizer and configured to supply energy to the atomizer.   
     
     
         17 . An electronic atomization device, comprising:
 the atomizer of  claim 8 ; and   a power supply assembly electrically connected to the atomizer and configured to supply energy to the atomizer.