Vaporizer and electronic vaporization device

Abstract

This application provides a vaporizer and an electronic vaporization device. The vaporizer includes a porous body, including a liquid channel running through the porous body in a length direction; a support frame, configured to accommodate and hold the porous body, where at least one air channel is provided on the support frame, the air channel includes an air inlet end and an air outlet end, and the air outlet end is close to the liquid channel; a flexible seal element, positioned between the support frame and the porous body, where the seal element includes a block portion that blocks or seals the air outlet end of the air channel, and the block portion is configured to bend or deform in response to a negative pressure change in the liquid storage cavity to open the air channel for external air to enter the liquid channel.

1 . A vaporizer, comprising:
 a liquid storage cavity, configured to store a liquid substrate;   a porous body, comprising a liquid channel running through the porous body in a length direction and being in fluid communication with the liquid storage cavity through the liquid channel to absorb the liquid substrate of the liquid storage cavity;   a heating element, combined with the porous body and configured to heat at least a part of the liquid substrate in the porous body to generate an aerosol;   a support frame, configured to hold the porous body, wherein at least one air channel is provided on the support frame, and the air channel comprises an air inlet end and an air outlet end close to the liquid channel; and   a flexible seal element, positioned between the support frame and the porous body, wherein the seal element comprises a block portion that blocks or seals the air outlet end, and the block portion is configured to bend or deform in response to a negative pressure change in the liquid storage cavity to open the air channel for air to enter the liquid channel.   
     
     
         2 . The vaporizer according to  claim 1 , wherein the support frame comprises a holding cavity, and the porous body is accommodated and held in the holding cavity; and
 the at least one air channel extends from an inner surface of the holding cavity to an outer surface of the support frame.   
     
     
         3 . The vaporizer according to  claim 1 , wherein the block portion is configured to be located between the liquid channel and the air channel. 
     
     
         4 . The vaporizer according to  claim 1 , wherein the at least one air channel is configured to extend in the length direction of the porous body. 
     
     
         5 . The vaporizer according to  claim 1 , wherein the block portion is suspended relative to other parts of the seal element. 
     
     
         6 . The vaporizer according to  claim 1 , wherein a notch or a slit is provided on the block portion; and the notch or the slit is configured to open or enlarge in response to the negative pressure change in the liquid storage cavity, thereby opening the air channel. 
     
     
         7 . The vaporizer according to  claim 1 , wherein a recessed structure is arranged on the block portion to reduce strength of the block portion, so that the block portion is easier to bend or deform. 
     
     
         8 . The vaporizer according to  claim 1 , wherein the porous body comprises a liquid absorbing surface adjacent to the liquid channel for absorbing the liquid substrate, and a vaporization surface for the aerosol to release and escape; and
 the vaporizer comprises a vaporization cavity that is in airflow communication with external air, wherein at least a part of the vaporization cavity is defined by the vaporization surface, and the air channel is in airflow communication with the vaporization cavity and then is in communication with the external air.   
     
     
         9 . The vaporizer according to  claim 2 , wherein the seal element is configured in the holding cavity and wraps at least a part of an outer surface of the porous body. 
     
     
         10 . The vaporizer according to  claim 1 , wherein the air outlet end of the air channel is configured to face the liquid channel. 
     
     
         11 . An electronic vaporization device, comprising a vaporizer for vaporizing a liquid substrate to generate an aerosol, and a power supply assembly for supplying power to the vaporizer, wherein the electronic vaporization device comprises the vaporizer according to  claim 1 . 
     
     
         12 . The vaporizer according to  claim 2 , wherein the block portion is configured to be located between the liquid channel and the air channel. 
     
     
         13 . The vaporizer according to  claim 2 , wherein the at least one air channel is configured to extend in the length direction of the porous body. 
     
     
         14 . The vaporizer according to  claim 2 , wherein the block portion is suspended relative to other parts of the seal element. 
     
     
         15 . The vaporizer according to  claim 2 , wherein a notch or a slit is provided on the block portion; and the notch or the slit is configured to open or enlarge in response to the negative pressure change in the liquid storage cavity, thereby opening the air channel. 
     
     
         16 . The vaporizer according to  claim 2 , wherein a recessed structure is arranged on the block portion to reduce strength of the block portion, so that the block portion is easier to bend or deform. 
     
     
         17 . The vaporizer according to  claim 2 , wherein the porous body comprises a liquid absorbing surface adjacent to the liquid channel for absorbing the liquid substrate, and a vaporization surface for the aerosol to release and escape; and
 the vaporizer comprises a vaporization cavity that is in airflow communication with external air, wherein at least a part of the vaporization cavity is defined by the vaporization surface, and the air channel is in airflow communication with the vaporization cavity and then is in communication with the external air.   
     
     
         18 . The vaporizer according to  claim 2 , wherein the air outlet end of the air channel is configured to face the liquid channel.