Aerosol-generating apparatus

Abstract

An aerosol-generating apparatus is provided. The aerosol-generating apparatus includes a heating base and a heating member. The heating base has a heating cavity, the heating member is configured to accommodate and heat an aerosol-generating substrate, the heating member is disposed in the heating cavity. The heating member includes a first sidewall, a first airflow channel is formed between the first sidewall and the inner surface of the heating cavity. A protrusion is disposed on an inner surface of the first sidewall, the protrusion makes a second airflow channel formed between the first sidewall and the aerosol-generating substrate, and both the first airflow channel and the second airflow channel are led from the outside of the aerosol-generating apparatus to the bottom of the heating cavity.

What is claimed is: 
     
         1 . An aerosol-generating apparatus, comprising:
 a heating base having a heating cavity; and   a heating member configured to accommodate and heat an aerosol-generating substrate,   wherein the heating member is disposed in the heating cavity,   wherein the heating member comprises a first sidewall, and a first airflow channel is formed between the first sidewall and an inner surface of the heating cavity, and   wherein a protrusion is disposed on an inner surface of the first sidewall, the protrusion makes a second airflow channel formed between the first sidewall and the aerosol-generating substrate, and both the first airflow channel and the second airflow channel are led from the outside of the aerosol-generating apparatus to the bottom of the heating cavity.   
     
     
         2 . The aerosol-generating apparatus of  claim 1 , wherein the proportion of the area of the surface of the protrusion for contacting the aerosol-generating substrate to the area of the inner surface of the first sidewall is 5%-15%. 
     
     
         3 . The aerosol-generating apparatus of  claim 1 , wherein the maximum height of the protrusion is 2 mm-5 mm. 
     
     
         4 . The aerosol-generating apparatus of  claim 1 , wherein the first sidewall is disposed in a ring shape, and
 wherein the protrusion is spirally disposed on the inner surface of the first sidewall,
 a plurality of strip-shaped protrusions are disposed on the inner surface of the first sidewall at intervals in a circumferential direction, 
 a plurality of arcuate protrusions are disposed on the inner surface of the first sidewall at intervals in the circumferential direction, 
 a plurality of dotted protrusions are distributed in an array on the inner surface of the first sidewall, or 
 a plurality of annular protrusions are disposed on the inner surface of the first sidewall at intervals in an axial direction, and each annular protrusion has a groove or a through hole. 
   
     
     
         5 . The aerosol-generating apparatus of  claim 1 , wherein a first sidewall portion of the first sidewall is concave to form the protrusion. 
     
     
         6 . The aerosol-generating apparatus of  claim 1 , wherein the first sidewall is disposed in a ring shape, and the heating member is disposed coaxially with the heating base. 
     
     
         7 . The aerosol-generating apparatus of  claim 1 , wherein the heating base further comprises a second sidewall,
 wherein a first limiting member is disposed between the first sidewall and the second sidewall, and   wherein the first limiting member spaces the first sidewall from the second sidewall to form the first airflow channel between the first sidewall and the inner surface of the heating cavity.   
     
     
         8 . The aerosol-generating apparatus of  claim 7 , wherein an outer surface of the first sidewall protrudes to form the first limiting member, or
 wherein an inner surface of the second sidewall protrudes to form the first limiting member.   
     
     
         9 . The aerosol-generating apparatus of  claim 1 , wherein the heating base further comprises a second sidewall and a bottom wall,
 wherein the second sidewall and the bottom wall enclose to form the heating cavity,   wherein a third airflow channel is formed between the bottom wall and the aerosol-generating substrate, and   wherein the third airflow channel communicates with the first airflow channel and the second airflow channel.   
     
     
         10 . The aerosol-generating apparatus of  claim 9 , wherein a first limiting member is disposed between the first sidewall and the second sidewall, and
 wherein the first limiting member is configured to limit the heating member for the third airflow channel to communicate with the first airflow channel.   
     
     
         11 . The aerosol-generating apparatus of  claim 9 , wherein the first sidewall abuts against the bottom wall, and
 wherein an end of the first sidewall close to the bottom wall has an opening for the third airflow channel to communicate with the first airflow channel.   
     
     
         12 . The aerosol-generating apparatus of  claim 9 , wherein one of the bottom wall, the first sidewall, or the second sidewall is provided with a second limiting member, and
 wherein the second limiting member spaces the aerosol-generating substrate from the bottom wall to form the third airflow channel.