Aerosol-generating system with replaceable mouthpiece

Abstract

The invention relates to an aerosol-generating system comprising a main unit and a replaceable mouthpiece. The main unit comprises a heating element for heating an aerosol-forming substrate. The mouthpiece comprising an outlet channel. The mouthpiece and the main unit have corresponding structural components with complementary geometrical shapes. When the mouthpiece is connected to the main unit, the corresponding structural components of the mouthpiece and the main unit define an inlet channel. The inlet channel and the outlet channel form an airflow path from an air inlet to an air outlet via the heating element.

1 . An aerosol-generating system comprising a main unit and a replaceable mouthpiece,
 the main unit comprising a cartridge for storing an aerosol-forming substrate, and a heating element for heating an aerosol-forming substrate;   the mouthpiece comprising an outlet channel;   wherein the mouthpiece and the main unit have corresponding structural components with complementary geometrical shapes;   wherein, when the mouthpiece is connected to the main unit, the corresponding structural components of the mouthpiece and the main unit define an inlet channel; and   wherein the inlet channel and the outlet channel form an airflow path from an air inlet to an air outlet via the heating element.   
     
     
         2 . The aerosol-generating system according to  claim 1 , wherein the airflow path is formed upon assembly of the main unit and the mouthpiece. 
     
     
         3 . The aerosol-generating system according to  claim 1 , wherein the cartridge is configured to be replaceable. 
     
     
         4 . The aerosol-generating system according to  claim 1 , wherein the airflow path is defined between the cartridge and the mouthpiece. 
     
     
         5 . The aerosol-generating system according to  claim 1 , wherein the cartridge has a tubular shape. 
     
     
         6 . The aerosol-generating system according to  claim 1 , wherein the cartridge defines a central channel. 
     
     
         7 . The aerosol-generating system according to  claim 6 , wherein the airflow path leads through the central channel of the cartridge. 
     
     
         8 . The aerosol-generating system according to  claim 6 , wherein the complementary structural components of the mouthpiece or the main unit comprise a hollow element that extends into the central channel of the cartridge. 
     
     
         9 . The aerosol-generating system according to  claim 1 , wherein the mouthpiece has an outer housing with a lateral surface and a proximal end. 
     
     
         10 . The aerosol-generating system according to  claim 9 , wherein the air inlet is arranged in the lateral surface of the outer housing of the mouthpiece. 
     
     
         11 . The aerosol-generating system according to  claim 1 , wherein the air inlet is arranged in a lateral surface of an outer housing of the main unit. 
     
     
         12 . The aerosol-generating system according to  claim 9 , wherein the air outlet is arranged at the proximal end of the mouthpiece.