Airflow Path Arrangement to Pressure Sensor for an Aerosol Generating Device

Abstract

An aerosol generating device includes an outside casing containing a battery and having a receiving cavity for receiving an exchangeable cartomizer in a removable manner, a power and control interface connected to the battery and positioned in the receiving cavity for contacting with an electrical contact and air inlet interface of the cartomizer, wherein the power and control interface includes an airflow sensor and electrical contacts, wherein the power and control interface includes a deformable seal configured to delimit a flow path to the airflow sensor and wherein the power and control interface includes a non-deformable holder at least partially bordering a perimeter of the deformable seal in the receiving cavity.

1 . An aerosol generating device comprising:
 an outside casing containing a battery and comprising a receiving cavity for receiving an exchangeable cartomizer in a removable manner,   a power and control interface connected to the battery and positioned in the receiving for contacting with an electrical contact and air inlet interface of the cartomizer,   wherein the power and control interface comprises an airflow sensor and electrical contacts,   wherein the power and control interface comprises a deformable seal configured to delimit a flow path to the airflow sensor and wherein the power and control interface comprises a non-deformable holder configured for supporting the cartomizer in the receiving cavity; the holder at least partially bordering a perimeter of the deformable seal in the receiving cavity.   
     
     
         2 . The aerosol generating device according to  claim 1 , wherein the non-deformable holder defines an air throttling channel arranged for restricting air supplied to the flow path of the airflow sensor and to the cartomizer. 
     
     
         3 . The aerosol Aerosol generating device according to  claim 2 , wherein the air throttling channel extends transversally along the power and control interface, towards the flow path of the flow sensor. 
     
     
         4 . The aerosol generating device according to  claim 3 , wherein the air throttling channel is delimited by a pair of support edges of an outer surface of the non-deformable holder configured for defining a width of the air throttling channel. 
     
     
         5 . The aerosol generating device according to  claim 4 , wherein the air throttling channel communicates with the flow path of the airflow sensor by an enlarged outer cavity. 
     
     
         6 . The aerosol generating device according to  claim 5 , wherein the enlarged outer cavity is formed at the surface of the deformable seal. 
     
     
         7 . The aerosol generating device according to  claim 1 , wherein the non-deformable holder comprises an outer surface for supporting an outer surface of the electrical contact and air inlet interface of the cartomizer. 
     
     
         8 . The aerosol generating device according to  claim 2 , wherein the airflow sensor is positioned in an inner cavity of the deformable seal. 
     
     
         9 . The aerosol generating device according to  claim 1 , wherein the deformable seal comprises passages for the electrical contacts. 
     
     
         10 . The aerosol generating device according to  claim 1 , wherein the non-deformable holder comprises passages for a pair of holding magnets. 
     
     
         11 . The aerosol generating device according to  claim 1 , wherein the non-deformable holder comprises a transversal support wall for supporting an electronic circuit board for the electrical contacts and the airflow sensor. 
     
     
         12 . The aerosol generating device according to  claim 11 , wherein the deformable seal is positioned between the electronic circuit board and the receiving cavity. 
     
     
         13 . An aerosol generating system comprising an aerosol generating device according to  claim 1  and an atomizer comprising a vaporizing chamber and an air inlet positioned between the vaporizing chamber and the flow path of the airflow sensor. 
     
     
         14 . The aerosol generating system according to  claim 13 , wherein the cartomizer comprises a throttling air suction arrangement downstream of the air inlet. 
     
     
         15 . The aerosol generating system according to  claim 14 , wherein the non-deformable holder defines an air throttling channel arranged for restricting air supplied to the flow path of the airflow sensor and to the cartomizer, and wherein an air inlet interface of the atomizer forms with the deformable seal of the aerosol generating device an expansion chamber between the throttling air suction arrangement of the cartomizer and the air throttling channel of the aerosol generating device- 4004 .