Aerosol generating device

Abstract

An aerosol generating device is provided. The aerosol generating device includes: a body shaped to define an insertion space; a cartridge shaped to be coupled to the body; an exhaust port protruding from the cartridge and shaped to define an outlet; a connection passage extending from the insertion space and being sized to receive a portion of the exhaust port, wherein the connection passage permits communication between the insertion space and the exhaust port; and a backflow prevention membrane positioned to cover a portion of the connection passage and being structured to be deformed according to contact with the exhaust port in an insertion direction of the exhaust port.

What is claimed is: 
     
         1 . An aerosol generating device comprising:
 a body shaped to define an insertion space;   a cartridge shaped to be coupled to the body;   an exhaust port protruding from the cartridge and shaped to define an outlet;   a connection passage extending from the insertion space and being sized to receive a portion of the exhaust port, wherein the connection passage permits communication between the insertion space and the exhaust port; and   a backflow prevention membrane positioned to cover a portion of the connection passage and being structured to be deformed according to contact with the exhaust port in an insertion direction of the exhaust port.   
     
     
         2 . The aerosol generating device of  claim 1 , wherein the backflow prevention membrane is positionable at a first position and a second position,
 wherein the backflow prevention membrane is positioned at the first position based on the exhaust port being separated from the backflow prevention membrane, and the backflow prevention membrane is positioned at the second position according to the contact with the exhaust port.   
     
     
         3 . The aerosol generating device of  claim 2 , wherein the backflow prevention membrane is formed from a material having elasticity. 
     
     
         4 . The aerosol generating device of  claim 1 , wherein the backflow prevention membrane extends in a circumferential direction of the connection passage and is shaped to form a layer hole that permits communication between the connection passage and the exhaust port. 
     
     
         5 . The aerosol generating device of  claim 4 , wherein a diameter of the layer hole decreases in a direction extending from the exhaust port toward the connection passage based on the backflow prevention membrane being positioned at the second position. 
     
     
         6 . The aerosol generating device of  claim 5 , wherein a width of the layer hole when the backflow prevention membrane is positioned at the first position is less that a width of the layer hole when the backflow prevention membrane is positioned at the second position according to the contact with the exhaust port. 
     
     
         7 . The aerosol generating device of  claim 6 , wherein the backflow prevention membrane protrudes perpendicularly from a circumference of the connection passage when the backflow prevention membrane is positioned at the first position. 
     
     
         8 . The aerosol generating device of  claim 1 , wherein the exhaust port comprises an inclined surface that contacts the backflow prevention membrane, the inclined surface being inclined at an angle corresponding to an angle of slope of the backflow prevention membrane being deformed according to the contact with the exhaust port. 
     
     
         9 . The aerosol generating device of  claim 1 , further comprising a stopper positioned relative to the connection passage and being shaped to support a periphery of the exhaust port and limit an insertion depth of the exhaust port within the connection passage. 
     
     
         10 . The aerosol generating device of  claim 1 , wherein the backflow prevention membrane comprises:
 a first part protruding from an inner circumferential surface of the connection passage and configured to be deformed from the inner circumferential surface of the connection passage;   a second part extending from the first part in a tiltable manner; and   a layer hole formed by the first part and the second part,   wherein the first part faces an opening of the connection passage in a first position where the exhaust port is separated from the second part and is tilted such that an angle between the first part and a circumference of the connection passage increases toward a second position where the backflow prevention membrane contacts the exhaust port, and   wherein the second part faces the opening of the connection passage in the first position, and is formed such that an angle between the first part and the second part formed at an outside of the layer hole decreases toward the second position, and is tilted such that the layer hole gradually decreases in the insertion direction of the exhaust port.   
     
     
         11 . The aerosol generating device of  claim 10 , wherein the backflow prevention membrane comprises a third part protruding perpendicularly from the first part and surrounding a portion of the layer hole, and
 wherein the third part faces an inside of the layer hole when the backflow prevention membrane is positioned at the first position and faces the insertion direction of the exhaust port when the backflow prevention membrane is positioned at the second position.   
     
     
         12 . The aerosol generating device of  claim 10 , further comprising a supporter disposed at a downstream side relative to the first part, and protruding from the inner circumferential surface of the connection passage and being positioned to support the first part when the backflow prevention membrane is positioned at the second position. 
     
     
         13 . The aerosol generating device of  claim 1 , wherein the backflow prevention membrane protrudes from an inner circumferential surface of the connection passage. 
     
     
         14 . The aerosol generating device of  claim 1 , wherein the deforming of the backflow prevention membrane include titling of portions of the backflow prevention membrane relative to an initial position occurring prior to the contact with the exhaust port. 
     
     
         15 . The aerosol generating device of  claim 1 , wherein the cartridge is shaped to be coupled to a side of the body and the exhaust port protrudes from a side of the cartridge.