Aerosol generating device and heater

Abstract

An aerosol generating device, comprising: a chamber (30), that is for receiving a smokable material (A), the chamber having a first radial direction and a second radial direction that are perpendicular to one another; and a first infrared emitter (21) and a second infrared emitter (22) that are arranged along the first radial direction of the chamber, and that are used to radiate infrared rays to the chamber so as to heat the smokable material, the first infrared emitter and the second infrared emitter at least partially extending along the second radial direction, thereby defining the chamber between the first infrared emitter and the second infrared emitter, and such that the size of the chamber along the second radial direction is greater than that along the first radial direction. In the foregoing aerosol generating device, a first infrared emitter and a second infrared emitter are oppositely disposed and define and form a chamber the size of which is smaller along a first radial direction than that along a second radial direction, thereby increasing the ability and efficiency of absorbing infrared rays in a smokable material, such that a surface layer and the interior of the smokable material can be relatively uniformly heated.

What is claimed is: 
     
         1 . An aerosol generating device, configured to heat a smokable material to generate an aerosol for inhalation, comprising:
 a chamber, configured to receive a smokable material;   the chamber having a first radial direction, and a second radial direction that is perpendicular to the first radial direction; and   a first infrared emitter and a second infrared emitter that are arranged in the first radial direction of the chamber and configured to radiate infrared rays towards the chamber so as to heat the smokable material, the first infrared emitter and the second infrared emitter extending at least partially in the second radial direction, thereby defining the chamber between the first infrared emitter and the second infrared emitter, such that the size of the chamber in the second radial direction is greater than that in the first radial direction.   
     
     
         2 . The aerosol generating device according to  claim 1 , wherein the first infrared emitter and the second infrared emitter are separated from each other. 
     
     
         3 . The aerosol generating device according to  claim 1 , wherein the first infrared emitter and the second infrared emitter are spaced with certain distance, to form an airflow channel for external air to enter the chamber. 
     
     
         4 . The aerosol generating device according to any one of  claims 1  to  3 , wherein the first infrared emitter is configured to be able to move in the first radial direction relative to the second infrared emitter, to change the size of the chamber in the first radial direction. 
     
     
         5 . The aerosol generating device according to  claim 4 , wherein the first infrared emitter has a first position and a second position opposite to the second infrared emitter, and is able to move between the first position and the second position in the first radial direction relative to the second infrared emitter; wherein
 the size of the chamber in the first radial direction when the first infrared emitter is at the first position is less than the size of the chamber in the first radial direction when the first infrared emitter is at the second position.   
     
     
         6 . The aerosol generating device according to  claim 5 , further comprising a retaining mechanism, which is configured to stably retain the first infrared emitter at the first position and/or the second position. 
     
     
         7 . The aerosol generating device according to  claim 5 , further comprising a biasing element, which is configured to bias the first infrared emitter towards the second position. 
     
     
         8 . The aerosol generating device according to any one of  claims 1  to  3 , wherein the first infrared emitter and/or the second infrared emitter are/is configured as the shape of a sheet extending in the second radial direction. 
     
     
         9 . The aerosol generating device according to any one of  claims 1  to  3 , wherein the first infrared emitter and/or the second infrared emitter are/is configured as the shape of a curve bending outwards in the first radial direction of the chamber. 
     
     
         10 . The aerosol generating device according to any one of  claims 1  to  3 , wherein the first infrared emitter or the second infrared emitter comprises:
 a base; and, 
 an infrared emitting coating formed on a surface of the base or an infrared emitting film bonded to a surface of the base.