Aerosol generating device

Abstract

An aerosol generating device includes a heater assembly including an oscillator configured to generate microwaves, a shielding portion including an insertion space for accommodating an aerosol generating article, the shielding portion being configured to shield the microwaves, and a microwave output portion configured to provide the microwaves into the shielding portion, the heater assembly being configured to heat, through the microwaves, the aerosol generating article accommodated in the insertion space, one or more optical fiber temperature sensors configured to measure a temperature of an object of temperature measurement from outside the object of temperature measurement without being inserted into the object of temperature measurement, and a controller configured to adjust the microwaves, based on the temperature measured through the one or more optical fiber temperature sensors.

What is claimed is: 
     
         1 . An aerosol generating device comprising:
 a heater assembly comprising an oscillator configured to generate microwaves, a shielding portion comprising an insertion space for accommodating an aerosol generating article, the shielding portion being configured to shield the microwaves, and a microwave output portion configured to provide the microwaves into the shielding portion, the heater assembly being configured to heat, through the microwaves, the aerosol generating article accommodated in the insertion space;   one or more optical fiber temperature sensors configured to measure a temperature of an object of temperature measurement from outside the object of temperature measurement without being inserted into the object of temperature measurement; and   a controller configured to adjust the microwaves, based on the temperature measured through the one or more optical fiber temperature sensors.   
     
     
         2 . The aerosol generating device of  claim 1 , wherein each of the one or more optical fiber temperature sensors is configured to measure, through one end, the temperature of the object of temperature measurement, and
 the one end of each of the one or more optical fiber temperature sensors is arranged to be in contact with the object of temperature measurement.   
     
     
         3 . The aerosol generating device of  claim 2 , wherein the aerosol generating article accommodated in the insertion space corresponds to the object of temperature measurement, and
 the one end of each of the one or more optical fiber temperature sensors is arranged to be in contact with an outer circumferential surface of the aerosol generating article.   
     
     
         4 . The aerosol generating device of  claim 2 , wherein the aerosol generating article accommodated in the insertion space corresponds to the object of temperature measurement, and
 the one end of each of the one or more optical fiber temperature sensors is arranged to be in contact with an end of the aerosol generating article inserted into the insertion space.   
     
     
         5 . The aerosol generating device o  claim 1 , wherein each of the one or more optical fiber temperature sensors is configured to measure, through one end, the temperature of the object of temperature measurement, and
 the one end of each of the one or more optical fiber temperature sensors is arranged to be apart from the object of temperature measurement.   
     
     
         6 . The aerosol generating device of  claim 1 , wherein the object of temperature measurement is arranged in plurality,
 each of the aerosol generating article and the microwave output portion corresponds to one of the plurality of objects of temperature measurement, and   the one or more optical fiber temperature sensors comprise: a first sensor configured to measure a temperature of the aerosol generating article; and a second sensor configured to measure a temperature of the microwave output portion.   
     
     
         7 . The aerosol generating device of  claim 6 , wherein the controller is configured to adjust a frequency of the microwaves provided into the shielding portion when the controller determines that the temperature of the aerosol generating article is lower than a preset first temperature and the temperature of the microwave output portion is higher than a preset second temperature. 
     
     
         8 . The aerosol generating device of  claim 6 , wherein the heater assembly further comprises a conductor configured to support the aerosol generating article inserted into the insertion space, and
 the controller is further configured to, when the controller determines that the temperature of the aerosol generating article is lower than a preset first temperature and the temperature of the microwave output portion is higher than a preset second temperature:   block the microwaves supplied to the heater assembly; and   control a temperature of the conductor such that the conductor heats the aerosol generating article.   
     
     
         9 . The aerosol generating device of  claim 8 , further comprising an induction coil configured to generate an alternating magnetic field toward the insertion space,
 wherein the conductor comprises a susceptor that generates heat through the magnetic field generated by the induction coil, and   the controller is further configured to, when the controller determines that the temperature of the aerosol generating article is lower than the preset first temperature and the temperature of the microwave output portion is higher than the preset second temperature, control power supplied to the induction coil, such that a temperature of the susceptor increases through the magnetic field generated by the induction coil.   
     
     
         10 . The aerosol generating device of  claim 6 , further comprising an output portion configured to output information about a state of the aerosol generating device,
 wherein the controller is further configured to, when the controller determines that the temperature of the aerosol generating article is lower than a preset first temperature and the temperature of the microwave output portion is higher than a preset second temperature, control the output portion to provide a notification to a user.   
     
     
         11 . The aerosol generating device of  claim 6 , wherein the shielding portion corresponds to one of the plurality objects of temperature measurement, and
 the one or more optical fiber temperature sensors further comprise a third sensor configured to measure a temperature of the shielding portion.   
     
     
         12 . The aerosol generating device of  claim 1 , wherein the shielding portion further comprises a guide configured to support the one or more optical fiber temperature sensors arranged in the shielding portion. 
     
     
         13 . The aerosol generating device of  claim 12 , wherein the guide comprises: a first portion extending in a longitudinal direction of the shielding portion; and a second portion extending in a direction crossing the longitudinal direction. 
     
     
         14 . The aerosol generating device of  claim 1 , wherein the heater assembly further comprises:
 a through hole arranged in the shielding portion and through which the one or more optical fiber temperature sensors pass; and   a shielding member configured to block leakage of the microwaves supplied into the shielding portion to outside of the shielding portion through the through hole.   
     
     
         15 . The aerosol generating device of  claim 1 , wherein the heater assembly further comprises a terminal configured to supply power to the one or more optical fiber temperature sensors arranged in the shielding portion, and
 the terminal extends through the shielding portion, to electrically connect an inside of the shielding portion to an outside of the shielding portion.