Aerosol generating device, heater for aerosol generating device, and control method

Abstract

An aerosol generating device, a heater for the aerosol generating device, and a control method are provided. The aerosol generating device includes: a chamber at least partially receiving an aerosol generating product; a heater surrounding the chamber and heating the aerosol generating product, the heater at least including a first heating area, a second heating area, and a third heating area which are sequentially arranged in the circumferential direction of the chamber; a battery cell providing a power to the heater; and a circuit for controlling the battery cell to provide the power to the heater to simultaneously heat the first heating area, the second heating area, and the third heating area, and to selectively heat one of the first heating area, the second heating area and the third heating area at a higher speed or a higher power than the other two.

1 . An aerosol generating device, configured to heat an aerosol generating product to generate an aerosol, wherein the aerosol generating device comprises:
 a chamber, at least partially receiving the aerosol generating product;   a heater, constructed to at least partially surround the chamber, and used for heating the aerosol generating product, the heater at least comprising a first heating area, a second heating area and a third heating area sequentially arranged in the circumferential direction of the chamber;   a battery cell, used for providing a power to the heater; and   a circuit, configured to control the battery cell to provide the power to the heater so as to simultaneously heat the first heating area, the second heating area and the third heating area, and to selectively heat one of the first heating area, the second heating area and the third heating area at a higher speed or a higher power than the other two.   
     
     
         2 . The aerosol generating device according to  claim 1 , wherein the heater is constructed not to only heat one or two of the first heating area, the second heating area and the third heating area. 
     
     
         3 . The aerosol generating device according to  claim 1 , wherein the first heating area, the second heating area and the third heating area are constructed to be only heated at a same time. 
     
     
         4 . The aerosol generating device according to  claim 1 , wherein the heater is not disposed in more heating areas beyond the first heating area, the second heating area and the third heating area; and/or
 the heater only comprises three heating areas.   
     
     
         5 . The aerosol generating device according to  claim 1 , wherein a radian of one of the first heating area, the second heating area and the third heating area heated at a higher speed or a higher power in the circumferential direction of the heater is smaller than π, and a sum of radians of the other two heating areas heated at a lower speed or a lower power in the circumferential direction of the heater is greater than π. 
     
     
         6 . The aerosol generating device according to  claim 1 , wherein the heater at least comprises a first heating element, a second heating element and a third heating element sequentially arranged in the circumferential direction of the chamber, wherein
 the first heating element at least partially defines the first heating area;   the second heating element at least partially defines the second heating area; and   the third heating element at least partially defines the third heating area.   
     
     
         7 . The aerosol generating device according to  claim 6 , wherein the circuit is configured to selectively change an electric connection relationship of the first heating element, the second heating element and the third heating element to further enable one of the first heating area, the second heating area and the third heating area to be heated at a higher speed or a higher power than the other two. 
     
     
         8 . The aerosol generating device according to  claim 6 , wherein the circuit is configured to selectively connect two of the first heating element, the second heating element and the third heating element in series and then connect the two of the first heating element, the second heating element and the third heating element in parallel with the other one to further enable one of the first heating area, the second heating area and the third heating area to be heated at a higher speed or a higher power than the other two. 
     
     
         9 . The aerosol generating device according to  claim 8 , wherein a radian of the two of the first heating element, the second heating element and the third heating element connected in series in the circumferential direction of the heater is greater than π, and a radian of the other one heating element in the circumferential direction of the heater is smaller than π. 
     
     
         10 . The aerosol generating device according to  claim 6 , wherein the heater further comprises a first electrode element, a second electrode element and a third electrode element sequentially arranged in the circumferential direction of the chamber;
 at least a part of the first heating element is electrically connected between the first electrode element and the second electrode element, so that a current is able to be guided by the first electrode element and the second electrode element at the first heating element in use;   at least a part of the second heating element is electrically connected between the second electrode element and the third electrode element, so that a current is able to be guided by the second electrode element and the third electrode element at the second heating element in use; and   at least a part of the third heating element is electrically connected between the third electrode element and the first electrode element, so that a current is able to be guided by the third electrode element and the first electrode element at the third heating element in use.   
     
     
         11 . The aerosol generating device according to  claim 10 , wherein the circuit is configured to selectively connect only two of the first electrode element, the second electrode element and the third electrode element to further supply power to the heater, so that one of the first heating area, the second heating area and the third heating area is heated at a higher speed or a higher power than the other two. 
     
     
         12 . The aerosol generating device according to  claim 10 , wherein any two of the first electrode element, the second electrode element and the third electrode element are asymmetrically arranged in a radial direction of the heater; and/or
 any two of the first electrode element, the second electrode element and the third electrode element are asymmetrically arranged in a manner of being rotated by 180° around a central axis of the heater.   
     
     
         13 . The aerosol generating device according to  claim 6 , wherein the first heating element is at least one of an infrared heating element or a resistive heating element; and/or
 the second heating element is at least one of an infrared heating element or a resistive heating element; and/or   the third heating element is at least one of an infrared heating element or a resistive heating element.   
     
     
         14 . The aerosol generating device according to  claim 1 , wherein the heater comprises:
 a base body, at least partially surrounding the chamber;   an infrared emitting layer, formed or combined on the base body; and   a first electrode element, a second electrode element and a third electrode element arranged in the circumferential direction of the base body; and the first heating area defined by a part of the infrared emitting layer located between the first electrode element and the second electrode element, the second heating area defined by a part of the infrared emitting layer located between the second electrode element and the third electrode element, and the third heating area defined by a part of the infrared emitting layer located between the third electrode element and the first electrode element.   
     
     
         15 . The aerosol generating device according to  claim 1 , wherein the circuit is configured to control the battery cell to provide a power to the heater so that the first heating area is heated at a higher speed or a higher power than the second heating area and/or the third heating area in a first time period, the second heating area is heated at a higher speed or a higher power than the first heating area and/or the third heating area in a second time period, and the third heating area is heated at a higher speed or a higher power than the first heating area and/or the second heating area in a third time period. 
     
     
         16 . The aerosol generating device according to  claim 15 , wherein in the first time period, the power provided by the circuit to the first heating area is substantially four times the power provided to the second heating area and/or the third heating area; and/or
 in the second time period, the power provided by the circuit to the second heating area is substantially four times the power provided to the first heating area and/or the third heating area; and/or   in the third time period, the power provided by the circuit to the third heating area is substantially four times the power provided to the first heating area and/or the second heating area.   
     
     
         17 . The aerosol generating device according to  claim 1 , wherein the circuit is configured to control the battery cell to provide a power to the heater so as to heat, in a first time period, the first heating area at a first power, and heat the second heating area and the third heating area at substantially a same second power; to heat, in a second time period, the second heating area at a third power, and to heat the first heating area and the third heating area at substantially a same fourth power; and to heat, in a third time period, the third heating area at a fifth power, and to heat the first heating area and the second heating area at substantially a same sixth power. 
     
     
         18 . The aerosol generating device according to  claim 15 , wherein the circuit is further configured to control the battery cell to provide a power to the heater so as to heat the first heating area to a first target temperature and enable temperatures of the second heating area and the third heating area to be lower than the first target temperature in the first time period; to heat the second heating area to a second target temperature and enable a temperature of the third heating area to be lower than the second target temperature in the second time period; and to heat the third heating area to a third target temperature and enable temperatures of the first heating area and the second heating area not to be lower than the third target temperature in the third time period. 
     
     
         19 . The aerosol generating device according to  claim 15 , wherein the first time period is 100 s to 150 s; and/or
 the second time period is 20 s to 30 s; and/or   the duration of the third time period is about 60 s to 120 s; and/or   the duration of the fourth time period is about 60 s to 150 s.   
     
     
         20 - 26 . (canceled) 
     
     
         27 . A control method of an aerosol generating device, the aerosol generating device being configured to heat an aerosol generating product to generate an aerosol, the aerosol generating device comprising:
 a chamber, at least partially receiving the aerosol generating product; and   a heater, constructed to at least partially surround the chamber, and used for heating the aerosol generating product, the heater at least comprising a first heating area, a second heating area and a third heating area sequentially arranged in the circumferential direction to respectively heat different parts of the aerosol generating product,   wherein the method comprises:   providing a power to the heater to simultaneously heat the first heating area, the second heating area and the third heating area; and   adjusting at least some of electrode elements of the first heating area, the second heating area and the third heating area, so that one of the first heating area, the second heating area and the third heating area is heated at a higher speed or a higher power than the other two.   
     
     
         28 . (canceled)