Aerosol generating system and operating method therefor

Patent metadata

Field	Value
Publication number	US-12527355-B2
Application number	US-202117634446-A
Country	US
Kind code	B2
Filing date	Jul 16, 2021
Priority date	Jul 16, 2020
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

An aerosol generating system may include a plurality of susceptors having different resonance frequencies and configured to heat different portions of a cigarette accommodated in an aerosol generating device, a coil configured to heat the plurality of susceptors, a plurality of capacitors connected to the coil, and a processor configured to determine a combination of capacitors through which current applied to the coil is to pass from among the plurality of capacitors, and heat a susceptor corresponding to a resonance frequency according to the combination by applying current to the coil according to the combination.

First claim

The invention claimed is:

1 . An aerosol generating system comprising:
a plurality of susceptors having different resonance frequencies and configured to heat different portions of a cigarette accommodated in an aerosol generating device; a coil configured to heat the plurality of susceptors; a plurality of capacitors connected to the coil; and a processor configured to determine a combination of capacitors through which current applied to the coil is to pass from among the plurality of capacitors, and heat a susceptor corresponding to a resonance frequency according to the combination by applying current to the coil according to the combination.

2 . The aerosol generating system of claim 1 , wherein the processor is further configured to apply current having the resonance frequency according to the combination to the coil.

3 . The aerosol generating system of claim 1 , wherein the processor is further configured to, within one smoking operation, heat the susceptor corresponding to the resonance frequency according to the combination during a pre-set time, and then change the combination and heat a susceptor corresponding to a resonance frequency according to the changed combination during a remaining time.

4 . The aerosol generating system of claim 1 , wherein the processor is further configured to heat at least one susceptor not corresponding to the resonance frequency according to the combination to a temperature lower than a temperature of the susceptor corresponding to the resonance frequency according to the combination.

5 . The aerosol generating system of claim 1 , wherein the plurality of susceptors are arranged in the aerosol generating device or the cigarette in a longitudinal direction of the cigarette accommodated in the aerosol generating device, and the coil surrounds the plurality of susceptors.

6 . The aerosol generating system of claim 1 , wherein the plurality of capacitors are connected in parallel to one another, and are connected in series to the coil.

7 . The aerosol generating system of claim 1 , further comprising switches respectively connected in series to the plurality of susceptors,
wherein the processor is further configured to turn on/off the switches according to the combination.

8 . The aerosol generating system of claim 1 , further comprising a cigarette,
wherein the cigarette comprises different materials in the different portions, wherein, when the susceptor corresponding to the combination is heated, aerosols of different components are generated from the aerosol generating system.

9 . The aerosol generating system of claim 1 , further comprising a cigarette,
wherein the cigarette comprises different amounts of moisturizer in the different portions, wherein, when the susceptor corresponding to the combination is heated, different amounts of aerosol are generated from the aerosol generating system.

10 . A method for operating an aerosol generating system, the method comprising:
determining a combination of capacitors through which current applied to a coil is to pass from among a plurality of capacitors connected to the coil; applying current to the coil according to the combination; and heating a susceptor corresponding to a resonance frequency according to the combination from among a plurality of susceptors having different resonance frequencies by applying current to the coil.

11 . The method of claim 10 , wherein the applying comprises applying current having the resonance frequency according to the combination to the coil.

12 . The method of claim 10 , wherein the heating comprises heating the susceptor during a pre-set time, within a time corresponding to one smoking operation,
wherein the method further comprises: changing the combination; and, within the time corresponding to one smoking operation, heating a susceptor corresponding to a resonance frequency according to the changed combination during a remaining time.

13 . The method of claim 10 , wherein the heating comprises heating at least one susceptor not corresponding to the resonance frequency according to the combination to a temperature lower than a temperature of the susceptor corresponding to the resonance frequency according to the combination.

Assignees

• Kt & G Corp

Inventors

• Seo Jang Won
• Go Gyoung Min
• Bae Hyung Jin
• Jang Chul Ho
• Jeong Min Seok
• Jeong Jong Seong
• Jung Jin Chul

Classifications

• A24F40/50

  Control or monitoring · CPC title

• A24F40/57

  Temperature control · CPC title

• A24F40/53

  Monitoring, e.g. fault detection · CPC title

• H05B1/0225

  actuated by timers · CPC title

• H05B6/06

  Control, e.g. of temperature, of power · CPC title