# US 11,998,061 B2 · Aerosol generating apparatus for controlling power of heater and operation method thereof

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- Number: US 11,998,061 B2
- Document ID: US11998061B2
- Status: Granted
- Kind: B2
- Application number: 18/266,958
- Filed: 2022-05-12
- Published: 2024-02-01
- Granted: 2024-06-04
- Earliest claimed: 2021-06-15
- Assignees: Kt&G Corporation
- Applicants: Kt&G Corporation
- Inventors: Yong Hwan Kim; Dong Sung Kim; Seung Won Lee; Seok Su Jang; Dae Nam Han
- Web page: https://patentgrep.com/patent/US11998061B2

## CPC

- A24F 40/51: Arrangement of sensors
- A24F 40/57: Temperature control
- A24F 40/465: specially adapted for induction heating
- A24F 40/53: Monitoring, e.g. fault detection
- H02J 7/855: {with circuits adapted for supplying loads from the battery}
- H05B 6/06: Control, e.g. of temperature, of power
- H05B 6/108: {for heating a fluid}
- A24F 40/20: Devices using solid inhalable precursors
- A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06)
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

Provided is an aerosol generating apparatus including: a heater configured to heat an aerosol generating article inserted into an accommodation space of the aerosol generating apparatus; a sensing module including at least one of an inductive sensor configured to detect a change in an inductance of the accommodation space or a temperature sensor configured to detect a change in a temperature of the heater; and a processor configured to: detect, via the sensing module, whether the aerosol generating article that is inserted into the accommodation space is at least partially moved from the accommodation space; and based on detecting that the aerosol generating article is at least partially moved from the accommodation space, control a power supply to the heater, based on at least one of the change in the inductance or the change in the temperature acquired via the sensing module.

## Claims

### Claim 1

An aerosol generating system comprising:
an aerosol generating device including formed therein a first accommodation space having an aerosol generating article inserted therein;
a cradle including formed therein a second accommodation space having the aerosol generating device accommodated therein, wherein the aerosol generating device includes: a battery charged by power received from the cradle while the aerosol generating device is accommodated in the second accommodation space;
an induction coil configured to form a magnetic field within the first accommodation space by receiving power from the battery; and
a controller electrically connected to the induction coil,
wherein the controller is configured to:
when the aerosol generating article is inserted into the first accommodation space, heat the aerosol generating article by controlling the induction coil to form the magnetic field;
when the aerosol generating article is moved or removed from the first accommodation space, stop supply of power to the induction coil after a certain time elapses; and
when the aerosol generating article is inserted again after moved or removed from the first accommodation space, not stop the supply of power to the induction coil.

### Claim 2 (depends on 1)

The aerosol generating system of claim 1, wherein the certain time includes a time within a range of about 1 second to 5 seconds.

### Claim 3 (depends on 1)

The aerosol generating system of claim 1, wherein the controller switches a mode for detecting reinsertion of the aerosol generating article for the certain time into an active state.

### Claim 4 (depends on 1)

The aerosol generating system of claim 1, wherein the aerosol generating device further includes a puff sensor arranged on a path via which external air is introduced, and electrically connected to the controller, wherein the controller detects an inhalation of a user on the basis of at least one of a change in temperature, a change in flow rate, and a change in pressure, on the path.

### Claim 5 (depends on 1)

The aerosol generating system of claim 1, wherein the induction coil includes a solenoid wound along the first accommodation space, and the induction coil includes at least one of copper, silver, gold, aluminum, tungsten, zinc, and nickel.