# US 11,992,064 B2 · Method for controlling power of heater of aerosol generating apparatus which can be continuously used and aerosol generating apparatus thereof

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- Number: US 11,992,064 B2
- Document ID: US11992064B2
- Status: Granted
- Kind: B2
- Application number: 17/057,777
- Filed: 2019-10-23
- Published: 2021-07-08
- Granted: 2024-05-28
- Earliest claimed: 2018-11-16
- Assignees: Kt&G Corporation
- Applicants: Kt&G Corporation
- Inventors: Jae Min Lee
- Web page: https://patentgrep.com/patent/US11992064B2

## CPC

- A24F 40/57: Temperature control
- H05B 1/0244: {Heating of fluids (H05B1/0247 takes precedence)}
- H05B 6/06: Control, e.g. of temperature, of power
- A24F 40/10: Devices using liquid inhalable precursors
- 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)
- 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 generating an aerosol by heating an aerosol generating substrate; and a controller monitoring and controlling power supplied to the heater, wherein, upon receiving an input of reheating the heater within a preset time, after the heater reaches the first target temperature and generates an aerosol, the controller controls the heater to generate an aerosol according to a second target temperature lower than the first target temperature.

## Claims

### Claim 1

An aerosol generating apparatus comprising:
a heater configured to generate an aerosol by heating an aerosol generating substrate; and
a controller configured to monitor and control power supplied to the heater such that the heater generates the aerosol in a second smoking process at a second target temperature lower than a first target temperature in a first smoking process upon receiving an input for starting the second smoking process within a preset time after the heater generates the aerosol at the first target temperature in the first smoking process.

### Claim 2 (depends on 1)

The aerosol generating apparatus of claim 1, wherein the controller is further configured to calculate the second target temperature based on the first target temperature.

### Claim 3 (depends on 1)

The aerosol generating apparatus of claim 1, wherein the controller is further configured to calculate the second target temperature based on a temperature of the heater at a time point when the input is received.

### Claim 4 (depends on 3)

The aerosol generating apparatus of claim 3, wherein the controller is further configured to calculate the second target temperature according to a linear equation based on the temperature of the heater at the time point when the input is received.

### Claim 5 (depends on 1)

The aerosol generating apparatus of claim 1, wherein the controller is further configured to acquire the second target temperature with reference to a table in which the second target temperature is associated with a temperature range to which a temperature of the heater belongs at a time point when the input is received.

### Claim 6

An aerosol generating apparatus comprising:
a heater configured to generate an aerosol by heating an aerosol generating substrate; and
a controller configured to monitor and control power supplied to the heater such that the heater generates the aerosol at a second target temperature lower than a first target temperature upon receiving an input of reheating the heater within a preset time after the heater generates the aerosol at the first target temperature,
wherein the controller is further configured to:
determine that preheating of the heater is completed when a maintenance time period during which the first target temperature is maintained or a maintenance time period during which the second target temperature is maintained expires, and
control the power such that the maintenance time period during which the second target temperature is longer than the maintenance time period during which the first target temperature is maintained.

### Claim 7 (depends on 6)

The aerosol generating apparatus of claim 6, wherein the maintenance time period during which the second target temperature is maintained is calculated based on a temperature of the heater at a time point when the input is received.

### Claim 8

An aerosol generating apparatus comprising:
a heater configured to generate an aerosol by heating an aerosol generating substrate; and
a controller configured to monitor and control power supplied to the heater such that the heater generates the aerosol at a second target temperature lower than a first target temperature upon receiving an input of reheating the heater within a preset time after the heater generates the aerosol at the first target temperature,
wherein the controller is further configured to control the power such that a second arrival time period during which the heater is heated and reaches the second target temperature is longer than a first arrival time period during which the heater is heated and reaches the first target temperature.

### Claim 9 (depends on 8)

The aerosol generating apparatus of claim 8, wherein the controller is further configured to acquire the second arrival time period with reference to a table in which the second arrival time period is associated with a temperature range to which a temperature of the heater belongs at a time point when the input is received.