Aerosol generation apparatus

Patent metadata

Field	Value
Publication number	US-12364281-B2
Application number	US-201917050520-A
Country	US
Kind code	B2
Filing date	Oct 24, 2019
Priority date	Dec 11, 2018
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

An aerosol generating device includes an accommodator for accommodating a cigarette through an opening formed at an end of the accommodator, a first susceptor located in the accommodator, a second susceptor disposed a predetermined distance away from the first susceptor, a coil that generates an alternating magnetic field for the first and second susceptors to generate heat, and a temperature sensor arranged proximate to the second susceptor to measure a temperature profile of the second susceptor. The temperature profile of the second susceptor corresponds to a temperature profile of the first susceptor, and a temperature of the first susceptor is determined based on the temperature profile of the second susceptor.

First claim

What is claimed is:

1. An aerosol generating device comprising:
an accommodator configured to accommodate a cigarette through an opening formed at one end of the accommodator;
a first susceptor located in the accommodator;
a second susceptor located in a compartment forming a space between an inner wall of the compartment and the second susceptor, the second susceptor being disposed a predetermined distance away from the first susceptor in the space between the inner wall of the compartment and the second susceptor;
a coil configured to generate an alternating magnetic field for the first susceptor and the second susceptor to generate heat; and
a temperature sensor arranged proximate to the second susceptor to measure a temperature profile of the second susceptor,
wherein an upper wall of the compartment and a bottom surface of the accommodator form a wall that separates the accommodator and the compartment from each other,
wherein the temperature profile of the second susceptor corresponds to a temperature profile of the first susceptor,
wherein the aerosol generating device further comprises a controller configured to determine a temperature of the first susceptor based on the temperature profile of the second susceptor, and
wherein the space between the inner wall of the compartment and the second susceptor surrounds the second susceptor in a radial direction from a center of the compartment to the inner wall of the compartment as well as along a longitudinal direction of the second susceptor.

2. The aerosol generating device of claim 1 , wherein
the coil is wound along a side wall of the accommodator, and
the second susceptor is disposed the predetermined distance away from the first susceptor toward another end of the accommodator.

3. The aerosol generating device of claim 1 , wherein
the coil extends toward the compartment to surround a side wall of the compartment together.

4. The aerosol generating device of claim 1 , wherein the second susceptor is made of a same material as the first susceptor.

5. The aerosol generating device of claim 1 , wherein the first susceptor and the second susceptor have a same longitudinal axis.

6. The aerosol generating device of claim 1 , wherein the temperature sensor is disposed a predetermined distance away from the second susceptor.

7. The aerosol generating device of claim 1 , wherein the temperature sensor is arranged to be in contact with the second susceptor.

8. The aerosol generating device of claim 1 , wherein the temperature sensor includes an infrared sensor, a negative temperature coefficient of resistance (NTC) sensor, or a positive temperature coefficient of resistance (PTC) sensor.

9. The aerosol generating device of claim 1 , wherein the controller is further configured to make the temperature profile of the second susceptor correspond to the temperature profile of the first susceptor through a predetermined off-set value.

10. The aerosol generating device of claim 1 , further comprising a power supply configured to supply electric power to the coil.

11. The aerosol generating device of claim 1 , further comprising a recording medium, and
wherein the controller is further configured to:
in the recording medium, record and quantify the temperature profile of the second susceptor based on a temperature measured by the temperature sensor; and
estimate the temperature profile of the first susceptor based on the temperature profile of the second susceptor.

Assignees

• Kt & G Corp

Inventors

• Park Sang Kyu
• Lee Seung Won
• Lee Jong Sub

Classifications

• A24F40/465

  specially adapted for induction heating · CPC title

• A24F40/51

  Arrangement of sensors · CPC title

• A24F40/57

  Temperature control · CPC title

• A24F40/20

  Devices using solid inhalable precursors · CPC title

• H05B1/0202

  Switches · CPC title