Aerosol-generating device

Patent metadata

Field	Value
Publication number	US-12433342-B2
Application number	US-202218017028-A
Country	US
Kind code	B2
Filing date	Mar 3, 2022
Priority date	Mar 5, 2021
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

An aerosol-generating device is disclosed. The aerosol-generating device of the present disclosure includes a body having formed therein a first insertion space; a heater configured to heat the first insertion space; a sensing circuit connected to the heater; and a sensor configured to detect a change in a magnetic field of the sensing circuit, wherein the sensing circuit comprises a first part, a second part, and a third part which are each electrically conductive, wherein the first part and the second part are elongated with the third part extending between the first part and the second part to electrically connect the first part and the second part to each other, and wherein the sensor is disposed between the first part and the second part.

First claim

The invention claimed is:

1. An aerosol-generating device comprising:
a body having formed therein a first insertion space;
a heater configured to heat the first insertion space;
a sensing circuit connected to the heater; and
a sensor configured to detect a change in a magnetic field of the sensing circuit,
wherein the sensing circuit comprises a first part, a second part, and a third part which are each electrically conductive,
wherein the first part and the second part are elongated with the third part extending between the first part and the second part to electrically connect the first part and the second part to each other, and
wherein the sensor is disposed between the first part and the second part.

2. The aerosol-generating device according to claim 1 , wherein the sensor overlaps at least one of the first part or the second part.

3. The aerosol-generating device according to claim 1 , wherein the second part is disposed so as to oppose the first part with respect to the sensor.

4. The aerosol-generating device according to claim 3 , wherein the first part and the second part extend parallel to each other.

5. The aerosol-generating device according to claim 4 , wherein the sensing circuit further comprises a fourth part which is electrically conductive and electrically connected to at least one of the first part or the second part, and
wherein the sensor is disposed between the first part, the second part, the third part, and the fourth part.

6. The aerosol-generating device according to claim 1 , wherein the first part is one of a plurality of first parts or the second part is one of a plurality of second parts.

7. The aerosol-generating device according to claim 1 , wherein a portion of the sensing circuit is wound around the sensor multiple times.

8. The aerosol-generating device according to claim 1 , further comprising:
a controller configured to control a temperature of the heater based on a change in a magnetic field of the sensing circuit detected by the sensor.

9. The aerosol-generating device according to claim 1 , further comprising:
an induction coil disposed adjacent to the first insertion space;
a cap detachably coupled to the body to cover at least a portion of the body at which the first insertion space is formed, wherein the cap comprises:
a second insertion space having an opening at an upper surface of the cap; and
a container extending downwardly from the cap and configured to be inserted into the first insertion space when the cap is coupled to the body, wherein the container defines a third insertion space formed therein which is in communication with the second insertion space,

wherein the heater is mounted inside the container and is configured to generate heat based on operation of the induction coil, and
wherein the heater is detachably connected to the sensing circuit.

10. The aerosol-generating device according to claim 9 , wherein the sensing circuit includes a first connection portion disposed at the body and exposed to the first insertion space,
wherein the container includes a second connection portion connected to the heater, and
wherein the second connection portion contacts the first connection portion to connect the heater to the sensing circuit when the cap is coupled to the body.

11. The aerosol-generating device according to claim 9 , wherein the cap includes a cover to open or close the opening of second insertion space.

12. The aerosol-generating device according to claim 9 , wherein the container includes a lower container wall and a side container wall extending upwards from a periphery of the lower container wall to surround at least a portion of the third insertion space, and
wherein the side container wall comprises an opening to expose the heater therethrough.

13. The aerosol-generating device according to claim 12 , wherein the opening has a size larger than a size of the heater.

14. The aerosol-generating device according to claim 12 , wherein the lower container wall defines a lower portion of the third insertion space.

15. The aerosol-generating device according to claim 9 , further comprising:
a shielding material disposed between the induction coil and the sensor to block a magnetic field generated by the induction coil.

Assignees

• Kt & G Corp

Inventors

• Lee Jongsub
• Kim Minkyu
• Park Jueon
• Cho Byungsung

Classifications

• A24F40/57

  Temperature control · CPC title

• A24F40/465 Primary

  specially adapted for induction heating · CPC title

• A24F40/53

  Monitoring, e.g. fault detection · CPC title

• H05B6/36

  Coil arrangements · CPC title

• A24F40/85

  Maintenance, e.g. cleaning · CPC title