Aerosol-generating device with removable susceptor

Patent metadata

Field	Value
Publication number	US-11363840-B2
Application number	US-201816623694-A
Country	US
Kind code	B2
Filing date	Aug 9, 2018
Priority date	Aug 9, 2017
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

An aerosol-generating device is provided, including a housing defining a chamber configured to receive at least a portion of an aerosol-generating article; an inductor coil disposed around at least a portion of the chamber; an elongate susceptor element configured for removable attachment to the housing within the chamber and projecting into the chamber when the element is removably attached to the housing; an aperture positioned on a side of the housing, the aperture and the element being configured for insertion of the element into the chamber through the aperture and configured for removal of the element from the chamber through the aperture; and a power supply and a controller connected to the coil and to provide an alternating electric current to the coil such that the coil generates an alternating magnetic field to heat the element and thereby heat at least a portion of the article received within the chamber.

First claim

The invention claimed is:

1. An aerosol-generating device, comprising:
a housing defining a chamber configured to receive at least a portion of an aerosol-generating article;
an inductor coil disposed around at least a portion of the chamber;
an elongate susceptor element configured for removable attachment to the housing within the chamber, wherein the elongate susceptor element projects into the chamber when the elongate susceptor element is removably attached to the housing;
an aperture positioned on a side of the housing, wherein the aperture and the elongate susceptor element are configured for insertion of the elongate susceptor element into the chamber through the aperture and configured for removal of the elongate susceptor element from the chamber through the aperture; and
a power supply and a controller connected to the inductor coil and configured to provide an alternating electric current to the inductor coil such that the inductor coil generates an alternating magnetic field to heat the elongate susceptor element and thereby heat at least a portion of the aerosol-generating article received within the chamber.

2. The aerosol-generating device according to claim 1 ,
wherein the elongate susceptor element comprises an elongate base portion and an elongate heating portion extending from a first end of the elongate base portion, and
wherein the elongate base portion is orthogonal to the elongate heating portion.

3. The aerosol-generating device according to claim 2 ,
wherein the housing defines a channel extending at least partially across a closed end of the chamber from the aperture, and
wherein the channel is configured to receive the elongate base portion of the elongate susceptor element.

4. The aerosol-generating device according to claim 3 , wherein the channel is configured to retain the elongate base portion of the elongate susceptor element by an interference fit.

5. The aerosol-generating device according to claim 3 ,
wherein the housing defines at least one flange extending across at least a portion of the channel, and
wherein the at least one flange is configured to retain the elongate base portion of the elongate susceptor portion within the channel.

6. The aerosol-generating device according to claim 5 ,
wherein the at least one flange at least partially defines a slot, and
wherein the channel, the slot, and the elongate susceptor element are configured such that the elongate heating portion of the elongate susceptor element extends through the slot when e elongate base portion is retained within the channel.

7. The aerosol-generating device according to claim 1 , wherein a portion of the elongate susceptor element s configured to protrude through the aperture when the elongate susceptor element is received within the chamber.

8. An aerosol-generating device, comprising:
a housing defining a chamber configured to receive at least a portion of an aerosol-generating article;
an inductor coil disposed around at least a portion of the chamber;
an elongate susceptor element configured for removable attachment to the housing within the chamber, wherein the elongate susceptor element projects into the chamber when the elongate susceptor element is removably attached to the housing, and wherein the elongate susceptor element comprises a base portion configured for removable attachment to the housing and an elongate heating portion extending from the base portion; and
a power supply and a controller connected to the inductor coil and configured to provide an alternating electric current to the inductor coil such that the inductor coil generates an alternating magnetic field to heat the elongate susceptor element and thereby heat at least a portion of the aerosol-generating article received within the chamber.

9. The aerosol-generating device according to claim 8 , wherein the elongate heating portion extends from a centre of the base portion.

10. The aerosol-generating device according to claim 8 , wherein the base portion of the elongate susceptor element is configured for removable attachment to the housing by a magnetic attachment.

11. The aerosol-generating device according to claim 10 ,
wherein the base portion comprises a permanent magnet and the aerosol-generating device comprises a ferromagnetic material at an upstream end of the chamber, or
wherein the base portion comprises a ferromagnetic material and the aerosol-generating device comprises a permanent magnet at an upstream end of the chamber, or
wherein the base portion comprises a permanent magnet and the aerosol-generating device comprises a permanent magnet at an upstream end of the chamber.

12. The aerosol-generating device according to claim 10 , further comprising a release mechanism configured to provide relative movement between the elongate susceptor element and the aerosol-generating device to break the magnetic attachment.

13. An extraction tool for an aerosol-generating device according to claim 10 , the extraction tool being sized for insertion into the chamber and comprising a permanent magnet at an end of the extraction tool.

14. An aerosol-generating system, comprising:
an aerosol-generating device according to claim 1 ; and
an aerosol-generating article having an aerosol-forming substrate and being configured for the aerosol-generating device.

Assignees

• Philip Morris Products Sa

Inventors

• Courbat Jerome Christian
• Fursa Oleg
• Mironov Oleg
• Reevell Tony
• Rossoll Andreas Michael
• Stura Enrico

Classifications

• H05B6/105

  using a susceptor · CPC title

• A24F40/20

  Devices using solid inhalable precursors · CPC title

• A24F40/50

  Control or monitoring · CPC title

• A24F40/465 Primary

  specially adapted for induction heating · CPC title

• A24F40/48

  Fluid transfer means, e.g. pumps · CPC title