Aerosol-generating system comprising a mesh susceptor

Patent metadata

Field	Value
Publication number	US-11617396-B2
Application number	US-202017092540-A
Country	US
Kind code	B2
Filing date	Nov 9, 2020
Priority date	May 21, 2014
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

There is provided a cartridge for use in an aerosol-generating system, the aerosol-generating system including an aerosol-generating device, the cartridge configured to be used with the device, wherein the device includes a device housing, an inductor coil positioned on or within the housing, and a power supply connected to the inductor coil and configured to provide a high frequency oscillating current to the inductor coil, the cartridge including a cartridge housing containing an aerosol-forming substrate and a ferrite mesh susceptor element positioned to heat the aerosol-forming substrate.

First claim

The invention claimed is:

1. A cartridge for an aerosol-generating system, the aerosol-generating system comprising an aerosol-generating device, the cartridge configured to be used with the device,
the aerosol-generating device comprising:
a device housing,
an inductor coil positioned on or within the device housing, and
a power supply connected to the inductor coil and configured to provide a high frequency oscillating current to the inductor coil; and

the cartridge comprising:
a cartridge housing containing an aerosol-forming substrate,
a mesh susceptor element positioned to heat the aerosol-forming substrate,
wherein the aerosol-forming substrate is a liquid at room temperature and is configured to form a meniscus in interstices of the mesh susceptor element,
a first capillary material disposed in the cartridge housing in contact with the mesh susceptor element, and
a second capillary material disposed in the cartridge housing in contact with the first capillary material, wherein the first capillary material has a higher thermal decomposition temperature than the second capillary material.

2. The cartridge according to claim 1 , wherein the mesh susceptor element is a ferrite or ferrous mesh susceptor element.

3. The cartridge according to claim 1 , wherein the mesh susceptor element has a mesh size of between 160 and 600 Mesh US.

4. The cartridge according to claim 1 , wherein the mesh susceptor element comprises a plurality of filaments, each filament having a diameter between 8 μm and 100 μm.

5. The cartridge according to claim 1 , wherein the mesh susceptor element has a relative permeability between 500 and 40000.

6. The cartridge according to claim 1 , wherein the mesh susceptor element extends across an opening in cartridge housing.

7. The cartridge according to claim 1 , wherein the mesh susceptor element is welded to the cartridge housing.

8. The cartridge according to claim 1 , wherein the first capillary material extends into interstices of the mesh susceptor element.

9. The cartridge according to claim 1 , wherein the first capillary material is positioned between the second capillary material and the mesh susceptor element.

10. The cartridge according to claim 1 , wherein the second capillary material is larger than the first capillary material.

11. The cartridge according to claim 1 , wherein the first capillary material has a thermal decomposition temperature of at least 160° C.

12. The cartridge according to claim 1 , wherein the first capillary material comprises fibreglass.

13. The cartridge according to claim 1 , wherein the second capillary material comprises high density polyethylene (HDPE) or polyethylene terephthalate (PET).

14. An aerosol-generating system, comprising an aerosol-generating device and a cartridge, the cartridge configured to be used with the device,
the aerosol-generating device comprising:
a device housing;
an inductor coil positioned on or within the device housing, and
a power supply connected to the inductor coil and configured to provide a high frequency oscillating current to the inductor coil; and

the cartridge comprising:
a cartridge housing containing an aerosol-forming substrate,
a mesh susceptor element positioned to heat the aerosol-forming substrate,
wherein the aerosol-forming substrate is a liquid at room temperature and is configured form a meniscus in interstices of the mesh susceptor element,
a first capillary material disposed in the cartridge housing in contact with the susceptor element, and
a second capillary material disposed in the cartridge housing in contact with the first capillary material, wherein the first capillary material has a higher thermal decomposition temperature than the second capillary material.

15. The aerosol-generating system according to claim 14 , wherein the inductor coil is a flat spiral inductor coil.

16. The aerosol-generating system according to claim 15 , wherein the inductor coil has a diameter of less than 10 mm.

17. The aerosol-generating system according to claim 14 , wherein the inductor coil is positioned adjacent to the susceptor element.

18. The aerosol-generating system according to claim 14 , wherein an airflow channel is between the inductor coil and the susceptor element.

19. The aerosol-generating system according to claim 14 , wherein the system is a handheld smoking system.

20. The aerosol-generating system according to claim 14 , wherein the first capillary material is positioned between the second capillary material and the mesh susceptor element.

Assignees

• Philip Morris Products Sa

Inventors

• Mironov Oleg
• Thorens Michel
• Zinovik Ihar Nikolaevich

Classifications

• A24F40/465 Primary

  specially adapted for induction heating · CPC title

• A24F40/42

  Cartridges or containers for inhalable precursors · CPC title

• A24F47/00 Primary

  Smokers' requisites not otherwise provided for · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title

• F24F6/08

  using heated wet elements · CPC title