Aerosol-generating system comprising a mesh susceptor

Patent metadata

Field	Value
Publication number	US-2023200446-A1
Application number	US-202318179004-A
Country	US
Kind code	A1
Filing date	Mar 6, 2023
Priority date	May 21, 2014
Publication date	Jun 29, 2023
Grant date	—

Abstract

A cartridge is provided for an aerosol-generating system, the aerosol-generating system including an aerosol-generating device, the cartridge configured to be used with the device, the aerosol-generating device including: 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; and the cartridge including: a cartridge housing containing an aerosol-forming substrate and a fluid-permeable susceptor element positioned to heat the aerosol-forming substrate, the aerosol-forming substrate being a liquid at room temperature and being configured to form a meniscus across a surface of the fluid-permeable susceptor element, and a mouthpiece portion having an outlet through which aerosol generated by the system can be drawn into a user's mouth.

First claim

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 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 and a fluid-permeable 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 across a surface of the fluid-permeable susceptor element, and
a mouthpiece portion having an outlet through which aerosol generated by the system can be drawn into a user's mouth.

2 . The cartridge according to claim 1 , wherein the fluid-permeable susceptor element is a mesh susceptor element.

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

4 . The cartridge according to claim 2 , wherein the mesh susceptor element has a mesh size of between 160 and 600 Mesh US.

5 . The cartridge according to claim 2 , wherein the mesh susceptor element comprises a plurality of filaments, each filament of the plurality of filaments having a diameter between 8 μm and 100 μm.

6 . The cartridge according to claim 2 , wherein the mesh susceptor element comprises a plurality of filaments, each filament of the plurality of filaments having a diameter between 8 μm and 50 μm.

7 . The cartridge according to claim 2 , wherein the mesh susceptor element comprises a plurality of filaments, each filament of the plurality of filaments having a diameter between 8 μm and 39 μm.

8 . The cartridge according to claim 1 , wherein the fluid-permeable susceptor element has a relative permeability between 500 and 40000.

9 . The cartridge according to claim 1 , wherein the fluid-permeable susceptor element extends across an opening in cartridge housing.

10 . The cartridge according to claim 1 , wherein the fluid-permeable susceptor element is welded to the cartridge housing.

11 . The cartridge according to claim 1 , further comprising a capillary material within the cartridge housing, the capillary material holding the aerosol-forming substrate.

12 . The cartridge according to claim 11 , wherein the capillary material extends into perforations in the fluid-permeable susceptor element.

13 . The cartridge according to claim 1 , wherein the fluid-permeable susceptor element comprises a first material having a Curie temperature corresponding to a maximum temperature of fluid-permeable susceptor element in use.

14 . The cartridge according to claim 13 , wherein the fluid-permeable susceptor element comprises a second material having a Curie temperature higher than the first material.

15 . 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 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 and a fluid-permeable 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 across a surface of the fluid-permeable susceptor element, and
a mouthpiece portion having an outlet through which aerosol generated by the system can be drawn into a user's mouth.

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

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

18 . The aerosol-generating system according to claim 15 , wherein the inductor coil is positioned adjacent to the susceptor element in use.

19 . The aerosol-generating system according to claim 15 , wherein an airflow channel is between the inductor coil and the susceptor element in use.

20 . The aerosol-generating system according to claim 15 , wherein the system is a handheld smoking system.

Assignees

• Philip Morris Products Sa

Inventors

• Mironov Oleg
• Thorens Michel
• Zinovik Ihar Nikolaevich

Classifications

• A24F40/42

  Cartridges or containers for inhalable precursors · CPC title

• A24F40/465 Primary

  specially adapted for induction heating · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title

• A24F47/00 Primary

  Smokers' requisites not otherwise provided for · CPC title

• F24F6/08

  using heated wet elements · CPC title