Aerosol delivery system having heating surface with a plurality of elongated fluid transport regions

Patent metadata

Field	Value
Publication number	US-11458266-B2
Application number	US-201816608745-A
Country	US
Kind code	B2
Filing date	Apr 24, 2018
Priority date	Apr 25, 2017
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

An aerosol-generation apparatus, which is suitable for use as part of an aerosol-generating system of a smoking substitute type. The apparatus comprises a heater having a planar heating surface, and is configured to receive an aerosol precursor carrier for thermal interaction the heating surface. The heater comprises a heating element at the heating surface, and the heating surface comprises a fluid transport region adjacent the heating element. The fluid transport region is configured to move liquid across the heating surface towards the heating element.

First claim

The invention claimed is:

1. An aerosol-generation apparatus, the apparatus comprising a heater having a planar heating surface, and being configured to receive an aerosol precursor carrier for thermal interaction with said heating surface; wherein said heater comprises a heating element at said heating surface, and said heating surface comprises a fluid transport region adjacent said heating element; said fluid transport region being configured to move liquid across said heating surface towards the heating element.

2. The apparatus according to claim 1 , wherein said fluid transport region comprises hydrophobic material.

3. The apparatus according to claim 1 , wherein said fluid transport region comprises a plurality of elongate regions of hydrophobic material.

4. The apparatus according to claim 3 , wherein said elongate regions of hydrophobic material are substantially parallel.

5. The apparatus according to claim 3 , wherein said heating element is substantially linear, and said elongate regions of hydrophobic material are oriented substantially perpendicular to said heating element.

6. The apparatus according to claim 1 , wherein said fluid transport region comprises at least one capillary channel.

7. The apparatus according to claim 6 , wherein the at least one capillary channel is formed in said heating surface as an open groove.

8. The apparatus according to claim 6 , wherein said heating element is substantially linear, and the at least one capillary channel is oriented substantially perpendicular to said heating element.

9. The apparatus according to claim 6 , wherein said heating element intersects the or each at least one capillary channel.

10. The apparatus according to claim 1 , wherein said fluid transport region comprises a plurality of capillary channels.

11. The apparatus according to claim 10 , wherein said capillary channels are substantially parallel.

12. The apparatus according to claim 1 , wherein said fluid transport region comprises porous material.

13. The apparatus according to claim 12 , wherein said porous material is a porous ceramic.

14. The apparatus according to claim 12 , wherein said porous material is liquid-permeable.

15. The apparatus according to claim 14 , wherein said porous material is provided in the form of a layer positioned on an underlying layer of liquid-impermeable material.

16. The apparatus according to claim 12 , wherein said porous material extends beneath said heating element.

17. An aerosol-delivery system comprising: the aerosol-generation apparatus according to claim 1 , and said carrier; the carrier comprising a fluid-transfer article; wherein said fluid-transfer article comprises a first region for holding an aerosol precursor and for transferring said aerosol precursor to an activation surface of a second region of said article, said activation surface being disposed at an end of said carrier configured for thermal interaction with said heating surface; wherein said second region comprises at least one discontinuity in said activation surface to form a corresponding at least one air flow channel between said activation surface and said heating surface, said at least one air flow channel being configured to provide an airflow pathway across said activation surface.

18. The aerosol-delivery system according to claim 17 , wherein said heating element is substantially aligned with said at least one air flow channel formed by said at least one discontinuity in said activation surface.

19. The aerosol-delivery system according to claim 18 , the fluid transport region comprising at least one capillary channel, wherein said at least one capillary channel extends at least from an edge of a respective air flow channel to said heating element, the respective air flow channel being one of the at least one air flow channel.

20. The aerosol-delivery system according to claim 17 , the fluid transport region comprising a plurality of elongate regions of hydrophobic material, wherein each elongate region in the plurality of elongate regions of hydrophobic material extends at least from an edge of a respective air flow channel to said heating element, the respective air flow channel being one of the at least one air flow channel.

Assignees

• Nerudia Ltd

Inventors

• Sudlow Tom
• Lord Chris
• Jones David
• Shenton Edward Ross
• Illidge Ben
• Talbot Oliver
• Madden Alfred

Classifications

• A24F40/42 Primary

  Cartridges or containers for inhalable precursors · CPC title

• A61M11/04

  operated by the vapour pressure of the liquid to be sprayed or atomised {(air-humidification, e.g. "room humidifiers" F24F6/00)} · CPC title

• A24F40/44

  Wicks · CPC title

• A61M15/06 Primary

  Inhaling appliances shaped like cigars, cigarettes or pipes · CPC title

• A24F40/10

  Devices using liquid inhalable precursors · CPC title