Aerosol-generating system and a cartridge for an aerosol-generating system having a two-part liquid storage compartment

Patent metadata

Field	Value
Publication number	US-11696368-B2
Application number	US-201815903612-A
Country	US
Kind code	B2
Filing date	Feb 23, 2018
Priority date	Feb 24, 2017
Publication date	Jul 4, 2023
Grant date	Jul 4, 2023

Abstract

The cartridge includes a storage compartment configured to contain a liquid, the storage compartment having a first portion and a second portion connected to one another by a liquid channel. The cartridge includes an airflow passage passing between the first portion and the second portion of the storage compartment, and an aerosol-generating element that is fluid permeable and is positioned between the first portion and the second portion of the storage compartment, the aerosol-generating element having a first side and a second side that oppose each other, the first side of the aerosol-generating element forming part of the airflow passage and the second side of the aerosol-generating element being in contact with the liquid from the second portion of the storage compartment.

First claim

The invention claimed is:

1. A cartridge for an aerosol-generating system, the cartridge comprising:
a storage compartment configured to contain a liquid, the storage compartment having a first portion and a second portion connected to one another by a liquid channel, the liquid channel being configured to communicate the liquid from the first portion to the second portion;
an airflow passage passing between the first portion and the second portion of the storage compartment; and
an aerosol-generating element on an end of the second portion, the aerosol-generating element being fluid permeable, the aerosol-generating element having a first side and a second side that oppose each other, the first side forming part of the airflow passage that is between the first portion and the second portion, the second side being in contact with the liquid from the second portion of the storage compartment, the storage compartment and liquid channel being configured to allow the liquid in the first portion to pass to the second portion through the liquid channel while the cartridge is in operational use.

2. The cartridge of claim 1 , wherein the first portion of the storage compartment has a larger liquid storage capacity than the second portion of the storage compartment.

3. The cartridge of claim 1 , wherein the second portion of the storage compartment contains a capillary material in contact with the second side of the aerosol-generating element.

4. The cartridge of claim 1 , wherein the cartridge further comprises:
a housing having a connection end and a mouth end remote from the connection end, the connection end configured to connect to a control body of an aerosol-generating system, the second side of the aerosol-generating element facing the connection end and the first side of the aerosol-generating element facing the mouth end.

5. The cartridge of claim 4 , wherein the aerosol-generating element is closer to the connection end than to the mouth end.

6. The cartridge of claim 1 , further comprising:
a housing defining an air inlet; and
a mouthpiece portion having a mouth end opening, the airflow passage extending from the air inlet, between the first portion and the second portion of the storage compartment, to the mouth end opening, wherein the first portion of the storage compartment is positioned between the aerosol-generating element and the mouth end opening.

7. The cartridge of claim 1 , wherein the first side and the second side of the aerosol-generating element are planar.

8. The cartridge of claim 1 , wherein the aerosol-generating element is a heating element, the heating element defining a fluid passage that is at least one of a plurality of interstices and apertures, the fluid passage extending through the heating element.

9. The cartridge of claim 8 , further comprising:
a heater assembly, the heater assembly including,
the heating element, and
electrical contacts, the electrical contacts electrically connected to the heating element.

10. The cartridge of claim 9 , wherein the electrical contacts are exposed through a connection end of the cartridge.

11. The cartridge of claim 9 , wherein the storage compartment further comprises:
a heater mount, the heater mount being molded over the heater assembly.

12. The cartridge of claim 1 , wherein the first portion of the storage compartment, the second portion of the storage compartment and the liquid channel is configured to allow the liquid in the first portion of the storage compartment to reach the aerosol-generating element only through the second portion of the storage compartment.

13. An aerosol-generating system, comprising:
a cartridge including,
a storage compartment configured to contain a liquid, the storage compartment having a first portion and a second portion connected to one another by a liquid channel, the liquid channel being configured to communicate the liquid from the first portion to the second portion;
an airflow passage passing between the first portion and the second portion of the storage compartment; and
an aerosol-generating element on an end of the second portion, the aerosol-generating element being fluid permeable, the aerosol-generating element having a first side and a second side that oppose each other, the first side forming part of the airflow passage that is between the first portion and the second portion, the second side being in contact with the liquid from the second portion of the storage compartment, the storage compartment and liquid channel being configured to allow the liquid in the first portion to pass to the second portion through the liquid channel while the aerosol-generating system is in operational use; and

a control body connected to the cartridge, the control body configured to control a supply of electrical power to the aerosol-generating element.

14. The aerosol-generating system of claim 13 , further comprising:
a first pair of electrical contacts in the control body; and
a second pair of electrical contacts in the cartridge, the first and second pair of electrical contacts being configured to electrically connect the control body to the aerosol-generating element.

15. The aerosol-generating system of claim 13 , wherein the aerosol- generating system is a handheld aerosol-generating system.

16. The cartridge of claim 1 , wherein the storage compartment and liquid channel are configured to allow the liquid in the first portion to pass to the second portion through the liquid channel, at least in part due to gravity, while the cartridge is in operational use.

17. The aerosol-generating system of claim 13 , wherein the storage compartment and liquid channel are configured to allow the liquid in the first portion to pass to the second portion through the liquid channel, at least in part due to gravity, while the cartridge is in operational use.

Assignees

• Altria Client Services Llc

Inventors

• Silvestrini Patrick Charles
• Zinovik Ihar Nikolaevich
• Frederick Guillaume

Classifications

• A24F40/10

  Devices using liquid inhalable precursors · CPC title

• A24F40/42

  Cartridges or containers for inhalable precursors · CPC title

• H05B1/0227 Primary

  Applications · CPC title

• H05B2203/021

  Heaters specially adapted for heating liquids · CPC title

• H05B3/44

  heating conductor arranged within rods or tubes of insulating material · CPC title