Aerosol-generating system including a cartridge containing a gel and a device for heating the cartridge

Patent metadata

Field	Value
Publication number	US-11291248-B2
Application number	US-201715662472-A
Country	US
Kind code	B2
Filing date	Jul 28, 2017
Priority date	Jul 29, 2016
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

An aerosol-generating system may include a device body and a cartridge configured to be removably inserted into or connected to the device body. The device body may include a power supply and an electrical heater connected to the power supply. The cartridge contains an aerosol-forming substrate in the form of a thermoreversible gel that is a solid at room temperature.

First claim

The invention claimed is:

1. An aerosol-generating system comprising:
a device body including a power supply and an electrical heater, the electrical heater electrically connected to the power supply;
a cartridge containing an aerosol-forming substrate in an interior of a container, the aerosol-forming substrate in a form of a thermoreversible gel that is a solid at room temperature, the cartridge configured to be removably inserted into or connected to the device body, the container having a first end and a second end and at least one airflow channel on an exterior of the container on at least one side of the container extending between the first end and the second end, the container defining a slot, at least one surface of the slot including a susceptor material, and the slot is a blind slot; and
the electrical heater is an induction heater configured to heat the aerosol-forming substrate using an alternating magnetic field and the susceptor material.

2. The aerosol-generating system according to claim 1 , wherein the electrical heater does not contact the aerosol-forming substrate when the cartridge is inserted into or connected to the device body.

3. The aerosol-generating system according to claim 1 , wherein the container includes at least one wall between the electrical heater and the aerosol-forming substrate when the cartridge is inserted into or connected to the device body.

4. The aerosol-generating system according to claim 1 , wherein the container includes at least one wall in thermal contact with the electrical heater when the cartridge is inserted into or connected to the device body.

5. The aerosol-generating system according to claim 1 , wherein the container includes at least one liquid impermeable and vapor impermeable external wall defining a blind cavity in the interior of the container, and the aerosol-forming substrate is contained in the blind cavity.

6. The aerosol-generating system according to claim 5 , wherein the cartridge includes a sealing element sealing the blind cavity.

7. The aerosol-generating system according to claim 1 , wherein the device body includes a mouthpiece portion separate from the cartridge.

8. The aerosol-generating system according to claim 1 , wherein the cartridge defines a first chamber and a second chamber separate from the first chamber.

9. The aerosol-generating system according to claim 8 , wherein at least a portion of the electrical heater is positioned between the first and second chambers when the cartridge is inserted into or connected to the device body.

10. The aerosol-generating system according to claim 1 , wherein the thermoreversible gel includes a source of nicotine or a tobacco product.

11. The aerosol-generating system according to claim 1 , wherein
the first end includes at least one air inlet communicating between the interior and the exterior of the container, and
the container in the cartridge defines an airflow passage from the second end of the container through the at least one airflow channel and through the at least one air inlet.

12. A cartridge for an aerosol-generating system including a device body and a heater, the cartridge comprising:
a substrate container containing an aerosol-forming substrate in an interior of the substrate container, the aerosol-forming substrate in a form of a thermoreversible gel that is a solid at room temperature,
the substrate container configured to removably connect to or be received in the device body of the aerosol-generating system,
the substrate container defining a slot configured to receive the heater, the slot including at least one surface including a susceptor material, and the slot is a blind slot,
the substrate container having a first end and a second end and at least one airflow channel on an exterior of the substrate container on at least one side of the substrate container extending between the first end and the second end, and
the heater is an induction heater configured to heat the substrate container using an alternating magnetic field and the susceptor material.

13. The cartridge according to claim 12 , wherein the substrate container includes at least one liquid impermeable and vapour impermeable external wall defining a blind cavity in the interior of the substrate container, and the aerosol-forming substrate is contained in the blind cavity.

14. The cartridge according to claim 12 , further comprising:
a mouthpiece tube holding the substrate container.

15. The cartridge according to claim 14 , wherein the mouthpiece tube includes an air flow restrictor.

16. The cartridge according to claim 12 , wherein
the first end includes at least one air inlet communicating between the interior and the exterior of the substrate container, and
the substrate container in the cartridge defines an airflow passage from the second end of the substrate container through the at least one airflow channel and through the at least one air inlet.

Assignees

• Altria Client Services Llc

Inventors

• Zuber Gerard
• VOLLMER Jean-Yves

Classifications

• H05B2203/021

  Heaters specially adapted for heating liquids · CPC title

• H05B1/0247

  For chemical processes · CPC title

• H05B3/10

  Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor · CPC title

• A24F40/40

  Constructional details, e.g. connection of cartridges and battery parts · CPC title

• B65D83/141

  specially adapted for specific contents or propellants · CPC title