Aerosol generating system with heated mixing chamber

Patent metadata

Field	Value
Publication number	US-12089645-B2
Application number	US-201916973365-A
Country	US
Kind code	B2
Filing date	Jun 11, 2019
Priority date	Jun 12, 2018
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A cartridge for an aerosol-generating system is provided, including a first compartment containing a nicotine source and having a first air inlet and first air outlet, the inlet being upstream of the outlet; a second compartment containing an acid source and having a second air inlet and second air outlet, the inlet being upstream of the outlet; a mixing chamber for mixing nicotine from the nicotine source and acid from the acid source with an air flow to form an aerosol, the mixing chamber being downstream of both the first air outlet and the second air outlet; and a heating element configured to heat the mixing chamber, at least a portion of the heating element being neither upstream nor downstream of the mixing chamber. An aerosol-generating system and a method for aerosol generation in an aerosol-generating system are also provided.

First claim

The invention claimed is:

1. A cartridge for an aerosol-generating system, the cartridge comprising:
a first compartment having a first air inlet and a first air outlet, the first air inlet being upstream of the first air outlet, the first compartment containing a nicotine source;
a second compartment having a second air inlet and a second air outlet, the second air inlet being upstream of the second air outlet, the second compartment containing an acid source;
a mixing chamber configured for mixing nicotine from the nicotine source in the first compartment and acid from the acid source in the second compartment with an air flow to form an aerosol, the mixing chamber being downstream of both the first air outlet of the first compartment and the second air outlet of the second compartment; and
a heating element configured to heat the mixing chamber,
wherein at least a portion of the heating element is neither upstream nor downstream of the mixing chamber,
wherein a first portion of the heating element is disposed adjacent to the first compartment or the second compartment, or both the first compartment and the second compartment, and a second portion of the heating element is disposed adjacent to, or within, the mixing chamber.

2. The cartridge according to claim 1 , wherein the heating element is further configured to heat the mixing chamber to a temperature of between 60 degrees Centigrade and 80 degrees Centigrade.

3. The cartridge according to claim 2 , wherein a temperature of the first compartment or a temperature of the second compartment, or both a temperature of the first compartment and a temperature of the second compartment, does not exceed 250 degrees Centigrade.

4. The cartridge according to claim 1 , wherein the heating element comprises a susceptor or an electrically resistive heating element, or both a susceptor and an electrically resistive heating element.

5. The cartridge according to claim 1 , wherein at least a portion of the mixing chamber is disposed between the first compartment and the second compartment.

6. The cartridge according to claim 1 , wherein the mixing chamber comprises one or more flow obstructions configured to change a flow direction of at least a portion of the air flow.

7. The cartridge according to claim 1 , wherein the heating element is an electrically resistive wire coil and at least a portion of the wire coil is disposed around at least a portion of the mixing chamber.

8. The cartridge according to claim 1 , wherein a first portion of the heating element is configured to heat the first compartment or the second compartment, or both the first compartment and the second compartment, and a second portion of the heating element is configured to heat the mixing chamber.

9. An aerosol-generating system, comprising:
a cartridge according to claim 1 ; and
an aerosol-generating device comprising a power supply, the power supply being configured to supply power to the heating element when the cartridge is engaged with the device.

10. The aerosol-generating system according to claim 9 , wherein the aerosol-generating device further comprises a second heating element, at least a portion of the second heating element being configured to heat the first compartment or the second compartment, or both the first compartment and the second compartment.

11. An aerosol-generating system, comprising:
a cartridge for the aerosol-generating system, the cartridge comprising:
a first compartment having a first air inlet and a first air outlet, the first air inlet being upstream of the first air outlet, the first compartment containing a nicotine source,
a second compartment having a second air inlet and a second air outlet, the second air inlet being upstream of the second air outlet, the second compartment containing an acid source,
a mixing chamber configured for mixing nicotine from the nicotine source and acid from the acid source with an air flow to form an aerosol, the mixing chamber being downstream of both the first air outlet of the first compartment and the second air outlet of the second compartment, and
a heating element configured to heat the mixing chamber; and

an aerosol-generating device comprising a housing and a power supply, the power supply being configured to supply power to the heating element,
wherein at least a portion of the cartridge is configured to engage the housing, and at least a portion of the heating element is neither upstream nor downstream of the mixing chamber,
wherein a first portion of the heating element is disposed adjacent to the first compartment or the second compartment, or both the first compartment and the second compartment, and a second portion of the heating element is disposed adjacent to, or within, the mixing chamber.

12. A cartridge for an aerosol-generating system, the cartridge comprising:
a first compartment containing a nicotine source;
a second compartment containing an acid source;
a mixing chamber configured for mixing nicotine from the nicotine source and acid from the acid source with an air flow to form an aerosol; and
a heating element configured to heat the mixing chamber,
wherein at least a portion of the heating element is configured to heat the mixing chamber to a temperature of between 60 degrees Centigrade and 80 degrees Centigrade,
wherein a first portion of the heating element is disposed adjacent to the first compartment or the second compartment, or both the first compartment and the second compartment, and a second portion of the heating element is disposed adjacent to, or within, the mixing chamber.

13. An aerosol-generating system, comprising:
a cartridge for use in the aerosol-generating system, the cartridge comprising:
a first compartment containing a nicotine source,
a second compartment containing an acid source, and
a mixing chamber configured for mixing nicotine from the nicotine source and acid from the acid source with an air flow to form an aerosol; and

an aerosol-generating device comprising a heating element and a housing,
wherein at least a portion of the cartridge is configured to engage the housing, and at least a portion of the heating element is configured to beat the mixing chamber to a temperature of between 60 degrees Centigrade and 80 degrees Centigrade,
wherein a first portion of the heating element is disposed adjacent to the first compartment or the second compartment, or both the first compartment and the second compartment, and a second portion of the heating element is disposed adjacent to, or within the mixing chamber.

14. A method for aerosol generation in an aerosol-generating system,
the aerosol-generating system comprising:
a cartridge for the aerosol-generating system, the cartridge comprising:
a first compartment containing a nicotine source,
a second compartment containing an acid source,
a mixing chamber configured for mixing nicotine from the nicotine source and acid from the acid source with an air flow to form an aerosol, and
a heater; and

an aerosol-generating device comprising a housing, wherein the housing is configured to engage at least a portion of the cartridge,
wherein the heater comprises a first portion and a second portion or wherein the heater comprises a first heating element and a second beating element; and

the method comprising:
supplying power to the heater such that the first portion of the heater heats the first compartment or the second compartment, or both the first compartment and the second compartment, and such that the second portion of the heater heats the mixing chamber, or
supplying power
to the first heating element such

Assignees

• Philip Morris Products Sa

Inventors

• Taurino Irene

Classifications

• B01F2035/99

  Heating · CPC title

• B01F35/92

  for heating the outside of the receptacle, e.g. heated jackets or burners · CPC title

• B01F25/4231

  using baffles · CPC title

• B01F23/211

  Methods · CPC title

• H05B6/108

  for heating a fluid · CPC title