Aerosol generating device with air flow nozzles

• US 10,272,170 B2
• Filed: 12/05/2012
• Issued: 04/30/2019
• Est. Priority Date: 12/08/2011
• Status: Active Grant

• Current Assignee: Philip Morris Products SA (Philip Morris Limited)
• Original Assignee: Philip Morris Products SA (Philip Morris Limited)
• Inventors: Dubief, Flavien
• Primary Examiner(s): Campbell, Thor S
• Application Number:
  US14/361,568
• Publication Number:
  US 20140334802A1
• Time in Patent Office: 2,337 Days
• Field of Search: 392386, 392390, 392396-398, 392402-404
• CPC Class Codes: A24F 40/10 Devices using liquid inhalable precursors
• CPC Class Codes: A24F 40/485 Valves; Apertures
• CPC Class Codes: A61L 9/03 Apparatus therefor

Abstract

There is provided an aerosol generating device, including a vaporizer for heating an aerosol-forming substrate to form an aerosol; a plurality of air flow nozzles; and at least one air outlet. The air flow nozzles and the air outlet are arranged to define an air flow route between the air flow nozzles and the air outlet. Each of the air flow nozzles includes an aperture arranged to direct air towards the vicinity of the vaporizer in a direction across the surface of the vaporizer so as to manage particle size in the aerosol.

Claims

1. An aerosol generating device, comprising:

a vaporizer configured to heat an aerosol-forming substrate;

a plurality of air flow vents; and

at least one air outlet,

the plurality of air flow vents and the at least one air outlet being arranged to define an air flow route between the plurality of air flow vents and the at least one air outlet,

wherein each of the plurality of air flow vents is an air inlet vent providing a first conduit for ambient air to be drawn into the aerosol generating device and being arranged to direct the air towards the vicinity of the vaporizer in a direction across a surface of the vaporizer and substantially perpendicular to a longitudinal axis of the device so as to manage particle size in an aerosol, and

wherein each of the air inlet vents has a diameter of less than or equal to 0.4 mm.

2. The aerosol generating device according to claim 1, wherein the air inlet vents direct the air in more than one direction.

3. The aerosol generating device according to claim 1, wherein at least one of the plurality of air flow vents includes a deviated portion.

4. The aerosol generating device according to claim 1, further comprising a housing, wherein the air inlet vents are formed in the housing.

5. The aerosol generating device according to claim 1, wherein, for a flow rate of 27.5 milliliters per second through the at least one air outlet, an air flow velocity through each of the air inlet vents is between 10 meters per second and 30 meters per second.

6. The aerosol generating device according to claim 1, further comprising:

a storage portion configured to store the aerosol-forming substrate; and

an elongate capillary body configured to convey the aerosol-forming substrate from the storage portion towards the vaporizer, the capillary body having a first end extending into the storage portion and a second end opposite the first end,

wherein the vaporizer is arranged to heat the aerosol-forming substrate in the second end of the capillary body.

7. The aerosol generating device according to claim 1, further comprising a secondary air inlet and an air flow sensor configured to measure air flow through the secondary air inlet, wherein a secondary air flow route is defined between the secondary air inlet and the at least one air outlet.

8. A cartridge, comprising:

a storage portion configured to store an aerosol-forming substrate;

a vaporizer configured to heat the aerosol-forming substrate;

a plurality of air flow vents; and

at least one air outlet,

the plurality of air flow vents and the at least one air outlet being arranged to define an air flow route between the plurality of air flow vents and the at least one air outlet,

wherein each of the plurality of air flow vents is an air inlet vent providing a first conduit for ambient air to be drawn into the cartridge and being arranged to direct the air towards the vicinity of the vaporizer in a direction across a surface of the vaporizer and substantially perpendicular to a longitudinal axis of the cartridge so as to manage particle size in an aerosol, and

wherein each of the air inlet vents has a diameter of less than or equal to 0.4 mm.

9. The cartridge according to claim 8, wherein the air inlet vents direct the air in more than one direction.

10. The cartridge according to claim 8, further comprising a housing, wherein the air inlet vents are formed in the housing.

11. The cartridge according to claim 8, wherein, for a flow rate of 27.5 milliliters per second through the at least one air outlet, an air flow velocity through each of the air inlet vents is between 10 meters per second and 30 meters per second.

12. The cartridge according to claim 8, wherein the vaporizer comprises an electric heater configured to heat the aerosol-forming substrate, the electric heater being connectable to an electric power supply.

13. An aerosol generating system, comprising:

a vaporizer configured to heat an aerosol-forming substrate;

a plurality of air flow vents; and

at least one air outlet,

the plurality of air flow vents and the air outlet being arranged to define an air flow route between the plurality of air flow vents and the air outlet,

wherein each of the plurality of air flow vents is an air inlet vent providing a first conduit for ambient air to be drawn into the aerosol generating system and being arranged to direct air towards the vicinity of the vaporizer and substantially perpendicular to a longitudinal axis of the system so as to manage particle size in an aerosol,

wherein the plurality of air flow vents direct air towards the vicinity of the vaporizer in more than one direction, and

wherein each of the plurality of air flow vents has a diameter of less than or approximately equal to 0.4 mm.