Inhaler component

• US 10,045,562 B2
• Filed: 01/09/2015
• Issued: 08/14/2018
• Est. Priority Date: 10/21/2011
• Status: Active Grant

• Current Assignee: Nicoventures Trading Ltd. (British American Tobacco PLC)
• Original Assignee: Batmark Limited (British American Tobacco PLC)
• Inventors: Buchberger, Helmut
• Primary Examiner(s): CAMPBELL, THOR S
• Application Number:
  US14/594,065
• Publication Number:
  US 20150114411A1
• Time in Patent Office: 1,313 Days
• Field of Search: 12820221, 12820014, 12820317, 12820327, 392386-407
• CPC Class Codes: A24D 3/17 Filters specially adapted for simulated smoking devices
• CPC Class Codes: A24F 40/10 Devices using liquid inhalable precursors
• CPC Class Codes: A24F 40/40 Constructional details, e.g. connection of cartridges and battery parts
• CPC Class Codes: A61L 9/037 comprising a wick
• CPC Class Codes: A61M 11/041 using heaters
• CPC Class Codes: A61M 11/042 electrical
• CPC Class Codes: A61M 15/06 Inhaling appliances shaped like cigars, cigarettes or pipes
• CPC Class Codes: A61M 2205/8206 battery-operated

Abstract

This disclosure relates to an inhaler component for the formation of a vapor-air mixture and/or a condensation aerosol by evaporation of a liquid material and optionally the condensation of the formed vapor. In one example, the inhaler component includes an electrical heater to evaporate liquid, a capillary wick that together with the electrical heater defines a compound structure that supplies liquid to the electrical heater, and a carrier supporting the compound structure. The carrier makes electrical contact with the electrical heater, and at least partially defines a portion of a capillary gap. The capillary gap is in fluid communication with the wick and automatically supplies liquid to the compound structure. Internal and external sides or faces of the carrier (relative to the compound structure) can define portions of the capillary gap.

Claims

1. An apparatus, comprising:

an inhaler component, the inhaler component including;

an electrical heater configured to evaporate liquid;

a capillary wick, the capillary wick and the electrical heater defining a compound structure configured to automatically supply liquid to the electrical heater;

a carrier supporting the compound structure and making electrical contact with the electrical heater, the carrier at least partially defining a portion of a capillary gap, the capillary gap in fluid communication with the wick and configured to automatically supply liquid to the compound structure; and

a liquid container, wherein a portion of a surface of the liquid container at least partially defines a portion of the capillary gap.

2. The apparatus according to claim 1, wherein a portion of a surface of the carrier, distal relative to the compound structure, at least partially defines a portion of the capillary gap.

3. The apparatus according to claim 2, wherein a portion of the surface of the carrier, proximal relative to the compound structure, at least partially defines a portion of the capillary gap.

4. The apparatus according to claim 1, wherein the capillary gap at least partially surrounds a portion of the carrier.

5. The apparatus according to claim 1, wherein more than half of the surface of the carrier at least partially defines a portion of the capillary gap.

6. The apparatus according to claim 1, further including a housing.

7. The apparatus according to claim 6, wherein a portion of the capillary gap is at least partially defined by a surface of the housing.

8. The apparatus according to claim 1, wherein at least a portion of a surface defining a portion of the capillary gap is a hydrophilic surface.

9. The apparatus of claim 8, wherein the hydrophilic surface is at least one of an oxygen-plasma treated hydrophilic surface and/or a plasma polymerization treated hydrophilic surface.

10. The apparatus of claim 1, further comprising a flow throttle configured to, in use, provide flow resistance to air passing therethrough.

11. The apparatus of claim 10, wherein the flow throttle is a fiber compound structure.

12. The apparatus of claim 10, wherein the flow throttle is configured to provide flow resistance in the range of 8-16 mbar for a flow rate of 1.05 L/min.

13. An inhaler component, comprising:

a housing;

an electrical heater configured to evaporate liquid;

a capillary wick, the capillary wick and the electrical heater forming a compound structure configured to automatically supply liquid to the electrical heater;

a carrier supporting the compound structure and making electrical contact with the electrical heater, the carrier at least partially defining a portion of a capillary gap and configured to automatically supply liquid to the compound structure via a portion of the capillary wick that extends into the capillary gap; and

a liquid container, wherein a portion of a surface of the liquid container at least partially defines a portion of the capillary gap.

14. The inhaler component according to claim 13, wherein a portion of a surface of the carrier and a wall of the housing together at least partially define a capillary gap portion.

15. The inhaler component according to claim 14, wherein a portion of the surface of the carrier distal to the housing at least partially defines a capillary gap portion.

16. The inhaler component according to claim 13, wherein at least a portion of a surface defining a capillary gap portion is a hydrophilic surface.

17. The inhaler component of claim 13, further comprising:

a suction snorkel at an end of the inhaler component opposite a mouthpiece end of the inhaler component; and

a flow throttle disposed within the suction snorkel and configured to provide flow resistance to air passing through when the inhaler component is in use.

18. The inhaler component of claim 17, wherein the flow resistance provided by the flow throttle is from 8 mbar to 16 mbar for a flow rate of 1.05 L/min.