LAMINAR EVAPORATOR

• US 20130081623A1
• Filed: 03/10/2011
• Published: 04/04/2013
• Est. Priority Date: 03/10/2010
• Status: Active Grant

• Current Assignee: Nicoventures Trading Ltd. (British American Tobacco PLC)
• Original Assignee: Batmark Limited (British American Tobacco PLC)
• Inventors: Buchberger, Helmut
• Granted Patent: US 9,555,199 B2
• Time in Patent Office: Days
• US Class Current: 128/203.27
• CPC Class Codes: A24F 40/10 Devices using liquid inhalable precursors
• CPC Class Codes: A24F 40/44 Wicks
• CPC Class Codes: A24F 40/46 Shape or structure of electric heating means
• CPC Class Codes: A61M 11/041 using heaters
• CPC Class Codes: A61M 11/042 electrical
• CPC Class Codes: A61M 15/00 Inhalators drug delivery in endotracheal tubes A61M16/04
• CPC Class Codes: A61M 2205/3653 by Joule effect, i.e. electric resistance
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: H05B 2203/021 Heaters specially adapted for heating liquids

Abstract

The invention disclosure relates to a laminar evaporator, comprising a laminar electrical resistance heating element for pulse heating and evaporation of an inhalationally receivable material distributed or distributable on the heating element surface by means of an electric heating current flowing or flowable in a laminar manner with at least two electrical contacts and/or poles (2, 3) for introducing the filament current into the resistance heating element, where the resistance heating element has at least one slot-shaped recess (5) constricting the lines of flux (4) of the original electric field forming or formable between the poles (2, 3) and is superficially bonded with an open-celled porous structure holding or capable of holding the material.

Claims

1. Laminar evaporator, comprising a laminar electrical resistance heating element for pulse heating and evaporation of an inhalationally receivable material distributed or distributable on the heating element surface by means of an electric heating current flowing or flowable in a laminar manner with at least two electrical contacts and/or poles for introducing the heating current into the resistance heating element, characterised in that the resistance heating element has at least one slot-shaped recess constricting the lines of flux of the original electric field forming or formable between the poles and is superficially bonded with an open-celled porous structure holding or capable of holding the material.

2. Laminar evaporator in accordance with claim 1, wherein the porous structure consists of an electrically resistant material and the slot-shaped recess also penetrates the porous structure.

3. Laminar evaporator in accordance with claim 2, wherein the resistance heating element is formed entirely by the porous structure.

5. Laminar evaporator in accordance with claim 1, wherein the slot-shaped recess consists of a cut.

6. Laminar evaporator in accordance with claim 5, wherein the resistance heating element and the porous structure consist of a metallic resistance material.

8. Laminar evaporator in accordance with claim 1, wherein a plurality of slot-shaped recesses.

11. Inhaler component, comprising at least one laminar evaporator in accordance with claim 1.

4. Laminar evaporator in accordance with 1, wherein the slot-shaped recess runs essentially in a straight line and is aligned at least approximately at right angles to the lines of flux of the original electric field constricted by it.

7. Laminar evaporator in accordance with 1, wherein several slot-shaped recesses.

9. Laminar evaporator in accordance with claim 7, wherein the slot-shaped recesses are unevenly closely distributed on the heating element surface.

10. Laminar evaporator in accordance with claim 7, wherein the porous structure forms a wick.

12. Inhaler component, comprising a laminar evaporator in accordance with claim 10 further comprising a source of liquid, communicating and/or capable of communicating via capillary with the wick to supply the wick with the liquid substance wherein the wick is supplied with the liquid substance in the direction of the lines of flux of the original electric field and the slotshaped recesses are arranged staggered one behind the other in a row aligned essentially parallel to the lines of flux.

13. Inhaler component, comprising a laminar evaporator in accordance with claim 10 further comprising a source of liquid communicating and/or capable of communicating via capillary with the wick to supply the wick with the liquid substance, wherein the wick is fed transverse to the lines of flux of the original electric field with the liquid substance and the slot-shaped recesses point essentially in the direction of filling.