Shaped heater for an aerosol generating system

• US 10,306,707 B2
• Filed: 09/06/2016
• Issued: 05/28/2019
• Est. Priority Date: 12/30/2009
• Status: Active Grant

• Current Assignee: Philip Morris USA Incorporated (Altria Group, Inc.)
• Original Assignee: Philip Morris USA Incorporated (Altria Group, Inc.)
• Inventors: Greim, Olivier, Fernando, Felix, Higgins, Charles
• Primary Examiner(s): Campbell, Thor S
• Application Number:
  US15/256,985
• Publication Number:
  US 20160374145A1
• Time in Patent Office: 994 Days
• Field of Search: None
• CPC Class Codes: A24F 40/20 Devices using solid inhalable precursors
• CPC Class Codes: A24F 40/46 Shape or structure of electric heating means
• CPC Class Codes: A24F 40/70 Manufacture
• CPC Class Codes: F24H 1/0018 using electric energy supply
• CPC Class Codes: H05B 2203/017 Manufacturing methods or apparatus for heaters
• CPC Class Codes: H05B 3/0019 Circuit arrangements
• CPC Class Codes: H05B 3/46 heating conductor mounted on insulating base

Abstract

A heater for heating an aerosol-forming substrate includes a plurality of elongate heating elements arranged in an elongate array. The elongate array has a support end with a first dimension, a heating end with a second dimension and a middle portion with a third dimension. The array is arranged to heat the substrate to form an aerosol. The third dimension is greater than the first dimension and greater than the second dimension. An electrically heated aerosol generating system can include the heater.

Claims

1. A method, comprising:

flat stamping an individual sheet of heating element material to form heating elements, each of the heating elements including a first end and a second end that is opposite to the first end;

coupling the first end of each of the heating elements to a linking element so that the heating elements are electrically and mechanically coupled together, the linking element being substantially straight, the coupled heating elements being substantially parallel to each other;

bending the linking element into a substantially circular shape, such that opposite ends of the linking element are coupled together;

coupling the heating elements to a collar element to establish an electrical connection between the heating elements and the collar element, the coupling of the heating elements to the collar element including,

forming a plurality of slots in the collar element, and

inserting the heating elements into the slots; and

electrically coupling the collar element to a voltage source.

2. The method of claim 1, wherein the linking element extends substantially perpendicularly to the heating elements.

3. The method of claim 1, wherein the coupling the first end of each of the heating elements to the linking element includes spot welding each heating element to the linking element.

4. The method of claim 1, wherein coupling opposite ends of the linking element together includes welding the opposite ends together.

5. The method of claim 1, wherein the flat stamping includes applying a stamp to the individual sheet of heating element material, the stamp configured to form the heating elements to be substantially parallel based on flat stamping the individual sheet of heating element material.

6. The method of claim 1, wherein the forming the plurality of slots includes applying a laser to the collar element.

7. The method of claim 1, further comprising:

coupling the second end of each of the heating elements to a common pin.

8. The method of claim 1, wherein at least two of the heating elements are electrically coupled in series with the voltage source.

9. A method, comprising:

flat stamping an individual sheet of heating element material to form heating elements each of the heating elements including a first end and a second end that is opposite to the first end;

first coupling the first ends of each of the heating elements together so that the heating elements are substantially parallel to each other; and

second coupling the second ends of each of the heating elements to a voltage source, the first coupling and the second coupling causing the heating elements to be mechanically and electrically connected to each other, the second coupling including,

forming a plurality of slots in a collar element, and

inserting the second ends of the heating elements into separate, respective slots of the plurality of slots.

10. The method of claim 9, wherein the second coupling includes electrically coupling at least two of the heating elements in series with the voltage source.

11. The method of claim 9, wherein the first coupling the includes connecting the first ends of each of the heating elements to a common linking element.

12. The method of claim 11, wherein the common linking element extends substantially perpendicularly to the heating elements.

13. The method of claim 11, wherein the first coupling includes spot welding the first end of each of the heating elements to the common linking element.

14. The method of claim 11, wherein the first coupling further includes welding opposite ends of the common linking element together.

15. The method of claim 9, wherein the flat stamping includes,

applying a stamp to the individual sheet of heating element material, the stamp configured to form the heating elements to be substantially parallel based on flat stamping the individual sheet of heating element material.

16. The method of claim 9, wherein the second coupling includes, electrically coupling the collar element to the voltage source.

17. The method of claim 9, wherein the forming the plurality of slots includes applying a laser to the collar element.

18. The method of claim 9, further comprising:

third coupling the second ends of each of the heating elements to a common pin, the common pin extending at least between the second ends of each of the heating elements and the first ends of each of the heating elements.

19. The method of claim 9, wherein the first coupling and the second coupling can occur in any order or at a same time.