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1. (WO2017220808) CARTOUCHE DE DISPOSITIF À VAPOTER À MICROCANAUX OUVERTS
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

Claims

1 . A cartridge for an e-vaping device, the cartridge comprising:

a reservoir configured to hold a pre-vapor formulation;

a channel structure including a channel surface, the channel surface including a first channel surface portion and an adjacent second channel surface portion, the first channel surface portion defining at least one inner surface of the reservoir, the second channel surface portion being external to the reservoir;

the channel surface including at least one open-microchannel, the at least one open-microchannel extending between the first channel surface portion and the second channel surface portion;

the channel structure being configured to draw the pre-vapor formulation from the reservoir to the second channel surface portion based on capillary action of the pre-vapor formulation through the at least one open-microchannel; and

at least one heating element configured to vaporize the pre-vapor formulation drawn to the second channel surface portion to form a vapor.

2. The cartridge of claim 1 , wherein the at least one open-microchannel has a trapezoidal channel cross-section.

3. The cartridge of claim 1 or 2, wherein the channel structure includes a hydrophilic layer on the channel surface.

4. The cartridge of claim 1 , 2 or 3, wherein the heating element includes a surface heater.

5. The cartridge of any preceding claim, wherein the heating element is coupled to the second channel surface portion of the channel structure.

6. The cartridge of any preceding claim, wherein the reservoir includes a sealing element configured to substantially seal an interface between the reservoir and the second channel surface portion.

7. The cartridge of any preceding claim, further comprising:

a plurality of reservoirs, each of the reservoirs being configured to hold at least one pre-vapor formulation;

wherein the at least one open-microchannel includes a plurality of open-microchannels, each of the open-microchannels being in fluid communication with a separate reservoir of the plurality of reservoirs.

8. The cartridge of any preceding claim, wherein,

the reservoir is an annular structure configured to hold the pre-vapor within the annular structure;

the channel structure is a disc structure, the first channel surface portion is an outer annular portion of the channel surface and defines a base of the annular structure, and the second channel surface portion is an inner portion of the channel surface;

the at least one open-microchannel extends radially between the outer annular portion of the channel surface and the inner portion of the channel surface; and

the at least one heating element is coupled to the inner portion of the channel structure.

9. The cartridge of any of claims 1 to 7, wherein,

the channel structure includes a tubular structure;

the channel surface includes an outer surface of the tubular structure; and

the at least one open-microchannel extends axially along the outer surface of the tubular structure.

10. The cartridge of any preceding claim, wherein the channel structure is a molded structure.

1 1 . The cartridge of any preceding claim, further comprising:

a wicking material in contact with the second channel surface portion and the heating element, the wicking material being configured to draw pre-vapor formulation from the at least one open-microchannel in the second channel surface portion to the heating element.

12. An e-vaping device, comprising:

a cartridge for an e-vaping device, the cartridge including,

a reservoir configured to hold a pre-vapor formulation;

a channel structure including a channel surface, the channel surface including a first channel surface portion and an adjacent second channel surface portion, the first channel surface portion defining at least one inner surface of the reservoir, the second channel surface portion being external to the reservoir;

the channel surface including at least one open-microchannel, the at least one open-microchannel extending between the first channel surface portion and the second channel surface portion;

the channel structure being configured to draw the pre-vapor formulation from the reservoir to the second channel surface portion based on capillary action of the pre-vapor formulation through the at least one open-microchannel; and

at least one heating element configured to vaporize the pre-vapor formulation drawn to the second channel surface portion to form a vapor; and

a power supply configured to supply electrical power to the cartridge.

13. The e-vaping device of claim 12, wherein the at least one open-microchannel has a trapezoidal channel cross-section.

14. The e-vaping device of claim 12 or 13, wherein the channel structure includes a hydrophilic layer on the channel surface.

15. The e-vaping device of claim 12, 13 or 14, wherein the heating element includes a surface heater.

16. The e-vaping device of any of claims 12 to 15, wherein the heating element is coupled to the second channel surface portion of the channel structure.

17. The e-vaping device of any of claims 12 to 16, wherein the reservoir includes a sealing element configured to substantially seal an interface between the reservoir and the second channel surface portion.

18. The e-vaping device of any of claims 12 to 17, further comprising:

a plurality of reservoirs, each of the reservoirs being configured to hold at least one pre-vapor formulation;

wherein the at least one open-microchannel includes a plurality of open-microchannels, each of the open-microchannels being in fluid communication with a separate reservoir of the plurality of reservoirs.

19. The e-vaping device of any of claims 12 to 18, wherein

the reservoir is an annular structure configured to hold the pre-vapor within the annular structure;

the channel structure is a disc structure, the first channel surface portion is an outer annular portion of the channel surface and defines a base of the annular structure, and the second channel surface portion is an inner portion of the channel surface;

the at least one open-microchannel extends radially between the outer annular portion of the channel surface and the inner portion of the channel surface; and

the at least one heating element is coupled to the inner portion of the channel structure.

20. The e-vaping device of any of claims 12 to 18, wherein

the channel structure includes a tubular structure;

the channel surface includes an outer surface of the tubular structure; and

the at least one open-microchannel extends axially through the outer surface of the tubular structure.

21 . The e-vaping device of any of claims 12 to 20, wherein the channel structure is a molded structure.

22. The e-vaping device of any of claims 12 to 21 , wherein the power supply includes a rechargeable battery.

23. The e-vaping device of any of claims 12 to 22, wherein the cartridge and the power supply are removably connected together.

24. The e-vaping device of any of claims 12 to 23, wherein the cartridge further includes a wicking material in contact with the second channel surface portion and the heating element, the wicking material being configured to draw pre-vapor formulation from the at least one open-microchannel in the second channel surface portion to the heating element.

25. A method, comprising:

drawing a pre-vapor formulation from a reservoir to a heating element through at least one open-microchannel, the at least one open-microchannel including a first portion and a second portion, the first portion being in fluid communication with the reservoir, the second portion being coupled to the heating element; and

vaporizing the pre-vapor formulation drawn to the heating element through the at least one open-microchannel to form a vapor.

26. The method of claim 25, further comprising:

drawing the pre-vapor formulation to the heating element through a plurality of parallel open-microchannels.

27. The method of claim 25 or 26, further comprising:

drawing a plurality of pre-vapor formulations from a plurality of reservoirs to at least one heating element through a plurality of open-microchannels, each of the open-microchannels being in fluid communication with a separate reservoir of the plurality of reservoirs; and

vaporizing the pre-vapor formulations drawn to the at least one heating element through the plurality of open-microchannels to form at least one vapor.