A single-use capsule for preparing a food liquid from a food substance contained therein. The capsule has an upper wall, a lower wall, and a side wall connecting the upper and lower walls, wherein the walls form an enclosure that contains the food substance. The capsule also has a sealed interface c
A single-use capsule for preparing a food liquid from a food substance contained therein. The capsule has an upper wall, a lower wall, and a side wall connecting the upper and lower walls, wherein the walls form an enclosure that contains the food substance. The capsule also has a sealed interface connecting the upper and lower walls and a liquid collecting cavity located between the side wall and sealed interface. The sealed interface is configured to open under a predetermined fluid pressure in the capsule to allow the food liquid to leave the capsule. Also, a method for preparing a food liquid from the capsule by passing water through the food substance using centrifugal forces for producing the food liquid.
대표청구항▼
1. A single-use capsule for preparing a food liquid from a food substance contained in the capsule, comprising: an upper wall,a lower wall,side walls attached respectively to the upper and lower walls, wherein the upper, lower and side walls form an enclosure that contains a predetermined amount of
1. A single-use capsule for preparing a food liquid from a food substance contained in the capsule, comprising: an upper wall,a lower wall,side walls attached respectively to the upper and lower walls, wherein the upper, lower and side walls form an enclosure that contains a predetermined amount of the food substance,a sealed interface connecting the side walls;a food liquid collecting cavity located between the side walls and sealed interface; anda filter which separates the food substance from the liquid collecting cavity, wherein the filter comprises a porous tubular member which forms a support ring in contact with the upper and lower walls for maintaining the upper and lower walls at a predetermined distance and which filters the food liquid before the food liquid enters the collecting cavity;wherein the sealed interface is configured to allow the food liquid to leave the capsule from the collecting cavity through one or more openings in the interface upon application of a predetermined fluid pressure in the capsule. 2. The capsule of claim 1, wherein the sealed interface opens as a result of the fluid pressure forming one or more outlets in the sealed interface for allowing the food liquid to leave the capsule. 3. The capsule of claim 2, wherein the fluid pressure opens the sealed interface to provide a continuous peripheral slot through which the food liquid leaves the capsule. 4. The capsule of claim 1, wherein the sealed interface comprises two enclosing members associated with the upper and lower walls respectively with the members connected at a sealed junction. 5. The capsule of claim 4, wherein at least one of the two enclosing members is provided with a plurality of discrete radially oriented channels of controlled dimensions that when subject to the fluid pressure allow the food liquid to leave the capsule. 6. The capsule of claim 5, wherein the plurality of channels are arranged symmetrically about the sealed interface of the capsule. 7. The capsule of claim 1, wherein the side wall comprises flow restriction means that maintains the pressure in the food substance to retard the release of the food liquid. 8. The capsule of claim 1, wherein the sealed interface forms a circular perimeter for the capsule. 9. The capsule of claim 8, wherein the side wall is substantially perpendicular to the upper and lower walls. 10. The capsule of claim 9, wherein the side wall is substantially cylindrical to form with the upper and lower walls a disc shaped cavity that holds the food substance therein. 11. The capsule of claim 10 wherein the sealed interface is located in a central portion of the sidewall and includes one or more openings sealed by a removable membrane which is to be removed prior to use. 12. The capsule of claim 11 wherein the removable membrane is configured as a band that is attached to the capsule exterior adjacent the one or more openings. 13. The capsule of claim 1, wherein the food substance comprises ground coffee. 14. The capsule of claim 1, further comprising a flow restriction structure that retards the food liquid that is attempting to leave the capsule. 15. A method for preparing a food liquid from a food substance contained in the capsule of claim 1, which comprises introducing water into the capsule; passing the water through the food substance using centrifugal forces for producing the food liquid which is centrifuged peripherally in the capsule relatively to a central axis of the capsule corresponding to an axis of rotation during the centrifugation, and delivering the food liquid from the capsule through the interface from the application of the fluid pressure in the capsule to allow the food liquid to leave the capsule through the opened interface. 16. The method of claim 15, wherein the sealed interface opens in response to the predetermined fluid pressure to form one or more outlets for the food liquid. 17. The method of claim 15, wherein the sealed interface opens in response to the predetermined fluid pressure to provide a continuous peripheral slot through which the food liquid leaves the capsule. 18. The method of claim 15, wherein the sealed interface comprises two enclosing members associated with the upper and lower walls respectively with the members connected at a sealed junction and which further comprises providing at least one of the enclosing members with a plurality of discrete radially oriented channels of controlled dimensions that fonn discrete liquid outlets of controlled size in response to the predetermined fluid pressure. 19. The method of claim 15, wherein the capsule is designed to cooperate with a centrifugal capsule rotation device that includes engaging surfaces, wherein the sealed interface comprises two enclosing members associated with the upper and lower walls respectively with the members connected at a sealed junction, and wherein the method further comprises controlling outlet size during opening by the engaging surfaces of the device. 20. The method of claim 19, which further comprises fixing or spring biasing the engaging surfaces to control the degree of opening of the outlets as a function of the rotational speed of the device. 21. The method of claim 15 wherein the side wall comprises flow restriction means that maintains the pressure in the food substance to retard the release of the food liquid. 22. The method of claim 15 wherein the side wall comprises a filter of a porous tubular member to filter the food liquid before the food liquid leaves the capsule. 23. The method of claim 15, which further comprises retarding the food liquid that is attempting to leave the capsule by including in the capsule flow restriction means. 24. The method of claim 15 wherein the food substance comprises ground coffee and the food liquid comprises coffee having a crema that is more creamier and more stable with a thicker texture that non-centrifugally prepared coffee.
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