A beverage forming system that includes a capsule for containing beverage ingredients and having an outer surface; a capsule-based beverage producing device provided with a member for injecting a liquid under pressure into the capsule, a member for draining a beverage from the capsule, and an enclos
A beverage forming system that includes a capsule for containing beverage ingredients and having an outer surface; a capsule-based beverage producing device provided with a member for injecting a liquid under pressure into the capsule, a member for draining a beverage from the capsule, and an enclosing member transferable from an opened state to a defined closed state, in which the enclosing member encloses the outer surface of the capsule; and a sealing member associated with the capsule and which is compressible when engaged by the enclosing member in the closed state, wherein the sealing member is effective to compensate for the clearance between the enclosing member and the capsule which would otherwise exist when the enclosing member is in its defined closed state. Also, a method for producing a beverage using such a system.
대표청구항▼
1. A beverage producing system comprising: a capsule containing beverage ingredients and having a center axis; a cup-shaped body comprising a top wall and a sidewall having an outer surface, with the top wall and sidewall configured for defining a cavity that contains beverage forming ingredients th
1. A beverage producing system comprising: a capsule containing beverage ingredients and having a center axis; a cup-shaped body comprising a top wall and a sidewall having an outer surface, with the top wall and sidewall configured for defining a cavity that contains beverage forming ingredients therein; and with the sidewall including a rim-like flange forming a periphery of the sidewall, which flange includes transverse and axial extensions and a foil member sealed to the flange of the body to retain the beverage forming ingredients in the cavity;a capsule-based beverage producing device provided with a member for injecting a liquid under pressure into the capsule, a member for draining a beverage from the capsule, and an enclosing member that is movable from an opened state to a defined closed state, in which the enclosing member encloses the outer surface of the capsule; anda dedicated sealing member which is not part of the foil member and is present both on the rim of the flange opposite the foil member and on part of the outer surface of the sidewall of the body to form part of the capsule, which sealing member is compressible when engaged by the enclosing member in the closed state;wherein the sealing member is provided upon the transverse and axial extensions of the flange and extends to and upon the outer surface of the sidewall of the body such that when compressed by the enclosing member in the closed state provides a sealing engagement that compensates for clearances between the enclosing member and the capsule which would otherwise exist when the enclosing member is in its defined closed state such that the sealing member assures that the liquid can only flow through the capsule and in contact with the beverage ingredients to form a liquid beverage. 2. The system according to claim 1, wherein the sealing member is made of a material that is resilient under compression when it is engaged by the enclosing member in the closed state, providing a sealing pressure that has a radial or axial component relative to the center axis of the capsule. 3. The system according to claim 2, wherein the enclosing member and sealing member provide a sealing engagement that withstands a pressure in the range of 2 to 20 bars. 4. The system according to claim 1, wherein the enclosing member is arranged such that during a final phase of its movement from the opened to closed state, it carries out an essentially axial relative movement with regard to the capsule without a relative rotation of the capsule. 5. The system according to claim 1, wherein the enclosing member is arranged with regard to the capsule such that the capsule essentially stays in place during movement of the enclosing member to its defined closed state. 6. The system according to claim 1, wherein the sealing member is made of a compressible material, has the shape of a ring, and has a thickness that extends away from the flange such that the sealing member is exposed and arranged to exert a biasing force against a matching pressing surface of the beverage production device when the sealing member is contacted by the pressing surface so that the sealing member assures that the liquid cannot flow around the capsule. 7. The system according to claim 6, wherein the pressing surface has a linear or frustroconical contour when seen in a radial section view and a non-linear contour when seen in a side view. 8. The system according to claim 1, wherein the sealing member is made of a rubber-elastic material or is made from the same constituent material from which the capsule is made and has the shape of an O-ring or a ring having a L-shaped cross-section. 9. The system according to claim 1, further comprising first and second wall elements connected with each other in an airtight fashion in a flange-like rim area of the capsule in order to create a sealed interior for the capsule ingredients. 10. The system according to claim 9, wherein the sealing member is separate from the flange-like rim and is mounted thereupon. 11. The system according to claim 10, wherein the sealing member is attached to the flange-like rim using an adhesive, by welding, by pinching, by crimping or by any combination of such attachments. 12. The system according to claim 9, wherein the sealing member forms an integral part of the flange-like rim. 13. The system according to claim 1, wherein the sealing member has sufficient resiliency to withstand pressure exerted by the enclosing member on the capsule, and to automatically be released as soon as the pressure is relieved. 14. The system according to claim 1, wherein the enclosing member includes grooves about its circumference which act as air inlet passages for feeding air through the released sealing engagement between the capsule and the enclosing member. 15. The system according to claim 1, wherein the enclosing member comprises additional sealing member adapted to assist in the sealing engagement between the enclosing member and the capsule. 16. A method for producing a beverage using the beverage system of claim 1, which comprises: positioning the capsule containing beverage ingredients in the beverage production device,moving the enclosing member of the device from the open state to a defined closed state, while in the final phase of movement of the enclosing member engages and bias the sealing means of the capsule, with the sealing member providing a sealing engagement that compensates for clearances between the enclosing member and the capsule which would otherwise exist when the enclosing member is in the closed state; andinjecting a liquid under pressure into the capsule through at least one opening in a first wall member and having the liquid leave the capsule through at least one opening in a second wall member, such that the sealing member assures that the liquid can only flow through the capsule and in contact with the beverage ingredients to form a liquid beverage. 17. The method according to claim 16, wherein in the final phase of the transfer movement the enclosing member at least partially compresses the sealing member. 18. The method according to claim 16, wherein the enclosing member and the sealing member of the capsule provide a sealing engagement that withstands a pressure in the range of 2 to 20 bars. 19. A beverage producing system comprising: a capsule containing beverage ingredients and having a center axis, a cup-shaped body comprising a top wall and a sidewall having an outer surface, with the top wall and sidewall configured for defining a cavity that contains beverage forming ingredients therein; and with the sidewall including a rim-like flange forming a periphery of the sidewall, which flange includes transverse and axial extensions and a foil member sealed to the flange of the body to retain the beverage forming ingredients in the cavity;a capsule-based beverage producing device provided with a member for injecting a liquid under pressure into the capsule, a member for draining a beverage from the capsule, a capsule holder that supports the capsule, and an enclosing member that has a pressing surface and that is movable relative to the capsule holder from an opened state to a defined closed state in which the enclosing member encloses the outer surface of the capsule, wherein the pressing surface is provided with corrugations; anda dedicated sealing member which is not part of the foil member and is present both on the rim of the flange opposite the foil member and on part of the outer surface of the sidewall of the body to form part of the capsule, which sealing member is made of a rubber-elastic material, has the shape of a ring, is compressible and has a thickness that extends away from the flange and sidewall such that the sealing member is exposed so that it is contacted by the enclosing member when the enclosing member moves to the defined closed state, and further wherein the sealing member is compressed when engaged by the enclosing member in the closed state;wherein the sealing member is provided upon the transverse and axial extensions of the flange and extends to and upon the outer surface of the sidewall such that when compressed by the enclosing member in the closed state provides a sealing engagement that compensates for clearances between the enclosing member and the capsule which would otherwise exist when the enclosing member is in its defined closed state such that the sealing member assures that the liquid can only flow through but not around the capsule to contact the beverage ingredients to form a liquid beverage in the capsule. 20. A beverage producing system comprising: a capsule containing beverage-forming ingredients and having a center axis, a cup-like body comprising a top wall and sidewall having an outer surface, a rim-like flange forming a periphery of the body and which includes transverse and axial extensions, and a foil member sealed to the rim-like flange of the body for retaining the beverage ingredients in the body, the capsule further comprising a separate, dedicated sealing member which is not part of the foil member and is attached to the rim of the flange opposite the foil member and onto part of the outer surface of the sidewall of the body to form part of the capsule, which sealing member is made of a rubber-elastic material, has the shape of a ring having a L-shaped cross-section, is compressible and has a thickness that extends away from the flange and sidewall such that the sealing member is exposed so that it is contacted by the enclosing member when the enclosing member moves to the defined closed state, and further wherein the sealing member is compressed when engaged by the enclosing member in the closed state, wherein the sealing member is provided upon the transverse and axial extensions of the flange and extends to and upon the outer surface of the sidewall of the body;a capsule-based beverage producing device provided with a member for injecting a liquid under pressure into the capsule, a member for draining a beverage from the capsule, andan enclosing member for engaging the capsule in a defined closed state;wherein the sealing member is compressed when engaged by the enclosing member in the closed state, with the enclosing member being movable from an opened state to the defined closed state, in which the enclosing member engages the capsule in an effective fluidly sealed configuration in which the sealing member compensates for clearances between the enclosing member and the capsule which clearances would otherwise exist without the sealing member of the capsule when the enclosing member is in its defined closed state such that, when compressed by the enclosing member in the closed state, the sealing member assures that the liquid can only flow through but not around the capsule to contact the beverage ingredients to form a liquid beverage in the capsule; andwherein the device comprises a capsule holder having relief elements which are designed to tear the foil member of the capsule as soon as capsule pressure exceeds a threshold value to allow exit of the beverage from the capsule. 21. The system according to claim 20, wherein the sealing member is resilient under compression when it is engaged by the enclosing member in the closed state.
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