초록 ▼

An infusion unit includes a support and a drawer having at least one seat for a single-serving sachet, the seat sliding relative to the support and movable between a charging position of the single-serving sachet and an infusion position. The infusion unit further includes a dispensing member for di

An infusion unit includes a support and a drawer having at least one seat for a single-serving sachet, the seat sliding relative to the support and movable between a charging position of the single-serving sachet and an infusion position. The infusion unit further includes a dispensing member for dispensing water under pressure to the single-serving sachet. A lever controls the movement of the drawer and a mechanical connection between the lever and the drawer and between the lever and the dispensing member. A stopping element locks the single-serving sachet into the infusion position after the dispensing. The seat, partly delimited by a pair of arms oscillating relative to the drawer, is interchangeable for seating capsules of various shapes or dimensions.

대표청구항 ▼

1. An infusion unit for making a beverage with single-serving sachets, comprising: a support;a drawer including a removable seat for a single-serving sachet, the removable seat being removable form the drawer and the drawer being slideable relative to said support and movable between a charging posi

1. An infusion unit for making a beverage with single-serving sachets, comprising: a support;a drawer including a removable seat for a single-serving sachet, the removable seat being removable form the drawer and the drawer being slideable relative to said support and movable between a charging position of the single-serving sachet and an infusion position;a dispensing member for dispensing water under pressure to said single-serving sachet;a lever for controlling movement of said drawer and a mechanical connection between said lever and said drawer and between said lever and said dispensing member, actuation of the lever causing the movement of the drawer from the charging position to the infusion position and approach of the dispensing member to the single-serving sachet; anda stopping element for locking the single-serving sachet into the infusion position, preventing movement of the single-serving sachet towards the charging position when said drawer is moved from the infusion position to the charging position;wherein said removable seat is partly delimited by a pair of arms oscillating relative to said drawer for allowing removal of empty single-serving sachets from said removable seat during the drawer movement from the infusion position to the charging position, and wherein said dispensing member comprises a sealing member movable towards the single-serving sachet, when said dispensing member is in the infusion position, under a thrust of water under pressure for adjusting to a front surface of the single-serving sachet and forming a seal on the front surface. 2. The infusion unit according to claim 1, wherein said removable seat is further partly delimited by a wall, and wherein said wall and said pair of arms are removably applied to said drawer. 3. The infusion unit according to claim 2, wherein said wall and said pair of arms together form a surface with a shape corresponding to a shape of an outer side surface of the single-serving sachets, and wherein the wall faces backward and the arms face forward relative to the drawer moving from the charging position to the infusion position. 4. The infusion unit according to claim 1, wherein movements of said dispensing member and of said drawer are coordinated with each other, and wherein the dispensing member moves toward the single-serving sachet when said single-serving sachet moves to the infusion position by movement said drawer. 5. The infusion unit according to claim 1, wherein said arms are oscillating about respective axes substantially orthogonal to the movement of said drawer. 6. The infusion unit according to claim 1, wherein said arms are substantially symmetrical relative to the movement direction of said drawer. 7. The infusion unit according to claim 1, further comprising means for controlling the movement of said arms towards a closed position. 8. The infusion unit according to claim 7, wherein said control means and said oscillating arms are pushed towards an open position by the empty single-serving sachet retained into infusion position, during the drawer movement from the infusion position to the charging position. 9. The infusion unit according to claim 1, wherein said stopping element comprises a sheet element integral to the support, wherein the sheet element allows passage of the single-serving sachet towards the infusion position and prevents the passage of the single serving sachet from the infusion position to the charging position. 10. The infusion unit according to claim 1, further comprising a lock for the drawer movement, said lock preventing a movement of the drawer during an infusion of the water through the single-serving sachet in the infusion position. 11. The infusion unit according to claim 10, wherein said lock of the drawer movement is controlled by said lever. 12. The infusion unit according to claim 11, wherein said lock of the drawer movement is integral to said dispensing member. 13. The infusion unit according to claim 1, further comprising a locking device of said oscillating arms for locking said oscillating arms. 14. The infusion unit according to claim 13, wherein said locking device of said oscillating arms is controlled by said lever, and wherein said locking device comprises a projection provided on each oscillating arm and is configured to abut against a plate of the support in the infusion position. 15. The infusion unit according to claim 14, wherein said locking device of said oscillating arms is integral to said dispensing member. 16. The infusion unit according to claim 1, wherein said lever comprises a first feeler cooperating with a first cam profile integral with said support, said first cam profile comprising: a first arched portion extending between a first end of the first cam profile corresponding to the charging position of the drawer, and an intermediate point of said cam profile, whereat the drawer is in the infusion position and the dispensing member is not in fluid connection with the single-serving sachet; anda second arched portion extending between said intermediate point and a second end of the first cam profile, said second end corresponding to a position wherein said dispensing member is in fluid connection with the single-serving sachet. 17. The infusion unit according to claim 16, wherein said first feeler comprises a first pin, and wherein said first cam profile further comprises two mirror channels made into two corresponding sides of said support. 18. The infusion unit according to claim 16, wherein said lever comprises a second feeler cooperating with a second cam profile integral with said support, said second cam profile having a substantially rectilinear shape, substantially orthogonal to the movement of said drawer and substantially parallel to a movement of the dispensing member. 19. The infusion unit according to claim 18, wherein said second feeler comprises a second pin, and wherein said second cam profile comprises two substantially mirror channels made into two corresponding sides of the support. 20. The infusion unit according to claim 19, wherein said second pin is constrained to a slide, and wherein said dispensing member is mounted on the slide. 21. The infusion unit according to claim 20, wherein said slide is guided by sliding pins into slots made in said support. 22. The infusion unit according to claim 1, wherein said lever comprises a shaped slot wherein a pin engages, for the mechanical connection between said lever and said drawer. 23. The infusion unit according to claim 1, wherein said dispensing member comprises a piercing member for piercing said single-serving sachets, the movement of approach of the dispensing member causing the piercing of the single-serving sachet by said piercing member. 24. The infusion unit according to claim 1, further comprising members suitable for interacting with said removable seat for the single-serving sachet and with machine management members for modifying operation of a machine including the infusion unit according to a configuration of said removable seat. 25. The infusion unit according to claim 1, wherein said dispensing member comprises a chamber in connection with a conduit for feeding hot water under pressure, wherein said chamber is partly delimited by a movable element moveable between a retracted position and an extended position, and wherein in the retracted position the movable element is retracted inside the chamber leaving a space between the movable element and the single-serving sachet and in the extended position the movable element is pressed against the single-serving sachet by feeding of the water under pressure in said chamber, said movable element having sealing members pressed against the front surface of said single-serving sachet to form a seal. 26. The infusion unit according to claim 25, wherein said movable element carries a valve that is opened by the pressure of the hot water feeding into said chamber when said pressure has exceeded a value sufficient for obtaining the seal between the front surface of said single-serving sachet and said sealing members. 27. The infusion unit according to claim 1, wherein the movement of said drawer relative to said support is guided by two pairs of pins which engage and slide in a slot in each side of said support during a movement of said lever. 28. An infusion unit for making a beverage with single-serving sachets, comprising: a support;a drawer including a removable seat for a single-serving sachet, the removable seat being removable form the drawer and the drawer being slideable relative to said support and movable between a charging position of the single-serving sachet and an infusion position;a dispensing member for dispensing water under pressure to said single-serving sachet;a lever for controlling the movement of said drawer and a mechanical connection between said lever and said drawer and between said lever and said dispensing member, actuation of the lever causing movement of the drawer from the charging position to the infusion position and approach of the dispensing member to the single-serving sachet;a stopping element for locking the single-serving sachet into the infusion position, preventing movement of the single-serving sachet towards the charging position when said drawer is moved from the infusion position to the charging position; andinteraction members configured to interact with a type of the removable seat and distinguish between a first type and a second type of the removable seat,wherein said removable seat is partly delimited by a pair of arms oscillating relative to said drawer for allowing removal of empty single-serving sachets from removable said seat during the drawer movement from the infusion position to the charging position, andwherein said dispensing member is associated to a sealing member movable towards the single-serving sachet, when it is in the infusion position, for pressing against a top external edge of the single-serving sachet. 29. The infusion unit according to claim 28, wherein the interaction members are operatively coupled with mechanical members, electrical management parts and hydraulic management parts of the infusion unit for setting an operation of the infusion unit and infusion parameters according to the type of the removable seat interacting with the interaction members. 30. A coffee machine for making a beverage with single-serving sachets comprising an infusion unit, wherein the infusion unit comprises: a support;a drawer including a removable seat for a single-serving sachet, the removable seat being removable form the drawer and the drawer being slideable relative to said support and movable between a charging position of the single-serving sachet and an infusion position;a dispensing member for dispensing water under pressure to said single-serving sachet;a lever for controlling movement of said drawer and a mechanical connection between said lever and said drawer and between said lever and said dispensing member, actuation of the lever causing the movement of the drawer from the charging position to the infusion position and approach of the dispensing member to the single-serving sachet; anda stopping element for locking the single-serving sachet into the infusion position, preventing movement of the single-serving sachet towards the charging position when said drawer is moved from the infusion position to the charging position;wherein said removable seat is partly delimited by a pair of arms oscillating relative to said drawer for allowing removal of empty single-serving sachets from said removable seat during the drawer movement from the infusion position to the charging position, andwherein said dispensing member comprises a sealing member movable towards the single-serving sachet, when said dispensing member is in the infusion position, under a thrust of water under pressure for adjusting to a front surface of the single-serving sachet and forming a seal on the front surface. 31. The coffee machine of claim 30, further comprising a interaction members configured to detect a type of the removable seat exhibited on said drawer, and wherein said interaction members are further configured to interact with machine management members to automatically select operating conditions of the coffee machine based on the type of the removable seat detected by said interaction members.