A Machine for preparing coffee comprising a infusion chamber to house at least a coffee dose, and means for feeding pressurized water to said infusion chamber, said means comprising a cylinder and plunger assembly, said plunger defining inside the cylinder a chamber to house a preset quantity of wat
A Machine for preparing coffee comprising a infusion chamber to house at least a coffee dose, and means for feeding pressurized water to said infusion chamber, said means comprising a cylinder and plunger assembly, said plunger defining inside the cylinder a chamber to house a preset quantity of water, and said plunger being able to accumulate, in an active position, potential energy capable of being transmitted as a pressure to the water of said chamber, when said plunger contacts, in said active position, with the water of said chamber. It is characterized in that said infusion chamber is placed adjacent below the water chamber of said cylinder, both chambers including at least one hole through which, once opened, passes the pressurized water to said infusion chamber, said plunger moving back to the rest position inside said chamber as pressurized water is fed through said hole.
대표청구항▼
1. Machine for preparing coffee comprising an infusion chamber to house at least a coffee dose, and means for feeding pressurized water to said infusion chamber (8), said means comprising a cylinder (2) and plunger (3) assembly, said plunger (3) defining inside the cylinder (2) a chamber (6) to hous
1. Machine for preparing coffee comprising an infusion chamber to house at least a coffee dose, and means for feeding pressurized water to said infusion chamber (8), said means comprising a cylinder (2) and plunger (3) assembly, said plunger (3) defining inside the cylinder (2) a chamber (6) to house a preset quantity of water, and said plunger (3) being able to accumulate, in an active position, potential energy capable of being transmitted as a pressure to the water of said chamber (6), when said plunger (3) contacts, in said active position, with the water of said chamber (6), wherein said plunger (3) accumulates its potential energy from the compression force applied to one of a fluid and a spring, said compression force being applied when said plunger (3) is retracted in the chamber (6) of the cylinder (2), and wherein said infusion chamber (8) is placed adjacent below the water chamber (6) of said cylinder (2), both chambers including at least one hole (10) with a passage valve through which, once opened, passes the pressurized water to said infusion chamber (8), said plunger (3) moving back to the rest position inside said chamber (6) as pressurized water is fed through said hole (10). 2. Machine according to claim 1, wherein both chambers define a wall (9) including at least one hole (10). 3. Machine according to claim 2, wherein said wall (9) is provided with a recess (9a) configured to receive a dose of powder coffee, a mono-dose bag of ground coffee, or a coffee capsule. 4. Machine according to claim 1, wherein said infusion chamber (8) comprises a detachable wall (11) placed in correspondence with the wall (9) that comprises said hole (10). 5. Machine according to claim 1, wherein said plunger (3) accumulates, in its active position, potential energy from the compression force applied to a fluid placed in the cylinder (2) chamber that houses the rod (5) of said plunger (3). 6. Machine according to claim 5, which comprises a tank (23) for said fluid, said tank (23) being communicated with the chamber of the cylinder (2) that houses the rod (5) of said plunger (3). 7. Machine according to claim 1, wherein said plunger (3) accumulates, in its active position, elastic potential energy from the compression force applied to a spring (4) placed in the chamber of the cylinder (2) that houses the rod (5) of said plunger (3). 8. Machine according to claim 7, wherein said compression force is applied when the plunger (3) is retracted in the chamber (6) of the cylinder (2) provided to house said water, until it reaches said active position. 9. Machine according to claim 8, which comprises a traction mechanism (14, 15, 16) that acts on the rod (5) of said plunger (3) to retract said plunger (3) until said active position. 10. Machine according to claim 9, wherein said traction mechanism comprises a lever (14) coupled to clamps (16) capable of being engaged and disengaged to the rod (5) of said plunger (3), said clamps (16) permitting, in their engaging position, said rod (5) to be retracted when said lever (14) is driven in a preset rotation direction. 11. Machine according to claim 9, wherein said traction mechanism includes a gearing-down system with an epicycloidal gear (25) engaged to the rod (5) of said plunger (3). 12. Machine to claim 1, which comprises a duct that communicates the water chamber (6) of the cylinder (2) with a tank (19) for storing water, said duct permitting the water from said tank (19) to be sucked when said plunger (3) is retracted inside said chamber (6). 13. Machine according to claim 7, wherein said compression force is applied when a compressor element (7) of said spring (4) or fluid is moved, while said plunger (3) keeps its position fixed. 14. Machine according to claim 13, wherein said compressor element (7) is placed engaged to the end of the rod (5) opposed to said plunger (3), so that said spring (4) is compressed when said element (7) is moved at the end of said rod (5). 15. Machine for preparing coffee comprising an infusion chamber to house at least a coffee dose, and means for feeding pressurized water to said infusion chamber (8), said means comprising a cylinder (2) and plunger (3) assembly, said plunger (3) defining inside the cylinder (2) a chamber (6) to house a preset quantity of water, and said plunger (3) being able to accumulate, in an active position, potential energy capable of being transmitted as a pressure to the water of said chamber (6), when said plunger (3) contacts, in said active position, with the water of said chamber (6), characterized in that said infusion chamber (8) is placed adjacent below the water chamber (6) of said cylinder (2), both chambers including at least one hole (10) through which, once opened, passes the pressurized water to said infusion chamber (8), said plunger (3) moving back to the rest position inside said chamber (6) as pressurized water is fed through said hole (10), wherein said plunger (3) accumulates, in its active position, elastic potential energy from the compression force applied to a spring (4) placed in the chamber of the cylinder (2) that houses the rod (5) of said plunger (3),wherein said compression force is applied when the plunger (3) is retracted in the chamber (6) of the cylinder (2) provided to house said water, until it reaches said active position,wherein the machine further comprises a traction mechanism (14, 15, 16) that acts on the rod (5) of said plunger (3) to retract said plunger (3) until said active position, andwherein said traction mechanism comprises a lever (14) coupled to clamps (16) capable of being engaged and disengaged to the rod (5) of said plunger (3), said clamps (16) permitting, in their engaging position, said rod (5) to be retracted when said lever (14) is driven in a preset rotation direction. 16. Machine for preparing coffee comprising an infusion chamber to house at least a coffee dose, and means for feeding pressurized water to said infusion chamber (8), said means comprising a cylinder (2) and plunger (3) assembly, said plunger (3) defining inside the cylinder (2) a chamber (6) to house a preset quantity of water, and said plunger (3) being able to accumulate, in an active position, potential energy capable of being transmitted as a pressure to the water of said chamber (6), when said plunger (3) contacts, in said active position, with the water of said chamber (6), characterized in that said infusion chamber (8) is placed adjacent below the water chamber (6) of said cylinder (2), both chambers including at least one hole (10) through which, once opened, passes the pressurized water to said infusion chamber (8), said plunger (3) moving back to the rest position inside said chamber (6) as pressurized water is fed through said hole (10), wherein said plunger (3) accumulates, in its active position, elastic potential energy from the compression force applied to a spring (4) placed in the chamber of the cylinder (2) that houses the rod (5) of said plunger (3),wherein said compression force is applied when the plunger (3) is retracted in the chamber (6) of the cylinder (2) provided to house said water, until it reaches said active position,wherein the machine further comprises a traction mechanism (14, 15, 16) that acts on the rod (5) of said plunger (3) to retract said plunger (3) until said active position, andwherein said traction mechanism includes a gearing-down system with an epicycloidal gear (25) engaged to the rod (5) of said plunger (3).
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이 특허에 인용된 특허 (3)
Katou Isao,JPX ; Okamura Karin,JPX ; Kobayashi Makoto,JPX ; Kawabata Akio,JPX, Coffee extracting apparatus and method in which coffee grounds are expelled from an extracting container by pressed air.
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