A beverage brewing apparatus, the brewing apparatus having an infusion chamber for housing material to be percolated and for receiving pressurized water; a beverage outflow conduit connecting the infusion chamber to the outside; and a valve located between an inlet portion and an outlet portion of t
A beverage brewing apparatus, the brewing apparatus having an infusion chamber for housing material to be percolated and for receiving pressurized water; a beverage outflow conduit connecting the infusion chamber to the outside; and a valve located between an inlet portion and an outlet portion of the outflow conduit; the valve being a three-way valve having an inlet communicating with the infusion chamber via the inlet portion of the outflow conduit; a first outlet communicating with the outlet portion of the outflow conduit; and a second outlet communicating with the outside.
대표청구항▼
1. A beverage brewing apparatus, comprising: a cup-shaped body, and a compression piston which engages the cup-shaped body in fluidtight manner and is movable along the cup-shaped body to define, inside the cup-shaped body, an infusion chamber for housing material to be percolated and for receiving
1. A beverage brewing apparatus, comprising: a cup-shaped body, and a compression piston which engages the cup-shaped body in fluidtight manner and is movable along the cup-shaped body to define, inside the cup-shaped body, an infusion chamber for housing material to be percolated and for receiving pressurized water;a beverage outflow conduit connecting the infusion chamber to the outside, the outflow conduit extending through the compression piston; anda valve located between an inlet portion and an outlet portion of the outflow conduit and formed inside the compression piston, the valve being a three-way valve having an inlet communicating with the infusion chamber via the inlet portion of the outflow conduit, a first outlet communicating with the outlet portion of the outflow conduit, and a second outlet communicating with the outside;wherein the compression piston is a telescopic piston comprising a main body, and a head which is coaxial with the main body along an axis, is connected telescopically to the main body, and is movable, with respect to the main body and along the axis, from a normal extracted position to a withdrawn position in opposition to elastic means; andwherein the three-way valve is a slide valve having a slide face formed on the main body, and a movable part carried by the head, wherein the slide face is defined by a hole formed, parallel to the axis, in the main body; and the movable part is defined by an appendix which is carried by the head, is parallel to the axis, and slides in fluidtight manner inside the hole. 2. A brewing apparatus as claimed in claim 1, wherein the hole communicates with the first and second outlet. 3. A brewing apparatus as claimed in claim 2, wherein the first and second outlet are respectively a radial outlet and an axial outlet with respect to the hole. 4. A brewing apparatus as claimed in claim 1, wherein the inlet portion of the outflow conduit is formed along the appendix; the inlet being defined by a diametrical hole formed in the appendix. 5. A brewing apparatus as claimed in claim 1, wherein the valve has a distribution chamber communicating at all times with the inlet and the first outlet, and only communicating with the second outlet when the valve is in the first position; the appendix comprising, at its free end, a tip which engages the second outlet in fluidtight manner when the valve is in the second position; and the appendix having, below the tip, a smaller-section end portion defining, with the inner surface of the slide face, said distribution chamber. 6. A brewing apparatus as claimed in claim 1, wherein the valve is designed to selectively assume an open first position connecting the inlet and the first and second outlet to one another; and a second position closing the second outlet and connecting the inlet and the first outlet to each other. 7. A brewing apparatus as claimed in claim 6, wherein the valve has a distribution chamber communicating at all times with the inlet and the first outlet, and only communicating with the second outlet when the valve is in the first position.
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이 특허에 인용된 특허 (7)
Frei Hans-Peter (Oetwil am See CHX), Brewing head of an espresso maker.
Tonelli, Stefano; Lelli, Massimo, Hydraulic circuit for instant beverage machines, relief and safety valve for said circuit and method for the preparation of instant beverages.
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