| 摘要 |
<p>PCT No. PCT/NL95/00368 Sec. 371 Date Apr. 11, 1997 Sec. 102(e) Date Apr. 11, 1997 PCT Filed Oct. 20, 1995 PCT Pub. No. WO96/12432 PCT Pub. Date May 2, 1996An apparatus for brewing and pouring coffee or tea in unit doses has an upwardly and downwardly moveable extraction chamber, a filter unit with an exchangeable filter, and a collection chamber. The collection chamber is covered at the top by a grating, which abuts the filter paper, and is closed at the bottom by an impermeable membrane, which is coupled to a displacement mechanism that moves the membrane up and down. A pouring-out tube is connected to the underside, and it is closed by a valve. During a working cycle, in a first phase, hot water and coffee or tea are introduced in the extraction chamber; in a second phase, the membrane moves up, pressing air through the filter into the extraction chamber; in a third phase, the membrane moves downwardly, suctioning extract brewed in the extraction chamber through the filter into the collection chamber; and in a fourth phase, the valve is opened and the brewed coffee or tea is poured through the tube.</p> |
