| 摘要 |
Automatic espresso coffee dispensing unit includes a hot water delivery device (2) and, for containing coffee powder or a capsule, a compartment (47, 152) to be moved into sealed relationship against the delivery device, such compartment being in the form of a cylindrical jacket (73, 41) rigid with a movable hollow body (7, 40) which is sealedly mounted on a fixed hollow body (5, 50) to create a variable volume chamber connected via a two- or three-way valve alternatively to a pressurized water source and to discharge.
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