Brewing unit for an espresso-type coffee vending machine

摘要

Brewing unit for an espresso-type coffee vending machine in which a plunger (75), onto which there is secured a filter (32) adapted to receive the dose (50) of raw material, is pushed by the hot water under pressure against the reaction of a counter spring (30). The channels (77) provided in the plunger (75) are in this way plugged by the same bottom wall (22) of the chamber (20) during brewing. At the end of said brewing phase, said plunger (75) is lifted, thereby enabling the outflow of the brew. <IMAGE>