| 摘要 |
The invention relates to a device for the preparation of a coffee-based drink by extracting a dose of ground coffee contained in a capsule ( 8 ). Said device comprises a water reservoir ( 1 ), a pump ( 2 ), a heating body ( 15 ) and a water injection element ( 9 ) which are successively linked by means of a water supply line( 3 ). The device also comprises the following items disposed in the extension of the water injection element ( 9 ): a capsule holder ( 7 ) and an outlet ( 10 ) for the water-coffee mixture. The capsule holder ( 7 ) is adapted in such a way that it can be fixed and manually removed from the device and comprises means for containing a coffee capsule ( 8 ) so that pressurized water from the water injection element ( 9 ) can flow through the capsule ( 8 ) and flow through the outlet ( 10 ). The inventive device is characterized in that it also comprises a derivation line ( 5 ) whereby one end thereof is connected to the water supply line ( 3 ) and comprises hydraulic means on the other end thereof, which are adapted in such a way that they can control the a coffee-water mixture discharged through the outlet ( 10 ). The inventive device also comprises a valve ( 4 ) which is disposed in such a way as to enable the discharge of water in the derivation line ( 5 ) when a predetermined pressure is obtained. The inventive device makes it possible for the user to define the pressure of the coffee-water mixture
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