| 摘要 |
A device for producing a milk emulsion includes: a steam injection conduit ( 10 ), a milk conduit ( 15 ), an air conduit ( 16 ) which opens into a suction chamber ( 3 ), and an air control element ( 25 ) designed to adjust the air flow passing through the air conduit. The device also includes a tubular segment ( 14 ) having an outer surface ( 24 ) at which the air conduit ( 16 ) opens. The air control element ( 25 ) includes first and second sealing elements ( 29, 30 ) provided on the outer surface ( 24 ). In addition, the air control element ( 25 ) can move between (i) a cappuccino position in which the opening ( 22 ) of the air conduit ( 16 ) communicates with the atmosphere and (ii) a hot milk position in which the first and second sealing elements define a sealed space containing the air conduit opening. A coffee machine including one such device is also disclosed. |
