| 摘要 |
A nozzle (1) adaptable to the steam outlet of a coffee machine is designed to froth a liquid such as e.g. milk. Said nozzle comprises in the direction of the steam flow path:
- a steam inlet opening (3),
- a restriction (4) with limited cross-section adapted to accelerate the velocity of the steam flow, and
- at least one cavity (5) having a cross-section larger than the restriction (4) and from which the frothed liquid can be drained. The nozzle further comprises an outer casing (30) comprising a smoothening reservoir (31) and a jet breaking surface (34) facing the opening (6) and at least one outlet opening (32) radially offset relatively to the opening (6) of the portion of the enlarged mixing cavity. The outer casing (30) is arranged at least partially around the tubular portion of mixing cavity (5).
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