Abstract: For a milk delivery device (1) which delivers milk (7) on the basis of the Venturi effect with the aid of a steam flow (9) output from a steam nozzle (2), it is provided, by corresponding orientation of an admixing opening (4) and optionally with the aid of deflecting surfaces (46), to allow a milk flow (8) sucked up by the steam flow (9) to flow tangentially onto the steam flow (9) in order thereby to be able to still ensure that the milk flow (8) is delivered in a manner as free as possible from disturbances, even in the event of very low flow rates of the milk flow (8). For this purpose, even before the milk flow (8) enters into contact with the steam flow (9), the milk flow (8) is oriented in the direction (51) of the steam flow (9).

Abstract: The invention relates to a method and a cleaning device for cleaning, disinfecting and rinsing a milk-conducting system of a coffee machine for producing mixed coffee beverages, in which a fluid back flow is generated at the milk outlet such that the fluid at least partly flows through the milk inlet in order to rinse the milk-conducting system.

Abstract: A milk foaming device for improving the quality of a milk foam (13) which is produced. The milk foaming device (1) has a mixing chamber (3) in which air (6) and milk (7) can be foamed by a steam flow (9) to provide the milk foam (13). For this purpose the respective flow rates of an air stream (15) and of a milk stream (8), each of which flows into the mixing chamber (3), are set by the air (6) and the milk (7) always flowing together into the mixing chamber (3) through an adjustable, variable opening cross-section (10) which acts as a flow rate reducer for the air stream (15) and the milk stream (8).

Abstract: For a milk delivery device (1) which delivers milk (7) on the basis of the Venturi effect with the aid of a steam flow (9) output from a steam nozzle (2), it is provided, by corresponding orientation of an admixing opening (4) and optionally with the aid of deflecting surfaces (46), to allow a milk flow (8) sucked up by the steam flow (9) to flow tangentially onto the steam flow (9) in order thereby to be able to still ensure that the milk flow (8) is delivered in a manner as free as possible from disturbances, even in the event of very low flow rates of the milk flow (8). For this purpose, even before the milk flow (8) enters into contact with the steam flow (9), the milk flow (8) is oriented in the direction (51) of the steam flow (9).

Abstract: The milk foaming apparatus output device includes an emulsifying chamber having a fluid inlet for a fluid containing milk, air and/or steam, which emulsifies into an emulsified milk foam liquid, and an output portion having an output opening and at least one output channel fluidly connected to the emulsifying chamber and the output opening so that the emulsified fluid flows through the output channel to the output opening. The output area also has a deflecting surface and/or at least one deflecting member for decelerating and swirling fluid in the emulsifying chamber. Also, a sieve element arrangement has at least one sieve element including passages arranged upstream of the output opening so that emulsified fluid from the emulsifying chamber to the output opening passes through the sieve element via at least one passage. The passages are arranged in a space extending annularly around the deflecting surface and/or the deflecting member.