Abstract: A machine for preparing coffee beverages comprises an infusion unit comprising an infusion chamber suitable to contain a quantity of coffee powder to be subjected to infusion, a grinding unit to grind coffee beans and obtain coffee powder, a water tank connected to the grinding unit, means for feeding and heating the water, and a dispensing unit fluidically connected to the infusion unit and configured to dispense the beverage prepared into a receptacle. The invention also concerns a method to regulate a machine for preparing coffee beverages.

Abstract: A milk frother comprising a steam fitting with a steam flow dispenser, a homogenization element, a hollow longitudinal body having a seat engaging the steam fitting, a steam, air and milk mixing chamber, an air access channel, and a milk access channel both to the mixing chamber. The steam fitting has steam access to the mixing chamber, the hollow longitudinal body has an outlet for frothed milk from the mixing chamber, and the outlet has a dispensing end engaging with the homogenization element. A permanent connection provided between the hollow longitudinal body and the steam fitting, having a variable configuration between a first engagement and a disengagement configuration between the steam fitting and the engagement seat. A second permanent connection provided between the hollow longitudinal body and the homogenization element, having a configuration that is variable between a second engagement and a disengagement configuration between the homogenization element and the dispensing end.

Abstract: A coffee machine comprises a water tank, steam boiler, a water pump, an external coffee dispenser, an external steam dispenser with a steam flow opening, a milk container having an emulsifying device having a mixing chamber to mix milk/steam/air, a milk aspirating channel with an inlet into the mixing chamber, an air aspirating channel having a valve and an inlet into the mixing chamber, the mixing chamber having a connection with the external steam dispenser and an outlet of the milk emulsion aligned to the steam dispensing opening and connected to an external dispenser of the milk emulsion. The outlet opening is larger than the steam dispensing opening. The milk aspirating channel has a passage area sufficiently large to provide milk aspiration by Venturi effect to the dispensing of a milk emulsion, at a temperature no more than 25° C. higher than the temperature of the milk in the milk container.

Abstract: A milk frother (1) including a container having a chamber (2) for containing milk, a mixing chamber (3) equipped with an external dispenser (4) for dispensing the milk, a connecting channel (5) for connection between the containment chamber (2) and the mixing chamber (3), a transfer impeller (6) for transferring the milk from the containment chamber (2) to the mixing chamber, a mixing impeller (8) provided in the mixing chamber (3), and disconnectable connector (9) for connecting the transfer impeller (6) and the mixing impeller (8).

Abstract: A machine for preparing coffee beverages comprises an infusion unit comprising an infusion chamber suitable to contain a quantity of coffee powder to be subjected to infusion, a grinding unit to grind coffee beans and obtain coffee powder, a water tank connected to the grinding unit, means for feeding and heating the water, and a dispensing unit fluidically connected to the infusion unit and configured to dispense the beverage prepared into a receptacle. The invention also concerns a method to regulate a machine for preparing coffee beverages.

Abstract: Associable with a dispenser of a flow of steam of a coffee machine for the production of a milk-based comestible liquid comprises a mixing chamber, an outlet chamber for the liquid from the mixing chamber, a steam inlet channel in said mixing chamber, a channel for the intake of air into said mixing chamber, a Venturi-effect milk suction channel in said chamber, and at least one releasable part including at least one part of the milk suction channel, the releasable part being further provided with mechanical stirring means.

Abstract: The production method of hot milk with or without froth, with a Venturi effect emulsifying device suitable for sending, into a mixing chamber, a flow of steam so as to aspirate, by Venturi effect, milk and air or only milk, comprises a production cycle of hot milk with froth and a production cycle of hot milk without froth being carried out by supplying an equal flow of steam of equal duration into a mixing chamber having equal volume, equal conformation and equal inlet section of the milk but a different outflow section of the milk.

Abstract: The coffee machine (1) with a system for emulsifying and heating milk comprises a body (2) having a coffee dispenser (3) and a device (4) for emulsifying and/or heating milk having a carafe (6) for containing the milk and a lid (7) for closing the carafe (6), means (8) for conveying the steam generated inside the coffee machine, to a Venturi tube (9) present in the lid (7) so as to emulsify and/or heat the milk inside said lid, the device (4) being provided with detection means (12) for detecting the presence of milk in the carafe (6) so as to interrupt the dispensing of milk when said carafe (6) is completely empty.

Abstract: The milk frother (1) comprises a container that has a chamber (2) for containing the milk, a mixing chamber (3) equipped with an external dispenser (4) for dispensing the milk, a connecting channel (5) for connection between the containment chamber (2) and the mixing chamber (3), a transfer impeller (6) for transferring the milk from the containment chamber (2) to the mixing chamber, a mixing impeller (8) provided in the mixing chamber (3), and disconnectable connection means (9) for connection between the transfer impeller (6) and the mixing impeller (8).

Abstract: The production method of hot milk with or without froth, with a Venturi effect emulsifying device suitable for sending, into a mixing chamber, a flow of steam so as to aspirate, by Venturi effect, milk and air or only milk, comprises a production cycle of hot milk with froth and a production cycle of hot milk without froth being carried out by supplying an equal flow of steam of equal duration into a mixing chamber having equal volume, equal conformation and equal inlet section of the milk but a different outflow section of the milk.

Abstract: The coffee machine (1) with a system for emulsifying and heating milk comprises a body (2) having a coffee dispenser (3) and a device (4) for emulsifying and/or heating milk having a carafe (6) for containing the milk and a lid (7) for closing the carafe (6), means (8) for conveying the steam generated inside the coffee machine, to a Venturi tube (9) present in the lid (7) so as to emulsify and/or heat the milk inside said lid, the device (4) being provided with detection means (12) for detecting the presence of milk in the carafe (6) so as to interrupt the dispensing of milk when said carafe (6) is completely empty.

Abstract: The emulsifying device (1) for emulsifying milk comprises a Venturi mixing chamber (2), a circuit (3) for supplying air and having an air outlet (22) connected to the mixing chamber (2), and a circuit (4) for supplying steam and having a steam outlet (23) connected to the mixing chamber, the circuit for supplying air (3) comprising a first air inlet line (5) equipped with a first shut-off solenoid valve (8), and at least a second air inlet line (6) equipped with a second shut-off solenoid valve (9), the first and second air inlet lines (5, 6) having a different minimum cross-sectional area (11, 12).