In an automatic beverage preparation machine operable to dispense a beverage in a container, a fluid for preparing the beverage is heated by an electromagnetic-induction, continuous-flow heater having a tubular body delimiting a flow path form the fluid to be heated. The tubular body has an end outlet segment leading into a chamber closed by a plug-shaped body that is removable to allow access to the flow path. The plug-shaped body is arranged outside a casing or is uncouplable and extractable from the casing through an opening formed in the casing to allow direct access from the outside to the flow path.

In an automatic beverage preparation machine operable to dispense a beverage in a container, a fluid for preparing the beverage is heated by an electromagnetic-induction, continuous-flow heater having a tubular body delimiting a flow path form the fluid to be heated. The tubular body has an end outlet segment leading into a chamber closed by a plug-shaped body that is removable to allow access to the flow path. The plug-shaped body is arranged outside a casing or is uncouplable and extractable from the casing through an opening formed in the casing to allow direct access from the outside to the flow path.

A machine for dispensing coffee comprising: includes at least one pump, at least one heating device, and at least one delivery group. The pump sends pressurized water to the delivery group, and the heating device heats the water sent to the delivery group.

The machine further includes at least one container of ground coffee; and a dispensing opening adapted to deliver, into a cup, coffee obtained by percolating the pressurized heated water through a dose of coffee powder in the container, wherein the coffee includes liquid coffee and coffee cream;

The machine includes, in proximity of the dispensing opening, a coffee quality optical sensor adapted to intercept the coffee flow exiting the dispensing opening which detection is processed by a processing and control unit to generate a signal indicative of the properties of the coffee cream and/or a signal proportional to the extraction of coffee in the liquid coffee.

A machine for dispensing coffee comprising: includes at least one pump, at least one heating device, and at least one delivery group. The pump sends pressurized water to the delivery group, and the heating device heats the water sent to the delivery group.

The machine further includes at least one container of ground coffee; and a dispensing opening adapted to deliver, into a cup, coffee obtained by percolating the pressurized heated water through a dose of coffee powder in the container, wherein the coffee includes liquid coffee and coffee cream;

The machine includes, in proximity of the dispensing opening, a coffee quality optical sensor adapted to intercept the coffee flow exiting the dispensing opening which detection is processed by a processing and control unit to generate a signal indicative of the properties of the coffee cream and/or a signal proportional to the extraction of coffee in the liquid coffee.

A method and device for detecting the amount of limescale that accumulates in liquid heating devices, in particular for heating water. The method is capable of establishing, through simple temperature measurements, if the amount of limescale deposited on the heater element of a device for heating liquids is such as to jeopardize the correct operation thereof and provides the user with information on the need to clean the aforesaid heater.

A method and device for detecting the amount of limescale that accumulates in liquid heating devices, in particular for heating water. The method is capable of establishing, through simple temperature measurements, if the amount of limescale deposited on the heater element of a device for heating liquids is such as to jeopardize the correct operation thereof and provides the user with information on the need to clean the aforesaid heater.

Ingredient cartridges and associated fluid mixture dispensing devices are disclosed herein. An ingredient cartridge can include a recyclable fluid storage portion, a recyclable shell at least partially surrounding the recyclable fluid storage portion, and a sturdy portion attached to the recyclable shell and having a device mating interface for a cartridge mating interface on the fluid mixture dispensing device. The cartridge mating interface can be a sliding cartridge mating interface meant to interface with a cartridge that slides into the device. The sliding cartridge mating interface can include a first anchor for receiving a mating interface of a cartridge, a second anchor for receiving a mating interface of the cartridge, and a rail surface. The first anchor and the second anchor can extend from the rail surface. The first anchor and the second anchor can be the tallest protrusions on the rail surface.

Ingredient cartridges and associated fluid mixture dispensing devices are disclosed herein. An ingredient cartridge can include a recyclable fluid storage portion, a recyclable shell at least partially surrounding the recyclable fluid storage portion, and a sturdy portion attached to the recyclable shell and having a device mating interface for a cartridge mating interface on the fluid mixture dispensing device. The cartridge mating interface can be a sliding cartridge mating interface meant to interface with a cartridge that slides into the device. The sliding cartridge mating interface can include a first anchor for receiving a mating interface of a cartridge, a second anchor for receiving a mating interface of the cartridge, and a rail surface. The first anchor and the second anchor can extend from the rail surface. The first anchor and the second anchor can be the tallest protrusions on the rail surface.

An indicator generating method for generating an indicator which is suitable for maintenance prediction of a water heating system is proposed. A power state indication device generates a high power consumption signal if a heating device of the water heating system is activated. The time duration of the activation is such an indicator, if no water flow is present. Furthermore, the time interval between subsequent activations is such an indicator. A predictive maintenance method processes these condition-based indicators and determines a remaining useful lifetime according to a predictive maintenance model. The predictive maintenance device outputs a maintenance signal indicating required maintenance, if the remaining useful lifetime drops below a predetermined threshold. The methods may be performed by water heating systems or beverage makers.

A device for foaming liquid includes a line system and a pump, via which at least one first line of the line system is connectible to at least one storage container in which the liquid to be foamed is stored, and via a second line of the line system is connectible to at least one outlet nozzle, an air-enrichment element by means of which air can pass through the liquid, and a heating element designed as a continuous flow heater. Furthermore, the heating element is arranged in the second line of the line system of the device and is designed as a thick-film heater in which an electric heating resistor is attached to a carrier using thick-film technology, on which carrier a flow path is provided for the liquid.