The present disclosure includes an extraction assembly for use in an automatic espresso brewer. The extraction assembly includes components and methods for controllably extracting espresso beverage from a quantity of brewing substance. The components, assemblies, and methods facilitate improved control and operation of the extraction assembly and improve the reliability of the extraction assembly. The brewing substance is compacted between a pair of opposing pistons. Compacting force is monitored through at least one sensor carried on the extraction assembly to provide a signal to a controller. A predetermined compacting force may be programmed into the system for all brewing cycles or dependent upon the brewing substance used. The pair of pistons operates relative to a brew chamber for use in the espresso extraction process. The pistons provide compacting force and boundaries within the chamber and facilitate removal of a spent brewing substance puck at the end of the brewing cycle. Compacting force is monitored at the start of the brewing process and a predetermined force is required before the brewing process can be started. During the brewing process compacting force can be maintained and controllably adjusted. A variety of sensor methods and locations can be used to detect and monitoring compacting force.

A coffee machine with a brewer. The brewer includes a brewing chamber for receiving ground coffee and a piston movable in the brewing chamber for tamping the ground coffee. An input interface enables an operator to select a desired amount of ground coffee to be supplied to the brewing chamber and to select an amount of brewing water to be used during extraction of the coffee. The input interface receives a setpoint for a desired extraction time. The coffee machine also may include a flowmeter for measuring an actual flow of the brewing water during extraction, the flowmeter connected to a controller and the controller arranged to drive the piston to a position which causes the actual flow of the brewing water to be set at a value which corresponds to eventually using the full amount of brewing water in about or exactly the desired extraction time.

A machine (1) for preparing a beverage comprises: a first part (20) and a second part (30) movable relative to the first part; a motor (51,51) having a drive member (510, 511) such as a rotating drive axis; one or more mechanical transmission members (52; 521-523; 524-526) for transmitting a movement of the drive member to the movable part (30) for moving the movable part; and a transmission frame (200) for supporting the motor and the movable transmission member(s). The transmission frame is an integral component (200) on which the motor and the transmission members are directly mounted.

A low DC and/or AC voltage machine for preparing espresso coffee or other beverages, having a support structure provided with a heat exchanger, one or more heating elements with low energy consumption for heating water in a container, a water circulation pump, thermostats for adjusting the water temperature, a solenoid valve and a filtering and delivering unit, provided with a fixed portion communicating with the heat exchanger and a movable portion formed by a filter supporting body shaped for housing a cup, supporting the capsule containing the metered powder of the beverage, or a filter for receiving the loose powder, or a filter for receiving a paper waffle. The filter supporting body may be displaced from a lowered position for loading the element for preparing the beverage, to a raised position for the infusion of the beverage, and again in the lower position for discharging the exhausted element.

An automatic machine for preparing coffee, comprising an infusion assembly, a water tank, a heat exchanger with associated pump, and a grinder for grinding coffee beans, the grinder being arranged in line with the infusion assembly and horizontally with respect to a resting surface of the machine, a container adapted to contain coffee beans being connected, in an upper region, to the grinder, the grinder being connected to a chamber adapted to contain a scraper, the ground coffee being adapted to pass horizontally from the grinder to the scraper, in order to accommodate within the scraper a preset dose of ground coffee.

The invention relates to a beverage preparation device comprising a cylindrical chamber with a jacket provided with a filling opening for receiving a powder-like or granular substance and an ejection opening for ejecting the substance, a first and a second compression element, positioned perpendicularly with respect to a longitudinal axis of the chamber, a displacement member for relative displacement of the first compression element with respect to the jacket between a filling position, a compression position and an ejection position, wherein the compression elements in the filling position delimit a filling volume and the compression elements in the compression position delimit a preparation volume positioned along a longitudinal axis and at a distance from the filling volume, wherein the first compression element engages the inner wall of the jacket in a fluid-tight manner and a fluid supply channel and a fluid discharge channel that in the compression position is in fluid-communication with the preparation volume.

Provided is a brewing device for an espresso maker having a brewing chamber for receiving grounds, a pressing ram mounted movably on a path of travel extending between a top position and a bottom compaction position in which it penetrates into said brewing chamber to form a cake of compacted grounds, a hydraulic drive mechanism for the pressing ram having a hydraulic pump and means for measuring the volume of hydraulic fluid injected into the drive mechanism. The brewing device has a control circuit that determines the height of the cake of compacted grounds from signals delivered by the volume measurement means during the travel of the pressing ram.

Within a brewing unit for a coffee machine, a brewing chamber, which is arranged in a pivotable brewing cylinder, can be filled with ground coffee powder by using a filling device. For the purpose of introducing the coffee powder, the brewing chamber has a filling opening. With the aim of avoiding undesired deposits of grounds in the region of the upper side of the brewing unit, and also of improving levels of hygiene, a projection extends in the filling direction outside the brewing chamber, wherein the projection is such that the exit region of the filling device is introduced with the formation of an interspace between the projection and a side wall of the exit region such that the projection substantially fully surrounds the exit opening of the exit region. Coffee powder supplied in the filling device drops from the exit opening of the exit region, directly through a through-opening of the projection and the filling opening, into the brewing chamber without striking against the projection.

A hot beverage preparing device for preparing hot beverages without a need for a user intervention, wherein materials to be used are prevented from being affected by a water vapor formed during a brewing process, or by a residual water inside a brewing chamber. The hot beverage preparing device comprising at least one inlet opening for taking at least one material required for preparing a hot beverage inside of the brewing chamber.

A brewing device is used for preparing beverages like coffee or tea. The brewing device includes a brewing chamber with an opening for loading/unloading a brewing material, a piston slidably mounted in the brewing chamber and an electronic control unit. The electronic control unit is programmed to cause the piston to move among a loading configuration, in which the brewing material is loadable in the brewing chamber, a compression configuration, in which the piston compacts the brewing material in the brewing chamber, and an expulsion configuration, in which the piston extracts the exhausted material from the brewing chamber. The electronic control unit is programmed to cause, in the loading configuration, the piston to lower from a higher position, corresponding to an initial loading configuration, to a lower position, corresponding to a final loading configuration.