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.

An automatic machine for preparing beverages, in particular American coffee, including a unit to feed the coffee powder, a mobile infusion unit having an infusion cylinder which delimits an infusion chamber, and a hydraulic circuit configured to heat the water for the infusion and feed it to the infusion chamber, where the infusion unit has an expulsion piston slidable inside the infusion cylinder and delimiting at the lower part the infusion chamber, and a valve device provided with a valve body and a closing piston which can engage with the infusion cylinder in order to close the infusion chamber.

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.

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.

Described herein are examples of a system which include a boiling system and a dispensing system. The boiling system includes a primary boiler to heat hot water, a holding boiler to maintain the hot water, a brew group to receive the hot water from the holding boiler, and a heated transfer hose to receive a beverage component from the brew group and apply heat to the beverage component. The brew group includes a motor, a tamp to form a puck, a heated brew chamber to extract a beverage component, a load cell to measure a weight of the brew group, a heating element to heat the brew chamber, a spray to press the puck out, and an ejector to sweep the puck away. The dispensing system is coupled to the heated transfer hose to dispense the beverage component at a set point temperature.

A brewer for a coffee machine. The brewer includes a brewing chamber and an inlet opening for receiving ground coffee in the brewing chamber, an outlet opening for disposal of a substance from the brewing chamber. The brewer also includes a piston for tamping the ground coffee that, when looking from top to bottom in the brewing chamber, includes a closed frontal pressing surface that is straight at least in its upper quarter and gradually inclines forward upon approaching the bottom of the brewing chamber, allowing the pressing action of the piston on the ground coffee to be initiated sooner and more severe near to the bottom than near to the top of the brewing chamber.

The invention concerns a full automatic coffee machine (100) comprising: a brewing chamber (1), an upper piston (2), a lower piston (3) movable inside said brewing chamber (1), wherein the brewing chamber and/or the upper piston are relatively movable between a first closed position configured for compacting coffee during brewing and the second closed position is configured for not compacting coffee during brewing, a pressurized hot water fluid system comprising at least a water supply (101), a water heating device (104) and a water pump (102) wherein said system is connected to the water inlet (13) of the coffee extraction unit, wherein the fluid supply system comprises a pressure bypass valve (107) downstream the water pump and wherein the predetermined threshold pressure of the fluid dispensed by said pressure bypass valve is adjustable, and wherein the full automatic coffee machine comprises a control system configured: to move the brewing chamber and/or the upper piston to the first closed position or to the second position for brewing coffee powder, and to adjust the predetermined threshold pressure of the fluid dispensed by the pressure bypass valve to a first predetermined threshold pressure, respectively to a second predetermined threshold pressure, when the brewing chamber and/or the upper piston is moved to the first closed position, respectively to the second position.

A system, method, and apparatus for producing a brewed beverage using a brewing apparatus of a brewing machine to reduce the time to produce a brewed beverage through a sequence of steps. The apparatus includes structures and functions that help to maintain the reliability and cleanliness of the apparatus. The structure of the apparatus helps reduce the size and dimension of the apparatus while producing a desired brewed beverage result. The steps of the method configured using the apparatus to sequence and/or simultaneously operate various steps of the apparatus to reduce the time to produce a brewed beverage.

A coffee machine includes a coffee grinder for coffee, a brewing cylinder movable along a direction of translation, and a brewing chamber. The coffee machine also includes an ejection piston is housed in said brewing cylinder in a sliding manner along the direction of translation, a closing piston of the brewing chamber, and a controller having in its memory an algorithm for calculating the grinding time of the grinder. The controller is programmed to calculate the weight of a dried spent coffee ground charge from the measured value of its height, feed the calculation algorithm with the calculated value of the weight, and update the grinding time of the grinder for a subsequent dispensing cycle.