Abstract: The invention relates to a boiler for heating water in a coffee or espresso machine, comprising a boiler housing (1), a cold water inlet (7), a hot water outlet (8) and an electric heating device (5). Said boiler housing (1) is cylindrical and comprises a boiler cover (2), a boiler top (4) and a boiler base (3) having a cylinder axis (A) that is horizontal when in operation. The cold water inlet (7) and the hot water outlet (8) and the electric heating device (5) are mounted on the boiler base (3) of the boiler housing (1), that extends vertically, and the heating device (5) is configured in such a manner that each point inside the container volume is at a normal distance from the heating device (5) that is less than 40% of the container diameter (D).

Abstract: A brewing piston for infusion preparation, including a head associated with a filtering element, and a lateral surface having a first gasket in proximity to the head and a second gasket at a distance from the first gasket. The brewing piston includes a first conduit connected to the head and arranged to inject a liquid for infusion preparation, and a second conduit connected to the lateral surface between the gaskets and arranged to inject the liquid between the first gasket and the second gasket during infusion preparation. The piston is arranged to limit or avoid leaks in a machine for infusion preparation. Also included is a machine using the piston and a method of limiting or avoiding leaks in a machine for infusion preparation.

Abstract: A brewing piston for infusion preparation, including a head associated with a filtering element, and a lateral surface having a first gasket in proximity to the head and a second gasket at a distance from the first gasket. The brewing piston includes a first conduit connected to the head and arranged to inject a liquid for infusion preparation, and a second conduit connected to the lateral surface between the gaskets and arranged to inject the liquid between the first gasket and the second gasket during infusion preparation. The piston is arranged to limit or avoid leaks in a machine for infusion preparation. Also disclosed is a machine using the piston and a method of limiting or avoiding leaks in a machine for infusion preparation.

Abstract: The invention relates to a novel device for producing and dispensing different beverages, which are mixed from milk and different flavoring agents. For this purpose, a mixing chamber (3) having a milk feed line (2) and a line (8) for discharging the milk-flavoring agent mixture is provided. The device further has at least one reservoir (5) for receiving the flavoring agent (S2, S2, S3, Sn), wherein each reservoir (5) is connected with a supply line (7) via a metering device or delivery pump (4) and a feed line (6) to the mixing chamber (3) of each flavoring agent (S1, S2, S3, Sn) such that the flavoring agent (S1 . . . Sn), which can be delivered into the mixing chamber (3) in a metered manner by means of the delivery pump (4), can be mixed therein with the milk, wherein the mixed beverage can be dispensed via the dispensing line (8).

Abstract: The invention relates to a brewing unit (1) for a coffee maker for brewing a ground coffee portion (10), comprising a brewing unit housing (2), an upper plunger (3) firmly connected to the brewing unit housing (2), a holder (4) for receiving the ground coffee portion (10), said holder being open at the top and closed at the bottom by a base (7), and a brewing plunger (6) for compressing the ground coffee portion (10) in a brewing chamber (5). The holder (4) and the brewing plunger (6) are disposed movably and pivotally in the brewing unit housing (2). Mechanical operating elements are provided in the brewing unit housing (2) for raising, lowering, and pivoting the holder (4) and the plunger (3). The brewing plunger (6) is hydraulically guided displaceably in the holder (4) relative to the holder (4). Between the brewing plunger bottom side (14) and the base (7) of the holder (4) a lower chamber space (13) is provided, into which the hot water supply (8) opens.

Abstract: The coffee machine (1) according to the invention comprises at least two brewing groups (4, 5) and a hot water device (2, 2?) which supplies the brewing groups (4, 5) with hot water. The brewing groups (4, 5) have a coffee dispenser (11) almost at the same location. Each brewing group (4, 5) is individually actuatable.

Abstract: The coffee machine according to the invention for the automatic preparation of coffee or espresso comprises a housing (1) with the components arranged therein for the preparation and dispensing of coffee as well as the components (10, 11, 12) for the supply of hot water and the supply of steam. The housing (1) is subdivided by means of a partition (6) into two compartments (8, 9), namely a front compartment (8), which is intended to accommodate the components for the preparation and dispensing of coffee, and a rear compartment (9) which is intended to contain the carrier element (7). The components (10, 11, 12) for the supply of hot water and the supply of steam are arranged in the carrier element (7). By virtue of the partition (6) there is a thermal separation and shielding between the two compartments (8, 9) on the one hand and, on the other hand, to a great extent, also a dry-moist separation. This modular structure substantially eases and simplifies the assembly and service tasks on the coffee machine.