Abstract: Using a steam lance (16), the water vapor and compressed air are supplied to the milk via two pipelines (21, 22) which are separated from one another up to the outlet from the steam lance, wherein only steam is supplied through the outer pipeline (21) at a vapor velocity necessary for breaking up the protein molecules of the milk, whereas a steam-air mixture is supplied through the inner pipeline (22) to enrich the milk with the necessary air proportion, and is only mixed with the steam from the outer pipeline (22) in the milk to be frothed. The steam lance (16) is composed of the two pipelines (21, 22) arranged coaxially to one another, and an end piece (23) which separates them from one another in the outlet area and has outlet openings (24, 25) for the two media, the steam and the steam-air mixture, designed as radial nozzles which are inclined horizontally and also relative to one another.

Abstract: In a method for producing milk foam, in particular for the preparation of drinks that contain milk foam in a coffee machine, a gaseous medium, in particular air, is delivered to milk conveyed, and the milk/air mixture that is formed is conveyed to an outlet for milk foam or drinks containing milk foam. The consistency of the milk foam that is produced is determined here and is monitored by a regulating process and/or is changed by a setting. Even with variable conditions of use and operation, perfect quality of the milk foam that is produced is guaranteed, in which, moreover, its consistency can be changed.

Abstract: Coffee grinder includes two grinding discs that can be rotated in opposite directions, the axial distance between which defines the degree of grinding of the coffee powder produced. The grinding discs are mounted one over the other within a grinder body, the lower grinding disc being rotatable about a vertical axis of rotation while the upper grinding disc can be adjusted non-rotatably and by an eccentric shaft relative to the lower grinding disc in the direction of the vertical axis of rotation. By rotating the eccentric shaft with a motorized drive, the space between the grinding discs can be changed. This enables almost infinite regulation of the degree of grinding when preparing the coffee.

Abstract: A coffee machine including a boiler for producing hot water and steam for the preparation of coffee or coffee-containing beverages. A coiled tubing is located in the boiler for producing hot milk or milk froth. Thus, no separate heating element is required for producing the hot milk or milk froth, as the milk or milk froth is heated by the water heated in the boiler for preparing the coffee. The coiled tubing is connected alternately to a milk container and a rinsing water source, so that potential milk residue is flushed out after each milk heating process. A predetermined amount of milk or rinsing water is fed to the coiled tubing by a pump. Thus the milk and rinsing water usage is optimized and the energy consumption is reduced.

Abstract: A method and a device for producing milk foam or warm milk drinks, whereby milk is suctioned from a container (1) by means of a pump (2) and conveyed to an outlet (8). The milk is routed through a continuous-flow heater (4) during suctioning and heated, whereafter the same is conveyed to an outlet (8) via a throttle point (9). In this way extremely digestible milk foam can be produced in a simple way when air or a gas is added to the milk.

Abstract: An apparatus for producing milk drinks or foamed milk drinks, especially for a coffee machine, is envisaged with a capsule (1, 1?, 1?) containing a pre-determined quantity of milk for a single use. The capsule (1, 1?, 1?) can be positioned above an outlet (2) and heated. In addition, a device for opening the floor (9, 9a) to extract the milk from the capsule (1, 1?, 1?) should be provided so that air can be added to the milk exiting from the capsule (1, 1?, 1?) for a possible foaming of the milk. The apparatus is simple and cost-effective and simple to maintain.

Abstract: An extraction device for producing coffee for a coffee machine is equipped with a brewing cylinder (2) for receiving coffee powder. The brewing cylinder is reciprocably adjustable between pre-determined positions along its axial direction in co-operation with a drive mechanism (4). Two pistons (31, 32) that are coaxially adjustable relative to one another, are located in the brewing cylinder (2). The brewing cylinder (2) incorporates a cylinder section (20), and an additional part (22) is also envisaged. The additional part (22) is moveably located at an end of the brewing cylinder (2) that can be closed by the first piston (31) and equipped with a filler opening (24) for the insertion of the coffee powder. In this way the length of the extraction device can be shortened.