A brewing unit includes two brewing chamber portions movable with respect to each other, and a guide for guiding a capsule from an insertion aperture to a brewing position. The guide includes guiding channels configured to engage a flange of the capsule and a respective retention member arranged on each guiding channel for retaining the capsule in the brewing position before and during closing the brewing chamber portions, and to disengage the capsule when the brewing chamber portions are moved apart after completion of a brewing cycle. A control member is configured to space apart the retention members upon completion of the brewing cycle, so that a spent capsule is released from the guiding channels when the brewing chamber portions are moved towards an open position. The control member is configured to prevent spacing apart of the retention members when the brewing chamber portions are moved towards a closed position.

Coffee machine (1) for preparation of a hot beverage with a heating system for dynamic thermal management, comprising a housing frame (2), in which are accommodated a water module (100) for providing brewing water, which comprises a first heating device (120), having a boiler (121) with a fresh water inlet (12) and with a first heating element (123) for providing water heated to a first temperature T.sub.1 and a brewing module (200), whereby the brewing module (200) comprises a brewing device (220) for brewing a predefined amount of coffee with brewing water and a dispensing unit (230) for dispensing brewed coffee, as well as, disposed in a brewing water feed line (260), a second heating device (250), to heat the water heated to the first temperature T.sub.1 to a second temperature T.sub.2. The coffee machine provides for the second heating device (250) accommodated in the brewing module (200) being a thick film heater (252) designed as continuous flow heater.

A volumetric heating device for beverage preparation machines, along with a beverage preparation machine containing same, are disclosed, along with methods of producing and using same.

A in-vehicle coffee maker assembly for brewing a cup of coffee in a vehicle includes a vehicle that has an internal combustion engine. A water reservoir is coupled to the vehicle and the water reservoir is positioned in an engine compartment of the vehicle. The water reservoir contains potable water and the water reservoir is in thermal communication with the internal combustion engine. Thus, the internal combustion engine heats the potable water in the water reservoir when the internal combustion engine is running. A coffee maker is integrated into the vehicle. The coffee maker is in fluid communication with the water reservoir such that the coffee maker receives the potable water for brewing coffee.

A heating apparatus and method of heating. The embodiments of the invention relate to coffee machine heating apparatuses for providing heated brew water for passing through coffee grounds. The apparatus and method involves using low pressure steam (i.e. less than 1 bar absolute) at a saturation temperature that is substantially equal to the desired brew water temperature. Advantageously, improved temperature control of the brew water is achieved in a manner which is more convenient to an end user. The operating temperatures are more stable (the need for a cooling flush is removed) and the operating temperatures is reached in a quicker manner than with conventional machines.

A water heater for an aircraft beverage brewing apparatus includes a three way electrical conduit for conducting electrical power in three separate phases. The heater has a housing with a fluid inlet port at a first removable end piece and a fluid outlet port at a second removable end piece. The hollow cylindrical core incorporates a heating element wound around the core, and the housing includes three resettable temperature sensors at the outlet, each of the three resettable temperature sensors connected to a separate phase of power from the three way electrical conduit.

In order to reduce limescale formation on the continuous flow heater during operation of an apparatus for preparing freshly brewed hot beverages which has a hot water generator, which is embodied as a continuous flow heater, and a brewing apparatus, to which hot water from the hot water generator can be supplied, a controller for actuating the continuous flow heater is provided, which controller switches on the continuous flow heater for the purpose of drawing a pre-specified quantity of hot water and switches off said continuous flow heater shortly before the quantity of hot water is completely output, so that the temperature of the hot water at the output of the continuous flow heater is declining at the end of the drawing operation.

A heating device for heating water, having a container having an inlet channel and an outlet channel, two spaced-apart plates which act as electrodes and each comprise an electrical connection for connection to an electrical voltage source for generating a current flow through the water located between the plates, wherein at least one plate is mounted movably in order to change the distance between the plates and thereby the volume provided between the plates. A water-conducting device such as a washing machine, dishwasher or hot beverage maker, includes a flow conducting system and a heating device arranged therein, as described above.

A heating device for heating water having a container having an inlet and an outlet, two spaced-apart plates which act as electrodes and are each connected to an electrical voltage source for generating a current flow through the water located between the plates, and a control device for activating and deactivating a valve at the inlet and for activating and deactivating the voltage source. A water-conducting device, such as a washing machine, dishwasher or hot beverage maker, includes a flow line system and a heating device arranged therein, as described above.

An electric heater (1) for a machine for preparing hot beverages, comprising a metal body (2); at least one electric heating element (3, 4), in particular adapted to generate heat when it is crossed by an electric current, arranged in the metal body (2); a tube (5) for the passage of a liquid to be heated, arranged in the metal body (2); wherein an inner surface (6) of said tube (5) has a surface roughness (Ra) which is greater than 0.8 m, preferably greater than, or equal to 1 m.