Abstract: In a hot beverage preparation device, in particular a coffee machine, having a hot water boiler for heating and storing hot water or hot steam for preparing hot beverages, the hot water boiler has a cold water inlet, a storage vessel having a heater and a hot water and/or steam outlet. The storage vessel is at least partially provided or surrounded with a vacuum insulation. The heat loss of the hot water boiler can be significantly reduced by the vacuum insulation.

Abstract: An apparatus for dispensing a liquid foodstuff, in particular milk, includes a heating device for heating the liquid foodstuff, which has a fluid path for the liquid foodstuff and an electric heater. The fluid path and heater are in thermal contact with a heat store made from a material of high thermal mass and conductivity, and the heat store is brought by the heater to an operating temperature which lies below 80° C., preferably below 70° C. The fluid path is connectable via at least one directional control valve to a flushing line via which water and/or detergent can be conducted through the fluid path for cleaning purposes. A control device is provided that is configured to heat the heat store of the heating device to a temperature above 100° C. to carry out thermal regeneration, and to open the directional control device one or more times for conducting water or detergent solution through the fluid path of the heating device heated to a high temperature.

Abstract: 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.

Abstract: An apparatus for dispensing a liquid foodstuff, in particular milk, includes a heating device for heating the liquid foodstuff, which has a fluid path for the liquid foodstuff and an electric heater. The fluid path and heater are in thermal contact with a heat store made from a material of high thermal mass and conductivity, and the heat store is brought by the heater to an operating temperature which lies below 80° C., preferably below 70° C. The fluid path is connectable via at least one directional control valve to a flushing line via which water and/or detergent can be conducted through the fluid path for cleaning purposes. A control device is provided that is configured to heat the heat store of the heating device to a temperature above 100° C. to carry out thermal regeneration, and to open the directional control device one or more times for conducting water or detergent solution through the fluid path of the heating device heated to a high temperature.

Abstract: 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.