Device and method for the production of cooled coffee

摘要

The invention relates to a device (1, 10) for the production of cooled coffee, comprising a brewing unit (4) for the production of coffee, a cooling assembly (11) and a coffee cooler (14) formed as a heat exchanger, wherein the coffee cooler (14) has at least one first and one second flow path that are connected thermally but not in a fluid-conducting manner, wherein a coolant can flow through the first flow path and the second flow path is connected in a fluid-conducting manner with a coffee outlet (5) of the brewing unit (4). It is essential that the device furthermore has a fresh-water supply (2) and a fresh-water cooler (13) formed as an additional heat exchanger, wherein the fresh-water cooler (13) has at least one first and one second flow path that are connected thermally but not in a fluid conducting manner and the fresh-water supply (2) is connected in a fluid-conducting manner downstream with the second flow path of the fresh-water cooler (13), further downstream with the first flow path of the coffee cooler (14), and further downstream with the brewing unit (4) and the first flow path of the fresh-water cooler (13) is connected in a fluid-conducting manner with a coolant circuit of the cooling assembly. The invention further relates to a method for the production of cooled coffee.

主权项

1. A device for production of coffee that is cooled below a brewing unit outlet temperature, comprising:
a brewing unit for production of the coffee, a cooling assembly and a coffee cooler formed as a heat exchanger, the coffee cooler having only a single cooling stage, and has at least one first and one second flow path that are connected thermally but not in a fluid-conducting manner, a coolant can flow through the first flow path and the second flow path is connected in a fluid-conducting manner with a coffee outlet of the brewing unit, a fresh-water supply and a fresh-water cooler formed as an additional heat exchanger, the fresh-water cooler has at least one first and one second flow path that are connected thermally, but not in a fluid-conducting manner, and the fresh-water supply is connected in a fluid-conducting manner downstream with the second flow path of the fresh-water cooler so that fresh water is cooled by the fresh-water cooler, the second flow path of the fresh-water cooler is connected in a fluid-conducting manner further downstream with the first flow path of the coffee cooler so that, with respect to the coffee cooler, the fresh water having been cooled by the fresh water cooler acts as a coolant in the single cooling stage and the first flow path of the coffee cooler is connected in a fluid-conducting manner further downstream with the brewing unit so that the fresh water, which is heated, due to heat transfer with the coffee cooled in the coffee cooler, is fed to the brewing unit, in order to produce the coffee via brewing, and the first flow path of the fresh-water cooler is connected in a fluid-conducting manner with a coolant circuit of the cooling assembly.