Device i.e. coffee pot, for preparing hot drink e.g. coffee, has pipe portion whose outlet regions are formed as acoustic signal transmitters that produce acoustic signal when liquid vapor is produced in container by regions of pipe portion

摘要

The device has a riser pipe portion comprising inlet regions (2, 3) for heating liquid over a liquid container (1) and forming a volumetric flow (4) to accommodate a substance (K) to be flown from the liquid. Outlet regions (5, 6) drive off the flow of liquid from the volumetric flow, where the device is formed such that overpressure is produced in the container by heating the liquid. The outlet regions of the pipe portion are formed as acoustic signal transmitters (11-14) that produce an acoustic signal when liquid vapor is produced in the container by the outlet regions of the pipe portion.