Liquid-heating device for electric household appliance

Liquid-heating device (11) for an electric household appliance, the device comprising a main body (1) and a complementary element (3) disposed opposite a face of the main body (1), a liquid circulation channel (4) existing between the complementary element (3) and main body (1), said channel having two ends forming an inlet (5) designed to be connected to a liquid reservoir and an outlet (6) designed for discharging the heated liquid, said complementary element (3) having a heating resistor (2) disposed in order to enable the heating of liquid travelling along the channel (4), characterised in that said channel (4) has a cross-section defined in depth by the main body (1) and the complementary element (3) and defined in width by at least a blade extending from the main body (1) to the complementary element (3), said channel (4) having a minimum cross-sectional liquid flow area (5 min) situated distant from said outlet (6) and within closer proximity to the outlet (6) of the channel than to the inlet (5) thereof.