FIELD: heating.
SUBSTANCE: invention relates to heat engineering and can be used in domestic electric appliances equipped with a heating device. A liquid heating device intended for a domestic electric appliance having at least one liquid circulation pipe; with that, the pipe is equipped with swirlers of liquid circulating in the pipe internal volume, in which there are relief surfaces on the pipe inner wall; with that, the inner wall includes a heat exchange section capable of being operated together with heating devices, and relief surfaces are formed beyond the limits of the heat exchange section.
EFFECT: optimum ratio of heating time to heated liquid temperature.
22 cl, 18 dwg
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