Patent ID: 8052846

Claim:
A liquid cleaning device for purifying liquid from pollutants, comprising: a vessel, having a lower chamber and an upper chamber, said lower chamber being connected to a heating member arranged to heat the liquid in said lower chamber; a riser and liquid-distributor member, said riser being arranged to transport heated liquid from said lower chamber up to the upper part of said upper chamber, wherein the liquid-distributor member is arranged to impart the heated liquid an increased area of exposure to surrounding air, the liquid then, by means of the gravity, running back downward outside the riser and being collected in the lower part of the upper chamber of the vessel; said upper chamber and lower chamber being in communication with each other to allow transfer of the liquid from the upper chamber to the lower chamber; wherein the heating member is arranged to assume at least two power levels; and a change-over member being arranged to automatically reduce the power level of the heating member; wherein the change-over member is formed so that the automatic reduction of the power level of the heating member is triggered by the boiling of the liquid.