HEAT EXCHANGER FOR WATER PURIFICATION SYSTEM BY RECRYSTALLIZATION METHOD Russian patent published in 2022 - IPC C02F1/22 

FIELD: water purification devices.

SUBSTANCE: claimed group of inventions relates to devices for water purification by recrystallization, in particular to devices for the production of drinking melted water, and can be used in systems for the purification of technical, polluted, saline and sea water. The device comprises a housing with outer and inner walls, oriented upwards, with a bottom and a locking lid. The housing contains a displacer, a baffle, a manifold for air supply, mounted with the possibility of supplying air to the lower part of the cooling cavity, a set of pipes for supplying and discharging water. The displacer is made in the form of a cone oriented with the opening angle upwards, with the possibility of adjusting the amount of contaminated water supplied to the housing, the duration of the water freezing and ice thawing regimes. The partition is made in the form of a truncated cone and is oriented with the opening angle upwards. The baffle is located between the inner wall of the housing and the displacer to form, respectively, cooling and recirculating annular cavities communicating with each other through water above and below the baffle. In the inner cavity of the displacer there is a heating element, which is configured to maintain the temperature of the surface layer of water in a predetermined interval. Water inlet and outlet pipes are mounted on the bottom of the housing and are configured to supply water to the cooling cavity and drain from the recirculation cavity. A refrigerant or heat carrier is supplied and discharged through pipes into the annular cavity between the outer and inner walls of the housing. Planks are rigidly fixed on the inner wall of the housing radially to its surface.

EFFECT: reducing the duration of water freezing and ice thawing regimes while improving the quality of purified water.

10 cl, 2 dwg