HEAT EXCHANGER Russian patent published in 2020 - IPC F28F1/02 B29C64/00 

FIELD: heat engineering.

SUBSTANCE: invention relates to heat engineering and can be used in manufacturing of heat exchangers. Heat exchanger made using additive technologies (3D printing), containing heat exchange media supply and discharge nipples and a heat transfer unit consisting of a main section formed longitudinally oriented, located in staggered order for each of heat exchange media and having common walls by channels, and two end sections. Cross-sectional shape of heat transfer unit main section in any of its points is the result of expansion, compression, displacement of cross-sectional shape of heat transfer unit main section in its initial point, as well as rotation of cross section of main section of heat transfer unit around longitudinal axis of unit. Cross-section area of each channel remains invariable along the entire length of heat transfer unit.

EFFECT: increased efficiency of heat exchanger without advance increase of its hydraulic resistance, which ensures reduction of weight and dimensions of heat exchanger.

6 cl, 5 dwg