HEAT EXCHANGER Russian patent published in 2019 - IPC F28D7/16 

FIELD: heat exchange.

SUBSTANCE: heat exchanger made using additive technologies (3D printing) comprises housing, heat exchange medium supply and discharge branch pipes, heat transfer unit with longitudinally oriented channels and common walls, wherein at each end of heat transfer unit channels of one medium protrude relative to ends of channels of other medium, wherein said ends are parts of tube grates that together with channel ends adjoining them form cavities. Extending channels, passing through these cavities, at least on part of their length do not touch each other. This non-contact is provided by changing either the cross-sectional shape of the channels or the cross-sectional area of the channels, either the shape and cross-sectional area of the channels simultaneously, or by the fact that the centers of mass of the sections of the protruding parts of the channels are not on lines perpendicular to the planes of both tube grids, for example, the channels diverge relative to each other.

EFFECT: technical result is higher efficiency of heat exchange.

7 cl, 6 dwg