COIL HEAT EXCHANGER WITH PARTS MADE OUT OF DIFFERENT MATERIALS Russian patent published in 2011 - IPC F28D7/02 

FIELD: machine building.

SUBSTANCE: in coil heat exchanger with multitude of pipes wound around central pipe and with jacket restricting external space, its first and second parts are made out of different materials and are interconnected at point consisting of material of first part as main material and plated with material of second part. Also the first part is made out of steel, while the second part is made out of aluminium. The first and second parts are chosen from the group including the following parts: the central pipe, pipes, section of pipes, pipe grids, the jacket, distributors, bridges between two layers of the pipes, brackets for suspended fastening bridges and a case between the jacket and the pipes.

EFFECT: increased operational reliability.

6 cl, 1 dwg