PLATE-TYPE BLOCK HEAT EXCHANGER WITH SCALE PREVENTION PROPERTIES Russian patent published in 2015 - IPC F28D9/00 F28F19/00 

FIELD: heating.

SUBSTANCE: plate-type block heat exchanger contains a package (30) of heat-conducting plates which comprise the first heat-conducting plate (51) and the second heat-conducting plate (52). At least a part of each of the first heat-conducting plate (51) and the second heat-conducting plate (52) has coating, which: i) has the layer thickness 1-30 mcm, ii) prepared using sol-gel method, iii) contains silicon oxide (SiOx) with the atomic ratio O/Si>1 and iv) contains ≥5 or ≥10 of nuclear percentage of carbon (C).

EFFECT: preservation of coating on areas which are applied by it, within a long period of heat exchanger operation.

12 cl, 3 tbl, 6 dwg