FIELD: heating.
SUBSTANCE: heat exchanger comprises several pairs of heat exchange plates made of sheet metal of 3D ordered structure. Note here that first flow channel is arranged inside the row of said pairs while between them second flow channel is composed. Every said plate has at least one through hole. The latter is surrounded by lugs cut in its zone and bent off outward. Note also that lugs of one plate are fitted in through hole of adjacent plate.
EFFECT: reliable joint between adjacent plates in through hole zone.
15 cl, 7 dwg
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