HEAT EXCHANGER, HEAT EXCHANGING PLATE AND METHOD OF MANUFACTURING HEAT EXCHANGER Russian patent published in 2014 - IPC F28F3/00 

FIELD: heating.

SUBSTANCE: heat exchanger comprises a number of pairs of heat exchanging plates made of metal sheet having a three-dimensional systematic structure. Inside the row of the said pairs a first flow channel is formed, and between the said pairs the second flow channel is formed. Each plate has a through hole, in each of the said heat exchanging plate the auxiliary hole is made, having a projecting edge forming a flare inserted into the corresponding auxiliary hole of the adjacent heat exchanging plate.

EFFECT: ensuring the durable connection between the adjacent plates in the area of the through hole.

16 cl, 6 dwg