HEAT EXCHANGER WITH A FLUID/GAS MIXING DEVICE HAVING HOLES WITH AN IMPROVED SHAPE Russian patent published in 2021 - IPC F28F9/22 F28F3/08 

FIELD: heat engineering.

SUBSTANCE: invention relates to the field of heat engineering, it can be used in plate heat exchangers in which at least one fluid flow is a fluid-gas or multicomponent mixture. In heat exchanger (1) containing a plurality of plates (2) arranged in parallel to form a first row of passages (10) for the direction of at least one first fluid (F1) and a second row of passages (20) for the direction of at least one second fluid (F2), which is designed to bring into heat exchange contact with at least said first fluid (F1), mixing device (3), located in the specified at least one passage (10) of the first row and containing at least one first channel (31) for the flow of first phase (61) of first fluid (F1) following flow direction (z), at least one second channel (32) for the flow of second phase (62) of first fluid (F1) and at least one hole (34) connecting through fluid first channel (31) with second channel (32), hole (34) contains first part (34a) leading to first channel (31), wherein specified first part (34a) has the first cross-section, and second part (34b), located between first part (34a) and second channel (32), wherein second part (34b) has a second cross-section, wherein the first cross-section is larger than the second cross-section.

EFFECT: technical result is an increase in the uniformity of the distribution of the fluid-gas mixture along the width of the passage of the heat exchanger.

14 cl, 5 dwg