MULTI-PASS CROSS-FLOW HEAT EXCHANGER PLATE Russian patent published in 2020 - IPC F28D9/02 F28F9/22 

FIELD: heat exchange.

SUBSTANCE: invention relates to heat engineering and can be used in heat exchangers for heat recovery. Plate multi-pass cross-exact heat exchanger contains a housing, in which corrugated plates are installed, forming a cavity for the first heat carrier with devices of supply and withdrawal, and also tubular heat exchange channels with V-shaped projections for the second heat carrier. Corrugated plates are welded to each other in pairs on peripheral edges of two through windows and seating surfaces of opposite end into a single heat exchange stack with collectors formed by adjacent corrugated plates through corners and communicated with supply devices and removal of the first heat carrier, for which multi-pass flow is provided with at least one overlapping of the throughput opening. In order to realize multi-pass flow of the second heat carrier, at least one partition wall is installed, which connects, without rigid connections of the supply and discharge device with a single heat exchange packet, separating the second heat carrier along the passages so that at the initial stroke the V-shaped projections of the tubular heat exchange channels are directed with their apices towards the flow of the second heat carrier, and their positions in the subsequent strokes are arbitrary.

EFFECT: technical result is higher efficiency of heat utilization, self-cleaning heat-transferring surface.

8 cl, 1 dwg