HEAT EXCHANGER STRUCTURE FOR REDUCING ACCUMULATION OF LIQUID AND FREEZING Russian patent published in 2018 - IPC F28F3/04 

FIELD: heat exchange.

SUBSTANCE: present invention relates to a method for reducing accumulation of liquid and freezing in plate type countercurrent heat exchanger (100) comprising stack of heat transfer plates (102). Present invention also relates to plate type countercurrent heat exchanger (100) comprising stack of heat transfer plates (102) forming a primary flow channels for first flow (116) of heat exchange gas and a secondary flow channels for second flow (118) of heat exchange gas. Stack of heat transfer plates comprise channelling section (138) in which the primary flow channels and the secondary flow channels are located. Channelling section (138) of heat transfer plates (102) comprises formations which form ridges and grooves the direction of which is at an angle with respect to the direction of flows (116, 118) of the heat exchange gases in the primary flow channels and the secondary flow channels. In some embodiments the direction of ridges and grooves is perpendicular to the direction of flows. In some embodiments the distance between two adjacent plates in the stack is substantially constant at channelling section (138).

EFFECT: structure of the heat exchanger plates according to the present invention reduces the risk of liquid building up inside the heat exchanger and hence reduces the risk of forming ice on the surfaces of the heat exchanger plates; therefore, flowing of gases (for example, air) inside the heat exchanger is also improved.

15 cl, 12 dwg