HEAT EXCHANGER FOR A BOILER AND A HEAT EXCHANGER TUBE Russian patent published in 2022 - IPC F24H1/43 F28D7/04 

FIELD: heat engineering.

SUBSTANCE: invention can be used in flat-spiral heat exchangers. Heat exchanger for a heating device, such as a boiler, comprises tube assembly (10), which includes a plurality of tubes (1) superimposed on each other, and at least one first collector assembly (11) on the outer side of tube assembly (10). Each tube (1) is coiled, having a plurality of substantially coplanar turns (2a, 2b, 2c). At least one first tube (1) or each tube of a plurality of tubes has first end portion (3), which extends, starting from inner turn (2a), to outer side of corresponding spiral, with at least one part (30) of first end section (3), which is superimposed on at least one additional turn (2b, 2c) in a position corresponding to the main surface of the spiral, for connection to at least one first collector assembly (11). At least one first tube (1) or each tube of a plurality of tubes has at least one transverse recess (6), formed in at least one next turn (2b, 2c) or in each subsequent turn, in which corresponding part (30) of the first end section (3) is at least partially placed.

EFFECT: simplified design of heat exchanger.

15 cl, 31 dwg