HEAT EXCHANGER, REFRIGERATOR PROVIDED WITH HEAT EXCHANGER, AND AIR CONDITIONING DEVICE PROVIDED WITH HEAT EXCHANGER Russian patent published in 2015 - IPC F28F1/32 

FIELD: heating.

SUBSTANCE: invention relates to heat engineering and can be used at manufacture of heat exchangers. A heat exchanger consisting of finned tubes includes a lot of parallel located heat exchange tubes 10 and a lot of leaf-shaped fins 1 provided orthogonally to heat exchange tubes 10, with that, each of the heat exchange tubes is in contact with flanges of fins of leaf-shaped fins and inserted along flanges of fins. Each flange 2 of the fin is made so that a provision is made for a bend on each of reversely projecting section 3 and root section 4 of fin flange 2, and flat intermediate section 5 is made between bends. Thickness Tw1 of reversely projecting section 3 is smaller than thickness Tw2 of root section 4. Radius R1 of the bend of reversely projecting section 3 is larger than radius R2 of the bend of root section 4, and (Tw1/R1) ratio of radius R1 to thickness Tw1 of the bend of reversely projecting section 3 is equal to half or more of (Tw2/R2) ratio of radius R2 to thickness Tw2 of the bend of root section 4.

EFFECT: reduction of resistance of thermal contact between heat exchange tubes and flanges of fins.

6 cl, 11 dwg, 4 tbl