HEAT EXCHANGER Russian patent published in 2019 - IPC F28B1/06 F28D1/53 F28F9/07 

FIELD: heating equipment.

SUBSTANCE: invention relates to the field of heat engineering and can be used in the manufacture of air recuperative heat exchangers. Heat exchanger includes housing (1) and ribbed heat exchanger (2) installed in a housing by means of U-shaped boxes (4) with the possibility of sliding during thermal expansion thereof between L-shaped corners (5) fixed on the inner surface of housing (1). In the lower shelves of U-shaped boxes (4) along edges thereof there are longitudinal rectangular projections (6). Longitudinal edges (7) of U-shaped boxes (4) are rounded out, for example, with a radius of 1...3 mm. Side shelves of U-shaped boxes protruding into the heat exchanger and shelves of L-shaped corners have perforations of rectangular or elliptical cross section, and the length of the shelves of L-shaped corners (5) protruding inside the heat exchanger is to be less than the length of the side shelves of U-shaped boxes (4) by an amount not less than the radius of longitudinal edges (7) of U-shaped boxes (4).

EFFECT: increased efficiency of the assembly of the heat exchanger.

5 cl, 7 dwg