HEAT EXCHANGER Russian patent published in 2020 - IPC F28D7/10 

FIELD: heat exchange equipment.

SUBSTANCE: invention can be used to create heat exchangers. Heat exchanger comprising a housing with inlet and outlet branch pipes for inlet and outlet of hot and cold flows, heat exchange elements made in the form of shells, located each relative to each other with annular gaps, forming annular cavities, wherein annular cavities of hot and cold flows are uniformly alternating between each other, characterized by that on ends of shells there are end bottoms attached to each other and to housing, and forming in-series arranged annular cavities, wherein on outer surface of coaxial shells there are longitudinal ribs, wherein ribs are located along helical line, wherein ribs on the next shell are directed in opposite direction from the direction of ribs on the previous shell, at that in the above bottoms there are insulated channels connecting said end cavities through one to each other, wherein said annular cavities of heat exchange elements are connected to cavities of inlet and outlet branch pipes of cold and hot flows through said end cavities formed by bottoms.

EFFECT: technical result is improvement of technical characteristics and expansion of functional capabilities of heat exchanger.

1 cl, 3 dwg