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 comprises housing with inlet and outlet branch pipes for inlet and outlet of hot and cold flows, heat exchange elements made in form of several coaxially installed shells, arranged each relative to each other with annular gaps forming annular cavities. Annular cavities of hot and cold flows regularly alternate. On end faces of shells there are end profiled bottoms fixed to each other and to the housing and forming in-series arranged annular cavities. Said bottoms have isolated channels connecting said end cavities through one another. Said annular cavities of heat exchange elements are connected to cavities of inlet and outlet branch pipes of cold and hot flows through the above butt-end cavities formed with profiled bottoms.

EFFECT: disclosed invention simplifies heat exchanger, reduces its dimensions and eliminates non-uniform heating of its shells.

1 cl, 3 dwg