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 the form of shells, forming annular cavities, wherein annular cavities of hot and cold flows are uniformly alternating between each other. At ends of shells end bottoms are fixed, connected to each other and to housing and form series-arranged end annular cavities, wherein in said bottoms there are isolated channels, which diameter decreases from periphery to center, 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, wherein in the central part of the bottoms, inside the central shell, heat exchange elements are installed in the form of tubes, the cavities of which are connected to the cavity of one of the flows, wherein the cavity inside the central shell is connected to the cavity of the other flow.

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

1 cl, 3 dwg