RADIAL-SPIRAL HEAT EXCHANGER Russian patent published in 2015 - IPC F28D9/04 B01D3/14 

FIELD: heating.

SUBSTANCE: heat exchanger is proposed, comprising a housing with pipes of supply and discharge of heat carriers. Along the heat exchanger axis the units of heat-exchange elements are mounted with two circumferential distribution collectors of the second heat carrier each, at that in the axial part of the heat exchanger the cylindrical shell is arranged, having two opposite convex bottoms adjacent to the inner axial surfaces of the heat exchange elements. Each of the heat exchange elements is made hollow with an odd number of radial slits, and the walls of the heat exchange elements have axially directed spacing protrusions on one of the sides which alternately form axial slotted channels in the outer cavity for the first, and in the inner cavity - axial slotted channels for the second heat carrier. The circumferential distribution collectors of the second heat carrier of different units may be made communicating with each other in series or in parallel.

EFFECT: simplification of the design, elimination of requirements on layout, increase in the average temperature difference.

2 cl, 2 dwg