VORTEX HEAT EXCHANGE ELEMENT Russian patent published in 2018 - IPC F28D7/10 F28F1/12 

FIELD: heating equipment.

SUBSTANCE: invention relates to the heating equipment, and can be used in heat exchangers, used in various branches of engineering, in particular in the reactor building gas-turbine installations regenerative heat exchangers. In the vortex heat exchanging element containing coaxially arranged one inside the other heat exchange cylindrical tubes of larger diameter and the inner tube with cylindrical surfaces, at that the larger diameter tube is divided into sections, inside each of the tubes installed at least, two swirlers of the same or different types, wherein one swirler is at the entrance to the site, and the second is at a distance between them, determined by the swirling flow rotational motion complete attenuation at full thermal load, moreover, heat carriers inputs into each of the pipe sections of larger diameter and the inner pipe are made either from the same side, or from opposite sides with respect to the flow movement, providing both countercurrent and straight-through flow patterns of the heat carriers in the element, at that, the inner pipe with cylindrical surfaces is made of bimetal, wherein, the inner pipe surface material from the hot heat carrier side has a thermal conductivity coefficient in 2.0–2.5 times higher than the inner pipe surface material from the cold heat carrier side, wherein, on the cylindrical pipe of a larger diameter, along the outer surface, in each section determined by the swirling flow rotational motion complete attenuation at full thermal load, the fins packages are made, wherein, the distance between the ribs in each package decreases, in addition on each edge of the package vertical surface, located on a cylindrical tube of larger diameter, the helical grooves are made, wherein, the tangent helical groove direction on the adjacent rib opposite vertical surface has a counterclockwise direction, the helical grooves curvature is made along the cycloid line as a brachistichrone, and the cavities look like a dovetail.

EFFECT: enabling the ribs package heat transfer capacity constancy in the presence of the contamination solid particles in the heated heat carrier.

1 cl, 7 dwg