COIL-TYPE SHELL-AND-TUBE HEAT EXCHANGER Russian patent published in 1995 - IPC

FIELD: heat engineering. SUBSTANCE: arranged in housing 1 of heat exchanger are tubular coils with turns 3 forming walls of longitudinal passages having slotted clearances 4 between tubes of adjacent turns. Corrugated axial expulsors made of hollow taper members are arranged inside passages; coil supply or discharge pipes 6 are arranged inside expulsors. Adjacent turns may be of equal or different diameters forming longitudinal wavy passage having alternating converging and diverging sections. Corrugation of expulsor may be equal to pitch of passage wall wave; contracting section of expulsor is arranged inside diverging passage. Converging and diverging sections of passages may have equal length. Diverging sections of one tubular coil may be arranged opposite converging sections of adjacent tubular coils. EFFECT: enhanced reliability. 6 cl, 5 dwg