METHOD OF MANUFACTURE OF TUBELESS HEAT EXCHANGER Russian patent published in 1996 - IPC

FIELD: heat engineering; manufacture of heat exchange equipment in which increasing of outer and inner surfaces is required. SUBSTANCE: plates with holes with edging over perimeter are assembled into pack. Corrugated tapes with filler is corrugations are wound into coil which is fixed at end faces by end pieces, and combined plastic deformation is carried out to obtain a set diameter is equal to diameter of holes with edgings inplates. Instead of alignment of holes of adjacent plates, plates are fitted on set of corrugated tapes with fillers, and then fillers are taken out. Coil of corrugated tapes with fillers can be fixed by winding with wire whose diameter is less than thickness of tapes. Corrugations of tapes can be oriented rectilinear along longitudinal axis of set or along screw line. Fitted on plates, rings and corrugated tapes have layer of solder. Extraction of fillers is carried out first at solder melting temperature and than at solder solidification temperature. EFFECT: enlarged operating capabilities. 5 cl, 14 dwg