Metal working – Method of mechanical manufacture – Heat exchanger or boiler making
Patent
1995-06-26
1997-09-02
Cuda, Irene
Metal working
Method of mechanical manufacture
Heat exchanger or boiler making
29890054, B23P 1526
Patent
active
056619065
ABSTRACT:
In a method of manufacturing a plate heat exchanger individual plates are connected to pairs such that the individual plates are parallel to and spaced from one another by edge portions with a common edge. The pairs are combined to a plate stack such that the common edges are parallel. A sealing strip, having a slotted end face with parallel slots, is positioned at the end of the plate stack such that the common edges are received in the slots and the edge portions abut the slotted end face and such that the end of the plate stack projects slightly past the outer surface of the sealing strip perpendicular to the slotted end face. The sealing strip is welded to the common edges by using at least a portion of the material of the plate stack end projecting past the outer surface. The edge portions are welded to the outer surface of the sealing strip by using exclusively the material of the plate stack projecting past the outer surface. The welding heat is continuously dissipated by placing a shaped part, made of a material having good heat-conducting properties, onto the surface of the sealing strip opposite the outer surface.
REFERENCES:
patent: 4688631 (1987-08-01), Peze et al.
patent: 4846268 (1989-07-01), Beldam et al.
patent: 4915163 (1990-04-01), Matsunaga et al.
patent: 5184673 (1993-02-01), Hedman et al.
Beier Albert
Herrmann Wolfgang
BDAG Balcke-Durr Aktiengesellschaft
Cuda Irene
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