Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1987-12-21
1989-02-28
Rosenbaum, Mark
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29423, 165165, 228183, B21D 5304
Patent
active
048073423
ABSTRACT:
An improved heat exchanger is shown for indirect heat exchange between two fluid media. The heat exchanger has thin metallic walls and a multitude of convoluted or tortuous shaped internal flow passages to increase the effective contact time during which heat is transferred between the media. The heat exchanger is particularly suitable for heat exchange between fluids having low differential temperatures or specific heats, due to the thin wall structure, the elongated tortuous internal flow path created by the core structure and the absence of welds, soldering or other thick areas which tend to inhibit heat transfer due to their relatively greater mass. The heat exchanger is produced by a novel technique. A support matrix is assembled from a plurality of low melting point forms, each of which has angled internal passages. The passages of each form are positioned in register with the passages of adjacent forms. The entire assembly is then clamped together to establish a conductive matrix having the desired internal flow paths. The clamps assemblage is then subjected to a metal deposition technique forming a thin metallic coat, and thus creating the desired heat exchanger structure. The treated assemblage is then heated, melting the internal core matrix and removing it from the deposited surface. This leaves the desired thin wall heat exchanger structure.
REFERENCES:
patent: 3364548 (1968-01-01), Marco
patent: 4688631 (1987-08-01), Peze et al.
Chin Frances
Kesterson James C.
Rosenbaum Mark
The Laitram Corporation
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