METHOD OF AND DEVICE FOR HEAT EXCHANGER MANUFACTURE Russian patent published in 1996 - IPC

FIELD: welding engineering; manufacture of heat exchangers built up of finned heat-transfer tubes of oval section with flat parallel walls; thermoelectromechanical engineering. SUBSTANCE: device has supporting belt conveyer 1 for fins 7, driving belt conveyers 6 for fins 7 placed close to the former conveyer, box 8 for fins 7, and electron- or laser-beam welding apparatus 11 that functions to weld up half-tubes 10 on inner side together with fins 7 placed on their outer surface. Upon finning, half-tubes are welded up over longitudinal edges 27 with other finned half-tubes 10 to form heat-transfer tubes. These tubes can be zinc-plated separately or upon their assembly in bank forming heat exchanger. EFFECT: facilitated manufacture. 9 cl, 11 dwg