METHOD AND DEVICE FOR MANUFACTURING PLATE HEAT EXCHANGER Russian patent published in 1996 - IPC

FIELD: heat engineering. SUBSTANCE: rectangular bars are interposed between plates to form passageways for fluids. Each side of the bars facing the plates are provided with a longitudinal projection. The projections of opposite sides are positioned on both sides of the center of the bar at a distance of 0.2-0.3 of its width. The sides are inclined to the plate plane at 2-3° to provide a contact with one of the edges. The device has pressing beams 15 with screw stops 16 mounted on disks 13 of bushings 12. Screws 17 of the stops are secured to rods 18 received in bushings 12 and secured to their bottoms 14. Longitudinal projections are made on bar sides facing the plates. The projections are bent out from the bar center to the periphery. In soldering, wedge-shaped spaces forming between the sides and plates are filled with a solder. EFFECT: enhanced strength. 4 cl, 4 dwg