Heat exchanger plate having distortion resistant uniform pleats

Details Heat exchanger plate having distortion resistant uniform pleats Heat exchanger plate having distortion resistant uniform pleats

B - Operations, Transporting

23

P

26/145

B23P 15/26 (2006.01)

Patent

CA 1221819

-19- Heat Exchanger Plate Having Distortion Resistance Uniform Pleats Abstract A heat exchanger plate has undulatory pleats for forming fluid flow passages on opposite sides of the plate. The heat exchanger plate is improved by providing the side walls of each pleat with a uniform slope. By this arrangement, the plate is provided with improved distortion resistance and fluid flow capacity. Apparatus for forming the pleated plates is disclosed using a pair of non-uniform donative fluid passage forming blades mounted for relative oscillatory movement with respect to a recipient fluid passage forming blade wherein the clearance between each blade is uniform throughout the entire length of each blade. By making the blade clearance constant the slope of pleat sidewalls may be constant even though each pleat follows a curvilinear path.

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