Patent ID: 6182746
Filing Date: 2001-02-06
Classification: F28D,F28F

Abstract:
A plate-type heat exchanger, comprising:at least two stacked tub-shaped heat exchanger plates, each tub-shaped heat exchanger plate having:a plate bottom;a circumferential, beveled border; andinlet and outlet passages for fluid passage, whereinsaid plate bottom of each tub-shaped heat exchanger plate includes a transition, without a step, into its associated circumferential beveled border;said circumferential, beveled border of each tub-shaped heat exchanger plate has one of a continuous and discontinuous curvature, with the curvature directed outwardly from the tub-shaped heat exchanger plate; andsaid circumferential, beveled border of adjoining tub-shaped heat exchanger plates having joined surfaces which are connected to each other by brazing along their curvature, such that a brazed fillet is formed between and contacts curved surfaces of facing surface portions of adjacent plates.