Patent ID: 6244334
Filing Date: 2001-06-12
Classification: F28D,F28F

Abstract:
A plate type heat exchanger comprising:first and second core plates, each core plate including a planar central portion, a first pair of spaced-apart bosses extending from one side of the planar central portion, and a second pair of spaced-apart bosses extending from the opposite side of the planar central portion, said bosses each having an inner peripheral edge portion, and an outer peripheral edge portion defining a fluid port; a continuous ridge encircling the inner peripheral edge portions of at least the first pair of bosses and extending from the planar central portion in the same direction and equidistantly with the outer peripheral edge portions of the second pair of bosses;each core plate including a raised peripheral flange extending from the planar central portion in the same direction and equidistantly with the outer peripheral edge portions of the first pair of bosses;the first and second core plates being juxtaposed so that one of: the continuous ridges are engaged or the plate peripheral flanges are engaged; thereby defining a first fluid chamber between the engaged ridges or peripheral flanges; the fluid ports in the respective first and second pairs of spaced-apart bosses being in registration;a third core plate being located in juxtaposition with one of the first and second core plates to define a second fluid chamber between the third core plate and the central planar portion of the adjacent core plate; anda turbulizer engaging at least one of the core plates, the turbulizer being in the form of a shim plate having a pair of fluid ports in registration with a pair of the core plate ports, a shim plate central planar portion, and a peripheral edge portion coterminous with the respective continuous ridge or raised peripheral flange on the adjacent core plate, the shim plate central planar portion including flow augmenting projections disposed on one side only of the shim plate central planar portion and being of a height equal to the height of the respective continuous ridge or raised peripheral flange.