Patent ID: 6378603
Filing Date: 2002-04-30
Classification: F28D,F28F

Abstract:
An evaporator for carrying out a heat exchange between an inside fluid and an outside fluid comprising:a pair of heat conductive plates extending in an approximately vertical direction and each having a first plurality of projection ribs aligned in a first row and a second plurality of projection ribs aligned in a second row, a flat section being disposed between said first and second rows, said flat section extending over substantially the entire length of each of said heat conductive plates, said pair of heat conductive plates facing each other in such manner that said first and second plurality of projection ribs protrude outwardly from each of said pair of heat conductive plates for forming inside fluid passages through which the inside fluid flows therebetween, wherein: said first and second plurality of projection ribs cooperate with a first and a second plurality of projection ribs, respectively, on adjacent heat conductive plates to form first and second outside fluid passages through which the outside fluid flows, said first and second outside fluid passages being defined only by said heat conductive plates, said projection ribs causing said outside fluid to make a turbulent flow through said first and second outside fluid passages, said projection ribs are arranged for crossing with respect to a flow direction of the outside fluid, said first and second rows are arranged in the flow direction of the outside fluid and said projection ribs are disposed at an acute angle to the flow direction of the outside fluid; and a plurality of the pairs of heat conductive plates are stacked to form a heat-exchanging core portion, each of said heat conductive plate includes tank portions having communication holes at both ends thereof in a flow direction of the inside fluid, and said tank portions make said inside fluid passages in each pair of heat conductive plates communicate with each other.