Patent ID: 6401804
Filing Date: 2002-06-11
Classification: F28D,F28F

Abstract:
A heat exchanger for performing a heat exchange between an inside fluid and an outside fluid, the heat exchanger comprising:plural pairs of heat-exchanging plates each having a plurality of projection ribs, each pair of said heat-exchanging plates facing each other in such a manner that, said projection ribs protrude outwardly to form therein an inside fluid passage through which the inside fluid flows, and to form an outside fluid passage through which the outside fluid flows between adjacent pairs of said heat-exchanging plates, wherein: said projection ribs protrude from flat surfaces of said heat-exchanging plates to said outside fluid passage to disturb a flow of the outside fluid; and said projection ribs are provided in each of said heat-exchanging plates to have a protrusion pitch (P1) between adjacent projection ribs, said protrusion pitch being in a range of 10-20 mm.