▎ 摘　　要

NOVELTY - The exchanger multiple heat exchange plates overlapped with each other for forming a first fluid flow path. Adjacent even layer heat exchange plates are connected end to end for forming a second fluid flow path. Two flow paths are not in communication with each other. The heat exchange plate includes a flat upper surface and a flat lower surface. The flat upper surface and the flat lower surface are coated with a graphene heat conductive coating. The heat exchange plate is prepared by using a graphene composite plate, where solute in graphene solution is a single layer graphene, a multilayer graphene or a mixture, and the solvent is water, acetone, chloroform, methanol or ethanol. USE - Anti-dirt plate type heat exchanger. ADVANTAGE - The exchanger is simple in structure and easy to be washed, and uses the graphene with excellent heat conducting coating, improves the heat exchanging efficiency of the heat exchanger. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of an anti-dirt plate type heat exchanger. '(Drawing includes non-English language text)'