Patent ID: 6382314
Filing Date: 2002-05-07
Classification: B29C,B29L,F28D,F28F,Y02P

Abstract:
A heat exchanger made of plastic that has first and second flow channels for respectively guiding first and second fluids countercurrently, comprising:(A) a cover part; (B) an intermediate layer that at least partially forms the flow channels, said intermediate layer comprising: (1) a first flow channel for the first fluid comprising channel sections that are spaced apart from one another, (2) a second flow channel comprising opposite flow sections on back of the channel sections that guide the second fluid in an opposite direction from the first fluid, and (3) a plurality of U-shaped reversing areas, each comprising an upper section through which the first fluid flows from the channel sections and a separate bottom section on back of the upper section through which the second fluid flows from the opposite flow sections, wherein wall areas that separate the channel sections and opposite flow sections are heat transfer membranes and wherein the channel sections and the opposite flow sections are in a zigzag manner; and (C) a trough part, wherein the cover part and the trough part are connected tightly with the intermediate part, and wherein the intermediate layer is a single piece.