Patent ID: 6942024

Claim:
A corrugated heat exchanger element that can be produced from a metal strip and has a corrugation height (h) that lies between the crests of the corrugations, in which the crests form a first and second plane that consist of several crests, at least some of the crests of each plane being connected to heat exchanger walls, and in which each crest of the first plane is connected to the following crest of the second plane by means of flanks, and a flow channel is formed between adjacent flanks; the corrugated heat exchanger element comprising structures situated in flanks and whose direction of alignment in one flank intersects with the direction of alignment in the following flank, elements of the structures including cuts that connect the adjacent flow channels together in terms of flow, said cuts lying in said direction of alignment in each of said flanks, wherein the structures are arranged in several groups, in which opposite slope angles (α) of structures in one flank are provided from one group to the next group, and in which the flanks are formed either without structure between the groups or can have stiffening elements.