Patent ID: 7044206

Claim:
A plate for a heat exchanger constituted by a stack of plates, each plate comprising a central zone in which it presents adjacent first corrugations directed generally along respective alignment axes in the longitudinal direction of the plate and comprising successive segments that are substantially rectilinear and oblique, being successively in a first sense and in a second sense relative to their longitudinal alignment axis, the plate further including at least one set of successive segments of second corrugations extending along respective alignment axes of generally transverse direction and intersecting the set of longitudinal axes along which the first corrugations are disposed, the segments of the second corrugations being angular or in alignment to one another and the transverse alignment axes of substantially rectilinear segments of the second corrugations making an angle lying in the range 45° to 90° with the longitudinal axes of the first corrugations; wherein the second corrugations of generally transverse direction intersect the first corrugations in zones of the rectilinear segments of the first corrugations that are situated between the ends of said segments.