Heat exchanger plate and heat exchanger

Abstract

Plate () for a heat exchanger between a first medium and a second medium, the plate being associated with a main plane (P) of extension and a height direction (H) perpendicular to said main plane, and comprising a first heat transfer surface () on a first side () of the plate, arranged to be in contact with the first medium flowing along said first side; a second heat transfer surface () on a second side () of the plate, arranged to be in contact with the second medium flowing along said second side; a plurality of indentations () in the plate, formed by the material of the plate bulging out locally in the said plate height direction, of which a plurality are bridge-shaped indentations () comprising two respective through-holes () in the plate, as well as a respective bridge part () forming a passage () between the said through-holes, and wherein the passage has a general direction being substantially parallel to a general flow direction (D) of the second medium past the bridge-shaped indentation in question. The invention is characterised in that, for at least a plurality of the said bridge-shaped indentations, the shape of the respective bridge part, in a cross-section taken perpendicularly to both the main plane and to the said general direction of the passage in question, comprises a local minimum (), so that the height of the bridge part, in said cross-section, first increases, then decreases to the said local minimum, and then again increases.