Patent ID: 8181696
Filing Date: 2012-05-22
Classification: F28D,F28F,Y10S

Abstract:
1. A plate heat exchanger comprising a plurality of heat exchanger plates, each of which extends in parallel with a main extension plane, and at least one strengthening plate, wherein the heat exchanger plates are provided beside each other and form a plate package with first plate interspaces for a first medium and second plate interspaces for a second medium, wherein each of the heat exchanger plates has four portholes which form ports extending through the plate package, wherein the heat exchanger plates include an outermost heat exchanger plate at one side of the plate package and an outermost heat exchanger plate at an opposite side of the plate package, wherein two of the plate interspaces in the plate package form a respective outermost plate interspace at a respective side of the plate package, which are delimited outwardly by a respective one of the outermost heat exchanger plates, wherein the strengthening plate is provided outside one of the outermost heat exchanger plates, wherein the strengthening plate has a main zone, which extends in parallel with the extension plane and comprises a strengthening pattern, the strengthening pattern being provided in the proximity of two of the ports and comprising several depressions extending outwardly from the plate package, wherein at least one of the depressions is elongated along the extension plane and seen in a normal direction to the extension plane.