The plate heat exchanger which includes the renforcing plate which is provided outside the outermost heat exchanger plate

摘要

The invention relates to a plate HEAT exchanger including a plurality of plates. The plates extend in parallel to a main extension plane and include several HEAT exchanger plates and a strengthening plate (2). The HEAT exchanger plates are provided beside each other and form a plate package with first plate interspaces and second plate interspaces. Each HEAT exchanger plate has four portholes forming ports (8) through the plate package. 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. Two of the plate interspaces in the plate package form a respective outermost plate interspace at a respective side of the plate package and which are delimited outwardly by a respective one of the outermost HEAT exchanger plates. The strengthening plates are provided outside one of the first HEAT exchanger plates. The strengthening plates (2) have a main zone (20), which extends in parallel with the extension plane and which includes a strengthening pattern (21), which is provided in the proximity of two of the ports (8) and includes at least one depression (22) extending outwardly from the HEAT exchanger plates.