The invention relates to a plate package for a heat exchanger device
including a tank with an inner space and an inner wall surface. A
sectional plane (p) extends vertically through the inner space. The tank
has an inlet for the supply of a liquid medium and an outlet for
discharging the medium in a gaseous state. The inner space defines a
lower part space and an upper part space. The plate package (10) with
heat exchanger plates (11) is provided in the inner space. Each heat
exchanger plate has an extension plane perpendicular to the sectional
plane. The heat exchanger plates form first plate interspaces that are
open towards the inner space for recirculation of the medium, and second
plate interspaces, which are closed towards the inner space for the
recirculation of a fluid for evaporating the medium. Each heat exchanger
plate includes a first porthole (14) and a second porthole (15).
Furthermore, each heat exchanger plate includes an elongated distribution
element (25) which extends into the adjacent second plate interspace and
substantially transversally to the sectional plane (p).