Plate evaporator

Plate evaporator comprising a package of substantially vertically arranged heat transferring plates (4) with plate interspaces, every second one of which forms an evaporation space (28) for at least partial evaporation of a liquid and the other plate interspaces forming condensation spaces (30) for at least partial condensation of a heat emitting vapour, and further comprising first sealing means (13, 14) which in an upper part of the plate interspaces forming evaporation spaces (28) delimit distribution chambers (27), each of which has several separate connections with at least one evaporation space (28), the heat transferring plates (4) having through openings (16) forming an inlet channel for evaporation liquid, which extends through the plate package and communicates with the distribution chambers (27), wherein

• at least two second sealing means (25) are arranged in an upper part of each condensation space (30), horizontally spaced from each other along the heat transferring plates (4), each of said second sealing means delimiting between the heat transferring plates (4) a transferring chamber (29) that is closed from connection with other parts of the condensation space (30),
• the condensation spaces (30) communicate with the surrounding of the plate package through the gaps formed between said second sealing means (25) for receiving heat emitting vapour from above, and
• the heat transferring plates (4) have through holes (17, 18) communicating with the transferring chambers, for each transferring chamber (29) at least one first hole (17) connecting the transferring chamber (29) with a distribution chamber (27) and at least one second hole (18) connecting the transferring chamber (29) with an evaporation space (28).