Abstract: In a plate heat exchanger (1) comprising a package (3) of heat transfer plates (2) arranged between two frame plates at least one of the frame plates (6) is provided with connection pipes (9) for one or two heat exchange fluids. The connection pipes (9) are provided with internal linings (10), which are permanently connected round the ports (4) to an outer heat transfer plate (14) of the package (3) of heat transfer plates (2). Each lining (10) is arranged with room (12) for radial movement inside its connection pipe (9) and provided with at least one bellows (11) adapted--upon relative displacement between the one frame plate (6) and the outer heat transfer plate (14) in a direction across the connection pipe (9)--to facilitate bending of the lining (10). Thereby, a very compact plate heat exchanger (1) can be obtained.

Abstract: The present invention refers to a plate heat exchanger for heat transfer between two fluids, comprising two frame plates (6) and between these several permanently joined heat transfer plates (3), which have inlet and outlet openings (9) for respective fluids in their corner portions, communicating with connections (8) through at least one of the frame plates (6). The connections (8) are formed of outer extending pipes (10) provided with internal linings (11). The outer pipes (10) are permanently fastened to the frame plate (6) and the internal linings (11) are permanently connected with an adjacent first heat transfer plate (3).