Abstract: A Plate and Shell type plate heat exchanger, which comprises an inner shell (9) completely surrounding a plate pack (2) and inner end plates (11a, 11b) in the direction of the ends of the plate pack. The inner shell (9) is by its inner surface arranged into contact with the outer edge of the baffle plates (8a, 8b) arranged on the surface of the plate pack and by its outer surface the inner shell (9) is arranged to support itself against the inner surface of the shell (3) of the outer casing of the heat exchanger. The inner end plates (11a, 11b) are supported by their outer surface against the inner surface of the end plates (4a, 4b) of the outer casing.

Abstract: The invention relates to a plate heat exchanger, which comprises a plate pack formed by corrugated heat exchange plates with openings for the flow of a first and a second heat exchange medium. The outer shell of the plate heat exchanger (1) has been formed by arranging separate strips (9, 9?) in the outer edge of the plate pack (2) so that the outer surfaces of the strips (9, 9?) are substantially in the same plane with the outer edges of the heat exchange plates (6, 6?), and by welding the strips (9, 9?) and the outer edges of the heat exchange plates (6, 6?) to each other.

Abstract: A Plate and Shell type plate heat exchanger, which comprises an inner shell (9) completely surrounding a plate pack (2) and inner end plates (11a, 11b) in the direction of the ends of the plate pack. The inner shell (9) is by its inner surface arranged into contact with the outer edge of the baffle plates (8a, 8b) arranged on the surface of the plate pack and by its outer surface the inner shell (9) is arranged to support itself against the inner surface of the shell (3) of the outer casing of the heat exchanger. The inner end plates (11a, 11b) are supported by their outer surface against the inner surface of the end plates (4a, 4b) of the outer casing.

Abstract: The invention relates to a plate heat exchanger (1) and a method for manufacturing a plate heat exchanger. In a plate heat exchanger according to the invention, baffle plates (7, 7?) have been arranged between the outer surface of the plate pack (6) and the outer casing surrounding the plate pack, which baffle plates form a flow channel (9) between the outer surface of the plate pack and the outer casing for at least one heat-yielding and/or at least one heat-receiving heat exchange medium from the inlet connection (4, 5) to the plate pack and a flow channel (9?) from the plate pack to the outlet connection (4?, 5?).