Abstract: A plate heat exchanger arrangement includes a plate pack and an outer casing surrounding the plate pack. At least one partition plate is arranged between the heat exchange plates of the plate pack, which divides the plate pack to the separate plate pack parts. The plate heat exchanger arrangement is provided with inlet and outlet connections for each plate pack part which are arranged to connect the inner parts of the plate pairs of said plate pack part. A connection pipe is arranged inside a flow passage of the plate pack part between the end plate of the outer casing and the partition plate such that a first end of the connection pipe is attached to the partition plate to form a connection to the flow passage of the plate pack part and a second end thereof extends through an end plate of the outer casing.

Abstract: An evaporator (1) for vaporizing a substance into its gaseous form, which comprises at least a plate pack (4) functioning as an evaporator and a droplet separator arranged inside the outer casing. An outlet connection (6) for leading the vaporised substance out from the outer casing is arranged to an end plate of outer casing, and said outlet connection (6) is connected to a suction duct (10) arranged inside the outer casing in a longitudinal direction of the shell, and said suction duct (10) comprises openings (12) at the upper surface of the suction duct, wherein the droplet separator is constructed at both sides of the suction duct (10).

Abstract: A modular arrangement for use in vapor-compression refrigeration system includes an evaporator, oil separator, condenser and oil cooler, arranged inside an outer casing with a longitudinal cylindrical shell and the end plates in both ends of the shell. The shell includes three separate parts, separated from each other by arranging first and second partition walls between the parts. The first part includes the evaporator, the second part includes the oil separator and the third part includes the oil cooler and the condenser. The third part including a combination of the oil cooler and the condenser is constructed by arranging one plate pack into the third part, which is divided two functional plate pack parts by an intermediate plate arranged between the heat exchange plates of the plate pack. The first plate pack part functions as oil cooler and the second plate pack part functions as the condenser.

Abstract: The present invention relates to a method and a device for manufacturing plate part blanks for a heat exchanger. A sheet material (2) in the form of continuous sheeting is worked between two rolls (5, 6) with opposite surface patterns (7, 7?, 8) to form profiled plate part blanks (3, 3?,3?) into the sheet material (2) so that the rolls (5, 6) are synchronized to rotate at substantially same rate by controlling the rotation of them in relation to each other with common synchronization gear (9), which gear is coupled to the rolls (5, 6) by means of shafts (10, 11) with disk pack or gear couplings.

Abstract: An evaporator (1) for vaporizing a substance into its gaseous form, which comprises a cylindrical outer shell (2) and a plate pack (4) arranged inside the cylindrical shell in its lower part and a droplet separator (9) arranged above the plate pack. A recirculation of a substance to be vaporized is carried out by using flow guides (10a, 10b) arranged tightly between the plate pack and the outer shell and by an ejector pipe (13) arrangement comprising a collection pipe (11) arranged inside the outer shell.

Abstract: A method and arrangement for repairing a leaking point in a plate pack of a plate heat exchanger (1), in which a space between adjacent plate pairs of the plate pack (4), with which the leaking point is in connection, is closed by arranging a separate strip (9) or sealing tape (10) into the space between the plate pairs on the whole length of the outer perimeter of the plate pack.

Abstract: The invention relates to a method for cleaning a plate heat exchanger, in which method the plate pack (2) of the plate heat exchanger is removed from the outer casing, the plate pack (2) is stretched in its longitudinal direction so that the spaces between the plates of the plate pack increase, and then the plate spaces of the plate pack are cleaned.

Abstract: The invention relates to a plate heat exchanger and a method for constructing multiple passes in the plate heat exchanger. A plate heat exchanger (1) according to the invention comprises at least one stopper plate (7) arranged between the outer surface of the plate pack (6) and the shell (2) of the outer casing of the heat exchanger for arranging multiple passes for the second heat exchange medium to the heat exchanger, wherein the stopper plate (7) is welded to an additional planar structure of the plate pack.

Abstract: A Plate and Shell type plate heat exchanger, which comprises a plate pack, a shell surrounding the plate pack, and end plates mainly in the direction of the ends of the plate pack and inlet and outlet connections for a first heat exchange medium and a second heat exchange medium arranged through the end plate. The plate pack of the heat exchanger is arranged inside the shell in an acentric manner, so that the midpoint of the cross-section of the plate pack deviates substantially from the midpoint of the cross-section of the shell in the vertical direction and/or lateral direction of the cross-section.

Abstract: An apparatus for vaporizing a medium and separating droplets as well as for condensing, in which apparatus an evaporator (A) and a condenser (B) are arranged inside a single outer casing in such a manner that they are separated from each other by a partition wall.

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 device (1) for separating droplets, which comprises—an outer casing (2), which has a substantially horizontal cylindrical shell (14) and substantially vertical ends (9);—an inlet connection (7) for a substance to be vaporized for leading a substance to be vaporized into the outer casing;?—a plate pack (3) functioning as an evaporator, which is arranged inside the outer casing, in its lower part (23);—an inlet connection (10) and an outlet connection (11) for a heating substance for leading a heating substance into the plate pack and out of it;—a gravitational droplet separator (4), which is arranged inside the outer casing, above the plate pack;—an outlet connection (8) for vaporized substance for leading the vaporized substance out of the outer casing from its upper part (15);—one or more filler units (12a, 12b) arranged between the outer casing (2) and the plate pack (3) for decreasing the liquid volume of the substance to be vaporized inside the outer casing.

Abstract: A method and arrangement for repairing a leaking point in a plate pack of a plate heat exchanger (1), in which a space between adjacent plate pairs of the plate pack (4), with which the leaking point is in connection, is closed by arranging a separate strip (9) or sealing tape (10) into the space between the plate pairs on the whole length of the outer perimeter of the plate pack.

Abstract: The invention relates to an apparatus and a method for separating droplets from vaporized refrigerant. The droplet separator according to the invention has a separation vessel, where the droplets gravitationally separate from the vaporized refrigerant. A partition plate has been arranged in the separation vessel, which partition plate divides the separation space into two separation parts. Thereby the refrigerant is arranged—to pass firstly through the first separation space on the first side of the partition plate, —then to transfer to the second side of the partition plate, i.e. to the second separation space—then to pass through the second separation space on the second side of the partition plate.

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 device (1) for separating droplets, which comprises—an outer casing (2), which has a substantially horizontal cylindrical shell (14) and substantially vertical ends (9);—an inlet connection (7) for a substance to be vapourised for leading a substance to be vapourised into the outer casing;—a plate pack (3) functioning as an evaporator, which is arranged inside the outer casing, in its lower part (23);—an inlet connection (10) and an outlet connection (11) for a heating substance for leading a heating substance into the plate pack and out of it;—a gravitational droplet separator (4), which is arranged inside the outer casing, above the plate pack;—an outlet connection (8) for vapourised substance for leading the vapourised substance out of the outer casing from its upper part (15);—one or more filler units (12a, 12b) arranged between the outer casing (2) and the plate pack (3) for decreasing the liquid volume of the substance to be vapourised inside 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?).

Abstract: The invention comprises a heat exchanger with plate structure and a flow guide plate (32). The flow guide plate (32) comprises at least one recess (42) for turning the stream of a heat transfer medium substantially from the direction of the thickness of the plate to be parallel with the plane of the plate.

Abstract: The invention relates to a heat exchanger (1) with plate structure, comprising a stack (6) of plates fitted inside a housing unit (2) assembled by welding circular heat transfer plates (10) and used as a pressure vessel. All the passages (7, 8, 26, 27) of the heat exchanger (1) are arranged to extend through an end plate (4). A flow guide (24) with the shape of the letter Z, or the like, is placed between the end plate (14) of the housing unit (2) and the end plate (14) of the stack (6) of plates.

Abstract: The invention relates to a method and a device for improving heat transfer in a circular plate heat exchanger (1), as well as a heat transfer plate to be used therein. The invention is based on changing the flow conditions in the radial direction in such a way that the heat transfer remains even. The ridges between the grooves of the heat transfer plates (10) may be, in their shape, evolvent graphs or the like.