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US 9,714,796 B2Granted
Plate heat exchanger and method for manufacturing of a plate heat exchanger
AssigneeVahterus Oy
InventorTapio Heiniö
Life of this patent
Estimating the term…
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.
Claims17
A plate heat exchanger which comprises:
- a plate pack formed by heat exchange plates arranged on top of each other such that outer perimeters of the heat exchange plates establish an outer plate pack surface,
- an outer casing surrounding the plate pack, wherein the outer casing comprises separated outer end plates positioned adjacent to respective ends of the plate pack and an outer shell connecting the outer end plates, wherein the outer shell has an inner surface which is spaced from the outer plate pack surface,
- first and second pairs of inlet and outlet connections for a first exchange medium and a second heat exchange medium, respectively,
- baffle plates oriented in a longitudinal direction of the plate pack, wherein the baffle plates are arranged on the outer plate pack surface substantially perpendicular to the plate pack, the baffle plates comprising respective inner and an outer edges, wherein the inner edges of the baffle plates are arranged so as to be in contact with the outer plate pack surface,
- a first flow channel defined between the baffle plates which extends from the inlet connections to the plate pack and a second flow channel defined between the baffle plates which extends from the plate pack to the outlet connections, wherein the first and second flow channels allow for flow of the first heat exchange medium and the second heat exchange medium between the paired inlet and outlet connections, respectively,
- an inner shell surrounding the plate pack, the inner shell having inner and outer surfaces, the inner surface of the inner shell being attached to the outer edges of the baffle plates and the outer surface of the inner shell having a shape corresponding to the inner surface of the outer shell of the outer casing and being supported against the inner surface of the outer shell of the outer casing, and
- first and second inner end plates each having an outer surface which is supported against a respective inner surface of the outer end plates of the outer casing.
4 more elements
A method for manufacturing a plate heat exchanger comprising:
- (a) forming a plate pack by attaching a stack of heat exchange plates to each other such that outer perimeters of the heat exchange plates establish an outer plate pack surface,
- (b) arranging an outer casing around the plate pack, wherein the outer casing comprises separated outer end plates positioned adjacent to respective ends of the plate pack and an outer shell connecting the outer end plates, wherein the outer shell has an inner surface which is spaced from the outer plate pack surface,
- (c) arranging first and second pairs of inlet and outlet connections for a first exchange medium and a second heat exchange medium, respectively,
- (d) arranging baffle plates so that the baffle plates are oriented in a longitudinal direction of the plate pack, wherein the baffle plates are arranged on the outer plate pack surface substantially perpendicular to the plate pack, the baffle plates comprising respective inner and an outer edges, wherein the inner edges of the baffle plates are arranged so as to be in contact with the outer plate pack surface,
- (e) forming a first flow channel defined between the baffle plates which extends from the inlet connections to the plate pack and a second flow channel defined between the baffle plates which extends from the plate pack to the outlet connections, wherein the first and second flow channels allow for flow of the first heat exchange medium and the second heat exchange medium between the paired inlet and outlet connections, respectively,
- (f) arranging an inner shell around the plate pack, the inner shell having inner and outer surfaces, the inner surface of the inner shell being attached to the outer edges of the baffle plates and the outer surface of the inner shell having a shape corresponding to the inner surface of the outer shell of the outer casing and being supported against the inner surface of the outer shell of the outer casing, and
- (g) arranging first and second inner end plates each having an outer surface which is supported against a respective inner surface of the outer end plates of the outer casing.
4 more elements
Dependencies are inferred from the claim text.