Plate heat exchanger

A plate heat exchanger comprising

• a number of heat exchanger plates, which are substantially parallel to an extension plane (x, z) and arranged adjacent to each other in a plate package,
• a first end plate and a second end plate, which are substantially parallel to the extension plane (x, z) and arranged on a respective side of the plate package, and
• a device for keeping the plate package together in such a way that the heat exchanger plates abut each other, wherein the device comprises
• two separate tie sheets consisting of a first tie sheet and a second tie sheet, which are arranged on a respective side of the plate package substantially perpendicular to the extension plane (x, z),
• at least a first connection member extending between the tie sheets outside the first end plate, and
• at least a second connection member extending between the tie sheets outside the second end plate,
• wherein the first connection member includes at least a first attachment of each of the tie sheets and at least a first beam, which extends in parallel with the extension plane (x, z) outside the first end plate and engages the first attachment of each tie sheet.

A method for manufacturing a plate heat exchanger including a plurality of heat exchanger plates, a first end plate, a second end plate, two separate tie sheets having a first tie sheet and a second tie sheet, a first connection member and a second connection member, comprising:

• arranging the heat exchanger plates substantially in parallel to an extension plane and adjacent to each other in a plate package between the first end plate and the second end plate,
• arranging the first tie sheet and the second tie sheet on a respective side of the plate package substantially perpendicular to the extension plane,
• arranging at least the first connection member between the tie sheets outside the first end plate, and
• arranging at least the second connection member between the tie sheets outside the second end plate,
• wherein the first connection member includes at least a first attachment of each of the tie sheets and at least a first beam, which is arranged in parallel to extension plane outside the first end plate in engagement with the first attachment of each tie sheet.

A method for manufacturing a plate heat exchanger including a plurality of heat exchanger plates, a first end plate, a second end plate, two separate tie sheets having a first tie sheet and a second tie sheet, at least a first beam and at least a second beam, comprising:

• arranging the second end plate on the second beam, stacking the heat exchanger plates to a plate package on the second end plate,
• arranging the first end plate on the plate package,
• arranging the first beam on the first end plate,
• compressing the beams, end plates and plate package,
• attaching the tie sheets by moving the tie sheets towards the sides of the plate package in such a way that the first beam engages at least a first attachment of each of the two tie sheets and the second beam engages at least a second attachment of each of the two tie sheets, and
• removing the compressing.