US 12,104,863 B2
Heat exchanger
Tomas Dahlberg, Helsingborg (SE); and Sven Andersson, Hasseleholm (SE)
Assigned to SWEP International AB, Landskrona (SE)
Filed by SWEP International AB, Landskrona (SE)
Filed on Feb. 1, 2022, as Appl. No. 17/590,179.
Application 17/590,179 is a division of application No. 16/770,057, granted, now 11,867,469, previously published as PCT/EP2018/083553, filed on Dec. 4, 2018.
Claims priority of application No. 1751497-7 (SE), filed on Dec. 5, 2017.
Prior Publication US 2022/0155018 A1, May 19, 2022
Int. Cl. F28D 9/00 (2006.01); B21D 13/04 (2006.01); B21D 53/04 (2006.01); F28F 3/04 (2006.01); F28F 3/10 (2006.01)
CPC F28D 9/005 (2013.01) [B21D 13/04 (2013.01); B21D 53/04 (2013.01); F28F 3/046 (2013.01); F28F 3/10 (2013.01); F28F 2230/00 (2013.01); F28F 2275/04 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for forming heat exchanger plates provided with long sides, short sides, a plane, a pressed pattern comprising depressions and elevations, and a skirt extending at least partly along only the long sides of the heat exchanger plates and being inclined in relation to the plane of the heat exchanger plates, comprising the steps of:
feeding blanks or a continuous strip of sheet metal into a roll forming apparatus comprising at least two rolls having a pattern comprising ridges and grooves adapted to press a pattern comprising ridges and grooves into the blanks or the continuous strip;
forming the skirt by the at least two rolls;
stamping port openings in the blanks or strip of sheet metal; and
in the case of a strip being fed into the roll forming apparatus, cutting the strip into a length corresponding to a desired length of the heat exchanger plate.