Turbulence stimulating fin for a finned tube unit fitted for a heat exchanger, and the fin-shaping roller adapted for shaping the mentioned turbulence stimulating fin, the unit composed of the tube for the heat exchanger and the turbulence stimulating fin, and the heat exchanger

摘要

Turbulator fin for a tube-fin assembly adapted for a heat exchanger, the turbulator fin comprising a corrugated sheet with a plurality of adjacent folds between a first transverse side of the sheet and a second transverse side of the sheet, each fold having a fixed fold height (h) delimited by adjacent fold lines and each fold having a fold length (L) in longitudinal direction of the sheet, characterized in that, the end fold forming the edge of the sheet of at least one transverse side of the sheet has a reduced fold height (hr) compared to the fixed fold height (h).