Method for making off-set louvered heat exchanger fin
AssigneeBehr Heat Transfer Systems, Inc.
InventorJames W. B. Lu
Life of this patent
Estimating the term…
Abstract
A heat exchanger assembly (10) includes a pair of tanks (16, 18) with a plurality of flat-sided fluid tubes (20) extending between the tanks (16, 18). Fins (22) may be located externally between adjacent fluid tubes (20), and may be located internally within each fluid tube (20) for increasing heat exchange. The fins (22) are formed by a plurality of undulations (32) establishing lengths of walls (34) between peaks (36) of the undulations (32). The walls (34) include a plurality of slits (44) therein forming panels (42) between adjacent slits (44). The panels (42) are "randomly" deformed of various contours to extend at various distances from the walls (34) to increase heat exchange.
Claims5
A method of making fins for a heat exchange assembly which includes a plurality of fluid tubes extending between a pair of end tanks, the method including the steps of:
- providing a sheet (31) of heat conducting material;
- forming panels (42) in the sheet (31) by cutting a pair of spaced slits (44) in the sheet and concurrently sloping one edge of the panel (42) adjacent one of the slits (44) with respect to the remaining edge of the panel (42) adjacent the other slit (44);
- deforming the angled panels (42) to predetermined contours, and
- deforming the sheet (31) into undulations (32) having peaks (36) with the panels (42) formed between adjacent peaks (36).
A method of making fins for a heat exchange assembly of the type utilizing a pair of tanks with fluid tubes interconnecting the tanks, the method including the steps of:
- providing a sheet (31) of heat conducting material;
- cutting panels (42) in the sheet (31);
- deforming the panels (42) to contours extending on one side of the sheet different from the contour of the next adjacent panel extending on the same side of the sheet.
Dependencies are inferred from the claim text.