Method for producing a heat exchanger and heat exchanger obtained by said method, swage and tube expansion device for implementing said method
AssigneeValeo Systemes Thermiques
InventorsPatrick Boisselle, Samuel Bry
Life of this patent
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Abstract
A method is disclosed for producing a heat exchanger, in particular for a motor vehicle, a method whereby fluid circulation tubes (3) are inserted into through holes in heat exchange fins (4) and the fluid circulation tubes (3) are subjected to expansion in such a way as to expand a contour (22) of the tubes (3) to ensure contact with the fins (4) at the through holes and, additionally, for at least one of the tubes (3), to deform a concave portion (24) of the contour (22) of the tube or tubes (3), in such a way as to correspondingly deform the through holes. A device for implementing the method and an exchanger obtained by the method are also disclosed.
Claims9
A method for producing a heat exchanger, comprising:
- introducing fluid circulation tubes (3) into through-holes (7) of heat-exchange fins (4);
- expanding the fluid circulation tubes (3) to enlarge an outline (22) of said tubes (3) in order to provide a contact with said fins (4) at said through-holes (7), wherein said expanding further comprises:
- for at least one of said tubes (3), deforming a concave part (24) of the outline (22) of said tube or tubes (3) extending in a first direction such that the concave part (24) remains concaved, so as to obtain a corresponding deformation of said through-holes;
- and creating one or more protuberances (28) projecting in a second direction opposite the first direction towards the fins (4), causing a deformation of the through-holes (7).
Dependencies are inferred from the claim text.