Method for crimping a tube end plate of a heat exchanger on a header box and heat exchanger obtained through this method
AssigneeSociete Anonyme des Usines Chausson
InventorMichel Allemandou
Life of this patent
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Abstract
In a method for crimping a tube end plate of a heat exchanger on a header box, there is provided a peripheral upright edge for enclosing an extra thickness defined by the header box. Portion of the upright edge of the tube end plate which has to extend, when assembled, at least in part above a flange of the header box is stiffened. The stiffened portion of the upright edge of the tube end plate is folded at least partly back onto the flange of the header box.
Claims15
A heat exchanger of the tube and heat dissipator type with the tubes opening into at least one tube end plate which is covered by a header box crimped by a peripheral upright edge of the tube end plate, wherein the upright edge of the tube end plate has, at least along a major portion of its periphery, a line of lesser resistance, wherein stiffening means, having camming surfaces engagable with a crimping tool, are provided in the upright edge solely above the line of lesser resistance, and wherein, as the camming surface engage the tool, the upright edge of said tube end plate, including said stiffening means, is folded back on a peripheral flange of the header box substantially around said line of lesser resistance in a position at which a heel portion of said header box is maintained so as to compress a deformable gasket.
A method for crimping a tube end plate of a heat exchanger on a header box, the tube end plate being provided with a peripheral upright edge and the header box having a corresponding peripheral extra-thickness with a flange, comprising the steps of:
- providing a line of lesser resistance in the peripheral upright edge of the tube end plate,
- stiffening only that portion of said peripheral upright edge of the tube end plate which extends above said line of lesser resistance so that a camming effect may occur when contacted by an appropriate tool, and
- bending the stiffened portion of said peripheral upright edge at least partly back into a position so that said stiffened portion overlies said header box flange and compresses a deformable gasket.
Dependencies are inferred from the claim text.