Patent ID: 6390186
Filing Date: 2002-05-21
Classification: F28D,F28F,Y10S

Abstract:
A heat exchanger for heat transfer between a first fluid and a second fluid, the heat exchanger comprising:a casing of generally axisymmetric cylindrical shape formed by two end walls and a cylindrical peripheral wall equipped with inlet piping and outlet piping for the first fluid; a bank of tubes elongated parallel to the axis of the casing, end regions of each tube passing, in fluid-tight fashion, through apertures formed in said end walls, and outer faces of the bank of tubes delimiting, within the casing, a chamber for circulation of the first fluid; and two axisymmetric annular caps, each respectively capping ones of said end walls of the casing and connected in a leak tight way to the periphery of said end wall, so as to define manifolds which communicate with each other via the bank of tubes for circulation of the second fluid, central apertures in the caps constituting respectively an inlet aperture and an outlet aperture for the second fluid, wherein the caps are made from stamped sheet metal, and wherein the casing and the caps have a slightly oval shape, the casing have an external diameter and the caps having an internal diameter; the external diameter of the casing having a minimum value less than the minimum value of the internal diameter and having a maximum value greater than the maximum value of the internal diameter.