Abstract: A device for fixing loops in a component (1) of a heat exchanger constituted by tubes (10) in which a fluid flows, the loops being situated in the plane of the heat exchanger and being formed by bends and by mutually parallel vertical lengths (11), at least one tube forms an additional loop (12, 14) leaving the plane of the heat exchanger component and surrounding the vertical lengths (11), the device being characterized in that a notched flat (2) is installed level with the additional loop, said flat being provided with semicircular openings each of which receives a vertical length.

Abstract: A system for interlocking closely adjacent verical lengths (10, 11, FIG. 2) of tube in a heat exchanger in which the tubes form loops between an inlet and an outlet and in which the tubes are suspended from a rigid structure by said inlet and outlet. Starting from the middle lengths, each length is provided with a hollow member (12) projecting on its side towards the outside of the bundle, welded to the tube along two generator lines (14, 24), and resting against the outer face of the adjacent length, and including a downwardly projecting lip (18), while the adjacent length is provided with an opposite like member (13) likewise welded thereto along two generator lines (15, 25), pressing against the outer face of the first length below the first member, and fitted with an upwardly projecting lip (19) engaging with the lip of the first member.